Question 1

Do your mesh belts support Chaolong or Hongda equipment?

Accepted Answer

Perfectly compatible. We have successfully supplied Reicofil, Chaolong, Hongda, and other major manufacturers, with tailored practical tuning data.

Question 2

Do your products comply with EU or German environmental regulations?

Accepted Answer

Yes. We have obtained the Food Contact Certificate and completed LUCID registration under German law, ensuring compliant global delivery without trade barriers.

Question 3

What is the expected service life of Yiheng mesh belts?

Accepted Answer

Under standard operating conditions, Yiheng mesh belts typically last 3-6 months, significantly outperforming standard polyester mesh thanks to our high-wear-resistant materials.

Question 4

What does DCD represent in the meltblown process, and what is its purpose?

Accepted Answer

DCD is the physical distance between the die head and the mesh belt. Adjusting it balances "filtration efficiency" and "softness," making it a key process variable in meltblown pro…

Question 5

What is anti-static mesh? What are the thin black lines inside?

Accepted Answer

The thin black lines are specialized carbon fiber conductive yarns. They actively dissipate charges generated by friction, solving fabric sticking and flipping in dry environments.

Question 6

What does CFM mean in belt specifications, and how does it affect production?

Accepted Answer

CFM is the unit of air permeability. It directly determines fiber adhesion and web uniformity, making it the primary technical parameter for selection.

Question 7

Producing dark or high-end packaging non-wovens, clients complain about heavy mesh marks. Any upgrade solution?

Accepted Answer

Upgrading to "Flat Yarn weaving" is the best path. The flat surface provides more than twice the contact area of round yarn.

Question 8

When producing soft hygiene fabric below 1.2 Denier, fiber hanging and streaks keep occurring. Which belt should I choose?

Accepted Answer

The key is "High-density weaving" and "Low CFM control." We suggest using the HY4106 Encrypted series.

Question 9

My line speed exceeds 500m/min. Which belt should I purchase to ensure no speed reduction and no seam marks?

Accepted Answer

High-speed operation requires a solution with excellent anti-static performance and seam flatness. We recommend the SK604 High-Speed series with a High-Low Loop seam.

Question 10

Why do High-Low Loop seams run more smoothly than standard Spiral seams?

Accepted Answer

Because it achieves a "zero-step" design. Special weaving allows seam loops to interlock without increasing total thickness, eliminating the source of vibration.

Question 11

Why do minor deviations in air permeability (CFM) cause "cloudy spots" on the fabric?

Accepted Answer

Because CFM determines the distribution of negative suction pressure during web formation. Uneven distribution disrupts fiber flow, creating spots of inconsistent weight.

Question 12

Why does adding black filaments into the polyester mesh prevent fabric flipping?

Accepted Answer

The black filaments are conductive yarns doped with carbon fiber; they actively dissipate frictional charges to the equipment's grounding terminal, eliminating static attraction.

Question 13

Downtime for replacement is too long. Is there a way to shorten the tracking adjustment time?

Accepted Answer

Use the "Reference Marking Method." By marking a physical baseline on the tension rods, the new belt can be reset rapidly.

Question 14

Threading the seam is difficult and keeps getting stuck. Any efficient techniques?

Accepted Answer

The key lies in "Tip Grinding" and using "Memory Steel." Keeping loop alignment and a smooth wire tip is essential for success.

Question 15

Without an automatic corrector, how do I balance the tension on both sides?

Accepted Answer

Follow the "Marking Method" and "Reverse Tightening" principle. Symmetrically adjust bolts and observe during an empty run to lock the balance point.

Question 16

How to clean polymer drips or lumps from the mesh without damaging it?

Accepted Answer

Use the "Heat Softening + Vacuuming" method. Never focus on one spot; move the heat gun constantly to prevent mesh thermal shrinkage.

Question 17

The fabric starts to float or flip at speeds above 400m/min, severely affecting quality. What should I do?

Accepted Answer

Flipping is mostly caused by static attraction or unbalanced air pressure. Solve it by strengthening grounding and balancing cooling air vs. lower suction.

Question 18

There are longitudinal streaks on the fabric, suspected to be fiber hanging. How to solve this?

Accepted Answer

The root cause is fiber penetration into the mesh. Solve it quickly by reducing lower suction and sanding foreign objects; adjust mesh CFM selection for a long-term fix.

Question 19

What industry technical indicators does Yiheng Mesh follow during the manufacturing process?

Accepted Answer

As a National High-tech Enterprise, Yiheng strictly enforces industry-leading standards for air permeability and dimensional tolerances, ensuring highly consistent physical perform…

Question 20

What environmental compliance guarantees does Yiheng provide for exports to the German or European markets?

Accepted Answer

Yiheng has completed LUCID registration under the German Packaging Law, ensuring that product packaging and logistics comply with EU circular economy and waste management laws, eli…

Question 21

Can Yiheng mesh belts be used for producing medical hygiene or food packaging non-wovens?

Accepted Answer

Yes. Yiheng mesh belts have obtained Food Contact Safety certification, ensuring no migration of harmful substances during high-temperature production, fully complying with hygiene…

Question 22

What risks do belts face when producing in extremely dry and dusty regions?

Accepted Answer

The main risks are abnormal wear and static sparks. Dust in the mesh accelerates yarn wear, and dryness increases the risk of static deflagration.

Question 23

Why does fabric flipping still occur even with an anti-static belt installed?

Accepted Answer

This is usually due to the equipment-side grounding system failure or insufficient grounding rod depth, preventing the static dissipated by the belt from being fully discharged.

Question 24

What risks should I be aware of when using a heat gun to clean polymer lumps?

Accepted Answer

Never focus the heat gun on one spot for too long. Excessive concentrated heat causes local thermal shrinkage of polyester yarns, leading to belt deformation or melting holes.

Question 25

Why does the belt seam suddenly burst or crack during operation?

Accepted Answer

The root cause is delayed response to mistracking, leading to fibers catching on the side of rollers and creating extreme tension. Prevention relies on tracking limit switches and …

Question 26

Why is it mandatory to procure hydrolysis-resistant mesh in high-temperature and high-humidity production environments?

Accepted Answer

Standard polyester mesh degrades (hydrolyzes) in hot and humid environments, leading to rapid strength loss, brittleness, and breakage. Hydrolysis-resistant mesh, with special stab…

Question 27

Is there a significant difference between standard mesh and anti-static mesh in winter production?

Accepted Answer

The difference is huge. Standard mesh easily attracts fabric in dry seasons, causing flipping. Anti-static mesh actively dissipates charges via conductive yarns, ensuring smooth re…

Question 28

To get a finer fabric texture without grid marks, should I choose Round Yarn or Flat Yarn?

Accepted Answer

Round yarn provides strong support but small contact points, leading to mesh marks. Flat yarn has a smooth surface and large contact area, significantly improving fabric smoothness…

Question 29

What is the performance difference between Spiral Seams and High-Low Loop Seams? How to choose?

Accepted Answer

Spiral seams are cost-effective and easy to thread, suitable for low speeds and standard products. High-low loop seams match the mesh thickness exactly, eliminating "roller jumping…

Question 30

What are the selection requirements for belts used in producing fabrics with softeners or hydrophilic additives?

Accepted Answer

You must choose the encrypted anti-static series and increase permeability by 300-500 CFM to offset the clogging effects of additives.

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Questions & Answers

What are the selection requirements for belts used in producing fabrics with softeners or hydrophilic additives?

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