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Net-like structure

A structure and mesh technology, used in mattresses, other seating furniture, applications, etc., can solve the problems of poor durability, low hardness, and high content of hard components, and achieve the effect of excellent durability and low resilience.

Active Publication Date: 2019-03-15
TOYO TOYOBO CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] Although the network structure disclosed in Japanese Unexamined Patent Publication No. 2013-076201 (Patent Document 1) has low resilience, it has the problem of low hardness and bottoming feeling. Problems of large compressive residual stress and poor durability

Method used

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Examples

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Embodiment

[0060] Hereinafter, although an Example is shown and this invention is demonstrated concretely, this invention is not limited to these. The measurement and evaluation of the characteristic value in an Example were performed as follows. In addition, the size of a sample is based on the size described below, but when the sample is insufficient, it measures using the sample size of a possible size.

[0061] (1) Existence and content of polystyrene-based thermoplastic elastomer

[0062] The presence of the polystyrene-based thermoplastic elastomer was confirmed by infrared absorption spectroscopy, and the content was measured by GPC. As the measurement device, a gel permeation chromatograph "L-7000 series" manufactured by Hitachi, Ltd. was used, TSKgel G4000HXL×2 columns (manufactured by Tosoh Corporation) were used as a column, and tetrahydrofuran was used as a solvent. Measurement was performed under the conditions of flow rate: 1 ml / min, concentration: 20 mg / 10 ml (sample / tet...

Synthetic example 1

[0091] In a 5-liter autoclave, 1,800 g of cyclohexane, 30 g of styrene monomer, and 0.32 g of n-butyllithium were added, and polymerized at 60°C for 1 hour, and then, 162 g of isoprene monomer was added, and polymerized at 60°C for 1 hour . Finally, 30 g of a styrene monomer was added, and it polymerized at 60 degreeC for 1 hour. The same amount of methanol was added to this active polymer solution to deactivate it, and then it was precipitated in a large amount of methanol to recover the polystyrene-based thermoplastic elastomer (S-1) containing isoprene. The obtained isoprene-containing polystyrene-based thermoplastic elastomer (S-1) had a styrene content of 30% by mass and a weight average molecular weight of 170,000. Here, "polystyrene-based thermoplastic elastomer (S-1) containing isoprene" means a 1st triblock copolymer.

Synthetic example 2

[0093] In a 5-liter autoclave, add 1,800 g of cyclohexane, 67.5 g of styrene monomer and 0.5 g of n-butyllithium, and polymerize at 60° C. for 1 hour, then add 315 g of 1,3-butadiene monomer, and °C for 1 hour. Finally, 67.5 g of styrene monomer was added, and it polymerized at 60 degreeC for 1 hour. The same amount of methanol was added to this active polymer solution to deactivate it, and then it was precipitated in a large amount of methanol to recover the polystyrene-based thermoplastic elastomer (S-2) containing butadiene. The obtained butadiene-containing polystyrene-based thermoplastic elastomer (S-2) had a styrene content of 30% by mass and a weight average molecular weight of 270,000. Here, the "polystyrene-based thermoplastic elastomer (S-2) containing butadiene" means the second triblock copolymer.

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Abstract

Provided is a net-like structure having a three-dimensional random loop bonded structure configured of a continuous linear body, wherein the continuous linear body is a fiber formed of a resin which contains 45 mass% or more of a polystyrene-based thermoplastic elastomer as a main component; and the polystyrene-based thermoplastic elastomer is a mixture of a first triblock copolymer, said first triblock copolymer consisting of a styrene polymer block-an isoprene polymer block-a styrene polymer block, with a second triblock copolymer, said second triblock copolymer consisting of a styrene polymer block-a butadiene polymer block-a styrene polymer block and / or a styrene polymer block-a butadiene / isoprene copolymer block-a styrene polymer block.

Description

technical field [0001] The present invention relates to elastic cushion materials, sleeping bags, mats, etc., which can be suitably used in bedding such as office chairs, furniture, sofas, beds, etc. A network structure with low resilience, excellent durability, and no bottoming feeling, such as cushions for impact absorption such as floor mats, floor mats, anti-collision, sandwiched members, etc. Background technique [0002] Currently, mesh structures are increasingly used as elastic pad materials for furniture, bedding such as beds, and vehicle seats such as trains, automobiles, and motorcycles. [0003] For example, Japanese Patent Application Laid-Open No. 2013-076201 (Patent Document 1) discloses a network structure in which a continuous linear body of 100 to 100,000 decitex is bent to form random rings, and each ring is melted. A network structure composed of a three-dimensional random ring junction structure that is in contact with each other and most of the contact...

Claims

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Application Information

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IPC IPC(8): D04H3/007A47C27/12C08L53/02D04H3/016D04H3/03
CPCA47C27/12D04H3/007D04H3/016D04H3/03C08L53/02D04H3/16C08L53/025
Inventor 河原茂宫本岳洋安井章文小渊信一谷中辉之井上拓勇
Owner TOYO TOYOBO CO LTD
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