A cushioning material or laminate having a substantially rectangular cut surface, a method for using the cushioning material or laminate which has excellent self-supporting assembly properties by forming the profiled surface into a predetermined shape, and a method for coloring the fusion layer of the cushioning material or laminate.

Abstract

To provide a cushioning material or laminate having excellent designability and having a cut surface of a profiled surface cut into a substantially rectangular shape, a method for using the cushioning material or laminate having excellent assembly workability when used upright, and a method for coloring the fusion layer of the cushioning material or laminate. [SOLUTION] Peaks 5 and valleys 7 are formed on one surface of the cushioning material 1. The peaks 5 and valleys 7 are periodically arranged alternately vertically and horizontally. The other surface of the cushioning material 1 is flat and does not have the peaks 5 and valleys 7. The cushioning material 1 comprises resin foams 15a, 15b and an adhesive layer 17 formed on the laminated surfaces of the resin foams 15a, 15b. The adhesive layer 17, which is formed approximately parallel to the back surface 9, is exposed at a predetermined height on the surface 3 of the wavy uneven structure. The adhesive layer 17 forms a large number of linear patterns 11 in plan view. The cushioning material 1 is cut at predetermined positions to obtain an approximately rectangular cut surface.

Description

[Technical field]

[0001] The present invention relates to a cushioning material or laminate having a substantially rectangular cut surface that can be easily assembled without using assembly tools or assembly parts, a method for using the cushioning material or laminate that has excellent self-supporting ability due to the profiled surface being shaped in a predetermined shape, and a method for coloring the fusion layer of the cushioning material or laminate. By law This is a related invention. [Background technology]

[0002] Conventionally, cushioning materials using resin foam have been used for packaging materials, mats, etc. For example, cushioning materials using such resin foam have an uneven surface with peaks and valleys.

[0003] Examples of such cushioning materials include thermoplastic resin foam sheets having an uneven surface with a skin, which are widely used as materials for various industrial products such as shock-absorbing materials, building materials, heat insulating materials, and sound-absorbing materials, as well as materials for various household products such as daily necessities and sports and leisure goods, and sporting goods (Patent Document 1).

[0004] The method for producing a thermoplastic resin foam sheet in Patent Document 1 involves first cutting a strip-shaped thermoplastic resin foam sheet having a uniform thickness in an uneven manner in the vertical middle to divide it into upper and lower two layers, or alternatively maintaining a strip-shaped thermoplastic resin foam sheet having a uniform thickness in an uneven manner and cutting the vertical middle horizontally to divide it into upper and lower two layers. This results in two foam sheets having an uneven surface on one side. Next, thermal energy is radiated to the uneven surface of the foam sheet to melt and cool the surface. As a result, a thermoplastic resin foam sheet having an uneven surface with a skin is formed.

[0005] In addition, a soundproof floor structure has been proposed in which hard boards are laminated onto a plastic foam, which can be suitably used as a flooring material for various types of housing, warehouses, etc., particularly for collective housing such as condominiums (Patent Document 2).

[0006] Normally, when a relatively hard material is used as a finishing material for a floor base such as a concrete slab, noise from daily life is transmitted to the floor below as solid-state sound, causing environmental problems. To address this issue, various underlayment materials such as polyurethane foam, synthetic fiber nonwoven fabric, and polyethylene foam have been developed and used as soundproofing materials.

[0007] In contrast, Patent Document 2 discloses a soundproof floor structure using a floor underlayment in which a hard board is laminated on a floor underlayment made of a foam having valleys and / or peaks on the surface. 2 , apparent density 0.05~0.12g / cm 3 This floor underlayment uses a hard board laminated to a plastic foam having a hardness of 5 to 35, and is not intended to impart design features as in the present application, nor does it use only foamed resin for the cushioning material or laminate as in the present application.

[0008] Furthermore, cushioning materials such as mattresses and pillows are widely used in the field of medical materials and the like, and a laminated foam having excellent body pressure dispersion properties and a method for producing the same have been proposed (Patent Document 3).

[0009] In Patent Document 3, sufficient performance is ensured by integrating a high-resilience foam having a peak-valley surface and a low-resilience foam made of polyurethane foam with a rebound elasticity of 10% or less, which is closely bonded to the peak-valley surface of the high-resilience foam, into the high-resilience foam by insert molding. Patent Document 3 aims to use a combination of the peak-valley surfaces of the low-resilience foam and the high-resilience foam, and to disperse stress by supporting the stress of the low-resilience foam on the upper surface with the peak-valley surface of the high-resilience foam. The soundproof floor structure in Patent Document 3 is not intended to improve design by using a linear pattern on the design surface.

[0010] Patent Document 4 proposes an invention relating to a manufacturing method for cushioning material in which a number of wavy concave-convex structures are periodically formed by island-shaped profiling and a hard foam material is placed on the convex portions (Patent Document 4).

[0011] In Patent Document 4, in order to stabilize the hardness of the convex parts of the profiled, wavy uneven structure, a three-layer foamed resin laminate is prepared in which harder soft foam or semi-rigid foam is bonded above and below a soft foam, and then profiled to straddle the harder soft foam or semi-rigid foam above and below. However, the manufacturing method of Patent Document 4 does not expose the fusion layer or adhesive layer to the surface of the wavy uneven structure to form a large number of circular linear patterns.

[0012] Furthermore, Patent Document 5 describes a foam mat in which a continuous wavy uneven structure is formed on the surface in the width direction by profiling, and a predetermined foam is placed at a predetermined position of the wavy uneven structure to improve the design (Patent Document 5). Patent Document 6 discloses a cardboard bed that can be assembled by assembling nearly 20 parts, and the length of the bed is extendable and contractible without using fasteners such as tape. (Patent Document 6) Patent Document 7 discloses a cardboard bed consisting of a base formed by assembling 10 or more pieces of cardboard and a top plate. (Patent Document 7)

[0013] Patent Document 8 discloses an invention for constructing evacuation shelter compartments using cardboard partitions. In this invention, an assembleable evacuation shelter compartment can be obtained by using cardboard connecting members at the straight and curved parts of the upper and lower parts to connect adjacent partitions. (Patent Document 8) Patent Document 9 discloses a partition structure for use in evacuation shelters, which is characterized by repeatedly folding a corrugated board material, which has creases of a constant width along the length of the cardboard, into a wavy shape along the creases to ensure that the partition units can be erected upright, and then joining the units together with adhesive tape (Patent Document 9).

[0014] Patent Document 10 discloses a partition material that can be used in evacuation shelters during disasters, that can be bent at a specified angle using a foamed resin with a specified strength and spindle-shaped closed cells, and that has a surface material attached to its surface. (Patent Document 10)

[0015] The mat material of Patent Document 5 forms a continuous periodic corrugated uneven structure on the surface of the mat material so as to cross the width direction of the foam material, and in this case, a multi-layer resin foam or laminate made of laminated multi-layer resin foams of different colors is profiled to form a three-dimensional band-like pattern of two or three rows on the periodic uneven structure, or an invention is disclosed in which different types of foaming agents are combined instead of forming a pattern, but the invention of Patent Document 5 does not expose the fusion layer or adhesive layer on the corrugated uneven structure surface to form a large number of circular linear patterns. Furthermore, as uses, the uses of thin foam material such as entrance mats, bath mats, and dining room flooring mats are described, and it cannot be used as a partition for an evacuation shelter because it does not have the ability to be assembled and self-supported.

[0016] In addition to the above cushioning materials and flooring materials, cardboard beds and partitions are used as flooring materials and partitioning members in evacuation shelters as described in Patent Documents 6 to 9. However, cardboard flooring requires assembly of many parts and is highly hygroscopic and lacks cushioning properties, making it impossible to maintain a comfortable living environment for evacuees using evacuation shelters. There are also partitions and floor mats using plastic sheets, but in this case, the resin sheet for the partition weighs about 10 kg, requires joint parts, and is not easy to assemble. As described above, until now, there has been no product that is lightweight, has excellent self-assembly and moisture resistance, and has sufficient cushioning properties and can be used as both a floor mat that can be used instead of a bed and a partition.

[0017] The partition material of Patent Document 10 can be used as a flooring material, but since it is not a cushion material or laminate with excellent design due to its thin thickness and profile processing, it cannot be used as a bed, and the foam itself does not have design quality. Adhesives or fixing means are required for assembly, but the present invention can be assembled simply by abutting or fitting the laminates of the present invention to each other, which is different from the present invention of Patent Document 10.

[0018] According to the present invention, there is provided a cushioning material or laminate having a substantially rectangular cut surface that can be easily assembled without using any assembly tools or assembly parts, a method for using the cushioning material or laminate that has excellent self-supporting ability due to the profiled surface being shaped in a predetermined shape, and a method for coloring the fusion layer of the cushioning material or laminate. Law The cushioning material or laminate can be easily assembled and stored, and the fusion layer can be easily colored. [Prior art documents] [Patent documents]

[0019] [Patent Document 1] Japanese Patent Application Publication No. 7-80874 [Patent Document 2] JP 2000-054610 A [Patent Document 3] JP 2005-059358 A [Patent Document 4] Japanese Unexamined Patent Publication No. 55-120813 [Patent Document 5] Jpn. Jpn. Published No. 44-013645 [Patent Document 6] JP 2019-122644 A [Patent Document 7] Registered Practice No. 3226650 [Patent Document 8] JP 2003-129593 A [Patent Document 9] JP 2006-274740 A [Patent Document 10] JP 2017-061827 A Summary of the Invention [Problem to be solved by the invention]

[0020] However, Patent Documents 1 to 3 relate to resin foams having a periodic wavy uneven structure on the surface, but all of them are merely used in some form for cushioning purposes without quality requirements for appearance. For this reason, resin foams have not been used with design features. For example, when used as a cushioning material for packaging materials, design features are not necessary, and when used as a bedding mat, the cushioning material itself is not exposed when used, so up until now, it has not been considered to impart design features such as patterns.

[0021] In addition, Patent Document 4 is an invention in which foam materials of different hardness are arranged at predetermined positions on a corrugated uneven structure surface by profiling, and Patent Document 5 is an invention in which a corrugated uneven structure that is continuous in the width direction is formed on the surface by profiling, and a predetermined foam is arranged at a predetermined position of the corrugated uneven structure to improve the design, but neither invention is an invention in which a laminated foam with a colored fusion layer or adhesive layer is sandwiched between the fusion layer or adhesive layer and profiled to form a large number of circular linear patterns on the corrugated uneven structure surface to improve the design, nor is it an invention in which functionality is imparted to the fusion layer or adhesive layer. Patent Documents 6 to 9 do not use resin foam, are not excellent in design, require assembly work of many parts, and are highly hygroscopic and have no cushioning properties, so the living environment of evacuees using evacuation shelters cannot be kept comfortable. Patent Document 10 is an invention in which the foam itself is not excellent in design, is not profiled, and cannot be used as a bed.

[0022] The present invention has been made in view of the above problems, and provides a cushioning material or laminate having a substantially rectangular cut surface that can be easily assembled without using any assembly tools or assembly parts, a method for using the cushioning material or laminate that has excellent self-supporting properties due to the profiled surface being shaped in a predetermined form, and a method for coloring the fusion layer of the cushioning material or laminate. Law The purpose of this document is to provide do. [Means for solving the problem]

[0023] A first invention for achieving the above-mentioned object is a cushioning material or laminate, one surface of which is a profiled surface having a wavy uneven structure in which peaks and valleys are alternately and periodically arranged lengthwise and widthwise, and the other surface is a flat surface, or a laminate in which a sheet-like resin foam made of another polyolefin resin is laminated and adhered or fused to the other flat surface on the back side of the surface of the cushioning material where the wavy uneven structure is formed, wherein both the cushioning material and the laminate have a substantially rectangular shape in a plan view, and the substantially rectangular cut surface is formed so that the cross-sectional area of ​​the parallel portion occupying the cut surface of the cushioning material or the laminate is maximized. and the cross-sectional area of ​​the parallel portion of the cut surface of the cushioning material or the laminate is maximized. A fixing means is attached as a connecting member to the cut surface of the side end surface on the short side of the cut surface in the approximately rectangular shape. The cushioning material or laminate is characterized in that

[0024] child Since the side end faces of the cushioning material or laminate include profiled surfaces, the area of ​​the flat portion to which the fastening means is attached varies depending on the cutting position. Therefore, by selecting the cross section with the largest parallel portion area on the side end face and using that section as the cutting position, the area to which the fastening means such as a hook-and-loop fastener is attached can be maximized.

[0025] The raw material resin of the resin foam constituting the cushioning material or the laminate may be at least one of polyethylene, low-density polyethylene, high-density polyethylene, ethylene-vinyl acetate copolymer, or polypropylene resin, or a mixture of two or more of these. Furthermore, the resin foam may contain a predetermined amount of a polyethylene resin or polypropylene resin having a functional group having a carboxyl group or an acid anhydride structure, such as maleic anhydride, in order to improve the fusion property of the raw material resin during fusion. Here, the predetermined amount means a resin containing 0.5 parts by mass or more and 10 parts by mass or less of a polyethylene resin or polypropylene resin having a functional group having a carboxyl group or an acid anhydride structure, when the total amount of the raw material resin is 100 parts by mass, and preferably 5 parts by mass or less.

[0026] The resin foam constituting the cushioning material or the laminate may be a polyethylene resin foam, and the polyethylene resin foam may have a closed cell structure with an expansion ratio of 20 to 40 times, and may further have a compression set of 3.0% to 7.4% based on JIS K6767, and a compressive stress of 34 kPa to 56 kPa when compressed by 25% at a test temperature of 25°C.

[0027] The resin foam constituting the cushioning material or the laminate may be any one of silica, zirconium phosphate, zeolite, zinc sulfate, and zirconium sulfate as a deodorant, or amorphous calcium phosphate particles having silver ions adsorbed thereon as an antibacterial or antiviral agent, or titanium oxide particles having an anatase crystal structure having a photocatalytic effect, silver, copper, zinc Either Antibacterial metal compound particles, silver, copper, zinc Either The metal fine particles may be contained in a range of 0.5 parts by mass to 10 parts by mass relative to 100 parts by mass of the resin component, but the range of 0.5 parts by mass to 5 parts by mass is preferable. Including is preferred.

[0028] The cushioning material or the laminated surface of the resin foam that constitutes the laminate has an adhesive layer formed thereon using an adhesive to impart functionality to the adhesive layer. Vibration-damping properties may be imparted to the adhesive layer by using an adhesive containing, as a main component, at least one flexible resin selected from the group consisting of urethane resin, vinyl acetate emulsion, acrylic resin, silicone resin, and modified silicone resin, or flame retardancy and vibration-damping properties may be imparted by using an adhesive containing, as essential components, an acrylic acid ester polymer, a halogen-containing phosphate ester, and an inorganic flame retardant.

[0029] The fusion layer or adhesive layer of the cushioning material or the laminate is a fusion layer, and the fusion layer formed approximately parallel to the other surface is exposed at a predetermined height on the surface of the wavy uneven structure, forming a number of annular linear patterns spaced apart from each other at a predetermined distance, and the linear patterns separate the peaks and valleys of the wavy uneven structure and are formed at a predetermined height between the peaks and valleys so as to surround each peak, and the fusion layer may be selectively formed in a different color by superimposing changes in crystallinity and molecular orientation as well as the residual effect of ADCA on the foam surface when the surface of the resin foam forming the fusion layer crystallizes in the process of melting and then solidifying during fusion.

[0030] The cushioning material or laminate may have a linear pattern formed by a fusion layer, the linear pattern of the cushioning material or laminate is colored yellow, and at least one of the peak side and the valley side of the linear pattern having a wavy uneven structure is colored in a different color to form a three-dimensional pattern. .

[0031] The cushioning material or the laminate is substantially rectangular in shape, with the long side being twice as long as the short side, The method for using a cushioning material or laminate may be characterized in that the ratio R of the height (Hv) from the flat surface of the back surface of the cushioning material or laminate to the valley portions of the profiled surface to the average height (Hc) corresponding to the center line height of the wave-shaped uneven structure of the profiled surface from the flat surface of the back surface of the cushioning material or laminate is 60% or more, so that when the cushioning material or laminate is used with one short side erected and fixed and supported, with the long side serving as a ground contact surface and the short side serving as an erection surface, the cushioning material or laminate has excellent self-supporting ability when assembled and used in an upright position. Here, the average height (Hc) of the profiled surface is the average height of the height (Hm) from the flat surface of the sheet-like foam on the back surface of the cushioning material or the laminate to the peak of the profiled surface and the height (Hv) from the flat surface of the sheet-like foam on the back surface of the cushioning material or the laminate to the valley of the profiled surface. In other words, it is the ratio of the average height of the profile-machined surface from the back surface of the laminate to the height to the valley of the profile-machined surface, which corresponds to the ratio of the average height (center line height) of the profile-machined surface to the height of the non-profile-machined surface. In the present invention, self-supporting assembly means that when the side end portion and the side surface of the short side of the back surface of an approximately rectangular laminate, whose long side is twice the length of the short side of a specified dimension, are used as fixed ends and the two are abutted at approximately right angles and assembled using a simple fixing means, no bending or flexing occurs at the free end, which is the end face of the short side on the opposite side of the laminate, meaning that the division partition can be assembled easily and stably. Here, a hook-and-loop fastener can be used as the simple fastening means, but other simple fastening means such as a button-shaped fastener (also called a snap fastener) or a tape-shaped member with a magnet fixed thereto can also be used. For simplicity, the simple fastening means will be referred to as the fastening means below. For hook-and-loop fasteners, the back side of the hook-and-loop fastener is fixed to the laminate with a pressure-sensitive adhesive or adhesive, and for tape-like members with button-shaped fasteners or magnets attached, the tape-like members can be fixed to the laminate with a pressure-sensitive adhesive or adhesive. It is desirable to provide the fixing means evenly over the entire short side from the upper end to the lower end, but there is no problem if the fixing means is divided into the upper, middle and lower parts and supports the material as long as the support is sufficiently stable.

[0032] the fusion layer or adhesive layer of the cushioning material or laminate is a fusion layer, the fusion layer is exposed, and a number of annular linear patterns are formed separating the peaks and valleys of the corrugated uneven structure at a predetermined distance from each other, The method for coloring the fusion layer of the cushioning material or laminate may be characterized in that the fusion layer is selectively formed in a different color, yellow, by combining changes in crystallinity and molecular orientation when the surface of the resin foam that forms the fusion layer during fusion crystallizes in the process of melting and solidifying, and the residual effect of ADCA on the foam surface. Effect of the Invention

[0056] According to the present invention, the assembly can be easily performed without using any assembly tools or assembly parts. The cross-sectional area of ​​the parallel part of the cut surface is maximized. Almost rectangular shape A fixing means is attached to the cut surface of the short side end surface of the cut short side. Cushioning material or laminate having cut surfaces It is possible to provide Method for using cushioning material or laminate having excellent self-supporting ability by forming a profiled surface into a predetermined shape, and method for coloring the fusion layer of cushioning material or laminate Law The cushioning material or laminate of the shelter compartment of the present invention can be provided. By setting the foaming ratio within a predetermined range, the compression set and compressive stress can be set within a predetermined range. Because it has excellent self-assembly properties, it is easy to assemble and can be made lightweight and has excellent design. The fusion layer can be colored in a specified color. Furthermore, by using cushioning materials or laminates that have functionality such as vibration damping, flame retardancy, and antibacterial properties, it is possible to create a functional connection structure. [Brief description of the drawings]

[0057] [Figure 1A] FIG. 2 is a perspective view showing the front surface side of the cushion material 1. [Figure 1B]FIG. 2 is a rear perspective view showing the cushion material 1. [Diagram 2] FIG. [Diagram 3] 3 is a cross-sectional view of the cushioning material 1 taken along line AA in FIG. 2. [Figure 4] 1 is a schematic diagram showing a resin foam production apparatus 20. FIG. [Figure 5A] FIG. [Figure 5B] 4 is a side view of rolls 31a and 31b. [Figure 6A] 3A and 3B are diagrams showing a method of manufacturing the cushioning material 1 using rolls 31a and 31b. [Figure 6B] Enlarged view of part C in Figure 6A. [Figure 7] FIG. [Figure 8A] FIG. 2 is a diagram showing a state in which cushion materials 1 are arranged opposite each other. [Figure 8B] FIG. [Figure 9A] FIG. 2 is a diagram showing a state in which the wavy uneven structure of the cushioning material 1 is arranged facing the outer surface. [Figure 9B] FIG. [Figure 10] FIG. 8C is a cross-sectional view of the laminated structure 40 taken along line FF in FIG. 8B. [Figure 11] FIG. [Figure 12A] FIG. [Figure 12B] FIG. [Figure 13] A diagram showing a shelter section 50. [Figure 14A] FIG. 13 is a diagram showing the relationship between the cutting position of the laminate and the cross-sectional shape of the cut end side surface, showing the cutting position as viewed from the profile-processed surface of the laminate. [Figure 14B] FIG. 13 is a diagram showing a cut surface when cutting along a curve that alternately passes through the peaks and the bottoms of the valleys. [Figure 14C] FIG. 2 shows a cross section obtained by cutting in a straight line connecting an inflection point located (1 / 4) pitch away from the top of the peak and the bottom of the valley. [Figure 15A] FIG. 4 is a front view showing a method for storing the cushion material 1. [Figure 15B] FIG. 4 is a plan view showing a method for storing the cushion material 1. [Figure 16A] FIG. 4 is a front view showing the shock absorbing wall panel 60. [Figure 16B] FIG. 4 is a plan view showing the shock absorbing wall panel 60. [Figure 16C] FIG. 4 is an enlarged view of the vicinity of hook-and-loop fasteners 53c and 53d. [Figure 17] A diagram showing the situation of a nearly right-angle connection test to evaluate the assembly independence of a partition for a compartment. [Figure 18A] A diagram showing the dimensions of each part of a partition. [Figure 18B] FIG. 13 is a diagram showing a state in which the peak portion 5a is inverted and fitted to the valley portion 7a side. [Figure 18C] FIG. 13 is a diagram showing a state in which the peak portion 5a is inverted and fitted to the valley portion 7a side. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0058] (First embodiment) Hereinafter, an embodiment of the present invention will be described with reference to the drawings. Fig. 1A is a perspective view of a front surface of a cushion material 1, Fig. 1B is a perspective view of a rear surface of the cushion material, and Fig. 2 is a schematic plan view of the cushion material 1.

[0059] The cushioning material 1 is made of a polyolefin resin foam. Peaks 5 and valleys 7 are formed on one surface (surface 3) of the cushioning material 1. The peaks 5 and valleys 7 are periodically arranged alternately vertically and horizontally. That is, the surface 3 of the cushioning material 1 has a corrugated uneven structure, the peaks 5 are formed at predetermined intervals, the valleys 7 are formed between the peaks 5, and the peaks 5 and valleys 7 are arranged in a so-called staggered arrangement. Therefore, valleys 7 are formed at the locations vertically and horizontally adjacent to the peaks 5, and peaks 5 are formed at the locations vertically and horizontally adjacent to the valleys 7.

[0060] The other surface (rear surface 9) of the cushion material 1 is flat and does not have the peaks 5 and valleys 7. That is, the cushion material 1 has the peaks 5 and valleys 7 only on the front surface 3.

[0061] Fig. 3 is a cross-sectional view taken along line AA in Fig. 2. As shown in the figure, the peaks 5 are thicker, and the valleys 7 are thinner. Between the peaks 5 adjacent to each other in the diagonal direction (between the valleys 7 adjacent to each other in the diagonal direction), a ridge is formed that has a thickness approximately halfway between the peaks 5 and the valleys 7. That is, the wavy uneven structure on the surface of the cushioning material 1 is formed smoothly and continuously in this manner.

[0062] The cushion material 1 is also provided with an adhesive layer 17 formed on the laminated surfaces of the resin foams 15a and 15b, which are laminated with the resin foams 15a and 15b forming the peaks and valleys 7, respectively. In the following description, an example in which the adhesive layer 17 is formed on the laminated surfaces of the resin foams 15a and 15b will be described, but a fusion layer may be used instead of the adhesive layer 17. When the adhesive layer is not colored, it is recognized as being white, which is almost the same color as the resin foams 15a and 15b, as is the fusion layer. Since the cross section of the cushion material is usually not visible, the colored adhesive layer or fusion layer is observed as a number of circular linear patterns, as will be described later.

[0063] When the adhesive layer 17 is formed on the laminated surface of the resin foams 15a and 15b, an adhesive containing at least one type of flexible resin selected from urethane resin, vinyl acetate emulsion, acrylic resin, silicone resin, and modified silicone resin as a main component can be used. In particular, by using an adhesive containing at least one type of flexible resin selected from the group consisting of urethane resin, silicone resin, and modified silicone resin as a main component, vibration damping properties can be imparted to the cushioning material 1. Also, an adhesive containing an acrylic acid ester polymer, a halogen-containing phosphate ester, and an inorganic flame retardant as essential components can be used for the adhesive layer 17. In this way, flame retardancy and vibration damping properties can be imparted to the cushioning material 1. In this way, the corrugated uneven structure of the cushioning material 1 may be one in which functionality is imparted to the adhesive layer 17 (or the fusion layer).

[0064] An adhesive layer 17 formed approximately parallel to the back surface 9 is exposed at a predetermined height on the surface 3 of the corrugated uneven structure. The adhesive layer 17 forms a number of annular linear patterns 11 at a predetermined distance from each other in a plan view. The linear patterns 11 are formed annularly at a predetermined height between the peaks 5 and the valleys 7 to separate the peaks 5 and the valleys 7 of the corrugated uneven structure and surround each peak 5, and are excellent in design and moisture resistance. That is, the surface 3 of the cushioning material 1 is divided into three parts: the peaks 5 formed by the resin foam 15a above the linear patterns 11, the linear pattern forming part 13 where the linear patterns 11 are formed, and the valleys 7 formed by the resin foam 15b below the linear patterns 11. The adjacent valleys 7 are continuous with each other and integrated.

[0065] The resin foams 15a and 15b are preferably at least one of polyethylene, low-density polyethylene, high-density polyethylene, ethylene-vinyl acetate copolymer, and polypropylene resin, or a mixture of two or more of these. In this case, the foaming ratio of the resin foams 15a and 15b is preferably 20 to 40 times. In particular, the resin foams 15a and 15b are preferably polyethylene resin. This polyethylene resin preferably has a compression set of 3.0% to 7.4% based on JIS K6767, and a compressive stress of 34 kPa to 56 kPa at 25% compression at a test temperature of 25°C.

[0066] The compressive stress of the resin foams 15a and 15b is measured by a compressive stress test according to ISO 3386-1, compressive stress strain, in JIS K6767: 1999. At this time, the moving speed of the compression plate of the tester is about 50% of the material thickness per minute, the test temperature is 25°C, and the compressive stress is measured when the material is compressed by 25% of the thickness.

[0067] The compression set of the resin foams 15a and 15b is measured by a test according to ISO 1856 in JIS K6767:1999. The compression set can be obtained by compressing a test piece to a 25% strain state, leaving it at a temperature of 23°C ± 2°C for 22 hours, and measuring the thickness 24 hours after the end of compression.

[0068] In this way, by using polyethylene resin for the resin foams 15a and 15b, it is possible to reduce the hygroscopicity (water absorption rate) of the cushioning material 1. The water absorption rate of the resin foams 15a and 15b is measured by ISO2896 method B. In the case of a sample having a skin layer formed on both sides or one side, the water absorption rate can be calculated by the following formula. Qs = (W1-W2) / A Qs: Water absorption rate (g / cm 2 ) W1: Mass (g) of the test piece immediately after cutting into 100 mm x 100 mm W2: Mass of the test piece after drying at 60℃ for 24 hours (g) A: Area of ​​the test piece (cm2 ) In the present invention, the water absorption rate of polyethylene is 0.03 mg / cm 2 It is desirable that the following:

[0069] The resin foams 15a and 15b preferably have a tensile strength in the MD direction of 273 kPa to 495 kPa and a tensile strength in the TD direction of 201 kPa to 333 kPa. The resin foams 15a and 15b preferably have an elongation value in the MD direction of 92% to 100% and an elongation value in the TD direction of 114% to 120%. The tensile strength and elongation are obtained from the tensile strength and elongation at break in a test performed at a test speed of 500 mm / min in accordance with ISO1798.

[0070] The resin foams 15a and 15b may contain a deodorant such as silica, zirconium phosphate, zeolite, zinc sulfate, or zirconium sulfate in an amount of 0.5 to 5 parts by mass per 100 parts by mass of the resin component. By adding a deodorant in this manner, a deodorant function can be imparted.

[0071] Next, a method for manufacturing the cushioning material 1 will be described. First, the resin foams 15a and 15b are manufactured. Fig. 4 is a diagram showing a resin foam manufacturing apparatus 20. The resin foam manufacturing apparatus 20 is mainly composed of an extruder 21, a roll molding machine 23, a heating furnace 25, a winding machine 27, etc.

[0072] For example, a raw resin (e.g., polyethylene resin), a pigment, and a master batch containing a chemical foaming agent and a crosslinking agent are put into an extruder 21, and extruded into a sheet shape of a predetermined width. Next, the material is passed through a roll forming machine 23 to adjust the material thickness and width. Furthermore, in a heating furnace 25, the material is conveyed on a wire mesh conveyor into a furnace set so that the temperature gradually increases toward the inner side of the furnace within a predetermined temperature range (e.g., 190°C to 240°C). In the heating furnace 25, the crosslinking agent is first thermally decomposed to crosslink the polyethylene resin, and then the chemical foaming agent is thermally decomposed to obtain resin foams 15a and 15b of a predetermined sheet thickness (preferably 15 mm to 20 mm) at a predetermined expansion ratio (e.g., 30 times).

[0073] In addition, when manufacturing the resin foams 15a and 15b, DCP (dicumyl peroxide) can be used as a crosslinking agent. In this case, ADCA can be used as a chemical foaming agent without using a bubble nucleating agent. Generally, the nucleating agent is monosodium citrate, a surfactant, silicone oil, etc., and carbon dioxide gas may be used as a physical nucleating material. If the fusion layer is to be discolored yellow, it is preferable to use ADCA as the chemical foaming agent.

[0074] Next, the obtained resin foams 15a and 15b are laminated by fusion or adhesion. The resin foams 15a and 15b to be adhered or fused may have the same thickness or different thicknesses.

[0075] For example, adhesive is applied to each surface of the resin foams 15a and 15b, and the opposite surface not coated with adhesive is pressed by a press, or one of the resin foams 15a and 15b is passed through a roll coated with adhesive to apply adhesive to the resin foam, and the other resin foam is superimposed on the surface coated with adhesive as the bonding surface, and the two resin foams can be bonded by passing through another roll. At this time, the adhesive can be colored with an organic dye, dye, pigment, or the like, or at least one bonding surface can be colored with an organic dye, dye, pigment, or the like. In addition, when the resin foams 15a and 15b are heat-sealed, they can be heated to about 180°C for about 10 to 20 seconds with a far-infrared heater, and then passed through a roll to be heat-sealed. Here, the fused surface can be colored with an organic dye, dye, pigment, or the like, as in the case of adhesion. In addition, the resin remelts and recrystallizes when the surface of the resin foam and the fused parts are fused, and by combining the effects of changes in the crystallization state and molecular weight at that time and the tendency for ADCA residues to remain on the surface, it is possible to color the fused parts yellow.

[0076] Next, a profile is applied to the sheet-like resin foams (hereinafter referred to as laminated resin foams) having a predetermined thickness that face each other with the adhesive layer sandwiched therebetween. Fig. 5A is a front view showing rolls 31a and 31b, which are profile rolls used for profiling the cushion material 1, and Fig. 5B is a side view showing the rolls 31a and 31b. Note that roll 31b has the same configuration as roll 31a, and therefore a description thereof will be omitted.

[0077] The roll 31a is a cylindrical roll having a plurality of protrusions 33 formed on its surface. The protrusions 33 are arranged in a staggered pattern on the surface of the roll 31a. That is, the protrusions 33 are formed at a predetermined interval (predetermined pitch) in the longitudinal direction of the roll 31a, and adjacent protrusions 33 in the circumferential direction are formed at positions shifted by half a pitch from the aforementioned installation pitch. The area surrounded by the protrusions 33 becomes a recess 35. The recess 35 is slightly larger than the protrusions 33, and the protrusions 33 and recess 35 facing each other can mesh with each other.

[0078] The rolls 31a and 31b are arranged facing each other at a predetermined interval. The interval between the rolls 31a and 31b is adjustable. In this case, the rolls 31a and 31b are arranged at circumferential positions such that the positions of the convex portions 33 and the concave portions 35 of the facing rolls 31a and 31b do not coincide with each other.

[0079] That is, in a state where the rolls 31a and 31b are placed opposite each other, when the convex portion 33 of the upper roll 31a is located at the lowest end (opposing side to the roll 31b) at a certain circumferential cross-sectional position (for example, FIG. 5B), the concave portion 35 is located at the uppermost end (on the roll 31a side) of the lower roll 31b. Moreover, the rotation of each of the rolls is controlled and synchronized so that such positions are repeated alternately. The convex portions 33 and concave portions 35 of the rolls 31a and 31b in the longitudinal direction are also placed alternately so as not to coincide with each other.

[0080] 6A is a diagram showing a state in which the cushioning material 1 is manufactured using the rolls 31a and 31b. As described above, the rolls 31a and 31b are placed at a predetermined interval. The rolls 31a and 31b rotate in opposite directions (directions of arrows D in the figure) and bite into the laminated resin foam 39 from one side. The laminated resin foam 39 is formed by laminating and bonding or fusing the above-mentioned resin foams 15a and 15b.

[0081] Here, the laminated resin foam 39 is obtained by laminating and bonding or fusing the resin foams 15a and 15b having the same foaming ratio and sheet thickness as described above. The laminated resin foam 39 is bitten by the rolls 31a and 31b and sequentially sent backward (in the direction of the arrow E in the figure). A cutting blade 37 is provided slightly rearward of the biting portion of the rolls 31a and 31b. The cutting blade 37 cuts the laminated resin foam 39 perpendicularly to the thickness direction, and has a width at least equal to or greater than the width of the laminated resin foam 39. The laminated resin foam 39 is sent backward of the rolls 31a and 31b while being crushed (deformed) by the rolls 31a and 31b, and is cut perpendicularly to the thickness direction by the cutting blade 37 in a state where it has been deformed by the rolls 31a and 31b.

[0082] Fig. 6B is an enlarged view of part C in Fig. 6A. The laminated resin foam 39 is elastically deformed by the convex portions 33 and concave portions 35 of the rolls 31a and 31b. As described above, the rolls 31a and 31b rotate so that the convex portions 33 (concave portions 35) of the roll 31a and the concave portions 35 (convex portions 33) of the roll 31b are in staggered positions. Therefore, the laminated resin foam 39 becomes wavy, weaving between the convex portions 33 and concave portions 35 of the upper roll 31a and the convex portions 33 and concave portions 35 of the lower roll 31b.

[0083] The cutting blade 37 cuts the laminated resin foam 39 while the laminated resin foam 39 is in a wavy shape. Here, the cutting blade 37 is placed at approximately the center of the laminated resin foam 39 in the thickness direction (halfway between the rolls 31a and 31b). However, the laminated resin foam 39 is deformed into a wavy shape at the portion where cutting is actually performed. Therefore, the laminated resin foam 39 is not cut straight at the center of the laminated resin foam 39 in the thickness direction, but is cut into a wavy shape in the thickness direction.

[0084] Here, the adhesive layer 17 is formed inside the laminated resin foam 39. Therefore, when the laminated resin foam 39 is deformed into a corrugated shape, the adhesive layer 17 also deforms up and down repeatedly into a corrugated shape while forming the center line of the laminated resin foam 39. The cutting blade 37 cuts the laminated resin foam 39 so as to cross the corrugated adhesive layer 17.

[0085] The cut laminated resin foam 39 is sent to the rear of the rolls 31a, 31b while the deformation caused by the rolls 31a, 31b (protrusions 33, recesses 35) returns to its original state. At this time, the portion cut by the cutting blade 37 returns to a corrugated shape. Therefore, peaks 5 and valleys 7 are formed on the cut surface of the laminated resin foam 39. That is, the portion deformed into the recesses 35 of the rolls around the cutting blade 37 becomes the peaks 5 of the cushion material 1, and the portion crushed by the protrusions 33 of the roll becomes the valleys 7 of the cushion material 1. That is, the contact surface with the rolls 31a, 31b has a flat shape, while the cut surface has a corrugated uneven structure in which peaks and valleys are alternately and periodically arranged lengthwise and widthwise in accordance with the uneven pitch of the rolls 31a, 31b.

[0086] As described above, in this embodiment, the laminated resin foam 39 immediately after passing the rolls 31a and 31b, which are profile rolls, is sliced ​​and cut at a position including the adhesive layer 17 (or fusion layer; the same applies below) before the pressing force from the upper and lower rolls 31a and 31b has completely recovered elasticity. In this way, the adhesive layer 17 is cut so as to cross the curved adhesive layer 17 in a curved state, so that when the cut and separated laminated resin foam 39 recovers elastically and the adhesive layer 17 is formed on a flat surface with a predetermined length and a predetermined shape, the adhesive layer 17 is exposed at a predetermined height on the surface between the peaks 5 and valleys 7 of the corrugated uneven structure of the laminated resin foam 39, and the cushion material 1 is formed with a periodic linear pattern 11 in a zigzag pattern corresponding to the longitudinal and transverse directions of the roll as an exposed portion of the flat surface. As a result, a pair of cushion materials 1 having a corrugated uneven structure formed by profile processing are formed.

[0087] The cushioning material 1 obtained in this manner can be used, for example, as a disaster relief mat material that can be used as a bed, with the surface (front surface 3) on which the wavy uneven structure is formed as the upper surface and the other surface (back surface 9) as the lower surface.

[0088] As described above, according to this embodiment, a cushioning material 1 having a wavy uneven structure on the front surface 3 and a flat back surface 9 can be obtained. In this case, a large number of annular linear patterns 11 are formed in a staggered pattern at a predetermined height of the peaks 5 of the wavy uneven structure, resulting in excellent design. In addition, such a cushioning material 1 can be obtained by profiling the laminated resin foam 39, resulting in good manufacturability. Note that, as will be described in detail later, at least one of the laminated resin foams 15a, 15b is colored, or both resin foams 15a, 15b are colored differently, so that a three-dimensional solid pattern can be formed in which the peaks 5 side and the valleys 7 side (including the bottom) of the wavy uneven structure are colored in different colors with respect to the linear pattern forming portion 13, with the position of the linear pattern 11 (adhesive layer 17) as the interface.

[0089] In the illustrated example, the cutting blade 37 is installed at approximately the center of the rolls 31a and 31b (approximately the center in the thickness direction of the laminated resin foam 39 to be cut), but this is not limited thereto. For example, the cutting position may be moved vertically by a predetermined amount within the range of the height of the formation position of the corrugated peaks 5 and valleys 7 of the adhesive layer 17 in a state where it is bitten by the rolls 31a and 31b (not exceeding the width (height) of the curvature formed in the adhesive layer or fusion layer of the laminated resin foam 39) to adjust the height at which slicing is performed at the exit side of the rolls. Alternatively, the cutting blade 37 may be left installed at approximately the center of the rolls 31a and 31b, and the sheet thickness of one of the resin foams 15a and 15b may be increased to shift the formation position of the adhesive layer 17 of the laminated resin foam 39 from the center of the thickness.

[0090] This makes it possible to change the area ratio of the peaks 5 and valleys 7 of the cut corrugated uneven structure. As a result, the size of the linear pattern 11 and the three-dimensional pattern formed by the adhesive layer 17 can be adjusted. In this way, by changing the area of ​​the peaks 5 formed by the resin foam 15b and the area ratio of the valleys 7 formed by the resin foam 15a, the texture and design of the three-dimensional design in which at least one of the resin foams 15a and 15b is colored can be significantly changed. In this way, it is also possible to obtain two cushion materials 1 with different sizes of linear patterns 11 by adjusting the positions at which the peaks 5 and valleys 7 of the corrugated uneven structure are formed and adjusting the size of the multiple annular linear patterns 11.

[0091] Furthermore, if the resin foams 15a and 15b are made of polyethylene, they have low moisture absorption properties, and therefore the moisture resistance of a mat or the like using the cushioning material 1 can be improved. Therefore, when the cushioning material 1 is used as a mat in the event of a disaster, the cushioning material 1 does not absorb moisture, and furthermore, since it is formed of a profiled foaming material, it can also be used as a bed, providing a comfortable sleeping and living environment.

[0092] Other functions can also be imparted to the adhesive layer 17. For example, vibration damping and flame retardant functions can be imparted. Furthermore, the resin foams 15a and 15b may be imparted with a deodorizing function.

[0093] In addition to the above, the laminate may be formed by laminating flat resin foams 15c and 15d to the cushion material 1 formed by slicing two layers of resin foam, after roll molding, as described below.

[0094] Second embodiment Next, a second embodiment will be described. Fig. 7 is a cross-sectional view showing a laminate 1a in which a sheet-shaped resin foam is fused or adhered to the back surface of a cushioning material. In the following description, the same components as those in the cushioning material 1 are denoted by the same reference numerals as in Figs. 1A to 6B, and duplicated description will be omitted.

[0095] The laminate 1a has a configuration substantially similar to that of the cushion material 1, but differs in that the sheet-shaped resin foam 15c is fused or adhered to the back surface of the cushion material 1, and the resin foam 15c is laminated. The laminate 1a has another sheet-shaped resin foam 15c laminated and adhered or fused to the other flat surface of the back surface of the cushion material 1 on which the corrugated uneven structure is formed. Note that the laminate 1a may have another sheet-shaped resin foam laminated and adhered or fused to the back surface 9 of the laminate 1a, but usually one layer of the sheet-shaped resin foam to be fused or adhered is sufficient.

[0096] In this case, it is desirable that another sheet-like resin foam 15c, which is fused or bonded to the back surface of the cushioning material, is harder than or has the same strength as the resin foams 15a and 15b having the corrugated uneven structure. By making the sheet-like resin foam 15c attached to the back surface of the cushioning material from a resin having a lower foaming ratio than the resin foams 15a and 15b, it is possible to improve the self-supporting assembly when used as a partition for dividing a space, which will be described later.

[0097] The method for producing the laminate 1a is not particularly limited, but for example, the four-layer laminated resin foam may be cut using rolls 31a and 31b shown in Figs. 5A and 5B. First, a four-layer laminated resin foam is formed by further adhering or fusing another sheet-like resin foam layer to the outer side of each of the sheet-like resin foams of a predetermined thickness that face each other with an adhesive layer or fusion layer sandwiched therebetween. In this case, the same processing as that for the two-layer laminated resin foam 39 can be performed by adjusting the roll interval between the rolls 31a and 31b and performing slicing processing between the intermediate second and third layers excluding the upper and lower surface layers (the first and fourth layers). Therefore, laminates 1a and 1b can be obtained in which flat resin foams 15c or 15c and 15d are bonded to the flat back surface of resin foam 15b having a corrugated uneven structure on the surface on which the periodic linear pattern 11 is formed.

[0098] In this way, by maintaining the curved shape created by profile roll processing inside the resin foam layers that form the two inner layers of the four layers, and performing slicing processing between the second and third intermediate layers, it is possible to produce a laminate in which a flat sheet-like foamed resin layer is integrated into the outer layer of the profiled inner resin layer.

[0099] According to the second embodiment, it is possible to obtain the effect of improving the design, similarly to the first embodiment. In addition, by laminating the resin foam 15c and the like, it is possible to obtain the laminates 1a and 1b having a larger thickness, and thus obtain a greater cushioning effect. In addition, since the thickness is increased, it is possible to improve the self-assembly property of the laminate in addition to the moisture resistance.

[0100] In this case, the laminates 1a and 1b can provide the necessary heat insulation, cushioning and moisture resistance for the partition members of the evacuation shelter, and have excellent design because of the periodic pattern of the corrugated uneven structure on the surface, and the sheet-like resin foams 15c and 15d increase the thickness, so that the assembly self-supporting property is also improved. Therefore, as described later, when used as a partition wall for a partition of a shelter, it can be easily made to stand on its own. Furthermore, the laminates 1a and 1b are lightweight and at the same time, the end side of the laminates 1a and 1b and the flat part of the laminates 1a and 1b can be fixed by, for example, a hook-and-loop fastener, so that the partition wall for a partition of a shelter can be easily formed without using tools or assembly parts. Therefore, it can be suitably used as a partition member of a shelter.

[0101] Moreover, the design can be further improved by changing the color of the foam above and below the fusion or adhesive surface of the corrugated uneven structure of the laminates 1a and 1b. Therefore, when used as a partition material for the partition wall of a shelter or as a floor mat, the floor mat can be used as a bed because it has further functionality such as heat insulation, cushioning, and moisture resistance, and it has the effect of not only keeping the living environment of disaster victims in the shelter comfortable, but also keeping the mood of the disaster victims bright.

[0102] Furthermore, by making the sheet-like resin foam 15c, etc. to be laminated harder than or of equal strength to the resin foams 15a, 15b having a wavy uneven structure, when the laminates 1a, 1b are used as a mat, excessive sinking can be suppressed while maintaining cushioning properties. That is, taking a mat material as an example, it is possible to obtain a mat material that is lightweight, has excellent design, and has excellent moisture resistance and heat insulation, and therefore can be used exposed on the floor of a gymnasium in a disaster area, etc. In this way, since the laminates 1a and 1b have excellent moisture resistance and can suppress excessive sinking while maintaining cushioning properties, they can be used as a bed and are suitable as a mat material that also serves as a bed for an evacuation shelter. In addition, if the laminates 1a and 1b are made into a laminate of a predetermined size and shape, they can be used as a partition for division that has excellent assembly self-supporting properties, as described below.

[0103] (Third embodiment) Next, a third embodiment will be described. Fig. 8A is a diagram showing a state where cushion materials 1 are arranged opposite each other. The surfaces of the wavy uneven structure of a pair of cushion materials 1 are arranged opposite each other. This embodiment relates to a method of using a cushion material in which two cushion materials 1 are stacked and used as a laminated structure of the cushion material 1. Here, the laminated structure means a structure in which cushion materials are stacked and used, and the laminated parts do not necessarily need to be bonded together by fusion or adhesion, and the flat surfaces of the cushion materials may be fixed to each other with hook-and-loop fasteners, or the wavy uneven structure surfaces of the cushion materials may simply be arranged opposite each other.

[0104] FIG. 8B is a diagram showing a laminated structure 40 in which the peaks and valleys of a pair of cushion materials 1 are combined and laminated with each other. That is, FIG. 8B is a diagram showing a method of using a cushion material in which two cushion materials 1 are laminated and used. The peaks 5a formed on one cushion material 1 (lower in the figure) and the valleys 7b formed on the other cushion material 1 (upper in the figure) are arranged to face each other. Similarly, the valleys 7a formed on one cushion material 1 (lower in the figure) and the peaks 5b formed on the other cushion material 1 (upper in the figure) are arranged to face each other. In this way, by overlapping the surfaces of the cushion materials 1 on which the corrugated uneven structures are formed, the corrugated uneven structures of each cushion material 1 are meshed with each other to form a sheet-like laminated structure 40 in which the linear patterns 11 are formed side by side on approximately the same plane.

[0105] FIG. 9A is a diagram showing a state in which the peaks 5 and valleys 7 of a pair of cushion materials 1 are facing each other with their flat portions facing each other outward, and FIG. 9B is a diagram showing a laminated structure 40a in which a pair of cushion materials 1 are laminated. That is, FIG. 9B is a diagram showing a method of using the cushion material 1 by facing the flat surfaces of the cushion materials 1. The surfaces of the corrugated uneven structures of the pair of cushion materials 1 are facing each other outward in opposite directions, and the flat surfaces that are the back surfaces of the corrugated uneven structures are brought into contact with each other, and the contact surfaces may be fixed to each other by a fixing means such as a hook-and-loop fastener, if necessary. At this time, the peaks 5a formed on one cushion material 1 (lower in the figure) and the valleys 7b formed on the other cushion material 1 (upper in the figure) are arranged at a predetermined distance away from each other toward the outside. Similarly, the valleys 7a formed on one cushion material 1 (lower in the figure) and the peaks 5b formed on the other cushion material 1 (upper in the figure) are arranged at a predetermined distance away from each other toward the outside.

[0106] That is, the valley portions 7b of one cushion material 1 are located on the back surface of the peak portions 5a of the other cushion material 1, and the peak portions 5b of the other cushion material 1 are located on the back surface of the valley portions 7a of one cushion material 1. By stacking the flat surfaces facing each other in this manner, as shown in Fig. 9B, the laminated structure 40a is configured such that the surfaces on which the wavy uneven structure of one of the cushion materials is formed face the outer surfaces on both sides of the laminated structure 40a, so that the wavy uneven structure is formed approximately parallel on both sides and a large number of linear patterns 11 are formed in a row on the outer surface, thereby realizing a panel-like laminated structure with excellent design.

[0107] Fig. 10 is a cross-sectional view taken along the line FF in Fig. 8B. As shown in the figure, the adhesive layers 17a and 17b of the respective cushion materials 1 are disposed so as to be adjacent to each other. That is, the linear patterns 11 (adhesive surfaces or fused surfaces) disposed between the peaks and valleys of the respective cushion materials 1 constituting the laminated structure 40 are disposed so as to be adjacent to each other on substantially the same plane. In this way, by overlapping the surfaces on which the wavy concave-convex structures of the cushion materials 1 are formed with each other, the linear patterns 11 can be formed so as to be aligned substantially on the same plane.

[0108] Here, in a plan view of the laminated structure 40, the apparent total occupancy rate of the adhesive layers 17a, 17b (adhesive or fused surfaces) arranged adjacently on the same plane relative to the apparent total area of ​​the plane including the adhesive surfaces is preferably 80% or more, and more preferably 90% or more. In this way, in the laminated structure 40 formed by opposing a pair of cushion materials 1, the adhesive layers 17a, 17b can be arranged on the same plane over almost the entire surface. Therefore, when the adhesive layers 17a, 17b are given functionality such as vibration damping or flame retardancy, the functionality can be exerted over almost the entire surface of the laminated structure 40. In this way, a functional plane can be formed by the adhesive or fused surfaces arranged adjacently on the same plane.

[0109] The laminated structure in which such cushioning materials are laminated is suitable, for example, as a partition material or a shock-absorbing wall panel material for evacuation shelters. When design is important, the laminated structure with a corrugated uneven structure is arranged on the outer surface, and when functionality is utilized, the corrugated uneven structures are arranged facing each other, and the surfaces to which functionality is imparted are arranged in a substantially straight line. When the laminated structure with a corrugated uneven structure is arranged on the outer surface, it can be used as is, but a dedicated stand may also be provided. In this case, it is preferable to fasten the end side surfaces of the two cushioning materials using hook-and-loop fasteners or the like.

[0110] According to the third embodiment, the same effect as that of the first embodiment can be obtained. In addition, by combining cushioning materials to form a laminated structure, such a laminated structure can be used as a partition or wall panel material at a disaster prevention site. This laminated structure provides the functionality of conventional cardboard mats and partition materials, such as heat insulation, cushioning, and moisture resistance, and therefore can provide a clean and comfortable living environment to disaster victims who have been forced to live in evacuation sites.

[0111] Moreover, by overlapping the corrugated uneven structures of the resin foams 15a and 15b so as to face each other, the positions at which the periodic linear patterns 11 appearing on the corrugated surfaces are formed can be made to be substantially aligned. That is, the linear patterns 11 (adhesive or fused surfaces) are formed so as to penetrate the interiors of the combined resin foams 15a and 15b and be arranged in a substantially planar shape. For example, by imparting sound insulation and vibration damping properties to the adhesive layer (or fused layer) constituting the linear patterns 11, it is possible to impart design properties, cushioning properties, quietness and vibration damping properties at the same time.

[0112] In this way, the profiled surface has many adhesive or fused surfaces arranged in a rectangular, circular, or elliptical shape, so when the profiled surfaces are placed opposite each other, the adhesive or fused surfaces can be arranged on approximately the same plane, although there are some gaps between them. This makes it possible to impart additional functions such as vibration damping and noise reduction to these areas. Furthermore, it is possible to impart deodorizing, antibacterial, and antiviral properties to the resin foams 15a and 15b that sandwich the adhesive or fused surfaces.

[0113] In addition, by combining the corrugated uneven structure, the thickness of the laminated structure becomes about twice the thickness of the cushioning material, which improves the self-supporting assembly when used as a partition material for partitions, etc. It goes without saying that there is no problem with the self-supporting assembly even when the corrugated uneven structure is disposed on the outer surface.

[0114] (Fourth embodiment) Next, a fourth embodiment will be described. Fig. 11 is a plan view of a cushion material 1c. The cushion material 1c has substantially the same structure as the cushion material 1, but is different in that the cushion material 1c is made up of a plurality of colors.

[0115] As described above, the surface 3 of the cushioning material 1c is divided into three parts: the peaks 5 formed by the resin foam 15b above the linear pattern 11, the linear pattern forming parts 13 where the linear pattern 11 is formed, and the valleys 7 formed by the resin foam 15a below the linear pattern 11. In this embodiment, at least one or two of the peaks 5, the linear pattern forming parts 13, and the valleys 7 are formed in a color different from the other parts.

[0116] For example, the linear pattern forming portion 13 may be colored a different color from the peaks 5 and valleys 7, or only the linear pattern forming portion 13 may be colored, thereby forming a linear pattern 11 colored a different color from the other portions. Also, by coloring either the peaks 5 or the valleys 7 of the wavy uneven structure a different color, a three-dimensional solid pattern in which either the peaks 5 or the valleys 7 are colored can be formed.

[0117] For example, when the linear pattern 11 is formed by a fusion layer, when the surface of the resin foam forming the fusion layer crystallizes in the process of solidifying after melting, the color may be different by changing the crystallinity and molecular orientation, and by superimposing the residual effect of ADCA on the foam surface. Alternatively, the resin foam may be fused using a resin foam having one fusion surface painted in a different color. In this way, the linear pattern forming portion 13 can be colored in a color different from the peak portions 5 and the valley portions 7.

[0118] Furthermore, when the linear pattern 11 is formed by an adhesive layer, the adhesive layer may be formed by using a colored adhesive by adding a pigment to the adhesive that forms the adhesive layer. In this way, the linear pattern forming portion 13 can be colored in a color different from the peaks 5 and the valleys 7.

[0119] In order to manufacture such a cushioning material 1c, for example, resin foam 15a and resin foam 15b of different colors may be used. Resin foam 15a and resin foam 15b of different colors may be bonded together to form laminated resin foam 39, and then, as shown in Fig. 6A, profile processing may be performed to make the color of peaks 5 or valleys 7 different from the color of other portions. That is, in addition to the two-dimensional pattern of linear pattern forming portion 13, each of peaks 5 and valleys 7 of the corrugated uneven structure may be colored in a different color, thereby forming a three-dimensional solid pattern in which each of linear pattern forming portion 13, peaks 5, and valleys 7 is colored in a different color.

[0120] 12A is a plan view of cushion material 1d, and FIG. 12B is a side view of cushion material 1d. Cushion material 1d has a configuration similar to cushion material 1c, but differs from cushion material 1c in that the area of ​​the peaks surrounded by linear pattern 11 is small.

[0121] Similar to cushion material 1c, the surface 3 of cushion material 1d is divided into three portions: peak portions 5 formed by resin foam 15b above linear pattern 11, linear pattern forming portions 13 where linear pattern 11 is formed, and valley portions 7 formed by resin foam 15a below linear pattern 11. Similarly to cushion material 1c, cushion material 1d is also formed in such a way that at least one or two of peak portions 5, linear pattern forming portions 13, and valley portions 7 are formed in a color different from the other portions.

[0122] On the other hand, in the case of cushion material 1d, the slice position during profile processing shown in Fig. 6B is offset upward, or when resin foam 15a and resin foam 15b are used to form laminated resin foam 39, the thickness of upper resin foam 15b is made thicker than that of lower resin foam 15a, thereby making it possible to reduce the area of ​​the peaks surrounded by linear pattern 11. As a result, a cushion material as shown in Fig. 12B is obtained.

[0123] According to the fourth embodiment, the same effect as the first embodiment can be obtained. In addition, by making at least a part of the peaks 5, valleys 7, and linear pattern 11 a different color from the other parts, a higher design can be obtained. In particular, by changing the colors of the peaks 5 and valleys 7 and the relative area ratios, a higher design can be obtained.

[0124] In this case, with the position of the linear pattern 11 as the boundary line, a three-dimensional design can be obtained in which the peaks 5 and valleys 7 (including the bottom) are colored in different colors from the linear pattern 11 when it is not colored.

[0125] Furthermore, by offsetting the slice processing position within the range of the wave shape formed by the adhesive surface or fused surface, the linear pattern 11 can be formed at any height within the range of the wave-shaped uneven structure. For example, by forming the linear pattern 11 on the crest 5 side from the center of the height of the wave-shaped uneven structure, it is possible to form the linear pattern 11 or the pattern of the colored crest 5 small. Also, by forming the linear pattern 11 on the valley 7 side from the center of the height of the wave-shaped uneven structure, it is possible to form the linear pattern 11 or the pattern of the colored crest 5 large. In this way, by changing the colored areas of the crest 5 and valley 7, the design can be changed.

[0126] Fifth embodiment (Connection structure for partitions for evacuation shelters using laminated bodies) FIG. 13 is a diagram showing an evacuation shelter section 50. The structure of the partition for partitioning an evacuation shelter will be described with this. The laminate 1a is an approximately rectangular shape with the long side being twice as long as the short side. The evacuation shelter section 50 is composed of multiple laminates 1a, and has a floor section 52 (disaster mat material) and a wall section 54 (side wall of the partition for partitioning). Two laminates 1a are placed on the floor section 52 with disaster mats that can also be used as beds on the floor surface so that the long sides of the approximately rectangular shapes come into contact with each other to form an approximately square section. Furthermore, with the laminate 1a standing in the short side direction, the long side of the laminate 1a is used as the contact surface with the floor surface, and the vicinity of the end of the short side of the flat surface on the back surface of the laminate 1a and the side end surface of the short side are connected at approximately right angles to each other multiple times so as to surround the outer periphery of the floor portion 52 formed from the disaster relief mat as the approximately square flooring material, thereby forming a connection structure in which the laminate 1a is connected and fixed, forming a wall portion 54, and this connection structure includes at least a section in which a U-shaped side wall with one end open of the approximately square is formed.

[0127] A hook-and-loop fastener is used as a fastening means for forming the connection structure of the partition for partitioning a shelter, but instead of the hook-and-loop fastener, a button-like fastener or a magnet fixed to a tape-like member can be used. The fastening means is attached to the laminate 1a near the end of the short side and at a predetermined position on the side of the end. In the connection structure of the partition for partitioning a shelter of the present invention, since the fastening means is attached to the laminate, a separate fixing part is not required, and the partition can be formed by facing the laminates and abutting or fitting them together, which is the greatest feature. The hook-and-loop fastener is fixed to the laminate by a pressure-sensitive adhesive or adhesive on the back side of the hook-and-loop fastener, and the tape-like member to which the button-like fastener or magnet is attached can be fixed to the laminate by a pressure-sensitive adhesive or adhesive.

[0128] In this case, the end side surface of the short side of the disaster mat is cut in a substantially straight line at a position offset by (1 / 4) pitch from the top of the peak or the bottom of the valley in a direction substantially parallel or perpendicular to the curve passing through the adjacent peaks of the profiled surface in a plan view. This allows a substantially rectangular cut surface to be obtained as the cut surface of the end side surface on the short side. By fixing the fixing means to such an end side surface having a flat, substantially elongated cross section, it becomes possible to fix the fixing means efficiently, and processing of a tape-like fixing means such as a hook-and-loop fastener is not required. In addition, the connection structure of the evacuation shelter compartment may be a connection structure of the evacuation shelter compartment using a cushioning material instead of the laminate.

[0129] In the connection structure of the shelter section 50 of the fifth embodiment, a cushion material 1 with a sheet-like foam attached to the back surface may be used as a partition material instead of the laminate 1a. The cushion material 1 has a ratio R of the height (Hv) from the flat surface of the cushion material 1 to the valley portion and the height (Hc) from the flat surface of the cushion material 1 to the center line height of the valley portion 7a and the peak portion 5a, 60 It is desirable to ensure at least %.

[0130] Here, in the fifth to eighth embodiments, by sacrificing design, a laminate without a linear pattern on the profiled surface can be used instead of the laminate 1a having numerous circular linear patterns between the peaks and valleys, and it is possible to obtain a connection structure for shelter compartments using a laminate that is easy to assemble and disassemble, a method for forming a shelter compartment using a laminate, a method for disassembling and storing a shelter compartment, and a method for forming an impact-buffering wall panel for a shelter compartment, all without using tools or special parts.

[0131] Sixth embodiment (Method of forming partitions for dividing evacuation shelters using laminates) Next, a sixth embodiment will be described. The sixth embodiment will be described with reference to Fig. 13, which is a connection structure for partitions for a shelter using a laminate. Fig. 13 is a diagram showing a shelter section 50. The evacuation shelter section 50 is composed of multiple laminates 1a and has a floor section 52 (disaster mat material) and a wall section 54 (compartment partition side wall). The laminate 1a can be obtained by laminating and bonding or fusing another sheet-shaped resin foam on the surface opposite to the surface of the cushion material 1 on which the corrugated uneven structure is formed. Alternatively, as described above, it can be obtained by using a four-layer laminated resin foam and slicing the second and third layers with a slicing machine. As described above, a multiple-layer cushion material in which another sheet-shaped resin foam is laminated and bonded or fusing on the surface opposite to the surface of the cushion material 1 on which the corrugated uneven structure is formed is called a laminate.

[0132] Next, a method for forming the evacuation shelter section 50 shown in FIG. 13 will be described. The laminate 1a used in the structure of this evacuation shelter section 50 is, for example, a resin foam sheet having a substantially rectangular shape with a long side length of 1800 mm × short side length of 880 mm × thickness of 30 mm (average thickness is 25 mm). That is, the laminate 1a is a substantially rectangular shape with the long side length being twice as long as the short side. A corrugated uneven structure having a linear pattern is formed on one surface of the laminate 1a, and a flat surface is formed on the other surface. A resin foam having an expansion ratio of 20 to 40 times is used for the laminate 1a. For example, when the expansion ratio is 30 times, the weight of the laminate is about 1.25 kg. Even when the expansion ratio is 20 times, the weight is about 1.9 kg, which is 2 kg or less. In addition, although an average thickness of up to 50 mm is allowed, considering the storage ability in normal times other than disasters, the thickness of the laminate is preferably thin, and 40 mm or less is sufficient. Therefore, the weight of the laminate is at most 5 kg or less and does not exceed 4 kg.

[0133] First, the floor 52 of the evacuation shelter section 50 is formed. The floor 52 can be formed on the floor by arranging the flat or uneven surfaces of the multiple laminates 1a side by side toward the floor. By arranging the long sides of two laminates 1a side by side, a substantially square floor 52 is formed, and a floor 52 with an area of ​​about 2 tatami mats is formed. That is, the laminates 1a are arranged on the floor as disaster mats that can also be used as beds, so that the long sides of the substantially rectangular shape are brought into contact with each other to form a substantially square section. Here, the laminates 1a form the floor 52 that has cushioning properties and is excellent in moisture resistance and heat insulation.

[0134] Next, walls 54 for dividing the evacuation shelter section 50 are formed on the floor 52. The walls 54 are arranged so as to surround three sides of a roughly square area of ​​about two tatami mats formed by the two laminates 1a. That is, with the laminate 1a erected in the short side direction, the long sides of the laminate 1a are in contact with the disaster mat, and the ends of the short sides are connected to each other at roughly right angles, so as to surround the periphery of the disaster mat that can also be used as a bed as a roughly square flooring material.

[0135] More specifically, the laminate 1a is first erected on the floor 52 so that the long side of the laminate 1a is in contact with the floor 52 having a substantially square shape. The short sides of the three laminates 1a erected on the floor 52 are sequentially connected at substantially right angles to each other to form a substantially U-shaped wall 54 with one side of the substantially square compartment open. In this way, by using the laminate 1a as a partition for partitioning, a shelter compartment 50 can be formed, which is one section of a shelter, in which a substantially square compartment is partitioned by forming a U-shaped side wall with one side open. At this time, the end side surface on the short side of the disaster mat is cut in a substantially straight line at a position shifted by (1 / 4) pitch from the top of the mountain or the bottom of the valley in either a direction substantially parallel or substantially perpendicular in plan view to the curve passing through the adjacent mountain parts and mountain parts of the profiled surface. This allows a substantially rectangular cut surface to be obtained as the cut surface of the end side surface on the short side. By obtaining an end side surface of this type of laminate, it becomes possible to efficiently attach a tape-like material having a hook-and-loop fastener or fixing means attached to the end side surface of the laminate, eliminating the need for processing to fit the end side surface of the tape-like material.

[0136] The thus obtained approximately square-shaped section surrounded by the laminate 1a on three sides is used as a basic section to form a first section. Next, a second section having an approximately square shape is formed adjacent to the first section. More specifically, the floor part 52 of the second section is formed in the same manner as the first section, continuing from the floor part 52 of the first section. That is, adjacent to the disaster mat that can also be used as a bed as a floor material for the first section, a disaster mat that can also be used as a bed as a floor material for the second section of a similar size to that of the approximately square shape is formed using the laminate 1a. Next, a U-shaped wall part 54 that opens in the opposite direction to the first section is arranged to form the second section. In this way, at least two U-shaped sections can be formed by forming a U-shaped side wall as the second section, which is continuous with the first section formed in a U-shape, opens in the opposite direction to the first section, and shares one end piece of the U-shape, using the laminate 1a.

[0137] Next, similarly to the first and second compartments, a floor 52 of a third compartment is formed adjacent to the second compartment, and then a U-shaped wall 54 opening in the opposite direction to the second compartment is arranged to form the third compartment. That is, the openings of the approximately square compartments are formed in a U-shape so that the opening directions are sequentially opened in the opposite direction, the side walls of the compartments are sequentially repeatedly formed, and disaster mats that can be used as beds as approximately square flooring corresponding to these side walls are repeatedly formed, thereby forming a large number of compartments.

[0138] In this way, a substantially square-shaped floor 52 is formed, and the long sides of the laminate 1a are brought into contact with the floor 52 to form the walls 54, thereby forming a substantially U-shaped compartment. In this case, the walls 54 are formed in a continuous U-shape so as to open in opposite directions between adjacent compartments, forming a compartment partition, thereby forming a shelter compartment 50 including at least two or three substantially square compartments.

[0139] Furthermore, a plurality of substantially square floor sections 52 may be formed adjacent to each other, and the wall sections 54 may be formed in a U-shape so that the opening directions of the adjacent floor sections 52 face in opposite directions. In this manner, a shelter section 50 in which multiple sections are arranged in succession can be formed.

[0140] In this forming method, the flat surface of the laminate 1a may be placed facing the floor surface. That is, as a floor material, either the flat surface or the corrugated uneven structure surface of the laminate 1a may be placed facing the floor surface. Also, the U-shaped wall portion 54 formed by the laminate 1a may be arranged so that the corrugated uneven structure surface, which is the pattern forming surface of the laminate 1a, and the flat surface on the opposite side are alternately arranged. For example, the corrugated uneven structure surface, which is the pattern forming surface of the laminate 1a of the laminate 1a, may be alternately arranged in the order of outward, inward, and outward along each side of the section, or alternately arranged in the order of inward, outward, and inward, to form the evacuation shelter section 50, with respect to the side wall portion arranged in the U-shape formed by the laminate 1a. By arranging in this way, the design of the evacuation shelter can be improved. At the same time, it can be made to have excellent soundproofing, moisture resistance, and heat insulation. Therefore, the evacuation shelter user can spend a comfortable time in the designated section. As described above, when forming the compartments, the direction in which the corrugated uneven surface is oriented along each side of the compartment may be appropriately selected in consideration of the design.

[0141] In addition, when assembling the laminate 1a as a partition for a compartment, the laminate 1a may be connected to itself by a hook-and-loop fastener having a large number of micro-projections attached to the surface of the laminate 1a. In this way, the laminate 1a can be easily connected to itself by a hook-and-loop fastener, so that the evacuation shelter compartment 50 can be easily assembled. In addition, the laminate 1a is lightweight, for example, about 1.5 kg per sheet, so that it is easy to transport and move when assembled. In addition, the laminate 1a for the evacuation shelter compartment 50 is made by laminating another sheet-shaped resin foam on the surface opposite to the corrugated uneven structure of one cushion material 1 having a pattern on its surface, so that it is easy to assemble and self-support when used as a wall portion 54.

[0142] Here, excellent self-supporting assembly ability means that when the laminates 1a are fastened together, for example with hook-and-loop fasteners, to form the shelter section 50 using the laminates 1a, the center of gravity of the laminates 1a is stable even at the opposite end face other than the part fastened with the hook-and-loop fastener, so that the upper part of the short side of the upright laminates 1a can be assembled in a self-supporting manner without tilting or bending.

[0143] When connecting the laminates 1a, it is preferable to connect the end of the flat surface of one laminate 1a in the width direction to the end surface of the other laminate 1a by contacting them with a hook-and-loop fastener. For example, the hook-and-loop fastener is attached to a predetermined position from the upper end to the lower end in the long side direction of the flat surface of the laminate 1a, or to a predetermined position from above to below the part corresponding to the flat portion of the end surface of the laminate. More specifically, it is preferable that the hook-and-loop fastener is attached to at least three places in the height direction, namely, the upper, middle, and lower parts.

[0144] For example, hook-and-loop fasteners are attached to one laminate 1a at predetermined positions on the upper end, middle part and lower end of the flat surface of the laminate 1a in the width direction, and hook-and-loop fasteners are attached to the other laminate 1a at predetermined positions on the upper, middle and lower end of the end surface. Here, the fastening positions of fastening means such as hook-and-loop fasteners may be as described above, but they may also be evenly spaced from the upper end to the lower end, and there is no problem as long as the laminates can be stably connected and supported.

[0145] If the affixing positions of the hook-and-loop fasteners of one laminate 1a and the other laminate 1a correspond to each other, the laminates 1a can be connected by facing the hook-and-loop fastener affixed to the flat surface of one laminate 1a and the hook-and-loop fastener affixed to the end surface of the other laminate 1a to each other. In this way, the two are connected by facing the hook-and-loop fastener affixed to a predetermined position on the flat surface and the hook-and-loop fastener affixed to the end surface to each other. In this case, if the laminate 1a with excellent self-assembly properties is used, unnecessary gaps will not occur in the assembled partition, and the assembly will be excellent.

[0146] Here, hook-and-loop fasteners have been used as the fastening means for forming partitions for dividing evacuation shelters, but button-shaped fasteners or magnets fixed to tape-shaped members can be used instead of hook-and-loop fasteners. The effect is the same as that of the connection structure for partitions for dividing evacuation shelters. The hook-and-loop fasteners are fixed to the laminated body by a pressure-sensitive adhesive or adhesive on the back side, and the tape-shaped members to which button-shaped fasteners or magnets are attached can be fixed to the laminated body by a pressure-sensitive adhesive or adhesive.

[0147] In addition, as described in detail later, in the laminate 1a having excellent self-assembly properties, the ratio of the height (Hv) from the flat surface of the laminate 1a to the valley portion 7a and the height (Hc) from the flat surface of the laminate 1a to the center line height of the valley portion 7a and the peak portion 5a is preferably 50% or more, and more preferably 60% or more.

[0148] In the method for forming the evacuation shelter section 50, a cushion material 1 having a wavy uneven structure with a linear pattern formed on its surface may be used as the section partition material instead of the laminate 1a. Similarly, in order to make the cushion material 1 excellent in self-supporting assembly ability, it is desirable that the ratio of the height (Hv) from the flat surface of the cushion material 1 to the valley portion and the height (Hc) from the flat surface of the cushion material 1 to the center line height of the valley portion 7a and the peak portion 5a is 50% or more.

[0149] (Relationship between cutting position of laminate and cross-sectional shape of cut end side surface) Now, in the fifth to seventh embodiments, looking at the cut surface of the laminate 1a to which the fixing means is bonded, Figs. 14A to 14C show the relationship between the cut position of the laminate and the cross-sectional shape of the cut end side surface. Fig. 14A shows the cut position as seen from the profiled surface of the laminate. Fig. 14B shows a cut surface (cut surface 71 connecting the crests) when cut on a curve that alternately passes through the crests and the bottoms of the valleys. Fig. 14C shows a cut surface (cut surface 70 connecting the inflection points) when cut so as to linearly connect inflection points located (1 / 4) pitch away from the crests and the bottoms of the valleys.

[0150] When the laminate 1a is cut in an approximately straight line along the curve that alternately passes through the crests and the bottoms of the valleys along line XX in Fig. 14A, the unevenness of the cut surface is the largest, and the cross-sectional area of ​​the parallel portion of the end surface of the laminate is the smallest, as shown in Fig. 14B. In contrast, when the laminate 1a is cut in an approximately straight line along the curve that alternately passes through the crests and the bottoms of the valleys, connecting inflection points that are shifted by (1 / 4) pitch in either a direction that is approximately parallel or approximately perpendicular in a plan view, the unevenness of the cut surface is the smallest, an approximately elongated cut surface is obtained, and the cross-sectional area of ​​the parallel portion of the end surface of the laminate is the largest. For example, when the laminate is cut along line YY in Fig. 14A, the unevenness of the cut surface is the smallest, an approximately elongated cut surface is obtained, and the cross-sectional area of ​​the parallel portion of the end surface of the laminate is the largest, as shown in Fig. 14C. In this case, when the adhesive layer or fusion layer, which is the boundary between the resin foam 15a and the resin foam 15b forming the peaks and valleys, coincides with the inflection point of the curve extending from the peaks of the peaks to the bottoms of the valleys on the profiled surface, a periodic linear pattern of a predetermined length is formed at the upper end of the cut, approximately parallel cross section. If the linear pattern is formed at a position shifted either above or below the inflection point, the linear pattern does not appear on the cut surface. Here, when the line connecting the peaks of the peaks and the bottoms of the valleys is linear rather than curved, a cut surface of approximately rectangular shape similar to that in the case of having an inflection point can be obtained, and similar behavior was confirmed.

[0151] In addition, the peaks and valleys of this profiled surface have the same periodic structure in mutually orthogonal directions, so that it is possible to cut in a substantially straight line connecting the inflection points between the peaks and valley bottoms in two orthogonal directions that are substantially parallel or substantially perpendicular in plan view, or between the valley bottoms and the peaks. More precisely, when considering the periodic structure of the peaks and valleys, if the distance from the peaks to the peaks or from the valley bottoms to the valley bottoms on the profiled surface is taken as one pitch, it can be understood from the drawing showing the cutting positions in FIG. 14A that such inflection points are periodically located at positions of (1 / 4), (3 / 4), and (5 / 4) pitches. More precisely, it is possible to cut every (2N+1) / 4 (N: natural number) pitch. It is also possible to cut in the same direction between line XX in FIG. 14A and line YY in FIG. 14B. In this case, the cut surface has smaller unevenness than the cut surface cut along the XX line in Fig. 14A, but has unevenness. In this case, when the cutting position is close to the XX line, the unevenness becomes close to that when cut along the XX line, and when the cutting position is close to the YY line, the unevenness becomes close to that when cut along the YY line, resulting in a nearly flat surface. However, such a cutting method is also possible if necessary.

[0152] The area of ​​the flat portion to which the fastening means is bonded varies depending on the cutting position of the laminate. Therefore, by selecting the cross section with the largest parallel area on the side end face and using that section as the cutting site, the area to which the fastening means such as a hook-and-loop fastener is bonded can be maximized. By cutting to a position that is shifted by (1 / 4) pitch from the line connecting the crest and valley bottom, and the valley bottom and crest, that is, to connect the inflection point of the curve connecting the crest and valley, the narrow portion of the width of the side end face, which is the periodic uneven structure of the cut side end face, can be reduced, and the side end face can be formed into a substantially rectangular shape with the largest parallel area on the side end face. This makes it possible to maximize the width of the tape-like member of the fastening means to be bonded to the side end face, and therefore to obtain a strong connection structure.

[0153] Seventh embodiment (How to disassemble and store evacuation shelter sections) Next, a method for disassembling and storing the evacuation shelter section will be described. Figures 15A and 15B are diagrams showing the stored state of the evacuation shelter section 50 formed by the above-mentioned method, with Figure 15A being a front view and Figure 15B being a plan view. When storing the evacuation shelter section 50, the end face of the laminated body 1a is fixed and stored in the wall surface 51.

[0154] In order to disassemble and store the evacuation shelter section 50, first, the laminate 1a forming the evacuation shelter section 50 is disassembled. After disassembling the laminate 1a, one laminate 1a is placed with its flat surface facing the wall surface 51 and fixed to the wall surface 51. There are other fixing means used for fixing at this time, but here, the case of a hook-and-loop fastener 53 will be described. A hook-and-loop fastener 53d is placed at a predetermined position on both sides of the flat surface of the laminate 1a, and a hook-and-loop fastener 53c is placed at a position on the wall surface 51 corresponding to the position of the hook-and-loop fastener 53d. Therefore, the laminate 1a can be fixed to the wall surface 51 by the hook-and-loop fasteners 53c and 53d. That is, the hook-and-loop fastener 53d of the first laminate 1a is brought into contact with the hook-and-loop fastener 53d of the wall surface 51, thereby fixing the laminate 1a upright to the wall surface 51.

[0155] Furthermore, the corrugated concave-convex structure surface of the second laminate 1a is placed on the corrugated concave-convex structure surface on the back side of the flat surface of the laminate 1a fixed to the wall surface 51, and the end surfaces of the first laminate 1a are aligned to form a stack of two laminates. After that, the third and fourth laminates 1a, which are new laminates 1a, are erected with the flat surface and the corrugated concave-convex structure surface, which are the respective laminate surfaces, aligned with the respective laminate surfaces and end surfaces in the same order as in the first and second laminates 1a. That is, the flat surfaces and the corrugated concave-convex structure surfaces are opposed to each other in sequence, and the respective end surfaces are aligned and repeatedly erected.

[0156] Further, the laminate 1a is stacked in the same manner. Depending on the number of laminates 1a to be stacked, when the number of laminates 1a to be stacked is an odd number, the final stacked surface is a flat surface and the outermost surface is a corrugated uneven surface, and when the number of laminates 1a to be stacked is an even number, the final stacked surface is a corrugated uneven surface and the outermost surface is a flat surface. In this manner, the laminates are stacked in sequence and repeatedly to be erected.

[0157] Here, hook and loop fasteners 53c are attached to predetermined positions on the end faces of the laminate 1a. Therefore, by arranging another hook and loop fastener 53b having a length corresponding to the total thickness of the stacked laminates 1a so as to span the hook and loop fasteners 53a on the end faces of each of the erected laminates 1a, it is possible to collectively fasten the end faces of all of the laminates 1a.

[0158] Here, the hook-and-loop fastener has been used as the fastening means used in the method for disassembling and storing a partition for a partition of a shelter, but a button-shaped fastener or a magnet fixed to a tape-shaped member can be used instead of the hook-and-loop fastener. In the method for disassembling and storing a partition for a partition of a shelter, the partition for a shelter can be easily disassembled and stored by using a button-shaped fastener or a magnet fixed to a tape-shaped member as the fastening means. The hook-and-loop fastener can be fixed to the laminate by using a pressure-sensitive adhesive or adhesive on the back side thereof, and the tape-shaped member to which the button-shaped fastener or the magnet is attached can be fixed to the laminate by a pressure-sensitive adhesive or adhesive. In this case, it goes without saying that the fastening means used in the method for disassembling and storing a partition for a partition of a shelter is the same as the fastening means used in assembling the laminate used in assembling the shelter.

[0159] In this manner, the laminate 1a used in the evacuation shelter section 50 can be disassembled and stored. At this time, the laminate 1a can be compactly stored by arranging the surface of the wavy uneven structure on which the linear pattern is formed on the surface of the laminate 1a as the outermost surface. At this time, the end surface shape of the laminate 1a is such that the end surface of the laminate 1a to be attached and fixed during assembly is cut in a substantially straight line at a position shifted by (1 / 4) pitch from the top of the peak or the bottom of the valley in either a direction substantially parallel or substantially perpendicular to the curve passing through the adjacent peaks of the profiled surface as described above, in a plan view. This allows a substantially rectangular cut surface to be obtained as the cut surface of the end side surface on the short side. By obtaining the end side surface of the laminate having such a shape, it becomes possible to efficiently attach a hook-and-loop fastener or a tape-like member to which a fixing means is attached to the end side surface of the laminate, and processing to match the end side surface of the tape-like member is not required.

[0160] In the above-described method for disassembling and storing an evacuation shelter section, a cushioning material 1 having a corrugated uneven structure with a linear pattern formed on its surface may be used in place of the laminated body 1a.

[0161] Eighth embodiment (Method of forming impact-absorbing wall panels for evacuation shelter areas) 16A and 16B are diagrams showing the shock-absorbing wall panel 60 of the shelter section, where 16A is a front view, 16B is a plan view, and 16C is an enlarged view of the vicinity of the hook-and-loop fasteners 53c and 53d in 16B. The method for forming the shock-absorbing wall panel 60 is as follows. First, as described above, the shelter section 50 formed in the method for forming a shelter section using the laminate 1a is disassembled. Here, too, hook-and-loop fasteners are used as the fastening means as in the above case.

[0162] Next, the flat surface of the disassembled laminate 1a is placed facing the wall surface 51. At this time, hook and loop fasteners 53d are placed at predetermined positions on both sides of the flat surface of the laminate 1a, and hook and loop fasteners 53c are placed at predetermined positions on the wall surface 51 corresponding to the positions of the hook and loop fasteners 53d. That is, when the short sides of the laminate 1a are continuously placed as upright surfaces parallel to the wall surface 51, the hook and loop fasteners 53c are placed at predetermined positions on the wall surface 51 corresponding to the positions of the hook and loop fasteners 53d on the flat surface of the laminate 1a. Therefore, the laminate 1a can be fixed to the wall surface 51 with the uneven surface facing the room side by the hook and loop fasteners 53c and 53d.

[0163] Furthermore, another laminate 1a is arranged with its flat surface facing the wall surface 51, and its corrugated uneven structure surface facing the room side so as to be continuous with the first laminate 1a, and is fixed to the wall surface 51 with hook-and-loop fasteners 53c arranged at predetermined positions on the wall surface 51. Furthermore, by fixing the laminate 1a to the wall surface 51 so as to be continuous with the laminate 1a fixed to the wall surface 51 immediately before, it is possible to form an impact buffer wall panel 60 for the evacuation shelter section. In this way, in this embodiment, when the laminate 1a is not used as the floor 52 or wall 54 of the evacuation shelter section 50 or as a partition, it is possible to form an impact buffer wall panel 60 of a predetermined size and excellent design on the wall surface 51 by fixing the uneven surface of the laminate 1a to the wall surface 51 so as to be continuous with the laminate 1a fixed to the wall surface 51 immediately before.

[0164] Instead of the laminate 1a, a cushioning material 1 having a corrugated uneven structure with a linear pattern formed on the surface may be used. Even in this case, the cushioning material 1 constituting the evacuation shelter section 50 can be disassembled to form the shock absorbing wall panel 60. In this way, the laminate 1a can be used as a disaster mat material that can be used for the side walls of partitions for evacuation shelters or for beds in the event of a disaster, and can be used as a shock absorbing wall panel material in normal times.

[0165] Here, the fastening means used in the method for forming the shock-absorbing wall panel for the evacuation shelter section has been described using a hook-and-loop fastener, but a button-shaped fastener or a magnet fixed to a tape-shaped member can be used instead of the hook-and-loop fastener. Note that the same fastening means can also be used as the fastening means in the method for forming the shock-absorbing wall panel for the evacuation shelter section. The hook-and-loop fastener can be fixed to the laminate by fixing the back side of the hook-and-loop fastener with a pressure-sensitive adhesive or adhesive, and the tape-shaped member to which the button-shaped fastener or magnet is attached can be fixed to the laminate by a pressure-sensitive adhesive or adhesive. In this case, it goes without saying that the fastening means used in the method for forming the shock-absorbing wall panel for the evacuation shelter section is the same as the fastening means used in assembling the laminate to be used in assembling the evacuation shelter section. EXAMPLES

[0166] (Evaluation by an evaluation test of the self-supporting assembly of the laminate) A side wall partition (wall portion 54) made of a plurality of laminates 1a joined by hook-and-loop fasteners needs to have cushioning properties, and therefore the laminates 1a used therein do not necessarily have high rigidity. For this reason, a test was conducted to confirm the self-supporting ability of the side wall partition during assembly work. Fig. 17 is a diagram showing an explanatory diagram of the assembly self-supporting ability test of the partition partition, and Fig. 18A is a diagram showing the dimensions of each part of the laminates 1a used in the assembly self-supporting ability evaluation of the partition partition.

[0167] To evaluate the self-supporting ability during assembly work, two laminates 1a', 1a'' were created, simulating a side wall partition, with the long side length direction of laminate 1a (I in the figure) being 1800 mm and the height direction (J in the figure: short side direction) being 880 mm. The two cut laminates 1a', 1a'' were placed perpendicular to each other, with the long sides of the laminates 1a', 1a'' lying horizontally and in contact with the floor surface.

[0168] As shown in FIG. 17, the end of the flat surface of one laminate 1a' in the length direction and the side end surface of the other laminate 1a'' in the length direction are mutually connected by hook-and-loop fasteners. The laminates 1a', 1a'' are connected at three positions in the height direction, at an upper hook-and-loop fastener attachment portion 61a, a middle hook-and-loop fastener attachment portion 61b, and a lower hook-and-loop fastener attachment portion 61c. That is, hook-and-loop fasteners are attached to the end of the flat surface of the laminate 1a' in the length direction at the upper, middle, and lower parts in the height direction of one laminate 1a'. Moreover, hook-and-loop fasteners are attached to the side end surface of the laminate 1a'' in the length direction at predetermined positions at the upper, middle, and lower parts in the height direction of the other laminate 1a''.

[0169] A hook-and-loop fastener attached to the flat surface of one laminate 1a' and a hook-and-loop fastener attached to the side end surface of the other laminate 1a'' are connected facing each other to create a connection structure in which the laminates are connected perpendicular to each other. Using this connection structure of the laminates, the self-supporting assembly was evaluated. The laminates used were cut linearly at a position shifted by a pitch of (1 / 4) from the maximum position of the surface unevenness, which is the curve connecting the peaks of the profiled surface of the laminate, in a plan view, so that the side end surfaces of the laminate can have approximately parallel cut surfaces corresponding to the sheet thickness before profile processing. Here, the average thickness of the laminates used in the examples is 20 mm to 30 mm. The laminates used in the examples were cut so as to obtain approximately parallel cut surfaces of a thickness corresponding to the average thickness of the laminate, so that hook-and-loop fasteners with dimensions of 150 mm x 20 mm can be attached to the end surfaces of the laminate without any problems, and the support force of the hook-and-loop fasteners can be effectively utilized.

[0170] The laminate 1a used in the test was formed by slicing a polyethylene foam sheet with a foaming ratio of 40 times using a profile processing machine. In this case, in order to evaluate the effect of the dimensions of the corrugated uneven structure on the surface of the laminate on the self-supporting assembly, laminates of various dimensions and shapes were created in which the ratio of the thickness of the corrugated uneven structure parts such as flat parts and peaks and valleys in the thickness direction of the laminate to the total thickness was different. The laminates thus obtained, which have a corrugated uneven structure, a periodic linear pattern formed on the surface, and a sheet-shaped resin foam laminated on the back side, were used as test materials to evaluate the self-supporting assembly. The results of the evaluation of the self-supporting assembly are shown in Tables 1 and 2.

[0171] [Table 1]

[0172] [Table 2]

[0173] In Tables 1 and 2, the height (Hm) from the flat surface to the peaks corresponds to the sheet thickness (maximum thickness) of the laminate, as shown in FIG. 18A. The height (Hm) from the flat surface to the peaks corresponds to the sum of the thickness of the sheet foam and the height of the cushioning material to the peaks. Also, the height (Hv) from the flat surface to the valleys corresponds to the thickness (minimum thickness) of the laminate at the bottom of the valleys 7a, as shown in FIG. 18A. The height (Hv) from the flat surface to the valleys corresponds to the sum of the thickness of the sheet foam and the height of the cushioning material to the valleys. Also, the height (Hc) from the flat surface of the laminate to the center line of the corrugated uneven structure is the distance between the center line K between the top of the peaks 5a and the bottom of the valleys 7a and the flat surface on the back side of the laminate, as shown in FIG. 18A. That is, it is calculated as Hc=Hv+(Hm-Hv) / 2=(Hm+Hv) / 2. Moreover, the wave shape processing height (half-value width of the uneven structure) in Tables 1 and 2 corresponds to (Hm-Hv) / 2.

[0174] In addition, in Tables 1 and 2, the evaluation of self-supporting assembly was performed as follows: in the laminate connection structure shown in FIG. 17, those that did not have any bending or curvature at the top end of the width direction end opposite the hook-and-loop fastener connection were rated as "good", and those that had slight bending or curvature of about 2-3 mm at the top end were rated as "not enough". In other words, a laminate that did not have any bending or curvature at the end opposite the hook-and-loop fastener connection was judged to have excellent self-supporting assembly. In this way, if a laminate with excellent self-supporting assembly is used, unnecessary gaps will not be generated in the assembled partition, and the assembly will also be excellent.

[0175] As can be seen from Tables 1 and 2, the ratio of the height from the flat surface on the back side of the laminate to the height from the valleys (Hv) to the center line height (Hc) of the corrugated concave-convex structure surface, expressed as a percentage, is R, and the relationship between the self-supporting ability and R was evaluated for the following test materials. In Tables 1 and 2, test materials 1 to 4 show the case where the peak height of the laminate is constant at 40 mm, and the value of R is changed from 44% to 62% by changing the corrugation height. Test materials 5 to 8, test materials 9 to 11, and test materials 12 to 15 are examples of test materials in which the average thickness of the laminate is constant at 30 mm, 25 mm, and 20 mm, respectively, and the corrugation height (half-value width of the concave-convex structure) is appropriately changed. Here, as mentioned above, those that had very slight deformation were evaluated as "not enough," those that had no problem with self-supporting ability were evaluated as "good," and those that were considered to be able to prevent a decrease in self-supporting ability even after long-term storage were evaluated as "excellent."

[0176] In the above-mentioned laminates, the average height of the laminates is in the range of 20 mm to 30 mm, and the corrugation height is varied. In the test materials 1, 5, and 12, which have R of 50% or less, slight bending or warping occurs. However, when R is 50% or more, it was confirmed that a laminate excellent in assembly self-supporting property can be obtained without such slight bending or warping. In addition, when the foam is used in an evacuation shelter, it is preferable that R is 60% or more, considering the deterioration of assembly self-supporting property due to a slight decrease in strength over time during storage, since it is stored for a long period of time. Note that, instead of a hook-and-loop fastener, a button-shaped fastener or a magnet fixed to a tape-shaped member may be attached to the laminate. A similar confirmation was performed using a button-shaped fastener or a magnet as a fastening means, and the same results were obtained in this case.

[0177] The reason for this is considered as follows. The cross-sectional area of ​​the peak region above the center line K is equal to the cross-sectional area of ​​the valley region below the center line K. Here, the peaks 5a are shifted toward the valleys 7a and inverted to consider an imaginary sheet-like foam having a thickness of the center line height (Hc) of the corrugated uneven structure surface from the flat surface that is the back surface of the laminate (see Fig. 18B and Fig. 18C). In this case, since the volume of the peaks 5a and the volume of the valleys 7a are equal, the position of the center of gravity of the laminate (L in Fig. 18C) is considered to be approximately equal to the center line of the imaginary sheet-like foam. This can be easily understood from the fact that two pieces of foam obtained by slicing the sheet-like foam by profile processing at the center of the sheet thickness have approximately the same weight. In this case, if the above-mentioned condition of R being 50% or more can be satisfied, the position of the center of gravity will be located on the flat surface side rather than the valleys 7a of the end surface of the laminate, and the laminate will be stable. Here, it is more preferable to satisfy the condition of 60% or more to make the foam more stable.

[0178] As can be seen from the above results of the confirmation test for the self-supporting assembly of a polyethylene foam sheet with a foaming ratio of 40 times, if a harder material or a material with a foaming ratio of 40 times or less is used, the self-supporting assembly will be superior to this material. Therefore, when a resin foam with a foaming ratio of 40 times or less is used, the ratio of the height (Hv) from the flat surface of the sheet foam on the back side of the laminate to the valley part of the laminate, and the height (Hc) from the flat surface of the sheet foam on the back side of the laminate to the center line height of the corrugated uneven structure surface, expressed as a percentage, is: 60 % or more is used, there is no problem with self-supporting assembly. In addition, this laminate is lightweight, and a compartment partition with excellent design can be easily assembled.

[0179] Here, in the laminate 1a in which another sheet-like foam is attached to the back side of the cushion material 1 having a corrugated uneven structure on the surface, a resin foam harder than the cushion material 1 may be used as the sheet-like foam provided on the back side. Even in this case, the self-supporting assembly is improved by slightly shifting the center of gravity of the laminate to the hard sheet-like foam side. Therefore, a more stable state can be obtained as long as the laminate satisfies at least the same relationship as when it is made of the same material.

[0180] Instead of the laminate 1a, a cushioning material 1 may be used. In this case, the cushioning material 1 has a height Hv from the flat surface to the valleys and a center line height Hc from the flat surface of the back surface of the cushioning material 1 to the wave-shaped uneven structure surface, and the ratio R is expressed as a percentage. 60 %, even if the cushion material does not have a sheet-like foam on the back surface, it can obtain the same self-supporting assembly properties as the laminate 1a.

[0181] Although the embodiments of the present invention have been described above with reference to the attached drawings, the technical scope of the present invention is not limited to the above-described embodiments. It is clear to those skilled in the art that various modifications or alterations may be made within the scope of the technical ideas described in the claims, and it is understood that these also belong to the technical scope of the present invention. For example, it goes without saying that the above-described embodiments can be combined with each other. [Explanation of symbols]

[0182] 1, 1c, 1d………Cushioning material 3……Surface 5, 5a, 5b………Yamabe 7, 7a, 7b……Tanibe 9……Back side 11...Linear pattern 13... Linear pattern forming section 15a, 15b, 15c, 15d...Resin foam 17, 17a, 17b……adhesive layer 20...Resin foam manufacturing equipment 21....Extrusion machine 23...Roll forming machine 25……Heating furnace 27... Winding machine 31a, 31b………Roll 33………Convex part 35...Concave 37……cutting blade 39...Laminated resin foam 1a, 1b, 1a', 1a''...Laminate 40, 40a…Laminated structure 50.... Evacuation shelter area 51………Wall 52......floor part 53a, 53b, 53c, 53d………Velcro 54……Wall part 60………Shock absorbing wall panel 61a, 61b, 61c... Hook-and-loop fastener attachment portion 70: Cutting surface connecting the inflection points 71: Cutting surface connecting the tops of the peaks

Claims

1. A cushioning material having one surface which has a profiled surface having a wavy uneven structure in which peaks and valleys are alternately and periodically arranged lengthwise and widthwise, and the other surface which is flat, or a laminate in which a sheet-like resin foam made of another polyolefin resin is laminated and adhered or fused to the other flat surface on the back side of the surface of the cushioning material on which the wavy uneven structure is formed, Both the cushioning material and the laminate have a generally rectangular shape in a plan view, the cushioning material or the laminate is cut into a substantially rectangular cut surface so that a cross-sectional area of ​​a parallel portion of the cut surface of the cushioning material or the laminate is maximized; A cushioning material or a laminate, characterized in that a fixing means is attached as a connecting member to a cut surface at a side end surface on a short side of the cushioning material or the laminate, the cut surface being cut into a substantially rectangular shape so that a cross-sectional area of ​​a parallel portion occupying a cut surface of the cushioning material or the laminate is maximized.

2. The cushioning material or laminate according to claim 1, characterized in that the raw material resin of the resin foam constituting the cushioning material or the laminate is at least one of polyethylene, low-density polyethylene, high-density polyethylene, ethylene-vinyl acetate copolymer, or polypropylene resin, or a mixture of two or more of these.

3. The cushioning material or laminate according to claim 1 or 2, characterized in that the resin foam constituting the cushioning material or the laminate is a polyethylene resin foam, the polyethylene resin foam has a closed cell structure with an expansion ratio of 20 to 40 times, and further has a compression set of 3.0% to 7.4% and a compressive stress of 34 kPa to 56 kPa at 25% compression at a test temperature of 25°C based on JIS K6767.

4. 4. The cushioning material or laminate according to any one of claims 1 to 3, wherein the resin foam constituting the cushioning material or the laminate contains any one of silica, zirconium phosphate, zeolite, zinc sulfate, or zirconium sulfate as a deodorant agent, or amorphous calcium phosphate particles having silver ions adsorbed thereon as an antibacterial or antiviral agent, or titanium oxide particles with an anatase crystal structure having photocatalytic activity, antibacterial metal compound particles of silver, copper, or zinc, or metal fine particles of silver, copper, or zinc, in an amount in a range of 0.5 parts by mass to 10 parts by mass per 100 parts by mass of the resin component.

5. 5. The cushioning material or laminate according to claim 1, wherein an adhesive layer is formed on a laminate surface of the resin foam constituting the cushioning material or the laminate, and vibration-damping properties are imparted by using an adhesive containing, as a main component, at least one flexible resin selected from the group consisting of urethane resin, vinyl acetate emulsion, acrylic resin, silicone resin and modified silicone resin for the adhesive layer, or flame retardancy or vibration-damping properties are imparted by using an adhesive containing, as essential components, an acrylic acid ester polymer, a halogen-containing phosphate ester and an inorganic flame retardant.

6. a fusion layer or adhesive layer of the cushioning material or the laminate is a fusion layer, and the fusion layer formed approximately parallel to the other surface is exposed at a portion of a predetermined height on the surface of the wavy uneven structure, forming a number of annular linear patterns spaced apart from each other at a predetermined interval, and the linear patterns are formed at a predetermined height between the peaks and the valleys of the wavy uneven structure so as to separate the peaks and the valleys and surround each of the peaks, The cushioning material or laminate according to any one of claims 1 to 4, characterized in that the fusion layer is selectively formed in a different color by combining changes in crystallinity and molecular orientation when the surface of the resin foam forming the fusion layer crystallizes in the process of melting and then solidifying during fusion, in addition to the residual effect of ADCA on the foam surface.

7. The cushioning material or laminate according to claim 6, characterized in that a linear pattern is formed on the cushioning material or laminate by a fusion layer, the linear pattern on the cushioning material or laminate is colored yellow, and a three-dimensional pattern is formed in which at least one of the peak side and the valley side of the linear pattern having a wavy uneven structure is colored a different color.

8. 8. The method for using the cushioning material or laminate according to claim 1, wherein the cushioning material or laminate is a substantially rectangular shape with the long sides being approximately twice as long as the short sides, and a ratio R of an average height Hc equivalent to the center line height of the wave-shaped uneven structure of the profiled surface from the flat surface of the back surface of the cushioning material or laminate to a height Hv from the flat surface of the back surface of the cushioning material or laminate to the valley portions of the profiled surface satisfies 60% or more, thereby providing excellent self-supporting assembly when used in an upright position, when the cushioning material or laminate is used with the long sides as a ground contact surface and the short sides as an upright surface, and one of the short sides is fixed and supported in an upright position. Here, the average height Hc of the profile-processed surface is the average height Hm from the flat surface of the cushioning material or the sheet-like foam on the back surface of the laminate to the peak of the profile-processed surface, and the height Hv from the flat surface of the cushioning material or the sheet-like foam on the back surface of the laminate to the valley of the profile-processed surface.

9. A method for coloring a fusion layer of a cushioning material or a laminate according to any one of claims 1 to 7, comprising: A method for coloring the fusion layer of a cushioning material or a laminate, characterized in that the fusion layer or adhesive layer of the cushioning material or the laminate is a fusion layer, the fusion layer is exposed at a predetermined height on the surface of the corrugated uneven structure, and a number of circular linear patterns are formed at a predetermined distance from each other, and the fusion layer is selectively formed in a different color, yellow, by changing the crystallinity and molecular orientation when the surface of the resin foam that forms the fusion layer during fusion crystallizes in the process of melting and then solidifying, and by superimposing this on the residual effect of ADCA on the foam surface.

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