JPH10252248A - Straw mat bed and straw mat - Google Patents
Straw mat bed and straw matInfo
- Publication number
- JPH10252248A JPH10252248A JP7891797A JP7891797A JPH10252248A JP H10252248 A JPH10252248 A JP H10252248A JP 7891797 A JP7891797 A JP 7891797A JP 7891797 A JP7891797 A JP 7891797A JP H10252248 A JPH10252248 A JP H10252248A
- Authority
- JP
- Japan
- Prior art keywords
- tatami
- foam
- tatami mat
- floor
- mat
- 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.)
- Pending
Links
Landscapes
- Floor Finish (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、構成主要素にポリ
オレフィン系樹脂発泡体を用いた畳床及びこの畳床を用
いた畳に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tatami floor using a polyolefin resin foam as a main component and a tatami mat using this tatami floor.
【０００２】[0002]
【従来の技術及び発明が解決しようとする課題】従来か
ら日本の家屋において広く使用されている畳は、藁等を
数層重ね合わせて麻糸等で縦横に縫って締め付けてなる
畳床の表面に、い草を縫って形成した畳表を縫着一体化
してなる構造を有している。2. Description of the Related Art Conventionally, tatami mats that have been widely used in Japanese houses are constructed by stacking several layers of straw or the like, sewing them vertically and horizontally with a hemp thread, and tightening the tatami floor. And a tatami table formed by sewing rush.
【０００３】ところで、数層の藁等を重ね合わせて形成
されている畳床は非常に重く、このため従来の畳は、１
畳もので幅が約１ｍ、長さが約２ｍで重さは約１４〜３
４kgと重く、運搬や保管が容易ではない。このため、近
年流行の日曜大工専門店等においても、一般に取り替え
用の畳は取り扱っておらず、畳替えの作業は専ら畳の専
門業者に任せているのが実情である。このような実情か
ら、近年は畳床に合成樹脂発泡体を用いた畳も使用され
るようになっている。[0003] By the way, a tatami floor formed by laminating several layers of straw or the like is very heavy, so that a conventional tatami mat has a size of 1 m.
Tatami items are about 1m wide, about 2m long and weigh about 14-3
It is heavy at 4kg and is not easy to transport and store. For this reason, even in recent years, do-it-yourself carpentry shops do not generally handle tatami mats for replacement, and the tatami matting work is generally left to specialized tatami mats. Under such circumstances, tatami mats using a synthetic resin foam for a tatami floor have recently been used.
【０００４】従来、畳床に用いる合成樹脂発泡体として
は、ポリスチレン系樹脂押出発泡体が用いられていた
が、ポリスチレン系樹脂押出発泡体を用いた畳床は、圧
縮硬さ、圧縮回復率が小さいため、長年の使用によって
変形してくる等の問題があった。このような問題を解決
するためにポリオレフィン系樹脂発泡体が用いられるよ
うになり、例えば実公昭６３−４７５１号にはプロピレ
ン系樹脂発泡粒子を金型内で成型して得た、密度０．０
１〜０．０６ｇ／ｃｍ3 の発泡成型体を用いた畳床が記
載されている。Conventionally, extruded polystyrene resin foam has been used as a synthetic resin foam used for a tatami floor. However, a tatami floor using an extruded polystyrene resin foam has a compression hardness and a compression recovery rate. Because of its small size, there is a problem that it is deformed by long-term use. In order to solve such a problem, a polyolefin resin foam has come to be used. For example, Japanese Utility Model Publication No. 63-4751 discloses a method of molding a foamed propylene resin particle in a mold, having a density of 0.0
A tatami floor using a foam molded article of 1 to 0.06 g / cm 3 is described.
【０００５】しかしながら、ポリオレフィン系樹脂発泡
体は軽量で割れ難く、腰が強い利点がある反面、曲げに
対する抗力が弱く、ポリオレフィン系樹脂発泡体からな
る畳床の表面に畳表を縫着すると、畳表の張力によって
畳床に反りが生じるという問題がある。即ち、畳床表面
に畳表を縫着一体化させる際、仕上がり時に畳表が弛ま
ないようにするため、畳表の一辺を畳床の一辺側に縫着
した後、畳表を強く引張った状態で、畳表の他の一辺を
畳床の他方の辺側に縫着して一体化している。このた
め、畳床には縫着時に畳表からの強い張力が加わり、曲
げに対する抗力が弱いポリオレフィン系樹脂発泡体から
なる畳床の場合には、畳床が表面側に反ってしまう虞れ
があり、畳床が表面側に反ってしまうと、表面側に凹湾
曲した反りを有する畳となり、このような畳表面側に凹
湾曲した反りは、きしみ音の発生原因となったり、歩行
時につまずく原因となるため好ましくない。[0005] However, polyolefin resin foams are lightweight and hard to crack, and have the advantage of being strong and stiff. On the other hand, when the tatami mat is sewn on the surface of a tatami mat made of the polyolefin resin foam, the resistance to bending is weak. There is a problem that the tatami floor is warped by the tension. That is, when the tatami mat is sewn on the surface of the tatami mat floor, one side of the tatami mat is sewn to one side of the tatami mat floor in order to prevent the tatami mat from being loosened at the time of finishing. Is sewn to the other side of the tatami floor and integrated. For this reason, a strong tension from the tatami mat is applied to the tatami mat at the time of sewing, and in the case of a tatami mat made of a polyolefin resin foam having a low resistance to bending, the tatami mat may be warped to the surface side. If the tatami floor warps to the surface side, it will become a tatami with a concavely curved warp on the surface side, and such a concavely curved warp on the tatami surface side may cause squeak noise or stumble when walking. Is not preferred.
【０００６】このため、ポリオレフィン系樹脂発泡体を
用いた畳床の場合、畳表を引っ張った状態で縫着する代
わりに、畳表の裏面側に接着剤を塗布して畳床に接着す
ることにより、畳床の反りと仕上がり時の畳表の弛みと
を防止する方法が採用されていた。しかしながら接着剤
によって畳表を接着した場合、接着剤臭が残ったり、畳
表の張り替えが困難となったり、接着剤が畳表面に滲出
さないようにするために畳表の裏面側に特別な処理を施
さなくてはならない等の問題があった。[0006] For this reason, in the case of a tatami floor using a polyolefin resin foam, instead of sewing the tatami mat in a stretched state, an adhesive is applied to the back side of the tatami mat and adhered to the tatami mat. A method for preventing warpage of the tatami floor and loosening of the tatami mat at the time of finishing has been adopted. However, when the tatami mat is bonded to the tatami mat with an adhesive, a special treatment is applied to the back side of the tatami mat to prevent the adhesive odor from remaining, making it difficult to replace the tatami mat, and preventing the adhesive from seeping onto the tatami mat surface. There were problems such as the necessity.
【０００７】本発明は上記した問題点に鑑みなされたも
ので、上記従来のポリオレフィン系樹脂発泡体を主構成
要素とする畳床の欠点を解消した畳床及びこの畳床を用
いた表面側に凹湾曲した反りのない畳を提供することを
目的とする。SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and a tatami floor which has solved the drawbacks of the above-mentioned tatami floor having a conventional polyolefin resin foam as a main component and a surface using the tatami floor. It is an object of the present invention to provide a concave-curved tatami that is concavely curved.
【０００８】[0008]
【課題を解決するための手段】即ち本発明の畳床は、全
厚みの８５％以上の部分がポリオレフィン系樹脂発泡体
からなる畳床であって、該畳床は少なくとも長手方向に
反りを有し、且つ下面側に反りによる凹湾曲が形成され
ていることを特徴とする。本発明の畳床は、長手方向の
最大反り値が２ｍｍ以上であるものが好ましく、ポリオ
レフィン系樹脂発泡体としては、密度が０．１ｇ／ｃｍ
3 以下、曲げ試験による最大荷重が３０ｋｇｆ以上のポ
リプロピレン系樹脂発泡体が好ましい。また長手方向と
ともに長手方向と直交する方向にも、最大反り値が１ｍ
ｍ以上の反りを有するものであっても良い。また本発明
の畳は上記畳床の表面側に、長手方向に張力を加えた状
態で畳表が縫着一体化されていることを特徴とする。That is, the tatami floor of the present invention is a tatami floor in which at least 85% of the total thickness is made of a polyolefin resin foam, and the tatami floor has at least a warp in the longitudinal direction. In addition, a concave curve due to warpage is formed on the lower surface side. The tatami floor of the present invention preferably has a maximum warp value of 2 mm or more in the longitudinal direction, and has a density of 0.1 g / cm as a polyolefin resin foam.
A polypropylene resin foam having a maximum load of 30 kgf or more in a bending test of 3 or less is preferable. The maximum warp value is 1 m both in the longitudinal direction and in the direction perpendicular to the longitudinal direction.
m or more. The tatami mat according to the present invention is characterized in that a tatami mat is sewn and integrated on the surface side of the tatami mat floor in a state where tension is applied in a longitudinal direction.
【０００９】[0009]
【実施例】以下、本発明の一実施例を図面に基き説明す
る。An embodiment of the present invention will be described below with reference to the drawings.
【００１０】図１は本発明の畳床１の一例を示し、この
例に示す畳床１はポリオレフィン系樹脂発泡体２によっ
て構成されている。図１に示すように本発明の畳床１
は、長手方向（図中、左右方向）に反りを有しており、
畳床１の下面側に反りによる凹湾曲１ａが形成されてい
る。FIG. 1 shows an example of a tatami floor 1 according to the present invention. The tatami floor 1 shown in this embodiment is made of a polyolefin resin foam 2. As shown in FIG. 1, the tatami floor 1 of the present invention
Has a warp in the longitudinal direction (the left-right direction in the figure),
A concave curve 1a due to warpage is formed on the lower surface side of the tatami floor 1.
【００１１】本発明の畳床１において、反りの最大値
（最大反り値）は、図２に示すように畳床１を裏返しに
して水平面３上に置き、畳床１の長手方向に沿う２辺の
うちの一辺側の隣合うコーナー部４、４間に水糸５を渡
し、この水糸５と畳床１との間の距離の最大値：ｄをい
う。本発明において長手方向の最大反り値は、長手方向
に沿った２辺についてそれぞれ測定するものとし、本発
明の畳床１は長手方向の最大反り値が、長手方向に沿う
両辺における最大反り値が共に２ｍｍ以上であるような
反りを有していることが好ましく、特に４ｍｍ以上であ
るような反りを有していることが好ましい。尚、最大反
り値が極度に大きくなると、畳表を縫着する際に発泡体
２が割れる虞れがあるため、最大反り値は３０ｍｍ程度
以下であることが好ましい。In the tatami floor 1 of the present invention, the maximum value of the warp (maximum warp value) is set on the horizontal surface 3 with the tatami floor 1 turned upside down as shown in FIG. A water thread 5 is passed between adjacent corner portions 4 on one side of the side, and the maximum value of the distance between the water thread 5 and the tatami floor 1 is d. In the present invention, the maximum warp value in the longitudinal direction shall be measured for each of two sides along the longitudinal direction, and the tatami floor 1 of the present invention has the maximum warp value in the longitudinal direction, the maximum warp value on both sides along the longitudinal direction. Both preferably have a warp of 2 mm or more, particularly preferably have a warp of 4 mm or more. If the maximum warp value is extremely large, the foam 2 may be broken when sewing the tatami mat. Therefore, the maximum warp value is preferably about 30 mm or less.
【００１２】上記ポリオレフィン系樹脂発泡体２を構成
するポリオレフィン系樹脂としては、例えば低密度ポリ
エチレン、中密度ポリエチレン、高密度ポリエチレン、
直鎖状低密度ポリエチレン、ポリプロピレン、エチレン
−プロピレン共重合体、エチレン−ブテン共重合体等が
挙げられるが、ポリプロピレン系樹脂が好ましい。ポリ
オレフィン系樹脂発泡体２として、ポリプロピレン系樹
脂発泡体を用いると、強度を低下させることなく更なる
軽量化が図れるため好ましい。ポリオレフィン系樹脂発
泡体２としてポリプロピレン系樹脂を用いる場合、軽量
で畳にクッション性を与えることのできる、密度が０．
１ｇ／ｃｍ3 以下のものが好ましいが、より一層の軽量
化とクッション性を付与するためには、０．０９ｇ／ｃ
ｍ3 以下のものが好ましい。また永久歪みやヘタリを防
止するうえから、密度が０．０３ｇ／ｃｍ3 以上のもの
が好ましい。Examples of the polyolefin resin constituting the polyolefin resin foam 2 include low-density polyethylene, medium-density polyethylene, and high-density polyethylene.
Examples thereof include linear low-density polyethylene, polypropylene, ethylene-propylene copolymer, ethylene-butene copolymer, and the like, and a polypropylene-based resin is preferable. It is preferable to use a polypropylene-based resin foam as the polyolefin-based resin foam 2 because further weight reduction can be achieved without lowering the strength. When a polypropylene-based resin is used as the polyolefin-based resin foam 2, it is lightweight and can provide cushioning to the tatami mat.
1 g / cm 3 or less is preferable, but in order to further reduce the weight and provide cushioning, 0.09 g / c 3
Those having m 3 or less are preferred. Further, from the viewpoint of preventing permanent distortion and settling, those having a density of 0.03 g / cm 3 or more are preferable.
【００１３】本発明の畳床１の一般的な大きさは、長さ
約１８００ｍｍ、幅約９００ｍｍ、厚さ約５０ｍｍ〜５
５ｍｍであり、上記したようなポリオレフィン系樹脂発
泡体２のみからなるものであっても、図３に示すように
ポリオレフィン系樹脂発泡体２に、裏面材６や表面材７
等を組合わせた複合型であっても良いが、複合型の畳床
の場合には、畳床１の全厚みの８５％以上の部分がポリ
オレフィン系樹脂発泡体２で構成されていることが必要
である。The general size of the tatami floor 1 of the present invention is about 1800 mm in length, about 900 mm in width, and about 50 mm to 5 in thickness.
3 mm, the back material 6 and the front material 7 are added to the polyolefin resin foam 2 as shown in FIG.
In the case of a composite type tatami floor, 85% or more of the total thickness of the tatami floor 1 may be composed of the polyolefin resin foam 2. is necessary.
【００１４】畳床１に畳表８を縫着するには、畳床１の
長手方向と直交する一辺に畳表８の一辺側を縫着糸１０
によって縫着した後、畳表８を引っ張って畳表８に張力
を加えた状態で畳表８の他方の辺を、畳床１の長手方向
と直交するもう一方の辺側に縫着糸１０によって縫着一
体化する方法等が採用される。このようにして畳表８を
畳床１に縫着一体化すると、畳床１の反りが解消される
方向に畳表８による張力が加わり、畳床１が有していた
反りは無くなるか或いは緩和される。しかしながら、ポ
リオレフィン系樹脂発泡体２の曲げ弾性が極度に低い場
合には、畳表８からの張力が畳床１に加わった際に、畳
表１が反対方向に反ったり（畳９の表側に凹湾曲が形成
されるような反りを生じる）、畳表８に弛みが生じる虞
れがある。このような問題が生じないようにするため
に、発泡体２は曲げ試験による最大荷重が３０ｋｇｆ以
上のもの、特に最大荷重が４０ｋｇｆ以上のものが好ま
しい。In order to sew the tatami mat 8 on the tatami mat 1, one side of the tatami mat 8 is sewn on one side orthogonal to the longitudinal direction of the tatami mat 1.
After the tatami mat 8 is pulled, the other side of the tatami mat 8 is sewn to the other side orthogonal to the longitudinal direction of the tatami mat 1 with a sewing thread 10 while tension is applied to the tatami mat 8. An integration method or the like is adopted. When the tatami mat 8 is sewn and integrated with the tatami mat 1 in this way, tension is applied by the tatami mat 8 in a direction in which the warp of the tatami mat 1 is eliminated, and the warp of the tatami mat 1 is eliminated or reduced. You. However, when the bending elasticity of the polyolefin resin foam 2 is extremely low, when the tension from the tatami mat 8 is applied to the tatami mat floor 1, the tatami mat 1 warps in the opposite direction (concave curved to the front side of the tatami mat 9). May be formed), and the tatami table 8 may be loosened. In order to prevent such a problem from occurring, the foam 2 preferably has a maximum load of 30 kgf or more in a bending test, particularly preferably a maximum load of 40 kgf or more.
【００１５】上記曲げ試験における最大荷重とは、ＪＩ
Ｓ Ｋ７２２１の硬質発泡プラスチックの曲げ試験方法
により測定される最大荷重であり、ポリオレフィン系樹
脂発泡体２より、長さ３００ｍｍ、幅７５ｍｍの試験片
（厚さは発泡体２の厚さのままとする。また発泡体２の
長手方向と試験片の長手方向とが一致するようにす
る。）を切り出し、この試験片の畳床の下側となる側を
下側にして試験装置にセットし（支持台側に向けてセッ
トする）、試験速度１０ｍｍ／分、支点間距離２００ｍ
ｍ、加圧用くさび及び支持台の先端半径を共に５ｍｍと
して曲げ試験測定を行って得た値である。尚、曲げ試験
試験装置としては、株式会社オリエンテック製のテンシ
ロンＵＴＭ-III５００を用いた。The maximum load in the above bending test is defined by JI
SK7221 is the maximum load measured by the bending test method of the rigid foamed plastic, and is a test piece having a length of 300 mm and a width of 75 mm from the polyolefin resin foam 2 (the thickness remains the thickness of the foam 2). Further, the longitudinal direction of the foam 2 is made to coincide with the longitudinal direction of the test piece.), And the test piece is set in a test apparatus with the lower side of the tatami floor facing down (support). (Set toward the table side), test speed 10mm / min, distance between fulcrums 200m
m, a value obtained by performing a bending test measurement with both the wedge for pressurization and the tip radius of the support base being 5 mm. As a bending test apparatus, Tensilon UTM-III500 manufactured by Orientec Co., Ltd. was used.
【００１６】本発明の畳床１は、上記した長手方向の反
りとともに、長手方向と直交する方向（幅方向）にも反
りを有していると更に好ましい。畳床１が幅方向にも反
りを有していると、畳９の表側に凹湾曲した反りが発生
したり、畳表８に弛みが生じるのを更に効果的に防止で
きる効果がある。幅方向の最大反り値は前記した長手方
向の最大反り値の測定法と同様に、長手方向と直交する
両辺側において測定し、両辺側共に最大反り値が１ｍｍ
以上、特に２〜１５ｍｍであるものが好ましい。It is more preferable that the tatami floor 1 of the present invention has a warp in a direction (width direction) orthogonal to the longitudinal direction as well as the warp in the longitudinal direction described above. When the tatami floor 1 also has a warp in the width direction, it is possible to more effectively prevent a concavely curved warp from being generated on the front side of the tatami mat 9 and a loosening of the tatami mat 8 from occurring. The maximum warp value in the width direction is measured on both sides perpendicular to the longitudinal direction in the same manner as the above-described method for measuring the maximum warp value in the longitudinal direction, and the maximum warp value on both sides is 1 mm.
As described above, those having a thickness of 2 to 15 mm are particularly preferable.
【００１７】下面側が凹湾曲した反りを有する畳床１を
得るには、反りを有するポリオレフィン系樹脂発泡体２
の凹湾曲面側を下面側にして畳床１を形成すれば良い。
反りを有するポリオレフィン系樹脂発泡体２は、ポリ
オレフィン系樹脂発泡粒子を金型内で成型して得た型内
発泡成型体や、押出機から発泡剤を含有するポリオレフ
ィン系樹脂組成物を押出発泡して得た押出発泡体の両表
面側に形成されているスキン層のうち、一方の面のスキ
ン層を切除することにより、スキン層を切除した面に収
縮を生じさせてスキン層を切除した面側に凹湾曲した反
りを生じさせる方法、湾曲した面を有する金型内でポ
リオレフィン系樹脂発泡粒子を発泡成型する方法、等に
より得ることができる。In order to obtain a tatami floor 1 having a warp whose lower surface side is concavely curved, a polyolefin resin foam 2 having a warp is required.
The tatami floor 1 may be formed by setting the concave curved surface side of the tatami floor to the lower surface side.
The warped polyolefin resin foam 2 is obtained by extrusion-foaming an in-mold foam molded product obtained by molding polyolefin resin foam particles in a mold or a polyolefin resin composition containing a foaming agent from an extruder. Of the skin layers formed on both surface sides of the extruded foam obtained by cutting, the skin layer on one side is cut off to cause shrinkage on the side where the skin layer has been cut off, and the skin layer is cut off. It can be obtained by a method of causing a concavely curved warp on the side, a method of foaming and molding polyolefin-based resin expanded particles in a mold having a curved surface, and the like.
【００１８】上記の方法によれば長手方向及び幅方向
の両方に反りのある発泡体が得られ、の方法では金型
の形状により、長手方向のみ又は長手方向と幅方向の両
方に反りのある発泡体を得ることができる。尚、型内発
泡成型体の場合、表面に発泡粒子の充填口跡や、発泡成
型体を型から取り外すためのエジェクトピン跡が残って
いるが、上記の方法により、スキン層を切除する面
と、発泡粒子の充填口やエジェクトピン側とを一致させ
るようにして反りのある発泡体を製造する方法を採用す
ると、スキン層の切除によって発泡体表面から発泡粒子
充填口跡やエジェクトピン跡が切除されるため好まし
い。According to the above method, a foam having a warp in both the longitudinal direction and the width direction can be obtained. In the method, there is a warp only in the longitudinal direction or both in the longitudinal direction and the width direction depending on the shape of the mold. A foam can be obtained. In addition, in the case of the in-mold foam molded body, the filling port traces of the foam particles and the eject pin traces for removing the foam molded body from the mold remain on the surface, but by the above method, the surface from which the skin layer is cut off, When a method of manufacturing a warped foam by matching the filling port of the foam particles and the eject pin side is adopted, the foam particle filling port trace and the eject pin trace are cut off from the foam surface by cutting the skin layer. Therefore, it is preferable.
【００１９】図３に示す畳９において、畳表８はいぐさ
の茎等の如き天然の茎状材を用いて形成したもののみな
らず、塩化ビニル等の合成樹脂によって形成した茎状材
を用いて形成してものであっても良い。畳表８は該畳表
８を構成する茎状材の方向が畳床１の長手方向と直交す
るように位置せしめて、長手方向に張力を加えた状態で
縫着される。尚、畳９の長手方向の両端縁部には通常、
畳縁が取り付けられる。In the tatami mat 9 shown in FIG. 3, the tatami mat 8 is formed not only using a natural stalk-shaped material such as rush stems but also using a stalk-shaped material formed of a synthetic resin such as vinyl chloride. It may be formed. The tatami mat 8 is sewn with the stalks constituting the tatami mat 8 positioned so that the direction of the stalks is orthogonal to the longitudinal direction of the tatami floor 1 and tension is applied in the longitudinal direction. In addition, usually, both ends in the longitudinal direction of the tatami 9 are
Tatami rims are attached.
【００２０】前記したように、本発明の畳床１は全厚み
の８５％以上の部分がポリオレフィン系樹脂発泡体２に
よって構成されるが、必要に応じてポリオレフィン系樹
脂発泡体２に、図３に示したように裏面材６や表面材７
を組合わせて構成することもできる。裏面材６として
は、例えばクラフト紙、Ｋライナー等の紙類、ポリエチ
レン、ポリプロピレン、飽和ポリエステル等からなるフ
ィルム、シート、クロスシート、織布、又は不織布等の
合成ポリマーシート、或いはこれらの複合体等が用いら
れる。最も好ましい裏面材６の例は、クラフト紙とポリ
オレフィンクロスシート（ポリオレフィンのテープ状フ
ィルムを、複数縦横に交差させて相互に融着した割布）
との積層シートであり、クラフト紙側が発泡体２側とな
るように積層することが好ましい。As described above, the tatami floor 1 of the present invention has a portion of 85% or more of the total thickness composed of the polyolefin resin foam 2, and if necessary, the polyolefin resin foam 2 is added to the tatami floor 1 as shown in FIG. As shown in FIG.
May be combined. As the backing material 6, for example, papers such as kraft paper and K liner, films, sheets, cross sheets, synthetic polymer sheets such as woven fabric or non-woven fabric, or composites thereof made of polyethylene, polypropylene, saturated polyester, or the like Is used. The most preferred example of the backing material 6 is kraft paper and a polyolefin cloth sheet (split cloth in which a plurality of polyolefin tape-like films are vertically and horizontally crossed and fused to each other).
It is preferable that the sheets are laminated such that the kraft paper side is the foam 2 side.
【００２１】また表面材７としては、防虫不織布シー
ト、クッションシート等を用いることができる。尚、裏
面材６又は／及び表面材７を発泡体２に積層して畳床を
製造する場合、通常、それら（二者又は三者）を重ね合
わせて縫着一体化する方法が採用される。As the surface material 7, an insect repellent nonwoven fabric sheet, a cushion sheet or the like can be used. When a tatami floor is manufactured by laminating the back surface member 6 and / or the surface member 7 on the foam 2, a method is usually adopted in which these members (two or three members) are overlapped and sewn and integrated. .
【００２２】次に具体的実施例を挙げて本発明を更に詳
細に説明する。Next, the present invention will be described in more detail with reference to specific examples.
【００２３】実施例１ エチレン−プロピレンランダム共重合体（エチレン成分
含有量２．４重量％）の発泡粒子を金型内で成型して得
た、密度０．０６ｇ／ｃｍ3 、長さ１８２０ｍｍ、幅９
１５ｍｍ、厚み６０ｍｍの発泡体の片面側を５ｍｍ厚で
スライスしてスキン層を切除することにより、スキン層
を切除した面側に凹湾曲した反りを生じさせた。この発
泡体の曲げ試験における最大荷重は５８．０ｋｇｆであ
った。反りの生じた発泡体の最大反り値は、長手方向の
両辺側とも約１４ｍｍ、幅方向の両辺側とも約７ｍｍで
あった。この反りの生じた発泡体の凹湾曲面側を裏側と
し、表側に防虫不織布シートを、裏側には裏面材（クラ
フト紙と、複数のポリエチレンフィルムのテープ状物を
縦横に交差させて相互に融着した割布との積層シート）
を重ねあわせて畳床として用い、その表面側に自動表張
り機によって畳表を縫着一体化して畳を製造した。この
畳には、表面側に凹湾曲した反りは認められなかった。Example 1 Expanded particles of an ethylene-propylene random copolymer (ethylene content: 2.4% by weight) were molded in a mold, and had a density of 0.06 g / cm 3 , a length of 1820 mm, Width 9
One side of the foam having a thickness of 15 mm and a thickness of 60 mm was sliced at a thickness of 5 mm and the skin layer was cut off, so that a concavely curved warp was generated on the cut side of the skin layer. The maximum load in the bending test of this foam was 58.0 kgf. The maximum warp value of the warped foam was about 14 mm on both sides in the longitudinal direction and about 7 mm on both sides in the width direction. The concave curved surface side of the warped foam is the back side, the insect repellent nonwoven sheet is on the front side, and the back side (kraft paper and a tape of polyethylene film are crossed vertically and horizontally to fuse with each other). Laminated sheet with worn cloth)
Were used as a tatami floor, and the tatami table was sewn and integrated on the surface side of the tatami floor with an automatic upholstering machine to produce a tatami mat. In this tatami, no concavely curved warp was observed on the surface side.
【００２４】比較例１ エチレン−プロピレンランダム共重合体（エチレン成分
含有量２．４重量％）の発泡粒子を金型内で成型して、
密度０．０４５ｇ／ｃｍ3 、長さ１８２０ｍｍ、幅９１
５ｍｍ、厚み５５ｍｍの発泡体を得た。この発泡体には
反りは認められなかった。次いでこの発泡体に実施例１
と同様の防虫不織布シートと裏面材とを重ね合わせて畳
床として用い、表面側に自動表張り機によって畳表を縫
着一体化して畳を製造した。得られた畳には、表面側に
凹湾曲した反りが生じていた。Comparative Example 1 Expanded particles of an ethylene-propylene random copolymer (ethylene component content: 2.4% by weight) were molded in a mold.
Density 0.045 g / cm 3 , length 1820 mm, width 91
A foam having a thickness of 5 mm and a thickness of 55 mm was obtained. No warpage was observed in this foam. The foam was then treated with Example 1
The same insect repellent nonwoven fabric sheet and the back material as in Example 1 were overlaid and used as a tatami floor, and the tatami mat was sewn and integrated on the front surface side with an automatic upholstering machine to produce a tatami mat. The obtained tatami had a concavely curved warp on the surface side.
【００２５】[0025]
【発明の効果】以上説明したように本発明の畳床は、ポ
リオレフィン系樹脂発泡体を主構成要素とする畳床に、
少なくとも長手方向に下面側が凹湾曲面となるような反
りを設けたことにより、本発明の畳床の表面に長手方向
に張力を加えながら畳表を縫着一体化した場合でも、畳
床が表面側に凹湾曲することがない。このため本発明の
畳は、畳の表面側へ凹湾曲した反りがなく、この結果、
きしみ音の発生や、歩行時につまずく等の問題を生じる
虞れがない。また接着剤を用いずに、畳床と畳表とを畳
表の弛みを生じることなく一体化できるため、接着剤臭
の問題がないとともに、接着剤の畳表表面への滲出し防
止対策を施す必要がなく、また畳表の張り替えも容易と
なる等の利点がある。As described above, the tatami floor of the present invention is a tatami floor mainly composed of a polyolefin resin foam.
Even if the tatami mat is sewn and integrated while applying tension in the longitudinal direction to the surface of the tatami mat according to the present invention, the tatami mat is provided with a warp such that the lower surface side has a concave curved surface at least in the longitudinal direction. No concave curve. For this reason, the tatami mat of the present invention has no concavely curved warp toward the surface side of the tatami mat, and as a result,
There is no fear that a problem such as generation of squeak noise or tripping during walking may occur. In addition, since the tatami floor and the tatami mat can be integrated without using an adhesive, without causing slack in the tatami mat, there is no problem of adhesive odor, and it is necessary to take measures to prevent the adhesive from seeping out onto the tatami mat surface. There is an advantage that the tatami surface can be easily replaced.
【図１】本発明の畳床の一例の長手方向に沿った縦断面
図である。FIG. 1 is a longitudinal sectional view of an example of a tatami floor of the present invention along a longitudinal direction.
【図２】最大反り値の測定方法を示す説明図である。FIG. 2 is an explanatory diagram illustrating a method of measuring a maximum warpage value.
【図３】本発明の畳の一例の長手方向に沿った縦断面図
である。FIG. 3 is a longitudinal sectional view of an example of the tatami mat according to the present invention along a longitudinal direction.
１ 畳床 ２ ポリオレフィン系樹脂発泡体 １ａ 凹湾曲 ８ 畳表 DESCRIPTION OF SYMBOLS 1 Tatami floor 2 Polyolefin resin foam 1a Concave curve 8 Tatami table
Claims (5)
ィン系樹脂発泡体からなる畳床であって、該畳床は少な
くとも長手方向に反りを有し、且つ下面側に反りによる
凹湾曲が形成されていることを特徴とする畳床。1. A tatami floor made of a polyolefin resin foam at least 85% of the total thickness, wherein the tatami floor has a warp at least in the longitudinal direction and a concave curve due to the warp on the lower surface side. The tatami floor is characterized by being made.
る請求項１記載の畳床。2. The tatami floor according to claim 1, wherein the maximum warp value in the longitudinal direction is 2 mm or more.
０．１ｇ／ｃｍ3 以下、曲げ試験による最大荷重が３０
ｋｇｆ以上のポリプロピレン系樹脂発泡体である請求項
１又は２記載の畳床。3. The polyolefin resin foam has a density of 0.1 g / cm 3 or less and a maximum load of 30 in a bending test.
The tatami floor according to claim 1, which is a polypropylene resin foam of kgf or more.
が１ｍｍ以上の反りを有する請求項１〜３のいずれかに
記載の畳床。4. The tatami floor according to claim 1, wherein the tatami floor has a maximum warp value of 1 mm or more in a direction orthogonal to the longitudinal direction.
表面側に、長手方向に張力を加えた状態で畳表が縫着一
体化されていることを特徴とする畳。5. A tatami mat, wherein a tatami mat is sewn and integrated on the surface side of the tatami mat floor according to any one of claims 1 to 4 in a state where tension is applied in a longitudinal direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7891797A JPH10252248A (en) | 1997-03-13 | 1997-03-13 | Straw mat bed and straw mat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7891797A JPH10252248A (en) | 1997-03-13 | 1997-03-13 | Straw mat bed and straw mat |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH10252248A true JPH10252248A (en) | 1998-09-22 |
Family
ID=13675215
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7891797A Pending JPH10252248A (en) | 1997-03-13 | 1997-03-13 | Straw mat bed and straw mat |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH10252248A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010261184A (en) * | 2009-05-01 | 2010-11-18 | Yuka Sansho Kenzai Kk | Tatami mat floor as building material and tatami mat placed thereon |
-
1997
- 1997-03-13 JP JP7891797A patent/JPH10252248A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010261184A (en) * | 2009-05-01 | 2010-11-18 | Yuka Sansho Kenzai Kk | Tatami mat floor as building material and tatami mat placed thereon |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4602442A (en) | Shoe insole and the manufacture thereof | |
| US5436064A (en) | Stiff fabric composite | |
| JPH10252248A (en) | Straw mat bed and straw mat | |
| JP2018104981A (en) | Laminated tatami surface and tatami using thereof | |
| JP5260037B2 (en) | Method for producing foamed resin molded product | |
| JP2006239015A (en) | Bag for storing exothermic composition and heating instrument using the same | |
| JP2002317548A (en) | Shock absorbing flooring | |
| JP7220612B2 (en) | Core material for tatami mats | |
| JP3020779B2 (en) | Method for laminating decorative board and laminating apparatus | |
| JP2594429Y2 (en) | Laminated sheet for thermoforming | |
| JP2000313080A (en) | Urethane foamed molded article and production thereof | |
| JP2000313081A (en) | Reinforcing material for urethane foam molding | |
| JP2003307024A (en) | Building material tatami mat floor | |
| KR102456971B1 (en) | High-weight carrier sheet for a diaper with hook type fastener | |
| JP2000170358A (en) | Core material for synthetic tatami mat, base for synthetic tatami mat and synthetic tatami mat | |
| JP2955200B2 (en) | Laminate | |
| CN215383051U (en) | Foldable floor mat | |
| JPH09309124A (en) | Integrally molded product of skin material and foaming polystyrene resin | |
| KR102217073B1 (en) | The cushion mat and manufacturing process of it's | |
| WO2023063257A1 (en) | Nonwoven fabric used for foamed article reinforcing material, foamed article reinforcing material, and method for producing nonwoven fabric used for foamed article reinforcing material | |
| JPS6313760Y2 (en) | ||
| JP2549536Y2 (en) | Tatami floor | |
| JP3203707U (en) | Artificial tatami mat | |
| JP2016154739A (en) | Carpet | |
| JP2000178521A (en) | Basic cloth for adhesive tape |