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Production process for manufacturing roof by polypropylene and glass fiber plate

A production process and sheet manufacturing technology, applied in the field of automotive interior parts, can solve the problems of poor product rigidity, heavy product weight, easy to break, etc., and achieve the effects of improving production efficiency, reducing labor intensity, and reducing weight

Inactive Publication Date: 2011-04-20
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

Existing ceilings are usually formed directly from composite PU (polyurethane) sheets. This molding process mainly has the following problems: 1. The sound absorption index does not meet the requirements, usually only reaching level 2; 2. The rigidity of the product Poor, especially long-sized products are easy to break and sag; 3. The product is heavy, which is not conducive to the lightweight of the whole vehicle and energy saving

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Produce Dongfeng Honda 2PW roof, its specification is: L1660×W1208mm.

[0017] The production process steps of this ceiling are as follows:

[0018] 1. Setting of ceiling forming conditions

[0019] (1) Molding time: 30±2 seconds;

[0020] (2) Molding pressure: 5±0.5MPa;

[0021] (3) Molding temperature: baked in double ovens, the temperature of the upper heating zone of the main heating furnace: 320±10°C, the temperature of the lower heating zone: 380±10°C; the temperature of the upper heating zone of the preheating furnace: 270±10°C, Lower heating zone: 360±10℃, baking time is 30±2S.

[0022] 2. Paving

[0023] The fabric is made of knitted fabric with PU (polyurethane) foam and adhesive film; the base material is the upper layer of adhesive film covered with PP (polypropylene) + GF (glass fiber) + foaming agent, and the lower layer of non-ventilated film. The bottom layer is non-woven fabric, the weight of the base material is 750g / m 2 , thickness 6.5mm.

[00...

Embodiment 2

[0052] Produce Guangzhou Honda 2PX roof, its specification is: L1830×W1330mm.

[0053] The production process steps of this ceiling are as follows:

[0054] The base material is made of PP plus glass fiber molding material.

[0055] 1. Setting of ceiling forming conditions

[0056] (1) Molding time: 31±2 seconds;

[0057] (2) Molding pressure: 5±0.5MPa;

[0058] (3) Molding temperature: baked in double ovens, the temperature of the upper heating zone of the main heating furnace: 290±10°C, the temperature of the lower heating zone: 400±10°C; the temperature of the upper heating zone of the preheating furnace: 250±10°C, and the lower heating Zone: 360±10℃, baking time is 30±2S.

[0059] 2. Paving

[0060] The fabric is made of knitted fabric with PU foam and adhesive film; the base material is the upper layer of adhesive film covered with PP+GF+ foaming agent, the lower layer of non-ventilated film, and the bottom layer of non-woven fabric as the bottom layer. The weight of...

Embodiment 3

[0089] Produce SGM18 canopy, its specification is: L1800×W1330mm.

[0090] The production process steps of this ceiling are as follows:

[0091] 1. Setting of ceiling forming conditions

[0092] (1) Molding time: 31±2 seconds;

[0093] (2) Molding pressure: 5±0.5MPa;

[0094] (3) Molding temperature: baked in double ovens, the temperature of the upper heating zone of the main heating furnace: 290±10°C, the temperature of the lower heating zone: 400±10°C; the temperature of the upper heating zone of the preheating furnace: 250±10°C, and the lower heating Zone: 360±10℃, baking time is 30±2S.

[0095] 2. Paving

[0096] The fabric is knitted fabric with PU foam and adhesive film; the base material is the upper layer of adhesive film covered with PP+GF+ foaming agent, the lower layer of non-ventilated film, and the bottom layer of non-woven fabric as the bottom. The weight of the base material is 800g / m 2 , thickness 7mm.

[0097] (1) Position the plate placement position on...

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PUM

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Abstract

The invention relates to a production process for a car roof, in particular to a production process for manufacturing a roof by a polypropylene and glass fiber plate, which is used for being installed at the top of a car and playing roles of heat and sound insulation and beautification and belongs to the technical field of interior parts of cars. The production process for manufacturing the roof by the polypropylene and glass fiber plate comprises the following steps: (1) laying raw materials: laying base materials formed after polypropylene and glass fiber are compounded on a feed platform; (2) baking: placing the laid base materials into an oven to bake; (3) pressing and molding: placing the shell fabrics and the baked base materials into a die to be pressed, cooled and molded so as to form a semi-finished product; and (4) stamping the semi-finished product: delivering the semi-finished product into a stamping die to stamp.

Description

technical field [0001] The invention relates to a production method of an automobile roof lining, specifically a production process of making a roof with a polypropylene plus glass fiber plate, which is used to install on the top of the automobile to play the role of heat insulation, sound insulation and beautification. The utility model belongs to the technical field of automotive interior parts. Background technique [0002] The car roof is 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 absorption, low weight, and high s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60R13/01B26F1/38B32B17/04B32B17/10B32B27/12B32B37/06B32B37/10B32B38/16
Inventor 杨子晔
Owner WUXI GISSING AUTO ACOUSTIC PARTS TECH CO LTD
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