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Haicheng Jinming Chemical Fiber Co., Ltd.

Contact person: Manager Zhao

Tel: 0412-3826499

Mobile phone: 18641207868

Fax: 0412-3839628

Website: en.hc-jinming.com

Address: No. 3 Liuzhong Road, Xiliu Industrial Park, Haicheng, Liaoning Province


Composition and Formulation of Hot Melt Cotton

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Composition and Formulation of Hot Melt Cotton

Date:2016-05-26 00:00 Source:http://en.hc-jinming.com Click:

The main components of hot melt cotton are styrene thermoplastic elastomers. The advantages of hot melt cotton are solvent-free, air pollution-free and high productivity. But the disadvantage is lack of heat resistance and cohesion. New thermoplastic elastomers, such as SEBS, SEPS and epoxidized SBS, are used to prepare high performance hot melt cotton. The New Acrylate block copolymer has good heat resistance, oxidation stability, UV stability, good adhesion to HDPE, stainless steel, glass, polystyrene, acrylic board, polycarbonate, nylon, polypropylene and other materials, and can be used to make medical tapes, transparent films, labels and so on. Acrylic acid polymer and water-soluble polymer are used to make hot-melt pressure-sensitive adhesive hot-melt cotton which can be dispersed in water. Acrylic acid polymer is dispersed in weak alkali water solution into non-adhesive particles less than 100 microns. It is easy to separate and suitable for recycling old paper. Acrylate monomer containing benzophenone group was copolymerized to obtain acrylic acid copolymer with low Tg. Hard cotton was used as hot melt pressure sensitive adhesive. It was easy to cross-link under UV irradiation. It had the advantages of no photoinitiator and no residual problem of initiator. It could be hot-melt coated at low temperature (120-140 C). It had low VOC, low odor, no skin irritation and good thermal stability.




Composition of Pressure Sensitive Adhesive




Spray-bonded cotton is a special type of adhesives. It is used to process the glue onto the base material into ribbons and rolls. Pearl cotton includes solvent-activated adhesive tape, heating adhesive tape and pressure-sensitive adhesive tape. For example, rubber paste and electrical insulating glue, i.e. down cotton, which are commonly used in medicine, belong to pressure sensitive adhesive tape.




Composition of Pressure Sensitive Adhesive Tape




Pressure-sensitive adhesives




Substrate




(3) Bottom treatment agent




(4) Back treatment agent




Isolation paper




The main components of needle punched cotton include rubber type and resin type, such as polyacrylate or polyvinyl ether, with uniform base material, small flexibility and good solvent infiltration, including: (1) fabrics such as cotton cloth, glass cloth or non-woven cloth, (2) plastic films such as PE, PP, PVC and polyester film, (3) paper such as kraft paper, glass transparent paper, etc., with a base material of 0.1-0.5mm. Between.




The function of the bottom treatment agent is to increase the adhesion strength between the adhesive and the base material, so that when the adhesive tape is removed, it will not cause the adhesive to detach from the base material and stain the adhered surface, and make the adhesive tape reusable. Commonly used bottom treatment agents are chloroprene rubber partially vulcanized by isocyanate and chlorinated rubber modified.




The backside treatment agent of spray-bonded cotton manufacturer is usually made up of polyacrylate, PVC, cellulose derivatives or organosilicon compounds. Pearl cotton manufacturer can act as an isolator. If double-sided adhesive tape needs to be added a layer of isolation paper such as semi-rigid PVC film, PP film or kraft paper.




Adhesion properties of pressure sensitive adhesives




Pressure-sensitive adhesives can be bonded by finger pressure without heating. They are a kind of adhesive with peeling strength. Their adhesion characteristics are as follows: cohesive strength of T (fast adhesive force) adhesive layer and adhesion force between adhesive and base material.




Compatibility of Pressure Sensitive Adhesive




1. Pressure-sensitive adhesives for natural rubber matrix: down cotton manufacturers such as medical rubber paste and electrical insulation tape.




2. Pressure-sensitive adhesives for synthetic rubber matrix: commonly used styrene-butadiene rubber, polyisobutylene and base rubber as the main components, needle-punched cotton manufacturers such as transparent pressure-sensitive belt are polyisobutylene elastomer polymer and semi-liquid mixed in a certain proportion and coated on transparent substrates.




3. Polyolefin pressure sensitive adhesive tape. Polyvinyl phenyl ether and polyacrylate are two main types.

Hot melt cotton

Tag:Hotmeltcotton

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