JP2004089594A - Pillow - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a pillow by which proper cushioning property is obtained so as to support the head and the cervical vertebra in a natural condition and to suppress pressing the head and the crest, and which has no inconvenience such as filling of inside with heat. <P>SOLUTION: The pillow 1 is constituted by piling a cushion layer 3 on the upper surface and lower surface of a core material 2. The core material 2 is formed by bonding airtight sheet materials 5a and 5b to the surrounding of the foam material 6 of open cells to seal and surround the foam material 6 and forming an air intake 7 at a prescribed site. A polyurethane foam of a high-ventilation material is used for the cushion layer 3 to obtain the proper cushioning property and load decentralization property by the balance of circulation of air from the air intake 7 and the elasticity of the foam material 6. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a pillow that distributes the weight of the head evenly and is effective in suppressing pressure on the head and neck.
[0002]
[Prior art]
Conventionally, as the core material of the pillow, those using various materials such as buckwheat, panya, feathers, and synthetic resin foam are known, and in order to obtain comfortable cushioning properties, a plurality of materials having different elastic moduli and the like are used. Pillows laminated are also known. (For example, refer to Patent Document 1).
[0003]
[Patent Document 1]
Published Japanese Utility Model Application No. Hei 6-17559
[Problems to be solved by the invention]
By the way, it is preferable that the condition of the pillow is such that an appropriate cushioning property is obtained, the head and the cervical vertebra are supported in a natural state, and the head and the neck are not pressed.
At this time, it is more preferable that the weight of the head is evenly distributed and that moisture and heat can be radiated.
[0005]
Therefore, the present invention provides a moderate cushioning property, supports the head and cervical vertebrae in a natural state, suppresses the compression of the head and neck muscles, and distributes the weight of the head evenly It is another object of the present invention to provide a pillow free from defects such as moisture and heat.
[0006]
[Means for Solving the Problems]
In order to achieve the above object, the present invention provides a pillow in which a cushion layer is laminated on an upper surface and a lower surface of a core material, wherein, as the core material, an airtight sheet material is adhered around an open-cell foam material and hermetically sealed. In addition, an air intake port is provided at a predetermined position, and the cushion layer is made of polyurethane foam.
[0007]
As described above, as the core material, an airtight sheet material is adhered to the periphery of the open-cell foam material, hermetically sealed and surrounded, and an air intake port is provided at a predetermined position, and the air intake port is opened and used. If, for example, the position of the head is moved by turning over, etc., immediately after the movement, appropriate cushioning properties as the core material will be exhibited as a core material due to the flow of air from the air intake and the elasticity of the core foam material. And even after sinking, there is no feeling of bottom.
In addition, the core portion where the load is no longer applied is restored by sucking air due to the elasticity of the foam material, so that the head and cervical vertebra can always be supported in a natural state.
[0008]
Here, as a core material in which an air-tight sheet is adhered to the periphery of the open-cell foam material to hermetically surround and form an air intake port at a predetermined position, for example, Japanese Patent No. 2987036 proposed by the present applicant A self-expanding foam enclosure or the like is applicable. Examples of the open-cell foam material include a tensile strength of 0.5 kg / cm ² or more, an elongation of 150% or more, a tear strength of 0.20 kg or more, and a rebound resilience of 30 or more. % Or more, foam materials such as urethane, polyester, PVC, polyethylene, polybutadiene, and rubber can be used. Further, as the airtight sheet material, a sheet of polyvinyl chloride, polyethylene, polyacetate, polyvinyl alcohol, or the like is suitable, and as an adhesive for bonding these, epoxy-based, acrylic-based, rubber-based, urethane-based, etc. The well-known thermosetting adhesive is suitable.
[0009]
Further, by using a polyurethane foam for the cushion layer, the feel is good and a soft feeling can be obtained.
At this time, if the polyurethane foam is a low-rebound polyurethane foam having a rebound resilience of about 1 to 20% as measured by the method A of JIS K 6400 (1997), the load can be more evenly dispersed. This is preferable because the head and neck are hardly pressed.
[0010]
In the present invention, the polyurethane foam of the cushion layer is made of a highly permeable material.
In this way, if the polyurethane foam of the cushion layer is made of a highly breathable material, a refreshing feeling can be obtained without the dampness or heat of sweat on the pillow.
[0011]
Here, the highly air-permeable polyurethane foam refers to a foam having an air permeability of 1 to 4.7 dm ³ / s measured by a method based on the method B of JIS K 6400 (1997). A polyurethane foam as disclosed in Japanese Patent Application No. 2002-194132 is applicable.
[0012]
BEST MODE FOR CARRYING OUT THE INVENTION
An embodiment of the present invention will be described with reference to the accompanying drawings.
Here, FIG. 1 is a perspective view showing a configuration example of a pillow according to the present invention, FIG. 2 is an exploded perspective view showing an internal structure of the pillow, FIG. 3 is a cross-sectional view of the pillow, and FIG. It is explanatory drawing of an example.
[0013]
The pillow according to the present invention has an appropriate cushioning property, supports the head and cervical vertebrae in a natural state, suppresses pressure on the head and neck, and distributes the load evenly. It is made to be able to be made.
[0014]
That is, as shown in FIGS. 1 to 3, the pillow 1 is such that the cushion layer 3 is laminated on the upper surface and the lower surface of the core material 2 and the periphery thereof is covered with the side cloth 4. Is a self-expanding foam envelope, and the cushion layer 3 is a polyurethane foam.
[0015]
In the case of the present embodiment, the core material 2 uses a foam enclosure of Japanese Patent No. 2987036 proposed by the present applicant. The front and back two airtight sheet materials 5a and 5b are used to form an open-cell foam. The air-tight sheet material 5a, 5b and the contact surface of the foam material 6 are adhered over the entire area while enclosing the material 6 so as to be sandwiched therebetween, and an air intake port 7 is formed at a predetermined position.
[0016]
Hereinafter, an example of a method of manufacturing the core material 2 will be described with reference to FIG. 4 in order to facilitate understanding of the structure. The adhesive is applied to the entire area of one side of the airtight sheet materials 5a and 5b sent out from the rolls 11 and 12. The thermosetting adhesive is applied by the application roller 13, and the foam material 6 narrower than the adhesive application surface is continuously supplied at predetermined intervals downstream of the thermosetting adhesive, and the foam material 6 is sandwiched by the lamination roller 14. To produce a laminated product. When the continuously formed laminate is cut at predetermined intervals, the foam material 6 is wrapped by the upper and lower airtight sheet materials 5a and 5b, and the foam material 6 and the airtight sheet material 5a are cut. , 5b are adhered over the entire area, and the airtight sheet materials 5a, 5b are adhered to each other at the outer portion of the foam material 6 to obtain a foam enclosure in which the inside is hermetically sealed.
[0017]
Next, a part of the peripheral adhesive portion of the airtight sheet material 5a, 5b is partially cut off, and if necessary, an air intake port 7 is formed by using a pipe or the like. The open-cell foam material 6 absorbs air, self-expands by elastic force, and changes into a three-dimensional shape.
Such a core material 2 exhibits an appropriate cushioning property due to the flow of air from the air intake port 7 and the elasticity of the foam material 6, so that even if the core material 2 sinks under load, it has a feeling of bottoming. There is no. Further, when the load applied up to that point is released, the foam material 6 in the same portion sucks air and is restored by elasticity.
[0018]
Here, in the case of the examples, the open-cell foam material 6 is a flexible polyurethane having characteristics of a tensile strength of 0.6 to ² kg / cm ² , an elongation of 150 to 200%, and a tear strength of 0.27 to 0.8 kg. A foam is used, and PVC is used as the air-tight sheet materials 5a and 5b, and the core material 2 is formed in a self-expanded state with a center portion slightly depressed.
[0019]
The cushion layer 3 is made of a highly permeable polyurethane foam. In this embodiment, the air permeability measured by a method based on the method B of JIS K 6400 (1997) is 1 to 4.7 dm ^3. / S polyurethane foam.
In the case of this example, the load is further increased by using this polyurethane foam as a low-rebound polyurethane foam having a rebound resilience of 1 to 20% as measured by a method based on the method A of JIS K 6400 (1997). It is dispersed to prevent the head and neck from being compressed.
[0020]
By the way, as such a highly breathable low resilience polyurethane foam, for example, of the polyol component and the polyisocyanate compound blended and formulated as a resin component of a general low resilience polyurethane foam, the polyol component, the high molecular weight polyol A mixed polyol to which a low molecular weight polyhydric alcohol is added is formed, and the mixed polyol component is allowed to react with a polyisocyanate compound to be molded.
[0021]
Then, such a cushion layer 3 is laminated and integrated on the upper and lower surfaces of the core material 2 by bonding or the like, and a bag-shaped side cloth 4 is put on the periphery.
In this embodiment, a low resilience polyurethane foam is used as the cushion layer 3. However, since excellent cushioning properties and load dispersibility can be obtained only by the effect of the core material 2, a general cushion layer 3 is used. Polyurethane foam can be used.
[0022]
In the present embodiment, the side fabric 4 is a fine pile fabric that can obtain a soft touch with a soft touch, and is mounted so as to wrap around the cushion layer 3 as described above.
[0023]
The operation and the like of the pillow 1 described above will be described.
For example, when the position of the head with respect to the pillow 1 changes due to turning over, the core material 2 at the place where the load is applied sinks and supports the head. At this time, immediately after moving the head, the foam material of the core material 2 is used. Due to the elasticity of the core material 6 and the flow of air from the air intake port 7, an appropriate cushioning property is obtained as the core material 2. After sinking, the foam material 6 is supported by the elastic force of the foam material 6, and a feeling of bottoming does not occur.
Further, since the core material 2 at the position where the load is removed absorbs the air and restores the original state, the head and the cervical vertebra can always be supported in a natural state.
Further, since the cushion layer 3 is made of a material having air permeability, it can be used comfortably without diffusion of moisture and heat.
[0024]
At this time, if a low resilience polyurethane foam similar to the cushion layer 3 is used instead of the core material 2 as described above, and all three layers are made of the low resilience polyurethane foam layer, the core material 2 when a load is applied is formed. When the sinking amount is too large, a feeling of bottoming occurs, and when the core material 2 is slowly restored when the load is released, and frequently turns over, the cushioning property is not good. However, the pillow 1 does not have such a problem.
[0025]
When the cushion layer 3 on the upper surface and the lower surface is made of the same structure as the core material 2 instead of urethane foam, and all the three layers are made the same structure as the core material 2, the touch feeling is deteriorated and the whole becomes a little. It becomes harder and less soft and soft.
[0026]
By the way, when manufacturing the foam material 6 of the core material 2 as described above, by adding a fragrance to the polyol component, if the foam material 6 is aroma, for example, when the position of the head is changed, The scent can flow out of the air intake 7.
If a refreshing and calming scent, such as a flower scent or a wood scent, is added as such a scent, the scent becomes refreshing and a restful sleep can be invited.
[0027]
Note that the present invention is not limited to the above embodiments. Those having substantially the same configuration as those described in the claims of the present invention and exhibiting the same functions and effects belong to the technical scope of the present invention.
For example, the shape of the pillow 1 is arbitrary.
[0028]
【The invention's effect】
As described above, the pillow according to the present invention has a cushion layer laminated on the upper surface and the lower surface of a core material, and as a core material, an air-tight sheet material is adhered to the periphery of the open-cell foam material to hermetically seal and surround the pillow. Since the air intake is provided in the part and the cushion layer is made of polyurethane foam, the cushioning and load dispersibility are moderate as a core material due to the balance between the air flow from the air intake and the elasticity of the core foam material. Can be obtained, and there is no feeling of bottom.
In addition, by using a polyurethane foam for the cushion layer, the softness and feel can be improved.
At this time, if the polyurethane foam of the cushion layer is made of a highly permeable material, moisture is diffused and at the same time, a refreshing feeling can be obtained without retaining heat in the pillow.
[Brief description of the drawings]
FIG. 1 is a perspective view of a configuration example of a pillow according to the present invention. FIG. 2 is an exploded perspective view showing an internal structure of the pillow. FIG. 3 is a cross-sectional view of the pillow. FIG. Explanation diagram [Explanation of reference numerals]
DESCRIPTION OF SYMBOLS 1 ... Pillow, 2 ... Core material, 3 ... Cushion layer, 5a, 5b ... Airtight sheet material, 6 ... Foam material, 7 ... Air intake.

Claims (2)

A pillow in which a cushion layer is laminated on an upper surface and a lower surface of a core material. Pillow, wherein the cushion layer is a polyurethane foam. The pillow according to claim 1, wherein the polyurethane foam of the cushion layer is a highly breathable material.

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