Technology for Plastic Extrusion: Film, Sheet, Blow-Molding-JWELL

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The"Heart" of The Extruder-The Screw

1

The ScrewMaterial

Made of high-quality alloy tool steel, high-quality alloy nitrided steel, high-performance stainless steel special high-temperature alloy steel, which can be selected according to different requirements.
2

Surface Treatment Process

Nitriding, electroplating, medium and high frequency quenching, vacuum quenching, spray welding double alloy.
3

Technical parameters

Diameter can reach 25mm-350mm; screw bottom diameter tolerance can be accurate to ±0.08mm; screw and barrel can be customized according to customer needs.

Different Material Effect Screw Design

Plastic Type	Material Characteristics	Common Screw Design
PE(Polyethylene)	Good flow, thermally stable	Gradual compression screw
PP(Polypropylene)	Stable, slightly higher melt viscosity	Standard 3-zone screw
PVC(Rigid/Soft)	Heat-sensitive, decomposes easily	Low shear barrier/mixing screw
ABS	Shear-sensitive, high viscosity	Standard screw with moderate shear
PS(Polystyrene)	Good flow, brittle	Standard or mixing screw
PC(Polycarbonate)	High viscosity, needs better mixing	Extended L/D screw (≥28)
PMMA(Acrylic)	Brittle, transparency sensitive	Low shear screw design
PET	Hygroscopic, needs drying	Strong mixing section, L/D ≥ 30
TPU/TPE	Elastomeric, prone to carbonization	Low shear, low temp screw Filled Plastics
Filled Plastics	Glass fiber, CaCO₃, talc, etc.	High wear-resistant alloy screw,reinforced feeding/mixing zones
Engineering Blends	Engineering Blends PC+ABS, PA+GF, etc.	Multi-stage mixing screw, wear-resistant

Key Parameters in Screw Selection

Many customers considering to low cost, want to use one machine to make many differernt materials, we totally understand, but some materials can, some can not. When choosing machine, we need to depend on the material nature.

Compression Ratio (CR)

For shear-sensitive materials: lower CR. For high viscosity or crystalline materials: moderate to high CR
L/D Ratio (Length-to-Diameter)

General plastics: L/D = 25–28. Crystalline, filled, or blended plastics: L/D ≥ 30.
Screw Material

General use: Nitrided 38CrMoAl. Abrasive fillers: Bimetallic or hardened steel.

Precision Rolls, Quality Delivers

Heat reatment workshop that can proces 14+meterlong workpieces, professional electrochromium plating workshop, ginding machine and boring equipment that can process 14meters. We have profesionalarge-scale dynamic balancing caibration equipment,which enables the roler to have extremely high speed, precise dymamic balancing accuragy, fasiand balanced heat exchange efficiency, and ensure stability in diaphragm production.

1

Material

45# steel, Q345D, high quality SUS304, SUS316L, etc.
2

SurfaceTreatment

Plating, coating, heat treatment, electroplating hard chrome treatment, polishing, spraying.
3

Technical Parameters

Roll face width: Up to 14 meters. Roll weight: Up to 30T. Dynamic balance grade: G2.5. Roll face profiling: Arc crown or tapered crown. Roll face runout: ≤ 0.05mm. Concentricity:≤ 0.05mm.

Precision Dies, Perfect Forms

We have various CNC processing equipment, advanced Japanese Okamoto grinders, 24-hour constant temperature and humidity workshops, heat treatment workshops, and electroplating workshops, so that the entire processing process is under our own quality control.

1

Material

High quality mold steel and imported stainless steel
2

Surface Treament Process

electroplating industrial chromium or nickel treatment (commonly used)lip laser quenching or tungsten carbidedeep cold hardening, etc.
3

Complete Testing Equipment

three-coordinate testing equipment, metal spectrometers. ultrasonic flaw detectors. ultrasonic hardness testers. coating thickness gauges, etc.

Core competitiveness of Fiber Spinning Machine

Modular customization and small-scale test lines

Our "LEGO-style" equipment combinations uniquely provide a complete modular solution ranging from laboratory scale to production lines , suitable for research institutes and new material companies for small-batch pilot production.

Adaptability of recycling fiber equipment

A high-impurity melt filtration system that can process recycled PET bottle flakes, reducing the production costs of regenerated fibers.

Independent research, development, design, and production

Made of high-quality alloy tool steel, high-quality alloy nitrided steel, high-performance stainless steel special high-temperature alloy steel, which can be selected according to different requirements.

The lifespan and precision of core components reach international standards

The lifespan of key parts such as screws and barrel approaching the level of international brands like Oerlikon Barmag, significantly reducing customer downtime and replacement costs.

Blow Molding Technology

Jwell’s strategic acquisitions and international presence ensure seamless service for clients worldwide.

01

Fully Automated Intelligent Production

JWZ-BM Series Blow Molding Machine integrates post-cooling systems, automatic leak detection, and in-mold labeling capabilities. It supports container production ranging from 50ml to 5000L, significantly shortening molding cycles and enhancing production efficiency.
02

Patent-Breakthrough Technology

The "Multi-Functional Composite Molding Machine",enables multi-layer material compounding and pressing. This innovation is widely applied in high-specification sectors such as automotive and construction industries.
03

Eco-Friendly Design

Featuring an integrated waste recycling system and energy-efficient cooling technology, the equipment empowers clients to reduce energy consumption and carbon emissions, aligning with global sustainable development trends.

Provide customers with one-stop customized services.

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CONTACT US

NO.18, Dong'an Road, Chengxiang Industrial Zone, Taicang, Suzhou city, China
WhatsApp: +86-13601907989
Tel: +86-0512-53377158
Phone: +86-13601907989
Email: saldf@jwell.cn

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