CN1141083A - Low-metsuke water-barrier material for communication cable and communication cable using it - Google Patents
Low-metsuke water-barrier material for communication cable and communication cable using it Download PDFInfo
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- CN1141083A CN1141083A CN95191672A CN95191672A CN1141083A CN 1141083 A CN1141083 A CN 1141083A CN 95191672 A CN95191672 A CN 95191672A CN 95191672 A CN95191672 A CN 95191672A CN 1141083 A CN1141083 A CN 1141083A
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- telecommunication cable
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- 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
-
- 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
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Insulated Conductors (AREA)
- Laminated Bodies (AREA)
- Sealing Material Composition (AREA)
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Abstract
The invention provides to improve the wrapping workability of a water-barrier tape around a cable by optimizing the rigidity of the water-barrier tape and to give a wrapped cable having good appearance free from wrinkles. CONSTITUTION: This water-barrier material has a double-layer structure composed of a water-absorbing composition layer formed on a sheet substrate at an areal density of <=40g/m<2> or a sandwich structure containing a water- absorbing composition layer having an areal density of <=40g/m<2> and sandwiched between a pair of sheet substrates. The rigidity of the material is 0.2-1.5gfcm<2> / cm in longitudinal direction and 0.2-0.6gfcm<2> /cm in lateral direction.
Description
The present invention relates to the little waterproof material of adhesive capacity (water blocking tape) and with the telecommunication cable of its making, this waterproof material is used between the heart yearn of metallic cable and optical cable and the armoring material that the outside coats thereof, and purpose is waterproof.
In recent years, telecommunication cable and optical cable (optical fiber cable), the particularly fault of optical cable, nearly all optical cable is interior to be caused owing to moisture is invaded.Moisture is invaded the problem that is caused: fiber strength reduces, and the moisture freezes compressing optical fiber of perhaps invading destroys light-transfer characteristic etc.
Therefore, adopt the waterproof material of such specific character, it can prevent in the moisture intrusion optical cable, even moisture is invaded the length that also can shorten invasion.This material is commonly referred to as water blocking tape, waterstop or water sucting belt etc.For example, open flat 1-207377 communique the spy, the spy opens in flat 1-240547 communique etc., proposed on the thin slice base material, to be provided with 2 layers of structurally waterproof material of the material rete of water absorptivity composition; On the other hand, open the 3-tier architecture waterproof material that flat 3-224729 communique, spy are opened one deck drop cloth (the Cover Cloth) that fit again on the material rete that has proposed in flat 4-357623 communique etc. at this water absorptivity composition the spy.
But the past people have known that the picture spy opens the waterproof material that flat 1-304145 communique is delivered.This waterproof material is to form like this, be sodium (Natrium) promptly with the carboxyl (Carboxylgroup) in the cross-linking agent of the multipolymer of isobutylene (isobutylene) and maleic anhydride (Maleic anhydride), potassium (Kalium), lithium (lithum), alkali (alkali) slaine of ammonium (ammonium) etc. or hinge salt, wherein sneak into the compound that comprises epoxy (epoxy) base, the crosslinking chemical of the compound of ammonia (amino) base and urea melamine (ureamelamine) resin etc., heat, form crosslinked thawless water-absorbing body aqueous solution, this aqueous solution is adhered to remain on the thin slice base material as support.
Perhaps, utilize bonding agent that above-mentioned alkali metal salts or ammonium salt is sticked on the thin slice base material as support.These waterproof materials, when the thin slice base material as support is film like, laminar cloth and silk, adhesive-bonded fabric etc., these adhesive-bonded fabrics etc. are flooded in water-absorbing body solution, then, utilize rivet bucker processing such as extrude, the water absorptivity constituent that makes ormal weight is attached on the thin slice base material.Utilize this waterproof material, can reach, the water-intake rate of artificial seawater is calculated as more than 3 times by the CB method, water absorptivity is very good.
On the other hand, people have understood the telecommunication cable that the spy opens flat 6-203647 communique issue.This telecommunication cable, its surface structure as shown in Figure 6, heart yearn 64 is by many eradication edge plain conductors 62,62 ... be bundled into pencil, promptly utilize binding 66 that heart yearn 64 is stopped up, utilizing the heart yearn foreskin again is that plastic foil 68 encases.In this case, at the plain conductor 62,62 of heart yearn 64 ... the gel of filling oil lipid and polybutylene (poly-butene) in the mutual gap utilizes heart yearn foreskin 68 to prevent that the compaction material gel is to external leakage.And, around this heart yearn foreskin 68, wrap the corrugated metal coating material of making by aluminium (Al) or stainless steel (SUS) foil 70, further bag one deck armoring material 72 on its cylindrical.And between heart yearn foreskin 68 and metal coating material 70, perhaps between metal coating material 70 and armoring material 72, also filling is the gel stuff of principal ingredient with extender (extender) oil, so that have water proofing property.
Yet, the telecommunication cable waterproof material (water blocking tape) that this past is general, rigidity is mostly higher.Therefore, when being wound into this water blocking tape on the cable, water blocking tape can stick up, and can not match with cable core.And,, then wish to be used between the heart yearn foreskin of telecommunication cable and the metal coating material or between metal coating material and the armoring material if will use it on the telecommunication cable that above-mentioned spy opens the form shown in the flat 6-203647 communique.But, when in fact on probation, owing to the too high problem that causes the water proofing property difference of water blocking tape rigidity.
On the other hand, under the situation low in waterproof material (water blocking tape) rigidity, that material is soft, when on cable, twining if do not improve the tension force of water blocking tape, then be easy to generate gauffer, and when coating armoring material, make the water blocking tape power that is squeezed owing to this armoring material shrinks, destroy the outward appearance of telecommunication cable.
The present invention is just in order to address the above problem, its purpose is, avoid when on cable, twining, perk or depressed phenomenon occurring by the best rigid scope of selecting waterproof material (water blocking tape), improve the cable outward appearance and be convenient to water blocking tape and twine, improve water resistance simultaneously.Moreover; the present invention considers; above-mentioned spy opens the telecommunication cable of form shown in the flat 6-203647 communique; to wrapping between the cable core heart yearn foreskin and metal coating material on every side; perhaps the requirement of the fire resistance characteristic between metal coating material and the armoring material is very not high, so a kind of telecommunication cable waterproof material that is fit to the so-called adhesive capacity few (adhesive capacity of water absorptivity component substances on unit area is less) of this purposes is provided.
In order to achieve the above object, the telecommunication cable waterproof material that adhesive capacity of the present invention is few, its 1st kind is that the formation adhesive capacity is 40 gram/rice on the flat substrates surface
2Following water absorptivity constituent rete, the values of stiffness of this waterproof material is 0.2-1.5gfcm in the vertical
2/ cm (gram force centimetre
2/ centimetre), and be 0.2-0.6gfcm in the horizontal
2/ cm.
Moreover telecommunication cable of the present invention with the 2nd kind of its main points of waterproof material is: clamping one deck adhesive capacity is 40 gram/rice between a pair of flat substrates
2Following water absorptivity component substances rete forms sandwich construction, and the values of stiffness of this waterproof material is 0.2-1.5gfcm in the vertical
2/ cm; And be 0.2-0.6gfcm in the horizontal
2/ cm.
This flat substrates is: adhesive-bonded fabric, fabric or knitted fabrics etc. such as dacron, polyamide fibre, polypropylene (Polypropylene) fiber, polyethylene fibre, polyacrylate (Polyacryl) fiber, regenerated fiber (rayon), vinylon (Vinylon) fiber.Also can be any two kinds of synthon that combine in the above-mentioned synthon.
Moreover water absorptivity component substances rete is formulated by following material: adjuvants such as water-absorbing polymeric particles, organic bond, surfactant, anti-oxidant aging agent, inorganic filler.Wherein, water-absorbing polymeric particles has: the crosslinked body of polypropylene soda acid, starch-propylene (acid) be the corrective, cross-linking polyvinyl alcohol (polyvinyl alcohol) sex change thing, cross-linked isobutylene (isobutylene)-anhydrous maleic acid interpolymer, the crosslinked body of polyethylene oxide (polyethylene oxide), acrylamide (acrylamide)-acrylic acid crosslinked polymer etc. of graft polymerization body (graft).
This water-absorbing polymeric particles should scatter when contacting with water, splits away off from flat substrates.Its particle shape and particle diameter are not particularly limited, and particle shape can be positive circle, also can be oblate.And, particle diameter preferably in the scope of 45-425 μ m, i.e. its size otherwise reduce imbibition speed and do not reduce the falling speed of particle from the flat substrates.In addition, in order not influence the water proofing property of minim gaps such as optical cable crack, preferably contain the following granule of 45 μ m of a certain amount of (about more than 5%) in the particulate material.And these water-absorbing polymeric particles can be used alone, and also can mix use two or more.
Moreover organic bond mainly contains rubber type of material and thermoplastic elastomer (elastomer) synthetic resin material.Rubber type of material has: styrene-butadiene (styrene-butadiene) rubber, butyl (butyl) rubber, butadiene rubber, isoprene (isoprene) rubber, ethylene-propylene (ethylene propylene) rubber, chlorosulfonated polyethylene (chlorosulfonated polyethylene) rubber, silicon rubber, neoprene (chloroprene) rubber, polyurethane (polyurethane) rubber, propylene (acryl) rubber, chlorinated butyl (chlorinated butyl) rubber, epichlorokydrin (epichlorohydrin) rubber etc.
Moreover thermoplastic elastomer synthetic resin material has: ethene-vinyl acetate (ethylene succinic acid vinyl) interpolymer, ethylene propylene copolymer, butyronitrile-butadiene (acrylonitrile-butaliene) interpolymer, styrene-butadiene (Styrene-butadiene) interpolymer, vibrin, polyamide (polyamide) resin, polycarbamate (urethane) resin and other thermoplastic elastomer class materials.Organic bond also can use these elastomeric materials and synthetic resin material separately, also can in addition, also can mix use to the two or more uses that combine to the material of atactic polymerization.
And, the of the present invention the 3rd and the 4th kind, be equivalent to the purposes invention of the invention of above-mentioned the 1st kind and the 2nd kind.Wherein, a kind of main points are: in telecommunication cable; the communication wire harness that forms gathering together and on the water proofing property gelling material between each order wire by many order wires; film is tied up in winding; twine the metal coating sheet in this outside of tying up film, further coat armoring material again outside.Water blocking tape is tied up between film and the metal coating sheet or between metal coating sheet and the armoring material, this water blocking tape has adhesive capacity on the surface of flat substrates be 40 gram/rice above-mentioned
2Following water absorptivity component substances rete, and the values of stiffness of this water blocking tape itself is 0.2-1.5gfcm in the vertical
2/ cm is 0.2-0.6gfcm in the horizontal
2/Cm.
The main points of another are: in telecommunication cable; the communication wire harness that forms gathering and on the water proofing property gelling material between each order wire by many order wires; film is tied up in winding, twines the metal coating sheet in the outside of tying up film, and the outside coats armoring material again.Water blocking tape places above-mentionedly to be tied up between film and the metal coating sheet or between metal coating sheet and the armoring material, this water blocking tape is sandwich construction, and having one deck adhesive capacity between a pair of flat substrates is 40 gram/rice
2Following water absorptivity component substances rete, and the values of stiffness of this water blocking tape itself is 0.2-1.5gfcm in the vertical
2/ cm is 0.2-0.6gfcm in the horizontal
2/ cm.
Therefore, requirement of the present invention is: no matter the rigidity of this water-barrier material for cables (water blocking tape) is to be under the 2 layers of structure or the situation of sandwich construction, vertically goes up (belt length direction) 0.2-1.5gfcm
2/ cm, transversely (bandwidth direction) 0.2-0.6gfcm
2/ cm.And therefore, if base material on chip is the polyesters adhesive-bonded fabric, the weight that then requires its adhesive-bonded fabric when 2 layers of structure is 25-70 gram/rice
2, the weight of its adhesive-bonded fabric is 5-20 gram/rice when sandwich construction
2
When there being any one when undesirable, in vertical rigidity of this waterproof material and the lateral stiffness for example if vertically values of stiffness is greater than 1.5gfcm
2/ cm, perhaps lateral stiffness is greater than 0.6gfcm
2/ cm, then water blocking tape meeting perk when being wound into waterproof material (water blocking tape) on the cable can produce the gap between band and the band and between band and the heart yearn, influences water resistance.
On the other hand, if vertically values of stiffness is less than 0.2gfcm
2/ cm or lateral stiffness value are less than 0.2gfcm
2/ cm, then when being wound on the cable, can produce gauffer on the belt to water blocking tape, and when coating armoring material outside because armoring material shrinks, in belt is squeezed into, influence the cable outward appearance.
Fig. 1 is the outward appearance oblique view according to telecommunication cable of the present invention.
Fig. 2 is a skeleton diagram, and it is expressed as the major part of checking values of stiffness experiment with measuring (KES method) equipment of confirming effect of the present invention and adopting.
Fig. 3 illustrates and checks the method for confirming that effect of the present invention adopted, promptly measures the amount of recess of waterproof material sheet to the cable core direction.
Fig. 4 represents perk shown in Figure 3 (depression) measurement amount content from the front.
Fig. 5 is the oblique view of the water proofing property measuring equipment of L font.
Fig. 6 is the outward appearance oblique view of the general telecommunication cable that has earlier.
Describe embodiments of the invention below in detail.
At first, represent to use the primary structure of telecommunication cable of the present invention and describe by Fig. 1.Telecommunication cable 10 shown in Figure 1, many copper cash 12,12 ... band together as cable core 14, utilize tie string 16 that this cable core 14 is stopped up, then, utilization is poly-carries out looping to benzene to formic acid glycol ester (PET:polyethylene terephthalate) foreskin film 18.And, around this foreskin film 18, twine water blocking tape 20, its outside utilizes the corrugated sheet metal coating material 22 of aluminium foil, stainless steel foil to coat again, further coats armoring material 24 again on its cylindrical.In the case, at the copper cash 12,12 of cable core 14 ... between the space in the gelling material (not shown) of filling oil lipid or polybutylene class, just in case moisture is when invading in this cable core 14, this jelly can stop moisture to be invaded.Foreskin film 18 can prevent that this jelly is to external leakage.Kind and test findings thereof that the various samples of product are used in the table 1 expression product of the present invention of back and contrast.
In the table 1, sample 1-5 is illustrated in the waterproof material (water blocking tape) of 2 layers of structure of the material rete of making the water absorptivity composition on the flat substrates, in addition, sample 6-10 represents the waterproof material (water blocking tape) of sandwich construction, its surface and the back side are flat substrates, the material rete of clamping one layer absorbent composition in the middle of it.Moreover in 2 layers of constructed products of sample 1-5, sample 1 and 2 is that to use product, sample 3-5 be product of the present invention in contrast.In addition, in the product of the sandwich construction of sample 6-10, sample 6 and 7 is that to use sample, sample 8-10 be product of the present invention in contrast.Moreover, sample 11 expression immersion-type waterproof materials (water blocking tape), it is that the spy opens the material that flat 1-304145 communique is delivered, and is used to illustrate prior art.
Like this, the flat substrates of the waterproof material of various sample 1-11 all adopts spunbonded type (non-woven) fabric (spunbond nonwoven fabrics) of polyester.And, the product of sample 1-5 (2 layers of structure), also oneself illustrates in the table 1, adopts the trade name " Marix 70xxxWTO " of Unichica company; The product of sample 6-10 (sandwich construction) adopts the trade name " ecure " of Japan's textile company.In addition, the product of sample 1-5 (2 layers of structure), thin (fibre) degree of polyester single thread is 2 daniers (denier), its adhesive-bonded fabric weight is at 20-80g/m
2The number of partitions retaining is selected in the scope.
Moreover, the product of sample 6-10 (sandwich construction), the fineness of monofilament polyester also is 2 daniers, its adhesive-bonded fabric weight is at 10-30g/m
2More among a small circle in number of partitions retaining select.
On the other hand, the water absorptivity component substances, as shown in table 2, be divided into 2 kinds of component prescription test methods.In the following description, measurement unit " part " all represents " part of weight ".
The water absorptivity component substances of No.1 and N0.2 in table 2, all with to as 150 parts of the water-absorbing resins aggressiveness things (trade name of Kulare company " KI gel 201K-F3 ") of the crosslinked body of slaine of isobutylene-Malaysia (isobutylene-Malein) acid copolymer, mix 100 parts of organic bonds, as basis.In the case, to the water absorptivity component substances of No.1, mix s-B-S (Styrene-butadiene-styrene:SBS) thermoplastic elastomer (elastomer) (trade name of Shell company " CaliflexTR-1101 ") as organic bond.On the other hand, for No.2 water absorptivity component substances, mix butyl rubber (butylgom) (trade name of ESSO company " ESSO BUTYL#268 ") as organic bond.In these component substances, mix 4 parts in polyglycol (polyethylene glycol) (trade name of Nof Corp. " PEG600 ") surfactant as adjuvant.The water absorptivity component substances of No.1 and the water absorptivity component substances of No.2 compare, and experimental results show that by various: because the kind difference of organic bond, when adopting the water absorptivity component substances of No.1, the rigidity of waterproof material (water blocking tape) is higher.
Various sample 1-10 adopt any water absorptivity component substances respectively, all are shown in the table 1.And the adhesion amount of its water absorptivity component substances also is shown in the table 1 in the lump.The sample 1-5 of 2 layers of structure adopts No.1 water absorptivity component substances, and its adhesion amount is a certain value, i.e. 20 gram/rice 2.In addition, the sample 6-10 of sandwich construction adopts No.2 water absorptivity component substances, and its adhesion amount is a certain value, i.e. 30 gram/rice
2
These waterproof materials (water blocking tape), utilize stirring machine to stir, make above-mentioned organic bond dissolving, be distributed in the organic solvents such as toluene (toluene), MEK (methyl ethylketone), vinyl acetate, then, mix water-absorbing polymeric particles again, and, mix other adjuvants as required again.Then, utilize excellent coating (barcoater), roll coater (rollcoater) etc. that it is coated on the surface of flat substrates, form water absorptivity component substances rete.Under the situation of the waterproof material (water blocking tape) of sandwich construction, on the surface of this water absorptivity material rete, paste flat substrates in addition, make the water blocking tape of regulation.
In addition, the immersion-type water blocking tape of the sample 11 of example as a comparison, concrete method for making is: as the water-absorbing resins component substances, the A liquid and the B liquid of " the KI gel solution system " of Clure company (principal ingredient is the crosslinked body of isobutylene (iosbutylene)-maleic acid slaine), according to 100 parts: 20 parts ratio is mixed, dipping flat substrates adhesive-bonded fabric in this mixed liquor, squeeze liquid with ironer etc. then, make to keep a certain amount of water-absorbing resins component substances on the flat substrates.Flat substrates adopts adhesive-bonded fabric (trade name of Unichica company " Marix 70400 WTO "), fineness 2 daniers of monofilament polyester, the adhesive-bonded fabric weight 40 gram/rice of polyesters spunbonded type (non-woven) fabric
2And the adhesion amount of water absorptivity component substances is 20 gram/rice
2
The following describes various test findings.Pilot project has: the rigidity of waterproof material (vertical and horizontal), from the cable core perk (depression) characteristic, water proofing property (L type), measure by following method respectively.
(1) rigidity
Each sample 1-11 all is clamped between the fixed chuck 32 and active chuck 34 of test unit shown in Figure 2 (its spacing is 1cm), and the sample 20 among the figure is long 20cm * more than the wide 1cm.And, be the center with the fixed chuck, make active chuck at curvature K=-2.5～+ 2.5 (cm
-1) scope in rotate to direction, and then, make sample flexural deformation to counter-rotation, come the bending stiffness (unit: gfcm of measuring unit's length with this
2/ cm), this method is called the KES method.In order to measure vertical rigidity and lateral stiffness, provide the vertical cutting sample and the horizontal cutting sample of the belt of waterproof material (water blocking tape).
(2) perk (depression) performance test
As shown in Figure 3,3 of the poles of φ 20mm are banded together,,, on the end of this water blocking tape 20, add 5 kilograms loading during winding Yi Bian around it, twine the water blocking tape 20 of bandwidth 40mm Yi Bian add loading.And, at this moment as shown in Figure 4, if the rigidity height of water blocking tape 20, then water blocking tape 20 is upturned from the height and position of the pole of dummycable heart yearn, therefore, measures this perk amount, if the rigidity of water blocking tape 20 is low, then water blocking tape 20 to lower recess, therefore, is measured this amount of recess from the height and position of pole.Perk (depression) amount is qualified (0 mark) in the scope of ± 2mm.
(3) L font water proofing property
The method of testing of L font water proofing property is: cable cutting, water is invaded with external force inwards from the section of cable, at this moment, check the ability that prevents water intrusion on cable is vertical.This test unit is wound into sample water blocking tape 20 on the sticking plaster 50 of external diameter φ 10mm as shown in Figure 5, is inserted into the glass tube 52 interior (gap between sticking plaster and the glass tube is 0.6mm) of internal diameter φ 11.1mm then, constitutes dummycable 54 with this.And the end at this dummycable 54 is installed feed pipe 56, in this feed pipe 56, pour into 1 meter high fresh water post, the leading (not shown) of under this state, fetching boiling water, water is injected in the cable 54, after 24 hours, enter the seepage of water that cable 54 interior length are judged the L word direction according to this fresh water.
When test check, at first check the sample 1-5 of 2 layers of structure, found that: the sample 1 of comparative product, the perk amount is excessive, L font water proofing property defective (X mark); And sample 2 amount of recess are excessive, winding process defective (X mark).In contrast, the test findings of sample 3-5 of the present invention is well, i.e. perk (depression) amount is little, and winding process and L font water proofing property be all good (0 mark) also.
Moreover, test findings to the sample 6-10 of sandwich construction is: the sample 6 and 7 of comparative product, the perk amount is excessive, L font water proofing property defective (X mark), and that the sample 8-10 of product of the present invention is is qualified, be that perk (depression) amount is little, winding process, L font water proofing property is all good (0 mark) also.
In addition, the sample 11 of comparative product also is that the perk amount is excessive, L font water proofing property defective (X mark).
From above-mentioned test findings as can be seen: in each sample 1-11, the perk amount is big, underproof sample 1,6,7 of L font water proofing property and 11 (being comparative product), values of stiffness, particularly vertically the values of stiffness of (belt length direction) is big.Amount of recess is big in addition, and 2 on the underproof sample of winding process is opposite, and values of stiffness is all less on vertical and horizontal.And from this result as can be seen: values of stiffness is 0.2-1.5gfcm in vertical (belt length direction)
2/Cm, and laterally be 0.2-0.6gfcm on (bandwidth direction)
2/ cm.This helps to control water blocking tape very much measures from the perk (depression) on the cable core, can be described as more satisfactory state.And the method for controlling this perk (depression) amount is to take following several effective measures: the having or not etc. of the kind of the material of flat substrates adhesive-bonded fabric, adhesive capacity, monofilament thickness, water absorptivity component substances and roll compacting processing.
The present invention also tests other various embodiment (sample).But be not limited only to the foregoing description, in the scope that does not break away from aim of the present invention, the present invention can carry out various improvement and change.
As described in above-mentioned embodiment, water-barrier material for cables of the present invention (water blocking tape), scope by vertical values of stiffness of suitable control and lateral stiffness value, can prevent from when its strip winding as telecommunication cable is used, to produce gauffer on the belt, thereby when coating armoring material since the armoring material contraction take-up strap is pressed into and influences the cable outward appearance, so can improve the cable winding process, help simultaneously providing presentation quality also very good cable to market.And belt the perk phenomenon can not occur when twining on cable, can not produce the gap between belt and the belt and between belt and the heart yearn, thereby have excellent waterproofness.
Table 1
Table 2
Claims (8)
1. the telecommunication cable waterproof material that the absorbent material adhesive capacity is little is characterized in that, forming adhesive capacity on the surface of flat substrates is 40 gram/rice
2Following water absorptivity component substances rete is made the telecommunication cable waterproof material that hangs down adhesive capacity, and the values of stiffness of this waterproof material is 0.2-1.5gfcm in the vertical
2/ cm is 0.2-0.6gfcm in the horizontal
2/ cm.
2. the little telecommunication cable waterproof material of the described adhesive capacity of claim 1, it is further characterized in that above-mentioned substrate material is the polyesters adhesive-bonded fabric, the weight of this adhesive-bonded fabric is 25-70 gram/m
2
3. telecommunication cable; it is characterized in that the communication wire harness that forms being gathered by many order wires and on the water proofing property gelling material between each order wire twines and ties up film; twine the metal coating sheet in the outside of tying up film, the outside coats armoring material again.In such cable, water blocking tape is tied up between film and the metal coating sheet above-mentioned, perhaps between metal coating sheet and armoring material, and this water blocking tape, having one deck adhesive capacity on the flat substrates surface is 40 gram/rice
2Following water absorptivity component substances rete, and the values of stiffness of this water blocking tape itself is 0.2-1.5gfcm in the vertical
2/ cm; Be 0.2-0.6gfcm in the horizontal
2/ cm.
4. telecommunication cable as claimed in claim 3, it is further characterized in that above-mentioned flat substrates is the polyesters adhesive-bonded fabric, the weight of this adhesive-bonded fabric is 25-70 gram/rice
2
5. the telecommunication cable waterproof material that adhesive capacity is little is characterized in that, clamping one deck adhesive capacity is 40 gram/rice between a pair of flat substrates
2Following water absorptivity component substances rete forms sandwich construction, and this is the little telecommunication cable waterproof material of adhesive capacity, and its values of stiffness is 0.2-1.5gfcm in the vertical
2/ cm; Be 0.2-0.6gfcm in the horizontal
2/ cm.
6. the telecommunication cable waterproof material that adhesive capacity as claimed in claim 5 is little is characterized in that, above-mentioned each flat substrates is the polyesters adhesive-bonded fabric, and the weight of the adhesive-bonded fabric of its flat substrates is 5-20 gram/rice
2
7. a telecommunication cable is characterized in that, at the communication wire harness that is formed by many order wire set with on the water proofing property gelling material between each order wire; film is tied up in winding; tie up the outside of film at this, twine the metal coating sheet, the outside coats armoring material again.The cable of making like this, water blocking tape is tied up between film and the metal coating sheet above-mentioned, perhaps between metal coating sheet and armoring material.This waterproof material is a sandwich construction, and it is 40 gram/rice that one deck adhesive capacity is arranged between a pair of flat substrates
2Following water absorptivity component substances rete, and the values of stiffness of this water blocking tape itself are 0.2-1.5gfcm in the vertical
2/ cm is 0.2-0.6gfcm in the horizontal
2/ cm.
8. telecommunication cable as claimed in claim 7 is characterized in that, above-mentioned each flat substrates is the polyesters adhesive-bonded fabric, and the weight of the adhesive-bonded fabric of each flat substrates is 5-20 gram/rice
2
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP334934/94 | 1994-12-19 | ||
| JP6334934A JPH08170070A (en) | 1994-12-19 | 1994-12-19 | Low areal density-type water-barrier material for communication cable and communication cable produced by using the material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1141083A true CN1141083A (en) | 1997-01-22 |
Family
ID=18282871
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN95191672A Pending CN1141083A (en) | 1994-12-19 | 1995-12-13 | Low-metsuke water-barrier material for communication cable and communication cable using it |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JPH08170070A (en) |
| KR (1) | KR970701361A (en) |
| CN (1) | CN1141083A (en) |
| WO (1) | WO1996019744A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107331454A (en) * | 2017-05-23 | 2017-11-07 | 芜湖航天特种电缆厂股份有限公司 | Star quad stranding floating on water cable |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11293230A (en) * | 1998-04-08 | 1999-10-26 | Yamauchi Corp | Water stop material and its production |
| JP3900918B2 (en) | 2001-12-10 | 2007-04-04 | 株式会社デンソー | Piezoelectric actuator |
| KR100974364B1 (en) * | 2008-04-08 | 2010-08-05 | 엘에스전선 주식회사 | Optical fiber cable for improving waterproof performance and waterproof tape used of it |
| CN102181157A (en) * | 2011-01-27 | 2011-09-14 | 江阴海达橡塑股份有限公司 | Preparation method of extruded thermodynamic shield tunnel duct piece silicon rubber water stop rubber |
Family Cites Families (4)
| 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 (en) * | 1981-07-03 | 1983-01-17 | 日立電線株式会社 | Water feed preventive type communication cable |
| JPS62249117A (en) * | 1986-04-22 | 1987-10-30 | Toppan Printing Co Ltd | Optical fiber cable |
| JP3055808B2 (en) * | 1991-02-22 | 2000-06-26 | 福岡クロス工業株式会社 | Waterproof tape for optical fiber cable |
-
1994
- 1994-12-19 JP JP6334934A patent/JPH08170070A/en active Pending
-
1995
- 1995-12-13 KR KR1019960704404A patent/KR970701361A/en not_active Application Discontinuation
- 1995-12-13 WO PCT/JP1995/002561 patent/WO1996019744A1/en active Application Filing
- 1995-12-13 CN CN95191672A patent/CN1141083A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107331454A (en) * | 2017-05-23 | 2017-11-07 | 芜湖航天特种电缆厂股份有限公司 | Star quad stranding floating on water cable |
Also Published As
| Publication number | Publication date |
|---|---|
| WO1996019744A1 (en) | 1996-06-27 |
| JPH08170070A (en) | 1996-07-02 |
| KR970701361A (en) | 1997-03-17 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |