At present, according to the adhesive and process of coating selection on the market, it is generally divided into cold adhesive coating and PUR hot melt adhesive coating.    

What is cold glue?    

The cold glue used in the coating process is usually solvent-based glue, and the commonly used diluent cannot avoid its harmful substances such as formaldehyde and benzene. Friends who have been to the cold adhesive coating production site have the deepest impression is the irritating taste of the glue emitted during the coating process. Cold adhesive coating is actually through the solvent on the coated substrate surface of the subtle corrosion to achieve adhesion with the substrate, so its environmental protection in the coating industry is public, in the national standard allowed range of use is understandable, but the status quo is filled with a variety of cold adhesive and solvent products on the market and how many can really meet the national standard?    

What is PUR Hot glue?    

Polyurethane Reactive hot melt adhesive PUR(Polyurethane Reactive) is called wet curing reactive polyurethane hot melt adhesive in Chinese. Reactive hot melt adhesive is to melt solid into fluid under the condition of inhibiting chemical reaction in order to facilitate coating; The two adhesive layers condense and play a bonding role after being bonded and cooled. Then, by means of the moisture in the air and the moisture attached to the surface of the sticky body, it reacts with it, expands the chain, and generates a high polymer with high cohesion. Its adhesion and toughness (elasticity) can be adjusted, and has excellent bonding strength, temperature resistance, chemical resistance and aging resistance.    

PUR hot melt adhesive coating VS Cold adhesive coating

Kloffer, the intelligent manufacturer of high-quality automatic solutions for high quality veneer equipment, some PUR hot rubber coating equipment is as follows: