Invention Grant
- Patent Title: Flexible packaging structure with built-in tamper-evidence features and method for making same
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Application No.: US17970691Application Date: 2022-10-21
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Publication No.: US11858195B2Publication Date: 2024-01-02
- Inventor: Benjamin Davis , 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
- The original application number of the division: US15974055 2018.05.08
- Main IPC: B29C59/00
- IPC: B29C59/00 ; B65D75/58 ; B29L9/00

Abstract:
A flexible packaging laminate has built-in opening/reclose and tamper-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 tear portion that is torn through upon initial opening, thus indicating the package has been at least partially opened.
Public/Granted literature
- US20230041551A1 FLEXIBLE PACKAGING STRUCTURE WITH BUILT-IN TAMPER-EVIDENCE FEATURES AND METHOD FOR MAKING SAME Public/Granted day:2023-02-09
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