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Core material for cushion, and cushion

A core material and cushion technology, applied in the field of cushions and medical care cushions, achieves the effect of being easy to handle, meeting the diverse needs of elastic properties, and being light in weight

Active Publication Date: 2016-03-02
C ENG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But this technology is not enough to release heat and steam through the sides of the mattress, and to draw in air

Method used

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  • Core material for cushion, and cushion
  • Core material for cushion, and cushion
  • Core material for cushion, and cushion

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0221] Example 1 is an example of layer 43, and the conditions used are as follows: the screw diameter of the extruder is 65 mm; the temperature of the die is 205 degrees Celsius; the die width is 890 mm and the thickness is 75 mm; the hole slope is 10 mm; The hole diameter is 1.6 mm; and the air gap (distance between the lower surface of the nozzle and the horizontal plane) is 67 mm. Hexane, hexene, and ethylene are used as main raw materials, and are polymerized by a known method using a metallocene compound as a catalyst. Melt viscosity (Pa) of the obtained ethylene / α-olefin copolymer: 1.05 at a shear rate of 24.3 per second, 1.12 at a shear rate of 60.8 per second, 1.15 at a shear rate of 121.6 per second, 1.18 at a shear rate of 243.2 per second, 1.23 at a shear rate of 608.0 per second, and 1.26 at a shear rate of 1216 per second; the MFR is 12 grams / 10 minutes, and the density is 0.9 grams per cubic centimeter, The filaments of ethylene / α-olefin copolymer were ejected ...

Embodiment 2

[0223] Example 2 is another example of layer 43, the conditions used are as follows: the screw diameter of the extruder is 40 mm; the die temperature is 190 degrees Celsius; the die has a width of 500 mm and a thickness of 25 mm; the hole slope is 10 mm ; the diameter of the nozzle hole is 1.6 mm; and the air gap (the distance between the lower surface of the nozzle and the horizontal plane) is 38 mm. Filaments of ethylene / α-olefin copolymer (produced from the same raw material as in Example 1) and polyethylene were ejected downward from the nozzle at a melt temperature of 160°C at an extrusion rate of 13 kg / h. The lower end of the chute is located 36mm below the nozzle and submerged in water. A pair of 55 cm wide stainless steel traction conveyor belts are parallel to each other across the 23 mm opening and positioned partially above the water. The filaments ejected from the molten state are solidified in the chute under the water heating chute at 36 degrees Celsius. The fi...

Embodiment 3

[0225] Example 3 is another example of layer 45, using the following conditions: extruder screw diameter 65 mm; die temperature 217 degrees Celsius; die width 900 mm and thickness 30 mm; orifice slope 10 mm ; the diameter of the nozzle hole is 1 mm; and the air gap (the distance between the lower surface of the nozzle and the horizontal plane) is 69 mm. Melt viscosity (Pa) of thermoplastic elastomer (registered trademark Hytrel): 1.26 at a shear rate of 60.8 per second, 1.28 at a shear rate of 121.6 per second, 1.15 at a shear rate of 121.6 per second, and 1.15 at a shear rate of 121.6 per second. It is 1.30 at a shear rate of 243.2 seconds, 1.30 at a shear rate of 608.0 per second, and 1.33 at a shear rate of 1216 per second; MFR is 12 grams / 10 minutes, and the density is 1.08 grams per cubic centimeter, thermoplastic Elastomer filaments were ejected downward from the nozzle at an extrusion rate of 27.5 kg / hr and a melt temperature of 195 degrees Celsius, the lower end of the...

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Abstract

The present invention provides a hygienic cushion which can be washed in water, exhibits excellent air permeability, and is light while exhibiting body-shape retention and exerting a resiliency force no less than a given standard at an appropriate thickness. A core material (1) for a cushion, wherein: one surface or both surfaces of a first layer in a three-dimensional mesh structure, said first layer being formed from a polyethylene-based thermoplastic resin, a polyester-based thermoplastic elastomer, or a mixture of a polyethylene-based thermoplastic resin and a polyethylene-based thermoplastic elastomer, is / are laminated with a second layer containing a thermoplastic resin that is different from that of the first layer; the three-dimensional mesh structure has an impact resilience of 13cm or greater and a hysteresis loss of 13-34%; and the thermal elongation rate of the three-dimensional mesh structure in the lengthwise direction before and after a hot-air drying test is 0-8% after 30 minutes at 90 DEG C in the case of a polyethylene-based thermoplastic resin, after 30 minutes at 130 DEG C in the case of a polyester-based thermoplastic elastomer, or after 30 minutes at 90 DEG C in the case of a mixture of a polyethylene-based thermoplastic resin and a polyethylene-based thermoplastic elastomer.

Description

technical field [0001] The present invention relates to a cushion core material utilizing a three-dimensional network structure, and a cushion and a medical nursing care cushion produced by covering the core material with various covers and cushions. Background technique [0002] A three-dimensional network structure is formed by bending the synthetic resin material fuse filaments extruded from a porous nozzle in a random ring shape, so as to be thermally fused and solidified with each other, and it is usually used as a cushion core material. [0003] Mattresses, for example, mattresses need to meet various needs, such as recycling efficiency and low cost, in addition to various conditions to prove a comfortable sleep, such as elasticity, sufficient repulsion, good support, shock absorption, quietness , air permeability and light. However it is difficult that the single three-dimensional network structure satisfies all these physical properties. It has been proposed to mak...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A47C27/12A61G7/05B32B5/26D04H1/4374D04H3/16
CPCA47C27/12D04H3/16D04H3/03B32B5/18B32B27/08B32B27/20B32B27/306B32B27/32B32B27/36B32B27/40B32B2262/02B32B2266/0278B32B2270/00B32B2274/00B32B2307/724A61G7/05715B32B5/26B32B5/028B32B5/06B32B5/145B32B5/245B32B27/12B32B27/304B32B3/02B32B3/08B32B3/26B32B2250/03B32B2250/04B32B2250/40B32B2262/0207B32B2262/0223B32B2262/0253B32B2262/0261B32B2262/0276B32B2266/06B32B2307/102B32B2307/558B32B2307/72B32B2307/7265B32B2307/732B32B2601/00A47C27/006A47C27/122A47C27/127A61G7/057
Inventor 高岡伸行
Owner C ENG CO LTD
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