Resealable flow-wrap pack for wet wipes
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Solution Overview
Problem
Existing flow-wrap packs for wet wipes require complex removal systems involving die cuts and labels, making it difficult for users to remove single items conveniently and reclose the pack effectively, especially when multiple items are packaged.
Innovation Solution
A flow-wrap pack design featuring an extended fin seal that serves as a protective flap for a scored tear line, allowing single-handed operation, and a resealable strip with adhesive means, such as Velcro or pressure-sensitive adhesive, to facilitate easy opening and reclosing without the need for die cuts or labels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a complex removal system with die cuts and labels is used, then the pack can be reclosed after removing an item, but the operation becomes difficult and requires two hands
Solution Approach 1:
The fin seal is segmented into a scored portion and an extended portion, where the scored portion allows easy tearing for opening while the extended portion provides a flap for reclosing. This segmentation enables both reliable reclosing and simple single-handed operation by separating the opening and reclosing functions into distinct structural zones.
Solution Approach 2:
The extended fin seal flap serves dual purposes: it protects the tear line when closed and acts as a handle for reclosing after opening. The structure is self-sufficient, requiring no additional labels or complex mechanisms, and can be operated with one hand by simply folding the extended flap back into place.
2Reliability
If die cut operation and label application are implemented, then reclosing is enabled, but the manufacturing process becomes more complex
Solution Approach 1:
The fin seal structure merges multiple functions into a single integrated component: sealing, protection of the tear line, and reclosing capability. By combining these functions into the extended fin seal itself, the patent eliminates the need for separate die cut operations and label applications, simplifying the manufacturing process while maintaining reliable reclosing functionality.
Solution Approach 2:
The extended fin seal serves multiple functions simultaneously: it acts as a seal, a protective cover for the tear line, and a reclosing mechanism. This multi-functionality reduces the number of separate components and operations needed, making the packaging process simpler and more efficient while ensuring reliable reclosing.
3Ease of operation
If the fin seal is extended to cover the tear line, then the tear line is protected and single-handed operation is enabled, but the seal length increases
Solution Approach 1:
The fin seal is pre-scored at a specific location during manufacturing, creating a predetermined tear line. This preliminary scoring allows the seal to be easily torn open by hand without requiring excessive force or complex mechanisms. The extended portion beyond the score provides the necessary flap for protection and reclosing, balancing the increased length with functional benefits.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables convenient single-handed removal and reclosure of wet wipes, reducing moisture exposure and eliminating the need for die cuts and labels, thus enhancing user experience and packaging efficiency.
Implementation Method 1
The resealable strip comprises means allowing the reclosing of the flow wrap pack. Said means may be a Velcro®, a fracture hot melt, a pressure sensitive adhesive or glue dots.
Data Source
Figure 1
Figure 2
Figure 3A
AI summary
The present invention relates to a flow-wrap pack (1) for wet wipes. The flow-wrap pack (1) has a film (3) defining a front wall (5) and a back wall (7), a longitudinal sealed seam in the form of a fin seal (9) and two transverse sealed seams (11) defining a product space. The fin seal (9) has an extended length and lies essentially flat against the back wall (7) of the wrap pack, thereby covering a scored tear line (13) and a resealable strip (15), said strip (15) extending between the transverse sealed seams (11) at an essentially right angle to the transverse sealed seams (11).