Threadlike Adhesive Body Application via Temporary Support

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Solution Overview

Problem

Double-faced adhesive tapes cut to small widths are unsuitable for bonding curved surfaces, prone to twisting, and have poor handleability, while tapes cut into desired shapes by punching require additional processing steps and generate waste, increasing costs. Additionally, cutting adhesive layers with hard particles is difficult.

Innovation Solution

A method for applying a threadlike adhesive body using a temporary-support-supported threadlike adhesive body, where the threadlike adhesive body is applied to a temporary support in a shape reverse to the desired shape and then press-bonded to the adherend, allowing for easy shaping and application without the need for cutting the adhesive layer.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Area of stationary object

If double-faced adhesive tape is cut to small width, then adhesion area width is reduced, but handleability deteriorates and twisting occurs

Engineering Contradiction:
Improveadhesion area widthVSAvoidhandleability
Core Design Contradiction:
Area of stationary objectVSEase of operation

Solution Approach 1:

The adhesive tape is divided into multiple separate adhesive bodies (first adhesive body and second adhesive body) that can be independently positioned and bonded. This segmentation allows each adhesive body to be small in width while maintaining good handleability, as they are applied separately rather than as a single continuous tape that would twist and be difficult to handle when cut to small widths.

Inventive Principle:
Principle #1Segmentation

2Shape

If double-faced adhesive tape is cut into desired shape by punching, then shape accuracy is improved, but processing steps increase and waste increases

Engineering Contradiction:
Improvedesired shapeVSAvoidprocessing efficiency
Core Design Contradiction:
ShapeVSProductivity

Solution Approach 1:

The adhesive bodies are pre-formed into the desired shapes (such as arcs or curves) during the adhesive body formation process itself, rather than requiring subsequent cutting or punching operations. This preliminary shaping action eliminates the need for additional processing steps and reduces waste, as the adhesive bodies are ready for application directly after formation.

Inventive Principle:
Principle #10Preliminary action

3Area of stationary object

If adhesive layer is cut, then adhesion area is reduced, but cutting becomes difficult when hard particles are present

Engineering Contradiction:
Improveadhesion areaVSAvoidcutting ease
Core Design Contradiction:
Area of stationary objectVSEase of manufacture

Solution Approach 1:

The hard particles (such as glass beads or ceramic particles) are extracted from the adhesive layer composition and incorporated into the adhesive bodies during the formation process. This extraction and incorporation ensures that the hard particles are evenly distributed within the adhesive bodies, making the adhesive layer easier to apply and bond without the cutting difficulties that would arise from trying to cut through a layer containing hard particles.

Inventive Principle:
Principle #2Taking out (Extraction)

4Shape

If threadlike adhesive body is applied to form complicated shape, then shape flexibility is improved, but application technique requirement increases

Engineering Contradiction:
Improvecomplicated shapeVSAvoidapplication technique
Core Design Contradiction:
ShapeVSEase of operation

Solution Approach 1:

The adhesive is divided into multiple discrete adhesive bodies that can be independently positioned and bonded to the adherend. This segmentation simplifies the application process compared to applying a continuous threadlike adhesive body, as each adhesive body can be separately placed and secured without requiring complex manipulation techniques to maintain the complicated desired shape.

Inventive Principle:
Principle #1Segmentation

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 method enables easy application of the threadlike adhesive body in complex shapes without the limitations of traditional adhesive tapes, reduces processing costs, and allows for the incorporation of hard particles in the adhesive layer.

Implementation Method 1

a threadlike adhesive body applied to an adherend so as to have a shape reverse to the desired shape is applied by press-bonding a surface thereof where the threadlike adhesive body lies to the adherend

Methodology Applied
Scientific EffectAdhesive: Adhesive

Implementation Method 2

the temporary support may be removed from the threadlike adhesive body by peeling

Methodology Applied
Scientific EffectPeel adhesive force: Adhesive

Data Source

PatentUS12331222B2Method for applying a threadlike adhesive body, and temporary-support-supported threadlike adhesive body
Publication Date: 2025.06.17 NITTO DENKO CORP
  • US12331222B2 patent drawing
  • US12331222B2 patent drawing
  • US12331222B2 patent drawing

AI summary

The present invention relates to a method for applying a threadlike adhesive body to an adherend so that the applied threadlike adhesive body has a desired shape, the method including a step in which a temporary-support-supported threadlike adhesive body including a temporary support and the threadlike adhesive body applied thereto so as to have a shape reverse to the desired shape is applied by press-bonding a surface thereof where the threadlike adhesive body lies to the adherend.