Process for preparing striped sheet material continuously

Claim 2

In the process for continuously preparing sheets or plates by passing a mass of polymerizable liquid or paste between moving surfaces which are substantially parallel in the direction of the movement and have substantially no relative movement and polymerizing the monomeric constituents of said liquid or paste the improvement comprising continuously depositing and partially curing so that it will no longer flow at least one longitudinal colored stripe of controlled uniform thickness and width composed of a colored polymerizable liquid or paste on at least one of said moving surfaces before passing said mass of liquid or paste therebetween.

Claim 3

In the process for preparing a composite sheet material by moving longitudinally a lower surface film or web, depositing on this web a mass of heat settable liquid resin, placing in the liquid resin fibrous reinforcing material, displacing the air in the reinforcing material with liquid resin, then covering the mixture of liquid resin and reinforcing material with an upper film or web, applying pressure to the upper web and lower web to consolidate the liquid resin and reinforcing material, thus forming a composite sheet, moving the composite sheet longitudinally through a zone causing the resin to set or cure and during the movement through said zone engaging the opposite surfaces of the composite sheet and shaping it into a desired form in a longitudinal direction, the improvement comprising continuously depositing and partially curing so that it will no longer flow at least one longitudinal, colored stripe of controlled uniform thickness and width composed of a colored, polymerizable liquid or paste on at least one of said webs before contacting the web with the mass of heat-settable liquid resin.

Claim 4

In the process for preparing a composite sheet material by moving longitudinally a lower surface film or web, depositing on this web a mass of heat settable liquid resin, placing in the liquid resin fibrous reinforcing material, displacing the air in the reinforcing material with liquid resin, then covering the mixture of liquid resin and reinforcing material with an upper film or web, applying pressure to the upper web and lower web to consolidate the liquid resin and reinforcing material, thus forming a composite sheet, moving the composite sheet longitudinally through a zone causing the resin to set or cure and during the movement through said zone engaging the opposite surfaces of the composite sheet and shaping it into a desired form in a longitudinal direction, the improvement comprising continuously depositing and partially curing so that it will no longer flow at least one longitudinal, colored stripe of controlled uniform thickness and width composed of a colored, polymerizable liquid or paste on at least one of said webs before contacting the web with the mass of heat-settable liquid resin.

Claim 5

In the process for producing a composite sheet of reinforced plastic material by continuously depositing a measured quantity of a settable liquid resin on a forwardly moving carrier web, continuously feeding chopped strands of fibrous material onto the liquid resin aNd compacting and pressing said strands into the liquid resin by a plurality of threads extending lengthwise of the sheet, laying a cover web on the resin and fiber mixture, passing the resulting composite sheet between rolls to squeeze out air and establish the thickness of the sheet, passing the thus formed sheet through slots of fixed width while setting the resin, the improvement comprising continuously depositing and partially curing so that it will no longer flow at least one longitudinal, colored stripe of controlled uniform thickness and width composed of a colored polymerizable liquid or paste on at least one of said webs before depositing the measured quantity of settable liquid resin on the web.

Claim 6

In the process for producing a composite sheet of reinforced plastic material by continuously depositing a measured quantity of a settable liquid resin on a forwardly moving carrier web, continuously feeding chopped strands of fibrous material onto the liquid resin aNd compacting and pressing said strands into the liquid resin by a plurality of threads extending lengthwise of the sheet, laying a cover web on the resin and fiber mixture, passing the resulting composite sheet between rolls to squeeze out air and establish the thickness of the sheet, passing the thus formed sheet through slots of fixed width while setting the resin, the improvement comprising continuously depositing and partially curing so that it will no longer flow at least one longitudinal, colored stripe of controlled uniform thickness and width composed of a colored polymerizable liquid or paste on at least one of said webs before depositing the measured quantity of settable liquid resin on the web.

Claim 7

The process of claim 3 wherein the settable liquid resin and polymerizable liquid or paste are unsaturated polyester-liquid monomer compositions.

Claim 8

The process of claim 4 wherein the fibrous material is glass fiber.

Claim 9

The process of claim 5 wherein the carrier web and cover web are cellophane.