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Method for preparing bonding adhesive for plastic films
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A technology of plastic film and adhesive glue, applied in the direction of adhesive type, starch-derived adhesive, non-polymer adhesive additive, etc., can solve the problems of short service life of plastic film and poor adhesive viscosity performance. , to achieve the effect of improving anticorrosion, improving adhesion and good fluidity
Inactive Publication Date: 2018-04-03
ANHUI MENGNIU COLOR PRINTING&PACKAGING
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Abstract
Description
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Problems solved by technology
[0002] Plastic films need to use adhesives in the printing process. The performance of adhesives determines the product quality of plastic films. However, the existing adhesives are simple to prepare, and the viscosity of adhesives is poor, making plastic films The service life of the plastic film is short, so we propose a method for preparing an adhesive compound for plastic films
Method used
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Embodiment 1
[0012] The invention discloses a method for preparing an adhesive compound for plastic films, the specific preparation method of which is as follows:
[0013] 1) The raw materials are divided into components by weight: 90 parts of corn starch, 40 parts of sodium hydroxide, 3 parts of sodium hypochlorite, 0.1 part of nickelsulfate, 1 part of borax, 1 part of sodium thiosulfate, 0.2 parts of defoaming agent, and the balance is Appropriate amount of water;
[0015] 3) Put sodium hydroxide into the mixing tank and stir while adding it. The stirring reaction is carried out for 0.5 hours. During the stirring process, add the defoamer. After most of the foam disappears, replenish water in the stirring tank. It can be considered that the degree of oxidation is qualified a...
Embodiment 2
[0019] The invention discloses a method for preparing an adhesive compound for plastic films, the specific preparation method of which is as follows:
[0020] 1) The raw materials are divided into components by weight: 100 parts of corn starch, 50 parts of sodium hydroxide, 5 parts of sodium hypochlorite, 0.3 parts of nickel sulfate, 3 parts of borax, 3 parts of sodium thiosulfate, 0.4 parts of defoaming agent, and the balance is Appropriate amount of water;
[0021] 2) Put cornstarch and sodium hypochlorite into the mixing tank and stir evenly, at a speed of 300 rpm, stir for 10 minutes, then add nickel sulfate into the mixing tank, and continue stirring for 3 minutes;
[0022] 3) Put sodium hydroxide into the mixing tank and stir while adding it. The stirring reaction is carried out for 0.6 hours. During the stirring process, add the defoamer. It can be considered that the degree of oxidation is qualified after about 60 seconds;
[0023] 4) Add borax to the reaction pot du...
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PUM
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Abstract
The invention discloses a method for preparing a bonding adhesive for plastic films. The bonding adhesive is prepared from the raw materials in parts by weight: 90-100 parts of corn starch, 40-50 parts of sodiumhydroxide, 3-5 parts of sodiumhypochlorite, 0.1-0.3 part of nickelsulfate, 1-3 parts of borax, 1-3 parts of sodiumthiosulfate, 0.2-0.4 part of antifoamer and the balance of water. According to the method disclosed by the invention, the corn starch is added into the adhesive prepared by the method, and the corn starch and the sodium hypochlorite are subjected to oxidation treatment in a sodium hydroxide solution, so that the adhesive power and anticorrosive and mildewproof power of the starch are improved; on the other hand, due to an oxidation action, the degree of polymerization of starch molecules can be lowered, molecular chains of the starch molecules can be shortened, and thus, the fluidity of the prepared adhesive is good.
Description
technical field [0001] The invention relates to the technical field of adhesives, in particular to a method for preparing an adhesive compound for plastic films. Background technique [0002] Plastic films need to use adhesives in the printing process. The performance of adhesives determines the product quality of plastic films. However, the existing adhesives are simple to prepare, and the viscosity of adhesives is poor, making plastic films The service life of the film is short, so we propose a method for preparing an adhesive compound for plastic films. Contents of the invention [0003] In order to solve the defects of the prior art solutions, the invention discloses a method for preparing an adhesive compound for plastic films. [0004] The invention discloses a method for preparing an adhesive compound for plastic films, the specific preparation method of which is as follows: [0005] 1) The raw materials are divided into components by weight: 90-100 parts of corn ...
Claims
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Application Information
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