A double-layer filter bag is composed of two layers of filter materials, the inner layer usually uses finer filter materials, the outer layer uses thicker filter materials, and a support net can be added between the two layers. The following are some commonly used double layer filter bag materials:
The inner layer is made of polyester fiber, and the outer layer is made of polypropylene fiber.
The inner layer is made of polyester fiber, and the outer layer is made of polyamide fiber.
Both the inner and outer layers are made of polyamide fibers.
The inner layer is made of PTFE material, and the outer layer is made of polyester fiber.
The inner layer is made of PTFE material, and the outer layer is made of glass fiber.
Suitable double-layer filter bag materials need to be selected based on specific filtration requirements and environmental conditions.
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