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Method for Producing Stretchable Sheet
| Content Provider | The Lens |
|---|---|
| Abstract | To acquire a stretchable sheet having air permeability due to the presence of through-holes, with no hole formed through outer layers. There are provided: interposing a resilient film (30) that stretches and contracts, in a stretched state between a first sheet layer (21) having no elasticity and a second sheet layer (22) having no elasticity; and joining the first sheet layer (21) and the second sheet layer (22) together with a number of joints directly or through the resilient film 30 by melting the resilient film (30) with ultrasonic fusion energy applied by a thermal fusion device from the outside of the first sheet layer (21) and the outside of the second sheet layer (22) to a number of joint regions with intervals, during the interposing. A through-hole (31) is formed through at least a boundary portion in a direction of the stretching between the resilient film (30) and each of joints (40), with the first sheet layer (21) and the second sheet layer (22) retained, no hole being formed over the entirety of each of the joint regions. |
| Related Links | https://www.lens.org/lens/patent/013-665-332-357-689/frontpage |
| Language | English |
| Publisher Date | 2017-12-06 |
| Access Restriction | Open |
| Alternative Title | Verfahren Zur Herstellung Einer Dehnbaren Folie Procédé De Production De Feuille Étirable |
| Content Type | Text |
| Resource Type | Patent |
| Date Applied | 2016-01-29 |
| Agent | Meissner Bolte Partnerschaft Mbb |
| Applicant | Daio Seishi Kk |
| Application No. | 16743585 |
| Claim | A method of manufacturing a stretchable sheet that stretches and contracts, the method comprising: interposing a resilient film that stretches and contracts, in a stretched state between a first sheet layer having no elasticity and a second sheet layer having no elasticity; and joining the first sheet layer and the second sheet layer together with a number of joints directly or through the resilient film by melting the resilient film with ultrasonic fusion energy applied by a thermal fusion device from an outside of the first sheet layer and an outside of the second sheet layer to a number of joint regions with intervals, in a state where the resilient film has been interposed in the stretched state between the first sheet layer and the second sheet layer, during the interposing, wherein a through-hole is formed through at least a boundary portion in a direction of the stretching between the resilient film and each of the joints, with the first sheet layer and the second sheet layer retained, no hole being formed over the entirety of each of the joint regions, during the joining. A method of manufacturing a stretchable sheet that stretches and contracts, the method comprising: interposing a resilient film that stretches and contracts, in a stretched state between a first sheet layer having no elasticity and a second sheet layer having no elasticity, the first sheet layer being supplied in a machine direction, the second sheet layer being supplied in the machine direction, the resilient film being supplied in the machine direction; and joining the first sheet layer and the second sheet layer together with a number of joints directly or through the resilient film by melting the resilient film with ultrasonic fusion energy applied by a thermal fusion device from an outside of the first sheet layer and an outside of the second sheet layer to a number of joint regions with intervals, in a state where the resilient film has been interposed in the stretched state between the first sheet layer and the second sheet layer, during the interposing, wherein a through-hole is formed through at least a boundary portion in the machine direction between the resilient film and each of the joints, with the first sheet layer and the second sheet layer retained, no hole being formed over the entirety of each of the joint regions, during the joining. The method of manufacturing the stretchable sheet according to claim 2, wherein the thermal fusion device includes an anvil roll and an ultrasonic horn, the anvil roll includes a number of protruding portions formed with intervals in a roll length direction and in an outer circumferential direction on an outer surface, and a group of the protruding portions and the ultrasonic horn performs the joining. The method of manufacturing the stretchable sheet according to claim 3, wherein the resilient film is inserted into a nip roll stage including the anvil roll and a nip roll facing the anvil roll so as to be supplied around the anvil roll through a nip, and the anvil roll and the ultrasonic horn joins the first sheet layer, the resilient film, and the second sheet layer together, the ultrasonic horn being arranged to face the anvil roll at a position downstream from a position of the nip. The method of manufacturing the stretchable sheet according to claim 4, wherein the anvil roll is accelerated to be faster than the nip roll in peripheral speed to stretch the resilient film. The method of manufacturing the stretchable sheet according to claim 2, wherein an arrangement of the joints has a staggered pattern. |
| CPC Classification | SHAPING OR JOINING OF PLASTICS;SHAPING OF MATERIAL IN A PLASTIC STATE; NOT OTHERWISE PROVIDED FOR;AFTER-TREATMENT OF THE SHAPED PRODUCTS; e.g. REPAIRING Filters Implantable Into Blood Vessels; Prostheses; Devices Providing Patency To; Or Preventing Collapsing Of; Tubular Structures Of The Body; E.G. Stents; Orthopaedic; Nursing Or Contraceptive Devices; Fomentation; Treatment Or Protection Of Eyes Or Ears; Bandages; Dressings Or Absorbent Pads; First-Aid Kits INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C; RELATING TO PARTICULAR ARTICLES LAYERED PRODUCTS; i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT; e.g. CELLULAR OR HONEYCOMB; FORM |
| Extended Family | 135-933-310-834-351 009-678-157-458-658 096-929-649-198-492 144-357-100-289-352 188-006-420-002-199 023-157-636-483-950 076-872-594-991-484 109-624-488-879-838 094-762-050-879-422 149-477-336-719-919 171-055-190-957-339 040-372-008-200-92X 109-212-187-455-790 191-876-034-585-442 040-180-322-447-14X 174-370-285-436-113 032-643-565-225-427 172-560-254-625-311 128-020-394-205-113 026-677-412-121-756 138-053-973-172-807 053-681-613-713-142 039-124-438-106-337 020-857-394-028-426 183-695-245-836-106 171-342-511-024-460 123-510-422-786-585 012-826-596-945-044 042-316-084-725-484 023-931-106-848-529 028-669-212-519-674 100-651-653-691-262 136-290-473-122-201 053-715-936-953-477 044-901-852-908-583 001-161-249-075-74X 041-879-360-533-968 191-711-892-784-135 068-009-266-491-870 193-873-520-011-451 068-821-920-534-36X 151-235-946-311-785 061-105-004-192-040 025-692-231-722-017 188-197-177-506-534 103-402-901-940-232 074-553-623-228-285 130-397-806-738-47X 079-165-355-142-326 189-146-200-893-840 122-189-993-609-975 160-241-751-379-525 172-578-012-568-946 171-980-849-644-057 066-397-041-061-364 104-726-214-060-820 057-255-662-086-476 013-665-332-357-689 058-910-724-235-903 112-525-545-235-380 027-933-810-331-552 152-365-351-486-772 029-403-419-708-382 078-150-560-915-852 018-107-307-955-586 004-417-248-389-304 199-911-836-771-900 069-792-920-714-869 138-918-532-811-300 108-044-256-782-079 073-620-216-868-200 179-785-237-643-886 062-491-083-905-794 080-178-027-037-699 054-795-885-831-865 030-812-408-990-303 145-738-213-203-661 195-464-853-772-799 145-257-994-623-134 142-290-695-319-023 007-415-551-098-26X 172-386-281-753-705 194-604-930-833-782 142-862-928-259-502 171-866-650-109-904 011-699-683-411-299 076-045-187-171-797 162-691-026-674-477 043-172-207-015-48X 037-172-504-096-207 159-154-989-628-244 137-162-653-596-156 015-304-367-897-836 122-259-098-076-819 084-181-853-990-37X 005-647-662-144-871 150-509-555-663-950 053-700-727-281-449 087-582-593-678-852 125-032-567-337-659 066-026-306-899-443 083-049-651-016-136 197-875-959-103-103 183-067-965-205-612 011-447-726-100-028 058-912-553-525-277 185-206-144-968-524 037-425-460-991-711 050-385-112-518-001 025-141-743-997-638 185-157-730-349-111 095-131-695-598-180 145-313-354-188-465 033-599-392-929-186 107-203-542-262-962 072-176-565-097-921 053-951-959-224-853 113-470-156-038-51X 120-057-469-573-219 122-633-865-880-558 050-191-924-845-299 176-826-495-320-261 196-084-917-315-696 006-632-926-779-26X 180-238-401-509-05X 164-668-054-757-007 056-973-602-368-56X 184-427-526-707-71X 049-960-262-785-802 147-192-521-216-983 134-537-323-153-941 027-521-931-635-447 046-614-531-728-144 098-926-233-642-536 085-086-820-348-576 073-880-375-673-663 046-023-233-534-216 014-309-985-309-663 087-385-296-098-066 052-085-090-650-658 139-777-337-985-866 028-733-839-324-241 068-699-501-183-87X 198-400-375-292-470 082-774-159-216-553 071-672-146-242-772 083-958-051-837-828 090-353-220-370-264 014-109-760-455-68X 107-986-939-673-923 154-340-787-332-848 027-186-600-115-070 033-216-051-154-49X |
| Patent ID | 3251646 |
| Inventor/Author | Fujita Masaya |
| IPC | A61F13/15 A61F13/49 A61F13/496 |
| Status | Active |
| Simple Family | 152-365-351-486-772 014-109-760-455-68X 145-257-994-623-134 013-665-332-357-689 172-560-254-625-311 023-157-636-483-950 025-692-231-722-017 138-053-973-172-807 198-400-375-292-470 185-206-144-968-524 |
| CPC (with Group) | B29C65/086 A61F13/15 A61F13/49 A61F13/496 B29C66/1122 B29C66/21 B29C66/41 B29C66/433 B29C66/7294 B29C66/81429 B29C66/81433 B29C66/83413 B29C66/83415 B29C66/83511 B29L2031/4878 A61F13/49011 A61F13/15699 A61F13/15723 A61F13/4902 A61F13/5123 A61F2013/15886 B32B37/144 |
| Issuing Authority | United States Patent and Trademark Office (USPTO) |
| Kind | Patent Application Publication |
