METHOD AND APPARATUS FOR DEPOSITING MOISTURE ABSORBENT AND THERMOPLASTIC MATERIAL IN A SUBSTRATE

• Main Authors: FENA, ERNEST J, BECKER, RICHARD A, FOLDEN, DAVID W, FIMMEN, CHARLES L, SCHNEIDER, DOUGLAS A, SELESTAK, DAVID M, SHLAPAK, ROBERT, MOLNAR, JULIUS J
• Format: Patent
• Language: English; Korean
• Published: 01.12.1998
• Edition: 6
• Subjects: BANDAGES, DRESSINGS OR ABSORBENT PADS; BRAIDING; COTTON-WOOL; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF,TUBULAR STRUCTURES OF THE BODY, E.G. STENTS; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS,NON-WOVEN FABRICS; FILTERS IMPLANTABLE INTO BLOOD VESSELS; FIRST-AID KITS; FOMENTATION; HUMAN NECESSITIES; HYGIENE; KNITTING; LACE-MAKING; MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARYMATERIAL; MEDICAL OR VETERINARY SCIENCE; NON-WOVEN FABRICS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; PROSTHESES; TEXTILES; TREATMENT OR PROTECTION OF EYES OR EARS; TRIMMINGS; WADDING

섬유질 재료(28)의 부직 패드(30)의 형성 방법 및 장치는 고흡습 입자(36)를 구비하고 열가소성 재료는 패드의 두께의 다른 영역에서 고흡습 입자 및/또는 열가소성 섬유 재료의 근본적으로 자유롭게 유지할 동안에 하나 이상의 예정된 부직 패드의 두께 영역을 통하여 섬유질 물질과 혼합된다. 부직 패드는 형성 체임버(12)를 통하여 움직이는 컨베이어(12)의 한 측면상에 형성되어 있고 형성 체임버는 컨베이어상의 체임버내로 섬유질 재료를 끌어내는 진공원(24)에 연결된 닥터(22)를 가진다. 하나의 분배기(40)는 컨베이어상에 끌어 올리는 섬유질 물질에 대하여 예정된 위치에서 고흡습 재료를 방출하고, 하나 이상의 분배기 (56, 68, 83, 84)는 열가소성 섬유 재료를 방출한다. A method and apparatus for forming a non-woven pad of fibrous material is provided in which highly moisture-absorbent particles and fibers of thermoplastic material are intermixed with the fibrous material throughout one or more predetermined portions of the thickness of the non-woven pad while maintaining other portions of the thickness of the pad substantially free of highly moisture-absorbent particles and/or thermoplastic fiber material. The non-woven pad is formed on one side of a conveyor moving through a forming chamber which has a duct connected to a source of vacuum operable to draw fibrous material injected into the chamber onto the conveyor. One dispenser discharges the highly moisture-absorbent material at a predetermined location relative to the fibrous material being drawn onto the conveyor, and at least one other dispenser discharges the thermoplastic fiber material into the chamber at a location to intermix the thermoplastic fiber material with the fibrous material and highly moisture-absorbent material being drawn onto the conveyor at the predetermined location, and/or to intermix the thermoplastic fiber materials with the fibrous material in areas of the thickness of the non-woven pad on one or both sides of the highly moisture-absorbent material.