Asymmetric Heating Cooling Segments Thermoplastic Lamination
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Solution Overview
Problem
Existing laminating processes for thermoplastic film-like layers are limited by long process times, which hinder throughput and increase costs, as they require similar heating and cooling cycle steps, and premature removal of the composite can affect product quality.
Innovation Solution
A laminating station with more than two heating segments and fewer cooling segments, allowing for shorter cycle times and increased throughput by dividing the heating process into multiple segments and cooling the composite to a temperature above room temperature before further processing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the number of heating segments is increased to reduce individual cycle times, then productivity increases, but device complexity increases
Solution Approach 1:
The heating process is divided into multiple independent heating segments (at least three) that process different portions of the film arrangement simultaneously. Each heating segment operates independently with its own heating elements, allowing parallel processing of multiple layers without requiring a proportional increase in cooling segments, thus increasing throughput while managing system complexity.
2Device complexity
If the number of cooling segments is reduced to save costs, then device complexity decreases, but process time may increase
Solution Approach 1:
The cooling process is designed to cool the layer composite to a sufficient temperature above room temperature that allows further processing without requiring complete cooling to ambient temperature. This partial cooling action reduces the time required in cooling segments while still achieving the necessary processing conditions, allowing fewer cooling segments to suffice.
3Stability of the object's composition
If heating and cooling cycle steps are made equal in number, then process balance is maintained, but productivity is limited
Solution Approach 1:
The system uses an asymmetric configuration where the number of heating segments (at least three) exceeds the number of cooling segments (at least one). This asymmetric design allows the heating side to operate with shorter individual cycle times through parallel processing, while the cooling side can use fewer segments with extended individual cycle times, as the overall process is limited by the heating capacity rather than requiring equal balancing between heating and cooling.
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 reduces overall process time, increases productivity, and maintains product quality by allowing for earlier removal of the composite, while potentially eliminating the need for additional cooling segments, thus enhancing efficiency and reducing costs.
Implementation Method 1
a heating station (12) in which a process time for laminating the layers (28) to form a layer composite (30) is divided between more than two successive heating segments (13, 14, 15) of the heating station (12)
Implementation Method 2
the homogeneous layer composite (30) is cooled in the downstream cooling station (16), wherein a number of cooling segments in the cooling device is at least one number less than the number of heating segments
Data Source
Figure 1
AI summary
The invention relates to a method for laminating several film-like layers (28) of a thermoplastic material to form a homogeneous layer composite (30), in which several layers (28) provided as web-like material are aligned to each other to form a film arrangement (29), in which the film arrangement (29) is fed to a heating station (12), in which the process time in the heating station (12) for laminating the layers (28) to form a layer composite (30) is divided among more than two successive heating segments (13, 14, 15) in the heating station (12) in order to transfer the layers (28) as a laminated layer composite (30) to a cooling station (16) after passing through the heating segments (13, 14), and in which the layer composite (30) is cooled in the downstream cooling station (16), wherein the number of cooling segments (17) in the cooling station (16) is at least one fewer than the number of Heating segments (13, 14,15) in the upstream heating station (12), and in which, after the last cooling segment (17) of the cooling station (16), the layered composite (30) is fed to a further processing station or removal station (21). (See Figure 1),