JP5592649B2 - Bottle cap - Google Patents

Description

  The present invention relates to a bottle cap.

  Conventionally, as a bottle cap for closing the mouth portion of a bottle filled with a beverage, in addition to a general bottle cap having a function only for closing the mouth portion of the bottle, a container for containing powder or liquid raw material inside There is used a bottle cap of a type that has a portion and opens the housing portion in accordance with the opening operation, and discharges the raw material into the bottle (for example, see Patent Document 1).

Utility Model Registration No. 3130480 JP 2006-82851 A

  In recent years, bottle caps that have a container for containing powdered or liquid raw materials inside have been required to reliably prevent the deterioration of the raw materials, but conventional bottle caps meet such demands. Has become difficult.

  The present invention provides a bottle cap that can more reliably prevent deterioration of raw materials.

  In a general bottle cap having a function only for closing the mouth of a conventional bottle, a light shielding property is provided in order to prevent deterioration of the beverage filled in the bottle by light. For example, Patent Document 2 discloses that it is preferable to use an opaque body as a bottle cap.

Furthermore, it has been conventionally considered that the alteration of beverages is caused by exposure of the beverage to ultraviolet rays, and it has been required to reduce the transmittance of the bottle cap in the ultraviolet region.
Based on such recognition, even in the bottle cap of the type having an accommodating portion that accommodates powder or liquid raw material inside, by providing light transmittance of about 0.3%, The transmittance in the ultraviolet region has been reduced.

However, as a result of studies by the present inventors, it has been found that the cause of alteration of powder or liquid raw materials is not only ultraviolet light but also visible light.
Furthermore, it can be seen that the conventional light-shielding property with a transmittance of about 0.3% cannot prevent the deterioration of the powder or liquid raw material, and the light transmittance is much higher than the conventional light transmittance level. It was found that it is effective to reduce the content to 0.06% or less.

The present invention has been invented based on the above knowledge,
According to the present invention, a lid portion having a top surface portion that closes the mouth portion of the bottle, and inserted into the mouth portion of the bottle, one end portion is fixed to the top surface portion of the lid portion, and A container having a cylindrical container main body with an open end surface located on the side opposite to the top surface part, and being inserted into the mouth of the bottle, the container main body being inserted therein, from one end A bottle cap provided with an outer cylinder portion projecting from the other end of the cylindrical housing main body and screwing the lid onto the other end. And a bottom lid portion that is detachably fitted into the opening of the housing portion main body and faces the one end portion of the outer cylinder portion, and the bottle cap includes the lid portion as the outer cylinder portion. Screwed in the opening direction to drive the housing main body, and the bottom lid portion to One end of the cylindrical portion is dropped from the cylindrical housing main body, and at least the light transmittance in the wavelength region of 280 nm to 800 nm of the top surface portion of the lid portion is 0.06% or less. the top portion includes a polypropylene resin, Ri Do a resin composition containing a colorant, wherein the colorant comprises and the other colorant carbon black and titanium dioxide, a master batch containing the colorant a polypropylene resin were mixed, obtained by injection molding, the content of the carbon black in the resin composition is, the bottle cap is provided Ru der less 0.1 wt%.

  According to the present invention, since the light transmittance in the wavelength region of 280 nm to 800 nm of the top surface portion of the lid portion is 0.06% or less, the top of the lid portion that is most easily exposed to light such as sunlight and fluorescent lamps. It is possible to prevent these lights from reaching the inside of the accommodating portion via the surface portion. Thereby, the quality change of the raw material in a accommodating part can be prevented reliably.

Furthermore, it is preferable that the accommodating part main body and the bottom cover part of the accommodating part are made of a material having a light transmittance of 0.06% or less in a wavelength region of 280 nm to 800 nm at a thickness of 1.6 mm. .
Since the accommodating portion is for accommodating a raw material powder or the like, by configuring such an accommodating portion with a material having a light transmittance of 0.06% or less in a wavelength region of 280 nm to 800 nm, It can prevent that light, such as sunlight and a fluorescent lamp, arrives in the accommodating part. Thereby, the quality change of the raw material in an accommodating part can be prevented more reliably.

Further, the colorant comprises carbon black and titanium dioxide and other colorants, the content of the carbon black in the resin composition, Ru der below 0.1 wt%.
By setting the carbon black content to 0.1 wt% or less, it is possible to adjust the appearance of the top surface portion to a desired color.
Furthermore, the colorant preferably contains Azoiero chromatography. By setting the colorant to have such a composition, it is possible to prevent the deterioration of the raw material in the housing portion more reliably.
The content of the azo yellow in the resin composition is preferably 0.06 wt% or more. By setting the azo yellow content to 0.06 wt% or more, light in the ultraviolet region can be reliably absorbed.
Moreover, it is preferable that content of the said titanium dioxide in a resin composition is 0.1 wt% or more.
By doing in this way, the transmittance | permeability of an ultraviolet region can be reduced more reliably and the quality change of the raw material in a storage part can be prevented more reliably.
Furthermore, the aluminum content in the top surface portion may be 0.4 wt% or more. Moreover, it is good also considering copper phthalocyanine blue in a top | upper surface part as 0.3 wt% or more. Moreover, it is good also considering the copper phthalocyanine green in a top | upper surface part as 0.3 wt% or more. By doing in this way, the transmittance | permeability of the light in a wavelength range of 280 nm-800 nm can be 0.06% or less.

The top surface portion preferably has a light transmittance of 0.01% or less in a wavelength region of 280 nm to 800 nm.
By doing in this way, the quality change of the raw material in a storage part can be prevented still more reliably.
Furthermore, it is preferable that the top surface portion, the accommodating portion main body, and the bottom lid portion are made of the same material.
Moreover, the bottle caps as described above are suitable for storing green tea powder that is likely to be altered by light such as sunlight and fluorescent lamps.

  ADVANTAGE OF THE INVENTION According to this invention, the bottle cap which can prevent the quality_change of a raw material more reliably is provided.

  The above-described object and other objects, features, and advantages will become more apparent from the preferred embodiments described below and the accompanying drawings.

It is a front view which shows the bottle cap and bottle concerning one Embodiment of this invention. It is a disassembled sectional view of a bottle cap. It is sectional drawing of a bottle cap. It is sectional drawing which shows opening operation | movement of a bottle cap. FIG. 3 is a diagram showing light transmittance in Example 1. FIG. 6 is a diagram showing light transmittance in Example 2. FIG. 6 is a diagram showing light transmittance in Example 3. It is a figure which shows the light transmittance in Example 4. FIG. FIG. 10 is a diagram showing light transmittance in Example 5. It is a figure which shows the light transmittance in Example 6. FIG. It is a figure which shows the light transmittance in Example 7. FIG. FIG. 10 is a diagram showing light transmittance in Example 8. FIG. 10 is a diagram showing light transmittance in Example 9. It is a figure which shows the transmittance | permeability of the light in Example 10. FIG. It is a figure which shows the transmittance | permeability of the light in Example 11. FIG. It is a figure which shows the light transmittance in Example 12. FIG. It is a figure which shows the light transmittance in Example 13. FIG. 6 is a diagram showing light transmittance in Comparative Example 1. FIG. 6 is a diagram showing light transmittance in Comparative Example 2. FIG. It is a figure which shows the light transmittance in the comparative example 3. It is a figure which shows the light transmittance in the comparative example 4. It is a figure which shows the light transmittance in the comparative example 5. It is a figure which shows the light transmittance in the comparative example 6. It is a figure which shows the light transmittance in Example 14. FIG. It is a figure which shows the light transmittance in Example 15. FIG.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
First, with reference to FIGS. 1-3, the outline | summary of the bottle cap 1 of this embodiment is demonstrated.
The bottle cap 1 of the present embodiment has a top surface portion 111 that closes the mouth portion 21 of the bottle 2, and is inserted into the lid portion 11 attached to the mouth portion 21 of the bottle 2 and the mouth portion 21 of the bottle 2, One end portion is inserted into the cylindrical storage portion 12 fixed to the top surface portion 111 of the lid portion 11 and the mouth portion 21 of the bottle 2, and the cylindrical storage portion 12 is inserted therein. The other end part of the cylindrical accommodating part 12 protrudes from the end part, and an outer cylinder part 13 into which the cover part 11 is screwed is provided.
The cylindrical accommodating portion 12 is detachably fitted into the cylindrical accommodating portion main body 121 having an open end surface located on the side opposite to the top surface portion 111 of the lid portion 11, and the opening of the accommodating portion main body 121. It has a bottom cover part 122 facing the one end of the cylinder part 13.
In the bottle cap 1, the lid portion 11 is screwed in the opening direction to drive the accommodating portion main body 121, and the bottom lid portion 122 is dropped from the cylindrical accommodating portion main body 121 by one end portion of the outer cylindrical portion 13. Is,
At least the light transmittance in the wavelength region of 280 nm to 800 nm of the top surface portion 111 of the lid portion 11 is 0.06% or less.

Next, with reference to FIGS. 1-4, the bottle cap 1 of this embodiment is demonstrated in detail.
The bottle cap 1 closes the mouth 21 of a bottle 2, for example, a plastic bottle.
As described above, the bottle cap 1 includes the lid portion 11, the accommodating portion 12, and the outer cylinder portion 13.
The lid portion 11 includes a top surface portion 111 that closes the mouth portion 21 of the bottle 2 and a peripheral wall portion 112 that hangs down from the periphery of the top surface portion 111.
The top surface portion 111 has, for example, a substantially circular planar shape. The thickness of the top surface portion 111 is 1 mm or more and 3 mm or less. Among these, from the viewpoint of cost and the like, it is preferably 2.5 mm or less, more preferably 2.0 mm or less, and further preferably 1.8 mm or less. In this embodiment, it is 1.6 mm, for example. From the viewpoint of the strength of the bottle cap 1, the top surface portion 111 preferably has a thickness of 1 mm or more, and more preferably 1.3 mm or more.
The peripheral wall 112 has an inner spiral shape in which a spiral is formed on the inner peripheral surface.

Such a top surface portion 111 is made of a material having a light transmittance of 0.06% or less in a wavelength region of 280 nm to 800 nm. In particular, it is preferable that the light transmittance in the wavelength region of 280 nm to 800 nm is 0.03% or less, and further, the light transmittance in the wavelength region of 280 nm to 800 nm is 0.01% or less. It is particularly preferred that
Note that the peripheral wall portion 112 is integrally formed with the top surface portion 111, and is therefore made of the same material as the top surface portion 111.
The material which comprises such a top | upper surface part 111 contains a resin component (polypropylene resin etc.) and a coloring agent, for example. In addition, as a coloring agent, what contains carbon black is preferable. As the colorant, two or more different colorants can be used in combination depending on the target color.

Further, the content of carbon black in the material constituting the top surface portion 111 and the peripheral wall portion 112 is preferably 0.001 wt% or more, and particularly preferably 0.003 wt% or more.
However, it is desirable to suppress the addition amount of carbon black as much as possible from the viewpoint of the aesthetics and design of the bottle cap. Therefore, it is desirable that the amount of carbon black added be 0.1 wt% or less.
Therefore, it is preferable to add 0.06 wt% or more, particularly 0.1 wt% or more of azo yellow that absorbs light in the ultraviolet region. Thus, by setting the azo yellow content to 0.06 wt% or more, light in the ultraviolet region can be reliably absorbed.
Furthermore, the content of azo yellow is preferably 5.0 wt% or less. When the content of azo yellow exceeds 5.0 wt%, it does not contribute to further decrease in permeability (saturates), resulting in an increase in cost.
The colorant preferably contains titanium dioxide particles. Thereby, the transparency of an ultraviolet region can be reduced. The content of titanium dioxide is preferably 0.1 wt% or more, and particularly preferably 0.5 wt% or more. Moreover, it is preferable that content of titanium dioxide is 5.0 wt% or less.
By setting the content of titanium dioxide to 0.1 wt% or more, the transparency in the ultraviolet region can be reliably reduced. Further, if the content of titanium dioxide exceeds 5.0 wt%, it does not contribute to further decrease in permeability and the cost increases, so 5.0 wt% or less is preferable.
Furthermore, the bottle cap 1 of the present embodiment is added with an antioxidant, a weather resistance improver, an ultraviolet absorber, a filler, a slip agent, an antiblocking agent, an antistatic agent, a flame retardant, a plasticizer, a processing aid, and the like. You may contain the thing.
Thus, by appropriately adjusting the content of azo yellow, carbon black, titanium dioxide, and other components in the colorant and the resin composition, the transmittance of light of 280 nm to 800 nm is 0.06% or less. 0.03% or less, and further 0.01% or less.
Such top surface portion 111 and peripheral wall portion 112 can be various colors other than black, for example, dark green. In addition, although the thing containing the azo yellow, carbon black, and titanium dioxide mentioned above was used as a coloring agent, it is not restricted to this, Carbon black of 0.001 wt% or more and 0.1 wt% or less and other suitable amount of coloring components By adjusting the top surface portion 111 and the peripheral wall portion 112 to various colors, the transmittance of light of 280 nm to 800 nm is 0.06% or less, 0.03% or less, and 0.01 % Or less.

Here, a method for measuring the transmittance of the top surface portion 111 will be described.
The light transmittance of the top surface portion 111 is measured using a UV-visible near-infrared spectrophotometer LAMBDA950 manufactured by PerkinElmer. The measurement wavelength is 280 nm to 800 nm.

The accommodating portion 12 is a cylindrical member and is inserted into the mouth portion 21 of the bottle 2. The container 12 stores a powdery or liquid raw material such as green tea (for example, green tea).
The accommodating portion 12 includes a cylindrical accommodating portion main body 121 and a bottom lid portion 122.
The accommodating portion main body 121 is a bottomless cylinder, one end portion is fixed to the back surface of the top surface portion 111, and the opening on the one end portion side is closed by the top surface portion 111. The accommodating portion main body 121 and the lid portion 11 are integrally formed. The housing main body 121 is inserted into the mouth 21 of the bottle 2. The accommodating part main body 121 has a thickness of 3 mm or less and 1 mm or more.
The bottom lid 122 is fitted into the opening on the other end side (the side opposite to the top surface 111) of the housing main body 121. The bottom cover part 122 is detachable from the opening of the housing part main body 121. The thickness of this bottom cover part 122 is 3 mm or less and 1 mm or more.
The bottom cover part 122 is provided with the pushing part 122A pushed into the said opening, and the flange part 122B provided in the peripheral part of this pushing part 122A while closing the opening of the accommodating part main body 121. As shown in FIG.
The flange portion 122B includes a projecting portion 122C projecting in a horizontal direction (a direction orthogonal to the axis of the housing main body 121) from the peripheral portion of the pushing portion 122A, and a wall provided substantially perpendicular to the peripheral edge of the projecting portion 122C. Part 122D.
A ring-shaped packing P1 is installed on the overhanging portion 122C.
A ring-shaped packing P2 is also installed on the wall 122D.
By pushing the pushing portion 122A into the opening on the other end side of the housing portion main body 121, the other end portion of the housing portion main body 121 is fitted between the wall portion 122D and the outer peripheral surface of the pushing portion 122A. The bottom cover part 122 is attached to the housing part main body 121.
Such accommodating part main body 121 and bottom cover part 122 are comprised with the material whose transmittance | permeability of light of 280 nm-800 nm is 0.06% or less in thickness 1.6mm. Among these, it is preferable that the light transmittance of 280 nm to 800 nm is made of a material having a transmittance of 0.03% or less, and further, the light transmittance of 280 nm to 800 nm is made of a material having a transmittance of 0.01% or less. It is particularly preferred.
Examples of the material constituting the housing part main body 121 and the bottom lid part 122 include the same materials as those for the top surface part 111 and the peripheral wall part 112 of the lid part 11.
The transmittance measurement method is as follows. First, a sample having a thickness of 1.6 mm is prepared.
The light transmittance of this sample is measured using a UV-visible near-infrared spectrophotometer LAMBDA950 manufactured by PerkinElmer. The measurement wavelength is 280 nm to 800 nm.

The outer cylinder part 13 includes a cylindrical first cylinder part 131 and a cylindrical second cylinder part 132 protruding from the outer peripheral surface of the first cylinder part 131.
The 1st cylinder part 131 is a bottomless cylindrical shape. As for this 1st cylinder part 131, one edge part side is inserted in the mouth part 21 of the bottle 2, and the other edge part side protrudes from the mouth part 21 of a bottle.
In addition, the accommodating portion main body 121 is inserted into the first cylindrical portion 131, and the other end portion of the accommodating portion main body 121 protrudes from one end portion of the first cylindrical portion 131. Most of the outer peripheral surface of the accommodating portion main body 121 is covered with the first cylindrical portion 131, and only the other end portion of the accommodating portion main body 121 is exposed from one end portion of the first cylindrical portion 131.
The end surface of one end portion of the first cylindrical portion 131 is opposed to and in contact with the front end of the wall portion 122D of the flange portion 122B of the bottom cover portion 122.
A spiral is engraved on the outer peripheral surface of the other end of the first cylindrical portion 131. The peripheral wall portion 112 of the lid portion 11 is screwed into the other end portion of the first cylindrical portion 131.

The second cylindrical portion 132 is provided so as to surround a substantially central portion of the outer peripheral surface of the first cylindrical portion 131, and the end surface on the mouth portion 21 side of the bottle 2 is opened. A spiral is engraved on the inner peripheral surface of the second cylindrical portion 132, and the second cylindrical portion 132 is screwed into the spiral engraved on the outer peripheral surface of the mouth portion 21 of the bottle 2.
Therefore, the lid portion 11 is attached to the mouth portion 21 of the bottle 2 via the outer cylinder portion 13.
Such an outer cylinder part 13 is comprised with the material containing resin components, such as a polypropylene resin, and a coloring agent, for example, a white coloring agent. This outer cylinder part 13 may be comprised with the material which permeate | transmits light of 280 nm-800 nm exceeding 0.06%, and the transmittance | permeability of 280 nm-800 nm is the same as the cover part 11 grade | etc.,. You may be comprised with the material which is 0.06% or less.

Next, the opening operation of the bottle cap 1 will be described.
As shown in FIG. 4, the lid portion 11 is screwed in the opening direction, that is, the upper side in FIG. 4, and the screwing between the lid portion 11 and the outer cylinder portion 13 is released. Since the lid portion 11 and the housing portion main body 121 are configured integrally, the housing portion main body 121 and the bottom lid portion 122 pushed into the housing portion main body 121 in accordance with the operation of screwing the lid portion 11. Tries to drive upward.
At this time, the bottom cover portion 122 faces and abuts one end portion of the outer tube portion 13, that is, one end portion of the first tube portion 131. The end face of one end prevents the bottom cover 122 from being driven upward, and the bottom cover 122 is separated from the housing main body 121 by the collision between the bottom cover 122 and the end face of the first cylindrical portion 131. It will drop out.
Thereby, the raw material accommodated in the accommodating part main body 121 falls in the inside of the bottle 2, and will be mixed with the drink etc. with which the inside of the bottle 2 was filled.

Next, the effect of this embodiment is demonstrated.
Since the light transmittance of the top surface portion 111 of the lid portion 11 is 0.06% or less in the wavelength region of 280 nm to 800 nm, the top surface portion 111 of the lid portion 11 that is most easily exposed to light such as sunlight or a fluorescent lamp is provided. Accordingly, it is possible to prevent light such as sunlight and fluorescent lamps from reaching the housing portion 12. Thereby, the quality change of the raw material in the accommodating part 12 can be prevented reliably.
In particular, the light transmittance in the wavelength region of 280 nm to 800 nm is 0.03% or less, and further, the light transmittance in the wavelength region of 280 nm to 800 nm is 0.01% or less. By configuring the top surface portion 111, it is possible to more reliably prevent light from reaching the inside of the accommodating portion 12, and to further prevent the deterioration of the raw material in the accommodating portion 12.

Moreover, in this embodiment, the accommodating part main body 121 and the bottom cover part 122 of the accommodating part 12 are comprised with the material which has the light transmittance of 0.06% or less in the wavelength range of 280 nm-800 nm.
Since the accommodating part 12 is for accommodating the powder etc. which are raw materials, such an accommodating part 12 is comprised with the material whose light transmittance in a wavelength range of 280 nm-800 nm is 0.06% or less. Thus, it is possible to prevent light such as sunlight and fluorescent lamps from reaching the housing portion 12. Thereby, the quality change of the raw material in the accommodating part 12 can be prevented more reliably.
In particular, not only the container main body 121 but also the bottom lid 122 is made of a material having a light transmittance of 0.06% or less in the wavelength region of 280 nm to 800 nm. Can be prevented from reaching the inside of the accommodating portion 12 through the bottom lid portion 122, and the deterioration of the raw material in the accommodating portion 12 can be further reliably prevented.
Further, the housing portion 121 and the bottom lid portion 122 of the housing portion 12 are made of a material having a light transmittance of 280 nm to 800 nm of 0.03% or less, and further a light transmittance of 280 nm to 800 nm is 0.01%. By constituting with the following materials, it is possible to more reliably prevent the deterioration of the raw material in the accommodating portion 12.

Moreover, in this embodiment, the raw material of green tea is accommodated in the accommodating part 12. Since the raw material of green tea is likely to be altered by light, it is particularly useful to use the bottle cap 1 as in this embodiment.
Furthermore, in this embodiment, the light transmittance in the wavelength region of 280 nm to 800 nm is 0.06% or less, and the top surface portion contains titanium dioxide and azo yellow in addition to carbon black. By doing in this way, not only the transmittance | permeability of light can be reduced, but the designability and aesthetics of the bottle cap 1 can be improved.

It should be noted that the present invention is not limited to the above-described embodiments, and modifications, improvements, and the like within the scope that can achieve the object of the present invention are included in the present invention.
For example, in the said embodiment, although the cover part 11 and the accommodating part 12 of the bottle cap 1 were comprised with the material whose transmittance | permeability of the light of 280 nm-800 nm is 0.06% or less in thickness 1.6mm, it is not restricted to this. At least the light transmittance in the wavelength region of 280 nm to 800 nm of the top surface portion 111 of the bottle cap 1 may be 0.06% or less. Since the top surface portion 111 is the portion that is most easily exposed to light, it is possible to prevent the raw material from being altered by configuring the top surface portion with the above-described material.

Furthermore, in the said embodiment, although the accommodating part 12 of the bottle cap 1 was filled with the raw material of green tea, not only this but tea raw materials, such as black tea, may be accommodated, for example.
Moreover, in the said embodiment, although the top | upper surface part contained carbon black, it does not need to contain carbon black not only in this. In this case, for example, the light transmittance in the wavelength region of 280 nm to 800 nm can be made 0.06% or less by containing a predetermined amount or more of metal particles that reflect light.
Specifically, by setting the content of aluminum (metal particles) in the top surface portion to 0.4 wt% or more, the light transmittance in the wavelength region of 280 nm to 800 nm is 0.06 with a thickness of 2.5 mm or less. % Or less. Especially, it is more preferable to make content of aluminum in a top | upper surface part into 0.55 wt% or more.
Further, by adding 0.3 wt% or more of copper phthalocyanine blue in the top surface portion without containing carbon black, the light transmittance in the wavelength region of 280 nm to 800 nm is reduced to 0. It can be made 06% or less. Especially, it is more preferable that content of copper phthalocyanine blue in a top | upper surface part shall be 0.4 wt% or more.
Furthermore, the transmittance of light in the wavelength region of 280 nm to 800 nm with a thickness of 2.5 mm or less can be achieved by setting the content of copper phthalocyanine green in the top surface portion to 0.3 wt% or more without containing carbon black. Can be made 0.06% or less. Especially, it is more preferable that content of copper phthalocyanine green in a top | upper surface part shall be 0.4 wt% or more.

Next, examples of the present invention will be described.
(Measurement of light transmittance)
( Reference Example 1)
Using a colorant masterbatch (PPM 6AH090 Green manufactured by Tokyo Ink Co., Ltd.) having the formulation shown in Table 1, a rectangular sample having a thickness of 1.6 mm was prepared.
The sample is formed by mixing 5 parts by weight of the colorant masterbatch with 100 parts by weight of the resin component (polypropylene (PP) resin).
The color of the sample was dark green visually.

( Reference Example 2)
A sample was prepared by mixing 3 parts by weight of the colorant masterbatch with 100 parts by weight of the resin component (PP resin). The other points are the same as in Reference Example 1.
The color of the sample was dark green visually.

( Reference Example 3)
2 parts by weight of the colorant master batch was mixed with 100 parts by weight of the resin component (PP resin) to prepare a sample. The other points are the same as in Reference Example 1.
The color of the sample was dark green visually.

( Reference Example 4)
1 part by weight of the colorant master batch was mixed with 100 parts by weight of the resin component (PP resin) to prepare a sample. The other points are the same as in Reference Example 1.
The color of the sample was dark green visually.

(Example 5)
A colorant master batch (PPM 6AH166 Green manufactured by Tokyo Ink Co., Ltd.) having the composition shown in Table 2 was used. The other points are the same as in Reference Example 1.
The color of the sample was dark green visually.

(Example 6)
A colorant master batch (PPM 6AH167 Green manufactured by Tokyo Ink Co., Ltd.) having the composition shown in Table 3 was used. The other points are the same as in Reference Example 1.
The color of the sample was dark green visually.

(Example 7)
A colorant master batch (PPM 6AH168 Green manufactured by Tokyo Ink Co., Ltd.) having the composition shown in Table 4 was used. The other points are the same as in Reference Example 1.
The color of the sample was dark green visually.

( Reference Example 8)
A colorant master batch (PPM 6AH169 Green manufactured by Tokyo Ink Co., Ltd.) having the composition shown in Table 5 was used. The other points are the same as in Reference Example 1.
The color of the sample was dark green visually.

( Reference Example 9)
A colorant master batch (PPM 6AH170 Green manufactured by Tokyo Ink Co., Ltd.) having the composition shown in Table 6 was used. The other points are the same as in Reference Example 1.
The color of the sample was dark green visually.

( Reference Example 10)
As a colorant master batch, PEX 496 Silver AL (manufactured by Tokyo Ink Co., Ltd.) having the composition shown in Table 7 was used. The other points are the same as in Reference Example 1.
In addition, the color of the sample was silver visually.

( Reference Example 11)
PEX 3272 Gold (manufactured by Tokyo Ink Co., Ltd.) having the composition shown in Table 8 was used as a colorant master batch. The thickness of the sample was 2 mm. The other points are the same as in Reference Example 1.
The color of the sample was visually golden.

( Reference Example 12)
As a colorant master batch, PEX 3167 BLUE (manufactured by Tokyo Ink Co., Ltd.) shown in Table 9 was used. The content of copper phthalocyanine blue in the sample was 0.4 wt%. The other points are the same as in Reference Example 1.
The color of the sample was visually blue.

( Reference Example 13)
As a colorant masterbatch, PEX 3167 BLUE (manufactured by Tokyo Ink Co., Ltd.) similar to that of Reference Example 12 was used. The content of copper phthalocyanine blue in the sample was 0.4 wt%. The sample thickness was 3 mm. The other points are the same as in Reference Example 1.
The color of the sample was visually blue.

( Reference Example 14)
As a colorant master batch, PEX 6AJ207 GREEN (manufactured by Tokyo Ink Co., Ltd.) shown in Table 10 was used. The content of copper phthalocyanine green in the sample was 0.4 wt%. The other points are the same as in Reference Example 1.
The color of the sample was visually green.

( Reference Example 15)
As a colorant master batch, PEX 6AJ207 GREEN (manufactured by Tokyo Ink Co., Ltd.) shown in Table 10 was used. The content of copper phthalocyanine green in the sample was 0.4 wt%. The sample thickness was 3 mm. The other points are the same as in Reference Example 1.
The color of the sample was visually green.

(Comparative Example 1)
PKM-1-4239-5% green (manufactured by OK Kasei Co., Ltd.) was used as a colorant master batch.
The other points are the same as in Reference Example 1.
In addition, the color of the sample was yellowish green visually.

(Comparative Example 2)
A sample composed only of a resin component (PP resin) was prepared without using a colorant masterbatch.

(Comparative Example 3)
As a colorant masterbatch, PEX 3067 YELLOW (manufactured by Tokyo Ink Co., Ltd.) having the composition shown in Table 11 was used. The thickness of the sample was 3 mm. The content of monoazo yellow in the sample was 0.5 wt%.
The other points are the same as in Reference Example 1.
The color of the sample was visually yellow.

(Comparative Example 4)
The same PEX 3067 YELLOW (manufactured by Tokyo Ink Co., Ltd.) as in Comparative Example 3 was used as the colorant master batch. The thickness of the sample was 1.6 mm. The content of monoazo yellow in the sample was 0.5 wt%.
The other points are the same as in Reference Example 1.
The color of the sample was visually yellow.

(Comparative Example 5)
As a colorant masterbatch, PEX 3023 RED (manufactured by Tokyo Ink Co., Ltd.) having the composition shown in Table 12 was used. The thickness of the sample was 1.6 mm. The content of monoazo red in the sample was 0.48 wt%.
The other points are the same as in Reference Example 1.
In addition, the color of the sample was red visually.

(Comparative Example 6)
As a colorant master batch, PEX 3023 RED (manufactured by Tokyo Ink Co., Ltd.) similar to Comparative Example 5 was used. The thickness of the sample was 3.0 mm. The content of monoazo red in the sample was 0.48 wt%.
The other points are the same as in Reference Example 1.
In addition, the color of the sample was red visually.

(Measurements of Examples 5 to 7, Reference Examples 1 to 4 , 8 to 15, and Comparative Examples 1 to 6)
The transmissivity of the samples produced in Examples 5 to 7, Reference Examples 1 to 4 , 8 to 15, and Comparative Examples 1 to 6 was measured.
As a measuring device, an ultraviolet-visible near-infrared spectrophotometer LAMBDA950 manufactured by PerkinElmer was used. The measurement wavelength is 200 nm to 800 nm.
The results of Examples 5 to 7 and Reference Examples 1 to 4, 8 to 15 are shown in FIGS. 5 to 17, 24, and 25, respectively ( Reference Example 1 is FIG. 5, Reference Example 2 is FIG. 6, and Reference Example 3 is a figure. 7, Reference Example 4 is FIG. 8, Example 5 is FIG. 9, Example 6 is FIG. 10, Example 7 is FIG. 11, Reference Example 8 is FIG. 12, Reference Example 9 is FIG. 13, Reference Example 10 is FIG. ( Reference Example 11 is FIG. 15, Reference Example 12 is FIG. 16, Reference Example 13 is FIG. 17, Reference Example 14 is FIG. 24, and Reference Example 15 is FIG. 25.)
18 to 23 show the results of Comparative Examples 1 to 6, respectively (Comparative Example 1 is FIG. 18, Comparative Example 2 is FIG. 19, Comparative Example 3 is FIG. 20, Comparative Example 4 is FIG. 21, and Comparative Example 5) 22 is FIG. 22, and Comparative Example 6 is FIG. 23).
In each figure, the horizontal axis represents the wavelength (nm) of light, and the vertical axis represents the transmittance (%).
In the wavelength range of 280 nm to 800 nm, in Reference Examples 1 to 4, the maximum light transmittance is 0.01%, and in Examples 5 and 6, the maximum light transmittance is 0.06%. Met. Further, in the wavelength region of 280Nm～800nm, in Example 7, a light transmittance maximum is 0.04%, in Reference Example 8, 0.03% light transmittance at the maximum, Reference Example 9 Then, the maximum light transmittance was 0.02%. Further, in Reference Example 10 in a wavelength region of 280Nm～800nm, a 0.009% light transmittance at the maximum, in Reference Example 11, light transmittance is 0.03% at maximum, Reference Example 12 Then, the light transmittance was 0.04% at the maximum, and in Reference Example 13, the light transmittance was 0.01% at the maximum.
In Reference Example 14, the maximum light transmittance was 0.05%, and in Reference Example 15, the maximum light transmittance was 0.02%.
On the other hand, in Comparative Example 1, the maximum light transmittance was about 0.33% in the wavelength region of 280 nm to 800 nm. Further, from Comparative Example 2, it was found that the transmittance of the sample containing no colorant was about 1.2% at the maximum in the wavelength region of 280 nm to 800 nm.
Further, in Comparative Example 3, the maximum transmittance is 0.22% in the wavelength region of 280 nm to 800 nm, and in Comparative Example 4, the maximum transmittance is 0.4% in the wavelength region of 280 nm to 800 nm. In Comparative Example 5, the maximum transmittance is 0.45% in the wavelength region of 280 nm to 800 nm. In Comparative Example 6, the maximum transmittance is 0.24% in the wavelength region of 280 nm to 800 nm. there were.
In Reference Examples 1 to 4 , Example 7 , Reference Examples 8 to 10, and 12, the sample thickness is 1.6 mm. In Reference Example 11, the sample thickness is 2 mm, but at least 1.0 mm or more. If it exists, it turns out that the same effect (transmittance 0.06% or less) is acquired.
Further, the light of 280 nm to 800 nm is obtained by setting the carbon black content to 0.1 wt% or less, the azo yellow content to 0.06 wt% or more, and the titanium dioxide content to 0.1 wt% or more. It is known that a sample having a transmittance of 0.06% or less (thickness of 2.5 mm or less, preferably 1.0 mm or more) is obtained.
Furthermore, a sample having a light transmittance of 280 nm to 800 nm of 0.06% or less by adding 0.4 wt% or more of aluminum or 0.3 wt% or more of copper phthalocyanine blue without containing carbon black ( It has been found that a thickness of 2.5 mm or less, preferably 1.0 mm or more) is obtained.
Further, the transmittance of light in the wavelength region of 280 nm to 800 nm is 0.06% or less (sample) by setting the content of copper phthalocyanine green in the top surface portion to 0.3 wt% or more without containing carbon black. The thickness can be 2.5 mm or less, preferably 1.0 mm or more.

(Sensory test)
( Reference Example 16)
Next, a bottle cap similar to that of the above embodiment was molded.
Specifically, the cap part and the container part of the bottle cap were made of the material having the same composition as in Reference Example 1.
The thickness of the lid portion was 1.6 mm, the thickness of the housing portion main body of the housing portion was 1.4 mm, and the thickness of the bottom lid portion was 1.5 mm.
Each outer cylinder part was comprised from the material which consists of 5 weight part of white colorant master batches, and 100 weight part of resin (polypropylene resin) components.
A bottle cap was filled with 1 g of powdered green tea and left for 60 days under irradiation with a 10,000 Lux fluorescent lamp. Thereafter, the matcha tea in the bottle cap was dissolved in 270 ml of water to obtain a matcha drink.
Thereafter, the color of the matcha drink was measured.
As a measuring device, KONICA MINOLTAS SPECTROPHOTOMETER CM-2500d was used.
(Example 17)
Using the same material as in Example 5, a cap part of the bottle cap and an accommodating part were produced.
Other points are the same as in Reference Example 16.

(Comparative Example 7)
A cap part of the bottle cap and an accommodating part were made of a material having the same composition as in Comparative Example 1. Other points are the same as in Reference Example 16.

The matcha tea beverage produced in Reference Example 16 and Example 17 had a brilliant color, whereas the matcha tea beverage produced in Comparative Example 7 had faded color.
In addition , when the reference example 16 and the example 17 were compared, compared with the example 17, the green tea drink produced by the reference example 16 was a more vivid color.

Furthermore, the taste and smell of the matcha tea beverages in Reference Example 16, Example 17 and Comparative Example 7 were evaluated by three panelists.
All three people felt the taste of the matcha tea beverage of Reference Example 16 and Example 17 deliciously and felt that the flavor was also good, whereas the taste of the matcha tea beverage of Comparative Example 7 was the same as that of Reference Example 16 and Example 17. I felt that the flavor was inferior to the matcha drink.
It should be noted that, when comparing the Reference Example 16 and Example 17, compared to Example 17, more of green tea beverages prepared in Reference Example 16 is delicious taste, flavor is felt to be good.
Sunlight in midsummer and fine weather is about 100,000 lux, and general indoor brightness such as office is about 2000 lux. Accordingly, considering the results of 60-day tests at 10,000 lux ( Reference Example 16, Example 17), the transmittance of 0.06% or less is sufficient to cause the photodegradation of the contents sufficiently in normal use. It can be suppressed.

Claims (8)

A lid having a top surface that closes the mouth of the bottle;
It has a cylindrical containing body that is inserted into the mouth of the bottle and has one end fixed to the top surface of the lid and an end surface located on the opposite side to the top surface of the lid. A containment section;
While being inserted into the mouth of the bottle, the housing main body is inserted therein, the other end of the cylindrical housing main body protrudes from one end, and the lid on the other end A bottle cap provided with an outer tube portion to which
The accommodating portion is
The housing body;
While being detachably fitted into the opening of the housing main body, and having a bottom cover portion facing the one end portion of the outer cylinder portion,
In the bottle cap, the lid portion is screwed in the opening direction with respect to the outer cylinder portion to drive the housing main body, and the bottom lid portion is formed into a cylindrical shape by one end portion of the outer cylinder portion. It is to be removed from the housing body,
The light transmittance in a wavelength region of 280 nm to 800 nm of at least the top surface portion of the lid portion is 0.06% or less,
The top surface portion is
And a polypropylene resin, Ri Do a resin composition containing a colorant,
The colorant includes carbon black, titanium dioxide, and other colorants,
A masterbatch containing the colorant and a polypropylene resin are mixed and obtained by injection molding,
The content of carbon black, 0.1 wt% der Ru bottle cap following the resin composition. The bottle cap according to claim 1,
The container main body and the bottom lid of the container are made of a material having a light transmittance of 0.06% or less in a wavelength region of 280 nm to 800 nm at a thickness of 1.6 mm. The bottle cap according to claim 1 or 2 ,
The colorant is a bottle cap containing azo yellow. The bottle cap according to claim 3 ,
The bottle cap whose content of the said azo yellow in the said resin composition is 0.06 wt% or more. The bottle cap according to any one of claims 1 to 4 ,
The bottle cap whose content of the said titanium dioxide in the said resin composition is 0.1 wt% or more. The bottle cap according to any one of claims 1 to 5 ,
The top surface portion is a bottle cap whose light transmittance in a wavelength region of 280 nm to 800 nm is 0.01% or less. The bottle cap according to any one of claims 1 to 6 ,
The top surface portion, the housing portion main body, and the bottom lid portion are bottle caps made of the same material. The bottle cap according to any one of claims 1 to 7 ,
The bottle cap is a bottle cap for storing green tea powder.

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