Box-type polyurethane foam preparation method

A polyurethane foam, box-type technology, applied in the field of box-type polyurethane foam preparation, can solve the problems of waste, high slice weight, inconsistent quality, etc.

Active Publication Date: 2021-07-06
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

Experimental program
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Effect test

Embodiment Construction

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

[0049] One deck release film needs to be laid in the foam box 4 (function: to facilitate the demoulding of the later stage foam).

[0050] On the basis of retaining the demoulding film laid on the bottom of the original foaming box 4, an edge-lifting film 6 that can move up and down is added in addition. This edge-lifting film 6 is annular, and matches with the inner wall of the foaming box 4 ), but the height

[0051] Simply put, the edge-lifting film 6 can move upwards under artificial control (moving to the highest height i...

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PUM

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Abstract

The invention relates to a box-type polyurethane foam preparation method, which can ensure that the foaming liquid is always in the state of constant temperature, constant pressure and constant humidity during the foaming process, ensures the quality of the foamed product, and can obtain a foam with the upper surface flush. Foam, foam with uniform density can be obtained.

Description

technical field [0001] The invention relates to a method for preparing box-type polyurethane foam, which 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 foaming by reducing the air pressure, and finally can obtain a bread-shaped foam, 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 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 inc...

Claims

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Application Information

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Patent Type & Authority Patents(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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