Mark pen's ink reservoir extrusion line

Introduction of Mark Pen's Ink Reservoir Extrusion Line

YAOAN Mark Pen Ink Reservoir Production Line is a specialized machine designed for coating PET yarn with two layers of PP (Polypropylene) and cutting the coated profile into precise, neat, and beautiful lengths. This machine is widely used in the production of ink reservoirs for markers, pens, and other writing instruments. Below is a detailed explanation of its working principles, configurations, and the reason for using both a 50mm extruder and a 30mm extruder.

Ink Reservoir Extrusion Line Configurations

1. Yarn Pay-Off Stand:

• Holds and feeds the PET yarn into the production line.

2. Yarn Haul-Off Unit:

• Pulls the yarn through the coating and cutting process at a controlled speed.

3. 50mm Extruder:

• Used to extrude the primary PP layer onto the PET yarn.

• Provides the main structural coating for the ink reservoir.

4. 30mm Extruder:

• Used to extrude a glue-style polymer that acts as an adhesive layer.

• Ensures strong bonding between the PET yarn and the PP layer.

5. Co-Extrusion Cross Die Head:

• Combines the outputs of the 50mm and 30mm extruders to apply both layers simultaneously onto the PET yarn.

6. Vacuum Calibration Water Tank:

• Cools and solidifies the coated yarn while maintaining its shape and dimensions.

7. Haul-Off Unit:

• Pulls the coated yarn through the cooling tank and toward the cutting unit.

8. Automatic Cutter:

• Cuts the coated profile into the required lengths with neat and precise ends.

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Why Two Extruders? (50mm and 30mm)

1. 50mm Extruder:

• Handles the primary PP layer, which provides the main structural coating for the ink reservoir.

• Designed to process a larger volume of material, ensuring a consistent and durable outer layer.

2. 30mm Extruder:

• Extrudes a glue-style polymer that acts as an adhesive between the PET yarn and the PP layer.

• Ensures strong bonding and prevents delamination of the layers.

• The smaller diameter of the 30mm extruder is ideal for processing the adhesive material in precise amounts.

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Working Principle

1. Yarn Feeding:

• The PET yarn is fed from the pay-off stand into the production line.

2. Co-Extrusion Coating:

• The 50mm extruder applies the primary PP layer, while the 30mm extruder applies the adhesive polymer layer.

• Both layers are combined in the co-extrusion cross die head and coated onto the PET yarn.

3. Cooling and Shaping:

• The coated yarn passes through the vacuum calibration water tank, where it is cooled and shaped.

4. Cutting:

• The haul-off unit pulls the coated yarn to the automatic cutter, which cuts it into the required lengths.

• The cut ends are neat and aesthetically pleasing, ensuring high-quality ink reservoirs.

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Applications of Ink Reservoir Extrusion Line

• Mark Pen Ink Reservoirs:

• Used in markers, highlighters, and other writing instruments.

• Other Applications:

• Can be adapted for similar products requiring coated yarns with precise dimensions.

Advantages of YAONAN's Mark Pen's Ink Reservoir Extrusion Line

1. High Precision:

• Ensures consistent coating thickness and precise cutting lengths.

2. Strong Bonding:

• The adhesive layer from the 30mm extruder ensures excellent bonding between the PET yarn and PP layer.

3. Neat and Beautiful Cuts:

• The automatic cutter produces clean, professional-looking ends.

4. Mature Technology:

• Proven performance with successful installations in countries like India, Iran, and Japan.

5. Customizable:

• Can be tailored to meet specific production requirements.

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Conclusion

The YAONAN Mark Pen Ink Reservoir Production Line is a highly efficient and reliable machine for producing coated PET yarn used in ink reservoirs. By combining a 50mm extruder for the primary PP layer and a 30mm extruder for the adhesive layer, it ensures strong bonding and high-quality output. Its mature technology and proven track record make it a trusted choice for manufacturers worldwide.