What is an overprint varnish?
Overprint varnishes (OPVs) are coatings applied to an already printed sheet or web. The primary reasons for applying an OPV are gloss enhancement, stain resistance, edge fusion resistance, burnish or scuff resistance, and resistance to discoloration from absorption of impurities in the environment.
What is aqueous varnish?
Aqueous coating is a water-based, environmentally friendly coating that dries quickly when applied to printed materials. This coating is clear, but also has the capability to create a satin, soft-touch or glossy finish.
Is aqueous coating a varnish?
Aqueous coating is a clear, fast-drying water-based coating that is used to protect printed pieces. It provides a high-gloss, satin, or soft touch finish. Because it is water-based, aqueous coating is more environmentally friendly than varnish or UV coatings.
What is the difference between varnish and aqueous coating?
Aqueous coatings provide more substantial scuff-resistance than varnishes. Aqueous is typically applied to the entire printed piece, usually by the last unit on a printing press. Due to its water base, aqueous coating is more environmentally friendly than varnish or UV coatings.
What is OPV coating?
The abbreviation “OPV” stands for “overprint varnish.” This term is commonly used in the packaging industry in association with flexible packaging. Overprint varnish lends features to packaging, such as gloss, scratch resistance, temperature resistance or lubrication properties.
What is the difference between UV coating and aqueous?
Aqueous coatings are less glossy than a UV coating and are more resistant to cracking when folded. Aqueous coating can only be applied as a flood, as opposed to UV coatings, which can be applied as either a flood or a spot. This is the least expensive finishing option.
What is an aqueous printer?
Aqueous inks are water-based inks that are safe and easy-to-use in homes, offices, schools, and businesses. Aqueous inks flow easily through the thermal inkjet printheads that can be easily replaced by anyone who uses the printer.
What is aqueous film coating?
Aqueous film coating is applied as a thin polymeric film to the surface of a tablet. Film coating can protect the tablet from light, temperature and moisture; mask undesirable taste or odor; improve the appearance; provide tablet identity; facilitate swallowing and control or modify the release of the drug.
Is inkjet aqueous?
Aqueous is just what its name entails; aqua or water. Water is the highest percentage within the chemistry of this type of ink and is used as a carrier to deliver the inks colorant within a drop. Used in high speed inkjet, wide format, as well as textile printing, aqueous ink gets its color from either dye or pigment.
What is a solvent ink printer?
The term ink solvent refers to the ink containing an oil-based solution. This ink is a relatively inexpensive type of ink that is compatible with inkjet printers. An attribute of solvent inks is that it is waterproof, thus making it resistant to fading and wearing.
Why is sugar coating better than film coating?
Pharmaceutical tablets can be film coated in a single stage process that is rapid and results in minimal weight gain of at 2 – 3% compared with sugar coating which adds 60 to 80%. The film coat does not significantly affect the tablet’s disintegration process.
What is a aqueous printer?
How to choose the right aqueous varnish for your packaging?
If you need your paper packaging seems young and gloss, you need to go with glossy aqueous varnish (AQ coating). If you need them to be luxurious and heavy, select the matt aqueous coating (matt aqueous varnish).
What is a varnish in printing?
A varnish is a coating that can be printed on a press like ink is. You can print the varnish either as a flood, which covers the entire print, or a spot varnish, which allows you to varnish only specific text, images or graphics on your printed piece.
What is the difference between aqueous coating and spot varnish?
Aqueous coating dries quicker than varnishes making it ideal to run inline on the press. You can not create a spot aqueous coating, but in certain instances, you can knock out for a mail panel or a square area for writing. Unlike spot varnishes, aqueous coatings are applied with a blanket and do not use a plate.
What is an inline varnish or aqueous coating?
In offset printing, a varnish or aqueous coating is applied to the press sheet in two different ways. An inline varnish will apply the varnish or coating in the same pass as the printed sheet.