Frequently Asked Questions
What causes ziplock bags to break or leak during shipping?
Common causes include overfilling, sharp product edges, weak bag thickness, poor sealing, and pressure changes during transit. Rough handling and stacking can also stress the seal and create leaks.
How can I prevent ziplock bags from leaking in transit?
Use the right bag thickness, avoid overpacking, remove trapped air, and press the seal closed completely. For liquids or messy items, add a second sealed bag and place it inside protective outer packaging.
What type of ziplock bag is best for shipping fragile or liquid items?
Choose heavy-duty, puncture-resistant ziplock bags made for commercial packaging. Thicker bags with strong seals work best for liquids, powders, and items with corners or edges.
Should ziplock bags be used alone for shipping?
No, they work best as an inner layer of protection. Place the sealed bag inside a box, mailer, or padded package with cushioning to reduce impact and prevent punctures.
How do I test ziplock bag packaging before shipping products?
Run a simple packing test by filling, sealing, and gently pressing the bag to check for leaks. You can also simulate shipping conditions with drop tests and compression tests to make sure the bag and outer packaging hold up.
