JPH02160531A - Manufacture of article made of composite material having bent part - Google Patents
Manufacture of article made of composite material having bent partInfo
- Publication number
- JPH02160531A JPH02160531A JP27851189A JP27851189A JPH02160531A JP H02160531 A JPH02160531 A JP H02160531A JP 27851189 A JP27851189 A JP 27851189A JP 27851189 A JP27851189 A JP 27851189A JP H02160531 A JPH02160531 A JP H02160531A
- Authority
- JP
- Japan
- Prior art keywords
- coating layer
- softened
- molten state
- reinforcement coating
- frp
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 21
- 239000002131 composite material Substances 0.000 title claims abstract description 8
- 239000011247 coating layer Substances 0.000 claims abstract description 43
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims abstract description 18
- 239000004810 polytetrafluoroethylene Substances 0.000 claims abstract description 18
- 229920002430 Fibre-reinforced plastic Polymers 0.000 claims abstract description 8
- 239000011151 fibre-reinforced plastic Substances 0.000 claims abstract description 8
- -1 polytetrafluoroethylene Polymers 0.000 claims abstract description 5
- 238000000034 method Methods 0.000 claims abstract description 4
- 230000003014 reinforcing effect Effects 0.000 claims description 34
- 238000005452 bending Methods 0.000 claims description 10
- 229920001187 thermosetting polymer Polymers 0.000 abstract description 12
- 230000002787 reinforcement Effects 0.000 abstract 8
- 238000010438 heat treatment Methods 0.000 abstract 3
- 239000010410 layer Substances 0.000 description 6
- 239000000126 substance Substances 0.000 description 4
- 239000000470 constituent Substances 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- 229920006337 unsaturated polyester resin Polymers 0.000 description 1
- 238000003466 welding Methods 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
- B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
- B29C53/02—Bending or folding
- B29C53/04—Bending or folding of plates or sheets
- B29C53/06—Forming folding lines by pressing or scoring
-
- 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
- B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
- B29C53/02—Bending or folding
- B29C53/04—Bending or folding of plates or sheets
-
- 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
- B29C2793/00—Shaping techniques involving a cutting or machining operation
-
- 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
- B29C37/00—Component parts, details, accessories or auxiliary operations, not covered by group B29C33/00 or B29C35/00
- B29C37/0053—Moulding articles characterised by the shape of the surface, e.g. ribs, high polish
- B29C37/0057—Moulding single grooves or ribs, e.g. tear lines
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2027/00—Use of polyvinylhalogenides or derivatives thereof as moulding material
- B29K2027/12—Use of polyvinylhalogenides or derivatives thereof as moulding material containing fluorine
- B29K2027/18—PTFE, i.e. polytetrafluorethene, e.g. ePTFE, i.e. expanded polytetrafluorethene
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
- B29K2105/06—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts
-
- 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
- B29L2009/00—Layered products
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Laminated Bodies (AREA)
- Shaping Of Tube Ends By Bending Or Straightening (AREA)
Abstract
Description
【発明の詳細な説明】
〔技術分野〕
本発明は、複合材料製物品の製造方法、更に詳しくは繊
維強化プラスチツク製補強被覆層が施されたポリテトラ
フルオロエチレン製部材から成り且つ折り曲げ部を有す
る物品の製造方法に関する。Detailed Description of the Invention [Technical Field] The present invention relates to a method for manufacturing an article made of a composite material, and more specifically, an article comprising a polytetrafluoroethylene member provided with a reinforcing coating layer made of fiber-reinforced plastic and having a bent portion. It relates to a method of manufacturing an article.
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
ルオロエチレン（以下ｒＰＴＦＥ」と略称する場合があ
る）製部材の片面即ち外面に、高物理的強度を有する繊
維強化プラスチック（以下ｒＦＲＰＪと略称する場合が
ある）製の補強被覆層を施すことが提案され、実用化さ
れ始めている。Various constituent articles in various chemical plants are required to have corrosion resistance against various chemical substances as well as physical strength. In order to satisfy such demands, in recent years, members made of polytetrafluoroethylene (hereinafter sometimes abbreviated as "rPTFE"), which has excellent corrosion resistance against chemical substances, have high physical strength on one side, that is, the outer surface. Providing a reinforcing coating layer made of fiber reinforced plastic (hereinafter sometimes abbreviated as rFRPJ) has been proposed and is beginning to be put into practical use.
而して、化学プラント等に使用される構成物品には、折
り曲げ部を有する形態（例えば、溝形状物品或いは多角
筒形状物品等）のものが少なくない。かような形状の物
品を製造する場合、ＰＴＦＥ製板状部材を所要通りに充
分良好に折り曲げることは一般に相当困難である故に、
折り曲げ部を有する所要形状のＰＴＦＥ製部材を直接的
に射出成形等によって成形し、次いでかかるＰＴＦＥ製
部材の外面に軟化溶融状態のＦＲＰを施し且つ硬化せし
めて補強被覆層を形成していた。然るに、かような製造
方法においては、物品の形状又は寸法が異なる毎にＰＴ
ＦＥ製部材成形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。Many of the constituent articles used in chemical plants and the like have bent portions (for example, groove-shaped articles or polygonal cylindrical articles). When manufacturing articles with such shapes, it is generally quite difficult to bend the PTFE plate-like member well enough as required.
A PTFE member having a desired shape having a bent portion is directly molded by injection molding or the like, and then FRP in a softened and molten state is applied to the outer surface of the PTFE member and hardened to form a reinforcing coating layer. However, in such a manufacturing method, the PT
It is necessary to form fairly expensive molds for molding FE parts, and unless a large number of identical articles are manufactured, manufacturing costs become extremely high.
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製板状部材を充分容易に所
要通りに折り曲げることを可能にし、従ってＦＲＰＩＩ
補強被覆層を有するＰＴＦＥ製部材から成り且つ折り曲
げ部を有する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 its main problem is to enable a PTFE plate-like member to be bent easily enough as required, and therefore to
It is an object of the present invention to provide a manufacturing method that makes it possible to manufacture an article made of a PTFE member having a reinforcing coating layer and having a bent portion at a sufficiently low cost.
本発明者は、鋭意研究の結果、所定折り曲げ部に沿った
除去領域においてＦＲＰ１％補強被覆層をＰＴＦＥ！Ｉ
板状部材から除去することを含む独特な製造方法によれ
ば、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 intensive research, the inventor of the present invention replaced the 1% FRP reinforcing coating layer with PTFE in the removal area along the predetermined bending portion. I
It has been found that the above problem can be achieved by a unique manufacturing method that includes removal from a plate-like member.
即ち、本発明によれば、ポリテトラフルオロエチレン製
板状部材の片面上に、軟化溶融状態の繊維強化プラスチ
ックを施し且つ硬化せしめて補強被覆層を形成し、
次いで、所定折り曲げ部に沿った除去領域において該補
強被覆層を除去し、
しかる後に、該所定折り曲げ部にて該板状部材を折り曲
げ、
次いで、該板状部材の該片面上の該除去領域に、再び軟
化溶融状態の繊維強化プラスチックを施し且つ硬化せし
めて補強被覆層を再形成する、ことを特徴とする折り曲
げ部を有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 fiber-reinforced plastic in a softened and molten state is applied to one side of a polytetrafluoroethylene plate-like member and hardened to form a reinforcing coating layer, and then removed along a predetermined bent portion. removing the reinforcing coating layer in the region, then bending the plate-like member at the predetermined bending portion, and then applying the fiber-reinforced plastic in a softened and molten state again to the removed region on the one side of the plate-like member. A method of manufacturing a composite article having a folded portion is provided, the method comprising applying and curing the reinforcing coating layer to re-form the reinforcing coating layer.
本発明の製造方法においては、ＰＴＦＥ製板状部材の片
面に形成されたＦＲＰ製補強被覆層が、所定折り曲げ部
に沿って除去され、かくして所定折り曲げ部の強度が局
部的に低減せしめられる。In the manufacturing method of the present invention, the FRP reinforcing coating layer formed on one side of the PTFE plate-like member is removed along the predetermined bent portions, thereby locally reducing the strength of the predetermined bent portions.
しかる後に、強度が局部的に低減せしめられた折り曲げ
部において折り曲げが遂行される故に充分容易に所要通
りに折り曲げが達成される。強度が局部的に低減せしめ
られた折り曲げ部には、折り曲げが遂行された後に再び
ＦＲＰ製補強被覆層が形成され、かくして所要強度が復
元される。Thereafter, the desired bending is achieved with sufficient ease, since the bending is carried out in the bending section where the strength is locally reduced. After the bending is completed, the FRP reinforcing coating layer is formed again on the bent portion where the strength has been locally reduced, thereby restoring the required strength.
第１図には、本発明の製造方法によって製造された複合
、材料製物品が図示されている。かかる物品は両側に位
置する２個の折り曲げ部を有し、断面が略Ｕ字状である
溝形状である。FIG. 1 illustrates a composite, material article manufactured by the manufacturing method of the present invention. Such an article has a groove shape with two folds located on both sides and a substantially U-shaped cross section.
第１図に図示する溝形状物品を製造する本発明の製造方
法においては、第２−Ａ図に示す如（、ＰＴＦＥ製板状
部材５０の片面（第２−Ａ図において下面）上に、軟化
溶融状態の熱硬化部ＦＲＰを施し、かかるＦＲＰを加熱
して熱硬化せしめて補強被覆層５２が形成される。ＰＴ
ＦＥ製板状部材５０は市販されているものを利用するこ
とができる。熱硬化性ＦＲＰ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例示することができ
る。In the manufacturing method of the present invention for manufacturing the groove-shaped article shown in FIG. 1, as shown in FIG. 2-A, A thermoset FRP in a softened and molten state is applied, and the FRP is heated and thermoset to form the reinforcing coating layer 52.PT
A commercially available FE plate member 50 can be used. As the thermosetting FRP, an unsaturated polyester resin containing a glass fiber layer can be exemplified.
次いで、第２−Ｂ図に明確に図示する通り、２個の折り
曲げ部に沿った除去領域において、上記補強被覆層５２
が局部的に除去される。補強被覆層５２のかかる除去は
、切削工具（図示していない）で削り取ることによって
好都合に遂行することができる。The reinforcing coating layer 52 is then removed in the removed area along the two folds, as clearly illustrated in Figure 2-B.
is removed locally. Such removal of reinforcing coating layer 52 may be conveniently accomplished by scraping with a cutting tool (not shown).
しかる後に、第２−Ｃ図に図示する如く、補強被覆層５
２が除去された折り曲げ部にてＰＴＦＥ製板状部材５０
を所要通りに折り曲げる。折り曲げ部以外においては補
強被覆層５２が存在し、従って比較的高強度であるが、
折り曲げ部には補強被覆層５２が存在せず、従って比較
的低強度である故に、折り曲げは充分容易に所要通りに
遂行することができる。After that, as shown in FIG. 2-C, the reinforcing coating layer 5 is applied.
PTFE plate-shaped member 50 at the bent part where 2 was removed.
Fold as required. There is a reinforcing coating layer 52 in areas other than the bent portions, so the strength is relatively high, but
Since there is no reinforcing coating layer 52 in the fold and thus a relatively low strength, the fold can be carried out with sufficient ease as desired.
次いで、第２−Ｃ図に示す通り、補強被覆層５２が除去
された除去領域に、再び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、かくし
て補強被覆層５４を再形成する。かかる補強被覆層５４
によって折り曲げ部が再び補強される。Next, as shown in FIG. 2-C, thermosetting FRP in a softened and molten state is again applied to the removed area where the reinforcing coating layer 52 has been removed.
The FRP is heated and thermosetted, thus re-forming the reinforcing coating layer 54. Such reinforcing coating layer 54
The folded part is reinforced again.
図示の実施例においては、補強被覆層５４の形成に引き
続いて更に、補強被覆層５２及び５４上に、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、かくして付加補強被覆層５６（第１図）を
形成する。In the illustrated embodiment, subsequent to the formation of the reinforcing coating layer 54, thermosetting FRP in a softened and molten state is further applied on the reinforcing coating layers 52 and 54, and the FRP is heated to thermoset, thus adding A reinforcing coating layer 56 (FIG. 1) is formed.
本発明の製造方法は、第３図に図示する４角筒形状の物
品を形成する場合にも好都合に適用される。この場合に
も、上述した様式と同様にして、ＰＴＦＥ製板状部材５
８の片面上にＦＲＰ製補強被覆層６０を形成し、次いで
３個の折り曲げ部に沿ってＦＲＰ製補強被覆層６０を除
去して折り曲げを遂行し、しかる後に１個の角部にて相
互に隣接して位置する両端部を相互に溶接する。かかる
溶接は、本出願の所謂親出願の公開公報である特開昭６
１−７４８３０号公報に開示されている様式によって好
都合に遂行することができる。次いで、ＦＲＰ製補強被
覆層６０が除去された領域にてＦＲＰ製補強被覆層６２
を再形成し、しかる後に補強被覆層６０及び６２上にＦ
ＲＰ製付加補強被覆層６４を形成する。The manufacturing method of the present invention can also be advantageously applied to the case of forming a rectangular tube-shaped article as shown in FIG. In this case as well, the PTFE plate member 5 is
A reinforcing covering layer 60 made of FRP is formed on one side of the sheet 8, and then the reinforcing covering layer 60 made of FRP is removed along the three bent portions to perform the bending, and then the reinforcing covering layer 60 is formed on one side of the sheet 8. Adjacently located ends are welded together. Such welding is described in Japanese Unexamined Patent Application Publication No. 1983-1993, which is the so-called parent application publication of the present application.
This can be conveniently accomplished in the manner disclosed in Publication No. 1-74830. Next, the FRP reinforcing covering layer 62 is removed in the area where the FRP reinforcing covering layer 60 has been removed.
and then F on the reinforcing coating layers 60 and 62.
An additional reinforcing coating layer 64 made of RP is formed.
第１図は、本発明の製造方法によって製造された、折り
曲げ部を有する複合材料製物品の一例を示す断面図。
第２−Ａ図、第２−Ｂ図及び第２−Ｃ図は、第１図に示
す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って製造された、折り
曲げ部を有する複合材料製物品の他の例を示す斜面図。
５０・・・・・ＰＴＦＥ製板状部材
５２ ・ ・ ・ ・ ・
５４ ・ ・ ・ ・ ・
５６ ・ ・ ・ ・ ・
５８ ・ ・ ・ ・ ・
６０ ・ ・ ・ ・ ・
６２ ・ ・ ・ ・ ・
６４ ・ ・ ・ ・ ・
ＦＲＰ製補強被覆層
ＦＲＰ製補強被覆層
ＦＲＰ製付加補強被覆層
ＰＴＦＥ製板状部材
ＦＲＰ製補強被覆層
ＦＲＰ製補強被覆層
ＦＲＰ製付加補強被覆層FIG. 1 is a cross-sectional view showing an example of a composite material article having a bent portion, manufactured by the manufacturing method of the present invention. 2-A, 2-B, and 2-C are sectional views for explaining a preferred embodiment of the manufacturing method of the present invention for manufacturing the article shown in FIG. 1. FIG. 3 is a perspective view showing another example of a composite material article having a folded portion manufactured by the manufacturing method of the present invention. 50...PTFE plate member 52 ・ ・ ・ ・ ・ 54 ・ ・ ・ ・ ・ 56 ・ ・ ・ ・ 58 ・ ・ ・ ・ 60 ・ ・ ・ ・ 62 ・ ・ ・ ・ ・ 64 ・ ・・ ・ ・ FRP reinforced coating layer FRP reinforced coating layer FRP additional reinforced coating layer PTFE plate-like member FRP reinforced coating layer FRP reinforced coating layer FRP additional reinforced coating layer
Claims (1)
、軟化溶融状態の繊維強化プラスチックを施し且つ硬化
せしめて補強被覆層を形成し、次いで、所定折り曲げ部
に沿った除去領域において該補強被覆層を除去し、 しかる後に、該所定折り曲げ部にて該板状部材を折り曲
げ、 次いで、該板状部材の該片面上の該除去領域に、再び軟
化溶融状態の繊維強化プラスチックを施し且つ硬化せし
めて補強被覆層を再形成する、 ことを特徴とする折り曲げ部を有する複合材料製物品の
製造方法。[Claims] 1. Applying fiber reinforced plastic in a softened and molten state to one side of a polytetrafluoroethylene plate member and hardening it to form a reinforcing coating layer, and then removing it along a predetermined bent part. removing the reinforcing coating layer in the region, then bending the plate-like member at the predetermined bending portion, and then applying the fiber-reinforced plastic in a softened and molten state again to the removed region on the one side of the plate-like member. A method for manufacturing an article made of a composite material having a folded portion, characterized in that the reinforcing coating layer is re-formed by applying and curing the reinforcing coating layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27851189A JPH02160531A (en) | 1989-10-27 | 1989-10-27 | Manufacture of article made of composite material having bent part |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27851189A JPH02160531A (en) | 1989-10-27 | 1989-10-27 | Manufacture of article made of composite material having bent part |
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 (1)
| Publication Number | Publication Date |
|---|---|
| JPH02160531A true JPH02160531A (en) | 1990-06-20 |
Family
ID=17598320
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP27851189A Pending JPH02160531A (en) | 1989-10-27 | 1989-10-27 | Manufacture of article made of composite material having bent part |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02160531A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS50119871A (en) * | 1974-03-08 | 1975-09-19 | ||
| JPS5621818A (en) * | 1979-07-31 | 1981-02-28 | Nippon Gakki Seizo Kk | Molding method for counter made of plastic resin |
-
1989
- 1989-10-27 JP JP27851189A patent/JPH02160531A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS50119871A (en) * | 1974-03-08 | 1975-09-19 | ||
| JPS5621818A (en) * | 1979-07-31 | 1981-02-28 | Nippon Gakki Seizo Kk | Molding method for counter made of plastic resin |
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