Autotype Autosol Plus Classic ll

Item#:autosolPLUS

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Overview
Features
Additional Info

Product Description

Product Description:

Autotype PLUS II Classic is a blue/green high quality, medium/high solids emulsion supplied with diazo syrup sensitiser. Autotype PLUS II Classic is the original universally resistant emulsion that has become a world favourite.

Features:

Resistant to a wide range of solvent, UV curing and screen printing water based inks, 34% solids, high quality, durable, wide exposure latitude, easily decoatable, diazo syrup sensitiser.

Benefits:

Suitable for a wide range of applications, proven performance in production, highly tolerant to different processing conditions.

General Information:

See features section 'How to use PLUS emulsions' for detailed advice.

Applications

Resistance to a wide range of water, solvent and co-solvent inks makes AutotypePLUS II Classic a suitable direct photostencil for most screen printing applications.

Autotype PLUS II Classic is particularly recommended for applications where good print durability, print quality and easy removal after printing is required.

Basic Coating Techniques

Coating Troughs

It is essential to use a good quality coating trough if you want to achieve a consistent result. The edge of the trough must be straight with no 'nicks' or other damage. The profile of the edge will influence the amount of emulsion deposited with a sharp edged trough depositing less than a rounded edged trough. In general it is better to select a rounded edged trough as this is slightly more resistant to edge damage. The trough should be tough enough not to flex during use and be able to stand upright when full of emulsion. A lid to the trough can help reduce airborne contamination and slow down drying in the trough.

Coating Basics

The objective of emulsion coating is to deposit an even, blemish free coating in a reproducible way. This can only be achieved if the following parameters are controlled: coating angle/pressure/speed and more surprisingly emulsion level in the trough.

Angle

The coating angle will affect the volume of liquid deposited. Too acute an angle and the trough shoulders will bow the mesh, too great an angle and the trough will scrape rather than coat.

Pressure

The coating pressure will affect the volume of liquid deposited. Too high a pressure could potentially damage the mesh whereas too little pressure will lead to uneven coating as the trough does not 'meter' the emulsion.

Speed

Too fast a coating speed will lead to air bubbles due to incomplete encapsulation of the mesh fibres - especially on coarse mesh counts <77/cm (<200/inch). Whereas too slow a speed could lead to high coating thickness due to excessive push through of the emulsion.

The picture opposite shows how the air bubbles have been trapped on the 'lee' of each fibre during coating. This will create a weak area that is likely to pinhole on long runs.

Top Tip

Whatever coating regime you choose always finish off the initial wet on wet coatings from the squeegee side. This will ensure that the wet coating is pushed through to the print side where you want it leaving just a thin layer on the squeegee side to provide the durability.

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