Segmented Bag Sealing Tape for Reusable Banding
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Solution Overview
Problem
Conventional bag sealing tapes are difficult to open without damaging the banded object or requiring separation for disposal, as they often require strong adhesive forces that make peeling challenging and lead to torn bags or excessive effort.
Innovation Solution
A bag sealing tape with alternating adhesion and non-adhesion zones, where the peeling strength between adhesion zones is lower than the adhesion strength to the base film, allowing for easy opening and re-use, and a banding device with a cutting mechanism to adjust non-adhesion zone lengths for user convenience.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a single-sided pressure sensitive adhesive tape is used to band the bag neck, then the bag can be sealed, but the tape cannot be peeled off easily and often damages the bag or requires cutting
Solution Approach 1:
The adhesive tape is segmented into alternating adhesion zones and non-adhesion zones along its length. The adhesion zones provide strong bonding to seal the bag, while the non-adhesion zones create easy-to-grip sections that allow users to peel off the tape without damaging the bag. This segmentation resolves the contradiction by distributing different functional properties along the tape's length.
Solution Approach 2:
Different zones of the tape have different adhesive properties: adhesion zones with pressure-sensitive adhesive for strong bonding, and non-adhesion zones without adhesive for easy gripping and peeling. This local differentiation of quality allows the tape to simultaneously achieve reliable sealing and easy opening.
2Ease of operation
If a resin-made banding material with metal core body is used, then the banding can be unraveled for opening, but separation of resin and wire is required for proper disposal
Solution Approach 1:
The metal core body is extracted and removed from the adhesive tape structure. The tape consists only of a paper or plastic substrate with adhesive zones, eliminating the need for metal-resin separation during disposal while maintaining the ability to unravel and reuse the banding material.
Solution Approach 2:
The adhesive tape is designed to be fully reusable through unraveling, and when disposed of, the entire tape can be discarded as a single material type (paper or plastic) without separation, simplifying waste management while maintaining operational flexibility.
3Ease of operation
If the peeling strength between adhesion zones is lower than adhesion strength to base film, then the tape can be easily peeled for re-use, but the adhesive force must be precisely controlled
Solution Approach 1:
The adhesive strength parameter is precisely controlled and differentiated between two interfaces: the adhesion between adhesive zones has lower strength (for easy peeling) while the adhesion between adhesive layer and base film has higher strength (for reliable bonding). This parameter differentiation enables easy reusability while maintaining sealing reliability.
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 the tape to be repeatedly used without damaging the banded object, facilitating easy opening and re-banding, while eliminating the need for separation during disposal, thus improving user convenience and operational efficiency.
Implementation Method 1
Adhesion layers forming adhesion zones are adhered to a surface of a base film
Implementation Method 2
a peeling strength (A) required for separating the two is preferably smaller than an adhesion strength (B) between one of the adhesion layers and the base film
Data Source
AI summary
A bag sealing tape which can be repeatedly used without damaging a banded object such as a bag or the like when the object is opened, and which does not have to be separated for disposal; and a banding device and a banding method using the bag sealing tape. The bag sealing tape includes adhesion zones and non-adhesion zones, and the adhesion zones are disposed on the surface of a base film in a stepping stone manner in a length direction of the base film.