Abstract:
Breathable materials comprise a low-elongation fabric layer and a microporous coating thereon. The microporous coating comprises a crystalline polymer composition and a filler. The materials are suitable for use in various applications including housewrap and other construction emodiments. Methods of making a breathable material comprise extrusion coating a low-elongation fabric layer with a composition comprising a crystalline polymer composition and a filler to form a coating on the low-elongation fabric layer, and incrementally stretching the coated nonwoven layer to render the coating microporous.
Abstract:
An elastic breathable film is disclosed. The film is formed from a thermoplastic elastomer that contains a filler. Once the film is formed, the film is stretched causing the formation of micropores. The thermoplastic elastomer then undergoes phase separation between hard segment blocks and soft segment blocks which restores elasticity to the film. In one embodiment, the thermoplastic elastomer is a thermoplastic polyurethane elastomer.
Abstract:
Disclosed is an air permeable film united with a nonwoven fabric, consisting of a polymer film having an inorganic material extruded to have a basic weight of 35 g/m 2 or less and united to a partial or whole surface of a nonwoven fabric. The nonwoven fabric having a basic weight of 50g/m 2 or less is united to one surface of the extruded polymer film in a melted state, with an air permeable region centering around a drawn mark distributed to the whole surface of a nonwoven fabric-united film rolled and drawn by a press roll. A method of preparing such an air permeable film united with a nonwoven fabric and a device for preparing the same are also described.
Abstract translation:公开了一种与无纺布结合的透气膜,其由具有挤出成无机材料的聚合物膜组成,其基重为35g / m 2以下,并且与无纺布的部分或全部表面结合。 将基重为50g / m 2以下的无纺布在熔融状态下与挤出的聚合物膜的一个表面结合,以分布在无纺布的整个表面上的拉伸标记为中心的透气区域 - 由压机卷起并绘制的薄膜。 还描述了制备这种与非织造织物结合的透气膜的方法及其制备方法。
Abstract:
Air cell dunnage is disclosed which collapses for shipment and is constructed to be subsequently inflated for use. The air cell dunnage is a bubble sheet (10) containing a multiplicity of gas cells (12) and a base layer (16) fused to the bubble layer (10). The bubble layer (10) further includes conduits (14) interconnecting selected groups of the selected cells and a common channel (15) extending longitudinally on the sheet (10) in fluid communication with each of the selected groups. The conduits (14) provide access to selected groups of gas cells for collapsing and inflating the cells for shipment and use, respectively.
Abstract:
A breathable barrier film laminate having a microporous multilayer film (24) formed by extruding a polymer loaded with a filler having a particle size suitable for pore formation, hot blowing the extruded film, forming a hot blown film bubble (47), collapsing the hot blown film bubble, forming a multilayer film and stretching the multilayer film, forming a plurality of micropores, and a nonwoven web material layer (23, 25) bonded to at least one surface of the microporous multilayer film. The breathable barrier film laminate is particularly suitable for use in protective apparel such as surgical gowns, surgical drapes, and coveralls.
Abstract:
The present invention provides a resilient, fluid-pervious, laminate, plastic web suitable for use as a topsheet on absorbent articles, especially catamenial articles. The web includes a first layer of polymeric material, a second layer of polymeric material and an intermediate layer of fibrous material. The fibrous material of the intermediate layer extends below the second surface of the web, preferably into the absorbent core. In-use, fluid deposited on the topsheet drains or empties more readily as the fibrous material of the intermediate layer breaks up the fluid meniscuses which form along the second surface of the web, thereby providing improved dryness and cleanliness for the user.
Abstract:
The present invention provides a three-dimensional, macroscopically expanded, apertured, laminate web suitable for use as a topsheet on an absorbent article and a method for making the same. The web includes a first layer of substantially transparent, polymeric material having an inner surface and an outer surface. A nonwoven web is secured to the inner surface of the substantially transparent polymeric material and is visible through the substantially transparent polymeric material. The presence of the nonwoven web creates the appearance of a fibrous web which is perceived as soft and skin friendly while still maintaining the fluid transport benefits of prior art plastic webs.
Abstract:
Disclosed herein is a breathable film (12) and a breathable, cloth-like film/nonwoven composite (10) made from the breathable film which is stretch-thinned and bonded to a fibrous polyolefin nonwoven web (14). Certain thermoplastic films such as, for example, linear low density polyethyelene films are difficult to thermally bond to, for example, polypropylene nonwoven webs due to the incompatibility of the two polymers. The present invention incorporates a bonding agent into one or both of the two layers thereby making it easier to thermally bond the two layers together. Processes for forming the various composites are also disclosed.