Foamed PVC Mounting Material for Adhesive-Free Wall Attachment
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Solution Overview
Problem
Existing methods for mounting objects on smooth, impervious surfaces either rely on adhesives, which can be difficult to remove without damage, or expensive electrostatic systems, lacking a cost-effective and adhesive-free solution for securely attaching and supporting weights.
Innovation Solution
A foamed polyvinyl chloride material with a flexible, unfoamed PVC skin and small cavities on one side, combined with an adhesive layer on the opposite side, uses a pressure differential to adhere to surfaces, allowing secure attachment and weight-bearing capabilities without adhesives.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If adhesive strips are used to mount objects on walls, then the mounting is secure and reliable, but the adhesive can be difficult to remove without damage and leaves residue
Solution Approach 1:
The patent replaces the chemical adhesive system with a mechanical suction system. The foam material creates a vacuum seal through its cellular structure that mechanically holds the poster in place without chemical bonding, allowing for easy removal without damage or residue while maintaining secure mounting during use
Solution Approach 2:
The patent employs pneumatic principles by creating a vacuum seal through the foam's cellular structure. The closed-cell foam traps air to create negative pressure that mechanically adheres the poster to the wall, enabling secure mounting that can be easily released by breaking the vacuum seal
2Ease of operation
If electrostatic force systems are used to mount objects without adhesives, then the mounting is removable and adhesive-free, but the system is quite expensive
Solution Approach 1:
The patent uses inexpensive foam material that can be manufactured at low cost through conventional processes. The foam strips are economical, single-use mounting solutions that provide the desired removable, adhesive-free functionality without the high costs associated with electrostatic systems
Solution Approach 2:
The patent changes the physical state and properties of the foam material to create an effective mounting solution. By controlling the foam's cellular structure, density, and elasticity parameters, the invention achieves reliable mounting at a fraction of the cost of electrostatic systems
3Ease of operation
If foam material is used to mount objects without adhesives, then the mounting is removable, but the foam lacks sufficient weight-bearing capability on smooth surfaces
Solution Approach 1:
The patent utilizes the porous cellular structure of foam material to create effective suction cups. The closed-cell foam structure traps air to create vacuum seals that generate sufficient holding force to support weights on smooth surfaces while maintaining the ability to be easily removed
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 material effectively adheres to smooth, impervious surfaces, supporting weights beyond its own, through a pressure differential mechanism, offering a cost-effective and removable solution for mounting objects.
Implementation Method 1
uses a pressure differential to adhere to surfaces, allowing secure attachment and weight-bearing capabilities without adhesives
Data Source
AI summary
A material for clinging to smooth, impervious surfaces and supporting other objects thereon. The material includes a body of foamed polyvinyl chloride, having a foam cellular structure of about 80% closed cell foam and up to about 20% open cell foam. A flexible skin is formed on one side, the skin being unfoamed polyvinyl chloride, and having surface imperfections comprising small cavities. An adhesive layer may be formed on the opposite side to secure the body to objects mounted by the material on a smooth surface. The material bears a load in addition to the weight of the material itself when the flexible skin adheres to a vertical surface, such as a mirror or stainless steel refrigerator door.