Making method of comfortable polyurethane foam

A technology of polyurethane foam and its production method, which is applied in the direction of coating, etc., can solve the problems of poor comfort of polyurethane foam, and achieve the effects of being suitable for large-scale production, reducing production costs, and reducing bonding processes

Inactive Publication Date: 2018-06-15
JILIN UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Aiming at the technical problem of poor comfort of existing polyurethane foam, the present invention provides a method for manufacturing comfortable polyurethane foam with simple operation process and low cost

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Place the polyurethane hot-melt film with a thickness of 0.03mm on the surface of a foam slice with a thickness of 10mm and a hardness of 2.5kPa, with the side of the release paper facing up, and then put it together between the two heating plates of the flat vulcanizer, and then Carry out thermal compounding, the specific process parameters are thermal compounding temperature: 135°C, pressure 0.1MPa, time 20s, and then put the compounded foam slices into the polyurethane foam mold from which the material has been removed in advance, peel off the Type paper, pour liquid polyurethane material, and after 6 minutes, take out the integrated foam piece from the mold to obtain a comfortable polyurethane foam.

Embodiment 2

[0027] Place a polyurethane hot-melt film with a thickness of 0.05mm on the surface of a foam slice with a thickness of 15mm and a hardness of 4kPa, with the side of the release paper facing up, and then put it together between the two heating plates of the flat vulcanizer, and then carry out Thermal lamination, the specific process parameters are thermal lamination temperature: 140°C, pressure 0.2MPa, time 25s, and then put the laminated foam slices into the polyurethane foam mold from which the material has been removed in advance, and remove the release mold. The paper is poured with liquid polyurethane material, and after 7 minutes, the integrated foam piece is taken out from the mold to obtain a comfortable polyurethane foam.

Embodiment 3

[0029] Place a polyurethane hot-melt film with a thickness of 0.05mm on the surface of a foam slice with a thickness of 15mm and a hardness of 4kPa, with the side of the release paper facing up, and then put it together between the two heating plates of the flat vulcanizer, and then carry out Thermal lamination, the specific process parameters are thermal lamination temperature: 140°C, pressure 0.1MPa, time 25s, and then put the laminated foam slices into the polyurethane foam mold from which the material has been removed in advance, and remove the release mold. The paper is poured with liquid polyurethane material, and after 8 minutes, the integrated foam piece is taken out from the mold to obtain a comfortable polyurethane foam.

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Abstract

The invention discloses a simple-operating process and low-cost making method of comfortable polyurethane foam. The method comprises the following steps: (1) producing a polyurethane foaming die according to a predetermined shape; (2) cutting a polyurethane hot-melt film to form the predetermined shape, and thermally compounding the cut polyurethane hot-melt film with a foam slice to form a thermally-compounded foam slice; and (3) cooling the thermally-compounded foam slice obtained in step (2), placing the cooled thermally-compounded foam slice in the polyurethane foaming die obtained in step(1), then pouring a polyurethane foam raw material, and taking out the obtained material 6-8 min later in order to obtain the comfortable polyurethane foam. The method improves the comfortableness ofthe polyurethane foam, and has the advantages of simple operating process, low cost, suitableness for large-scale production, and great practical significance.

Description

technical field [0001] The invention belongs to the technical field of automobile seats, and in particular relates to a method for manufacturing a comfortable polyurethane foam. Background technique [0002] In order to enhance the passenger comfort of car seats, improving the comfort of polyurethane foam is a relatively direct and effective method. The current processing method is to manually spray glue on the surface of the molded polyurethane foam, and then paste the foam slices on On the surface of polyurethane foam, polyurethane foam enters the assembly station of the next seat after a period of aging. This method has the disadvantages of high cost and complicated operation process. If the foam slices are directly placed into the mold cavity in the reserved position, and then poured into the liquid polyurethane material, the operation time can be saved, the operation steps can be simplified, and the labor cost can be reduced. However, because the foam slice surface has ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J9/42C08J9/36C08L75/04
Inventor 管东波康海波翟晓杰李金良胡一
Owner JILIN UNIV
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