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Box type polyurethane foam preparation method

A polyurethane foam and box-type technology, which is applied in the field of box-type polyurethane foam preparation, can solve the problems of inconsistent quality, waste, and high slice weight, and achieve the effects of improving flatness, uniform density, and reducing action time

Active Publication Date: 2019-09-20
重庆丰裕宇科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] 1. The foam is in the shape of bread, and the middle part of the foam is raised, so that the foam in the raised part needs to be cut off during use, and then discarded, resulting in a lot of waste;
[0005] 2. When the foam is used for slicing, the weight of the slices on the lower side tends to be higher, which makes the overall quality inconsistent

Method used

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  • Box type polyurethane foam preparation method
  • Box type polyurethane foam preparation method
  • Box type polyurethane foam preparation method

Examples

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Embodiment Construction

[0048] see figure 1 and Image 6 , the present invention provides a box-type polyurethane foam preparation method, the method is mainly based on the application of a foaming device, the foaming device comprises a foaming box, a cylindrical sealing box and a rotating device 3, the sealing box is installed in the rotating device 3, and the foam box is set in the sealed box.

[0049] A layer of mold release film needs to be laid in the foam box 4 (function: to facilitate the mold release of the foam in the later stage).

[0050] On the basis of retaining the demoulding film laid at the bottom of the original foaming box 4, an edge-raising film 6 that can move up and down is additionally added. The edge-raising film 6 is annular and matches the inner wall of the foaming box 4 (fit ), but the height of the edge-raising film 6

[0051] To put it simply, the edge-raising film 6 can be moved upwards under human control (moving to the highest height is ...

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PUM

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Abstract

The invention relates to a box type polyurethane foam preparation method. Through the box type polyurethane foam preparation method, it can be ensured that foaming of foaming fluid is implemented at constant temperature, constant pressure and constant humidity all the time, the quality of a foamed material is ensured, and the foamed material with the flush upper surface and uniform density can be obtained.

Description

technical field [0001] The invention relates to a method for preparing box-type polyurethane foam, and belongs to the technical field of box-type foaming. Background technique [0002] The existing patent discloses a utility model patent for a low-VOC box foam device (publication number: 207808245 U), which provides a method of reducing the air pressure for foaming, and finally a bread-shaped foam can be obtained, which is mainly achieved by reducing the air pressure. In this way, the foaming ratio can be increased, and the use of foaming liquid can be reduced. [0003] In the process of application, the inventor found the following problems: [0004] 1. The foam is in the shape of a bread, and the middle part of the foam is convex, so that the foam in the convex part needs to be cut off during use, and then discarded, resulting in a lot of waste; [0005] 2. When the foam is used for slicing, the weight of the slices on the lower side tends to be higher, which makes the o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C44/34B29C44/60B29K75/00
CPCB29C44/34B29C44/35B29C44/60B29K2075/00
Inventor 熊凯豪熊昉
Owner 重庆丰裕宇科技有限公司
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