Small sized finished paper bags are compressed and shaped by bundling | Double belt simultaneously with 2 belts for 2.5 seconds per belt

1、 Industry background and pain points

The paper bags referred to here are small-sized finished packaging bags such as coffee bags, pizza bags, and burger bags - the kind of takeaway packaging tote bags that chain coffee, fast food, and tea brands use every day. The finished small paper bags made by paper bag factories and printing and packaging factories are folded neatly and tied into bundles according to a fixed number before leaving the factory. The bundles are then sent to brand owners and various stores. The tightness and solidity of this bundle directly determine whether it can be stacked higher and loaded into the container, as well as whether it will become loose during transportation.

This small paper bag has a soft body: after folding, it is fluffy, has a large rebound, and the bag surface is still smooth. The factory bundling of paper bags has always been done manually - without the step of applying pressure, workers directly use ropes or strapping to tie a stack of paper bags in several layers. The problem with manual bundling is very real: firstly, there is no pressure at all, and the overall foam of the bundled material is loose and not solid, resulting in a bundle volume that is much larger than the actual material; The second is that the tightness depends entirely on the hand feel. The tightness of several straps in the same bundle may be different. After bundling, releasing them, entering storage and transportation, the force is uneven, and the bag slowly rebounds and the bundling type becomes looser as it moves. For export factories, these two points are stacked together in a deadly way - container loading is calculated by volume, and loose bundling is equivalent to paying extra shipping fees for nothing. The container is not stacked high, not stuffed enough, and it is easy for packages to fall off on the road, resulting in customers receiving a pile of loose bags. In addition, manual labor can only be done one by one, so if you need to tie two straps, you have to tie them twice, and each bundle takes several minutes to tinker with. The peak shipping season is stuck in this link.

A small paper bag also has one thing: it is a typical "dumping" - the paper is light and fluffy, with the same number of strips, there is a large difference in volume between compacted and non compacted: if it is not compacted, it will be tied up and fluffy, and if the warehouse is not stacked high or the container is not full, it is equivalent to buying a bundle of air with storage area and shipping cost. So the real approach is two-fold: first compact it, and then finish the belt at once.

2、 Product Features and Workflow

The dual belt pressure strapping machine simultaneously completes "pressurization" and "strapping" on one device: a pressurization cylinder (cylinder diameter 80mm, stroke 800mm) is installed above the table, which drives the pressure plate to descend and compact the folded paper bags; After compaction is in place, there is no need for manual handling, and the machine automatically completes the bundling - the double belt can simultaneously tie 2 belts, and the two belts are formed together after one program is completed; It can also be tied up as needed, and single machine operation is equally convenient.

The workflow is as follows: manually place the folded finished paper bags (bundled by the number of strips) on the flat table → push them into the pressure station → the cylinder drives the pressure plate to press downwards (with a stroke of 800mm) → start the bundling with a foot pedal, and tie two strips simultaneously on the double belt conveyor → automatic bundling → the pressure plate rises → manually push them out and enter the next bundle.

The tabletop is a flat structure, with a height of 790-850mm that can be adjusted freely; The bundling strength can be adjusted from 1 to 9 levels, the hot stamping temperature is constant, and it has a packing counting function. It can also press and tie loose and thrown goods. At present, loading and unloading are done manually, and automatic loading and unloading can be modified as needed.

3、 Product parameters (paper bag double belt pressure strapping machine)

4、 Homework method

The standard configuration is manual loading and unloading: the folded finished paper bags are manually loaded onto the flat tabletop, pushed into the pressurization station, and after pressurization and bundling are completed, pushed out. One person can operate it, suitable for mixed production of multiple specifications and medium to low batches; Automatic loading and unloading modifications can be made as needed.

5、 Data comparison

6、 Advantages of the plan

1. Double lane with 2 strips at a time: the two strips are formed together, and the beat is halved compared to a single lane; Two bands are symmetrically subjected to force, making bundling more stable and not skewed. It can also be bundled and operated individually as needed.

2. First press and then tie: The pressure cylinder drives the pressure plate to descend and compact before tying. Loose and loose items such as folded paper bags can also be tightly tied without bulging.

3. Container loading is more cost-effective: after compaction, bundling with the same number of bundles results in a smaller volume - export container loading allows for more loading and less shipping costs; The bundling type is compact and not loose, and it is not easy for the package to fall off during long-distance transportation and multiple transfers.

4. The tightness of the bundling is controllable: the strength can be adjusted from 1 to 9 levels, the temperature of the hot stamping head is constant, and the tightness of each strip is consistent, without relying on hand feel; The problem of uneven elasticity and later rebound in manual bundling is no longer present.

5. Binding speed: Automatic bundling after pressure is applied, 2.5 seconds per pass - manual bundling can only be done one pass at a time, and two straps need to be tied twice, saving the entire shipping cycle time.

6. Provincial personnel and workstations: pressurization and bundling are completed on the same equipment, without the need for a separate pressurization process, and the bundling workstation can be done by one person.

7. Reliable control and drive: Fanyi PLC control board+human-machine interface, 2 sets of servo motors for the whole machine (M1 hot melt shearing and pressing, M2 belt feeding and pulling), stable operation.

8. Counting and leaving traces: equipped with packaging counting function, the number of shipped points does not need to be manually counted; The bundling parameters can be stored and checked on the touch screen.

7、 Applicable objects

The bundling station for finished small paper bags in paper bag factories and printing packaging factories (such as coffee bags, pizza bags, hamburger bags, takeaway packaging bags, etc.); Packaging and printing enterprises supplying chain coffee, fast food, and tea beverage brands, bundling and packaging before shipment; Especially suitable for pressure shaping and packaging of small paper bags before export and container loading, as well as pressure strapping and storage turnover shaping and packaging of loose and thrown goods. The loading and unloading process is currently manual, suitable for mixed production of multiple specifications and medium to low batches.