Full Color Printed Square Bottom Valve Bag for Gypsum | High-Definition Brand Graphics | Auto-Fill Ready | Dust & Leak Proof Design

Product Overview: 
This product is a full-color printed, square-bottom valve-seal gypsum bag, specifically designed to complement automated filling lines for powdered materials such as gypsum powder. The square-bottom valve design is compatible with high-speed valve-seal fillers, enabling fully automated filling and sealing. High-resolution, full-color printing delivers crisp, high-definition brand graphics, enhancing the product’s shelf presence. The dust-proof and leak-proof design effectively minimizes dust spillage during filling and leakage during transportation, making it ideal for gypsum powder brands and export-oriented companies with stringent packaging quality requirements.

Applicable materials: 
Building gypsum powder, high-strength gypsum powder, modeling gypsum powder, joint-filling gypsum, plastering gypsum, putty powder, cement, dry-mix mortar, and various powdered construction materials.

Core Advantages: 
Full-color, high-precision printing ensures clear brand presentation; the square-bottom valve opening is compatible with automated filling, providing dust-proof and leak-proof performance to improve the working environment; dedicated automation for filling doubles efficiency, and the valve self-seals, eliminating the need for manual sealing.

Full-color, high-definition brand graphics: 
Utilizing high-precision gravure color printing with lamination, the resolution reaches over 150 lines per inch, enabling full-color CMYK printing with vibrant hues, smooth gradations, and rich tonal layers.

Customization Scope: 
Dimensions can be customized to 25 kg or 40 kg specifications, including length, width, and bottom width. Valve port specifications can be tailored to match the discharge nozzle of the filling machine. Full-color printed graphics and text can be fully customized according to the customer’s brand identity guidelines. Optional features include a PE laminating layer, a PE inner liner, or an aluminum foil inner liner.

Specifically for automated filling of square-bottom valve openings: 
This product is specifically designed for valve-mouth filling machines and features a square-bottom valve bag configuration, eliminating the need for manual sewing or heat sealing.

Dustproof and leak-proof design: 
During valve-mouth filling, the material flows within the sealed valve mouth and the discharge nozzle channel of the filling machine, minimizing dust spillage. Compared with manual filling of flat bags, dust concentrations in the filling workshop are reduced by more than 80%. Testing has shown that, under a 40 kg load and subjected to a 1.2-meter free-fall drop test from all six sides, the container remains intact and exhibits no leakage.

Moisture resistance: 
This product can be optionally equipped with a PE laminated layer or a PE inner liner. The laminated version reduces water vapor transmission by more than 90%, effectively preventing gypsum powder from absorbing moisture, caking, and losing its effectiveness due to hardening. For export applications or long-term storage, we recommend the aluminum foil inner liner option, which reduces water vapor transmission by more than 98%.

Material and Craftsmanship: 
The outer layer is made of PP polypropylene woven fabric, with full-color, high-precision gravure printing and laminating on the surface. The bag style is a square-bottom valve pouch, with a three-dimensional, square-shaped bottom. The valve opening is either cuff-style or flap-style, integrally molded. Printing is full-color laminated printing, with a resolution of 150 lines per inch or higher.

Tensile strength: 
Testing has confirmed that the tensile strength exceeds 700 newtons per 50 millimeters, enabling it to support 25 kg and 40 kg of gypsum powder.

Packaging drop test: 
Under a 40 kg load condition, the product passed a 1.2-meter free-fall test with no breakage and no leakage on any of its six sides.

Applicable filling method: 
Compatible with various high-speed valve-fill equipment, including impeller-type valve fillers, screw-type valve fillers, and pneumatic valve fillers.

Packaging specifications: 
The standard loading weight is 25 kg or 40 kg.

Environmental Compliance: 
The product is manufactured using virgin PP material and is recyclable. It also supports hazardous packaging export certification.

Applicable to: 
This product is suitable for manufacturers of architectural gypsum powder brands, high-strength gypsum powder producers, model-making gypsum powder manufacturers, joint-filling and plastering gypsum producers, dry-mix mortar companies, and building-materials export traders.

Price and MOQ: 
Specific pricing and MOQ are negotiable.