China Custom PE Square Bottom Bag Manufacturers Factory - OEM PE Square Bottom Bag

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.

Heavy Duty PE Square Bottom Bag
Functional Modifiers:. UV stabilizers (outdoor storage). Permanent/migratory antistatic agents (hazardous material packaging). FDA/EC 1935-compliant additives (food contact).
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Gravure Printing PE Square Bottom Bag
Small: 300×300×500mm – 500×500×800mm | 5-20kg capacity. Ideal for food additives, specialty chemical samples, or small-batch goods requiring clear labeling.
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Flexographic Printing PE Square Bottom Bag
Flexographic printing PE square bottom bag retain the structural advantages of block-bottom designs while incorporating the characteristics of flexographic printing. That's why their specifications are designed to balance flexibility and
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Industrial Dust Proof PE Square Bottom Bags
Industrial equipment dust-proof bags need to take into account protective strength, space adaptability, and reusability. Therefore, in terms of specification design, more emphasis is placed on durability and customization.
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PE Ion Exchange Resin Square Bottom Valve Bag
Polyethylene (PE) is a material with excellent chemical stability. It can resist various substances that ion exchange resins may come into contact with, such as acid-base solutions and organic solvents. This way, the packaging is not
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PE Water Soluble Fertilizer Square Bottom Bag
PE Water Soluble Fertilizer Square Bottom Bag are a very practical type of packaging. They come with many advantages, such as a stable structure, high space utilization, and good sealing performance. Their sizes usually vary depending on
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Catalyst PE Square Bottom Valve Bag
In terms of packaging design, Catalyst PE Square Bottom Valve Bag need to take into account the chemical properties of catalysts, such as moisture resistance, pollution prevention, and corrosion resistance. Their advantages and size
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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 Square Bottom Bag - Overview

A PE Square Bottom Bag is a stand-up plastic packaging bag made from polyethylene (PE) with a unique square-shaped base, allowing it to remain upright for easy loading, storage, and display of products. These bags are known for their durability, abrasion resistance, flexibility, and waterproof qualities, making them suitable for various applications including food packaging and general retail items.

Product Specification

We offers the following product specifications：

Type	FIBC Bag
Feature	Antistatic
Shape	Square Bottom Bag
Width	2690±5mm
Colour	Transparent, Black (Customized)
Transparent, Black (Customized)	±8%mm
Yield Tension	≥22n
Average Puncture Strength	≥3.5n
Tensile Ratio Average	≥833%
Tensile Ratio Single Point	≥795%
Transport Package	Carton, Pallet
Specification	Customizabled
Production Capacity	5, 000, 000/Month

Advantages of PE Square Bottom Bag

Stability and Display: The flat, square bottom provides excellent shelf stability, allowing the bag to stand on its own, which is crucial for visibility and convenience for consumers.

Logistics and Storage Efficiency: The flat base makes bags stackable and space-efficient, which reduces storage and transportation costs.

Increased Filling Volume: The design allows the bag to be filled with more product while using the same amount of material compared to other bag types.

Superior Product Protection: Polyethylene (PE) material offers good tensile strength, abrasion resistance, and flexibility, protecting the contents from damage and external factors.

Versatility and Customization: PE square bottom bags are adaptable to various products, such as dry goods, snacks, and even liquids, and can be customized with clear panels or different barrier materials to meet specific product needs.

Enhanced Branding: The flat panels provide a large, printable area for graphics and branding, making them effective for brand building and attracting customers.

Application

Medical machine packaging, medical product packaging, aseptic product packaging, dust-free product packaging;

Electronic parts packaging, direct contact with product packaging;

Semiconductor, optical instrument packaging, dust-free indoor product packaging;

Hard disk drives, hardware products packaging, components packaging;

Product packaging, no special requirements product packaging;

Materials of PE Bag

Polyethylene bags are made from polyethylene, a thermoplastic polymer that is derived from crude oil. Polyethylene is a versatile material that can be used to make a variety of products, including bags, bottles, and containers. There are two main types of polyethylene used in bag production: low-density polyethylene (LDPE) and high-density polyethylene (HDPE). LDPE is more flexible and transparent, while HDPE is more rigid and opaque. In addition to polyethylene, other materials such as colorants and additives may be used in bag production.

Process

Blown Film Extrusion
The process of making polyethylene bags using blown film extrusion begins with the raw material, which is typically a pelletized form of polyethylene resin. The resin is fed into an extruder, which is a machine that melts the resin and forms it into a continuous tube of molten plastic.The molten plastic tube is then fed into a circular die, which is a tool used to shape the plastic. The die is positioned in front of a cooling unit, which cools the plastic as it exits the die.As the plastic exits the die, it forms a continuous tube of plastic that is still in a molten state. This tube is then passed through a set of nip rollers, which flatten the tube into a flat sheet of plastic.

Extrusion
The extrusion process is used to create the film that will become the bags. In this process, polyethylene resin pellets are melted down and then forced through a die to create a continuous tube of plastic film. The tube is then cooled and flattened, and may be treated with additives or coatings to improve its performance. The extrusion process is highly dependent on temperature and pressure control to ensure the film has the desired properties.

Printing and Coloring
Polyethylene bags may be printed or colored for branding or aesthetic purposes. Printing can be done using a variety of techniques, including flexographic, rotogravure, and digital printing. Coloring can be achieved by adding pigments or dyes to the polyethylene resin before extrusion, or by using a process called surface printing. Environmental considerations should be taken into account when deciding to print or color bags, as these processes can contribute to pollution.

Bag Making
Once the plastic film has been produced, it is fed into a bag-making machine. There are several types of bag-making machines, including bottom-seal, side-seal, and t-shirt bag machines. These machines cut the film into the desired size and shape, and then seal the edges to create the bags. The size and shape of the bags will depend on the intended use.

Quality Control
Quality control is important in bag production to ensure that the bags are strong, durable, and safe for use. Quality control tests may include measuring the thickness and strength of the bags, checking for leaks or tears, and testing the bags for resistance to punctures and impact. Proper quality control is essential for ensuring that bags meet industry standards and are safe for use by consumers.

Customization

Requirement Discussion

Design Proposal

Our professional team will develop a design proposal and provide a quotation based on your requirements.

Sample Production

We produce samples according to the design proposal and conduct rigorous testing.

Mass Production

Upon your approval, we commence mass production to ensure timely delivery and consistent quality.

After-Sales Service

We offer ongoing technical support and service to ensure the long-term stable operation of our products.

Certificate

Package & Delivery

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

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FAQ

Q: What type of bag is a PE bag?

A: Polyethylene (PE) bags are more flexible, cost-effective, and resistant to cold temperatures, making them common for grocery bags, food packaging, and general storage. However, they tend to have lower clarity, reduced heat and chemical resistance, and may degrade faster under UV exposure.

Q: What is the difference between pinch bottom bags and block bottom bags?

A: Multi-layered paper or paperboard is used to make the bags known as pinch bottom or PBOM bags. Woven polypropylene (PP) fabric with a laminated covering is used in the production of AD Star Bags, also known as Block Bottom Valve Bags.

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

Flexographic Printing PE Square Bottom Bag, PE Ion Exchange Resin Packaging, PE Water Soluble Fertilizer Square Bottom Bag