Thermoplastic Sheet Projection for Adhesive Protection
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Solution Overview
Problem
The existing methods for sealing and sound insulation sheets in motor vehicles face issues due to the imperfections in protective sheets, such as silicone paper, which can weaken the adhesiveness of adhesive beads and cause geometric defects during transport and installation, requiring repeated removal and application processes, increasing costs and complexity.
Innovation Solution
A thermoplastic sheet with a projection having a height greater than the adhesive mass, thermoformed to support adjacent sheets during stacking and transport, eliminating the need for temporary protective sheets and maintaining adhesive integrity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If a protective sheet of silicone paper is placed on the adhesive bead to allow stacking and transport, then the sheets can be stacked and transported without difficulty, but the protective sheet surface becomes imperfect with folds and beads that weaken the adhesiveness of the adhesive bead
Solution Approach 1:
The invention extracts and eliminates the protective sheet from the system by providing a self-protective structure through the projection that prevents contact between stacked sheets and adhesive beads, thereby avoiding the harmful effects of protective sheets while maintaining stacking capability
Solution Approach 2:
The projection is formed beforehand during thermoforming to create a protective structure that cushions and prevents direct contact between stacked sheets and adhesive beads, preserving adhesive integrity before any potential harmful contact occurs
2Reliability
If a protective sheet is used during stacking and transport, then adhesive mass is protected from damage, but the protective sheet must be removed before installation, requiring repeated operations for each door
Solution Approach 1:
The protective sheet operation is completely extracted and eliminated from the process. The projection provides inherent protection during stacking and transport, and automatically disappears or becomes irrelevant during installation, eliminating the need for separate protective sheet application and removal operations
Solution Approach 2:
The sheet becomes self-protecting through the integrated projection structure that automatically prevents adhesive damage during stacking and transport without requiring external protective sheets or additional operational steps
3Manufacturing precision
If dimensional variations of the protective sheet are subjected to transport conditions, then geometric defects are created on the adhesive bead, but using no protective sheet exposes the adhesive bead to direct contact and damage
Solution Approach 1:
The projection is formed beforehand during thermoforming to create a protective barrier that cushions and prevents direct contact between stacked sheets and adhesive beads, preserving adhesive integrity before any potential harmful contact occurs during transport
Solution Approach 2:
The harmful protective sheet is extracted and replaced with an integrated projection structure that provides protection without introducing surface imperfections or geometric defects to the adhesive bead
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 solution allows for efficient stacking and transport of sheets without protective papers, preserving adhesive quality and reducing installation effort, thereby lowering costs and simplifying the process while ensuring effective bonding to vehicle bodywork elements.
Implementation Method 1
a sheet of thermoplastic material having a face supporting an adhesive mass intended to be applied against a metal sheet of a vehicle bodywork element, is characterized in that said face supporting the adhesive mass comprises at least one projection having a height substantially greater than the thickness of the adhesive mass, located at least partially close to the adhesive mass and thermoformed with the sheet
Data Source
Figure 1~6
AI summary
The sheet (1) has a face (10) that supports an adhesive material cord (4) and is applied against a metal sheet (2) of a body element e.g. inner door shell, of a motor vehicle. The face is oriented towards the interior of the body element. The face has a projection (5) with a height greater than the thickness of the cord. The difference between the height and the thickness ranges from specific millimeters to centimeters. The projection is placed at proximity of the cord and thermoformed with the sheet. The projection extends parallel to the cord. An independent claim is also included for a panel comprising a thermoplastic material sheet and a layer.