Cold-Feed Rubber Extruder – Complete Overview

What it does

A cold-feed rubber extruder (also marketed as a pin-barrel cold-feed extruder, vent-type cold-feed extruder, or cold-feed rubber block extruder) accepts rubber compound at ambient temperature. Inside the machine, a precision screw applies controlled shear and compression while multi-zone heaters and coolers hold the stock within a narrow temperature window. This single-step process plasticizes, degasses and shapes the rubber without the need for pre-heating on a warm-up mill. Compared with traditional hot-feed lines, it cuts energy consumption by 20–35 %, keeps stock temperature low, and virtually eliminates early scorch.

Where it is used

• Tire plants: PCR, TBR and OTR tread, sidewall and apex

• Automotive: door, window and trunk sealing profiles

• Industrial: hydraulic hoses, fuel hoses, large-bore water hoses

• Wire & cable: low-, medium- and high-voltage insulation and sheathing

• General rubber goods: conveyor-belt covers, anti-vibration pads, sponge profiles, sheet and mat lines

Guangdong LiNa LN-E Series – 45 mm to 200 mm Full Range

Engineered for high plasticizing efficiency at low temperature, the LN-E series offers nine models that cover every production scale—from 60 kg/h laboratory lines to 3 000 kg/h ultra-wide sheet lines. All machines share the following core advantages:

1. High-compression-ratio screw (patented wave-type + BM barrier) for complete plasticizing below 110 °C  

2. Optional pin-type shearing zone with 8–12 rows of radial pins for +15–25 % dispersion improvement in high carbon-black recipes  

3. 4–6 zone PID ceramic heaters and closed-loop water cooling (±2 °C accuracy) for 15-minute heat-up  

4. ABB or Siemens inverter and hardened-gear reducer (≥96 % efficiency, ≤78 dB(A))  

5. Hydraulic slide screen changer (<3 min) and self-cleaning mixing head  

6. Modular die head—swap sheet, tube or profile dies in minutes

Model & Output Snapshot

Typical standard package

• Main extruder with inverter, TCU and hardened-gear reducer

• Vertical forced-feed roll device

• Hydraulic screen changer & gear pump (optional)

• Custom die head

• Siemens PLC + 10" HMI control cabinet

• Water/air-cooled haul-off, cutting and wind-up line (optional)

Warranty & Delivery

• 12 months on complete machine, 24 months on screw & barrel

• Free three-day on-site commissioning & lifetime technical support

• 30 working days for standard models, 45–60 days for custom builds

About Guangdong LiNa Industrial Co., Ltd.

Located in Dongguan, China, LiNa operates a 30 000 m² smart plant and has specialized in rubber/plastic mixing and extrusion equipment for over 20 years. The company is a National High-Tech Enterprise, holder of 80+ patents and certified to ISO 9001, CE and UL standards. Products are exported to more than 40 countries, and LiNa provides turnkey plant solutions with 24-hour after-sales service across China.

Web: www.gdlina.com