Release Liner: Thickness 0.05-0.20 mm, Caliper 50-200 gsm

Component Specifications

Definition

A release liner is a specialized paper or film substrate coated with a release agent, designed to protect pressure-sensitive adhesive surfaces of silicone gaskets during manufacturing, storage, and transportation. It provides a non-stick surface that allows easy removal without damaging the gasket's adhesive properties or structural integrity.

Working Principle

The release liner functions through a low-surface-energy coating (typically silicone-based) that creates a barrier between the adhesive surface of the silicone gasket and the liner itself. This coating reduces adhesion forces, allowing clean separation when the gasket is applied to its target surface. The liner maintains dimensional stability and protects against contamination.

Materials

Typically consists of a base substrate (kraft paper, polyethylene-coated paper, polyester film, or polypropylene film) coated with a release agent (silicone, fluorosilicone, or non-silicone formulations). Calendering may be applied for smoothness.

Technical Parameters

Parameter	Typical range	Notes & selection driver
Caliper	50-200 gsm
Thickness	0.05-0.20 mm
Release Force	5-50 g/in (low to medium)
Tensile Strength	≥ 20 N/15mm MD
Temperature Resistance	-40°C to +150°C

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

Standards

ISO 29862, DIN 55472

Parent Products

This component is used in the following industrial products

High-Precision Silicone Gasket

A precision-engineered sealing component manufactured from liquid silicone rubber (LSR) via injection molding.

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Engineering Analysis

Risks & Mitigation

Adhesive transfer to liner
Liner tearing during removal
Contamination from liner debris
Incompatibility with gasket adhesive chemistry

FMEA Triads

Trigger: Inadequate release coating uniformity
Failure: Partial adhesion of gasket to liner, causing tearing or deformation
Mitigation: Implement quality control with release force testing and visual inspection of coating

Trigger: Moisture absorption in paper-based liners
Failure: Reduced dimensional stability and curling, affecting automated handling
Mitigation: Use moisture-barrier coatings or switch to synthetic film liners in humid environments

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance

±0.01 mm thickness variation, ±5% release force consistency

Test Method

ASTM D3330 for peel adhesion, ISO 29862 for release force measurement

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

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Manufacturers of Release Liner

Manufacturer profiles associated with Release Liner.

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Related Components

Mold Release Coating

Specialized coating applied to molds to facilitate easy release of silicone seal rings during manufacturing.

Silicone Polymer Base

Silicone polymer base is a high-temperature resistant polymer material used as the foundational component in silicone rubber compounds for industrial applications.

Reinforcing Filler

Reinforcing filler is a material added to silicone rubber compounds to enhance mechanical properties, thermal stability, and durability in high-temperature applications.

Processing Aids

Processing aids are specialized additives used to improve the manufacturability and performance of high-temperature silicone rubber compounds during industrial processing.

Frequently Asked Questions

What is the primary function of a release liner in gasket applications?

To protect the adhesive surface of silicone gaskets from contamination, premature adhesion, and damage during handling and storage, while allowing easy removal during installation.

How do you select the appropriate release liner for high-precision silicone gaskets?

Selection depends on gasket adhesive type, required release force, environmental conditions (temperature/humidity), and compatibility with automated dispensing systems. Low-release-force liners are preferred for delicate gaskets.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records. See the editorial policy.

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.

Release Liner