Cold Stamping Surface Structure Transfer
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Solution Overview
Problem
Conventional cold stamping methods are unable to effectively transfer decorative materials onto objects with existing surface structures, such as paper, plastic films, coins, glasses, bottles, jars, or tubes, due to limitations in retaining surface features during the process.
Innovation Solution
A method involving a substrate with pre-existing surface structures, application of an adhesive layer, and pressing a transfer film with a decorative layer onto the substrate, where the adhesive is hardened, allowing the surface structures to be retained and transferred onto the decorative layer, using a flexible pressing body to ensure precise alignment and adhesion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional cold stamping methods are used on substrates with surface structures, then the decorative material can be applied, but the surface structures cannot be retained or transferred to the decorative layer
Solution Approach 1:
The patent employs a flexible pressing body made of elastomeric material that can conform to and replicate the surface structures of the substrate. The flexibility of the pressing body allows it to adapt to complex surface geometries while maintaining the ability to transfer the surface relief pattern to the decorative layer through pressure application.
Solution Approach 2:
The pressing body is designed to copy or replicate the surface structures of the substrate onto the decorative layer. By pressing the decorative material against the substrate through the structured pressing body, the surface relief pattern is transferred or imprinted onto the decorative layer, creating a copied version of the original surface structure.
2Strength
If a rigid pressing body is used to maintain pressure during adhesive hardening, then adhesion is improved, but the surface structures cannot be retained or transferred
Solution Approach 1:
The pressing body is constructed from elastomeric material that provides both flexibility for conforming to surface structures and sufficient rigidity to maintain pressing force during adhesive hardening. This elastic property allows the body to deform around surface features while still applying adequate pressure for strong adhesion.
Solution Approach 2:
The pressing body may incorporate composite construction combining elastomeric materials with structural support elements, allowing simultaneous achievement of flexibility for surface conforming and rigidity for maintaining pressing force throughout the adhesive curing process.
3Quantity of substance
If the adhesive layer is applied to cover surface structures, then complete coverage is achieved, but the surface structures are lost or altered
Solution Approach 1:
The adhesive layer is applied with varying local properties - in regions with surface structures, the adhesive thickness and composition may be adjusted to ensure proper wetting and coverage while preserving the underlying surface relief. The pressing body also applies pressure with local variations to maintain surface structures in specific areas.
Solution Approach 2:
The substrate surface structures are prepared and defined before adhesive application. By establishing the surface relief pattern first, subsequent adhesive application and decorative layer transfer can be performed in a way that respects and preserves the pre-established surface features rather than obscuring them.
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 enables the complete or partial transfer of surface structures from the substrate to the decorative layer, maintaining their form and integrity, allowing for decorative cold stamping on complex surfaces without altering the original structure.
Implementation Method 1
The adhesive then cures through the foil using UV radiation
Data Source
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AI summary
The invention relates to a method, in particular for decorative cold stamping, preferably for the production of a body (1), wherein the following steps are carried out in the method, preferably in the following sequence: a) providing a substrate (10), wherein one or more first areas (100) of a surface (10a) of the substrate (10) have one or more surface structures (11), b) applying at least one adhesive layer (20) to one or more second areas of the surface (10a) of the substrate (10),c) Pressing at least one transfer film (30) comprising at least one decorative layer (31) and at least one carrier layer (32) onto one or more third areas (300) of the surface (10a) of the substrate (10) and/or a surface of the at least one adhesive layer (20) facing away from the substrate (10) onto the one or more second areas of the surface (10a) of the substrate (10) and at least partial and/or partial hardening of the at least one adhesive layer (20) on the one or more second areas of the surface (10a) of the substrate (10), as well as a device and a body (1).