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  • A sack is a bag, especially a large one for carrying or storing goods.
  • High density polyethylene is one of the largest volume plastics in packaging today.
  • Some of the products made from HDPE are: gallon juice and milk jugs, cosmetic bottles, caps, pails, crates, bag liners, grocery bags, cereal wrappers, snack-food wrappers, diary cups, pallets, tubs, water tanks, and shipping containers.
  • Paper bags are suitable for PE coating when the contents or climates call for a moisture barrier.
  • Valved sacks have to be quickly filled with cement and other powdered material using compressed air. These filling methods place some extremely tough demands on the paper.
  • Polyethylene bags manufactured using 100 percent "Super Hexene" linear low density polyethylene resin will be permitted as a substitute for the specified mil thickness.
  • The thickness of bags manufactured using "Super Hexene" may be 1.0 mil less than that specified for the average and minimum thickness.
  • Most polybags are made out using petrochemical raw material called low density polymer.
  • LDPE (low density polyethylene) and its cousin LLDPE (linear low density polyethylene) are the workhorses of the poly bag industry.
  • Polyethylene Bags are made by heat sealing and cutting rolls of film. Rolls of tubing or sheeting are fed through a machine that draws material out to the proper length.
  • The machine then cycles to place a seal on the material and then cut it off to make an individual bag. In some cases, with small bags, machine cycle speeds may produce up to 70,000 bags per hour.
  • Poly bags, also known as polythene bags, have a variety of uses in many industries.
  • In the apparel, garment, sew goods, fabric and related industries, poly bags are use to protect goods during shipment from dirt, dust, and moisture.
  • Polythene bags have become the most widely used commodity in plastics when compared with other plastic items.
  • Plastic bags have captured more than 80 percent of the supermarket and convenience store packaging market at a cost of $4 billion to U.S. retailers annually.

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