Selecting the Right Polypropylene: Key to Quality Corrugated Plastic

When I think about writing blog post about the importance of selecting the right

polypropylene for corrugated plastic, it’s essential for me to recognize how this choice underpins the overall quality, durability, and functionality of the final product. As a sales manager at COROPAK, my hands-on experience and technical insight place me in a unique position to shed light on this topic.


Understanding Polypropylene in Corrugated Plastic

Polypropylene is the backbone of corrugated plastic, a material revered for its lightweight nature, durability, and resistance to water, chemicals, and impact. This versatility makes it ideal for a wide range of applications, from signage and packaging to automotive components and construction materials. The type of polypropylene used significantly influences the product’s performance characteristics, such as its strength, flexibility, and environmental resistance.


Selecting the Right Grade

Not all polypropylene is created equal. The market offers a multitude of grades, each engineered to meet specific needs. For instance, the high-density grade offers increased rigidity and is perfect for items requiring structural integrity. In contrast, a copolymer grade provides enhanced impact resistance and flexibility, suitable for products subjected to stress or low temperatures.

The Impact of Additives

Additives play a crucial role in tailoring the properties of polypropylene. UV stabilizers, for example, extend the material’s life when exposed to sunlight, making it indispensable for outdoor applications. Antistatic agents reduce static buildup, essential in electronic packaging to protect sensitive components. Understanding the synergistic effects of these additives is key to unlocking the full potential of corrugated plastic products.

Sustainability Considerations

In today’s environmentally conscious market, the sustainability of materials is increasingly under scrutiny. Polypropylene, being recyclable, offers a green advantage. However, selecting the right polypropylene involves balancing performance with recyclability. Advances in polymer science are continuously improving the eco-friendliness of these plastics, making them a responsible choice for businesses and consumers alike.

A Real-World Example: COROPAK’s Approach

At COROPAK, we’ve honed our product development process to optimize the selection of polypropylene. By collaborating closely with our suppliers, we ensure that the polypropylene used in our corrugated sheets and boxes meets stringent quality standards while aligning with our sustainability goals. This meticulous approach has enabled us to create products that are not only superior in quality but also environmentally responsible.


Looking Ahead

The future of corrugated plastic is exciting, with ongoing innovations in polypropylene composition and recycling technologies. As we continue to explore new frontiers in material science, the emphasis remains on creating products that are durable, functional, and sustainable. Selecting the right polypropylene is more than a technical necessity—it’s a commitment to excellence and environmental stewardship.

In conclusion, the choice of polypropylene in corrugated plastic manufacturing is a pivotal decision that impacts the product’s performance, application possibilities, and environmental footprint. At COROPAK, our commitment to quality and sustainability drives us to select only the best materials, ensuring that our customers receive products that exceed their expectations. As we look to the future, we’re excited about the possibilities that new advances in polypropylene will bring to the industry and our product offerings.

Discover more about our commitment to quality and innovation at our website: https://www.coropak.com.


Navigating the intricacies of material selection underscores the expertise and dedication behind every product we offer. At COROPAK, we’re not just selling corrugated plastic; we’re delivering a promise of quality, innovation, and sustainability.

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+ 86 186 6221 7067

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
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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Email: sales@coropak.com

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