Organic device sealant: FAQs

What are the benefits of MORESCO MOISTURE CUT?
The first benefit is the high water vapor barrier it provides and the second is its high degree of adherence to the base material.
User evaluations show that the barrier performance is approximately double that of other companies' products.
The high barrier properties contribute to the long life of equipment.
Does MORESCO MOISTURE CUT have a track record of sales?
They are used on the production lines of organic EL device manufacturers in Japan, Taiwan, and China.
What hardening method is used for the MORESCO MOISTURE CUT WB90US series? Also, does this series require post-hardening (heat application) after ultraviolet irradiation?
The recommended hardening conditions are as follows: integrated illumination of 6 J/cm2 (365 nm) + 80°C × 1 hour. If you omit post-hardening, hardness will be insufficient, which may lead to a decline in performance.
Do you have a type that does not use ultraviolet irradiation?
As a type that does not use UV, it is a type that cures only with heat. It can be customized according to the user's needs.
I want to use UV-LED as the ultraviolet irradiation equipment for the MORESCO MOISTURE CUT WB90US series. Would that be okay?
We recommend that you use a high-pressure mercury lamp or metal-halide lamp for ultraviolet irradiation.
The ultraviolet rays generated by UV-LED devices have extremely even wavelengths in the vicinity of 365 nm, so if you use one of these devices, you will need to set the integrated illumination higher than the setting for a high-pressure mercury lamp or metal-halide lamp. Failing to do so will result in insufficient hardness.
Up to what size spacers can be added to the sealant?
Spacers generally have a size of 3 to 30 μm, and the maximum size supported is 100 μm. Both glass and resin can be supported as the spacer material.
What are the precautions for storing and handling sealants?
Store the sealant in a cool, dark place (with a temperature between 0 and 15°C). Be sure to return the sealant to room temperature before use. Note that the WB90US series of sealant is classified as a hazardous substance for non-medical use. When disposing of the material, do so by the appropriate method in accordance with the relevant laws, regulations, and ordinances.
What does the package look like? And what about the smallest units?
They are in the form of 10 ml or 50 ml syringes.
The minimum unit is 10 g x 5 or 50 g x 5.