■
A.The packaging symbol of polyimide film in storage and transportation
1, Polyimide film should be sold in roll supply rolled on the tube core. Each roll of polyimide film needs to be packed with plastic bags in a dry, clean container.
2, Each packaging box of polyimide film should indicate the type, product name, specification, batch number, gross weight, net weight, production date and polyimide film manufacturer name. And polyimide film product certificate should also be included. At the same time, polyimide film box should be marked with the words "moistureproof" and "strike".
3, Polyimide film should be stored in dry and clean room. The storage period of polyimide film is 2 year startingfrom the date of delivery. Overdue polyimide film can still be useful if it is qualified to the standard inspection.
4, In the process of storage and transportation, polyimide film needs to be store in the places to avoid being affected by damp and mechanical damage.
- The technical requirements ofpolyimidefilm
1, Appearance: polyimide film surface is smooth. There should be no fold, tear, pellet, air bubble, pinhole, and foreign material defects in the polyimide film surface. The edge of polyimide film also needs to be neat without damage.
2, Size requirements of polyimide film
1) Thickness and allowable deviation: The recommended thickness of polyimide film also can be defined according to user requirements.
2) Width: The width of polyimide film should be no less than 250 mm, with a deviation of + / - 1.6 mm. According to the users’ need, polyimide film can be adjusted to different specifications polyimide tape.
3) Length: The length of polyimide film can be specified according to user requirements.
- Performance requirements ofpolyimidefilm
In the synthesis of polyimide film phase, it should be protected with nitrogen. The reaction time is about 3 hours. By thermo-gravimetric analysis, it shows that polyimide film has high thermal stability.
