JPS5921293B2 - Pressure tape for FRP molding - Google Patents
Pressure tape for FRP moldingInfo
- Publication number
- JPS5921293B2 JPS5921293B2 JP53009519A JP951978A JPS5921293B2 JP S5921293 B2 JPS5921293 B2 JP S5921293B2 JP 53009519 A JP53009519 A JP 53009519A JP 951978 A JP951978 A JP 951978A JP S5921293 B2 JPS5921293 B2 JP S5921293B2
- Authority
- JP
- Japan
- Prior art keywords
- tape
- adhesive
- resin
- presser
- 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.)
- Expired
Links
Landscapes
- Moulding By Coating Moulds (AREA)
Description
【発明の詳細な説明】
本発明はFRP成形用押え巻テープに関するものである
。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a presser tape for FRP molding.
FRP製品を製造する場合、未硬化乃至は半硬化の熱硬
化性樹脂を含浸したガラス繊維基材の捲回体上に押えテ
ープを巻き、この状態で樹脂を加熱硬化し、而るのちに
、押えテニ7゜を剥取ることがある。When manufacturing FRP products, a pressure tape is wrapped around a winding body of a glass fiber base material impregnated with an uncured or semi-cured thermosetting resin, the resin is heated and cured in this state, and then, The 7° presser foot may come off.
例えば、FW法によるFRPパイプの製造においては、
熱硬化性樹脂を含浸したローピングをマンドレル上に捲
回し、次いで、押えテープ例えば、セロハンセイルム、
ポリエステルフィルム、或いはポリプロピレンフィルム
を巻付け、次いで、熱硬化性樹脂を加熱硬化し、而るの
ちに、押えテープを剥取つている。For example, in manufacturing FRP pipes using the FW method,
Roping impregnated with thermosetting resin is wound onto a mandrel and then a pressure tape such as cellophane salem,
A polyester film or a polypropylene film is wrapped around it, then the thermosetting resin is heated and cured, and then the pressure tape is peeled off.
しかしながら、従来の押えテープでは、テープ巻付け時
にテープの切断があると、テープの巻き解き、巻き緩み
が避けられず、テープの巻直しが余儀なくされる。However, with conventional presser tapes, if the tape is cut during tape winding, unwinding or loosening of the tape is unavoidable, making it necessary to rewind the tape.
従つて、作業能率の低下のみならず、テープ材料の無駄
が顕著であるといつた不利がある。更に、樹脂の加熱硬
化時に、押えテープ巻付層の重ね目への樹脂の浸入、ま
たは重ね目からの樹脂の流出が往々にして観られ、樹脂
硬化後の押えテープの剥取りがやつかいである。Therefore, there are disadvantages such as not only a decrease in work efficiency but also a significant waste of tape material. Furthermore, when the resin is heated and cured, the resin often seeps into or flows out from the overlapped layers of the presser tape wrapping layer, making it difficult to remove the presser tape after the resin has hardened. be.
成形面の平滑性の顕著な低下が避けられないといつた不
利もある。本発明者によると、上記の難点は、たとえば
天然ゴムを主体とする粘着剤を用いた粘着テープを押え
テープとして使用することにより解消できた。Another disadvantage is that the smoothness of the molding surface inevitably deteriorates. According to the present inventors, the above-mentioned difficulties could be solved by using, for example, an adhesive tape using an adhesive mainly composed of natural rubber as the presser tape.
すなわち、粘着テープによれば、テープ巻付け時にテー
プの切断があつても、テープの巻き解き、緩みがなくテ
ープ切断箇所から再度テープを巻きつづけることにより
、押え巻きを完了できる。更に、押えテープの重ね目が
粘着剤によりシールされるために、テープ重ね目への樹
脂の浸入、同重ね目からの樹脂の流出もなく、硬化体の
表面を良好な平滑面にできる。しかしながら、FRPの
押えテープとして粘着テープを使用する場合、上記の如
き通常の粘着テープでは、硬化体と粘着テープとが強力
に接着され、硬化体からのテープの剥取りが至難である
。That is, according to the adhesive tape, even if the tape is cut during tape winding, the pressure winding can be completed by continuing to wind the tape from the tape cut point without unwinding or loosening the tape. Furthermore, since the overlapping seams of the presser tape are sealed with the adhesive, resin does not intrude into the overlapping seams of the tape, nor does resin flow out from the overlapping seams, and the surface of the cured product can be made to have a good smooth surface. However, when using an adhesive tape as a holding tape for FRP, the cured product and the adhesive tape are strongly adhered to each other with the above-mentioned ordinary adhesive tape, and it is extremely difficult to remove the tape from the cured product.
従つて、汎用の粘着テープでは、FRP成形用押え巻テ
ープとして不適格である。本発明では、FRP成形用押
えテープに適した粘着テープを提供するものである。Therefore, general-purpose adhesive tapes are not suitable as presser tapes for FRP molding. The present invention provides an adhesive tape suitable for a presser tape for FRP molding.
すなわち、本発明に係るFRP成形用押え巻テープは、
支持フィルムに剥離層を介して粘着層を設けたことを特
徴とする構成である。That is, the presser tape for FRP molding according to the present invention is as follows:
This structure is characterized in that an adhesive layer is provided on the support film via a release layer.
第1図は本発明に係るFRP成形用押え巻テープを示し
ている。FIG. 1 shows a presser tape for FRP molding according to the present invention.
第1図において、1は支持フィルム、2は剥離剤層、3
は粘着層である。In FIG. 1, 1 is a support film, 2 is a release agent layer, and 3 is a support film.
is the adhesive layer.
本発明の押き巻きテープを用いて、FRP製品を製造す
る方法の例を挙げれば次の通りである。An example of a method for producing an FRP product using the rolled tape of the present invention is as follows.
マンドレル上に樹脂含浸した繊維基材(たとえば不飽和
ポリエステル樹脂、エポキシ樹脂の如き熱硬化性樹脂含
浸ガラスローピング)を所定厚みにワインデングして成
形材料とし、この成形材料上に、押え巻きテープ(たと
えば、幅1.5crn)をスパイラル状にラツプ巻き(
ハーフラツプ、1/5ラツプ、4/5ラツプ等)し、次
いで、これを加熱オーブン中に入れて前記樹脂を加熱硬
化させ、加熱硬化後、押え巻きテープを巻き戻せばよい
。この巻き戻し時には、支持フイルムが巻戻される(即
ち粘着剤は硬化樹脂側に転写する)。上記マンドレルを
押えテープの巻き戻し前もしくは後に抜取ることによつ
てFRP管が得られる。本発明において、粘着剤として
はいかなるものでもよいが、特に加熱硬化型の粘着剤が
好ましい。また粘着剤の材質としては、各種天然ゴム系
、合成ゴム系、アクリル系粘着剤等を用いることができ
る。本発明の押え巻きテープとしては、第1図に示した
もののほか、第2図に示す如きものも使用可能である。A fiber base material impregnated with a resin (for example, glass rope impregnated with a thermosetting resin such as an unsaturated polyester resin or an epoxy resin) is wound onto a mandrel to a predetermined thickness to form a molding material, and a pressing tape ( For example, wrap a 1.5 crn width in a spiral shape (
(half wrap, 1/5 wrap, 4/5 wrap, etc.), then placed in a heating oven to heat and cure the resin, and after heat curing, the presser tape may be rewound. During this unwinding, the support film is unwound (that is, the adhesive is transferred to the cured resin side). An FRP pipe is obtained by removing the mandrel before or after unwinding the holding tape. In the present invention, any adhesive may be used, but a heat-curable adhesive is particularly preferred. Further, as the material of the adhesive, various natural rubber-based, synthetic rubber-based, acrylic-based adhesives, etc. can be used. As the presser winding tape of the present invention, in addition to the one shown in FIG. 1, it is also possible to use the one shown in FIG. 2.
第2図中21は剥離剤層であり、他の符号の説明は第1
図と同様である。21 in FIG. 2 is a release agent layer, and explanations of other symbols are as follows.
It is similar to the figure.
このようなテープは、たとえばテープをテープロールと
して保存するとき、剥離剤層21の剥離力を剥離剤2の
剥離力より大とすることにより構成される。本発明の押
え巻きテープを用いてFRP製品を作るときには、上述
し,た樹脂含浸繊維基材に代えてガラスクロス等のシー
ト状繊維基材と基材とするプリプレグシートを用いるこ
ともできる。Such a tape is constructed by, for example, making the release force of the release agent layer 21 greater than the release force of the release agent 2 when the tape is stored as a tape roll. When making an FRP product using the pressure-wrapping tape of the present invention, a sheet-like fiber base material such as glass cloth and a prepreg sheet as the base material can also be used instead of the resin-impregnated fiber base material described above.
本発明に係る押え巻きテープにおいては、テープ巻付時
にテープの切断があつても、テープ巻き解き、緩みがな
く、テープの巻付作業性を良好に保証でき、更に、テー
プ重ね目への樹脂の流入がないから、硬化体表面を良好
な平滑面にできる。更に、樹脂硬化後においては、支持
フイルムと粘着層の中間に剥離剤層を介在させているの
で硬化体からの押えテープを構成する支持フイルムの剥
取りも至つて簡単である。本発明において、粘着テープ
の支持フイルムには引張り強度、耐熱性に秀れたものを
用いる必要があり、例えばポリエステルフイルム、ポリ
ィミドフイルム、2軸延伸ポリプロピレンフイルム等が
適当である。In the pressure winding tape according to the present invention, even if the tape is cut during tape winding, there is no tape unwinding or loosening, and good tape winding workability can be ensured. Since there is no inflow of water, the surface of the cured product can be made into a good smooth surface. Further, after the resin is cured, since the release agent layer is interposed between the support film and the adhesive layer, it is very easy to peel off the support film constituting the presser tape from the cured product. In the present invention, it is necessary to use a support film for the adhesive tape that has excellent tensile strength and heat resistance; for example, polyester film, polyimide film, biaxially oriented polypropylene film, etc. are suitable.
また、テープの幅は通常1.0〜5.0cm、好ましく
は1.2〜2.0(:IIL程度のものとされる。粘着
剤には、FRPの加熱硬化条件(通常、たとえば一般用
不飽和ポリエステル樹脂を用いた場合で、160℃×3
0〜60分)のもとにおいて自己流動性を呈しないもの
が一般的に使用される。The width of the tape is usually 1.0 to 5.0 cm, preferably about 1.2 to 2.0 cm (: IIL). When using unsaturated polyester resin, 160℃ x 3
Those that do not exhibit self-flowing properties under conditions (0 to 60 minutes) are generally used.
以下、本発明の実施例について説明する。実施例 1
厚さ25μのポリエステルフイルム上に、剥離剤(オク
タデシルアルコールとメチルメタアクリレートとアクリ
ルニトリルの反応物)を0.05〜0.289/イ塗布
し、その上に、アクリルゴム(レオケミカル社製レオコ
ート1020);100重量部、メラミン樹脂(大日本
インキ社製、J−821);1重量部、トルエン400
重量部の混合物を塗布し、150℃,3分の条件で乾燥
した。Examples of the present invention will be described below. Example 1 A release agent (a reaction product of octadecyl alcohol, methyl methacrylate, and acrylonitrile) was applied at a rate of 0.05 to 0.289/l on a polyester film with a thickness of 25 μm, and acrylic rubber (rheochemical 100 parts by weight, melamine resin (J-821, manufactured by Dainippon Ink Co., Ltd.); 1 part by weight, toluene 400
Parts by weight of the mixture were applied and dried at 150° C. for 3 minutes.
このようにして得られた幅1.5の粘着テープを、マン
ドレル上に設けた不飽和ポリエステル樹脂含浸ガラスロ
ーピング捲回体の表面に、スパイラル状3/5ラツプ巻
きで捲きつけ、160℃,60分間の加熱条件で硬化さ
せた後、粘着テープを剥取つたところ、極めて容易に剥
取ることができた。この時の剥離力は80g/15鼎で
あつた。なお、粘着テープ剥取りにより粘着剤は完全に
硬化体表面に移行したが、硬化体表面の粘着性は殆んど
なかつた。実施例 2
実施例1で用いてた粘着テープの背面に、シリコーン樹
脂(信越化学社製、KS−705F)100重量部、触
媒(信越化学社製、商品名PS−3)1重量部よりなる
溶液を固形分で0.05〜0.11/イ塗布し150℃
で3分間乾燥して背面剥離剤付粘着テープを得た。The thus obtained adhesive tape with a width of 1.5 mm was wound in a spiral 3/5 wrap around the surface of an unsaturated polyester resin-impregnated glass rope wound body provided on a mandrel, and the tape was wound at 160°C and 60°C. After curing under heating conditions for 1 minute, the adhesive tape was peeled off and was found to be extremely easy to peel off. The peeling force at this time was 80 g/15 kg. Although the adhesive was completely transferred to the surface of the cured product by peeling off the adhesive tape, there was almost no tackiness on the surface of the cured product. Example 2 On the back of the adhesive tape used in Example 1, 100 parts by weight of a silicone resin (KS-705F, manufactured by Shin-Etsu Chemical Co., Ltd.) and 1 part by weight of a catalyst (manufactured by Shin-Etsu Chemical Co., Ltd., trade name PS-3) were applied. Apply the solution at a solid content of 0.05 to 0.11/i at 150°C.
The adhesive tape was dried for 3 minutes to obtain an adhesive tape with a release agent on the back side.
この粘着テープを用いて実施例1と同様の手順でFRP
製品を製造したところ、実施例1と同様のFRP製品を
容易に得ることができた。なお、本実施例で用いた粘着
テープのテープロールの巻戻力は209/15U巾であ
つた。比較例
フイルムとして厚さ25μのポリエステルフイルムを、
粘着剤としてアクリル系のものをそれぞれ使用した通常
の粘着テープを実施例1と同様、押えテープとして使用
した。Using this adhesive tape, perform FRP in the same manner as in Example 1.
When the product was manufactured, an FRP product similar to that of Example 1 could be easily obtained. Note that the unwinding force of the tape roll of the adhesive tape used in this example was 209/15U width. A polyester film with a thickness of 25μ was used as a comparative example film.
As in Example 1, ordinary adhesive tapes using acrylic adhesives were used as presser tapes.
樹脂硬化後に、押えテープを剥離しようとしたが、テー
プと硬化樹脂体との接着力が著しく大で、テープが切断
してしまい、剥離不可能であつた。After the resin had hardened, an attempt was made to peel off the holding tape, but the adhesive force between the tape and the cured resin body was so strong that the tape would break, making it impossible to peel it off.
第1図および第2図は本発明の押え巻きテープの実例を
示す断面図である。
1・・・・・・支持フイルム、2・・・・・・剥離剤層
、3・・・・・・粘着層。FIGS. 1 and 2 are cross-sectional views showing examples of the presser winding tape of the present invention. 1... Support film, 2... Release agent layer, 3... Adhesive layer.
Claims (1)
とを特徴とするFRP成形用押え巻テープ。 2 支持フィルムの背面に剥離層を有する特許請求の範
囲第1項記載のFRP成形用押え巻テープ。[Scope of Claims] 1. A pressure-wrapping tape for FRP molding, characterized in that an adhesive layer is provided on a support film with a release layer interposed therebetween. 2. The press-wrap tape for FRP molding according to claim 1, which has a release layer on the back surface of the support film.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP53009519A JPS5921293B2 (en) | 1978-01-30 | 1978-01-30 | Pressure tape for FRP molding |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP53009519A JPS5921293B2 (en) | 1978-01-30 | 1978-01-30 | Pressure tape for FRP molding |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS54102371A JPS54102371A (en) | 1979-08-11 |
JPS5921293B2 true JPS5921293B2 (en) | 1984-05-18 |
Family
ID=11722500
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP53009519A Expired JPS5921293B2 (en) | 1978-01-30 | 1978-01-30 | Pressure tape for FRP molding |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5921293B2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH052154Y2 (en) * | 1987-07-08 | 1993-01-20 |
-
1978
- 1978-01-30 JP JP53009519A patent/JPS5921293B2/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH052154Y2 (en) * | 1987-07-08 | 1993-01-20 |
Also Published As
Publication number | Publication date |
---|---|
JPS54102371A (en) | 1979-08-11 |
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