JP2010252969A - Mat for sleeping bag - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a mat for sleeping bags which is washable as a whole by a washing machine in the mat for sleeping bags formed by covering a bed pad with a covering body. <P>SOLUTION: This mat 10 for sleeping bags is formed by covering the bed pad 40 with the covering body 12, wherein the bed pad 40 is formed by fixing a reinforcing sheet body 30 to the surface 24 and/or the back surface 26 of a plate-like elastic foam body 20, and a plurality of water through holes 22 penetrating in the thickness direction are distributedly disposed to the bed pad 40. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a bedding rug having moderate heat retention and cushioning properties, and more particularly, to a bedding rug that can be washed as a whole.

  As a bedding rug that lays on or under a rug such as a mattress or mattress and provides appropriate heat retention and cushioning, a laid pad made of a plate-like elastic foam is covered with a bag-like covering. Some have been covered (see, for example, Patent Document 1).

JP 2004-97724 A

  Bedding rugs are soiled by the user's sweat, body odor, sebum, dirt, etc., but because they cannot be washed as a whole for the reasons explained below, they are usually used as they are soiled. Recently, however, consumers have become more conscious of cleanliness, and there is a need for bedding rugs that can be washed entirely in a home washing machine.

  The laying pad, that is, the elastic foam loaded in the bedding rug is a sponge-like material in which countless minute bubbles are dispersed in a resin material. When the elastic foam is washed, moisture is trapped by air bubbles existing on or inside the elastic foam, which causes a problem that it is difficult to dry. Moreover, since the elastic foam has a plate shape, there is a problem that sufficient washing, rinsing, and dehydration are not performed because water is poorly distributed (circulated).

  Furthermore, the bedding rug often has an integrated structure by sewing a lay pad, that is, an elastic foam, to the covering. In such a configuration, the porous strength of the elastic foam essentially acts as an inherent defect, and the mechanical strength is reduced due to the fact that the perforation formed by sewing becomes an external defect. Let For this reason, there is a problem in that the elastic foam will be broken by compressive force, tensile force and shearing force in various directions acting on the elastic foam during washing, dehydration and drying.

  Therefore, a technical problem to be solved by the present invention is to provide a bedding rug in which a lay pad is covered with a covering, and the bedding rug can be washed entirely by a washing machine.

  In order to solve the above technical problem, according to the present invention, the following bedclothes are provided.

That is, the bedding rug according to claim 1 of the present invention is:
It is a bedding rug with a covering pad covered with a covering,
The spread pad is obtained by fixing a reinforcing sheet body to the front and / or back surface of a plate-like elastic foam,
A plurality of water passage holes penetrating in the thickness direction are dispersedly arranged with respect to the laying pad.

  In the bedding rug according to claim 2 of the present invention, the total opening area of all the opening areas of the water passage holes is 1 to 7% with respect to the surface area of one side of the elastic foam. To do.

  In the bedding rug according to claim 3 of the present invention, the total opening area obtained by adding all the opening areas of the water passage holes is 2 to 5% with respect to the surface area of one side of the bedding rug. To do.

  The bedding rug according to claim 4 of the present invention is characterized in that the surface and / or the back surface of the plate-like elastic foam has a skin.

  In the bedding rug according to claim 5 of the present invention, the reinforcing sheet body is selected from the group including a woven fabric, a knitted fabric, a film, a non-woven fabric, or paper.

  The bedding rug according to claim 6 of the present invention is characterized in that the elastic foam is made of polyethylene resin.

  The bedding rug according to claim 7 of the present invention is characterized in that the elastic foam is of a radiation cross-linking type.

  The bedding rug according to claim 8 of the present invention is characterized in that the elastic foam is composed of closed cells.

  The bedding rug according to claim 9 of the present invention is characterized in that the elastic foam and the reinforcing sheet body are fixed by heat sealing.

  In the present invention according to claim 1, since the laying pad has a configuration in which the reinforcing sheet body is fixed to the elastic foam, the mechanical strength of the elastic foam is greatly improved, and the elasticity at the time of washing and dehydration is improved. The foam is prevented from being broken, and the water is distributed (distributed) through a plurality of water holes dispersedly arranged with respect to the pad, so that sufficient washing, rinsing and dehydration are performed. Therefore, this invention which concerns on Claim 1 has the special effect that the bedclothes can be washed in the washing machine whole by providing favorable mechanical strength and water permeability.

  The reason why the elastic foam is used is to obtain an appropriate heat retaining property. However, when the proportion of the water passage holes in the elastic foam increases, the heat retaining property of the elastic foam decreases although the water passage becomes easier. Moreover, when the occupation ratio of the water passage holes in the elastic foam is too small, a decrease in heat retention is suppressed, but a very large water passage effect cannot be obtained. Therefore, the present invention according to claim 2 has the effect of satisfying both heat retention and water permeability.

  The present invention according to claim 3 has more preferable effects on heat retention and water permeability.

  The surface of the elastic foam generally exhibits a porous surface by slicing or the like, but the surface of the elastic foam as manufactured is composed of a skin surface with almost no bubbles. Since this skin surface is in the state of a dense solid approximated with bubbles collapsed, it has a higher mechanical strength than the porous surface. Therefore, the present invention according to claim 4 has the effect of improving the overall mechanical strength of the elastic foam.

  The present invention according to claim 5 has an effect that the pad is reinforced without increasing the total thickness of the pad.

  Polyurethane resin foams and rubber foams can also be used, but the former has the disadvantage that the weather resistance and water resistance are inferior to those of the polyethylene resin, and the latter has the disadvantage that the rubber has a peculiar odor. Therefore, the present invention according to claim 6 has the effect that the weather resistance and water resistance are excellent, and no off-flavor is generated.

  In general, an elastic foam of polyethylene resin is a sheet in which a thermal decomposition type foaming agent, an organic peroxide (crosslinking agent) or an auxiliary agent is kneaded into a polyethylene resin, and the foaming agent and the crosslinking agent are added in a heating furnace. Chemical cross-linking method that causes thermal crosslinking to cause resin cross-linking reaction and foaming agent decomposing reaction, and a sheet in which an organic foaming agent or auxiliary agent is kneaded into polyethylene resin is cross-linked by radiation (electron beam) irradiation. It is produced by an electron beam cross-linking method that causes The chemical cross-linking type produces a slight odor and gives the user discomfort, whereas the radiation (electron beam) cross-linking type generates almost no odor, so the radiation (electron beam) cross-linking The type is preferred. The radiation (electron beam) cross-linking type is suitable for mass production of thin sheet products having a thickness of about 10 mm. Therefore, the present invention according to claim 7 has the effect of providing a low-cost elastic foam that does not smell.

  In the case where the elastic foam is continuous foaming, since the bubbles present inside the elastic foam contain moisture, there is a disadvantage that moisture is difficult to escape and a long drying time is required. On the other hand, when the elastic foam is independent foam, the air bubbles present inside the elastic foam do not contain moisture, so that drying is easy. In addition, heat retention is excellent. Therefore, the present invention according to claim 8 has an effect that drying is easy and heat retention is excellent.

  Various methods such as fixing via an adhesive or a molten resin or heat sealing (frame laminating) can be used as a method for fixing the elastic foam and the reinforcing sheet, but for fixing using an adhesive. While the organic solvent contained in the adhesive has an odor that causes discomfort to the user, this is the case in the case of fixing via a molten resin or thermal fusion (frame lamination). There is no problem. Therefore, the present invention according to claim 8 has the effect of providing a laminate of elastic foam that does not smell.

It is the perspective view which notched a part of bedding for bedding based on this invention. It is a fragmentary sectional view of the bedding rug according to the present invention.

  Hereinafter, a bedding rug 10 according to an embodiment of the present invention will be described in detail with reference to FIGS.

  As shown in FIG. 1, a bedding rug 10 is a rug such as a mat or a pad in which a laid pad 40 is loaded (accommodated) in a bag-shaped covering 12. Alternatively, the bedding rug 10 has a configuration in which the outer periphery is hemmed and subjected to hem processing after being subjected to quilting or press-bonding in a state where the upper fabric 14, the pad 40 and the lower fabric 16 are laminated. It can also be. The bedcloth 10 is considered to be used on a rug such as a mattress or mattress so as to come into direct contact with the user's skin. Also good.

  Further, it is preferable to fix the laying pad 40 to the covering 12, but the pad 40 can be freely inserted into and removed from the bag-like covering 12 through an opening having an opening / closing engaging means such as a fastener or a hook. It is also possible to wash the laying pad 40 and the bag-shaped covering body 12 separately. However, when the laying pad 40 is free with respect to the covering 12, there is a possibility that the laying pad 40 may be misaligned during use and the sleeping comfort may be impaired. Therefore, it is preferable that the bedding rug 10 has an integral fixing structure in which the laying pad 40 is integrally fixed to the covering body 12. As a method for fixing the laying pad 40 to the covering 12, methods such as sewing, heat fusion, and adhesion can be used. As the fixing method, sewing and heat fusion that do not generate odor are particularly suitable.

  The covering 12 is composed of an upper fabric 14 and a lower fabric 16, and the upper fabric 14 and the lower fabric 16 are made of a fabric that hardly shrinks by washing, has low water absorption, and dries quickly, for example, a polyester fiber fabric. Used.

  The laying pad 40 according to the present invention has the reinforcing sheet 30 on the front surface 24 and / or the back surface 26 of the plate-like elastic foam 20, that is, on at least one surface of the plate-like elastic foam 20. It is fixed. The laying pad 40 is, for example, a single piece of 1000 mm × 2000 mm square or three pieces of 1000 mm × 660 mm square arranged in parallel. The elastic foam 20 provides excellent heat retention and elasticity (sleeping comfort), but is not so high in mechanical strength because it is a sponge-like material in which countless minute bubbles are dispersed in the base material. And the reinforcement sheet body 30 reinforces the elastic foam 20 which is not so high in mechanical strength.

  As the plate-like elastic foam 20, a polyurethane resin foam or a rubber foam can be used, but an olefin-based foam, for example, a polyethylene resin foam is preferable. The polyurethane resin foam has the disadvantage that the weather resistance and water resistance are inferior to those of the polyethylene resin, and the rubber foam has the disadvantage that the rubber has a unique odor. Therefore, the elastic foam 20 made of polyethylene resin is excellent in weather resistance and water resistance, and does not generate a bad odor.

As an example of the elastic foam 20 of polyethylene resin, product number LS-3 manufactured by Inoac Corporation (apparent density is 0.035 g / cm ³ , 25% compression hardness is 0.04 MPa, thermal conductivity is 0.038 W / m · K.) can be used.

  The elastic foam 20 made of polyethylene resin is generally prepared by making a sheet in which a pyrolytic foaming agent, an organic peroxide (crosslinking agent), an auxiliary agent, and the like are kneaded into a polyethylene resin, and the foaming agent and the crosslinking agent in a heating furnace. A chemical cross-linking method that causes thermal decomposition of the resin to cause a resin cross-linking reaction and a foaming agent decomposing reaction, or a sheet in which an organic foaming agent or auxiliary agent is kneaded into a polyethylene resin, and is irradiated with radiation (electron beam) It is produced by an electron beam cross-linking method for performing cross-linking. The chemical cross-linking type has a slight odor due to organic peroxide (cross-linking agent), which causes discomfort to the user, whereas the radiation (electron beam) cross-linking type has almost no odor. do not do. Further, the radiation (electron beam) cross-linking type is suitable for mass production of a thin sheet-like long product having a thickness of about 10 mm, and the cost can be reduced. Therefore, as the low-cost elastic foam 20 that does not smell, a radiation (electron beam) cross-linking type is suitable.

  In the case where the elastic foam 20 is continuous foaming, the bubbles present inside the elastic foam 20 contain water due to washing, so that it is difficult for water to escape and a long drying time is required. Further, in the case of continuous foaming, the heat retention is inferior because the gas in the bubbles flows. On the other hand, when the elastic foam 20 is independent foam, the air bubbles present inside the elastic foam 20 do not contain moisture even after washing, so that drying is easy. Moreover, in the case of independent foaming, since the gas in the bubbles is sealed, the heat retaining property is excellent. Therefore, an independent foamed elastic foam 20 that is easy to dry and excellent in heat retention is used.

  The surface of the elastic foam 20 generally exhibits a porous surface by slicing or the like, but the surface of the elastic foam 20 as manufactured is composed of a skin surface with almost no bubbles. Since this skin surface is in a dense solid approximate state in which bubbles are crushed, it has higher mechanical strength than the porous surface. In order to improve the overall mechanical strength of the elastic foam 20, the front surface 24 and / or the back surface 26 of the plate-like elastic foam 20 preferably has a skin.

  The thickness of the plate-like elastic foam 20 is 2 mm to 40 mm, particularly preferably 5 mm to 30 mm. When the thickness of the elastic foam 20 is smaller than the above numerical value, it does not function effectively as a laying pad 40 for providing heat retention and elasticity, and when the thickness of the elastic foam 20 is larger than the above numerical value, the bedding surface is high. Because it becomes too much.

  The reinforcing sheet body 30 is a reinforcing material that is fixed to the front surface 24 and / or the back surface 26 of the elastic foam body 20, and greatly improves the mechanical strength of the elastic foam body 20, so that the elastic foam body 20 is cleaned and dehydrated. This is to prevent breakage of the. The reinforcing sheet body 30 is selected from the group including a woven fabric, a knitted fabric, a film, a non-woven fabric, or paper. The woven fabric as the reinforcing sheet body 30 can be, for example, plain weave, oblique weave or satin weave composed of synthetic fibers such as polypropylene, polyester, acrylic, rayon or nylon, or natural fibers such as wool or cotton. It is. As the knitted fabric as the reinforcing sheet body 30, for example, Melias knitting, garter knitting or kokoko knitting composed of synthetic fibers such as polypropylene, polyester, acrylic, rayon and nylon, natural fibers such as wool and cotton can be used. It is. For example, various resin films such as polyester, vinyl chloride, polypropylene, polyamide, or polyethylene can be used as the film as the reinforcing sheet body 30. Nonwoven fabrics as the reinforcing sheet body 30 include, for example, melt blown nonwoven fabrics, spunbond nonwoven fabrics, span needle nonwoven fabrics, and the like composed of synthetic fibers such as polypropylene, polyester, acrylic, rayon, and nylon, and natural fibers such as wool and cotton. It can be used. Although various types of paper such as western paper and Japanese paper can be used as the reinforcing sheet body 30, for example, printing paper using bleached chemical pulp is suitable. The thickness of the reinforcing sheet body 30 varies depending on the mechanical strength of the material used, but is 0.05 mm to 0.5 mm, and particularly preferably 0.1 mm to 0.3 mm. When the thickness of the reinforcing sheet body 30 is smaller than the above numerical value, it does not function effectively as the reinforcing sheet body 30 for providing heat retaining properties, and when the thickness of the reinforcing sheet body 30 is larger than the above numerical value, the self-shape retaining property is large. Because it hinders laundry.

  As the fixing of the elastic foam body 20 and the reinforcing sheet body 30, various modes such as fixing via an adhesive or a molten resin and heat sealing (frame laminating) can be used, but for fixing using an adhesive. However, the organic solvent contained in the adhesive generates odors and is uncomfortable for the user. On the other hand, there is no such problem in the case of fixing via a molten resin or thermal fusion (frame lamination). Therefore, for fixing the odorless elastic foam 20 and the reinforcing sheet 30, fixing via a molten resin or heat sealing (frame lamination) is preferably used.

  A plurality of water passage holes 22 penetrating in the thickness direction are dispersedly arranged with respect to the pad 40 to which the elastic foam body 20 and the reinforcing sheet body 30 are integrally fixed. The water passage hole 22 is formed by punching (drilling process), needle hole process, leather process or the like. The water passage hole 22 can have various shapes such as a round shape, a square shape, a triangular shape, a polygonal shape, and a star shape. The water passage holes 22 can be arranged regularly or irregularly with respect to the longitudinal direction and the longitudinal orthogonal direction. The water passage hole 22 is basically a hole for allowing water to be distributed (distributed) during washing, but when used as a rug, it functions as a vent hole.

  As the water flow holes 22, for example, round holes with a diameter of 3 mm are formed at a pitch of 15 mm. In this case, the total opening area obtained by adding all the opening areas of the water passage holes 22 is approximately 5% with respect to the surface area of one side of the elastic foam 20. That is, the occupation ratio of the water passage holes 22 is approximately 5%. The occupation ratio of the water passage holes 22 is 1 to 7%, particularly preferably 2 to 5%. When the occupation ratio of the water passage holes 22 is smaller than the above numerical value, it does not function effectively as the water passage holes 22 that allow water to pass during washing, and when the occupation ratio of the water passage holes 22 is larger than the above numerical values, the heat retention is lowered. Because it invites. The size of the water passage hole 22 is 1 to 10 mm, particularly preferably 2 to 7 mm. If the size of the water passage hole 22 is smaller than the above numerical value, it will not function effectively as the water passage hole 22 that allows water to pass during washing, and if the size of the water passage hole 22 is larger than the above numerical value, it will cause a decrease in heat retention. It is.

  Since the water is distributed (distributed) through the plurality of water holes 22 distributed with respect to the floor pad 40, sufficient washing, rinsing and dehydration are performed during washing. Therefore, the bedding rug 10 in which the bedding pad 40 is loaded on the covering 12 is provided with good mechanical strength and water permeability, so that the bedding rug 10 can be entirely washed with a washing machine.

  In addition, between the elastic foam 20 and the lower fabric 16, a moisture absorption / odor absorption sheet such as Bincho charcoal having a moisture absorption effect and an odor absorption effect, a negative ion generation sheet such as tourmaline, or a germanium having a thermal effect by far infrared rays. It can also be set as the structure which laminated | stacked and intervened various functional sheets, such as a blood circulation promotion sheet | seat.

10 Bedding rug 12 Cover (cover)
14 Upper fabric 16 Lower fabric 20 Elastic foam 22 Water flow hole 24 Front surface 26 Back surface 30 Reinforcement sheet body 40 Padding pad

Claims (9)

It is a bedding rug with a covering pad covered with a covering,
The spread pad is obtained by fixing a reinforcing sheet body to the front and / or back surface of a plate-like elastic foam,
A bedding rug, wherein a plurality of water passage holes penetrating in the thickness direction are distributed with respect to the lay pad.   The bedding rug according to claim 1, wherein a total opening area of all the opening areas of the water passage holes is 1 to 7% with respect to a surface area of one surface of the elastic foam.   The bedding rug according to claim 1, wherein a total opening area of all the opening areas of the water passage holes is 2 to 5% with respect to a surface area of one side of the bedding rug.   The bedding rug according to claim 1, wherein the surface and / or the back surface of the plate-like elastic foam has a skin.   The bedding rug according to claim 1, wherein the reinforcing sheet body is selected from a group including a woven fabric, a knitted fabric, a film, a non-woven fabric, or paper.   The bedding rug according to claim 1, wherein the elastic foam is made of polyethylene resin.   The bedding rug according to claim 6, wherein the elastic foam is of a radiation cross-linking type.   The bedding rug according to claim 1, wherein the elastic foam is composed of closed cells.   The bedding rug according to claim 1, wherein the elastic foam body and the reinforcing sheet body are fixed by heat fusion.

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