Bag Openers

Electric or hydraulic drive — from 22 to 314 kW

SatrindTech bag opener shredders are designed for the primary reduction of bulky and resistant materials, with an emphasis on productivity and the ability to handle high-volume waste streams. Unlike grinders, shredders do not aim for controlled particle size but for maximum volume reduction in the shortest possible time: the material is torn, opened, and reduced to manageable sizes for subsequent treatment stages.

The bag opening function is a fundamental feature of this category: low-speed, high-torque blades effectively open waste bags without pulverizing the contents, preserving the integrity of materials for subsequent separation and sorting operations. The range covers power ratings from 22 to 314 kW with working chambers up to 2700×1500 mm, capable of processing up to 60 t/h of municipal solid waste — the reference solution for mechanical-biological treatment (MBT) plants and sorting platforms.

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Applications / Materials

SatrindTech bag opener shredders are primarily used in waste treatment plants that require high productivity in the primary reduction stage, before material separation and sorting.

Municipal waste icon Municipal solid waste (MSW)
Bulky waste icon Bulky waste
Organic waste icon Organic waste
Wood icon Wood
Electronic waste icon Electronic components / WEEE
Glass icon Glass

Technical Specifications

The bag opener shredder range is structured in three models that progressively cover increasing power ratings and capacities, from medium-sized plants to large MSW treatment platforms.

K30T — Compact Bag Opener Shredder

Twin-shaft shredder designed for heavy-duty applications, capable of processing bulky materials with robustness, reliability, and operational continuity.

T20 — High-Productivity Bag Opener Shredder

Industrial shredder designed for pre-shredding heterogeneous materials, with high robustness and operational continuity.

T30 — Maximum Capacity Bag Opener Shredder

Industrial shredder designed for pre-shredding heterogeneous and bulky materials, with robustness, operational continuity, and high reliability.

Safety and Reliability

SatrindTech bag opener shredders are designed and manufactured in compliance with the European Machinery Directive. The structural robustness is dimensioned for the impulsive stresses typical of high-volume heterogeneous waste processing, with particular attention to protecting the shafts and transmission system.
  • Automatic overload protection system: Automatic shaft reversal in case of non-shreddable material (e.g., heavy metals, inert materials), with cycle resumption without operator intervention and mechanical protection.

  • Access panels with safety microswitches: Automatic shaft shutdown when any access panel to the working chamber is opened.

  • Low-speed, high-torque blades: The reduced rotation speed ensures effective bag tearing without pulverizing the contents, preserving material quality for downstream sorting.

  • Heavy-duty steel frame: Load-bearing structure dimensioned for the stresses of bulky and heavy materials, with long-lasting reliability even in 24-hour cycles.

  • Hydraulic drive with safety valve: On T20 and T30 models, the maximum pressure valve protects the system in case of sudden blockage from non-shreddable material.

  • Integrated electrical panel with PLC: Automatic work cycle management, operational parameter monitoring, and interface for integration into plant supervision systems.

Bag Openers

Plant Integration

SatrindTech bag opener shredders are designed as the first treatment stage in waste management plants, in combination with material separation, sorting, and recovery systems.

Do you have a specific application?

From technical consultancy to shredding tests at our facility: we guide you in selecting the most suitable solution for your process.

Contact us to speak with one of our technicians or to schedule a shredding test with your material.