Net-like structure having excellent low resilience characteristics
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Solution Overview
Problem
Existing net-like structures struggle to achieve a balance between low resilience characteristics, cushioning properties, and durability, particularly in applications such as furniture, vehicle seats, and portable cushions, where high resilience and durability are concurrently required.
Innovation Solution
A net-like structure with a three-dimensional random loop bonded structure made of a thermoplastic elastomer, comprising a continuous linear body with a fiber diameter of 0.1-3.0 mm, an apparent density of 0.005-0.30 g/cm³, and a styrene content of 10-40 mass%, featuring a polyolefin-based thermoplastic elastomer resin ratio of 1-30 mass% and a styrene-based thermoplastic elastomer with a styrene content greater than or equal to 40 wt%, which exhibits a 40°C compression residual strain of less than or equal to 35% and a hysteresis loss of 35-85%, enhancing durability and cushioning performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a polymer alloy of polyester-based thermoplastic elastomer and styrene-based thermoplastic elastomer is used to improve cushioning properties, then cushioning properties are improved, but manufacturing quality deteriorates due to poor compatibility
Solution Approach 1:
The patent specifies precise parameter ranges including styrene content (10-40 mass%), fiber diameter (0.1-3.0 mm), and apparent density (0.005-0.30 g/cm³) to ensure both cushioning performance and manufacturing feasibility
Data Source
Figure 1
AI summary
To provide a net-like structure having excellent low resilience characteristics, cushioning properties, and durability. The net-like structure has a three-dimensional random loop bonded structure constituted of a continuous linear body made of a thermoplastic elastomer having a fiber diameter of 0.1-3.0 mm and a styrene content of 10-40 mass%, the net-like structure having an apparent density of 0.005-0.30 g/cm3 and a 40°C compression residual strain of less than or equal to 35%.