Applicator product
This applicator product, in a section thereof for guiding an adhesive B from a container body 1 towards a top portion 64 and including at least the top portion 64 , is furnished with a see-through passage 6 a of translucent constitution such that the adhesive B is visible from the outside, whereby it is possible to apply a desired quantity of the adhesive B to an object, and to do so over a desired location and surface area. A cap 7 covers a nozzle 6 , maintaining the adhesive B constituting the application material within the see-through passage 6 a in a state of being shielded from visible light, so that the adhesive B retains stable coloration.
1. An applicator product comprising:
an application material to which a photochromic compound that develops a color by irradiation of ultraviolet light with a certain wavelength and is decolorized by irradiation of light under natural conditions is added so that the application material transits from colored state to decolorized state when it is irradiated with the light under natural conditions;
a container body that contains the application material in the colored state and shields the application material from visible light;
a see-through nozzle that has a top portion projecting from the container body to apply the application material to an object, and a see-through passage provided in at least a part including the top portion to guide the application material from the container body to the top portion, the see-through passage being transparent or translucent so that the application material is visible from outside; and
a light-shielding cap being attached to the container body or the see-through nozzle to shield the application material in the see-through passage from visible light.
2. The applicator product according to claim 1 , wherein
the photochromic compound comprises a diarylethene-based photochromic compound.
3. The applicator product according to claim 2 , wherein
the application material is a liquid adhesive,
the adhesive includes cyanoacrylate.
4. The applicator product according to claim 1 , wherein
the application material includes the photochromic compound added by 0.005 to 5.0 wt % based on a base substance.
5. The applicator product according to claim 1 , wherein
the see-through nozzle is integrally formed of a translucent resin.
6. The applicator product for adhesive according to claim 5 , wherein
the top portion is formed to be thin.
7. The applicator product according to claim 1 , wherein
the top portion has a top end face that is slanted relative to the longitudinal direction.
8. The applicator product according to claim 1 , wherein
the application material comprises a liquid adhesive.
9. The applicator product according to claim 8 , wherein
the adhesive includes cyanoacrylate.
10. The applicator product according to claim 9 , wherein
the application material exhibits red in the colored state.
11. The applicator product according to claim 1 , wherein
the application material includes an ultraviolet absorber.
12. The applicator product according to claim 1 , wherein
the application material exhibits red in the colored state.