JPS6228745B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a heat compression molded sheet in which a large number of hollow protrusions are formed by heat compression molding. This relates to a thermocompression molded sheet in which a soft region in a low compression state remains compared to that of a thermocompression molded sheet.

FIG. 1 shows a cross-sectional view of a conventional thermocompression molded sheet.

In the figure, 1 is a flexible foam sheet made of materials such as soft urethane foam, polyethylene foam, vinyl chloride foam, etc., which is sandwiched between a male die 2 and a female die 3 for heat press, and then hot press molded. A large number of hollow protrusions 6 are formed by this method.

Such heat-compression molded sheets have good breathability because they have hollow protrusions, but when used as a pinerest, the human body does not come into close contact with the sheet, inhibiting sweating or causing discomfort, which prevents a good night's sleep. There is no such problem, and it is put into practical use as a healthy pine tress.

However, the conventional heat compression molded sheet has the following drawbacks.

1. Since the flexible foam sheet, which is the basis of the thermocompression molded sheet, is compressed on its entire surface, (a) there is almost no moisture absorption.

(b) Texture and sensation are poor.

2. In the intermediate region between adjacent hollow protrusions 6, a gap remains between the hollow protrusions 6 and the human body during use, and these gaps communicate with each other, so air can easily circulate through this area, and there is a lot of heat radiation, especially in the winter. The disadvantage is that heat retention is reduced.

The present invention has been made to eliminate the above-mentioned drawbacks, and its purpose is to prevent the gaps formed around adjacent hollow protrusions from communicating with each other, and to provide excellent moisture absorption and heat retention. Moreover, it is an object of the present invention to provide a heat-compression molded sheet that has a good feel and touch, and has an excellent texture.

In order to achieve the above object, in the present invention, a soft region in an uncompressed state or a low compressed state is left in an intermediate region between hollow protrusions having a high compression ratio and which are formed by hot compression molding.

An embodiment of the present invention will be described below with reference to the drawings.

FIG. 2 is a cross-sectional view of an embodiment of the thermocompression molded sheet of the present invention. In the figure, the same reference numerals as in FIG. 1 represent the same parts.

4 is a cotton layer laminated on the upper surface of the flexible foam sheet, 5F is a cloth outer fabric layer further laminated on the upper surface of the cotton layer 4, and 5R is a cotton layer laminated on the lower surface of the flexible foam sheet. The backing layer is made of soft cloth. 7 is a soft region left in an uncompressed state or in a compressed state lower than that of the hollow protrusions (therefore, in a relatively soft state) in an intermediate region between adjacent compression-molded hollow protrusions 6.

In addition, the above-mentioned front and back fabric layers 5F and 5R
The material must be of a type that stretches during the heat compression processing of the heat compression molded sheet as described below, and is preferably a knitted fabric, for example.

FIG. 3 is a cross-sectional view for explaining the method of manufacturing the hot compression molded sheet shown in FIG. 2, and FIG. 4 is a bottom view of the female die 3 for hot press used in FIG. The female die 3 for hot pressing in FIG. 3 is shown in cross section along the - line in FIG. 4.

During manufacturing, the lining fabric layer 5R, soft urethane foam 1, cotton layer 4, and outer fabric layer 5F are laminated in the above order, and this is sandwiched between the male mold 2 and female mold 3 for heat pressing from both sides to heat compression. do.

In this case, as shown in the figure, a cylindrical protrusion 3A is formed on the female die 3 for heat press, while a cylindrical protrusion 3A is formed on the male die 2 for heat press, and is disposed opposite to the cylindrical protrusion 3A during heat compression. Columnar projection 2A that fits into it
is formed.

Therefore, by the above-described heating compression, a hollow protrusion 6 with a high compression rate as shown in FIG. 2 is formed. At the same time, the hollow protrusions 6 adjacent to each other
A soft region 7 is formed in the intermediate region defined by .

Due to the existence of such a soft region 7, according to the present invention, the gap formed between the soft urethane foam 1 and the human body during use does not communicate with each other, and resistance to air circulation increases, so that moisture absorption is prevented. Improvements in properties and heat retention are realized.

Furthermore, according to this embodiment, the part that comes into direct contact with the human body is the outer fabric layer 5F, and between the outer fabric layer 5F and the soft urethane foam 1 there is a cotton layer 4.
Because of this, not only does it feel good on the skin, but its hygroscopicity and heat retention properties are also significantly improved.

In this case, the front and back fabric layers 5F, 5R
is not necessarily required and may be omitted.

FIG. 5 is a sectional view of another embodiment of the present invention,
The same reference numerals as in FIG. 2 represent the same or equivalent parts.

As is clear from the comparison with FIG. 2, this embodiment is a modification of the embodiment shown in FIG. 2 as follows.

1 Not only the top surface of the soft urethane foam 1,
A similar cotton layer 4R is laminated on the lower surface as well.

2. The soft region 7 is not made to protrude to the same side as the hollow protrusion 6 (in the figure, above the soft urethane foam 1), but to the opposite side (below the soft urethane foam in the figure).

A person skilled in the art can easily guess the arrangement of each material and the configuration of the male mold and female mold for hot pressing to produce the heat compression molded sheet having the above-mentioned configuration, so the explanation thereof is as follows. Omitted.

In each of the embodiments described above, it is a matter of course that an appropriate adhesive layer may be interposed between the laminated layers, if necessary.

Further, as the shape of the heat compression molded hollow protrusion 6, a bowl-shaped shape is preferable because it is strong against compressive strength, but other shapes such as a conical shape, a triangular pyramid shape, a square pyramid shape, a triangular prism shape, a square prism shape, An appropriate hollow protruding shape such as a pentagonal prism shape or a diamond shape may be provided, or
A combination of these may also be used.

Further, the arrangement of such hollow protrusions 6 is arbitrary, and the pressure resistance strength thereof may be partially different.

For example, in consideration of the use as a pine tress with an acupressure effect, which is one of the products using a heat-compression molded sheet, the hollow protrusion 6, which has a stronger compression strength, is placed in the so-called pressure points of the human body. May be placed. At this time, the interval between the hollow protrusions 6 is
Needless to say, it must be determined from the viewpoint of acupressure therapy.

Furthermore, depending on the application, the hollow protrusions 6 may not be provided uniformly over the entire surface of the thermocompression molded sheet, but may be provided only at partial positions.

Further, in the above, a laminate of a flexible foam sheet and a cotton layer was used as the material for the sheet to be thermally compression molded, but the present invention is not limited to this.1 Only the flexible foam sheet2 Only cotton (especially synthetic cotton)3 Mixed cotton (mixture of synthetic cotton and natural cotton)
Only 4 Any sheet such as a laminate of natural cotton and synthetic cotton can be used.

As is clear from the above description, according to the present invention, a soft region is left between adjacent heat compression molded hollow protrusions, so that the gaps formed around the hollow protrusions during use are mutually Communication is sufficiently prevented, resistance to air circulation increases, and heat retention and moisture absorption can be improved.

Furthermore, as in the embodiment shown in FIG. 2, when the outer surface that comes into direct contact with the human body is made of cloth, and a cotton layer is interposed between the cloth and the flexible foam sheet, the following occurs. Additional effects are achieved.

1. Good texture and texture.

2 Moisture absorption and heat retention are further improved.

3 It has a good texture and looks good.

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing a conventional heat compression molded sheet together with a hot press mold for manufacturing the sheet, FIG. 2 is a sectional view of a heat compression molded sheet according to an embodiment of the present invention, and FIG. 3 is its manufacture. 4 is a bottom view of the female die for hot press used in FIG. 3, and FIG. 5 is a sectional view of a hot compression molded sheet according to another embodiment of the present invention. 1... Soft urethane foam, 2... Male die for heat press, 3... Female die for heat press, 4, 4R... cotton layer, 5R, 5F... fabric layer, 6... hollow protrusion,
7... Soft area.

Claims (1)

[Scope of Claims] 1. A thermocompression-molded sheet formed by dispersing a large number of hollow protrusions with a high compression rate on its surface, wherein the hollow protrusions are formed by thermal compression and are adjacent to each other. A thermocompression molded sheet characterized in that a soft region in an uncompressed state or a low compressed state is left in the middle region of the hollow protrusion. 2. The thermocompression molded sheet according to claim 1, wherein the thermocompression molded sheet comprises a cotton layer and a fabric layer laminated in the above order on the upper surface of a flexible foam sheet. .