Leiman Truck Air Filter Process & Equipment

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Cured and Uncured Filter Papers for Air Filters

Filter paper is processed by mixing plant fiber pulp and a little cotton pulp. Because of its fiber structure, leaving numerous tiny holes for liquid particles passing through and leaving solid particles out, which is the basic principle of solid and liquid separation.

  • The filter paper can separate impurity particles from the liquid and extend engine and auto service life.
  • High filtration efficiency. 98% filtration efficiency of 4 µm particles and 99% filtration efficiency of 6 µm particles.
  • Up to 800 L/m2/s air permeability.
  • Oil filter paper can withstand up to 600 kPa pressure.
  • Up to 70 70 mN/m high stiffness of cured filter paper.

Expanded Metal Mesh in Air & Air Compressor Filters

The expanded metal mesh is made of high-quality carbon steel plate stretched by a steel mesh punching and shearing machine, and the surface treatment adopts a galvanizing process. It is an important component of filters for inner supporting and outer protection.

Hot Melt Glue – EVA, PO & PA Types

Hot melt glue, also called hot melt adhesive is widely used in air filters and oil filters for bonding, shaping and assembling in the production process. Because hot melt glue is environmental protection and fast curing, which can increase production efficiency. Different filter applications have different requirements for the characteristics and materials of filter hot melt glue. Commonly used filter hot melt glue include EVA, PO (Polyolefin), PA (Polyamide), etc. And PA hot melt glue is especially used for oil-resistant and high-temperature filtration.

Metal End Caps for Air & Oil Filters

Metal end caps are mainly used for the end closure of paper (filter cloth) and filter screens of heavy-duty vehicle air filter. The two ends of the filter paper and the filter screen are sealed to ensure that all the gas passes through the filter paper (filter cloth) without short circuit.

  • Material: galvanized steel plates.
  • Thickness: 0.4/0.5/0.6/0.7 mm
  • We can customize metal end caps according to original part number.

Perforated Metal for Hydraulic and Air Filters

Perforated metal mesh is made of galvanized or stainless steel plates, which has excellent corrosion resistance performance for long term use. Perforated metal mesh has rigid structure and long service life to protect filters from transformation. It is widely used as inner support mesh or outer protective mesh of truck air filter, car air filter, eco fuel and oil filters and hydraulic filters.

Plastic Molds for Efficient Air Filter Molding

Plastic molds are widely used for PU frame molding in the PU air filter production. It can increase production efficiency and is flexible to match almost all of PU air filter models.

We have several standard plastic molds for you to produce popular PU air filters at the market, special molds can be customized according to your requirements or original part number.

  • Material: PP
  • Color: white
  • Technology: injection molding
  • Dimension: just supply the original part number of air filter.
  • Application: for PU air filter molding.