Folded Closure Tape Tab for Diaper Roll Stability
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Solution Overview
Problem
There is a need for a closure tape tab for absorbent articles that can be supplied as a prelaminated closure tape in a stable roll form without additional components or treatment steps, allowing for efficient storage and use in diaper manufacturing lines.
Innovation Solution
A folded closure tape tab design with a proximal end portion and a distal end portion connected by an inner tab portion, where the distal end portion is folded back on itself to cover part of the inner tab's surface, incorporating a mechanical fastener and optional fingerlift, and a release tape for secure attachment, enabling level-winding without additional components or treatments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the closure tape is supplied in roll form for storage and use in manufacturing lines, then storage efficiency and manufacturing convenience are improved, but the roll becomes unstable and adhesive layers cause blocking between tape layers
Solution Approach 1:
The patent extracts the problematic adhesive contact issue by introducing a release tape layer that separates adjacent tape layers in the roll. This release tape prevents the adhesive layers from bonding to each other during storage, eliminating the blocking problem while maintaining roll stability and storage efficiency.
Solution Approach 2:
The release tape acts as an intermediary element between the adhesive layers of adjacent tape layers. This intermediary prevents direct adhesive-to-adhesive contact that would cause blocking, allowing the roll to be stored stably without compromising the adhesive functionality when the tape is used.
2Stability of the object's composition
If additional components or treatment steps are added to prevent adhesive blocking in roll form, then roll stability is improved, but device complexity and manufacturing steps increase
Solution Approach 1:
The release tape is merged with the closure tape structure itself, forming an integrated laminate that includes the backing, adhesive layer, and release tape as a single unit. This integration eliminates the need for separate components or additional treatment steps, reducing manufacturing complexity while ensuring roll stability.
Solution Approach 2:
The release tape is applied in advance during the tape manufacturing process, before the tape is wound into rolls for storage and distribution. This preliminary action ensures that the adhesive layers are pre-protected against blocking, eliminating the need for additional protective measures during storage or handling.
3Reliability
If the adhesive layer is exposed on the inner tab portion, then fastening functionality is improved, but adhesive contact between tape layers in the roll causes blocking
Solution Approach 1:
The patent converts the potentially harmful adhesive exposure issue into a benefit by using the same adhesive layer for both its fastening function and its protective function. The adhesive is exposed on the inner tab for fastening, while the release tape protects other adhesive areas from blocking, allowing the adhesive to serve multiple purposes without compromise.
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
The design allows for increased storage capacity of closure tape on a roll, improved stability of the roll, and easy handling during manufacturing, with the folded distal end portion preventing adhesive contact between tape layers, facilitating easy unwinding and reducing the risk of blocking.
Implementation Method 1
The distal end portion is folded back on itself toward the proximal end portion such that at least a part of the first major surface of the inner tab portion in the area of the space is covered by the folded part of the distal end portion
Implementation Method 2
The closure tape tab comprises a proximal end portion and a distal end portion which are connected by an inner tab portion... The opposite end portion, e.g., the distal end portion, of the closure tape tab comprises a fastening means (e.g., a pressure sensitive adhesive layer or a mechanical fastener component)
Data Source
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AI summary
The present invention relates to a closure tape tab for an absorbent article, particularly for a disposable diaper, for fastening the article on the body of a person. The closure tape tab comprises a proximal end portion and a distal end portion being connected by an inner tab portion, wherein the inner tab portion has a first major surface and a second major surface. The proximal and distal end portions are connected to the inner tab portion and the first major surface thereof such that opposing ends of the proximal and distal end portions are spaced apart from each other. The distal end portion is folded over toward the proximal end portion such that at least a part of the first major surface of the inner tab portion in the space is covered. The proximal end portion is preferably not folded. The present invention furthermore relates to a prelaminated closure tape, preferably in a stable roll, from which such closure tape tabs can be cut. The closure tape of the present invention is adapted to be level-wound on a roll so that an increased amount of tape can be stored on the roll.