Fiber Molded Breakable Weak Point With Cut-and-Press Sealing
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Solution Overview
Problem
Existing methods for creating breakable weak points in fiber-containing molded bodies either fail to provide a secure sealing effect or are difficult to open, and they are not reproducible, leading to inconsistent performance across multiple molded parts.
Innovation Solution
A method involving complete cutting of a surface region followed by pressing the cut surfaces together to create a force-fitting connection, forming a breakable weak point that maintains sealing properties while being easily opened.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If perforation is used to create weak points, then the weak point can be easily opened, but a complete barrier or seal is not achieved in the region of the punched regions
Solution Approach 1:
The fiber layer is segmented by completely cutting through it at the weak point location, creating separated regions that can be pressed together. This segmentation allows the weak point to be easily opened while maintaining sealing in the remaining connected regions.
Solution Approach 2:
The fiber layer is completely cut only at the specific weak point location while remaining intact in other regions. This local differentiation creates a weak point with easy opening capability while preserving sealing properties in the surrounding areas.
2Ease of operation
If layer thickness is reduced in the region of a weak point, then the weak point can be penetrated, but the weak point tears due to the fiber-containing material and the region around the weak point is severely damaged
Solution Approach 1:
The fiber layer is completely cut through at the weak point location before pressing, creating pre-separated regions. This preliminary cutting action allows controlled penetration at the weak point while preventing uncontrolled tearing in the remaining connected regions.
Solution Approach 2:
By segmenting the fiber layer through complete cutting at the weak point, the structure allows targeted penetration without compromising the integrity of the surrounding regions, as the fibers are separated rather than merely thinned.
3Adaptability or versatility
If fiber orientation and fiber type vary in molded parts, then production flexibility is improved, but the effects on weak points and tearing are not constant across multiple molded bodies
Solution Approach 1:
The complete cutting of the fiber layer at the weak point location is performed as a preliminary action before pressing. This ensures that regardless of fiber orientation or type, the cutting process creates consistent separation that leads to reproducible weak point performance across multiple molded bodies.
Solution Approach 2:
The mechanical cutting process replaces the reliance on fiber orientation and type for creating weak points. By using a cutting mechanism that separates fibers regardless of their arrangement, consistent weak point performance is achieved across varying production conditions.
4Reliability
If complete cutting followed by pressing is used to create weak points, then sealing integrity is maintained and opening is easy, but the process requires precise control of cutting and pressing parameters
Solution Approach 1:
The cutting and pressing operations are merged into a sequential process where complete cutting is performed first, followed immediately by pressing of the separated regions. This combination achieves sealing integrity and easy opening while managing process control through a coordinated sequence of operations.
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 ensures consistent, easy opening of molded bodies with reproducible weak points that maintain sealing integrity without damaging the surface, using a tool with a cutting and pressing mechanism.
Implementation Method 1
cutting at least one region of the at least one surface portion with a cutting element
Implementation Method 2
pressing the at least one previously completely cut region of the at least one surface portion, wherein the fiber-containing material in the at least one cut region is pressed against each other, and thereby a connection is created in the at least one region that is weaker than the connection of the fiber-containing material in the remaining region
Data Source
AI summary
A method for producing a breakable weak point in molded bodies made of fiber-containing material is described. Further, a tool for producing a breakable weak point in molded bodies made of fiber-containing material is described. A molded body made of fiber-containing material is also described. The molded body has at least one surface portion that has at least one region with a breakable weak point.