Dual-Layer Container Sealer for Heat-Resistant Sliding Seals
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Solution Overview
Problem
Existing container sealing structures in fabrication systems face challenges in maintaining effective sealing, sliding properties, and heat resistance, particularly during high-temperature drying processes, as single materials like urethane foam or rubber struggle to balance these requirements.
Innovation Solution
A two-layer sealer structure is implemented, with a first sealing layer made of polytetrafluoroethylene (PTFE) felt for sliding and a second layer of silicone foam for heat resistance, attached to the container's bottom and side walls to ensure effective sealing and prevent material leakage during the rising and falling of the fabrication stage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a single material like urethane foam or rubber is used for the sealer, then the sealing structure is simple, but it cannot maintain effective sealing, sliding properties, and heat resistance simultaneously during high-temperature drying processes
Solution Approach 1:
The patent applies composite materials by combining two different sealing layers: a first sealing layer made of heat-resistant material (such as PTFE or asbestos) and a second sealing layer made of elastic material (such as rubber or urethane foam). This composite structure allows the sealer to simultaneously achieve heat resistance from the first layer and elastic sealing properties from the second layer, resolving the contradiction between maintaining sealing effectiveness and withstanding high temperatures during drying processes.
Solution Approach 2:
The patent segments the sealer into two distinct functional layers: the first sealing layer contacts the side wall portion and provides heat resistance and sliding properties, while the second sealing layer contacts the bottom portion and provides elastic sealing. This segmentation allows each layer to specialize in specific functions, enabling the overall sealer to maintain both sealing effectiveness and thermal stability without requiring a complex single-material solution.
2Temperature
If a single material is used for the sealer, then the manufacturing process is simple, but the sealer cannot withstand high temperatures during drying while maintaining sliding properties
Solution Approach 1:
The patent uses composite materials with the first sealing layer made of heat-resistant material (PTFE, asbestos, or other heat-resistant materials) and the second sealing layer made of elastic material. This composite approach allows the sealer to withstand high temperatures during drying processes while maintaining sliding properties, without significantly complicating the manufacturing process since both layers can be formed through standard sealing component fabrication techniques.
3Ease of operation
If a single material like rubber is used for the sealer, then the sealer has good elastic sealing properties, but it loses sliding properties and sealing effectiveness at high temperatures
Solution Approach 1:
The patent combines heat-resistant material (first sealing layer) with elastic material (second sealing layer) to create a composite sealer. The heat-resistant material layer maintains sliding properties and structural integrity at high temperatures, while the elastic material layer provides continuous sealing pressure. This composite structure ensures both sliding ease and sealing durability are maintained throughout the drying process.
Solution Approach 2:
The patent applies local quality by assigning different material properties to different parts of the sealer: the first sealing layer (contacting the side wall) is made of heat-resistant material optimized for high-temperature sliding, while the second sealing layer (contacting the bottom portion) is made of elastic material optimized for sealing pressure. This localized material assignment allows each region to perform its specific function effectively under high-temperature conditions.
Data Source
AI summary
A container includes a bottom portion movable in a first direction; a side wall portion surrounding a circumference of the bottom portion, a sealer attached to the circumference of the bottom portion to seal a gap between the circumference of the bottom portion and the side wall portion in a second direction intersecting the first direction. The sealer includes a first sealing layer in contact with the side wall portion and formed by a first material and a second sealing layer attached to the bottom portion and formed by a second material different from the first material of the first sealing layer.