Two-component polyurethane adhesives are usually composed of an isocyanate component (curing agent) containing NCO and a hydroxyl component (main agent) containing hydroxyl groups. When using, mix the two liquid components according to a certain ratio, use NCO and OH to react to form solid polyurethane, and then use the polar group of polyurethane to form
There are many binding methods available today, such as PUR (PolvurethaneReactive-polyurethane reaction), EVA (ethylenevinylacetate-ethylene acetate) hot sol, PVA (ethylene polyacetate) cooling emulsion type of different adhesive methods. In addition, there are various lock-stitch binding and so on. PUR appeared around 1989 and was first tested and applied on a manual binding system in North America.
profile wrapping adhesives Product introduction Benzene-free and aldehyde-free dark black colloid, curing at room temperature, high peel strength and low cost of use, application: suitable for particleboard, MDF board, or PVC of gypsum board, or paper veneer. How to use profile wrapping adhesives 1. Under normal circumstances, PVC wood grain film is glued on one
PUR hot melt adhesive advantages and glue box process control points PUR Hot Melt Glue, ie reactive polyurethane hot burn adhesive, whose main component is really a polyurethane prepolymer with -NCO groups. The reaction principle of PUR hot melt adhesive is as follows: after the colloid is heated and melted to be liquid and coated
What is the difference between hot melt glue and pur glue The main difference between hot melt adhesive and pur glue is the use of equipment, and the storage environment and method. PUR glue must be isolated from the air and will react with the moisture in the air. PUR hot melt adhesive is now
PUR Polyurethane reactive hot melt adhesive Advantages In the product manufacturing process and solutions of the overall home industry today, various wrap profiling are important elements, and in the profiling process, the application of adhesives is undoubtedly the top priority. winlong full line of adhesive products specially developed for profiling applications cover a variety of
PUR edge sealant PUR (Polyurethane Reactive), the full name of moisture curing reactive polyurethane hot-melt adhesive, its mechanism of action is that the polyurethane prepolymer reacts with moisture in the air to cure and crosslink to form a stable chemical structure. It has strong adhesion, high cold resistance, high heat resistance, and long storage time.
What are the differences between PUR glue and hot melt adhesive as an adhesive? The full name of PUR glue is moisture curing reactive polyurethane hot melt adhesive. It is an adhesive without any solvent/solution. It does not require a drying process like solvent-based adhesives, and it will not cause environmental pollution or poisoning problems.
