JP3047357B2 - Glass bottle container for cosmetics containing kojic acid and method for producing the same - Google Patents

Description

The present invention relates to a kojic acid-containing cosmetic glass bottle container and a method for producing the same, and particularly stores cosmetics containing kojic acid which is liable to be deteriorated by ultraviolet rays or alkalis. And a method of manufacturing the same.

[Conventional technology]

Conventionally, glass containers containing cosmetics, pharmaceuticals, and the like are subjected to a matte treatment or the like to enhance the decorativeness and design of the appearance, and to prevent deterioration due to UV rays depending on the contents to be stored. It is required to block this. In these glass containers, cerium,
A method of adding a metal oxide such as chromium or an inorganic substance, melting at a high temperature to form a colored glass, and thereby forming a bottle,
A method of applying an inorganic or resin paint mixed with a matting agent and a coloring agent on the surface of a glass bottle to form a film having an ultraviolet blocking property has been performed.
Glass products having a decorative surface of an ultraviolet curable paint or an electron beam curable paint containing an ultraviolet absorber or the like on the outer surface of the glass container body such as No. 6249, and a method for producing the same,
Further, as disclosed in JP-A-61-190433, a glossy film having a UV-blocking property is obtained by forming a cured film of a composition containing a photocurable resin, a photopolymerization initiator, an ultraviolet absorber and a matting agent on the surface of a glass bottle. As described in Japanese Unexamined Patent Publication (Kokai) No. 63-129038, there has been proposed a method for producing a thermosetting or two-pack reaction type paint containing an ultraviolet absorber to block ultraviolet rays.

[Problems to be solved by the invention]

However, the above method has the following problems. The first point is that in the past, cosmetics and pharmaceuticals put in glass bottle containers have the effect of blocking ultraviolet rays by simply applying an inorganic or resin paint mixed with a matting agent and a coloring agent. A method of forming a coating having ultraviolet shielding properties on the surface of a glass container as described above has been proposed.Cosmetics containing a bio-related substance or an enzyme active ingredient, pharmaceuticals, etc., for example, in the case of kojic acid-containing cosmetics Influenced by ultraviolet light, or alkali eluted from the inner surface of the glass bottle, it is also a factor that promotes deterioration and decomposition, and is easily deteriorated by such ultraviolet light, and is inferior in alkali resistance to cosmetics and pharmaceuticals. Quality deterioration due to securing and alkali elution,
Deterioration prevention is an issue. Also, the second point is that when a conventional coating film having a UV-blocking property or UV-absorbing ability is formed on the glass surface, a necessary UV-blocking property is required, and a complicated curved surface is formed after the glass bottle is formed. However, there is a disadvantage that it is difficult to ensure uniformity of the coating film thickness because the coating is applied. For this reason, even if the coating is applied, there is unevenness in the coating state, and therefore, in a glass bottle container for storing and filling kojic acid-containing cosmetics, which is particularly susceptible to ultraviolet rays, coloring under light, heat, or an alkaline region may occur. There are problems such as remarkable destruction of components of the contents, deterioration, etc., and the coating layer of the outer surface layer of the glass bottle container, together with securing a film thickness range having ultraviolet shielding properties, the It has been desired to suppress the range of the amount of elution eluted on the inner surface.

The present invention effectively solves such problems and difficulties of the conventional technology, and among the so-called bio-related components in recent years, among the so-called bio-related components and the like, is used for storing cosmetics containing kojic acid in which severe conditions are desired for preservation of products. It is an object of the present invention to provide a suitable glass bottle container and a method for producing the same. Also,
A second object of the present invention is to provide a glass bottle container having such a function of shielding ultraviolet rays and preventing alkali elution in a stable and industrially advantageous manner.

[Means for solving the problem]

The present invention relates to a glass bottle container for accommodating cosmetics containing kojic acid, wherein the inside of the container is formed by blow molding of a glass bottle, and then ammonium sulfate is used in a general test method of Japanese Pharmacopoeia (11th revision) The test result based on the dissolution test method 2 (surface method) was 20 ml
A glass surface layer that has been subjected to a dealkalization surface treatment with an alkali elution amount of 0.03 ml per unit and a coating composition such as a thermosetting type, a two-part reaction type, or an ultraviolet curing type on the outside of the container, Coating thickness range 10 ~
70μ, UV absorption capacity at least 380nm wavelength range 8
A method for producing a glass bottle container for kojic acid-containing cosmetics, characterized by being formed with a coating film layer of 0% or more, and a glass bottle container containing cosmetics containing kojic acid,
After blow-molding of the container, before entering the cooling furnace, 500-600 ° C
Using ammonium sulfate at a high temperature of 0.03 ml per 20 ml of the container at a consumption of 0.02 normal sulfuric acid, based on the alkaline elution test, 2nd method (surface method) in the general test method of Japanese Pharmacopoeia (11th revision) using ammonium sulfate The surface of the container is subjected to a dealkalization surface treatment with an alkali elution amount of, and then a thermosetting, two-pack reaction type, or ultraviolet curing type paint containing an ultraviolet absorber and a matting agent, a coloring agent, etc. The composition is to form a coating layer having a coating thickness range of 10 to 70 μ on the outer surface of the container by a disk-type electrostatic coating method and having a UV absorbing ability of at least 80% in a wavelength range of at least 380 nm. The present invention relates to a method for producing a glass bottle container for cosmetics containing kojic acid.

As the ultraviolet absorber used in the present invention, 2-
[-2hydroxy-3,5-di (2,2-dimethylbenzine)
Phenyl) -2H benzotriazole, 2- (2'-hydroxy3 ', 5'-di-tert-amylphenyl) benzotriazole, and other benzotriazoles, or benzophenones, acrylates, and salicylates. And dibenzoylmethane. From the viewpoint of high-temperature volatility, those having relatively low volatility are preferred.

Since these ultraviolet absorbers have relatively poor dissolving and dispersing properties, they can be uniformly dispersed in a paint by being dissolved in an organic solvent such as xylene and then mixed with the paint. Further, the mixing ratio of the ultraviolet absorber must be at least 0.5% or more based on the dry solid content of the paint, and is preferably in the range of 1 to 10%. It can be appropriately selected depending on physical properties such as easy susceptibility and poor alkali resistance.

The coating material used in the present invention includes, for example, a thermosetting type such as an acrylic resin type or an epoxy resin type, or a two-component reaction type coating material such as an epoxy resin type or a polyurethane resin, as well as an ultraviolet curable type or an electron beam curable type. Any paint may be used, and a coloring agent such as a dye or a pigment for coloring the whole or the whole of the paint may be blended and added so as to be uniformly dispersed in the paint.

In the present invention, as a method for applying the coating composition as described above, a disk-type electrostatic coating method and an automatic conveyor method are appropriate, and a spray-coating method, a dipping method, and a combination of the electrostatic coating method are suitable. Etc. can be adopted.

Conventionally, when applied to the outside of a glass bottle container, the non-uniformity of the thickness of the coating film is particularly difficult for products that are easily affected by ultraviolet light, and the ultraviolet light shielding property is more difficult. For this reason, in the present invention, in addition to the usual coating, a two-step processing using an undercoat paint and an overcoat paint of the same or different composition, or a thermosetting An ultraviolet curable resin paint or the like can be formed on the resin paint or the coating layer. In two or more stages of combination processing, selection or combination of UV absorbers to be blended, for example, differentiation of the amount of UV absorber added in double coating, or combination of absorbers having different maximum absorption bands It is possible to adopt a method of covering a wider absorption wavelength region.

In the configuration of the present invention, in the step of performing a dealkalization treatment on the inner surface layer of the glass bottle container and the formation of a coating layer laminated on the outer surface, particularly in the latter, one or more processing steps are appropriately performed. In this case, it is necessary for the underlayer to have adhesion (prevention of peeling) to the outer surface of the glass and to prevent so-called delamination between the coating films of the coating layer (overcoat). It is. The coating layer formed on the underlayer in this manner not only repairs the unevenness and the like of the surface of the underlayer, but also secures the necessary coating film thickness for adding and blending a desired ultraviolet absorber, and Uniformity of the
Smoothing and the like can be achieved. In addition, in the coating film forming process formed on the outside of the bottle in the present invention, the ultraviolet absorber to be added and blended as described above is selected and combined according to the contents to be stored, for example, differentiation of the amount of the ultraviolet absorber to be added, Alternatively, a desired ultraviolet shielding effect can be ensured by combining one or two or more ultraviolet absorbers having different absorption wavelength ranges, and the problems of the prior art can be solved. In the case of the two-step coating in the present invention, the range of the thickness of the coating film formed on the outside of the bottle after drying and baking is suitably from 10 to 70 µ, and preferably from 30 to 60 µ.

[Action]

In the glass bottle container according to the present invention, in order to extract and remove the alkali component in the glass surface layer inside the container, a dealkalizing agent, for example, ammonium sulfate is used. Ammonium sulfate (NH ₄ ) ₂ SO ₄ crystal particles are appropriately charged at a high temperature of 500 to 600 ° C. in the first step according to the capacity of the container, and the decomposition gas at a high temperature is used for 60 to 120 seconds to decompose the inside of the glass bottle. An inner surface layer subjected to a dealkalization treatment is formed. In this treatment, it is necessary to uniformly contact and act on the inner surface of the bottle with the decomposed gas. In order to prevent this, for example, a method of attaching a cover or a lid can be adopted. In addition, it is necessary to use an appropriate amount of the ammonium sulfate crystal particles. If the amount is too small, the effect of alkali removal is inferior.

Although still not certain details of this mechanism, for example, at least at 500 ° C. as high temperature, the decomposed sulfuric crystal grains was used as the dealkalizing agent, as ammonium hydrogen sulfide (NH ₄₎ HSO ₄ gas and NH ₃ gas It is presumed that the alkali-removing action of extracting and removing the alkali component in the glass surface layer is performed. The inner surface layer thus formed is considered to be hard to be damaged due to an increase in hardness. Moreover, by these de-alkali treatment, other methods of gas decomposing directly the glass bottle mouth and from the proper amount charged under high temperature ammonium sulphate crystal grains as described above, such as SO ₂ gas at a temperature higher than the glass transition point The alkali treatment of the inner surface layer of the glass bottle can also be performed.

In the present invention, the effect of the above-mentioned alkali elution prevention process is defined as an alkali elution test, for example, based on the Japanese Pharmacopoeia (11th revision) General Test Method, Alkali Elution Test Second Method (Surface Method), which is defined as 0.02. Good test results were obtained with samples of sulfuric acid consumption (ml).

The alkali elution prevention treatment of the inner surface layer of such a glass bottle is carried out in consideration of the physical properties and the like of contents such as cosmetics and medicines which are easily affected by alkalinity and / or heat and deteriorate,
It can be appropriately adopted as a simple processing treatment during a series of steps after the glass bottle molding.

Furthermore, the content is stored in the glass bottle container obtained according to the present invention, and as for the coloring prevention effect under a long-term storage condition, for example, a daily change in color tone in a 45 ° C constant temperature and humidity chamber is measured by a color difference meter. Measure and measure ΔE (color difference) to suppress the color change due to heat, or place the sample bottle containing the contents under sunlight exposure, and measure the color change over time with the color difference meter. -An effect of suppressing color tone change with respect to ultraviolet rays can be obtained.

〔Example〕

 Hereinafter, the present invention will be described in detail with reference to examples.

 In addition, the part in an Example shows a weight part.

Example 1 (First step: glass bottle inner surface layer treatment) A container glass material was melted at about 1500 ° C. in a melting tank,
After molding in the process of manufacturing a transparent glass bottle (25g creme container) blow-molded by an automatic molding machine (press-and-blow system, IS Machine), before entering the cooling furnace, 500-600 ° C Under high temperature, ammonium sulfate (NH ₄ ) ₂ SO
₄ About 1 g of crystal particles are charged from the mouth of the glass bottle, and 60 to 120
The inner surface of the glass was dealkalized by gasifying for 2 seconds and adhering to the inner surface. At this time, since the glass bottle had a wide-mouth shape, a cover was attached to the mouth of the bottle in order to prevent the gas from flowing out from the inside of the bottle early after the crystal particles of ammonium sulfate were introduced.

Next, after performing surface corrosion processing with hydrogen fluoride by a conventional method, the outer and inner surface layers of the bottle were washed with water.

(Second Step: Glass Bottle Outer Surface Layer Treatment) First, a paint having the following composition was prepared.

Epoxy resin paint (GL Clear, manufactured by Ishi Kagaku) 100 parts Diluent solvent (mixed solvent of xylene, butanol, isophorone) 30 parts Matting agent, silica powder 5 parts Colorant (pigment titanium white) 5 parts Next, an ultraviolet absorber (Ubinal) was added to the above-mentioned paint composition.
100 parts of a solvent xylene was added to 20 parts of 400 BASF, and 10 parts of a dispersion obtained by stirring was added. In this case, since the ultraviolet absorber is difficult to dissolve and disperse, the ultraviolet absorber was dissolved in advance with an organic solvent xylene, and then mixed with a compounded coating material and uniformly dispersed.

Next, the degreased and washed transparent glass bottle was attached to an appropriate jig, and an electrostatic coating machine (manufactured by Disk Landsberg Co.) firstly dried the undercoat base layer to obtain a coating thickness range. A base layer is formed on the side wall and the bottom of the bottle except for the mouth of the bottle for 30 to 60 seconds at room temperature so that the thickness becomes 25 to 35 μ, and 80 to 100 ° C., 1
Low-temperature drying was performed for 0 minutes.

Next, similarly, using the above-mentioned compounded paint, an electrostatic coating machine is used at room temperature for 30 to 30 μm so that the film thickness range after heat curing becomes 15 to 25 μ.
The coating was applied for 〜60 seconds, and then the glass bottle was placed in a heat drying furnace and subjected to a heat curing treatment at 170 ° C. for 30 minutes.

When the alkali dissolution test was performed on the glass bottle container obtained by the above steps, in accordance with the second method (surface method) of the alkali dissolution test in the general test method of the Japanese Pharmacopoeia (11th revision), A sample treated with the above ammonium sulfate gas at a consumption of 0.02 N sulfuric acid (ml) is 0.03 m / 20 ml of the container.
1, 3.32 ml test results were obtained without treatment. As described above, a remarkable improvement in the prevention of alkali elution was observed even after the treatment with the ammonium sulfate gas.

Further, using a glass piece (width 10 mm × length 30 mm, thickness 3.5 mm) obtained by cutting off the side wall of the matte-colored glass bottle obtained in the above process, the ultraviolet absorption of transmitted light was measured by Shimadzu Spectrophotometer UV- 240
(Manufactured by Shimadzu Corporation). As a result, the wavelength 370n
It showed an ultraviolet absorption of 100% at m and 85% or more at 380 nm. On the other hand, as a comparative example, in the case of an untreated section in which the glass bottle surface coating layer was not formed, the ratio was 10% at 370 nm, and it was confirmed that the product of Example 1 had excellent ultraviolet light shielding properties.

Further, the appearance of the obtained colored glass bottle was in a state of being uniformly coated. Further, after cross-cutting, a cellophane peeling test was performed, and similarly good results were obtained in all tests.

Next, as a coloring prevention effect when the contents were put into the glass bottle container obtained in Example 1, a test against heat was first performed.

As Comparative Example 1, only the outer colored coating layer was formed under the same conditions as in Example 1 without performing the alkali removal treatment on the inner layer,
As Comparative Example 2, a transparent glass candle bottle for chemical experiments and the glass bottle container obtained in Example 1 were each filled with a cosmetic cream product and 30 g of cream containing 1% kojic acid. The sample was placed in a thermo-hygrostat at ℃ and the change in color tone over time was measured with a color difference meter (Z-1001DP made by Nippon Denshoku), and ΔE (color difference) was obtained. The results are shown in Table 1.

As a result, in the bottle container of Example 1 in which the inner layer was subjected to the dealkalization treatment, the increase in ΔE over time was suppressed, and an effect of suppressing coloring of the kojic acid-containing cream by heat was obtained.

Further, as a coloring prevention effect, the effect on sunlight and ultraviolet rays was measured by filling each of the glass bottle containers of Example 1, Comparative Example 1 and Comparative Example 2 with 30 g of a cream containing 1% of kojic acid. The color change over time is measured with a color difference meter (Z-1001DP, manufactured by Nippon Denshoku), and ΔE (color difference)
Is shown in Table 2.

From the results shown in Table 2, the glass bottle container of Example 1 suppresses the increase of ΔE, and the glass case of Comparative Example 1 also suppresses the increase of ΔE. The bottle is colored.
Is rising. As described above, it is shown that the glass bottle container of Example 1 is effective in suppressing coloring of kojic acid cream by sunlight and ultraviolet rays.

Example 2 (First step: glass bottle inner surface layer treatment) Under the same conditions as in Example 1, the glass bottle inner surface layer was treated with an ammonium sulfate gas and subjected to a dealkalization process.

(Second Step: Glass Bottle Outer Surface Layer Treatment) A mixed paint having the following composition was prepared.

Two-pack paint, polyurethane resin (base) (IC-Chemical) 40 parts Hardener (IC-Chemical) 10 parts For 100 parts of the above paint, matting agent (silica powder) 7
Part, colorant green smoke paint, manufactured by Ciba Geigy Co., Ltd.
0.5 part was added and stirred to obtain a uniform dispersion. 2 parts of UV absorber (Ubinal 400, manufactured by BASF)
10 parts of a urethane resin diluent was added and stirred to obtain a dispersion.

Next, the degreased and washed transparent glass bottle was attached to an appropriate jig, and the same coating composition was used as in Example 1 using the above-mentioned paint composition at room temperature for 30 to 60 seconds to remove the bottle side wall excluding the bottle mouth. After coating was applied to the part and the bottom so that the film thickness range after curing was 40 to 70 μm, the coating film was cured at a temperature of 140 ° C. for 25 minutes. With this two-pack reaction type coating, a coating film that can withstand use can be formed by leaving it at room temperature for about 48 hours without heat curing, for example.

The alkali dissolution test was performed on the glass bottle container obtained by the above process in accordance with the second method (surface method) of the alkali dissolution test in the general test method of Japanese Pharmacopoeia (11th revision). 0.02 normal sulfuric acid consumption of sample (ml)
A marked improvement in the prevention of alkali elution was observed in the case where the above-mentioned ammonium sulfate gas treatment was performed as compared with the case where no treatment was performed.

Next, the ultraviolet absorptance of the transmitted light was measured using a Shimadzu spectrophotometer and Shimadzu-UV240 in the same manner as in Example 1. Due to the addition and blending of the ultraviolet absorber, approximately 100% absorption was obtained in the normal wavelength region of 360 nm or less. Although the effect is recognized, in Example 2, the ultraviolet ray absorbing effect of about 100% at the wavelength of 370 nm and 80% at 380 nm was shown, and it was recognized that the ultraviolet shielding property of the product of Example 2 was remarkably improved.

In addition, the appearance of the glass bottle container obtained by the above process was uniformly painted in matte dark green, and after cross-cut, a cellophane peel test was performed. Good results were obtained.

Further, the glass bottle container obtained in Example 2 was replaced with the same product as Comparative Example 1 and Comparative Example 2 in Example 1,
The cream containing 1% kojic acid was filled and placed in a thermo-hygrostat at 45 ° C., and the color change over time was measured with a color difference meter to determine ΔE (color difference). 1.54, 50 days
The number of days passed was 2.76. Further, the ΔE of the kojic acid cream under sunlight exposure was determined in the same manner as in Example 1. As a result, a value of 0.33 was obtained after 30 days, and a value of 0.47 was obtained after 50 days.

Example 3 (First step: glass bottle inner surface layer treatment) In the same manner as in Example 1, the glass bottle inner surface layer was subjected to an ammonium sulfate gas treatment and subjected to a dealkalization process.

(Second process: glass bottle outer surface layer treatment) Underlayer undercoat compounding paint (a) having the following composition and containing an ultraviolet absorbent having an ultraviolet absorbing effect at a wavelength of 370 nm or more. Created.

Polyurethane resin paint (Ishi Kagaku) 100 parts Diluent solvent (urethane solvent) 30 parts Colorant (pigment carbon black) 10 parts Matting agent (silica powder) 7 parts Ultraviolet absorber (Ubinal) D49, BASF Co.) 2 parts Next, 3 parts of an ultraviolet absorber (Pulsol 1789, Givaudan) which shows an absorption effect only in the wavelength range of 370 nm or less with the same blended paint as above. A coating composition (b) for overcoating was prepared using this as a dispersion.

Next, the colored glass bottle degreased and washed in the same manner as in Example 2 was attached to a jig, and an electrostatic coating machine (manufactured by Disk-type Landsberg Co.) was used to first use the underlayer undercoat compounding paint (a). An underlayer was formed on the side wall and bottom of the bottle except for the mouth of the bottle so that the thickness of the coating after heat curing was in the range of 25 to 35 μm.

Further, electrostatic coating was performed by the same electrostatic coating machine using the overcoat compounding paint (b) so that the film thickness range after heat curing was 15 to 25 μm. afterwards,
This glass bottle was placed in a heat drying furnace, and was subjected to a heat curing treatment at a temperature of 170 ° C. for 30 minutes.

When the alkali dissolution test was performed on the glass bottle container obtained by the above process in accordance with the second method (surface method) of the alkali dissolution test in the general test method of the Japanese Pharmacopoeia (11th revision), With the consumption of 0.02 N sulfuric acid (ml) of the sample, the test results were as follows: the amount of each alkali eluted was 0.03 ml per 20 ml of the container, and 3.32 ml of the untreated container, which was treated with the above ammonium sulfate gas. In this way, those treated with ammonium sulfate gas showed a remarkable improvement in alkali elution prevention as compared with those without treatment.

Further, a glass sample piece (width 10 mm × length) similar to that of Example 1 in which the side wall of the colored glass container obtained by the above process was cut off.
30 mm, thickness 3.5 mm), and the ultraviolet absorption of transmitted light was measured by Shimadzu-UV240 (manufactured by Shimadzu Corporation). As a result, when a UV absorber is added and blended, a UV absorption effect of approximately 100% is observed in a wavelength region of 360 mm or less, but it is difficult to improve a shielding effect at a wavelength of 370 nm or more. Is 97% at 370nm and 380nm
The product of Example 3 exhibited an ultraviolet absorption of 85%, and it was confirmed that the product of Example 3 had excellent ultraviolet shielding properties.

In addition, the appearance of the obtained colored glass bottle was in a state of being uniformly coated, and a cellophane peeling test after cross-cut was performed. Good results were obtained in all tests.

Next, the glass bottle container obtained in Example 3 was filled with 30 g of a cream containing 1% kojic acid in the same manner as in Example 1, and placed in a thermo-hygrostat at 45 ° C. The change in color tone over time was measured with a color difference meter, and ΔE (color difference) was obtained. As a result, a value of 1.65 was obtained after 30 days, and 2.70 after 50 days. Further, in the same manner as in Example 1, ΔE of the kojic acid cream under sun exposure was determined.
After 50 days, a value of 0.48 was obtained.

〔The invention's effect〕

As described above, in the present invention, while performing a dealkalization treatment in which the amount of alkali elution is suppressed to a specific value on the inner surface layer of a glass bottle container containing and filling kojic acid-containing cosmetics, the outer surface is coated with a paint compound. With a thickness range of 10 to 70μ and a UV absorption capacity of at least 380nm in the wavelength range of 80% or more, the coating is formed. Therefore, external factors such as light and heat, especially ultraviolet rays and coloring due to alkali elution inside the bottle, etc. When storing cosmetics containing kojic acid, which is unstable and easily deteriorates, it has a remarkable effect of preventing coloring of contents and suppressing color change over time, and being extremely excellent in quality maintenance and ensuring long-term stability. .

 ──────────────────────────────────────────────────続 き Continuation of front page (72) Masahiro Motono 272-5 Nishimachi, Kurume-shi, Fukuoka Prefecture (56) References JP-A-58-64248 (JP, A) JP-A-54-40816 (JP, A) JP-A-61-186249 (JP, A) JP-A-63-129038 (JP, A) JP-A-60-122752 (JP, A) JP-A-51-55312 (JP, A) JP-A-55-143747 (JP, A)

Claims (2)

(57) [Claims] 1. A glass bottle container for storing cosmetics containing kojic acid, wherein the inside of the container is blow-molded with a glass bottle and then ammonium sulfate is used in a general test method of Japanese Pharmacopoeia (11th revision). The test result based on the alkali dissolution test method 2 (surface method) was 0.02N
A glass surface layer that has been subjected to a dealkalization surface treatment with an alkali elution amount of 0.03 ml per unit and a coating composition such as a thermosetting type, a two-part reaction type, or an ultraviolet curing type on the outside of the container, Coating thickness range 10 ~
70μ, UV absorption capacity at least 380nm wavelength range 8
A glass bottle container for cosmetics containing kojic acid, wherein a coating layer of 0% or more is formed. 2. A method for manufacturing a glass bottle container for housing cosmetics containing kojic acid, comprising: using a high temperature of 500 to 600 ° C. at a high temperature of 500 to 600 ° C. before blow-molding the container and before entering a cooling furnace; In the Japanese Pharmacopoeia (11th revision) General test method, the test result based on the alkali dissolution test 2nd method (surface method) is 0.
02 The inner surface of the container is subjected to a dealkalization surface treatment with an alkali elution amount of 0.03 ml per 20 ml of the container at a specified sulfuric acid consumption, and then a thermosetting type containing an ultraviolet absorber, a matting agent, a coloring agent, and the like. With a coating composition such as a two-part reaction type or an ultraviolet curable type, the outer surface of the container is coated with a disk-type electrostatic coating method in a coating thickness range of 10 to 70 μm, and has an ultraviolet absorption capacity of at least 380 nm in a wavelength range of 380 nm. %. A method for producing a glass bottle container for cosmetics containing kojic acid, comprising a coating layer of at least 10%.