Sausage Casing Netting with Tear-Open Thread Loops
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Solution Overview
Problem
Existing encasing netting for sausages, being tied or knitted seamlessly as a tube, lacks a longitudinal seam for a tear-open thread, making it difficult to open without cutting the sausage surface, especially when used for fresh sausages where removal is undesirable.
Innovation Solution
A tear-open thread is integrated with a length greater than the netting in use, forming accessible loops and bound into knitting stitches of the honeycomb strands, allowing for easier tearing by severing only a part of the netting strand, and optionally secured with adhesive bonding to prevent slipping and facilitate removal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the encasing netting is produced as a seamless tube, then the structural integrity and continuous coverage are improved, but the ability to open the netting without cutting the sausage surface deteriorates
Solution Approach 1:
A tear-open thread is pre-integrated into the encasing netting during production, positioned to align with open netting honeycombs. This preliminary preparation allows the netting to be easily opened later by simply pulling the thread, without requiring cutting tools or damaging the sausage surface.
Solution Approach 2:
The tear-open thread acts as an intermediary element that facilitates the opening of the seamless netting. By pulling this thread, the netting can be opened through the pre-aligned open honeycombs without compromising the structural integrity of the netting itself or requiring external cutting instruments.
2Stability of the object's composition
If the tear-open thread is stitched to the encasing netting on the inside, then the netting structure is maintained, but the accessibility for grasping and tearing deteriorates
Solution Approach 1:
The tear-open thread is positioned to extend beyond the encasing netting in the longitudinal direction, creating accessibility in the external dimension. This allows the thread to be grasped from outside the netting while still being integrated into the internal structure, solving the contradiction between structural stability and operational accessibility.
3Stability of the object's composition
If the tear-open thread is placed inside the netting, then the netting structure is preserved, but the tearing action effectiveness deteriorates due to thick netting strands
Solution Approach 1:
The honeycomb strands of the netting are designed with non-uniform structure: they have a first part with multiple threads and a second part with fewer threads (preferably a single thread). The tear-open thread is positioned to act on this weaker second part, allowing effective tearing with reduced force while preserving the overall netting structure where multiple threads provide strength.
4Ease of manufacture
If the encasing netting is produced in the longitudinally extended state, then the production process is simplified, but the length mismatch between production state and use state creates complexity for thread integration
Solution Approach 1:
The tear-open thread is integrated into the encasing netting during production while the netting is in its longitudinally extended state. The thread length is predetermined to match the production state length, and its position is pre-aligned with the open netting honeycombs. This preliminary integration simplifies the production process while the natural contraction of the netting upon use automatically creates the desired loops for grasping.
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
Enables easier opening and removal of the encasing netting from sausages without damaging the surface, reducing the effort required to tear open the netting and ensuring secure detachment after use.
Implementation Method 1
the honeycomb strands of the netting, that is to say the strands which form the netting honeycomb, to be composed of knitting stitches and for the tear-open thread to be bound into these by knitting
Implementation Method 2
optionally secured with adhesive bonding to prevent slipping and facilitate removal
Data Source
AI summary
A tubular encasing netting for sausage and similar articles. The encasing netting contains a longitudinally running tear-open thread, the length of which is greater than that of the encasing netting in the state of use of the latter. This results in loops of the tear-open thread which are accessible from outside and which can be grasped for tearing open. The encasing netting is expediently a double-rib or warp-knit fabric. The tear-open thread is received in stitches of this fabric. The invention relates, furthermore, to a method for producing such an encasing netting, to a sausage casing connected to the encasing netting and to an article encased by this encasing netting.