JPH0536028Y2 - - Google Patents
Info
- Publication number
- JPH0536028Y2 JPH0536028Y2 JP2954187U JP2954187U JPH0536028Y2 JP H0536028 Y2 JPH0536028 Y2 JP H0536028Y2 JP 2954187 U JP2954187 U JP 2954187U JP 2954187 U JP2954187 U JP 2954187U JP H0536028 Y2 JPH0536028 Y2 JP H0536028Y2
- Authority
- JP
- Japan
- Prior art keywords
- resin layer
- polyethylene
- tatami
- foam resin
- foam
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000006260 foam Substances 0.000 claims description 49
- 229920005989 resin Polymers 0.000 claims description 40
- 239000011347 resin Substances 0.000 claims description 40
- 229920001577 copolymer Polymers 0.000 claims description 16
- -1 polyethylene Polymers 0.000 claims description 16
- 239000004698 Polyethylene Substances 0.000 claims description 15
- 239000011162 core material Substances 0.000 claims description 15
- 229920000573 polyethylene Polymers 0.000 claims description 15
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 claims description 13
- 239000002245 particle Substances 0.000 claims description 8
- 229920003020 cross-linked polyethylene Polymers 0.000 claims description 7
- 239000004703 cross-linked polyethylene Substances 0.000 claims description 7
- 238000010097 foam moulding Methods 0.000 claims description 3
- 238000010030 laminating Methods 0.000 claims 1
- 238000010521 absorption reaction Methods 0.000 description 7
- 230000006835 compression Effects 0.000 description 7
- 238000007906 compression Methods 0.000 description 7
- 230000035939 shock Effects 0.000 description 6
- 239000000463 material Substances 0.000 description 4
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 230000006378 damage Effects 0.000 description 3
- 229920006327 polystyrene foam Polymers 0.000 description 3
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 2
- 230000002238 attenuated effect Effects 0.000 description 2
- 229940043430 calcium compound Drugs 0.000 description 2
- 150000001674 calcium compounds Chemical class 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229920013716 polyethylene resin Polymers 0.000 description 2
- 238000009958 sewing Methods 0.000 description 2
- 239000010902 straw Substances 0.000 description 2
- 244000025254 Cannabis sativa Species 0.000 description 1
- 244000043261 Hevea brasiliensis Species 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- 208000010040 Sprains and Strains Diseases 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 230000009172 bursting Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229920006248 expandable polystyrene Polymers 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000009408 flooring Methods 0.000 description 1
- 239000004088 foaming agent Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000012943 hotmelt Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 229920003052 natural elastomer Polymers 0.000 description 1
- 229920001194 natural rubber Polymers 0.000 description 1
- 239000011120 plywood Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000002685 polymerization catalyst Substances 0.000 description 1
- 230000000379 polymerizing effect Effects 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 229920003051 synthetic elastomer Polymers 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 239000005061 synthetic rubber Substances 0.000 description 1
- 230000037303 wrinkles Effects 0.000 description 1
Landscapes
- Floor Finish (AREA)
- Laminated Bodies (AREA)
Description
【考案の詳細な説明】
〔産業上の利用分野〕
本考案は、我が国において旧来より床材として
使用されている畳に係り、特に柔道場用に適した
畳に関するものである。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to tatami mats that have traditionally been used as flooring materials in Japan, and particularly to tatami mats suitable for judo halls.
従来の畳には、畳床を藁に代えて発泡樹脂にて
形成し、軽量化と湿気による腐食の防止とを図つ
たものがある。この種の畳としては、例えば、実
開昭56−67124号公報に開示されているように、
発泡性ポリエチレン製床の表面に、高圧法で得ら
れたポリエチレンを発泡させてなるマツトを張設
し、その上面に畳表を敷設したものが知られてい
る。あるいは、実開昭57−71630号公報に開示さ
れているように、裏面に柔軟性布帛を貼り合わせ
た芯板の上面に、クツシヨン材を介して畳表材を
張り、かつ、全体の厚さを小さいものにした構造
が知られている。
Some conventional tatami mats have a tatami floor made of foamed resin instead of straw to reduce weight and prevent corrosion due to moisture. As this type of tatami, for example, as disclosed in Japanese Utility Model Application No. 56-67124,
It is known that a mat made of foamed polyethylene obtained by a high-pressure method is stretched on the surface of a foamable polyethylene floor, and a tatami mat is laid on the top surface. Alternatively, as disclosed in Japanese Utility Model Application Publication No. 57-71630, a tatami cover material is applied to the top surface of a core board with a flexible fabric bonded to the back surface through a cushion material, and the overall thickness is Smaller structures are known.
しかしながら、実開昭56−67124号に開示され
ている構造では、発泡ポリエチレン製床を使用
し、その上に高圧法で得られたポリエチレンを発
泡させてなるマツトを設けているため、全体とし
ては柔らか過ぎるものとなつている。このため、
上記の畳を例えば柔道場に用いた場合には、競技
者の足が畳に食い込んで、捻挫等の怪我の原因に
もなりかねないという問題点を有している。その
うえ、長期使用中に発泡ポリエチレンを組成する
気泡が破壊されて経時的に厚みが薄くなるといつ
た厚さ変形を招来するばかりでなく、温度変化等
に起因して収縮するので、畳同士の間に隙間を生
じがちとなり、柔道場用として使用する上におい
て甚だ危険を伴いがちになるという欠点を有して
いる。 However, the structure disclosed in Japanese Utility Model Application Publication No. 56-67124 uses a foamed polyethylene floor and a mat made of foamed polyethylene obtained by a high-pressure method is provided on the floor, so the overall structure is It has become too soft. For this reason,
When the above-mentioned tatami mats are used, for example, in a judo hall, there is a problem in that the feet of athletes may dig into the tatami mats, potentially causing injuries such as sprains. Furthermore, during long-term use, the air bubbles that make up foamed polyethylene are destroyed and the thickness becomes thinner over time, leading to thickness deformation. This has the disadvantage that gaps tend to form between the judo halls, making it very dangerous when used for judo halls.
また、実開昭57−71630号に開示されている構
造は、床暖房を考慮したものであつて、薄厚構造
には適しているが、高い衝撃吸収機能を必要とす
る柔道場に供するには不適当であるという欠点を
有している。 In addition, the structure disclosed in Utility Model Application No. 57-71630 takes floor heating into consideration and is suitable for a thin structure, but it is not suitable for use in a judo hall that requires a high shock absorption function. It has the disadvantage of being unsuitable.
そこで、上記のような問題点を解決し得るもの
として、実開昭61−87829号公報には、ポリエチ
レン発泡ビーズにより形成された高分子発泡体、
もしくはポリエチレン−ポリスチレン共重合発泡
体からなる芯材の下面側に弾力性に優れた軟質の
発泡部材層を設け、芯材の上面側に衝撃分散用の
ベニヤ板およびポリエチレン発泡体層を設けた構
造が開示されている。 Therefore, as a solution to the above-mentioned problems, Japanese Utility Model Application Publication No. 61-87829 discloses a polymer foam made of polyethylene foam beads,
Alternatively, there is a structure in which a soft foam member layer with excellent elasticity is provided on the bottom side of a core material made of polyethylene-polystyrene copolymer foam, and a plywood board and a polyethylene foam layer for impact dispersion are provided on the top side of the core material. Disclosed.
また、柔道場用に適する他の畳として、実公昭
54−25849号公報には、ポリスチレン発泡体を芯
材とし、この芯材、即ちポリスチレン発泡体が有
する、局部的な圧縮に弱く、局部的な荷重が加え
られた場合、その個所に加えられた変形が容易に
復元しないという欠点を補うために、上記芯材の
下面側と上面側とに無機系カルシウム化合物配合
ポリエチレン系樹脂発泡体層を積層した構造が開
示されている。さらに、特公昭54−4180号公報に
は、硬質ウレタンフオームを圧縮して一部気泡破
壊したものを芯材とし、この下面側に裏地を設
け、上面側に畳表を設けた構造が開示されてい
る。 In addition, as other tatami mats suitable for judo halls,
Publication No. 54-25849 uses a polystyrene foam as a core material, and this core material, that is, the polystyrene foam, is weak against local compression, and when a local load is applied, In order to compensate for the drawback that deformation does not easily restore, a structure has been disclosed in which polyethylene resin foam layers containing an inorganic calcium compound are laminated on the lower and upper surfaces of the core material. Furthermore, Japanese Patent Publication No. 54-4180 discloses a structure in which a core material is made of compressed hard urethane foam with some of the bubbles destroyed, a lining is provided on the bottom side of the core material, and a tatami surface is provided on the top side. There is.
ところが、上記の実開昭61−87829号公報に開
示されている構造では、柔道場用畳として必要な
耐衝撃性、衝撃吸収性および耐圧縮性等の機能を
得るための構造が、多層構造で複雑になつてい
る。このため、部材点数が多くなり、コストアツ
プを招来するという問題点を有している。また、
実公昭54−25849号公報に開示されている構造に
おいても、芯材となるポリスチレン発泡体の欠点
を補うために上下の無機系カルシウム化合物配合
ポリエチレン系樹脂発泡体層は必要なものであ
り、上記の場合と同様に多層構造となるので、同
様の問題点を有している。特公昭54−4180号公報
に開示されている構造においては、衝撃を吸収す
るための層として上記のウレタンフオーム層のみ
を有するものとなつているので、構造が簡単であ
るものの、このような構造では、動的な荷重が繰
り返し加わつた場合に、容易に元の状態に復元し
難くなり、柔道場用畳として必要な耐圧縮性を備
えることができないという問題点を有している。
However, in the structure disclosed in the above-mentioned Japanese Utility Model Publication No. 61-87829, the structure in order to obtain functions such as impact resistance, shock absorption, and compression resistance required for tatami mats for judo halls is a multilayer structure. It's getting complicated. Therefore, there is a problem in that the number of parts increases, leading to an increase in costs. Also,
Even in the structure disclosed in Japanese Utility Model Publication No. 54-25849, the upper and lower layers of polyethylene resin foam containing an inorganic calcium compound are necessary to compensate for the drawbacks of the polystyrene foam core material. Since it has a multilayer structure like in the case of , it has the same problems. The structure disclosed in Japanese Patent Publication No. 54-4180 has only the above-mentioned urethane foam layer as a layer for absorbing impact, so although the structure is simple, such a structure However, when dynamic loads are applied repeatedly, it becomes difficult to restore the tatami to its original state, and the tatami mats have the problem of not being able to provide the compression resistance required for judo hall tatami mats.
従つて、本考案は、柔道場用畳として必要な耐
衝撃性、衝撃吸収性および耐圧縮性を備えるとと
もに、簡単な構造の柔道場用畳の提供を目的とし
ている。 Therefore, an object of the present invention is to provide a tatami mat for a judo hall that has the impact resistance, shock absorption, and compression resistance necessary for a tatami mat for a judo hall, and that has a simple structure.
本考案の柔道場用畳は、上記の課題を解決する
ために、芯材を成すポリエチレンとスチレンとの
共重合体からなる硬質発泡樹脂層の下面に裏シー
トを設けると共に、上記の硬質発泡樹脂層の上面
に、架橋ポリエチレンからなる軟質発泡樹脂層及
び畳表をこの順序に積層して形成され、上記の硬
質発泡樹脂層が、発泡性ポリエチレン−スチレン
共重合体粒子を発泡成形し、このポリエチレン−
スチレン共重合体の発泡体を、厚み方向に30〜70
％の範囲内で圧縮して一部気泡破壊して形成され
ていることを特徴としている。
In order to solve the above problems, the tatami mat for judo halls of the present invention has a backing sheet on the lower surface of the hard foam resin layer made of a copolymer of polyethylene and styrene that forms the core material, and A soft foam resin layer made of cross-linked polyethylene and a tatami surface are laminated in this order on the upper surface of the layer, and the hard foam resin layer is formed by foam-molding expandable polyethylene-styrene copolymer particles.
Styrene copolymer foam is 30 to 70 mm thick in the thickness direction.
It is characterized in that it is formed by compressing it within a range of % and partially destroying the bubbles.
上記の構成によれば、畳に加わつた衝撃は、架
橋ポリエチレンからなる軟質発泡樹脂層、及びポ
リエチレン−スチレン共重合体の発泡体を一部気
泡破壊して形成され、高い衝撃吸収力を備えた硬
質発泡樹脂層にて吸収され、確実に減衰される。
また、軟質発泡樹脂層は、畳に適度の柔軟性を付
与する。さらに、軟質発泡樹脂層は高い復元力を
有し、硬質発泡樹脂層は経年変化および温度変化
等による変形が少ない。また、本畳の構造は、芯
材を成す硬質発泡樹脂層の下面に裏シートを設
け、硬質発泡樹脂層の上面に軟質発泡樹脂層およ
び畳表を設けた簡単な構造となつている。これに
より、本畳は、柔道場用畳として必要な耐衝撃
性、衝撃吸収性および耐圧縮性を備えるととも
に、構造が簡単なものとなつている。
According to the above structure, the impact applied to the tatami is absorbed by partially destroying the cells of the soft foam resin layer made of cross-linked polyethylene and the foam of polyethylene-styrene copolymer, which has high shock absorption power. It is absorbed by the hard foam resin layer and is reliably attenuated.
In addition, the soft foam resin layer imparts appropriate flexibility to the tatami mat. Furthermore, the soft foam resin layer has high restoring force, and the hard foam resin layer is less likely to deform due to aging, temperature changes, and the like. Moreover, the structure of this tatami mat is simple, with a back sheet provided on the lower surface of the hard foamed resin layer forming the core material, and a soft foamed resin layer and a tatami surface provided on the upper surface of the hard foamed resin layer. As a result, this tatami has the impact resistance, shock absorption, and compression resistance necessary for a tatami for a judo hall, and has a simple structure.
本考案の一実施例を第１図に基づいて以下に説
明する。
An embodiment of the present invention will be described below with reference to FIG.
本考案に係る柔道場用畳は、芯材を成すポリエ
チレンとスチレンとの共重合体からなる硬質発泡
樹脂層１の下面に裏シート２を設けると共に、上
記の硬質発泡樹脂層１の上面に、架橋ポリエチレ
ンからなる硬質発泡樹脂層３及び畳表４をこの順
序に積層した構成となつている。さらに、上記畳
の端部から下面部にかけて、畳表４と硬質発泡樹
脂層１と裏シート２とを結合する縫糸５が縫成さ
れている。 The tatami mat for judo halls according to the present invention is provided with a back sheet 2 on the lower surface of the hard foam resin layer 1 made of a copolymer of polyethylene and styrene forming the core material, and on the upper surface of the hard foam resin layer 1, It has a structure in which a hard foam resin layer 3 made of crosslinked polyethylene and a tatami surface 4 are laminated in this order. Further, sewing threads 5 are sewn from the ends of the tatami mat to the bottom surface thereof to connect the tatami face 4, the hard foam resin layer 1, and the back sheet 2.
上記の裏シート２は、ニードルパンチの施され
た繊維シート等から成り、畳下面側の防湿のた
め、及び縫い糸に緊締されることによる硬質発泡
樹脂層１の破損防止のために設けられている。ま
た、上記の硬質発泡樹脂層１は、ポリエチレン粒
子を懸濁中で分散させ、これに重合触媒を含むス
チレンモノマーを添加し、ポリエチレン粒子中
で、モノマーを重合させ、これに易揮発性発泡剤
を含浸させて得た発泡性ポリエチレン−スチレン
共重合体粒子を発泡成形し、このポリエチレン−
スチレン共重合体の発泡体を、ロール等にて厚み
方向に本実施例では50％に圧縮して一部気泡破壊
して成るものである。 The above-mentioned back sheet 2 is made of a needle-punched fiber sheet, etc., and is provided to prevent moisture on the underside of the tatami mat and to prevent damage to the hard foam resin layer 1 due to being tightened by sewing threads. . In addition, the above-mentioned hard foam resin layer 1 can be made by dispersing polyethylene particles in suspension, adding thereto a styrene monomer containing a polymerization catalyst, polymerizing the monomer in the polyethylene particles, and adding an easily volatile foaming agent to the polyethylene particles. The expandable polyethylene-styrene copolymer particles obtained by impregnating the
In this example, a styrene copolymer foam is compressed to 50% in the thickness direction using a roll or the like to partially destroy the cells.
なお、前記硬質発泡樹脂層１は、本実施例では
厚み55mmの板状を成している。また、軟質発泡樹
脂層３は、本実施例では厚み４mmの板状を成して
いる。この軟質発泡樹脂層３は、経時的に収縮は
するものの、比較的薄く設定されているので畳全
体の厚みからして問題とならない。なお、畳の幅
方向ならびに長さ方向への収縮は、後述の接着剤
による一体化により発生しない。畳表４は、ポリ
プロピレン製材料或いは藺草等を織成したものか
らなる。 In this embodiment, the hard foam resin layer 1 has a plate shape with a thickness of 55 mm. Further, the soft foam resin layer 3 has a plate shape with a thickness of 4 mm in this embodiment. Although the soft foam resin layer 3 shrinks over time, it does not pose a problem considering the overall thickness of the tatami mat because it is set relatively thin. Note that shrinkage of the tatami in the width direction and length direction does not occur due to the integration using an adhesive, which will be described later. The tatami surface 4 is made of polypropylene material or woven straw grass.
そして、上記の各部材は、天然ゴム系、合成ゴ
ム系、合成樹脂系、或いはホツトメルト型等の接
着剤にて互いに貼着され、全体に一体化した構造
を成している。 The above-mentioned members are adhered to each other with natural rubber, synthetic rubber, synthetic resin, or hot melt type adhesives to form an integrated structure.
上記の構成において、本柔道場用畳に畳表４側
から衝撃が加わると、この衝撃力は、架橋ポリエ
チレンからなる軟質発泡樹脂層３、及びポリエチ
レンとスチレンとの共重合体からなる硬質発泡樹
脂層１にて吸収される。 In the above configuration, when an impact is applied to the tatami mat for judo hall from the tatami facing side 4, this impact force is absorbed by the soft foam resin layer 3 made of cross-linked polyethylene and the hard foam resin layer made of a copolymer of polyethylene and styrene. Absorbed at 1.
特に、ポリエチレン−スチレン共重合体の発泡
体を厚み方向に一部気泡破壊して形成された硬質
発泡樹脂層１は高い衝撃吸収力を有しており、加
わつた衝撃は的確に減衰される。また、上記硬質
発泡樹脂層１は適度の硬さと粘りを有するため、
大きな衝撃が加わつた場合であつても、割れ或い
は欠損を生じ難く、かつ柔らか過ぎて足が食い込
むというような不都合も生じない。特に、発泡ポ
リスチレン特有の、柔道場用畳としては硬すぎる
といつた欠点もなくなり、柔道場用畳としての適
度の硬さが得られることになる。 In particular, the hard foamed resin layer 1, which is formed by partially bursting the cells in the thickness direction of a polyethylene-styrene copolymer foam, has a high impact absorption ability, and the applied impact is accurately attenuated. In addition, since the hard foam resin layer 1 has appropriate hardness and stickiness,
Even if a large impact is applied, it will not easily crack or break, and will not cause problems such as being too soft and causing your feet to dig into it. In particular, the drawback of foamed polystyrene, which is that it is too hard for judo hall tatami mats, is eliminated, and a suitable hardness for judo hall tatami mats can be obtained.
そして、耐候性に優れ、経年により厚みが薄く
変形することもなく、かつ温度変化による収縮、
及びこれに伴う形崩れも少ない。 It has excellent weather resistance, does not become thinner and deform over time, and does not shrink due to temperature changes.
There is also less deformation associated with this.
上記のように、硬質発泡樹脂層１は、耐衝撃
性、耐圧縮性に優れているので、荷重分散のため
の硬質板が不必要となり、構造が簡素となつてい
る。一方、架橋ポリエチレンからなる軟質発泡樹
脂層３は、適度の柔軟性と高い復元力を有するこ
とにより、畳表面に変形が生じ難い。 As mentioned above, since the hard foam resin layer 1 has excellent impact resistance and compression resistance, a hard plate for load distribution is unnecessary, and the structure is simple. On the other hand, the soft foamed resin layer 3 made of crosslinked polyethylene has appropriate flexibility and high restoring force, so that the surface of the tatami mat is unlikely to be deformed.
また、裏シート２、硬質発泡樹脂層１、軟質発
泡樹脂層３及び畳表４が互いに接着剤にて貼着さ
れていることにより、畳のふくらみや、ずれ及び
皺等が生じ難く、各部材が破損し難いようになつ
ている。さらに、畳全体の縫製を行つていないた
め、構造が簡単である。その上、芯材及びその他
の部材を発泡樹脂等の化学製品にて構成している
ことにより、軽量であると共に、湿気によつて腐
食することなく、良好な耐久性を有している。 In addition, since the back sheet 2, hard foam resin layer 1, soft foam resin layer 3, and tatami face 4 are adhered to each other with adhesive, the tatami is less likely to bulge, shift, or wrinkle, and each member is It is designed to be difficult to damage. Furthermore, since the entire tatami mat is not sewn, the structure is simple. Furthermore, since the core material and other members are made of chemical products such as foamed resin, it is lightweight, does not corrode due to moisture, and has good durability.
本考案の柔道場用畳は、以上のように、芯材を
成すポリエチレンとスチレンとの共重合体からな
る硬質発泡樹脂層の下面に裏シートを設けると共
に、上記の硬質発泡樹脂層の上面に、架橋ポリエ
チレンからなる軟質発泡樹脂層及び畳表をこの順
序に積層して形成され、上記の硬質発泡樹脂層
が、発泡体ポリエチレン−スチレン共重合体粒子
を発泡成形し、このポリエチレン−スチレン共重
合体の発泡体を、厚み方向に30〜70％の範囲内で
圧縮して一部気泡破壊して形成されている構成で
ある。
As described above, the tatami mat for judo halls of the present invention has a backing sheet on the bottom surface of the hard foam resin layer made of a copolymer of polyethylene and styrene that forms the core material, and a back sheet on the top surface of the hard foam resin layer. , a soft foam resin layer made of cross-linked polyethylene and a tatami surface are laminated in this order, and the above-mentioned hard foam resin layer is formed by foam-molding foam polyethylene-styrene copolymer particles, and this polyethylene-styrene copolymer The structure is made by compressing a foam within the range of 30 to 70% in the thickness direction and partially destroying the cells.
これにより、柔道場用畳として必要な耐衝撃
性、衝撃吸収性および耐圧縮性を備えるととも
に、構造が簡単であるという効果を奏する。 This provides the impact resistance, shock absorption and compression resistance necessary for a judo hall tatami mat, as well as a simple structure.
第１図は本考案の一実施例を示す縦断面説明図
である。
１は硬質発泡樹脂層、２は裏シート、３は軟質
発泡樹脂層、４は畳表である。
FIG. 1 is an explanatory longitudinal cross-sectional view showing one embodiment of the present invention. 1 is a hard foam resin layer, 2 is a back sheet, 3 is a soft foam resin layer, and 4 is a tatami surface.
Claims (1)
体からなる硬質発泡樹脂層の下面に裏シートを設
けると共に、上記の硬質発泡樹脂層の上面に、架
橋ポリエチレンからなる軟質発泡樹脂層及び畳表
をこの順序に積層して形成され、上記の硬質発泡
樹脂層が、発泡性ポリエチレン−スチレン共重合
体粒子を発泡成形し、このポリエチレン−スチレ
ン共重合体の発泡体を、厚み方向に30〜70％の範
囲内で圧縮して一部気泡破壊して形成されている
ことを特徴とする柔道場用畳。 A backing sheet is provided on the bottom surface of the hard foam resin layer made of a copolymer of polyethylene and styrene that forms the core material, and a soft foam resin layer made of crosslinked polyethylene and a tatami surface are placed on the top surface of the hard foam resin layer in this order. The above-mentioned hard foam resin layer is formed by foam-molding expandable polyethylene-styrene copolymer particles, and the polyethylene-styrene copolymer foam is formed by laminating the polyethylene-styrene copolymer particles in a range of 30 to 70% in the thickness direction. Tatami for judo halls is characterized by being formed by compressing the inner layer and partially destroying the air bubbles.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2954187U JPH0536028Y2 (en) | 1987-02-27 | 1987-02-27 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2954187U JPH0536028Y2 (en) | 1987-02-27 | 1987-02-27 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63136139U JPS63136139U (en) | 1988-09-07 |
| JPH0536028Y2 true JPH0536028Y2 (en) | 1993-09-13 |
Family
ID=30833516
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2954187U Expired - Lifetime JPH0536028Y2 (en) | 1987-02-27 | 1987-02-27 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0536028Y2 (en) |
-
1987
- 1987-02-27 JP JP2954187U patent/JPH0536028Y2/ja not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63136139U (en) | 1988-09-07 |
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