Hydrochromic inks are
used to produce prints or coatings which change colour when exposed to water
. There are four different types; Solvent Based Hydrochromic Flexo Ink. The ink dries to a coloured film. The strong colour and opacity disappears on contact with water.
What is Hydrochromic Ink How does it work?
How does it work? This is a
water based screen ink which dries to give a white opaque print
. When wet the ink film takes up water and becomes transparent allowing any print beneath to become visible. If the water dries out the opacity returns and the ink becomes white again.
What can Hydrochromic inks be used for?
Hydrochromic inks change colour (become transparent)
when wet or if moisture is present
. Apply these inks over the surface or material you want to hide- so when wet, all will be revealed! This product is often used to bring out the colours of text or an image- if for example, the original was black and white.
What is Hydrochromic paint?
This paint can be applied as standard paint and appears
semi transparent
. Once dry, the paint appears as a solid white colour; but when water is applied to the surface the paint becomes transparent to reveal whatever is behind. Once dried again, the paint returns to the solid white colour.
What are Hydrochromic materials?
Hydrochromic materials
change color in contact with water
. Depending on their properties, they can turn transparent or change their color when they get wet. They can be integrated into fabric, clothing and paper.
How do you use Hydrochromic ink?
Hydrochromic Ink is white when dry and translucent when wet. Once the ink dries it returns to white. Ideal for obscuring messages, colours and text.
Apply 2 thin coats by screen printing or using a flat foam roller
.
How is thermochromic ink made?
Thermochromic inks or dyes are temperature sensitive compounds that temporarily change colour with exposure to heat. They come in two forms,
liquid crystals and leuco dyes
. ... The slurry or concentrate is then usually finished into its final form of an Ink, a Label, Plastic masterbatch or a component.
What is thermochromic pigment powder?
Our color changing (thermochromic) pigments are high quality products offering with
different activation temperatures for color
to colorless (translucent white) or color to color transition. The thermochromic pigments are stable under normal conditions with long lasting thermochromic effect.
How do you use photochromic pigments?
Photochromic pigment and powder changes
colour in the sun and under certain levels of UV exposure
. The product turns from an almost colourless powder into vibrant colours if it is exposed to the ultraviolet rays. Once the direct UV source is removed from the product, it reverses back to colourless again.
Where is Hydrochromic used?
Hydrochromic pigments are used
widely on umbrellas whose fabric is brightly printed and then coated
. When they get wet, these umbrellas appear to undergo a rapid visual change that reverses on drying out.
Is thermochromic paint toxic?
The thermochromic pigments and our water-based paints and inks are
NON-toxic products
conform to ASTM 4236 standard. However, we recommend you to follow the general rules for personal protection – wear latex gloves and protective glasses. The thermochromic products should not be ingested!
What are smart materials?
Smart materials are materials that
have properties which change reversibly
, ie can change easily but can then easily change back, depending on changes in their surroundings.
What is a smart material used for?
Smart materials, also called intelligent or responsive materials, are designed materials that
have one or more properties that can be significantly changed in a controlled fashion by external stimuli
, such as stress, moisture, electric or magnetic fields, light, temperature, pH, or chemical compounds.
What are the disadvantages of thermochromic inks?
The main pitfalls too often encountered are the
sensitivity to ultraviolet
, the low coloring power, the limited thermal resistance (200-240 ° C), the loss of properties during the formulation and / or the industrial process, the toxicity of certain elements components ...
Why is thermochromic ink used?
Thermochromic Leuco dyes are used in
manufacturing and process control, quality control, safety warnings, advertising, consumer packaging, product labels
, security printing, anti-counterfeit inks, novelty applications such as temperature sensitive plastics and inks printed onto ceramic mugs, promotional items, toys and ...
What causes Thermochromism?
Thermochromism refers to the dramatic reversible color change that occurs
when a material is melted or dissolved in a solvent
.
