Multi-layer color-printed laminated square-bottom valve-mouth coating bags
Description:
Applicable materials: paint powders (for interior and exterior walls), dry-mix mortar, gypsum powder, cement, quartz sand, and other dry construction materials.
Core Advantage: Superior Dust Resistance: Valve-mouth filling reduces dust spillage by more than 90%.
High filling efficiency: compatible with high-speed valve-fill machines
High drop resistance: withstands a 50 kg load and a 1.2-meter free fall without breaking.
Moisture- and leak-proof: laminated with a heat-sealed inner pouch, ensuring no caking during rainy-season construction.
Material and Craftsmanship:
Base material: PP (polypropylene) / HDPE (high-density polyethylene) woven fabric
Structure: PP woven fabric + PE barrier film (lamination or co-extruded liner)
Bag Type: Square Bottom Valve Bags
Valve port type: sleeve valve / flap valve
Printing: 2–7-color gravure color printing with laminating; the design is resistant to abrasion and to alkaline corrosion from cement.
Sealing method: hot-melt adhesive bottom sealing (automatic heat sealing at the valve opening), ultrasonic valve-seal closure (no pinholes), outer-seam bottom plus inner heat sealing (ultra-high strength).
Applicable filling methods: impeller-type / screw-type / pneumatic
Compatibility: High-Speed Rotary Filling System
Tensile strength: ≥700 N/50 mm, suitable for high-stacking and long-distance transportation.
Moisture-proof performance: Water vapor transmission rate reduced by more than 90% (with lamination and inner bag), ensuring that putty powder remains free of caking for up to 6 months.
Corrosion resistance rating: ★★★★★ (highly resistant to the alkaline components of cement and the acidic components of gypsum)
Packaging drop test: 50 kg load, 1.2-meter free fall—no breakage and no powder leakage after dropping on all six sides.
Printing standards: solvent-resistant ink with alkali resistance, compliant with building-material packaging labeling standards, and achieving a 100% barcode/QR code scan success rate.
Customization scope: multi-color overprinting (brand logo, product name, installation instructions), warning labels (“Moisture-Resistant,” “Keep Away from Acids and Alkalis”), barcodes/QR codes (for traceability and anti-counterfeiting), and measurement markings (20 kg/25 kg/40 kg scale lines).
Environmental Compliance: Made from virgin materials, odorless and dust-free, and compliant with hazardous packaging export certification.
Key features:
Easy to open: valve mouth is pre-formed, eliminating the need for manual bag support.
Easy filling: the valve port and filling nozzle fit tightly, with no powder leakage.
High-speed filling: suitable for production lines with a capacity of 10–30 bags per minute.
Leak-proof: self-sealing valve design ensures no dust generation during transportation.
Moisture-proof: laminated layer + inner pouch to block water vapor.
Stacking Stability: Square Bottom Design Ensures Stable Pallet Stacking
Packaging specifications: customizable (weight range, valve opening size, bag body dimensions, number of inner layers: 1 layer / 2 layers / aluminum foil layer).
Price and minimum order quantity: negotiable; please inquire.
Applicable to:
Putty powder manufacturer
Dry-mix mortar plant
Building materials export trader
Paint/Gypsum Companies
Keywords:
Multi-layer color-printed laminated square-bottom valve-mouth coating bags
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CERTIFICATE
20 years of production experience in the packaging woven bag industry
Advantages
We possess large-scale production capabilities, enabling us to handle substantial orders and ensure timely delivery.
Premium Quality
Adhering to strict global benchmarks for unparalleled durability and reliability
Competitive Pricing
World-class products at cost-effective rates for businesses of all sizes
Expert Team
Skilled professionals delivering top-quality results
Custom Solutions
Bespoke products designed to meet your specific needs
Process of Production
Pursuing development through technological innovation, Prioritizing quality in service
1
Making yarn PP
2
Weaving
3
Laminate
4
Printing/Membrane
5
Cutting/Sewing
6
Blown PE
7
Insert PE, Packing
8
Product
Applications
Delivering high-quality packaging that exceeds customer expectations
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