The kraft paper valve bag is a high-strength packaging container specially designed for industrial powders and granular materials. It is made from multiple layers of durable and flexible kraft paper combined with a polyethylene (PE) inner lining that prevents leakage. Equipped with an automatic filling valve structure, this bag has become the mainstream standardized packaging product in industries such as chemical, construction materials, and new materials.

This product supports fully automatic spiral filling and vacuum filling production lines. During the filling process, air is automatically expelled and the bag body is shaped and filled to capacity without the need for manual sealing. This significantly improves packaging efficiency while reducing damage rates and labor costs.

The kraft paper valve bag is widely suitable for packaging 20-25 kg industrial materials such as carbon black, cellulose, latex powder, tile adhesive, putty powder, dry mortar, and chemical powders. Customization options are available for the number of layers, specifications, printing, as well as anti-leakage and anti-static features.

• New Materials and Chemical Industry: Packaging ultra-fine powders including carbon black, silica, powder additives, and chemical fillers with automated filling compatibility
• Building Materials Additives Industry: Moisture-proof packaging for HPMC cellulose, redispersible latex powders, putty powder, dry mortar, and gypsum powder
• Agricultural Materials Industry: Standardized packaging for fertilizer powders, feed additives, mineral powders, and resin powders
• Export and International Shipping: Customizable options including four-layer reinforced paper and double-layer PE anti-seepage designs for maritime transport

• Size Customization: Various sizes including 10kg, 20kg, 25kg, 40kg, and 50kg tailored to different equipment and material density requirements
• Layer Customization: Standard three-layer paper with one film for economical use, and four-layer paper with one film as universal choice
• Functional Customization: Anti-static and explosion-proof properties, food-grade odorless materials, reinforced tear resistance, and enhanced moisture resistance
• Printing Customization: Full color printing from 1 to 4 colors displaying company logos, brand names, and product information
• Die-Cut Customization: Non-standard designs including conventional side valve openings, special valve sizes, and reinforced bottoms

HUAYUAN Paper Valve Sacks, model number 250000, are manufactured in Henan, China, offering superior quality and durability. These sacks feature enhanced tear resistance and a self-opening valve type, ensuring ease of use and reliability for various packaging needs.