Shoe Component Bonding via Vacuum Suction

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Solution Overview

Problem

The existing method for manufacturing shoes often results in poor bonding between shoe components due to the presence of bubbles and excessive foaming, leading to deformation and poor quality, especially when using foaming materials, as high temperatures are required to accelerate adhesive melting.

Innovation Solution

A method involving the formation of an adhesive member on one shoe component, heating to melt the adhesive, and using air suction to remove air and ensure close adherence, while also employing a pressing unit to tightly bond the components, thereby reducing the need for high temperatures and preventing deformation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If high temperature is used to accelerate adhesive melting, then bonding speed is improved, but foaming material deforms due to excessive foaming

Engineering Contradiction:

Improvebonding speedVSAvoidshape accuracy

Core Design Contradiction:

ProductivityVSManufacturing precision

Solution Approach 1:

The patent changes the pressure parameter during the bonding process by applying vacuum suction to reduce air pressure in the bonding area. This parameter change allows the adhesive to melt and bond at lower temperatures, preventing the foaming material from deforming while still achieving effective bonding.

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent uses pneumatic principles by introducing a vacuum suction device that creates negative pressure in the bonding area. This pneumatic approach removes air bubbles and lowers the pressure environment, enabling adhesive bonding at reduced temperatures and preventing excessive foaming of the material.

Inventive Principle:

Principle #29Pneumatics and hydraulics

2Strength

If high temperature is used to melt adhesive, then adhesive bonding capability is improved, but bubbles form between components causing poor bonding

Engineering Contradiction:

Improvebonding strengthVSAvoidbubble formation

Core Design Contradiction:

StrengthVSObject-generated harmful factors

Solution Approach 1:

The patent employs vacuum suction to create negative pressure in the bonding area, which effectively removes air bubbles between the adhesive and shoe components. This pneumatic approach prevents bubble formation that would otherwise compromise bonding strength, while allowing the adhesive to cure properly.

Inventive Principle:

Principle #29Pneumatics and hydraulics

Solution Approach 2:

The patent changes the pressure parameter by applying vacuum suction, which removes harmful air bubbles from the bonding interface. This parameter change ensures that the adhesive bonds directly to the shoe components without air pockets, improving bonding strength while using lower temperatures.

Inventive Principle:

Principle #35Parameter changes

3Ease of manufacture

If heating plate and heating last are used to thermally activate adhesive films, then bonding process is simplified, but quality deteriorates due to deformation

Engineering Contradiction:

Improveprocess simplicityVSAvoidcomponent quality

Core Design Contradiction:

Ease of manufactureVSManufacturing precision

Solution Approach 1:

The patent introduces vacuum suction as an additional control mechanism during the heating process. This pneumatic approach allows the use of lower temperatures, preventing deformation of foaming materials while maintaining the simplicity of the thermal activation process. The vacuum suction complements the existing heating system rather than replacing it.

Inventive Principle:

Principle #29Pneumatics and hydraulics

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 effectively prevents bubble formation and deformation, enhancing the bonding quality between shoe components by ensuring a vacuum state during the bonding process, which lowers the melting point of the adhesive and prevents foaming, resulting in improved shoe component quality.

Implementation Method 1

heating to melt the adhesive member so as to adhere the first and second shoe components to each other

Methodology Applied

Scientific EffectHeating: Heating

Implementation Method 2

heating to melt the adhesive member

Methodology Applied

Scientific EffectMelting: Melting

Implementation Method 3

suctioning air to adhere the first and second shoe components closely to each other

Methodology Applied

Scientific EffectSuction: Suction

Data Source

PatentUS10477925B2Method of preparing shoe components

Publication Date: 2019.11.19 CHAEI HSIN ENTERPRISE CO LTD

AI summary

A method of preparing shoe components includes the steps of: providing a first shoe component and a second shoe component, forming an adhesive member on one of the first and second shoe components, stacking the first and second shoe components such that the adhesive member is disposed therebetween, heating to melt the adhesive member so as to adhere the first and second shoe components to each other, and suctioning air to adhere the first and second shoe components closely to each other.