the impact of bag materials on cement strength, moisture resistance performance Rc, layout printing content and other project indicators. Among them, 4 batches of products were unqualified, and the qualified rate of product sampling inspection was 85.7%.
The main indicators of disqualification are the tensile load in the plastic woven bag - warp direction, weft direction, tolerance deviation density and weft density. The qualified rate of corrugated boxes for transport and packaging was 96.0%.
This survey sampled 25 batches of 14 corrugated box manufacturers for transport packaging, based on GB/T 6543-2008 “National Standard for Corrugated Paper Boxes and Double Corrugated Carton for Transportation Packaging”. . Mainly for material, size and deviation, box appearance, lap tongue width, nail line spacing,
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