• Sourcing Solutions
  • Services & Membership
  • Help & Community

Quick Details

  • Condition: New
  • Application: Film, PE
  • Plastic Processed: PE
  • Blow Moulding Type: Extrusion Blow Moulding
  • Automatic: Yes
  • Place of Origin: Guangdong, China (Mainland)
  • Brand Name: HARDEN, Hartek
  • Model Number: HTBS-20
  • Voltage: 380V/50Hz/3 phases, or as per request
  • Power(W): 8KW
  • Dimension(L*W*H): 2600mmx1130mmx2300mm
  • Weight: 1500kg
  • Certification: CE SGS
  • Warranty: 12 Months
  • After-sales Service Provided: Engineers available to service machinery overseas
  • Maximum output: 3.5kg/h
  • Color: metal silver or organge

Packaging & Delivery

Packaging Details 1) Standard fumigation-free plywood packaging.
2) Package:
L (mm) W (mm) H (mm) Weight (kg)
Lab Precise Single Screw Extruder 1960 1130 1830 730
Lab Precise Film Blown Machine 1320 1040 2430 250
Delivery Time 60 days


Product  Features:
  • Specially manufactured screw and barrel to guarantee precision and quality

  • Brand variable speed control motor to precisely control the screw rotating speed

  • High strength aluminum alloy gearbox with good appearance and excellent cooling effect

  • Instant displaying of melt pressure and temperature, etc.

  • Based on a computing operation system with friendly interface

  • The blown film frame can be electrically lifted, which is easy to lead the film and adjust the production technology.

  • Equipped with retractable unit for the blown film frame to easily transport and move

  • Formula saving and loading

  • Emergency stop device and other safety devices to ensure the safety of the operator


Product  Application:
  • PE, PVC and modified PP
  • New material formula development
  • Film blowing property test
  • Masterbatch dispersion test
  • Optimization of blown film production technology
  • Production of simple layer tubular film blowing 


 Product Details:


HTBS-20 Lab Blown Film Extrusion Machine




1. Lab Single Screw Extruder 

   1.1 Output: max. 3kg/h

  1.2 Screw diameter: 20mm, 38CrMoAIA nitride, nitriding layer: 0.4-0.5mm

  1.3L/D ratio: 25:1

  1.4 Variable frequency speed motor: 3KW, SIEMENS

  1.5 Gearbox: reduction ratio i=11.71

  1.6 Barrel: 38CrMoAIA nitride, nitriding layer: 0.4-0.5mm, air cooling system



  1.7 Barrel heating: 3 zones, total heating power 3.6KW, RKC temperature controller

  1.8 Max. torque: 190Nm

  1.9 Max. rotating speed: 120rpm

  1.10 Max. working temperature: 3500C, cast aluminum heater

  1.11 Accuracy of temperature control: ±10C

  1.12 Movable feeding hopper



  1.13 SIEMENS PLC control system



        1.13.1 SIEMENS 7.5’’ TFT touching screen

        1.13.2 Speed controller

        1.13.3 Self-adaptation barrel temp. control

        1.13.4  Accessing of formula through USB port;

        1.13.5 Graphic display of process parameters;

        1.13.6 Operation warning system


2. Blown Film Die




  2.1 Die lip diameter: 20mm

  2.2 Material: 42Mo

  2.3 Heating power: 680W

  2.4 Max. temperature: 4500C


3. Lab Precise Film Blowing Machine




  3.1 Max. film web width: 160mm

  3.2 Film thickness: 0.02-0.1mm

  3.3 Haul-off roll: Φ84mm, width 200mm

  3.4 Length of the haul-off roll: 1370-2000mm

  3.5 Haul-off speed: 0-15m/min, stepless speed

  3.6 Winding roll: Φ50mm, plate air shaft

  3.7 Blowing air pressure: 0-6bar 



Video Link:  









 Comercial Terms:


  Standard fumigation board packaging.




Payment Terms:

    40% down payment by T/T within ten banking days of signing Contract

      60% by T/T before the shipment



    Shipping date is 70 days after receiving down payment.

     Shipping from Guangzhou HUANGPU port.



    There will be 12 warranty upon acceptance for the equipment, except wear off spear parts.



All the machines are tested and commisioning well before the shipment. The buyer is required to install the machines according to the instruction of the Operator’s Manual. We could provide training on our factory site for free. If necessary, we could send engineers to the customer site to guide the equipment installation and commissioning until the machines could operate normally. In this case, the buyer should be responsible for our engineer’s accommodation, food and transportation fees. Also the buyer should pay USD120/day per person as the service fee to the engineers.


 About Us:

HARDEN INDUSTRIES LTD is an industrial group specializing in the designing and manufacturing of plastic processing equipments. POTOP and Hartek are our brands focusing on designing and manufacturing laboratory used precise extrusion machines for plastics and rubber industry. POTOP mainly focuses on complicated and customer tailored lab extrusion systems, while Hartek mainly focusing on simple and standarded lab extrusion machines. 


The main advantages of our lab extrusion products are high precise and high stable with updated technology and design and reliable instant after-sales services. Our customers range from international companies to a lot of universities 


For detail information on our company and our lab extrusion products, please browse our website at www.lab-extrusion.com and email us directly.


Factory & Trade Show:

Our factory for lab extrusion machines locates in Guangzhou city. Also, we take some shows in plastics industry, e.g. ChinaPlas, K-Show, NPE, etc.  We welcome you to visit us if possible. 




 Our Certifications:


Most of standard models of our lab extrusion equipment have CE certificate issued by SGS. For customer-tailored models, CE certificate would be available as per request.



 Contact Us:



Transaction History of the Supplier

Below is the information about the supplier's transactions conducted via Alibaba.com. If you require further details regarding the transaction data, please contact the supplier directly.

Transaction Overview


Transaction Details

This supplier has completedtransactions with buyers from .

Shipping Destination
Transaction Value
Transaction Date
Email to this supplier
China (Mainland)
Transaction Level:
Supplier Assessments:
4 Transactions 70,000+
The supplier’s transactions conducted via Alibaba.com in the past 6 months.
The supplier supports Trade Assurance – A free service that protects your orders from payment to delivery.
Supplier's Trade Assurance Limit: US $89,000
Learn More