Multi-Layer Dose Orientation for Uniform Barrier Distribution
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Solution Overview
Problem
Existing compression moulding apparatuses are inadequate for processing multi-layer doses, leading to non-uniform distribution of barrier materials, resulting in objects with incomplete or uneven barrier properties.
Innovation Solution
A co-extrusion device and transport system that modifies the orientation of multi-layer doses so the secondary layer extends transversely to the moulding direction, ensuring uniform distribution within the mould and preventing excessive deformations during compression moulding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the barrier layer is positioned on a vertical plane parallel to the moulding direction, then the extrusion process is simple, but the barrier material cannot flow uniformly between the male and female elements
Solution Approach 1:
The dose is pre-oriented during transport so that the barrier layer extends transversely to the moulding direction before entering the mould. This preliminary orientation ensures that when compression moulding occurs, the barrier material flows uniformly between the male and female elements, resolving the distribution uniformity problem while maintaining extrusion simplicity
2Reliability
If the barrier layer is positioned to flow uniformly, then the barrier properties are improved, but the material flow path becomes more complex
Solution Approach 1:
The transport device is configured to pre-orient the dose with the barrier layer extending transversely to the moulding direction. This preliminary action simplifies the overall process by ensuring optimal barrier layer positioning before moulding, improving barrier properties without requiring complex flow path modifications during compression
3Ease of manufacture
If the dose is compressed vertically between male and female elements, then the moulding process is straightforward, but the barrier material may be absent or too thin in certain zones
Solution Approach 1:
The dose is pre-oriented during transport so the barrier layer extends transversely to the moulding direction. This ensures that when straightforward vertical compression moulding occurs, the barrier material is uniformly distributed throughout the object walls, preventing absent or thin zones while maintaining moulding process simplicity
4Adaptability or versatility
If multi-layer doses are processed with conventional apparatus, then the existing equipment can be used, but the barrier material distributes non-uniformly and may form double layers
Solution Approach 1:
The transport device pre-orients the multi-layer dose with the barrier layer extending transversely to the moulding direction before the dose enters the conventional mould. This preliminary orientation allows existing equipment to process multi-layer doses while achieving uniform barrier material distribution and preventing double layer formation
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 ensures uniform distribution and integrity of the secondary layer within the object, maintaining its barrier properties across the entire object, particularly in walls perpendicular to the moulding direction, and optimizes material flow into lateral walls.
Implementation Method 1
a co-extrusion device for extruding a multi-layer structure having at least one primary layer and at least one secondary layer, so that the multi-layer structure leaves the co-extrusion device along an exit direction
Implementation Method 2
an arrangement for modifying orientation of the multi-layer dose while the multi-layer dose is being transported by the transport device, so that the multi-layer dose is introduced into the mould with an orientation in which the secondary layer extends transversely to the moulding direction
Implementation Method 3
a mould provided with a pair of elements, at least one of said elements being movable towards the other in a moulding direction, so as to compression mould an object from a multi-layer dose
Data Source
AI summary
An apparatus including a co-extrusion device for extruding a multi-layer structure having at least one primary layer and at least one secondary layer, so that the multi-layer structure leaves the co-extrusion device along an exit direction; a mould provided with a pair of elements, at least one of the elements being movable towards the other in a moulding direction, so as to compression mould an object from a multi-layer dose which was severed from the multi-layer structure; a transport device for carrying the dose towards the mould; an arrangement for modifying orientation of the dose while the dose is being transported by the transport device, so that the dose is introduced into the mould with an orientation in which the secondary layer extends transversely to the moulding direction.