PP suitcase is polypropylene resin
Since homopolymer PP is very brittle at temperatures above 0C, many commercial PP materials are random copolymers with 1 to 4% ethylene added or pinched copolymers with higher ethylene content.
PC in a suitcase is aka "polycarbonate". Polycarbonate is a tough thermoplastic resin named for its internal CO3 group. By bisphenol A and carbon oxychloride synthesis. The most commonly used method is the melt transesterification method (bisphenol A and diphenyl carbonate are synthesized by transesterification and polycondensation).
PP suitcase: The copolymer type PP material has a lower thermal distortion temperature (100C), low transparency, low gloss, low rigidity, but has stronger impact strength. The strength of PP increases with increasing ethylene content.
The Vicat softening temperature of PP is 150C. Due to the high degree of crystallinity, this material has good surface stiffness and scratch resistance properties.
PC suitcase: It is an amorphous thermoplastic resin with excellent comprehensive properties, with excellent electrical insulation, elongation, dimensional stability and chemical resistance, high strength, heat resistance and cold resistance; also has Self-extinguishing, flame retardant, non-toxic, colorable, etc.
PP suitcase: have stronger impact strength. The surface stiffness and scratch resistance properties of this material are excellent.
PC suitcase: Its strength can meet various needs from mobile phones to bulletproof glass. Compared with metal, its hardness is insufficient, which makes its appearance easier to scratch, but its strength and toughness are very good, whether it is heavy pressure or general , as long as you're not trying to rock it, it's long enough.
What’s the character of this group 3PCS set PP luggage suitcase？
1. PP luggage
2. 20"24"28" 3pcs set
3. Double wheel
4. Iron trolley system
5. Customize brand
6. Without expandable part
7. 210D polyester inside lining
8. Accept customize brand, OME/ODM order 9.1x40HQ container can load 630 sets ( 3 pcs set )
Product Warranty: 1 year