PE Film Liner Bag Machine | Cut, Insert & Sew in One Step

In the world of industrial packaging, woven polypropylene (PP) and polyethylene (PE) bags remain a durable, cost-effective solution for transporting bulk materials. But for moisture-sensitive products like fertilizers, chemicals, grains, or powders, an added layer of protection is required: an inner liner. Traditionally, inserting a PE liner into each bag was a labor-intensive step. But now, PE film cutting, inserting, and sewing machines—like the PS-CIS750—are transforming this process with automation and precision.

Why Liner Bags Are Essential

Woven bags are strong, lightweight, and breathable. However, without a liner, they offer little protection against moisture, contamination, or leakage. That’s where PE film liners come into play. These thin sheets of polyethylene are placed inside the woven bag, forming a protective barrier that:

• Prevents product leakage

• Blocks moisture and contamination

• Improves hygiene and shelf-life

• Meets regulatory requirements for food or chemical products

Inserting these liners manually can slow production and introduce quality issues. Automation is the future.

Enter the All-in-One PE Film Cutting, Inserting & Sewing Machine

Modern machines like the PS-CIS750 integrate three essential functions into a single unit:

1. PE Film Cutting

2. Liner Inserting into Woven Bags

3. Bottom Sewing for Final Sealing

Instead of three separate stations or multiple operators, manufacturers can now automate the entire liner bag process on a compact, efficient platform.

How It Works: Step-by-Step

1. Precise PE Film Cutting

The machine unwinds PE film from a roll and cuts it into precise lengths, guided by a PLC-controlled servo system. This ensures every liner fits perfectly, minimizing waste and inconsistencies.

2. Automated Liner Inserting

Once cut, the film is guided and inserted into a pre-opened woven bag. This step used to be manual, requiring trained staff and plenty of time. Now, it’s hands-free, consistent, and fast.

3. Bottom Sewing and Final Touch

After the liner is placed, the bag’s bottom is sewn shut using industrial-grade stitching, securing both the woven exterior and PE interior in a single pass. This guarantees a tight seal and structural integrity.

Benefits for Manufacturers

✅ Efficiency Boost
Automating three steps into one machine drastically reduces cycle times and labor costs.

✅ Improved Consistency
Human error in liner placement or stitching is eliminated, leading to higher-quality products.

✅ Reduced Waste
Accurate cutting and insertion mean fewer discarded materials and less rework.

✅ Compact Footprint
A single machine takes up less space than three standalone units or manual workstations.

✅ High Output
Machines like the PS-CIS750 can handle up to 20 bags per minute—ideal for bulk orders.

Industry Applications

The use of PE film liner inserting machines is rapidly expanding across multiple industries:

• Chemical Packaging: prevents chemical leaks and reactions with moisture.

• Fertilizers: protects against clumping and spoilage.

• Food Packaging (e.g., rice, flour, sugar): ensures hygiene and shelf stability.

• Construction Materials (cement, sand): keeps materials dry and contained.

• Feed and Agriculture: reduces spoilage and infestation.

Anywhere where moisture or contamination can damage the product, liner bags are the solution—and automated machines are the tool.

Challenges Before Automation

Prior to adopting cutting/inserting/sewing machines, manufacturers faced:

• Slow production due to manual liner placement

• Labor shortages or high labor costs

• Quality issues from inconsistent liner positioning

• Difficulty meeting hygiene or export standards

Now, smart automation provides an answer to all of the above—while keeping costs down in the long term.

What to Look for in a Machine

If you’re considering upgrading your factory, look for:

• Compatibility with multiple bag sizes

• Customizable liner lengths

• Reliable stitching/sealing mechanisms

• Easy-to-use control interface

• Stable performance over long production runs

Choosing a machine like PEASHIN’s PS-CIS750 ensures your system is future-ready, with minimal downtime and optimal output.

Conclusion

As demand grows for cleaner, safer, and more efficient packaging solutions, PE film cutting, inserting & sewing machines are becoming essential in modern factories. They offer the speed, precision, and quality assurance that today’s markets demand—while freeing up labor and space for higher-value tasks.

For manufacturers of woven PP or PE bags, investing in this kind of automation is more than a convenience—it’s a competitive necessity.

In the world of industrial packaging, woven polypropylene (PP) and polyethylene (PE) bags remain a durable, cost-effective solution for transporting bulk materials. But for moisture-sensitive products like fertilizers, chemicals, grains, or powders, an added layer of protection is required: an inner liner. Traditionally, inserting a PE liner into each bag was a labor-intensive step. But now, PE film cutting, inserting, and sewing machines—like the PS-CIS750—are transforming this process with automation and precision.

Why Liner Bags Are Essential

Woven bags are strong, lightweight, and breathable. However, without a liner, they offer little protection against moisture, contamination, or leakage. That’s where PE film liners come into play. These thin sheets of polyethylene are placed inside the woven bag, forming a protective barrier that:

• Prevents product leakage

• Blocks moisture and contamination

• Improves hygiene and shelf-life

• Meets regulatory requirements for food or chemical products

Inserting these liners manually can slow production and introduce quality issues. Automation is the future.

Enter the All-in-One PE Film Cutting, Inserting & Sewing Machine

Modern machines like the PS-CIS750 integrate three essential functions into a single unit:

1. PE Film Cutting

2. Liner Inserting into Woven Bags

3. Bottom Sewing for Final Sealing

Instead of three separate stations or multiple operators, manufacturers can now automate the entire liner bag process on a compact, efficient platform.

How It Works: Step-by-Step

1. Precise PE Film Cutting

The machine unwinds PE film from a roll and cuts it into precise lengths, guided by a PLC-controlled servo system. This ensures every liner fits perfectly, minimizing waste and inconsistencies.

2. Automated Liner Inserting

Once cut, the film is guided and inserted into a pre-opened woven bag. This step used to be manual, requiring trained staff and plenty of time. Now, it’s hands-free, consistent, and fast.

3. Bottom Sewing and Final Touch

After the liner is placed, the bag’s bottom is sewn shut using industrial-grade stitching, securing both the woven exterior and PE interior in a single pass. This guarantees a tight seal and structural integrity.

Benefits for Manufacturers

✅ Efficiency Boost
Automating three steps into one machine drastically reduces cycle times and labor costs.

✅ Improved Consistency
Human error in liner placement or stitching is eliminated, leading to higher-quality products.

✅ Reduced Waste
Accurate cutting and insertion mean fewer discarded materials and less rework.

✅ Compact Footprint
A single machine takes up less space than three standalone units or manual workstations.

✅ High Output
Machines like the PS-CIS750 can handle up to 20 bags per minute—ideal for bulk orders.

Industry Applications

The use of PE film liner inserting machines is rapidly expanding across multiple industries:

• Chemical Packaging: prevents chemical leaks and reactions with moisture.

• Fertilizers: protects against clumping and spoilage.

• Food Packaging (e.g., rice, flour, sugar): ensures hygiene and shelf stability.

• Construction Materials (cement, sand): keeps materials dry and contained.

• Feed and Agriculture: reduces spoilage and infestation.

Anywhere where moisture or contamination can damage the product, liner bags are the solution—and automated machines are the tool.

Challenges Before Automation

Prior to adopting cutting/inserting/sewing machines, manufacturers faced:

• Slow production due to manual liner placement

• Labor shortages or high labor costs

• Quality issues from inconsistent liner positioning

• Difficulty meeting hygiene or export standards

Now, smart automation provides an answer to all of the above—while keeping costs down in the long term.

What to Look for in a Machine

If you’re considering upgrading your factory, look for:

• Compatibility with multiple bag sizes

• Customizable liner lengths

• Reliable stitching/sealing mechanisms

• Easy-to-use control interface

• Stable performance over long production runs

Choosing a machine like PEASHIN’s PS-CIS750 ensures your system is future-ready, with minimal downtime and optimal output.

Conclusion

As demand grows for cleaner, safer, and more efficient packaging solutions, PE film cutting, inserting & sewing machines are becoming essential in modern factories. They offer the speed, precision, and quality assurance that today’s markets demand—while freeing up labor and space for higher-value tasks.

For manufacturers of woven PP or PE bags, investing in this kind of automation is more than a convenience—it’s a competitive necessity.