Stay ahead with technical deep-dives written by our prepress engineers and polymer chemists in Haizhu, Guangzhou. From barrier shelf-life calculations to circular mono-material compliance.
OTR and WVTR describe oxygen and water vapor transmission under specified test conditions, not a guaranteed product shelf life. Learn which report details must match, how windows and seals affect whole-pack performance, and what validation should follow a film comparison.
Learn when roasted coffee packaging may need a one-way degassing valve, how whole bean and ground coffee differ, and which pouch, valve and validation questions to resolve before ordering.
A procurement checklist for translating VFFS or HFFS machine requirements into a usable rollstock RFQ, covering web layout, unwind orientation, reel dimensions, friction, sealing, and production approval.
Compare fill-through-spout and open-top filling before ordering custom liquid pouches. This guide explains how viscosity, particulates, headspace, fitment compatibility, seal contamination, and thermal conditions affect the specification.