Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Manufacturing method of multilayer composite board of polyurethane

A production method and composite board technology, applied in the direction of layered products, chemical instruments and methods, synthetic resin layered products, etc., can solve the problem of uneven distribution of hot melt adhesive powder, slow heat transfer speed of PU board, complex production process, etc. Problems, to achieve the effect of high production efficiency, strong rigidity, and accelerated compounding speed

Inactive Publication Date: 2009-02-18
LIYANG SHANHU IND CO LTD
View PDF1 Cites 23 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of this method is that the production process is complicated, and the PU board needs to be compounded twice; the hot melt adhesive powder is directly spread on the PU board. Poor fluidity can easily cause uneven distribution of hot melt adhesive powder on the PU board, thereby causing product quality problems; The heat transfer speed of the PU board is slow, so the production speed of the composite machine must be reduced or the temperature of the heating plate of the composite machine must be increased to meet the production requirements, resulting in high energy consumption and low production efficiency of the product line

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Manufacturing method of multilayer composite board of polyurethane
  • Manufacturing method of multilayer composite board of polyurethane
  • Manufacturing method of multilayer composite board of polyurethane

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] The production method of polyurethane multi-layer composite board, steps are as follows:

[0025] 1) Sprinkle chopped E-glass fibers with a length of 10mm and high-density polyethylene rubber powder with a melt index of 24g / 10min on the conveyor belt of the compound machine at a mass ratio of 2.8:1 (such as figure 1 As shown), at 220°C, under the pressure of 0.6MPa, the speed of the laminating machine is 8m / min to melt and compound the film, cooling and winding, to obtain the glue glass film, the square gram weight of the glue glass film is 302g / m 2 ;

[0026] 2) On the workbench of the composite production line, unwind, stack, and lay flat 60g / m from bottom to top 2 Hot-bonded non-woven fabric, adhesive glass film and modified ethylene-vinyl acetate copolymer adhesive film with a thickness of 80 μm, and then a polyurethane rigid foam board with a thickness of 6.0 mm is placed on it, and then on the polyurethane rigid foam board. On the top, unwind, stack, and tile mo...

Embodiment 2

[0029] The production method of polyurethane multi-layer composite board, steps are as follows:

[0030] 1) Spread chopped E-glass fiber with a length of 80mm and polypropylene rubber powder with a melt index of 15g / 10min on the conveyor belt of the compound machine at a mass ratio of 2:1, at 240°C and a pressure of 0.4MPa, The speed of the laminating machine is 10m / min, and the film is melted and compounded, cooled and rolled up to obtain the glued glass film, and the square gram weight of the glued glass film is 375g / m 2 ;

[0031] 2) On the workbench of the composite production line, unwind, stack and lay flat 45g / m from bottom to top 2 hot-rolled non-woven fabric, adhesive glass film and modified polyurethane elastomer adhesive film with a thickness of 60 μm, and then place a polyurethane rigid foam board with a thickness of 6.3 mm on it, and then place it on the polyurethane rigid foam board from bottom to top. Unwinding, stacking, and flat laying of modified ethylene-v...

Embodiment 3

[0034] The production method of polyurethane multilayer composite board, the steps are as follows:

[0035] 1) Sprinkle chopped E-glass fiber with a length of 40mm and ethylene-vinyl acetate copolymer rubber powder with a melt index of 7g / 10min on the conveyor belt of the compound machine at a mass ratio of 0.8:1. Under pressure, the speed of the composite machine is 11m / min for melting and compounding film formation, cooling and winding to obtain the glued glass film, the square gram weight of the glued glass film is 330g / m 2 ;

[0036] 2) On the workbench of the composite production line, unwind, stack and lay flat 45g / m from bottom to top 2The hot-rolled non-woven fabric, adhesive glass film and modified nylon adhesive film with a thickness of 50 μm are placed on it, and a polyurethane rigid foam board with a thickness of 5.0 mm is placed on it, and then unrolled on the polyurethane rigid foam board from bottom to top. , stacked, tiled modified nylon adhesive film, plasti...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
lengthaaaaaaaaaa
melt flow indexaaaaaaaaaa
Basis weightaaaaaaaaaa
Login to View More

Abstract

The invention discloses a method for producing a polyurethane multilayered composite plate. The method comprises the following steps: (1)chopped glass fiber and hot melt rubber powder are scattered on a transmission caterpillar of a compounding machine and are subjected to heat pressing and compounding to form a film; and the film is cooled and coiled to obtain a rubber glass film; and (2) firstly, nonwoven fabric, the rubber glass film and an adhesive film in turn are unreeled, stacked and paved on a worktable of a composite production line from top to bottom; and secondly, a polyurethane rigid foam plate is placed; the adhesive film, the rubber glass film and a hot melt rubber film in turn are unreeled, stacked and paved on the polyurethane rigid foam plate from bottom to top and are subjected to heat pressing, compounding and cooling to obtain the polyurethane multilayered composite plate. The method can realize one-step compounding and molding of the polyurethane composite plate and has low consumption of the production line and high production efficiency; a production process using the rubber glass film as a strengthening material and the adhesive film as a cementing agent improves the bonding force between the strengthening material and a PU plate; and a prepared product has the advantages of strong rigidity, flat surface and stable quality and suitability for molding the roof of an automobile by a cold mould method or a dry method.

Description

technical field [0001] The invention relates to a production method of a polyurethane multilayer composite board, which belongs to the technical field of composite material processing. 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 automotive interior ceilings, the skeleton materials are mainly cardboard and EPS foam board, the manufacturing process is complicated, and the products produced are easy to deform, which has been gradually replaced by polyurethane multi-layer composite boards. 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 mu...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): B32B37/06B32B37/10B32B27/20B32B27/12B32B27/00B29C43/22B29K509/08
Inventor 陈雅君
Owner LIYANG SHANHU IND CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com