JP2912477B2 - mattress - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mattress, and more particularly, to a mattress using a padding excellent in flexibility and suitable for a floor-bed undulating bed.

[0002]

2. Description of the Related Art For example, when medical treatment is required for a long time at home or in a hospital, the functionality of a bed to be used is extremely important. That is, it is necessary to have appropriate compression hardness and cushioning with little settling, as well as appropriate air permeability and heat retention. In addition, in terms of functions, most of them are configured with floorboard undulations to make it easy for the patient to wake up and take a comfortable posture during meals and other occasions, and the mattress also needs to bend following the undulation of such floorboard. There is a need for one that bends relatively easily.

[0003] Conventionally, as mattresses, there are well-known mattresses filled with a cushioning material of a fibrous structure such as a plastic foam such as a polyurethane foam or a thick nonwoven fabric, or a mattress containing a spring.

[0004] However, plastic foams such as polyurethane foams are generally too soft, lack air permeability, tend to be stuffy, and cannot be said to be comfortable for long-term caregivers. In addition, mattresses that use ordinary fiber-filled fillings and mattresses that include springs have moderate hardness and cushioning properties, but have no flexibility and are suitable for floor-bed undulating beds. Absent.

[0005] As a filling material for a mattress having flexibility and flexibility suitable for a bed with an up-and-down floor, a mattress for a patient in which grooves are formed vertically and horizontally at symmetrical positions on the front and back of a semi-rigid plastic foam thick plate as shown in FIG. Filling is known. (Japanese Utility Model Publication No. 57-24346, Japanese Utility Model Publication No.
No. 27458)

However, the above-mentioned mattress filling is made of a thick plate made of a semi-rigid plastic foam such as expanded polystyrene or polyethylene foam, has no air permeability of the material itself, and has a groove having a thickness of the plastic foam. It is extremely small, and there is a problem that the groove is easily damaged by repeated bending.

Therefore, instead of the semi-rigid plastic foam, it is conceivable that the fibrous structure has the above-described form. In this case, the air permeability is extremely good, but the flexibility is slightly insufficient. .

Further, Japanese Patent Application Laid-Open No. 1-299507 discloses a cushion material having a structure as shown in FIG. 6 as a material having improved flexibility using a fiber structure. That is, an assemblage of countless crimped staples, a flat plate member formed by performing needle punching is bent continuously and alternately in the vertical direction, connected to form a corrugated sheet, and held as a mattress cushion material. It is. However, in this cushioning material, the corrugated sheet shape is easily broken by external pressure, and in order to hold the corrugated sheet, a large number of threads are passed in a direction perpendicular to the corrugated sheet (longitudinal direction), or the entire mat is covered with cloth and reinforced. Is required, and it is difficult to withstand long-term repeated bending.

[0009]

SUMMARY OF THE INVENTION The present invention has been made in consideration of the above-mentioned problems, and has as its object to provide a cushion having a moderate hardness and a small settling which are required for a mattress. An object of the present invention is to provide a mattress having flexibility and excellent flexibility, which is particularly suitable for floorbed undulating beds used in medical facilities.

[0010]

An object of the present invention is to provide a cushion material made of non-woven fabric having a large number of grooves formed laterally on both sides thereof, and the width of the upper part of the grooves is 20 to 40 mm.
This is achieved by a mattress using a filling that is characterized by being formed as follows.

The nonwoven fabric applied to the present invention includes natural fibers,
It is composed of inorganic fibers, regenerated fibers or synthetic fibers, but is preferably a non-woven fabric in which fibers mainly composed of synthetic fibers such as polyester fibers and polyolefin fibers are entangled.

The fibers constituting the nonwoven fabric used in the present invention have a fineness of 2 to 150 denier and a fiber length of 20 in that they have appropriate hardness and cushioning properties and are excellent in durability.
Polyester short fibers of ~ 76 mm are preferred. If the fineness is too small, the bulk is not obtained and the cushioning properties are poor,
Those with too large a fineness lack flexibility.

The cushioning material made of nonwoven fabric according to the present invention is preferably made by suitably mixing a core-sheath type composite binder fiber such as polyester, nylon, polypropylene, polyethylene or the like, and forming the web by a cross-layer method or an air-lay method through a usual card. And a non-woven fabric entangled by means such as needle punching or heat fusion.
In particular, it includes a high melting point polyester short fiber having a fineness of 2 to 20 denier and a fiber length of 30 to 76 mm, and a polyester short fiber having a melting point of 50 ° C. or more lower than the polyester short fiber, and the short fiber is irregularly three-dimensionally. Entangled, at least a part of the entangled portion is integrally fixed by joining points formed by melting of low-melting polyester short fibers, and is made of a polyester nonwoven fabric having a density of 0.005 to 0.15 g / cm ^3. Are preferred.

In the cushion material made of nonwoven fabric according to the present invention, a large number of grooves are formed at least in the lateral direction on both the front and back surfaces. The position at which such a groove is formed is not a symmetrical position, but is formed such that the front and back grooves are substantially in the middle of the surfaces facing each other. By configuring the position of the groove in this way, the groove is not hardened and the flexibility is improved as compared with the case where the groove is formed at a symmetrical position on the front and back.

The depth and spacing of the grooves are not particularly limited, and may be set appropriately according to the thickness of the nonwoven fabric cushion material and the required flexibility. For example, 100m thick
m, the depth is preferably about 15 to 30 mm, and the interval is preferably about 80 to 120 mm. The width of the upper part of the groove is preferably about 20 to 40 mm because the unevenness of the mat surface is reduced.

In the present invention, the grooves may be formed on the entire upper and lower surfaces at regular intervals. However, as shown in FIG. 2, at least the portions to be bent in actual use may be formed so as to be easily bent. . Further, if necessary, a groove may be formed not only in the horizontal direction but also in the vertical direction in order to facilitate turning over, so that flexibility may be imparted.

[0017]

The present invention will be described below in detail with reference to examples. Before that, a method for measuring the flexibility of the mattress filling in the present specification will be described.

<Flexibility> JIS L1096-6.19
(Rigidity) Measured according to the B method (slide method). FIG.
As shown in the figure, the filling (12) of the mattress is placed on the horizontal table (11), and the end of the filling (12) is extended from the horizontal table (11) by a length L (cm). . At this time, the height difference a (cm) from the position of the upper surface of the filling to the upper end portion (13) of the filling was measured, and the value a was defined as a numerical value indicating the flexibility at the length L.

Example 1 High melting point polyester short fiber (denier 13 denier, length 5
1 mm) and low-melting polyester short fiber (denier: 3 denier, length: 51 mm) were mixed at a ratio of 80:20, and after spreading, carded into a thin sheet to form a web laminated by a cross-wrapper method. After heat treatment, the laminated product was sandwiched from above and below with a metal plate having plate-like projections projecting at predetermined intervals in the horizontal direction, and subjected to stamping heat treatment with steam to form a mattress of the present invention as shown in FIG. I got a filling to use. When sandwiching between the above-mentioned metal plates, the plate-like projections projecting from the metal plate were set so as to be alternately arranged vertically.

The padding thus obtained is made of a nonwoven fabric cushion material having a thickness of 100 mm, a density of 0.035 g / cm ³ , a width of 85 cm, and a length of 191 cm.
The grooves were formed at intervals of 00 mm, at a depth of 20 mm, and on the upper and lower surfaces so that the positions of the grooves were alternated as shown in FIG. Table 1 shows the physical properties of the obtained filling.
As shown in FIG. It had moderate hardness and cushioning properties, had good durability against compression, and was excellent in air permeability.

[0021]

[Table 1]

The flexibility of the mattress filling obtained is shown in Table 2.
As shown in the figure, it was extremely flexible.

Subsequently, the obtained filling was covered with a cloth covering material to obtain a mattress as shown in FIG. The obtained mattress had appropriate hardness and cushioning property, had good air permeability, obtained favorable flexibility following the undulating operation of the floorboard undulating bed, and was extremely excellent in handleability.

Comparative Example A mattress pad was obtained in the same manner as in Example 1 except that the positions of the grooves formed on the upper surface and the lower surface were symmetrical as shown in FIG. Was. The flexibility of the obtained filling is as shown in Table 2, and Example 1
It was poor in flexibility compared to.

Example 2 A mattress pad was prepared in the same manner as in Example 1 except that the depth of the groove was 25 mm. The flexibility was very excellent as shown in Table 2.

[0026]

[Table 2]

[0027]

As described above, the mattress of the present invention has excellent flexibility and is very suitable for use as a floor-bed undulating bed. In addition, the mattress of the present invention has good breathability, moderate hardness and cushioning property, is extremely comfortable, and is most suitable for long-term medical treatment.

[Brief description of the drawings]

FIG. 1 is a partially cutaway explanatory view showing an embodiment of the present invention.

FIG. 2 is an external view illustrating the filling of the embodiment.

FIG. 3 is a partially enlarged cross-sectional view illustrating a filling material of the embodiment.

FIG. 4 is a partially cutaway side view for explaining one use state of the floorboard undulating bed of the embodiment.

FIG. 5 is a partially enlarged cross-sectional view illustrating an example of a known mattress filling.

FIG. 6 is a partially enlarged sectional view illustrating an example of a known cushion material.

FIG. 7 is an explanatory diagram showing a method for measuring flexibility.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Mattress 2 Groove part 3 Nonwoven fabric filling 4 Covering material 5 Floor undulating bed 6 Semi-rigid plastic filling 7 Flat member 8 Connecting part 9 Bending part 10 Cushion material 11 Horizontal table 12 Mattress filling 13 Top end

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) A61G 7/05

Claims (1)

(57) [Claims] 1. A nonwoven fabric cushioning material comprising a plurality of grooves formed in the front and back sides in a lateral direction, and a plurality of grooves formed on said grooves.
A mattress using a filling, wherein the width of the portion is formed to be 20 to 40 mm .