Question 1

What are the main filter media options for your melt filter discs?

Accepted Answer

We offer two main premium types: Stainless Steel Fiber Felt (ideal for high viscosity, featuring large dirt-holding capacity and long service life) and Stainless Steel Sintered Mesh (featuring high mechanical strength and excellent impact resistance).

Question 2

Which stainless steel grades do you use, and how do I choose?

Accepted Answer

We standardly use 316L, 310S, and 304. For high-temperature lines (like polymer extrusion) up to 310S limits, we highly recommend 316L or 310S due to their superior corrosion and thermal resistance compared to standard 304.

Question 3

What filtration precision ratings can you provide?

Accepted Answer

Our micron rating ranges from 3 to 200 microns. We provide a full parameter table to match the exact purity for your melt filtration.

Question 4

What is the difference between your soft seal and hard seal structures?

Accepted Answer

Soft seal refers to the center ring wrapped type, providing excellent sealing flexibility. Hard seal utilizes a center ring welded type, which, along with a welded bracket on the disc, is engineered to withstand extremely high and uniform hydraulic pressure.

Question 5

Are your filter discs compatible with my existing filtration machinery?

Accepted Answer

Yes, 100%. We provide standard dimensions including 4.3", 6", 7", 8.75", 10", and 12". More importantly, we support full customization; you only need to provide your technical drawings or original dimensions.

Question 6

Can your filter discs be used in lithium battery separator production?

Accepted Answer

Absolutely. Our melt filter discs are perfectly optimized for lithium battery diaphragm melt filtration. They ensure stable pressure, preventing film breaking during high-speed stretching lines.

Question 7

Are these discs suitable for high-speed biaxially oriented film lines like BOPET or BOPP?

Accepted Answer

Yes. They are widely applied in BOPET, BOPE, BOPP, and carbon fiber melt filtration, where maintaining a stable flow rate and high filtration accuracy under high viscosity is critical.

Question 8

Are your melt filter discs washable and reusable?

Accepted Answer

Yes. Due to the stable mechanical structure of our sintered mesh and fiber felt, the discs can withstand repeated chemical, thermal, or ultrasonic cleaning, significantly lowering your operational costs.

Question 9

How often do I need to clean or replace the filter discs?

Accepted Answer

It largely depends on your polymer material, viscosity, and impurity levels. However, our optimized multi-segment disc design expands the effective filtration area per cubic meter, resulting in stable pressure and a significantly longer on-stream life compared to standard alternatives.

Question 10

How do you prevent media migration or layer separation under high pressure?

Accepted Answer

Our professional vacuum sintering and precision welding technologies diffusion-bond the wire meshes together. This rigid structure guarantees that pore sizes remain fixed and layers never separate under continuous pressure surges.

Question 11

Can I get a sample before placing a bulk order?

Accepted Answer

Yes, we provide samples (standardly 4.3" or 6"). While sample and freight costs are initially born by the buyer, the sample fee is 100% refundable upon your formal bulk contract.

Question 12

Do you support OEM/ODM customized branding?

Accepted Answer

Yes, we fully support OEM/ODM. We can laser-mark your brand name, logo, or specific part numbers on the center ring of the filter discs for easy tracking.

Question 13

What is your standard packaging for export?

Accepted Answer

We use Standard Export Packing. Each disc is individually packed with anti-dust protective film, carefully layered with shock-absorbing foam, and then packed into sturdy seaworthy wooden cases or heavy-duty cartons to avoid any transit damage.

Question 14

What is the typical lead time for a standard order?

Accepted Answer

For standard sizes like 6 or 12 inch and small quantities, we can ship within 7 to 10 days. For large batch orders or custom specifications, the lead time typically ranges from 20 to 30 days, depending on our workshop schedule.

Question 15

What is the Customs HS Code of your melt filter discs for import duty check?

Accepted Answer

The standard international HS Code we use is 8421.99.90.00 (Parts of Filtering or Purifying Machinery for Liquids). You can use this code to check the import tariff rate in your local customs system.

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