Multi-purpose absorbent card
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Solution Overview
Problem
Conventional products made of paper, cardstock, and paperboard lack secondary functionality beyond their primary purpose, leading to increased waste and reduced useful life.
Innovation Solution
Integration of a liquid absorptive sponge cloth into products like greeting cards, postcards, and hang tags, which are constructed from cellulose and cotton fibers, providing semi-rigidity when dry and non-rigidity when saturated, allowing for absorption of liquids and potential secondary uses such as cleaning or crafting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional paper, cardstock, or paperboard is used for cards, then the product serves its primary communication function, but it lacks secondary functionality and generates waste after use
Solution Approach 1:
The card is constructed from sponge cloth material that provides dual functionality: it serves as a communication card (greeting card, postcard, invitation, etc.) and simultaneously functions as a liquid-absorbing sponge for cleaning purposes. This multi-functionality resolves the contradiction by enabling the product to fulfill both its primary communication role and a secondary cleaning role, thereby reducing waste generation.
Solution Approach 2:
The sponge cloth material undergoes parameter changes based on its moisture content: when dry, it maintains a semi-rigid structure suitable for card handling and mailing; when saturated with liquid, it becomes non-rigid and highly absorbent, enabling its cleaning function. This parameter change allows the same material to satisfy contradictory requirements of structural integrity and liquid absorption.
2Adaptability or versatility
If sponge cloth material is used to construct the card, then the card gains liquid absorption capability and secondary cleaning function, but the material must maintain semi-rigidity when dry for proper card handling
Solution Approach 1:
The sponge cloth exhibits parameter changes in its physical properties based on moisture content. When dry, it maintains semi-rigidity for proper card handling, mailing, and storage. When saturated with liquid, it becomes non-rigid and highly absorbent, enabling its cleaning function. This dynamic parameter change resolves the contradiction between structural stability and liquid absorption capability.
Solution Approach 2:
The card's structural properties are dynamic rather than static. The sponge cloth transitions from a semi-rigid state (when dry) to a non-rigid, highly absorbent state (when wet). This dynamic behavior allows the material to adapt to different functional requirements, resolving the contradiction between maintaining structural integrity and enabling liquid absorption.
3Adaptability or versatility
If the sponge cloth is made highly absorbent, then it provides effective cleaning functionality, but it may compromise the tensile strength and structural integrity when wet
Solution Approach 1:
The sponge cloth is designed with specific material parameters that allow it to absorb at least 0.15 quarts of water per square foot while maintaining a maximum tensile strength of at least 2.66 lbs./in. when wet. This parameter optimization resolves the contradiction by achieving high absorbency without compromising the structural strength needed for handling the wet card.
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
Extends the useful life of products by enabling them to serve as sponges for cleaning or other purposes, reducing waste and enhancing their functional lifespan.
Implementation Method 1
The sponge cloth is semi-rigid when substantially dry and is non-rigid upon saturation with liquid water
Implementation Method 2
The sponge cloth is constructed of cellulose and cotton fibers. Additionally or alternatively, the sponge cloth is configured to absorb at least 0.15 quarts of water per square foot
Data Source
AI summary
The technology disclosed herein relates to a card having a liquid absorptive sponge cloth forming a first panel and a second panel. A fold line is defined between the first panel and the second panel. A printed communication is on a first surface of the first panel. The sponge cloth is semi-rigid when substantially dry and is non-rigid upon saturation with liquid water. The sponge cloth has a maximum tensile strength of at least 2.66 lbs./in when wet.