JP2005160582A

JP2005160582A - Body pressure distribution type cushion material

Info

Publication number: JP2005160582A
Application number: JP2003400735A
Authority: JP
Inventors: Koji Kobayashi; 弘司小林
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-11-28
Filing date: 2003-11-28
Publication date: 2005-06-23

Abstract

<P>PROBLEM TO BE SOLVED: To provide a body pressure distribution type cushion material whose cushion property is not damaged in use for a long period of time without bothering at the time of the use. <P>SOLUTION: For the cushion material, soft tuft to be tuft filaments 14 whose total fineness is ≥500dtex and which is constituted of many fibers whose single yarn fineness is <50dtex and hard tuft to be tuft threads 15 whose single fiber fineness is ≥500dtex are planted on a base layer 11a to be a flexible base material. When a body pressure acts on the cushion material, though the soft tufts are bent and deformed, the hard tufts are not easily bent and deformed, are projectes from between the soft tufts like spikes and demonstrate elastically strong bending resistance, and the body pressure is distributed through the scattered hard tufts. The cushion material 16 may be constituted of a tuft cushion layer 13 of a three-layer laminated structure of two upper and lower base layers 11a and 11b and a tuft layer 12 by making the base layer 11 into two upper and lower layers and planting tufts on one base layer. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

本発明は、枕（ベッドレスト）、肘掛け（アームレスト）、背凭れ（バックレスト）、座椅子、椅子、座席、寝台（ベッド）、座布団、敷布団、マットレス等の身体を載せて使用されるクッション性を有する物品の基材（ベース）や被覆材（カバー）（以下、これらを“クッション体”と総称する。）に関するものである。 The present invention relates to a cushion used by placing a body such as a pillow (bedrest), armrest (armrest), backrest (backrest), sitting chair, chair, seat, bed (bed), cushion, mattress, mattress, etc. The present invention relates to a base material (base) and a covering material (cover) (hereinafter collectively referred to as “cushion body”) of an article having properties.

この種のクッション体には、繊維ウエブにニードルパンチングを施したり、バインダーを付与して繊維間を連結した厚さ１５〜１００ｍｍの繊維堆積不織布や発泡体等の多孔質クッション材１７が使用されている。多孔質クッション材１７では、その上に載せた身体から受ける荷重（以下、“体圧”と言う。）に応じて生じる窪みの全体に体圧が分散する。しかし、繊維堆積不織布に成る多孔質クッション材１７では、それを構成している繊維が三次元方向に、即ち、縦横と厚み方向に連続しており、又、発泡体に成る多孔質クッション材１７では、気泡セル壁を構成している樹脂皮膜が三次元方向に連続しているので、体圧によって多孔質クッション材１７に生じる窪みは、その身体の触れる部分だけではなく、その身体の触れる部分の周辺にも連続して生じ、その結果、多孔質クッション材１７は、全体が圧縮されて薄く変形した形状となる。このため、多孔質クッション材１７では、ただ体圧が多孔質クッション材１７の全体に掛かったと言うだけであり、その体圧に対抗して生じる多孔質クッション材１７の圧縮弾性回復力が、それに触れる身体の細部に身体の起伏に応じて均等に作用するようには変形しない。 For this type of cushion body, a porous cushioning material 17 such as a fiber-deposited nonwoven fabric or foam having a thickness of 15 to 100 mm in which a fiber web is subjected to needle punching or a binder is applied to connect the fibers is used. Yes. In the porous cushion material 17, the body pressure is dispersed in the entire depression generated according to the load (hereinafter referred to as “body pressure”) received from the body placed thereon. However, in the porous cushion material 17 made of a fiber-deposited nonwoven fabric, the fibers constituting the porous cushion material 17 are continuous in the three-dimensional direction, that is, in the vertical and horizontal directions and the thickness direction, and the porous cushion material 17 made of a foam. Then, since the resin film constituting the bubble cell wall is continuous in the three-dimensional direction, the dent generated in the porous cushion material 17 due to body pressure is not only the part touched by the body but also the part touched by the body. As a result, the entire porous cushion material 17 is compressed and thinly deformed. For this reason, in the porous cushion material 17, the body pressure is merely applied to the entire porous cushion material 17, and the compression elastic recovery force of the porous cushion material 17 generated against the body pressure is It does not deform so that the details of the touching body act evenly according to the undulations of the body.

ウイルトンカーペットやタフテッドカーペット等の厚手のパイル地は、クッション性を有するものであるが、そのクッション性は、繊維堆積不織布や発泡体のそれとは異なる。何故なら、パイル地のクッション性は、縦横には連続せず厚み方向にだけ連続するパイル（繊維）の座屈抗力に起因するものであり、それに身体を載せて生じる窪みは、その身体に触れる部分のパイルが座屈して生じるものであり、その身体に触れる部分の周辺のパイルまでもが座屈変形することはなく、パイル地全体が薄く変形することはないからである。そのように、身体に触れる部分のパイルが個々独立して座屈変形するので、厚手のパイル地に作用する体圧は均等に分散される。上下二重に織編される２枚の基布（基層）を連結糸（パイル糸）で連結して織編されるダブルパイル織物原反やダブルパイル編物原反は、その連結している連結糸（パイル糸）も、パイル地のパイルと同様に個々独立して座屈変形し、それに作用する体圧が均等に分散されるので、身体を載せて使用するクッション材には好適とされている（例えば、特許文献１参照）。そのように、体圧が均等に分散されるクッション材は、特に“体圧分散型クッション材”と称されている。体圧分散型クッション材としては、発泡体ビーズを袋状外装体に装填したものが公知である（例えば、特許文献２参照）。
特開２００３−２７８０６０号公報特開平１１−２４４３４２号公報 Thick piles such as Wilton carpets and tufted carpets have cushioning properties, but the cushioning properties are different from those of fiber-laid nonwoven fabrics and foams. This is because the pile cushioning is caused by the buckling resistance of piles (fibers) that are not continuous vertically and horizontally but only in the thickness direction. This is because the pile of the portion is buckled and the pile around the portion touching the body does not buckle and deform, and the entire pile ground does not deform thinly. In this way, the piles that touch the body are individually buckled and deformed, so that the body pressure acting on the thick pile ground is evenly distributed. Double pile fabric and double pile knitted fabrics that are woven and knitted by connecting two base fabrics (base layers) that are woven and knitted doubly with connecting yarns (pile yarns) Yarn (pile yarn) is also buckled and deformed independently like the pile pile, and the body pressure acting on it is evenly distributed, so it is suitable for cushioning materials used on the body. (For example, refer to Patent Document 1). As described above, the cushion material in which the body pressure is evenly distributed is particularly referred to as “body pressure dispersion type cushion material”. As the body pressure dispersion type cushioning material, a material in which foam beads are loaded in a bag-like exterior body is known (for example, see Patent Document 2).
JP 2003-278060 A Japanese Patent Laid-Open No. 11-244342

前記特許文献１に記載のダブルパイル織物原反やダブルパイル編物原反、或いは、厚手のパイル地をクッション材に使用し、その上に身体を長時間載せておくと、体圧によって生じた窪みが恰も身体の起伏に応じてプレス成形されたかのようにセットされてしまうので、そのクッション性が失われる。前記特許文献２に記載の袋状外装体に発泡体ビーズを装填したクッション体では、その使用の際に発泡体ビーズ即ち弾性素子を移動させ、その表面を平らに均し直さなければならず、その使用が煩わしくなる。 The double pile woven fabric or double pile knitted fabric described in Patent Document 1 or a thick pile fabric is used as a cushioning material, and the body is placed on it for a long time. However, since the bag is set as if it was press-molded according to the undulations of the body, its cushioning property is lost. In the cushion body in which the foam beads are loaded in the bag-shaped exterior body described in Patent Document 2, the foam beads, that is, the elastic elements must be moved during the use thereof, and the surface thereof must be leveled flat. Its use becomes cumbersome.

本発明は、使用に際して格別手を煩わすことがなく、長時間の使用においてクッション性が損なわれることのない体圧分散型クッション材を提供することを目的とする。 An object of the present invention is to provide a body pressure dispersion type cushion material that does not bother a special case during use and that does not impair the cushioning property during long-time use.

本発明に係る体圧分散型クッション材は、単糸繊度５０ｄｔｅｘ未満の多数の繊維によって構成される総繊度５００ｄｔｅｘ以上の立毛糸条１４に成る立毛と、単糸繊度５００ｄｔｅｘ以上の立毛線条１５に成る立毛を、可撓性基材に成る基層１１ａに植設して成り、それらの立毛の基層１１ａからの長さが同じであって７〜２５ｍｍであることを第１の特徴とする。 The body pressure dispersion type cushioning material according to the present invention is provided with napped yarns consisting of a plurality of fibers having a single yarn fineness of less than 50 dtex and having napped yarns 14 having a total fineness of 500 dtex or more, and napped filaments 15 having a single yarn fineness of 500 dtex or more. The first feature is that the raised hairs are planted on a base layer 11a which is a flexible substrate, and the lengths of the raised hairs from the base layer 11a are the same and are 7 to 25 mm.

本発明に係る体圧分散型クッション材の第２の特徴は、可撓性基材に成る上下２つの基層１１ａ・１１ｂと、それらの基層１１ａ・１１ｂの間に挟まれる立毛層１２による３層積層構造の立毛クッション層１３が形成されており、立毛層１２が単糸繊度５０ｄｔｅｘ未満の多数の繊維によって構成される総繊度５００ｄｔｅｘ以上の立毛糸条１４と単糸繊度５００ｄｔｅｘ以上の立毛線条１５によって形成されており、その立毛糸条１４と立毛線条１５が上下２つの基層１１ａ・１１ｂの中の少なくとも一方の基層１１ａに係止され、その一方の基層１１ａから他方の基層１１ｂに向けて起立した立毛を立毛糸条１４と立毛線条１５が形成して立毛層１２に混在しており、立毛層１２において立毛線条１５の立毛と立毛の間が立毛糸条１４の立毛によって充填されており、立毛線条１５の立毛と立毛糸条１４の立毛が立毛層１２において触れ合っており、それらの立毛の基層１１からの長さが同じであって７〜２５ｍｍであることを第２の特徴とする。 The second feature of the body pressure dispersion type cushioning material according to the present invention is that three layers are formed by two upper and lower base layers 11a and 11b, which are flexible base materials, and a raised layer 12 sandwiched between the base layers 11a and 11b. The napped cushion layer 13 having a laminated structure is formed, and the napped layer 12 is composed of a large number of fibers having a single yarn fineness of less than 50 dtex, and the napped yarn 14 having a total fineness of 500 dtex or more and a napped filament 15 having a single yarn fineness of 500 dtex or more. The raised yarns 14 and the raised filaments 15 are locked to at least one of the upper and lower base layers 11a and 11b, and from one base layer 11a to the other base layer 11b. The raised nap 14 and the napped filament 15 are formed and mixed in the napped layer 12, and the napped layer 12 has a nap between the napped and the napped in the napped layer 12. It is filled with bristles, and the naps of the napped filaments 15 and the naps of the napped yarns 14 touch each other in the napped layer 12, and the lengths from the base layer 11 of these nappeds are the same and are 7 to 25 mm. Is the second feature.

本発明に係る体圧分散型クッション材の第３の特徴は、上記第２の特徴に加えて、パイル地、繊維堆積不織布、発泡樹脂地の何れかに成る多孔質クッション材１７が、立毛糸条１４と立毛線条１５に成る立毛層１２と、上下２つの基層１１ａ・１１ｂに成る３層積層構造の立毛クッション層１３に重ねて積層されている点にある。 The third feature of the body pressure dispersion type cushioning material according to the present invention is that, in addition to the second feature, the porous cushioning material 17 made of any one of a pile fabric, a fiber-laid nonwoven fabric, and a foamed resin fabric is a napped yarn. It is in the point which is piled up and piled up on the napping layer 12 of the three-layer laminated structure which consists of the upper and lower two base layers 11a and 11b.

本発明に係る体圧分散型クッション材の第４の特徴は、上記第２および第３の何れかの特徴に加えて、立毛層１２を構成する立毛糸条１４と立毛線条１５が、立毛層１２を間に挟む２つの基層１１ａ・１１ｂの中の一方の基層１１ａに係止されたパイル（立毛）を形成しており、その係止する基層１１ａと立毛層１２がパイル地１９を形成している点にある。 The fourth feature of the body pressure dispersion type cushion material according to the present invention is that, in addition to any of the second and third features, the napped yarn 14 and the napped filament 15 constituting the napped layer 12 are napped. A pile (napped) is formed on one of the two base layers 11a and 11b with the layer 12 interposed therebetween, and the napped base layer 11a and the napped layer 12 form a pile base 19 It is in the point.

本発明に係る体圧分散型クッション材の第５の特徴は、上記第２、第３および第４の何れかの特徴に加えて、立毛糸条１４に成るパイル（立毛）と立毛線条１５に成るパイル（立毛）を基層１１ａに植設して成るパイル地１９が２回以上折り返されて３層以上の積層構造を構成しており、その積層の中間層のパイルが立毛層１２を形成している点にある。 The fifth feature of the body pressure dispersion type cushioning material according to the present invention is that, in addition to any of the second, third and fourth features, a pile (puffed) consisting of napped yarns 14 and napped filaments 15 are provided. A pile ground 19 formed by planting piles (rabbled hairs) in the base layer 11a is folded twice or more to form a laminated structure of three or more layers, and the pile of the intermediate layer of the laminated layers forms the raised layer 12 It is in the point.

本発明に係る体圧分散型クッション材の第６の特徴は、上記第２、第３、第４および第５の何れかの特徴に加えて、袋状に仕立てられた表装カバー２１によって外面が被覆されており、その表装カバー２１の生地が外側の立毛クッション層の基層１１を構成している点にある。 The sixth feature of the body pressure dispersion type cushioning material according to the present invention is that, in addition to any of the second, third, fourth and fifth features, the outer surface is provided by a cover cover 21 tailored in a bag shape. It is covered, and the cloth of the cover cover 21 constitutes the base layer 11 of the outer raised cushion layer.

本発明に係る体圧分散型クッション材の第７の特徴は、上記第１、第２、第３、第４、第５および第６の何れかの特徴に加えて、単糸繊度５０ｄｔｅｘ未満の多数の繊維によって構成される総繊度５００ｄｔｅｘ以上の立毛糸条１４に成る立毛Ｐ１４と、単糸繊度５００ｄｔｅｘ以上の立毛線条１５に成る立毛Ｐ１５が、それぞれ２群の立毛群Ｐ１４−１・Ｐ１５−１と立毛群Ｐ１４−２・Ｐ１５−２に分かれており、その第１群の立毛糸条１４−１に成る立毛Ｐ１４−１および立毛線条１５−１に成る立毛Ｐ１５−１と第２群の立毛糸条１４−２に成る立毛Ｐ１４−２および立毛線条１５−２に成る立毛Ｐ１５−２が、その各群毎にタフテッド機のニードル２６によってステッチ方向を変えて可撓性基材に成る基層１１に植設されたものであり、それらの立毛Ｐ１４−１・Ｐ１５−１・Ｐ１４−２・Ｐ１５−２に対して反対側となる基層１１の裏面に形成される第１群の立毛糸条１４−１と立毛線条１５−１のバックステッチ２５−１と第２群の立毛糸条１４−２と立毛線条１５−２のバックステッチ２５−２が交叉しており、それらの立毛Ｐ１４−１・Ｐ１５−１・Ｐ１４−２・Ｐ１５−２の基層１１からの長さが同じであって７〜２５ｍｍである点にある。 In addition to any of the first, second, third, fourth, fifth and sixth features, the seventh feature of the body pressure dispersion type cushion material according to the present invention is that the single yarn fineness is less than 50 dtex. Napped p14 consisting of napped yarns 14 having a total fineness of 500 dtex or more, and napped p15 consisting of napped filaments 15 having a single yarn fineness of 500 dtex or more, each consisting of two raised groups P14-1 and P15- 1 and napped groups P14-2 and P15-2, the napped p14-1 that forms the napped yarn 14-1 and the napped p15-1 that forms the napped filament 15-1 and the second group. The napped p14-2 formed of the napped yarn 14-2 and the napped P15-2 formed of the napped filament 15-2 are changed into a flexible base material by changing the stitch direction by the needle 26 of the tufted machine for each group. It was planted in the base layer 11 The first group of raised yarns 14-1 and the raised filaments 15 formed on the back surface of the base layer 11 on the opposite side to the raised fibers P14-1, P15-1, P14-2, P15-2. -1 back stitch 25-1, the second group of napped yarns 14-2 and the back stitch 25-2 of the napped filaments 15-2 intersect, and these napped p14-1, P15-1, and p14 -2 · P15-2 has the same length from the base layer 11 and is 7 to 25 mm.

単糸繊度５０ｄｔｅｘ未満の多数の繊維によって構成される総繊度５００ｄｔｅｘ以上の立毛糸条１４に成る立毛と、単糸繊度５００ｄｔｅｘ以上の立毛線条１５に成る立毛を、可撓性基材に成る基層１１ａに植設して成り、それらの立毛の基層１１ａからの長さが同じであって７〜２５ｍｍである体圧分散型クッション材は、その構造が基層１１ａから立毛が突出し立毛層１２を形成している点において、慣用されるパイルカーペットに近似している。しかし、パイルカーペットには肌触りのよい柔軟可撓な風合いが要求され、その立毛層（パイル層）は、単糸繊度５０ｄｔｅｘ未満の多数の繊維によって構成されていて嵩高に脹らんだ総繊度５００ｄｔｅｘ以上の柔軟可撓なマルチフイラメント糸や紡績糸に成る立毛糸条によって構成されている。その点、本発明の体圧分散型クッション材は、慣用されるパイルカーペットと異なり、その立毛層１２が単糸繊度５０ｄｔｅｘ未満の多数の繊維によって構成される総繊度５００ｄｔｅｘ以上の立毛糸条１４だけではなく、その立毛糸条１４に比して遙に剛直な単糸繊度５００ｄｔｅｘ以上の立毛線条１５によっても構成されている。 A base layer comprising a flexible base material consisting of napped yarns consisting of a plurality of fibers having a single yarn fineness of less than 50 dtex and consisting of napped yarns 14 having a total fineness of 500 dtex or more and napped yarns consisting of napped filaments 15 having a single yarn fineness of 500 dtex or more. The body pressure dispersion type cushioning material having the same length from the base layer 11a of the nappings and having a length of 7 to 25 mm is formed by projecting the nappings from the base layer 11a to form the napping layer 12 In that respect, it is similar to a conventional pile carpet. However, the pile carpet is required to have a soft and flexible texture that is soft to the touch, and the raised layer (pile layer) is composed of a large number of fibers with a single yarn fineness of less than 50 dtex and has a total fineness of 500 dtex or more. It is comprised by the napped yarn which becomes a soft flexible multifilament yarn and spun yarn. In that respect, the body pressure dispersion type cushioning material of the present invention is different from a pile carpet used in the past, and only the raised yarns 14 having a total fineness of 500 dtex or more, in which the raised layer 12 is composed of a large number of fibers having a single yarn fineness of less than 50 dtex. Instead, it is also constituted by napped filaments 15 having a single yarn fineness of 500 dtex or more, which is stiffer than the napped yarns 14.

このため、本発明の体圧分散型クッション材の立毛層１２に体圧が作用するとき、単糸繊度５０ｄｔｅｘ未満の多数の繊維によって構成される総繊度５００ｄｔｅｘ以上の立毛糸条１４に成る立毛が、慣用されるパイルカーペットの立毛と同様に容易に座屈変形するものの、単糸繊度５００ｄｔｅｘ以上の立毛線条１５に成る立毛は容易には座屈変形せず、それが立毛糸条１４の立毛の間からスパイクの如く突き出て弾性的に強い座屈抗力を発揮する。即ち、その剛直な立毛線条１５の立毛（以下“硬質立毛”と言う。）は、それと一緒に混在する柔軟可撓な立毛糸条１４の立毛（以下“軟質立毛”と言う。）によって個々に引き離されるように立毛層１２に点在し、体圧に対抗する強い座屈抗力を発揮する。そのように、体圧は、軟質立毛（１４）によって個々に引き離されて点在する硬質立毛（１５）から受ける強い座屈抗力に主として支えられることになり、その主として支える個々離れて独立している弾性素子である硬質立毛（１５）に分散されるので体圧分散性に優れた体圧分散型クッション材が得られる。 For this reason, when body pressure acts on the napped layer 12 of the body pressure dispersion type cushioning material of the present invention, napped fibers comprising napped yarns 14 having a total fineness of 500 dtex or more constituted by a large number of fibers having a single yarn fineness of less than 50 dtex are present. However, it is easy to buckle and deform in the same manner as a conventional pile carpet napping, but the naps of napped filaments 15 having a single yarn fineness of 500 dtex or more are not easily buckled and deformed. It sticks out like a spike and exhibits a strong buckling resistance elastically. In other words, the nappings of the rigid napped filaments 15 (hereinafter referred to as “hard nappings”) are individually provided by the nappings of soft and flexible napping yarns 14 (hereinafter referred to as “soft nappings”) mixed therewith. Scattered in the raised layers 12 so as to be separated from each other, and exhibits a strong buckling resistance against body pressure. As such, the body pressure is mainly supported by the strong buckling resistance received from the hard nappings (15) that are individually separated by the soft nappings (14) and scattered independently. Therefore, a body pressure dispersion type cushioning material excellent in body pressure dispersibility can be obtained.

その硬質立毛（１５）が軟質立毛（１４）の間からスパイクの如く突き出るとしても、硬質立毛（１５）は、基層１１から起立していて座屈変形する材料力学上の一種の長柱であり、弾性的に座屈変形する一種のパイル立毛であるから、それに肌身が触れても突き刺さるような刺痛感を与えない。そして、体圧を受けるとき、硬質立毛（１５）が強い座屈抗力を発揮するので、軟質立毛（１４）が押し潰され、立毛層１２が緻密化して蒸れ易くなるようなことはなく、長時間の使用において清涼な爽快感を与える点でも、本発明の体圧分散型クッション材は実用的である。 Even if the hard napping (15) protrudes like a spike from between the soft nappings (14), the hard napping (15) is a kind of long column in material mechanics that stands up from the base layer 11 and buckles and deforms. Since it is a kind of pile nap that elastically buckles and deforms, it does not give a tingling sensation that pierces even if it touches the skin. And when receiving body pressure, since the hard napping (15) exhibits a strong buckling resistance, the soft napping (14) is not crushed, and the napping layer 12 does not become dense and easily stuffy. The body pressure dispersion type cushion material of the present invention is also practical in that it provides a refreshing and refreshing feeling when used over time.

このような体圧分散性は、２つの基層１１・１１と、その基層１１から起立した立毛で構成される立毛層１２から成る立毛クッション層１３に成る本発明の体圧分散型クッション材１６の場合も同様である。何故なら、その立毛クッション層１３の構造は、そのクッション性を発揮する弾性素子が基層１１から起立した立毛によって構成されている点において、ダブルパイル織物原反やダブルパイル編物原反の構造に近似し、それに作用する体圧は、立毛層を構成している個々の弾性素子（立毛）に分散され、そのクッション性は、個々独立した弾性素子（立毛）の座屈変形に対抗する座屈抗力に起因して生じる。従って、本発明のクッション材１６は、前記特許文献１に記載のものと同様に体圧分散性に優れたものとなる。 Such body pressure dispersibility of the body pressure dispersion type cushioning material 16 of the present invention comprising the two base layers 11, 11 and the napped cushion layer 13 composed of the napped layers 12 erected from the base layer 11. The same applies to the case. This is because the structure of the napped cushion layer 13 is similar to the structure of a double-pile woven fabric or a double-pile knitted fabric in that the elastic element exhibiting the cushioning property is constituted by napped raised from the base layer 11. The body pressure acting on it is distributed to the individual elastic elements (napped) constituting the napped layer, and its cushioning property is a buckling resistance against the buckling deformation of each independent elastic element (napped). Caused by Therefore, the cushioning material 16 of the present invention has excellent body pressure dispersibility, similar to that described in Patent Document 1.

加えて、本発明のクッション材１６は、前記特許文献１に記載のものと異なり、その立毛層１２には立毛糸条１４と立毛線条１５が混在しており、その単糸繊度からして、立毛糸条１４の立毛は、慣用されるカーペットのパイルと同程度に嵩高に脹らんでいて柔軟可撓性に豊み、それが体圧を受けるときは容易に座屈変形し、その個々の立毛の座屈抗力が微弱なものであることからして格別座屈抗力を発揮しない。それに対して、立毛線条１５の立毛は、その単糸繊度からして、慣用される人工芝生のパイル（葉茎）と同等、或いは、それ以上に剛直であり、体圧を受けても容易には座屈変形せず、立毛糸条１４の立毛の間からスパイクの如く突き出て弾性的に強い座屈抗力を発揮する。即ち、硬質立毛（１５）は、それと一緒に混在する軟質立毛（１４）によって個々に引き離されるように立毛層１２に点在し、体圧に対抗する強い座屈抗力を発揮する。 In addition, the cushioning material 16 of the present invention is different from the one described in Patent Document 1, and the napped layer 12 has napped yarns 14 and napped filaments 15 in a mixed state. The raised yarn of the raised yarn 14 swells as bulky as a conventional carpet pile, and is flexible and flexible. When it receives body pressure, it easily buckles and deforms. Because of the weak buckling resistance of napped hair, it does not exhibit exceptional buckling resistance. On the other hand, the napping of the napped filament 15 is equal to or more rigid than the conventional artificial lawn pile (leaf stem) because of its single yarn fineness, and is easy to receive body pressure. No buckling deformation occurs, and it protrudes like a spike from between the nappings of the napped yarn 14 and exerts an elastically strong buckling resistance. That is, the hard nappings (15) are scattered in the napping layers 12 so as to be individually separated by the soft nappings (14) mixed therewith, and exert a strong buckling resistance against body pressure.

特に、軟質立毛Ｐ１４と硬質立毛Ｐ１５が、それぞれ２群の立毛群Ｐ１４−１・Ｐ１５−１と立毛群Ｐ１４−２・Ｐ１５−２に分かれ、それぞれステッチ方向を変えて植設されたものでは、そのステッチ方向の異なる第１群の硬質立毛Ｐ１５−１と第２群の硬質立毛Ｐ１５−２が重複する部分と重複しない部分と、第１群の軟質立毛Ｐ１４−１と第２群の軟質立毛Ｐ１４−２が重複する部分と重複しない部分が立毛層１２に生じ、第１群の硬質立毛Ｐ１５−１と第２群の硬質立毛Ｐ１５−２が重複する部分では座屈抗力が強まる一方、第１群の軟質立毛Ｐ１４−１と第２群の軟質立毛Ｐ１４−２が重複する部分では第１群の硬質立毛Ｐ１５−１と第２群の硬質立毛Ｐ１５−２の間が離れて座屈抗力が弱まるので、立毛層１２に占める軟質立毛Ｐ１４と硬質立毛Ｐ１５の比率や、立毛層１２を構成する軟質立毛Ｐ１４と硬質立毛Ｐ１５の目付け（使用量）が、軟質立毛Ｐ１４と硬質立毛Ｐ１５が２群の立毛群Ｐ１４−１・Ｐ１５−１と立毛群Ｐ１４−２・Ｐ１５−２に分かれることなく立毛層１２を構成している場合と同じであっても、クッション材１６の体圧分散性が高まる。尚、その第１群の立毛糸条１４−１と立毛線条１５−１および第２群の立毛糸条１４−２と立毛線条１５−２は、それぞれ引き揃えられ或いは合撚されて一体になった複合糸条４５−１（４５−２）を構成するものであってもよい（図８参照）。 In particular, soft napping P14 and hard napping P15 are divided into two napping groups P14-1 and P15-1 and napping groups P14-2 and P15-2, respectively, and are planted by changing the stitch direction. A portion where the first group of hard raised p15-1 and the second group of hard raised p15-2 are different from each other and a portion where the second group of hard raised p15-2 overlaps, a first group of soft raised p14-1 and a second group of soft raised While the part where P14-2 overlaps and the part which does not overlap occur in the raised layer 12, the portion where the first group of hard raised p15-1 and the second group of hard raised P15-2 overlap increases the buckling resistance, In a portion where the first group of soft nappings P14-1 and the second group of soft nappings P14-2 overlap, the first group of hard nappings P15-1 and the second group of hard nappings P15-2 are separated and buckling resistance Softened napping in the napped layer 12 14 and hard napping P15, and the weight (use amount) of the soft napping P14 and the hard napping P15 constituting the napping layer 12, the napping groups P14-1 and P15-1 having two soft napping P14 and hard napping P15. Even if it is the same as the case where the napped layer 12 is comprised without being divided into napped groups P14-2 and P15-2, the body pressure dispersibility of the cushion material 16 is increased. The first group of napped yarns 14-1 and the napped filaments 15-1 and the second group of napped yarns 14-2 and the napped filaments 15-2 are respectively integrated by being aligned or twisted. The composite yarn 45-1 (45-2) may be configured (see FIG. 8).

本発明のクッション材１６は、強い座屈抗力を発揮する弾性素子の硬質立毛（１５）が軟質立毛（１４）に引き離されて点在する点において、前記特許文献２に記載のものと同様に体圧分散性に優れたものとなる。そして、本発明のクッション材１６では、その体圧に対抗して弾性変形する弾性素子が、前記特許文献２の発泡体ビーズのように三次元方向に弾性変形するものではなく、軟質立毛（１４）に囲まれて一次元方向に、即ち、クッション材１６の厚み方向に弾性的に座屈変形する立毛（パイル）であり、而も、前記特許文献２の発泡体ビーズのように立毛層の中で移動するようなことはない。 The cushion material 16 of the present invention is similar to that described in Patent Document 2 in that the hard napping (15) of the elastic element that exhibits a strong buckling resistance is scattered by the soft napping (14). Excellent body pressure dispersibility. In the cushion material 16 of the present invention, the elastic element that elastically deforms against the body pressure is not elastically deformed in a three-dimensional direction like the foam bead of Patent Document 2, but soft napping (14 ) In the one-dimensional direction, i.e., in the thickness direction of the cushion material 16, the napped (pile) elastically buckled and deformed. There is no such thing as moving inside.

本発明によるクッション性が弾性素子（立毛１４と立毛１５）の座屈変形に起因する点において前記特許文献１に記載のクッション材に近似し、体圧分散性が疎らに点在する弾性素子（硬質立毛１５）に起因する点において前記特許文献２に記載のクッション材に近似し、それぞれ特性の異なるこれら弾性素子の形態が異なる前記特許文献１に記載のクッション材と前記特許文献２に記載のクッション材とが複合して特異なクッション性と体圧分散性を発揮し、而も、前記特許文献１に記載のクッション材と異なり弾性素子（立毛１４と立毛１５）がへたり（押圧セット）難く、又、前記特許文献２に記載のクッション材と異なり弾性素子（立毛１４と立毛１５）が移動することもなく、従って、使用に際して表面を平らに均し直すのに手間取るようなことはなく、かくして、使い勝手のよい体圧分散型クッション材が得られる。 The elastic element in which the cushioning property according to the present invention is similar to the cushioning material described in Patent Document 1 in terms of the fact that the cushioning property is caused by the buckling deformation of the elastic elements (the raised hairs 14 and the raised hairs 15). The cushion material described in Patent Document 1 described in Patent Document 2 and the cushion material described in Patent Document 2 are similar to the cushion material described in Patent Document 2 in terms of the hard napping 15), and are different in the form of these elastic elements having different characteristics. Combined with the cushioning material, it exhibits unique cushioning and body pressure dispersibility, and unlike the cushioning material described in Patent Document 1, the elastic elements (the raised hairs 14 and the raised hairs 15) sag (press set). Unlike the cushion material described in Patent Document 2, the elastic elements (the raised hairs 14 and the raised hairs 15) do not move. Therefore, it is troublesome to level the surface in use. Not so that thing, thus, easy to use pressure dispersion type cushioning material is obtained.

材料力学において、立毛（パイル）は一種の長柱であり、その軸芯（長さ）方向に作用する体圧によって立毛（長柱）が折れ曲がる現象は、材料力学における座屈である。従って、本発明において“座屈変形”とは、その長さ方向に作用する体圧によって立毛が弾性的に折れ曲がって変形することを意味し、“座屈抗力”とは、そのように座屈変形しないように体圧に対抗して立毛が発揮する反力を意味する。 In material mechanics, napped (pile) is a kind of long column, and the phenomenon that napped (long column) is bent by the body pressure acting in the axial direction (length) is buckling in material mechanics. Accordingly, in the present invention, “buckling deformation” means that the nap is elastically bent and deformed by the body pressure acting in the length direction, and “buckling resistance” means such buckling. It means the reaction force that the raised hairs exert against the body pressure so as not to deform.

本発明において、立毛糸条は、その軟質立毛（Ｐ１４）が立毛層１２に点在する硬質立毛（Ｐ１５）と硬質立毛（Ｐ１５）の間の空隙を充填し（埋め尽くし）、体圧を受けて押し倒されたり座屈変形しないように硬質立毛（Ｐ１５）を周りから弾性的に支える補強材として、又、体圧が身体に触れる個々の硬質立毛（Ｐ１５）に細かく分散されるように硬質立毛と硬質立毛の間を引き離す分散材として適用される。言い換えれば、圧縮弾性回復力によって厚みが弾性的に維持される単糸繊度が５０ｄｔｅｘ未満の繊維によって構成されるパイルカーペットのパイル層に埋め込むように硬質立毛（Ｐ１５）を基層１１に植設し、その単糸繊維が５０ｄｔｅｘ未満の軟質立毛の構成するパイル層の内部において硬質立毛が座屈抗力を発揮するようにする。 In the present invention, the napped yarn fills (fills up) the space between the hard napped (P15) and the hard napped (P15) where the soft napped (P14) is scattered in the napped layer 12, and receives body pressure. As a reinforcing material that elastically supports the hard napping (P15) from the surroundings so that it is not pushed down or buckled and deformed, and so that the body pressure is finely distributed to the individual hard napping (P15) that touches the body It is applied as a dispersion material that separates between hard and napped. In other words, hard napping (P15) is implanted in the base layer 11 so as to be embedded in a pile layer of a pile carpet composed of fibers having a single yarn fineness of less than 50 dtex, the thickness of which is elastically maintained by the compression elastic recovery force, In the pile layer that the single yarn fiber is composed of soft nappings of less than 50 dtex, the hard nappings exhibit a buckling resistance.

本発明において、立毛糸条１４を構成する繊維の単糸繊度を５０ｄｔｅｘ未満にするのは、その構成する軟質立毛（Ｐ１４）が、格別強い座屈抗力を発揮することなく、硬質立毛（Ｐ１５）の間を充填して硬質立毛（Ｐ１５）が立毛層１２に均等に点在するようにし、その点在する硬質立毛（Ｐ１５）に体圧が均等に分散するようにするためである。そのためには、立毛糸条（軟質立毛Ｐ１４）を構成する繊維の単糸繊度を、パイルカーペットのパイルを構成する繊維の単糸繊度と同様に細くし、概して２０ｄｔｅｘ未満にする。それに対し、立毛糸条（軟質立毛Ｐ１４）の総繊度を５００ｄｔｅｘ以上にするのは、それによって硬質立毛相互間（Ｐ１５・Ｐ１５）が引き離されるようにするためである。そのためには、立毛糸条（軟質立毛Ｐ１４）の総繊度を、立毛線条（硬質立毛Ｐ１５）の総繊度と同等以上にするとよい。立毛線条１５には座屈抗力の異なる複数種類の線条を用いるとよい。そうすると、体圧は座屈抗力の大きい硬質立毛から座屈抗力の小さい硬質立毛へと時を経るにつれて次第（経時的）に分散され、クッション材１６の体圧の作用する部分が経時的に沈み込むので、本発明のクッション材１６は身体を載せて心地よい感触を与えることになる。 In the present invention, the single yarn fineness of the fibers constituting the napped yarn 14 is less than 50 dtex because the soft napped (P14) constituting the hard napped (P15) does not exhibit a particularly strong buckling resistance. This is because the hard nap (P15) is evenly scattered in the napped layer 12 by filling the space, and the body pressure is evenly dispersed in the napped hard nap (P15). For this purpose, the single yarn fineness of the fibers constituting the napped yarn (soft napped P14) is reduced to be the same as the single yarn fineness of the fibers constituting the pile of the pile carpet, and generally less than 20 dtex. On the other hand, the total fineness of the napped yarn (soft napped P14) is set to 500 dtex or more so that the hard napped (P15 and P15) are separated from each other. For this purpose, the total fineness of the napped yarn (soft napped P14) may be equal to or greater than the total fineness of the napped filament (hard napped P15). A plurality of types of filaments having different buckling resistances may be used for the napped filaments 15. As a result, the body pressure is gradually dispersed over time from the hard napping having a large buckling resistance to the hard napping having a small buckling resistance, and the portion on which the body pressure acts on the cushion material 16 sinks with time. Therefore, the cushioning material 16 of the present invention gives a comfortable feeling on the body.

硬質立毛が、短か過ぎるときは弾性的に座屈変形し難く、又、長過ぎても傾倒するだけで弾性的に座屈変形し難くなる。この点を考慮して、立毛の基層１１からの長さ（立毛層の厚み）を７〜２５ｍｍに、好ましくは７〜１５ｍｍに、更に好ましくは１０ｍｍ前後（８〜１２ｍｍ）にする。立毛線条１５に最適の素材はスパンデックス等の弾性繊維糸条である。立毛線条１５は、人工芝生のパイル糸のようにモノフィラメント糸（テープヤーン）でもよいが、マルチフィラメント糸や紡績糸のように多数の繊維によって構成される多繊糸条にバインダーを付与し、その繊維間を接着して総繊度５００ｄｔｅｘ以上の単糸とした樹脂加工糸の方がよい。何故なら、バインダーによって、繊維自体が有しない物性を立毛線条１５に付与することが出来るからである。バインダーには、熱融着性繊維や液状樹脂組成物が使用されるが、立毛線条１５の座屈変形に対する弾性回復力を高めるうえでは、ウレタン樹脂や天然ゴム、合成ゴムその他の弾性樹脂組成物を使用するとよい。マルチフィラメント糸や紡績糸のように多数の繊維によって構成される多繊糸条にバインダーを付与して立毛線条１５を構成する場合、そのバインダーを部分的に多繊糸条に付与することも出来る。そのようにバインダーを部分的に付与した樹脂加工糸では、スペースダイ糸（部分異色染色糸）のように、その長さ方向に立毛糸条１４を構成する部分と立毛線条１５を構成する部分が交互に続くことになる。従って、そのようにバインダーを部分的に付与した樹脂加工糸を使用する場合には、スペースダイ糸をパイル糸に用いたパイル布帛のパイル面のように、軟質立毛Ｐ１４と硬質立毛Ｐ１５が霜降模様状や杢模様状など模様状に立毛層１２に部分的に纏まって混在することになる。立毛糸条１４の総繊度と立毛線条１５の総繊度、特に立毛線条１５の総繊度は、５０００ｄｔｅｘ以上に、更に好ましくは８０００ｄｔｅｘ以上にするとよい。 If the hard napping is too short, it is difficult to elastically buckle and deform, and if it is too long, it will be difficult to elastically buckle and deform simply by tilting. Considering this point, the length of the napped base layer 11 (thickness of the napped layer) is set to 7 to 25 mm, preferably 7 to 15 mm, and more preferably about 10 mm (8 to 12 mm). The most suitable material for the napped filament 15 is an elastic fiber yarn such as spandex. The napped filaments 15 may be monofilament yarns (tape yarns) like artificial lawn pile yarns, but a binder is applied to multifilament yarns composed of a large number of fibers such as multifilament yarns and spun yarns, It is better to use a resin-processed yarn by bonding the fibers into a single yarn having a total fineness of 500 dtex or more. This is because the properties that the fiber itself does not have can be imparted to the napped filaments 15 by the binder. For the binder, a heat-fusible fiber or a liquid resin composition is used. In order to increase the elastic recovery force against the buckling deformation of the napped filament 15, the elastic resin composition such as urethane resin, natural rubber, synthetic rubber or the like is used. Goods should be used. When a napped filament 15 is formed by applying a binder to a multifilament composed of a large number of fibers such as multifilament yarn and spun yarn, the binder may be partially applied to the multifilament. I can do it. In the resin-processed yarn to which the binder is partially applied, a portion constituting the napped yarn 14 and a portion constituting the napped filament 15 in the length direction thereof, such as a space die yarn (partially different dyeing yarn). Will continue alternately. Therefore, when using the resin-processed yarn partially provided with the binder as described above, the soft napping P14 and the hard napping P15 have a frost pattern like the pile surface of the pile fabric using the space die yarn as the pile yarn. In other words, the napped layers 12 are partially mixed together in a pattern such as a pattern or a wrinkle pattern. The total fineness of the napped yarn 14 and the total fineness of the napped filament 15, particularly the total fineness of the napped filament 15, is preferably 5000 dtex or more, and more preferably 8000 dtex or more.

立毛クッション層１３は、図１（ｂ）に図示するように、基層１１ａに立毛糸条１４と立毛線条１５の立毛（パイル）を植設したパイル地１９のパイル面に、そのパイル地の基層１１ａとは別の基層１１ｂを重ね合わせて構成することも出来る。立毛糸条１４と立毛線条１５は、図１（ａ）と（ｂ）に図示するように、それらが合撚または引き揃えられて一体になった複合立毛（Ｐ４５）を構成してもよく、又、図１（ｃ）に図示するように、それらが別々に分かれた立毛（Ｐ１４・Ｐ１５）を構成するものであってもよい。更に、立毛糸条１４と立毛線条１５が分かれて立毛を構成する場合、図１（ｄ）に図示するように、その両者の立毛の形態を変え、一方の立毛をループパイルとし、他方の立毛をカットパイルとすることも出来る。そのように立毛の形態を変える場合、図１（ｄ）に図示するように、高い座屈抗力が要求される硬質立毛（立毛線条１５）は、立毛の形状からして高い弾性回復力が期待されるループパイルとし、軟質立毛（立毛糸条１４）をカットパイルとするとよい。 As shown in FIG. 1 (b), the napped cushion layer 13 is formed on the pile surface of a pile fabric 19 in which napped yarns 14 and napped filaments 15 are planted on the base layer 11a. A base layer 11b different from the base layer 11a may be stacked. As shown in FIGS. 1 (a) and 1 (b), the napped yarn 14 and the napped filament 15 may constitute a composite napped (P45) in which they are united by twisting or aligning. In addition, as shown in FIG. 1C, they may constitute nappings (P14 and P15) that are separated separately. Further, when the napped yarn 14 and the napped filament 15 are separated to form a napped, as shown in FIG. 1 (d), the form of both napped is changed, one napped is used as a loop pile, and the other napped is formed. Napping can be used as a cut pile. When changing the form of napping in such a manner, as shown in FIG. 1 (d), hard napping (napped line 15) that requires a high buckling resistance has a high elastic recovery force due to the napped shape. The loop pile is expected, and soft napping (napped yarn 14) may be cut pile.

軟質立毛Ｐ１４と硬質立毛Ｐ１５が、２群の立毛群Ｐ１４−１・Ｐ１５−１と立毛群Ｐ１４−２・Ｐ１５−２に分かれ、それぞれステッチ方向を変えてニードル２６によって基層１１に植設されたクッション材１６では、第１群の硬質立毛Ｐ１５−１と第２群の硬質立毛Ｐ１５−２が重複する部分と重複しない部分が生じて体圧分散性が高まるが、そのためには、第１群と第２群の双方または何れか一方の群において、立毛糸条１４と立毛線条１５に、それら立毛糸条１４と立毛線条１５を引き揃えまたは合撚した複合糸条４５を加えた３種類の糸条１４・１５・４５を、例えば図８に図示するように立毛糸条１４・複合糸条４５・立毛線条１５・複合糸条４５………の順に繰り返して並べ、その配列順に従ってそれらの糸条１４・１５・４５をそれぞれ異なるニードル２６に通して基層１１に差し込み、第１群の軟質立毛Ｐ１４−１と硬質立毛Ｐ１５−１と複合立毛Ｐ４５−１と、第２群の軟質立毛Ｐ１４−２と硬質立毛Ｐ１５−２と複合立毛Ｐ４５−２が混在する立毛層１２を形成することも出来、そうすることによってクッション材１６の体圧分散性を更に高めることが出来る。 The soft napping P14 and the hard napping P15 are divided into two napping groups P14-1 and P15-1 and napping groups P14-2 and P15-2, and are respectively implanted in the base layer 11 by the needle 26 while changing the stitch direction. In the cushion material 16, a portion where the first group of hard raised hairs P15-1 and a second group of hard raised hairs P15-2 overlap and a portion that does not overlap are generated and body pressure dispersibility is increased. 3 and / or the second group, a composite yarn 45 in which the raised yarns 14 and the raised filaments 15 are aligned or twisted is added to the raised yarns 14 and the raised yarns 15 3 For example, as shown in FIG. 8, the types of yarns 14, 15, 45 are repeatedly arranged in the order of napped yarn 14, compound yarn 45, napped filament 15, compound yarn 45, and so on. According to those yarns 14,15,4 Are inserted into the base layer 11 through different needles 26, and the first group of soft napping P14-1, hard napping P15-1, composite napping P45-1, and the second group of soft napping P14-2 and hard napping P15-. 2 and composite napping P45-2 can be formed, and the body pressure dispersibility of the cushioning material 16 can be further enhanced by doing so.

そのようにタフテッド機を使用して立毛層１２を形成する場合、基層１１の一部に立毛線条１５による硬質立毛Ｐ１５を植設してから基層１１の全面に複合糸条４５による複合立毛４５を均一に植設するなど、軟質立毛Ｐ１４と硬質立毛Ｐ１５の植設密度を部分的に変え、体圧が強く作用する部分には硬質立毛Ｐ１５を緻密に植設し、体圧が然程作用しない基層１１の周囲などには軟質立毛Ｐ１５だけを植設することも出来る。軟質立毛Ｐ１４と硬質立毛Ｐ１５の植設密度を部分的に変えるためには、スペースダイ糸（部分異色染色糸）のようにバインダーを多繊糸条に部分的に付与した樹脂加工糸を立毛糸条１４と立毛線条１５の双方を兼ねて適用することも出来、その適用によって軟質立毛Ｐ１４と硬質立毛Ｐ１５を模様状に立毛層１２に混在させることが出来る。 When the raised layer 12 is formed using the tufted machine as described above, the hard raised p15 by the raised filament 15 is planted on a part of the base layer 11 and then the composite raised 45 by the composite yarn 45 is formed on the entire surface of the base layer 11. For example, the density of the soft napping P14 and the hard napping P15 is partially changed, and the hard napping P15 is densely planted in the portion where the body pressure acts strongly, so that the body pressure acts so much. Only soft napping P15 can be planted around the base layer 11 that is not. In order to partially change the planting density of the soft napping P14 and the hard napping P15, a resin-processed yarn in which a binder is partially applied to a multifilament yarn, such as a space die yarn (partial colored dyed yarn), is a napped yarn. It is also possible to apply both the strips 14 and the napped filaments 15, and the soft napping P14 and the hard nappings P15 can be mixed in the napped layer 12 in a pattern by the application.

立毛糸条１４と立毛線条１５に成る立毛層１２と、上下２つの基層１１ａ・１１ｂに成る３層積層構造の立毛クッション層１３は、図２（ａ）に図示するように１層に、又、図２（ｂ）に図示するように２層に、或いは、図２（ｃ）に図示するように３層にする等、複数層に重ねて形成することが出来る。クッション材１６には、図３（ａ）と（ｂ）に図示するように、その片面に繊維堆積不織布や発泡樹脂地等の多孔質クッション材１７を重ねて積層することが出来る。その場合、立毛層１２を基層１１に軟質立毛Ｐ１４と硬質立毛Ｐ１５を植設したパイル地１９によって構成する場合、立毛クッション層１３の上下２つの基層１１ａ・１１ｂの中の一方の基層１１を多孔質クッション材１７によって構成することも出来る。 As shown in FIG. 2 (a), the raised layer 12 consisting of the raised yarn 14 and the raised filament 15 and the raised cushion layer 13 having a three-layer structure composed of the upper and lower two base layers 11a and 11b are formed in one layer. Further, it can be formed in two or more layers such as two layers as shown in FIG. 2B or three layers as shown in FIG. As shown in FIGS. 3A and 3B, the cushion material 16 can be laminated with a porous cushion material 17 such as a fiber-deposited nonwoven fabric or a foamed resin ground on one side. In this case, when the napped layer 12 is constituted by a pile fabric 19 in which soft napped P14 and hard napped P15 are planted on the base layer 11, one of the two upper layers 11a and 11b above and below the napped cushion layer 13 is made porous. It can also be constituted by the quality cushion material 17.

複数層の立毛クッション層１３に成るクッション材１６では、図３（ｃ）に図示するように、立毛クッション層１３と立毛クッション層１３の間に多孔質クッション材１７を積層することも出来る。クッション材１６の表裏両面または片面には、図４（ａ）と（ｂ）と（ｃ）に図示するように、表面パイル１８を積層することが出来、その表面パイル１８には、図１（ｂ）と（ｃ）と（ｄ）に図示するように、立毛クッション層１３を構成するパイル地１９、即ち、硬質立毛（Ｐ１５）と軟質立毛（Ｐ１４）によってパイル面が構成されるパイル地１９を適用することも出来る。その場合、その表面パイル１８をもって立毛クッション層１３の上下２つの基層１１ａ・１１ｂの中の一方の基層１１に代えることも出来る。従って、図１（ｂ）と図１（ｃ）と図１（ｄ）と図８に図示する基層１１に硬質立毛Ｐ１５と軟質立毛Ｐ１４を植設したパイル地１９によって立毛層１２を構成し、その立毛層１２に表面パイル地１８や多孔質クッション材１７を積層する場合、図３と図４に図示する表面パイル地１８や多孔質クッション材１７と立毛層１２の間に介在する基層１１を省くことも出来る。 In the cushion material 16 formed of a plurality of napped cushion layers 13, a porous cushion material 17 can be laminated between the napped cushion layer 13 and the napped cushion layer 13, as shown in FIG. As shown in FIGS. 4 (a), (b) and (c), a surface pile 18 can be laminated on the front and back surfaces or one surface of the cushion material 16, and the surface pile 18 has a structure shown in FIG. As shown in FIGS. b), (c), and (d), the pile ground 19 constituting the raised cushion layer 13, that is, the pile ground 19 having a pile surface composed of hard raised (P 15) and soft raised (P 14). Can also be applied. In that case, the surface pile 18 can be replaced with one of the upper and lower base layers 11 a and 11 b of the napped cushion layer 13. Therefore, the raised layer 12 is constituted by the pile ground 19 in which the hard raised p15 and the soft raised p14 are implanted in the base layer 11 shown in FIGS. 1 (b), 1 (c), 1 (d) and 8. When the surface pile fabric 18 and the porous cushion material 17 are laminated on the raised layer 12, the surface pile fabric 18 and the base layer 11 interposed between the raised cushion layer 12 and the surface pile fabric 18 shown in FIGS. It can be omitted.

立毛クッション層１３を形成するためにパイル地１９に重ね合わせる基層１１には、表面パイル地１８や多孔質クッション材１７の他に、平織物や平編物、不織布その他の布帛、プラスチックフィルム、その他の可撓な生地を使用することが出来る。それらの基層１１をパイル地１９に重ね合わせて立毛クッション層１３を形成する場合、その重なり合し基層１１とパイル地１９の間は、接着せず摺動可能な状態、即ち、ただ重ね合わせただけのフリーな状態にしておいてもよい。 In addition to the surface pile fabric 18 and the porous cushion material 17, the base layer 11 to be superimposed on the pile fabric 19 to form the napped cushion layer 13 includes a plain woven fabric, a plain knitted fabric, a nonwoven fabric and other fabrics, a plastic film, and other A flexible fabric can be used. When the napped cushion layer 13 is formed by superimposing these base layers 11 on the pile base 19, the overlapping base layers 11 and the pile base 19 are slidable without being bonded, that is, only superposed. You may just leave it free.

立毛クッション層１３にパイル地１９（図１（ｂ）・（ｃ）・（ｄ）参照）を適用する場合、図５に図示するように、パイル地１９を２回以上折り返して３層以上の積層構造物とし、その中間層のパイル地をもって立毛クッション層１３とすることも出来る。そのように１枚のパイル地１９を２回以上折り返して３層以上の積層構造物にする場合には、その折り返す回数によって体重に応じた体圧分散型クッション材１６が得られ、その需要に即応することが出来る。パイル地１９を折り返す場合、そのパイル面が積層構造物の表裏に現れるようにするとよい。パイル面を表向きに折り畳んだクッション材１６では、それを表装カバー２１によって被覆すれば、その表装カバー２１の生地が基層１１となり、積層構造物の表裏のパイル層が立毛層１２を構成することになるので、立毛クッション層１３が表裏各１層づつ合計２層増えることになる。パイル地１９を折り畳んだクッション材１６では、その折り重なるパイル地１９を一括して部分的に縫合し結束するとよい。クッション材１６は、クッション体２２の中央部、即ち、身体に接する部分にだけ適用し、その周囲を縁取り材２３で囲んでクッション体２２に仕上げることも出来る（図６）。 When the pile ground 19 (see FIGS. 1B, 1C, and 1D) is applied to the napped cushion layer 13, as shown in FIG. 5, the pile ground 19 is folded twice or more to form three or more layers. It can be set as a nap cushion layer 13 by making it a laminated structure and the pile ground of the middle layer. In this way, when one pile ground 19 is folded twice or more to form a laminated structure of three or more layers, the body pressure dispersion type cushioning material 16 corresponding to the body weight is obtained by the number of times of folding, and the demand is increased. Can respond immediately. When the pile ground 19 is folded back, the pile surface may appear on the front and back of the laminated structure. In the cushion material 16 in which the pile surface is folded face up, if it is covered with the cover cover 21, the fabric of the cover cover 21 becomes the base layer 11, and the pile layers on the front and back of the laminated structure constitute the raised layer 12. Therefore, the napped cushion layer 13 is increased by two layers in total, one for each of the front and back layers. In the cushion material 16 in which the pile ground 19 is folded, the pile ground 19 to be folded may be partially sewn together and bound. The cushion material 16 can be applied only to the central portion of the cushion body 22, that is, the portion in contact with the body, and the periphery can be surrounded by a border material 23 to finish the cushion body 22 (FIG. 6).

上下２つの基層１１ａ・１１ｂと立毛層１２に成る３層積層構造の立毛クッション層１３は、その立毛層１２を間に挟む上下２つの基層１１ａ・１１ｂを、その間の立毛層１２を構成する立毛糸条１４と立毛線条１５によって連結し、その立毛層１２を構成する立毛糸条１４の立毛と立毛線条１５の立毛がそれぞれ上下２つの基層１１ａ・１１ｂに対してパイル状に起立した立体織編地２０によって構成することも出来る。そのような立体織編地２０には、前記特許文献１のクッション材のように、２枚同時に２重に織製または編成（織編）される２つの基層１１・１１の間を立毛糸条１４と立毛線条１５で連結して織編されるダブルパイル織物原反やダブルパイル編物原反を適用することが出来る（図１の分図ａ）。尚、本発明において、ダブルパイル織物原反、或いは、ダブルパイル編物原反と言う場合の用語“原反”は、図１の分図（ａ）や前記特許文献１に示される立体織編地が、本来、その上下の基層を連結している立毛糸条や立毛線条を、それら上下の基層の間でカット（センターカット）としてカットパイルとし、それら上下の基層を地組織（基布）とする２枚のパイル地を上下二重に同時に製造する中間工程成される“パイル地の原反”を意味する。 A raised cushion layer 13 having a three-layer structure composed of two upper and lower base layers 11a and 11b and a raised layer 12 is provided with two upper and lower base layers 11a and 11b sandwiching the raised layer 12 therebetween. The three-dimensional structure in which the naps of the napped yarns 14 and the naps of the napped filaments 15 constituting the napped layer 12 are connected to each other by the piles 14 and the napped filaments 15 in a pile shape with respect to the upper and lower two base layers 11a and 11b. A woven or knitted fabric 20 can also be used. In such a three-dimensional woven knitted fabric 20, like the cushion material of the above-mentioned Patent Document 1, a napped yarn is formed between two base layers 11 and 11 that are simultaneously woven or knitted (woven / knitted) in two sheets. A double pile woven fabric or a double pile knitted fabric that is woven and knitted by being connected to 14 and napped filaments 15 can be applied (part a in FIG. 1). In the present invention, the term “raw fabric” in the case of a double pile woven fabric or a double pile knitted fabric is a three-dimensional woven fabric shown in the partial diagram (a) of FIG. However, the raised yarns and raised filaments that originally connect the upper and lower base layers are cut (center cut) between the upper and lower base layers as a cut pile, and the upper and lower base layers are the base structure (base fabric). The “pile fabric” is an intermediate process in which two pile fabrics are manufactured simultaneously in a double top and bottom direction.

単糸繊度５．５ｄｔｅｘのアクリル繊維に成る総繊度６６６７ｄｔｅｘの立毛糸条１４（紡績糸）と、単糸繊度５．５ｄｔｅｘのアクリル繊維に成る総繊度６６６７ｄｔｅｘの紡績糸に熱融着性繊維を混用してアクリル繊維間を接着固定した総繊度８０００ｄｔｅｘの立毛線条１５とを引き揃え、目付２３０ｇ／ｍ² の織基布１１ａにタフテイングして成るパイル長１０ｍｍ、パイル目付１５００ｇ／ｍ² のパイル地１９を体圧分散型クッション材とし、それによって縦横各寸法４５ｃｍの次の５種類の座布団（試作品Ａ，Ｂ，Ｃ，ＤおよびＥ）を試作し、それぞれ大阪府立産業技術総合研究所技術がその支援センターに有料貸出のために備付けの接触圧力測定装置の台座に載せ、そのクッション材１６の腰に接する部分２４であって図７に符号ａとｂとｃとｄとｅとｆとｇおよびｈで示す細部に体圧測定器を設定し、その上に体重６３ｋｇのパネラーが腰を降ろして腰掛け、その各細部の体圧（単位；ヘクトパスカル）を１秒間おきに９秒間繰り返して測定し、各座布団の各細部（ａ，ｂ，ｃ，ｄ，ｅ，ｆ，ｇおよびｈ）の細部体圧平均値（Ｆ_a ，Ｆ_b ，Ｆ_c ，Ｆ_d ，Ｆ_e ，Ｆ_f ，Ｆ_g およびＦ_h ）の総合平均値μと標準偏差値σを計算し、表１に示す結果を得た。表１には、一般市販の目付け約４０００ｇ／ｍ² の綿入り座布団（市販品Ｘ）（縦横各寸法４５ｃｍ、質量約８００ｇｆ）の細部体圧測定データと総合平均値μと標準偏差値σを併記している。 Heat-bondable fibers are mixed with napped yarn 14 (spun yarn) with a total fineness of 6667 dtex made of acrylic fiber with a single yarn fineness of 5.5 dtex and spun yarn with a total fineness of 6667 dtex made with acrylic fiber with a single yarn fineness of 5.5 dtex to align pulling the napped filament 15 of the total fineness 8000dtex adhered fixed between acrylic fibers, basis weight 230 g / m ² of Omoto fabric 11a to Tafuteingu pile length 10mm comprising, pile weight per unit area 1500 g / m ² of pile 19 is a body pressure dispersion type cushioning material, and the following 5 types of cushions (prototypes A, B, C, D and E) of 45 cm in length and breadth are made respectively. A portion 24 that contacts the waist of the cushioning material 16 on the pedestal of the contact pressure measuring device provided for paying rental to the support center. A body pressure measuring device is set in the details indicated by Nos. A, b, c, d, e, f, g, and h, and a 63 kg weight panel sits down on the body, and the body pressure (unit) ; Hectopascal) is measured every second for 9 seconds, and the average body pressure average value (F _a , F _b , F) for each detail (a, b, c, d, e, f, g and h) of each cushion is measured. _Fc , _Fd , _Fe , _Ff , _Fg, and _Fh ) were calculated as the mean value μ and standard deviation value σ, and the results shown in Table 1 were obtained. Table 1 shows detailed body pressure measurement data, total average value μ, and standard deviation value σ of a commercially available seat cushion with a basis weight of about 4000 g / m ² (commercially available product X) (vertical and horizontal dimensions of 45 cm, mass of about 800 gf). It is written together.

〔試作品Ａ〕
縦横各寸法４５ｃｍの一枚のパイル地１９をパイル面（立毛層１２）を上向きにし、そのまま座布団として使用する。
〔試作品Ｂ〕
パイル地１９をパイル面（立毛層１２）を外向きにして折り畳んで二重折り畳み座布団とする。
〔試作品Ｃ〕
パイル地１９を図５に示すようにパイル面（立毛層１２）を外向きにして三重に折り畳み、目付け約１７０ｇ／ｍ² の横編メリヤス地を縦横各寸法４５ｃｍの袋状に縫製した表装カバー２１に装填して座布団とする。
〔試作品Ｄ〕
パイル地１９をパイル面（立毛層１２）を外向きにして折り畳んで二重にし、発泡倍率約３０倍の厚み約２５ｍｍのポリウレタンを挟み込み、重なり合うパイル地の周縁を縫合し、ポリウレタン装填座布団とする。
〔試作品Ｅ〕
パイル地１９をパイル面（立毛層１２）を外向きにして折り畳んで二重にし、周縁を縫合して袋状に縫製し、その袋状内部に発泡倍率約３０倍、粒径約５ｍｍのポリスチレン発泡粒体を装填し、そのポリスチレン発泡粒体による厚み約２５ｍｍのクッション層を形成した発泡粒体装填座布団とする。 [Prototype A]
One pile ground 19 having dimensions of 45 cm in length and width is used as a cushion as it is with the pile surface (napped layer 12) facing upward.
[Prototype B]
The pile ground 19 is folded with the pile surface (napped layer 12) facing outward to form a double folded cushion.
[Prototype C]
As shown in FIG. 5, the pile cover 19 is folded threefold with the pile surface (napped layer 12) facing outward, and a flat knitted fabric with a basis weight of about 170 g / m ² is sewn in a bag shape with dimensions of 45 cm in length and width. 21 is used as a cushion.
[Prototype D]
The pile 19 is folded with the pile surface (the raised layer 12) facing outward to make double, sandwiching polyurethane with a foaming ratio of about 30 times and a thickness of about 25 mm, and stitching the periphery of the overlapping pile to make a polyurethane loaded cushion .
[Prototype E]
The pile ground 19 is folded with the pile surface (raised layer 12) facing outward to make it double, and the periphery is sewn into a bag shape. The polystyrene inside the bag shape has an expansion ratio of about 30 times and a particle size of about 5 mm. A foam granule-loaded cushion is formed by loading foam granules and forming a cushion layer having a thickness of about 25 mm by the polystyrene foam granules.

上記の比較試験における総合平均値と標準偏差値が示す通り、本発明によると市販の座布団（市販品Ｘ）に比して細部の受ける総合平均値μと標準偏差値σが低く体圧分散性の高い体圧分散型クッション材が得られ、特に、内部に可撓性基材に成る上下２つの基層１１ａ・１１ｂと、それらの基層１１ａ・１１ｂの間に挟まれる立毛層（パイル）１２による３層積層構造の立毛クッション層１３を形成したもの（試作品Ｃ）では細部の受ける総合平均値μと標準偏差値σが特に低く、体圧分散性の優れたものとなる。 According to the present invention, the overall average value μ and the standard deviation value σ received by the details are lower than those of the commercially available cushions (commercial product X) as shown by the overall average value and the standard deviation value in the above comparative test. High body pressure dispersion type cushioning material is obtained, and in particular, the upper and lower base layers 11a and 11b, which are flexible base materials, and the raised layer (pile) 12 sandwiched between the base layers 11a and 11b. In the case where the napped cushion layer 13 having a three-layer structure is formed (prototype C), the total average value μ and the standard deviation value σ received by the details are particularly low, and the body pressure dispersibility is excellent.

本発明に係る体圧分散型クッション材の断面図である。It is sectional drawing of the body pressure dispersion type | mold cushioning material which concerns on this invention. 本発明に係る体圧分散型クッション材の断面図である。It is sectional drawing of the body pressure dispersion type | mold cushioning material which concerns on this invention. 本発明に係る体圧分散型クッション材の断面図である。It is sectional drawing of the body pressure dispersion type | mold cushioning material which concerns on this invention. 本発明に係る体圧分散型クッション材の断面図である。It is sectional drawing of the body pressure dispersion type | mold cushioning material which concerns on this invention. 本発明に係る体圧分散型クッション材の断面図である。It is sectional drawing of the body pressure dispersion type | mold cushioning material which concerns on this invention. 本発明に係る体圧分散型クッション材の斜視図である。It is a perspective view of the body pressure dispersion type cushion material concerning the present invention. 本発明に係る体圧分散型クッション材の平面図である。It is a top view of a body pressure dispersion type cushion material concerning the present invention. 本発明に係る製造過程におけるパイル地の一部切截裏面斜視図である。It is a partially cut rear surface perspective view of the pile ground in the manufacturing process which concerns on this invention.

Explanation of symbols

１１：基層
１２：立毛層
１３：立毛クッション層
１４：立毛糸条
１５：立毛線条
１６：体圧分散型クッション材
１７：多孔質クッション材
１８：表面パイル（パイル地）
１９：パイル地
２０：立体織編地
２１：表装カバー
２２：クッション体
２３：縁取り材
２４：腰に接する部分
２５：バックステッチ
２６：ニードル
４５：複合糸条
Ｐ１４：軟質立毛
Ｐ１５：硬質立毛
Ｐ４５：複合立毛 11: Base layer 12: Napped layer 13: Napped cushion layer 14: Napped yarn 15: Napped filament 16: Body pressure dispersion cushion material 17: Porous cushion material 18: Surface pile (pile)
19: Pile fabric 20: Three-dimensional knitted fabric 21: Cover cover 22: Cushion body 23: Border material 24: Part in contact with waist 25: Back stitch 26: Needle 45: Composite yarn P14: Soft raised P15: Hard raised P45: Compound napping

Claims

A raised base consisting of raised fibers (14) having a total fineness of 500 dtex or more and a raised fiber consisting of many fibers having a single yarn fineness of less than 50 dtex, and a raised fiber consisting of raised filaments (15) having a single yarn fineness of 500 dtex or more, A body pressure dispersion type cushioning material characterized by being implanted in a base layer (11a) as a material and having the same length from the napped base layer (11a) of 7 to 25 mm.

A napped cushion layer (13) having a three-layer structure is formed by two upper and lower base layers (11a and 11b) serving as a flexible substrate and a napped layer (12) sandwiched between the base layers (11a and 11b). The napped layer (12) is formed by a napped yarn (14) having a total fineness of 500 dtex or more and a napped filament (15) having a single yarn fineness of 500 dtex or more, which is composed of a large number of fibers having a single yarn fineness of less than 50 dtex. The raised yarns (14) and the raised filaments (15) are locked to at least one of the upper and lower base layers (11a, 11b), and from the one base layer (11a) The napped yarns (14) and the napped filaments (15) are formed and mixed in the napped layers (12), and the napped strands (14) are raised toward the other base layer (11b). (15) napping and standing Between the napped yarns (14) and the napped yarns of the napped filaments (15) and the napped yarns of the napped yarns (14) are in contact with each other at the napped layer (12). (11) A body pressure dispersion type cushioning material having the same length from 7 to 25 mm.

A porous cushion material (17) made of any one of a pile fabric, a fiber-laid non-woven fabric, and a foamed resin fabric is composed of a napped layer (12) composed of napped yarns (14) and napped filaments (15), and two upper and lower base layers. The body pressure dispersion type cushion material according to claim 2, wherein the body pressure dispersion type cushion material is laminated on the napped cushion layer (13) having a three-layer laminated structure of (11a and 11b).

The raised yarn (14) and the raised filament (15) constituting the raised layer (12) are formed on one of the two base layers (11a and 11b) sandwiching the raised layer (12). The pile according to claim 2 and claim 3 which forms the pile (napping) which stopped, and the base layer (11a) and napping layer (12) to which it forms form the pile ground (19) Body pressure dispersion type cushioning material.

The pile ground (19) formed by planting the pile (napped) which becomes the napped yarn (14) and the pile (napped) which becomes the napped filament (15) in the base layer (11a) is folded twice or more to form three layers. 5. The body pressure dispersion type cushion material according to claim 2, 3 and 4, wherein the laminated structure is configured, and a pile of an intermediate layer of the laminated layer forms a raised layer (12).

The above-mentioned claim, wherein the outer surface is covered with a cover cover (21) tailored into a bag shape, and the fabric of the cover cover (21) constitutes the base layer (11) of the outer raised cushion layer (13). The body pressure dispersion type cushion material according to claim 3, claim 4, and claim 5.

Napped yarns (P14) consisting of napped yarns (14) having a total fineness of 500 dtex or more constituted by a large number of fibers having a single yarn fineness of less than 50 dtex, and napped fibers (P15) consisting of napped filaments (15) having a single yarn fineness of 500 dtex or more. Are divided into two napped groups (P14-1 and P15-1) and napped groups (P14-2 and P15-2), respectively, and napped fibers that form the first group of napped yarns (14-1). (P14-1) and napped filaments (P15-1) consisting of napped filaments (15-1) and napped filaments (P14-2) and napped filaments (15-) The nappings (P15-2) of 2) are implanted in the base layer (11) which is a flexible base material by changing the stitch direction for each group by the needle (26) of the tufted machine, Those nappings (P14-1, P15-1, P14- -Back stitch (25-1) of the first group of napped yarns (14-1) and napped filaments (15-1) formed on the back surface of the base layer (11) on the opposite side to P15-2) ) And the second group of napped yarns (14-2) and the back stitches (25-2) of the napped filaments (15-2) intersect, and these napped (P14-1, P15-1, P14) -2, P15-2) from the base layer (11) are the same and have a length of 7 to 25 mm. Claims 1, 2, 3, 4, 5 and 6 The body pressure dispersion type cushion material according to 1.