Custom Printed Square Bottom Valve Bags for Automatic Lines

Name: Custom Printed Square Bottom Valve Bags for Automatic Lines
Brand: Chengda Pack Industry (Qingdao) Co., Ltd.
SKU: 2184173202

Shandong, ChinaChengda Pack Industry (Qingdao) Co., Ltd.

US$0.24

10,000-29,999 piece

US$0.113

30,000+ piece

Sample price:US$0.01/piece.Request sample

Product profile

Customization

Available

Application

Cement, Chemical, Fertilizer, Fodder, Food, Fruit Bag, Sand Bag, Transport, Vegetable Bag

Feature

Waterproof, Recyclable, Moistureproof

Model NO.

CD-VALVE3101

Loading Capacity

20kg 25kg 40kg 50kg

Material

Printing

Offset Printing and Flexible Printing (Economical

Surface Treatment

Coating

Thickness

0.05mm, 0.06mm, 0.07mm, 0.08mm, 0.09mm, 0.12mm, 0.14mm, 0.16mm, 0.18mm, 0.1mm, 0.2mm

GSM

80-120 G/M²

Shape

Square Bottom Bag

Raw Materials

Polypropylene Plastic Bag

HS

6305330090

PP, Laminated Material

Anti-Slip Treatment

Color

White, Beige, Black, Green etc

Denier

700-1500d

Bottom

Square Bottom

MOQ

10000PCS

Bag Variety

Your Bag

Transport Package

by Bale or Pallet as Per Request

Specification

80x50+10cm or Customized

Trademark

QDCD

Origin

Shandong, China

HS Code

6305330090

Key features

Valve bags are specially designed for high-speed automatic filling lines-material fills through the valve and self-seals upon completion, eliminating extra sealing steps.

Square bottom design ensures neat rectangular shape after filling, optimizing pallet stacking and container space utilization.

Hot air welded bottom and valve- adhesive-free and stitch-free, eliminating needle holes to prevent leakage and breakage.

Micro-perforation system allows rapid air release during high-speed filling while retaining fine powders- no bursting.

PE/BOPP lamination provides superior moisture barrier, ideal for long ocean freight and humid storage conditions.

PP woven fabric offers high tear and puncture resistance. Proven near-zero breakage rate from filling through transportation.

Made from 100% virgin PP resin-consistent strength, color stability, and reliable aging performance.

Available in Gravure/Flexo printing up to 8-10 colors per side-vibrant, durable prints for premium brand presentation.

100% polypropylene material, fully recyclable-meets stringent EU and global environmental packaging standards.

Company profile

Chengda Pack Industry (Qingdao) Co., Ltd.

Shandong, China

Business Type: Manufacturer/Factory, Trading Company CertifiedCustomization Options: Flexible customization CertifiedExport Year: 6 Years CertifiedNearest Port: Qingdao PortAverage Response Time: ≤2.56h CertifiedTerms of Payment: LC, T/T

AI-Powered supplier vetting

SummaryChengda Pack Industry (Qingdao) Co., Ltd. is a China-based trading company established in 2019 with seven employees and operations in Qingdao, Shandong. It offers multiple woven and flexible packaging products and reports more than 10 production lines, substantial stated product output, and export markets across South America, Southeast Asia, the Middle East, and North America. The company states that it has professional sales, service, design, and R&D teams, including a Malaysia-based sales and service team. An SGS audit record is provided with validity from March 19, 2025 to March 18, 2026, but the audit result is recorded as “0” without an explained interpretation. Evidence is insufficient to verify outsourcing controls, inventory, overseas warehousing, OEM/ODM services, raw-material traceability, or customer cases.

Supplier typeThe supplier is explicitly identified as a Trading Company and Limited Company registered in China, with its operating province in Shandong and city location in Qingdao. Its associated industry is wholesale and retail, supporting classification as a trading-oriented business rather than a clearly documented manufacturer.

After-Sales capabilityChengda Pack states that it has a professional sales and service team and a Malaysia-based team responsible for packaging bag sales and service in Southeast Asia. Specific after-sales processes, service-level commitments, inventory support, overseas warehouse capability, and showroom services are all marked unknown.

R&D capabilityThe company describes a design and R&D team established at the beginning of its operations and states that it develops packaging solutions for manufacturers and logistics companies. Nevertheless, product-development status, ODM availability, OEM capability, SDK-related R&D, and other structured innovation indicators are marked unknown.

Production capacityThe supplier reports operating more than 10 production lines and provides output figures for PP valve bags, BOPP laminated woven bags, PP woven bags, FIBC bulk bags, and PP woven fabric rolls, including 8,000 tons for fabric rolls. Its export markets include South America, Southeast Asia, the Middle East, and North America, while the records also identify Qingdao as the nearest port.

Product Q&A

Q:What's the difference between PP valve bags and open-mouth bags?

Valve bags are designed for automatic filling lines-they self-seal after filling, no sewing required. Square bottom ensures neat stacking and better warehouse space utilization.

Q:What filling pressure can they withstand?

Hot air welded bottom & valve-no needle holes, no glue. Withstands 0.3-0.6 MPa, no bursting under high-speed filling.

Q:How many colors can you print?

Gravure printing up to 8-10 colors per side with high resolution and saturated colors-deal for brand presentation.

Q:Are they eco-friendly and recyclable?

Yes. 100% virgin PP resin, glue-free, fully recyclable - meets EU and US environmental standards.