Plastic Film Winder Component | Specifications & Selection

Product Specifications

Technical details and manufacturing context for Winder

Definition

The winder is a critical component of a plastic film blowing machine that collects and winds the continuous plastic film produced by the extrusion and blowing process onto cores or shafts to form finished rolls. It ensures proper tension control, alignment, and uniform winding for downstream handling and storage. The winder typically consists of motor-driven rollers or shafts, a tension control system, guiding systems, and may include automatic cut-and-transfer mechanisms for continuous operation during roll changes. It is available in configurations for roll widths from 500 to 2000 mm, maximum roll diameters from 600 to 1200 mm, and winding speeds from 50 to 300 m/min. Tension accuracy is maintained within ±1.5%, and roll hardness can be set between 50 and 70 Shore A. The motor power ranges from 5 to 30 kW, and the supply voltage is 380–480 V AC (IEC 60038). The operating temperature range is 10–45 °C, with non-condensing humidity from 20% to 80% RH. The ingress protection rating is IP54–IP65 (IEC 60529). The frame is typically made of carbon steel (Q235 per GB/T 700), with stainless steel optional for corrosive environments. The weight varies from 1500 to 5000 kg depending on width and options. These values are reference ranges and must be verified with the legal manufacturer or supplier for the specific model and application. The winder is designed to integrate with plastic film blowing lines, and its selection depends on film width, line speed, and roll size requirements. Proper installation and maintenance are essential for reliable operation.

Working Principle

The winder operates by using motor-driven rollers or shafts to pull the plastic film from the collapsing frame and wind it onto a core. It typically incorporates tension control systems (pneumatic, magnetic, or electronic) to maintain consistent film tension, guiding systems to ensure edge alignment, and may include automatic cut-and-transfer mechanisms for continuous operation during roll changes. The tension control system adjusts the torque or speed of the winding shaft to compensate for changes in roll diameter, ensuring uniform winding. The guiding system uses sensors to detect film edge position and adjusts the traverse or steering rollers to keep the roll straight. The cut-and-transfer mechanism automatically cuts the film and transfers it to a new core when a roll is complete, minimizing downtime. The winder's control system interfaces with the extrusion line's PLC to synchronize speed and tension. Proper setup of tension, alignment, and speed is critical to avoid film wrinkles, telescoping, or uneven roll hardness.

Common Materials

Carbon steel, Stainless steel, Aluminum alloy

Technical Parameters

Parameter	Typical range	Notes & selection driver
Roll Width	500–2000 mm	Determines machine size and compatibility with production line.
Max Roll Diameter	600–1200 mm	Affects handling and downstream unwinding equipment.
Winding Speed	50–300 m/min	Must match extrusion line output.
Tension Accuracy	±1.5 %	Critical for film quality and roll hardness.
Roll Hardness	50–70 Shore A	Measured on roll surface; affects storage and conversion.
Motor Power	5–30 kW	Depends on film width and tension range.
Supply Voltage	380–480 V AC	Three-phase; other voltages on request.IEC 60038
Operating Temperature	10–45 °C	Outside this range, performance may degrade.
Humidity Range	20–80 % RH	Non-condensing; high humidity affects film static.
Ingress Protection	IP54–IP65	Higher rating for dusty or wet environments.IEC 60529
Frame Material	Q235	Carbon steel; stainless steel optional for corrosive environments.GB/T 700
Weight	1500–5000 kg	Varies with width and options; affects installation.

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Components / BOM

Winding Shaft Part
Holds the core/tube and rotates to wind the film

Material: Carbon steel
Tension Control System
Maintains consistent film tension during winding to prevent wrinkles or stretching

Material: Various (pneumatic, electronic components)
Guide System
Ensures proper edge alignment of the film during winding

Material: Aluminum alloy
Drive Motor
Provides rotational power to the winding shaft

Material: Steel, copper
Control Panel
Allows operator to set parameters and monitor winding process

Material: Plastic, electronic components
Cut-and-Transfer Mechanism Optional
Cuts the web and starts a new core without stopping the line.

Manufacturers of Winder

Manufacturer profiles associated with Winder.

Sourcing Winder from China?

Tell us your specification and target quantity — we will match it against manufacturer records and come back with the factories that fit.

Request manufacturers We manufacture this

Manufacturer listings support early research and capability understanding. They are not certification, ranking, or transaction guarantees.

Procurement Evaluation Criteria

A practical evidence checklist for RFQ preparation and supplier evaluation.

Technical documentation

Request current drawings, revision history, and a signed specification sheet.

Manufacturing capability

Verify equipment lists, process limits, capacity, and representative production evidence.

Inspection readiness

Confirm test methods, calibrated equipment, sampling plans, and traceable reports.

Supplier transparency

Check the legal entity, factory address, ownership, certifications, and direct contacts.

CNFX does not score or rank suppliers. Buyers must verify all claims and documents with the legal manufacturer before ordering.

Frequently Asked Questions

What is the typical roll width range for this winder?

The roll width range is 500–2000 mm, but the exact value depends on the specific model and the production line configuration. Always verify with the manufacturer for your application.

How does the tension control system work?

The tension control system maintains consistent film tension by adjusting the torque or speed of the winding shaft. It can be pneumatic, magnetic, or electronic, and it compensates for changes in roll diameter to ensure uniform winding.

What materials are used for the winder frame?

The standard frame material is carbon steel (Q235 per GB/T 700). Stainless steel is optional for corrosive environments. Confirm the material grade with the supplier for your specific needs.

What is the ingress protection rating?

The standard ingress protection rating is IP54–IP65 (IEC 60529). Higher ratings are available for dusty or wet environments. Verify the actual rating for the model you intend to use.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records.

Preliminary Technical Classification

This page supports structured research, RFQ preparation, and supplier evaluation. It does not replace buyer-led supplier qualification, standards review, or technical approval.

Buyer enquiry

Request manufacturing insight for Winder

Ask for use case, specification boundaries, supplier type, and RFQ preparation information for this product.

Where it goes: Straight to the CNFX editorial desk, and to the manufacturer if this product is linked to a claimed profile. Nothing is broadcast to a supplier list.
Your details stay here: We do not sell or rent enquiry data, and we do not add you to a mailing list. Used only to answer this request.
No commission, no middleman: CNFX is a directory. We take no cut of any order and never negotiate on a supplier's behalf.
What we don't claim: A listing is not an endorsement. Qualify every supplier and verify every figure yourself before ordering.

pressure:	Atmospheric (non-pressurized)
other spec:	Max Roll Diameter: 1500 mm, Max Roll Weight: 2000 kg, Line Speed: 5-200 m/min
temperature:	Ambient to 60°C (140°F)

Winder

Product Specifications

Industrial Ecosystem & Supply Chain Structure

Application Fit & Sizing Matrix

Reliability & Engineering Risk Analysis

Compliance & Manufacturing Standards