Dual-Side Adhesive Coating for Continuous Foil Production
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Solution Overview
Problem
The existing methods for producing connection foils for sealing building structures, which rely on self-adhesive tapes, face interruptions in the production process due to the need to replace adhesive rolls after a certain length, leading to increased costs and inefficiencies.
Innovation Solution
A method involving the continuous application of a flowable adhesive material to both surfaces of a foil-like carrier during transport, using multiple application devices and rollers to ensure uniform coating without interruptions, allowing for the production of foils with self-adhesive strips on both sides without folding or creasing, and enabling the coating of entire rolls without interruptions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If self-adhesive tapes are used on carrier foils, then adhesive application is achieved, but production process interruptions occur after 25-75 meters requiring roll replacement
Solution Approach 1:
The patent implements continuous adhesive application by replacing discrete self-adhesive tapes with a continuous adhesive supply system. The adhesive is fed continuously from a large reservoir through a application device that moves synchronously with the foil, eliminating the need to stop production for roll changes. This ensures the useful action of adhesive application continues uninterrupted throughout the entire production run.
Solution Approach 2:
The patent introduces an intermediary adhesive application device that acts as a mediator between the adhesive supply and the carrier foil. This device includes a movable application unit with adhesive reservoir and application elements that can be positioned and moved along the foil width, enabling continuous adhesive application without direct contact between the foil and the adhesive supply rolls, thus avoiding production interruptions.
2Quantity of substance
If self-adhesive rolls are replaced frequently, then adhesive application coverage is maintained, but production costs increase
Solution Approach 1:
The patent combines multiple adhesive application functions into a single integrated device. The application device incorporates both adhesive supply reservoirs and application elements in one unit that can service the entire foil width, eliminating the need for multiple separate adhesive rolls and their associated replacement costs. This merging reduces both material waste and operational expenses.
Solution Approach 2:
The adhesive application device is designed with multi-functionality, capable of applying adhesive across the entire width of the carrier foil through a single device. The application unit can be positioned and moved along the foil width, providing universal coverage without requiring multiple specialized adhesive rolls for different sections, thereby reducing overall adhesive consumption and application costs.
3Reliability
If adhesive is applied to both surfaces of the foil, then sealing capability is improved, but application complexity increases
Solution Approach 1:
The patent segments the adhesive application process into distinct zones along the foil width, with application devices positioned to treat different sections. The carrier foil is divided into multiple application zones that can be serviced by separate application units or by a single unit moving between positions. This segmentation enables systematic dual-sided adhesive application while maintaining manageable device complexity through modular design.
Solution Approach 2:
The patent adds the dimension of time to the adhesive application process by implementing sequential application. Instead of simultaneously applying adhesive to both sides across the entire width (which would require complex multi-sided devices), the system applies adhesive to different sections or sides in sequence as the foil moves through the production line. This temporal sequencing simplifies the spatial complexity of the application devices while achieving complete dual-sided coverage.
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 approach enables continuous production of foils with self-adhesive strips on both sides, reducing costs and improving efficiency by eliminating the need for frequent roll changes and interruptions, while ensuring even and extensive adhesive coverage.
Implementation Method 1
The application is preferably a coating
Implementation Method 2
the adhesive material is heated before it is applied to the film or the carrier
Implementation Method 3
The flowable adhesive material is preferably a hot-melt adhesive
Data Source
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AI summary
Method for producing a film (1) and in particular a connection film for sealing building structures, wherein a film-like carrier (22) is transported by means of a transport device along a predetermined transport path, and wherein this film-like carrier (22) extends in the transport direction (T) and a width direction (B) perpendicular to this transport direction, and wherein this film-like carrier has a first surface (12) and a second surface (14) opposite the first surface (12), characterized in that a flowable adhesive material is applied to the first surface (12) during transport by means of a first application device (2), wherein this flowable adhesive material is applied as an adhesive strip to the film-like carrier (22).which extends in the transport direction (T) and in the width direction (B) and wherein a flowable adhesive material is applied to the second surface (14) by means of a second application device (4), wherein this flowable adhesive material is applied as an adhesive strip to the film-like carrier (22) which extends in the transport direction (T) and in the width direction.