#extrusion

The 1250mm fully automatic two/three-layer stretch film machine delivers efficient, high-speed production with advanced automation, intelligent monitoring, and stable performance. It ensures superior film quality, reduced labor costs, and wide application across industries, helping manufacturers boost efficiency and competitiveness.

Key Features & Advantages of 1250MM Fully Automatic High Speed Two/Three-layer Stretch Film Machinery

Our 1250mm fully automatic high-speed two/three-layer stretch film machine is designed for efficiency, precision, and versatility.

1. High Productivity

Fully automated design and high-speed operation enable large-scale, cost-effective production.

2. Advanced Co-Extrusion

Two/three-layer extrusion ensures superior strength, durability, and barrier properties.

3. Premium Film Quality

Produces stretch films with excellent transparency, gloss, and uniform thickness.

4. Intelligent Operation

Smart control, one-button start, and real-time monitoring ensure stable, continuous production.

5. Wide Applicability

Suitable for food, medicine, chemicals, electronics, and logistics packaging.

This machine offers a complete solution for modern packaging industries.

Rubber extrusion distinguishes itself from molded rubber manufacturing by its unique process. Unlike molding, rubber extrusion involves forcing rubber through a die with the desired cross-section under pressure. Typically, this process uses soft, unvulcanized rubber compounds fed into an extruder. The extrusion process leaves the rubber in a pliable state, necessitating vulcanization (hardening) to create durable, usable products.

The rubber extrusion process

Rubber extrusion occurs over multiple stages designed to produce precision rubber profiles. Here’s a step-by-step breakdown.

Feeding the Rubber Compound

The process starts with feeding a rubber compound into an extruder via a feed hopper. The hopper transfers the material to the flutes of a revolving screw that carries the compound forward.

Moving Toward the Die

The material progresses along the screw, experiencing increasing pressure and temperature as it approaches the die.

Extrusion Through the Die

Upon reaching the die, the built-up pressure pushes the rubber through specific openings in the die. Depending on the rubber compound's composition and hardness, the extruded material may swell to varying degrees. This swelling often necessitates tolerances in the final product's cross-section to meet precise specifications.

Vulcanization and Dimensional Changes

During vulcanization, the rubber undergoes swelling or shrinkage in both its cross-section and length, influenced by the type of rubber compound used. Following vulcanization, extruded rubber may experience dimensional variations, particularly a reduction in the length’s center compared to its ends.

The role of extrusion dies in rubber manufacturing

An extrusion die represents a critical component in creating custom rubber products. Each die is meticulously crafted by cutting an opening into a blank steel piece. The opening aligns with the desired shape of the finished rubber product's cross-section.

When the rubber material is forced through the die by the extruder's revolving screw, some rubber compounds tend to swell. This potential increase in dimensions is considered when designing the die to ensure the final extruded rubber product meets required tolerances. The precise design of the die ensures consistently accurate shapes and dimensions.

The advantages of rubber extrusion

Rubber extrusion offers numerous benefits, making it an ideal manufacturing process for businesses in diverse industries:

Variety of Shapes: Easily create intricate and unique profiles.

Efficiency: Achieve high-quality results at a cost-effective rate.

Flexibility: Lightweight and adaptable for various applications.

Reduced Waste: Efficient use of materials minimizes production waste.

Common extruded rubber products

At Hebei Sunrise Rubber and Plastic Technology Co., Ltd., we produce a wide range of extruded rubber products tailored to meet diverse industrial needs. Here are some examples:

Connectors

Tubing

Mandrel-formed hoses

Door, cabinet, and window seals

Vibration reducers

Gaskets and spliced gaskets

Square tubing for pressure switches

Window seals for mass transit

We work with various rubber compounds like EPDM and neoprene, producing dense or sponge rubber solutions capable of withstanding different temperature, weather, and technical requirements.

Why choose Hebei Sunrise Rubber and Plastic Technology for rubber extrusion?

At Hebei Sunrise Rubber and Plastic Technology Co., Ltd., we pride ourselves on delivering custom rubber solutions that prioritize your satisfaction. Whether you require intricate designs or large-scale production, we streamline the process for you – from design to delivery.

Explore how our tailored rubber extrusion services can support your business. Contact us today to discuss your unique requirements!  

R&D Core: Offline/Online Capillary Rheometers, Torque Rheometers. Accurately simulate material flow behavior under different shear rates and temperatures, providing core data support for slurry formulation and PV film processing (cross-linking degree control).

Key to Process Scale-Up: Small Precision Cast Film Lines, Film Biaxial Stretchers / Biaxial Stretching Pilot Lines. Perfectly replicate the precision casting and biaxial stretching processes for battery separator and backsheet films in the lab, significantly shortening the production cycle from formulation to mass production.

Quality Control Tools: Online Melt Flow Index Testers, Filter Pressure Value Testers. Monitor melt flow rate (MFR) and screen pack clogging on production lines in real-time, ensuring stability and consistency of product performance for PV films and more.

Purity Assurance: Resin Gel Particle Continuous Analyzer. Precisely detects "fish eyes" and impurity gel particles in materials, the first critical step in ensuring surface smoothness and safety of medical catheters and implantable devices.

Precision Extrusion Molding: Small Precision Tubing/Wire Extrusion Lines. Provides a platform for process exploration with small batches and multiple runs for R&D of various precision medical catheters and surgical sutures, minimizing material consumption and maximizing efficiency.

Multi-Layer Coextrusion Technology: Small Precision Multi-Layer Coextrusion Cast Film/Blown Film Lines. Develops functional medical composite films, such as drug-release membranes, antibacterial packaging films, enabling precise layer coextrusion.

Core of High-Performance Packaging Film R&D:

Biaxial Stretching Instruments (Lab-Type) & Biaxial Stretching Pilot Lines (Pilot-Type): These are decisive tools for developing next-generation packaging films. By precisely controlling machine direction (MD) and transverse direction (TD) stretch ratios, stretching temperature, speed, and heat-setting processes, they enable systematic study of how stretching parameters affect film crystallinity, orientation, mechanical properties (strength, toughness), barrier performance (oxygen, water vapor), optical properties (haze, gloss), and heat-sealability. This platform is essential for overcoming technical barriers in high-barrier, ultra-thin, and high-strength packaging materials.

Multi-Layer Structure Innovation Engine:

Small Precision Multi-Layer Coextrusion Casting Lines: As the foundational step for biaxial stretching, these systems produce pre-made sheets with uniform thickness and stable interlayer structures, ensuring successful subsequent stretching. With minimal material consumption, they enable trials of 3-5 or even 7-layer composite structures (e.g., PP/adhesive/EVOH), making them ideal for developing ultra-high barrier packaging and fresh-keeping films.

Biodegradable Materials Expertise:

Capillary Rheometers and Torque Rheometers: These instruments analyze the rheological properties and processing stability of bio-based/degradable materials like PLA and PBAT, optimizing critical metrics such as heat resistance and toughness. They provide the theoretical foundation and processing windows needed for successful biaxial stretching of these materials.

Process Optimization & Sample Preparation:

Desktop Precision Calenders: Used for developing sheets and packaging materials, these systems help explore how process parameters impact product surface gloss and thickness uniformity.

POTOP not only offers multi-layer coextrusion technology to help you rapidly explore new packaging structures at minimal cost but also, with our core biaxial stretching equipment series, unlocks the full potential of high-performance packaging material R&D. Whether pursuing ultra-high barrier fresh-keeping films, metalized substrate alternatives, or lightweight yet strong sustainable packaging, POTOP’s lab stretching solutions enable complete process exploration and optimization in the laboratory—long before heavy production line investments. This drastically reduces innovation risks and costs. Choosing POTOP means gaining end-to-end R&D capability, from resin to final high-performance packaging film.

Specialized in electromagnetic/optical film R&D – Aligned with green energy trends.

INDUSTRIES USING POTOP SOLUTIONS

New Energy & Photovoltaics

Rapid iteration of new material development imposes extremely high requirements on the rheological properties, crystallization characteristics, weatherability, and extreme processing performance of materials like battery separators, photovoltaic (PV) film (EVA/POE), and electrode binders. POTOP Instruments: Powering New Energy Materials with 'Core' Kinetic Energy. From lab data to mass production processes, we help you overcome core technical challenges in separator strength, film translucency, and durability.

Medical & High-End Packaging

Stringent requirements for the purity, cleanliness, processing precision, and regulatory compliance of biocompatible polymer materials (e.g., PLA, PCL, medical silicone, catheter compounds). Ultimate Purity, Precision Molding. POTOP equipment safeguards the purity and precision processing performance of medical-grade materials, ensuring every innovation meets the solemn trust of life.

Advanced Materials & Scientific Research

Focus on high-performance composites (e.g., PEEK, PEKK, specialty engineering plastics) and their composite processes, requiring equipment capable of high temperatures, high pressure, and simulating special processing environments. The Journey is to the Stars, Starting in the Precision Lab. POTOP high-temperature, high-pressure equipment provides performance data and molding solutions for cutting-edge aerospace composites under extreme operating conditions.

Microelectronics Industry

Extreme demands on dielectric properties, thermal conductivity, dimensional stability, and micro/nano-scale processing precision for materials like 5G materials, chip encapsulants, high-frequency substrates, and conductive/thermal management composites. Targeting Electronics Frontiers, Where Precision Defines Performance. POTOP helps you master the "rheological" mysteries of advanced electronic materials, achieving precise control from molecular structure to microscopic morphology, building core competitiveness.

Petrochemical Industry

Vast product variety makes formulation optimization, cost control, process scale-up, and stability perpetual themes. From a single pellet to a sheet of film, a filament, a tube... POTOP provides full-chain support for modified plastics' R&D-Testing-Process Scale-Up, making your every innovation faster, more stable, and more economical.

Food & Packaging Industry

Pursuit of high barrier, biodegradability, lightweighting, high strength, high clarity, etc., necessitates R&D on high-performance films based on biaxial stretching (e.g., BOPP, BOPET, BOPA) and frequent development of new multi-layer coextrusion materials and structures. R&D requires rapid iteration and minimal consumption of expensive raw materials.

Universities & Research Institutes

Focus on cutting-edge scientific inquiry, emphasizing principle validation and mechanism research. Equipment must combine intuitive teaching demonstration with scientific precision, while offering high modular flexibility to support diverse innovative projects. Cost-effectiveness is essential to fit laboratory budgets. POTOP Laboratory Solutions: Rooted in Frontline Research, Dedicated to Excellence in Talent Development.

POTOP'S FILM STRETCHING & EXTRUSION SOLUTIONS ADVANTAGES

Diverse Application Expertise

POTOP's solutions cater to crucial emerging sectors like new energy (battery/solar), optoelectronics (OLED), biodegradable materials, and environmental/acoustic applications. This demonstrates a broad understanding of cutting-edge film technology demands across various industries.

Proven Track Record & Extensive Experience

With over 886 units delivered since 2011, including 383 functional film equipment sets, POTOP boasts significant experience in manufacturing and delivering reliable solutions. This extensive track record builds trust and assures consistent performance.

Strong R&D & Technological Innovation

POTOP's commitment to innovation is evident through dozens of major technological developments, 66 patents, and contributions to national/group standards. This guarantees access to advanced, up-to-date film stretching and extrusion technology.

Comprehensive Quality Control & Certification

Adherence to a complete ISO management system and ISO9001 certification ensures high-quality manufacturing standards. This rigorous quality control minimizes risks and guarantees reliable equipment performance for demanding applications.

Competitive Pricing & Direct Sales Strategy

Core technology development, independent manufacturing, and a direct sales approach allow POTOP to offer competitive pricing. This reduces costs and enables more professional service by shortening the sales channel.

Customer-Centric Service & Customization

POTOP prioritizes customer satisfaction with customized services, pre-sales testing, on-site support, and a 48-hour response after-sales service. Their "24-hour supplier" commitment ensures smooth operation and optimal results for customers. Their Slogan "100% high satisfaction, turning plastic into gold" highlights this.