Base material for vehicle head liner

Abstract

A base material for a vehicle head liner that has high recyclability and excellent physical properties such as soundproof and heat resistance is disclosed. The base material includes a core sheet made of a polyolefine-based extrusion foam sheet, and reinforcing layers disposed on upper and lower portions of the core sheet and made of natural fiber and synthetic fiber.

Description

[0001] Cross References to Related Applications [0002] This application is based upon and claims the benefit of priority from Korean Patent Application No. 10-2007-71625 filed with the Korean Intellectual Property Office on July 18, 2007, the entire disclosure of which is hereby incorporated by reference. technical field [0003] The present invention relates to a base material for a vehicle head liner, and more particularly, to a base material for a vehicle head liner having high recyclability and excellent physical properties such as sound insulation and heat resistance. Background technique [0004] Conventionally, base materials for the roof lining include resin felts, boards reinforced with natural fibers, cardboard, wood fibers, rigid polyurethane foams, and the like. [0005] Resin felt and cardboard are made by impregnating phenolic resin. The phenolic resins used as curing agents are a class of thermosetting resins prepared by the condensation reaction of phenols...

AI Technical Summary

Problems solved by technology

The disadvantages of phenolic resins are: phenol and aldehydes produced by unreacted or incomplete combustion in phenolic resin incineration are considered toxic gases, which are pollutants in the living environment including workplaces

[0006] In the case of conventional roof linings containing glass fibers or chopped glass fibres, the glass dust generated during the manufacturing and transfer process has a harmful effect on workers, and the adhesives used to bond said materials contain volatile organic solvents Drugs are also harmful to health

[0007] Although rigid urethane foam has good heat resistance and light weight, it has poor recyclability, and it tends to become brittle during the forming process for making roof liners because of poor impact resistance

[0008] The base material used for conventional roof linings has the disadvantages that it is not sound-insulating, is relatively expensive and heavy, is easily deformed during long-term use, is harmful to health and the material is difficult to recycle

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