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Pillow

a technology of pillow and sleeve, which is applied in the field of pillow, can solve the problems of deterioration of comfort during sleep and instability at the head region, and achieve the effects of reducing heat conduction efficiency, preventing latent heat storage medium, and imposing no strain on the body

Inactive Publication Date: 2005-10-13
SUMITOMO RUBBER IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present invention provides a pillow that can hold and cool the head region with a shape fitting the shape of the nape and head, while also being comfortable during sleep. The pillow has a restoring property, meaning it can flex and adapt to the body's movement during sleep. The pillow includes a cold insulator made of a gel material that has a concave portion in the side wall of the pillow, allowing for stability and comfort at the head region while maintaining cooling function. The gel material has appropriate hardness and resilient properties, and the pillow has good stability and comfort during sleep while keeping the head region cool.

Problems solved by technology

To the contrary, when the shape conservation ability is too great, stability at the head region and comfort during sleep may be deteriorated due to inferior shape following capability.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0077] A rubber composition containing a natural rubber as a base (100 parts by weight of a natural rubber, 115 parts by weight of a filler, 4 parts by weight of a softening agent, 5.5 parts by weight of zinc white, 1.1 parts by weight of stearic acid, 5 parts by weight a foaming agent, 2 parts by weight of sulfur, 0.9 part by weight of a vulcanization accelerator, 0.6 part by weight of an antiaging agent) was placed into a mold, and allowed to be vulcanized and expanded at 150° C. for 10 minutes to perfect forming. Accordingly, a main body having a concave portion was manufactured. On the other hand, a polyurethane film (thickness: 0.1 mm, tensile strength: 20 N, tear strength: 8 N, elongation at break: 220%) was laid on a mold having a shape corresponding to the shape of the concave portion of the main body, and then, a polyurethane prepolymer prepared by compounding and dispersing 10% by weight of microcapsules containing a latent heat storage medium (powder form) was cast into t...

examples 2 to 13

[0079] A cold insulator was produced similarly to Example 1 except that the melting point of n-paraffin as a latent heat storage medium, -or the amount of the microcapsule containing the latent heat storage medium was altered. This cold insulator was combined with the main body to obtain pillows of Examples 2 to 13. The cold insulator in Examples 5 and 6 is in a sheet form, which cold insulator obtained by filling microcapsules containing the above-mentioned polyurethane prepolymer and latent heat storage medium in a pouched sheet, without filling the polyurethane composition to be cured.

[Evaluation Test of Pillow]

[0080] (1) Determination of Temperature Change

[0081] The cold insulators of the above-mentioned Examples and Comparative Example were left to stand in a refrigerator (temperature inside: 5° C.) for 8 hours or longer, and thus, the internal temperature of the gel material was regulated to be 5° C. Next, an adult male whose body temperature was approximately 36° C. lay th...

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Abstract

Pillow 1 according to the present invention includes a main body 3 having a concave portion 7 in the central part, and a cold insulator 5 mounted in the concave portion 7. This concave portion 7 is open in the central part of the main body side wall 8 on the side where the human nape is to be situated. The cold insulator 5 has a film for inclusion 11, and a gel material 9 which is internally included in the film for inclusion 11 and which includes a crosslinked polymer that is not in a swelled state with a medium. It is preferred that the gel material 9 includes an unfoamed polyurethane resin, and has an Asker F hardness of 10 or greater and 50 or less. Also, depth of the opening of the concave portion 7 that is open at the main body side wall 8 is preferably equal to or greater than one third of the height of this main body side wall 8. This pillow 1 is constituted so that the head region can be held with a shape fitting the shape of the neck and head, therefore, any strain is not imposed to the body.

Description

[0001] This application claims priority on Patent Application No. 2003-312629 filed in JAPAN on Sep. 4, 2003, Patent Application No. 2004-204543 filed in JAPAN on Jul. 12, 2004 and Patent Application No. 2004-257170 filed in JAPAN on Sep. 3, 2004. BACKGROUND OF THE INVENTION [0002] 1. Field of the Invention [0003] The present invention relates to pillows. In particular, the present invention relates to pillows for use in cooling human neck and head region. [0004] 2. Description of the Related Art [0005] Conventionally, water pillows have been used for cooling a head region. The water pillow is troublesome in replacement of ice and water. For the replacement, place, vessel and the like for dealing with water are required. A variety of means have been proposed in order to eliminate the burden. For example, JP-A No. 2002-330986 describes an invention concerning a pillow including capsules without need of water. In this pillow, cooled capsules are packed in stead of ice. [0006] Also, JP...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): A47G9/00A47G9/10
CPCA47G9/1036A61F7/02A61F7/10A61F2007/0002A61F2007/0219A61F2007/0249A61F2007/108
Inventor SETOKAWA, HIROTOKOBAYASHI, KAZUHIKOKANEMITSU, YUMI
Owner SUMITOMO RUBBER IND LTD
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