The difference and contrast between water glue, oil glue and hot melt glue

The difference and contrast between water glue, oil glue and hot melt glue

Water based coating adhesive is made by emulsifying acrylic acid or polyurethane resin with water as solvent through special emulsification equipment. Its biggest advantage is: many varieties, environmental protection, low price, now there are many coatings are water-soluble adhesive, such as: General water-soluble PA, water-soluble Pu, as well as film adhesive, oil-sensitive wax, scraping paste and other functional size. Water solubility, with its function, environmental protection and low price, will be the direction of coating in the future. The disadvantages are poor film-forming, poor washing fastness, Pu can not be pasted with hot air adhesive.

Oily coating adhesive is made by dissolving acrylic acid or polyurethane with oily solvent (toluene, DMF, butanone, etc.) as solvent. Its advantages are good film-forming property, good fastness, Pu can stick hot air adhesive, which is the coating adhesive commonly used at present. The disadvantage is that due to the use of oily solvent, there is a lack of environmental protection. Especially now, the price of oil solvent is rising sharply. Most of the coating adhesive costs too much, so poor oil solvent is used, resulting in environmental protection not up to standard. In addition, with the further improvement of environmental protection standards in various countries, the environmental protection requirements of coating adhesive are higher and higher.

Hot melt pressure-sensitive adhesive is a kind of pressure-sensitive adhesive. It is a new type of adhesive tape which is mainly composed of synthetic rubber, resin and rubber oil mixed and heated into melting state and then coated on cotton paper, cloth or plastic film and other substrates. The low cost is its biggest advantage, and the defect is that the viscosity is obviously affected by temperature. It is mainly used for all kinds of sealing boxes, paper packaging, beverage bottle labels, sealing aluminum foil, soft packaging and other packaging; environmental paper pallet, etc., suitable for all kinds of materials. Case sealing glue is used for bonding all kinds of pet, PP transparent box, film, non-woven fabric products such as glazing, polishing, calendering, PP composite, cosmetics box packaging, food box packaging, cigarette box packaging, Tetra Pak beverage packaging, assembling furniture edge sealing, electronic industry, automobile interior sealing, lamp manufacturing, windshield assembly, etc.), non-woven sanitary napkins, diapers, diapers, insoles, disposable Flexible products, coated composite trademark paper, double-sided label tape, mouse board, fly paper, wood floor, carpet over glued, band aid, medical ventilation tape, color box packaging, carton packaging adhesive, adhesive tape on the back and other sticky materials have strong adhesion; good thermal stability, no impurities, good operability; excellent weather resistance; aluminum foil sealing hot melt adhesive has unique water-resistant and waterproof characteristics.