초록 ▼

The present invention relates to a multiple-layered composition which eliminates the metal cover plate and is useful for effectively and durably sealing and plugging drain holes in workpieces. They are particularly useful in covering up drain holes in automotive bodies as a result of the unique prop

The present invention relates to a multiple-layered composition which eliminates the metal cover plate and is useful for effectively and durably sealing and plugging drain holes in workpieces. They are particularly useful in covering up drain holes in automotive bodies as a result of the unique properties which result from the total character of the multiple layers. The present invention also relates to a method of applying such a multiple-layered composition. The compositions of the present invention generally comprise: (a) a stiff (strong) abrasion-resistant layer comprising a thermoplastic resin; or composite; (b) a cold-shock resistant layer underlying said abrasion-resistant layer, said cold-shock resistant layer comprising a compound selected from olefinic ethylene copolymers and terpolymers, and is preferably a crosslinkable material such as ethylene-vinyl acetate copolymer or terpolymer; and (c) optionally a hot-melt adhesive layer overlying said cold-shock resistant layer, said hot-melt adhesive layer comprising a compound selected from the group consisting of (i) ethylene copolymers; (ii) phenolic hydrocarbon resins; (iii) phenolic rosin esters; (iv) a modified phenolic terpene resin; (v) a tackifying resin; or mixtures thereof.

대표청구항 ▼

A laminate article useful in the covering of a hole in a workpiece comprising: (a) an abrasion-resistant layer comprising a thermoplastic resin having a melt index in the range of 0.2 to about 10; (b) a crosslinking cold-shock resistant layer underlying said abrasion-resistant layer, said cold-shoc

A laminate article useful in the covering of a hole in a workpiece comprising: (a) an abrasion-resistant layer comprising a thermoplastic resin having a melt index in the range of 0.2 to about 10; (b) a crosslinking cold-shock resistant layer underlying said abrasion-resistant layer, said cold-shock resistant layer comprising a polymeric material selected from the group consisting of ethylene copolymers, terpolymers, and mixtures thereof; and (c) a hot-melt adhesive layer underlying said cold-shock resistant layer, said hot-melt adhesive layer comprising a compound selected from the group consisting of (i) ethylene copolymers; (ii) phenolic hydrocarbon resins; (iii) phenolic rosin esters; (iv) phenolic hydrocarbon terpene resins; (v) a rosin ester tackifying resin; and mixtures thereof.