Frictional Washing Surface Bonding for Waterproof Laundry Bags
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Solution Overview
Problem
The existing methods for creating and applying a frictional washing surface to sealable waterproof bags are complex and costly, involving multiple steps and expensive tooling, which complicates the manufacturing process.
Innovation Solution
A method that concurrently creates a frictional washing surface and joins it to the housing material by applying a polymer to the surface, using a tool with void regions and projections to shape the polymer through heat and/or current application, reducing tooling requirements and manufacturing time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the frictional washing surface is produced by injection moulding and then adhered to the housing material, then the washing surface can be effectively created, but the manufacturing process becomes complex and expensive requiring complex tooling and multiple steps
Solution Approach 1:
The patent combines two separate manufacturing operations (creating the frictional washing surface and adhering it to the housing material) into a single concurrent operation. The polymer is applied to the housing material and simultaneously formed into the frictional washing surface shape and bonded to the housing material using heat and/or current, eliminating the need for separate injection molding and adhesion steps.
Solution Approach 2:
The polymer is applied to the housing material surface before the final forming operation. This preliminary application allows the polymer to be in position and ready for simultaneous shaping and bonding, rather than requiring separate preparation of both the housing material and the washing surface component.
2Manufacturing precision
If the frictional washing surface is produced by injection moulding and then adhered to the housing material, then the washing surface can be effectively created, but production time and costs increase due to multiple manufacturing steps
Solution Approach 1:
The patent combines two separate manufacturing operations (creating the frictional washing surface and adhering it to the housing material) into a single concurrent operation. The polymer is applied to the housing material and simultaneously formed into the frictional washing surface shape and bonded to the housing material using heat and/or current, eliminating the need for separate injection molding and adhesion steps.
Solution Approach 2:
The manufacturing process maintains continuous useful action by performing surface formation and adhesion bonding simultaneously in one continuous operation rather than sequentially. The heat and/or current application continuously softens the polymer and bonds it to the housing material while the tool shapes the frictional washing surface, maximizing productive utilization of time and resources.
3Manufacturing precision
If the frictional washing surface is produced by injection moulding and then adhered to the housing material, then the washing surface can be effectively created, but manufacturing costs increase due to expensive tooling requirements
Solution Approach 1:
The patent combines two separate manufacturing operations (creating the frictional washing surface and adhering it to the housing material) into a single concurrent operation. The polymer is applied to the housing material and simultaneously formed into the frictional washing surface shape and bonded to the housing material using heat and/or current, eliminating the need for separate injection molding and adhesion steps.
Solution Approach 2:
The patent extracts the frictional washing surface creation step from the traditional injection molding process and integrates it directly into the adhesion process. This eliminates the need for expensive injection molding tooling while achieving the same washing surface quality through a simpler tooling requirement for the combined operation.
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 significantly reduces production time and costs by eliminating a manufacturing step and allowing for efficient creation and attachment of the frictional washing surface, resulting in a more streamlined and cost-effective production process.
Implementation Method 1
applying heat and/or a current and/or a frequency to the tool to soften the polymer
Implementation Method 2
soften the polymer and allow it to form the shape
Implementation Method 3
The housing material may be placed on a conductive surface to allow conductivity of the heat and/or a current and/or a frequency through the polymer and housing material
Implementation Method 4
positioning a tool on the quantity of the polymer, the tool including a void region containing depressions and/or projections complementary to the shape of the frictional washing surface
Data Source
AI summary
The present invention relates to a method of concurrently creating a frictional washing surface and joining the frictional washing surface to the surface of a housing material for a sealable waterproof bag for washing one or more textile items, the method including: i) applying a quantity of a polymer to the surface of the housing material for the sealable bag; ii) positioning a tool on the quantity of the polymer, the tool including a void region containing depressions and/or projections complementary to the shape of the frictional washing surface; and iii) applying heat and/or a current and/or a frequency to the tool to soften the polymer and allow it to form the shape of the frictional washing surface and concurrently join the frictional washing surface to the housing material for the sealable bag.