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Method for producing polyurethane adhesive plaster

A production method, the technology of polyurethane adhesive layer, applied in the production field of polyurethane adhesive tape, can solve the problems of long production process, high investment in equipment, poor quality of finished adhesive tape, etc., and achieve the effect of reducing equipment investment and shortening the production process

Active Publication Date: 2009-07-22
北京燕阳新材料技术发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The shortcomings of this production method are: (a) the quality of the finished adhesive tape is poor, and the peel strength between the polyurethane adhesive layer and the dipped base cloth weaving layer is not high, and it is generally difficult to exceed 200N / 25mm; (b) the production The process is longer, and (c) equipment investment is higher

Method used

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  • Method for producing polyurethane adhesive plaster
  • Method for producing polyurethane adhesive plaster
  • Method for producing polyurethane adhesive plaster

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Experimental program
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Embodiment Construction

[0011] Process flow of the present invention is:

[0012]

[0013]

[0014] Combine below figure 1 The present invention is further described.

[0015] (1) After unwinding the dipped base cloth 1, the dipped base cloth is dried in an oven 2, and the temperature of the oven is 80-110°C.

[0016] (2) Polyurethane and color masterbatch are proportioned according to the color requirements of the product. After being dried in a dehumidifier 7 with a temperature of 70-110° C., they enter two extruders 6 at the same time.

[0017] (3) The cylinder barrel of the extruder adopts an electric heating temperature control device, and the mold 5 is heated by internal heating, and the temperature is controlled within the range of 160-200°C. The heating temperature of each mold 5 is controlled separately, so that the degree of plasticization of polyurethane and the distribution and flow rate in the mold can be controlled more stably.

[0018] (4) The polyurethane is evenly distribute...

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Abstract

The present invention relates to a production method of polyurethane adhesive tape. The method of the present invention is realized by the following technical solutions: using two extruders to supply materials to two molds respectively, and extruding the polyurethane fluid through the molds; Through the extrusion of the die, the polyurethane adhesive layer is simultaneously formed on both sides of the dipped base cloth. The method of the invention can greatly improve the peeling strength between the polyurethane adhesive layer and the dipping base cloth in the polyurethane adhesive cloth, and can also shorten the production process and reduce equipment investment.

Description

technical field [0001] The invention relates to a production method of an adhesive plaster, in particular to a production method of an adhesive plaster coated with a thermoplastic polyurethane elastomer. Background technique [0002] The production method of the polyurethane adhesive cloth in the prior art is to adopt the method of once coating one side of the fabric, and then turning over the fabric after forming to coat the other side. This production method generally consists of two steps. The first step is to uniformly coat the polyurethane fluid formed after the polyurethane raw material is heated and melted on one side of the dipped base cloth through the coating head, thereby forming polyurethane fluid on the surface. glue layer. The principle of the second step is the same as that of the first step, except that the heated and melted polyurethane fluid is evenly coated on the other side of the dipped base cloth through the coating head, thereby forming a polyurethane...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06N3/14
Inventor 董安礼陈恩祥董凡刘艳秀姬惠元郭良印安康
Owner 北京燕阳新材料技术发展有限公司