摘要:
A blown film process for producing low gauge, latent elastic films with high cross-direction orientation includes preferentially regulating the temperature gradient of the film along the expansion length. The regulation of temperature along the bubble profile allows more effective “down gauging” of the film and improved melt strength of the hot film. The choice of raw materials is an important element in producing cross-direction-oriented, low gauge, latent elastic films. The method of this invention can be carried out as either a multiple-bubble process or a single-bubble process.
摘要:
A composite material adapted for mechanical fastener use as a loop fastener component with a complementary hook component is made by laminating a film with an amorphous polymer layer to a prebonded nonwoven web under conditions producing laminate bonds corresponding to the prebond locations, and loose filaments or fibers between the bonds. The composite also desirably has a MVTR of at least about 100 g/m.sup.2 /24 hours and a hydrohead of at least about 50 mbar. In use as a component of a disposable personal care product such as a disposable diaper, the loop fastener component may be substantially the entire backing, providing comfort, protection and highly variable fit.
摘要翻译:适用于机械紧固件用作具有互补钩部件的环紧固件部件的复合材料通过在产生与预粘合位置相对应的层压结合的条件下的条件下将膜与非结晶聚合物层层压到预粘合的非织造纤维网上而制成,以及松散的长丝或纤维 债券之间。 复合材料还希望具有至少约100g / m 2/24小时的MVTR和至少约50mbar的氢头。 在作为一次性个人护理产品(例如一次性尿布)的组件使用中,环紧固件部件可以是基本上整个背衬,提供舒适性,保护性和高度可变配合。
摘要:
Transversely stretchable elastic laminated fabric with cloth-like facings was made by a two-step process. In the first step an inelastic laminate was made by continuously extruding an elastomer sheet between two plies of a fibrous sheet and joining the plies by applying pressure on them between a closed gap niproll assembly. Two longitudinal slits were made into the laminate. Then the rolls of inelastic laminate so made were taken to an oven and the laminate was unwound and pulled through the oven at an elevated temperature, while tension on the web was increased until the slits necked. The necked laminate was wound up on a takeup roll. When samples were unwound, surprisingly they did not grow in width, and they showed good CD-elasticity (elongation and springback). Breathability of the laminate was superior to the laminate formed using an open niproll assembly gap.
摘要:
Pattern embossed low gauge films are disclosed having multiple microporous film layers with distinct coloration, such as a dark colored layer and a light colored layer, wherein the color of the underlying film causes a visible color contrast only at the embossed regions and yet does not discolor the outer most layer. Also disclosed are film laminates and personal care articles incorporating such multilayer films.
摘要:
A breathable barrier laminate is disclosed having a first film layer comprising a microporous breathable barrier film; a second film layer comprising a breathable filled film which comprises about 50% to about 70% by weight filler and an amorphous polymer such as an elastomeric ethylene polymer having a density less than 0.89 g/cm.sup.3 ; and a third fibrous layer comprising a breathable outer layer, such as a nonwoven web of spunbonded fibers. The multiple layers can be thermally laminated wherein laminate has a peel strength in excess of 200 grams and a WVTR in excess of 300 g/m.sup.2 /day.
摘要翻译:公开了一种透气阻隔层压板,其具有包括微孔透气阻挡膜的第一膜层; 包括透气填充膜的第二膜层,其包含约50重量%至约70重量%的填料和无定形聚合物,例如密度小于0.89g / cm 3的弹性体乙烯聚合物; 以及包括透气外层的第三纤维层,例如纺粘纤维的非织造纤维网。 多层可以热层压,其中层压板的剥离强度超过200克,WVTR超过300克/平方米/天。
摘要:
A composite elastic material is provided having improved hysteresis comprising a layer of an elastic material bonded to a layer of nonelastic material at least one side. The elastic material layer is made from a blend of a narrow polydispersity number polymer and a conventional elastomer, and the blend is essentially free of low molecular weight polyethylene processing aids. The composite elastic material laminate should have a hysteresis at least 15 percent better than a similar laminate made without the narrow polydispersity number elastomer but with the processing aid.
摘要:
Lubricants for the production of net-like products from nylon and polytetramethylene terephthalate are disclosed. The lubricants comprise polyolefin with a specific melt index, said polyolefins being homopolymers of olefins or copolymers of two or more olefins.
摘要:
A thermally stable microporous breathable film is provided comprising at least 35% filler, by weight of the filled-film, and a thermoplastic polymer blend of a first polyethylene polymer and a second polyethylene polymer. The first polyethylene polymer comprises 30%-70% by weight of the polymer blend and can have a density between about 0.86 g/cm3 and 0.89 g/cm3 and the second polyethylene polymer can have a density between about 0.90 g/cm3 and 0.92 g/cm3. The filled-film can be uniaxially or biaxially oriented to form a microporous film and/or film laminate having good body conformance and which retains a high WVTR at 37° C. and above.
摘要翻译:提供了一种热稳定的微孔透气膜,其包含至少35重量%的填充膜填料,以及第一聚乙烯聚合物和第二聚乙烯聚合物的热塑性聚合物共混物。 第一聚乙烯聚合物包含30重量%-70重量%的聚合物共混物,并且可以具有约0.86g / cm 3至0.89g / cm 3的密度和 第二聚乙烯聚合物的密度可以在约0.90g / cm 3和0.92g / cm 3之间。 填充膜可以单轴或双轴取向以形成具有良好的身体一致性并且在37℃及以上保持高WVTR的微孔膜和/或膜层压体。
摘要:
A breathable multilayer film including a breathable core layer and one or two skin layers is prepared by providing a core layer mixture of a thermoplastic polymer and a particulate filler, providing a skin layer mixture of at least two incompatible polymers, coextruding the core and skin layer mixtures to form a multilayer film, and stretching the multilayer film to cause void formation in the core layer and crack formation in the one or two skin layers. By forming cracks in the skin layers during stretching, the skin layers can perform dual functions of alleviating die build-up of filler from the core layer during coextrusion, and bonding the film to a substrate subsequent to coextrusion, without unduly hindering the moisture vapor transmission rate of the film or laminate product. The breathable film, and laminates including the film, are useful in a wide variety of personal care absorbent articles, medical garments, and other products.
摘要:
Disclosed is a composite material adapted for mechanical fastener use as the loop component complementary to a hook component. The composite material is made by laminating a film with an amorphous polymer layer to a prebonded nonwoven web, using a bond pattern different from the pattern on the nonwoven so as to provide loose filaments or fibers between the laminate bond points. Desirably, the composite also has a WVTR of at least about 100 g/m2/24 hours and a hydrohead of at least about 50 mbar. In use as a component of a disposable personal care product such as a disposable diaper, the loop fastener component may be substantially the entire backing to provide comfort, protection and highly variable fit.
摘要翻译:公开了适于机械紧固件使用的复合材料,作为与钩部件互补的环部件。 复合材料通过使用不同于非织造织物上的图案的粘结图案将非晶形聚合物层的膜层压到预粘合的非织造纤维网上,以便在层压结合点之间提供松散的长丝或纤维。 期望地,复合材料还具有至少约100g / m 2/24小时的WVTR和至少约50mbar的水头。 在用作一次性个人护理产品(例如一次性尿布)的组件时,环紧固件部件可以是基本上整个背衬,以提供舒适性,保护性和高度可变的配合。