At PolyPlas, we don’t just manufacture garbage bags — we engineer them. Every roll of our high-quality garbage bags is the result of a tightly controlled, uninterrupted production process designed for strength, consistency, and sustainability. Using advanced extrusion, sealing, perforation, and coreless roll winding technology, we meet the performance expectations of Europe’s most demanding B2B buyers — while using 100% recycled polyethylene.

Here’s how we make it happen.

1. Seamless Film Tube Extrusion

It starts with tubular blown film, produced from premium-grade recycled LDPE. The seamless tube structure eliminates side welds and reduces failure points. Integrated side gussets allow for optimal expansion in bins, reduce bottom stress, and improve compatibility with star-seal configurations.

We maintain tight thickness tolerances across the entire film width using closed-loop feedback and in-line sensors. This consistency is critical for downstream weld integrity, roll uniformity, and CHSA-standard compliance.

2. Continuous Sealing, Perforating & Breaking – No Interruptions

Our uninterrupted bag making and folding line converts the tubular film into finished bags without stop-start cycles. Every key phase — sealing, perforation, bag separation, and folding — is done in one pass, with all movements synchronized via PLC-driven servo motors.

Key stations include:

• High-speed bottom sealing unit: Applies heat-welds across multiple gusset layers using temperature-controlled upper and lower sealing platens. Servo-driven nip rollers and reciprocating platforms ensure seal stability even at maximum output speed.
• Rotary perforation unit: A die cutter forms clean, consistent tear lines. Micro-adjustments allow the perforation depth to be fine-tuned based on bag gauge.
• Breaking unit: Air-assisted pull-off wheels apply differential speed to cleanly separate bags from the film at the perforation line — no tearing, no jams.

These steps are executed at a constant web speed, increasing throughput while preserving dimensional accuracy and film alignment.

3. Automated Folding & Roll Configuration

Once separated, bags are automatically folded using a three-stage folding unit with:

• Vertically and laterally moving blades
• Precision folding wheels
• Servo-controlled timing for consistent crease formation

This process produces tightly packed stacks that reduce shipping volume, optimize warehouse space, and increase operational efficiency for clients.

4. High-Speed Coreless Roll Winding

For B2B clients needing rolls instead of stacks, our system integrates a next-generation turret-based coreless winder.

How it works:

• Two parallel turrets (subsections) handle dual film streams.
• Each turret has four spindles that rotate and retract independently.
• Rolls are formed by winding perforated bags directly onto cylindrical spindles without cores.
• Air nozzles and vacuum-assisted spindles initiate winding cleanly and ensure the first bag adheres perfectly.
• Once a roll is complete, pressurized air expands the spindle slightly, allowing the roll to slide off without deforming.

The turret rotates the next empty spindle into place without pausing the line. This enables non-stop production with minimal footprint and rapid changeovers.

Finished rolls are discharged to a central conveyor — from both turrets — for downstream packaging or wrapping. This layout allows for compact machine architecture and single-side roll retrieval.

5. Designed for Recycled Material, Built for Strength

Our entire production system is engineered to handle 100% recycled PE, without compromising on performance. Key advantages include:

• High-strength star seals for maximum leak resistance
• Optimized processing temperatures and weld pressures for recycled film
• Stable gauge control across variable-quality input resin
• Fully recyclable waste streams reintroduced into production

Whether flat-packed or on coreless rolls, our garbage bags are built to perform under pressure — and built sustainably.

6. Full Automation and Quality Assurance

All units are centrally managed via a networked control unit, coordinating:

• Film feed rate
• Tension balancing
• Servo timing
• Weld dwell
• Air/vacuum transitions
• Folding blade sequencing

This system ensures that every bag meets target specs for size, thickness, tear resistance, and sealing quality. Real-time error detection reduces waste and keeps every pallet within tolerance.

Why PolyPlas?

• CHSA-standard, fully recyclable garbage bags
• Produced with 100% recycled polyethylene
• Consistent thickness, strength, and seal integrity
• Available in loose stacks or coreless rolls
• Tailored to your private label packaging needs
• Backed by high-speed, low-waste automation

Looking for a Supplier of Reliable, Eco-Friendly, High-Quality Garbage Bags?

Let’s talk. PolyPlas delivers not only precision and sustainability — we deliver at industrial scale, with short lead times, low MOQs, and responsive customer service.

Contact us now to request a sample roll or discuss your specifications.