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Adhesive special for stickers and preparation method of adhesive
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An adhesive and sticker technology, applied in the direction of adhesives, adhesive types, starch adhesives, etc., can solve the problems of poor water resistance and moisture resistance, decreased bonding strength, large equipment investment, etc., and achieves good water and weather resistance. The effect of strong combined force and high viscosity
Inactive Publication Date: 2018-08-07
GANZHOU JINDONGMEN CHEM
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Problems solved by technology
[0003] The so-called white latex is polyvinyl acetateemulsion. Due to the complicated preparation and operation process, large investment in equipment, and the high price of vinyl acetatemonomer, the production cost of white latex is relatively high.
The disadvantages of polyvinyl acetate emulsion adhesives are poor water resistance and moisture resistance, easy to absorb moisture in humid air, and creep phenomenon will occur when used at high temperature, which will reduce the bonding strength; it is easy to freeze when stored below -5°C, causing the emulsion to be damaged. destroy
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preparation example Construction
[0020] The preparation method of special adhesive for stickers comprises the following steps:
[0021] (1) Put 60% to 90% water into the reactor, turn it on and stir, add polyvinyl alcohol 2699, polyvinyl alcohol 2099, polyvinyl alcohol 1799, and defoamer at the same time, and start to heat up and dissolve;
[0022] (2) Heat up to 95-98°C to stop the temperature rise and keep warm for 10 minutes. After the polyvinyl alcohol is completely dissolved, add aldehyde groups and part of the water;
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Abstract
The invention relates to the field of building materials and provides an adhesive special for stickers and a preparation method of the adhesive. The adhesive comprises, by mass, 1360 parts of water, 110 parts of corn starch, 80 parts of polyvinyl alcohol 2699, 70 parts of polyvinyl alcohol 2099, 20 parts of polyvinyl alcohol 1799, 190 parts of potato starch, 16 parts of hydrogenchloride, 38 partsof aldehyde group, 2 parts of defoaming agent and 4 parts of preservatives. The adhesive has the advantages that adhesive specially researched and developed for the labels, nameplates and the like ofhome and machines uses PVA as the main raw material and is nontoxic, free of odor and harmless to human bodies; the home environment of a user can be kept harmonious and healthy; the adhesive is fastin drying, high in adhesive force, high in viscosity, good in water resistance and weather resistance and capable of achieving environment-friendly adhering; the adhesive has various application manners such as direct adhering, diluting with water, natural drying and heating drying.
Description
technical field [0001] The invention relates to the field of wood adhesives, in particular to a special adhesive for stickers and a preparation method thereof. Background technique [0002] White latex is one of the water-soluble adhesives with the widest application, the largest amount, and the longest history. It is a thermoplastic adhesive prepared by polymerization of vinyl acetatemonomer under the action of an initiator. It can be cured at room temperature, cured quickly, and has high bonding strength. The bonding layer has good toughness and durability and is not easy to age. [0003] The so-called white latex is polyvinyl acetateemulsion. Due to the complicated preparation and operation process, large investment in equipment, and the high price of vinyl acetatemonomer, the production cost of white latex is relatively high. The disadvantages of polyvinyl acetateemulsion adhesives are poor water resistance and moisture resistance, easy to absorb moisture in humid a...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information
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