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Wet process production process of polyurethane foaming ceiling local reinforcement

A local strengthening and production process technology, applied in the direction of layered products, chemical instruments and methods, glass/slag layered products, etc., can solve the problems of poor product rigidity, sound absorption index not meeting the requirements, easy to sag, etc., to achieve rigidity Good results

Inactive Publication Date: 2011-03-23
WUXI GISSING AUTO ACOUSTIC PARTS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This kind of molding process mainly has the following problems: 1. The sound absorption index cannot meet the requirements; 2. The product has poor rigidity, especially long-sized products are easy to sag and break;

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Produce the canopy of Shanghai General Model SGM258, the canopy specification is: 3060×1650mm.

[0020] The production process of the canopy is as follows:

[0021] (a) Rolling glue: use a glue rolling machine to roll glue on the upper and lower surfaces of the polyurethane roof substrate, the glue for rolling is water-based glue, the speed of the glue rolling machine is controlled at 35 rpm, the upper and lower rollers of the glue rolling machine The spacing is controlled at 6mm, and the amount of glue on each side of the upper and lower surfaces of the polyurethane canopy substrate is controlled at 170g / m 2 ;

[0022] (b) Rolling and laying of glass fiber felt: Take a piece of glass fiber felt that is the same size as the part that needs to be strengthened (generally, the part that needs to be strengthened is located at the roof lining skylight part, according to this method, it can be strengthened at any position at will) (The glass fiber mat needs to be of emulsio...

Embodiment 2

[0036] Produce the roof of Toyota 314A, the specification of the roof is 2800×1450mm

[0037] The production process of the canopy is as follows:

[0038] (a), Rolling glue: Use a glue rolling machine to roll glue on the upper and lower surfaces of the polyurethane roof substrate. The glue for rolling is water-based glue. The speed of the glue rolling machine is controlled at 40 rpm. The distance between the rollers is controlled at 5.5mm, and the amount of glue on each side of the upper and lower surfaces of the polyurethane roof substrate is controlled at 150g / m 2 ;

[0039] (b) Rolling and laying of glass fiber felt: Take a piece of glass fiber felt with the same size as the part to be reinforced and roll it on the glue rolling machine. The glue for rolling is water-based glue. The pitch of the lower rollers is controlled at 1mm; then a whole sheet of large fiberglass mat (generally 150g / m 2 ); then put the glass fiber felt rolled over the glue on the part that needs to ...

Embodiment 3

[0053] Production of Shanghai GM model D16 canopy, the specification of the canopy is 1500×1350mm.

[0054] The production process of the canopy is as follows:

[0055] (a), Glue rolling: Use a glue rolling machine to roll glue on the upper and lower surfaces of the polyurethane roof substrate. The glue for rolling coating is water-based glue. The speed of the glue rolling machine is controlled at 38 rpm. The distance between the rollers is controlled at 4mm, and the amount of glue on each side of the upper and lower surfaces of the polyurethane canopy substrate is controlled at 160g / m 2 ;

[0056] (b) Rolling and laying of glass fiber felt: Take a piece of glass fiber felt with the same size as the part to be reinforced and roll it on the glue rolling machine. The glue for rolling is water-based glue. The distance between the lower rollers is controlled at 0.75mm, and then a whole sheet of large glass fiber mat (generally 150g / m 2 ); then put the glass fiber felt rolled ov...

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Abstract

The invention relates to a wet process production process of polyurethane foaming ceiling local reinforcement, comprising the following steps of rubber rolling, glass fiber felt paving, compression moulding, cooling setting, shell fabric adhering, cooling setting, water cutting and the like. A ceiling manufactured by the method can achieve greatly reduced weight, meets the demand of the light design of the finished automobile, has good rigidity and can prevent products which are about 3m long from being broken or hanging down, and moreover, harmful substances are not generated in the whole production process.

Description

technical field [0001] The invention relates to a wet process for partially strengthening a polyurethane foam roof, in particular to a wet process for partially strengthening a polyurethane soft foam roof that is installed on the top of a car and plays the role of heat insulation, sound insulation and beautification The production process belongs to the technical field of manufacturing automotive interior parts. Background technique [0002] Automotive interior parts are generally installed on the top of the car to play the role of heat insulation, sound insulation and beautification. In the era of more and more pursuit of high performance, environmental protection, energy saving, lightweight, and individualization, the interior of a car, like the shape of a car, has become an important factor for people to choose a car. Therefore, the requirements for automotive interior parts are getting higher and higher. In the prior art, performance indicators such as high sound absor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B37/12B32B37/06B32B37/10B32B38/04B32B17/02B32B17/10B32B17/12
Inventor 陈涛
Owner WUXI GISSING AUTO ACOUSTIC PARTS TECH CO LTD
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