How to find the right Poly & Plastic Packaging Bags AI guide
Written by an AI model from its trained knowledge.
What the AI looks for in Poly & Plastic Packaging Bags
- Thickness (mil)
- Use 1 to 2 mil for light packaging and parts bags, 2 to 2.5 mil for poly mailers, and 4 mil or more for heavy-duty bags. Thickness drives puncture resistance and how much a bag can safely hold.
- Resin
- LDPE is soft, clear and flexible. HDPE is thinner, crinkly and stiffer for the same strength. The resin affects clarity, feel and tear behavior.
- Closure type
- Choose from open-top (heat seal or tape), reclosable zip, or self-seal adhesive mailers. Closure determines tamper evidence, reusability and packing speed.
- Suffocation warning
- Bags with an opening of 5 inches or more that are sold or shipped to consumers commonly need a printed suffocation warning. This is a frequent requirement for retail and fulfillment packaging.
- Size convention
- Sizes are listed as width x length, with width along the opening. Misreading the orientation is the most common sizing mistake.
Brands that matter
- Ziploc: Consumer reclosable bags.
- Berry Global: Large poly film and bag producer.
What to avoid
- Bags with no stated mil thickness.
- Thin mailers for sharp-edged items.
- Unprinted bags for retail or fulfillment where a suffocation warning is required.