Plastic Foam Door Profile Elements for Simplified Assembly
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Solution Overview
Problem
The manufacturing of front doors is complex due to the need for processing profile elements to accommodate fittings, which involves noisy and dusty machining, and requires time-consuming post-processing, limiting customization and thermal insulation efficiency.
Innovation Solution
Producing profile elements as molded parts from plastic foam with formed corners and cuttable areas, allowing for simplified assembly and improved thermal insulation, mechanical strength, and integration of reinforcement elements and multi-pane insulating glass for enhanced stability and reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If profile elements are produced as molded parts from plastic foam, then thermal insulation is improved and manufacturing time is reduced, but mechanical strength may be insufficient
Solution Approach 1:
The patent uses plastic foam as a composite material that combines thermal insulation properties with sufficient mechanical strength for door profile elements. The foam structure provides both the desired insulation performance and the necessary structural integrity when properly formulated and molded.
Solution Approach 2:
The patent optimizes the density and composition parameters of the plastic foam material to achieve the right balance between mechanical strength and thermal insulation. By controlling foam density and material properties during molding, the profile elements gain adequate strength while maintaining insulation benefits.
2Manufacturing precision
If complex corner formation processes are used, then joining accuracy is improved, but device complexity and manufacturing time increase
Solution Approach 1:
The patent incorporates corner formations directly into the molding process of the profile elements. The corners are pre-formed during injection molding of the plastic foam, eliminating the need for separate corner formation operations and subsequent assembly steps, thereby simplifying the overall manufacturing process while maintaining precision.
Solution Approach 2:
The patent combines the corner formation operation with the main profile element molding process. By integrating corner creation into the single-step injection molding operation, the patent eliminates multiple separate processes (molding, corner formation, assembly) and reduces manufacturing complexity while preserving joining accuracy.
3Adaptability or versatility
If standard profile elements are used with cuttable areas, then adaptability to customer requests is improved, but manufacturing precision may be reduced
Solution Approach 1:
The patent designs profile elements with predetermined cuttable areas that are clearly defined during molding. These segmentation points allow the profile elements to be divided into standard sections that can be easily customized to different customer requirements while maintaining overall dimensional control through the molding process.
Solution Approach 2:
The patent creates universal profile element designs that can serve multiple purposes and be adapted to various customer requests through simple cutting at predefined points. The standardized design with marked cut zones enables the same basic profile element to be customized for different door sizes and configurations without requiring completely different tooling.
Data Source
Figure 1~5
AI summary
The invention relates to a door, in particular a front door (1), with a frame-like core element (2) made of interconnected profile elements (4), wherein the profile elements (4) are manufactured as a molded part from a plastic foam.