What is the difference between water glue and oil glue for PE protective film?
1. Water-based coating adhesive is made by emulsifying acrylic acid or polyurethane resin with water as solvent through special emulsifying equipment. Its biggest advantage is that there are many varieties, environmental protection and low price. Now many coatings are made of water-soluble glue, such: general Water-soluble PA, water-soluble PU and functional slurry such as skin film glue, oil feeling and wax feeling, scraping color slurry, etc. Water solubility will be the direction of coating in the future due to its functionality, environmental protection and low price. The disadvantage is that the film forming property is poor, the washing fastness is poor, and PU cannot be pasted with hot air glue. 2. Oily coating glue: oily coating glue is an oily solvent (Toluene, DMF, butanone, etc) As a solvent, acrylic acid or polyurethane is dissolved. Its advantages are good film-forming property, good fastness, PU can stick hot air glue, which is the commonly used coating glue at present. The disadvantage is that due to the use of oily solvents, there is a little lack of environmental protection, especially the current price increase of oil, which leads to a sharp rise in the price of oily solvents. Most of the coating adhesives are too expensive, therefore, the use of relatively poor oily solvents leads to substandard environmental protection. In addition, with the further improvement of environmental protection standards in various countries, the environmental protection requirements for coating adhesives are getting higher and higher. 3. Hot-melt pressure-sensitive adhesive hot-melt pressure-sensitive adhesive is a kind of pressure-sensitive adhesive, which is mainly heated by mixing synthetic rubber, resin, rubber oil and the like into a melt state and then coated on cotton paper, A new type of adhesive tape made on substrates such as cloth or plastic film has the greatest advantage of low cost, and the defect is that the viscosity is obviously affected by temperature. It is mainly used for all kinds of sealing boxes, sealing boxes, paper packaging, beverage bottle labels, sealing aluminum foil, flexible packaging and other packaging purposes; Environmental protection paper pallet, etc. , suitable for all kinds of materials. Sealing glue for all kinds of polishing, polishing, calendering, PP composite PET, PP transparent box, film, non-woven products bonding, cosmetic box packaging, food box packaging, cigarette box packaging, tetra Pak beverage packaging, assembling furniture edge sealing, electronic industry, automotive interior sealing, lamp manufacturing, windshield assembly, etc) Non-woven sanitary napkins, diapers, diapers, insoles, disposable daily necessities, coated composite trademark paper, label double-sided adhesive tape, sticky mouse board, sticky fly paper, wood floor, carpet glue, Band-Aid, medical breathable tape, color box packaging, carton packaging glue, adhesive tape and other difficult-to-stick materials have strong adhesion; Good thermal stability, no impurities and good operability; Excellent weather resistance; Aluminum foil sealing Hot Melt Adhesive has unique water resistance and waterproof characteristics. Hot melt pressure sensitive adhesive is a plastic adhesive. Its physical state changes with temperature in a certain temperature range, but its chemical characteristics remain unchanged. It is nontoxic and tasteless, and belongs to an environment-friendly chemical product.
