Polyurethane multilayer composite sheet for automotive headliner and processing method thereof

A processing method and polyurethane technology, applied in chemical instruments and methods, lamination, layered products, etc., can solve the problems of skin itching, glass fiber exposure, dust pollution, etc., and achieve the effect of improving production efficiency and accelerating compounding speed.

Inactive Publication Date: 2009-09-30
陈雅君
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this method solves many shortcomings of the above two methods, it can be said that it is a revolution in the production of polyurethane multilayer composite boards, but this method and the above two methods all have the following disadvantages: hot melt adhesive powder is used as the adhesive, There is

Method used

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  • Polyurethane multilayer composite sheet for automotive headliner and processing method thereof
  • Polyurethane multilayer composite sheet for automotive headliner and processing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] The processing method of polyurethane multi-layer composite board for automobile roof, the steps are as follows:

[0029] On the workbench of the composite production line, unwind and lay flat 120g / m from bottom to top 2 Hot-bonded non-woven fabric, nano-material modified polypropylene / ethylene-vinyl acetate copolymer reinforced film with a thickness of 120 μm, unwound on the reinforced film, and the flat laying weight is 100g / m 2 Porous, sound-absorbing polyethylene terephthalate fiber mat, and then unwind on the polyethylene terephthalate fiber mat, and lay an adhesive film with a thickness of 120 μm, place a thickness of 8.0mm, and a density of 40Kg / m 3 Polyurethane foam board, and then unroll on the polyurethane foam board, spread an adhesive film with a thickness of 50 μm, unwind on the adhesive film, and lay the weight of 150g / m 2The porous basalt fiber and sisal fiber are mixed with sound-absorbing fiber mat, and then unrolled sequentially on the reinforced fib...

Embodiment 2

[0032] The processing method of polyurethane multi-layer composite board for automobile roof, the steps are as follows:

[0033] On the workbench of the composite production line, unwind and lay flat 60g / m from bottom to top 2 Hot-bonded non-woven fabric, nano-material modified high-density polyethylene reinforced film with a thickness of 100 μm, and the chopped length is 40 mm and the weight is 150 g / m on the reinforced film. 2 flax fiber, and then unroll on the flax fiber, lay an adhesive film with a thickness of 30 μm, place a thickness of 6.0mm, and a density of 35Kg / m 3 The polyurethane foam board, and then unrolled on the polyurethane foam board, the adhesive film with a thickness of 30μm is spread flat, and the chopped length is 40mm and the weight is 150g / m2 on the adhesive film. 2 flax fiber, and then unwind sequentially on the reinforcing fiber, flatten a nano-material modified high-density polyethylene reinforced film with a thickness of 100 μm and a three-layer mo...

Embodiment 3

[0036] The processing method of polyurethane multi-layer composite board for automobile roof, the steps are as follows:

[0037] Unwind and spread 45g / m on the workbench of the composite production line from bottom to top 2 spunlace non-woven fabric, filled modified high-density polyethylene reinforced film with a thickness of 200 μm, unrolled on the reinforced film, and the weight of flat laying is 300g / m 2 The glass fiber felt, and then unwind on the glass fiber felt, and spread the adhesive film with a thickness of 20μm, place a thickness of 5.0mm, and a density of 35Kg / m 3 Polyurethane foam board, and then unrolled on the polyurethane foam board, the adhesive film with a thickness of 30 μm is spread flat, and the chopped length is 60mm and the weight is 300g / m2 on the adhesive film. 2 glass fiber, and then unwind the glass fiber sequentially, flatten the nano-material modified high-density polyethylene reinforced film with a thickness of 200 μm and a grammage of 20g / m 2 ...

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Abstract

The invention discloses a polyurethane multilayer composite sheet for an automotive headliner, which has a non-woven fabric layer, a first reinforcing glue film layer, a first reinforcing fiber layer, a first adhesive film layer, polyurethane foam board, a second adhesive film layer, a second reinforcing fiber layer, a reinforcing glue layer and a surface finish layer from bottom to top. The production method of the polyurethane multilayer composite sheet has the characteristics that: the use of the reinforcing glue films as a substitute of hot-melt adhesive powder simplifies production process, improves production efficiency and product quality, radically solves dust pollution in a production process, and improves the working environment of workers. The polyurethane multilayer composite sheets produced by the method can be used for fiber glass-free automotive roofs, biodegradable automotive roofs, light automotive roofs, and other high-quality automotive headliners; the introduction of reinforcing fiber mats in different forms enables the method to produce breathable automobile roofs, high acoustic absorption automotive roofs, high strength automotive roofs and other functional automotive headliners; and the sheet and the method fill a gap of the automotive headliner industry in China.

Description

technical field [0001] The invention relates to a polyurethane multilayer composite board for an automobile ceiling and a processing method thereof. Background technique [0002] Polyurethane multi-layer composite board series products are roof interior composite boards used in the automotive industry, and are currently the mainstream products in the domestic car roof market. Traditional car interior canopy, the skeleton material mainly uses cardboard and EPS foam board, its manufacturing process is complicated, and the products produced are easy to deform, which has been gradually replaced by polyurethane multi-layer composite board. Compared with traditional materials, the roof of polyurethane multi-layer composite board has the characteristics of sound absorption, heat insulation, light weight, easy installation, and no irritating odor. and other fields. [0003] The currently announced production methods for polyurethane multilayer composite panels mainly include the f...

Claims

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Application Information

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IPC IPC(8): B32B27/00B32B27/40B32B5/18B32B5/24B32B7/10B32B37/02B32B37/06B32B37/10
Inventor 陈雅君
Owner 陈雅君
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