A B2B specification guide for heavy-duty pet food bags, flat bottom bags, zipper strength and puncture resistance.
Pet food bags commonly use PET/VMPET/PE with 120–180 µm total thickness depending on kibble size, fat content and filling weight.
For 2 kg+ bags, heavy-duty 8–12 mm zipper or slider zipper is recommended for repeat opening and closing.
A filled bag drop test at 1.0 m on six faces helps validate seal strength and bottom gusset durability before mass production.
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