公开(公告)号：US5500281A

公开(公告)日：1996-03-19

申请号：US200597

申请日：1994-02-23

Applicant: Ramesh Srinivasan ,  James Bottomley ,  W. Andrew Coslett

Inventor： Ramesh Srinivasan ,  James Bottomley ,  W. Andrew Coslett

IPC: D04H1/42 ,  D04H1/46 ,  D04H1/54 ,  D04H1/58

CPC classification number: D04H1/54 ,  D04H1/425 ,  D04H1/4258 ,  D04H1/4291 ,  D04H1/4309 ,  D04H1/4334 ,  D04H1/435 ,  D04H1/4382 ,  D04H1/49 ,  D04H1/495 ,  Y10S428/913 ,  Y10T428/24273 ,  Y10T442/689 ,  Y10T442/697

Abstract: An absorbent, flushable, bio-degradable, and medically-safe nonwoven fabric suitable for use as wraps, wipes, absorbent pads, etc., is composed of from 2% to 10% by weight of untreated, water-soluble polyvinyl alcohol (PVA) fibers that are heat-bonded to a matrix of absorbent fibers. The use of PVA fibers in low amounts provides softness, while sufficient wet strength is provided by heat bonding the PVA fibers completely to the other fibers in a two-stage heating process. The resulting nonwoven fabric has a high wet-to-dry tensile strength ratio, good drape softness, and high fluid absorptive capacity. In a method for producing the nonwoven fabric, the PVA fibers are blended with the absorbent fibers, the blended fibers are carded onto a moving web, sufficient water is added to wet the PVA fibers while maintaining web integrity, then the web is heated in two stages, the first with heating cylinders at 40.degree. C. to 80.degree. C., then the second with heating cylinders of 60.degree. C. to 100.degree. C. The fiber web may also be hydroentangled and patterned for enhanced strength and textural properties.

Abstract translation: 适合用作包装，擦拭物，吸收垫等的吸收性，可冲洗，生物可降解和医疗安全的非织造织物由2％至10％重量的未处理的水溶性聚乙烯醇（PVA ）热粘合到吸收性纤维基质上的纤维。 使用PVA纤维的量低，提供柔软性，而通过在两阶段加热过程中将PVA纤维完全热粘合到其它纤维上提供了足够的湿强度。 所得非织造织物具有高的湿 - 干拉伸强度比，良好的悬垂柔软度和高的流体吸收能力。 在制造无纺布的方法中，将PVA纤维与吸收性纤维共混，将混合纤维梳理到移动纤维网上，加入足够的水以润湿PVA纤维，同时保持纤维网完整性，然后将纸幅加热至两 阶段，第一个加热缸在40℃至80℃，然后第二个加热缸为60℃至100℃。纤维网也可以水力缠结和图案化以增强强度和织构性能。

公开(公告)号：US5500068A

公开(公告)日：1996-03-19

申请号：US463650

申请日：1995-06-05

Applicant: Ramesh Srinivasan ,  James Bottomley ,  W. Andrew Coslett

Inventor： Ramesh Srinivasan ,  James Bottomley ,  W. Andrew Coslett

IPC: D04H1/42 ,  D04H1/46 ,  D04H1/54 ,  C09J5/02

CPC classification number: D04H1/54 ,  D04H1/425 ,  D04H1/4258 ,  D04H1/4291 ,  D04H1/4309 ,  D04H1/4334 ,  D04H1/435 ,  D04H1/4382 ,  D04H1/49 ,  D04H1/495 ,  Y10S428/913 ,  Y10T428/24273 ,  Y10T442/689 ,  Y10T442/697

Abstract: An absorbent, flushable, bio-degradable, and medically-safe nonwoven fabric suitable for use as wraps, wipes, absorbent pads, etc., is composed of from 2% to 10% by weight of untreated, water-soluble polyvinyl alcohol (PVA) fibers that are heat-bonded to a matrix of absorbent fibers. The use of PVA fibers in low amounts provides softness, while sufficient wet strength is provided by heat bonding the PVA fibers completely to the other fibers in a two-stage heating process. The resulting nonwoven fabric has a high wet-to-dry tensile strength ratio, good drape softness, and high fluid absorptive capacity. In a method for producing the nonwoven fabric, the PVA fibers are blended with the absorbent fibers, the blended fibers are carded onto a moving web, sufficient water is added to wet the PVA fibers while maintaining web integrity, then the web is heated in two stages, the first with heating cylinders at 40.degree. C. to 80.degree. C., then the second with heating cylinders of 60.degree. C. to 100.degree. C. The fiber web may also be hydroentangled and patterned for enhanced strength and textural properties.

公开(公告)号：USD803599S1

公开(公告)日：2017-11-28

申请号：US29507702

申请日：2014-10-30

Applicant: Timothy James Bottomley

Designer： Timothy James Bottomley