25kg Polymer Plastering Mortar Woven Bag | Heavy Duty PP Sack | Moisture-Proof & Leak-Proof | For Dry Mix Mortar

Product Overview: 
This product is a 25 kg woven bag specially designed for polymer-bonded mortar, manufactured from high-strength PP (polypropylene) woven fabric with a moisture-proof PE liner. It is tailored for packaging dry-mix mortar products and is available in either flat-bottom or valve-bottom styles, with heat-sealed bottoms. The bag offers outstanding performance characteristics, including high load-bearing capacity, moisture and leak resistance, and excellent puncture resistance. Custom printing is available, making it suitable for packaging a wide range of dry-mix construction materials, such as polymer-bonded mortar, tile adhesives, and skim coats.

Applicable materials: 
Polymer-bonded mortar, thermal-insulation-board bonding mortar, tile adhesive, skim coat mortar, repair mortar, grouting material, putty powder, gypsum powder, self-leveling mortar, and other dry-mix construction materials.

Core Advantages: 
25 kg standard specification, high-load-bearing PP bag, moisture-proof and leak-proof, puncture- and tear-resistant, with excellent heat-seal bottom sealing, suitable for filling dry-mix mortar, and supports custom printing.

Material and Craftsmanship: 
Outer layer: PP (polypropylene) woven fabric

Inner layer: PE barrier film (lining film, moisture- and leak-proof)

Structure: PP woven fabric + PE inner liner (double-layer composite)

Bag styles: flat pouch / M-side gusset pouch / square-bottom valve pouch (optional)

Bottom sealing methods: heat-sealed bottom (recommended) / sewn bottom (with sealing strip) / ultrasonic-sealed bottom

Printing: 2 to 7-color rotogravure printing, with crisp, wear-resistant graphics.

Characteristics of high-load-bearing PP bags: 
High Load-Bearing Capacity: Tensile strength ≥ 700 N/50 mm (30% above the national standard), capable of supporting 25 kg.

Puncture Resistance: The tightly woven structure makes it difficult for mortar particles to penetrate the bag.

Tear Resistance: Thickened weaving makes it less likely to tear along cuts.

Stackability: Can be stacked 8–10 layers without deformation.

Eco-friendly and recyclable: manufactured from virgin PP material

Moisture resistance: 
PE Liner Film: Features a built-in PE barrier film that reduces water vapor transmission by more than 95%.

Heat-sealed bottom: The bottom is heat-sealed, with no pinholes and excellent sealing performance.

Effect: Effectively prevents dry-mix mortar from absorbing moisture, caking, and hardening to the point of failure, with a shelf life of 12 months or longer.

Leak-proof performance: 
Heat-seal bottom process: the bottom is completely sealed, with no risk of leakage.

Integrated PE liner: the inner bag is laminated or co-extruded with the outer bag, eliminating delamination and leakage.

Drop Test: 25 kg load dropped from a height of 1.2 meters; no breakage or leakage after six-sided drops.

Tensile strength: 
≥700 N/50 mm (30% above the national standard), suitable for stacking and transporting under a 25 kg load.

Packaging drop test: 
25 kg payload, 1.2 m free fall, six-sided drop test—no breakage, no material leakage

Corrosion resistance grade: 
★★★★ (Highly resistant to cement alkaline components and polymer additives)

Custom Printing: 
Printing method: intaglio color printing with lamination, resulting in vibrant colors and excellent abrasion resistance.

Printable content: Brand logo, product name (polymer-bonded mortar), net content (25 kg), product characteristics, instructions for use, application methods, applicable standard number, reserved space for production date and batch number, shelf life, storage conditions, barcode, QR code, and warning labels (“Moisture-proof” and “Drop-resistant”).

Special Techniques: Local UV Coating, Gold Foil Stamping, Anti-Counterfeiting Printing

Sealing method (after filling): 
Recommendation: Heat-sealing (heat-sealed to a PE liner for excellent sealing performance)

Optional: thread-sealing closure (with sealing strip) or ultrasonic sealing

Applicable filling method: 
Spiral filling machine, impeller filling machine, airflow filling machine, gravity filling machine, manual filling

Packaging specifications: 
Loading weight: 25 kg (standard)

Bag dimensions: 600 × 450 mm (customizable)

Bag Type: Flat Bag / M-Edge Bag / Valve Bag (optional)

Bottom style: heat-sealed bottom (recommended)

Environmental Compliance: 
Made from virgin PP and PE materials; recyclable. Supports export certification.

Applicable to: 
Polymer-bonded mortar manufacturers, dry-mix mortar companies, thermal insulation material producers, tile adhesive manufacturers, building-material packaging purchasers, and dry-mix mortar export traders.

Price and Minimum Order Quantity: 
Negotiable; inquiries welcome.