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{"title":"High Tear Resistance Kraft Paper Valve Bags with Moisture-Proof Lining and","imgUrl":"https:\/\/img.chinax.com\/nimg\/9e\/df\/6eb49fcfa0e81de7a6e70133d6fa-200x200-1\/high_tear_resistance_kraft_paper_valve_bags_with_moisture_proof_lining_and.jpg","attrs":{"Model Number":"250000113","Certification":"GB\/T19001-2016\/IS09001:2015","Tearresistance":"Strong Tear Resistance","Payment Terms":"L\/C,T\/T"}}
{"title":"10kg 25kg Pasted Valve Multiwall Paper Bags In 70 To 120 Gsm Thickness","imgUrl":"https:\/\/img.chinax.com\/nimg\/83\/df\/b27900729131173f9dc1dbe77ee9-200x200-1\/10kg_25kg_pasted_valve_multiwall_paper_bags_in_70_to_120_gsm_thickness.jpg","attrs":{"Coloroptions":"Natural Brown, White, Or Customized Colors","Usage":"Packaging Of Cement, Flour, Chemicals, And Powders","Closuretype":"Valve Closure For Automatic Filling","Printing":"Custom Logo And Design Printing Available"}}
{"title":"Self-sealing Valve Kraft Paper Valve Bags with High Tear Resistance and","imgUrl":"https:\/\/img.chinax.com\/nimg\/c6\/96\/c14b806c57f1001e490d9c7c7d5b-200x200-1\/self_sealing_valve_kraft_paper_valve_bags_with_high_tear_resistance_and_recyclable_biodegradable_design_for_heavy_duty_packaging.jpg","attrs":{"Payment Terms":"L\/C,T\/T","Valve Type":"Self-sealing Valve","Tear Resistance":"High Tear Resistance","Capacity":"10kg To 25kg"}}
{"title":"Self-sealing Valve Multiwall Paper Bags with High Moisture Resistance and","imgUrl":"https:\/\/img.chinax.com\/nimg\/19\/ee\/f092321bfa5336c83c591427f55c-200x200-1\/self_sealing_valve_multiwall_paper_bags_with_high_moisture_resistance_and_customizable_printing_for_bulk_powder_packaging.jpg","attrs":{"Place Of Origin":"Henan China","Capacity":"10kg To 25kg","Payment Terms":"L\/C,T\/T","Bagsize":"Customizable (commonly 25kg, 50kg)"}}
{"title":"Multiwall Kraft Valve Paper Bags for Packaging Chemical Materials","imgUrl":"https:\/\/img.chinax.com\/nimg\/44\/ff\/e9b8587bb806af3751fae2f51011-200x200-1\/multiwall_kraft_valve_paper_bags_for_packaging_chemical_materials.jpg","attrs":{"Brand Name":"HUAYUAN","Model Number":"250003","Certification":"GB\/T19001-2016\/IS09001:2015","Place of Origin":"Henan Xinxiang China"}}
{"title":"Recyclable Paper Valve Bags Durable Packaging Bags for Powders and Environmental","imgUrl":"https:\/\/img.chinax.com\/nimg\/7b\/c8\/1ae6cb24f59f56a747f3a6e033d3-200x200-1\/recyclable_paper_valve_bags_durable_packaging_bags_for_powders_and_environmentally_responsible_material.jpg","attrs":{"Usage":"Suitable For Cement, Flour, Chemicals, And Powders","Sealing Method":"Heat Sealing Or Stitching","Recyclability":"100% Recyclable","Strength":"High Tensile Strength"}}
{"title":"Valve Multiwall Paper Sack Heat Sealing Or Stitching Ideal For Bulk Powder","imgUrl":"https:\/\/img.chinax.com\/nimg\/33\/25\/f3fc5e960788989bb301dd18e311-200x200-1\/valve_multiwall_paper_sack_heat_sealing_or_stitching_ideal_for_bulk_powder_packaging.jpg","attrs":{"Valve Type":"Self-sealing Valve","Sealing Method":"Heat Sealing Or Stitching","Color":"Natural Brown Or White","Material":"Kraft Paper"}}
Using natural brown or white kraft paper with valve closure designed for automatic filling
Product Overview
The kraft paper valve bag is a specialized packaging solution designed specifically for ultra-fine powders, chemical powders, and building material granules. This fully automatic filling packaging system ensures efficient and precise packaging, catering to the demanding needs of these industries.
Manufactured using a multilayer high-strength virgin kraft paper composite inner film process, the bag provides excellent durability and protection. The valve bag features a square bottom valve structure, which effectively replaces traditional open-mouth bags, offering enhanced convenience and improved sealing performance.
Currently, this type of packaging has become the mainstream standardized choice across several industries, including carbon black, white carbon black, titanium dioxide, pigments, additives, and building material powders.
Key Features
Valve Mouth Self-Sealing and Zero Dust Leakage: Inner and outer valves are precisely compatible with fully automatic filling equipment. After filling, air pressure automatically seals the valve, eliminating manual sealing and preventing powder dust, leakage, and contamination.
Stable Stackable Three-Dimensional Square Bottom: Integrally formed square bottom maintains firm, upright shape. Even load distribution prevents tilting or collapsing, ideal for high-level warehouse storage and container sea transportation.
Multi-layer Thickened Material with Strong Impact Resistance: Made from 2 to 4 layers of full wood pulp stretch kraft paper with high tensile strength and toughness. Resists tearing and punctures during long-distance transport and handling.
Moisture-Proof Lining to Prevent Caking and Deterioration: Food-grade PE moisture-proof inner membrane isolates air, water vapor, and humidity. Prevents ultrafine powders from absorbing moisture, caking, discoloring, or losing performance.
Compatible with High-Speed Automated Production: Uniform shape and hardness with precisely fitting valve mouth compatible with various domestic and international powder automatic filling machines.
Clear Printing and High Brand Recognition: Supports high-definition flexographic and full-page printing for company logos, product models, net weight, standards, and export labels.
Technical Parameters
Parameter
Specifications
Paper Layers
2-layer, 3-layer, and 4-layer options using native kraft paper (80-100 g/m²)
Inner Lining
Standard PE moisture-resistant, anti-static PE, or high barrier aluminum foil inner film
Bag Bottom
Square glued bottom formed integrally with double-layer heat seal reinforcement
Valve Options
Internal valve (mainstream), external valve, and extended valve for high-capacity production
Dimension Tolerances
±5mm for length, width, and height
Print Quality
Precise color registration without ghosting, missing prints, or dirty spots
Sealing Standards
Tight and secure valve closure with no light transmission, powder leakage, or gaps
Industry Applications
Chemical Powder Industry: Carbon black (high-pigment, conductive, acetylene, rubber carbon black), fumed silica, titanium dioxide, zinc oxide, nano powders, chemical fillers, and additive powders
Pigment and Coating Industry: Iron oxide pigments, organic pigments, pearl powder, wax powder, matting powder, and color masterbatch powders with moisture protection and color lock features
Building Material Dry Powder Industry: Tile adhesive, putty powder, dry mortar, gypsum powder, heavy calcium carbonate, talcum powder, and insulation powders with stable stacking and high load-bearing capacity
Rubber and Plastics Industry: Rubber reinforcing powders, plastic fillers, and modified powders with anti-static and dust-proof features for automated feeding systems
Customization Options
Specification Customization: Standard sizes of 10kg, 20kg, and 25kg. Custom sizes from 5kg to 50kg and special bag types available
Material and Process Customization:
Standard Version: Multi-layer kraft paper with PE moisture-proof inner lining
Anti-Static Version: Multi-layer kraft paper with anti-static inner lining for carbon black and nano powders
Printing Customization: 1 to 4-color high-definition flexography for corporate logos, company names, product models, net weight, batch numbers, standards compliance, shipping marks, English versions, QR codes, and contact information
Detail Customization: Extended valve openings, reinforced bag bottoms, full lamination for waterproofing, anti-slip surfaces, special breathable designs, customized hardness, and gram weight adjustments
Company Details
Bronze Gleitlager
,
Bronze Sleeve Bushings
and
Graphite Plugged Bushings
from Quality China Factory
Business Type:
Manufacturer
Year Established:
2007-09-18
Total Annual:
20000000-20000000
Employee Number:
50~100
Ecer Certification：
Verified Supplier
Xinxing Huayuan Paper-Plastic Bag Co., Ltd. Company Profile
Company Overview :
Established on September 18, 2007, Xinxing Huayuan Paper-Plastic Bag Co., Ltd. specializes in the paper packaging industry, providing high-quality paper-plastic packaging solutions for customers. Located in the Xinduo Ec... Xinxing Huayuan Paper-Plastic Bag Co., Ltd. Company Profile
Company Overview :
Established on September 18, 2007, Xinxing Huayuan Paper-Plastic Bag Co., Ltd. specializes in the paper packaging industry, providing high-quality paper-plastic packaging solutions for customers. Located in the Xinduo Ec...
