Interior Lining Skin Insert Sealing via Adhesive Film
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Solution Overview
Problem
Existing methods for manufacturing interior lining parts with embedded decorative or functional elements face challenges such as requiring different molds for each shape, fragility due to anchoring points, and inability to guarantee zero gaps or reliable sealing, especially when using certain molding technologies like 'slush' or rotational molding.
Innovation Solution
A method involving producing a skin, placing it in a foaming mold with a support layer, cutting out areas to create indentations, and inserting adhesive tape or film between the skin and foam layer, followed by placing decorative or functional inserts within these cutouts to ensure securement and controlled sealing during foaming.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If anchoring points are used to secure additional elements in the support body, then the integral securing of inserts is improved, but the support body becomes fragile
Solution Approach 1:
The invention extracts the anchoring function from the support body structure itself and relocates it to the skin layer. By creating recesses in the skin and using adhesive layers on the insert periphery, the securing function is separated from the support body, eliminating the fragility caused by anchoring points while maintaining reliable securing.
Solution Approach 2:
The invention introduces an adhesive layer as an intermediary between the insert and the skin structure. This adhesive mediator provides the securing function without requiring mechanical anchoring points in the support body, thus maintaining support body integrity while achieving reliable insert fixation.
2Manufacturing precision
If different mold shapes are used for each additional element shape, then the precision of insert fitting is improved, but the device complexity increases
Solution Approach 1:
The invention makes the skin shaping mold universal by enabling it to accommodate different insert shapes through a standardized process. The mold creates a generic recess structure that can receive various inserts, and the adhesive layer adapts to different insert geometries. This eliminates the need for dedicated molds for each insert shape while maintaining precise fitting.
Solution Approach 2:
The invention changes the approach from geometric adaptation (different mold shapes) to material adaptation (adhesive layer). By using a deformable adhesive material that conforms to different insert shapes, the system achieves precise fitting without changing the mold geometry, thus reducing device complexity.
3Manufacturing precision
If additional elements are embedded during skin production, then the continuity of visible surface is improved, but the manufacturing complexity increases
Solution Approach 1:
The invention performs preliminary actions by creating the recess in the skin and applying the adhesive layer before the final insert installation. This staged approach allows the skin to be produced with the recess already formed, ensuring surface continuity, while the insert is added subsequently without disrupting the skin production process.
4Adaptability or versatility
If cutout areas are created in the skin, then the flexibility of insert placement is improved, but the sealing reliability decreases
Solution Approach 1:
The adhesive layer serves as a sealing intermediary between the insert and the skin recess. It fills and seals the interface between the insert and the skin, preventing foam infiltration while maintaining the flexibility of insert placement. The adhesive thus simultaneously provides both sealing and bonding functions.
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 allows for reliable and lasting securement of inserts, prevents foam infiltration, and supports various shapes and sizes of inserts, reducing manufacturing complexity and costs while maintaining a seamless appearance.
Implementation Method 1
placing a piece of adhesive tape or film in the cutout area, the piece of adhesive tape or film being placed in between the skin and the intermediate foam layer
Implementation Method 2
foaming an intermediate layer
Data Source
AI summary
A method for manufacturing an interior lining part, includes producing a skin; placing the skin in a foaming mold with a support layer; foaming an intermediate layer; cutting out an area of the skin producing a cutout area of the skin; placing a piece of adhesive tape or film in the cutout area, the piece of adhesive tape or film being placed in between the skin and the intermediate foam layer; and placing an insert in the cut out area of the skin. A method for manufacturing an interior lining part, includes producing a skin by rotational molding; placing a piece of adhesive tape or film in the cutout area, the piece of adhesive tape or film being placed in between the skin and the intermediate foam layer; placing the skin in a foaming mold with a support layer; foaming an intermediate layer; cutting out an area of the skin producing a cutout area of the skin; and placing an insert in the cut out area of the skin.