Microtex PT Bags

PT Bags woven pluri tubular bags for mfrs of tubular lead-acid battery

Engineered woven gauntlets – PT Bags for tubular battery from Microtex

Our PT Bags are tested & proven for performance in our own batteries!

PT Bags manufacturers in India

Microtex PT Bags (Pluri Tubular Woven Gauntlets) used in the production of tubular battery plates are an innovative and welcome import substitute for industrial lead-acid battery manufacturers in India – pioneered by the manufacturers of the famous Microtex battery and separators, 50 years ago. A result of the persistent and completely indigenous research and inventive enterprise of our founder Mr A Govindan, who held a Patent for the Pluri Tubular Bags issued in 1975 by the Trademarks & Patent Registrar, India

Engineered woven gauntlets – PT Bags for tubular battery from Microtex

  • Microtex PT Bags are stringently tested in house for chemical and electrical properties, meeting and exceeding the norms. High-performance batteries made from our PT Bags have met the severe endurance test as per IS 1651 in Stationary cells and Life-cycle tests as per Indian Railway specifications for high cranking currents in Diesel Locomotive Starter Batteries

Microtex PT Bags are –

Properties of high-performance Microtex PT Bags
  • MICROTEX PT Bags for the tubular battery is regularly tested in our chemical laboratories for
  • dimension stability
  • oxidation resistance
  • electrical resistance
  • tensile strength
    and are found to surpass our specifications
Key features
  • Microtex PT Bags have uniform tube diameter without any inconsistencies
  • High tensile gauntlet strength; does not rupture in battery service life
  • Very low electrical resistance; unhindered battery discharge performance
  • Enhanced elasticity; Resilience in compression of active materials
  • No impurities present; Chemically clean & pure
  • Very low weight loss; does not disintegrate inside the battery
  • Excellent oxidation resistance; very long life
  • Dimensionally stable; does not get affected in sulphuric acid inside the battery
  • Very small pore size; Ensures retention of active mass & eliminates shedding
  • Mechanically very strong; no failures due to bursting of tubes
    Engineered profile; ease of use in shop floor
PT Bags range

Available in global standard dimensions:

  • Tube diameters available in 6.24, 7.24, 8.0 & 8.4mm
  • No of tubes – as required – standard sizes include 15 tubes, 19 tubes, 21,  23 & 52 tubes
  • Lengths from 50mm to 2000mm
PT Bags usage

Suitable for all tubular battery production like inverter batteries, traction battery, semi-traction battery, gel battery, flooded batteries, & submarine batteries


Please refer our PT Bags material safety data sheet here

GTP & drawings

For PT Bags drawings, GTP & price list for PT Bags, Please send us a quick message with your requirements. We shall provide you with all information as required.

What are PT Bags?

PT Bags or Pluri Tubular Bags or Tubular Bags are used as oxide holders in Industrial Tubular battery plates in Lead-acid batteries. It is a vital component of the Lead-acid battery made from polyester fabric it ensures high-performance requirements of heavy-duty traction batteries and standby stationary cells. The tubular bag surrounds the rod-shaped electrodes called spines joined at the top to form a busbar and filled with lead oxides, one end serves as the bus bar and the open end is locked with a plastic bottom bar. The tubular bag construction is highly microporous and ensures free flow of electronic ions during the chemical reaction when the plates are charged or discharged, for high performance of the battery. 

The fabric design ensures that the active material shedding is practically eliminated and as the spines are covered by the active material, corrosion is much slower and inhibited compared to flat plate batteries. Although the recent lower-cost non-woven gauntlets have taken a space in the market because of lower costs, the woven gauntlets are superior in strength and will not rupture easily in long-life batteries as OPzS & OPzV batteries with a designed life of 20 years.

Microtex invented & have been manufacturing & exporting PT Bags since 1969!
PT Bags with bottom supports
Ruti looms for PT Bags
PT Bags for tubular battery
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