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August 20, 2015

PTW-1200 SERIES - Open-Mouth Bagger

The PTW-1200 Series Automatic Open-Mouth Bagger (patent pending) is a highly efficient system that has been designed to easily run porous polywoven bags, which are often used in manual bagging operations.

The PTW-1200 offers a new, innovative solution for improved bag separation. Its new technology combines two complementary systems to separate bags at both ends. This is a dependable and efficient solution for porous polywoven bags that could stick together because of static electricity, twisted thread and other reasons. The PTW-1200’s innovative way to feed bags into an automatic bagger has been merged with the proven robotic full-bag exit system, producing a fully automatic bagging solution that replaces a manual equipment line.

This bagger is equipped with devices that detect bag thickness, bag-on-spout placement and an open bag at every step of the process. These detectors spot a closed or misplaced bag on the spout as well as multiple bag picking, allowing the machine to reject these bags automatically without stopping the bagging process.

All these features are designed to optimize production despite the irregular properties of porous polywoven bags.


The PTW-1200 Series bags granular free-flowing product such as grain, rice, seed and feed in porous polywoven and oversized bags.

Features and benefits

• Effectiveness and optimum throughput thanks to reliable automatic rejection of defective bags.
• Small footprint optimizes floor space.
• Compact design allows shipping in one block and quick installation.
• FANUC robot assures reliability and precision.
• All parts in direct contact with the product are made of polished 304 stainless steel.
• Detection system checks bag placement on spout to avoid spillage.
• Intelligent thickness detector rejects multiple bag picks.
• Tilt spout avoids conflict with bag placer and robot, and increases achievable speed.
• All motors in bagger are either VFD or servo-controlled for best precision and reliability.


• Outfeed conveyor with motorized adjustable legs (8,10,12,14 or 16 feet)
• Extended belt for tag placer

Production rate

20 bpm with 25 kg (55 lb), 16 bpm with 50 kg (110 lb)

Technical data

Typical Equipment Dimensions: Length: 137’’ (3470 mm)
Width: 101’’ (2552 mm)
Height: 86’’ (2170 mm)
Bag specifications: Material: Laminated and porous woven PP
Type: Pillow and gusseted open-mouth bags
Width: 356 mm to 660 mm (14” to 26”),
610 mm (24”) when tabs are present
Length: 610 mm to 1118 mm (24” to 44”)
Bag weight: Up to 50 kg (110 lb)
Bag closing type: Compatible with any external in-line closer
Bag magazine capacity: Up to 300 bags (depending on thickness)
Unfold gusset dimension: 152 mm (6”) maximum
Electrical requirements: 460 V / 3 Ph / 60Hz
Control system: Allen Bradley CompactLogix
Standard HMI: Allen Bradley PanelView Plus 700 (7”) color touch screen
Pneumatic components: SMC Pneumatics

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Over the years, Premier Tech's (PT) products earned worldwide recognition because of their durability and reliability. In fact, most of the time, machines built by our team will run for several decades after they have been installed.