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8 Heald Rd. Ingleburn, NSW 2565
7 Darnick St. Underwood QLD 4119
37 Barrie Rd. Tullamarine, VIC 3043
27 Rhur St. Dandenong Sth, VIC 3175

Pinch Bag Closer For Open Mouth Bags

Automate/Eliminate Manual Repetitive Tasks Of Sealing Plastic Liners And Closing Paper Open-Mouth Bags

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Simplify the need for manual sealing of plastic liners and closure of paper open-mouth bags, reducing repetitive tasks.

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:
  1. The PBC seals the inner plastic liner within a multiwall bag.
  2. 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.
  • The bag slides along on either gravity rollers or conveyors and the top of the bag is positioned centrally in the PBC.
  • 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.
  • 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.
  • 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.
  • 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
  • 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

Pinch Bag Closer is suitable for bags of various lengths and has 200mm height adjustable legs

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.

WHAT BAGS CAN BE USED IN THE PINCH BAG CLOSER?

Your bag suppliers are experts at designing the correct bag for your application. Before beginning production, QUALITY CONTROL checks on actual bags to be used should be done with both empty and full bags.

Can seal all types of linear materials by adjustment of heat and time

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 250mm with single layer polyethylene liners
Air Consumption Needs clean, cool dry air supplied at 80 PSI (5.52bar) at 27 Litres (1CuFM) per cycle
Power 240VAC 50Hz 15A single phase (other cower configuration available)
Weight 150kg

ORDERING:

Your PBC comes with:
  • HMI touch screen controls
  • 200-250VAC power supply configuration (other power configuration available upon request)
  • Foot switch for activation

Pinch Bag Closer For Open Mouth Bags

Reduce Or Eliminate The Need To Manually Perform Repetitive Tasks Of Sealing The Plastic Inner Liner With A Hermetic Heat Seal And Closing The Paper Open Mouth Bags

Enquiry Form

We will get in touch with you shortly

Sealing Your Sack Could Not Be Any Easier.

 

Pinch Bag Closer PBC Series

 

AWE’s Pinch Bag Closer PBC Series can reduce or eliminate the need to manually perform repetitive tasks of sealing the plastic inner liner with a hermetic heat seal and closing the paper open mouth bags. The Pinch Bag Closer seals multi-wall paper bags with a fast and reliable process. The Pinch Bag Closer is capable of handling Stepped End Bags, which have a pre-applied, hot melt adhesive strip positioned along the top flap of the bag. The Pinch Bag Closer folds the flap and then heat & pressure are applied, to seal and close bag. Your bag is now sift-proof.

 

Your PBC Series Pinch Bag Closer uses HEAT and PRESSURE to seal and close your bags. The Pinch Bag Closer is designed to perform 2 primary functions: Seals the inner plastic liner within a multi-wall bag.


Close reactivates (melt) reapplied hot melt adhesive on the stepped top edge of the bag and then folds this over to form a closure.


The heat, pressure and time are electronically controlled from the HMI Screen. The bag slides along on either gravity rollers or conveyors and the top of the bag is positioned manually in the infeed guides and continues along the conveyor until bag is positioned centrally. Once the foot switch or push button is engaged the PBC controls take over, the bag faces are flattened together by the mating faces to ensure even pressure and correct alignment.

 

To fuse an inner poly liner of a multi-wall paper bag requires heat from the seal bar which has 2 elements in the aluminium heated die. This process is controlled by a temperature control module within the PLC. Once the top edge of the bag hits the bag stop plate, the fold line is formed against the stainless steel folding blade which is incorporated into the sealing bar. The folding plate rotates to 80° folding the top 40-50mm (1½” – 2”) of the bag with a parallel fold.

 

Finally the folding plate rotates back, applying pressure to the molten adhesive and then it to cools, bonding with the paper, creating siftproof bag. The Hot melt adhesive bonds to the paper and fill gaps to produce high-integrity barrier seals, eliminating the need for costly over-wraps or bags. This results in a hermetically sealed bag and is commonly used in toxic products or products that are hydroscopic. Widely used to package fine powder products, premium pet foods, premix food products, animal feeds, chemical and hazardous products.

 

The closed sealed bag is then transferred to a non-stick compression belt section, providing a well fused seal.

 

For Sealing Your Open Mouth Bags

 

For best results, make sure the bag is central in the PBC to ensure the sealing bar has contact with the entire face of the bag. A good closure should have ‘fibre tear”. That is, the paper should tear, rather than the adhesive releasing when the closure is opened. The Pinch Bag Closer is designed to operate with one of the smallest head spaces of any sealer available, but it still needs some head space above the product for efficient operation.

 

Note: Insufficient head space (ullage) to the unfilled space in a container of liquid above the product will make sealing and closing difficult, if not impossible. The correct bag size is therefore required to suit the product density/dustiness.

  • Easy clean out and changeover for different sized bags
  • Universal and industrial components give themachinery 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.
  • You don’t have to worry about dusty environments because your pneumatic and electrical control equipment are protected in positive pressure housing.
  • The Control System is based on the latest PLC technology, linked to touch screen HMI
  • Operator friendly easy set and forget controls, allows operator to test all functions on the Pinch Bag Closer.
  • Quick and easy commissioning due to single piece shipping and factory pretesting, the PBC is shipped pretested with seal temperatures and times that will suit MOST 2 ply and 3 ply bags.
  • Just uncrate plug and connect air and power and your 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, Our equipment can integrate with automatic bag formers, neck stretchers, feed systems,conveyors, and further automation.
  • 620mm wide mouth suits most bag widths.
  • 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.
ModelPBC (Pinch Bag Closer)
SpeedUp to 3 Sacks per minute
Suitable Bag DimensionHeight: 956mm +_ 100 mm adjustable up 200mm
Freeboard Above Product150mm
Bag TypesPOBM, (POM – Option) Flat Stepped End Bags up
to 250mm With single layer polyethylene liners
Air ConsumptionNeeds clean, cool dry air supplied at 80 PSI (5.52
bar) at 27 Litres (1 CFM) per cycle
Power240V AC 50 Hz 15 Amps Single Phase (Other
Power configuration available)
Weight150 kg