Poly Tubing
Material and Construction
Poly tubing is manufactured from 100% virgin low-density polyethylene (LDPE) resin using blown film extrusion. The result is a continuous, tube of film that lies flat on the roll. Unlike pre-made bags, tubing has no side seals or bottom seal, giving the operator full control over bag length. The tubing is cut to the desired length and both ends are heat sealed to create a custom bag, or one end is sealed and the product is inserted from the open end before sealing the top.
Mil Thickness Selection
- 2 mil is a light-duty tubing for packaging lightweight items, dust protection, and temporary storage. Widths available from 3 to 32 inches with roll lengths up to 2,000 feet.
- 3 mil provides medium-duty protection for parts and products with moderate weight or slight edges.
- 4 mil is the standard-duty option for most industrial packaging applications. Available in clear and black LDPE, with widths from 3 to 48 inches.
- 6 mil is heavy-duty tubing for metal parts, sharp-edged components, and large or heavy items. Available in widths from 3 to 60 inches with roll lengths varying by width (300 to 1,000 feet).
Custom Bag Creation
Poly tubing converts to bags using any standard impulse or constant-heat sealer. The operator pulls tubing off the roll, inserts the product, and seals both ends (or one end if using the fold at the bottom of the tube). This process allows a single roll of tubing to replace dozens of pre-made bag sizes, reducing inventory complexity and waste from oversized bags. For high-volume operations, auto-baggers and bag-making machines can be fed directly from tubing rolls.
Width and Roll Specifications
Lay-flat width refers to the measurement across the flattened tube. When opened, the usable circumference is twice the lay-flat width. Standard lay-flat widths range from 3 inches (for small parts) to 60 inches (for large items, furniture components, and industrial equipment). Roll lengths decrease as width and mil thickness increase, ranging from approximately 300 feet for the widest heavy-duty rolls to 2,000 feet for narrow light-duty tubing.
FDA Compliance
All standard virgin LDPE poly tubing meets FDA and USDA specifications for food contact applications. The tubing also meets MIL SPEC A-A-3174 for lay-flat polyethylene tubing.
Specifications
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