Cushion body and foam resin particles for filling cushion body

A foamed resin and buffer technology, applied in the field of buffers, can solve the problems of being woken up, unpleasant, noise, etc., and achieve the effect of increasing the allowable range and improving the touch.

Inactive Publication Date: 2005-01-12
SEKISUI PLASTICS CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] When the buffer body using traditional foamed resin particles is used for beds, mattresses, pillows, dolls, chair cushions, toys, etc. to show cushioning properties on the human body, the foamed resin particles are not easy to move, and noise occurs when a load is applied, resulting in Unpleasant sensations, such as problems with being woken up at bedtime that have hitherto been unresolved
In addition, there is a demand for further improvement of the touch feeling, but a cushion body that can fully meet this demand has not yet appeared.

Method used

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  • Cushion body and foam resin particles for filling cushion body
  • Cushion body and foam resin particles for filling cushion body

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0125] In the autoclave of 100L, add 120g tricalcium phosphate (product of Taiping Chemical Company, trade name is tricalcium phosphate), 0.24g sodium bisulfite and 0.24g potassium persulfate, then add 133g benzyl peroxide in this mixed solution Acyl (75% purity, product of NOF Corporation, trade name Niper BW), 28g tert-hexyl peroxyisopropyl monocarbonate (90% purity, product of NOF Corporation, trade name Perhexyl I), 40kg deionized water and 40kg of styrene monomer were dissolved and suspended by stirring to prepare a suspension.

[0126] Then, the styrene monomer was polymerized at 87° C. for 8 hours at a stirring speed of 200 rpm, and then polymerized at 125° C. for 2.5 hours. After the reaction is completed, the reaction mixture is cooled, taken out from the autoclave, centrifuged and dried to obtain styrene resin particles. The resulting styrene resin particles were sieved into particles of 0.25 to 0.355 mm.

[0127] In addition, 2000 g of water, 12 g of magnesium pyr...

Embodiment 2

[0131] Expanded resin particles were manufactured in the same manner as in Example 1, except that zinc stearate was added in an amount of 8.50 g (1.0 parts by weight). The average particle diameter, flow promoter content, local compressive load, apparent specific gravity, number of bubbles, and residual styrene monomer amount of the obtained foamed resin particles were measured, and a noise test and a touch test were performed. The foamed resin particles do not contain particles with a diameter larger than 2 mm. The results are listed in Table 1.

Embodiment 3

[0133] Expanded resin particles were manufactured in the same manner as in Example 1, except that zinc stearate was added in an amount of 15.3 g (1.8 parts by weight). The average particle diameter, flow promoter content, local compressive load, apparent specific gravity, number of bubbles, and residual styrene monomer amount of the obtained foamed resin particles were measured, and a noise test and a touch test were performed. The foamed resin particles do not contain particles with a diameter larger than 2 mm. The results are listed in Table 1.

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Abstract

A cushion body and foam resin particles for filling in the cushion body capable of solving such a problem that, when the cushion bodies such as a bed, a mattress, a pillow, and a cushion are used for performing a cushioning function, noise is generated each time the cushion bodies are moved to provide uncomfortable feeling to users or awake the users while asleep, wherein foam resin particles with a specified average particle size containing a specified amount of fluidization accelerator are used as the filler for the cushion body.

Description

technical field [0001] The present invention relates to a cushioning body, which is used as a cushioning article for beds, mattresses, pillows, dolls, chair cushions, toys, cushioning media, packaging materials, sound insulation materials, and heat insulation materials. Background technique [0002] Conventional cushioning bodies are known to use cotton as filling material. [0003] Japanese Laid-Open Utility Model Gazette 56 (1981)-115966 describes a cushion-like cushioning body, which includes a mixture of foamed resin particles with different particle diameters as a filling material, filled with non-stretchable leather (animal hide) in the bag made. It is described therein that the foamed resin particles used have a large particle diameter of about 1 to 5 mm. [0004] Japanese Utility Model Publication Hei 3(1991)-45641 describes a cushion-like cushioning body comprising foamed resin particles as a filling material, filled into a bag made of air-permeable cloth. It is ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A47C27/00A47C27/12A47C27/14
CPCA47C27/14Y10T428/2982Y10T428/13A47C27/12A47C27/086
Inventor 石田喜信上野忠笃迫田康宏
Owner SEKISUI PLASTICS CO LTD
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