Textile Round Sling Wear Resistance via Silicone and Polyurethane Coating
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Solution Overview
Problem
Textile round slings used for lifting heavy loads suffer from wear and tear due to friction, leading to reduced lifespan and safety risks, as existing manufacturing processes fail to provide adequate protection against abrasion and damage.
Innovation Solution
A process for manufacturing a textile round sling with an inner core of endless yarns and an outer casing treated with high-strength silicone yarns and a polyurethane mixture, followed by impregnation, padding, and controlled drying to create a stable three-dimensional network for enhanced anti-abrasive protection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional textile round slings are used for lifting heavy loads, then they provide basic lifting functionality, but they suffer from wear and tear due to friction which reduces lifespan and creates safety risks
Solution Approach 1:
The patent applies composite materials by combining textile outer casing with polyurethane coating and silicone yarns to create a multi-layer protective structure. The polyurethane provides abrasion resistance while silicone yarns protect against cuts, together extending the sling lifespan and improving reliability against wear and tear.
Solution Approach 2:
The patent applies local quality by strategically placing high-strength silicone yarns at specific locations within the outer casing where friction and wear occur most frequently. This localized reinforcement provides enhanced protection at critical areas without unnecessarily increasing the complexity of the entire sling structure.
2Reliability
If high-strength silicone yarns and polyurethane mixture are applied to the outer casing, then anti-abrasive protection is significantly improved, but the manufacturing process complexity increases
Solution Approach 1:
The patent applies preliminary action by incorporating high-strength silicone yarns into the outer casing during the initial manufacturing stage, before the sling is put into service. The polyurethane mixture is also applied during manufacturing to pre-establish the protective coating, eliminating the need for subsequent maintenance interventions and simplifying the overall product lifecycle.
Solution Approach 2:
The patent merges multiple protective functions into a single integrated outer casing structure. The silicone yarns and polyurethane coating are combined in one manufacturing process to provide both cut resistance and abrasion resistance simultaneously, rather than requiring separate protective layers or post-manufacturing modifications.
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 significantly increases wear resistance and extends the lifespan of the sling, reducing the risk of breakage and accidents by providing robust anti-abrasive protection against cuts, edges, and surfaces.
Implementation Method 1
a dispersion of a mixture of polyurethane and a catalyst with a base solution of aliphatic polyisocyanate is applied... Subsequently to the further step of padding is performed at a drying step, that allows to fix the three-dimensional network shaped previously
Implementation Method 2
Subsequently to the further step of padding is performed at a drying step, that allows to fix the three-dimensional network shaped previously in the pre-drying
Data Source
AI summary
Process for manufacturing a Textile round sling (1) being this one provided for lifting and handling loads, which comprises an inner core (2) that have a plurality of endless yarns which run longitudinally and parallel to each other and an outer casing (3) made of a textile material which covers the inner core (2) and with configuration able to exhibit a high wear resistance. During the step [10] of manufacturing the outer casing (3), some silicone yarns (4; 5) with/or a silicone base are applied in the warp. Subsequently a dispersion [step 20] of a mixture of polyurethane and a catalyst with a base solution of aliphatic polyisocyanate is applied.