Eaton Industrial Polypropylene Mesh Filter Bags

Precision Filtration for Demanding Industrial Applications

In the world of industrial liquid filtration, consistency and chemical compatibility are paramount. For operations dealing with aggressive chemicals, acids, or food-grade fluids that require surface filtration without fiber migration, Eaton Industrial Polypropylene Mesh Filter Bags stand out as a premier solution. These bags combine the chemical resistance of polypropylene with the precise, non-deformable structure of a woven mesh.

At Purecowater, we supply the full range of Eaton filtration solutions. This guide details the features, technical specifications, and ideal applications for Polypropylene Mesh filter bags to help you determine if they are the right fit for your process.

What Are Polypropylene Mesh Filter Bags?

Eaton’s mesh filter bags are surface filtration media. Unlike “depth” filtration (like needlefelt), which traps particles inside a matrix of fibers, mesh filtration captures particles on the surface of individual filaments. When manufactured from Polypropylene, these bags offer a distinct advantage: they provide a precise micron rating while maintaining excellent resistance to acids, alkalis, and organic solvents.

They are available in two primary weave types:

• Monofilament Mesh (PMO): Woven from single-fiber threads. This structure is extremely strong and provides precise, consistent aperture sizes. Ideally used for applications requiring exact particle retention sizes.
• Multifilament Mesh (PPMU): Woven from twisted strands of smaller fibers. This is a cost-effective option for nominal filtration where strict precision is less critical than bulk removal.

Feature	Polypropylene Mesh Benefit
Chemical Compatibility	Excellent resistance to mineral acids, organic acids, alkalis, and solvents.
Surface Filtration	Traps particles on the exterior, making it easy to wash and reuse in certain non-critical applications.
Fiber Migration	Low to zero fiber release, ensuring product purity (especially with Monofilament).
Construction	Available with Eaton’s SNAP-RING® or SENTINEL® sealing technologies to prevent bypass.

Technical Specifications

Understanding the operating limits of polypropylene is crucial for preventing bag failure. While Nylon (NMO) is often used for solvents, Polypropylene is the material of choice for acidic environments and water treatment applications where cost-efficiency and wide chemical compatibility are needed.

• Material: 100% Polypropylene (Mesh/Weave)
• Micron Ratings: Typically available from 25 µm to 800+ µm
• Max Operating Temperature: Approx. 194°F (90°C)
• pH Range: 1 – 14 (Excellent broad-spectrum resistance)
• Standard Sizes:
  • Size 01 (7″ x 17″)
  • Size 02 (7″ x 32″)
  • Size 03 (4″ x 9″)
  • Size 04 (4″ x 15″)

Key Applications

Polypropylene mesh bags are frequently deployed in industries where specific particle classification is required, or where the fluid stream would degrade other materials like polyester or cotton.

1. Chemical Processing

Due to polypropylene’s resistance to strong acids and bases, these bags are used to filter aggressive chemical batches, ensuring that particulate matter is removed without dissolving the filter media itself.

2. Water and Wastewater Treatment

For the removal of algae, sand, and coarse grit from incoming water, mesh bags are ideal. They can handle high flow rates and heavy particulate loads without blinding as quickly as felt bags.

3. Parts Cleaning and Metal Working

In metalworking fluids and parts washers, these bags remove metal shavings and debris. The smooth surface of the mesh allows for easier cleaning and prevents the “embedding” of sharp metal fines that can occur with felt media.

4. Food and Beverage

While often associated with NMO (Nylon), Polypropylene mesh is used in specific food applications where its chemical inertness is preferred, such as filtering certain edible oils or coarse filtration of sugar syrups.

Why Choose Eaton Filtration?

Eaton is a global leader in filtration for a reason. Their bags are manufactured to rigorous ISO 9001 standards. The inclusion of the SNAP-RING® or the welded SENTINEL® seal ring ensures that fluid does not bypass the filter media—a common issue with lower-quality generic bags. When you choose an Eaton bag from Purecowater, you are investing in process security.