BREATHABLE AND MICROPOROUS THIN THERMOPLASTIC FILM

• Main Authors: ESCHENBACHER FRANK, FORD JERRY, CANCIO LEOPOLDO V
• Format: Patent
• Language: English; Korean
• Published: 12.05.2020
• Subjects: AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING; BANDAGES, DRESSINGS OR ABSORBENT PADS; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF,TUBULAR STRUCTURES OF THE BODY, E.G. STENTS; 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; MEDICAL OR VETERINARY SCIENCE; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; PERFORMING OPERATIONS; PROSTHESES; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR; SHAPING OR JOINING OF PLASTICS; TRANSPORTING; TREATMENT OR PROTECTION OF EYES OR EARS; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

본 발명은 15gsm 이하의 평량 및 적어도 약 500그램 HO/24시간/㎡의 수증기 전달율을 갖는 통기성 열가소성 막, 라미네이트, 및 상기 막의 제조 방법에 관한 것으로, 상기 막은 파단시 CD 부하량에 대한 파단시 MD 부하량의 비가 약 10 미만이고, 적어도 약 5g의 기계-방향 노치된 엘멘도르프 인열 강도 또는 적어도 약 15g의 기계-방향 노치된 사다리꼴 인열 강도 중의 적어도 하나를 갖는다. Breathable, thermoplastic films, laminates, and methods of making films having a basis weight less than or equal to 15 gsm and a water vapor transmission rate of at least about 500 grams H2O/24-hour/m2, wherein the film 15 has a ratio of the MD load at break to the CD load at break of less than about 10, and at least one of a machine-direction notched Elmendorf tear strength of at least about 5 g or a machine-direction notched trapezoidal tear strength of at least about 15 g.