Laterally extensible nonwoven composites

• Main Authors: CONRAD JOHN H, FITTS, JAMES, R., JR
• Format: Patent
• Language: Chinese; English
• Published: 12.09.2023
• Subjects: BANDAGES, DRESSINGS OR ABSORBENT PADS; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS, ORSURGICAL ARTICLES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF,TUBULAR STRUCTURES OF THE BODY, E.G. STENTS; DISINFECTION, STERILISATION, OR DEODORISATION OF AIR; FILTERS IMPLANTABLE INTO BLOOD VESSELS; FIRST-AID KITS; FOMENTATION; HUMAN NECESSITIES; HYGIENE; LAYERED PRODUCTS; LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS, OR SURGICALARTICLES; MEDICAL OR VETERINARY SCIENCE; METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS INGENERAL; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; PERFORMING OPERATIONS; PROSTHESES; TRANSPORTING; TREATMENT OR PROTECTION OF EYES OR EARS

A nonwoven composite having longitudinal and transverse dimensions is provided. The composite includes a nonwoven fabric positioned adjacent an elastic film. The nonwoven fabric includes a spunbond web formed by necking a base spunbond web. The base spunbond web includes a plurality of fibers oriented generally in the machine direction and exhibiting a machine direction tensile strength and a transverse direction tensile strength. The ratio of the longitudinal tensile strength to the transverse tensile strength is about 4: 1 or greater. 提供了一种具有纵向和横向尺寸的非织造复合物。所述复合物包括与弹性膜相邻而定位的非织造面料。所述非织造面料包含通过使基础纺粘网颈缩而形成的纺粘网。所述基础纺粘网包含大致以纵向取向的并表现出纵向拉伸强度和横向拉伸强度的多根纤维。所述纵向拉伸强度与所述横向拉伸强度的比率为约4:1或更大。