Polyolefin Wall Covering Laminate Without PVC Additive Release
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Solution Overview
Problem
Conventional PVC-based wall coverings release plasticizers and stabilizers due to environmental changes, posing hazards to health and environment, and leading to issues like contamination, mold growth, and peeling.
Innovation Solution
A fiber substrate sandwiched between two polyolefin substrates, each containing a polyolefin resin and flame-retardant additives, with an anti-bacterial layer of fluorine-containing polymer and an ink layer, forming a laminate structure that does not include plasticizers or stabilizers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If PVC additives (plasticizers and stabilizers) are incorporated into the PVC film, then the wall covering achieves flexibility and stability, but the additives are gradually released due to temperature and humidity changes, causing environmental and health hazards as well as material degradation
Solution Approach 1:
The patent removes harmful PVC additives (plasticizers and stabilizers) from the wall covering structure by replacing the PVC film with a multi-layer polyolefin structure. This extraction eliminates the source of harmful substance release while maintaining the necessary functional properties through alternative materials.
Solution Approach 2:
The patent employs a composite multi-layer structure consisting of a polyolefin film, a non-woven fabric layer, and a coating layer. This composite material approach replaces the single-layer PVC film, providing both structural stability and eliminating harmful additive release through the use of safer polyolefin-based materials.
2Reliability
If a multi-layer structure with polyolefin substrates and anti-bacterial layer is used, then flame retardancy and anti-bacterial properties are achieved, but the device complexity increases compared to conventional single-layer PVC wall coverings
Solution Approach 1:
The patent divides the wall covering into distinct functional segments: a polyolefin film layer for base structure, a non-woven fabric layer for reinforcement, and a coating layer containing fluorine-containing polymer for flame retardancy and anti-bacterial properties. This segmentation allows each layer to perform its specific function optimally while enabling independent optimization of each component.
Solution Approach 2:
The coating layer containing fluorine-containing polymer serves multiple functions simultaneously: it provides flame retardancy, anti-bacterial properties, and enhanced durability. This multi-functionality reduces the need for separate treatment layers, thereby managing complexity while achieving multiple performance goals.
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 laminate structure provides flame retardancy, mechanical strength, and antibacterial properties, reducing environmental and health hazards while maintaining durability and appearance.
Implementation Method 1
The anti-bacterial layer includes a fluorine-containing polymer
Implementation Method 2
The first polyolefin substrate and the second polyolefin substrate are each formed from a polyolefin composition that includes a first polyolefin resin material, a second polyolefin resin material, and a flame-retardant additive material
Data Source
AI summary
An anti-bacterial and flame-retardant wall covering structure is provided. The wall covering structure includes a fiber substrate, two polyolefin substrates, and an anti-bacterial layer. The two polyolefin substrates are formed on both side surfaces of the fiber substrate to form a sandwich laminate. A polyolefin composition of each of the polyolefin substrates includes a first polyolefin resin material, a second polyolefin resin material, and a flame-retardant additive material. The first polyolefin resin material is a polyethylene resin, and the second polyolefin resin material is a polypropylene resin that includes a propylene block copolymer. Based on a total weight of the polyolefin composition being 100 parts by weight, a content of the propylene block copolymer is not less than 5 parts by weight. The anti-bacterial layer is formed on a surface of the sandwich laminate and includes a fluorine-containing polymer.