Packaging adhesive tape

Abstract

The invention discloses a packaging adhesive tape which is prepared by taking a polyurethane modified chlorinated polypropylene composite as a base material, wherein the polyurethane modified chlorinated polypropylene composite comprises the following raw materials in parts by weight: 100 parts of chlorinated polypropylene, 60-85 parts of a chlorinated polypropylene graft polymer, 12-24 parts of a toughened master batch, 5-20 parts of a halogen-free flame retardant, 0.5-4 parts of a coupling agent, 1-3 parts of an anti-oxidant, 2-4 parts of stearic acid, 1-3 parts of dioctyl phthalate, 0.5-2 parts of ethylene bis stearamide and 0.2-4 parts of polyethylene wax; the composite is formed by conducting graft modification on chlorinated polypropylene through polyurethane and maleic anhydride, and is used for preparing a high-performance high-molecular composite, and the finally obtained composite has relatively high abrasion resistance, weather resistance, impact resistance, corrosion resistance and high-low temperature resistance.

Description

technical field [0001] The invention relates to the technical field of packaging materials, in particular to a packaging tape. Background technique [0002] Traditional packaging tapes are made by coating solvent-based, water-soluble, hot-melt, rubber-based and pressure-sensitive adhesives on substrates such as BOPP, PET, PVC, PE (film), paper, and cloth. Under normal conditions, this type of tape can have the properties of high strength, anti-aging, anti-ultraviolet, heat resistance, cold resistance, acid and alkali resistance, corrosion resistance and other properties that tapes usually have. changes, but its performance needs to be improved. [0003] An important aspect of the research on packaging tape is the research and transformation of its base material. Among them, chlorinated polypropylene (CPP) is a chemical modification of polypropylene containing C-Cl bonds in its molecular structure. It is used in polyolefin packaging, coatings, and adhesives. , ink vehicle a...

AI Technical Summary

Problems solved by technology

However, in the process of use, CPP still has some disadvantages as follows: poor weather resistance; small molecular polarity, low bonding ability with polar materials; when used as a primer for polyolefin materials, the adhesion between the topcoat and Stress, gasoline resistance and water resistance are insufficient; when used as a primer, it has poor miscibility with other polar resins and is difficult to compound; it has poor bonding performance with polypropylene and other materials such as metals, etc.

For this reason, people try to introduce cyano, carboxyl or carboxylic acid groups into the molecular structure of CPP by graft modification to adjust the polarity of the molecule to expand the scope of use, but the overall effect is not obvious.