China PE Valve Bag Manufacturers Factory - Discount PE Valve Bag for Sale

Your Professional PE Bags Supplier！

Chuangda Plastic Packaging Factory, Jinan New District, Handan, Hebei, China, is located in Handan, The modern standard factory building is 10,000 square meters. The company's main products are FFS PE heavy-duty bags, EVA feeding bags, low-melting-point bags, PE valve bags, PE shrink molds, PE stretch films, PE flame-retardant films, rust-proof packaging, etc., plastic modification research and development, sales; processing and sales of plastic packaging materials (excluding medical use), research and development and promotion of degradable technology for plastic products; production of plastic products.

PE Square Bottom Valve Bags for Polyacrylamide
PE Square Bottom Valve Bags for Polyacrylamide are a type of bag designed specifically for packaging polyacrylamide. They have a square shape with a flat bottom and feature a valve structure. The main function of these bags is to properly
read more
Rubber Additives PE Square Bottom Valve Bag
Rubber additives PE square bottom valve bags are square-bottomed packaging bags made of polyethylene material and equipped with a valve. They are specifically designed for materials like rubber additives. The square-bottom structure allows
read more
Bleaching Powder PE Valve Bags with Square Bottom
They have strong sealing performance, which is good at preventing moisture and leakage. The PE (polyethylene) material itself has excellent waterproof and barrier properties. It can effectively prevent bleaching powder from coming into
read more
Carbon Black PE Valve Bags with Square Bottom
Carbon black PE valve bags with square bottom are square-bottomed packaging bags made of polyethylene material and equipped with a valve. They are specifically designed according to the characteristics of materials like carbon black.
read more
Moisture-proof PE Block Bottom Valve Bag
The anti-static performance is outstanding, ensuring safety. Anti-static masterbatches (such as carbon-based conductive materials and permanent antistatic agents) are added to the bag material. The surface resistance is controlled between
read more
Food Grade PE Square Valve Bag
Food-grade PE square valve bags are square valve-type packaging bags made of polyethylene materials that meet food contact standards. They have a unique square structure. This structure allows them to stand firmly on flat surfaces. It
read more
Heat-sealed PE Square Valve Bag
Advantages of Heat-Sealing Process: High-frequency heat sealing or heat-sealing machines are used to melt and bond the edges of PE films. The weld strength reaches 30N/15mm (ordinary sewn bags only 15-20N/15mm), eliminating the risk of
read more
PE Square Valve Bags for Agricultural Products
PE material (with a density of 0.91-0.96g/cm³) itself has a water vapor transmission rate of ≤5g/(m²・24h) (at 23℃, 90% RH). Combined with the heat-sealing process, it can isolate external moisture, preventing grains such as rice and flour
read more
Chemical PE Square Bottom Valve Bag
These bags make the most of polyethylene's natural ability to resist chemical reactions—especially high-density HDPE and specialized formulas. They can handle long-term contact with strong substances like 30% sulfuric acid, 40% caustic
read more

Why Choose Us

Professional Team

We has advanced production equipment and an independent R&D team. From high-quality raw materials to finished products. The complete production chain improves production efficiency, and continuously optimizes supply chain management to improve competitive advantages and enhance international competitiveness.

Advanced Equipment

Our Multiple three-layer film blowing machines. And advanced professional printing machines. Embossing-edge inserting machines and computer high-speed bag making have taken the company's production capacity and product performance to a higher level.

Our Certificate

The company has passed ISO9001:2015 "Quality Management System Certification", ISO14001:2015 "Environmental System Certification", and ISO45001:2018 "Occupational Health Management System Certification".

Our Service

Based on customer needs, we offer High-quality after-sales service, tracking usage, and positive feedback. Rapid response within 24 hours.

PE Valve Bag - Overview

A PE valve bag is a polyethylene (plastic) bag with a specialized, pre-formed opening called a valve through which material is filled using a high-speed filling machine or spout packer. Once filled, the valve automatically closes or can be easily sealed, creating a dust-free, spillage-proof, and stable, box-like package ideal for powders and granules like fertilizers, cement, and food products.

Product Specification

We offers the following product specifications

Name	PE Valve Bag
Material	100% new PE
Body Length range	440 mm to 920 mm
Body Width range	350 mm to 610 mm
Bottom Width range	90 mm to 180 mm
Color	White, Black, Orange or others
Surface	Anti-slip stripes
Printing color	8 colors on body; 2 colors on bottom
Packing	200pcs/bale or 2500pcs/carton
Lead time	25 days for 20'GP
Sample time	1) 10-12 days-If there is customized logo requiremenr
Sample time	2) 2 days for our stock samples for reference and be free
MOQ	20000pcs (bag size will affect MOQ)
Application	Widely for packing pulverous or granular material such as chemical fertilizers, synthetic materials, dynamite, foodstuff, salt, sugar, minerals and cement.

Features of PE Valve Bag

Polythene Valve Bag can be filled either automatically or manually with the main benefit of producing a square box type sack which sits very stable allowing you to store many bags on to a single pallet
– Internal or external valves to suit you filling equipment.
– Helps to keep the workplace dust free and clean.
– Resistant to Humidity and dust and prevent water ingress.
– Cleaner and more transparent printing which gives great product visibility
– Capability to being embossed on the body to prevent the bags slipping on the pallet or store.
– Its cube shape result in great palletizing
– Variety of size from 20kg up to 50kg.
– A cost-effective way of packing/transporting product

Application

01/

Industrial Packaging:

Powders and Granules: PE valve bags are commonly used to package products such as cement, fertilizers, resins, and plastic granules. Their excellent sealing capabilities ensure that these products remain dry and contained during transport and storage.

02/

Chemical Products:

Due to their resistance to many chemicals, PE valve bags are ideal for packaging chemical raw materials that might be corrosive or reactive.

03/

Dry Goods and Spices:

These bags are perfect for packaging dry goods and spices, such as rice, flour, coffee beans, and various seasonings, ensuring the products remain fresh and dry.

04/

Pet Food:

PE valve bags are also used for packaging pet food, maintaining the nutritional quality and preventing contamination.

05/

Pharmaceutical Packaging:

Medicines and Medical Devices: The non-toxic and safe properties of PE make these valve bags suitable for packaging pharmaceuticals and medical devices, ensuring they remain uncontaminated.

06/

Construction Materials:

Cement and Mortar: Due to their robustness and durability, PE valve bags are frequently used to package construction materials like cement and mortar.

Moisture-proof PE Block Bottom Valve Bag

Manufactured Process: PE valve bag

Film extrusion. Polyethylene resin (LDPE/LLDPE/MDPE blends) is blown or cast into mono‑ or co‑extruded film; gauge typically runs from 100–300 μm depending on product risk.

Surface preparation & printing. The film is corona‑treated or primed; graphics are applied by surface or reverse flexo (1–8 colors). Reverse print protects ink between layers, yielding scuff‑resistant, glossy art.

Tube forming & bottom welding. Film is folded and welded (heat/ultrasonic) into a tube; gussets and a block‑bottom are welded to create a flat, self‑standing base.

Valve construction. A PE fabric/film sleeve is inserted and sized to the packer spout ID; options include tuck‑in valves, sonic‑seal closures, or pre‑applied hot‑melt zones for post‑fill sealing.

Venting strategy. Micro‑perforation maps (laser/mechanical) or porous patches balance fill speed with dust control.

Quality gates. Film tensile and impact (e.g., method families equivalent to ASTM D882/D1709), sack drop tests (e.g., ISO 7965‑2 class), seal integrity, and coefficient‑of‑friction for pallet stability.

Customization

Sizes

Available in various dimensions to suit different packaging needs.

Valve Types

Options for self-sealing, internal, and external valves based on filling preferences.

Custom Printing

High-quality print capabilities for branding and labeling.

Gusseted Designs

Available for added stability and capacity.

Certificate

Package & Delivery

Package: Standard export package or Custom
Delivery: By air express, by sea

productcate-1-1

FAQ

Q: Are PE valve bags recyclable?

A: Often yes, when film‑only poly streams (#2/#4) exist. Always verify local acceptance and keep laminations simple.

Q: How do I size the valve to my packer?

A: Measure spout OD and add a pragmatic clearance (often +3–6 mm). Validate on a 10‑bag pilot at production BPM.

Q: Paper vs. poly—how to choose?

A: If humidity and puncture risk dominate, PE valve bags tend to win. If de‑aeration speed and paper‑stream recovery dominate, paper valve sacks have advantages. Many portfolios run both.

Q: What is your MOQ?

A: 1000PCS.

Q: Can I get samples?

A: Of course, we usually provide existing sample for free, however a little sample charge is needed for custom designs. Sampls charge is refundable when order is up to a certain quantity.

Q: How long is the lead time of the samples?

A: For existing samples, it takes 3-5 days .

Q: How long is the production lead time?

A: For some itesm we keep some stock that can be delived in 2 weeks. New poductioin leadtime 60-80 days.

Q: What is your payment term?

A: Discussed! T/T / Alipay /Paypal

Q: Can I customized my own Brand?

A: Yes we can do however you need to reach certain quantity for each item.

Q: How will you deliver the goods?

A: For some orders with small quanity we can deliver by air or express And for bulk and big quantity we will deliver to any one China adress you want.

We're professional pe valve bag manufacturers in China, specialized in providing high quality custom service and OEM service. We warmly welcome you to buy discount pe valve bag for sale here from our factory. Quality products and low price are available.

Carbon Black PE Valve Bags with Square Bottom, Heat sealed PE Square Valve Bag, Polyacrylamide PE Square Bottom Valve Bag