Compared to EVA hot melts, polyolefin hot melt adhesives offer a wider application range, higher heat stability, as well as improved adhesion at cold temperatures. Depending on the formulation, open times can be set from less than one second to almost one minute, or even offer an unlimited open time as a semi-adhesive. These PO-based hot melts are gaining ground to the detriment of EVA hot melt adhesives as the price of polyolefin hot melts is becoming more competitive.
Properties of Polyolefin hot melts
Adhesives based on polyolefin polymers are mainly used in prills, block or film form. They are used for laminating glue for plastic foils and metal foils where EVA hot melt adhesives lack adhesion and flexibility. Polyolefin is also extruded into heat sealable adhesive films. In addition to the base polymer Polyolefine, these hotmels usually also contain a resin (resin) and a wax (Wax)
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