Bag Closer: Pinch Open Mouth Bag Closer

Automate/Eliminate Manual Repetitive Tasks Of Sealing Plastic Liners And Closing Paper Open-Mouth Bags. For sealing stepped end bags and inner liners. Increase efficiency in your production processes.

AWE’s Pinch Bag Closer (PBC) is suited for sealing stepped end bags which have a pre-applied, hot melt adhesive strip positioned along the top flap of the bag. The PBC can reduce or eliminate the need to manually perform repetitive tasks of hermetically sealing the plastic inner liner sealing the stepped end (top flap). It uses HEAT and PRESSURE to seal and close your bags, performing 2 primary functions:

- The PBC seals the inner plastic liner within a multiwall bag.
- The PBC closes by reactivating (melting) the pre-applied hot melt adhesive on the stepped top edge of the bag and then
folds it over to form a closure.

The heat, pressure and time are electronically controlled from the HMI Screen.

1. The bag slides along on either gravity rollers or conveyors and the top of the bag is positioned centrally in the PBC.

2. Once the foot switch or push button is engaged, the PBC controls take over. The bag faces are flattened together and heat from the seal bar is applied to the bag. Cooling occurs and a hermetic seal is formed for inner liner.

3. Once the top edge of the bag hits the bag stop plate, a fold line is formed which is incorporated into the sealing bar. The folding plate rotates to 80° folding the top 40-50mm of the bag with a parallel fold.

4. Finally, the folding plate rotates back applying pressure to the molten adhesive and then cools, bonding with the paper, creating a siftproof bag. The hot melt adhesive bonds to the paper to produce high-integrity barrier seals, eliminating the need for costly over-wraps.

This results in a hermetically sealed bag which is commonly used in food products, toxic products or products that are hydroscopic. Widely used to package fine powder products, milk powders, premium pet foods, premix food products, animal feeds, chemical and hazardous products.

FEATURES & BENEFITS:
- Easy clean out and changeover for different-sized bags
- Suited for agricultural applications, building materials/aggregates, chemicals, food, minerals, pet/animal food & pharmaceutical, industries, day in and day out
- Universal and industrial components give the machinery extra long life cycles and parts being readily available from multiple suppliers- the way machinery should be built
- Manufactured to comply above and beyond Australian Standards
- Pneumatic and electrical control equipment are protected in a positive-pressure housing, eliminating concerns about dusty
environments
- The Control System is based on the latest PLC technology and is linked to a touch screen HMI
- Operator-friendly, easy set-and-forget controls. The control panel enables operators to test all functions of the machine and provides diagnosis and easy troubleshooting capabilities
- Quick and easy commissioning is facilitated by single-piece shipping and factory pretesting. The PBC is shipped pretested with seal temperatures and times that are suitable for most 2-ply and 3-ply bags
- Simply uncrate the equipment, plug it in, connect the air and power supply, and you’re ready to go
- PBC is fully adjustable allowing for various bag sizes, conveyors and heights
- This PBC can be upgraded to link to further automated bagging systems. Our modular design adapts to the changing needs of your bulk packaging by integrating with automatic bag formers, neck stretchers, feed systems, conveyors, and further automation
- 620mm folder section for smooth, wrinkle-free folds
- Height adjustable floor stand allows bag length variance by 200mm (standard)
- Stainless steel provides corrosion resistant construction, suitable for food standard quality
- Breakaway feature for easy service (no tools required)
- PBC series Pinch Bag Closer is designed to work with your new or existing production line

BAG DESIGNS SUITED FOR THE PBC:
If you’re using a Pinch Bag Closer & Sealing System, the sack quality will have a direct influence on your overall productivity. Using cheap inferior sacks will cause inconsistent results.

- PBC Pinch Bag Closer is designed to handle stepped end bags up to an overall width of 620mm.
- The PBC can take bags of various lengths and has 200mm height adjustable legs. The critical factor in bag length is making sure it is long enough to fit the contents with enough head space (recommended 100mm).

You can expect your Pinch Bag Closer to process up to 3 two-ply paper bags per minute. The sealing speed may vary depending on factors such as conveyor speed, operator’s speed and experience, thickness of the bag’s ply, and the type of glue used.

The Pinch Bag Closer is designed to seal and close stepped end bags, which can include flat tube, gusseted, and bags with block or pinch type bottoms.

A pinch bag is a multi-wall paper bag, open mouth, stepped end and pre-glued. With these bags, the glue is pre-applied during the production of the bag itself and then reactivated after filling by heat during the closing process. Pinch bags provide sift-proof integrity.

The sift-proof systems prevent the product escaping while protecting the product against contamination from foreign particles, insects or moisture. If you’re using unlined bags, the sealing function on the PBC is not required and the machine only closes the bag. (‘Close only’ as a setting in the HMI Screen)

These stepped-end bags typically have a fold-over ranging between 40mm and 50mm, although the exact dimension may vary slightly among bag manufacturers. It is recommended to consult with the bag manufacturer to determine the ideal fold-over dimension for your specific bag.

The type of liner can be adjusted to suit the specific application. While single-layer polyethylene liners are common, there are also options available such as multi-layer co-extruded films, barrier films, and polyethylene liners with enhanced sealing properties against contamination.

SPECIFICATIONS:
Model PBC (Pinch Bag Closer)

Speed: Up to 3 sacks per minute

Suitable bag dimension:
Width: 620mm (max)
Height: 956mm ± 100mm
adjustable up to 200mm

Freeboard above product 150mm

Bag types
POBM, (POM - Option) flat stepped
end bags up to 250 with single layer
polyethylene liners

Air consumption
Needs clean, cool dry air supplied at
80PSI (5.52bar) at 27litres
(1CuFM) per cycle

Power 240VAC 50Hz 15A single phase, Other power configurations available

Weight 150kg