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What is corrugated plastic?

Hey there, it’s Pitt Wang, your friendly sales manager at COROPAK. If you’ve ever wondered about corrugated plastic, you’re in the right place. Let’s dive into what it is and why it’s such a fantastic material for so many applications.


In today’s industrial landscape, corrugated plastic sheets are a versatile and indispensable material. Whether you’re in advertising, construction, logistics, or packaging, understanding the benefits and applications of corrugated plastic sheets can help streamline your operations and improve your bottom line.

Definition and Composition

Corrugated plastic sheets, often known by trade names such as Coroplast, IntePro, corflute, cartonplast, and Correx, are made from high-impact polypropylene resin. These sheets are structured similarly to corrugated fiberboard, featuring a twin-wall design that offers enhanced strength and durability. This lightweight yet tough material is chemically inert, with a neutral pH, making it resistant to most oils, solvents, and water, even under adverse weather conditions.

Manufacturing Process

The production of corrugated plastic sheets involves an extrusion process. This process allows manufacturers to create sheets in a variety of colors, thicknesses, and weights to meet specific customer needs. Additionally, sheets can be enhanced with additives for special properties such as ultraviolet protection, anti-static capabilities, flame retardancy, and custom colors. These modifications ensure that the material can be tailored for specific industrial applications.

Common Applications

Signage

Corrugated plastic sheets are widely used in the signage industry. Their lightweight, durable, and water-resistant properties make them ideal for both indoor and outdoor applications. Typical uses include real estate signs, election signs, promotional displays, and safety signs. These sheets can be printed on easily, ensuring vibrant and long-lasting graphics.

Packaging

In the packaging sector, corrugated plastic sheets are valued for their strength and reusability. They are used to create reusable containers, shipping boxes, and protective packaging for various products. Their ability to withstand harsh conditions makes them perfect for logistics and transportation.

Construction

Construction companies utilize corrugated plastic sheets for various purposes. They serve as temporary floor coverings, countertop templates, and concrete molds. The material’s durability and ease of handling make it suitable for protecting surfaces and creating forms on job sites.

Logistics

In logistics, corrugated plastic sheets play a crucial role in protecting goods during transit. They are used to create custom shipping containers, pallet tops, and layer pads that separate and secure items on pallets. The lightweight yet sturdy nature of these sheets reduces shipping costs while ensuring the safe transport of goods. Their water and chemical resistance make them ideal for long-distance and international shipping where exposure to various environmental conditions is a concern.

Industrial Packaging

Industrial packaging benefits greatly from the versatility of corrugated plastic sheets. They are used to make durable, reusable containers for transporting heavy or delicate items. These sheets can be customized to fit specific dimensions and reinforced for added strength. Industries such as automotive, electronics, and machinery rely on these containers to protect components and equipment during storage and shipment. The ease of cleaning and reusability of corrugated plastic containers also contribute to cost savings and sustainability.

Beverage Industry

The beverage industry utilizes corrugated plastic sheets extensively for packaging and transportation. These sheets are used to create bottle dividers, trays, and crates that provide superior protection against breakage and spillage. Their resistance to moisture and chemicals ensures that the packaging remains intact and sanitary, which is crucial for food and beverage safety. Additionally, the lightweight nature of corrugated plastic reduces the overall weight of shipments, leading to lower transportation costs and improved efficiency.

Benefits

Durability and Resistance

Corrugated plastic sheets are known for their exceptional durability. They resist water, chemicals, and impacts, making them suitable for a wide range of environments. This durability ensures a long lifespan, reducing the need for frequent replacements.

Lightweight and Easy to Handle

Despite their strength, corrugated plastic sheets are lightweight, making them easy to transport and handle. This characteristic reduces shipping costs and simplifies installation processes.

Cost-Effectiveness

Compared to materials like metal or wood, corrugated plastic sheets offer a cost-effective solution. They provide similar benefits at a fraction of the cost, making them an economical choice for businesses.

Recyclability and Environmental Benefits

Being made from polypropylene, corrugated plastic sheets are recyclable. This recyclability contributes to environmental sustainability by reducing waste and promoting the reuse of materials.

Comparison with Other Materials

Corrugated Plastic vs. Corrugated Fiberboard

While both materials share a similar structural design, corrugated plastic offers superior durability and resistance to moisture and chemicals. Fiberboard is more prone to degradation in wet conditions, whereas plastic sheets maintain their integrity.

Corrugated Plastic vs. Solid Plastic Sheets

Solid plastic sheets are heavier and more rigid compared to their corrugated counterparts. Corrugated plastic sheets provide a lighter, more flexible option without sacrificing strength, making them more suitable for applications requiring frequent handling and transportation.

Technical Specifications

Corrugated plastic sheets are available in various sizes and thicknesses to meet diverse requirements. Common thicknesses range from 2mm to 25mm, and standard sizes include 900mm x 600mm, 1830mm x 1220mm, and 2440mm x 1220mm. These sheets also meet performance standards and certifications, ensuring reliability and safety in their applications. Additionally, special treatments like corona treatment enhance printability, making them ideal for high-quality graphics and signage.

Conclusion

Corrugated plastic sheets are a versatile and cost-effective solution for many industries. Their durability, lightweight nature, and environmental benefits make them an ideal choice for businesses seeking reliable and sustainable materials. Whether you need signage, packaging, or construction materials, corrugated plastic sheets offer unmatched advantages. Consider integrating this versatile material into your operations to enhance efficiency and performance.

For more information and to explore our range of corrugated plastic products, contact us at COROPAK. Our team is ready to assist you in finding the perfect solution for your needs.

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Pitt

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Pitt

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Technical Data Sheet
Physical Qualifications 
Qualifications Method Unit Polypropylene *
special PP weight ISO 1183gr/cm³0.907
water absorbtion ISO 62%0.02
Thermal Specialities 
Speciality Method  Unit Polypropylene*
Air indexASTM D696mm/m°C0.18
Special temparatureDSCJ/g°C1.68
Thermic inflexion temp. ISO 75°C78
Thermic inflexion temp.ISO 75°C52
vicat softening temp. ISO 306°C148
vicat softening temp.ISO 306°C78
Mechanic Qualifications  - 1
qualifications Method  Unit Polypropylene*
drawing resistance ISO 527MPa38
split point ISO 527%800
stretch index ISO 178MPa1250
impact resistance ISO 180kJ/m²80
Shore hardnessISO 868-66
Mechanic Qualifications  - 2
qualifications Method  Unit Polypropylene*
comparasion of maximum 2,1mm/350grN/cm²Min. 3,7
tension 2,0mm/400grN/cm²Min. 1,4
3,0mm/650grN/cm²Min. 5,5
4,5mm/1000grN/cm²Min. 14,4
Optical Characteristics 
Specialities MethodUnitcorrugated sheet 
light transmissivity 2,0mm/400gr%58
2,5mm/450gr%53
3,0mm/500gr%51
4,0mm/1000gr%37
Electrical Characterictics 
qualifications  MethodUnitcorrugated sheet 
surface resistanceASTMD 257ΩCa. 1013
Electric static ( at 1MHz’)ASTMD 150--2,25
Division rate  (at  tg δ 1 MHz )ASTMD 150--‹ 5×10-4
Electric resistance  ( 500 V/sec)ASTMD 149kV/mm70

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