Free-flowing pressure sensitive adhesives

Hot melt adhesive consisting of a pressure sensitive adhesive comprising at least one polymer selected from polyester, polyacrylate, polyolefin, polyurethane, ethylene vinyl acetate polymers, styrene blockcopolymers or mixtures, at least one tackifier and additives the adhesives having the form of p...

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Bibliographische Detailangaben
Hauptverfasser:	KRATZGUNTHER, PETRY, GERALD, DUCKWORTH, DAVID, PUERKNERECKHARD, BURGSMUELLER, MILAN
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY MAKING GRANULES OR PREFORMS PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL PREPARATION OR PRETREATMENT OF THE MATERIAL TO BESHAPED RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIALCONTAINING PLASTICS SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS THEIR RELEVANT APPARATUS TRANSPORTING WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Beschreibung
Zusammenfassung:	Hot melt adhesive consisting of a pressure sensitive adhesive comprising at least one polymer selected from polyester, polyacrylate, polyolefin, polyurethane, ethylene vinyl acetate polymers, styrene blockcopolymers or mixtures, at least one tackifier and additives the adhesives having the form of pellets, each pellet of adhesive has an outer shell of a film forming material, whereby i)the adhesive has a softening point of 80 to 150 °C and has at 25°C a tacky surface, ii) the film forming material is a thermoplastic polymer with a melting point of less than 120 °C, iii) each pellet being completely surrounded by the film material, so that the pellets have a non-blocking surface and are free flowing at a temperature of less then 45°C. Such pellets can be used as feed for automated feeder devices for the supply hot melt application systems.