Step 1: Raw Material Preparation

Most marker pen barrels are produced using plastic materials such as:

· PP (Polypropylene)

· ABS

· PS

These materials provide good strength, smooth surface quality, and stable molding performance.

Before production, the plastic raw material is dried and prepared to ensure stable injection quality and reduce product defects.

Step 2: High-Speed Injection Molding

The pen barrel is produced through the injection molding process.

Plastic material is melted inside the injection unit and injected into a precision mold cavity under high pressure. After cooling, the mold opens automatically and the pen barrels are ejected.

Modern stationery factories usually use:

· High-speed injection molding machines

· Multi-cavity molds

· Automated production systems

For mass production, molds can reach dozens or even more than 100 cavities to improve production efficiency.

Step 3: Multi-Cavity Mold Production

To achieve large-scale production, manufacturers often use high-cavity molds such as:

· 32 cavity molds

· 64 cavity molds

· 128 cavity molds

A 128-cavity pen barrel mold can produce 128 pen barrels in one injection cycle, greatly improving productivity and reducing manufacturing costs.

The mold design must ensure:

· Uniform filling

· Stable cooling

· Consistent product dimensions

· Fast cycle times

Step 4: Automatic Ejection & Collection

After molding is completed, the machine automatically ejects the pen barrels.

Factories may use:

· Conveyor systems

· Robotic arms

· Automatic collection devices

to improve automation and reduce labor costs.

Why High-Speed Injection Molding Is Important for Pen Production

Pen and stationery manufacturing requires:

· Fast cycle times

· Stable product consistency

· High production efficiency

· Low defect rates

This is why high-speed servo injection molding machines are widely used in modern stationery factories.

A stable machine can help manufacturers:

✅ Increase output
✅ Reduce energy consumption
✅ Improve product quality
✅ Lower production costs

Aimate Injection Molding Solutions for Pen Production

AIMATE is a China-based injection molding machine manufacturer specializing in high-efficiency solutions for:

· Pen & stationery production

· Cable tie manufacturing

· PET preform production

· Plastic packaging applications

Our high-speed injection molding machines are designed for stable operation, fast cycle times, and multi-cavity mold production.

We provide customized injection molding solutions according to different product requirements and production capacities.

If you are looking for a reliable injection molding machine supplier for pen production, feel free to contact us for machine recommendations and technical support.

www.aimate-machine.com

See plastic cup production video more on youtube