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Wet-method roof producing process of spreaded glass fibers with adhesive

A glass fiber rolling and canopy technology, which is applied to the superstructure and sub-assembly of the superstructure, can solve the problems of the product NVH performance index not meeting the requirements, unfavorable for the lightweight of the whole vehicle, and poor product rigidity. Operation efficiency, good rigidity, and the effect of saving manufacturing costs

Active Publication Date: 2013-09-18
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

Many existing ceilings are directly molded by composite PU sheets. This molding process mainly has the following problems: 1. The product NVH (NVH is the general term for noise Noise, vibration Vibration, and comfortable Harshness) performance indicators cannot meet the requirements; 2. The rigidity of the product is poor, especially the large-sized product is easy to break and sag; 3. The product is heavy, which is not conducive to the lightweight of the whole vehicle, energy saving and environmental protection

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Embodiment 1: A process for producing a roof (canopy specification: L1850×W1400) by wet glass fiber rolling, including the following process steps:

[0018] (1) Glue rolling: roll polyurethane glue on the side of the glass fiber felt in the glue rolling machine to obtain the glued glass fiber felt; the amount of glue applied is 35g / m 2 , when rolling the rubber, the frequency of the main roller is 50Hz, the frequency of the slave roller is 40Hz, the frequency of the roll material drum is 85Hz, the gap between the horizontal roller of the rubber rolling machine is 0.20mm, and the gap between the upper and lower rollers of the rubber rolling machine is 15mm;

[0019] (2) Compression molding: Lay non-woven fabric, glued glass fiber mat, rigid polyurethane, glued glass fiber mat, and non-woven fabric in order from top to bottom, and glue the side of the glued glass fiber mat with glue. Facing the direction of rigid polyurethane; carry out compression molding to obtain semi-...

Embodiment 2

[0025] Embodiment 2: A process for producing a roof (canopy specification: L1850×W1400) by wet glass fiber rolling, including the following process steps:

[0026] (1) Glue rolling: roll polyurethane glue on the side of the glass fiber felt in the glue rolling machine to obtain the glued glass fiber felt; the amount of glue applied is 40g / m 2 , when rolling rubber, the frequency of the main roller is 52Hz, the frequency of the slave roller is 42Hz, the frequency of the roll material drum is 95Hz, the gap between the horizontal roller of the rubber rolling machine is 0.21mm, and the gap between the upper and lower rollers of the rubber rolling machine is 15.2 mm;

[0027] (2) Compression molding: Lay non-woven fabric, glued glass fiber mat, rigid polyurethane, glued glass fiber mat, and non-woven fabric in order from top to bottom, and glue the side of the glued glass fiber mat with glue. Facing the direction of rigid polyurethane; perform compression molding to obtain a semi-f...

Embodiment 3

[0033] Embodiment 3: A process for producing a roof (canopy specification: L1850×W1400) by wet glass fiber rolling, including the following process steps:

[0034] (1) Glue rolling: Roll polyurethane glue on the side of the glass fiber felt in the glue rolling machine to obtain the glued glass fiber felt; the amount of glue applied is 30g / m 2 , when rolling rubber, the frequency of the main roller is 48Hz, the frequency of the slave roller is 38Hz, the frequency of the roll material drum is 75Hz, the gap between the horizontal roller of the rubber rolling machine is 0.20mm, and the gap between the upper and lower rollers of the rubber rolling machine is 14.8 mm;

[0035] (2) Compression molding: Lay non-woven fabric, glued glass fiber mat, rigid polyurethane, glued glass fiber mat, and non-woven fabric in order from top to bottom, and glue the side of the glued glass fiber mat with glue. Facing the direction of rigid polyurethane; perform compression molding to obtain a semi-f...

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Abstract

The invention relates to wet-method roof producing process by glass fibers spread with adhesive, which comprises steps: firstly, spreading polyurethane adhesive on one surface of a glass fiber felt by an adhesive spreader so as to produce a glass fiber felt with adhesive, secondly, sequentially laying non-woven cloth, the glass fiber felt with adhesive, hard polyurethane, another glass fiber felt with adhesion and another non-woven felt from top to bottom, realizing pressing forming and producing a semi-finished product, thirdly, cooling and shaping the semi-finished product produced after pressing forming at normal temperature to produce a formed semi-finished product, fourthly, sequentially laying a fabric, an adhesive film and the formed semi-finished product from top to bottom prior to laminating the fabric, fifthly, cooling and shaping the formed semi-finished product, which is produced by means of laminating the fabric, at constant temperature, and sixthly, cutting the formed semi-finished product which is shaped by means of cooling by a water jet. Accordingly, a roof is produced. By the aid of the wet-method roof producing process, the weight of the roof is greatly lightened, and adhesive spreading quantity can be precisely controlled by means of spreading the adhesive on the single surfaces of the glass fibers.

Description

technical field [0001] The invention relates to a production process for a roof that is installed on the top of a car and plays the role of heat insulation, sound insulation and beautification, especially a process for producing a roof with wet glass fiber rolling, which belongs to automotive interior parts technology field. Background technique [0002] The car roof is installed on the top of the car, which can 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 current existing production technology, performance indicators such as high sound absorption, low weight, and high strength of the canopy have become bottlenecks, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60R13/02
Inventor 费健峰
Owner WUXI GISSING AUTO ACOUSTIC PARTS TECH CO LTD
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