JP2023087727A

JP2023087727A - Ceiling skin material

Info

Publication number: JP2023087727A
Application number: JP2021202168A
Authority: JP
Inventors: 和之東條; Kazuyuki Tojo
Original assignee: Suminoe Teijin Techno Co Ltd
Current assignee: Suminoe Teijin Techno Co Ltd
Priority date: 2021-12-14
Filing date: 2021-12-14
Publication date: 2023-06-26

Abstract

To provide a ceiling skin material, which does not require laminating polyurethane foam as the ceiling skin material is excellent in flexibility due to a thickness thereof obtained by knitted texture and handling of a yarn instead of a thickness applied by hair raising and excellent in workability in post-processing.SOLUTION: A ceiling skin material 1 according to the present invention is a skin material laminated on a ceiling base material 4 of an automobile. The skin material is a tricot knitted fabric formed by L1 (rear reed), L2 (middle reed), and L3 (front reed) of a tricot knitting machine. A face of a needle loop 2 formed by the L1 (rear reed) and the L2 (middle reed) is a front face of the skin material. A face of a sinker loop 3 having a knitted texture formed by passing a false twist yarn through the L3 (front reed) and swinging two to twelve needles so that the false twist yarn is raised in a thickness direction of the skin material is a rear face of the skin material. A thickness of the skin material is 0.9 mm or more.SELECTED DRAWING: Figure 1

Description

本発明は、自動車の天井用表皮材に関する。 TECHNICAL FIELD The present invention relates to a covering material for automobile ceilings.

従来、自動車の天井材において、表面側に風合いや意匠性のある表皮材を用い、裏面側には軟質ポリウレタンフォーム等のクッション材が積層された積層材が、自動車の天井基材に接着されている。例えば、編地、不織布、スエード調合成皮革等を表皮材とし、裏面にポリウレタンフォームを積層して車両用シート内装材が接着剤層を介して積層され、成型された車両用シート内装材が開示されている（特許文献１）。 Conventionally, in automobile ceiling materials, a laminated material in which a surface material with texture and design is used on the front side and a cushioning material such as soft polyurethane foam is laminated on the back side is adhered to the ceiling base material of the automobile. there is For example, a vehicle seat interior material is disclosed in which a knitted fabric, a nonwoven fabric, a suede-like synthetic leather, etc. is used as a skin material, and a polyurethane foam is laminated on the back surface, and a vehicle seat interior material is laminated via an adhesive layer to form a molded vehicle seat interior material. (Patent Document 1).

しかしながら、表皮材とポリウレタンフォームが積層された車両用シート内装材は、異素材の複合材であるため材料のリサイクルが困難であるとういう問題があった。また、自動車に用いる内装材の難燃基準を満たすために、難燃剤が配合されたポリウレタンフォームを用いるため材料コストが高く、しかも表皮材の裏面に積層するのに手間と時間を要し、製造コストが高くなるという問題があった。 However, the vehicle seat interior material in which the skin material and the polyurethane foam are laminated has a problem that it is difficult to recycle the material because it is a composite material of different materials. In addition, in order to meet the flame retardancy standards for interior materials used in automobiles, polyurethane foam containing flame retardants is used, so the material cost is high. There was a problem of high cost.

そこで、出願人は、表皮材としてトリコット編地の裏面を起毛し、特定の厚さにすることによりクッション性が付与され、軟質ポリウレタンフォームを省くことが可能であることを見出し、自動車等の車両内装材としての表皮材の裏側に起毛を施し、ウレタン層を介さずに直接基材層と接着させ、軟質ウレタンフォームの接着工程を省き、リサイクル性を向上し、軽量化を実現する意匠性のある車両内装用表皮材の発明を出願した（特許文献２）。 Therefore, the applicant found that by raising the back surface of the tricot knitted fabric as a skin material and making it a specific thickness, it is possible to impart cushioning properties and omit the flexible polyurethane foam. The back side of the surface material used as the interior material is brushed and bonded directly to the base layer without the urethane layer, eliminating the bonding process of soft urethane foam, improving recyclability, and realizing weight reduction. An application was filed for an invention of a vehicle interior covering material (Patent Document 2).

しかしながら、軽量で、良好な意匠性とクッション性を備え、リサイクル性を高めることができる優れた車両内装用表皮材であったものの、起毛により付与された厚みは使用時の負荷による復元性の点で改善の余地があった。 However, although it was an excellent vehicle interior skin material that was lightweight, had good design and cushioning properties, and could improve recyclability, the thickness imparted by raising was poor in terms of resilience due to load during use. There was room for improvement.

特開２００３－２４５９６９号公報JP-A-2003-245969 特開２００９－２１４５８９号公報JP 2009-214589 A

本発明は、かかる技術的背景に鑑みてなされたものであり、その目的は起毛により付与された厚みではなく、編組織及び糸使いにより厚みを得ることで柔軟性に優れ、後加工での作業性に優れるためポリウレタンフォームを積層する必要のない天井用表皮材を提供することにある。 The present invention has been made in view of this technical background, and its purpose is not to obtain the thickness given by raising, but to obtain thickness by knitting structure and yarn usage, so that it has excellent flexibility and can be used in post-processing. To provide a covering material for a ceiling that does not need to be laminated with polyurethane foam because of its excellent properties.

前記目的を達成するために、本発明は以下の手段を提供する。 In order to achieve the above object, the present invention provides the following means.

［１］自動車の天井基材に積層される表皮材であって、
前記表皮材がトリコット編機のL１（後筬）、L２（中筬）とL３（前筬）によって編成されるトリコット編地で、
前記L１（後筬）と前記L２（中筬）によるニードルループの面が前記表皮材の表面であり、
前記L３（前筬）に仮撚加工糸を通し２針～１２針振りの編組織を有し、
前記表皮材の厚み方向に前記仮撚加工糸が立ったシンカーループの面が前記表皮材の裏面であり、
前記表皮材の厚みが０．９ｍｍ以上であることを特徴とする天井用表皮材。 [1] A skin material laminated on a ceiling base material of an automobile,
A tricot knitted fabric in which the skin material is knitted by L1 (rear reed), L2 (middle reed) and L3 (front reed) of a tricot knitting machine,
The surface of the needle loop formed by the L1 (rear reed) and the L2 (middle reed) is the surface of the skin material,
A false twisted yarn is passed through the L3 (front reed) and has a knitting structure of 2 to 12 stitches,
The surface of the sinker loop on which the false twisted yarn stands in the thickness direction of the skin material is the back surface of the skin material,
A covering material for a ceiling, characterized in that the covering material has a thickness of 0.9 mm or more.

［２］前記仮撚加工糸の総繊度が２０ｄｔｅｘ～３３０ｄｔｅｘで、単糸繊度が０．１ｄｔｅｘ～２２ｄｔｅｘである前項１に記載の天井用表皮材。 [2] The ceiling covering material according to the preceding item 1, wherein the false twisted yarn has a total fineness of 20 dtex to 330 dtex and a single yarn fineness of 0.1 dtex to 22 dtex.

［３］前記表皮材のヨコの剛軟度（曲げ長さ）が３５ｍｍ～１１０ｍｍである前項１又は２に記載の天井用表皮材。 [3] The ceiling covering material according to the above item 1 or 2, wherein the bending resistance (bending length) of the covering material is 35 mm to 110 mm.

［４］前記シンカ―ループの厚みが０．４ｍｍ～２．０ｍｍであり、前記表皮材の厚み（ｍｍ）に占める百分率が４０％～８０％である前項１～３のいずれか１項に記載の天井用表皮材。 [4] Any one of the preceding items 1 to 3, wherein the sinker loop has a thickness of 0.4 mm to 2.0 mm and accounts for 40% to 80% of the thickness (mm) of the skin material. ceiling covering material.

［５］前記トリコット編地にポリウレタン系樹脂、アクリル系樹脂、ポリエステル系樹脂からなる群より選ばれる１種が付着である前項１～４のいずれか１項に記載の天井用表皮材。 [5] The ceiling covering material according to any one of the preceding items 1 to 4, wherein one selected from the group consisting of polyurethane-based resin, acrylic-based resin, and polyester-based resin is attached to the tricot knitted fabric.

［１］の発明では、起毛により付与された厚みではなく、編組織及び糸使いにより厚みを得ることでき、しかも表皮材の厚みが０．９ｍｍ以上であることから、柔軟性に優れ、後加工での作業性に優れるためポリウレタンフォームを積層する必要のない天井用表皮材を提供することができる。また、ポリウレタンフォームを積層するといった複合材ではないので高いリサイクル性を発揮するとともに、製造コストの低減も実現した天井用表皮材を提供することができる。 In the invention [1], the thickness can be obtained not by the thickness imparted by raising, but by the knitting structure and the use of yarn, and the thickness of the skin material is 0.9 mm or more. It is possible to provide a ceiling covering material that does not need to be laminated with a polyurethane foam because of its excellent workability in the air. Moreover, since it is not a composite material such as lamination of polyurethane foam, it is possible to provide a ceiling covering material that exhibits high recyclability and realizes a reduction in manufacturing cost.

［２］の発明では、前記仮撚加工糸の総繊度が２０ｄｔｅｘ～３３０ｄｔｅｘで、単糸繊度が０．１ｄｔｅｘ～２２ｄｔｅｘであることから、仮撚加工糸の捲縮と染色時の糸の収縮によりシンカーループ密度を増加させることで天井用表皮材の厚みを確保することができる。 In the invention [2], the total fineness of the false twisted yarn is 20dtex to 330dtex and the single yarn fineness is 0.1dtex to 22dtex. By increasing the sinker loop density, the thickness of the ceiling covering material can be ensured.

［３］の発明では、前記表皮材のヨコの剛軟度（曲げ長さ）が３５ｍｍ～１１０ｍｍであることから、天井用表皮材の裁断工程、成型工程等における取扱い等の作業性を向上することができる。 In the invention of [3], since the lateral bending resistance (bending length) of the skin material is 35 mm to 110 mm, workability such as handling in the cutting process, molding process, etc. of the ceiling skin material is improved. be able to.

［４］の発明では、前記シンカ―ループの厚みが０．４ｍｍ～２．０ｍｍであり、前記表皮材の厚み（ｍｍ）に占める百分率が４０％～８０％であることから、シンカーループに使用している仮撚加工糸の捲縮と糸の収縮による厚みを確保し、柔軟性のある天井用表皮材とすることができる。Ｌ３（前筬）で編成されたアンダーラップによる糸の飛びが染色工程において編地の収縮によってループを形成し、このループが天井基材の凹凸を吸収し表皮材表面がフラットな仕上がりが得られるような柔軟性を発揮することができる。 In the invention [4], the thickness of the sinker loop is 0.4 mm to 2.0 mm, and the percentage of the thickness (mm) of the skin material is 40% to 80%. It is possible to secure the thickness by crimping the false twisted textured yarn and shrinking the yarn, and to provide a flexible ceiling covering material. Thread skipping due to the underwrap knitted with L3 (front reed) forms a loop due to shrinkage of the knitted fabric in the dyeing process, and this loop absorbs the unevenness of the ceiling base material, resulting in a flat finish on the surface of the skin material. flexibility can be demonstrated.

［５］の発明では、前記トリコット編地にポリウレタン系樹脂、アクリル系樹脂、ポリエステル系樹脂からなる群より選ばれる１種が付着していることから、天井用表皮材に適度なコシを付与することができる。 In the invention [5], since one selected from the group consisting of polyurethane-based resin, acrylic-based resin, and polyester-based resin is attached to the tricot knitted fabric, it imparts appropriate stiffness to the ceiling covering material. be able to.

本発明に係る天井用表皮材の一実施形態を示す模式的断面図である。BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a schematic cross-sectional view showing an embodiment of a ceiling skin material according to the present invention; 図１に示す天井用表皮材の天井基材との接合を示す説明図である。1. It is explanatory drawing which shows joining with a ceiling base material of the skin material for ceilings shown in FIG. 従来技術の表皮層の一例を示す説明図である。It is explanatory drawing which shows an example of the skin layer of a prior art. 実施例１のトリコット編地の編組織である。1 is a knitting structure of the tricot knitted fabric of Example 1. FIG.

次に、本発明に係る車両用内装材の一実施形態について図を参照しつつ説明する。 Next, an embodiment of a vehicle interior material according to the present invention will be described with reference to the drawings.

本発明に係る天井用表皮材１は、自動車の天井基材４に積層される表皮材であって、前記表皮材がトリコット編機のL１（後筬）、L２（中筬）とL３（前筬）によって編成されるトリコット編地で、前記L１（後筬）と前記L２（中筬）によるニードルループ２の面が前記表皮材の表面であり、前記L３（前筬）に仮撚加工糸を通し２針～１２針振りの編組織を有し、前記表皮材の厚み方向に前記仮撚加工糸が立ったシンカーループ３の面が前記表皮材の裏面であり、前記表皮材の厚みが０．９ｍｍ以上であることを特徴とする。 The ceiling covering material 1 according to the present invention is a covering material laminated on a ceiling base material 4 of an automobile, and the covering material is L1 (rear reed), L2 (middle reed) and L3 (front reed) of a tricot knitting machine. The surface of the needle loop 2 formed by the L1 (rear reed) and the L2 (middle reed) is the surface of the skin material, and the L3 (front reed) is a false twisted yarn. The surface of the sinker loop 3, which has a knitting structure of 2 to 12 needles through and the false twisted yarn stands in the thickness direction of the skin material, is the back surface of the skin material, and the thickness of the skin material is It is characterized by being 0.9 mm or more.

このような構成を採用することによって、起毛により付与された厚みではなく、編組織及び糸使いにより厚みを得ることでき、ポリウレタンフォーム５－２を積層する必要のない天井用表皮材１を提供することができる。 By adopting such a configuration, the ceiling covering material 1 can be provided with a thickness not by raising the thickness but by the knitting structure and the use of threads, and does not require lamination of the polyurethane foam 5-2. be able to.

本発明の表皮材を構成する繊維としては、ポリエステル繊維、ポリウレタン繊維、ポリプロピレン繊維等の合成繊維を挙げることができる。これらを適宜組み合せてもよい。なかでも、ポリエステル繊維を含んでなるのが自動車用として優れた耐候性能を保つことができるという観点から好ましい。 Synthetic fibers such as polyester fibers, polyurethane fibers, polypropylene fibers, etc. can be cited as the fibers constituting the skin material of the present invention. You may combine these suitably. Among them, those containing polyester fibers are preferable from the viewpoint of maintaining excellent weather resistance performance for automobiles.

本発明のトリコット編地は、３枚以上の筬を有するトリコット編機のL１（後筬）、L２（中筬）とL３（前筬）によって編成されるトリコット編地で、L２（中筬）の糸はL３（前筬）の糸とL１（後筬）の糸を繋ぎニードルループ２を形成し、L３（前筬）の仮撚加工糸は、２針～１２針振りの編組織によってシンカーループ３を形成する。こうして編成されたトリコット編地は、ニードルループ２の面が表面で、方向性のない小柄で、無地調の外観となる。一方のシンカーループ３は前記表皮材の厚み方向に前記仮撚加工糸が立ったループの面が天井用表皮材１の裏面で、前記表皮材の厚みは０．９ｍｍ以上である。なお、本発明ではトリコット編機のL１（後筬）、L２（中筬）とL３（前筬）によって編成されるトリコット編地で、前記L１（後筬）と前記L２（中筬）によるニードルループの面が前記表皮材の表面である３枚筬を使用した編地であるが、ニーズに応じてL３（中前筬）とＬ４（前筬）で編柄を編成し、L２（中筬）が地組織となり、L１（後筬）をコード編組織とし、シンカーループの面を表皮材の表面とする４枚筬を使用した編地を天井用表皮材として用いてもよい。 The tricot knitted fabric of the present invention is a tricot knitted fabric knitted by L1 (rear reed), L2 (middle reed) and L3 (front reed) of a tricot knitting machine having three or more reeds, and L2 (middle reed) The thread of L3 (front reed) connects the thread of L1 (rear reed) to form needle loop 2, and the false twisted thread of L3 (front reed) is a sinker with a knitting structure of 2 to 12 stitches. Form loop 3. The tricot knitted fabric thus knitted has the surface of the needle loops 2 on the front side, and has a small, non-directional, plain appearance. One of the sinker loops 3 is the back surface of the ceiling covering material 1, and the thickness of the covering material is 0.9 mm or more. In the present invention, a tricot knitted fabric knitted by L1 (rear reed), L2 (middle reed) and L3 (front reed) of a tricot knitting machine, needles by said L1 (rear reed) and said L2 (middle reed) It is a knitted fabric using three reeds whose loop surface is the surface of the skin material, but according to needs, a knitted pattern is knitted with L3 (middle reed) and L4 (front reed), L2 (middle reed) ) is the base structure, L1 (rear reed) is the cord knitting structure, and a knitted fabric using four reeds with the surface of the sinker loop as the surface of the skin material may be used as the ceiling skin material.

天井用表皮材１の裏面を天井基材４に向けて積層して適宜天井の形状に応じて接着成型される。接着成型の際にニードルループ２の面を表面、シンカーループ３の面を裏面にすることで、天井基材４の凹凸を吸収し天井表面の品位を保ったなめらかな仕上がりが得られる。 The back surface of the ceiling covering material 1 is laminated facing the ceiling base material 4, and adhesive molding is appropriately performed according to the shape of the ceiling. By making the surface of the needle loop 2 the front side and the surface of the sinker loop 3 the back side in adhesive molding, the unevenness of the ceiling base material 4 is absorbed and the quality of the ceiling surface is maintained to obtain a smooth finish.

前記L３（前筬）の仮撚加工糸は、２針～１２針振りの編組織によってシンカーループ３を形成するが、２針振り未満のデンビ編組織では、シンカーループ３の糸長が短くなるので、ポリウレタンフォームを必要としない天井用として必要な厚みを得ることが困難となる。逆に１２針振りを超えた編組織では、編地のヨコ伸びが低下し、天井用表皮材１の成形時にシワが発生し易くなる。 The false-twisted textured yarn of L3 (front reed) forms the sinker loop 3 with a knitting structure of 2 to 12 stitches, but the yarn length of the sinker loop 3 is shortened in the Denbi knitting structure of less than 2 needles. Therefore, it is difficult to obtain the necessary thickness for ceilings that do not require polyurethane foam. Conversely, in a knitted structure exceeding 12 needle swings, the horizontal elongation of the knitted fabric is reduced, and wrinkles are likely to occur when the ceiling covering material 1 is formed.

前記トリコット編機のゲージは、特に制限はないが２２～３６ゲージ／インチの編機を使用するのが好ましい。２２ゲージ／インチ未満では編地密度が粗く、天井基材４と表皮材との接着に使用する接着剤が浸みだし易くなる恐れがあるので好ましくない。逆に３６ゲージ／インチを越えると繊度の太い糸での編立が難しくなるため厚みを維持できなくなる恐れがあるので好ましくない。 Although the gauge of the tricot knitting machine is not particularly limited, it is preferable to use a knitting machine of 22 to 36 gauge/inch. If the density is less than 22 gauge/inch, the density of the knitted fabric becomes coarse, and the adhesive used for bonding the ceiling base material 4 and the upholstery material may easily seep out, which is not preferable. On the other hand, if it exceeds 36 gauge/inch, it becomes difficult to knit with a thick yarn, and there is a possibility that the thickness cannot be maintained, which is not preferable.

また、トリコット編成時の編機上でのコースは、３５～６５コース／インチが好ましい。３５コース／インチ未満では、編地密度が粗く、天井基材４と表皮材との接着に使用する樹脂が浸みだし易くなる恐れがあるので好ましくない。逆に６５コース／インチを超えると、編地の伸びが低下し、天井用表皮材の成型時にシワが発生し易くなる恐れがあるので好ましくない。 Further, the course on the knitting machine during tricot knitting is preferably 35 to 65 courses/inch. If the density is less than 35 courses/inch, the density of the knitted fabric is so low that the resin used for adhesion between the ceiling base material 4 and the upholstery material tends to seep out, which is not preferable. Conversely, if it exceeds 65 courses/inch, the elongation of the knitted fabric is reduced, and wrinkles may easily occur during molding of the ceiling covering material, which is not preferable.

本発明では、表皮材の厚みは編組織及び糸使いにより得られ、厚みは０．９ｍｍ以上である。より具体的にはL３（前筬）の前記仮撚加工糸はランナー長を長くすることで、前記表皮材の厚み方向に前記仮撚加工糸が立ったループを形成し、厚みを付与することができる。 In the present invention, the thickness of the skin material is obtained by the knitting structure and yarn usage, and the thickness is 0.9 mm or more. More specifically, by lengthening the runner length of the false twisted yarn of L3 (front reed), the false twisted yarn forms a standing loop in the thickness direction of the skin material, thereby imparting thickness. can be done.

前記ランナー長は２２０ｃｍ以上が好ましい。さらに好ましくは、２８０ｃｍ～６００ｃｍの範囲である。ランナー長が２２０ｃｍ未満では編地が薄くなるため、天井基材４と表皮材との接着に使用する樹脂が浸みだす恐れがあることや、天井基材４の凹凸を吸収しきれない恐れがあるため好ましくない。逆に６００ｃｍを超えると編地が厚くなってくるため、染色加工時に編地に詰め込みシワが発生し易くなる恐れがあるので好ましくない。 The runner length is preferably 220 cm or more. More preferably, it is in the range of 280 cm to 600 cm. If the runner length is less than 220 cm, the knitted fabric becomes thin, so there is a risk that the resin used to bond the ceiling base material 4 and the skin material may seep out, or that unevenness of the ceiling base material 4 may not be absorbed. I don't like it because On the other hand, if the length exceeds 600 cm, the knitted fabric becomes thick, and wrinkles may easily occur when the knitted fabric is dyed, which is not preferable.

また、シンカ―ループ３の厚みが０．４ｍｍ～２．０ｍｍの範囲であり、前記表皮材の厚み（ｍｍ）に占める百分率が４０％～８０％の範囲が好ましい。シンカ―ループ３の厚みが０．４ｍｍ未満では編地が薄くなるため、天井基材４と表皮材との接着に使用する樹脂が浸みだす恐れがあることや、天井基材４の凹凸を吸収しきれない恐れがあるため好ましくない。逆に２．０ｍｍを超えると編地が厚くなってくるため、染色加工時に編地に詰め込みシワが発生し易くなる恐れがあるので好ましくない。 Further, it is preferable that the thickness of the sinker loop 3 is in the range of 0.4 mm to 2.0 mm, and the percentage of the thickness (mm) of the skin material is in the range of 40% to 80%. If the thickness of the sinker loop 3 is less than 0.4 mm, the knitted fabric will be thin, so the resin used for bonding the ceiling base material 4 and the skin material may seep out, and the unevenness of the ceiling base material 4 may be absorbed. It is not preferable because there is a fear that it will not be possible to finish it. On the other hand, if it exceeds 2.0 mm, the knitted fabric becomes thick, and there is a possibility that the knitted fabric is likely to be stuffed and wrinkled during the dyeing process, which is not preferable.

また、シンカ―ループ３の前記表皮材の厚み（ｍｍ）に占める百分率が４０％未満では編地が薄くなるため、天井基材４と表皮材との接着に使用する樹脂が浸みだす恐れがあることや、天井基材４の凹凸を吸収しきれない恐れがあるため好ましくない。逆に８０％を超えると編地が厚くなってくるため、染色加工時に編地に詰め込みシワが発生し易くなる恐れがあるので好ましくない。 In addition, if the percentage of the sinker loop 3 in the thickness (mm) of the skin material is less than 40%, the knitted fabric becomes thin, and the resin used for bonding the ceiling base material 4 and the skin material may seep out. In addition, it is not preferable because there is a possibility that the unevenness of the ceiling base material 4 cannot be absorbed. On the other hand, if it exceeds 80%, the knitted fabric becomes thick, and there is a possibility that the knitted fabric is likely to be stuffed and wrinkled during the dyeing process, which is not preferable.

前記仮撚加工糸は、公知の方法により仮に撚りを掛けた糸に熱を加え、また撚りを戻す加工が施された糸で、ふんわりと柔らかい風合いで嵩高性のある糸である。 The false-twisted yarn is a yarn obtained by applying heat to a yarn that has been temporarily twisted by a known method and then untwisting it.

前記仮撚加工糸の総繊度が２０ｄｔｅｘ～３３０ｄｔｅｘの範囲で、かつ単糸繊度が０．１ｄｔｅｘ～２２ｄｔｅｘの範囲が好ましい。より好ましくは単糸繊度が１ｄｔｅｘ～５ｄｔｅｘの範囲である。総繊度が２０ｄｔｅｘ未満では編地が薄くなるため、天井基材４と表皮材との接着に使用する樹脂が浸みだす恐れがあることや、天井基材４の凹凸を吸収しきれない恐れがあるため好ましくない。逆に総繊度が３３０ｄｔｅｘを超えると編地が厚くなってくるため、染色加工時に編地に詰め込みシワが発生し易くなる恐れがあるので好ましくない。同時に、単糸繊度が０．１ｄｔｅｘ未満では表皮材の面に負荷がかかった際に編地が変形してしましい編地の厚みを維持することが難しくなる恐れがあり、逆に単糸繊度が２２ｄｔｅｘを超えると糸が硬くなってくるので編成時にニードルループ２の面に糸が飛び出してしまい触感が低下する恐れがあるので好ましくない。 It is preferable that the total fineness of the false twisted yarn is in the range of 20 dtex to 330 dtex and the single yarn fineness is in the range of 0.1 dtex to 22 dtex. More preferably, the single yarn fineness is in the range of 1 dtex to 5 dtex. If the total fineness is less than 20 dtex, the knitted fabric becomes thin, so there is a risk that the resin used for bonding the ceiling base material 4 and the skin material may seep out, or that the unevenness of the ceiling base material 4 may not be absorbed. I don't like it because Conversely, if the total fineness exceeds 330 dtex, the knitted fabric becomes thicker, and wrinkles may easily occur when the knitted fabric is dyed, which is not preferable. At the same time, if the single yarn fineness is less than 0.1 dtex, the knitted fabric may be deformed when a load is applied to the surface of the skin material, making it difficult to maintain the desired thickness of the knitted fabric. If it exceeds 22 dtex, the yarn becomes hard and may protrude from the surface of the needle loop 2 during knitting, resulting in a decrease in tactile sensation.

本発明の表皮材のヨコの剛軟度（曲げ長さ）が３５ｍｍ～１１０ｍｍの範囲が好ましい。ヨコの剛軟度（曲げ長さ）が３５ｍｍ未満では柔らか過ぎるため天井用表皮材の成型時の作業において天井用表皮材の取り扱いが難しく（＝作業性が悪い）なる恐れがあり好ましくない。逆に１１０ｍｍを超えると天井用表皮材に折れやシワが発生し易くなる恐れがあるので好ましくない。 The lateral bending resistance (bending length) of the skin material of the present invention is preferably in the range of 35 mm to 110 mm. If the transverse bending resistance (bending length) is less than 35 mm, it is too soft, and the ceiling covering material may be difficult to handle (=poor workability) during molding of the ceiling covering material, which is not preferable. Conversely, if the thickness exceeds 110 mm, the ceiling covering material may be likely to be folded or wrinkled, which is not preferable.

また、前記トリコット編地にポリウレタン系樹脂、アクリル系樹脂、ポリエステル系樹脂からなる群より選ばれる１種が付着しているのが好ましく、上述の接着の際に用いられる樹脂との親和性が良好な樹脂であることから好ましい。 In addition, it is preferable that one kind selected from the group consisting of polyurethane-based resin, acrylic-based resin, and polyester-based resin is attached to the tricot knitted fabric, and has good affinity with the resin used for the above-mentioned adhesion. It is preferable because it is a flexible resin.

なお、本発明の天井用表皮材１を自動車の天井基材４に積層するには、天井の形状に合わせて、成型と同時または成型後に樹脂を用いてプレスして積層を行なう方法を用いることができる。 In order to laminate the ceiling covering material 1 of the present invention on the ceiling base material 4 of an automobile, a method of pressing with a resin at the same time as molding or after molding in accordance with the shape of the ceiling is used for lamination. can be done.

なお、接着の際のアンカー効果が期待できることからシンカーループ３の面を起毛してもよい。この場合の起毛は厚さを増すというよりはアンカー効果のためのものなのでループもしくはセミカット起毛が好ましく、起毛する方法は特に限定されないが、針布起毛、サンドペーパー等を挙げることができる。起毛を施す際には、あらかじめ起毛油剤を塗布しておくのがよい。 In addition, the surface of the sinker loop 3 may be raised because an anchoring effect can be expected during adhesion. In this case, the raising is for an anchoring effect rather than for increasing the thickness, so loop or semi-cut raising is preferable, and the raising method is not particularly limited, but carding, sandpaper, and the like can be mentioned. When raising the hair, it is better to apply a raising oil in advance.

次に、本発明の具体的な実施例について説明するが、本発明はこれらの実施例のものに特に限定されるものではない。なお、実施例、比較例では編糸はポリエステル繊維を使用し、表１に使用した編糸の番手等、編組織、ランナー長を示した。編糸欄に記載のＴはｄｔｅｘを、ＳＤはセミダルをそれぞれ意味する。また、表２に評価結果を示した。 Next, specific examples of the present invention will be described, but the present invention is not particularly limited to these examples. In the Examples and Comparative Examples, polyester fiber was used as the knitting yarn, and Table 1 shows the yarn count, knitting structure, and runner length of the knitting yarn used. T described in the knitting yarn column means dtex, and SD means semidull. In addition, Table 2 shows the evaluation results.

＜実施例１＞
２８ゲージからなる３枚筬のトリコット編機を使用し、編組織を図４に示すように編成した。すなわち、Ｌ１（後筬）とＬ２（中筬）にそれぞれポリエステル５６ｄｔｅｘ／２４ｆＦＤＹ（フルドローヤーン）セミダル糸を１ｉｎ１ｏｕｔで導糸し、Ｌ３（前筬）にポリエステル１１０ｄｔｅｘ／４８ｆＤＴＹ（ドローンテクスチャードヤーン）セミダル糸をフルセットで導糸し、コード編組織がアンダーラップ６針となるように編成した。なお、Ｌ３～Ｌ１の各ランナー長は表１に示す通りとした。次に、得られた編地を液流染色機にて分散染料で温度１３５℃×１５分間染色した後、脱水、拡布し温度１５０℃×２分間乾燥した。次に、乾燥後の編地をポリエステル樹脂分散液（樹脂濃度６％）にディッピングすることで編地全体にポリエステル樹脂を塗布した。続いて温度１６０℃×２分間幅出し加工を施して天井用表皮材を得た。得られた天井用表皮材の目付けは２８０ｇ／ｍ^２で、密度は３８ウェール／インチ、４５コース／インチであった。また、全厚みは１．３ｍｍ、シンカーループの厚みは０．８ｍｍであり、ループ厚の全厚に占める割合（％）は６２％で、ヨコの剛軟度（曲げ長さ）は６４ｍｍであった。したがって、厚みの評価、柔軟性の評価と作業性の評価はどれも「◎」で合格であった。 <Example 1>
A 28-gauge three-reed tricot knitting machine was used to knit the knitted structure as shown in FIG. That is, polyester 56dtex/24f FDY (full-draw yarn) semi-dull yarn is introduced to L1 (rear reed) and L2 (middle reed) with 1 in 1 out, and polyester 110 dtex/48f DTY (drone textured yarn) is introduced to L3 (front reed). The semi-dull yarn was introduced in a full set and knitted so that the cord knitting structure had 6 underlap stitches. The runner lengths of L3 to L1 were as shown in Table 1. Next, the obtained knitted fabric was dyed with a disperse dye at a temperature of 135° C. for 15 minutes using a jet dyeing machine, dehydrated, spread, and dried at a temperature of 150° C. for 2 minutes. Next, the knitted fabric after drying was dipped in a polyester resin dispersion (resin concentration: 6%) to coat the entire knitted fabric with the polyester resin. Subsequently, a tentering process was performed at a temperature of 160° C. for 2 minutes to obtain a ceiling covering material. The obtained ceiling covering material had a basis weight of 280 g/m ² and a density of 38 wales/inch and 45 courses/inch. The total thickness was 1.3 mm, the thickness of the sinker loop was 0.8 mm, the ratio (%) of the loop thickness to the total thickness was 62%, and the transverse bending resistance (bending length) was 64 mm. rice field. Therefore, evaluation of thickness, evaluation of flexibility, and evaluation of workability were all "⊚" and passed.

＜実施例２＞
実施例１において、Ｌ３（前筬）にポリエステル１１０ｄｔｅｘ／４８ｆＤＴＹ（ドローンテクスチャードヤーン）セミダル糸をフルセットで導糸し、コード編組織がアンダーラップを３針となるようにし、Ｌ３の編組織、及びＬ３～Ｌ１の各ランナー長を表１に示す通りとした以外は実施例１と同様にして天井用表皮材を得た。得られた天井用表皮材の目付けは２２０ｇ／ｍ^２で、密度は３８ウェール／インチ、４５コース／インチであった。また、全厚みは１．０ｍｍ、シンカーループの厚みは０．５ｍｍであり、ループ厚の全厚に占める割合（％）は５０％で、ヨコの剛軟度（曲げ長さ）は４１ｍｍであった。したがって、厚みの評価、柔軟性の評価と作業性の評価はどれも「〇」で合格であった。 <Example 2>
In Example 1, a full set of polyester 110dtex/48f DTY (drone textured yarn) semi-dull yarn was introduced to L3 (front reed) so that the cord knitting structure had three underlaps, and the knitting structure of L3 , and runner lengths L3 to L1 were set as shown in Table 1 to obtain a ceiling covering material in the same manner as in Example 1. The obtained ceiling covering material had a basis weight of 220 g/m ² and a density of 38 wales/inch and 45 courses/inch. The total thickness was 1.0 mm, the thickness of the sinker loop was 0.5 mm, the ratio (%) of the loop thickness to the total thickness was 50%, and the transverse bending resistance (bending length) was 41 mm. rice field. Therefore, evaluation of thickness, evaluation of flexibility, and evaluation of workability were all "O" and passed.

＜実施例３＞
実施例１において、編糸を替えて表１に示す編糸を用いてＬ３～Ｌ１の各ランナー長を表１に示す通りとし、編地をポリエステル樹脂分散液（樹脂濃度６％）にディッピングしなかった以外は実施例１と同様にして天井用表皮材を得た。得られた天井用表皮材の目付けは３２０ｇ／ｍ^２で、密度は３８ウェール／インチ、４１コース／インチであった。また、全厚みは１．５ｍｍ、シンカーループの厚みは０．９ｍｍであり、ループ厚の全厚に占める割合（％）は６０％で、ヨコの剛軟度（曲げ長さ）は４５ｍｍであった。したがって、厚みの評価と柔軟性の評価はともに「◎」、作業性の評価は「〇」でどれも合格であった。 <Example 3>
In Example 1, the knitting yarn was changed and the knitting yarn shown in Table 1 was used to set each runner length of L3 to L1 as shown in Table 1, and the knitted fabric was dipped in a polyester resin dispersion (resin concentration 6%). A ceiling covering material was obtained in the same manner as in Example 1, except that there was no The obtained ceiling skin material had a basis weight of 320 g/m ² , a density of 38 wales/inch and 41 courses/inch. The total thickness was 1.5 mm, the sinker loop thickness was 0.9 mm, the ratio (%) of the loop thickness to the total thickness was 60%, and the horizontal bending resistance (bending length) was 45 mm. rice field. Therefore, the evaluation of thickness and the evaluation of flexibility were both "⊚", and the evaluation of workability was "◯", all of which were acceptable.

＜実施例４＞
実施例３において、起毛機を用いて編地のシンカーループの面に起毛厚み０．４ｍｍのセミカット起毛処理を施した以外は実施例３と同様にして天井用表皮材を得た。得られた天井用表皮材の目付けは３３８ｇ／ｍ^２で、密度は３９ウェール／インチ、４０コース／インチであった。また、全厚みは１．８ｍｍ、シンカーループの厚みは１．３ｍｍであり、ループ厚の全厚に占める割合（％）７２％で、ヨコの剛軟度（曲げ長さ）は５８ｍｍであった。したがって、厚みの評価、柔軟性の評価と作業性の評価はどれも「◎」で合格であった。 <Example 4>
A ceiling covering material was obtained in the same manner as in Example 3, except that the surface of the sinker loop of the knitted fabric was subjected to a semi-cut raising treatment with a raising thickness of 0.4 mm using a raising machine. The obtained ceiling skin material had a basis weight of 338 g/m ² , a density of 39 wales/inch and 40 courses/inch. The total thickness was 1.8 mm, the thickness of the sinker loop was 1.3 mm, the ratio (%) of the loop thickness to the total thickness was 72%, and the horizontal bending resistance (bending length) was 58 mm. . Therefore, evaluation of thickness, evaluation of flexibility, and evaluation of workability were all "⊚" and passed.

＜実施例５＞
実施例１において、２８ゲージの編機を替えて３６ゲージからなる３枚筬のトリコット編機を使用し、Ｌ３（前筬）の編糸を替えてポリエステル８４ｄｔｅｘ／３６ｆＤＴＹ（ドローンテクスチャードヤーン）セミダル糸を用い、フルセットで導糸し、コード編組織がアンダーラップを８針となるようにし、Ｌ３の編組織、及びＬ３～Ｌ１の各ランナー長を表１に示す通りとし、編地をポリエステル樹脂分散液（樹脂濃度６％）にディッピングしなかった以外は実施例１と同様にして天井用表皮材を得た。得られた天井用表皮材の目付けは３４０ｇ／ｍ^２で、密度は４８ウェール／インチ、５７コース／インチであった。また、全厚みは１．６ｍｍ、シンカーループの厚みは１．０ｍｍであり、ループ厚の全厚に占める割合（％）は６３％で、ヨコの剛軟度（曲げ長さ）は４８ｍｍであった。したがって、厚みの評価と柔軟性の評価はともに「◎」、作業性の評価は「〇」でどれも合格であった。 <Example 5>
In Example 1, the 28-gauge knitting machine was replaced with a 36-gauge three-reed tricot knitting machine, and the L3 (front reed) knitting yarn was replaced with polyester 84dtex/36f DTY (drone textured yarn). Using a semi-dull yarn, introduce a full set of yarns, make the cord knitting structure have 8 underlaps, set the knitting structure of L3 and the length of each runner from L3 to L1 as shown in Table 1, and knit the fabric. A ceiling covering material was obtained in the same manner as in Example 1, except that the polyester resin dispersion (resin concentration: 6%) was not dipped. The obtained ceiling covering material had a basis weight of 340 g/m ² and a density of 48 wales/inch and 57 courses/inch. The total thickness was 1.6 mm, the thickness of the sinker loop was 1.0 mm, the ratio (%) of the loop thickness to the total thickness was 63%, and the transverse bending resistance (bending length) was 48 mm. rice field. Therefore, the evaluation of thickness and the evaluation of flexibility were both "⊚", and the evaluation of workability was "◯", all of which were acceptable.

＜実施例６＞
実施例５において、Ｌ３（前筬）にポリエステル８４ｄｔｅｘ／３６ｆＤＴＹ（ドローンテクスチャードヤーン）セミダル糸をフルセットで導糸し、コード編組織がアンダーラップを１２針となるようにし、Ｌ３の編組織、及びＬ３～Ｌ１の各ランナー長を表１に示す通りとし、編地をポリエステル樹脂分散液（樹脂濃度６％）にディッピングした以外は実施例５と同様にして天井用表皮材を得た。得られた天井用表皮材の目付けは４００ｇ／ｍ^２で、密度は４６ウェール／インチ、５３コース／インチであった。また、全厚みは２．１ｍｍ、シンカーループの厚みは１．６ｍｍであり、ループ厚の全厚に占める割合（％）は７６％で、ヨコの剛軟度（曲げ長さ）は９５ｍｍであった。したがって、厚みの評価、柔軟性の評価と作業性の評価はどれも「◎」で合格であった。 <Example 6>
In Example 5, a full set of polyester 84dtex / 36f DTY (drone textured yarn) semi-dull yarn was introduced to L3 (front reed), and the cord knitting structure had 12 underlaps, and the knitting structure of L3 , and each runner length of L3 to L1 was as shown in Table 1, and a ceiling covering material was obtained in the same manner as in Example 5 except that the knitted fabric was dipped in a polyester resin dispersion (resin concentration: 6%). The obtained ceiling covering material had a basis weight of 400 g/m ² and a density of 46 wales/inch and 53 courses/inch. The total thickness was 2.1 mm, the thickness of the sinker loop was 1.6 mm, the ratio (%) of the loop thickness to the total thickness was 76%, and the transverse bending resistance (bending length) was 95 mm. rice field. Therefore, evaluation of thickness, evaluation of flexibility, and evaluation of workability were all "⊚" and passed.

＜比較例１＞
実施例２において、編糸を替えて表１に示す編糸を用いてＬ３～Ｌ１の各ランナー長を表１に示す通りとし、編地をポリエステル樹脂分散液（樹脂濃度６％）にディッピングしなかった以外は実施例２と同様にして表皮材を得た。得られた表皮材の目付けは１８０ｇ／ｍ^２で、密度は４６ウェール／インチ、５３コース／インチであった。また、全厚みは０．７ｍｍ、シンカーループの厚みは０．３４ｍｍであり、ループ厚の全厚に占める割合（％）は４９％で、ヨコの剛軟度（曲げ長さ）は２８ｍｍであった。したがって、厚みの評価と作業性の評価はともに「×」で、柔軟性の評価だけ「〇」で合格であった。このように自動車のポリウレタンフォームを必要としない天井用の表皮材としては不適切であった。 <Comparative Example 1>
In Example 2, the knitting yarn was changed and the knitting yarn shown in Table 1 was used to set each runner length of L3 to L1 as shown in Table 1, and the knitted fabric was dipped in a polyester resin dispersion (resin concentration 6%). A skin material was obtained in the same manner as in Example 2, except that it was not used. The obtained skin material had a basis weight of 180 g/m ² and a density of 46 wales/inch and 53 courses/inch. The total thickness was 0.7 mm, the thickness of the sinker loop was 0.34 mm, the ratio (%) of the loop thickness to the total thickness was 49%, and the transverse bending resistance (bending length) was 28 mm. rice field. Therefore, both the evaluation of thickness and the evaluation of workability were "x", and only the evaluation of flexibility was "o" and passed. Thus, it was not suitable as a covering material for automobile ceilings, which does not require polyurethane foam.

上記のようにして得られた天井用表皮材について次の各評価法に基づいて評価した。 The ceiling covering materials obtained as described above were evaluated based on the following evaluation methods.

＜厚み評価方法＞
マイクロスコープ（株式会社キーエンス製、デジタルマイクロスコープＶＨＸ－６０００）を用いて表皮材の巾方向の断面を観察し、表皮材の全厚を測定した。次の判定基準で評価し、判定の「〇」以上を合格とした。
（判定基準）
「◎」：１．２ｍｍ以上
「〇」：０．９ｍｍ以上１．２ｍｍ未満
「×」：０．９ｍｍ未満 <Thickness evaluation method>
Using a microscope (Digital Microscope VHX-6000 manufactured by KEYENCE CORPORATION), the cross section of the skin material was observed in the width direction to measure the total thickness of the skin material. Evaluation was made according to the following criteria, and evaluations of "O" or higher were regarded as acceptable.
(criterion)
“◎”: 1.2 mm or more “〇”: 0.9 mm or more and less than 1.2 mm “×”: less than 0.9 mm

＜柔軟性の評価方法＞
天井基材４の凹凸を吸収し表皮材の表面の品位を保つフラットでなめらかな仕上がりが得られるような柔軟性を、シンカーループの厚みの割合から評価した。具体的には、マイクロスコープ（株式会社キーエンス製、デジタルマイクロスコープＶＨＸ－６０００）を用いて表皮材のシンカーループの厚みを観察し、ループ厚を測定して全厚に対する割合を算出した。次の判定基準で評価し、判定の「〇」以上を合格とした。
（判定基準）
「◎」：６０％以上８０％未満
「〇」：４０％以上６０％未満
「×」：４０％未満 <Method for evaluating flexibility>
The flexibility to obtain a flat and smooth finish that absorbs the unevenness of the ceiling base material 4 and maintains the quality of the surface of the covering material was evaluated from the ratio of the thickness of the sinker loop. Specifically, the thickness of the sinker loop of the skin material was observed using a microscope (Digital Microscope VHX-6000 manufactured by Keyence Corporation), the loop thickness was measured, and the ratio to the total thickness was calculated. Evaluation was made according to the following criteria, and evaluations of "O" or higher were regarded as acceptable.
(criterion)
“◎”: 60% or more and less than 80% “〇”: 40% or more and less than 60% “×”: less than 40%

＜作業性の評価方法＞
表皮材と天井基材を接着する際に編地の剛軟度により表皮材のシワの発生度合いが異なるので、シワを取り除きながら又はシワが発生しないようにしながら作業するため、作業時間が増加してしまう傾向にある。そこで、シワの発生が抑制されると作業性効率が向上することから、作業性を剛軟度から評価した。剛軟度（曲げ長さ）は、ＪＩＳＬ１０９６（２０１０年版）の４５°カンチレバー法に準拠し測定した。試験片は、編地のウェール方向をヨコ方向、編地のコース方向をタテ方向としてそれぞれ幅２．５ｃｍ×長さ２０ｃｍサイズに裁断したものを用いた。試験片を、４５°の斜面を持つ滑らかな平面台からその一端を緩やかに斜面の上に押し出し、その端が斜面に接した時の試験片の押し出された長さを剛軟度とした。次の判定基準で評価し、判定の「〇」以上を合格とした。
（判定基準）
「◎」：５０ｍｍ以上１１０ｍｍ未満
「〇」：３５ｍｍ以上５０ｍｍ未満
「×」：３５ｍｍ未満 <Evaluation method for workability>
When the surface material and the ceiling base material are bonded, the degree of wrinkles in the surface material differs depending on the bending resistance of the knitted fabric. tend to be lost. Therefore, the workability was evaluated from the bending resistance because the efficiency of workability is improved when the occurrence of wrinkles is suppressed. The bending resistance (bending length) was measured according to the 45° cantilever method of JIS L 1096 (2010 version). The test piece was cut into a size of 2.5 cm in width and 20 cm in length, with the wale direction of the knitted fabric as the horizontal direction and the course direction of the knitted fabric as the vertical direction. One end of the test piece was gently extruded onto the slope from a smooth flat table with a slope of 45°. Evaluation was made according to the following criteria, and evaluations of "O" or higher were regarded as acceptable.
(criterion)
“◎”: 50 mm or more and less than 110 mm “〇”: 35 mm or more and less than 50 mm “×”: less than 35 mm

表２から明らかなように、本発明に係る実施例１～６の天井用表皮材は編組織及び糸使いにより厚みを得ることで柔軟性に優れ、後加工での作業性に優れるためポリウレタンフォームを積層する必要のない表皮材であった。これに対して、比較例１の布帛では、柔軟性はあるものの厚み及び作業性が「×」でかなり劣るものであった。 As is clear from Table 2, the ceiling covering materials of Examples 1 to 6 according to the present invention are excellent in flexibility by obtaining thickness through the use of knitted structure and yarn, and are excellent in workability in post-processing. It was a skin material that did not need to be laminated. On the other hand, the fabric of Comparative Example 1 had flexibility, but the thickness and workability of the fabric were evaluated as "Poor".

本発明に係る天井用表皮材は、ポリウレタンフォームを積層する必要がなく、柔軟性に優れるため天井用表皮材をとして好適に用いられる。 The ceiling covering material according to the present invention does not need to be laminated with polyurethane foam, and is excellent in flexibility, so that it can be suitably used as a ceiling covering material.

１・・・表皮材（天井用表皮材）
２・・・ニードルループ
３・・・シンカーループ
４・・・天井基材
５・・・表皮層
５－１・・・表皮
５－２・・・ポリウレタンフォーム（軟質）
T・・・表皮材の厚み
T１・・・シンカーループの厚み 1 ... skin material (ceiling skin material)
2 Needle loop 3 Sinker loop 4 Ceiling base material 5 Skin layer 5-1 Skin 5-2 Polyurethane foam (soft)
T・・・Thickness of skin material
T1・・・Thickness of sinker loop

Claims

A skin material laminated on the ceiling base material of an automobile,
A tricot knitted fabric in which the skin material is knitted by L1 (rear reed), L2 (middle reed) and L3 (front reed) of a tricot knitting machine,
The surface of the needle loop formed by the L1 (rear reed) and the L2 (middle reed) is the surface of the skin material,
A false twisted yarn is passed through the L3 (front reed) and has a knitting structure of 2 to 12 stitches,
The surface of the sinker loop on which the false twisted yarn stands in the thickness direction of the skin material is the back surface of the skin material,
A covering material for a ceiling, characterized in that the covering material has a thickness of 0.9 mm or more.

2. The ceiling covering material according to claim 1, wherein the false twisted yarn has a total fineness of 20 dtex to 330 dtex and a single yarn fineness of 0.1 dtex to 22 dtex.

The ceiling covering material according to claim 1 or 2, wherein the transverse bending resistance (bending length) of the covering material is 35 mm to 110 mm.

The ceiling according to any one of claims 1 to 3, wherein the thickness of the sinker loop is 0.4 mm to 2.0 mm, and the percentage of the thickness (mm) of the skin material is 40% to 80%. skin material.

The ceiling covering material according to any one of claims 1 to 4, wherein one selected from the group consisting of polyurethane-based resin, acrylic-based resin, and polyester-based resin is adhered to the tricot knitted fabric.