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Photopolymer Printing Plates

Release time:2017/3/29 14:06:13 Access times:2626

Photopolymer Printing Plates

Photopolymer Plates are the modern in-house method of making hot foil printing plates. Polymer plates as they are generally referred too are suitable for printing on to most surfaces, such as paper, card, fabrics, leather, plastics etc. They do not print well on textured and matte surfaces, and on ceramics, metal etc.

The main advantage of polymer plates to metal plates is the ability to be able to make them yourself. Being able to make a polymer printing plate in about 30 minutes is a major time saver and because there is no minimum order charge, it’s a lot cheaper, especially for small print runs.

Polymer is a plastic, and as such is an insulator, so it takes longer for heat to transfer through the polymer then it does through metal plates. When printing, heat is lost at the print face each time the hot foil is bonded to the item being printed. Heat recovery to its original set temperature takes longer in polymer than in metal and so, polymer is not recommended for use on high speed machines.

When using polymer plates we recommend you use the 1mm plate where possible. To print faster, the thinner the plate the quicker the heat recovery, the faster you can print. When printing on soft materials like velvet fabric, soft leathers, and thin foams etc. a thicker polymer plate is recommended. We supply 1.00mm, 1.30mm and 1.45mm thickness polymer plates in the high temperature PPM/H Range and 1.00mm, 1.45mm & 1.75mm in the low temperature PPM Range.

PPM/H Range of high temperature plates have a maximum recommended temperature setting of 180ºC (356ºF), however we recommend an operating (using) temperature of around 135ºC (275ºF).

PPM Range of low temperature plates have a maximum recommended temperature setting of 140ºC (284ºF), however we recommend an operating (using) temperature of around 110ºC (230ºF).

The high temperature polymer plates tend to produce a superior print image in comparison with the low temperature polymer plates.

Both the high and low temperature polymer plates need to be dried properly before printing. We recommend you mount the polymer plate onto the “honeycomb chase” using the clipper block system or, using die bonding tape stick the polymer plate onto the “die block” and place that into the type chase. Leave the polymer plate to heat up and dry before you start printing. We recommend at least 20 minutes without any significant pressure applied to it.

Photopolymer plates are hygroscopic and , as such have a tendency of absorbing moisture from the air and therefore, this drying process has to be repeated every time you use polymer plates.


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