WO1996019744A1 - Matiere a bas metsuke pour barriere d'arret d'eau, destinee aux cables de communications, et cable de communications l'utilisant - Google Patents

Matiere a bas metsuke pour barriere d'arret d'eau, destinee aux cables de communications, et cable de communications l'utilisant Download PDF

Info

Publication number
WO1996019744A1
WO1996019744A1 PCT/JP1995/002561 JP9502561W WO9619744A1 WO 1996019744 A1 WO1996019744 A1 WO 1996019744A1 JP 9502561 W JP9502561 W JP 9502561W WO 9619744 A1 WO9619744 A1 WO 9619744A1
Authority
WO
WIPO (PCT)
Prior art keywords
water
sheet
range
weight
communication
Prior art date
Application number
PCT/JP1995/002561
Other languages
English (en)
Japanese (ja)
Inventor
Yukio Sakuraba
Hirohumi Morishima
Original Assignee
Tokai Rubber Industries, Ltd.
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Tokai Rubber Industries, Ltd. filed Critical Tokai Rubber Industries, Ltd.
Priority to KR1019960704404A priority Critical patent/KR970701361A/ko
Publication of WO1996019744A1 publication Critical patent/WO1996019744A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
    • H01B7/28—Protection against damage caused by moisture, corrosion, chemical attack or weather
    • H01B7/282—Preventing penetration of fluid, e.g. water or humidity, into conductor or cable
    • H01B7/285—Preventing penetration of fluid, e.g. water or humidity, into conductor or cable by completely or partially filling interstices in the cable
    • H01B7/288—Preventing penetration of fluid, e.g. water or humidity, into conductor or cable by completely or partially filling interstices in the cable using hygroscopic material or material swelling in the presence of liquid
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables

Definitions

  • the present invention relates to a low-weight type water-blocking material (water-blocking tape) used for stopping water between a cable core of a metal cable or an optical cable and a sheath material covering the outer periphery thereof, It concerns the communication cable used.
  • water-blocking tape water-blocking tape
  • a water-blocking material disclosed in Japanese Patent Application Laid-Open No. Hei 13304145 is known.
  • This water-blocking material contains epoxy groups in a carboxyl group in a cross-linked product of a copolymer of isobutylene and maleic anhydride in the form of an alkali metal salt such as sodium, potassium, lithium, or ammonium, or an ammonium salt.
  • a mixture of a compound, a compound containing an amino group, and a crosslinking agent such as urea-melamine resin, which is heated and crosslinked and insolubilized, and an aqueous solution of a water-absorbing material is held on a sheet substrate serving as a support.
  • an ammonium salt is held on a sheet substrate as a support using an adhesive.
  • the sheet base material as the support is, for example, a film-like or sheet-like cloth, non-woven fabric, or the like
  • these water-impervious materials are obtained by immersing the water-absorbent solution in these non-woven fabrics and then squeezing them with a mangle.
  • a predetermined amount of the water absorbing composition is adhered to the sheet substrate.
  • the water absorption ratio for artificial seawater is 3 times or more by the CB method, and it is said to be extremely excellent in water absorption.
  • this communication cable has a core 64 with a large number of insulated metal wires 62, 62, ... bundled together by a binder 66, which is ⁇ Encased by plastic film 68 called wrap.
  • a binder 66 which is ⁇ Encased by plastic film 68 called wrap.
  • the gap between the metal wires 62, 62, ... is filled with a petram-based / bolibutene-based jelly in the core 64, and the jelly, which is the filler material, leaks to the outside by the core wrap 68. It is considered not to be.
  • a corrugated metal protective material 70 made of aluminum (A 1) stainless steel (SUS) is wound around the core tube 68, and the outer periphery thereof is covered with a sheath material 72. ing. And koa love
  • the jelly-like filling composition containing extender oil as a main component also has a water stopping property between 68 and the metal protective material 70 or between the metal protective material 70 and the sheath material 72. Filled to keep.
  • water-blocking tapes generally have high rigidity. Therefore, when this impermeable tape is wrapped around the cable, it floats up and the adaptability to the cable core is poor. If this is to be applied to a communication cable of the type disclosed in the above-mentioned Japanese Patent Application Laid-Open No. 6-203637, for example, between a core rub of the communication cable and a metal protection material, or a metal protection material And the sheath material, but when this was actually applied, the rigidity of the water-blocking tape was too high, and there was a problem with the water stoppage.
  • the water-blocking material water-blocking tape
  • the tension of the water-blocking tape is increased at the time of winding around the cable, and the sheath material will be covered.
  • the sheath material shrinks, a problem occurs that the waterproof tape is pushed in due to the contraction of the sheath material, thereby damaging the appearance of the communication cable.
  • the present invention has been made in order to solve such a problem.
  • by selecting the optimal range of rigidity of the water-blocking material (water-blocking tape) it is possible to avoid the floating or sinking phenomenon when winding the cable, and to improve the appearance and winding workability of the cable. The goal is to obtain good water stoppage.
  • the present invention relates to a communication cable of the type disclosed in the above-mentioned Japanese Patent Application Laid-open No. Hei 6-230647, which is provided between a core rub wound around a cable core and a metal protective material, or between a metal protective material and a sheath. Focusing on the fact that it does not require so much water-stopping properties between the material and the cable, it is suitable for this type of application, so-called low-weight evening eve (evening amount of the water-absorbing composition is small per unit area) for communication cables. Providing impermeable material Things. Disclosure of the invention
  • the first water-blocking material for a low-weight tie communication cable of the present invention is formed by forming a water-absorbing composition layer having a basis weight of 40 g / m 2 or less on the surface of a sheet substrate.
  • the stiffness value of the water-blocking material is in the range of 0.2 to 1.5 cm 2 Zcm in the longitudinal direction, and is in the range of 0.2 to 0.6 cm 2 / cm in the transverse direction. It is.
  • the second water-blocking material for a communication cable has a sandwich structure in which a water-absorbing composition layer having a basis weight of 40 g / m 2 or less is interposed between a pair of sheet base materials.
  • the rigidity value of the water barrier material is in the range of 0.2 to 1.5 gf cm 2 Zcm in the vertical direction, and in the range of 0.2 to 0.6 gf cm 2 / cm in the horizontal direction. That is what you do.
  • the water-absorbing composition layer contains additives such as water-absorbing polymer particles, organic binders, other surfactants, antioxidants, and inorganic fillers.
  • additives such as water-absorbing polymer particles, organic binders, other surfactants, antioxidants, and inorganic fillers.
  • water-absorbing polymer particles include crosslinked polyacrylates: neutralized starch-acrylic acid graft polymer, modified crosslinked polyvinyl alcohol, crosslinked isobutylene-maleic anhydride copolymer, and polyethylene oxide. Crosslinked product, Acrylamide Acrylic acid crosslinked polymer, etc. Is mentioned.
  • These water-absorbing polymer particles must fall apart from the sheet base material when they come in contact with water, but there is no particular limitation on the particle shape and particle size. Or a distorted shape.
  • the particle size is preferably in a range (45 to 425 m) that does not slow down the rate of water absorption and swelling and does not delay falling off from the sheet base material. In order not to impair the water shielding of the micro gaps, it is desirable that particles having a particle size of 45 or less be contained to some extent (5% by weight or more). These water-absorbing polymer particles may be used alone or in combination of two or more.
  • Organic binders mainly include rubber-based materials and thermoplastic elastomer-synthetic resin-based materials.
  • Rubber-based materials include styrene rubber, butyl rubber, butadiene rubber, isoprene rubber, ethylene-propylene rubber, chlorosulfonated polyethylene rubber, silicon rubber: chloroprene rubber, polyurethane rubber, acrylic rubber, chlorinated butyl rubber, and epichlorohydrin. Rubber and others.
  • a bundle of communication lines formed and a waterproof jelly sheet interposed between the communication lines are wound with a live film, a metal protective sheet is wound around the outer periphery of the live film, and a sheath material is further wound around the outer periphery.
  • a communication wire bundle formed by assembling a large number of communication lines and a waterproof jelly sheet interposed between the communication lines are wrapped around a wrap film, and the wrap film is formed.
  • a water-impervious tape is interposed between them, and this water-impervious tape has a sandwich structure having a water-absorbing composition layer with a basis weight of 40 g / z or less between a pair of sheet base materials.
  • the stiffness of the impermeable tape itself is in the range of 0.2 to 1.5 gf cm 2 / cm in the longitudinal direction, and is in the range of 0.2 to 0.6 gf cm 2 / cm in the transverse direction. It is.
  • the rigidity of the waterproofing material (waterproofing tape) for a cable can be determined in the vertical direction (tape length).
  • Direction 0.2 to: 1.5 gf cm 2 / cm, and lateral (tape width direction) 0.2 to 0.6 gf cm 2 / cm. .
  • the nonwoven sheet substrate is a polyester-based example Te, in the case of two-layer structure that the nonwoven fabric weight is in the range of 25 to 70 g / m 2, the nonwoven fabric weight in the case of the sandwich structure , 5-20 g / m 2 .
  • the longitudinal stiffness is higher than 1.5 gf cm 2 / cm, or the lateral stiffness If it is higher than 0.6 cm 2 / cm, the water-impervious tape rises when the water-impervious material (water-impervious tape) is wrapped around the cable, creating a gap between the tape and between the tape and the core, resulting in water barrier. Not preferred.
  • the tape will not seal when the tape is wound around the cable.
  • the sheath material is covered with the sheath material or when the sheath material is coated on the outside, the tape is pressed down by the contraction of the sheath material, and the appearance of the cable is impaired.
  • FIG. 1 is a perspective view of the external appearance of a communication cable to which the present invention is applied
  • Fig. 2 is a schematic diagram showing the main parts of a stiffness measurement test (KES method) used to confirm the effectiveness of the present invention
  • FIG. 3 is a diagram illustrating a method of evaluating the amount of water-impervious material sheet dropping into a cable core used to confirm the effectiveness of the present invention
  • FIG. Fig. 5 is a perspective view of an L-shaped water impermeability measuring device
  • Fig. 6 is an external perspective view of a conventionally known communication cable.
  • the communication cable 10 shown in FIG. 1 has a large number of copper wires 1 2, 1 2... Bundled into one to form a cable core 14, and the cable core 14 is tied to a binding string 16. After that, it is wrapped with polyethylene terephthalate (PET) live film 18.
  • PET polyethylene terephthalate
  • a water-impervious tape 20 is wrapped around the live film 18 and the outside is covered with a corrugated metal protective material 22 such as aluminum foil or stainless steel foil, and a sheath material 24 Is coated.
  • a corrugated metal protective material 22 such as aluminum foil or stainless steel foil
  • the cable core 14 is filled with a jelly-like material (not shown) such as a petram type or a polybutene type.
  • a jelly-like material such as a petram type or a polybutene type.
  • the jelly-like material prevents water from entering.
  • Wrap film 18 prevents the jelly pieces from leaking out.
  • test sample 11 is a so-called impregnated water-blocking material (water-blocking tape) disclosed in Japanese Patent Application Laid-Open No. Hei 13-30445 described as a conventional technique.
  • the sheet base material of the water barrier material of each of the test samples 1 to 11 is made of a polyester spunbond nonwoven fabric.
  • the test samples 1 to 5 use the product name of “Munix 70xx xWTO” manufactured by Unitika, and the test samples 6 to 10 ( For the product with a sandwich structure, the product name “Eku-Ire” manufactured by Toyobo Co., Ltd. is used.
  • the fineness of the polyester single yarn is 2 denier
  • the weight of the nonwoven fabric is selected in several steps within the range of 20 to 80 g / m2. .
  • the fineness of the polyester single yarn is still 2 denier, but the weight of the nonwoven fabric is several steps within a relatively narrow range of 10 to 30 g / m2. Is selected.
  • the water-absorbing composition two kinds of compositions shown in Table 2 below were used. In the following description, all units “parts” mean “parts by weight”.
  • the water-absorbing compositions No. 1 and No. 2 are both water-absorbing resin polymers (Kuraray's trade name “KI Gel 201 K”), which are cross-linked metal salts of isobutylene-maleic acid copolymer. — F3 ”)
  • the basic composition is 100 parts of organic binder with respect to 150 parts.
  • the No. 1 water-absorbing composition uses styrene-butadiene-styrene (SBS) thermoplastic elastomer as the organic binder.
  • SBS styrene-butadiene-styrene
  • Table 1 shows which type of water-absorbing composition was used in each of the test samples 1 to 10.Table 1 also shows the amount of the water-absorbing composition applied. Is shown. For test samples 1 to 5 having a two-layer structure, the No. l water-absorbing composition was used, and the basis weight was constant at 20 g / m 2 . Further information on test samples 6-10 of Sandi Dzuchi structure, using a water-absorbing composition No.2, its weight per unit area is constant at 30 g / m 2.
  • water-blocking materials are prepared by dissolving and dispersing the above-mentioned organic binder in an organic solvent such as toluene: methyl ethyl ketone and ethyl acetate using a stirrer. The particles are mixed, and further other additives are mixed if necessary. Then, this is coated on the surface of the sheet base material by using a barco, a mouth, a ruco, etc. to form a water-absorbing composition layer.
  • a predetermined water-blocking tape can be obtained by further laminating a sheet substrate on the surface of the water-absorbing composition layer.
  • the impregnated water-blocking tape of the test sample 11 shown as a comparative example is, specifically, a water-absorbing resin composition called “KI gel solution system” by Kuraray (isobutylene-maleic acid).
  • 100 parts: 20 parts of ⁇ solution and ⁇ solution of a copolymer (mainly a crosslinked product of a metal salt) are mixed in a ratio of 100 parts: 20 parts, and the mixed solution is impregnated (penetrated) into the nonwoven fabric of the sheet base material.
  • the desired amount of the water-absorbent resin composition is supported on the sheet substrate by squeezing with a wrench, etc.
  • the sheet substrate is a polyester spunbond nonwoven fabric (trade name “Marix 70400WTO” manufactured by Unitika). ), Polyester Fineness 2 denier singles yarn, the adhesion amount of c
  • the water absorbing composition is used as a non-woven fabric weight 40 g / m 2 is a 20 g / m 2.
  • test items include the rigidity characteristics (longitudinal and lateral directions) of the water-blocking material, the floating (falling) property to the cable core, and the water-blocking (L-shape), each of which is described below. Measured by the method.
  • this is a test on how water can be blocked in the longitudinal direction of the cable when the cable is cut by external force and water enters from the cross section of the cable. is there.
  • This device is described with reference to FIG. 5.
  • the test piece is wound around a plastic rod 50 having an outer diameter of 1 Ommoi and passed through a glass tube 52 having an inner diameter of 11.1 mm0. The clearance between the glass tube and the glass tube is 0.6 mm).
  • a water supply pipe 56 is provided at one end of the simulated cable 54, a cock (not shown) is opened with the water supply pipe 56 filled with fresh water up to a height of lm, and water is injected into the cable 54.
  • the length of the water running in the L-shape was evaluated based on how long the fresh water ran in the cable 54 and clogged.
  • test samples 1 to 5 having a two-layer structure.
  • the test sample 1 of the comparative product has an excessively large lift and fails the L-shaped water-blocking
  • Sample 2 was judged to be unacceptable because the drop amount was too large (X mark).
  • the floating (dip) amount was small, and good results were obtained in the winding workability and the L-shaped water shielding (marked with ⁇ ).
  • the test samples 6 and 7 of the comparative products have an excessively large floating amount, and the L-shaped water barrier is rejected (marked X).
  • the floating (drop) amount was small, and the winding workability and the L-shaped water-blocking property were good (marked with “ ⁇ ”).
  • test sample 11 of the comparative product also had an L-shaped Failed (marked X).
  • test samples 1 to 11 the test samples 1, 6, 7, and 1 1 with a large floating amount and L-shaped water impermeability were rejected were compared.
  • the stiffness value is in the range of 0.2 to 1.5 gf cm 2 / cm in the vertical direction (tape length direction) and 0.2 to 0.6 g in the horizontal direction (tape width direction): It is preferable to be within the range of f cm 2 / cm because the amount of rise (drop) of the impermeable tape from the cable core can be suppressed to a considerable extent. Means for suppressing the amount of rise (fall) of the sheet base nonwoven fabric, the basis weight, the thickness of single yarn, the type of the water-absorbing composition, the presence or absence of embossing, etc. are effective. It seems to be.
  • Water-blocking tape has a rigidity value in the vertical direction and a rigidity value in the horizontal direction that are within the appropriate range. This prevents the tape from being pressed down due to the shrinkage of the sheath material, improving the cable wrapping workability and providing a good cable appearance to the market. Also wrapped around the cable Occasionally, a tape having good water-stopping properties without lifting the tape and producing a gap between the tapes or between the tape and the core is obtained.
  • Polyester type (Unitika tt «r Marix j) Polyester type « W (* ⁇ I « ⁇ « “ecoule j”) Unitika tt »sheet ⁇ « ⁇ DIMW “Marix j

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Laminated Bodies (AREA)
  • Insulated Conductors (AREA)
  • Sealing Material Composition (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

La présente invention concerne un ruban pour barrière d'arrêt d'eau, qui possède une rigidité adéquate et, par conséquent, peut être enroulé autour d'un câble de communications sans former de plis. La matière en question a une structure à deux couches comprenant un substrat en feuille et une couche de matière absorbant l'eau, dont le METSUKE (poids par mètre carré) est inférieur à 40 g/m?, ou une structure en sandwich composée de deux substrats en feuilles et d'une couche de matière absorbant l'eau, placée entre les deux feuilles, dont le METSUKE est inférieur à 40 g/m?. La rigidité longitudinale de la matière est comprise entre 0,2 et 1,5 gfcm?2¿/cm, sa rigidité transversale entre 0,2 et 0,6 gfcm2/cm.
PCT/JP1995/002561 1994-12-19 1995-12-13 Matiere a bas metsuke pour barriere d'arret d'eau, destinee aux cables de communications, et cable de communications l'utilisant WO1996019744A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019960704404A KR970701361A (ko) 1994-12-19 1995-12-13 저단위중량타입 통신케이블용 차수재 및 그것을 사용한 통신케이블(low-metsuke water-barrier material for communication cable and communication cable using it)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP6/334934 1994-12-19
JP6334934A JPH08170070A (ja) 1994-12-19 1994-12-19 低目付けタイプ通信ケーブル用遮水材およびそれを用いた通信ケーブル

Publications (1)

Publication Number Publication Date
WO1996019744A1 true WO1996019744A1 (fr) 1996-06-27

Family

ID=18282871

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP1995/002561 WO1996019744A1 (fr) 1994-12-19 1995-12-13 Matiere a bas metsuke pour barriere d'arret d'eau, destinee aux cables de communications, et cable de communications l'utilisant

Country Status (4)

Country Link
JP (1) JPH08170070A (fr)
KR (1) KR970701361A (fr)
CN (1) CN1141083A (fr)
WO (1) WO1996019744A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11293230A (ja) * 1998-04-08 1999-10-26 Yamauchi Corp 止水材及びその製造方法
JP3900918B2 (ja) 2001-12-10 2007-04-04 株式会社デンソー 圧電アクチュエータ
KR100974364B1 (ko) * 2008-04-08 2010-08-05 엘에스전선 주식회사 방수 성능이 향상된 광섬유 케이블 및 이에 이용되는방수테이프
CN102181157A (zh) * 2011-01-27 2011-09-14 江阴海达橡塑股份有限公司 挤出型热力盾构隧道管片硅橡胶止水带胶料的制备方法
CN107331454A (zh) * 2017-05-23 2017-11-07 芜湖航天特种电缆厂股份有限公司 星绞水面漂浮电缆

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56132705A (en) * 1980-03-21 1981-10-17 Showa Electric Wire & Cable Co Jellif filling cable
JPS587712A (ja) * 1981-07-03 1983-01-17 日立電線株式会社 走水防止型通信ケ−ブル
JPS62249117A (ja) * 1986-04-22 1987-10-30 Toppan Printing Co Ltd 光フアイバ−ケ−ブル
JPH04357623A (ja) * 1991-02-22 1992-12-10 Fukuoka Cloth Kogyo Kk 光ファイバケーブル用止水テープ

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56132705A (en) * 1980-03-21 1981-10-17 Showa Electric Wire & Cable Co Jellif filling cable
JPS587712A (ja) * 1981-07-03 1983-01-17 日立電線株式会社 走水防止型通信ケ−ブル
JPS62249117A (ja) * 1986-04-22 1987-10-30 Toppan Printing Co Ltd 光フアイバ−ケ−ブル
JPH04357623A (ja) * 1991-02-22 1992-12-10 Fukuoka Cloth Kogyo Kk 光ファイバケーブル用止水テープ

Also Published As

Publication number Publication date
CN1141083A (zh) 1997-01-22
KR970701361A (ko) 1997-03-17
JPH08170070A (ja) 1996-07-02

Similar Documents

Publication Publication Date Title
US6304701B1 (en) Dry fiber optic cable
US4815813A (en) Water resistant communications cable
CA1311023C (fr) Cable de communication a l'epreuve de l'eau
JP2726714B2 (ja) 通信ケーブル
US5930431A (en) Fiber optic cable
CA2943076C (fr) Gaine pour cable a fibre optique
US6899776B2 (en) Water blocking cable tape and methods for making same
AU644983B1 (en) Optical fiber cable which includes waterblocking and freeze preventing provisions
JPH0636621A (ja) 通信ケーブル
US20080219627A1 (en) Fiber optic cable with enhanced saltwater performance
US5146046A (en) Cable having waterblocking provisions between layers of relatively rigid and supple materials
JPH09152535A (ja) 止水テープ、およびこれを用いた光ファイバケーブル
WO1996019744A1 (fr) Matiere a bas metsuke pour barriere d'arret d'eau, destinee aux cables de communications, et cable de communications l'utilisant
JPH06243734A (ja) 光ファイバケーブル
JPH04212210A (ja) 通信ケーブル
WO1996018923A1 (fr) Materiau faisant obstacle a l'eau pour cables de transmission torsades en couches et cable de transmission utilisant ce materiau
JP2860551B2 (ja) ケーブル用導電性止水テープ
JP3055812B2 (ja) ケーブル用止水テープ
JPH05314825A (ja) 防水ケーブルおよびその製造方法
JPH08201669A (ja) 光ファイバーケーブル用止水テープおよびそれを用いた光ファイバーケーブル
JP3370126B2 (ja) 光ファイバケーブル用止水テープ
JP3529628B2 (ja) 光ケ一ブルの製造方法
WO1996027813A1 (fr) Materiau faisant barrage a l'eau pour cables
JPH06297628A (ja) 吸水性シート
JPH07306343A (ja) ケーブル用遮水材

Legal Events

Date Code Title Description
WWE Wipo information: entry into national phase

Ref document number: 95191672.6

Country of ref document: CN

AK Designated states

Kind code of ref document: A1

Designated state(s): CN KR US

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): AT BE CH DE DK ES FR GB GR IE IT LU MC NL PT SE

ENP Entry into the national phase

Ref document number: 1996 687517

Country of ref document: US

Date of ref document: 19960807

Kind code of ref document: A

121 Ep: the epo has been informed by wipo that ep was designated in this application
122 Ep: pct application non-entry in european phase