When deciding between polycarbonate and polypropylene luggage, the best choice depends on your specific needs. Polycarbonate is known for its durability and resistance to impacts, making it ideal for frequent travelers who require sturdy baggage. It's also relatively lightweight and offers flexibility, which can absorb impacts without cracking or breaking. On the other hand, polypropylene luggage is also durable but is generally more affordable than polycarbonate. It's slightly heavier and may not offer the same level of impact resistance as polycarbonate. However, for travelers on a budget or those who travel less frequently, polypropylene provides a good balance of durability and cost-effectiveness. In summary, for rugged use and frequent travel, polycarbonate is better; for occasional travel with budget considerations, polypropylene may suffice.

PPC. or Polypropylene Copolymer. is a type of plastic made up of propylene and various copolymerized monomers. such as ethylene. This process results in more flexible and less brittle polymers compared to pure polypropylene. making them well-suited for industries like automotive. packaging. and consumer goods. The density range of PPC typically falls between 0.890-0.910 g/cm3 due to the specific composition and proportion of monomers used.

Since density plays a significant role in a material's strength. stiffness. and processing properties. manufacturers can adjust these qualities by altering the copolymer makeup according to their desired application. With its diverse characteristics. PPC materials require a careful balance between stiffness. impact resistance. and flexibility for optimal use.

Primer is crucial when working with PVC cement, especially for pressure applications or situations requiring a robust bond. It cleans and softens the PVC surface, preparing it for a stronger weld with the cement. Primer usage mandates vary by codes and manufacturers, so it's essential to check local regulations and product instructions. Skipping primer might result in a weaker joint, potentially leading to leaks or failure. For non-pressure applications like drainage, some might opt to forgo primer, though it's generally recommended for optimal adhesion and reliability.