Features Of ESD PP Plastic Roll
PP extruded sheet roll is a popular thermoforming materials for food packaings, electronic packagings, cosmetics packagings medical packagings and hardware packaings.,etc. The width of PP Plastic sheet roll is 300~900mm. The thickness of PP Plastic sheet roll range from 0.3~2.0mm. Colorful PP sheets could be produced according to Pantone. card. When Gulungan lembaran PP used in food industry, the temperature could reach -40℃ to 120℃. For examples, Sushi tray, bento box, cup, cup lids and so on. Gulungan lembaran ESD PP widely used in electronic inductries for antistatic/conductive performance.
Specification of ESD PP Plastic Roll
Lembar pp Blister Problem Treatment Sheet Forming
1. heating too fast.
The following methods can be taken to exclude: appropriately reduce the heater temperature.Slow down the heating speed appropriately.Properly increase the distance between the sheet and the heater, so that the heater from the sheet some further.
2. uneven heating.The following methods can be adopted to exclude:
(1) with baffle plate, air distribution hood or screen screen to adjust the distribution of hot air, so that the sheet parts evenly heated.
(2) check whether the heater and shelter net is damaged, and repair the damaged parts.
3. wet sheet.The following methods can be adopted to exclude:
(1) pre-drying treatment.For example, the thickness of 0.5 mm polycarbonate sheet should be dried for 1-2h at the temperature of 125-130 ~C, and the thickness of 3mm Lembar pp should be dried for 6-7h.The thickness of 3mm * wood should be dried at 80-90 ‘E temperature for 1 — 2 hours, and should be immediately after drying hot forming.
(2) preheating treatment.Change the heating method to heating both sides.Especially when the thickness of the sheet is above 2nan, the two sides must be taken and heated.Do not open the Lembar pp of moisture-proof packaging too early.Lembar pp should be unsealed before hot forming and formed immediately.