PO Plastic Bags
Your Professional PO Plastic Bags Manufacturer!
Dongguan Chengzhiyu Packaging Materials Co., LTD was established on November 2, 2023, and has quickly made its mark in the packaging materials industry. Located in Dongguan, a major manufacturing city, the company operates a modern workshop spanning over 6,000 square meters. This large facility ensures ample production space and provides a solid foundation for the company’s professional and large-scale development. Currently, the company's main business covers eco-friendly paper packaging, plastic packaging products, and customized packaging solutions, including premium gift boxes, product outer cartons, bubble bags, EPE foam, and various types of plastic-sealed packaging.
-
![LDPE High Pressure Bags]()
LDPE High Pressure BagsLDPE high pressure bags are made from high-pressure (high-pressure-polymerised) polyolefin film that is exceptionally soft and flexible, with elongation at break of at least 400%, so the pouch...read more -
![PO Side Gusset Bags]()
PO Side Gusset BagsPO side gusset bags are flat pouches with folded-in side gussets that expand outward when filled, converting a thin, shelf-stable pouch into a bag with real interior volume. Made of polyolefin...read more -
![Anti Rust PO Bags]()
Anti Rust PO BagsAnti rust PO bags are VCI (volatile corrosion inhibitor) polyolefin bags that protect cleaned metal parts without the need for anti-rust oil or grease. The PO film releases a controlled vapor...read more -
![PO Static Dissipative Bags]()
PO Static Dissipative BagsPO static dissipative bags are ESD-control pouches made from polyolefin film coated with a compound anti-static layer that holds surface resistance between 10^6 and 10^10 ohms and dissipates any...read more -
![PO Heavy Duty Sacks]()
PO Heavy Duty SacksPO heavy duty sacks are industrial-strength, multi-layer composite polyolefin bags built to carry 20-50kg of dry bulk material, powders, granules or components without stretch-out or seal failure....read more -
![Polyolefin Trash Bags]()
Polyolefin Trash BagsPolyolefin trash bags are heavy-gauge bin liners extruded from PO film at a minimum of 0.08mm, engineered to hold 10-15kg of wet or sharp waste without splitting at the corners. The film is...read more -
![PO Shopping Vest Bags]()
PO Shopping Vest BagsPO shopping vest bags are the familiar t-shirt-style carry bag with an integrated, one-piece handle punched from the same film, a wider body and a reinforced bottom designed to hold 5-8kg at the...read more -
![PO Flat Plastic Bags]()
PO Flat Plastic BagsPO flat plastic bags are a simple open-top, flat-tub pouch made from polyolefin film that blends the toughness of PE with the stiffness of PP. Extruded into a continuous tube and heat-sealed along...read more -
![Bottom Gusset Stand Up Pouches]()
Bottom Gusset Stand Up PouchesBottom Gusset Stand-Up Pouches, or Doypack-style pouches, are high-strength laminated bags built around a sealed bottom gusset that opens into a flat base when the pouch is filled. The pouch...read more -
![High Pressure PE Bags]()
High Pressure PE BagsHigh Pressure PE Bags are soft, highly stretchable poly bags extruded from high-pressure blown PE film. Unlike stiff low-pressure film, high-pressure film has an elongation at break of at least...read more -
![PO Gusseted Poly Bags]()
PO Gusseted Poly BagsPO gusseted poly bags are side-gusseted polyolefin bags that expand to hold bulky or irregularly shaped items while staying flat and wrinkle-free on the shelf. The side gussets fold inward and...read more -
![PO Rust Inhibitor Bags]()
PO Rust Inhibitor BagsPO rust inhibitor bags are polyolefin bags infused with a volatile corrosion inhibitor (VCI) that protects ferrous and non-ferrous metal parts during storage and export. Inside a sealed bag, the...read more
Why Choose Us
OEM/ODM Service
Our products can be tailored to various packaging scenarios, delivering practical and diversified packaging solutions for you.
Production Market
Our business covers seven major regions in China, we cooperate with many well-known enterprises, and have an annual production capacity of over 10,000 tons.
Advanced Equipment
Our factory is equipped with advanced mechanical equipment to ensure high-quality production. We have 15 film blowing machines, 20 bag cutting machines, and 6 fully automatic printing machines, creating an integrated industrial chain for film blowing, printing, and bag making.
Our Certificate
Our company has obtained the ISO9001 Quality Management System Certification and holds an authoritative GRS (Global Recycled Standard) report. These two certifications ensure full-chain compliance and controllability from raw material procurement and production processes to finished product delivery.
Applications of PO Plastic Bags
Logistics and Transportation
Heavy-duty Packaging: For packaging industrial parts, heavy cargo, and textiles, ensuring stability during stacking and handling to reduce shifting and damage risks.
Antistatic PO Bags: Used in electronics packaging to prevent electrostatic charge buildup, protecting sensitive circuits from damage and contamination.
Pallet Covers: Thickened PO material is used for pallet covers, withstanding friction and impact during long-distance transport.
Food and Fresh Product Packaging
Frozen Food: Their low-temperature resistance ensures flexibility during cold chain transportation and storage, preventing cracks.
High-Transparency Food Packaging: PO bags offer high clarity, perfect for displaying premium food products such as baked goods and candy gift boxes, while effectively blocking moisture and contaminants.
Anti-fog Modifications: Certain PO bags are modified to prevent condensation, improving visibility and enhancing the consumer experience.
Industrial and Manufacturing Applications
Moisture and Dust Protection: Composite PO bags provide moisture barrier protection for materials like chemical powders, plastic pellets, and hardware components.
Rust Protection: Mechanical parts can be packaged with PO bags combined with vapor corrosion inhibitors, extending the protective period.
Oil and Chemical Resistance: PO bags are suitable for packaging oils, cleaning agents, and other chemicals due to their resistance to oil and chemical corrosion.
Consumer and Retail Applications
Shopping and Gift Bags: Ideal for branded products, gift bags, and promotional packaging, PO bags offer excellent shape retention and printability.
Functional PO Bags: Stand-up pouches, zipper bags, and other functional PO bags are widely used for pet food, nuts, seeds, and personal care products due to their reusable features and shelf display functionality.
Special Function Applications
UV Protection: PO bags with UV-resistant features are used for outdoor product protection, ensuring durability and safety in harsh environments.
Flame Retardant: PO bags designed with flame-retardant properties are used in industries that require high safety standards, such as construction materials packaging.
Raw Material Selection and Blending
The raw material system typically combines linear low-density polyethylene (LLDPE) and polypropylene (PP) as the base, with added modifiers for specific functions such as antistatic, anti-fog, or flame retardant properties. The materials are blended using high-speed mixing and melt mixing to create a strong network structure that ensures both rigidity and flexibility.
Co-extrusion Process
In the co-extrusion process, multiple layers of molten plastic are combined in a single step through a die, creating a multi-layer film. The outer layers provide rigidity, while the inner layers improve heat-sealing properties. This step ensures a balanced performance for the final product.
Molding Process
Blow molding is commonly used for producing PO plastic bags, where the blended melt is extruded into a preform and stretched in two directions by air, resulting in uniform strength and excellent thickness. The casting method produces films with superior transparency and smooth surfaces, suitable for high-clarity display bags.
Raw Material Selection and Blending
The raw material system typically combines linear low-density polyethylene (LLDPE) and polypropylene (PP) as the base, with added modifiers for specific functions such as antistatic, anti-fog, or flame retardant properties. The materials are blended using high-speed mixing and melt mixing to create a strong network structure that ensures both rigidity and flexibility.
Co-extrusion Process
In the co-extrusion process, multiple layers of molten plastic are combined in a single step through a die, creating a multi-layer film. The outer layers provide rigidity, while the inner layers improve heat-sealing properties. This step ensures a balanced performance for the final product.
Molding Process
Blow molding is commonly used for producing PO plastic bags, where the blended melt is extruded into a preform and stretched in two directions by air, resulting in uniform strength and excellent thickness. The casting method produces films with superior transparency and smooth surfaces, suitable for high-clarity display bags.
Specification
|
Product name |
PO Plastic Bags |
|
Material |
PO |
|
Size |
Customized size |
|
Thickness |
0.05-0.2mm or Custom Thickness |
|
Color |
Black/transparent/colored or customized |
|
Logo |
Custom |
|
Sealing method |
Zip-Lock/Adhesive Flap/Open-Top/Heat Seal or Welded Seams |
|
Printing |
Client artwork |
|
Sample |
Free Samples |
|
Delivery Time |
5-7 working days after design confirmed. |
Packaging and shipping
Our certificate
FAQ
We are one of the most reliable po plastic bags manufacturers and suppliers in China. Welcome to wholesale bulk customized po plastic bags at competitive price from our factory. If you have any enquiry about free sample, please feel free to email us.
po plastic bags, PO Anti Static Bags, PO Garbage Bags