Rubber & Plastics Processing
Precise Gas Pressure Control For Rubber & Plastics Processing
Built on high-pressure proportional regulators, closed-loop feedback and high-flow control, we deliver stable, fast-responding solutions for foaming, extrusion, blow molding and tire manufacturing. Our solutions help rubber and plastics processors reduce defects while keeping product dimensions and density consistent.
01 SolutionWhy Our Rubber & Plastics Solutions
In rubber and plastics processing, gas pressure often decides product quality as much as the material does. Unstable pressure in physical foaming causes uneven cells, density variation, surface pitting and silver streaks, while conventional pressure-reducing valves respond slowly and are hard to connect to digital controls. With more than 45 years in pneumatic control, Kao Lu supplies proportional regulators already used on physical foaming machines, rotary and linear blow molding machines and rubber and plastic equipment.
Engineered for High Pressure, Built for Consistent Quality
Our high-pressure proportional regulators handle CO₂ at 150 to 300 bar and N₂ at 100 to 250 bar for supercritical foaming, adjusting output in real time as screw speed and melt flow change. QKL regulators cover 2 to 100 bar at 0.1% F.S. accuracy, the QKL-B4H delivers up to 170 L/min at 70 bar for PET bottle molding, and volume boosters extend flow for high-flow blowing. Standard 0–10 V, 4–20 mA and RS485 Modbus interfaces simplify PLC integration.
02 Application examplesFoaming, Extrusion & Tire Manufacturing
Physical foaming replaces chemical blowing agents in lightweight parts, insulation and cushioning; industry reports show microcellular molding can cut part weight by at least 10% and raise press productivity by 20–33%, provided gas pressure stays stable. In rubber and medical tube extrusion, QKL vacuum breaker assemblies set the vacuum in each sizing chamber zone to hold outer diameter and wall thickness. Tire building machines use QKL regulators to monitor large bladders, and catheter blow molding controls mold pressure from 1 to 100 bar.
03 ConclusionA Process Partner for Rubber & Plastics Manufacturing
We deliver application-oriented solutions that turn gas pressure into a controllable quality parameter. By combining high-pressure proportional regulators, closed-loop feedback and CE- and RoHS-compliant products designed in-house since 1980, we help rubber and plastics processors improve consistency, reduce scrap and support lightweight, chemical-agent-free foaming for automotive, packaging and consumer products. From regulator selection to machine integration, our engineers support you from trial runs to mass production.