3-Ply Extensible Kraft Paper + 1-Ply Sandwiched PE Moisture Film (3-Paper-1-Film Block-Bottom Valve Bag)
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Parameter |
Details |
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Target SEO Keywords |
AD STAR Style Paper Valve Bags, Multi-wall Kraft Paper Valve Bag, 3 Ply Paper Bag with PE Liner |
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Material Structure |
3 Layers of High-Porosity Extensible Kraft Paper (70gsm - 90gsm) + 1 Layer sandwiched PE Film (15um - 25um) |
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Shape Configuration |
Block bottom at both ends, with an integrated self-closing filling valve sleeve |
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Porosity & Venting |
Naturally breathable high-porosity kraft paper that vents air without requiring perforated holes |
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Recommended Capacities |
15kg, 20kg, 25kg (Standard construction-grade sizes) |
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Moisture Barrier Level |
High-efficiency vapor barrier (prevents powder clumping and extends sensitive product shelf life up to 12 months) |
Protects highly hydroscopic cement-based grouts and tile adhesive polymers from moisture damage, extending the guaranteed shelf life up to 12 months.
Ensures pure plaster, jointing compounds, and specialized dry mortars do not absorb humidity, preserving exact hardening and setting properties.
Perfect for packaging high-value, moisture-sensitive technical powders such as titanium dioxide, carbon black, bentonite, and organic pigments. The multi-ply paper construction offers high tear resistance during handling, while the leak-proof valve ensures a clean and dust-free packaging process.
We stand behind the quality of our industrial packaging with strict testing standards. Our multi-wall kraft paper bags undergo rigorous drop tests and moisture-resistance evaluations to protect your materials in all weather conditions.
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