38results about How to "Moderate peel strength" patented technology

The invention discloses a preparation method of anti-curling and easy-to-strip release paper for leather and belongs to the technical field of preparation of release paper. According to the method, firstly, fresh leaves of pittosporum tobira are made into granules and then mixed with a glutaraldehyde water solution for fixation, the mixture and n-hexane are stirred and heated and then are evaporated to be dried, a pittosporum tobira leaf wax concentrated solution is obtained and subjected to pulping, grinding and ultrasonic dispersion treatment with populus euphratica wood-pulp boards and deionized water, modified wood pulp dispersion size is prepared and subjected to papermaking and squeezing treatment, dried modified paper is obtained, a coating liquid is prepared from polyvinyl alcohol as a main raw material, the modified paper is coated with the coating liquid, and the anti-curling and easy-to-strip release paper for leather can be obtained after the paper is dried and cooled. A preparation process is simple, the prepared release paper for leather is moderate in strength and good in release property and doesn't easily curl in the moisture environment or under the wet condition, and a prepared leather product has good surface gloss, touches well and has broad application space.

The invention discloses a metal strip nail adhesive and a preparation method thereof, and relates to the technical field of adhesives based on resin. The metal strip nail adhesive comprises the following raw materials in percentage by weight: 8%-16% of carboxyl vinyl chloride-vinyl acetate resin with average molecular weight about 34000, 0%-8% of carboxyl vinyl chloride-vinyl acetate resin with the average molecular weight about 27000, 3.5%-5.5% of nitrile rubber, 4.5%-6.5% of epoxide resin, 2%-4% of methylhexahydrophthalic anhydride, 0.01%-1% of aluminium acetylacetonate, 0%-40% of methyl acetate and 30%-77% of acetone. The metal strip nail adhesive is prepared through pretreatment, mixing, heating and stirring. The metal strip nail adhesive disclosed by the invention has the characteristics of moderation in stripping strength, fast drying, stability in storage and easiness for operation; a strip nail adhered through the adhesive can not be cracked when being cut in a cutting procedure, or a manufactured strip nail can not be cracked when being encased and transported; and the strip nail is easy to shoot in a nail gun, high in nailing efficiency and increased in production efficiency.

The invention discloses water-based paper and plastic laminating / peelable adhesive and a method for manufacturing the same. The water-based paper and plastic laminating / peelable adhesive comprises, by mass, 35-45 parts of wax emulsion, 45-55 parts of water-based polyurethane emulsion, 1-20 parts of tackifying resin, 1-5 parts of additives, 1-5 parts of coupling agents, 0.2-0.5 part of defoamers and 0.2-0.5 part of thickeners. The water-based paper and plastic laminating / peelable adhesive and the method have the advantages that the wax emulsion, the water-based polyurethane emulsion, the additives, the tackifying resin, the coupling agents, the thickeners and the defoamers are compounded with one another to finally manufacture the water-based paper and plastic laminating / peelable adhesive, the water-based paper and plastic laminating / peelable adhesive is high-temperature-resistant and is high in initial adhesion, permanent adhesion and peel strength when used for laminating paper and plastics, the paper cannot be torn by an adhesion surface of a film when separated from the plastics, and is prevented from being damaged, and the adhesion surface is not sticky after the paper is separated from the plastics.

An optical sheet is formed by laminating, by co-extrusion molding, a first layer containing a polycarbonate resin, a second layer containing a polyamide resin, and a third layer, wherein the second layer is laminated between the first layer and the third layer, the first layer and second layer, and the second layer and third layer can each be peeled at the interface, and the outer surface of the first layer has a fine grooved structure. The optical sheet, which is provided with a plurality of layers in such a way, is capable of retaining, a sufficient amount of heat in a laminate in a mold since the entire sheet can be made thick during melt extrusion molding, and is able to improve the transferability of the fine grooved structure. In addition, the optical sheet can be made thinner by using only the peeled first layer as an optical sheet.