Method for repairing plastic materials

Claim 2

In a process for repairing a damage in plastic or leather-like materials in which heat curable, film-forming patching compounds are covered by a graining layer and heated with a flat hot surface at a temperature and for a time to cure the patching compound, the step of coating the undamaged material around said damage with a heat insulating paste.

Claim 3

A process for repairing a damage in plastic or leather-like fabrics comprising the steps of placing a backing member in contact with the material to be repaired for defining a void with the edges of said damage, coating the undamaged matErial surrounding said damage with a heat insulating paste, filling said void with a mixture of a film forming material and a plasticizer, covering said void with a vinyl release paper, applying a flat hot surface to the vinyl release paper for a time and at a temperature to cure said mixture, and removing said flat surface said paper and said coating.

Claim 4

A process for repairing a damage in plastic or leather-like fabrics comprising the steps of placing a backing member in contact with the material to be repaired for defining a void with the edges of said damage, coating the undamaged matErial surrounding said damage with a heat insulating paste, filling said void with a mixture of a film forming material and a plasticizer, covering said void with a vinyl release paper, applying a flat hot surface to the vinyl release paper for a time and at a temperature to cure said mixture, and removing said flat surface said paper and said coating.

Claim 5

A process in accordance with claim 2 wherein said mixture includes a Polyvinyl acetate, said flat surface is at a temperature of about 300* to 350* F, and said time is less than about a minute.

Claim 6

A process in accordance with claim 3 wherein said mixture comprises about 70% polyvinyl chloride acetate and 30% plasticizer by weight.

Claim 7

A process in accordance with claim 3 wherein said plasticizer comprises diethylhexyl phthalate.

Claim 8

A PROCESS FOR REPARING A DAMAGE IN PLATIC OR LEATHER-LIKE FABRICS COMPRISING THE STEPS OF PLACING A BACKING MEMBER IN CONTACT WITH THE MATERIAL TO BE REPAIRED FOR DEFINING A VOID WITH THE EDGE OF SAID DAMAGE, COATING THE UNDAMAGED MATERIAL SURROUNDING SAID DAMAGE WITH A HEAT INSULATING PASTE, FILLING SAID VOID WITH A MIXTURE OF A FILM FORMING MATERIAL AND A PLASTICIZER, COVERING SAID VOID WITH A VINYL RELEASE PAPER, APPLYING A FLAT HOT SURFACE TO THE VINYL RELEASE PAPER FOR A TIME AND AT A TEMPERATURE TO CURE SAID MIXTURE AND REMOVING SAID FLAT SURFACE, SAID PAPER AND SAID COATING, WHEREIN SAID HEAT INSULATING PAST COMPRISES A MIXTURE OF BENTONITE AND TALC IN WATER.

Claim 9

A PROCESS FOR REPARING A DAMAGE IN PLATIC OR LEATHER-LIKE FABRICS COMPRISING THE STEPS OF PLACING A BACKING MEMBER IN CONTACT WITH THE MATERIAL TO BE REPAIRED FOR DEFINING A VOID WITH THE EDGE OF SAID DAMAGE, COATING THE UNDAMAGED MATERIAL SURROUNDING SAID DAMAGE WITH A HEAT INSULATING PASTE, FILLING SAID VOID WITH A MIXTURE OF A FILM FORMING MATERIAL AND A PLASTICIZER, COVERING SAID VOID WITH A VINYL RELEASE PAPER, APPLYING A FLAT HOT SURFACE TO THE VINYL RELEASE PAPER FOR A TIME AND AT A TEMPERATURE TO CURE SAID MIXTURE AND REMOVING SAID FLAT SURFACE, SAID PAPER AND SAID COATING, WHEREIN SAID HEAT INSULATING PAST COMPRISES A MIXTURE OF BENTONITE AND TALC IN WATER.

Claim 10

A process for repairing a damage in plastic or leather-like fabrics comprising the steps of placing a backing member in contact with the material to be repaired for defining a void with the edges of said damage, coating the undamaged material surrounding said damage with a heat insulating paste, filling said void with a mixture of a film forming material and a plasticizer, covering said void with a vinyl release paper, applying a flat hot surface to the vinyl release paper for a time and at a temperature to cure said mixture and removing said flat surface, said paper and said coating, wherein said heat insulating paste comprises a mixture of Bentonite and talc in water.

Claim 11

A process for repairing a damage in plastic or leather-like fabrics comprising the steps of placing a backing member in contact with the material to be repaired for defining a void with the edges of said damage, coating the undamaged material surrounding said damage with a heat insulating paste, filling said void with a mixture of a film forming material and a plasticizer, covering said void with a vinyl release paper, applying a flat hot surface to the vinyl release paper for a time and at a temperature to cure said mixture and removing said flat surface, said paper and said coating, wherein said heat insulating paste comprises a mixture of Bentonite and talc in water.