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Are Adhesive Document Pouches Waterproof?

By gobike1979
September 29, 2026

If you ship internationally, a soaked invoice or a smudged packing slip can mean delayed customs clearance, confused customers, and costly reshipments. Adhesive document pouches (also called “documents enclosed” wallets or packing list envelopes) are the standard solutions. But how well do they actually protect against water? Here’s the short answer: Yes, they are waterproof under […]

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How Much Weight Can a Poly Mailer Hold?

By gobike1979
September 29, 2026

If you ship products internationally, you’ve probably asked yourself: How much can this poly mailer actually hold before it fails? It’s a practical question with real consequences. A blown-out bag means lost product, unhappy customers, and costly reshipments. Here’s what you need to know about poly mailer weight capacity, strength, and how to choose the right […]

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How to Easily Determine the Quality of Glue

By gobike1979
September 29, 2026

To evaluate the performance of an adhesive used for self-adhesive labels, one must look at three core metrics: initial tack, holding power, and peel strength. Understanding these three indicators allows you to accurately avoid inferior products and select high-quality self-adhesive labels that are well-suited to your specific application. 1. What is initial tack? Initial tack […]

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