Method for performing resin injected pultrusion employing multiple resins

A method for performing resin impregnated pultrusion comprising the steps of:

• supplying at least first and second continuous interior layers and at least first and second continuous exterior layers for forming a pultrusion reinforcement pack;
• impregnating said first interior layer with at least a first resin material;
• impregnating said second interior layer with at least a second resin material which differs from said first resin material;
• combining said impregnated first and second interior layers and said first and second exterior layers to form a reinforcement pack;
• passing said reinforcement pact into an injection die;
• and,
• injecting a final resin material into said injection die to impregnate said reinforcement pack with said final resin material to form an impregnated pultrusion reinforcement pack, wherein said at least one of said first and second resin materials are substantially nonidentical to said final resin material.

A method for performing resin injected pultrusion comprising the steps of:

• supplying at least one continuous first interior layer and at least one continuous second exterior layer;
• impregnating said at least one first interior layer with at least a first resin material comprising a strength imparting resin by passing said first interior layer into an impregnation die and injecting said at least one first resin material into said impregnation die;
• combining said impregnated first interior layer and said at least one second exterior layer to form a pultrusion reinforcement pack;
• passing said reinforcement pack into an injection die;
• and,
• injecting a final resin material comprising a flexibility imparting resin into said injection die to impregnate said reinforcement pack with the final resin material to form an impregnated pultrusion reinforcement pack, wherein said first and final resin materials are substantially nonidentical resin materials.

A method for performing resin injected pultrusion comprising the steps of:

• supplying at least one continuous first interior layer and at least one continuous second exterior layer;
• impregnating said at least one first interior layer with at least a first resin material comprising a strength imparting resin by passing said first interior layer into an impregnation die and injecting said at least one first resin material into said impregnation die;
• combining said impregnated first interior layer and said at least one second exterior layer to form a pultrusion reinforcement pack;
• passing, said reinforcement pack into an injection die;
• and
• injecting a final resin material comprising a chemical resistant resin into said injection die to impregnate said reinforcement pack with the final resin material to form an impregnated pultrusion reinforcement pack, wherein said first and final resin materials are substantially nonidentical resin materials.