A method of bonding polyolefin substrates

A method of bonding a first polyolefin substrate to a second substrate comprising the steps of: (a) providing an amount of an exothermically curable composition which generates an exotherm of at least 65°C desirably at least 70°C, within 15 seconds and desirably within 10 seconds; (b) creating an as...

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Bibliographische Detailangaben
Hauptverfasser:	Brian Deegan, Brendan J Kneafsey
Format:	Patent
Sprache:	eng
Schlagworte:	ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE ADHESIVES AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING CHEMISTRY COMPOSITIONS BASED THEREON DYES GENERAL PROCESSES OF COMPOUNDING LAYERED PRODUCTS LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL ORGANIC MACROMOLECULAR COMPOUNDS PAINTS PERFORMING OPERATIONS POLISHES SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS THEIR PREPARATION OR CHEMICAL WORKING-UP TRANSPORTING USE OF MATERIALS AS ADHESIVES WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL WORKING-UP
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Beschreibung
Zusammenfassung:	A method of bonding a first polyolefin substrate to a second substrate comprising the steps of: (a) providing an amount of an exothermically curable composition which generates an exotherm of at least 65°C desirably at least 70°C, within 15 seconds and desirably within 10 seconds; (b) creating an assembly comprising the first polyolefin substrate and the second substrate with the amount of the exothermically curable composition positioned in a bond area between the substrates; (c) curing the amount of the exothermically curable composition to generate an exotherm of at least 65°C desirably at least 70°C, within 15 seconds and desirably within 10 seconds; so that the exothermically curable composition bonds to the polyolefin due to softening of the polyolefin within the bond area as a result of the exotherm. The polyolefins are selected from polyethylene, polypropylene, polybutylene, polymethylepentene, polyisobutylene and ethylene containing rubbers. Most preferably the polyolefins to be bonded are polyethylene or polybutylene or blends thereof.