JPH0358904B2 - - Google Patents
Info
- Publication number
- JPH0358904B2 JPH0358904B2 JP1278510A JP27851089A JPH0358904B2 JP H0358904 B2 JPH0358904 B2 JP H0358904B2 JP 1278510 A JP1278510 A JP 1278510A JP 27851089 A JP27851089 A JP 27851089A JP H0358904 B2 JPH0358904 B2 JP H0358904B2
- Authority
- JP
- Japan
- Prior art keywords
- plate
- welding
- manufacturing
- welding material
- composite material
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000003466 welding Methods 0.000 claims description 41
- 239000000463 material Substances 0.000 claims description 26
- 238000004519 manufacturing process Methods 0.000 claims description 23
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 21
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 21
- 239000002131 composite material Substances 0.000 claims description 18
- 230000003014 reinforcing effect Effects 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 7
- -1 polytetrafluoroethylene Polymers 0.000 claims description 6
- 229920002430 Fibre-reinforced plastic Polymers 0.000 claims description 5
- 239000011151 fibre-reinforced plastic Substances 0.000 claims description 5
- 238000012360 testing method Methods 0.000 claims description 4
- 239000004020 conductor Substances 0.000 claims description 3
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 claims 1
- 239000005977 Ethylene Substances 0.000 claims 1
- 239000011248 coating agent Substances 0.000 claims 1
- 238000000576 coating method Methods 0.000 claims 1
- 229920001187 thermosetting polymer Polymers 0.000 description 9
- 239000000126 substance Substances 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 239000003365 glass fiber Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 229920006337 unsaturated polyester resin Polymers 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical group [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- XUCNUKMRBVNAPB-UHFFFAOYSA-N fluoroethene Chemical group FC=C XUCNUKMRBVNAPB-UHFFFAOYSA-N 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000002990 reinforced plastic Substances 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
Classifications
-
- 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
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
- B29C66/71—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined
Landscapes
- Laminated Bodies (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
Description
【発明の詳細な説明】
〔技術分野〕
本発明は、ポリテトラフルオロエチレン製の内
層と繊維強化プラスチツク製の補強外層とを含む
複合材料製物品の製造方法に関する。TECHNICAL FIELD The present invention relates to a method for manufacturing composite articles comprising an inner layer of polytetrafluoroethylene and a reinforced outer layer of fiber-reinforced plastic.
種々の化学プラントにおける各種構成物品は、
種々の化学物質に対する耐蝕性が要求されると共
に、物理的強度が要求される。かかる要求を満足
するために、近時においては、化学物質に対する
耐蝕性に優れたポリテトラフロオロエチレン（以
下「PTFE」と略称する場合がある）から形成し
た内層と高物理的強度を有する繊維強化プラスチ
ツク（以下「FRP」と略称する場合がある）、特
に熱硬化性FRPから形成した外層とを含む複合
材料から種々の構成物品を構成することが提案さ
れ、実用化され始めている。
Various constituent items in various chemical plants are:
Corrosion resistance against various chemical substances is required, as well as physical strength. In order to meet these demands, in recent years, fibers with an inner layer made of polytetrafluoroethylene (hereinafter sometimes abbreviated as "PTFE"), which has excellent corrosion resistance against chemical substances, and high physical strength have been developed. BACKGROUND OF THE INVENTION It has been proposed and put into practical use to construct various articles from composite materials including an outer layer formed from reinforced plastic (hereinafter sometimes abbreviated as "FRP"), particularly thermosetting FRP.
而して、化学プラント等に使用される種々の複
合材料製物品を製造するには、例えば射出成形に
よつて所要形状のPTFE製内層を成形し、次いで
かかる内層の片面に軟化溶融状態のFRPを施し
てこれを硬化せしめ、かくして上記内層の片面に
強化外層を積層せしめることが意図される。しか
しながら、かかる製造方法においては、物品の形
状又は寸法が異なる毎にPTFE製内層形成用の相
当高価な成形型を形成することが必要であり、同
一の物品を多数製造する場合以外においては、製
造コストが著しく高価になる。 In order to manufacture various composite material articles used in chemical plants, etc., a PTFE inner layer of a desired shape is formed by injection molding, and then FRP in a softened and molten state is coated on one side of the inner layer. It is contemplated that the reinforcing outer layer can be cured by subjecting the reinforcing layer to one side of the inner layer. However, in this manufacturing method, it is necessary to form a fairly expensive mold for forming the PTFE inner layer each time the shape or size of the article differs, and unless a large number of the same article is manufactured, the manufacturing method is The cost becomes significantly higher.
本発明は、上記事実に鑑みてなされたものであ
り、その主たる解決課題は、PTFE製内層とFRP
製外層を含む複合材料製物品を充分安価に製造す
ることを可能にする製造方法を提供することであ
る。
The present invention has been made in view of the above facts, and the main problem to be solved is that the inner layer made of PTFE and the FRP
It is an object of the present invention to provide a manufacturing method that makes it possible to manufacture an article made of a composite material including an outer layer at a sufficiently low cost.
本発明者は、鋭意研究と結果、相互に溶着せし
めることが不可能であるPTFE部材を溶接する適
切な方法が開発されている（例えば特公昭56−
36064号公報）ことに着目し、PTFE製の板状端
部の独特な突き合わせ溶接によつてPTFE製の内
層を形成し、かかる内層の片面にFRP製の外層
を形成することによつて、上記解決課題を達成す
ることができることを見出した。
As a result of extensive research, the present inventor has developed an appropriate method for welding PTFE members that cannot be welded together (for example,
36064), by forming an inner layer made of PTFE by unique butt welding of plate-shaped ends made of PTFE, and forming an outer layer made of FRP on one side of the inner layer, the above-mentioned problem was achieved. It has been found that the problem solved can be achieved.
即ち、本発明によれば、ポリテトラフルオロエ
チレン製の第１の板状端部とポリテトラフルオロ
エチレン製の第２の板状端部とを相互に突き合わ
せ、両者の片面側において両者に跨がつて軟化溶
融状態の繊維強化プラスチツクを施し且つ硬化せ
しめて仮付け層を形成し、かくして該第１の板状
端部と該第２の板状端部とを仮付けし、
次いで、該第１の板状端部と該第２の板状端部
との他面側において両者間に溶接状態の溶接材を
施し且つかかる溶接材を硬化せしめて溶接し、
しかる後に、該仮付け層を除去して、該第１の
板状端部と該第２の板状端部との該片面側におい
て両者間に溶融状態の溶接材を施し且つかかる溶
接材を硬化せしめて溶接し、かくしてポリテトラ
フルオロエチレン製の内層を形成し、
次いで、該内層の片面上に、軟化溶融状態の繊
維強化プラスチツクを施し且つ硬化せしめて補強
外層を形成する、
ことを特徴とする複合材料製物品の製造方法が提
供される。 That is, according to the present invention, a first plate-shaped end made of polytetrafluoroethylene and a second plate-shaped end made of polytetrafluoroethylene are butted against each other, and a straddle is formed between the two on one side. Then, the fiber-reinforced plastic in a softened and molten state is applied and hardened to form a tacking layer, thus tacking the first plate-like end and the second plate-like end; A welding material in a welded state is applied between the plate-like end portion and the second plate-like end portion on the other side thereof, and the welding material is hardened and welded, and after that, the tacking layer is removed. Then, a molten welding material is applied between the first plate-like end portion and the second plate-like end portion on one side thereof, and the welding material is hardened and welded, thereby forming polytetra A method for manufacturing an article made of a composite material, comprising: forming an inner layer made of fluoroethylene, and then applying fiber-reinforced plastic in a softened molten state on one side of the inner layer and hardening it to form a reinforced outer layer. provided.
本発明の製造方法によれば、市販のPTFE製部
材の板状端部を突き合わせ溶接することによつて
種々の寸法或いは形状の内層を形成することがで
きる。例えば、市販されている所定寸法のPTFE
製板状部材を２枚準備してかかる２枚の板状部材
を相互に突き合わせ溶接せしめると、市販されて
いる所定寸法の倍の大きさの板状部材を得ること
ができる。また、１枚の板状部材を円筒状にせし
めて両端部を突き合わせ溶接せしめると、円筒形
状の内層を得ることができる。かくして、種々の
形状の内層を充分安価に形成することができ、従
つて複合材料製物品を充分安価に製造することが
できる。板状端部の突き合わせ溶接は、仮付けを
含む独特な方式によつて遂行される故に、充分容
易に且つ精密に実施され得る。
According to the manufacturing method of the present invention, inner layers of various sizes and shapes can be formed by butt welding the plate-like ends of commercially available PTFE members. For example, commercially available PTFE with predetermined dimensions
By preparing two plate-shaped members and welding the two plate-shaped members against each other, it is possible to obtain a plate-shaped member twice the size of a commercially available predetermined size. Further, by forming one plate member into a cylindrical shape and butt welding both ends thereof, a cylindrical inner layer can be obtained. In this way, inner layers of various shapes can be formed at a sufficiently low cost, and thus composite articles can be manufactured at a sufficiently low cost. Butt welding of the plate ends can be carried out with sufficient ease and precision since it is carried out by a unique method involving tacking.
以下、添付図面を参照して、本発明の製造方法
の好適実施例について更に詳細ち説明する。
Hereinafter, preferred embodiments of the manufacturing method of the present invention will be described in further detail with reference to the accompanying drawings.
第１図には、本発明の製造方法によつて製造さ
れた複合材料製物品、即ち板状端部が突き合わせ
溶接されたPTFE製板状部材３０及び３２から形
成された内層とこの内層の片面（第１図において
下面）に配設された熱硬化性FRP製外層４２と
から成る全体としても板状である物品、が図示さ
れている。 FIG. 1 shows a composite material article manufactured by the manufacturing method of the present invention, that is, an inner layer formed from PTFE plate members 30 and 32 whose plate ends are butt welded, and one side of this inner layer. The article is illustrated as having a plate-like shape as a whole and comprising a thermosetting FRP outer layer 42 disposed on the bottom surface (in FIG. 1).
第１図に図示する物品を製造する本発明の製造
方法においては、最初に、PTFE製板状部材３０
の一端部（第１の板状端部）とPTFE製板状部材
３２の一端部（第２の板状端部）とが仮付けされ
る。かかる仮付けにおいては、第２−Ａ図に図示
する如く、板状部材３０の一端部と板状部材３２
の一端部とを相互に突き合わす。そして、両者の
片面側（第２−Ａ図において下面側）において両
者に跨がつて軟化溶融状態の熱硬化性FRPを施
し、かかるFRPを加熱して熱硬化せしめて仮付
け層３４を形成する。熱硬化性FRPの一例とし
ては、ガラス繊維層を含有する不飽和ポリエステ
ル樹脂を挙げることができる。 In the manufacturing method of the present invention for manufacturing the article shown in FIG.
One end (first plate-like end) and one end (second plate-like end) of the PTFE plate-like member 32 are temporarily attached. In such temporary attachment, as shown in FIG. 2-A, one end of the plate member 30 and the plate member 32 are
and one end of each other. Then, thermosetting FRP in a softened and molten state is applied across both sides on one side (lower side in FIG. 2-A), and the temporary bonding layer 34 is formed by heating and thermosetting the FRP. . An example of thermosetting FRP is an unsaturated polyester resin containing a glass fiber layer.
次いで、板状部材３０の一端部と板状端部３２
の一端部とが他面側（第２−Ａ図及び第２−Ｂ図
において上面側）において溶接される。かかる溶
接においては、上記他面側にて板状部材３０の一
端部と板状部材３２の一端部との間に軟化溶融状
態の溶接材３６が施され冷却硬化せしめられる。
第２−Ｂ図に図示する如く、板状部材３０の一端
部と板状部材３２の一端部との境界領域に断面形
状が三角形等でよい凹部を形成し、かかる凹部に
溶接状態の溶接材３６を施して硬化せしめるのが
好ましい。溶接材３６としては、上記特公昭56−
36064号公報に開示されているパーフルオロアル
コキシフルオロカーボンを好都合に使用すること
ができる。 Next, one end of the plate member 30 and the plate end 32
One end portion of is welded to the other surface side (upper surface side in FIGS. 2-A and 2-B). In such welding, a softened and molten welding material 36 is applied between one end of the plate member 30 and one end of the plate member 32 on the other surface side, and is cooled and hardened.
As shown in FIG. 2-B, a recess with a triangular cross-sectional shape is formed in the boundary area between one end of the plate member 30 and one end of the plate member 32, and the welding material in the welded state is placed in the recess. It is preferable to apply 36 to harden it. As the welding material 36,
The perfluoroalkoxyfluorocarbons disclosed in Publication No. 36064 can be advantageously used.
上記溶接に続いて、板状部材３０の一端部と板
状部材３２の一端部との上記片面側に施されてい
る上記仮付け層３４を除去する。かかる除去は、
例えば適宜の切削工具で仮付け層３４を削り取る
ことによつて遂行される。しかる後に、この片面
側において、板状部材３０の一端部と板状部材３
２の一端部との間に軟化溶融状態の溶接材３８を
施し軟化せしめて両者を溶接する。かかる溶接に
おいても、第２−Ｃ図に図示する如く、板状部材
３０の一端部と板状部材３２の一端部との境界領
域に断面形状が三角形等でよい凹部を形成し、か
かる凹部に溶融状態の溶接材３８を施して硬化せ
しめるのが好ましい。かようにして板状部材３０
の一端部と板状部材３２の一端部とが相互に突き
合わせ溶接せしめられ、PTFE製内層が形成され
る。 Following the welding, the temporary bonding layer 34 applied to one side of the one end of the plate member 30 and the one end of the plate member 32 is removed. Such removal is
This is accomplished, for example, by scraping off the tack layer 34 with a suitable cutting tool. After that, on this one side, one end of the plate-like member 30 and the plate-like member 3
A welding material 38 in a softened and molten state is applied between one end of the two and the two are softened and welded together. In such welding, as shown in FIG. 2-C, a recess with a triangular cross-sectional shape or the like is formed in the boundary area between one end of the plate-like member 30 and one end of the plate-like member 32, and a recess is formed in the recess. Preferably, the welding material 38 is applied in a molten state and allowed to harden. In this way, the plate member 30
One end and one end of the plate member 32 are butt welded together to form a PTFE inner layer.
上記の通りにして形状したPTFE製内層につい
て、通電検査を遂行することができる。この場合
には、第２−Ｄ図に図示する通り、上記片面側に
おいて板状部材３０の一端部と板状部材３２の一
端部との間に施された溶接材３８を、アルミ箔、
カーボン含有合成樹脂等でよい導電性材料４０で
被覆する。そして、周知の形態でよい通電試験装
置（図示していない）を使用して、溶接材３６と
溶接材３８との間で通電試験を遂行する。板状部
材３０の一端部と板状部材３２の一端部とが充分
良好に溶接されている場合には、溶接材３６と溶
接材３８とが通電することはないが、ピンホール
等が存在する場合には、溶接材３６と溶接材３８
との間で通電してしまう。 An electrical current test can be performed on the PTFE inner layer shaped as described above. In this case, as shown in FIG. 2-D, the welding material 38 applied between one end of the plate-like member 30 and one end of the plate-like member 32 on one side is replaced with aluminum foil,
It is coated with a conductive material 40 which may be carbon-containing synthetic resin or the like. Then, a current test is performed between the welding material 36 and the welding material 38 using a current testing device (not shown) which may be of a known type. If one end of the plate-shaped member 30 and one end of the plate-shaped member 32 are sufficiently well welded, there will be no electricity between the welding material 36 and the welding material 38, but there will be pinholes etc. In this case, welding material 36 and welding material 38
Power is passed between the
しかる後に、PNFE製内層の片面（第１図にお
いて下面）上に、軟化溶融状態の熱硬化性FRP
を施し、これを加熱して熱硬化せしめて補強外層
４２を形成する。かくして、第１図に図示する通
りの形態の複合材料製物品が製造される。補強外
層４２を構成する熱硬化性FRPは、ガラス繊維
層を含有する不飽和ポリエステル樹脂でよい。
PTFE製内層の上記片面上に補強外層４２を形成
することに代えて、所望ならばPTFE製内層の他
面（第１図において上面）上に補強外層４２を形
成することもできる。 After that, thermosetting FRP in a softened and molten state is placed on one side (lower side in Figure 1) of the PNFE inner layer.
The reinforcing outer layer 42 is formed by heating and thermosetting this. Thus, a composite material article having the form shown in FIG. 1 is manufactured. The thermosetting FRP constituting the reinforcing outer layer 42 may be an unsaturated polyester resin containing a glass fiber layer.
Instead of forming the reinforcing outer layer 42 on one side of the inner PTFE layer, the outer reinforcing layer 42 can be formed on the other side (top side in FIG. 1) of the inner PTFE layer, if desired.
第３図には、本発明に従う製造方法によつて製
造された複合材料製物品の他の形態が図示されて
いる。かかる物品においては、１枚のRTFE製板
状部材４４が円筒状にせしめられて、その一端部
（第１の板状端部）とその他端部（第２の板状端
部）とが相互に突き合わせ溶接せしめられ、かく
して円筒状内層が形成されている。板状部材４４
の両端部の突き合わせ溶接は上述した様式と同一
の様式で遂行することができる。円筒状内層の片
面、即ち外周面上には熱硬化性FRP製補強外層
４６が形成されている。かかる補強外層４６も上
述した様式と同一の様式で形成することができ
る。 FIG. 3 illustrates another form of a composite material article manufactured by the manufacturing method according to the present invention. In such an article, one RTFE plate-like member 44 is made into a cylindrical shape, and one end (first plate-like end) and the other end (second plate-like end) are mutually connected. are butt welded together, thus forming a cylindrical inner layer. Plate member 44
Butt welding of the ends of can be accomplished in the same manner as described above. A reinforcing outer layer 46 made of thermosetting FRP is formed on one side of the cylindrical inner layer, that is, on the outer peripheral surface. Such a reinforcing outer layer 46 may also be formed in the same manner as described above.
第１図は、本発明の製造方法によつて製造され
た複合材料製物品の一例を示す断面図。第２−Ａ
図、第２−Ｂ図、第２−Ｃ図及び第２−Ｄ図は、
第１図に示す複合材料製物品を製造する本発明の
製造方法の好適実施例を説明するための断面図。
第３図は、本発明の製造方法によつて製造された
複合材料製物品の他の例を示す斜面図。
３０……板状部材、３２……板状部材、３４…
…仮付け層、３６……溶接材、３８……溶接材、
４０……導電製材料、４２……補強外層。
FIG. 1 is a sectional view showing an example of a composite material article manufactured by the manufacturing method of the present invention. 2nd-A
Figures 2-B, 2-C and 2-D are
2 is a sectional view for explaining a preferred embodiment of the manufacturing method of the present invention for manufacturing the composite material article shown in FIG. 1. FIG.
FIG. 3 is a perspective view showing another example of a composite material article manufactured by the manufacturing method of the present invention. 30... plate-shaped member, 32... plate-shaped member, 34...
...Temporary layer, 36...Welding material, 38...Welding material,
40...Conductive material, 42...Reinforcing outer layer.
Claims (1)
端部とポリテトラフルオロエチレン製の第２の板
状端部とを相互に突き合わせ、両者の片面側にお
いて両者に跨がつて軟化溶融状態の繊維強化プラ
スチツクを施し且つ硬化せしめて仮付け層を形成
し、かくして該第１の板状端部と該第２の板状端
部とを仮付けし、 次いで、該第１の板状端部と該第２の板状端部
との他面側において両者間に溶融状態の溶接材を
施し且つかかる溶接材を硬化せしめて溶接し、 しかる後に、該仮付け層を除去して、該第１の
板状端部と該第２の板状端部との該片面側におい
て両者間に溶融状態の溶接材を施し且つかかる溶
接材を硬化せしめて溶接し、かくしてポリテトラ
フルオロエチレン製の内層を形成し、 次いで、該内層の片面上に、軟化溶融状態の繊
維強化プラスチツクを施し且つ硬化せしめて補強
外層を形成する、 ことを特徴とする複合材料製物品の製造方法。 ２ 該第１の板状端部と該第２の板状端部との該
他面側における溶接の際には、該第１の板状端部
と該第２の板状端部との境界領域に凹部を形成し
て、かかる凹部に溶接状態の溶接材を施す、特許
請求の範囲第１項記載の複合材料製物品の製造方
法。 ３ 該第１の板状端部と該第２の板状端部との該
片面側における溶接の際には、該第１の板状端部
と該第２の板状端部との境界領域に凹部を形成し
て、かかる凹部に溶融状態の溶接材を施す、特許
請求の範囲第１項又は第２項記載の複合材料製物
品の製造方法。 ４ 該溶接材はパーフルオロアルコキシフルオロ
カーボンである、特許請求の範囲第１項から第３
項までのいずれかに記載の複合材料製物品の製造
方法。 ５ 該第１の板状端部と該第２の板状端部との該
他面側及び該片面側の溶接が終了した後に、該片
面側或いは該他面側の溶接材を導電性材料で被覆
して、溶接領域の通電検査を遂行する、特許請求
の範囲第１項から第４項までのいずれかに記載の
複合材料製物品の製造方法。 ６ 該第１の板状端部と該第２の板状端部とは同
一の板状部材の両端部であり、該板状部材を円筒
状にせしめて該第１の板状端部と該第２の板状端
部とが相互に突き合わせられる、特許請求の範囲
第１項から第５項までのいずれかに記載の複合材
料製物品の製造方法。[Scope of Claims] 1. A first plate-like end made of polytetrafluoroethylene and a second plate-like end made of polytetrafluoroethylene are butted against each other and straddled on one side of both. A fiber-reinforced plastic in a softened and molten state is applied and hardened to form a tacking layer, thus tacking the first plate-like end and the second plate-like end; A molten welding material is applied between the plate-like end and the second plate-like end on the other side thereof, and the welding material is hardened and welded, and then the tacking layer is removed. Then, a molten welding material is applied between the first plate-like end portion and the second plate-like end portion on one side thereof, and the welding material is hardened and welded, and thus polytetrafluorocarbon A method for manufacturing an article made of a composite material, comprising: forming an inner layer made of ethylene, and then applying fiber-reinforced plastic in a softened molten state on one side of the inner layer and hardening it to form a reinforcing outer layer. 2. When welding the first plate-like end and the second plate-like end on the other surface side, the first plate-like end and the second plate-like end are welded. 2. The method of manufacturing a composite material article according to claim 1, wherein a recess is formed in the boundary area and a welding material in a welded state is applied to the recess. 3. When welding the first plate-like end and the second plate-like end on the one side, the boundary between the first plate-like end and the second plate-like end 3. The method of manufacturing a composite material article according to claim 1 or 2, wherein a recess is formed in the region and a molten welding material is applied to the recess. 4 Claims 1 to 3, wherein the welding material is perfluoroalkoxyfluorocarbon.
A method for producing a composite material article according to any of the preceding paragraphs. 5 After the welding of the other side and the one side of the first plate-like end and the second plate-like end is completed, the welding material on the one side or the other side is made of a conductive material. 5. A method for manufacturing a composite material article according to any one of claims 1 to 4, comprising coating the article with a welding area and carrying out an electrical conduction test of the welding area. 6. The first plate-like end and the second plate-like end are both ends of the same plate-like member, and the plate-like member is formed into a cylindrical shape to form the first plate-like end and the second plate-like end. The method for manufacturing a composite material article according to any one of claims 1 to 5, wherein the second plate-like end portions are butted against each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1278510A JPH02167728A (en) | 1989-10-27 | 1989-10-27 | Preparation of article made of composite material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1278510A JPH02167728A (en) | 1989-10-27 | 1989-10-27 | Preparation of article made of composite material |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59196857A Division JPS6174830A (en) | 1984-09-21 | 1984-09-21 | Manufacture of molded material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02167728A JPH02167728A (en) | 1990-06-28 |
| JPH0358904B2 true JPH0358904B2 (en) | 1991-09-06 |
Family
ID=17598309
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1278510A Granted JPH02167728A (en) | 1989-10-27 | 1989-10-27 | Preparation of article made of composite material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02167728A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2468532B1 (en) * | 2009-08-20 | 2018-05-09 | Bridgestone Corporation | Tire and tire manufacturing method |
-
1989
- 1989-10-27 JP JP1278510A patent/JPH02167728A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPH02167728A (en) | 1990-06-28 |
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