Disaster Prevention Mattress

Abstract

To provide a disaster prevention mattress which can reduce a storage capacity in a shelter or the like, can facilitate a disposal work after the use, and can be used in a case other than a mattress.SOLUTION: A disaster prevention mattress is made of an elastic foamed body, has cut-off lines to cut a predetermined size of block piece from the mattress, and has cuts penetrating in a thickness direction at a predetermined interval along the cut-off lines. It is preferable that the cut-off lines are arranged in a grid shape on a surface vertical to the thickness direction of the mattress. It is preferable that an area of the minimal block piece to be cut off along the cut-off line on the surface vertical to the thickness direction is within the range from equal to or more than 150 cm2 to equal to or less than 250 cm2.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a mattress for disaster prevention. [Background technology]

[0002] In order to avoid natural disasters such as typhoons, earthquakes, and volcanic eruptions, or large-scale fires and explosions, residents may evacuate to the nearest evacuation shelter, such as a school gymnasium or a community center. These shelters are usually equipped with mattresses as part of disaster prevention equipment, in anticipation of the evacuees staying overnight.

[0003] However, storing mattresses requires a large amount of space, and currently most evacuation centers are not equipped with enough mattresses for the number of evacuees.

[0004] Therefore, various inflatable / deflable air mattresses have been proposed and are commercially available. Air mattresses can be stored in a deflated state to reduce storage volume, and when in use, they can be inflated with air to function as a mattress.

[0005] Patent Document 1 also discloses a technology in which a polyol component liquid and a polyisocyanate component liquid are mixed together at the time of use to generate a urethane foam resin for use as an emergency mattress. This technology is said to enable the mattress to be stored in a small volume when not in use.

[0006] Patent Document 2 also discloses a disaster prevention mat in which a plurality of mat pieces, each of which has a urethane foam core wrapped in a bag, are connected together. This disclosed technology is said to be capable of being folded and stored compactly in a limited storage volume. [Prior art documents] [Patent documents]

[0007] [Patent Document 1] JP 2019-37753 A [Patent Document 2] Utility Model Registration No. 3078319 Summary of the Invention [Problem to be solved by the invention]

[0008] By the way, used mattresses are usually disposed of as bulky waste after the evacuation situation is resolved. The number of discarded used mattresses increases in proportion to the number of evacuees. Conventional mattresses have been designed with consideration given to compactness when stored when not in use and convenience when used, but no attention has been paid to the ease of disposal after use. In addition, no consideration has been given to possible uses other than as mattresses.

[0009] The present invention has been made in consideration of these conventional problems, and its purpose is to provide a disaster prevention mattress that requires less storage space in evacuation shelters, is easy to dispose of after use, and can be used for purposes other than as a mattress. [Means for solving the problem]

[0010] One embodiment of the present invention which achieves the above-mentioned objective is a disaster prevention mattress (hereinafter referred to simply as "mattress") made of elastic foam, having cut-away lines which enable block pieces of a predetermined size to be cut out from the mattress, and which is characterized in that the cut-away lines have slits at predetermined intervals which penetrate through the thickness.

[0011] In a mattress of this configuration, when force is applied in a direction perpendicular to the extension direction of the cuttable line, i.e., in the direction of cutting open the cuttable line, the connections between the cuts are cut and the mattress can be divided into block pieces of the desired size.

[0012] In a disaster prevention mattress having the above-described configuration, it is preferable that the cut-off lines are arranged in a lattice pattern on a plane perpendicular to the thickness direction of the mattress.

[0013] In the disaster prevention mattress of the above configuration, the area of ​​the smallest block piece that can be cut along the cuttable line is 150 cm2 in a plane perpendicular to the thickness direction. 2 More than 250cm 2 The following ranges are preferred:

[0014] In addition, in a disaster prevention mattress having the above-described configuration, it is preferable that a plurality of convex portions and concave portions are formed alternately in two perpendicular directions in a plan view on one side and / or the other side of the thickness direction of the mattress.

[0015] In a disaster prevention mattress having the above-mentioned configuration, it is preferable that the ratio of the height of the convex portion to the thickness of the mattress is in the range of 15% to 40%.

[0016] In a disaster prevention mattress having the above-mentioned configuration, the length of the slit is preferably 2 mm or more.

[0017] In the disaster prevention mattress having the above-mentioned configuration, it is preferable that the length of the connection between adjacent slits is in the range of 1 mm or more and 8 mm or less.

[0018] In the disaster prevention mattress having the above configuration, the density of the foam is 25 kg / m 3 More preferably, it is equal to or greater than this.

[0019] In the disaster prevention mattress having the above-mentioned configuration, the foam is preferably a polyurethane foam, and more preferably the polyurethane foam has hydrophilic properties. Effect of the Invention

[0020] Since the disaster prevention mattress of the present invention is made of elastic foam, the volume of the mattress can be compressed by, for example, storing it in an airtight bag and then reducing the pressure inside the bag, making it possible to reduce the storage volume of the mattress in evacuation shelters, etc.

[0021] In addition, the disaster prevention mattress of the present invention can be divided into blocks of a desired size by the worker's fingers without using a cutting tool such as a cutter. This makes it easy to shape the mattress according to the height and physique of the user when used as a normal mattress, or to shape the mattress according to the shape of the place where it is laid in an evacuation shelter. The mattress can also be divided into blocks of a desired size. The divided blocks can be used, for example, as materials for cleaning furniture and windows that have been damaged by disasters, or as materials for absorbing leaked oil, water, solvents, etc.

[0022] Furthermore, the disaster prevention mattress of the present invention can be divided and disassembled into a number of block pieces, making it easy to dispose of after use. [Brief description of the drawings]

[0023] [Figure 1] 1 is a perspective view showing one embodiment of a mattress according to the present invention, viewed from below. [Diagram 2] 2 is a partial perspective view of the mattress shown in FIG. 1, seen from above. [Diagram 3] 2 is a partial vertical cross-sectional view of the mattress shown in FIG. 1. [Figure 4] FIG. 2 is a partial enlarged view of a possible cut-off line L. [Diagram 5] FIG. 2 is a perspective view showing an example of storage of the mattress according to the present invention. [Figure 6] FIG. 11 is a perspective view showing another example of use of the mattress according to the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0024] Hereinafter, a mattress according to one embodiment of the present invention will be described with reference to the drawings, but the present invention is not limited to these embodiments. In addition, the terms "thickness direction", "X direction", and "Y direction" in this specification refer to the thickness direction, X direction, and Y direction shown in the drawings.

[0025] (mattress) Fig. 1 shows an embodiment of a mattress M according to the present invention, in a perspective view seen from the bottom in the thickness direction, Fig. 2 shows a partial perspective view seen from the top in the thickness direction, and Fig. 3 shows a partial vertical cross-sectional view. The mattress M shown in these figures is rectangular in plan view and is made of an elastic foam. One surface in the thickness direction (the upper surface in Fig. 1) is profiled so that multiple convex portions 11 and concave portions 12 alternate in two orthogonal directions in plan view. This profile processing improves body pressure dispersion and breathability when used as a mattress.

[0026] There is no particular limitation on the thickness D (shown in FIG. 3) of the mattress M, but it is usually preferably in the range of 40 mm to 80 mm, and more preferably in the range of 50 mm to 70 mm. In addition, from the viewpoint of improving the body pressure dispersion and breathability, it is possible to increase the height of the protrusions 11, but as the height of the protrusions 11 increases, durability decreases. For this reason, it is usually recommended that the height h (shown in FIG. 3) of the protrusions 11 be in the range of 15% to 40% of the thickness D (shown in FIG. 3) of the mattress M. The profile processing may be performed not only on one side of the mattress M in the thickness direction but also on the other side, or both sides of the mattress M in the thickness direction may be flat without the profile processing, but it is preferable that at least one side is profiled, and when used as a mattress, the mattress M is preferably arranged so that the side with the profile processing is on the upper side.

[0027] As the foam constituting the mattress M, for example, elastic resin foams such as polyurethane foam, polyethylene foam, and polypropylene foam can be suitably used. Among these, polyurethane foams with low resilience modulus and high body pressure dispersion are suitably used. In addition, from the viewpoint of exerting the functions of breathability and water permeability, polyurethane foams with a three-dimensional network structure without a cell membrane are recommended. Also, the foam may be imparted with antistatic (static electricity), antibacterial, and antifungal properties by including conductive powder such as carbon, antibacterial agents, and antifungal agents in the foam. Also, as described later, the mattress M is divided along the cuttable lines into block pieces, and the block pieces are used as members for cleaning windows, etc., or as members for absorbing leaking water, accumulating water, etc., so that the foam is preferably hydrophilic. To impart hydrophilicity to the foam, for example, when the foam is polyurethane foam, a raw material in which polyethylene glycol is introduced into the urethane skeleton may be used, or a polyol in which a water-soluble polymer is dispersed may be used as the raw material, or a hydrophilic polymer may be mixed into the raw material.

[0028] The density of the foam that constitutes the mattress M is 14 kg / m 3 The density of the foam is preferably 14 kg / m or more. 3 If the density is less than 25 kg / m, sufficient cushioning properties may not be obtained. 3 The density of the foam is 25kg / m 3 If the density is less than 30 kg / m, when the mattress M is compressed to save space during storage or transportation, it may not be possible to fully restore the mattress from the compressed state when it is used. Also, when the mattress M is folded, it may break at the tearable line. A more preferable lower limit of the density of the foam is 30 kg / m 3 On the other hand, there is no particular upper limit to the density of the foam, but it is usually 50 kg / m 3 It is.

[0029] (Cuttable line) As shown in FIG. 1, the mattress M has a plurality of cuttable lines L arranged in a grid pattern at predetermined intervals in the X and Y directions to enable the mattress M to be cut into a predetermined size. The cuttable lines L have slits Br (shown in FIG. 4) that penetrate in the thickness direction and are formed at predetermined intervals in the line direction. By providing the cuttable lines L in this way on the mattress M, the worker can cut the mattress M into a desired size using the cuttable lines L with his or her fingers without using a cutting tool such as a cutter. In the mattress M shown in this embodiment, an outer peripheral frame portion 10 (shown in FIG. 1) is provided on the periphery of the mattress M in the XY plane, on which the cuttable lines L are not formed. This is to prevent the mattress M from being torn at the cuttable lines L during transportation or storage, and the mattress M may not be provided with the outer peripheral frame portion 10.

[0030] The number of possible cut lines L may be one or more than two. When the number of possible cut lines L is two or more, there is no particular limitation on the formation intervals P1, P2 (shown in FIG. 1) between the lines, and the formation intervals may be appropriately determined based on the intended use of the block pieces cut from the mattress M. For example, when the block pieces cut from the mattress M are used as materials for cleaning damaged furniture, windows, etc., the formation intervals P1, P2 are preferably in the range of 100 mm to 200 mm, and the planar shape of the block pieces is preferably rectangular, so that the block pieces can be easily held by one hand. The possible cut lines L are not limited to straight lines, and may be bent lines or curved lines.

[0031] FIG. 4 shows a partial enlarged view of the possible cut line L. As shown in FIG. 4, the possible cut line L has a plurality of slits Br with a length Lb in the line direction at a predetermined interval (connection part Co: length Lc). The slits Br penetrate the mattress M in the thickness direction. The length Lb of the slits Br constituting the possible cut line L is usually preferably 2 mm or more, more preferably 10 mm or more. There is no particular limit to the upper limit, but it is about 50 mm. If the length Lb of the slit Br is less than 2 mm, it becomes difficult to cut the mattress M. If the length Lb of the slit Br is 2 mm or more, the mattress M can be divided by pulling the left and right sides up and down around the possible cut line L. If the length Lb of the slit Br is 10 mm or more, when an operator cuts the mattress M, the operator can easily insert his or her fingers into the slit Br and start cutting smoothly. In addition, the mattress M is less likely to break off from the possible cut line L. On the other hand, if the length Lb of the slit Br exceeds 50 mm, although it becomes easier for an operator to insert his / her fingers, there is a risk of unintentional separation during transportation, storage, etc.

[0032] The length Lc of the connection portion Co between adjacent slits Br, which together with the slits Br constitutes the cuttable line L, is preferably in the range of 1 mm or more and 8 mm or less. If the length Lc of the connection portion Co is less than 1 mm, there is a risk of unintended separation during transportation, storage, etc. On the other hand, if the length Lc of the connection portion Co exceeds 8 mm, there is a risk of the quality of the cut surface of the mattress M becoming dirty, and there is also a risk of cutting waste being generated. The length Lc of the connection portion Co is more preferably in the range of 1 mm or more and 6 mm or less, and even more preferably in the range of 1 mm or more and 4 mm or less. It is particularly preferably in the range of 1 mm or more and 3 mm or less.

[0033] Although there is no particular limitation on the ratio between the length Lb of the cut line Br constituting the cuttable line L and the length Lc of the connection portion Co, it is usually preferable that the length Lb of the cut line Br is longer than the length Lc of the connection portion Co.

[0034] It should be noted that the connection portion Co only needs to connect the cuts Br in at least a portion of the thickness direction, and for example, a cut of a predetermined depth in the thickness direction of the mattress M may be provided in the connection portion Co. By forming such a cut, it becomes easier to cut the mattress M at the possible cut line L, and cutting of the mattress M away from the possible cut line L is suppressed.

[0035] FIG. 5 shows an example of how the mattress of the present invention is stored. An airtight rectangular parallelepiped storage bag 2 having a gusset thicker than the thickness of the mattress is prepared. The storage bag 2 has an opening 20 equipped with an opening / closing zipper 21 on one side in the longitudinal direction (Y direction), and has an intake valve 22 with a check function on one side in the thickness direction. The mattress M is stored in the storage bag 2 through the opening 20 of the storage bag 2. The opening 20 is then closed by the opening / closing zipper 21, and the suction port of a vacuum cleaner, for example, is brought into contact with the intake valve 22, and the air in the storage bag 2 is sucked out by the vacuum cleaner. This creates a low pressure inside the storage bag 2, and the mattress M made of an elastic foam is compressed to about 1 / 3 of its normal size, making it possible to reduce the storage volume of the mattress M in an evacuation shelter or the like.

[0036] On the other hand, when the mattress M is to be used, the opening / closing zipper 21 of the opening 20 of the storage bag 2 is opened from the closed state. This allows outside air to flow into the storage bag 2, and the mattress M, which has been compressed and stored, returns to its normal thickness. The restoring force of the mattress M from its compressed state is affected by the density of the foam constituting the mattress M. For this reason, as mentioned above, the density of the foam is 25 kg / m 3 It is preferable that the density is 30 kg / m or more. 3 The above is more preferable. In addition, by providing the slits Br in the mattress M, external air flows into the mattress M through the slits when the mattress M is restored from the compressed state, making the mattress easier to restore.

[0037] The mattress M compressed in the storage bag 2 may be stored in a flat state by stacking them, or may be stored in a rolled state. As shown in FIG. 6, the rolled mattress M may be stored in a cylindrical case 3. One axial end face of the case 3 is sealed and the other end face forms an opening 30, and a lid member 31 is attached to the opening 30 so as to be openable and closable by a line fastener 32. The case 3 is made of a flexible resin sheet material. Note that the member for attaching the lid member 31 to the opening 30 so as to be openable and closable is not limited to the line fastener 32, and any conventionally known fastener such as a hook and loop fastener or a point fastener may be used.

[0038] In this way, by storing the rolled mattress M in the cylindrical case 3 and using it as a pole, the mattress that was previously simply stored and not used during normal times can now be used as a stretching pole or standing bag during normal times. Also, if the case 3 is shaped like a rectangular parallelepiped, it can also be used as a tackle mitt or kick mitt.

[0039] 6, the mattress M compressed by the storage bag 2 is stored in the case 3, but it is of course possible to store the mattress M in the case 3 without compressing it. Also, the case 3 may be made airtight, and the mattress M may be stored in the case 3, and then the pressure inside the case 3 may be reduced to compress the mattress M. EXAMPLES

[0040] (Example 1 to Example 7) X direction: 150mm, Y direction: 200mm, thickness: 60mm, density: 25kg / m 3 Mattresses of Examples 1 to 7 were produced by forming cuttable lines parallel to the X or Y directions at intervals of 50 mm in the X direction and at intervals of 75 mm in the Y direction on polyurethane foam with a profile (20 mm convex portion) on one side. The lengths of the breaks Br and the connections Co of the cuttable lines are as shown in Table 1. The produced mattresses were then subjected to evaluation tests for the following items. The evaluation results are shown in Table 1.

[0041] (Example 8 to Example 14) Mattresses were produced and evaluation tests were carried out in the same manner as in Examples 1 to 7, except that the height of the profiled convex portion 11 was set to 10 mm. The evaluation results are shown in Table 1.

[0042] (Ease of starting cutting) The ease of starting to cut the mattress was evaluated by inserting fingers into the slit and pushing the slit apart, according to the following criteria. ◎: The first connection can be easily cut with a finger inserted into the cut. ○: The first connection can be cut with the finger inserted into the cut, but some force is required. △: When inserting the finger into the slit to cut the first connection part, force is required and it is difficult to cut.

[0043] (Ease of cutting) The ease with which the slits in the mattress could be pushed apart and expanded was evaluated according to the following criteria. ◎: The crack can be easily widened and progressed. ○: Some force is required to widen the notch, but the notch can be expanded. △: Force is required to widen the cut, and the cut does not progress easily.

[0044] (Cuts occur in areas other than the connection) When the cut was allowed to progress, the presence or absence of cuts in areas other than the connection was evaluated according to the following criteria. ⊚: The connection was easy to cut, and the cut could be easily made in a straight line along the cut. ○: It takes some force to cut the connection, and care must be taken to cut in a straight line along the cut. △: It takes force to cut the connection, and care must be taken to cut in a straight line along the cut.

[0045] (Quality of cutting surface and chips) After cutting the mattress along the cut-out line, the condition of the cut surface and the presence or absence of cutting debris were evaluated according to the following criteria. ◎: Smooth and no chips are generated. ○: There are small irregularities, but no chips are generated. Δ: The unevenness is noticeable, it is somewhat dirty, and there is a risk of cutting chips being generated.

[0046] (Compression packaging evaluation) Density 25kg / m 3 A mattress of Example 3 and a mattress of Example 3 having the same structure but with a density of 14 kg / m 3 A load was applied to the mattress so that the thickness became 6 mm, and the thickness recovery rate was measured when the mattress was released after a certain period of time. The measurement results are shown in Table 2. ◎: Recovery rate 91-100% ○: Recovery rate 81-90% △: Recovery rate 50~80%

[0047] [Table 1]

[0048] [Table 2]

[0049] As is clear from Table 1, the mattresses of Examples 1 and 8, in which the heights of the profiled convex portions were 20 mm and 10 mm, the cut-out line breaks were 2 mm, and the connection portions were 2 mm, were excellent in all cutting evaluations except for "ease of starting to cut."

[0050] For mattresses with a 20mm height of the profiled convex portion, the mattresses of Examples 2 and 3, in which the cut-out line slit is 12mm and the connection is 1mm and 2mm, were superior in both cut-out evaluations. Also, for mattresses with a 10mm height of the profiled convex portion, the mattress of Example 9, in which the cut-out line slit is 12mm and the connection is 1mm, was superior in both cut-out evaluations.

[0051] In addition, for the mattress with a profiled convex part height of 20 mm, the cut-out line was 12 mm, and in the mattresses of Examples 4 to 6 in which the connection parts were lengthened to 3 mm, 4 mm, and 6 mm, the evaluation items of "ease of starting to cut," "ease of cutting," and "characteristics of the cut surface / cutting chips" tended to decrease as the connection parts became longer.

[0052] For the mattress with a 10 mm high convex portion of the profile processing, the cut-out line was 12 mm, and for the mattresses of Examples 10 to 13 in which the connection parts were lengthened to 2 mm, 3 mm, 4 mm, and 6 mm, the evaluation items of "ease of starting to cut," "ease of cutting," and "characteristics of the cut surface / cutting chips" tended to decrease as the connection parts became longer.

[0053] In the mattresses of Examples 7 and 14, which have the same ratio of length between the cut and the connection as the mattresses of Examples 6 and 13, but in which the cut at the cut-out line is 16 mm longer and the connection is 8 mm longer than the mattresses of Examples 6 and 13, the "ease of starting to cut" was reduced compared to the mattresses of Examples 6 and 13, but the other evaluation items were the same.

[0054] As can be seen from Table 2, the recovery rate of the mattress was better for mattresses with higher density. [Industrial Applicability]

[0055] The disaster prevention mattress of the present invention makes it possible to reduce the storage volume in evacuation shelters, etc. In addition, workers can divide the mattress into blocks of the desired size by hand without using a cutting tool such as a cutter, and the mattress can be used as a material for cleaning damaged furniture and windows, or as a material for absorbing leaked oil, water, solvents, etc. Furthermore, the mattress can be divided and disassembled into multiple blocks after use, making disposal easier. [Explanation of symbols]

[0056] 2 Storage bag 3 Cases D Mattress thickness h Height of the protrusion L Cuttable line M Mattress 10 Outer frame 11 Convex 12 Recess 20 Opening 21 Opening and closing zipper 22 Intake valve 30 aperture 31 Lid member 32 Wire fastener Br Break Co Connection Lb Length of the cut Lc Length of the connection

Claims

1. A mattress for disaster prevention, It is made of elastic foam, A cuttable line is provided for cutting a block piece of a predetermined size from the mattress, The cuttable line has cuts at predetermined intervals that penetrate the thickness direction. A disaster prevention mattress characterized by:

2. 2. A disaster prevention mattress according to claim 1, wherein the cuttable lines are arranged in a lattice pattern on a plane perpendicular to the thickness direction of the mattress.

3. The area of ​​the smallest block piece that can be cut along the cuttable line is 150 cm ２ More than 250cm ２ A disaster prevention mattress according to claim 1 or 2, which is within the following range.

4. A disaster prevention mattress as described in any one of claims 1 to 3, wherein a plurality of convex portions and concave portions are formed alternately on one side and / or the other side of the thickness direction of the mattress in two perpendicular directions when viewed in a plane.

5. 5. A disaster prevention mattress according to claim 4, wherein the ratio of the height of said convex portion to the thickness of said mattress is in the range of 15% to 40%.

6. A disaster prevention mattress according to any one of claims 1 to 5, wherein the length of the slit is 2 mm or more.

7. 7. A disaster prevention mattress according to any one of claims 1 to 6, wherein the length of the connection between adjacent slits is in the range of 1 mm or more and 8 mm or less.

8. The density of the foam is 25 kg / m ３ The disaster prevention mattress according to any one of claims 1 to 7.

9. 9. A disaster prevention mattress according to claim 1, wherein the foam is a polyurethane foam.

10. 10. The disaster prevention mattress according to claim 9, wherein the polyurethane foam has hydrophilic properties.

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