FIRE RETARDANT CABLE - CHASE CORP,US > 자유게시판

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Pat. No. 3,602,636. Basically, it makes use of an open weave glass fiber tape wrapped around the clustered conductors. Also, the glass cloth have to be dipped in weave set of chlorprene which acts as a primer prior to being coated with the barrier layer. Many of those drawbacks might be traced to the inclusion of the barrier layer which is calendered onto the glass cloth. A barrier layer in the form of a skim coat of flame-retardant unvulcanized polychloroprene is calendered on the glass cloth and eventually an outer jacket of synthetic rubber is extruded in place onto the tapered conductors and fused to the underlying barrier layer. Turning now to FIG. 2, tape 14 is comprised of a 20 × 10 open weave glass fiber cloth or scrim 22. A steady film 24 product of polyester, reminiscent of that bought beneath the tradename "Mylar," is bonded to the scrim using a relatively low viscosity fireplace-retardant plastic laminate adhesive 26. Suitable adhesive supplies embody acrylic, acrylic-polyvinyl chloride copolymers and polyurethane. Turning now to the drawing FIG. 1, a section of service entrance cable is proven usually at 10. Cable 10 is comprised of a cluster, herein three, of insulated stranded conductors 12. Special cable insulation tape 14 to be described presently is helically wrapped concerning the clustered conductors 12 with the adjoining turns of the tape overlapping each other.

Turning now to the drawing FIG. 1, a bit of service entrance cable is proven typically at 10. Cable 10 is comprised of a cluster, herein three, of insulated stranded conductors 12. Special cable insulation tape 14 to be described presently is helically wrapped concerning the clustered conductors 12 with the adjoining turns of the tape overlapping each other. Therefore, the thickness and, therefore, weight of the tape as an entire are lower than these of typical service entrance cable tape incorporating a natural or artificial rubber barrier layer which is calendered instantly onto the scrim. DC333 will develop quickly to be dense foams as a barrier to stop the fireplace unfold effectively. DC333 contents the special Veova latex resin, fire retardant cable nanometer inorganic supplies and water proofing agent which can affect the anti-mud on the floor of coating layers to take care of the characteristics of coating not be decomposed by water. INCA DC333 The expandable fireproof paint in water base for each inside and exterior. Applied as a primer to inside surfaces with normal paint as its prime coat. DC 333 could be prime coated with desired end latex paint to match décor.

This means that it is easier to handle and may be shipped at a lower value. That extra step, coupled with the truth that a full crew is required to calender the material onto the glass cloth, implies that the overall value of the prior cable is greater than want be. Therefore, the two layers are urged together with out the glass fibers within the scrim being cracked by extreme pressure. Secondly, the utilization of the comparatively low viscosity adhesive as the bonding agent offers a lubricant which seems to wick up between the person fibers in the scrim, thereby lowering the tendency of the fibers to abraid one another underneath stress. The utilization of the laminate adhesive additionally improves the fire-resistance characteristics of the cable. The present cable has several distinct benefits over its standard counterparts as exemplified by the cables described in the aforesaid patents. All of these elements make the current tape a highly successful industrial product whose attributes are additionally loved by the cable system into which the tape is integrated. The applying is for bundle cable, or cable bundle in tray in Industrial circumstances. First, whereas satisfying all the UL mechanical and electric checks for such cable, the present product is ligher in weight.

Exterior cable of this type should satisfy the stringent take a look at requirements of the Underwriters' Laboratories, Inc. For instance, service entrance cable, which is the cable which conducts electricity from overhead energy lines into a person's house, should move the UL 300 amp. It relates more particularly to fire-retardant insulation in sheet and tape form for cables which are exposed to the weather and which should be able to withstand tough utilization, e.g. a service entrance cable. The most prevalent kind of service entrance cable in use right now employs conductors wrapped with a layer of polyethylene terephthalate which is, in turn, surrounded by braided in situ fiber sheath impregnated and covered with asphalt and then lacquered. Fairly recently, one other type of cable has been launched which does not require the aforesaid braided sheath. While that kind of cable passes the required UL assessments and is an improvement over the prior braided cable in terms of cost, it nonetheless has certain drawbacks. The subject cable insulation also has a comparatively high tensile strength as compared with prior merchandise. Desirably, also, a filler 16 composed of asbestos fibers or different such materials is wrapped together with conductors 12 so that it fills the areas between the conductors, thereby giving the cable a cross part which is actually round.