JPH08655Y2 - Parts for eyeglass frames - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to an eyeglass frame having antibacterial properties.

[Conventional technology]

Heretofore, the temple portion and the pad portion of the spectacle frame are mainly made of a metal material such as titanium alloy or a plastic material such as acetate resin. However, when wearing the temple part and the pad part of the eyeglass frame,
It has a drawback in that it has a poor feel and fit to the skin, may cause pain on the skin, may be injured or rash in some cases, and may easily slip due to sweat. As a method for solving this problem, for example, JP-A-56-144413, JP-A-55-12220,
Also, Japanese Utility Model Publication No. 55-125614 discloses an eyeglass frame in which the temple portion and / or the pad portion of the eyeglass frame is composed of or covered with silicone rubber.

[Problems to be solved by the device]

However, JP-A-56-144413 and JP-A-55-12
The spectacle frame disclosed in JP 220 and JP 55-125614 is effective for fitting with respect to skin contact, etc., but dirt and the like generated from sweat and secretions adhering to the pad. Regarding the above, the measures were unresolved. And since the dirt is likely to become a breeding source of various bacteria including Staphylococcus aureus which is a resident bacteria of the skin,
The spectacle frame not only causes physiological discomfort, but also has a problem of being unsanitary.

Therefore, it is possible to use it in combination with a bactericidal agent or an antibacterial agent, but there are problems such as the method of sustaining the antibacterial effect and the effect on the skin. It was

The present invention has been made to solve the above-mentioned problems, and its purpose is to have a good feel and fit to the skin, and to use as a source of contamination such as sweat and secretions attached to the temple part and the pad part. It is intended to provide a frame for eyeglasses having an antibacterial action against growing bacteria.

[Means for solving the problem]

The present invention has been made in order to achieve the above-mentioned object, and an antibacterial zeolite-containing silicone composition is provided in a molding die cavity formed so as to be able to cover the shape of the main body of the temple portion or the pad portion of the eyeglass frame. An eyeglass frame part, characterized in that the temple body part or the pad body part is coated with an antibacterial zeolite-containing silicone-based coated part obtained by filling and curing an object.

As the silicone rubber used in the present invention, various conventionally known silicone rubbers are used, and examples thereof include heat-curing type, low-temperature curing type, and room-temperature curing type. The organic groups of diorganopolysiloxane, which is one of the constituents of silicone rubber, include methyl groups, ethyl groups, propyl groups, and other alkyl groups, as well as phenyl groups, γ-trifluoropropyl groups, and vinyl groups. A group into which a group or the like is introduced is used.

Examples of the composition for obtaining such silicone rubber include (I) general formula (Wherein R represents a monovalent hydrocarbon group, and n represents a positive integer), a diorganopolysiloxane endblocked by hydroxyl groups at both molecular chains, a trifunctional alkoxysilane or siloxane, and a metal salt of an organic acid. Composition.

(II) Average composition formula (Here, R'represents a monovalent hydrocarbon group, and n'is
1.98 to 2.02) and a composition comprising a diorganopolysiloxane represented by the formula (1) and an organic peroxide (further, a mixture of a high molecular weight silicone having a vinyl group and a low molecular weight silicone having a vinyl group as the silicone in the composition) Made using).

(III) Average composition formula (Wherein R ″ and n ″ have the same meaning as R ′ and n ′ above), and is an organopolysiloxane having at least two alkenyl groups directly bonded to a silicon atom in one molecule.

(IV) Average composition formula (Here, R ″ has the same meaning as described above, p is 1 to 2,
q represents 0.2 to 1.2. However, p + q is 1.8 to 3.0)
The composition comprising an organohydrogenpolysiloxane having at least two hydrogen atoms directly bonded to a silicon atom in one molecule and platinum or a platinum compound.

(V) in the composition of the (I) ~ (IV), a softening point of 220 ° C. or higher and a fineness of at least 1 denier, the polyester fibers of length 1 to 5 mm, the general formula _{(R), (CH 3)} b SiX _4-ab ) (wherein R is a monovalent organic group having an unsaturated bond, X is a halogen atom or a hydrolyzable monovalent group selected from an alkoxy group and an acyloxy group, and a is 1 or 2, b is 0, 1 or 2, and a + b ≦ 3.) Mechanical strength, particularly tear strength, obtained by adding and mixing a filler obtained by treating with a silane or a partial hydrolysis-condensation product thereof. A high strength silicone rubber composition,
And so on.

It should be noted that, if necessary, various additives that have been conventionally blended with the silicone rubber composition may be blended into each of the silicone rubber compositions described above, and this may include fine powder silica, silica airgel, and diatomite. Soil, quartz powder,
Examples thereof include fillers such as iron oxide, zinc oxide, titanium oxide and carbon black, pigments, dyes, antiaging agents and antistatic agents.

As the antibacterial zeolite in the present invention, zeolite to which antibacterial metal ions such as silver ions, copper ions and zinc ions are added is used. Zeolite is an aluminosilicate and is xM2 / n0 · Al ₂ O ₃ · ySiO ₂ · zH ₂ O (M represents an ion-exchangeable metal ion, usually a monovalent to divalent metal, and n is Corresponds to this valence, while x and y
Are metal oxides and silica coefficients, and z is water of crystallization. ).

The amount of the antibacterial zeolite used depends on the type of the antibacterial zeolite, the composition of the silicone rubber, the content, and the method of attachment. For example, when mixed with a two-component type silicone rubber, the substantial antibacterial activity is In order to exert the effect, it is preferable to add 0.01% by weight or more to the two-component silicone rubber.

The spectacle frame according to the present invention is not limited to a structure in which only the contact portion of the temple portion and the pad portion with the wearer contains the antibacterial zeolite in the silicone rubber, and the entire temple portion and the pad portion are made of the silicone rubber. It may have a structure containing an antibacterial zeolite. Further, as a method of operating the pad portion of the spectacle frame according to the present invention, a method prepared by mixing antibacterial zeolite with a silicone rubber composition, and a pad portion and a temple portion made of silicone rubber containing antibacterial zeolite are used. Examples of the method include coating.

[Action]

It has an antibacterial effect due to the antibacterial zeolite contained in the silicone rubber. Further, even if the silicone rubber contains antibacterial zeolite, the good feel and fit to the skin, which is the characteristic of the silicone rubber, is not impaired.

〔Example〕

Hereinafter, the present invention will be described in detail with reference to Examples.
The invention is not limited to these examples.

FIG. 1 is a frame 1 for metallic spectacles containing an antibacterial zeolite of the example.

The spectacle frame 1 includes a lens frame 2, a front portion 5 including a bridge 3 and a pad portion 4 and a temple portion 6, and the front portion 5 and the temple portion 6 are connected via a hinge portion 7.

The parts of the pad part 4 and the temple part 6 that come into contact with the wearer are made of silicone rubber containing antibacterial zeolite.

The pad portion 4 and the temple portion 6 coated with silicone rubber containing antibacterial zeolite will be described below.

(1) Pad part 90 parts by weight of KE 106 LTV (Shin-Etsu Chemical Co., Ltd.) as a silicone rubber composition, 9 parts by weight of Catalyst RG (Shin-Etsu Chemical Co., Ltd.) as a catalyst, antibacterial Soluble Alumina Sodium Silicate with Copper Ion 1
Parts by weight were mixed and stirred. Next, as shown in FIGS. 2 and 3, a cellulose propionate pad core 8 having a mounting bracket 9 embedded therein is used, and the protrusion of the mounting bracket 9 of the pad core 8 is used.
9a was inserted into the small hole portion 11 provided in the lower die 10b of the eyeglass pad-forming die 10 to form the eyeglass pad-forming die cavity 12. After filling the cavity 12 with the silicone composition containing the antibacterial zeolite, the upper mold 10
The a and the lower die 10b were fixed by pressure contact. Then, the pressure-fixed mold was placed between two hot plates of a press set at 180 ° C., and the antibacterial zeolite-containing silicone rubber was heat-cured under the condition of 180 ° C. for 10 minutes. Next, after cooling the eyeglass pad forming mold 10, the molded product was taken out.

The obtained pad portion 4 made of silicone rubber containing antibacterial zeolite had a pad core 8 made of cellulose propionate coated with silicone rubber 13 containing antibacterial zeolite as shown in FIG.

Next, using the bacterial count method adopted by the Textile Products Sanitation Council, Staphylococcus aureus was colonized in a clean atmosphere at a temperature of 30 ° C and a temperature of 70% with a colony number of 5.0 x 10 ⁴ cells / cm ² , Bacillus subtilis A colony number of 3.4 × 10 ⁴ cells / cm ² was adhered to each of the above pad parts to determine the bacterial reduction rate after 6 hours.

As a result, excellent antibacterial properties were observed, with the bacterial reduction rates of Staphylococcus aureus and Bacillus subtilis in the pad portion being 93% and 85%, respectively.

(2) Temple part 90 parts by weight of KE 106 LTV (Shin-Etsu Chemical Co., Ltd.) as a silicone rubber composition, 9 parts by weight of Catalyst RG (Shin-Etsu Chemical Co., Ltd.) as a catalyst, antibacterial zeolite 1 part by weight of silver ion-containing sodium aluminate silicate was mixed and stirred. Next, as shown in FIG. 4, the cavity 15 of the tube molding die 14 was filled with the above-mentioned mixed composition. Next, the mold 14a and the lower mold 14b are fixed by press contact, and the press fixed mold is put between two hot plates of a press set at 180 ° C, and the condition is kept at 180 ° C for 10 minutes. The silicone rubber composition containing antibacterial zeolite was heat-cured.
After curing, the molding die was cooled and the molded product was taken out.

The obtained tube 16 made of silicone rubber containing antibacterial zeolite was attached to the temple portion main body 20 of the spectacle frame as shown in FIG. 5 to form the temple portion 6. FIG. 6 is a diagram showing a mixed state of zeolite in the temple portion 6. In FIG. 5, reference numeral 17 is a temple core metal, reference numeral 20 is a temple body, reference numeral 16 is a silicone tube, and reference numeral 18 is zeolite.

Next, using the bacterial count method adopted by the Textile Products Sanitation Council, the number of Staphylococcus aureus colonies was 5.0 × 10 ⁴ / cm ² in a clean atmosphere with a temperature of 30 ° C and a humidity of 70%. A colony number of 3.4 × 10 ⁴ cells / cm ² was adhered to each of the temple parts to determine the bacterial reduction rate after 6 hours.

As a result, excellent antibacterial properties were recognized, with the bacterial reduction rates of Staphylococcus aureus and Bacillus subtilis of the above-mentioned temple portion being 93% and 85%, respectively. Furthermore, when the above-mentioned spectacle frame was worn, the good feel and fit to the skin, which are the characteristics of silicone rubber, were not impaired.

[Effect of device]

As described above, the spectacle frame of the present invention is easy to adhere to the portion of the pad portion and the temple portion that comes into contact with the wearer without impairing the good feel and fit to the skin, which is the characteristic of the silicone rubber, It has an antibacterial action against miscellaneous bacteria that grow from dirt of secretions as a generation source. Therefore, it is possible to provide a clean eyeglass frame.

[Brief description of drawings]

FIG. 1 is a perspective view of an eyeglass frame according to the present invention. FIG. 2 is a cross-sectional view showing a state in which a mounting bracket is arranged in a cavity of a molding die as one embodiment for manufacturing the spectacle pad according to the present invention. FIG. 3 is a cross-sectional view of the spectacle pad according to the present invention obtained by the method shown in FIG. FIG. 4 is a cross-sectional view of a molding die for producing a silicone rubber tube containing antibacterial zeolite. FIG. 5 is a view showing a state in which the surface of the temple portion is coated with silicone rubber containing antibacterial zeolite. FIG. 6 is a sectional view of the temple portion of FIG. 5 taken along line XX ′. DESCRIPTION OF SYMBOLS 1 ... Frame for glasses, 2 ... Lens frame, 3 ... Bridge, 4
... Pat section, 5 ... Front section, 6 ... Temple section, 7 ... Hinge section, 8 ... Cellulose propionate pad core, 9 ...
Mounting metal fitting, 9a ... Projection of mounting metal fitting, 10 ... Metal mold for forming pat for glasses, 10a ... Upper metal mold, 10b ... Lower metal mold, 11 ... Small hole part of lower metal mold, 12, 15 ... Cavity, 13 ... Silicone rubber containing antibacterial zeolite, 14 ... Tube forming mold, 14a ... Upper mold, 14b ... Lower mold, 16 ... Silicone tube containing antibacterial zeolite, 17 ... Temple core metal, 18 ... Antibacterial zeolite

Claims (1)

[Scope of utility model registration request] 1. An antibacterial zeolite-containing silicone composition is filled in a molding die cavity formed so as to be able to cover the shape of the main body of a temple portion or a pad portion of an eyeglass frame, and is obtained by curing. An eyeglass frame part, characterized in that the temple body part or the pad body part is coated with the antibacterial zeolite-containing silicone coated part.