Step 1. Fiber and Material Checking Description OCE is committed to quality, before turning fiber to cable, the fiber is double checked using the ODTR. All data are recorded and compared with data supplied by supplier or inhouse fiber QC department. All fiber used are conform to ITU-T 652G for single mode or ITU-T 655G for multimode standard. Other material such as kevlar, PVC, Nylon, FRP and others are carefully checked against supplier's QC test certificates Step 2. Tight/Loose Buffering (Indoor Cable) Description The fiber is then tight or loose buffered using a SwissCAB coating line. There are various tight buffering construction used by OCE. The standard construction is the nylon tight buffer to 900 micron-meter. Other construction included additional UV cured acrylate coating to 400 micron meter in diameter, then tight buffered it to 900 micron meter with nylon. Another construction is to semi-loose-fitting buffer with two 250 micron meter UV coated fiber to 900 micron meter using nylon material. Step 3. Primary Jacketing Description The tight-buffered cable is then surrounded by Kevlar aramid yarn. This strength member adds mechanical strength. During and after installation, strength members provided crush resistance and handle the tensile stresses applied to the cable so that the fiber is not damaged. Then the PVC jacket is place on the cable. The jacket protect the cable against abrasion, oil, solvent and other contaminates. The outer diameter of the cable now is either 2mm or 3mm. SwissCab Cable Line If part of the cable may be outdoor, then more kevlar is put onto the cable, a PE jacket is put on for outdoor environment Step 4. Loose Tube (Outdoor) Description The common basic configuration for outdoor ducting or armour cable is loose tube. However we are able to produce other types of cable as per our customer requirement. The Loose tube basically means that the fibers are place in a loose tube of high module plastic, which is then filled with gel to prevent water form sweeping through. Each loose tube may contain 1 fiber up to 12 fibers and this is then sent to the next process, which is called the straining process Step 5. Straining Description The straining process is used to streamline multiple cord cables or loose tubing together, it is a delicate process and requires close supervision. The idea of this process is basically to allow end-users to dictate how many fiber or cords that the end-user requires to be in the cables, for example should a customer require 24 cords in one cable then 24 cords will be strained into one cable. In outdoor case, user may need 24 fibers in a cable, then either 2 tubing of 12 fibers count in each tubing, or 4 tubing of 6 fibers count in each tubing is stranded with filler. A central strength member is placed to prevent the cables from bending more than it is allowed. An outer plastic layer will be used to hold the cords or water blocking tape to hold tubing to for the next process, which is the Secondary Jacketing. Before jacketing, more layer of material may be added depending on the environment and needs. Step 6. Secondary Jacketing Description Once the number of cords has been identified and strained into one cable with plastic coating, then it is sent for the Secondary Jacketing. The process here is to place on the cables with an outer PVC jacket for protection. The outer jacket provides additional strength and support for the cable. The outer jacket also provides protection against natural, human and environmental contaminations. Step 7. Armouring Description Once the fiber has been jacketed according to customer requirement and should the customer required armouring it is then sent for the amouring process. The cable is then covered with a layer of corrugated steel to provide additional strength and crush resistance, it also prevent rodents from destroying the cable. Once the Armour is done it is then sent for the jacketing process again, in which the corrugated steel Armoured cable is covered with a layer of polyethylene sheath. The layer of polyethylene used is UV resistant. This gives the cable more strength, crush resistance and allow easy handling of the cables. Step 8. Quality Control Description After the optic fiber cable is made, samples are cut for destructive tensile, micro bending, impact, crush, tensile strength and many other tests according to test methods specified by IEC, EIA/TIA. Result are carefully recorded and kept for tracebility. QC test certificate is also issued with the product for delivery.
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