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A special glue for corrugated cardboard
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A corrugated cardboard and glue technology, applied in the direction of adhesives, epoxy resin adhesives, unsaturated alcohol copolymer adhesives, etc., can solve the problems of high cost, long preparation time, multiple raw materials, etc. The effect of high strength, improving waterproof strength and impact strength
Active Publication Date: 2020-07-31
安徽金田彩印包装有限公司
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Abstract
Description
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Problems solved by technology
Its preparation process is more complicated, requires more raw materials, high cost, long preparation time, consumes more manpower and material resources, and the viscosity of the prepared adhesive is not high
[0003] Most of the existing glues used for cardboard focus on viscosity, and there are few studies on the waterproof and anti-collision performance of glue
Method used
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Examples
Experimental program
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Effect test
Embodiment 1
[0022] Preparation of glue A: Add 12 parts of bisphenol A epoxy resin, 4 parts of polyvinyl alcohol, 2 parts of modified starch, add an appropriate amount of deionized water, mix and stir evenly.
[0023] Preparation of B glue:
[0024] (1) Add 100 parts of deionized water and 6 parts of sodium hydroxide into the reactor, stir at 35°C for 30 minutes, then add 60 parts of modified starch, raise the temperature to 60°C and continue stirring for 2 hours to obtain a starch solution;
[0025] (2) Add 6 parts of stabilizer, 7 parts of organic bentonite, and 3 parts of borax to 12 parts of polyethylene glycol 400, react in a colloid mill at 35°C for 1 hour, and obtain a mixed emulsion;
[0026] (3) Add the mixed emulsion to the starch solution in step 1, stir at 50°C for 40 minutes, at 90°C for 50 minutes, at 30°C for 30 minutes, and keep it at 25°C for 2 hours.
[0027] Preparation of modified starch: Weigh 60 parts of potato starch, prepare 40g / 100mL starch milk with distilled wat...
Embodiment 2
[0030] Preparation of glue A: Add 12 parts of bisphenol A epoxy resin, 4 parts of polyvinyl alcohol, 2 parts of modified starch, add an appropriate amount of deionized water, mix and stir evenly.
[0031] Preparation of B glue:
[0032] (1) Add 100 parts of deionized water and 6 parts of sodium hydroxide into the reactor, stir at 35°C for 30 minutes, then add 60 parts of modified starch, raise the temperature to 60°C and continue stirring for 2 hours to obtain a starch solution;
[0033] (2) Add 8 parts of stabilizer, 6 parts of organic bentonite, and 3 parts of borax to 14 parts of polyethylene glycol 400, and react in a colloid mill at 35°C for 1 hour to obtain a mixed emulsion;
[0034] (3) Add the mixed emulsion to the starch solution in step 1, stir at 50°C for 40 minutes, at 90°C for 50 minutes, at 30°C for 30 minutes, and keep it at 25°C for 2 hours.
[0035] Preparation of modified starch: Weigh 60 parts of corn starch, prepare 40g / 100mL starch milk with distilled wat...
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PUM
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Abstract
The invention relates to the technical field of glue and discloses special glue for corrugated boards. The glue is composed of glue A and glue B; the glue A is prepared from, by mass, 10-15 parts of epoxy resin, 1-5 parts of polyvinyl alcohol and 1-3 parts of modified starch; the glue B is prepared from, by mass, 90-100 parts of deionized water, 50-60 parts of modified starch, 5-10 parts of sodiumhydroxide, 5-10 parts of a stabilizing agent, 5-10 parts of organic bentonite, 1-5 parts of borax and 10-15 parts of polyethylene glycol 400. The glue is high in adhesiveness, and waterproof strengthand impact strength of the corrugated boards are improved by the glue B attached outside the glue A.
Description
Technical field: [0001] The invention relates to the technical field of glue, in particular to a special glue for corrugated cardboard. Background technique: [0002] At present, the online sales of various commodities are booming, which drives the development of the transportation industry. However, the requirements for packaging cardboard used for packaging products during transportation are getting higher and higher, especially in terms of waterproof, anti-collision and adhesion. For example, the patent application number: 201010222280.2 discloses a starch adhesive for producing corrugated cardboard and its preparation method. The process steps of the preparation method are: ① preparation of starch suspension; ② adding catalytic desiccant; ③ oxidation; ④ gelatinization ; ⑤ cross-linking; ⑥ modification; ⑦ defoaming. Its preparation process is relatively complicated, requires more raw materials, has high cost, takes a long time for preparation, consumes more manpower and...
Claims
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Application Information
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