JP2002078572A - Core material - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a core material which is lightweight and excellent in high air permeability and heat retaining property. SOLUTION: Many through holes 14 are provided on a plate-like core material body 11 made of a foam synthetic resin. The packing 12 made of unfilmed foam is filled in the through holes 14, and a sheet-like object 13 made of the unfilmed foam is fixed to both the surface and the back face of the core material body 11.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a core material widely applicable to beddings such as mattresses, mattresses and pillows, or cushions such as seat cushions and cushions, and more particularly to a lightweight and highly breathable material. And a core material rich in heat retention.

[0002]

2. Description of the Related Art Hitherto, there has been known a mattress or the like in which a flat core material made of a foamable synthetic resin such as a soft polyurethane is covered with an exterior body.

[0003] However, this kind of mattress core material is light and has excellent elasticity, but on the other hand, because of low air permeability, it tends to be stuffy, and moreover, it absorbs moisture due to sweat or the like and sticks. There is a problem in practical use.

In order to solve such a problem, it has been proposed to provide a through hole for ventilation in the above-mentioned mattress core material. Since the through hole is closed by the human body, it is difficult to improve the air permeability.

[0005]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned conventional problems, and an object of the present invention is to provide a core material which is lightweight and has high air permeability and heat insulation. To provide.

[0006]

In order to achieve the above-mentioned object, one of the present invention is to provide a plate-shaped core material body made of a foamed synthetic resin with a large number of through-holes, and to form a through-hole in the through-holes. And a sheet-like material made of a non-film-forming foam is fixed to both the front and back surfaces of the core material body.

[0007] According to the above structure, the filling made of non-membrane foam filled in the through hole of the core material body and the sheet material made of non-film forming foam fixed to both front and back surfaces of the core material body are connected to each other. Therefore, the sheet-like material or stuffing made of non-membrane foam at the part compressed by turning over while sleeping is the part where the air held by the compression is pushed outward and released from body pressure Outside air is taken in by the release (expansion) into the sheet-like material or the filling made of the non-membrane foam. Therefore, due to turning over while sleeping,
The air in the sheet-like material or the stuffing made of the non-membrane foam is exchanged, so that the temperature rise and humidity rise of the core material can be suppressed.

Further, by applying a profile processing to at least the front side of the front and back surfaces of the core material, an acupressure effect can be obtained.

On the other hand, another one of the present invention is to form a large number of through holes in a plate-shaped core material body made of a foamed synthetic resin, and to fill the through holes with a filling made of a non-membrane foam.
A lateral hole communicating with the through-hole is provided in the core material body, and the lateral hole is filled with a filling made of a non-membrane foam which is connected to the filling made of a non-membrane foam filled in the through-hole.

According to the above structure, the filling made of non-membrane foam filled in the through hole of the core material body and the filling made of non-membrane foam filled in the lateral hole of the core material body are connected to each other. Foam stuffing compressed by body pressure due to rolling over during bedtime, etc. Foam stuffing pushes air held out by compression to the outside, eliminating membrane pressure in areas released from body pressure Foam padding takes in outside air by release (expansion). For this reason, the air in the non-membrane foam filling is switched due to turning over during bedtime or the like, and it is possible to suppress an increase in the temperature and humidity of the core material.

[0011] In addition, the core material may have a sheet-like material made of a non-membrane foam adhered to both front and back surfaces of the core material body. Furthermore, by performing a profile process on at least the front side of the front and back surfaces of the core material, an acupressure effect can be obtained.

As the synthetic foam resin for forming the core material body, polyurethane foam, polystyrene foam, polyethylene foam and the like are preferable.

[0013] The non-membrane foam is an air-permeable synthetic resin foam produced by an explosion method or a chemical method. The explosion method is based on a cellular material such as polyurethane foam and a flammable gas. Is enclosed in a pot having an explosion-proof structure, and is ignited to explode to make the membrane non-filmable (see Japanese Patent Publication No. 41-752). In the chemical method, a cellular material such as polyurethane foam is dissolved in an alkaline solution. (See Japanese Patent Publication No. 34-8137).

Further, the profile processing means compressing a foamed synthetic resin such as polyurethane foam which passes between the upper and lower rolls having a predetermined uneven surface,
At the same time, it refers to a method in which the compressed foam is divided into two by a blade provided between both rolls. Then, by performing the processing, an uneven surface basically formed of a peak and a valley is formed on the surface to be processed.

[0015]

Embodiments of the present invention will be described below with reference to the drawings. In this embodiment, a core material for a mattress is taken as an example.

A ) First Embodiment FIG. 1 is a plan view showing a first embodiment of a core material for a mattress, and FIG. 2 is an AA enlarged sectional view of FIG. As shown in FIG. 1, the core material 10a for a mattress is schematically divided into three parts a, b, and c corresponding to a human head, a waist, and a leg. For b and c,
A disk-shaped filling 12 is embedded like a grid.

However, the padding 12c in the leg part c
Has a smaller number of rows than the paddings 12 in the other portions a and b, and is shifted in phase by half a pitch in the lateral direction of the core 10a. The arrangement of the paddings 12 is not limited to this. For example, the paddings may be arranged in a staggered manner, or the number of holes per unit area may be changed locally, and an appropriate opposing force may be applied to the body pressure. Can be provided.

As shown in FIG. 1 and FIG.
a is composed of a single core material body 11, a large number of paddings 12, and two front and back sheets 13. The core material main body 11 is a rectangular flat plate, and is formed of a flexible polyurethane foam. The core material body 11 has a disk-shaped filling 12 formed of a non-membrane foam at the above-mentioned site.
Is buried. More specifically, the disk-shaped filling 12 is filled in a large number of through holes (also referred to as vertical holes) 14 provided in the core body 11. Further, a rectangular sheet 13 made of a non-membrane foam is fixed to both the front and back surfaces of the core body 11. The disk-shaped filling 12
It adheres tightly to a sheet-like material 13 made of a non-film-forming foam which is fixed to both the front and back surfaces of the core material body 11, so that air can pass between the two.

Next, the operation of the core material will be described. The core material 10a of the present invention is formed by the through hole 1 of the core material body 11.
Disc-shaped filling 12 made of non-membrane foam filled in 4
And the sheet-like material 13 made of a film-free foam fixed to both the front and back surfaces of the core material body 11 are connected to each other, so that the sheet-like material made of the film-free foam at a portion compressed by rolling over while sleeping, etc. The material 13 and the disc-shaped stuffing 12 are compressed into a sheet-like material 13 and a disc-shaped stuffing 12 made of a non-membrane foam in a portion where the air held by the compression is pushed outward and the body pressure is released. , Outside air is taken in by release (expansion).

Therefore, the air in the sheet-like material 13 or the disk-like filling 12 made of a non-membrane foam is replaced by turning over during bedtime, and the temperature rise and humidity rise of the core material 10a can be suppressed. it can.

If desired, profile processing (not shown) is performed on at least the front side of the front and back surfaces of the core body 11.
, An acupressure effect can be obtained.

The shape of the filling 12 made of a non-membrane-filled foam filled in the through-hole 14 may be a shape other than a disk shape.

B) Second Embodiment FIG. 3 is a plan view of a core material for a tri-fold mat product, FIG. 4 is a side view in an A direction, and FIG. 5 is a side view in a B direction. As shown in FIG. 3, the core material 10 b includes a core material main body (hereinafter, referred to as a main body) 21 and various kinds of fillings 22, 29, and 30 attached to the main body 21.

The main body 21 is formed of a flexible polyurethane foam as a rectangular flat plate having required vertical and horizontal dimensions and thickness. However, since it is a core material for a tri-fold mat product, its length is formed to be 1/3 of the usual mat length.

The main body 21 is provided with a large number of through holes (also referred to as vertical holes) 25 in the vertical direction, and is filled with a disk-shaped filling 22 made of a non-membrane foam. Through hole 2
5 are arranged in a grid pattern, but the arrangement of the through holes 25 is not limited to such an arrangement. For example, the arrangement of the through holes 25 may be arranged in a staggered manner, or the holes per unit area may be locally formed. The number can be changed so that an appropriate opposing force can be applied to each part with respect to the body pressure.

Furthermore, in the present invention, the lateral hole 27 in the lateral direction and the lateral hole 2 in the longitudinal direction communicating with the through hole 25 are formed.
8, the lateral hole 27 in the lateral direction is filled with a cylindrical filling 29 made of a non-film-forming foam (see FIG. 7), and the lateral hole 28 in the longitudinal direction is filled with a cylindrical filling 30 of a non-film-forming foam. (See FIG. 6). This cylindrical filling 29, 30
Are in close contact with the above-mentioned disk-shaped filling 25. The fixing between the main body 21 and the fillings 29 and 30 is performed by an adhesive. The horizontal holes 27 and 28 are provided in parallel with both the upper and lower surfaces of the main body 11. When the through holes 25 are provided in a staggered manner, the lateral holes are only lateral holes in the lateral direction or the longitudinal direction. Also,
If desired, only the longitudinal side hole 28 or the lateral side hole 27 may be provided.

Next, the operation of the core material will be described. The core material 10b of the present invention is formed in the through hole 2 of the core material body 21.
Disc-shaped filling 22 made of non-membrane foam filled in 5
And the film-filled cylindrical fillings 29, 30 filled in the lateral holes 27, 28 of the core material body 11 are in close contact with each other. The foamed disc-shaped fillings 22 and the column-shaped fillings 29 and 30 are made of a non-membrane foamed disc at the portion where the air held by the compression is pushed outward and released from body pressure. Stuffing 22 and cylindrical stuffing 29,
The outside air 30 is taken in by release (expansion).

Therefore, the air in the non-membrane foam fillings 21, 29, and 30 is replaced by turning over during bedtime, and the rise in temperature and humidity of the core 10b can be suppressed.

When the sheet-like material made of the film-free foam is fixed to the front and back surfaces of the core material main body 21, the air in the sheet-like material made of the film-free foam is exchanged due to turning over during bedtime, and It is possible to suppress an increase in temperature and humidity of the core material. By applying a profile process (not shown) to at least the front and back surfaces of the core body 21, an acupressure effect can be obtained.

Further, the disk-shaped filling 22 and the column-shaped fillings 29 and 30 may have other shapes.

In the above description, the core material for mattress has been described. However, the present invention is not limited to this, and the mattress,
It can be widely used as a core material such as pillows, healthy bedding, cushions and cushions.

[0032]

As described above, according to one aspect of the present invention, a large number of through holes are provided in a plate-shaped core material body made of a foamed synthetic resin, and the through holes are filled with a filling made of a non-membrane foam. And, since the sheet-like material made of non-membrane foam is fixed to the front and back surfaces of the core material main body, air in the sheet-like material and stuffing made of non-membrane foam may be caused by rolling over while sleeping. In other words, the temperature rise and humidity rise of the core material can be suppressed. In addition, by applying a profile processing to at least the front and back surfaces of the core material main body, an acupressure effect can be obtained.

On the other hand, another one of the present invention is to provide a large number of through holes in a plate-shaped core material body made of a synthetic resin foam, fill the through holes with a filling made of a non-membrane foam,
The above-mentioned core material body is provided with a lateral hole communicating with the through hole, and the lateral hole is filled with a film-filled foam filling material connected to the film-filled foam filling material filled in the through-hole. In addition, the air in the filling made of non-membrane foam is exchanged, and the rise in temperature and humidity of the core material can be suppressed. In addition, when a sheet-like material made of non-membrane foam is adhered to both front and back surfaces of the core material body, air in the sheet material made of non-membrane foam is exchanged due to turning over during bedtime, and the temperature of the core material increases. The rise and humidity rise can be suppressed. Furthermore, by applying a profile processing to at least the front and back surfaces of the core material main body, an acupressure effect can be obtained.

[Brief description of the drawings]

FIG. 1 is a plan view showing a first embodiment of a core material according to the present invention.

FIG. 2 is an enlarged sectional view taken along line AA of FIG.

FIG. 3 is a plan view showing a second embodiment of a core material according to the present invention.

FIG. 4 is a side view in the direction A of FIG. 3;

FIG. 5 is a side view in the B direction of FIG. 3;

FIG. 6 is an enlarged sectional view taken along the line CC of FIG. 3;

FIG. 7 is an enlarged sectional view taken along the line DD of FIG. 3;

[Explanation of symbols]

 11 Core material body 12 Filling made of non-membrane foam 13 Sheet-shaped material made of non-membrane foam 14 Through hole

Claims (4)

[Claims] 1. A plate-shaped core material body made of a foamed synthetic resin is provided with a large number of through holes, and the through holes are filled with a filling material made of a non-membrane foam. A core material, wherein a sheet-like material made of a non-film-forming foam is fixed. 2. A plurality of through-holes are provided in a plate-shaped core material body made of a synthetic resin foam, and the through-holes are filled with a padding made of a non-membrane foam. Further, the core material body is communicated with the through-holes. A core material, wherein a filling material made of a non-membrane-filled foam is connected to the filling material made of a non-film-forming foam filled in the through hole. 3. The core material according to claim 2, wherein a sheet-like material made of a non-film-forming foam is fixed to both front and back surfaces of the core material body. 4. The core material according to claim 1, wherein at least the front surface of the front and back surfaces is subjected to profile processing.