Types of Liquid Filter Bags and Suggestions for Selection

Liquid filter bag is a commonly used filter element for filtering out impurities or suspensions in liquid and improving the purity of liquid, which is commonly used in stainless steel precision filter equipment, such as bag filter, to effectively filter out impurities and suspensions in the liquid, and at the same time, protect the machinery and equipment from contamination. There are various structural forms of liquid filter bags, which are mainly divided into three types of needle felt filter bags (polyester PET, polypropylene PP, polytetrafluoroethylene PTFE), meltblown non-woven filter bags (polypropylene PP) and monofilament mesh filter bags (polyamide PA) according to the way of forming the filter media, and the models are No. 1 filter bag, No. 2 filter bag, No. 3 filter bag, No. 4 filter bag and No. 5 filter bag. Filter bags have acid and alkali resistance, high filtration performance, up to 99.9% filtration efficiency and can be used repeatedly, etc. They are widely used in the filtration of ink, resin, paint, adhesive, industrial water, seawater, petrochemical raw materials, chemical products, wine, etc.

Qingdao Star Machine adopts strict production process standards and systematic quality inspection standards from raw material purchasing to product leaving the warehouse, and provides 3 types of filter bags, including PP meltblown filter bag, Nylon monofilament filter bag, and needle felt filter bag (PP/PE/PTFE). The main models are No.1 filter bag, No.2 filter bag, No.3 filter bag and No.4 filter bag, which are characterised by precise filtering pore size (1μm-50μm), stable performance, suitable ring mouth, etc., and are suitable for the filtration of medium and low viscosity liquids.

Working Principle

Needled felt filter bag: Needled to form a highly fluffy pore size for interception and filtration.

Meltblown non-woven filter bag: the filaments are arranged irregularly and moulded to intercept small particles efficiently.

Monofilament mesh filter bag: using the principle of surface filtration, the particles larger than its own mesh will be intercepted and filtered.

Product Features

Precise filter pore size

Stable performance

Suitable ring opening

Good friction resistance

Very good resistance to acids, alkalis and oxidation

Typical Application

Working Characteristics

1. Needled felt liquid filter bag

2. Nylon (Nylon) monofilament liquid filter bag

Related Questions

Q1: Polyester filter bags, polypropylene filter bags, PTFE filter bags, nylon filter bags chemical compatibility?

Q2: How to choose the liquid filter bag?

Q3：Standard models and parameters of liquid filter bag

Q4: Nylon monofilament mesh filter bag mesh size