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I am just a VIETNAM PLATIC BAGS 31/03/2017 9:50:13 SA

We’ve seen a great deal of press around the use of polythene bags lately, especially following the introduction of the single use carrier bag tax in many developed countries in the world. In spite of the bad press however, polythene still remains a widely used form of carrier bag in all types of retail, so we thought we would provide a simple guide to how this type of carrier is made!

Most polythene bags are made using the blown film extrusion process.  Small plastic pellets (resin) are melted down in a hopper, then extruded through an annular slit die to form a vertical tube. Cool air is ‘blown’ up into the tube until the polythene reaches the size and thickness needed. The overall effect is a little like producing a long thin balloon.
Once cooled, the long tube is flattened via rollers and wound onto a roll.   The polythene bag is created when the flattened rolls of film are heat-sealed across the width of the film and cut. The thickness of the bag is measured as a gauge or in microns and vary between 40 Gauge (10 microns) to  around 1000 Gauge (250 microns).
The colour of the film is determined by the coloured resins (master batch) used, although polythene carriers can be printed using matt or gloss inks.  The process of printing polythene can be tricky, and results vary, so it is best to ask Vietnam packaging production and import export JSC for advice on what designs would work best for your choice of polythene.
 Vietnam packaging can make plastic carrier bags with LDPE, HDPE, MDPE with or without EPI/D2W and especially compost bags with EN 13432. Please feel free to contact us for more detail.

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