METHOD AND APPARATUS FOR APPLYING HOT MELT PRESSURE SENSITIVE ADHESIVE TO A HEAT SENSITIVE WEB

• Main Authors: THORSON, RUSSELL EVAN, SALLEE, LORRY FRANCIS
• Format: Patent
• Language: English
• Published: 23.09.1987
• Edition: 4
• Subjects: ACCESSORIES; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; ADHESIVES; APPARATUS FOR APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TOSURFACES, IN GENERAL; APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL; BANDAGES, DRESSINGS OR ABSORBENT PADS; CHEMISTRY; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF,TUBULAR STRUCTURES OF THE BODY, E.G. STENTS; DYES; FILTERS IMPLANTABLE INTO BLOOD VESSELS; FIRST-AID KITS; FOMENTATION; HATS; HEAD COVERINGS; HEADWEAR; HUMAN NECESSITIES; HYGIENE; MEDICAL OR VETERINARY SCIENCE; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; OUTERWEAR; PAINTS; PERFORMING OPERATIONS; POLISHES; PROSTHESES; PROTECTIVE GARMENTS; SPRAYING OR ATOMISING IN GENERAL; TRANSPORTING; TREATMENT OR PROTECTION OF EYES OR EARS; USE OF MATERIALS AS ADHESIVES; WEARING APPAREL

Apparatus and method for applying a hot melt adhesive to a web of heat sensitive material in which the adhesive is heated and extruded in a continuous flat bead having a substantially rectangular cross-section onto a rotating chill roll, cooled, contacted by a web of heat sensitive material and thereafter pressed together so that the adhesive conforms to the web material and bonds thereto, and the bonded adhesive and web stripped from the chill roll.