HDPE Multi-Layer Insert for Tube Head Barrier
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Solution Overview
Problem
Existing tube container designs face challenges in manufacturing and positioning of inserts at the tube head, leading to potential leakage, contamination, and degradation of products due to improper placement or deformation of inserts.
Innovation Solution
A multi-layer insert made of high-density polyethylene (HDPE) with polymeric barrier layers, specifically designed to be easily positioned and centered due to color differentiation from the tube head, providing enhanced barrier properties and resistance to deformation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If an insert is placed in the tube head to form a protective barrier, then the barrier properties and protection of the tube head are improved, but the manufacturing complexity and positioning difficulty increase
Solution Approach 1:
The insert is made from a multi-layer material comprising an inner layer made of polyethylene, an outer layer made of polyethylene and at least two polymeric barrier layers, with at least 50% HDPE. This composite structure provides effective barrier properties against aggressive products while maintaining ease of manufacture through integration with the tube head.
Solution Approach 2:
The insert is integrally formed with the tube head as a single piece, eliminating the need for separate positioning and assembly steps. This merging of components resolves the positioning difficulty while maintaining the protective barrier function.
2Reliability
If an insert is used to hermetically close the tube head, then the product preservation is improved, but the cutting and perforation difficulty increase
Solution Approach 1:
The insert is made with at least 50% high-density polyethylene (HDPE), which changes the material parameters to provide both hermetic closure properties and improved cutability. The high HDPE content makes the insert easier to cut and perforate compared to conventional multi-layer materials, while maintaining effective barrier properties.
3Reliability
If the insert is made with conventional multi-layer material, then the barrier properties are improved, but the positioning precision and centering accuracy decrease
Solution Approach 1:
The insert is integrally formed with the tube head as a single piece, eliminating positioning and centering issues entirely. The unified structure ensures precise alignment and proper placement without requiring separate positioning steps.
Solution Approach 2:
The multi-layer composite material provides effective barrier properties while being integrally formed with the tube head, ensuring proper positioning and centering through the manufacturing process itself rather than requiring post-manufacturing adjustment.
4Stability of the object's composition
If the insert is made with materials resistant to deformation, then the structural stability is improved, but the cutting and perforation ease decrease
Solution Approach 1:
The insert is formulated with at least 50% high-density polyethylene (HDPE), which optimizes the balance between structural stability and cutability. This parameter change in material composition allows the insert to resist deformation during use while remaining easy to cut and perforate during manufacturing.
Data Source
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Figure 3
Figure 4~5
AI summary
The present invention relates to an insert (6) designed to be arranged in contact with a shoulder (2) of a tube head (1) of a tube container (40) so as to form a barrier between the tube head (1) and a product contained in the tube container (40), the insert (6) is formed from a multi-layer material (100) comprising an inner layer (101) made of polyethylene, an outer layer (103) made of polyethylene and at least two polymeric barrier layers (105), the multi-layer material (100) comprising at least 50% of high-density polyethylene (HDPE) and the insert (6) being of a different color of the tube head (1).