Sealing Sheet Tearing Lines for Glue-Free Container Access
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Solution Overview
Problem
Existing sealing sheets for pill containers do not provide easy, safe, and clean access to the containers, as they require breaking or peeling, which can lead to pills coming into contact with adhesive glue, and the flanges may still have glue, allowing for accidental reclosure.
Innovation Solution
The improved sealing sheet features tearing lines on the top layer that extend from one side of cover pieces to opposite sides of the bottom pieces, allowing for easy peeling without leaving glue on the flanges, and includes U-shaped recesses and pulling tabs to facilitate access, ensuring the flanges remain covered and preventing accidental contact with adhesive.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the sealing sheet is made with a bottom layer that is peeled off to allow access to containers, then easy access to containers is achieved, but adhesive glue remains on the flanges which can contaminate pills and allow accidental reclosure
Solution Approach 1:
The sealing sheet is divided into a top layer and a bottom layer that can be separated. The bottom layer is peeled off to provide access to containers, while the top layer remains attached to the flanges, preventing adhesive contamination of pills and blocking accidental reclosure.
Solution Approach 2:
The bottom layer is extracted or removed from the sealing sheet structure, allowing it to be peeled off separately. This extraction enables the top layer to remain as a protective barrier on the flanges while the bottom layer provides access functionality.
2Ease of manufacture
If the sealing sheet is made of paper with pressure sensitive adhesive, then easy application and removal is achieved, but pills may come into contact with adhesive glue during access
Solution Approach 1:
The sealing sheet is segmented into two functional layers: a top layer that remains attached to provide protection and a bottom layer that is removed for access. This segmentation ensures that the adhesive function is separated from the access function, preventing pill contamination.
Solution Approach 2:
The bottom layer containing the adhesive interface is extracted and removed during the access process, taking the potential contamination risk away from the pills while maintaining the ease of application and removal benefits.
3Ease of operation
If tearing lines are provided on the sealing sheet, then easy separation is achieved, but the flanges still have glue remaining which allows reclosure
Solution Approach 1:
The sealing sheet is segmented into top and bottom layers with tearing lines. When separated, the top layer remains on the flanges providing both easy separation through tearing lines and continued protection against reclosure, while the bottom layer is fully removed.
Solution Approach 2:
Instead of having the entire sealing sheet removable and then attempting to block reclosure, the solution inverts the approach by having the protective layer (top layer) remain attached while the access layer (bottom layer) is removed. This ensures protection is maintained while enabling access.
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
This design allows for safe and clean access to the contents of the containers while preventing pills from contacting the adhesive, reducing the risk of accidental reclosure and ensuring the flanges remain glue-free, enhancing user safety and convenience.
Implementation Method 1
a bottom layer detachably fixed to the lower surface of the top layer by means of the adhesive glue
Data Source
AI summary
Disclosed is an improved sealing sheet for use to close a container-defining sheet having a top surface comprising a given number of spaced apart cavities embossed therein, each of the cavities being upwardly opened and thus defining a container that is surrounded by a flange that is part of the top surface of the container-defining sheet. This improved sealing sheet has a top layer with tearing lines punched therein in such a manner and position as to extend from one side of each cover piece that may be splitted from the sealing sheet to cover one of the cavities in line with opposite sides of a bottom piece left on the corresponding cover piece. Such facilitates peeling of the bottom piece and of the corresponding part of the cover piece from the corresponding container to have access to the element(s) stored in it while preventing glue to be left on the flanges that surround the top opening of the container since such flanges are then still covered by non splitted parts of the sealing sheet.