Adhesive Tape Package With Segmented Sealing For Easy Opening

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Solution Overview

Problem

Existing adhesive tape packages face difficulties in easy opening and handling due to the thin and soft nature of the release sheet, requiring significant force to open and often resulting in waste of the package components.

Innovation Solution

A pressure-sensitive adhesive tape package design with a first and second portion of the release sheet sealed along specific edges, allowing for easy opening by concentrating force on corners, and temporary attachment points along the sealed portions to facilitate exposure of the adhesive agent layer without adhering to the release sheet.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If the release sheet is made thin and soft for flexibility, then it can conform to the adhesive tape, but it becomes difficult to handle and requires significant force to open the package

Engineering Contradiction:

Improveflexibility of release sheetVSAvoidease of opening package

Core Design Contradiction:

Adaptability or versatilityVSEase of operation

Solution Approach 1:

The package is divided into multiple sealed portions (first sealed portion along first edge, second sealed portion along second edge, third sealed portion along third edge) that are spaced from the corresponding edges. This segmentation allows the package to be opened by concentrating force on specific corner points rather than requiring force distribution across the entire sealed perimeter, making it easier to open while maintaining a thin and soft release sheet

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The extending portion of the adhesive tape is temporarily attached to the release sheet at positions adjacent to the sealed portions before use. This preliminary attachment creates a mechanical interlock that facilitates package opening by providing a starting point for peeling, reducing the force needed to initiate opening while maintaining the flexibility of the thin release sheet

Inventive Principle:

Principle #10Preliminary action

2Area of stationary object

If the sealed portions are positioned close to the edges for compact packaging, then the package size is reduced, but it becomes difficult to open as force disperses along linear sealed portions

Engineering Contradiction:

Improvepackage sizeVSAvoidease of opening package

Core Design Contradiction:

Area of stationary objectVSEase of operation

Solution Approach 1:

Instead of a single continuous sealed portion extending to the edges, the sealing is segmented into multiple portions (first, second, and third sealed portions) that are spaced from the corresponding edges. This creates discrete sealing zones that concentrate opening force at corner points where the sealed portions intersect, making opening easier while maintaining compact package dimensions

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The sealed portions are positioned asymmetrically with respect to the package edges, creating corner points that serve as natural opening initiation points. This asymmetric positioning allows force to concentrate at specific geometric features rather than being distributed uniformly, facilitating easier opening while maintaining a compact overall package size

Inventive Principle:

Principle #4Asymmetry

3Device complexity

If the adhesive tape is folded with adhesive agent layer facing outwardly, then the release sheet functions as the package eliminating the need for a separate package, but the adhesive agent layer may adhere to the release sheet during handling

Engineering Contradiction:

Improvepackage structureVSAvoidhandling without adhesion

Core Design Contradiction:

Device complexityVSEase of operation

Solution Approach 1:

The extending portion of the adhesive tape is temporarily attached to the release sheet at positions adjacent to the sealed portions, but the adhesive agent layer itself is kept separate from the release sheet. This extraction of the adhesive layer from direct contact with the release sheet prevents unwanted adhesion during handling while maintaining the integrated package structure

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The temporary attachment of the extending portion to the release sheet acts as an intermediary mechanism that secures the adhesive tape in place during handling without requiring the adhesive agent layer to adhere to the release sheet. This intermediary attachment prevents direct contact between the adhesive layer and release sheet, eliminating adhesion issues while maintaining package integrity

Inventive Principle:

Principle #24Intermediary (Mediator)

Data Source

PatentUS9492338B2Pressure-sensitive adhesive tape package

Publication Date: 2016.11.15 HISAMITSU PHARM CO INC

AI summary

A novel pressure-sensitive adhesive tape package easy to open and easy in application of an adhesive tape is disclosed. The pressure-sensitive adhesive tape package 10 according to the present invention includes an adhesive tape 14 that accommodates a support 18 and an adhesive agent layer 12 provided on one surface of the support 18, and a release sheet 16 releasably attached to the adhesive agent layer 12. Moreover, the release sheet 16 is folded with the adhesive tape 14, and the adhesive tape 14 is sealed inside of the folded release sheet 16. A plurality of temporary attach portions 50 to 54 spaced from each other is provided in a half of the adhesive agent layer 12 in the adhesive tape 14 to securely expose the half when the release sheet 16 is opened.