China Flip Top Cap Mould | Topworks<\/title>\n<link href=\"https:\/\/fonts.googleapis.com\/css2?family=Bebas+Neue&family=DM+Sans:ital,opsz,wght@0,9..40,300;0,9..40,400;0,9..40,500;0,9..40,700;1,9..40,300&family=DM+Mono:wght@400;500&display=swap\" rel=\"stylesheet\"\/>\n<style>\n :root {\n --bg: #0d0d0d;\n --surface: #161616;\n --surface2: #1f1f1f;\n --border: #2a2a2a;\n --accent: #e8b84b;\n --accent2: #c0392b;\n --text: #e8e4dc;\n --muted: #8a8480;\n --white: #faf8f4;\n }\n\n *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }\n html { scroll-behavior: smooth; }\n body {\n background: var(--bg);\n color: var(--text);\n font-family: 'DM Sans', sans-serif;\n font-weight: 300;\n line-height: 1.7;\n overflow-x: hidden;\n }\n\n \/* \u2500\u2500 HERO \u2500\u2500 *\/\n .hero {\n position: relative;\n min-height: 88vh;\n display: flex;\n align-items: center;\n overflow: hidden;\n background: #080808;\n }\n .hero-img {\n position: absolute; inset: 0;\n width: 100%; height: 100%;\n object-fit: cover;\n opacity: 0.28;\n filter: grayscale(50%);\n }\n .hero-overlay {\n position: absolute; 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}\n .stat { border-left: 2px solid var(--accent); padding-left: 16px; }\n .stat-num {\n font-family: 'Bebas Neue', sans-serif;\n font-size: 42px; color: var(--white); line-height: 1;\n }\n .stat-label {\n font-size: 11px; letter-spacing: 2px;\n text-transform: uppercase; color: var(--muted);\n }\n\n \/* \u2500\u2500 SHARED \u2500\u2500 *\/\n .container { max-width: 1200px; margin: 0 auto; padding: 0 40px; }\n section { padding: 96px 0; }\n\n .section-label {\n display: inline-flex; align-items: center; gap: 10px;\n font-family: 'DM Mono', monospace; font-size: 10px;\n letter-spacing: 3px; text-transform: uppercase;\n color: var(--accent); margin-bottom: 20px;\n }\n .section-label::before {\n content: ''; display: block;\n width: 24px; height: 1px; background: var(--accent);\n }\n .section-title {\n font-family: 'Bebas Neue', sans-serif;\n font-size: clamp(36px, 5vw, 62px);\n letter-spacing: 1px; color: var(--white);\n line-height: 1; margin-bottom: 24px;\n }\n\n \/* \u2500\u2500 TECH BAND \u2500\u2500 *\/\n .tech-band {\n background: var(--surface2);\n border-top: 1px solid var(--border);\n border-bottom: 1px solid var(--border);\n padding: 28px 40px;\n }\n .tech-band-inner {\n max-width: 1200px; margin: 0 auto;\n display: flex; gap: 40px; flex-wrap: wrap; align-items: center;\n }\n .tech-pill {\n display: flex; align-items: center; gap: 8px;\n font-size: 12px; font-family: 'DM Mono', monospace; color: var(--muted);\n }\n .tech-pill::before { content: '\u25cf'; font-size: 8px; color: var(--accent); }\n\n \/* \u2500\u2500 FEATURE BAND \u2500\u2500 *\/\n .feature-band { background: var(--accent); padding: 20px 40px; }\n .feature-band-inner {\n max-width: 1200px; margin: 0 auto;\n display: flex; align-items: center; gap: 16px;\n }\n .feature-band p { color: #0d0d0d; font-size: 15px; font-weight: 500; }\n\n \/* \u2500\u2500 INTRO \u2500\u2500 *\/\n .intro { background: var(--surface); border-top: 1px solid var(--border); }\n .intro-grid {\n display: grid; grid-template-columns: 1fr 1fr;\n gap: 80px; align-items: start;\n }\n .intro-text p { font-size: 16px; color: var(--muted); margin-bottom: 18px; line-height: 1.85; }\n .intro-text a { color: var(--accent); text-decoration: none; border-bottom: 1px solid transparent; transition: border-color .2s; }\n .intro-text a:hover { border-color: var(--accent); }\n\n \/* cap types list *\/\n .cap-types {\n list-style: none; margin-top: 8px;\n display: grid; grid-template-columns: 1fr 1fr; gap: 8px 24px;\n }\n .cap-types li {\n display: flex; align-items: center; gap: 10px;\n font-size: 14px; font-weight: 500; color: var(--text);\n padding: 10px 0; border-bottom: 1px solid var(--border);\n }\n .cap-types li::before {\n content: '\u2192'; color: var(--accent);\n font-family: 'DM Mono', monospace; font-size: 12px;\n }\n .cap-types a { color: var(--text); text-decoration: none; transition: color .2s; }\n .cap-types a:hover { color: var(--accent); }\n\n \/* \u2500\u2500 GALLERY \u2500\u2500 *\/\n .gallery-section { background: var(--bg); }\n .gallery-hero-img {\n width: 100%; display: block;\n border: 1px solid var(--border); margin-bottom: 3px;\n filter: grayscale(15%); transition: filter .4s;\n }\n .gallery-hero-img:hover { filter: grayscale(0); }\n .gallery-grid {\n display: grid; grid-template-columns: repeat(3, 1fr); gap: 3px; margin-top: 3px;\n }\n .gallery-item {\n overflow: hidden; position: relative; aspect-ratio: 4\/3; background: var(--surface2);\n }\n .gallery-item img {\n width: 100%; height: 100%; object-fit: cover;\n filter: grayscale(20%); transition: transform .5s ease, filter .4s;\n }\n .gallery-item:hover img { transform: scale(1.05); filter: grayscale(0); }\n .gallery-overlay {\n position: absolute; inset: 0;\n background: rgba(232,184,75,0); transition: background .3s;\n display: flex; align-items: center; justify-content: center;\n }\n .gallery-item:hover .gallery-overlay { background: rgba(232,184,75,0.08); }\n .gallery-zoom {\n font-size: 11px; font-family: 'DM Mono', monospace;\n letter-spacing: 2px; color: var(--white);\n opacity: 0; transform: translateY(6px); transition: all .3s;\n }\n .gallery-item:hover .gallery-zoom { opacity: 1; transform: none; }\n\n \/* \u2500\u2500 DESIGN GUIDE \u2500\u2500 *\/\n .design-guide { background: var(--surface); }\n .design-intro {\n font-size: 16px; color: var(--muted); line-height: 1.85;\n max-width: 760px; margin-bottom: 64px;\n }\n .design-intro a { color: var(--accent); text-decoration: none; }\n\n .design-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 2px; }\n\n .design-card {\n background: var(--surface2);\n padding: 40px 36px;\n border-top: 2px solid transparent;\n transition: border-color .3s, background .3s;\n }\n .design-card:hover { border-top-color: var(--accent); background: #232323; }\n\n .design-card-num {\n font-family: 'Bebas Neue', sans-serif;\n font-size: 64px; color: var(--border); line-height: 1;\n margin-bottom: 12px; transition: color .2s;\n }\n .design-card:hover .design-card-num { color: var(--accent); }\n .design-card-title {\n font-size: 15px; font-weight: 600; color: var(--white);\n margin-bottom: 14px; text-transform: uppercase;\n letter-spacing: 0.5px; line-height: 1.3;\n }\n .design-card-body { font-size: 13px; color: var(--muted); line-height: 1.8; }\n .design-card-body a { color: var(--accent); text-decoration: none; }\n .design-card-body strong { color: var(--text); font-weight: 500; }\n .design-card-body em { font-style: italic; }\n\n \/* stripping diagram *\/\n .diagram-card {\n background: var(--bg);\n padding: 40px 36px;\n border-top: 2px solid var(--accent2);\n grid-column: span 2;\n display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: center;\n }\n .diagram-img {\n border: 1px solid var(--border); overflow: hidden;\n }\n .diagram-img img { width: 100%; display: block; filter: grayscale(10%); }\n .diagram-text h3 {\n font-family: 'Bebas Neue', sans-serif;\n font-size: 32px; color: var(--white); margin-bottom: 16px; letter-spacing: 1px;\n }\n .diagram-text p { font-size: 14px; color: var(--muted); line-height: 1.8; margin-bottom: 12px; }\n .diagram-text p strong { color: var(--text); }\n .diagram-text a { color: var(--accent); text-decoration: none; }\n\n \/* formula block *\/\n .formula-block {\n background: var(--bg); border: 1px solid var(--border);\n border-left: 3px solid var(--accent);\n padding: 16px 20px; margin: 20px 0;\n font-family: 'DM Mono', monospace; font-size: 13px;\n color: var(--text); line-height: 1.6;\n }\n\n \/* \u2500\u2500 FOOTER \u2500\u2500 *\/\n footer {\n background: var(--surface);\n border-top: 1px solid var(--border);\n padding: 40px; text-align: center;\n }\n footer p { font-size: 12px; color: var(--muted); font-family: 'DM Mono', monospace; }\n\n \/* \u2500\u2500 ANIMATION \u2500\u2500 *\/\n @keyframes fadeUp {\n from { opacity: 0; transform: translateY(32px); }\n to { opacity: 1; transform: none; }\n }\n .reveal { opacity: 0; transform: translateY(24px); transition: opacity .7s ease, transform .7s ease; }\n .reveal.visible { opacity: 1; transform: none; }\n\n \/* \u2500\u2500 RESPONSIVE \u2500\u2500 *\/\n @media (max-width: 900px) {\n .intro-grid, .gallery-grid, .design-grid { grid-template-columns: 1fr; }\n .diagram-card { grid-column: span 1; grid-template-columns: 1fr; }\n .cap-types { grid-template-columns: 1fr; }\n section { padding: 60px 0; }\n .container { padding: 0 20px; }\n .hero-stats { gap: 28px; }\n }\n @media (max-width: 600px) {\n .hero-content { padding: 0 20px; }\n .tech-band, .feature-band { padding: 16px 20px; }\n }\n<\/style>\n<\/head>\n<body>\n\n\n<section class=\"hero\">\n <img decoding=\"async\" class=\"hero-img\" src=\"https:\/\/myplasticmold.com\/wp-content\/uploads\/2024\/06\/a-china-plastic-mold-and-injecti.jpg\" alt=\"Flip Top Cap Mould\"\/>\n <div class=\"hero-overlay\"><\/div>\n <div class=\"hero-content\">\n <div class=\"hero-label\">Topworks \u2014 China<\/div>\n <h1>Flip Top<br\/><span>Cap Mould<\/span><br\/>Bump Lotion &<br\/>Closure Mould<\/h1>\n <p class=\"hero-desc\">China’s leading reliable plastic cap mould supplier with over 15 years of experience. One stop service \u2014 quick delivery, rich experience, top quality.<\/p>\n <div class=\"hero-stats\">\n <div class=\"stat\">\n <div class=\"stat-num\">15+<\/div>\n <div class=\"stat-label\">Years Experience<\/div>\n <\/div>\n <div class=\"stat\">\n <div class=\"stat-num\">7<\/div>\n <div class=\"stat-label\">Cap Mould Types<\/div>\n <\/div>\n <div class=\"stat\">\n <div class=\"stat-num\">3<\/div>\n <div class=\"stat-label\">Steel Grades<\/div>\n <\/div>\n <\/div>\n <\/div>\n<\/section>\n\n\n<div class=\"tech-band\">\n <div class=\"tech-band-inner\">\n <div class=\"tech-pill\">P20 Steel<\/div>\n <div class=\"tech-pill\">H13 Steel<\/div>\n <div class=\"tech-pill\">S136 Steel<\/div>\n <div class=\"tech-pill\">Flip-Top Cap<\/div>\n <div class=\"tech-pill\">Hinged Closure<\/div>\n <div class=\"tech-pill\">Disc-Top \/ Push-Pull<\/div>\n <div class=\"tech-pill\">Yorker Spout<\/div>\n <div class=\"tech-pill\">Twist Open\/Close<\/div>\n <\/div>\n<\/div>\n\n\n<section class=\"intro\">\n <div class=\"container\">\n <div class=\"intro-grid\">\n <div class=\"intro-text reveal\">\n <div class=\"section-label\">About Topworks<\/div>\n <h2 class=\"section-title\">Your One-Stop<br\/>Cap Mould Partner<\/h2>\n <p>Topworks \u00e8 il principale fornitore cinese di stampi per tappi in plastica con oltre 15 anni di esperienza. Il nostro servizio unico offre consegne rapide, una ricca esperienza e stampi per tappi di alta qualit\u00e0.<\/p>\n <p>Abbiamo un'ampia scelta di stampi per tappi in plastica di alta qualit\u00e0, ideali per lo sviluppo del prodotto, la prototipazione e la produzione.<\/p>\n <p>Ci dedichiamo a <a href=\"https:\/\/myplasticmold.com\/it\/stampo-per-tappi-e-chiusure\"><strong>making quality cap moulds<\/strong><\/a> with mould steel P20, H13 and S136. Our cap mould range includes:<\/p>\n <ul class=\"cap-types\" style=\"margin-top:24px;\">\n <li><strong>Hinged Closures Mould<\/strong><\/li>\n <li><strong>Yorker Spout Mould<\/strong><\/li>\n <li><strong>Disc-Top Cap Mould<\/strong><\/li>\n <li><a href=\"https:\/\/myplasticmold.com\/it\/stampo-per-tappi-e-chiusure\"><strong>Flip-Top Cap Mould<\/strong><\/a><\/li>\n <li><strong>Push-Pull Cap Mould<\/strong><\/li>\n <li><strong>Twist Open\/Close Cap Mould<\/strong><\/li>\n <li><a href=\"https:\/\/myplasticmold.com\/it\/stampo-per-tappi-e-chiusure\"><strong>Flapper Closures Mould<\/strong><\/a><\/li>\n <\/ul>\n <\/div>\n \n <div class=\"reveal\" style=\"transition-delay:0.15s; display:flex; flex-direction:column; gap:16px;\">\n <div style=\"border:1px solid var(--border); overflow:hidden; border-radius:2px;\">\n <img decoding=\"async\" src=\"https:\/\/i0.wp.com\/fliptopcapmould.com\/wp-content\/uploads\/2020\/10\/Flip-top-cap-mould-1.jpg?resize=800%2C500&ssl=1\" alt=\"Flip top cap mould open cavity\" style=\"width:100%; display:block; filter:grayscale(10%); transition:filter .4s;\" onmouseover=\"this.style.filter='grayscale(0)'\" onmouseout=\"this.style.filter='grayscale(10%)'\"\/>\n <\/div>\n <div style=\"border:1px solid var(--border); overflow:hidden; border-radius:2px;\">\n <img decoding=\"async\" src=\"https:\/\/i0.wp.com\/fliptopcapmould.com\/wp-content\/uploads\/2020\/10\/Flip-top-cap.jpg?resize=800%2C470&ssl=1\" alt=\"Flip top cap products\" style=\"width:100%; display:block; filter:grayscale(10%); transition:filter .4s;\" onmouseover=\"this.style.filter='grayscale(0)'\" onmouseout=\"this.style.filter='grayscale(10%)'\"\/>\n <\/div>\n <\/div>\n <\/div>\n <\/div>\n<\/section>\n\n\n<div class=\"feature-band\">\n <div class=\"feature-band-inner\">\n <span style=\"font-size:20px;\">⚙<\/span>\n <p>Cap mould, <strong>Flip Top Cap mould<\/strong>, bump lotion mould and <strong>Closure mould<\/strong> \u2014 manufactured with P20, H13 and S136 mould steel for maximum durability and precision.<\/p>\n <\/div>\n<\/div>\n\n\n<section class=\"gallery-section\">\n <div class=\"container\">\n <div class=\"section-label reveal\">Product Gallery<\/div>\n <h2 class=\"section-title reveal\">Cap & Closure Moulds<\/h2>\n\n <div class=\"reveal\" style=\"transition-delay:0.1s;\">\n \n <div style=\"display:grid; grid-template-columns:repeat(3,1fr); gap:3px; margin-bottom:3px;\">\n <div class=\"gallery-item\">\n <a href=\"https:\/\/myplasticmold.com\/wp-content\/uploads\/2022\/05\/mmexport1459308328701_1.jpg\" target=\"_blank\">\n <img decoding=\"async\" src=\"https:\/\/myplasticmold.com\/wp-content\/uploads\/2022\/05\/mmexport1459308328701_1.jpg\" alt=\"stampo per tappi\"\/>\n <\/a>\n <div class=\"gallery-overlay\"><span class=\"gallery-zoom\">VIEW FULL<\/span><\/div>\n <\/div>\n <div class=\"gallery-item\">\n <a href=\"https:\/\/myplasticmold.com\/wp-content\/uploads\/2022\/05\/mmexport1459308333583_1.jpg\" target=\"_blank\">\n <img decoding=\"async\" src=\"https:\/\/myplasticmold.com\/wp-content\/uploads\/2022\/05\/mmexport1459308333583_1.jpg\" alt=\"stampo per tappi\"\/>\n <\/a>\n <div class=\"gallery-overlay\"><span class=\"gallery-zoom\">VIEW FULL<\/span><\/div>\n <\/div>\n <div class=\"gallery-item\">\n <a href=\"https:\/\/myplasticmold.com\/wp-content\/uploads\/2022\/05\/mmexport1459308340190_1.jpg\" target=\"_blank\">\n <img decoding=\"async\" src=\"https:\/\/myplasticmold.com\/wp-content\/uploads\/2022\/05\/mmexport1459308340190_1.jpg\" alt=\"stampo per tappi\"\/>\n <\/a>\n <div class=\"gallery-overlay\"><span class=\"gallery-zoom\">VIEW FULL<\/span><\/div>\n <\/div>\n <\/div>\n \n <div style=\"display:grid; grid-template-columns:repeat(3,1fr); gap:3px; margin-bottom:3px;\">\n <div class=\"gallery-item\">\n <a href=\"https:\/\/myplasticmold.com\/wp-content\/uploads\/2022\/05\/mmexport1459308345260_1.jpg\" target=\"_blank\">\n <img decoding=\"async\" src=\"https:\/\/myplasticmold.com\/wp-content\/uploads\/2022\/05\/mmexport1459308345260_1.jpg\" alt=\"flip top cap mould\"\/>\n <\/a>\n <div class=\"gallery-overlay\"><span class=\"gallery-zoom\">VIEW FULL<\/span><\/div>\n <\/div>\n <div class=\"gallery-item\">\n <a href=\"https:\/\/myplasticmold.com\/wp-content\/uploads\/2022\/05\/mmexport1459308348588_1.jpg\" target=\"_blank\">\n <img decoding=\"async\" src=\"https:\/\/myplasticmold.com\/wp-content\/uploads\/2022\/05\/mmexport1459308348588_1.jpg\" alt=\"closure mould\"\/>\n <\/a>\n <div class=\"gallery-overlay\"><span class=\"gallery-zoom\">VIEW FULL<\/span><\/div>\n <\/div>\n <div class=\"gallery-item\">\n <a href=\"https:\/\/myplasticmold.com\/wp-content\/uploads\/2022\/05\/mmexport1459308351939_1.jpg\" target=\"_blank\">\n <img decoding=\"async\" src=\"https:\/\/myplasticmold.com\/wp-content\/uploads\/2022\/05\/mmexport1459308351939_1.jpg\" alt=\"closure mould\"\/>\n <\/a>\n <div class=\"gallery-overlay\"><span class=\"gallery-zoom\">VIEW FULL<\/span><\/div>\n <\/div>\n <\/div>\n \n <div style=\"display:grid; grid-template-columns:repeat(3,1fr); gap:3px;\">\n <div class=\"gallery-item\">\n <a href=\"https:\/\/res.cloudinary.com\/steven-cheng\/images\/f_auto,q_auto\/v1652877649\/mmexport1459308404088_1\/mmexport1459308404088_1.jpg?_i=AA\" target=\"_blank\" rel=\"noopener\">\n <img decoding=\"async\" src=\"https:\/\/myplasticmold.com\/wp-content\/uploads\/2022\/05\/mmexport1459308404088_1.jpg\" alt=\"stampo per tappi\"\/>\n <\/a>\n <div class=\"gallery-overlay\"><span class=\"gallery-zoom\">VIEW FULL<\/span><\/div>\n <\/div>\n <div class=\"gallery-item\">\n <a href=\"https:\/\/myplasticmold.com\/wp-content\/uploads\/2022\/05\/mmexport1459308416340_1.jpg\" target=\"_blank\">\n <img decoding=\"async\" src=\"https:\/\/myplasticmold.com\/wp-content\/uploads\/2022\/05\/mmexport1459308416340_1.jpg\" alt=\"stampo per tappi in plastica\"\/>\n <\/a>\n <div class=\"gallery-overlay\"><span class=\"gallery-zoom\">VIEW FULL<\/span><\/div>\n <\/div>\n <div class=\"gallery-item\">\n <a href=\"https:\/\/myplasticmold.com\/wp-content\/uploads\/2022\/05\/mmexport1459308419311_1.jpg\" target=\"_blank\">\n <img decoding=\"async\" src=\"https:\/\/myplasticmold.com\/wp-content\/uploads\/2022\/05\/mmexport1459308419311_1.jpg\" alt=\"stampo per tappi in plastica\"\/>\n <\/a>\n <div class=\"gallery-overlay\"><span class=\"gallery-zoom\">VIEW FULL<\/span><\/div>\n <\/div>\n <\/div>\n <\/div>\n <\/div>\n<\/section>\n\n\n<section class=\"design-guide\">\n <div class=\"container\">\n <div class=\"section-label reveal\">Engineering Guide<\/div>\n <h2 class=\"section-title reveal\">How to Design Screw Cap,<br\/>Lid & Closure Moulds<\/h2>\n <p class=\"design-intro reveal\">\n Undercuts on the inside of a cap \u2014 typically inside threads, snap-on ribs, or major undercuts that are part of the product shape \u2014 require careful design decisions. Inside threads usually occur in caps but also appear in many technical products such as plastic pipe hardware. The planned method of manufacture (molding, or machining after molding) should be considered. The <strong>stampo per tappi<\/strong> could be much simpler if the cap is <a href=\"https:\/\/en.wikipedia.org\/wiki\/Screw_thread\" target=\"_blank\" rel=\"noopener\">filettato<\/a> after molding. It is more important to arrive at the lowest total cost product than at the most elegant method of manufacture.\n <\/p>\n\n <div class=\"design-grid\">\n\n \n <div class=\"design-card reveal\">\n <div class=\"design-card-num\">01<\/div>\n <div class=\"design-card-title\">Inside Threads on Cap<\/div>\n <div class=\"design-card-body\">\n <p>If the thread must be molded, there are <strong>due possibilit\u00e0 di rimozione del prodotto dal nucleo: svitando o spellando.<\/strong><\/p>\n <p style=\"margin-top:12px;\">The designer should carefully consider production quantities required. Machining after molding can reduce cap mould complexity and cost significantly for lower-volume runs.<\/p>\n <\/div>\n <\/div>\n\n \n <div class=\"design-card reveal\" style=\"transition-delay:0.1s;\">\n <div class=\"design-card-num\">02<\/div>\n <div class=\"design-card-title\">Unscrewing Method<\/div>\n <div class=\"design-card-body\">\n <p>Threads designed to standard usually consist of more than one pitch. In many screw caps for bottles, jars, and toothpaste tubes, <strong>two to six pitches are quite common<\/strong>.<\/p>\n <p style=\"margin-top:12px;\">More turns mean longer products, more plastic, more molding time, and longer cycles. In many closures, a thread length of one or two pitches is sufficient for good holding power.<\/p>\n <p style=\"margin-top:12px;\">Il <em><strong>anello spogliatore<\/strong><\/em> holds the cap so it can be unscrewed away from the core. The cap requires ribs or projections on the outside where an external unscrewing device can engage. The design of these aids should be discussed with the <a href=\"https:\/\/myplasticmold.com\/golden-rules-of-custom-injection-mold-design.html\/\">progettista di stampi<\/a>.<\/p>\n <p style=\"margin-top:12px;\">Any unscrewing method requires either complicated <strong>stampi per tappi<\/strong> o <a href=\"https:\/\/en.wikipedia.org\/wiki\/Injection_molding_machine\" target=\"_blank\" rel=\"noopener\">macchine speciali<\/a>. Molding cycles are also slower than comparable products that need not be unscrewed.<\/p>\n <\/div>\n <\/div>\n\n \n <div class=\"design-card reveal\">\n <div class=\"design-card-num\">03<\/div>\n <div class=\"design-card-title\">Stripping Ejection (Force Ejection)<\/div>\n <div class=\"design-card-body\">\n <p>Stripping is the easiest and often the lowest cost solution for ejecting the cap or closure. As the <a href=\"https:\/\/myplasticmold.com\/it\/stampo-per-tappi-e-chiusure\">stampo per tappi<\/a> opens and after the cavity has moved away from the core side, the ejection starts caused by the stripper moving forward.<\/p>\n <p style=\"margin-top:12px;\">In doing so, the plastic cap is pushed over the hump in the core, causing the plastic to expand so that the portion inside the groove can slip out.<\/p>\n <p style=\"margin-top:12px;\">The ease of stripping depends on many equally important factors: thread angle, projection height, diameter, and the type of plastic and its modulus of elasticity.<\/p>\n <\/div>\n <\/div>\n\n \n <div class=\"design-card reveal\" style=\"transition-delay:0.1s;\">\n <div class=\"design-card-num\">04<\/div>\n <div class=\"design-card-title\">Factors Affecting Stripping Ability<\/div>\n <div class=\"design-card-body\">\n <p><strong>Thread angle (\u03b1):<\/strong> The greater the angle, the more difficult the stripping action. A sharp angle (\u03b1 = 90\u00b0) makes ejection virtually impossible \u2014 the plastic cap would shear off in the groove rather than pull out.<\/p>\n <p style=\"margin-top:12px;\"><strong>Height “h” vs Diameter “d”:<\/strong> The percentage of stretching f is directly proportional to height h and inversely proportional to diameter d:<\/p>\n <div class=\"formula-block\">f \u221d h\/d<br\/>C = d\u03c0 (circumference of core circle)<\/div>\n <p>The greater the cap diameter d, the easier the cap will slip out of its groove. A cap from relatively stiff plastic could be stripped if d is large, but would break during ejection if d is small.<\/p>\n <p style=\"margin-top:12px;\"><strong>Number of threads (pitches):<\/strong> The easiest way to strip is to specify only one thread (one pitch) so that the stripped thread will not slide into an adjoining groove but continue to slide uninterrupted off the core.<\/p>\n <p style=\"margin-top:12px;\">Also note that the finish of the groove has some influence on the ease of stripping, especially with materials requiring high polish for good ejection.<\/p>\n <\/div>\n <\/div>\n\n \n <div class=\"design-card diagram-card reveal\">\n <div class=\"diagram-img\">\n <img decoding=\"async\" src=\"https:\/\/myplasticmold.com\/wp-content\/uploads\/2020\/04\/screw_profile_ny6d8l.png\" alt=\"Screw profile stripping diagram \u2014 Figure 1\"\/>\n <\/div>\n <div class=\"diagram-text\">\n <h3>Figure 1 \u2014 Stripping Influences<\/h3>\n <p>Influences affecting the ability to strip a cap. Cross section of a product ejected using a stripper to push the plastic over the “hump” in the core.<\/p>\n <p>The greater the angle \u03b1 is, the greater the difficulty in stripping. <strong>Screw threads could have a 90\u00b0 angle if absolutely required<\/strong>, but that would definitely call for unscrewing \u2014 stripping would not be possible.<\/p>\n <p>Note that many screw threads \u2014 especially threads for closures \u2014 have standardized shapes which originally evolved from threads on glass bottles and jars. Such standards should be followed, and their large tolerances used to obtain maximum benefits for plastic threads.<\/p>\n <p>By considering all factors influencing stripping, the designer will succeed in creating a screw cap with the proper shape of thread cross section and a suitable h\/d ratio so that even a relatively stiff plastic can be readily stripped, without the need for an unscrewing <strong>cap mold<\/strong>.<\/p>\n <p style=\"margin-top:16px; font-family:'DM Mono',monospace; font-size:11px; color:var(--accent); letter-spacing:1px; text-transform:uppercase;\">In quantity applications, the core can also be removable from the mold and unscrewed from the product outside the mold \u2014 by hand or using fixtures.<\/p>\n <\/div>\n <\/div>\n\n <\/div>\n <\/div>\n<\/section>\n\n\n<footer>\n <p>\u00a9 Topworks Plastic Mold \u2014 All content, images, and backlinks preserved. Redesigned UI only.<\/p>\n<\/footer>\n\n<script>\n const io = new IntersectionObserver(entries => {\n entries.forEach(e => { if (e.isIntersecting) { e.target.classList.add('visible'); io.unobserve(e.target); } });\n }, { threshold: 0.08 });\n document.querySelectorAll('.reveal').forEach(el => io.observe(el));\n<\/script>\n<\/body>\n<\/html>","protected":false},"excerpt":{"rendered":"<p>China Flip Top Cap Mould | Topworks Topworks \u2014 China Flip TopCap MouldBump Lotion &Closure Mould China’s leading reliable plastic cap mould supplier with over 15 years of experience. One stop service \u2014 quick delivery, rich experience, top quality. 15+ Years Experience 7 Cap Mould Types 3 Steel Grades P20 Steel H13 Steel S136 Steel […]<\/p>\n","protected":false},"author":3,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-5177","page","type-page","status-publish","hentry"],"blocksy_meta":{"styles_descriptor":{"styles":{"desktop":"","tablet":"","mobile":""},"google_fonts":[],"version":6}},"_links":{"self":[{"href":"https:\/\/myplasticmold.com\/it\/wp-json\/wp\/v2\/pages\/5177","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/myplasticmold.com\/it\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/myplasticmold.com\/it\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/myplasticmold.com\/it\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/myplasticmold.com\/it\/wp-json\/wp\/v2\/comments?post=5177"}],"version-history":[{"count":2,"href":"https:\/\/myplasticmold.com\/it\/wp-json\/wp\/v2\/pages\/5177\/revisions"}],"predecessor-version":[{"id":12963,"href":"https:\/\/myplasticmold.com\/it\/wp-json\/wp\/v2\/pages\/5177\/revisions\/12963"}],"wp:attachment":[{"href":"https:\/\/myplasticmold.com\/it\/wp-json\/wp\/v2\/media?parent=5177"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}

{"id":5177,"date":"2016-03-30T11:59:41","date_gmt":"2016-03-30T03:59:41","guid":{"rendered":"https:\/\/myplasticmold.com\/?page_id=5177"},"modified":"2026-03-25T17:53:24","modified_gmt":"2026-03-25T09:53:24","slug":"stampo-per-tappi-e-chiusure","status":"publish","type":"page","link":"https:\/\/myplasticmold.com\/it\/stampo-per-tappi-e-chiusure","title":{"rendered":"Cina Flip Top Cap stampo, bump lozione stampo azienda in Cina"},"content":{"rendered":"\n\n\n\n\nChina Flip Top Cap Mould | Topworks<\/title>\n<link href=\"https:\/\/fonts.googleapis.com\/css2?family=Bebas+Neue&family=DM+Sans:ital,opsz,wght@0,9..40,300;0,9..40,400;0,9..40,500;0,9..40,700;1,9..40,300&family=DM+Mono:wght@400;500&display=swap\" rel=\"stylesheet\"\/>\n<style>\n :root {\n --bg: #0d0d0d;\n --surface: #161616;\n --surface2: #1f1f1f;\n --border: #2a2a2a;\n --accent: #e8b84b;\n --accent2: #c0392b;\n --text: #e8e4dc;\n --muted: #8a8480;\n --white: #faf8f4;\n }\n\n *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }\n html { scroll-behavior: smooth; }\n body {\n background: var(--bg);\n color: var(--text);\n font-family: 'DM Sans', sans-serif;\n font-weight: 300;\n line-height: 1.7;\n overflow-x: hidden;\n }\n\n \/* \u2500\u2500 HERO \u2500\u2500 *\/\n .hero {\n position: relative;\n min-height: 88vh;\n display: flex;\n align-items: center;\n overflow: hidden;\n background: #080808;\n }\n .hero-img {\n position: absolute; inset: 0;\n width: 100%; height: 100%;\n object-fit: cover;\n opacity: 0.28;\n filter: grayscale(50%);\n }\n .hero-overlay {\n position: absolute; inset: 0;\n background: linear-gradient(135deg, rgba(8,8,8,0.93) 40%, rgba(232,184,75,0.07) 100%);\n }\n .hero-content {\n position: relative;\n max-width: 1200px;\n margin: 0 auto;\n padding: 0 40px;\n animation: fadeUp 1s ease both;\n }\n .hero-label {\n display: inline-flex;\n align-items: center;\n gap: 10px;\n font-family: 'DM Mono', monospace;\n font-size: 11px;\n letter-spacing: 3px;\n text-transform: uppercase;\n color: var(--accent);\n margin-bottom: 24px;\n }\n .hero-label::before {\n content: ''; 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font-size: 10px;\n letter-spacing: 3px; text-transform: uppercase;\n color: var(--accent); margin-bottom: 20px;\n }\n .section-label::before {\n content: ''; display: block;\n width: 24px; height: 1px; background: var(--accent);\n }\n .section-title {\n font-family: 'Bebas Neue', sans-serif;\n font-size: clamp(36px, 5vw, 62px);\n letter-spacing: 1px; color: var(--white);\n line-height: 1; margin-bottom: 24px;\n }\n\n \/* \u2500\u2500 TECH BAND \u2500\u2500 *\/\n .tech-band {\n background: var(--surface2);\n border-top: 1px solid var(--border);\n border-bottom: 1px solid var(--border);\n padding: 28px 40px;\n }\n .tech-band-inner {\n max-width: 1200px; margin: 0 auto;\n display: flex; gap: 40px; flex-wrap: wrap; align-items: center;\n }\n .tech-pill {\n display: flex; align-items: center; gap: 8px;\n font-size: 12px; font-family: 'DM Mono', monospace; color: var(--muted);\n }\n .tech-pill::before { content: '\u25cf'; font-size: 8px; color: var(--accent); }\n\n \/* \u2500\u2500 FEATURE BAND \u2500\u2500 *\/\n .feature-band { background: var(--accent); padding: 20px 40px; }\n .feature-band-inner {\n max-width: 1200px; margin: 0 auto;\n display: flex; align-items: center; gap: 16px;\n }\n .feature-band p { color: #0d0d0d; font-size: 15px; font-weight: 500; }\n\n \/* \u2500\u2500 INTRO \u2500\u2500 *\/\n .intro { background: var(--surface); border-top: 1px solid var(--border); }\n .intro-grid {\n display: grid; grid-template-columns: 1fr 1fr;\n gap: 80px; align-items: start;\n }\n .intro-text p { font-size: 16px; color: var(--muted); margin-bottom: 18px; line-height: 1.85; }\n .intro-text a { color: var(--accent); text-decoration: none; border-bottom: 1px solid transparent; transition: border-color .2s; }\n .intro-text a:hover { border-color: var(--accent); }\n\n \/* cap types list *\/\n .cap-types {\n list-style: none; margin-top: 8px;\n display: grid; grid-template-columns: 1fr 1fr; gap: 8px 24px;\n }\n .cap-types li {\n display: flex; align-items: center; gap: 10px;\n font-size: 14px; font-weight: 500; color: var(--text);\n padding: 10px 0; border-bottom: 1px solid var(--border);\n }\n .cap-types li::before {\n content: '\u2192'; color: var(--accent);\n font-family: 'DM Mono', monospace; font-size: 12px;\n }\n .cap-types a { color: var(--text); text-decoration: none; transition: color .2s; }\n .cap-types a:hover { color: var(--accent); }\n\n \/* \u2500\u2500 GALLERY \u2500\u2500 *\/\n .gallery-section { background: var(--bg); }\n .gallery-hero-img {\n width: 100%; display: block;\n border: 1px solid var(--border); margin-bottom: 3px;\n filter: grayscale(15%); transition: filter .4s;\n }\n .gallery-hero-img:hover { filter: grayscale(0); }\n .gallery-grid {\n display: grid; grid-template-columns: repeat(3, 1fr); gap: 3px; margin-top: 3px;\n }\n .gallery-item {\n overflow: hidden; position: relative; aspect-ratio: 4\/3; background: var(--surface2);\n }\n .gallery-item img {\n width: 100%; height: 100%; object-fit: cover;\n filter: grayscale(20%); transition: transform .5s ease, filter .4s;\n }\n .gallery-item:hover img { transform: scale(1.05); filter: grayscale(0); }\n .gallery-overlay {\n position: absolute; inset: 0;\n background: rgba(232,184,75,0); transition: background .3s;\n display: flex; align-items: center; justify-content: center;\n }\n .gallery-item:hover .gallery-overlay { background: rgba(232,184,75,0.08); }\n .gallery-zoom {\n font-size: 11px; font-family: 'DM Mono', monospace;\n letter-spacing: 2px; color: var(--white);\n opacity: 0; transform: translateY(6px); transition: all .3s;\n }\n .gallery-item:hover .gallery-zoom { opacity: 1; transform: none; }\n\n \/* \u2500\u2500 DESIGN GUIDE \u2500\u2500 *\/\n .design-guide { background: var(--surface); }\n .design-intro {\n font-size: 16px; color: var(--muted); line-height: 1.85;\n max-width: 760px; margin-bottom: 64px;\n }\n .design-intro a { color: var(--accent); text-decoration: none; }\n\n .design-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 2px; }\n\n .design-card {\n background: var(--surface2);\n padding: 40px 36px;\n border-top: 2px solid transparent;\n transition: border-color .3s, background .3s;\n }\n .design-card:hover { border-top-color: var(--accent); background: #232323; }\n\n .design-card-num {\n font-family: 'Bebas Neue', sans-serif;\n font-size: 64px; color: var(--border); line-height: 1;\n margin-bottom: 12px; transition: color .2s;\n }\n .design-card:hover .design-card-num { color: var(--accent); }\n .design-card-title {\n font-size: 15px; font-weight: 600; color: var(--white);\n margin-bottom: 14px; text-transform: uppercase;\n letter-spacing: 0.5px; line-height: 1.3;\n }\n .design-card-body { font-size: 13px; color: var(--muted); line-height: 1.8; }\n .design-card-body a { color: var(--accent); text-decoration: none; }\n .design-card-body strong { color: var(--text); font-weight: 500; }\n .design-card-body em { font-style: italic; }\n\n \/* stripping diagram *\/\n .diagram-card {\n background: var(--bg);\n padding: 40px 36px;\n border-top: 2px solid var(--accent2);\n grid-column: span 2;\n display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: center;\n }\n .diagram-img {\n border: 1px solid var(--border); overflow: hidden;\n }\n .diagram-img img { width: 100%; display: block; filter: grayscale(10%); }\n .diagram-text h3 {\n font-family: 'Bebas Neue', sans-serif;\n font-size: 32px; color: var(--white); margin-bottom: 16px; letter-spacing: 1px;\n }\n .diagram-text p { font-size: 14px; color: var(--muted); line-height: 1.8; margin-bottom: 12px; }\n .diagram-text p strong { color: var(--text); }\n .diagram-text a { color: var(--accent); text-decoration: none; }\n\n \/* formula block *\/\n .formula-block {\n background: var(--bg); border: 1px solid var(--border);\n border-left: 3px solid var(--accent);\n padding: 16px 20px; margin: 20px 0;\n font-family: 'DM Mono', monospace; font-size: 13px;\n color: var(--text); line-height: 1.6;\n }\n\n \/* \u2500\u2500 FOOTER \u2500\u2500 *\/\n footer {\n background: var(--surface);\n border-top: 1px solid var(--border);\n padding: 40px; text-align: center;\n }\n footer p { font-size: 12px; color: var(--muted); font-family: 'DM Mono', monospace; }\n\n \/* \u2500\u2500 ANIMATION \u2500\u2500 *\/\n @keyframes fadeUp {\n from { opacity: 0; transform: translateY(32px); }\n to { opacity: 1; transform: none; }\n }\n .reveal { opacity: 0; transform: translateY(24px); transition: opacity .7s ease, transform .7s ease; }\n .reveal.visible { opacity: 1; transform: none; }\n\n \/* \u2500\u2500 RESPONSIVE \u2500\u2500 *\/\n @media (max-width: 900px) {\n .intro-grid, .gallery-grid, .design-grid { grid-template-columns: 1fr; }\n .diagram-card { grid-column: span 1; grid-template-columns: 1fr; }\n .cap-types { grid-template-columns: 1fr; }\n section { padding: 60px 0; }\n .container { padding: 0 20px; }\n .hero-stats { gap: 28px; }\n }\n @media (max-width: 600px) {\n .hero-content { padding: 0 20px; }\n .tech-band, .feature-band { padding: 16px 20px; }\n }\n<\/style>\n<\/head>\n<body>\n\n\n<section class=\"hero\">\n <img decoding=\"async\" class=\"hero-img\" src=\"https:\/\/myplasticmold.com\/wp-content\/uploads\/2024\/06\/a-china-plastic-mold-and-injecti.jpg\" alt=\"Flip Top Cap Mould\"\/>\n <div class=\"hero-overlay\"><\/div>\n <div class=\"hero-content\">\n <div class=\"hero-label\">Topworks \u2014 China<\/div>\n <h1>Flip Top<br\/><span>Cap Mould<\/span><br\/>Bump Lotion &<br\/>Closure Mould<\/h1>\n <p class=\"hero-desc\">China’s leading reliable plastic cap mould supplier with over 15 years of experience. One stop service \u2014 quick delivery, rich experience, top quality.<\/p>\n <div class=\"hero-stats\">\n <div class=\"stat\">\n <div class=\"stat-num\">15+<\/div>\n <div class=\"stat-label\">Years Experience<\/div>\n <\/div>\n <div class=\"stat\">\n <div class=\"stat-num\">7<\/div>\n <div class=\"stat-label\">Cap Mould Types<\/div>\n <\/div>\n <div class=\"stat\">\n <div class=\"stat-num\">3<\/div>\n <div class=\"stat-label\">Steel Grades<\/div>\n <\/div>\n <\/div>\n <\/div>\n<\/section>\n\n\n<div class=\"tech-band\">\n <div class=\"tech-band-inner\">\n <div class=\"tech-pill\">P20 Steel<\/div>\n <div class=\"tech-pill\">H13 Steel<\/div>\n <div class=\"tech-pill\">S136 Steel<\/div>\n <div class=\"tech-pill\">Flip-Top Cap<\/div>\n <div class=\"tech-pill\">Hinged Closure<\/div>\n <div class=\"tech-pill\">Disc-Top \/ Push-Pull<\/div>\n <div class=\"tech-pill\">Yorker Spout<\/div>\n <div class=\"tech-pill\">Twist Open\/Close<\/div>\n <\/div>\n<\/div>\n\n\n<section class=\"intro\">\n <div class=\"container\">\n <div class=\"intro-grid\">\n <div class=\"intro-text reveal\">\n <div class=\"section-label\">About Topworks<\/div>\n <h2 class=\"section-title\">Your One-Stop<br\/>Cap Mould Partner<\/h2>\n <p>Topworks \u00e8 il principale fornitore cinese di stampi per tappi in plastica con oltre 15 anni di esperienza. Il nostro servizio unico offre consegne rapide, una ricca esperienza e stampi per tappi di alta qualit\u00e0.<\/p>\n <p>Abbiamo un'ampia scelta di stampi per tappi in plastica di alta qualit\u00e0, ideali per lo sviluppo del prodotto, la prototipazione e la produzione.<\/p>\n <p>Ci dedichiamo a <a href=\"https:\/\/myplasticmold.com\/it\/stampo-per-tappi-e-chiusure\"><strong>making quality cap moulds<\/strong><\/a> with mould steel P20, H13 and S136. Our cap mould range includes:<\/p>\n <ul class=\"cap-types\" style=\"margin-top:24px;\">\n <li><strong>Hinged Closures Mould<\/strong><\/li>\n <li><strong>Yorker Spout Mould<\/strong><\/li>\n <li><strong>Disc-Top Cap Mould<\/strong><\/li>\n <li><a href=\"https:\/\/myplasticmold.com\/it\/stampo-per-tappi-e-chiusure\"><strong>Flip-Top Cap Mould<\/strong><\/a><\/li>\n <li><strong>Push-Pull Cap Mould<\/strong><\/li>\n <li><strong>Twist Open\/Close Cap Mould<\/strong><\/li>\n <li><a href=\"https:\/\/myplasticmold.com\/it\/stampo-per-tappi-e-chiusure\"><strong>Flapper Closures Mould<\/strong><\/a><\/li>\n <\/ul>\n <\/div>\n \n <div class=\"reveal\" style=\"transition-delay:0.15s; display:flex; flex-direction:column; gap:16px;\">\n <div style=\"border:1px solid var(--border); overflow:hidden; border-radius:2px;\">\n <img decoding=\"async\" src=\"https:\/\/i0.wp.com\/fliptopcapmould.com\/wp-content\/uploads\/2020\/10\/Flip-top-cap-mould-1.jpg?resize=800%2C500&ssl=1\" alt=\"Flip top cap mould open cavity\" style=\"width:100%; display:block; filter:grayscale(10%); transition:filter .4s;\" onmouseover=\"this.style.filter='grayscale(0)'\" onmouseout=\"this.style.filter='grayscale(10%)'\"\/>\n <\/div>\n <div style=\"border:1px solid var(--border); overflow:hidden; border-radius:2px;\">\n <img decoding=\"async\" src=\"https:\/\/i0.wp.com\/fliptopcapmould.com\/wp-content\/uploads\/2020\/10\/Flip-top-cap.jpg?resize=800%2C470&ssl=1\" alt=\"Flip top cap products\" style=\"width:100%; display:block; filter:grayscale(10%); transition:filter .4s;\" onmouseover=\"this.style.filter='grayscale(0)'\" onmouseout=\"this.style.filter='grayscale(10%)'\"\/>\n <\/div>\n <\/div>\n <\/div>\n <\/div>\n<\/section>\n\n\n<div class=\"feature-band\">\n <div class=\"feature-band-inner\">\n <span style=\"font-size:20px;\">⚙<\/span>\n <p>Cap mould, <strong>Flip Top Cap mould<\/strong>, bump lotion mould and <strong>Closure mould<\/strong> \u2014 manufactured with P20, H13 and S136 mould steel for maximum durability and precision.<\/p>\n <\/div>\n<\/div>\n\n\n<section class=\"gallery-section\">\n <div class=\"container\">\n <div class=\"section-label reveal\">Product Gallery<\/div>\n <h2 class=\"section-title reveal\">Cap & Closure Moulds<\/h2>\n\n <div class=\"reveal\" style=\"transition-delay:0.1s;\">\n \n <div style=\"display:grid; grid-template-columns:repeat(3,1fr); gap:3px; margin-bottom:3px;\">\n <div class=\"gallery-item\">\n <a href=\"https:\/\/myplasticmold.com\/wp-content\/uploads\/2022\/05\/mmexport1459308328701_1.jpg\" target=\"_blank\">\n <img decoding=\"async\" src=\"https:\/\/myplasticmold.com\/wp-content\/uploads\/2022\/05\/mmexport1459308328701_1.jpg\" alt=\"stampo per tappi\"\/>\n <\/a>\n <div class=\"gallery-overlay\"><span class=\"gallery-zoom\">VIEW FULL<\/span><\/div>\n <\/div>\n <div class=\"gallery-item\">\n <a href=\"https:\/\/myplasticmold.com\/wp-content\/uploads\/2022\/05\/mmexport1459308333583_1.jpg\" target=\"_blank\">\n <img decoding=\"async\" src=\"https:\/\/myplasticmold.com\/wp-content\/uploads\/2022\/05\/mmexport1459308333583_1.jpg\" alt=\"stampo per tappi\"\/>\n <\/a>\n <div class=\"gallery-overlay\"><span class=\"gallery-zoom\">VIEW FULL<\/span><\/div>\n <\/div>\n <div class=\"gallery-item\">\n <a href=\"https:\/\/myplasticmold.com\/wp-content\/uploads\/2022\/05\/mmexport1459308340190_1.jpg\" target=\"_blank\">\n <img decoding=\"async\" src=\"https:\/\/myplasticmold.com\/wp-content\/uploads\/2022\/05\/mmexport1459308340190_1.jpg\" alt=\"stampo per tappi\"\/>\n <\/a>\n <div class=\"gallery-overlay\"><span class=\"gallery-zoom\">VIEW FULL<\/span><\/div>\n <\/div>\n <\/div>\n \n <div style=\"display:grid; grid-template-columns:repeat(3,1fr); gap:3px; margin-bottom:3px;\">\n <div class=\"gallery-item\">\n <a href=\"https:\/\/myplasticmold.com\/wp-content\/uploads\/2022\/05\/mmexport1459308345260_1.jpg\" target=\"_blank\">\n <img decoding=\"async\" src=\"https:\/\/myplasticmold.com\/wp-content\/uploads\/2022\/05\/mmexport1459308345260_1.jpg\" alt=\"flip top cap mould\"\/>\n <\/a>\n <div class=\"gallery-overlay\"><span class=\"gallery-zoom\">VIEW FULL<\/span><\/div>\n <\/div>\n <div class=\"gallery-item\">\n <a href=\"https:\/\/myplasticmold.com\/wp-content\/uploads\/2022\/05\/mmexport1459308348588_1.jpg\" target=\"_blank\">\n <img decoding=\"async\" src=\"https:\/\/myplasticmold.com\/wp-content\/uploads\/2022\/05\/mmexport1459308348588_1.jpg\" alt=\"closure mould\"\/>\n <\/a>\n <div class=\"gallery-overlay\"><span class=\"gallery-zoom\">VIEW FULL<\/span><\/div>\n <\/div>\n <div class=\"gallery-item\">\n <a href=\"https:\/\/myplasticmold.com\/wp-content\/uploads\/2022\/05\/mmexport1459308351939_1.jpg\" target=\"_blank\">\n <img decoding=\"async\" src=\"https:\/\/myplasticmold.com\/wp-content\/uploads\/2022\/05\/mmexport1459308351939_1.jpg\" alt=\"closure mould\"\/>\n <\/a>\n <div class=\"gallery-overlay\"><span class=\"gallery-zoom\">VIEW FULL<\/span><\/div>\n <\/div>\n <\/div>\n \n <div style=\"display:grid; grid-template-columns:repeat(3,1fr); gap:3px;\">\n <div class=\"gallery-item\">\n <a href=\"https:\/\/res.cloudinary.com\/steven-cheng\/images\/f_auto,q_auto\/v1652877649\/mmexport1459308404088_1\/mmexport1459308404088_1.jpg?_i=AA\" target=\"_blank\" rel=\"noopener\">\n <img decoding=\"async\" src=\"https:\/\/myplasticmold.com\/wp-content\/uploads\/2022\/05\/mmexport1459308404088_1.jpg\" alt=\"stampo per tappi\"\/>\n <\/a>\n <div class=\"gallery-overlay\"><span class=\"gallery-zoom\">VIEW FULL<\/span><\/div>\n <\/div>\n <div class=\"gallery-item\">\n <a href=\"https:\/\/myplasticmold.com\/wp-content\/uploads\/2022\/05\/mmexport1459308416340_1.jpg\" target=\"_blank\">\n <img decoding=\"async\" src=\"https:\/\/myplasticmold.com\/wp-content\/uploads\/2022\/05\/mmexport1459308416340_1.jpg\" alt=\"stampo per tappi in plastica\"\/>\n <\/a>\n <div class=\"gallery-overlay\"><span class=\"gallery-zoom\">VIEW FULL<\/span><\/div>\n <\/div>\n <div class=\"gallery-item\">\n <a href=\"https:\/\/myplasticmold.com\/wp-content\/uploads\/2022\/05\/mmexport1459308419311_1.jpg\" target=\"_blank\">\n <img decoding=\"async\" src=\"https:\/\/myplasticmold.com\/wp-content\/uploads\/2022\/05\/mmexport1459308419311_1.jpg\" alt=\"stampo per tappi in plastica\"\/>\n <\/a>\n <div class=\"gallery-overlay\"><span class=\"gallery-zoom\">VIEW FULL<\/span><\/div>\n <\/div>\n <\/div>\n <\/div>\n <\/div>\n<\/section>\n\n\n<section class=\"design-guide\">\n <div class=\"container\">\n <div class=\"section-label reveal\">Engineering Guide<\/div>\n <h2 class=\"section-title reveal\">How to Design Screw Cap,<br\/>Lid & Closure Moulds<\/h2>\n <p class=\"design-intro reveal\">\n Undercuts on the inside of a cap \u2014 typically inside threads, snap-on ribs, or major undercuts that are part of the product shape \u2014 require careful design decisions. Inside threads usually occur in caps but also appear in many technical products such as plastic pipe hardware. The planned method of manufacture (molding, or machining after molding) should be considered. The <strong>stampo per tappi<\/strong> could be much simpler if the cap is <a href=\"https:\/\/en.wikipedia.org\/wiki\/Screw_thread\" target=\"_blank\" rel=\"noopener\">filettato<\/a> after molding. It is more important to arrive at the lowest total cost product than at the most elegant method of manufacture.\n <\/p>\n\n <div class=\"design-grid\">\n\n \n <div class=\"design-card reveal\">\n <div class=\"design-card-num\">01<\/div>\n <div class=\"design-card-title\">Inside Threads on Cap<\/div>\n <div class=\"design-card-body\">\n <p>If the thread must be molded, there are <strong>due possibilit\u00e0 di rimozione del prodotto dal nucleo: svitando o spellando.<\/strong><\/p>\n <p style=\"margin-top:12px;\">The designer should carefully consider production quantities required. Machining after molding can reduce cap mould complexity and cost significantly for lower-volume runs.<\/p>\n <\/div>\n <\/div>\n\n \n <div class=\"design-card reveal\" style=\"transition-delay:0.1s;\">\n <div class=\"design-card-num\">02<\/div>\n <div class=\"design-card-title\">Unscrewing Method<\/div>\n <div class=\"design-card-body\">\n <p>Threads designed to standard usually consist of more than one pitch. In many screw caps for bottles, jars, and toothpaste tubes, <strong>two to six pitches are quite common<\/strong>.<\/p>\n <p style=\"margin-top:12px;\">More turns mean longer products, more plastic, more molding time, and longer cycles. In many closures, a thread length of one or two pitches is sufficient for good holding power.<\/p>\n <p style=\"margin-top:12px;\">Il <em><strong>anello spogliatore<\/strong><\/em> holds the cap so it can be unscrewed away from the core. The cap requires ribs or projections on the outside where an external unscrewing device can engage. The design of these aids should be discussed with the <a href=\"https:\/\/myplasticmold.com\/golden-rules-of-custom-injection-mold-design.html\/\">progettista di stampi<\/a>.<\/p>\n <p style=\"margin-top:12px;\">Any unscrewing method requires either complicated <strong>stampi per tappi<\/strong> o <a href=\"https:\/\/en.wikipedia.org\/wiki\/Injection_molding_machine\" target=\"_blank\" rel=\"noopener\">macchine speciali<\/a>. Molding cycles are also slower than comparable products that need not be unscrewed.<\/p>\n <\/div>\n <\/div>\n\n \n <div class=\"design-card reveal\">\n <div class=\"design-card-num\">03<\/div>\n <div class=\"design-card-title\">Stripping Ejection (Force Ejection)<\/div>\n <div class=\"design-card-body\">\n <p>Stripping is the easiest and often the lowest cost solution for ejecting the cap or closure. As the <a href=\"https:\/\/myplasticmold.com\/it\/stampo-per-tappi-e-chiusure\">stampo per tappi<\/a> opens and after the cavity has moved away from the core side, the ejection starts caused by the stripper moving forward.<\/p>\n <p style=\"margin-top:12px;\">In doing so, the plastic cap is pushed over the hump in the core, causing the plastic to expand so that the portion inside the groove can slip out.<\/p>\n <p style=\"margin-top:12px;\">The ease of stripping depends on many equally important factors: thread angle, projection height, diameter, and the type of plastic and its modulus of elasticity.<\/p>\n <\/div>\n <\/div>\n\n \n <div class=\"design-card reveal\" style=\"transition-delay:0.1s;\">\n <div class=\"design-card-num\">04<\/div>\n <div class=\"design-card-title\">Factors Affecting Stripping Ability<\/div>\n <div class=\"design-card-body\">\n <p><strong>Thread angle (\u03b1):<\/strong> The greater the angle, the more difficult the stripping action. A sharp angle (\u03b1 = 90\u00b0) makes ejection virtually impossible \u2014 the plastic cap would shear off in the groove rather than pull out.<\/p>\n <p style=\"margin-top:12px;\"><strong>Height “h” vs Diameter “d”:<\/strong> The percentage of stretching f is directly proportional to height h and inversely proportional to diameter d:<\/p>\n <div class=\"formula-block\">f \u221d h\/d<br\/>C = d\u03c0 (circumference of core circle)<\/div>\n <p>The greater the cap diameter d, the easier the cap will slip out of its groove. A cap from relatively stiff plastic could be stripped if d is large, but would break during ejection if d is small.<\/p>\n <p style=\"margin-top:12px;\"><strong>Number of threads (pitches):<\/strong> The easiest way to strip is to specify only one thread (one pitch) so that the stripped thread will not slide into an adjoining groove but continue to slide uninterrupted off the core.<\/p>\n <p style=\"margin-top:12px;\">Also note that the finish of the groove has some influence on the ease of stripping, especially with materials requiring high polish for good ejection.<\/p>\n <\/div>\n <\/div>\n\n \n <div class=\"design-card diagram-card reveal\">\n <div class=\"diagram-img\">\n <img decoding=\"async\" src=\"https:\/\/myplasticmold.com\/wp-content\/uploads\/2020\/04\/screw_profile_ny6d8l.png\" alt=\"Screw profile stripping diagram \u2014 Figure 1\"\/>\n <\/div>\n <div class=\"diagram-text\">\n <h3>Figure 1 \u2014 Stripping Influences<\/h3>\n <p>Influences affecting the ability to strip a cap. Cross section of a product ejected using a stripper to push the plastic over the “hump” in the core.<\/p>\n <p>The greater the angle \u03b1 is, the greater the difficulty in stripping. <strong>Screw threads could have a 90\u00b0 angle if absolutely required<\/strong>, but that would definitely call for unscrewing \u2014 stripping would not be possible.<\/p>\n <p>Note that many screw threads \u2014 especially threads for closures \u2014 have standardized shapes which originally evolved from threads on glass bottles and jars. Such standards should be followed, and their large tolerances used to obtain maximum benefits for plastic threads.<\/p>\n <p>By considering all factors influencing stripping, the designer will succeed in creating a screw cap with the proper shape of thread cross section and a suitable h\/d ratio so that even a relatively stiff plastic can be readily stripped, without the need for an unscrewing <strong>cap mold<\/strong>.<\/p>\n <p style=\"margin-top:16px; font-family:'DM Mono',monospace; font-size:11px; color:var(--accent); letter-spacing:1px; text-transform:uppercase;\">In quantity applications, the core can also be removable from the mold and unscrewed from the product outside the mold \u2014 by hand or using fixtures.<\/p>\n <\/div>\n <\/div>\n\n <\/div>\n <\/div>\n<\/section>\n\n\n<footer>\n <p>\u00a9 Topworks Plastic Mold \u2014 All content, images, and backlinks preserved. Redesigned UI only.<\/p>\n<\/footer>\n\n<script>\n const io = new IntersectionObserver(entries => {\n entries.forEach(e => { if (e.isIntersecting) { e.target.classList.add('visible'); io.unobserve(e.target); } });\n }, { threshold: 0.08 });\n document.querySelectorAll('.reveal').forEach(el => io.observe(el));\n<\/script>\n<\/body>\n<\/html>","protected":false},"excerpt":{"rendered":"<p>China Flip Top Cap Mould | Topworks Topworks \u2014 China Flip TopCap MouldBump Lotion &Closure Mould China’s leading reliable plastic cap mould supplier with over 15 years of experience. One stop service \u2014 quick delivery, rich experience, top quality. 15+ Years Experience 7 Cap Mould Types 3 Steel Grades P20 Steel H13 Steel S136 Steel […]<\/p>\n","protected":false},"author":3,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-5177","page","type-page","status-publish","hentry"],"blocksy_meta":{"styles_descriptor":{"styles":{"desktop":"","tablet":"","mobile":""},"google_fonts":[],"version":6}},"_links":{"self":[{"href":"https:\/\/myplasticmold.com\/it\/wp-json\/wp\/v2\/pages\/5177","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/myplasticmold.com\/it\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/myplasticmold.com\/it\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/myplasticmold.com\/it\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/myplasticmold.com\/it\/wp-json\/wp\/v2\/comments?post=5177"}],"version-history":[{"count":2,"href":"https:\/\/myplasticmold.com\/it\/wp-json\/wp\/v2\/pages\/5177\/revisions"}],"predecessor-version":[{"id":12963,"href":"https:\/\/myplasticmold.com\/it\/wp-json\/wp\/v2\/pages\/5177\/revisions\/12963"}],"wp:attachment":[{"href":"https:\/\/myplasticmold.com\/it\/wp-json\/wp\/v2\/media?parent=5177"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}