A kind of polyurethane synthetic resin for preparing non-trace adhesive tape and non-trace adhesive tape prepared by using it

Abstract

The invention belongs to the technical field of glue stickers, and in particular relates to polyurethane synthetic resin for preparing a traceless glue sticker. The polyurethane synthetic resin comprises the following raw materials in parts by weight: 20-65 parts of polyether polyol resin, 5-10 parts of acrylic resin, 3-5 parts of unsaturated polyester resin, 1-3 parts of phenol formaldehyde resin, 1-2 parts of polycarbonate, 0.5-1 part of natural resin, 2-5 parts of amino resin, 3-5 parts of epoxy resin, 5-8 parts of organic silicon resin, 3-5 parts of isocyanate, 10-30 parts of a curing agent, 2-5 parts of a thickening agent and 0.3-0.8 part of a leveling agent. The invention provides the polyurethane synthetic resin with good sticking effect, good high and low temperature resistance, aging resistance and yellowing resistance, and traceless sticking for preparing the traceless glue sticker.

Description

technical field [0001] The invention relates to the technical field of stickers, in particular to a polyurethane synthetic resin for preparing non-marking stickers and the non-marking stickers prepared by using the polyurethane synthetic resin. Background technique [0002] There are mainly two types of existing stickers, SEBS (TPR) artificial rubber system stickers and hot-melt pressure-sensitive adhesive system stickers. [0003] The first type of SEBS (TPR) artificial rubber, because it does not have long-term effective surface viscosity, so it must be dissolved into a liquid at high temperature during the preparation process before adding white oil and white oil tackifier, but white oil and white oil increase If the adhesive is added too much, it will be difficult to cure, and the surface will leak oil when pasting, so that the effect of seamless pasting cannot be achieved. Therefore, the sticking force of SEBS (TPR) artificial rubber system stickers has great limitation...

AI Technical Summary

Problems solved by technology

[0003] The first type of SEBS (TPR) artificial rubber, because it does not have long-term effective surface viscosity, so it must be dissolved into a liquid at high temperature during the preparation process before adding white oil and white oil tackifier, but white oil and white oil increase If the adhesive is added too much, it will be difficult to cure, and the surface will leak oil when pasting, so that the effect of seamless pasting cannot be achieved. Therefore, the sticking force of SEBS (TPR) artificial rubber system stickers has great limitations, and the aging resistance is not enough. , the original surface viscosity will be lost in a short period of time after ultraviolet light irradiation, so the scope of use is limited

[0004] The second type of hot-melt pressure-sensitive adhesive system stickers, the resin system is semi-solid or solid, containing synthetic rubber, pressure-sensitive resin and rubber oil, mixed and heated into a molten state before coating, because the molten state is thicker and Severe wire drawing, yellowish colloid, not transparent enough, not easy to coat, and the coating thickness error is large, surface flatness is not good, aging resistance, temperature resistance is insufficient, the most important thing is that the hot melt pressure sensitive adhesive system sticks for a long time There will be glue remaining on the surface of the adhered object, so the effect of truly seamless paste cannot be achieved

[0005] Disadvantages of existing adhesive stickers: poor sticking effect, small adjustability of surface viscosity, insufficient high and low temperature resistance, aging resistance, and yellowing resistance, residual glue remains on the surface of the adhered object, and the product thickness error is large

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