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Plastic Industry
High-pressure and standard compressed air for plastic processing and moulding
Plastic manufacturing — from PET bottle blow moulding and injection moulding to extrusion and thermoforming — relies heavily on compressed air. Blow moulding processes often require high pressure (25–40 bar), while auxiliary systems and mould cooling operate at standard industrial pressures. AP Compressors supplies and services the full range of compressed air equipment for plastic factories across Nepal, from standard rotary screw units to high-pressure boosters and complete system designs.
- High-pressure air compressors and boosters for PET blow moulding up to 40 bar
- Standard rotary screw compressors for injection moulding auxiliary systems and robot actuation
- Refrigerated dryers removing moisture that causes surface defects in moulded plastic parts
What we provide
- High-pressure air compressors and boosters for PET blow moulding up to 40 bar
- Standard rotary screw compressors for injection moulding auxiliary systems and robot actuation
- Refrigerated dryers removing moisture that causes surface defects in moulded plastic parts
- Properly sized air receivers to buffer the high-demand peaks of blow moulding cycles
- Complete pipeline distribution from central compressor room to each moulding machine
- Energy-efficient PM VFD compressors for injection moulding plants with variable throughput
- AMC and breakdown support to keep high-throughput plastic production running continuously
System overview
Key applications
PET Blow Moulding
PET preform stretch blow moulding requires compressed air at 25–40 bar for the blowing phase. High-pressure compressors or low-pressure/high-pressure booster combinations are standard in this application.
Injection Moulding
Injection moulding machines use compressed air at standard pressure (6–8 bar) to actuate ejector systems, core pulls, and hot runner valve gates, and to power robotic part removal systems.
Extrusion Lines
Plastic extrusion lines use compressed air for sizing calibrators, vacuum haul-off systems, and pneumatic cutters. Consistent pressure ensures dimensional accuracy of extruded profiles.
Thermoforming
Thermoforming machines use compressed air to form heated plastic sheet against moulds. Clean, dry air prevents moisture-related surface blemishes on finished products.
Material Conveying
Granule conveying from silos to hoppers and between drying and processing equipment uses compressed air or vacuum systems that require a reliable centralised air source.
Why AP Compressors
Compressed air specialists with deep experience in plastic industry
AP Compressors doesn't just supply equipment — we design, install, commission, and support the full compressed air system for your facility, backed by a nationwide service network across Nepal.
Turnkey supply, installation, and commissioning across Nepal
Rotary screw and PM VFD compressors matched to your exact CFM and pressure needs
Aluminium and MS pipeline networks for clean, low-pressure-drop air distribution
Refrigerated and desiccant drying for moisture-sensitive processes
AMC packages with scheduled maintenance and priority breakdown response
Genuine OEM consumables — filters, separators, oil — for maximum equipment life
Support & Answers
Frequently
Asked Questions
Find answers about our air compressors, air dryers, filters, customized compressed air solutions, installation, and maintenance services.
Reach out to our teamThe blowing phase in PET stretch blow moulding typically requires 25–40 bar. This is supplied either by a dedicated high-pressure compressor or a low-pressure screw compressor combined with a high-pressure booster compressor.
Moisture in compressed air can cause surface defects including blistering, splay marks, and cosmetic imperfections in moulded parts — particularly in hygroscopic resins like nylon and PET. Refrigerated drying is standard; desiccant drying is used for high-sensitivity processes.
High-pressure and standard-pressure systems are usually separate — the booster takes low-pressure air from the standard system and steps it up for blow moulding. We design integrated systems where both pressure levels share a common low-pressure header.
Yes. We supply and service high-pressure compressed air equipment for blow moulding applications. Contact us with your machine make, cycle time, and number of cavities for a correctly sized system recommendation.
Get in Touch
Need compressed air for your plastic industry operation in Nepal?
Share your location, process requirements, and we'll recommend the right system for your facility.