MANUFACTURING METHOD OF UNEVEN SHEET

• Main Author: CHIBA SHOGO
• Format: Patent
• Language: English; Japanese
• Published: 05.03.2020
• 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; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR; FOMENTATION; HUMAN NECESSITIES; HYGIENE; LAUNDERING; 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; TEXTILES; TRANSPORTING; TREATMENT OF TEXTILES OR THE LIKE; TREATMENT OR PROTECTION OF EYES OR EARS; TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS,FABRICS, FEATHERS, OR FIBROUS GOODS MADE FROM SUCH MATERIALS; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

To provide a manufacturing method of an uneven sheet which can efficiently produce a bulky uneven sheet excellent in feel, air permeability and design while suppressing production cost.SOLUTION: A manufacturing method of an uneven sheet 1 of the present invention is as follows. First, a long nonwoven fabric 2L and a long non-stretchable film 3L having been stretched uniaxially or more are overlapped so that a stretching direction of the film and a conveying direction of the long nonwoven fabric coincide with each other, and a joining part 4 is formed intermittently in the stretching direction to form a laminated long object 1L. Next, the laminated long object 1L is cut in a direction intersecting with an extending direction to obtain a laminated sheet 1m for each leaf. Thereafter, by applying thermal energy to a film 3 of the laminated sheet 1m and contracting it, a nonwoven fabric 2 of the laminated sheet 1m is projected between the joining parts 4 to form a convex part 21, and the uneven sheet 1 is manufactured.SELECTED DRAWING: Figure 2 【課題】製造コストを抑制しながら、肌触り、通気性及びデザイン性に優れた嵩のある凹凸シートを効率的に製造することができる凹凸シートの製造方法を提供すること。【解決手段】本発明の凹凸シート１の製造方法は、先に、不織布の長尺物２Ｌと、一軸以上の延伸加工の施された非伸縮性フィルムの長尺物３Ｌとをフィルムの延伸方向と不織布の長尺物の搬送方向を一致させるように重ね合わせ、延伸方向に間欠的に接合部４を形成して積層長尺物１Ｌを形成する。次に、積層長尺物１Ｌを、その延びる方向と交差する方向に切断して毎葉の積層シート１ｍを得る。その後、積層シート１ｍのフィルム３に熱エネルギーを与えて収縮させることで、積層シート１ｍの不織布２を接合部４間において突出させて凸部２１を形成し、凹凸シート１を製造する。【選択図】図２