Product overview

POS ink is a 2 pack type urethane based screen ink and provides printed ink layer with superior adhesion to a wide range of materials such as treated polyethylene, treated polypropylene, painted metal plates, PC, and PVC.

  • Solvent type ink

Application

  • Membrane, Metal membrane

  • Automobile, Motorcycle

  • Home Appliance (IoT)

  • Smartphone, Tablet, Smart watch

  • Sensor

  • Game

  • Others

Features, Function

  • Superior printability providing sharp images
  • Excellent adhesion to a wide range of materials
  • Superior weather, chemical, and solvent resistance
  • Multi color setting

Substrate

  • Treated PP/PE, Aluminum, Glass, Painted metal plates, PC, PET, ABS, Paper
  • PC
  • PET
  • Glass
  • PP
  • PE
  • Metal
  • Paper
  • ABS
  • Aluminum

Dilution

  • P-001 SOLVENT (fast) 　P-002 SOLVENT (standard) 　P-003 SOLVENT (slow) P-004 SOLVENT (extra slow)
  • Dilution : 15 to 25%
  • P-002 SOLVENT when drying property is important for solid print backing, etc., P-003 SOLVENT when solid and lines are mixed in print and P-004 SOLVENT when printing fine lines, etc.
  • *Do not use other solvents as they may adversely affect curing, adhesion, stencil stability, or other properties.

Catalyst, Promoter mixing

  • POS MEDIUM : 210 CATALYST 8% Pot Life 8 hrs.
  • POS Color Ink (all colors) :210 CATALYST 6% Pot Life 8 hrs.
  • *The ink will turn to gel after the pot life has expired. Be sure to mix only enough to use

Promoter

  • SM-40 DEFOAMER 2%（For anti-foam and improvement in leveling）

Recommended cleaner

  • Screen Cleaner L2 or P-002 SOLVENT

Mesh

  • T 150 to 300 mesh（Coverage would be about 20 to 25m2/kg at 250 mesh）

Drying

  • Each layer 60℃　60 min
    Final layer 60℃　60 min or 80℃　30 min

Standard colors

  • 000 MEDIUM

  • 121 SCARLET

  • 160 SCARLET

  • 177 OPAQUE RED

  • 182 RED

  • 221 YELLOW

  • 263 REDDISH YELLOW

  • 271 OPAQUE LIGHT YELLOW

  • 277 OPAQUE REDDISH YELLOW

  • 391 BLUE

  • 525 ORANGE

  • 577 OPAQUE ORANGE

  • 581 MAGENTA

  • 611 WHITE

  • 611C OPAQUE WHITE

  • 797 GREEN

  • 821 VIOLET

  • 911 BLACK

Introduction of
Color Guide

Caution

  • Adhesion test must be done before printing as quality of plastic may differ depending on manufacturers or lots. It is also recommended to wipe surface of the printing part with alcohol or mineral spirits to prevent defective print due to static electricity and insufficient adhesion due to plasticizer and additive floating.
  • Checking before production: Adhesion and resistance properties may change due to differences in substrates, processes, printing and drying conditions. Be sure to check the adhesiveness and resistance properties before mass production printing.
  • Ink shelf life: 24 months from production date, unopened.

Safety

  • UN No.: 1210
  • UN Classification: Class 3 Flammable Liquids（Flash point is over 23 Degree C）

Handling

  • 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 Test results
Adhesion JIS K 5600-5-6:ISO2409（cross-cut）, 1mm interval 6×6, cellophane tape and peel 0（no peel）
Pencil Hardness JIS K 5600-5-4:ISO 15184（pencil）,Weight 750g, hardness of the pencil which does not make scar HB
Heat 80℃ 24 hrs., check appearance and peel off No defect
Liquids JIS K 5600-6-2 ISO 2812-2　240 hrs. in tap water, check appearance and peel off from the substrate No defect
Alcohol Gakushin scrub tester, cotton soaked ethanol, weight 500g, 100 back and forth, check peel off from the substrate. Slightly whitened
Oil Soak 24 hrs. in engine oil, check appearance No defect
Solvent Gakushin scrub tester, cotton, weight 500g, 30 back and forth, check peel off Slightly whitened
Scrub Gakushin scrub tester, cotton, weight 500g, 500 back and forth, check color fade No defect
Accelerated Weathering JIS K 5600-7-7 ISO 11341　 Radiant energy 60W/m2、BP temp. 63±3℃ raining rate 18 min/120 min, 1000 hrs, check color fade No defect

Test Condition

  • Test condition 【POS-911 BLACK】　【P-002 SOLVENT 20%】 【80℃ 15 min】 【T 250】 　　 【Substrate: 0.5 mm Polycarbonate】
  • Above test was conducted after leaving above printed materials for 168 hours at a room temperature.
  • Accelerated weathering: as weather resistance may vary depending on the standard color, Please refer to the weather resistance data for each color.
  • 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.

FAQ

What is screen printing?

Screen printing is a type of stencil printing which uses a technique of duplicating the image from a design made on mesh stencils.

When printing ink goes through the mesh, it transfers the image onto the substrate material. Other than air and water, any substrate materials are printable. Not only flat surfaces, but also curved, specially shaped, and molded products are suitable for screen printing.

When over-printed with a black ink, we often have pinholes. How can we eliminate the pinholes?

See the list below for causes of pinholes:

1. The first layer is too thin (less than 5 µ)
2. Too much dilution of the ink (more than 20%)
3. Too much squeegee pressure
4. Under layer is pale colored, such as a medium based color
5. Any combination of these causes

What are the standard drying conditions?

In multi-color printing, primary drying would be done after each color is printed. After the final color is printed, the final drying should be done according to the conditions listed in the catalog. If the color printed ink is a “two-pot” ink the final drying should be done after the printing of the Binder.

Why there is “Primary” drying and “Final” drying?

Residual solvent at the time of injection may cause ink flow and insufficient adhesion. To prevent these malfunctions, residual solvent must be evaporated through a “Final” drying process.

When we extended the primary drying time, pinholes and cracks resulted. How can we eliminate them?

With one-pot inks, if the primary drying time is too long, the solvent of second ink penetrates the first color layer and makes pinholes.

With two-pot inks, if the primary drying time is too long, a curing process occurs. Thus when the second color is printed, the first color ink layer wrinkles and looks like cracks. The countermeasure in either case would be to shorten the primary drying time.

What is non-conductive black ink?

Non-Conductive Black Ink is an ink that has a high electrical resistance of the printed ink layer, and has both a function that is difficult for electricity to pass through and a high opaque black color. The high electrical resistance (low conductivity) prevents malfunctions and failures of electronic components, etc., caused by electric current flowing through the printed ink layer. Furthermore, its high opacity makes it suitable for printing on flat panels and smartphone displays that require light-shielding properties.

Related Link
Introduction of Functional Black Ink

FAQ

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