Invention Grant
- Patent Title: Flexible laminate structure with integrated one-way valve
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Application No.: US18327366Application Date: 2023-06-01
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Publication No.: US12072029B2Publication Date: 2024-08-27
- Inventor: Donald Gregory Taylor
- Applicant: SONOCO DEVELOPMENT, INC.
- Applicant Address: US SC Hartsville
- Assignee: SONOCO DEVELOPMENT, INC.
- Current Assignee: SONOCO DEVELOPMENT, INC.
- Current Assignee Address: US SC Hartsville
- Agency: Nelson Mullins Riley & Scarborough LLP
- Main IPC: F16K15/14
- IPC: F16K15/14 ; B65D77/22 ; F16K17/164

Abstract:
The invention is directed to a one-way valve for a flexible package which comprises a first film layer having at least one first cut line and a second film layer having at least one second cut line, wherein the lines are offset from one another. An adhesive layer is disposed between the film layers. The film layers and the adhesive layer define a valve area wherein the first film layer and the second film layer are not permanently adhered to each other. The second cut line fluidly connects the interior of the flexible package to the valve area and the first cut line fluidly connects the valve area to the ambient atmosphere surrounding the flexible package. The adhesive pattern within the valve area creates a gas flow channel from the second cut line toward the first cut line.
Public/Granted literature
- US20230375097A1 FLEXIBLE LAMINATE STRUCTURE WITH INTEGRATED ONE-WAY VALVE Public/Granted day:2023-11-23
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