Strip-Shaped Plastic Object With Oval Embossing For Clamping
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Solution Overview
Problem
Existing strip-shaped plastic objects face issues with force transference during clamping and welding due to smooth surfaces, leading to slipping and reduced mechanical strength, and previous embossing methods damage the material or create weak points.
Innovation Solution
A strip-shaped plastic object with embossing impressions distributed over the width and length, featuring a closed oval or circular boundary line for improved force transference, optimized for clamping and welding processes, and designed to maintain the material's mechanical integrity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the plastic strip surface is kept smooth, then the manufacturing process is simple and the surface is aesthetically pleasing, but the clamping and welding tools cannot apply sufficient force without slipping
Solution Approach 1:
The patent applies local quality by creating embossing impressions only in specific regions of the plastic strip surface where clamping and welding forces are applied, rather than making the entire surface rough. This allows the strip to maintain smooth surfaces for manufacturing and aesthetics while having localized textured areas that provide sufficient friction for force transference during clamping and welding operations.
2Force
If cross grooves are embossed across the entire strip width and thickness, then the surface roughness is increased for better force transference, but the microcrystalline structure is damaged and tensile strength is reduced
Solution Approach 1:
The embossing impressions are applied locally to specific areas of the strip surface rather than across the entire width and thickness. This localized embossing provides sufficient surface roughness for force transference in the clamping and welding regions while preserving the intact microcrystalline structure and tensile strength in the bulk material.
Solution Approach 2:
Instead of applying embossing across the entire strip (excessive action), the patent applies embossing only to the extent necessary for achieving adequate force transference during clamping and welding. This partial action approach provides sufficient surface roughness where needed while minimizing damage to the overall material structure and maintaining tensile strength.
3Adaptability or versatility
If deep embossing is applied to increase flexibility, then the strip becomes more flexible, but the notched effect creates weak points that lead to tearing or splintering under stress
Solution Approach 1:
The embossing impressions are designed with controlled depth and distribution, creating localized surface variations that provide flexibility where needed while avoiding deep notches that would create stress concentration points. The embossing is applied in a pattern that maintains structural integrity and prevents tearing under stress.
Solution Approach 2:
The embossing depth and intensity are optimized to provide sufficient flexibility for the application while avoiding excessive embossing that would create weak points. The partial embossing approach maintains an appropriate balance between flexibility and structural strength, preventing tearing and splintering.
4Adaptability or versatility
If the embossing pattern has reduced contact area with the clamping roller, then the flexibility is improved, but the force transference capability is reduced and force peaks occur encouraging tearing
Solution Approach 1:
The embossing pattern is designed with optimized contact characteristics that provide sufficient surface area for force transference from clamping rollers while maintaining flexibility. The distribution and geometry of embossing impressions are tailored to ensure uniform force distribution across the contact area, preventing force peaks that would encourage tearing.
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
Ensures uniform force application during clamping and efficient welding by preventing slipping and structural weakening, while maintaining high mechanical strength and reducing the risk of tearing or splintering.
Implementation Method 1
a smooth surface can cause slipping between the clamping and/or welding tool respectively and the strip, with the result that the necessary clamping force may not be achieved
Implementation Method 2
the surfaces of the two ends of the strip to be connected are brought to melting point by means of a heated metal wedge and then pressed onto one another until they are joined together
Implementation Method 3
the strips to be joined are pressed onto one another and moved against one another, causing the strip surfaces to heat up until the material softens and they are fused together due to the applied pressure
Data Source
AI summary
The invention relates to a strip-shaped plastic object (1), having a longitudinal extent (2) and, perpendicular thereto, a strip width (3) and a strip thickness (4), wherein the strip-shaped plastic object (1) comprises an at least partially crystalline, thermoplastic plastic material, which is stretched monoaxially, or predominantly monoaxially, in the direction of the longitudinal extent (2). The strip width (3) and the longitudinal extent (2) form an upper (5) and a lower surface (6), which surfaces (5, 6) are spaced apart from each other by the strip thickness (4), wherein at least one of the surfaces (5, 6) has an embossment (7). The embossment (7) is formed by embossing impressions (8) distributed over the strip width (3) and over the longitudinal extent (2), wherein the embossing impression (8) has a length (9), a width (10), and a depth (11) extending in the direction of the strip thickness (4). In a top view of the embossing impression (8), the boundary line (12) thereof is formed by a closed oval curve.