Preparation process of polyurethane band

A polyurethane and manufacturing process technology, which is applied in the manufacturing process field of polyurethane tapes, can solve the problems of bad waste, difficult to control, thick but not hard finished products, etc., and achieves controllability in shortening time and convenient operation. Effect

Active Publication Date: 2011-05-25
华强方特(深圳)智能技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the prior art, the manufacture of polyurethane belts adopts male and female double-sided models to press and even needs hydraulic pressure, and the operation needs to be completed in a short time. Rapid gelation is likely to cause defects or waste products are not easy to control, and the pressed finished product is thick. not hard

Method used

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  • Preparation process of polyurethane band
  • Preparation process of polyurethane band

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Embodiment Construction

[0013] The present invention will be further described below in conjunction with the embodiments.

[0014] like figure 1 As shown, a manufacturing process of a polyurethane tape, comprising:

[0015] A. Preheat the mold monohedron; under the normal indoor temperature lower than 25℃, heating equipment is required to raise the indoor temperature or mold heat above 25℃.

[0016] B. Production of synthetic prepolymer 1: Select the raw material with 40 times physical expansion to prepare the copolymer, after the preparation is completed, evenly paint a layer of copolymer on the surface of the mold, and the copolymer expands and then joins the skin and cures;

[0017] C. Production of strong dry chain body 2: After curing, it is not sticky to the hand, and then a layer of copolymer can be evenly painted, and the cut fiber cloth is spread on the copolymer, evenly painted with a brush and pressed flat, Wait for the copolymer to be evenly brushed again after the skin is free from sti...

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Abstract

The invention discloses a preparation process of a polyurethane band, which relates to a preparation process of the polyurethane band. The preparation process of the polyurethane band comprises the following steps of: A, preheating a mold monohedron; B, preparing a synthetic pre-polymer; C, preparing a dry strong chain body; D, preparing a mixture; E, preparing a solid pre-polymer; and F, preparing a bark-grafted copolymer. The requirements on compression by using a female-male double-sided model and hydraulic pressure in the prior art are eliminated, the limit of a pre-polymerized compound is eliminated, the preparation process is convenient to operate and is not limited by environmental equipment, and time controllability can be prolonged or shortened optionally.

Description

technical field [0001] The present invention relates to a manufacturing process for polyurethane tapes. Background technique [0002] In the prior art, the manufacture of polyurethane tapes adopts yin and yang double-sided models to press and even requires hydraulic pressure, and the operation needs to be completed in a very short time. The rapid gelation is likely to cause defects or the waste products are not easy to control, and the pressed finished products are thick. not hard. SUMMARY OF THE INVENTION [0003] The object of the present invention is to provide a manufacturing process of a polyurethane tape with convenient operation. [0004] The object of the present invention can be achieved by designing a manufacturing process of a polyurethane tape, comprising: [0005] A. Preheat the mold monohedron; under the normal indoor temperature lower than 25℃, heating equipment is required to raise the indoor temperature or mold heat above 25℃. [0006] B. Production of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C70/30B29K75/00B29L7/00
Inventor 李明戎志刚刘道强高敬义
Owner 华强方特(深圳)智能技术有限公司
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