What types of products can be packed in valve bags?

Valve bags are suitable for Powders (cement, flour, chemicals, etc.), Granules (fertilizers, seeds, etc.), and Pellets (plastic, animal feed, etc.).

How is a valve bag sealed?

The valve is usually sealed by heat, adhesive, or sometimes crimped or stitched.

What sizes do valve bags come in?

Common sizes range from 5 kg to 50 kg (11 lbs to 110 lbs), with custom sizes available.

Durable Open Cement Bags Designed for Heavy-Duty Industrial Use

Name: Durable Open Cement Bags Designed for Heavy-Duty Industrial Use
Brand: Wenzhou Xihang Plastic Industry Co.,Ltd
SKU: 2274019875

Zhejiang, ChinaWenzhou Xihang Plastic Industry Co.,Ltd

US$0.01-0.35

5,000 Pieces

Sample price:US$0.10/piece.Request sample

Product profile

Application

Chemical, Food

Loading Capacity

50kg

Material

Kraft Paper

Model NO.

xh8801

Top

with Valve or Full Open

Bottom

Square Bottom

Print Type

Flexo or Gravure

Capacity

360000PCS Per Day

Feature

Recyclable, Moisture Proof

Shape

Square Bottom Bag

Making Process

Composite Packaging Bag

Bag Variety

Your Bag

Transport Package

Bale or Pallet

Specification

70cm*30cm*50cm

Trademark

customized

Origin

Wenzhou

HS Code

630533

Production Capacity

10.8millon/ Month

Key features

High Daily Capacity: Production capacity reaches 300,000 to 360,000 pieces per day.

Customizable Dimensions: Width ranges from 30-100cm with length tailored to customer requirements.

Versatile Material Options: Available in 100% virgin PP, PE, or Kraft Paper with GSM 55-200.

Flexible Printing Design: Supports custom logos, self-design, or company design with up to 8 colors.

Durable Construction: Features high tensile strength, dimensional stability, and resistance to falls.

Moisture Proof & Recyclable: Designed with recyclable materials and moisture-proof features.

Food Contact Compliance: Materials meet food contact safety standards for various applications.

Customizable Top & Bottom: Options include valve ports, full open tops, and square bottom designs.

Company profile

Wenzhou Xihang Plastic Industry Co.,LtdZhejiang, China

CertifiedBusiness Type: Manufacturer/Factory & Trading Company CertifiedCustomization Options: Customization from Samples, Customization from Designs, etc. CertifiedExport Year: 1 Year CertifiedNearest Port: Ningbo Port, Shanghai PortAverage Response Time: ≤3.80h CertifiedTerms of Payment: LC, T/T, D/P, etc.

AI-Powered supplier vetting

SummaryThe supplier operates in plastic, rubber, industrial textile, hardware, paper packaging, and printed packaging products, with licensed activities covering packaging printing and food-use packaging production. Its manufacturing plant covers 11,000.37 m² and includes printing, laminating, and bag-making equipment. The supplier supports broad customization and lists 20 qualified service-capable suppliers, with stated one-month lead times in both peak and off-seasons. However, service-management procedures, complaint-handling records, corrective-action procedures, and quality assurance are not documented; finished products are checked by packing staff, and only one quality assurance/control inspector is reported. The supplier has ISO9001:2015, ISO45001:2018, and ISO14001 certifications, but lacks overseas warehouses, showrooms, agents or branches, and reported participation in offline trade shows. Financial credibility, innovation capability, and customer-case evidence remain insufficiently established from...

Supplier typeThe supplier is a manufacturer and seller of plastic, rubber, industrial textile, paper, and printed packaging products. Its licensed scope specifically includes packaging printing, plastic packaging containers and food-use products, and food paper packaging, indicating a packaging-focused manufacturing supplier.

CertificationsThe supplier reports ISO9001:2015, ISO45001:2018, and ISO14001 certifications, covering quality, occupational health and safety, and environmental management. These certifications provide explicit evidence of formal management-system certification, although no conclusion is made about current validity beyond the stated information.

After-Sales capabilityThe supplier reports no written procedures or records for service-capability assessment, corrective and preventive actions, or effective customer-complaint handling, and states that quality assurance is absent. It also has no overseas warehouse, showroom, agent or branch; therefore, the available evidence indicates a documented after-sales and overseas-service deficiency.

Production capacityThe supplier reports an 11,000.37 m² manufacturing plant and identifies printing, laminating, and bag-making machines, with products including packaging bags, shopping bags, woven bags, zipper bags, valve bags, non-woven bags, coffee bags, and spout pouches. This directly supports established packaging production capability, although quality inspection resources are limited to one reported inspector and packing-staff checks.

Customization capabilityThe supplier explicitly supports customization from samples, customization from designs, full customization, minor customization, and flexible customization. This is direct evidence of a broad range of customization services.

Product Q&A

Q:What is a valve bag?

A valve bag is a type of packaging designed for bulk materials. It has an integrated valve for efficient filling, which is sealed after filling to keep contents secure.

Q:What materials are valve bags made from?

Valve bags can be made from Paper (often kraft paper with a polyethylene liner), Plastic (such as polypropylene or polyethylene), or Multi-wall (combining paper and plastic for added strength and moisture resistance).

Q:What are the benefits of using valve bags?

Benefits include efficiency through fast, automated filling; reduced spillage minimizing dust; product protection against contaminants and moisture; and customization options for branding and product details.

Q:How are valve bags filled?

A filling machine inserts a nozzle into the valve to fill the bag with material. The valve is then sealed after filling.

Q:Are valve bags recyclable?

Yes, many are recyclable, especially those made from paper or plastic, depending on local recycling programs.