Invention Grant
- Patent Title: Flexible packaging structure with built-in tamper-evidence features and method for making same
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Application No.: US17481788Application Date: 2021-09-22
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Publication No.: US11613066B2Publication Date: 2023-03-28
- Inventor: Scott William Huffer
- 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: B29C59/00
- IPC: B29C59/00 ; B65D75/58 ; B29L9/00

Abstract:
A flexible packaging laminate has built-in opening/reclose and tam per-evidence features by forming the laminate from an outer structure joined in face-to-face relation to an inner structure. Score lines are formed in both structures to enable an opening to be formed through the laminate by lifting a flap or the like out of the plane of the laminate. The score line through the outer structure defines a larger opening than the score line through the inner structure, such that a marginal region of the outer structure extends beyond the edge of the opening portion of the inner structure. A pressure-sensitive adhesive is used to re-adhere the marginal region to an underlying surface of the inner structure adjacent the opening through the laminate. The outer score line includes at least one tab positioned within a heat seal region of the laminate.
Public/Granted literature
- US20220001593A1 FLEXIBLE PACKAGING STRUCTURE WITH BUILT-IN TAMPER-EVIDENCE FEATURES AND METHOD FOR MAKING SAME Public/Granted day:2022-01-06
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