Bag opening machines for MSW

The units operate as part of a waste sorting and processing line, designed for preliminary tearing/opening of bags containing municipal solid waste (MSW) arriving at sorting facilities.

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Mikhail

Mikhail

FAQ
Modern MSW sorting lines typically include a bag breaker unit as standard equipment. This device pre-processes incoming waste by removing primary packaging materials, significantly enhancing sorting efficiency.

Operating Principle of the Bag Breaker Unit

The bag breaker is a critical component in municipal solid waste (MSW) sorting lines, designed to mechanically open plastic waste bags prior to sorting. Its operation follows a robust, multi-stage process:

Material feeding:

  • Waste bags are loaded into the feed hopper using front-end loaders or grapple systems.
  • The Moving Floor conveyor system (impact-resistant design) ensures steady material flow to the breaker unit, compensating for uneven loading.

Bag rupture phase:

  • Bags are dragged into the breaker module by a segmented hydraulic drum, which rotates according to a programmed algorithm to optimize tearing efficiency.
  • A press comb assembly applies controlled downward pressure, pinning bags against the drum.
  • The combined action of the drum’s rotation and comb pressure ruptures ≥95% of bags, releasing waste for downstream sorting.

Output & integration:

  • Opened waste is discharged onto the main conveyor belt for subsequent sorting (e.g., trommels, optical sorters).
  • Intact bags or oversized items are redirected for manual intervention or secondary processing.

Key advantages:

  • High efficiency: guaranteed bag rupture rate minimizes manual labor.
  • Durability: impact-resistant construction withstands heavy loader operations.
  • Precision control: hydraulic adjustments for combs/drum adapt to variable bag sizes and waste compositions.