Common problems caused by etching and printing plate and its causes

One, when the development of the photosensitive slurry off or violent

A, baking time is too long or the temperature is too high

B, the photosensitive paste is too thick or uneven

C. Insufficient exposure time

D, developer concentration is too high or too long

E, photosensitive paste has deteriorated

F, harmful light intrusion

Second, the local pattern does not appear when developing

A. Insufficient blackness of film or reverse film surface

B, baking time is too long or the temperature is too high

C, film and photosensitive paste does not fit closely

D. Exposure time is too long

E, thick coating of photosensitive paste

Third, the photosensitive slurry falls off during etching

A, the photosensitive layer is too thin

B, baking time or temperature is too low

C, the etching water concentration is too high


Source: China Screen Printing Network