Biodegradable Binding Tape Retaining Mechanism

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Solution Overview

Problem

Biodegradable binding tapes are prone to damage when used in plier-type binding devices due to the pointed tip of the tape holding plate entering the tape receiving plate, causing tears.

Innovation Solution

The binding device incorporates a tape retaining mechanism with a rubber-based tape receiving plate that absorbs shock and a flat pressing surface on the tape holding plate to prevent damage, along with a non-adhesive sheet to prevent sticking issues, allowing for the use of biodegradable tapes without tearing.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a pointed tip end portion of the tape holding plate is used to retain the binding tape, then the tape retaining mechanism can effectively hold the tape, but the biodegradable tape may be damaged (torn) because it is more fragile than non-biodegradable tape

Engineering Contradiction:

Improvetape retention reliabilityVSAvoidtape integrity

Core Design Contradiction:

ReliabilityVSStrength

Solution Approach 1:

The tip end portion of the tape holding plate is changed from a pointed shape to a rounded shape with a radius of curvature of 0.5mm or more. This parameter change eliminates the stress concentration point that causes tearing of fragile biodegradable tape, while still maintaining the ability to effectively retain the tape between the tape holding plate and tape receiving plate.

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

Only the tip end portion of the tape holding plate that contacts the binding tape is modified to have a rounded shape, while the rest of the tape holding plate structure remains unchanged. This localized modification preserves the overall functionality of the tape retaining mechanism while preventing damage to the tape at the critical contact point.

Inventive Principle:

Principle #3Local quality

2Ease of operation

If the tape holding plate operates with a pointed tip to enter the tape receiving plate, then the tape retaining mechanism can function properly, but shock is transmitted to the biodegradable tape causing damage

Engineering Contradiction:

Improvetape retaining mechanism operationVSAvoidshock damage to tape

Core Design Contradiction:

Ease of operationVSObject-affected harmful factors

Solution Approach 1:

The tip end portion of the tape holding plate is pre-designed with a rounded shape to cushion the impact before contact with the biodegradable tape. This beforehand cushioning design prevents shock transmission during the operation of the tape retaining mechanism, eliminating the harmful effect of impact on the fragile tape while maintaining proper mechanism operation.

Inventive Principle:

Principle #11Beforehand cushioning (Prior cushioning)

3Device complexity

If a rigid tape receiving plate is used to retain the binding tape, then the retention mechanism is structurally simple, but it causes damage to fragile biodegradable tape during operation

Engineering Contradiction:

Improvetape receiving plate structureVSAvoidtape integrity

Core Design Contradiction:

Device complexityVSStrength

Solution Approach 1:

The tape receiving plate is changed from a rigid structure to an elastic body structure. This parameter change in material properties allows the tape receiving plate to deform elastically during operation, absorbing impact and preventing damage to fragile biodegradable tape while maintaining a relatively simple structural design.

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The tape receiving plate is designed as an elastic body that can flex and deform during operation. This flexible design allows the structure to adapt to the forces applied during tape retention and release, preventing damage to the tape while maintaining structural simplicity through the use of elastic material properties rather than complex mechanisms.

Inventive Principle:

Principle #30Flexible shells and thin films

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 solution effectively prevents damage to biodegradable binding tapes by absorbing shock and preventing sticking, enabling reliable binding and use of fragile tapes in the binding device.

Implementation Method 1

the tape receiving plate is formed by an elastic body

Methodology Applied

Scientific EffectShock absorption: Elasticity

Data Source

PatentUS11292626B2Binding device

Publication Date: 2022.04.05 NICHIBAN CO LTD

AI summary

A binding device that prevents damage to binding tape including a biodegradable material as a base material comprises a pressing surface formed on a resin attachment which is detachably mounted on a head of a tape holding plate, and therefore it is possible to mount an attachment of a shape and material suitable for binding tape to be used. Furthermore, because the tape receiving plate is formed by a rubber plate, the tape receiving plate is able to absorb a shock generated by the pointed end of the tape holding plate entering the tape receiving plate. With this arrangement, it possible to prevent damage to fragile binding tape including a biodegradable material as a base material.