The raw materials for PE cosmetic tubes are transparent which means all PE tubes are transparent at the first place. Then how do we make colored tubes? Well, colored tubes are made by added color master.
PE tube materials
Take a detail check on the common cosmetic tubes, basically, a welding line can be found on ABL, PBL and HGL tubes, while PE cosmetic tube is seamless as it is extruded one time directly by machines. See below welding line on the ABL tube.
So printing is a special case for PE cosmetic tube, there is a small space that the printing machines cannot reach due to the bending. Normally, we suggest leaving at least 3mm no printing area at tubes shoulder for PE cosmetic tube. If customer insist extending the printing to tube shoulder. It could be achieved by second heading, but this will increase the cost.
tube printing area
Many people thought the tube hardness is decided by tube thickness, I felt the same when I was a totally fresh guy to this industry. Actually, the hardness of PE tube is decided by two material’s proportion: LDPE (Low Density Polyethylene) ,MDPE and HDPE (High Density Polyethylene). For instance, adding more HDPE could adjust the tube to be harder.
This is huaxin. We do tube packaging only, and we do it well.