Polymer additives/Hair dyes

Positive UV-I PS Plate

Product name:	Positive UV-I PS Plate
Specifications:	Width, mm: ≤1800 Thickness, mm: 0.15 – 0.3 Surface roughness, μm: 0.55 – 0.80 Oxidation layer weight, g/m²: 2.50 – 3.00 Sensitization layer weight, g/m²: 2.10 – 2.30 Exposure energy, J/cm²: 150 – 180 Dot reproduction ability, %: 2 – 98 Definition, μm: ≤10 Run-length: 50,000 – 100,000
Features:	♦ The surface of the plate is of grains,shortening the time of evacuating the vacuum,reducing the halation between the exposure district and the non-exposure district. ♦ Well distributed multigrains ♦ Faster exposing speed ♦ Good dot-reproduction ♦ Strong latitude adaptability
Instructions:	♦ Exposure:	Iodine gallium light of plate copying apparatus -- 3kw Light distance: 1m Exposure time: 50 – 70 seconds
	♦ Developing:	Developer powder and liquid for conventional plates Developer liquid preparation: For machine developing: Vconcentrate : Vwater = 1 : 4 For hand developing: Vconcentrate : Vwater = 1 : 8 Developer powder preparation: Totally dissolve one bag of developer powder in 15 liters water Developing time: around 30 seconds Developing temperature: 23±2°C
	♦ Removing:	The plate should be cleaned by water immediately when image remover paste or liquid are used on it, which normally not be over 45 seconds.
	♦ Gumming:	To avoid plate surface getting oxide and strengthen hydrophilic ability, protection gum should be put uniformly on the cleaned plate.
	♦ Baking:	Baking temperature: 250°C Baking time: 5 - 8 minutes
	♦ Stock and Unseal:	Stock temperature: 10 - 30°C Humidity: ≤65% Safety light: Yellow light
	♦ Shelf life:	18 months