Abstract:
This invention relates to the production of durably liquidproof laminates and articles made therefrom, the laminates incorporating a barrier layer and a textile made from a composite yam containing a core including fiberglass as a strength component and a sheath of a different material around the core. Shelters and other protective articles incorporating this laminate are also described.
Abstract:
A vacuum bag (23) forming a vacuum envelope over polymeric materials being formed against a mold, has a fabric (55) (55) reinforced with flexible reinforcement fibers to withstand multiple mold cycles, and a chemically non-reactive and non-adhering material forming a release surface (60) separating the fabric (55) from a polymeric material being formed against a mold. The vacuum bag has a network of veins (79) or nubs (61) to distribute the flow of polymeric material.
Abstract:
An article (10) having (a) a layer of fabric (11) having a first surface (20) and a second surface (21) made of polytetrafluoroethylene fibers; and (b) a first composite (14) comprising (i) a porous PTFE film (13) having interconnected passages and pathways and (ii) a fluoropolymer adhesive (12), wherein said fluoropolymer adhesive (12) is at least partially contained in said passages and pathways of said PTFE film (13), said first composite (14) disposed adjacent to said first surface (20) of said fabric (11), wherein the article (10) passes a Newark Flex test after 10,000 cycles. In another embodiment, the invention includes a second composite (15) comprising (i) a porous PTFE film (17) having interconnected passages and pathways and (ii) a fluoropolymer adhesive (16), wherein said fluoropolymer adhesive (16) is at least partially contained in said passages and pathways of said PTFE film (17), said second composite (15) disposed adjacent to said second surface (21) of said fabric (11). The article of the present invention is preferably waterproof, fire retardant, and flexible. It is also preferably an architectural fabric for retractable, temporary, or permanent structures and is adapted to be joined to itself by heat welding.
Abstract:
The invention relates to a method of manufacture of a composite product comprising at least one layer of reinforced woven material and at least one layer of PTFE foil or ePTFE foil, where the foil or foils are laminated together with the layer or layers of woven material under the use of heating and pressurising, where the composite material subsequently is cooled to a fully or partly fixed state. According to a preferred embodiment the composite is fixated by means of one or two co-operating pressure surfaces under a relative high pressure. By the invention a form stabile composite material having a considerably enhanced E-module is achieved.
Abstract:
Aspects of the invention are found in a heating component having a composite material coated on a support. The composite material includes a fluorinated or silicone polymer and inductively-heatable particles. Additional aspects of the invention are found in a heating belt having a flexible support coated with a composite material. The composite material includes a polymer material and inductively-heatable particles. Further aspects of the invention are found in a system for heating an article. The system includes a heating belt and a field generator. The heating belt includes a flexible support coated in a composite material. The composite material includes a polymeric matrix and inductively-heatable particles. The field generator induces a field about the heating belt. The inductively-heatable particles heat in the presence of the field.
Abstract:
A unique durable waterproof and moisture vapor permeable composite sheet material is described that includes a microporous film or film/nonwoven laminate, that is held in close proximity to one or more layers of strength enhancing fabrics. The disclosed composite sheet material is uniquely designed for use in outerwear, tents, tarps, covers, containment systems and shelters requiring waterproofness and breathability during extended outdoor exposure to rain and other high humidity environments.
Abstract:
A laminated fabric characterized in that it is constructed such that a front fabric is laminated to one surface of a durable film through a temporary-fixing adhesive agent layer and a back fabric is laminated to the remaining surface of the durable film through a durable adhesive agent layer.
Abstract:
An endless belt (10) for use in digital imaging systems is provided having uniform edge to edge flatness, and precise circumferential and edge to edge thickness. The layers comprising the belt may be tailored as desired for use in either latent image formation, image transfer or sheet transport operations. In one embodiment, the belt includes an elastomeric base layer (40), an intermediate polymer ply (42) over the base layer, and an outer elastomeric layer (44). Alternatively, the belt includes an elastomeric base layer (40) and an outer polymer layer (45). The belt (10) may further include reinforcing layers which may comprise a woven or non-woven fabric layer (48) and/or an elastomer-impregnated spun cord layer (46). The belt is preferably manufactured by building the layers on a workpiece and then curing the layers.
Abstract:
A non-slip, waterproof, water vapor permeable fabric and method of making are described. The fabric is made by obtaining a waterproof, water vapor permeable film and adhering one side of the film to a layer of fabric which may be a stretch fabric. The other side of the film is provided with a discontinuous coating of an elastomer which has an elastic modulus of less than 5.5N/mm . The discontinuous coating may take various forms including a pattern of dots or a grid of intersecting lines. The discontinuous coating may optionally project above the surface of the film. The presence of the discontinuous coating of elastomer results in a fabric with a static coefficient of friction of greater than about 1.0 on the discontinuously coated side of the fabric. The film is preferably a porous expanded polytetrafluoroethylene film provided with a hydrophilic coating on one surface; the hydrophilic coating may serve as an adhesive for joining the one surface of the film to the layer of fabric. The inventive fabric is useful for various applications such as articles of medical protective clothing including surgical drapes and liners for orthotic braces, which applications may benefit from the non-slip character of the fabric.