Polyacetal Release Film for Rigid Easy-Peel Auto Laminates
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Solution Overview
Problem
Existing multilayer structured films for decorative films in automobiles require increased production steps and costs due to the combination of a base layer with low releasability and an easy peel film or release agent to achieve rigidity and releasability.
Innovation Solution
A release film composed of a polyacetal resin base layer with specific melt flow rates and heat stabilizers, providing high rigidity and excellent releasability without the need for additional easy peel films or release agents.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a base layer with rigidity but low releasability is combined with an easy peel film or release agent, then releasability is improved, but the number of production steps and production costs increase
Solution Approach 1:
The invention merges the base layer and easy peel film into a single integrated release film made of polyacetal resin. The polyacetal resin simultaneously provides both the rigidity function (replacing the base layer) and the releasability function (replacing the easy peel film), eliminating the need for separate layers and reducing production steps.
Solution Approach 2:
The polyacetal resin release film serves multiple functions simultaneously: it provides structural rigidity like a base layer, delivers excellent releasability like an easy peel film, and maintains dimensional stability. This multi-functional material replaces what previously required multiple separate components.
2Reliability
If a base layer with rigidity but low releasability is combined with an easy peel film or release agent, then releasability is improved, but production costs increase
Solution Approach 1:
By combining the rigidity-providing base layer and releasability-providing easy peel film into a single polyacetal resin release film, the invention eliminates the need for separate production and assembly processes, thereby reducing overall production costs despite the specialized material used.
Solution Approach 2:
The invention uses polyacetal resin as a composite material that inherently combines the properties of both rigidity and releasability. This eliminates the need for complex multilayer composite structures with different materials, simplifying manufacturing and reducing costs.
3Ease of manufacture
If a film with both rigidity and releasability is achieved using only the base layer, then the number of production steps and costs are reduced, but releasability must be maintained
Solution Approach 1:
The invention changes the material parameter by selecting polyacetal resin, which has specific physical and chemical properties including appropriate melt flow rate (0.5-50 g/10 min) and crystallization characteristics. These parameter changes enable the single-layer film to achieve both rigidity and excellent releasability simultaneously.
Solution Approach 2:
The polyacetal resin release film is designed as a disposable single-use component that is extruded and formed into the final shape. After serving its purpose as a release film, it is discarded, eliminating the need for complex multilayer structures that would require more elaborate disposal or recycling processes.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The polyacetal resin-based release film offers high rigidity and excellent peelability, reducing production steps and costs while protecting decorative films for automobiles.
Implementation Method 1
a flow rate of the polyacetal resin is 0.5 to 50 g/10 min
Data Source
AI summary
According to the present disclosure, a release film having high rigidity and excellent releasability can be provided for protecting exterior films, particularly decorative films for automobiles. A release film includes a base layer containing a polyacetal resin.