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Foaming mold cleaning adhesive tape without carcinogenic, mutagenic or reproductive toxic components

A reproductive toxicity and mutagenic technology, applied to other household appliances, household appliances, household components, etc., can solve the problems of not clearly avoiding the use of CMR substances, safety, and easy to fly into the air, so as to achieve good mold cleaning effect and increase rubber Effect of internal pressure and easy ejection

Active Publication Date: 2021-05-28
TECORE SYNCHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, other components such as fillers, etc., are also easy to fly into the air during the production process of the mold cleaning strip, which brings safety problems
Similarly, none of the previous traditional technologies clearly avoided the use of CMR substances

Method used

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  • Foaming mold cleaning adhesive tape without carcinogenic, mutagenic or reproductive toxic components

Examples

Experimental program
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Effect test

preparation example Construction

[0051] The second aspect of the present invention provides the preparation method of the foam cleaning strip without carcinogenic, mutagenic or reproductive toxic mold cleaning agent as described above, which comprises the following steps:

[0052] (1) Put EPDM rubber and butadiene rubber into the internal mixer and masticate for 2 minutes, then add filler, mold cleaning agent, mold release agent and auxiliary agent and mix for 3 minutes;

[0053] (2) Add foaming agent, curing agent and foaming aid to the above system and mix to 100°C for debinding to obtain the mixed rubber;

[0054] (3) extruding, calendering and cutting the above-mentioned compounded rubber to obtain the mold-cleaning rubber strip.

Embodiment

[0056] The present invention is specifically described below by way of examples. It is necessary to point out that the following examples are only used to further illustrate the present invention, and can not be interpreted as limiting the protection scope of the present invention, some non-essential improvements made by those skilled in the art according to the content of the present invention above And adjustments still belong to the protection scope of the present invention. The following is the table of examples, which are prepared according to the following method: put the raw rubber into an internal mixer and masticate for 2 minutes, then add fillers, mold clearing agents, mold release agents, and pigments and mix for 3 minutes, and mix foaming agent and vulcanizing agent. Refining to 100°C for debinding to obtain rubber compound. Further extruding, calendering and cutting the compounded rubber to obtain mold-cleaning rubber strips.

[0057] Table 1 embodiment form (ea...

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PUM

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Abstract

The invention relates to the technical field of electronic packaging mold cleaning, in particular to a foaming mold cleaning rubber strip free of carcinogenic, mutagenic or reproductive toxic components. Preparation raw materials do not belong to CMR components; The preparation raw materials comprise, by weight, 20-40 parts of ethylene propylene diene monomer, 50-80 parts of butadiene rubber, 0.5-6 parts of a foaming agent, 40-85 parts of a filler, 3-10 parts of a mold cleaning agent, 0-15 parts of a mold release agent, 1-5 parts of an auxiliary foaming agent and 1-3 parts of a curing agent; and the preparation raw materials do not belong to the CMR components. The preparation raw materials of the foaming mold cleaning rubber strip do not contain the components belonging to CMR, and contain the foaming agent, so that the internal pressure of rubber can be increased during mold pressing and mold cleaning, seepage of the mold cleaning agent is facilitated, and a vulcanized rubber sheet is high in shrinkage rate and easy to separate from a mold. In addition, by regulating and controlling components and proportions of the mold cleaning agent, the mold release agent, the foaming agent and the like, the foaming mold cleaning rubber strip which is good in mold cleaning effect and good in mold release operability is prepared.

Description

technical field [0001] The invention relates to the technical field of electronic packaging mold cleaning, in particular to a foam mold cleaning adhesive strip that does not contain carcinogenic, mutagenic or reproductive toxic components. Background technique [0002] During injection molding or compression molding of plastics, rubber, epoxy resins, composite materials, etc., residues generated by heating molding materials are easy to adhere to the surface of the mold, such as exudates on the surface of the product, release agents, volatiles, etc. Classification, the mold often produces different degrees of pollution due to repeated operations on the working surface, which not only damages the appearance quality of the product, but also affects the output, and also causes mold corrosion. Regularly clean the mold and develop efficient, cheap, and pollution-free mold cleaning Technology is increasingly necessary. [0003] Due to the adhesion of epoxy resin to the metal layer...

Claims

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Application Information

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IPC IPC(8): B29C33/72B29C69/00C08L9/00C08L23/16C08K13/04C08K7/26C08K5/09C08K5/5425C08K5/20C08J9/10B29L31/34
CPCB29C33/72B29C48/0012B29C48/0011B29C48/0022C08J9/103C08J9/0061C08J9/0066C08J9/0023C08J9/0028C08J9/0042C08J9/0095B29L2031/34C08J2203/04C08J2309/00C08J2423/16C08K13/04C08K7/26C08K5/09C08K5/5425C08K5/20
Inventor 胡肖霞杜茂松
Owner TECORE SYNCHEM
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