Textile products having selectively applied sealant or coating and method of manufacture

A method for manufacturing a substantially impermeable textile graft comprising:

• providing a textile graft having a first surface and an opposed second surface;
• providing a water soluble masking agent selected from the group consisting of polyvinylpyrrolidone, glycerol, methyl cellulose, poly(ethylene glycol), poly(ethylene glycol) hydrogel, polyethylene oxide, and combinations thereof;
• applying the water soluble masking agent to a portion of the first surface of the textile graft;
• ablating a portion of the water soluble masking agent from the second surface of the textile graft;
• providing a water insoluble sealing agent selected from the group consisting of silicones, polyurethanes, polycarbonates, thermoplastic elastomers, and combinations thereof;
• and
• applying the water insoluble sealing agent to the second surface of the textile graft.

A method of providing a sealant to a textile graft comprising:

• providing a textile graft having a first surface and an opposed second surface and having a textile pattern of inter-engaging yarns and interstices between or in the yarns;
• providing a water soluble masking agent selected from the group consisting of polyvinylpyrrolidone, glycerol, methyl cellulose, poly(ethylene glycol), poly(ethylene glycol) hydrogel, polyethylene oxide, and combinations thereof;
• applying the water soluble masking agent to at least a portion of the first surface of the textile graft, wherein a portion of the water soluble masking agent is further disposed at a plurality of the interstices;
• providing a water insoluble sealing agent selected from the group consisting of silicones, polyurethanes, polycarbonates, thermoplastic elastomers, and combinations thereof;
• applying the water insoluble sealing agent to the second surface of the textile graft and over the portion of the water soluble masking agent being disposed at a plurality of the interstices;
• and
• removing the water soluble masking agent after the step of applying the water insoluble sealing agent;
• whereby the water insoluble sealing agent spreads over the water soluble masking agent to provide one or more of the following:
• a substantially homogenous layer of the water insoluble sealing agent;
• a substantially uniform and uninterrupted coating of the water insoluble sealing agent;
• a layer of water insoluble sealing agent having a substantially uniform weight per given area of application;
• a substantially liquid impermeable barrier to the underlying textile graft surface;
• a substantially lower force to extend a graft coated with the water insoluble sealing agent as compared to comparable grafts which have not used a masking agent;
• a substantially less amount of water insoluble sealing agent to provide a substantially liquid impermeable barrier to the underlying textile graft surface as compared to comparable grafts which have not used a masking agent;
• and combinations thereof.

A method of sealing a textile graft comprising:

• applying a coating of a substantially water soluble masking agent, having a viscosity of from about 2,000 centipoise at room temperature to about 100,000 centipoise at room temperature, to at least a portion of a luminal surface of the textile graft, wherein a portion of the water soluble masking agent is further disposed at a plurality of interstices in the graft;
• and
• applying a water insoluble sealing agent to an outer graft surface opposing the luminal surface of the graft;
• wherein the water soluble masking agent causes one or more of the following to occur:
• a substantially homogenous layer of the water insoluble sealing agent is formed;
• a substantially uniform and uninterrupted coating of the water insoluble sealing agent is formed;
• a layer of water insoluble sealing agent having a substantially uniform weight per given area of application;
• a substantially liquid impermeable barrier to the underlying textile graft surface;
• a substantially lower force to extend a graft coated with the water insoluble sealing agent as compared to comparable grafts which have not used a masking agent;
• a substantially less amount of water insoluble sealing agent to provide a substantially liquid impermeable barrier to the underlying textile graft surface as compared to comparable grafts which have not used a masking agent;
• and combinations thereof.