3D Fiber Molded Part Surface Layout for Hidden Steam Extraction Elevations
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Solution Overview
Problem
Fiber-containing materials used in manufacturing molded parts often develop elevations due to steam extraction during the pressing process, which are aesthetically disruptive and hinder functional compatibility, particularly in applications like coffee capsules and drinking cups, leading to poor sealing and usability issues.
Innovation Solution
Integrate elevations into surface portions with distinct configurations, such as reduced material thickness or design elements, ensuring they are not visually or haptically protruding by being part of the surface design, using a molding tool with integrated steam extraction openings in transition regions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If steam extraction openings are provided in molding surfaces during pressing process, then steam can be discharged effectively, but elevations form on molded part surfaces that are visually and haptically disruptive
Solution Approach 1:
The patent applies local quality by creating elevations only in specific first surface portions that have different configuration from the surrounding second surface portions. This allows steam extraction openings to be positioned locally in regions where elevations will not compromise the overall surface flatness requirement, thereby maintaining manufacturing capability while preserving surface quality in critical areas.
Solution Approach 2:
The molded part surface is segmented into different surface portions - first surface portions where elevations are permitted and integrated, and second surface portions where surface flatness is maintained. This segmentation allows the steam extraction function to coexist with aesthetic and functional surface requirements by distributing elevations only in appropriate zones.
2Productivity
If elevations are present on molded part surfaces, then steam extraction is supported, but sealing effect and functional compatibility are compromised
Solution Approach 1:
The patent ensures that elevations are localized to first surface portions with different configuration, while second surface portions maintain the surface flatness required for sealing and functional compatibility. This local differentiation allows steam extraction to occur without compromising the sealing effect at contact surfaces.
Solution Approach 2:
By segmenting the surface into functional zones - first surface portions for steam extraction with integrated elevations, and second surface portions for sealing with maintained flatness - the patent enables both steam extraction efficiency and sealing reliability to be achieved simultaneously in different regions of the molded part.
3Shape
If elevations are integrated into surface portions with different configuration, then aesthetic appearance is improved, but manufacturing complexity increases
Solution Approach 1:
The patent incorporates steam extraction openings and corresponding elevation formation into the molding tool design from the beginning, rather than requiring post-processing. The openings are positioned in regions where elevations will be integrated into surface portions with different configuration, allowing aesthetic appearance to be achieved without adding complex post-manufacturing steps.
Solution Approach 2:
The patent merges the steam extraction function with the surface design by positioning openings in regions where elevations will be integrated into first surface portions. This combination allows the elevations to serve both as steam extraction features and as integrated design elements, avoiding the need for separate aesthetic modifications that would increase manufacturing complexity.
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
The solution minimizes the visibility and functional impact of elevations, enhancing the aesthetic appeal and usability of molded parts while maintaining their design integrity and sealing capabilities.
Implementation Method 1
steam that escapes from the fiber-containing material during pressing
Implementation Method 2
fiber-containing material that, during the production of the molded part, has been suctioned and/or pressed into a corresponding opening in a molding surface
Implementation Method 3
produced in a production process under pressure and thermal influence
Implementation Method 4
produced in a production process under pressure and thermal influence
Data Source
AI summary
A three-dimensional molded part made of fiber-containing material and a molding tool for producing molded parts made of fiber-containing material are described. The molded part is produced in a production process under pressure and thermal influence. A surface of the molded part has at least one elevation formed by fiber-containing material that, during the production of the molded part, has been suctioned into a corresponding opening in a molding surface of a molding tool when steam, which escapes from the fiber-containing material during pressing, is removed. The at least one elevation is arranged in a first surface portion that has a different configuration than an adjacent at least one second surface portion. The at least one elevation is integrated into the configuration of the first surface portion.