Scratch-proof TPU cutting board having increased wear resistance and no toxicity and method of manufacturing same
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Solution Overview
Problem
Conventional scratch-proof cutting boards face issues with reduced wear resistance due to incomplete binding of polytetrafluoroethylene with polyethylene, leading to surface scratches and discoloration, and are expensive due to the high cost of polytetrafluoroethylene.
Innovation Solution
A scratch-proof TPU cutting board is developed using a composition of 72 wt % TPU, 25 wt % magnesium sulfate, and 3 wt % dispersant, with enhanced molecular cohesion through mixing, drying, and injection molding, which increases wear and friction resistance while being non-toxic.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If polytetrafluoroethylene (TPFE) is used as additive in conventional cutting boards, then scratch resistance is improved, but wear resistance decreases due to incomplete binding with polyethylene
Solution Approach 1:
The patent removes polytetrafluoroethylene (TPFE) from the composition and replaces it with magnesium sulfate. This extraction of the problematic additive eliminates the binding issue while maintaining scratch resistance through the dispersant-mediated distribution of magnesium sulfate particles on the cutting surface.
Solution Approach 2:
The patent changes the material composition parameters by substituting TPFE with magnesium sulfate and adjusting the ratio of TPU to other components. This parameter change resolves the binding incompatibility issue while achieving both scratch and wear resistance through proper material selection and formulation.
2Object-affected harmful factors
If polytetrafluoroethylene (TPFE) is used to create scratch-proof cutting boards, then scratch resistance is improved, but manufacturing cost increases due to high price of TPFE
Solution Approach 1:
The patent extracts polytetrafluoroethylene (TPFE) from the formulation and replaces it with magnesium sulfate, which is significantly less expensive. This substitution maintains the scratch-proof functionality while dramatically reducing material costs, making the cutting board more economically viable for mass production.
Solution Approach 2:
The patent employs inexpensive materials (magnesium sulfate and TPU) instead of expensive TPFE to achieve the same functional outcome. This approach creates a cost-effective cutting board that can be manufactured at lower prices while maintaining durability and scratch resistance.
3Reliability
If conventional plastic cutting boards are used, then water absorption is prevented, but surface scratches form allowing germ propagation and discoloration
Solution Approach 1:
The patent creates a composite material system combining TPU (thermoplastic polyurethane) with magnesium sulfate and dispersant. This composite structure provides both water resistance from the TPU matrix and enhanced surface integrity through the distributed magnesium sulfate particles, which prevent scratch formation while maintaining non-absorbent properties.
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 TPU cutting board exhibits significantly improved wear and friction resistance, preventing surface scratches and discoloration, and is cost-effective without toxicity, ensuring a durable and safe kitchen utensil.
Implementation Method 1
molecular cohesion of TPU and magnesium sulfate may be enhanced, and thus the TPU cutting board that is finally produced has greatly increased wear resistance and friction resistance
Implementation Method 2
about 3 wt % of a dispersant... performing mixing with stirring for about 40 min
Implementation Method 3
placing the mixed materials in a dryer and performing drying at 80° C. for about 3 hr
Data Source
AI summary
Disclosed are a scratch-proof TPU (thermoplastic polyurethane) cutting board having increased wear resistance and no toxicity and a method of manufacturing the same, the method according to a preferred embodiment including (1) weighing 72 wt % of TPU, 25 wt % of magnesium sulfate, and 3 wt % of a dispersant, (2) placing the materials weighed in step (1) in a mixing tank and performing mixing with stirring for 40 min, (3) placing the mixed materials in a dryer and performing drying at 80° C. for 3 hr, and (4) placing the dried materials in an injection-molding machine and performing injection molding, whereby the molecular cohesion of TPU and magnesium sulfate is enhanced, whereby the final TPU cutting board has greatly increased wear resistance and friction resistance and is non-toxic, and surface scratches do not occur due to a cutting process when using the cutting board, thereby preventing discoloration of the surface of the cutting board.