Adhesive bonding and miscellaneous chemical manufacture – Methods – Surface bonding and/or assembly therefor
Patent
1996-10-16
1999-04-06
Crispino, Richard
Adhesive bonding and miscellaneous chemical manufacture
Methods
Surface bonding and/or assembly therefor
1563066, 1563069, 1563096, 156313, 264321, 264511, B29C 6720, B32B 3120, C09J 700
Patent
active
058912932
ABSTRACT:
In a method for bonding a foam-fabric composite to a molded foam core, particularly suitable for use as an automotive cushion assembly, specific advantageous polymeric MDI-based foams are used to achieve consistently excellent bond strength. In the method, a foam layer is flame laminated to a fabric layer. Then the foam-fabric laminate and an air impervious adhesive film are placed over a mold surface, and the adhesive is drawn against the foam of the foam-fabric laminate and the fabric layer is urged against the mold surface by applied vacuum. The foam core pad is placed adjacent to the adhesive film. The film is heated and diffused into the foam pad and into the foam of the foam-fabric laminate, respectively, and allowed to cure. The foam layer laminated to the fabric is formed as the reaction product of a polyether polyol or a graft polyether polyol with from about 30 to about 60 parts by weight of an MDI or a polymeric MDI/TDI blended isocyanate or mixtures thereof, from about 1.5 to 3.0 parts by weight water as blowing agent, from about 0.05 to about 0.20 parts by weight tin catalyst, from about 0.15 to 0.90 parts by weight amine catalyst and from about 0.5 to about 1.5 parts by weight silicone surfactant, wherein all amounts are based on 100 parts by weight polyol.
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Haslanger Paul
Kelly David J.
Crispino Richard
Foamex L.P.
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