Stretch Layered Sheet, Disposable Wearing Article, and Manufacturing Method and Device
Summary
USPTO granted Patent US12599513B2 to ZUIKO CORPORATION on April 14, 2026. The patent covers a stretch layered sheet with thermal bonding between non-woven fabrics and film, featuring vents that provide air permeability in both stretched and non-stretched states. The invention also includes methods and devices for manufacturing the stretch layered sheet.
What changed
USPTO granted Patent US12599513B2 to ZUIKO CORPORATION on April 14, 2026. The patent covers a stretch layered sheet design incorporating multiple attachment portions where pairs of non-woven fabrics and film are thermally bonded, with boundary lines defining thermal bonding areas. The invention includes first vents that open during film stretching along boundary lines and second vents defined by film openings adjacent to thermal bonding areas, both providing air permeability in stretched and non-stretched states.
Affected parties including manufacturers of disposable absorbent products should monitor this patent for potential licensing considerations or to assess freedom-to-operate for similar stretchable layered sheet technologies used in diapers, adult incontinence products, or similar disposable wearing articles.
What to do next
- Monitor for updates
Archived snapshot
Apr 14, 2026GovPing captured this document from the original source. If the source has since changed or been removed, this is the text as it existed at that time.
Stretch layered sheet, disposable wearing article, and method and device for manufacturing stretch layered sheet
Grant US12599513B2 Kind: B2 Apr 14, 2026
Assignee
ZUIKO CORPORATION
Inventors
Kazutoshi Makimura, Miwa Koshijima
Abstract
The present layered stretchable sheet includes: a plurality of attachment portions at which a pair of non-woven fabrics and a film are thermally bonded together, wherein each one of the attachment portions includes at least one thermal bonding area where the pair of non-woven fabrics and the film are thermally bonded together; at least one boundary line that defines the thermal bonding area; a first vent that is defined by a first opening of the film appearing in a stretched state of the film along the boundary line and that exerts air permeability; and a second vent that is defined by a second opening where a part of the film is absent, the second opening being adjacent to the thermal bonding area and being delimited by the boundary line, wherein the second vent exerts air permeability both in the stretched state and in a non-stretched state.
CPC Classifications
A61F 13/15699 A61F 13/49 A61F 13/4902 A61F 13/15 A61F 13/15203 A61F 13/15682 A61F 13/15707 A61F 13/15764 A61F 13/51 A61F 13/5146 A61F 13/51478 A61F 13/515 A61F 2013/15878 A61F 2013/51026 A61F 2013/51452 B29C 66/344 B29C 66/7294 B29C 65/086 B29C 66/41 B29C 66/81429 B29C 66/81433 B29C 66/83415 B29C 66/83511 B29C 48/08 B32B 27/12 B32B 5/022 B32B 2307/51 B32B 2307/724 B32B 2555/02
Filing Date
2021-10-08
Application No.
18033862
Claims
20
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