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
CN101367287AInactive Publication Date: 2009-02-18LIYANG SHANHU IND CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
LIYANG SHANHU IND CO LTD
Publication Date
2009-02-18
Estimated Expiration
Not applicable · inactive patent

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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.
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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
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