Difference between revisions of "Plastic pouch bag making machine"

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'''Plastic Pouch Bag Making Machines''' are a sub-category of the [[Bag Making Machine| Plastic Bag Making Machines]] nevertheless they are discussed in a separate article, as the underlying technology of the two bag making types are different.  As the last unit of the converting line, bag machines process the printed and slitted plastic roll-film.  
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'''Plastic Pouch Bag Making Machines''' are a sub-category of the [[Bag Making Machine| Plastic Bag Making Machines]] nevertheless they are discussed in a separate article, as the underlying technology of the two bag making types are different.  Also, the properties of the bags produced by the two machines are different. Pouch bag are usually three-side sealed whereas the bags produced bag making machines are either bottom or side sealed (one-, or two-side sealed.)
  
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Plastic bag making machines produce bags that are either side sealed, or bottom sealed (sometimes referred to as bottom weld / bottom welded.) For both the bottom sealed bag and the side sealed bag, the main input material of the bag making process is two-layer roll-film.  For the bottom sealed bag machines the input film is tubular shaped. On the other hand, for the side sealed bag machines, the input film is a single-layer roll film that is folded up to two layers by a v-shaped banding frame at the front end of the bag machine.  
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In general pouch bags have higher barrier properties than regular bags. For instance pouch bags are used for food and medical packaging whereas high level liquid, light, oxygen, or heat barrier properties are required. The given barrier property is required both relative to the quality of the film the bag is made of and the quality of welding or sealing.  
  
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There are three-side sealed plastic bags beyond the bottom- and side sealed bags. These bags have usually different properties from the later types and are manufactured by machines that have different process steps than the regular bag making machines. The machines producing three-side sealed bags are discussed in a separate article titled [[Plastic pouch bag machine|Pouch bag machine]].
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The input material of the pouch bag making machines is two layers of printed, slit, and winded plastic film. The main technological difference between regular poly bag machine and pouch bag machine lies at the welding. The pouch bag machines have two separate sealing (welding) steps each steps followed by a cooling step. Cooling steps right after the welding steps are required to produce a high barrier quality welding.  Regular plastic bag machine has only one welding step and usually does not have cooling step followed the welding producing lower level of barrier property.
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There are three main technological process steps of the bag making machine. First one is the gusseting, as far as the corresponding bag has bottom or side gusset(s). The next step is the sealing or welding that is done by pressing certain points of the two-layer film to a heating unit as the film runs through the machine welding together the two layers of the film at the required points. The last process step is cutting up the-two layer film into the right size.
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Pouch bag making machine are usually more expensive than regular poly bag machines as pouch bag machines have an extra layer of technological complexity that ensures the high level barrier property sealing.
  
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Very important part of the whole technology is the process that controls the speed of the film running through the machine. The main process steps are repeated at an even pace, so the speed of the film needs to be very accurately controlled in order have the process steps applied at the required points and length of the film.
 
  
 
==Examples==
 
==Examples==

Revision as of 01:56, 26 November 2009

Plastic Pouch Bag Making Machines are a sub-category of the Plastic Bag Making Machines nevertheless they are discussed in a separate article, as the underlying technology of the two bag making types are different. Also, the properties of the bags produced by the two machines are different. Pouch bag are usually three-side sealed whereas the bags produced bag making machines are either bottom or side sealed (one-, or two-side sealed.)

In general pouch bags have higher barrier properties than regular bags. For instance pouch bags are used for food and medical packaging whereas high level liquid, light, oxygen, or heat barrier properties are required. The given barrier property is required both relative to the quality of the film the bag is made of and the quality of welding or sealing.

The input material of the pouch bag making machines is two layers of printed, slit, and winded plastic film. The main technological difference between regular poly bag machine and pouch bag machine lies at the welding. The pouch bag machines have two separate sealing (welding) steps each steps followed by a cooling step. Cooling steps right after the welding steps are required to produce a high barrier quality welding. Regular plastic bag machine has only one welding step and usually does not have cooling step followed the welding producing lower level of barrier property.

Pouch bag making machine are usually more expensive than regular poly bag machines as pouch bag machines have an extra layer of technological complexity that ensures the high level barrier property sealing.


Examples


Market info

One of the North American pouch bag making machinery suppliers is Plastic Equipment Co.

See also Plastic Pouch Bag Making Machines by Plastic Equipment Co. in MyWikiBiz.



Businesses related to Poly Bag Making Machines will identify themselves by the following 5-digit NAICS codes:

  • 33322 - Plastic manufacturing equipment manufacturers
  • 32611 - Plastic converting industry

References

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