JPH0260504B2 - - Google Patents
Info
- Publication number
- JPH0260504B2 JPH0260504B2 JP60126166A JP12616685A JPH0260504B2 JP H0260504 B2 JPH0260504 B2 JP H0260504B2 JP 60126166 A JP60126166 A JP 60126166A JP 12616685 A JP12616685 A JP 12616685A JP H0260504 B2 JPH0260504 B2 JP H0260504B2
- Authority
- JP
- Japan
- Prior art keywords
- steel
- extruder
- resin coating
- oil
- coating layer
- 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
- 229910000831 Steel Inorganic materials 0.000 claims description 46
- 239000010959 steel Substances 0.000 claims description 46
- 239000011347 resin Substances 0.000 claims description 39
- 229920005989 resin Polymers 0.000 claims description 39
- 238000000034 method Methods 0.000 claims description 34
- 239000011247 coating layer Substances 0.000 claims description 18
- 238000001816 cooling Methods 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 7
- 238000002844 melting Methods 0.000 claims description 5
- 230000008018 melting Effects 0.000 claims description 5
- 239000008188 pellet Substances 0.000 claims description 5
- 239000010410 layer Substances 0.000 claims 1
- 238000000576 coating method Methods 0.000 description 31
- 239000011248 coating agent Substances 0.000 description 30
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 16
- 230000002265 prevention Effects 0.000 description 11
- 238000004804 winding Methods 0.000 description 10
- 238000010438 heat treatment Methods 0.000 description 8
- 239000003973 paint Substances 0.000 description 6
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 5
- 229920002554 vinyl polymer Polymers 0.000 description 5
- 238000003672 processing method Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000003449 preventive effect Effects 0.000 description 3
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910052731 fluorine Inorganic materials 0.000 description 2
- 239000011737 fluorine Substances 0.000 description 2
- 238000010422 painting Methods 0.000 description 2
- 229920000728 polyester Polymers 0.000 description 2
- 229910019142 PO4 Inorganic materials 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- 239000000161 steel melt Substances 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B7/00—Details of, or auxiliary devices incorporated in, rope- or cable-making machines; Auxiliary apparatus associated with such machines
- D07B7/02—Machine details; Auxiliary devices
- D07B7/12—Machine details; Auxiliary devices for softening, lubricating or impregnating ropes, cables, or component strands thereof
-
- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/06—Rod-shaped
-
- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/15—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor incorporating preformed parts or layers, e.g. extrusion moulding around inserts
- B29C48/156—Coating two or more articles simultaneously
-
- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B1/00—Constructional features of ropes or cables
- D07B1/06—Ropes or cables built-up from metal wires, e.g. of section wires around a hemp core
- D07B1/0693—Ropes or cables built-up from metal wires, e.g. of section wires around a hemp core having a strand configuration
-
- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B7/00—Details of, or auxiliary devices incorporated in, rope- or cable-making machines; Auxiliary apparatus associated with such machines
- D07B7/02—Machine details; Auxiliary devices
- D07B7/14—Machine details; Auxiliary devices for coating or wrapping ropes, cables, or component strands thereof
- D07B7/145—Coating or filling-up interstices
-
- 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
- B29L2031/707—Cables, i.e. two or more filaments combined together, e.g. ropes, cords, strings, yarns
-
- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B2201/00—Ropes or cables
- D07B2201/20—Rope or cable components
- D07B2201/2015—Strands
- D07B2201/2042—Strands characterised by a coating
- D07B2201/2044—Strands characterised by a coating comprising polymers
-
- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B2201/00—Ropes or cables
- D07B2201/20—Rope or cable components
- D07B2201/2015—Strands
- D07B2201/2042—Strands characterised by a coating
- D07B2201/2045—Strands characterised by a coating comprising multiple layers
-
- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B2201/00—Ropes or cables
- D07B2201/20—Rope or cable components
- D07B2201/2015—Strands
- D07B2201/2046—Strands comprising fillers
-
- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B2207/00—Rope or cable making machines
- D07B2207/40—Machine components
- D07B2207/404—Heat treating devices; Corresponding methods
-
- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B2501/00—Application field
- D07B2501/20—Application field related to ropes or cables
- D07B2501/2015—Construction industries
- D07B2501/2023—Concrete enforcements
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Reinforcement Elements For Buildings (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Description
【発明の詳細な説明】
（産業上の利用分野）
PC鋼より線のアンボンド加工方法として種々
の方法があるが、アンボンド加工の目的は、コン
クリートとの摩擦抵抗を少なくすることと防錆力
にある。[Detailed Description of the Invention] (Field of Industrial Application) There are various methods for unbonding PC steel strands, but the purpose of unbonding is to reduce frictional resistance with concrete and improve rust prevention. be.
本発明は、その目的を達するためのPC鋼より
線のアンボンド加工方法に関するものである。 The present invention relates to a method for unbonding PC steel strands to achieve the object.
（従来の技術）
従来のPC鋼より線のアンボンド加工方法を大
別すると、
(1) 第３図に示す様にPC鋼より線１の表面に油
脂系のもの３を塗布し、次に押出機法等による
ビニール被覆２等を形成する方法、
(2) 第４図に示す様にPC鋼より線１を表面に油
脂系のもの３を塗布し、その上にシースを用い
る方法、
(3) 第５図に示す様にPC鋼より線１の表面に弗
素系或いはポリエステルル系、又はアクリル系
の塗料６を塗り、その表面に押出機法等による
ビニール被覆２等を形成する方法、
に別けられ、図面により説明すると、第３図、第
４図、第５図は、従来のアンボンド加工方法によ
るPC鋼より線の断面図で、第３図はPC鋼より線
１の表面に油脂系のもの３を塗布し、次に押出機
によるビニール被覆等を形成する方法によるもの
で、１はPC鋼より線、２は押出機法によるビニ
ール等の被覆、３は油脂類。第４図はPC鋼より
線表面に油脂系のものを塗布し、その上にシース
を用いる方法によるもので、１はPC鋼より線、
３は油脂類、４はシース、第５図はPC鋼より線
表面に塗料を塗り、その上に押出機法によるビニ
ール被覆等を形成する方法によるもので、１は
PC鋼より線、２は押出機法によるビニール等の
被覆、５は空洞化部分、６は塗料である。(Prior technology) Conventional unbonding methods for PC steel stranded wires can be roughly divided into: (1) As shown in Figure 3, an oil-based material 3 is applied to the surface of the PC steel stranded wire 1, and then extrusion is performed. (2) As shown in Fig. 4, a method of applying an oil-based material 3 to the surface of the prestressed steel wire 1 and using a sheath on top of it, (3) ) As shown in Figure 5, a method in which a fluorine-based, polyester-based, or acrylic paint 6 is applied to the surface of the PC steel stranded wire 1, and a vinyl coating 2, etc. is formed on the surface by an extruder method, etc. To explain it separately and with drawings, Figures 3, 4, and 5 are cross-sectional views of PC steel stranded wire by the conventional unbonding method. 3 is applied, and then a vinyl coating is formed using an extruder. 1 is a PC steel stranded wire, 2 is a vinyl coating using an extruder method, and 3 is an oil or fat. Figure 4 shows a method in which an oil-based material is applied to the surface of a PC steel stranded wire and a sheath is placed on top of it.
3 is an oil, 4 is a sheath, and Figure 5 is a method in which paint is applied to the surface of a PC steel wire, and then a vinyl coating is formed on it using an extruder method.
PC steel stranded wire, 2 is covered with vinyl or the like by an extruder method, 5 is a hollowed part, and 6 is a paint.
これら既往のアンボンド加工方法により、PC
鋼より線の防錆は完全と考えられていたが、いず
れの方法も防錆力に欠ける欠陥があることが最近
の研究で明らかにされている。 By using these existing unbonding processing methods, PC
Rust prevention for steel stranded wire was thought to be perfect, but recent research has revealed that both methods have flaws in their ability to prevent rust.
即ち、(1)の場合は第３図に示すようにPC鋼よ
り線に塗布した油脂系防錆材に依存しているが、
防錆材そのものの経年劣化や、表面塗布の不完全
が原因となつて防錆耐久力が完全とは云えない。 In other words, in the case of (1), as shown in Figure 3, it depends on the oil-based rust preventive material applied to the PC steel stranded wire.
Rust preventive durability cannot be said to be perfect due to age-related deterioration of the rust preventive material itself or incomplete surface application.
(2)の場合も(1)の場合同様、防錆力はPC鋼より
線表面に塗布した油脂系ものに依存しているの
で、(1)の場合と同様な防錆耐久力に欠ける。 In the case of (2), as in the case of (1), the rust prevention ability is dependent on the oil-based material applied to the wire surface rather than the PC steel, so it lacks the same rust prevention durability as in the case of (1).
(3)の場合は、第５図に示すようにPC鋼より線
表面に弗素系或いは、ポリエステル系、又はアク
リル系等の塗料を塗り、その塗装で防錆力を図つ
ているが、この種の一般的な塗装の場合、塗装前
の前処理を充分行ない、最終的には燐酸塩被膜処
理を行なつた後、塗装しないと塗膜の剥離等が起
きる。 In the case of (3), as shown in Figure 5, a fluorine-based, polyester-based, or acrylic-based paint is applied to the surface of the PC steel stranded wire in order to prevent rust. In the case of general painting, if a sufficient pretreatment is performed before painting, and the final phosphate coating is not applied, peeling of the paint film will occur.
又、この種の塗装では、塗膜が薄く次工程に於
ける擦り傷等が発生し、防錆力は完全とは云えな
い。 In addition, with this type of coating, the coating film is thin and scratches occur during the next process, so the rust prevention ability cannot be said to be perfect.
（発明が解決しようとする問題点）
本発明はこの様な状況に鑑み、長年に亘り、
PC鋼より線のアンボンド加工方法、特に防錆力
について研究を進め、防錆力を向上せしめること
を目的として開発に成功したものである。(Problems to be solved by the invention) In view of this situation, the present invention has been developed over many years,
We conducted research on unbonding processing methods for prestressed steel strands, and in particular on rust prevention, and succeeded in developing this product with the aim of improving its rust prevention ability.
（問題点を解決するための手段）
本発明はPC鋼より線に押出機法樹脂被覆層を
設けるに当り、その樹脂ペレツト溶融温度より少
なくとも50℃以上高く、PC鋼より線を加熱して、
一次樹脂被覆層を設け、これを冷却した後、次に
その表面に油脂系のものを薄く塗布し、又は塗布
なしで、更にその表面に押出機等による二次樹脂
被覆層を形成することを特徴とするPC鋼より線
のアンボンド加工方法である。(Means for Solving the Problems) In the present invention, when providing a resin coating layer using an extruder method on a PC steel strand, the PC steel strand is heated to a temperature at least 50°C higher than the melting temperature of the resin pellet.
After providing the primary resin coating layer and cooling it, the surface may be thinly coated with an oil-based coating, or a secondary resin coating layer may be further formed on the surface using an extruder or the like without coating. This is a unique method for unbonding PC steel strands.
第１図は、本発明アンボンド加工方法による
PC鋼より線の断面図で、１はPC鋼より線、２は
押出機法による二次樹脂被覆層、３は油脂類、７
は押出機法による一次樹脂被覆層。 Figure 1 shows the method of unbonding according to the present invention.
This is a cross-sectional view of a PC steel stranded wire, where 1 is a PC steel stranded wire, 2 is a secondary resin coating layer made by an extruder method, 3 is oil and fat, 7
is the primary resin coating layer made using an extruder method.
第２図は本発明アンボンド加工工程図で、１は
PC鋼より線、８は巻戻装置、９は加熱炉、１０
は押出機（一次樹脂被覆）、１１は冷却槽、１２
は油脂塗布槽、１３は押出機（二次樹脂被覆）、
１４は冷却槽、１５は巻取ドラム、１６は巻取装
置である。 Figure 2 is an unbonding process diagram of the present invention, and 1 is
PC steel stranded wire, 8 is unwinding device, 9 is heating furnace, 10
is an extruder (primary resin coating), 11 is a cooling tank, 12
13 is an oil coating tank, 13 is an extruder (secondary resin coating),
14 is a cooling tank, 15 is a winding drum, and 16 is a winding device.
本発明アンボンド加工方法の押出機一次樹脂被
覆法はPC鋼より線を押出機、樹脂ペレツト溶融
温度より高く加熱してPC鋼より線表面に樹脂を
充分に融着させる方法であつて、その目的はPC
鋼より線の防錆耐久力を計つたものである。 The extruder primary resin coating method of the unbonding method of the present invention is a method in which the PC steel strand is heated in an extruder to a temperature higher than the melting temperature of the resin pellet to sufficiently fuse the resin to the surface of the PC steel strand. is a PC
It measures the rust prevention durability of steel stranded wire.
例えば、PC鋼より線の加熱を行わず押出機法
で樹脂被覆層を設けた場合、樹脂の冷却速度が早
くなることから、樹脂がPC鋼より線表面に溶融
密着することなく硬化し、特に側線より合わせ部
分に螺旋状溝部は空洞化したまゝとなる。又、そ
の加熱温度はPC鋼より線表面に溶融密着する程
度の温度では、螺旋状溝部までの溶融密閉は不可
能であり空洞化は防げない。従つてそれより高い
温度に加熱する必要がある。 For example, if a resin coating layer is provided using an extruder method without heating the wire from PC steel, the cooling rate of the resin will be faster, so the resin will harden without melting and adhering to the wire surface than from PC steel. The spiral groove portion remains hollow at the side line twisting portion. Furthermore, if the heating temperature is such that the PC steel melts and adheres to the wire surface, it is impossible to melt and seal up to the spiral groove, and cavitation cannot be prevented. Therefore, it is necessary to heat it to a higher temperature.
（作用）
本発明押出機法樹脂被覆の場合、PC鋼より線
１の加熱温度を押出機樹脂ペレツト温度より高く
することによつて樹脂は完全にPC鋼より線１の
表面に離着するものであるから被覆厚さに関係な
く、素線（側線）間の螺旋状溝部も第１図に示す
通り完全に被覆され、溝部が空洞化することは全
くない。(Function) In the case of resin coating using the extruder method of the present invention, by making the heating temperature of the PC steel wire 1 higher than the extruder resin pellet temperature, the resin completely separates and adheres to the surface of the PC steel wire 1. Therefore, regardless of the coating thickness, the spiral grooves between the strands (side wires) are completely covered as shown in FIG. 1, and the grooves are never hollowed out.
又、PC鋼より線１に引張力を加えてこれを引
張つても、表面に融着された防錆被覆７はPC鋼
より線１の伸びに追随して、引き伸ばされたPC
鋼より線１が破断に至るまで表面を完全被覆し、
防錆力は全く阻害されない。 Moreover, even if a tensile force is applied to the wire 1 from the PC steel and it is pulled, the anti-rust coating 7 fused to the surface will follow the elongation of the wire 1 from the PC steel, and the stretched PC
Completely cover the surface of the steel strand 1 until it breaks,
Rust prevention ability is not inhibited at all.
又、定着の場合もクサビ作用による定着方法で
あれば、樹脂被覆をはがす必要がなく、被覆の上
から定着が可能であり、従来問題となつていた
PC鋼より線定着部の腐食も解消される。 Also, in the case of fixing, if the fixing method uses wedge action, there is no need to peel off the resin coating, and fixing can be done from above the coating, which was a problem in the past.
Corrosion of the wire anchorage is also eliminated by using PC steel.
従つて防錆力は他の方法から見て著しく向上
し、摩擦抵抗も樹脂ペレツト溶融温度よりPC鋼
より線の加熱温度を少なくとも50℃以上に高くす
ることによつて一次樹脂被覆層の平滑度が著しく
高くなり、押出機法等による二次樹脂被覆層との
間に油脂等の潤滑材をはさまなくても容易に滑動
し、摩擦係数は従来のアンボンドPC鋼より線の
１／２以下となる。 Therefore, the rust prevention ability is significantly improved compared to other methods, and the friction resistance is also improved by increasing the heating temperature of the PC steel strands to at least 50℃ higher than the melting temperature of the resin pellets, thereby improving the smoothness of the primary resin coating layer. The friction coefficient is significantly higher than that of conventional unbonded PC steel, and the friction coefficient is less than 1/2 that of conventional unbonded PC steel. becomes.
（実施例）
以下は本発明の実施例第２図（加工工程）に従
つてその内容を説明する。(Example) The contents of the embodiment of the present invention will be explained below with reference to FIG. 2 (processing steps).
先ず巻戻し装置８に載せられたPC鋼より線１
を巻取装置１６上の巻取ドラム１５までスレーデ
イング行なう。スレーデイングが完了すると運転
を開始しPC鋼より線１は加熱炉９で加熱され、
押出機（一次樹脂被覆）１０にて樹脂がPC鋼よ
り線１の表面に融着され、冷却槽１１にて次の油
脂塗布に支障のない程度まで冷却されて防錆用の
被覆層７を形成する。 First, the PC steel strand 1 placed on the unwinding device 8
Sledding is performed to the winding drum 15 on the winding device 16. When sledding is completed, operation starts and the PC steel stranded wire 1 is heated in the heating furnace 9.
The resin is fused to the surface of the PC steel stranded wire 1 in an extruder (primary resin coating) 10, and cooled in a cooling tank 11 to a level that does not interfere with the next oil coating to form a rust-preventing coating layer 7. Form.
次に油脂塗布槽１２にて所定厚さの油脂が塗布
された後、押出機（二次樹脂被覆）１３によつて
油脂の表面上に樹脂被覆が形成される。 Next, after a predetermined thickness of oil is applied in the oil coating tank 12, a resin coating is formed on the surface of the oil by an extruder (secondary resin coating) 13.
しかし、油脂塗布槽１２による油脂塗布層３は
必ずしも必要なものではなく、不要の場合は、一
次樹脂被覆層７の上に直接押出機（二次樹脂被
覆）１３による二次樹脂被覆層２を形成すること
がある。 However, the oil coating layer 3 formed by the oil coating tank 12 is not necessarily necessary, and if unnecessary, the secondary resin coating layer 2 formed by the extruder (secondary resin coating) 13 may be applied directly onto the primary resin coating layer 7. may form.
押出機（二次樹脂被覆）１３により形成された
二次樹脂被覆層２は、次の冷却槽１４にて巻取り
に支障のない程度まで冷却された後、巻取装置１
６上の巻取ドラム１５に連続的に巻取られてい
く。 The secondary resin coating layer 2 formed by the extruder (secondary resin coating) 13 is cooled in the next cooling tank 14 to a level that does not interfere with winding, and then the secondary resin coating layer 2 is transferred to the winding device 1.
6 is continuously wound up on the winding drum 15.
尚、以上の製造工程はPC鋼より線となつたも
のを押出機（一次樹脂被覆）から始める場合の工
程であり、PC鋼より線製造工程に組入れ、連続
的に行なう場合は、PC鋼より線製造工程の最終
工程に於けるブルーイングの予熱を利用すれば加
熱炉９は不必要となる。 Note that the above manufacturing process is for starting PC steel stranded wire from an extruder (primary resin coating), and if it is incorporated into the PC steel stranded wire manufacturing process and carried out continuously, If preheating by bluing in the final step of the wire manufacturing process is used, the heating furnace 9 becomes unnecessary.
（発明の効果）
本発明は、従来の加工法に比し、塗装被覆表面
の平滑度が著しく向上し摩擦抵抗が少なく容易に
滑動すると共に、防錆力も大でPC鋼より線のア
ンボンド加工法として画期的発明であり、その効
果は頗る大である。(Effects of the invention) Compared to conventional processing methods, the present invention provides a method for unbonding wires stranded in PC steel, which significantly improves the smoothness of the painted coating surface, allows easy sliding with less frictional resistance, and has greater rust prevention ability. It is a groundbreaking invention, and its effects are enormous.
第１図は本発明品の断面図、第２図は本発明の
加工工程図、第３図、第４図及び第５図は従来加
工法の製品の断面図である。
１はPC鋼より線、２は押出機法二次樹脂被覆
層、３は油脂類、４はシース、５は空洞化部分、
６は塗料、７は押出機法一次樹脂被覆層、８は巻
取装置、９は加熱炉、１０は押出機（一次樹脂被
覆）、１１は冷却槽、１２は油脂塗布槽、１３は
押出機（二次樹脂被覆）、１４は冷却槽、１５は
巻取ドラム、１６は巻取装置。
FIG. 1 is a sectional view of the product of the present invention, FIG. 2 is a process diagram of the process of the present invention, and FIGS. 3, 4, and 5 are sectional views of the product manufactured using conventional processing methods. 1 is a PC steel stranded wire, 2 is an extruder method secondary resin coating layer, 3 is an oil and fat, 4 is a sheath, 5 is a hollowed part,
6 is a paint, 7 is an extruder method primary resin coating layer, 8 is a winding device, 9 is a heating furnace, 10 is an extruder (primary resin coating), 11 is a cooling tank, 12 is an oil coating tank, 13 is an extruder (Secondary resin coating), 14 is a cooling tank, 15 is a winding drum, and 16 is a winding device.
Claims (1)
に当り、その樹脂ペレツト溶融温度より少なくと
も50℃以上高くPC鋼より線を加熱して一次樹脂
被覆層を設け、これを冷却した後、次にその表面
に油脂系のものを薄く塗布し、又は塗布なしで、
更にその表面に押出機法等による二次樹脂被覆層
を形成することを特徴とするPC鋼より線のアン
ボンド加工方法。1. When applying a resin coating layer to a PC steel stranded wire using an extruder method, the PC steel stranded wire is heated at least 50°C higher than the melting temperature of the resin pellet to form a primary resin coating layer, and after cooling, the Apply a thin layer of oil-based material to the surface, or do not apply it at all.
A method for unbonding PC steel strands, which further comprises forming a secondary resin coating layer on the surface using an extruder method or the like.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60126166A JPS61284416A (en) | 1985-06-12 | 1985-06-12 | Unbond processing method for pc steel twisted wire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60126166A JPS61284416A (en) | 1985-06-12 | 1985-06-12 | Unbond processing method for pc steel twisted wire |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61284416A JPS61284416A (en) | 1986-12-15 |
| JPH0260504B2 true JPH0260504B2 (en) | 1990-12-17 |
Family
ID=14928311
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60126166A Granted JPS61284416A (en) | 1985-06-12 | 1985-06-12 | Unbond processing method for pc steel twisted wire |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61284416A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2630967B1 (en) * | 1988-05-09 | 1993-12-10 | Atochem | PROCESS FOR THE MANUFACTURE OF LONG FIBER REINFORCED THERMOPLASTIC RESINS |
| JPH072256B2 (en) * | 1990-08-31 | 1995-01-18 | 株式会社タイムエンジニアリング | Method for producing anticorrosion coated PC strand |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51103970A (en) * | 1975-03-12 | 1976-09-14 | Sekisui Jushi Kk | Goseijushihifukukinzokusenno seizohoho |
| JPS52121069A (en) * | 1976-04-05 | 1977-10-12 | Nippon Barukaa Kougiyou Kk | Method of producing thermoplastic resin string containing core wire |
-
1985
- 1985-06-12 JP JP60126166A patent/JPS61284416A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51103970A (en) * | 1975-03-12 | 1976-09-14 | Sekisui Jushi Kk | Goseijushihifukukinzokusenno seizohoho |
| JPS52121069A (en) * | 1976-04-05 | 1977-10-12 | Nippon Barukaa Kougiyou Kk | Method of producing thermoplastic resin string containing core wire |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61284416A (en) | 1986-12-15 |
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|---|---|---|---|
| EXPY | Cancellation because of completion of term |