JPH0734071B2 - Eye mirror - Google Patents

Description

Description: TECHNICAL FIELD The present invention provides eyeglasses having an antibacterial effect, such as a plastic pad or frame, particularly a portion that comes into contact with the skin.

BACKGROUND ART Most of plastic frames, pads, moderns, temples, etc. of eyeglasses are formed of cellulose acetate, and recently, a silicon pad in which silicone is composite-formed based on the cellulose acetate is known.
These have been buffed on the surface, or are used as-formed.

Problems to be Solved by the Invention Problems to be solved by the above-mentioned spectacles are yellowing and deterioration of the above-mentioned parts by ultraviolet rays, sweat, hair styling products, cosmetics, contamination by various bacteria, and the like. In particular, the silicone pad is excellent in appearance such as gloss and feel, but it is easy for water to permeate, which tends to cause the yellowing and contamination of various bacteria.

The present invention effectively solves the above problems in eyeglasses.

Means for Solving the Problems Thus, as a means for solving the above problems, the present invention provides a frame or pad or modern or spectacles in which temples are formed of cellulose acetate or cellulose propionate, and the frame or pad or modern or The eyeglasses are formed by coating the surface of the temple with a polyurethane resin paint in which antibacterial agent powder is added.

Action The polyurethane resin coating material is a room temperature curable material, and forms a coating film having the same or better physical properties as the baking coating material on the surface of cellulose acetate or cellulose propionate forming each part of the base eyeglass.

At the same time, the above-mentioned coating containing an antibacterial agent has an antibacterial action against Staphylococcus aureus, Escherichia coli, etc. to effectively prevent contamination and appropriately solve the above-mentioned problems in eyeglasses.

Example The spectacles have, for example, a frame 1, a pad 2, a modern 3, a temple, etc. as plastic molding parts. Cellulose acetate or cellulose propionate in organic acid ester of cellulosic plastic is often used for each of these parts as a suitable material for spectacles.

The frame 1 is a lens frame portion, the pad 2 is a nose pad, the modern piece 3 is an ear pad, and the temple is used as a name when the entire temple including an ear pad is made of plastic.

The surface of each of the portions 1, 2, 3 described above, that is, cellulose acetate or cellulose propionate forming each portion is used as a base material 5, and the surface thereof is subjected to gun spray coating or brush coating with a polyurethane resin paint.

In the figure, 4 indicates a coating layer. As the polyurethane resin coating material, a two-component polyurethane resin coating material containing a curing agent is suitable because of its excellent adhesion to the base material 5.

Acrylic urethane, polyester urethane, polyether urethane, etc. are contained in the polyurethane resin, and polyester urethane was used in this implementation.
The characteristic of the polyurethane resin represented by this polyester urethane is the room temperature curing type.
On the surface of cellulose acetate or cellulose propionate forming 1,2,3, it is possible to obtain a coating layer 4 having a physical property equal to or better than that of a baking paint, that is, a coating layer 4 is produced, and an excellent gloss is also produced in terms of appearance. .

The above-mentioned cellulose acetate or cellulose propionate, which is widely used for each part of eyeglasses such as 1, 2 and 3, easily causes thermal deformation, and thermosetting resins are not suitable.

Polyurethane resin typified by the polyester urethane described above is curable at room temperature and is suitable as a coating paint for a general-purpose resin for the above-mentioned eyeglasses, and also forms a strong coating layer 4 by natural drying. And it is a suitable material that functions effectively in the problems pointed out.

Polyurethane resins typified by the above polyester urethane have excellent elasticity and abrasion resistance, solvent resistance and chemical resistance, and are yellowed and have a great deal of weather resistance.

Furthermore, it has a good feeling of flesh, has a non-slip hardening, and is highly suitable as a material for each part of the above-mentioned spectacles.

In the present invention, an antibacterial agent is further added to the polyurethane resin coating material and applied to the surfaces of the respective portions 1, 2 and 3 to form the coating layer 4.

Unlike the bactericide, the above-mentioned antibacterial agent is a known agent that suppresses the growth of various bacteria (microorganisms) attached to the skin and hair. The antibacterial agents include phenols, halogenated bisphenols, amides, etc. Of these, the phenols are safe and most effective.

It has already been proved that the above-mentioned phenolic antibacterial agent is odorless and highly safe, does not cause irritation at a concentration of 5% or less when applied to human skin, and has no adverse effect when applied again. .

The above-mentioned antibacterial agent powder is dissolved in acetone, and this is added to the above-mentioned two-component polyurethane resin paint in an amount of about 0.5%, for example, about 0.2% to 1% (weight ratio), and the plastic frame 1 and the pad of the spectacles are added. 2, the same modern 3, all the selected parts of the same temple or a selected part, for example, the most effective part is applied to the surface of the pad 2, and natural drying is promoted at room temperature to form the coating layer 4.

In the antibacterial activity test in which E. coli or Staphylococcus aureus was inoculated on the surface of the coating layer 4 based on the above-mentioned Examples and the culture conditions were given, it was found that the above-mentioned growth suppressing effect was extremely remarkable.

EFFECTS OF THE INVENTION According to the present invention, the frame of the eyeglass, the pad, the modern, imparts an antibacterial effect to the temple, effectively prevents contamination of various bacteria such as Escherichia coli and Staphylococcus aureus, which have been conventionally problems, and It is possible to effectively prevent the generation of mold in each part, and the resulting discoloration and off-flavor.

In addition, the polyurethane resin coating can form a strong coating layer equivalent to the baking coating on the surface of cellulose acetate or cellulose propionate forming each part of the above-mentioned eyeglasses, and the coating layer can be maintained soundly to provide the antibacterial effect. Has an advantage that it can be effectively exerted over a long period of time and the appearance is also kept good.

[Brief description of drawings]

FIG. 1 is a perspective view of eyeglasses showing an embodiment of the present invention, and FIG. 2 is a sectional view of a portion such as a pad portion to which coating is applied. 1 ... Eyeglass frame, 2 ... Pad, 3 ... Modern, 4
... coating layer, 5 ... base material.

Claims (1)

[Claims] 1. A spectacle in which a frame, pad, modern or temple is made of cellulose acetate or cellulose propionate, and a coating with a polyurethane resin paint in which a powdered antibacterial agent is added to the surface of the frame, pad, modern or temple. Eyeglasses characterized by having been applied.