Luminova Phosphorescent ink

Application

• Glow in the dark sign, emergency sign (emergency exit, emergency stairs, emergency kit, etc.), decorations, etc.
• Clock-face

Features, Function

• Compatible with various types of UV and Solvent type screen inks by color matching.
• Significantly longer afterglow time than phosphorescent ink and contains no radioactive substances

Dilution

• 5 to 10% (Please refer to the solvent listed in the catalog for each ink type)

• *Stir well before every use, as phosphorescent pigments have a tendency to settle.

Mesh

• Lower than 150 mesh（Coverage is about 2 to 3 m²/kg with triple print at 100 mesh）

• *Maximum afterglow brightness is achieved at ink layer thickness of 400μm.
• *Select the mesh and emulsion thickness so that the ink layer thickness is at least 100-150 µm.
• *Triple print using 100 mesh stencil can produce ink layer thickness of about 150 to 200µm.

Drying, Curing

• According to each ink type.

Caution

• This product has tendency to precipitate due to high specific gravity of the pigments.
• Stirring ink every week or two will prevent precipitation.
• Ink shelf life: 3 months from production date, unopened.

Safety

• Please refer to respective ink catalog for transportation information.

Handling

• For flammability and flash point, please refer to the product catalog for each ink used.
• Use safety gloves and eyeglasses to protect skin and eyes. If the ink comes in contact with skin, wash with soap and plenty of water (or lukewarm water) and consult with a doctor.
• Containers should be closed tightly after use and stored in a cool and dark place.
• SDS is available upon request. Please request a copy and read it carefully before handling the products.

Resistance

Test item	Test Conditions	VK-N Luminova	UV FIL-N Luminova
Adhesion	JIS K 5600-5-6:ISO2409（cross-cut）1mm interval 6×6, cellophane tape peel	0 (no peel)	0 (no peel)
Heat	80℃ 72 hrs. check appearance and peel off	No defect	No defect
Alcohol	Gakushin scrub tester, cotton soaked ethyl alcohol, weight 500g, check peel off	(250 back and forth) No defect	(500 or more back and forth) No defect
Water	JIS K 5600-6-2 ,ISO 2812-2, Soak 24 hrs. in 40℃ tap water, check appearance and peel off	No defect No defect＊1	Abnormality No defect＊2
Oil	Soak 30 min in motor oil	No defect	No defect
Detergent	Soak 1 hr. in neutral detergent, check appearance	No defect	No defect
Abrasion	JIS K5600-5-9　ISO7784-2（Abrasion ring method）, weight 500g, CS17 ring, number of times when substrate is exposed in abrasion ring	120 times	500 times or more
Bending	JIS K 5600-5-1 ISO 1519 (Cylindrical Mandrel), 2mmΦ, check cracks	No defect	No defect
Punching	Punching by press machine, JIS K 5600-7-5 ISO 2809 Irradiance 100W/m2　BP Temp. 63±3℃, check color fade and peel off	No defect	No defect
Light fastness	JIS K 5600-7-5 ISO 2809　Irradiance　100W/m2 BP Temp.63±3℃, check color fade and peel off	(500 hrs.) No defect (500 hrs.) No defect＊1	(500 hrs.) No defect (500 hrs.) No defect＊2
Accelerated Weathering	JIS K 5600-7-7 ISO 11341　Irradiance 60W/m2,  BP Temp.63±3℃ Raining rate: 18 min/120 min、1000 hrs.,Check color fade and peel off	(200 hrs.) Abnormality (500 hrs.) No defect＊1	(200 hrs.) Abnormality (500 hrs.) No defect＊2

• Remarks*1：SP-3100AU CLEAR (OVERCOAT) is printed once.
• Remarks*2：UV FIL-393 CLEAR (OVERCOAT) is printed once.
• Test Conditions
  【SVC sticker】　【VK type: 60℃　20 min】 【UV FIL type:80W/cm, two metal halide lamps, 10m/min】 【Various resistance tests are conducted on printed materials left for 48 hrs. after printing】

The following graph shows the relationship between the ink layer thickness and afterglow brightness. (VK Luminova ink was excited by 400 lux for 20 minutes)

• *Above resistance test results are measured results in our laboratory and they are not guaranteed values.
• *Information contained in this catalog may change without prior notice.