CLPlastics & Moulding
Sector solution / Woven polymer & tape
Tape-extrusion and woven-polymer lines — the machinery behind PP/HDPE woven sacks and fabric — run fast webs where cooling air and process vacuum control tape quality.
CTXWhat this sector runs
In tape extrusion, the polymer film is cast, cooled and slit into tapes that are then stretched and wound; cooling air on the casting and stretching sections controls tape gauge and strength at line speed. Steady, uniform cooling air is what keeps tape properties consistent across the width.
Vacuum handles calibration and hold-down on the casting and winding sections, and material conveying feeds the extruders. Reading a tape-line as cooling air plus process vacuum and conveying is the recommended structure for woven-polymer machinery.
REQTypical duty requirements
Air & vacuum on a tape-extrusion line
| Section | Duty | Recommended class |
|---|---|---|
| Cast-film cooling | Uniform cooling air | CX centrifugal |
| Stretching / annealing air | Process hot air | Centrifugal blower |
| Calibration / hold-down vacuum | Process vacuum | Vacuum pump |
| Granule conveying | Low-pressure air | Turbine blower |
ENGEngineering notes
In tape extrusion the cast film's cooling sets tape gauge and, through orientation, its strength — uneven cooling means uneven gauge and inconsistent strength across the width. Uniform, steady centrifugal air over the casting section holds temperature even at line speed. A balanced CX machine supplies that uniform cooling; specifying the airflow across the web and choosing an in-house-balanced blower is what keeps tape properties consistent across the whole width.
Calibration and hold-down vacuum on the casting and winding sections seat dimensions and keep the web controlled at speed. The duty is steady, so the pump is chosen for stable hold. A YELV vacuum pump sized to those sections keeps calibration and hold-down consistent, complementing the cooling air — for a machinery builder, specifying that vacuum duty per line is part of delivering a tape line that runs right at the customer's mill.
A tape and woven-polymer machinery builder needs cooling and vacuum units that behave identically from one line to the next, because the customer judges the machine on consistent tape. That puts the emphasis on repeatable manufacturing — impellers cast and balanced to the same spec every time — so a blower on the tenth line performs like the one on the first. A domestic supplier able to deliver that consistency, and to support spares at the customer's mill, becomes part of the machinery builder's own reliability promise. Specifying the cooling and vacuum duties tightly, and sourcing them repeatably, is what lets a line run right wherever it is installed.
SOLRecommended Yash families
01 / Family
Uniform cooling air to hold tape gauge and strength across the web.
02 / Family
Process vacuum for calibration and hold-down on casting and winding.
03 / Family
Low-pressure air for granule conveying to the extruders.
Lohia Group is a valued customer of Yash Blowers. Product recommendations on this page describe our standard solutions for the plastics & moulding sector, not that company's specific installations.
WHYWhy Yash Blowers
A woven-polymer machinery builder needs consistent cooling and vacuum units line after line. Yash Blowers casts and balances its own impellers in Faridabad, since 1998, under ISO 9001:2015, and dispatches 300+ machines a day — a dependable domestic source for OEM and mill alike.
FAQFrequently asked questions
Uneven cooling produces uneven gauge and orientation, which shows up as inconsistent tape strength. Uniform CX-series cooling air holds temperature across the web so tape properties stay consistent.
At calibration and hold-down on the casting and winding sections. A YELV vacuum pump supplies the steady process vacuum these stations need.
RFQ / Request for Quotation
Send your duty point — flow and pressure, or the vacuum you need — and an engineer sizes the right model and quotes ex-works Faridabad, FOB Nhava Sheva or CIF your port.
