PVA Fabric Embossing Without Molds or Heat Pressure

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Solution Overview

Problem

Existing methods for embossing and debossing fabrics require the use of molds and heat/pressure, limiting the ability to create designs without these tools.

Innovation Solution

Applying a composition of at least 90% hydrolyzed polyvinyl alcohol to a fabric in the shape of a design, allowing it to dry, which results in an embossed or debossed effect without the need for molds or heat/pressure.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If mechanical embossing methods using molds and heat/pressure are used, then embossed or debossed effects can be achieved on fabrics, but the process requires complex equipment and cannot easily create designs without molds

Engineering Contradiction:

Improveease of creating embossed designsVSAvoidcomplexity of equipment required

Core Design Contradiction:

Ease of manufactureVSDevice complexity

Solution Approach 1:

The patent replaces the mechanical embossing system (molds, heat, and pressure) with a chemical system using polyvinyl alcohol composition. The PVA composition is applied to the fabric in the desired design pattern, and upon drying, it creates embossed or debossed effects through chemical interaction with the fabric fibers, eliminating the need for mechanical molds and pressure equipment

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The polyvinyl alcohol composition acts as an intermediary substance that transfers the design pattern to the fabric. The PVA composition serves as a mediating agent between the applied design and the fabric surface, creating the embossed effect through its chemical properties rather than through direct mechanical force

Inventive Principle:

Principle #24Intermediary (Mediator)

2Adaptability or versatility

If polyvinyl alcohol composition is applied to fabric to create embossed designs, then mold-free design application is achieved, but the composition must be at least 90% hydrolyzed to ensure proper effect

Engineering Contradiction:

Improveflexibility in design applicationVSAvoidhydrolysis degree requirement

Core Design Contradiction:

Adaptability or versatilityVSManufacturing precision

Solution Approach 1:

The patent specifies a precise parameter threshold for the polyvinyl alcohol composition - it must be at least 90% hydrolyzed. This parameter control ensures that the chemical composition has the appropriate properties to interact with fabric fibers and create the desired embossed effect while maintaining flexibility in design application

Inventive Principle:

Principle #35Parameter changes

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 method effectively creates raised or depressed designs on fabrics, which remain stable through multiple wash/dry cycles and can be applied using various applicators, offering a mold-free and efficient way to achieve artistic effects.

Implementation Method 1

drying the fabric. Upon the fabric drying, the surface of the fabric is embossed and/or debossed in the shape of the design

Methodology Applied

Scientific EffectDrying: Evaporation

Data Source

PatentUS9593443B2Compositions and methods for embossing and debossing fabrics

Publication Date: 2017.03.14 CRAYOLA LLC

AI summary

The present invention provides methods for chemically embossing and debossing fabric. A composition comprising polyvinyl alcohol is applied to fabric in the shape of a design, and the fabric is dried. Upon the fabric drying, the surface of the fabric is embossed and/or debossed in the shape of the design. In particular embodiments, the composition comprises polyvinyl alcohol that is at least about 90% hydrolyzed. A kit for embossing and/or debossing fabric includes a composition comprising polyvinyl alcohol inside of a container, and one or more applicators.