JP3122662U - Futon core - Google Patents

Abstract

An object of the present invention is to provide a futon core that is small and light, has a high effect of reducing the feeling of stuffiness, and can also provide a shiatsu effect and the like.
A plurality of convex portions 2 and concave portions 3 are alternately provided in a regular arrangement on one side of a base portion 1 to form a sheet. One of the polyethylene foam 4 and the polyurethane foam 5 forms the base 1, and the other of the polyethylene foam 4 and the polyurethane foam 5 forms the convex portion 2 and the tip of the convex portion 2 is formed of the polyethylene foam. 4 and polyurethane foam 5 are formed. Since it forms with the polyethylene foam 4 and the polyurethane foam 5, it is small and can be reduced in weight. And when the convex part 2 is compressed or recovered, air enters and exits between the convex part 2 and the concave part 3 so that the air in the core is easily exchanged, and the effect of reducing the stuffiness is enhanced. While being able to obtain, the acupressure effect can also be acquired by the convex part 2. FIG.
[Selection] Figure 1

Description

  The present invention relates to the core of futons such as mattresses, comforters and other cushions.

  Futons such as mattresses are formed by covering a core with a bag-like cloth or covering a futon cotton. As this core, polyester solid cotton is generally used. However, when polyester compression is applied repeatedly, the polyester monofilament curls gradually extend and the elasticity decreases, and it is used over a long period of time. During this time, there is a possibility that so-called sag may be generated, the thickness of which decreases. In addition, since polyester solid cotton has a high apparent density, the weight of the entire futon becomes heavy, and there is a problem that the burden of raising and lowering the futon every day is heavy.

  Then, the inventor has proposed a core formed of a laminated foam obtained by laminating a polyethylene foam and a polyurethane foam (see Patent Document 1).

  Polyethylene foam and polyurethane foam have high durability against repeated compression, can reduce settling, and can be reduced in weight by polyurethane foam that can be formed at low density. Thus, by forming the core with a laminated foam made of a polyethylene foam and a polyurethane foam, it is possible to form a lightweight core with a small settling.

Moreover, in the futon formed using the core made of such a laminated foam, when the place compressed by weight moves when turning over, the air contained in the core enters and exits. Also, there is a feature that the feeling of stuffiness at the time of going to bed or the like can be reduced by changing the air in the core.
JP-A-8-196392

  However, since the laminated foam forming the core is formed in a layered structure in which polyethylene foam and polyurethane foam are laminated, the air in the core only enters and exits from the upper and lower surfaces and side surfaces. In addition, the efficiency of entering and exiting the air is not sufficient, and air containing moisture may stay in the core, and a feeling of stuffiness may be felt particularly when going to bed in summer. For this reason, there was room for improvement in terms of comfortable sleeping.

  The present invention has been made in view of the above points, and provides a futon core that is small and lightweight, has a high effect of reducing the feeling of stuffiness, and can also obtain a shiatsu effect and the like. It is intended.

  The futon core according to claim 1 of the present invention is a futon core formed in a sheet shape by alternately providing a plurality of convex portions 2 and concave portions 3 on one side of the base portion 1 in a regular arrangement. The base 1 is formed on one of the polyethylene foam 4 and the polyurethane foam 5, and the convex 2 is formed on the other of the polyethylene foam 4 and the polyurethane foam 5, and the tip of the convex 2 is foamed with polyethylene. One of the body 4 and the polyurethane foam 5 is formed.

  According to this device, the polyethylene foam 4 and the polyurethane foam 5 having high durability against repeated compression can reduce the settling, and the polyurethane foam 5 that can be formed at a low density can be reduced in weight. it can. When the convex portion 2 is compressed or recovered as the weight shifts when turning over, air enters and exits between the convex portion 2 and the concave portion 3 so that the air in the core is easily exchanged. It is done and can sleep comfortably with less stuffiness. Furthermore, the acupressure effect with respect to the person who sleeps can also be acquired by the convex part 2. FIG.

  The invention of claim 2 is characterized in that, in claim 1, at least one of the polyethylene foam 4 and the polyurethane foam 5 contains a functional material.

  According to this device, these functions can be exhibited by using, as the functional material, a material that emits negative ions, a material having an antibacterial / deodorizing effect, or the like.

  In the present invention, the futon core is formed of the polyethylene foam 4 and the polyurethane foam 5, so that the settling is small and the weight can be reduced, and the convex part 2 is compressed or recovered. In this case, air enters and exits between the convex portion 2 and the concave portion 3 so that the air in the core is easily exchanged. The acupressure effect can also be obtained by the part 2.

  Hereinafter, the best mode for carrying out the present invention will be described.

  The futon core A according to the present invention can be produced by profile processing a laminated foam 10 having a three-layer structure in which polyethylene foam 4 and polyurethane foam 5 are alternately laminated.

  Here, since the polyethylene foam 4 has high durability against repeated compression, the core A with reduced settling can be obtained. It is preferable to use a polyethylene foam 4 having an expansion ratio of 20 to 50 times. When the expansion ratio exceeds 50 times, durability against repeated compression is lowered, and there is a possibility that the reduction of the settling will be insufficient. On the other hand, if the expansion ratio is less than 20 times, the density may increase and it may be difficult to reduce the weight.

In addition, the polyurethane foam 5 has high durability against repeated compression and has an effect of reducing settling. In addition, the polyurethane foam 5 can be molded at a high expansion ratio and low density, so that the core A can be reduced in weight. . The polyurethane foam 5 may be any one such as polyether or polyester, but is preferably formed at a high expansion ratio of about 20 to 80 times. Such polyurethane foam 5 has an apparent density. It is formed at a low density of about 13 to 40 kg / m ³ .

  FIG. 2A shows a laminated foam 10 in which polyethylene foam 4 is laminated and integrated on both surfaces of polyurethane foam 5, and profile processing is performed on this laminated foam 10 so that FIG. The core A shown in FIG. 2 (b) can be produced. In the profile processing, as shown in FIG. 5, protrusions 13 and recesses 14 are provided on the outer periphery of the pressure roll 12 in a regular arrangement alternately in the circumferential direction and the axial direction. Can be performed using a profile cutting device formed by arranging a pair in parallel so as to face each other and arranging a cutter 15 between the pressure rolls 12 and 12. Then, the laminated foam 10 is passed between the pressure rolls 12 and 12 that are rotationally driven, and the laminated foam 10 is compressed between the convex 13 and the concave 14 of the pressure rolls 12 and 12, and the center in the thickness direction Is cut with a cutter 15 to obtain two cores A each having a plurality of convex portions 2 and concave portions 3 alternately and regularly arranged on the cut surface.

  In this way, by profile processing the laminated foam 10 in which the polyethylene foam 4 is laminated on both surfaces of the polyurethane foam 5, a large number of convex portions 2 and concave portions 3 are alternately arranged in a regular arrangement on one side of the base portion 1. The core A formed in a sheet shape can be produced. As shown in FIG. 1 and FIG. 2 (b), the base 1 is formed with the polyethylene foam 4, and the convex with the polyurethane foam 5. The most part of the part 2 is formed and the tip part of the convex part 2 is formed by the polyethylene foam 4. Further, the polyethylene foam 4 is exposed at the bottom of the concave portion 3 as the tip of the convex portion 2 is formed of the polyethylene foam 4 as described above.

  Here, in the laminated foam 10 of FIG. 2A, the polyurethane foam 5 at the center is formed to a thickness of 15 to 60 mm, and the polyethylene foam 4 on both sides is formed to a thickness of 5 to 20 mm. The thickness is set to 3 to 5 times the thickness of the polyethylene foam 4. And the height of the convex part 2 in which most of the polyurethane foam 5 is formed is 3 to 5 times the thickness of the base part 1 formed of the foamed polyethylene 4. The polyethylene foam 4 is generally strong and formed with a relatively high hardness, and the polyurethane foam 5 is soft and formed with a relatively low hardness. Thus, the height of the convex portion 2 made of the polyurethane foam 5 is as follows. Can be formed as the core A having a high cushioning property by forming 3 to 5 times the thickness of the base 1 made of foamed polyethylene 4.

  By winding the futon cotton 17 around the outer periphery of the core A formed in this way, or by overlapping the duvet cotton 17 on the upper and lower surfaces of the core A and wrapping them with the duvet side 18 made of a bag-like fabric, As shown in 6 (a), a futon B used as a mattress, a comforter, a cushion, or the like can be obtained. As the futon cotton 17, conventionally used ones such as wool, polyester fiber and cotton can be used. Moreover, the futon B as shown in FIG.6 (b) can be obtained by directly wrapping the core A with the futon side 18 produced with the bag-like cloth, without using the futon cotton 17. In the futon B obtained in this way, the core A is formed of the polyethylene foam 4 and the polyurethane foam 5 as described above, so that the occurrence of settling is small, the weight is light, and the heat insulation is high. Further, the futon B which is small and light in weight generation and has high heat retention can be obtained. In particular, the profile-processed core A can increase the weight and heat retention at the concave portion 3 while securing the thickness at the convex portion 2 to obtain a futon B superior in weight reduction and heat retention. It is something that can be done.

  Moreover, when using this futon B as a futon, the convex part 2 of the core A is compressed or restored to its original state by moving the portion compressed by the weight when turning over or the like. This is repeated, but at this time, the air in the convex portion 2 comes into and out of the concave portion 3, and the air in the core A is easily replaced. Therefore, moist air does not stay in the core A, so that the feeling of stuffiness when going to bed can be reduced, and the bed can be comfortably taken. In the embodiment of FIG. 1 in which the core A is formed of the polyurethane foam 5, this effect can be obtained particularly high. Furthermore, when sleeping with a futon B so that the convex part 2 of the core A is on the top, the convex part 2 of the core A partially strikes the body of the person who sleeps and gives a stimulus, thereby obtaining a shiatsu effect. It is also possible. Since the upper end part of the convex part 2 is formed with the comparatively hard polyethylene foam 4, this acupressure effect can be acquired highly. This acupressure effect can be obtained particularly high in the case of the futon B shown in FIG. 6B in which the core A is directly wrapped by the duvet side 18 of the cloth.

  FIG. 4 (a) shows a laminated foam 10 in which polyurethane foam 5 is laminated and bonded on both surfaces of polyethylene foam 4, and profile processing is performed on this laminated foam 10 in the same manner as described above. Thus, the core A shown in FIG. 3 and FIG. 4B can be manufactured. Thus, by processing the laminated foam 10 in which the polyurethane foam 5 is laminated on both surfaces of the polyethylene foam 4, a large number of convex portions 2 and concave portions 3 are alternately arranged in a regular arrangement on one side of the base portion 1. The core A formed in the form of a sheet can be produced. As shown in FIGS. 3 and 4 (b), the base 1 is formed with the polyurethane foam 5, and the convex with the polyethylene foam 4. The most part of the part 2 is formed, and the tip part of the convex part 2 is formed of the polyurethane foam 5. In addition, the polyurethane foam 5 is exposed at the bottom of the recess 3 as the tip of the protrusion 2 is formed of the polyurethane foam 5 in this way.

  Here, in the laminated foam 10 of FIG. 2A, the central polyethylene foam 5 is formed to a thickness of 5 to 20 mm, and the polyurethane foam 4 on both sides is formed to a thickness of 10 to 40 mm. The thickness is set to 2 to 3 times the thickness of the polyethylene foam 4. And the height of the convex part 2 in which most of the polyurethane foam 5 is formed is formed to be 1/2 to 1/3 times the thickness of the base part 1 formed of the foamed polyethylene 4.

  Using the core A thus formed, a futon A as shown in FIG. 6A or 6B can be obtained in the same manner as described above. In the futon B obtained in this way, the core A is formed of the polyethylene foam 4 and the polyurethane foam 5 as described above, so that the occurrence of settling is small, the weight is light, and the heat insulation is high. Further, the futon B which is small and light in weight generation and has high heat retention can be obtained. In particular, the profile-processed core A can increase the weight and heat retention at the concave portion 3 while securing the thickness at the convex portion 2 to obtain a futon B superior in weight reduction and heat retention. It is something that can be done.

  Moreover, when using this futon B as a mattress, it is possible to reduce the feeling of stuffiness when going to bed, as described above, and it is possible to sleep comfortably. Furthermore, when sleeping with a futon B so that the convex part 2 of the core A is on the top, the convex part 2 of the core A partially strikes the body of the person who sleeps and gives a stimulus, thereby obtaining a shiatsu effect. It is also possible. In the case of the core A in FIG. 3, most of the convex portion 2 is formed of a relatively hard and firm polyethylene foam 4, so that the acupressure effect by the convex portion 2 can be obtained particularly high. .

  Since the core A is formed of the polyethylene foam 4 or the polyurethane foam 5 as described above, a functional material can be contained in the bubbles of the polyethylene foam 4 or the polyurethane foam 5. As this functional material, materials selected from a material that releases negative ions such as tourmaline, an antibacterial agent, a deodorant, and an acaricide can be used. When the functional material is contained in the bubbles of the polyethylene foam 4 or the polyurethane foam 5, a method of filling fine bubbles of the functional material into the bubbles of the polyethylene foam 4 or the polyurethane foam 5, Arbitrary methods such as a method in which fine powder is dispersed in water and impregnated into polyethylene foam 4 or polyurethane foam 5 and then dried, or a method in which foaming raw material is mixed with a functional material are used for foam molding. can do. Thus, by including a functional material in the polyethylene foam 4 or the polyurethane foam 5, the core A containing the functional material can be produced, and a futon B having the functional material is obtained. It is something that can be done. Therefore, it becomes possible to be exposed to negative ions while sleeping on the futon B, and it is possible to perform antibacterial, deodorizing, and tick-proofing of the futon B.

It is a partial sectional view showing an example of an embodiment of the invention. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 shows an embodiment of the above, (a) is a perspective view of a laminated foam, and (b) is a perspective view of a center core. It is a partial sectional view showing other examples of an embodiment of the invention. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 shows an embodiment of the above, (a) is a perspective view of a laminated foam, and (b) is a perspective view of a center core. It is a front view which shows profile processing. The futon using the core which concerns on this invention is shown, (a) (b) is each one part sectional drawing.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Base part 2 Convex part 3 Concave part 4 Polyethylene foam 5 Polyurethane foam

Claims (2)

  A core for a futon formed in a sheet shape by alternately providing a plurality of convex portions and concave portions in a regular arrangement on one side of the base portion, and forming a base portion on one of a polyethylene foam and a polyurethane foam, A core for a futon comprising a convex portion formed on the other of the polyethylene foam and the polyurethane foam, and a tip of the convex portion formed on one of the polyethylene foam and the polyurethane foam. The core for futon according to claim 1, wherein a functional material is contained in at least one of a polyethylene foam and a polyurethane foam.

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