High-Quality Automated Pet Sheet Production Factories & Exporters

Empowering Global Smart Manufacturing with Advanced Extrusion Lines, Closed-Loop Automation, and High-Performance Polymeric Custom Engineering.

Premium Production Systems

Explore our cutting-edge machinery designed for high capacity, optical clarity, and energy efficiency.

Custom PVC PE Water Stop Extrusion Line

Custom PVC PE Water Stop Extrusion Line Exporters, Companies

Designed for the manufacturing of various concrete joint water stop profiles. Robust design with precise temperature control.

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Famous PVB interlayer film extrusion line

Famous PVB interlayer film extrusion line Manufacturer, Products

Advanced PVB interlayer processing lines producing optical-grade film for automotive laminated safety glass and architectural applications.

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Famous Stone Paper Extrusion Line

Famous Stone Paper Extrusion Line Factory, Factories

Revolutionary green technology utilizing calcium carbonate and polymers to produce water-resistant eco-friendly stone paper.

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Best PLA Degradable Sheet Extrusion Line

Best PLA Degradable Sheet Extrusion Line Factory, Companies

State-of-the-art PLA compostable packaging sheet line. Integrates optimized drying and cooling mechanisms for sensitive bio-polymers.

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China PI Cast Film Extrusion Line

China PI Cast Film Extrusion Line Companies, Products

High-precision Polyimide cast film lines designed for electronic insulation, flexible printed circuits, and aerospace markets.

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High-Quality PP Honeycomb Panel Extrusion Line

High-Quality PP Honeycomb Panel Extrusion Line Factory, Exporters

Structural core solutions. Produces high-strength, lightweight PP honeycomb panels for logistics, automotive, and building industries.

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Best PCTG Decorative Film Extrusion Line

Best PCTG Decorative Film Extrusion Line Manufacturers, Factory

Specialized sheet co-extrusion technology for highly aesthetic interior finishes, eco-friendly furniture surfaces, and wear resistance.

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China PC Transparent Sheet Production Line

China PC Transparent Sheet Production Line Company, Products

Ultra-clear optical PC sheet systems. High thickness precision, minimal optical stress, and dust-free cooling integrations.

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Automated PET Sheet Extrusion: The Modern Polymer Processing Standard

In the highly competitive packaging and thermoforming sectors, the transition to automated PET (Polyethylene Terephthalate) sheet production represents a quantum leap in throughput, quality assurance, and unit economics. Modern production demands lines that operate under absolute control. Automated sheet extrusion mitigates the variables of polymer degradation, moisture contamination, and uneven melt distribution through complex sensory integration and feedback loops.

Traditional systems suffer from intrinsic viscosity (IV) drop during processing, especially when working with recycled PET (RPET) flakes. Modern automated lines integrate multi-stage desiccant drying systems or vent-de-gasification twin-screw extruders to manage moisture content down to parts-per-million (ppm) levels before it enters the high-shear zones. Our advanced extrusion design maximizes shear energy efficiency, preventing degradation of molecular chains and ensuring optimal physical properties of the finished PET sheet product.

Real-Time Melt Pump Control

Maintains ultra-stable volumetric discharge to the T-die, eliminating pressure surges and ensuring high thickness consistency across the entire width of the extruded PET sheet.

Closed-Loop Thickness Gauge

Non-contact online thickness scanner measures cross-direction profiles dynamically. Communicates back to the automatic T-die to thermal-bolt regulate flow variations within minutes.

Crystallization Control

Precise temperature management across three-roll calendar systems guarantees perfect crystalline structures, providing balance between high stiffness and thermoforming performance.

Macro Industry Solutions & Closed-Loop Circular Systems

Under global sustainability pressures (such as the EU Packaging and Packaging Waste Regulation), thermoformers must process varying fractions of post-consumer recycled PET (RPET). Our automated lines offer a comprehensive macro solution. Through advanced gravimetric dosing systems, virgin PET resin, RPET flakes, Masterbatches, and anti-static additives are metered dynamically. Automatic calibration accommodates varying density and bulk dimensions of flakes, preventing segregation during feed stages and preserving melt stability.

The Competitive Advantages of Chinese Production Factories

Unmatched supply chain integration, raw material optimization, and mechanical precision.

Why are leading international packaging firms sourcing their heavy machinery from Chinese manufacturers? The answer lies in the deep vertical integration of manufacturing clusters. In regions like Jiangsu and Zhejiang, factories enjoy instant access to specialized metallurgy, precision CNC centers, high-capacity electrical component suppliers, and world-class shipping hubs.

China GWELL Machinery Co., Ltd. leverages this ecosystem to construct heavy duty extrusion lines featuring optimized mechanical properties. By utilizing internal structural fabrication facilities and partnering with international brands (such as Siemens PLC, ABB frequency control drives, and high-performance screw treatments), GWELL balances investment costs with long-term reliability.

China Gwell Factory Base and Advanced Machinery Manufacturing

About China Gwell Machinery Co., Ltd.

A premier global supplier specializing in Film, Sheet, and Board Extrusion Lines.

China GWELL Machinery is a high-tech enterprise dedicating to the manufacture of plastic extrusion lines for Film, Sheet and Profile. Relying on the powerful technology and equipment of the group and an innovative spirit, GWELL commits to the development of high-tech products and the international market. “Expertise creates customers’ values” has always been the company’s operating philosophy.

3
Production Bases (Jiangsu, Suzhou, Zhejiang)
866,000
Total Construction Area (㎡)
500+
Dedicated Employees & Technical Teams
1000+
Annual Line Output Capacity

Strategic Engineering Pillars

Delivering high-capacity production systems supported by international compliance frameworks.

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Modern Techniques

Collaborate with prominent universities and research institutes to develop high-performance components, including energy-optimized barrels and low-shear screw configurations.

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Perfect Service

Providing end-to-end commissioning services, including raw material trial tests, remote diagnostic support, and on-site engineering setup globally.

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Strong Production Capacity

Three heavy-machinery bases guarantee prompt manufacturing times and allow for simultaneous testing of several high-capacity lines.

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Wide Global Market

Trusted by hundreds of thermoforming companies, optical-film converters, and renewable energy conglomerates across the Americas, Europe, and Asia.

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Professional Engineering Team

Over 100 dedicated R&D mechanical and controls engineers specializing in electrical architectures, raw material rheology modeling, and automated downstream processing.

High-Precision Machinery Classifications

Comprehensive extrusion portfolios for diverse industrial packaging, building, and solar applications.

Cast Film Extrusion Lines

ASA cast Film Extrusion

ASA Cast Film Extrusion Line

GWELL Machinery proudly presents the high-performance ASA cast film line, engineered for weather-resistant surface layers on resin tiles.

TPU Laminating film Extrusion

TPU Laminating Film Extrusion Line

Engineered for thermoplastic polyurethane coating. Ensures high tensile strength and adhesion to base fabrics.

TPU Cast Film Extrusion

TPU Cast Film Extrusion Line

Perfect molecular alignment controls for breathable, elastic, and high-clarity TPU films utilized in protective wear.

PVDF cast Film Extrusion

PVDF Cast Film Extrusion Line

Premium membrane production line for solar panels, offering UV, chemical resistance, and high electrical insulation.

PVB Wedge Film Extrusion

PVB Wedge Film Extrusion Line

Automated control loops manage the wedge angle of PVB film, a critical requirement for HUD (Head-Up Display) applications.

PVB interlayer film extrusion

PVB Interlayer Film Extrusion Line

Produces consistent architectural and automotive-grade interlayer film with high impact absorption properties.

PVA Water Soluble Film Extrusion

PVA Water Soluble Film Extrusion Line

Engineered for clean room setups. Produces precise gauges of PVA film used for unit-dose packaging and detergents.

PI Cast Film Extrusion Line

PI Cast Film Extrusion Line

Advanced high-temperature thermal control system processing polyimide film for microelectronic substrates.

PEVA Cast Film Extrusion

PEVA Cast Film Extrusion Line

Flexible raw material configurations produce eco-friendly, non-toxic alternatives to traditional PVC applications.

PETG Decorative Film Extrusion

PETG Decorative Film Extrusion Line

Provides high optical clarity and surface hardness for laminated interior design sheet layouts.

Board Extrusion Lines

PVC SPC WPC board extrusion

PVC SPC WPC Board Extrusion Line

Integrated parallel twin-screw extruder design processing high mineral-filled formulations for SPC vinyl flooring.

PP Building Construction

PP Building Construction Board Line

Engineered for hollow structure formwork, offering long service life and high recyclability rates in concrete casting.

PEEK PFA PVDF Board Extrusion

PEEK PFA PVDF Board Extrusion Line

Specialized high-temperature heating zones and corrosion-resistant screws processing fluoroplastics and super-engineering plastics.

PE and HDPE Board Extrusion

PE and HDPE Board Extrusion Line

Heavy duty single-screw extruder with grooved feed barrel, offering stable throughput for thick geomembranes and industrial liners.

PC Transparent Sheet Production

PC PMMA Board Extrusion Line

Equipped with clean rooms and high mirror polish calendar rolls to manufacture optical grade flat sheets.

GPPS Diffuser plate Extrusion

GPPS Diffuser Plate Machine

Optimized co-extrusion technology designed for TV panels, light guides, and flat panel illumination.

Flexible graphite composite

Flexible Graphite Composite Extrusion

Complex material processing architecture ensuring homogenous mixing and stable lamination profiles.

ABS icebox Board Extrusion

ABS Icebox Board Extrusion Line

Specially formulated screw to process ABS sheet layouts suitable for high-draw thermoformed refrigerator lining.

ABS HIPS GPPS Board Extrusion

ABS HIPS GPPS Board Extrusion Line

Versatile line configured for varying thermoforming grades, offering prompt roll adjustments and uniform melt distribution.

Sheet Extrusion Lines

PCTG Sheet Extrusion Line

PCTG Sheet Extrusion Line

Processes high-performance copolyesters. Replaces polycarbonate where food contact and chemical resistance are critical.

TPO & TPE Sheet Extrusion

TPO & TPE Sheet Extrusion Line

Co-extrusion configurations for car mats and dashboard skins, offering high impact resilience and haptic qualities.

Transparent Hard Plastic

Transparent Hard Plastic Sheet Line

Robust machinery configured to extrude highly polished clear sheets without thermal distortion or air bubble entrapment.

PP Two-Tone Sheet Extrusion

PP Two-Tone Sheet Extrusion Line

Dual-extruder feedblock system creating stationery-grade sheets with contrasting color layers on opposite surfaces.

PP Blister Sheet Extrusion

PP Blister Sheet Extrusion Line

Highly efficient co-extrusion technology designed for clean food containment, micro-ventilation packaging, and cups.

PLA Degradable Sheet Extrusion

PLA Degradable Sheet Extrusion Line

Precision temperature controls configured for compostable PLA structures. Prevents polymer hydrolytic breakdown.

PET Food Packaging Sheet

PET Food Packaging Sheet Extrusion

Food safety compliant. Direct extrusion systems engineered to processes up to 100% recycled bottle flakes.

PCL medical sheet production

PCL Medical Sheet Production Line

High clean-room standard engineering for biocompatible medical grade splints and orthopedic bracing sheets.

PC PMMA Optic Sheet Extrusion

PC PMMA Optic Sheet Extrusion Line

Advanced high-precision line designed to prevent contamination, creating defect-free display panels.

PC flame retardant sheet

PC Flame Retardant Sheet Extrusion

Processes highly viscous polycarbonate formulations integrated with flame retardant chemical feeds.

Solar Extrusion Lines

SGP Solar Film Extrusion

SGP Solar Film Extrusion Line

Extrudes high-strength structural interlayers, ensuring structural safety in architectural glass facades.

PVE Cast Film Extrusion

PVE Cast Film Extrusion Line

A premier solution for solar cell encapsulation, offering high cross-linking speed and thermal stability.

Polyurethane Solar Frame

Polyurethane Solar Frame Extrusion

Alternative to aluminum frames. Provides high weatherability and lower carbon footprint.

Hydrogen Energy PPS

Hydrogen Energy PPS Separator Line

Processes polyphenylene sulfide membranes used in water electrolyzers for green hydrogen generation.

EVA POE Solar Film Extrusion

EVA POE Solar Film Extrusion Line

State-of-the-art cooling roll geometry prevents material shrinkage and keeps shrink rates below 2%.

EVA POE encapsulation film

EVA POE Encapsulation Film Line

High-speed winding, non-stick surface engineering, and dynamic tension management systems.

EPE solar cast film extrusion

EPE Solar Cast Film Extrusion Line

Produces co-extruded EVA/POE/EVA structural films to prevent PID (Potential Induced Degradation) in modules.

BIPV PVB photovoltaic film

BIPV PVB Photovoltaic Film Line

Specialized for Building Integrated Photovoltaics, guaranteeing long term adhesion and light transmission safety.

Technological Breakthroughs in Automated PET/PLA Extrusion

In traditional plastic processing, drying PET raw materials is highly energy-intensive. Standard twin-screw technologies offered by GWELL integrate multi-point vacuum degassing systems, achieving high moisture extraction without pre-crystallization dryers. This engineering breakthrough reduces electricity consumption by up to 30% to 35% compared to standard configurations, significantly decreasing carbon footprints per ton of extruded PET sheet.

Furthermore, structural developments in three-roll calendars play a critical role in final sheet qualities. By optimizing fluid cooling pathways within the rollers, we achieve surface temperature tolerances within ±1°C. This prevents internal stress, micro-cracks, and warping, ensuring that final rolls are flat and easy to thermoform into cups, trays, and medical packaging structures.

Global Procurement Strategy & Factory Sourcing Requirements

Procurement directors must look beyond price and analyze long term maintenance schedules, PLC interface integrations, and global technical support networks. GWELL integrates Siemens TIA Portal industrial control software, allowing engineers in the Americas or Europe to monitor machine status, run diagnostics, and modify calibration profiles remotely. This minimizes down-time during complex line integrations.

Latest Industrial Insights

Stay updated with Gwell's engineering achievements, global expos, and technology releases.

CHINA GWELL to Showcase Cutting Edge Solutions
Apr 14, 2026

CHINA GWELL to Showcase Cutting Edge Systems at Chinaplas

Discover GWELL's latest high-capacity, low-energy sheet extrusion innovations at the leading global trade expo.

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POE Leather Production Line
Feb 11, 2026

GWELL Launches POE Leather Production Line

Our new eco-friendly, non-toxic POE composite leather line is configured for high-end automotive interior upgrades.

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Chinese pvb wedge film Production
Jun 25, 2025

Chinese PVB Wedge Film Production Technical Release

High-precision thickness calculations and wedge profile controls meet strict automotive laminated glass standards.

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PETG Decorative Film Extrusion
Mar 26, 2025

High Gloss PETG Decorative Film Extrusion Innovations

Developing surface hardness and chemical resistance without compromising the flexibility of PETG materials.

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Introducing the GWELL PP Honeycomb
Jan 21, 2025

Introducing the GWELL PP Honeycomb Panel Extrusion Line

Structural sandwich layouts configured with high-output co-extrusion technology for logistics panels.

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About our customes of PLA/PET
Jan 21, 2025

Strategic Customer Success for PLA/PET Extrusion Lines

Reviewing operational feedback from our long-term regional partners utilizing GWELL machinery.

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Certified Industrial Standards

Our design, safety systems, and management comply with strict global verification models.

Global Enterprise Trust

We collaborate with top-tier material manufacturers and system integrators worldwide.

Technical Q&A: PET Sheet Extrusion & Sourcing

Detailed engineering answers to address procurement specifications and operational requirements.

How does China GWELL control Intrinsic Viscosity (IV) drop during automated PET sheet processing?

IV drop occurs due to thermal degradation and hydrolytic chain scission in the presence of moisture. GWELL machinery addresses this by utilizing multi-vented, high-vacuum co-rotating twin-screw extruders. The systems evacuate volatile components and maintain water content levels under critical values, keeping the absolute IV drop below 0.03 dl/g without requiring expensive pre-drying.

What thickness uniformity tolerances can be achieved on automated PET extrusion lines?

By combining an online automatic thickness measurement scanner (beta or X-ray) with a closed-loop automatic T-die featuring thermal bolts, GWELL machines maintain sheet thickness variations across the web within ±1% to 1.5% for standard thermoforming thicknesses.

Can the automated PET sheet extrusion line process 100% recycled PET (RPET) flakes?

Yes. Our co-rotating twin-screw design is engineered to process raw RPET bottle flakes. High-torque gearboxes and multi-point vacuum vents handle the chemical contaminants and variations in bulk density. Additionally, custom screen changers are integrated to filter fine particles down to 50 microns.

What is the typical energy consumption profile of a GWELL high-capacity PET line?

Thanks to energy-optimized induction heater bands, high-efficiency synchronous motors, and dry-free degassing extruders, energy consumption ranges between 0.28 to 0.35 kWh per kg of extruded plastic sheet, representing up to 30% savings compared to legacy single-screw and crystallizer designs.

How does the automated control system handle changeovers in sheet width or thickness?

The integrated PLC system stores pre-configured recipe profiles. During thickness transitions, the motor speeds, melt pump outputs, calendar roller gaps, and T-die clearances adjust automatically, reducing transition scrap and maximizing production time.

Advanced Structural & High-Performance Extrusion Systems

Continuous innovation in complex multi-layer configurations and specialized materials.

Custom GPPS HIPS PMMA Sheet Extrusion Line

Custom GPPS HIPS PMMA Sheet Extrusion Line Factories, Exporters

Designed for multi-layer sanitaryware sheet structures. High rigidity, surface hardness, and thermoforming depth.

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High-Quality ETFE PFA PEEK PVDF Film Extrusion Line

High-Quality ETFE PFA PEEK PVDF Film Extrusion Line Factories, Company

Processes advanced fluoropolymers and high-temperature plastics for high-reliability industrial applications.

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High-Quality PE Geo-membrane Waterproof Sheet Extrusion Line

High-Quality PE Geo-membrane Waterproof Sheet Extrusion Line Factory, Company

Outputs extra-wide geomembrane layouts, ensuring high water tightness for landfill construction and civil projects.

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Best PP Two-Tone Sheet Extrusion Line

Best PP Two-Tone Sheet Extrusion Line Exporters, Companies

Offers high-speed co-extrusion feed systems. Ideal for files, office stationary, and decorative plastic packaging.

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China PCTG Sheet Extrusion Line

China PCTG Sheet Extrusion Line Manufacturers, Products

Produces BPA-free, high-toughness sheets. Highly transparent, impact-resistant, and suitable for food contact.

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China PVB Head-up display Film Extrusion Line

China PVB Head-up display Film Extrusion Line Factory, Exporter

High-precision automotive wedge-film line. Preserves optical density gradients, avoiding HUD ghosting images.

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High-Quality Hydrogen Energy PPS Separator Extrusion Line

High-Quality Hydrogen Energy PPS Separator Extrusion Line Manufacturer

Designed for modern green hydrogen alkaline water electrolyzer stack membrane requirements.

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High-Quality TPU TPE Leather composite Extruder Line

High-Quality TPU TPE Leather composite Extruder Line Manufacturers

Combines thermoplastic elastomers with fabrics, creating synthetic leathers for automotive and apparel markets.

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Request Detailed Custom Extrusion Specifications

GWELL's technical R&D team can customize screw configurations, venting systems, and output profiles to meet your specific raw material and capacity targets.

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