Tight Buffer Fiber Extruding Line

Tight Buffer Fiber Extruding Line

  • Payment Terms T/T, L/C, D/P, etc.
  • Delivery Time 90 days
  • Place of Origin China
  • Port of Loading Shanghai, China
  • Shipping By sea
  • HS Code 8479400000
  • Container Load
  • Warranty Period 12 months

Product Details

Main Components

Commercial Parts


Product Details

1. Introduction

The tight buffer fiber has the characteristics of softness, easy stripping, small bending radius, excellent mechanical and environmental performance, etc. It is currently mainly used for short-distance and medium-distance wiring in indoor environments. The so-called tight buffer fiber is a process of directly squeezing a suitable plastic tight-pack buffer layer outside the coating layer of the optical fiber in order to protect the optical fiber from external influences. The production equipment used is the tight buffer fiber extruding line.
We have many years of experience in research and development and manufacturing of optical fiber and cable production equipment. The tight buffer fiber extruding line is suitable for the extrusion of PVC, LSZH, and Nylon materials, and can produce single-core tightly wrapped optical fibers with outer diameters of 0.6mm and 0.9mm. The production line has the characteristics of precise tension, easy operation, fast production speed and stable performance.
The whole machine of this production line adopts the control technology combining industrial computer and programmable logic controller, namely PC + PLC mode to realize the synchronous operation of the whole line and the independent operation of the single machine; the operation of the production line, the setting and display of parameters, etc. are all carried out by industrial control computer, the production control process such as motor start, stop, signal given, motor speed and other production status collection are realized by PLC; data transmission between industrial control computer and PLC through the communication port; it can realize the functions of production operation, alarm display, and emergency stop of the production line.

2. Main Technical Parameters



Applicable extrusion material

PVC, LSZH, Nylon

Structure speed(m/min)


Production speed(m/min)


Fiber diameter(mm)


Tight buffer fiber diameter(mm)


Number of pay-off bobbins


Pay-off bobbin

25km, 50km international general fiber optic bobbin

Take-up bobbin(mm)


Additional fiber loss(dB/km)


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    Main Components

    The equipment is mainly composed of optical fiber pay-off device, optical fiber preheating and drying device, extrusion unit, cooling system (4m warm water tank, warm water tank, 12m cold water tank, cold water tank), blow dryer, biaxial diameter gauge, wheeled traction device, take-up device and electric control system.

    1. Optical Fiber Pay-off Device

    Optical Fiber Pay-off DeviceThe optical fiber pay-off device adopts cabinet structure and contains 2 optical fiber pay-off shafts, which are suitable for 25km and 50km international general-purpose optical fiber bobbins.
    Adopt active pay-off mode, driven by AC motor. The pay-off tension is adjusted by the swing of the tension dancer, which can make the fiber pay-off tension range 0.4N ~ 1.2N ± 0.05N, with high tension control accuracy; the maximum pay-off speed can reach up to 300m / min. This optical fiber pay-off device can ensure the stable and reliable operation of high-speed optical fiber pay-off.

    2. Optical Fiber Preheating and Drying Device

    Optical Fiber Preheating and Drying DeviceThe device adopts infrared heating tube heating method. The device can directly heat the surface of the optical fiber, dry the optical fiber, and directly evaporate the moisture on the surface of the optical fiber. The preheating temperature can be adjusted easily within the range of 100 ~ 300℃. The application of the device can improve the adhesion between the surface of the optical fiber and the tight packaging material.

    3. Extruder Unit

    Extruder UnitIt adopts SJ30 × 25 type extruder and BM type screw, which is suitable for the extrusion of PVC, LSZH and Nylon materials. The extrusion volume is stable and uniform, with high control accuracy and reliability.
    The extruder is equipped with a high-precision self-centering head to ensure good concentricity of the product. At the same time, the extrusion unit is equipped with a vacuum feeder, a dryer and a masterbatch mixer, and the proportion of masterbatch can be set and controlled.

    4. Take-up Device

    Take-up DeviceThe device adopts dual automatic switching take-up with cantilever structure, and is suitable for PN400-type bobbins. The success rate of the bobbin switching is high and the cutting length is accurate. The traversing pitch has high precision and is continuously adjustable. The loading method is top-notch, and the operation is simple and convenient. 

    Commercial Parts

    1. PLC adopts Siemens brand;
    2. The inverter adopts Siemens brand;
    3. The main low-voltage electrical appliances adopt Siemens brand;
    4. The AC servo motor adopts Panasonic brand;
    5. The temperature control instrument adopts Omron brand.


    Q: Can I visit your factory?

    A: All the customers from both home and abroad are warmly welcomed to visit our company and factory.

    Q: Do you supply the installation and commissioning?
    A: Yes, we do as followings:
    -As soon as customer informed us the machines are put in the right place, we will send both mechanical and electrical engineer for machine start up.
    -No-load testing: After machine installed completely, we make no-load testing first.
    -With-load testing: Usually we will can produce 3 different wires to make load testing.

    -Acceptance report: After the buyer confirms that machine can reach all specification under contract, the acceptance report will be signed for our record that machine will be in guarantee period.

    Q: What information should I offer to get a detailed quotation from you?
    A: For single machine: Usually we need to know inlet wire size, outlet wire size to be produced, productivity, pay off and take up size to choose the right machine.
    For new cable plant or new cable production line, we need to know the datasheet of cables to be produced, the productivity, the standards to be followed, etc to design all machines needed.

    Q: Can you supply the auxiliary equipment along with the machines?
    A: Yes, definitely.
    We has supplied heat exchanger, copper/aluminum powder filter machine, cooling tower, chiller, air compressor, drawing dies, pointing machine, cold welders, bobbins etc. with our machines.

    Q: Could you do the design for the whole plant?
    A: Yes, this is our advantage.
    With the data sheet of cable to be produced, the standard your cables should follows, the productivity you expected. Our engineer on production technology and machinery will make design of production machines, test equipment, accessories like bobbins, dies, rewinding lines and materials needed.

    Q: How can I know the status of my order?
    A: We have our OA system on tracking the production.
    For any of your request we can send photos and videos of your order, also we can use FACETIME to let you know the production.

    Q: How do you work on the inspection before delivery?
    A: We will make dynamic balance testing, levelness testing, noise testing, etc. during production.
    After production finished, usually we make no-load running of each machine before delivery. Customers are welcomed to attend the inspection.

    Q: What exhibitions will you attend, can we meet in the fair?
    A: Dusseldorf International Wire and Cable Fair;
    Wire South America Fair;
    International Wire and Cable Fair in Shanghai;
    International Istanbul Wire Fair, etc.
    wire Southeast Asia Fair, etc.

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