{"id":7866,"date":"2025-04-25T09:00:47","date_gmt":"2025-04-25T09:00:47","guid":{"rendered":"https:\/\/tz-machinery.com\/?p=7866"},"modified":"2025-04-26T00:36:05","modified_gmt":"2025-04-26T00:36:05","slug":"what-is-the-process-of-pet-sheet-extrusion","status":"publish","type":"post","link":"https:\/\/tz-machinery.com\/vi\/what-is-the-process-of-pet-sheet-extrusion\/","title":{"rendered":"What Is The Process Of High-quality PET Sheet Extrusion?"},"content":{"rendered":"
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The PET sheet extrusion process in TZ-machinery utilizes a specialized design that eliminates the need for traditional crystallization and drying steps, while incorporating advanced features for efficiency and automation. Here’s a detailed breakdown of your process:<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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Raw Material Feeding:<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Virgin PET flakes\/chips are directly fed into the extruder hopper without pre-crystallization or drying, thanks to your system’s unique design.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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Melting & Plasticizing:<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Planetary Gear Extruder System:<\/strong>
– This PET Sheet Production line<\/a> employs a ‘multi-screw planetary gear design’ (surrounding a central main screw<\/strong><\/span>) for superior melting and mixing.
– This design enhances heat transfer, reduces shear stress, and ensures uniform melt consistency.
– Vacuum degassing: Volatiles and moisture are removed via vacuum vents during extrusion, eliminating the need for pre-drying and pre-crystallizing<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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Filtration & Metering:<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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– Melt passes through a ‘screen changer’ to filter impurities.
– A ‘gear pump’ maintains precise pressure and flow rate for consistent thickness.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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Sheet Formation:<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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– Melt is extruded through a ‘Jctimes extrusion die’ to form a continuous sheet.
– Roller Calendering: The molten PET is cooled and shaped by a precision 3-roll stack (vertical or horizontal) to achieve the desired thickness and surface finish.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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Cooling & Surface Treatment:<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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– Chill Rolls: The sheet is cooled gradually to ensure dimensional stability.
– Oil Coating: A thin layer of oil is applied to improve surface smoothness and prevent static.
– Heating Oven (Optional): Some lines may include an oven for annealing or further thermal treatment to enhance mechanical properties.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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Automated Winding:<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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– Fully Automatic Winders:
– Auto-Length Counting: The system measures and cuts sheets at preset lengths.
– Auto-Cutting & Splicing: Seamless transition between rolls without stopping production.
– Core Loading\/Ejection: Automated roll handling fo<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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TZ-machinery Planetary Multi-screw PET sheet production Line:<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Model Of Planetary Muilt-screw PET sheet Extrusion Machine:<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Model<\/td>Applicable Material<\/td>Screw Combination<\/td>Screw Size<\/td>Sheet Thickness (mm)<\/td>Sheet Width<\/td>Max. Extrusion Volume (kg\/h)<\/td><\/tr>
TZ-120X<\/td>PET<\/td>Single screw & Planetary multi-scrwe<\/td>\u03a6120<\/td>0.15-1.6<\/td>\u2266800<\/td>400-600<\/td><\/tr>
TZ-130X<\/td>PET<\/td>\u03a6130<\/td>0.15-1.6<\/td>\u2266800<\/td>600-900<\/td><\/tr>
TZ-150X<\/td>PET<\/td>\u03a6150<\/td>0.15-1.6<\/td>\u2266800<\/td>1000-1500<\/td><\/tr><\/tbody><\/table>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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\n\t\t\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\tContact TZ machinery for planetary screw Pet sheet line solution<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>","protected":false},"excerpt":{"rendered":"

The PET sheet extrusion process in TZ-machinery utilizes a specialized design that eliminates the need for traditional crystallization and drying steps, while incorporating advanced features for efficiency and automation<\/p>","protected":false},"author":1,"featured_media":7867,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"_yoast_wpseo_slug":"","footnotes":"","_yoast_wpseo_focuskw":"What is the process of PET sheet extrusion","_yoast_wpseo_metadesc":"The PET sheet extrusion process in TZ-machinery utilizes a specialized design that eliminates the need for crystallization and drying steps."},"categories":[68],"tags":[72],"class_list":["post-7866","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-tz-machinery-knowledge","tag-knowledge-of-pet-sheet-extruder-machine"],"yoast_head":"\nWhat Is The Process Of High-quality PET Sheet Extrusion? 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