Food Portion Wrapper Tear-Line Structure for Easy Opening
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Solution Overview
Problem
Existing packaging solutions for fresh dairy products, particularly those containing soft portions like creamy cheese, face challenges in balancing ease of opening, especially for young children, with the need for robust sealing, which often requires significant effort and can lead to deformation of the contents.
Innovation Solution
A flan design with folding lines forming an envelope, featuring peelable tabs and tear lines that allow easy opening by pulling on opposite edges without deforming the contents, combined with a cellulose-based outer layer for eco-friendly recycling and a plastic inner layer for sealing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the flan uses a robust sealing layer with oxygen and water vapor barrier properties to ensure preservation, then the sealing reliability is improved, but the ease of opening deteriorates
Solution Approach 1:
The opening tab is divided into a first tab portion and a second tab portion separated by a tear initiation zone. This segmentation allows the packaging to be opened in two stages: first by peeling the tabs apart to initiate a tear, then by propagating the tear along predetermined tear lines. This resolves the contradiction by providing both strong sealing (the tabs remain attached during normal use) and easy opening (the segmented structure enables simple tearing motion).
Solution Approach 2:
The packaging structure includes pre-formed fold lines and tear lines that are created during manufacturing. The fold lines prepare the flaps for folding, and the tear lines guide the opening process. This preliminary preparation allows the consumer to open the packaging easily without needing to apply excessive force or perform complex actions, while the sealing remains intact during normal handling.
2Ease of operation
If significant initial effort is applied to tear the strips on the tab/hem association, then the sealing is broken for opening, but the soft food portion deforms and becomes difficult to extract
Solution Approach 1:
The tear initiation zone acts as an intermediary element between the first tab portion and the second tab portion. It is designed with reduced bonding strength or a physical discontinuity that allows easy separation. When the consumer pulls the tabs apart, the tear initiates at this intermediate zone and propagates along the predetermined tear lines, providing a controlled opening path that requires minimal force and prevents deformation of the soft food portion.
3Ease of operation
If the packaging is opened along the entire length of the flan, then the opening is achieved, but the unwrapped portion falls out since it is no longer held by the flan
Solution Approach 1:
The packaging structure applies different qualities to different regions: the seal lines provide strong bonding for containment, while the tear lines provide controlled separation paths. The fold lines create hinges that allow the flaps to fold back without compromising the seal. This local differentiation of bonding strength and structural properties allows the packaging to remain contained during normal use while enabling easy opening along specific paths without causing the food portion to fall out.
Data Source
Figure 1a~1b
Figure 2a~2b
Figure 2c~2d
AI summary
The invention relates to a blank cut for packaging a portion of food (3), the blank cut comprising fold lines (1a, 1b, 1c) which define a lower panel (5) and two side flaps (6), each having a side panel (7) and an upper segment (8), the segments being arranged to together form an upper wall with each segment being provided with an opening tab (9) having a base (9a), each of said bases being arranged so as to be associated with one another such that they peel off when the opening tabs (9) are pulled, each flap (8) having two tear lines (10) which each extend from an edge of the base (9a) of the tab (9) along the upper panel segment (8) and the side panel (7), the lower panel (5) being devoid of a tear line.