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:
Breathable microporous films are provided having controlled regional breathability with thick high WVTR regions and thinner low WVTR regions. The zoned breathable microporous films can be made by selectively applying heat and/or pressure to specific regions the microporous film such as by feeding a microporous film through a pair of heated nip rollers with one of the rolls having a raised surface area or by applying a focused stream of hot air. Monolayer microporous films and multilayer films having at least one microporous layer can be treated to impart zoned breathability to the film.
摘要:
A composite material adapted for barrier garment applications 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 unbonded areas between the bonds while maintaining constant film thickness. The composite has enhanced resistance to viral penetration for use as a surgical gown material, for example, and also desirably has a MVTR of at least about 300 g/m2/24 hours and a hydrohead of at least about 50 mbar. In use as a component of a protective apparel such as a surgical gown or drape, the composite provides comfort and protection with reduced risk of film damage.
摘要翻译:适用于屏障服装应用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和在粘合之间的未粘合区域同时保持恒定的膜厚度的条件下将非晶形聚合物层的膜层压到预粘合的非织造纤维网上而制成。 该复合材料具有增强的抗病毒渗透性,用作手术礼服材料,例如,并且还希望具有至少约300g / m 2/24小时的MVTR和至少约50mbar的水头。 作为保护性服装(例如手术衣或披肩)的组分使用,复合材料提供了舒适和保护,降低了膜损伤的风险。
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。
摘要:
An elastic liquid impermeable laminate is disclosed having an extensible barrier film; an 8 g/m.sup.2 to 100 g/m.sup.2 elastomeric nonwoven web comprising fibers of low density polyethylene having a density less than 0.89 g/cm.sup.3 ; and an extensible cloth-like outer layer, such as a nonwoven web of spunbonded fibers. The barrier laminate can be laminated by thermal point bonding to create patterns having improved loft, excellent hand and while achieving peel strengths in excess of 500 grams.
摘要翻译:公开了一种具有可伸展阻挡膜的弹性液体不可渗透层压体; 包含密度小于0.89g / cm 3的低密度聚乙烯纤维的8g / m 2至100g / m 2的弹性体非织造网; 以及可伸展的布状外层,例如纺粘纤维的非织造纤维网。 阻隔层压板可以通过热点粘合层压,以产生具有改进的蓬松度,优异的手感并且同时实现超过500克的剥离强度的图案。
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 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:
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.