METHOD FOR BONDING PARTS WITH REDUCED READ-THROUGH DEFORMATION

Disclosed is a method for bonding two substrates comprising the sequential steps of- i) applying a pumpable thermally foaming filler composition on a first substrate S1, and- ii) placing the second substrate S2 so that the distance between the first substrate S1 and the second substrate S2 at the pl...

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Bibliographische Detailangaben
Hauptverfasser:	BERLI, Kurt, VOCI, Antonio, RHEINEGGER, Urs, FUNKE, Björn
Format:	Patent
Sprache:	eng ; fre ; ger
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 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:	Disclosed is a method for bonding two substrates comprising the sequential steps of- i) applying a pumpable thermally foaming filler composition on a first substrate S1, and- ii) placing the second substrate S2 so that the distance between the first substrate S1 and the second substrate S2 at the place of application of the pumpable thermally foaming filler composition is between 2 - 10 mm, and- iii) heating the first substrate S1 and the second substrate S2 to a temperature above the activation temperature of the foaming agent to foam the pumpable thermally foaming filler composition, wherein between step ii) and step iii) the applied pumpable thermally foaming filler composition is not in contact with the second substrate S2.The pumpable thermally foaming filler composition comprises at least one rubber, a polyvinylchloride resin and/or acrylic resin powder and a foaming agent. The method of bonding substrates with a thermally expandable composition provides a reduced bond line read through (BLRT) phenomenon.