Production method of ultra-lightweight pp fiberglass board

A production method and technology of glass fiber board, applied in chemical instruments and methods, layered products, lamination and other directions, can solve the problems of shedding distribution and unevenness of foamed microspheres, achieve good uniformity and molding effect, avoid The effect of decreased utilization and uneven distribution of foamed microspheres

Active Publication Date: 2020-11-03
天津正海广润科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The purpose of the present invention is to provide a production method of ultra-lightweight PP glass fiber board, and the problems of foaming microspheres falling off and uneven distribution

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Glass fiber and PP fiber are mixed according to the ratio of 50-55% PP and 45-50% glass fiber, after opening, pave into a grammage of 50-80g / m 2 Sparse fiber web; spread foamed microspheres on the sparse fiber net according to the ratio of 2-5% of the weight of the sparse fiber net; the sparse fiber net is reciprocally stacked on the Teflon net to form a multi-layer fiber web; the surface of the multi-layer fiber web Then according to 0.5-2 g / m 2 Sprinkle a layer of foamed microspheres; the multi-layer fiber net moves forward continuously at a certain speed with the Teflon net, and after being pressed by the Teflon net, it enters the heating process, the PP fiber melts, and then the upper and lower surfaces Add 50-120 g / m respectively 2 Hot melt adhesive film (can be modified PE film) and 35-50 g / m 2 High-quality non-woven fabrics, pressed to a thickness of 1.2-2mm, made into sheets.

[0025] 600 g / m produced by the above method 2 The left and right sheets, heated a...

Embodiment 2

[0028] Glass fiber and PP fiber are mixed according to the ratio of 50-55% PP and 45-50% glass fiber, after opening, pave into a grammage of 50-80g / m 2 The sparse fiber web; the sparse fiber web is reciprocally stacked on the Teflon belt to form a multi-layer fiber web; in the multi-layer fiber web, the surface is then 0.5-2 g / m 2 Sprinkle a layer of foamed microspheres; the multi-layer fiber net moves forward continuously at a certain speed with the Teflon belt, and after being pressed by the Teflon belt, it enters the heating process, and the PP fiber is melted and pressed to a thickness 1.2-2mm, made into sheet.

[0029] Add 80-120 g / m to the upper and lower surfaces of the sheet respectively 2 of hot melt adhesive powder and 50-70 g / m 2 For the coated non-woven fabric, melt the rubber powder, melt the film part on the coated non-woven fabric, and press it into a plate.

[0030] Due to the step-by-step process, PE rubber powder with a lower melting point can be used as t...

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PUM

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Abstract

The invention relates to a method for producing a super-lightweight PP glass fiber sheet. The method adopts a dry process and comprises the following steps: forming sparse fiber webs by glass fibers and PP fibers; perfusing foamed microspheres on the sparse fiber webs; stacking the sparse fiber webs to form a multilayer fiber web, and not carrying out needling reinforcement; heating the multilayerfiber web under the clamping of two layers of Teflon nets; and carrying out pressing to prepare a sheet material. The sheet material is directly heated and pressed without needling reinforcement, thus, the falling of the foamed microspheres can be avoided, the height of swelling of the PP glass fiber sheet can be increased, and a better lightweight effect is obtained.

Description

technical field [0001] The invention relates to a production method of a PP glass fiber board. Background technique [0002] PP fiberglass board, also known as lightweight GMT (Glass Mat Reinforced Thermoplastics) material, is a lightweight composite material that is widely used in automotive interior ceilings, coat racks and other products. [0003] The main components of PP fiberglass board are PP and glass fiber (referred to as glass fiber). There are two main production methods, namely dry method and wet method. [0004] The dry method uses PP fiber and glass fiber as raw materials, through opening, carding, laying, lamination, needle punching to make a felt, and then heat and cold press to make a board. The dry process has simple equipment, small investment, poor uniformity of the produced board, and slightly small heating expansion height. At present, the base material used for the ceiling is generally 1000 g / m 2 about. [0005] The wet method uses PP powder and gla...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B37/06B32B37/10B32B37/00
CPCB32B37/00B32B37/06B32B37/10
Inventor 李海帆朱维珍单汝坤王克强韦明王国淑仲崇华韩军
Owner 天津正海广润科技有限公司
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