JP2013022946A - Reinforced fiber sheet, fiber-reinforced composite material, method for manufacturing reinforced fiber sheet, and method for manufacturing fiber-reinforced composite material - Google Patents

Reinforced fiber sheet, fiber-reinforced composite material, method for manufacturing reinforced fiber sheet, and method for manufacturing fiber-reinforced composite material Download PDF

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JP2013022946A
JP2013022946A JP2011163250A JP2011163250A JP2013022946A JP 2013022946 A JP2013022946 A JP 2013022946A JP 2011163250 A JP2011163250 A JP 2011163250A JP 2011163250 A JP2011163250 A JP 2011163250A JP 2013022946 A JP2013022946 A JP 2013022946A
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reinforcing fiber
sheet
reinforcing
fiber bundle
fiber sheet
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JP5614384B2 (en
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Fujio Hori
藤夫 堀
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Toyota Industries Corp
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Toyota Industries Corp
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Priority to PCT/JP2012/067112 priority patent/WO2013015087A1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
    • B32B5/24—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
    • B32B5/26—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
    • B29C70/28—Shaping operations therefor
    • B29C70/30—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core
    • B29C70/38—Automated lay-up, e.g. using robots, laying filaments according to predetermined patterns
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/737—Articles provided with holes, e.g. grids, sieves

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  • Laminated Bodies (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
  • Reinforced Plastic Materials (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide a reinforced fiber sheet and a fiber-reinforced composite material excellent in strength quality.SOLUTION: A belt-shaped reinforced fiber sheet 12E includes fabrics 13E and a bundle of reinforced fibers 14 stuck on the adhesive surface 131 of the fabrics 13E. An arrangement region formed in arrangement by the bundle of reinforced fibers 14 is separated into a straight line arrangement part 141 arranged in a longitudinal direction of the reinforced fiber sheet and an arrangement part 142 arranged in the longitudinal direction of the reinforced fiber sheet, reversed while drawing a semicircle, and arranged in the longitudinal direction of the reinforced fiber sheet. The arrangement part 142 is provided with a turnabout part Ho which turns about in a continuous state and a space region Q is formed between the turnabout part Ho and one end of the straight line arrangement part 141.

Description

本発明は、樹脂強化用の強化繊維シート、繊維強化複合材、及び強化繊維シートの製造方法、並びに繊維強化複合材の製造方法に関する。   The present invention relates to a reinforcing fiber sheet for resin reinforcement, a fiber-reinforced composite material, a method for manufacturing a reinforcing fiber sheet, and a method for manufacturing a fiber-reinforced composite material.

繊維強化複合材の製作には、強化繊維基材に半硬化の熱硬化性樹脂を予め含浸させてシート状に製造されたプリプレグを用いる方法、あるいは強化繊維基材を積層して製造されたプリフォームを用いる方法等が知られている。   Fabrication of a fiber reinforced composite material involves the use of a prepreg produced in a sheet form by impregnating a reinforcing fiber substrate with a semi-cured thermosetting resin in advance, or a prepreg produced by laminating reinforcing fiber substrates. A method using reform is known.

プリプレグを用いる方法では、熱硬化性樹脂を予め含浸しているため、新たにマトリックスを付加すること無く繊維強化複合材を製作できるという利点がある。その反面、プリプレグを用いる方法では、バギングフィルムを用いて真空引きした後に大型のオートクレーブによりプリプレグを熱硬化させる等、大型の装置を使用する必要がある。そのため、エネルギー消費が大きく、コストアップにも繋がるという問題がある。又、プリプレグは、保管方法や使用期限等に制約があり、管理が複雑であるという問題もある。   In the method using prepreg, since the thermosetting resin is impregnated in advance, there is an advantage that a fiber-reinforced composite material can be manufactured without newly adding a matrix. On the other hand, in the method using prepreg, it is necessary to use a large apparatus, such as heat-curing the prepreg with a large autoclave after vacuuming with a bagging film. Therefore, there is a problem that energy consumption is large, leading to an increase in cost. In addition, the prepreg has a problem that the storage method and the expiration date are limited and the management is complicated.

一方、プリフォームを用いる方法では、大型の装置を用いる必要が無いため、比較的簡便に使用できる利点がある。
特許文献１には、一方向に強化繊維を引き揃えたシート状物が強化繊維の方向を異ならせるように２層以上積層されており、これらのシート状物が少なくとも２枚の樹脂透過性基布によって固定されている。樹脂透過性基布は、加熱によって融解する樹脂を繊維にコーティングしたメッシュ状物である。シート状物は、加熱によって融解した樹脂によって樹脂透過性基布に貼り付け固定される。 On the other hand, the method using the preform has an advantage that it can be used relatively easily because it is not necessary to use a large apparatus.
In Patent Document 1, two or more layers of sheet-like materials in which reinforcing fibers are aligned in one direction are laminated so that the directions of the reinforcing fibers are different, and these sheet-like materials have at least two resin-permeable groups. It is fixed by cloth. The resin-permeable base fabric is a mesh-like product in which fibers are coated with a resin that melts by heating. The sheet-like material is affixed and fixed to a resin-permeable base fabric with a resin melted by heating.

特開２００１−３８８４０号公報JP 2001-38840 A

しかし、特許文献１に開示の強化繊維シートでは、シート状物が直線状態で樹脂透過性基布に貼り付けられている。全てのシート状物の配向状態を直線状態とする構成では、強化繊維シートを所望の形状に形成するのにシート状物を途中で切断する箇所が多くなり、強度的な品質で問題がある。   However, in the reinforcing fiber sheet disclosed in Patent Document 1, the sheet-like material is attached to the resin-permeable base fabric in a straight line state. In the configuration in which the orientation state of all the sheet-like materials is a linear state, there are many places where the sheet-like material is cut in the middle to form the reinforcing fiber sheet in a desired shape, and there is a problem in strength quality.

本発明は、強度的な品質に優れた強化繊維シート及び繊維強化複合材を提供することを目的とする。   An object of this invention is to provide the reinforced fiber sheet and fiber reinforced composite material excellent in strength quality.

請求項１乃至請求項７の発明は、強化繊維シートを対象とし、請求項１の発明では、層間強化材からなる多孔シートと、前記多孔シートの少なくとも一方の面に付着された熱融着材と、前記多孔シートの前記一方の面において前記熱融着材に接着された強化繊維束とを備え、少なくとも一部の前記強化繊維束には、前記強化繊維束が屈曲又は湾曲された方向転換部が形成されている。なお、層間強化材が多孔シートであるのは、強化繊維シートを積層した後にマトリックス樹脂を含浸させる場合に、シートに孔が形成されていないとマトリックス樹脂が含浸しないためである。   The inventions of claims 1 to 7 are directed to a reinforcing fiber sheet. In the invention of claim 1, a porous sheet made of an interlayer reinforcing material, and a heat sealing material attached to at least one surface of the porous sheet. And a reinforcing fiber bundle bonded to the heat-sealing material on the one surface of the porous sheet, and at least a part of the reinforcing fiber bundle has a direction change in which the reinforcing fiber bundle is bent or curved. The part is formed. The reason why the interlayer reinforcing material is a porous sheet is that when the reinforcing fiber sheets are laminated and the matrix resin is impregnated, the matrix resin is not impregnated unless holes are formed in the sheet.

このような方向転換部の存在は、強化繊維束の切断箇所を少なくして強化繊維シートを強度的な品質に優れたものとする。なお、層間強化材とは、繊維強化複合材の層間を高靭性化して耐衝撃性を向上させるものであることを意味する。   Presence of such a direction change part makes the reinforcing fiber sheet excellent in strength quality by reducing the number of cut portions of the reinforcing fiber bundle. The interlayer reinforcing material means that the interlayer of the fiber reinforced composite material is toughened to improve impact resistance.

好適な例では、前記多孔シートは、織物である。
織物の織り目は、樹脂の浸透の上で好ましい孔である。
好適な例では、前記織物は、平織物である。 In a preferred example, the porous sheet is a woven fabric.
The texture of the woven fabric is a preferable hole in terms of resin penetration.
In a preferred example, the fabric is a plain fabric.

平織物は、強化繊維シートの厚みを小さくする上で好ましい。
好適な例では、前記織物の糸は、前記熱融着材によって被膜されている。
熱融着材によって被膜されている糸は、強化繊維束を織物に貼り付ける上で簡便な素材である。 A plain fabric is preferable for reducing the thickness of the reinforcing fiber sheet.
In a preferred example, the yarn of the fabric is coated with the heat sealing material.
The yarn coated with the heat-sealing material is a simple material for attaching the reinforcing fiber bundle to the woven fabric.

好適な例では、前記層間強化材は、熱可塑性樹脂である。
好適な例では、少なくとも一部の前記強化繊維束には、直線配列部と方向転換部とが形成されている。 In a preferred example, the interlayer reinforcing material is a thermoplastic resin.
In a preferred example, at least some of the reinforcing fiber bundles are formed with a linear array portion and a direction changing portion.

好適な例では、少なくとも一部の前記強化繊維束には、半円弧状の方向転換部と該方向転換部の一対の端部のそれぞれから延在する直線配列部が形成されている。
請求項８の発明は、強化繊維シートの製造方法を対象とし、少なくとも一方の面に熱融着材が付着した層間強化材からなる多孔シートを準備する準備工程と、前記多孔シートの前記一方の、強化繊維束を加熱ローラによって加圧して接着させる加熱・加圧工程とを備え、前記加熱ローラは、前記層間強化材の融点以下前記熱融着材の融点以上の温度に加熱される。 In a preferred example, at least a part of the reinforcing fiber bundle is formed with a semicircular arc direction changing portion and a linear array portion extending from each of the pair of end portions of the direction changing portion.
The invention according to claim 8 is directed to a method for producing a reinforcing fiber sheet, and includes a preparation step of preparing a porous sheet made of an interlayer reinforcing material having a heat-sealing material attached to at least one surface, and the one of the porous sheets. And a heating / pressurizing step in which the reinforcing fiber bundle is pressed and adhered by a heating roller, and the heating roller is heated to a temperature not higher than the melting point of the interlayer reinforcing material and not lower than the melting point of the heat sealing material.

請求項９の発明は、請求項１乃至請求項７のいずれか１項に記載の強化繊維シートを少なくとも含む複数の強化繊維シートを積層した積層体にマトリックス樹脂を含浸させてなる繊維強化複合材である。   The invention of claim 9 is a fiber-reinforced composite material obtained by impregnating a matrix resin into a laminate in which a plurality of reinforcing fiber sheets including at least the reinforcing fiber sheet according to any one of claims 1 to 7 is laminated. It is.

請求項１０の発明は、繊維強化複合材の製造方法を対象とし、少なくとも一方の面に熱融着材が付着した層間強化材からなる多孔シートを準備する準備工程と、前記多孔シートの前記一方の、強化繊維束を加熱ローラによって加圧して接着させる加熱・加圧工程と、前記一方の面に前記強化繊維束が接着した前記強化繊維シートを積層する積層工程と、前記強化繊維シートを積層にマトリックス樹脂を含浸させる含浸工程とを備える。   The invention of claim 10 is directed to a method for producing a fiber reinforced composite material, and includes a preparatory step of preparing a porous sheet made of an interlayer reinforcing material having a heat fusion material attached to at least one surface, and the one of the porous sheets A heating / pressing step in which the reinforcing fiber bundle is pressed and adhered by a heating roller, a laminating step in which the reinforcing fiber sheet having the reinforcing fiber bundle adhered to the one surface is laminated, and the reinforcing fiber sheet is laminated. And an impregnation step of impregnating with a matrix resin.

本発明の強化繊維シート及び繊維強化複合材は、強度的な品質に優れるという効果を奏する。   The reinforcing fiber sheet and the fiber-reinforced composite material according to the present invention have an effect of excellent strength quality.

第１の実施形態を示し、（ａ）は、繊維強化複合材の斜視図。（ｂ）は、積層体の概略斜視図。（ｃ）は、複数の強化繊維シートの斜視図。The 1st embodiment is shown and (a) is a perspective view of a fiber reinforced composite material. (B) is a schematic perspective view of a laminated body. (C) is a perspective view of a plurality of reinforcing fiber sheets. 平織物の断面図。Sectional drawing of a plain fabric. 供給装置の模式図。The schematic diagram of a supply apparatus. 加熱ローラの方向転換を説明する平面図。The top view explaining direction change of a heating roller. 第２の実施形態を示す供給装置の模式図。The schematic diagram of the supply apparatus which shows 2nd Embodiment.

以下、本発明を具体化した第１の実施形態を図１〜図４に基づいて説明する。
図１（ａ）に示すように、繊維強化複合材１０は、帯形状に形成されている。帯形状に形成された繊維強化複合材１０の長さ方向の一端部には孔１０１が貫設されており、孔１０１の周囲には半円弧縁１０２が形成されている。繊維強化複合材１０は、図１（ｂ）に示す積層体１１に熱硬化性樹脂（例えばエポキシ樹脂）を含浸させて構成されている。積層体１１は、図１（ｃ）に示す複数の強化繊維シート１２Ａ，１２Ｂ，１２Ｃ，１２Ｄ，１２Ｅを積層して構成されている。 Hereinafter, a first embodiment of the present invention will be described with reference to FIGS.
As shown to Fig.1 (a), the fiber reinforced composite material 10 is formed in strip | belt shape. A hole 101 is provided at one end in the length direction of the fiber reinforced composite material 10 formed in a band shape, and a semicircular arc edge 102 is formed around the hole 101. The fiber reinforced composite material 10 is configured by impregnating a laminated body 11 shown in FIG. 1B with a thermosetting resin (for example, epoxy resin). The laminate 11 is configured by laminating a plurality of reinforcing fiber sheets 12A, 12B, 12C, 12D, and 12E shown in FIG.

図１（ｃ）に示すように、帯形状の強化繊維シート１２Ａは、多孔シートである織物１３Ａと、強化繊維シート１２Ａの長さ方向に引き揃えられた強化繊維束１４Ａとから構成されている。強化繊維束１４Ａは、織物１３Ａの一方の面（接着面１３１）に貼り付けられている。帯形状の強化繊維シート１２Ｂは、織物１３Ｂと、強化繊維シート１２Ｂの長さ方向に対して１３５°で斜交する方向に引き揃えられた強化繊維束１４Ｂとから構成されている。強化繊維束１４Ｂは、織物１３Ｂの接着面１３１に貼り付けられている。   As shown in FIG. 1C, the belt-shaped reinforcing fiber sheet 12A includes a woven fabric 13A that is a porous sheet and a reinforcing fiber bundle 14A that is aligned in the length direction of the reinforcing fiber sheet 12A. . The reinforcing fiber bundle 14A is affixed to one surface (bonding surface 131) of the fabric 13A. The belt-shaped reinforcing fiber sheet 12B includes a woven fabric 13B and reinforcing fiber bundles 14B that are aligned in a direction oblique to the longitudinal direction of the reinforcing fiber sheet 12B at 135 °. The reinforcing fiber bundle 14B is affixed to the bonding surface 131 of the fabric 13B.

帯形状の強化繊維シート１２Ｃは、織物１３Ｃと、強化繊維シート１２Ｃの長さ方向に対して４５°で斜交する方向に引き揃えられた強化繊維束１４Ｃとから構成されている。強化繊維束１４Ｃは、織物１３Ｃの接着面１３１に貼り付けられている。帯形状の強化繊維シート１２Ｄは、織物１３Ｄと、強化繊維シート１２Ｂの幅方向に引き揃えられた強化繊維束１４Ｄとから構成されている。強化繊維束１４Ｄは、織物１３Ｄの接着面１３１に貼り付けられている。   The belt-shaped reinforcing fiber sheet 12C is composed of a woven fabric 13C and a reinforcing fiber bundle 14C that is aligned in a direction oblique to the longitudinal direction of the reinforcing fiber sheet 12C at 45 °. The reinforcing fiber bundle 14C is affixed to the bonding surface 131 of the fabric 13C. The belt-shaped reinforcing fiber sheet 12D is composed of a woven fabric 13D and a reinforcing fiber bundle 14D aligned in the width direction of the reinforcing fiber sheet 12B. The reinforcing fiber bundle 14D is affixed to the bonding surface 131 of the fabric 13D.

一対の帯形状の強化繊維シート１２Ｅは、織物１３Ｅと、織物１３Ｅの接着面１３１に貼り付けられた強化繊維束１４Ｅとから構成されている。強化繊維束１４Ｅによって配列形成された配列領域は、強化繊維シート１２Ｅの長さ方向に引き揃えられた直線配列部１４１と、強化繊維シート１２Ｅの長さ方向に引き揃えられた後に半円を描きながら反転して強化繊維シート１２Ｅの長さ方向に引き揃えられた配列部１４２とに分かれている。配列部１４２は、連続した状態で方向転換する半円弧状の方向転換部Ｈｏを備えており、方向転換部Ｈｏと直線配列部１４１の一端部との間には空領域Ｑが形成されている。配列部１４２は、半円弧状の方向転換部Ｈｏの一対の端部のそれぞれから延在する直線配列部１４３，１４４を備えている。   The pair of belt-shaped reinforcing fiber sheets 12E includes a woven fabric 13E and a reinforcing fiber bundle 14E attached to the bonding surface 131 of the woven fabric 13E. The array region formed by the reinforcing fiber bundle 14E has a straight array portion 141 aligned in the length direction of the reinforcing fiber sheet 12E and a semicircle after being aligned in the length direction of the reinforcing fiber sheet 12E. However, it is divided into an array portion 142 that is reversed and aligned in the length direction of the reinforcing fiber sheet 12E. The arrangement part 142 includes a semicircular arc direction change part Ho that changes direction in a continuous state, and an empty region Q is formed between the direction change part Ho and one end of the linear array part 141. . The array part 142 includes linear array parts 143 and 144 extending from each of the pair of ends of the semicircular arc-shaped direction changing part Ho.

図２に示すように、織物１３Ａ，１３Ｂ，１３Ｃ，１３Ｄ，１３Ｅは、平織物であり、織物１３Ａ，１３Ｂ，１３Ｃ，１３Ｄ，１３Ｅの経糸Ｔと緯糸Ｙとは、芯糸１５の表面に低融点の被膜１６を有する融着糸である。芯糸１５は、熱可塑性樹脂からなり、被膜１６は、別の熱可塑性樹脂からなる。被膜１６の熱可塑性樹脂としては、その融点Ｔ１が芯糸１５の熱可塑性樹脂の融点Ｔ２よりも低いものが用いられる。被膜１６の熱可塑性樹脂としては、例えば共重合ナイロン、変性ポリエステルあるいはビニロンが用いられ、芯糸１５の熱可塑性樹脂としてはナイロン６あるいはナイロン６６が用いられる。被膜１６は、多孔シートの両面に付着された熱融着材である。なお、ナイロンの代わりにポリエステルを使用しても良い。   As shown in FIG. 2, the fabrics 13A, 13B, 13C, 13D, and 13E are plain fabrics, and the warp T and the weft Y of the fabrics 13A, 13B, 13C, 13D, and 13E are low on the surface of the core yarn 15. A fusing yarn having a coating film 16 having a melting point. The core yarn 15 is made of a thermoplastic resin, and the coating film 16 is made of another thermoplastic resin. As the thermoplastic resin of the coating 16, a resin having a melting point T 1 lower than the melting point T 2 of the thermoplastic resin of the core yarn 15 is used. For example, copolymer nylon, modified polyester, or vinylon is used as the thermoplastic resin of the coating 16, and nylon 6 or nylon 66 is used as the thermoplastic resin of the core yarn 15. The coating 16 is a heat sealing material attached to both surfaces of the porous sheet. Polyester may be used instead of nylon.

強化繊維束１４Ａ，１４Ｂ，１４Ｃ，１４Ｄ，１４Ｅは、加熱によって溶融した被膜１６に付着されて織物１３Ａ，１３Ｂ，１３Ｃ，１３Ｄ，１３Ｅに接着されている。
強化繊維束１４Ａ，１４Ｂ，１４Ｃ，１４Ｄ，１４Ｅは、図３に示す強化繊維シート製造装置１７によって織物１３Ａ，１３Ｂ，１３Ｃ，１３Ｄ，１３Ｅに貼り付けられる。 The reinforcing fiber bundles 14A, 14B, 14C, 14D, and 14E are adhered to the fabrics 13A, 13B, 13C, 13D, and 13E by being attached to the film 16 melted by heating.
The reinforcing fiber bundles 14A, 14B, 14C, 14D, and 14E are attached to the fabrics 13A, 13B, 13C, 13D, and 13E by the reinforcing fiber sheet manufacturing apparatus 17 shown in FIG.

図３に示すように、強化繊維シート製造装置１７は、保持台１８と、保持台１８の上方に配設された供給装置１９とから構成されている。供給装置１９を構成する箱形状のヘッドフレーム２０は、回転軸２１を介して回転装置２２によって回転可能に支持されており、回転装置２２は、回転軸２１を中心にしてヘッドフレーム２０を回動可能である。回転装置２２は、図示しない移動機構によって左右方向（図３において左右方向）及び前後方向（図３において紙面に垂直な方向）に移動可能に支持されている。又、回転装置２２は、図示しない昇降機構によって昇降可能である。   As shown in FIG. 3, the reinforcing fiber sheet manufacturing apparatus 17 includes a holding table 18 and a supply device 19 disposed above the holding table 18. A box-shaped head frame 20 constituting the supply device 19 is rotatably supported by a rotation device 22 via a rotation shaft 21, and the rotation device 22 rotates the head frame 20 around the rotation shaft 21. Is possible. The rotating device 22 is supported by a moving mechanism (not shown) so as to be movable in the left-right direction (left-right direction in FIG. 3) and the front-rear direction (direction perpendicular to the paper surface in FIG. 3). The rotating device 22 can be moved up and down by a lifting mechanism (not shown).

ヘッドフレーム２０の内部には、強化繊維束１４を巻いたボビン２３、一対の供給ローラ２４，２５、張力付与ローラ２６、ガイドローラ２７、一対の送り出しローラ２８，２９、カッター３０及び加熱ローラ３１が内蔵されている。ボビン２３に巻かれた強化繊維束１４は、一対の供給ローラ２４，２５間を通されて張力付与ローラ２６及びガイドローラ２７に接しながら一対の送り出しローラ２８，２９を通される。供給ローラ２５は、圧縮ばね３２のばね力によって供給ローラ２４に圧接されている。張力付与ローラ２６は、引っ張りばね３３のばね力によって強化繊維束１４に一定の張力を付与している。   Inside the head frame 20 are a bobbin 23 around which the reinforcing fiber bundle 14 is wound, a pair of supply rollers 24 and 25, a tension applying roller 26, a guide roller 27, a pair of delivery rollers 28 and 29, a cutter 30 and a heating roller 31. Built in. The reinforcing fiber bundle 14 wound around the bobbin 23 is passed between the pair of supply rollers 24 and 25 and passed through the pair of delivery rollers 28 and 29 while contacting the tension applying roller 26 and the guide roller 27. The supply roller 25 is pressed against the supply roller 24 by the spring force of the compression spring 32. The tension applying roller 26 applies a constant tension to the reinforcing fiber bundle 14 by the spring force of the tension spring 33.

カッター３０は、図示しない駆動装置により適宜のタイミングで仮想線で示す位置まで進出される。これにより送り出しローラ２８，２９と加熱ローラ３１との間で強化繊維束１４が切断される。送り出しローラ２８，２９を通された強化繊維束１４は、加熱ローラ３１と対向する位置に配設されたガイド３４との間に案内される。加熱ローラ３１は、内部に備えたヒータ（図示略）によりローラ表面が昇温される。又、加熱ローラ３１は、図示しない付勢手段により保持台１８に押接可能である。   The cutter 30 is advanced to a position indicated by a virtual line at an appropriate timing by a driving device (not shown). As a result, the reinforcing fiber bundle 14 is cut between the feed rollers 28 and 29 and the heating roller 31. The reinforcing fiber bundle 14 passed through the delivery rollers 28 and 29 is guided between a guide 34 disposed at a position facing the heating roller 31. The surface of the heating roller 31 is heated by a heater (not shown) provided inside. The heating roller 31 can be pressed against the holding table 18 by a biasing means (not shown).

次に、強化繊維シート１２Ｅの製造を説明する。
加熱ローラ３１は、芯糸１５（層間強化材）の融点Ｔ２以下で熱融着材の融点Ｔ１以上の温度に加熱される。図４に示すように、保持台１８の載置面１８１上に織物１３Ｅが載せられて動かないようにされる。この工程は、多孔シートである平織物を準備する準備工程である。 Next, the production of the reinforcing fiber sheet 12E will be described.
The heating roller 31 is heated to a temperature not higher than the melting point T2 of the core yarn 15 (interlayer reinforcing material) and not lower than the melting point T1 of the heat sealing material. As shown in FIG. 4, the fabric 13 </ b> E is placed on the placement surface 181 of the holding table 18 so as not to move. This step is a preparatory step for preparing a plain fabric that is a porous sheet.

加熱ローラ３１とガイド３４との間を通された強化繊維束１４の始端は、ヘッドフレーム２０を移動することによって織物１３Ｅの右端の直上に案内される。その後、ヘッドフレーム２０が下動され、強化繊維束１４の始端部が加熱ローラ３１と織物１３Ｅとの間に挟まれる。   The start end of the reinforcing fiber bundle 14 passed between the heating roller 31 and the guide 34 is guided directly above the right end of the fabric 13E by moving the head frame 20. Thereafter, the head frame 20 is moved downward, and the starting end portion of the reinforcing fiber bundle 14 is sandwiched between the heating roller 31 and the fabric 13E.

加熱ローラ３１は、前記した付勢手段により強化繊維束１４の始端部を織物１３Ｅの右端上に押接する。又、加熱ローラ３１は、前記したヒータの加熱作用によって織物１３Ｅの融着糸の被膜１６を溶融する。これにより、強化繊維束１４の始端部が織物１３Ｅに接着される。   The heating roller 31 presses the starting end portion of the reinforcing fiber bundle 14 onto the right end of the fabric 13E by the urging means described above. The heating roller 31 melts the coating 16 of the fused yarn of the fabric 13E by the heating action of the heater. Thereby, the start end part of the reinforcing fiber bundle 14 is bonded to the fabric 13E.

その後、ヘッドフレーム２０が移動され、加熱ローラ３１が強化繊維束１４を織物１３Ｅ上に押接しながら織物１３Ｅ上を転動してゆく。加熱ローラ３１の転動により強化繊維束１４がボビン２３から引き出されてゆき、加熱ローラ３１とガイド３４との間を通された強化繊維束１４が織物１３Ｅ上に直線的に配列されてゆく。   Thereafter, the head frame 20 is moved, and the heating roller 31 rolls on the fabric 13E while pressing the reinforcing fiber bundle 14 onto the fabric 13E. The reinforcing fiber bundle 14 is pulled out from the bobbin 23 by the rolling of the heating roller 31, and the reinforcing fiber bundle 14 passed between the heating roller 31 and the guide 34 is linearly arranged on the fabric 13E.

図４に示すように、加熱ローラ３１は、鎖線Ｓ１で示す経路に沿って移動される。図中の矢印は、加熱ローラ３１の転動方向を表す。
織物１３Ｅの長さ方向へ直線的に移動された加熱ローラ３１が鎖線Ｓ１で示す経路の直線端近くに達したときには、カッター３０が作動され、強化繊維束１４が加熱ローラ３１とガイド３４との間で切断される。強化繊維束１４の切断後、加熱ローラ３１が鎖線Ｓ１で示す経路の直線端まで転動された後、ヘッドフレーム２０が上動されて加熱ローラ３１が織物１３Ｅの上面から離れると共に、回転装置が作動され、ヘッドフレーム２０が回転軸２１を中心にして９０°回転される。この回転後、ヘッドフレーム２０が織物１３Ｅの幅方向に強化繊維束１４の幅程度移動される。その後、回転装置が作動され、ヘッドフレーム２０が回転軸２１を中心にして９０°回転される。この回転後、ヘッドフレーム２０が下動されて加熱ローラ３１が織物１３Ｅの上面に押接される。その後、ヘッドフレーム２０が織物１３Ｅの長さ方向に移動され、強化繊維束１４が織物１３Ｅの長さ方向に直線的に配列されてゆく。このようなヘッドフレーム２０及び加熱ローラ３１の動作により、強化繊維束１４を直線状に配列した直線配列部１４１が形成される。直線配列部１４１を形成する強化繊維束１４は、加熱ローラ３１の加熱作用によって織物１３Ｅの上面に接着される。 As shown in FIG. 4, the heating roller 31 is moved along a path indicated by a chain line S1. The arrows in the figure indicate the rolling direction of the heating roller 31.
When the heating roller 31 linearly moved in the length direction of the fabric 13E reaches near the linear end of the path indicated by the chain line S1, the cutter 30 is operated, and the reinforcing fiber bundle 14 is moved between the heating roller 31 and the guide 34. Disconnected between. After the cutting of the reinforcing fiber bundle 14, the heating roller 31 is rolled to the linear end of the path indicated by the chain line S1, and then the head frame 20 is moved upward to move the heating roller 31 away from the upper surface of the fabric 13E, and the rotating device When operated, the head frame 20 is rotated by 90 ° about the rotation shaft 21. After this rotation, the head frame 20 is moved about the width of the reinforcing fiber bundle 14 in the width direction of the fabric 13E. Thereafter, the rotating device is operated, and the head frame 20 is rotated by 90 ° about the rotating shaft 21. After this rotation, the head frame 20 is moved down and the heating roller 31 is pressed against the upper surface of the fabric 13E. Thereafter, the head frame 20 is moved in the length direction of the fabric 13E, and the reinforcing fiber bundles 14 are linearly arranged in the length direction of the fabric 13E. By such operations of the head frame 20 and the heating roller 31, the linear array portion 141 in which the reinforcing fiber bundles 14 are linearly formed is formed. The reinforcing fiber bundle 14 forming the linear array portion 141 is bonded to the upper surface of the fabric 13E by the heating action of the heating roller 31.

次に、加熱ローラ３１は、鎖線Ｓ２で示す経路に沿って移動される。織物１３Ｅの長さ方向へ直線的に移動された加熱ローラ３１が鎖線Ｓ２で示す経路の直線端（一例としてＳ２１で示す箇所）に達したときには、ヘッドフレーム２０の動作が円弧を描くように制御される。これにより加熱ローラ３１が鎖線で示すように方向を変えながら織物１３Ｅ上を転動し、強化繊維束１４が半円弧形状に配列される。その後、ヘッドフレーム２０が織物１３Ｅの長さ方向に移動され、強化繊維束１４が織物１３Ｅの長さ方向に直線的に配列されてゆく。このような加熱ローラ３１の動作により、強化繊維束１４を半円弧状に配列した方向転換部Ｈｏを備えた配列部１４２が形成される。配列部１４２を形成する強化繊維束１４は、加熱ローラ３１の加熱作用によって織物１３Ｅの上面に接着される。   Next, the heating roller 31 is moved along a path indicated by a chain line S2. When the heating roller 31 linearly moved in the length direction of the fabric 13E reaches the linear end of the path indicated by the chain line S2 (location indicated by S21 as an example), the operation of the head frame 20 is controlled to draw an arc. Is done. As a result, the heating roller 31 rolls on the fabric 13E while changing its direction as indicated by a chain line, and the reinforcing fiber bundle 14 is arranged in a semicircular arc shape. Thereafter, the head frame 20 is moved in the length direction of the fabric 13E, and the reinforcing fiber bundles 14 are linearly arranged in the length direction of the fabric 13E. By such an operation of the heating roller 31, an array part 142 including a direction changing part Ho in which the reinforcing fiber bundles 14 are arrayed in a semicircular arc shape is formed. The reinforcing fiber bundle 14 forming the array portion 142 is bonded to the upper surface of the fabric 13E by the heating action of the heating roller 31.

織物１３Ｅに接着された直線配列部１４１の先端側と、織物１３Ｅに接着された配列部１４２の一部である方向転換部Ｈｏとの間には強化繊維束１４の空領域Ｑが形成される。
織物１３Ｅに強化繊維束１４を接着させる工程は、多孔シートである織物１３Ｅの一方の、強化繊維束１４を加熱ローラ３１によって加圧して接着させる加熱・加圧工程である。加熱ローラ３１を方向を変えながら織物１３Ｅ上を転動させる工程は、加熱・加圧工程において、加熱ローラ３１を方向転換しながら強化繊維束１４を織物１３Ｅの一方の面（接着面１３１）に接着させる方向転換工程である。 An empty region Q of the reinforcing fiber bundle 14 is formed between the front end side of the linear array portion 141 bonded to the fabric 13E and the direction changing portion Ho that is a part of the array portion 142 bonded to the fabric 13E. .
The step of adhering the reinforcing fiber bundle 14 to the fabric 13E is a heating / pressurizing step in which one reinforcing fiber bundle 14 of the fabric 13E that is a porous sheet is pressed and adhered by the heating roller 31. The step of rolling the heating roller 31 on the fabric 13E while changing the direction is a heating / pressurizing step in which the reinforcing fiber bundle 14 is turned to one surface (bonding surface 131) of the fabric 13E while changing the direction of the heating roller 31. This is a direction changing process for bonding.

他の強化繊維シート１２Ａ，１２Ｂ，１２Ｃ，１２Ｄにおいても、織物１３Ａ，１３Ｂ，１３Ｃ，１３Ｄ上で加熱ローラ３１を転動させて強化繊維束１４Ａ，１４Ｂ，１４Ｃ，１４Ｄが織物１３Ａ，１３Ｂ，１３Ｃ，１３Ｄ上に接着される。   Also in the other reinforcing fiber sheets 12A, 12B, 12C, 12D, the heating roller 31 is rolled on the fabrics 13A, 13B, 13C, 13D so that the reinforcing fiber bundles 14A, 14B, 14C, 14D are the fabrics 13A, 13B, 13C. , 13D.

このように形成された強化繊維シート１２Ｅは、空領域Ｑ及び方向転換部Ｈｏの周囲に対応する織物１３Ｅの部位を切断除去される。他の強化繊維シート１２Ａ，１２Ｂ，１２Ｃ，１２Ｄにおいても、織物１３Ａ，１３Ｂ，１３Ｃ，１３Ｄの一部が切断除去される。   The reinforcing fiber sheet 12E thus formed is cut and removed at portions of the fabric 13E corresponding to the surroundings of the empty region Q and the direction change portion Ho. In the other reinforcing fiber sheets 12A, 12B, 12C, and 12D, some of the fabrics 13A, 13B, 13C, and 13D are cut and removed.

織物１３Ａ，１３Ｂ，１３Ｃ，１３Ｄ，１３Ｅの一部が切断除去された強化繊維シート１２Ａ，１２Ｂ，１２Ｃ，１２Ｄ，１２Ｅは、図示しない型の内で積層される。この工程は、織物１３Ａ，１３Ｂ，１３Ｃ，１３Ｄ，１３Ｅに強化繊維束１４Ａ，１４Ｂ，１４Ｃ，１４Ｄ，１４Ｅが接着した強化繊維シート１２Ａ，１２Ｂ，１２Ｃ，１２Ｄ，１２Ｅを積層する積層工程である。   The reinforcing fiber sheets 12A, 12B, 12C, 12D, and 12E from which a part of the fabrics 13A, 13B, 13C, 13D, and 13E are cut and removed are stacked in a mold (not shown). This step is a laminating step of laminating the reinforcing fiber sheets 12A, 12B, 12C, 12D, and 12E in which the reinforcing fiber bundles 14A, 14B, 14C, 14D, and 14E are bonded to the fabrics 13A, 13B, 13C, 13D, and 13E.

前記型内にはマトリックス樹脂（前記した熱硬化性樹脂）が充填され、積層された積層体１１〔図１（ｂ）参照〕にマトリックス樹脂が含浸される。この工程は、方向転換部Ｈｏを有する強化繊維シート１２Ｅを１２Ａ，１２Ｂ，１２Ｃ，１２Ｄ，１２Ｅ積層にマトリックス樹脂を含浸させる含浸工程である。   The mold is filled with a matrix resin (the thermosetting resin described above), and the laminated body 11 (see FIG. 1B) is impregnated with the matrix resin. This step is an impregnation step of impregnating the 12A, 12B, 12C, 12D, and 12E laminates with the matrix resin with the reinforcing fiber sheet 12E having the direction changing portion Ho.

マトリックス樹脂が加熱によって硬化すると、図１（ａ）に示す繊維強化複合材１０が形成される。
次に、第１の実施形態の作用を説明する。 When the matrix resin is cured by heating, a fiber reinforced composite material 10 shown in FIG. 1A is formed.
Next, the operation of the first embodiment will be described.

図1（ａ）に示すように、孔１０１に挿通された部材３６から矢印Ｋの方向へ繊維強化複合材１０に荷重が掛かったとする。この場合、繊維強化複合材１０を構成する強化繊維シート１２Ｅの連続した配列部１４２が無いとすると、前記荷重の受け止め力は、強化繊維束と熱硬化性樹脂との接着強度に依存することになる。接着強度は、連続した配列部１４２による受け止め力より小さいため、配列部１４２のない強化繊維シートの積層数を増やす必要があるが、これは、繊維強化複合材の軽量化にとって好ましくない。連続した配列部１４２を有する強化繊維シート１２Ｅの存在は、強化繊維シートの積層数を減らして繊維強化複合材の軽量化に寄与する。   As shown in FIG. 1A, it is assumed that a load is applied to the fiber reinforced composite material 10 in the direction of arrow K from the member 36 inserted through the hole 101. In this case, assuming that there is no continuous array portion 142 of the reinforcing fiber sheet 12E constituting the fiber reinforced composite material 10, the load receiving force depends on the adhesive strength between the reinforcing fiber bundle and the thermosetting resin. Become. Since the adhesive strength is smaller than the receiving force by the continuous array portion 142, it is necessary to increase the number of laminated reinforcing fiber sheets without the array portion 142, which is not preferable for reducing the weight of the fiber-reinforced composite material. The presence of the reinforcing fiber sheet 12E having the continuous array portion 142 contributes to the weight reduction of the fiber-reinforced composite material by reducing the number of laminated reinforcing fiber sheets.

図1（ａ）に示すように、衝撃荷重Ｒが繊維強化複合材１０の厚み方向に掛かった場合、層間強化材（本実施形態では織物）が無い繊維強化複合材では、層間に生じるクラックが衝撃荷重Ｒの方向に向かうにつれて円錐状に拡がってゆくことが知られている。層間強化材が無い繊維強化複合材においてこのようなクラックの発生に対処するには、強化繊維束の層を増やす必要があるが、これは、繊維強化複合材の軽量化にとって好ましくない。   As shown in FIG. 1 (a), when the impact load R is applied in the thickness direction of the fiber reinforced composite material 10, in the fiber reinforced composite material without the interlayer reinforcing material (woven fabric in this embodiment), cracks generated between the layers are generated. It is known that it expands in a conical shape as it goes in the direction of the impact load R. In order to cope with the occurrence of such cracks in a fiber-reinforced composite material without an interlayer reinforcing material, it is necessary to increase the number of layers of reinforcing fiber bundles, which is not preferable for reducing the weight of the fiber-reinforced composite material.

層間強化材（本実施形態では織物１３Ａ，１３Ｂ，１３Ｃ，１３Ｄ，１３Ｅ）を有する繊維強化複合材１０では、層間強化材が層間でのクラックの伸展が層間強化材によって抑制される。層間強化材（本実施形態では織物１３Ａ，１３Ｂ，１３Ｃ，１３Ｄ，１３Ｅ）の存在は、強化繊維シートの積層数を減らして繊維強化複合材の軽量化に寄与する。   In the fiber reinforced composite material 10 having the interlayer reinforcing material (woven fabrics 13A, 13B, 13C, 13D, and 13E in the present embodiment), the interlayer reinforcing material suppresses the extension of cracks between the layers. The presence of the interlayer reinforcing material (in this embodiment, the fabrics 13A, 13B, 13C, 13D, and 13E) contributes to reducing the weight of the fiber-reinforced composite material by reducing the number of laminated reinforcing fiber sheets.

第１の実施形態では以下の効果が得られる。
（１）孔１０１の周囲の強化繊維シート１２Ｅの一部が方向転換部Ｈｏによって形成されているため、強化繊維シート１２Ｅの強化繊維束１４Ｅの切断箇所が方向転換部Ｈｏのない強化繊維シートに比べて少ない。連続した状態で方向転換する状態に配列された方向転換部Ｈｏの存在は、強化繊維束の切断箇所を少なくして強化繊維シート１２Ｅを強度的な品質に優れたものとする。 In the first embodiment, the following effects can be obtained.
(1) Since a part of the reinforcing fiber sheet 12E around the hole 101 is formed by the direction changing portion Ho, the cut portion of the reinforcing fiber bundle 14E of the reinforcing fiber sheet 12E becomes a reinforcing fiber sheet without the direction changing portion Ho. There are few compared. Presence of the direction change part Ho arranged in the state which changes direction in the continuous state reduces the cutting location of the reinforcing fiber bundle, and makes the reinforcing fiber sheet 12E excellent in strength quality.

（２）織物の織り目が孔になる織物１３Ａ，１３Ｂ，１３Ｃ，１３Ｄ，１３Ｅは、繊維強化複合材１０の層間を高靭性化して耐衝撃性を向上させる層間強化材として好適である。   (2) The fabrics 13A, 13B, 13C, 13D, and 13E in which the weave of the fabric is a hole are suitable as an interlayer reinforcing material that increases the toughness between layers of the fiber reinforced composite material 10 and improves the impact resistance.

（３）バインダ樹脂が織物１３Ａ，１３Ｂ，１３Ｃ，１３Ｄ，１３Ｅの織り目に浸透した状態で硬化される。そのため、樹脂に生じるクラックの拡大が織物１３Ａ，１３Ｂ，１３Ｃ，１３Ｄ，１３Ｅによって効果的に抑制される。つまり、織物１３Ａ，１３Ｂ，１３Ｃ，１３Ｄ，１３Ｅの織り目は、クラックの拡大の抑制の上で重要な樹脂の浸透の上で好ましい孔である。   (3) The binder resin is cured in a state where it penetrates into the weaves of the fabrics 13A, 13B, 13C, 13D, and 13E. Therefore, the expansion of cracks generated in the resin is effectively suppressed by the fabrics 13A, 13B, 13C, 13D, and 13E. That is, the weaves of the fabrics 13A, 13B, 13C, 13D, and 13E are preferable holes in terms of penetration of the resin, which is important for suppressing the expansion of cracks.

（４）平織物は、糸径が同じであれば織物のうちで厚みを最も小さくできる織物である。従って、平織物である織物１３Ａ，１３Ｂ，１３Ｃ，１３Ｄ，１３Ｅの採用は、強化繊維シート１２Ａ，１２Ｂ，１２Ｃ，１２Ｄ，１２Ｅの厚みを小さくして積層体１１の厚みを抑制する上で好ましい。   (4) A plain fabric is a fabric that can have the smallest thickness among the fabrics if the yarn diameter is the same. Therefore, the use of the fabrics 13A, 13B, 13C, 13D, and 13E, which are plain fabrics, is preferable for reducing the thickness of the laminate 11 by reducing the thickness of the reinforcing fiber sheets 12A, 12B, 12C, 12D, and 12E.

（５）織物１３Ａ，１３Ｂ，１３Ｃ，１３Ｄ，１３Ｅを構成する融着糸（経糸Ｔ及び緯糸Ｙ）は、加圧しながら加熱によって加熱強化繊維束を織物１３Ａ，１３Ｂ，１３Ｃ，１３Ｄ，１３Ｅに貼り付ける上で簡便な素材である。   (5) The fusion yarns (warp yarn T and weft yarn Y) constituting the woven fabrics 13A, 13B, 13C, 13D, and 13E are bonded to the woven fabrics 13A, 13B, 13C, 13D, and 13E by heating while applying pressure. It is a simple material to put on.

次に、図５の第２の実施形態を説明する。第１の実施形態と同じ構成部には同じ符合を用い、その詳細説明は省略する。
ヘッドフレーム２０には冷却ノズル３５が設けられている。冷却ノズル３５は、図示しない冷却装置に接続されている。冷却ノズル３５は、加熱ローラ３１に対してヘッドフレーム２０の移動方向の後方側に配置されている。冷却ノズル３５の冷風の噴射口３５１は、加熱ローラ３１と保持台１８との間を指向するように配設されている。 Next, a second embodiment of FIG. 5 will be described. The same reference numerals are used for the same components as those in the first embodiment, and detailed description thereof is omitted.
A cooling nozzle 35 is provided in the head frame 20. The cooling nozzle 35 is connected to a cooling device (not shown). The cooling nozzle 35 is disposed on the rear side in the moving direction of the head frame 20 with respect to the heating roller 31. The cold air injection port 351 of the cooling nozzle 35 is disposed so as to be directed between the heating roller 31 and the holding table 18.

加熱により溶融した被膜１６は、強化繊維束が加圧・加熱を受けた直後に、冷却ノズル３５から噴射される冷風により冷やされ、粘性が早期に下げられるため、被膜１６（熱融着材）の固化が速やかに進行する。そのため、強化繊維束の形状保持効果が早期に得られる。   Since the coating film 16 melted by heating is cooled by the cold air sprayed from the cooling nozzle 35 immediately after the reinforcing fiber bundle is pressurized and heated, and the viscosity is lowered early, the coating film 16 (thermal fusion material). Solidification proceeds quickly. Therefore, the shape retention effect of the reinforcing fiber bundle can be obtained early.

本発明では以下のような実施形態も可能である。
○熱融着材である粉末を付着させた多孔シートを用いてもよい。
○多孔シートとして多孔フィルムを用いてもよい。 In the present invention, the following embodiments are also possible.
A porous sheet to which powder, which is a heat sealing material, is attached may be used.
A porous film may be used as the porous sheet.

○方向転換部を有する強化繊維シートのみによって積層体を構成してもよい。
○強化繊維束が鋭角、直角あるいは鈍角に屈曲された方向転換部を形成してもよい。 -You may comprise a laminated body only with the reinforced fiber sheet which has a direction change part.
A direction changing portion in which the reinforcing fiber bundle is bent at an acute angle, a right angle or an obtuse angle may be formed.

１０…繊維強化複合材。１１…積層体。１２Ａ，１２Ｂ，１２Ｃ，１２Ｄ，１２Ｅ…強化繊維シート。１３Ａ，１３Ｂ，１３Ｃ，１３Ｄ，１３Ｅ…層間強化材からなる多孔シートとしての織物。１３１…一方の面である接着面。１４，１４Ａ，１４Ｂ，１４Ｃ，１４Ｄ，１４Ｅ…強化繊維束。１４１，１４３，１４４…直線配列部。１６…熱融着材としての被膜。３１…加熱ローラ。Ｔ…経糸。Ｙ…緯糸。Ｈｏ…方向転換部。   10: Fiber reinforced composite material. 11 ... Laminated body. 12A, 12B, 12C, 12D, 12E ... reinforcing fiber sheet. 13A, 13B, 13C, 13D, 13E ... Woven fabric as a porous sheet made of an interlayer reinforcing material. 131... Adhesive surface that is one surface. 14, 14A, 14B, 14C, 14D, 14E ... reinforcing fiber bundles. 141, 143, 144... Linear arrangement part. 16: A film as a heat sealing material. 31 ... Heating roller. T ... Warp. Y ... Weft. Ho ... Direction change part.

Claims (10)

層間強化材からなる多孔シートと、
前記多孔シートの少なくとも一方の面に付着された熱融着材と、
前記多孔シートの前記一方の面において前記熱融着材に接着された強化繊維束とを備え、
少なくとも一部の前記強化繊維束には、前記強化繊維束が屈曲又は湾曲された方向転換部が形成されている強化繊維シート。 A porous sheet made of an interlayer reinforcing material;
A heat sealing material attached to at least one surface of the porous sheet;
A reinforcing fiber bundle bonded to the heat sealing material on the one surface of the porous sheet,
A reinforcing fiber sheet in which at least a part of the reinforcing fiber bundle is formed with a direction changing portion in which the reinforcing fiber bundle is bent or curved. 前記多孔シートは、織物である請求項１に記載の強化繊維シート。   The reinforcing fiber sheet according to claim 1, wherein the porous sheet is a woven fabric. 前記織物は、平織物である請求項２に記載の強化繊維シート。   The reinforcing fiber sheet according to claim 2, wherein the woven fabric is a plain woven fabric. 前記織物の糸は、前記熱融着材によって被膜されている請求項２及び請求項３のいずれか１項に記載の強化繊維シート。   The reinforcing fiber sheet according to any one of claims 2 and 3, wherein the yarn of the woven fabric is coated with the heat-fusible material. 前記層間強化材は、熱可塑性樹脂である請求項１乃至請求項４のいずれか１項に記載の強化繊維シート。   The reinforcing fiber sheet according to any one of claims 1 to 4, wherein the interlayer reinforcing material is a thermoplastic resin. 少なくとも一部の前記強化繊維束には、直線配列部と方向転換部とが形成されている請求項１乃至請求項５のいずれか１項に記載の強化繊維シート。   The reinforcing fiber sheet according to any one of claims 1 to 5, wherein a linear array portion and a direction changing portion are formed in at least a part of the reinforcing fiber bundles. 少なくとも一部の前記強化繊維束には、半円弧状の方向転換部と該方向転換部の一対の端部のそれぞれから延在する直線配列部が形成されている請求項６に記載の強化繊維シート。   The reinforcing fiber according to claim 6, wherein at least a part of the reinforcing fiber bundle is formed with a semi-arc-shaped direction changing portion and a linear array portion extending from each of the pair of end portions of the direction changing portion. Sheet. 強化繊維シートの製造方法において、
少なくとも一方の面に熱融着材が付着した層間強化材からなる多孔シートを準備する準備工程と、
前記多孔シートの前記一方の面に、強化繊維束を加熱ローラによって加圧して接着させる加熱・加圧工程とを備え、
前記加熱・加圧工程は、前記加熱ローラを方向転換しながら前記強化繊維束を前記多孔シートの前記一方の面に接着させる方向転換工程を含み、
前記加熱ローラは、前記層間強化材の融点以下、且つ前記熱融着材の融点以上の温度に加熱される強化繊維シートの製造方法。 In the method for producing a reinforcing fiber sheet,
A preparatory step of preparing a porous sheet made of an interlayer reinforcing material having a heat sealing material attached to at least one surface;
A heating / pressurizing step for pressing and adhering a reinforcing fiber bundle with a heating roller on the one surface of the porous sheet,
The heating / pressurizing step includes a direction changing step of adhering the reinforcing fiber bundle to the one surface of the porous sheet while changing the direction of the heating roller,
The said heating roller is a manufacturing method of the reinforced fiber sheet heated to the temperature below the melting | fusing point of the said interlayer reinforcement, and above the melting | fusing point of the said heat-fusion material. 請求項１乃至請求項７のいずれか１項に記載の強化繊維シートを少なくとも含む複数の強化繊維シートを積層した積層体にマトリックス樹脂を含浸させてなる繊維強化複合材。   A fiber-reinforced composite material obtained by impregnating a matrix resin into a laminate obtained by laminating a plurality of reinforcing fiber sheets including at least the reinforcing fiber sheet according to any one of claims 1 to 7. 繊維強化複合材の製造方法において、
少なくとも一方の面に熱融着材が付着した層間強化材からなる多孔シートを準備する準備工程と、
前記多孔シートの前記一方の面に、強化繊維束を加熱ローラによって加圧して接着させる加熱・加圧工程と、
前記加熱・加圧工程において、前記加熱ローラを方向転換しながら前記強化繊維束を前記多孔シートの前記一方の面に接着させる方向転換工程と、
前記一方の面に前記強化繊維束が接着した強化繊維シートを積層する積層工程と、
前記強化繊維シートを少なくとも含む複数の強化繊維シートを積層した積層体にマトリックス樹脂を含浸させる含浸工程とを備える繊維強化複合材の製造方法。 In the method for producing a fiber reinforced composite material,
A preparatory step of preparing a porous sheet made of an interlayer reinforcing material having a heat sealing material attached to at least one surface;
A heating / pressurizing step for adhering the reinforcing fiber bundle by applying pressure to the one surface of the porous sheet with a heating roller;
In the heating / pressurizing step, a direction changing step of bonding the reinforcing fiber bundle to the one surface of the porous sheet while changing the direction of the heating roller;
A laminating step of laminating a reinforcing fiber sheet having the reinforcing fiber bundle bonded to the one surface;
An impregnation step of impregnating a matrix resin into a laminate in which a plurality of reinforcing fiber sheets including at least the reinforcing fiber sheet are laminated.
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