How to use pu adhesive?
Pu glue, namely polyurethane glue, is a two-component adhesive made of resin and emulsion pre-polymerization. Mainly used for wood, aluminum, color steel plate and metal, polystyrene foam bonding. Good adhesive strength, no organic solvent, excellent heat resistance. The product can be cured at room temperature or by heating. In the final analysis is the plastic that we often say in our life, so how to use PU adhesive?
Pu glue, namely polyurethane glue, is a two-component adhesive made of resin and emulsion pre-polymerization. Mainly used for wood, aluminum, color steel plate and metal, polystyrene foam bonding. Good adhesive strength, no organic solvent, excellent heat resistance. The product can be cured at room temperature or by heating. In the final analysis is the plastic that we often say in our life, thenPU adhesiveHow to use it?
PU glue is also called bottom glue, molding glue, the industry is also known as "white glue". Its chemical name is polyurethane resin. Polyurethane is widely used in synthetic leather and shoe materials. PVC, TPR, rubber, synthetic leather and other PU material bonding, high bonding strength. The aliphatic polyurethane adhesive does not turn yellow, has excellent high and low temperature resistance, hydrolysis resistance and aging resistance, and is easy to coat. Thermosetting polyurethane adhesive is a non-toxic product. The adhesive strength and heat resistance of PU are also perfect. After curing, the polyurethane adhesive will not turn yellow, no ripples and bubbles. It has good transparency, excellent high and low temperature resistance, hydrolysis resistance and aging resistance, and is a non-toxic product after thermal curing. PU is an anionic waterborne polyurethane dispersion, which is basically harmless to the human body's inhalation, respiratory system and nerve center.
What is the use of PU adhesive?
Can be used in shoes, automobiles, furniture, construction industry and other fields. Because it is an anionic aqueous polyurethane dispersion and a heat-activated adhesive; it is mainly suitable for the bonding of wood, aluminum plate, steel plate, metal, and polystyrene foam; at present, materials with high oil content and high tension are not suitable for PU glue. Must be treated before use; the combination. PU, TPR, rubber, mesh, leather and other shoe materials. Suitable for adhesives, PVC film, silica gel, plastic, glass, metal and other trademarks; especially suitable for anti-ultraviolet dripping glue; also very suitable for hard materials, such as nylon and other materials with dense surface structure. After professional treatment, can be applied. Another kind of PU glue is PU injection molding, which is an elastomer. Through pouring, the iron end cover and rubber sealing ring of the air filter element are omitted, which is an ideal product for producing pull-type air filters.
After testing, pu glue does not contain organic solvents, is not flammable and explosive, and relatively reduces environmental pollution; high bonding strength, wide application range, simple and convenient operation; super saving, reducing waste, saving both chemicals and labor, saving a lot of investment in environmental protection facilities, etc. Tested by the National Center for Disease Control and Prevention as a non-toxic product, contact and inhalation will not be harmful, do not worry about this when using. Although there are many types of pu glue, it can be used not only in life, but also in industry. Now many of our daily necessities use pu glue, universal glue is also a kind of pu glue. 4
Before each glue injection, the glue barrel A (generally 200KG/barrel) must be fully rolled to make the glue A uniform, and the material temperature should be controlled at 24-28, and then the machine should be started. The mold must be wiped with a mold release agent before use (note: new plastic molds do not need to be wiped). If the reaction between substances A and B is insufficient, measure the ratio of substances A and B.
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