TDL Polypropylene Meltblown Filter Membrane Rolls | RFQ Sourcing Details

This TDL-series polypropylene meltblown membrane is intended for liquid-filtration media and filter-component production. The available range is divided into three groups: classic micro-grade media, TDL-II micro-grade media, and uncalendered coarse-grade media.

Buyers can select among published grades according to the required mean pore size, basis weight, air permeability, thickness, roll length, and available width. The classic series includes TDL-1, TDL-2, TDL-3, TDL-5, TDL-7, and TDL-10. Their stated mean pore sizes range from 1 μm ±10% to 10 μm ±10%.

These grades are supplied in 500 m rolls and listed in 10-, 20-, or 40-inch widths. Published basis weights range from 50 ±10% to 100 ±10% g/m², while thickness varies by grade from 0.13–0.20 mm. The TDL-II series includes grades from TDL-05-II through TDL-10-II.

Published mean pore-size ranges extend from 0.4–0.6 μm to 5.0–7.0 μm. Depending on grade, basis weight ranges from 45 to 110 g/m², with a stated ±10% tolerance. Roll lengths are 250 m or 500 m, and listed widths are 10, 20, or 40 inches, subject to the selected grade.

For coarser filtration requirements, the uncalendered range includes TDL-13, TDL-15, TDL-18, TDL-20, and TDL-30. Their stated mean pore sizes run from 13 μm ±10% to 30 μm ±10%. Published basis weights are 30–50 g/m², roll lengths are 600 or 800 m, and available width is listed as up to 240 cm.

The product information describes the media as suitable for further processing such as pleating, folding, ultrasonic welding, and edge sealing. It also identifies pleated filter cartridges, bag filters, and other liquid-filter formats as potential uses.

These processing and application statements should be validated against the buyer’s actual equipment, liquid chemistry, operating temperature, differential pressure, target retention efficiency, and finished-filter design.

Before procurement, confirm the exact grade and whether the stated pore size represents a mean pore size, nominal filtration rating, or a required efficiency value.

Buyers should also request the grade-specific technical data, test method, tolerances, roll-width availability, winding format, and lot acceptance criteria. For regulated applications, confirm which certifications or test reports apply to the exact ordered grade rather than relying on general product-family statements.

Chemical compatibility, maximum continuous operating temperature, fiber-release performance, food- , and performance after pleating or welding should likewise be documented for the intended service conditions.