WO2005090949A1

WO2005090949A1 - Method of inspecting sealed container and method of producing sealed container product that contains contents

Info

Publication number: WO2005090949A1
Application number: PCT/JP2005/004611
Authority: WO
Inventors: Shingo Masai
Original assignee: Aohata Corporation
Priority date: 2004-03-22
Filing date: 2005-03-16
Publication date: 2005-09-29
Also published as: CN1997887A; JP2005265812A; CN1997887B; JP4085999B2

Abstract

[PROBLEMS] To provide a method of highly accurately inspecting a sealed section of a container body. The method is a method where not only an abnormality of the shape of the container body but also a foreign object-attributed abnormality of the sealed section of the container body can be inspected, and not a method where a visible light is irradiated to the sealed section of the container body and the reflected light is used for the inspection. [MEANS FOR SOLVING PROBLEMS] A method of inspecting a sealed section (2) of a container body (3) of a sealed container (5) composed of the container body (3) with the sealed section (2) surrounding an opening (1) and a lid member (4) for sealing the container body (3). An excitation light-emitting object excited and emits light by ultraviolet irradiation is used as the container body (3). Before the container body (3) is sealed by the lid member (4), ultraviolet (UV) is irradiated to the container body (3) to cause the excitation light-emitting object to emit excitation light, and the light exits from the sealing section (2) is observed.

Description

Specification

Inspection method of sealed container and method of manufacturing sealed container product with contents

The present invention relates to a method for inspecting a sealed container formed of a container body and a lid member for abnormality in a sealed portion of the container body, and a method for manufacturing a sealed container product containing contents using the inspection method.

Background art

[0002] In the fields of food, cosmetics, pharmaceuticals, and the like, there are many products on the market that are filled with the contents of the opening of the container body, which is also made of glass or plastic, and sealed with a metal or plastic lid. I have.

[0003] By the way, when the container body is filled with contents such as blazer-type jam, solids contained in the contents may adhere as foreign matter to the sealing portion surrounding the opening of the container body. In such a case, even if the container body is sealed with the lid, there is a possibility that the airtightness cannot be secured. Further, even if the hermeticity can be ensured, if foreign matter is still trapped between the outer surface of the container body and the lid, mold may be generated in the trapped foreign matter. Alternatively, the problem of production or storage of the container body may cause irregularities in the sealed part itself (thickness exceeding the allowable range, uneven surface, chipping, cracks, etc.). However, even if the lid is used to seal the container body, airtightness cannot be ensured, and the container body may be damaged.

[0004] Conventionally, regarding the inspection of the shape of the bottle mouth (corresponding to the sealed portion) of the container body for the presence or absence of irregularities, the visible light is radiated to the sealed portion of the container body before filling the contents, and the sealing portion force is reduced. The reflected light is photographed with a camera or the like, and the obtained sealed portion image is binarized to form a binarized image, and the binarized image is inspected for the presence or absence of a bottle mouth shape abnormality. Proposed! (See Patent Document 1) o However, this method was able to inspect the molding variation in the size of the bottle mouth of the container body with a certain degree of accuracy, but a good product of the container body before filling the contents was This is only an inspection method for determining defective products, and it is not intended to inspect foreign substances attached to the sealed part after filling the contents of the container body. Dagger There is a problem that it is difficult to be reflected on an image. For this reason, with regard to foreign substances adhering to the sealed part of the container body, visible light is applied to the sealed part of the container body before the container body filled with the contents is sealed with the lid, and reflected light of the sealing part force is emitted. By direct visual observation, or by photographing the reflected light with a camera, the resulting image is visually observed without dithering, thereby inspecting the sealed part of the container body for abnormalities. It is the current situation.

Patent Document 1: Japanese Patent Application Laid-Open No. 2001-147200

Disclosure of the invention

Problems to be solved by the invention

[0006] When the inspection is performed based on the reflected light of the visible light applied to the sealed portion of the container body while pressing, for example, if the container body and the foreign matter are substantially the same color, the reflected light from the foreign matter and There is a large difference in intensity and wavelength between the reflected light from the sealed part of the container body and the problem that it is difficult to discriminate them. In particular, when the container body is transparent, if the contents and foreign matter adhering to the sealed part of the container body are of the same material, the reflected light of the contents is incident on the container body, and a part of the light is emitted from the sealed part. Therefore, there is a problem that it becomes more difficult to distinguish between the container body and the foreign matter. If water droplets adhere to the sealed part of the container body, the water droplets themselves do not affect the sealing performance between the container body and the lid, but the visible light source and the water droplets are far apart. As a result, a lens effect was generated, and light and darkness was generated at the contours of the water droplets. As a result, foreign matters seemed to have adhered to the sealed portion of the container body, and a problem occurred in the accuracy of the inspection. The frequency of these problems was particularly pronounced at higher inspection speeds.

[0007] Also, regarding the shape abnormality of the container main body, the inspection based on the reflected light of the visible light applied to the sealed portion of the container main body can inspect the abnormality with a certain degree of accuracy. There is a need to improve the accuracy of inspection for abnormalities in the sealed part of the container body due to foreign matter that is loosened.

[0008] The present invention has been made to solve the above problems, and relates to a sealed container including a container body having a sealing portion surrounding an opening and a lid member for sealing the container body. When inspecting the sealed part of the container body, not only the method of irradiating visible light to the sealed part of the container body and using the reflected light but also the shape of the container body It is an object of the present invention to provide a method capable of inspecting an abnormality of a sealing portion of a main body with high accuracy. Means for solving the problem

[0009] The inventor of the present invention does not use the reflected light of the visible light applied to the sealing portion of the container body, but instead emits the sealing portion force light. The inventors have found that they can be detected well, and have completed the present invention.

That is, the present invention is a method for inspecting a sealed portion of a container main body of a sealed container including a container main body having a sealing portion surrounding an opening and a lid member for sealing the container main body. As the container body, a container body having an excited luminescent substance that emits light when excited by ultraviolet irradiation is used, and the container body is irradiated with ultraviolet light to excite and emit light before the container body is sealed with the lid member. An inspection method characterized by exciting a substance to emit light and observing emitted light emitted from the sealing portion.

[0011] The present invention also provides a container body having an excitation light-emitting substance that emits light when excited by ultraviolet irradiation and having a sealed portion surrounding an opening, the contents being filled from the opening, and the container body being By irradiating ultraviolet rays to excite the excited luminescent substance to emit light, and observing the emitted light emitted from the sealed portion, and confirming the presence or absence of abnormalities in the sealed portion, the container body having no abnormalities is closed with the lid member. Provided is a method for producing a sealed container product containing contents, characterized by sealing.

The invention's effect

[0012] According to the present invention, a container body having an excited luminescent substance that emits light when excited by ultraviolet irradiation is used as the container body, and the luminescent substance emitted from the sealed portion of the container body emits light. Is inspected to see if there is any abnormality in the sealed part.If there is foreign matter adhering to the sealed part that may impair the sealed state of the sealed part, the foreign matter blocks outgoing light, resulting in large contrast and other problems. Since the difference can be observed, the presence of the foreign matter can be easily recognized, and the inspection of the sealed portion of the container body becomes easy.

Brief Description of Drawings

FIG. 1 is an explanatory diagram of an inspection method according to the present invention.

FIG. 2 is a front view of a main part of an inspection device used in the present invention.

FIG. 3A is an image processing diagram of a contact portion of a container to which the present invention is applied. FIG. 3B is an image processing diagram of a contact portion of a container to which the present invention is applied.

Explanation of symbols

[0014] 1 opening

2 Sealing part

3 Container body

4 Lid member

5 sealed container

6 Foreign matter

BEST MODE FOR CARRYING OUT THE INVENTION

Hereinafter, the present invention will be described in detail.

The present invention relates to, for example, as shown in FIG. 1, a sealed container 5 comprising a container body 3 having a sealing portion 2 surrounding an opening 1, and a lid member 4 for sealing the container body 3. This is a method for inspecting the sealed part of the container body. In the present invention, a container body having an excited luminescent substance that emits light when excited by ultraviolet irradiation is used as the container body 3, and the container body 3 is exposed to ultraviolet light before the container body 3 is sealed with the lid member 4. The excitation light-emitting substance is excited by UV irradiation to emit light, and the emission light hv emitted from the sealed portion 2 is observed. Therefore, when the foreign matter 6 exists in the sealing portion 2, the foreign matter 6 blocks the emission light h v, so that the presence or absence of the foreign matter 6 can be easily determined. In addition, since emitted light is emitted from the entire area of the sealing portion 2, irregularities in the shape (thickness exceeding the allowable range, surface unevenness, chipping, cracks, etc.) can be easily determined.

[0017] The term "emitted light emitted from the sealed portion" refers to the light at the surface of the sealed portion or in the vicinity of the surface where only the emitted light guided through the structural material of the container body and emitted from the sealed portion is used. The sealing portion itself contains light emitted.

The excited luminescent substance used in the present invention, which emits light by excitation by ultraviolet irradiation, emits light, for example, visible light by absorbing the energy of ultraviolet rays. In addition, inorganic excitation light-emitting substances and organic excitation light-emitting substances having stable light emission characteristics over a long period of time can be mentioned. Specific examples of such an inorganic excited light emitting substance include rare earth substances (simple substances such as cerium, tin or chromium, ions or compounds, etc.), Calcium tungstate, lead-containing barium silicate, europium-containing strontium phosphate, europium-containing yttria, cerium-containing yttria, copper or silver, tin, manganese, critical element, aluminum, cadmium-containing zinc or manganese-containing gallium Magnesium phosphate, magnesium fluoride, calcium fluoride, oxygen-deficient zinc oxide, zinc oxide containing bitumen, zinc oxide containing cerium, zinc oxide containing cesium, zinc silicate containing manganese or arsenic, zinc cadmium containing bismuth, and zinc cadmium containing bismuth Bismuth-containing sulphide strontium and the like. Examples of the organic excitation light emitting substance include polyethylene terephthalate, polybutylene terephthalate, polyethylene naphthalate, etc., such as peranine, eosin, diaminotilbene, thioflavin T, rhodamine, and international orange. Known fluorescent dyes and fluorescent pigments other than these can also be used. These substances can be used alone or in combination of two or more.

[0019] As the container body used in the present invention, a container formed of a glass, resin, ceramic, metal, paper, or other component member to form a space for containing contents can be used. . They may be transparent, translucent or opaque to the emission light of the excited luminescent substance. As the lid member, a known lid made of glass, metal, or resin can be used.

[0020] When a container body made of a transparent or translucent component is used for the emission light of the excitation light-emitting substance, the component itself is, to varying degrees, similar to the light guide of the optical fiber. Shows sex. Therefore, when a container body made of a component transparent or translucent to the emission light of the excitation light-emitting substance is used, the excitation light-emitting substance can be arranged at an arbitrary position in the container body. Conversely, when a container body that is opaque to the emission light of the excitation light-emitting substance is used, it is necessary to arrange the excitation light-emitting substance on the surface of the sealed portion or in the vicinity thereof.

[0021] In the present invention, the force with which the container body is hermetically sealed by the lid member As the sealing style, a known sealing style can be adopted. For example, there is a mode in which the lid member is physically fitted to the sealing portion of the container body, for example, sealed by fitting, screwing, folding, or the like. Furthermore, when high confidentiality is required, in which leakage of gas or liquid, invasion of microorganisms, etc. is required, it is preferable to physically fit the fitting portion via a flexible knocking material. That's right. Specific examples of the form of the container include, for example, sealed wide-open containers, narrow-mouth containers such as bottles, and box-like tappers in the fields of foods, seasonings, pharmaceuticals, cosmetics, and paints.

[0022] In addition to the physical fitting, a method of sealing the lid member to the container body by heat welding may be used. Specific forms of the container include, for example, cup-shaped containers in the fields of foods, seasonings, pharmaceuticals, cosmetics, and paints, and sheet-shaped containers such as tablets.

In the present invention, the excited luminescent substance that emits excited light upon irradiation with ultraviolet light may be disposed on the container body such that the emitted light is emitted from the sealed portion. For example, (1) an embodiment in which the excited luminescent substance is dispersed in a constituent member of the container body (specifically, when the constituent member is made of transparent glass, a trace amount of rare earth element is contained in the molten glass as a raw material) (2) An embodiment in which the constituent members of the container body themselves are made of an excited luminescent substance (specifically, the constituent members of the container body are excited by luminescence. (E.g., an embodiment composed of a resin having a functional group having a function (such as a benzene ring)), and (3) an embodiment in which the excited luminescent substance is disposed on at least a part of the surface of the container body (specifically, In accordance with the level of light transmittance of the container body, the excitation light-emitting substance or a coating composition containing the same is exposed to a part of the surface of the container body (side surface, opening, bottom surface) by printing, spraying, dipping, etc. (4) at least a luminescent substance-containing layer (Specifically, as a constituent material of the container body, an embodiment composed of a laminated structural material having at least an excited luminescent resin layer composed of a resin having a functional group having an excited luminescent function, etc. Such a multilayer structure material can be manufactured by a known laminating method such as laminating with an adhesive, laminating by heat fusion, or laminating by extrusion lamination. When the amount of the luminescent substance used is suppressed or the output of the ultraviolet lamp is suppressed, on the other hand, it is susceptible to ultraviolet rays. It is preferable to provide an excited luminescent resin layer on the outermost layer.

[0024] The amount of the excited luminescent substance that emits light by ultraviolet irradiation can be appropriately determined according to the type of the excited luminescent substance, the mode of applying the excited luminescent substance to the container body, and the like. For example, the mixing ratio of cerium in a glass bottle is about 0.01% by weight. In addition, a laminated structural material obtained by laminating a polyethylene terephthalate resin layer with another resin layer. When forming the container body, the thickness of the polyethylene terephthalate resin layer is preferably 5-1 OO / zm. In addition, when the paint containing the excited luminescent substance is applied to the container body, it may be applied so as to have a thickness of several angstroms and a thickness of 15 m.

[0025] The ultraviolet irradiator used to irradiate the excited luminescent substance with ultraviolet light is, for example, a commercially available industrial high-power ultraviolet lamp or a general-purpose fluorescent lamp type black light. Depending on the type of substance, etc., select the optimal one from 250mm-400nm. Regarding the output, the optimum output can be selected depending on the size of the container body and the device, the intended inspection method, and the like.

The power of the sealing portion can be observed by observing the emitted light directly by visual observation of the sealing portion. Alternatively, an image obtained by photographing the sealing portion with a camera can be obtained by a known image processing. The image may be processed by a method, and the processed image may be visually observed and automatically analyzed by a computer. When the image processing method is used, since the inspection image can be enlarged, the size of the foreign matter that can be detected can be reduced as compared with a simple visual observation. In addition, the time required for inspection can be greatly reduced.

A specific example of the above-described inspection method of the present invention will be described below.

That is, a specific example of the inspection method of the present invention includes a glass container main body having a sealing portion around an opening, and a lid fitted to the sealing portion to seal the glass container main body. A method for inspecting a sealed portion of a glass container main body of a sealed container that also has a member and a force, wherein a tin-based primer that emits light by being excited by ultraviolet irradiation is applied to an outer surface of the glass container, Further, a glass container body in which a polyethylene coating film is formed on the tin-based primer coating film is used, and before the lid member is fitted to the sealing portion of the glass container body, an ultraviolet ray is applied to the glass container body. To excite the tin-based primer to emit light, and observe the emitted light emitted from the sealed portion.

[0029] Next, there is provided a method for producing a sealed container product containing contents such as food in a sealed container, medicine in a sealed container, cosmetics in a sealed container, and paint in a sealed container by using the inspection method of the present invention. Can be. In other words, the method for producing a sealed container product containing contents includes the steps of: providing a container body having an excited luminescent substance that emits light upon excitation by ultraviolet irradiation and having a hermetically sealed portion around an opening; And irradiate the container body with ultraviolet light Then, the excited luminescent substance is excited to emit light, and by observing the emitted light emitted from the sealing portion, the presence or absence of abnormality in the sealing portion is confirmed. It is characterized by being sealed. This manufacturing method can have the same configuration as the conventional method for manufacturing a sealed container product with contents, except that the inspection method of the present invention is used. Here, the constituent members of the container main body may show light transmissivity with respect to the emission light of the excitation light emitting substance!ヽ. The excitation light-emitting substance is dispersed in the constituent member of the container body, and the constituent member of the container body itself is composed of the excitation light-emitting substance. The part may be provided with the excited luminescent substance. Alternatively, the container body may be hermetically sealed by heat-sealing the lid member to the sealing portion, and the sealing may be performed by fitting the lid member to the sealing portion.

A specific example of the above-described method for producing the sealed container product with contents according to the present invention will be described below.

[0031] That is, a specific example of the production method of the present invention is that an ultraviolet light is applied to the outer surface of a glass container main body having an excitation light-emitting substance that emits light by being irradiated with ultraviolet light and having a sealing portion surrounding an opening. A tin-based primer, which emits light when excited by irradiation, is coated with a tin-based primer, and a polyethylene coating film is formed on the tin-based primer coating film. After filling, the glass container body is irradiated with ultraviolet light to excite the excited luminescent substance to emit light, and by observing the emitted light emitted from the sealing portion, it is checked whether or not the sealing portion is abnormal. The lid is sealed by fitting the lid member into the sealing portion of the glass container body without the seal.

Example

Hereinafter, the present invention will be described with reference to the embodiments, but the present invention is not limited to the following examples unless it exceeds the gist of the present invention. FIG. 2 is a front view of a main part at the time of a visual inspection according to an embodiment of the present invention, and FIG. 3 is an explanatory diagram at the time of an automatic inspection in which the inspection is photographed by a camera and image processing is performed.

Example 1

25 μm-thick amorphous copolyester (Eastar PETG copolyester, Eastman Chemical Co., Ltd.) having a benzene ring with an excitation light emission function on the inner surface of the container and the heat sealing surface Using a composite sheet obtained by laminating a stretched film and a non-stretched polyester sheet (A-PET, Eastman Chemical Co., Ltd.) with a thickness of 500 μm using a heat-sealing lamination, using a heated and pressurized air sheet molding machine, A transparent plastic molded body with a diameter of 80 mm, an opening of 60 mm in diameter, a bottom of 50 mm in diameter, and a depth of 30 mm was formed.

[0034] The contents (strawberry jelly) were filled in the transparent plastic molded container body. At this time, Sample A was prepared by attaching a part of the content (eg, dietary fiber and seeds) as a foreign substance to the sealing portion of the flange portion.

[0035] The sample A was subjected to a ring-shaped ultraviolet lamp of an inspection device as shown in Fig. 2 (in the figure, a container body 21, a contact portion 22, a ring-shaped ultraviolet lamp 23, a power supply 24, a camera 25, and an image processing device 26). It was transported by conveyor 27 directly below 23, and irradiated with ultraviolet rays (peak wavelength = 368 nm, wavelength range = 350-400 nm) from three ultraviolet lamps (black light (National); output 10 W). As a result, it was observed that the entire container body of sample A glowed pale. As for the force, the emitted light could be visually observed from the contact part of the container body, and foreign matter such as dietary fiber and seeds attached to the sealed part could be easily identified with high precision as a shadow. When 100 similar samples A were prepared and inspected in the same manner, the presence of foreign substances could be determined for all 100 samples.

Instead of visual observation, using the apparatus shown in FIG. 2, an upward force camera photographs the sealed portion where no foreign matter is attached and the sealed portion where the foreign matter is attached, and the foreign matter is attached. The image of the sealing portion 22 (FIG. 3A) and the image having the foreign matter 28 attached thereto (FIG. 3B) were subjected to arithmetic processing by an image processing device to check whether or not the foreign matter was attached to the sealing portion. As a result, as in the case of the visual observation, it was possible to determine the presence of foreign matter in all 100 samples A. In FIGS. 3A and 3B, 29 indicates the contents.

[0037] As a result of the inspection, the transparent plastic molded container containing strawberry jelly in which no foreign matter adheres to the sealed portion is sealed with a lid material film (polyethylene terephthalate Z aluminum Z sealant) on the flange portion of the transparent plastic molded container. ) Could be performed by heat melting.

Example 2

Polyethylene terephne with benzene ring with excitation and emission function in outermost and inner layers of container Tarate (PET) (Nippon Petpet; V = 0.84, MV = 4000 Boyes) Z adhesive Z Intermediate layer (oxygen barrier resin EVOH (Kuraray Co., Ltd.)) Z adhesive Z polyethylene The three-layer machine material was arranged in the order of terephthalate, and a thin, transparent bottle with an average thickness of 0.2-0.4 mm and a capacity of 500 ml was molded by injection flow molding. A sample B was prepared by filling the bottle filled with strawberry juice) with foreign substances such as dietary fiber and seeds, which are part of the contents, in the sealed part at the mouth of the bottle.

[0039] The sample B was inspected by visual observation of the sealed part of the container in the same manner as in Example 1, and it was found that foreign matter such as dietary fiber and seeds attached to the sealed part was easily and accurately formed as a shadow. Could be determined. When 100 similar samples B were prepared and inspected in the same manner, the presence of foreign substances could be determined for all 100 samples.

[0040] As a result of the inspection, if a foreign substance adheres to the sealed portion, the narrow bottle transparent container containing strawberry juice is sealed by screwing a lid material into the sealed portion of the narrow bottle transparent container. Was completed.

Example 3

After mixing and melting 0.01% of cerium (excitation luminescent substance) in a commonly used glass container material (soda glass), a wide-mouthed glass bottle container is molded and formed, and the surface is coated with tin, which is an excitation luminescence substance. gave. While the transparent wide-mouthed glass bottle container is filled with the contents (fruit jam), the sealing part at the opening of the bottle container contains foreign substances such as dietary fiber and seeds as part of the contents (fruit jam) as a foreign substance. Sample C was prepared by attaching.

[0042] For this sample C, as in Example 1, the sealed portion of the container was inspected by visual observation, and foreign matter such as dietary fiber and seeds attached to the sealed portion was easily and accurately formed as a shadow. Could be determined. When 100 similar samples C were prepared and inspected in the same manner, the presence of foreign substances could be determined for all 100 samples.

As a result of the inspection, it was possible to seal the strawberry jam-filled wide-mouthed glass bottle container having no foreign matter attached to the sealed portion by fitting a lid material to the sealed portion of the wide-mouthed glass bottle container.

Example 4

The glass container used in Example 3 containing 0.01% of cerium as an excited luminescent substance From the material, a glass container having a sealed part with a bottle mouth diameter of 27 mm and a width of 1.5 mm was produced. This glass container is filled with strawberry juice as the contents in the same manner as in Example 2, and the sealed portion has a major axis of 0.3 mm, 0.4 mm, 0.5 mm, 0.6 mm, 0.7 mm, 1. Omm. Solid matter having a size was adhered as a foreign substance, and the presence or absence of foreign matter was examined by visual observation and image processing as in Example 1. In the case of visual observation, 1. Foreign matter having a size of Omm could be completely discriminated, but as the size became smaller, the accuracy of discrimination tended to decrease. On the other hand, when inspected by image processing, it was found that if the size of the foreign matter was 0.5 mm, the foreign matter could be completely discriminated, and the size of the foreign matter could be discriminated using image processing to be smaller. .

Comparative Example 1

For the samples A, B and C prepared in Example 13-3, a foreign substance inspection of the sealed part of the container was performed in the same manner as in Example 1 except that a commercially available white fluorescent lamp (30 W) was used instead of the black light. As a result of visual observation, as for Sample A, out of 100 samples with foreign substances, 38 could be determined to have foreign substances attached. As for Sample B, 48 of the 100 samples with foreign matter were able to be determined to have foreign matter attached. Regarding Sample C, 42 of the 100 samples with foreign matter could be determined to have foreign matter attached. As described above, when the reflection of visible light was used, the inspection accuracy and the inspection efficiency were significantly reduced.

Industrial applicability

According to the inspection method of the present invention, a container body having an excited light-emitting substance that emits light when excited by ultraviolet irradiation is used, and the light-emitting substance emitted from the sealed portion of the container body is used. Inspection of the sealed part for abnormalities by observing the emitted light, if foreign matter that is obstructing the sealed state of the sealed part adheres to the sealed part, the foreign matter blocks outgoing light, resulting in a large contrast. It is possible to easily recognize the presence of foreign matter, and to easily inspect the sealed part of the container body for any abnormalities. Therefore, the inspection method of the present invention is useful for inspecting the sealed portion of the container body for abnormalities.

Claims

The scope of the claims

[1] A method for inspecting a sealed portion of a container main body of a sealed container comprising a container main body having a sealing portion surrounding an opening and a lid member for sealing the container main body, wherein the container main body is Using a container body having an excited luminescent substance that emits light when excited by ultraviolet irradiation, before sealing the container body with the lid member, irradiates the container body with ultraviolet light to excite and emit the excited luminescent substance; An inspection method characterized by observing emitted light emitted from the sealing portion.

[2] The inspection method according to claim 1, wherein the constituent member of the container main body shows light transmittance with respect to light emitted from the excited luminescent substance.

[3] The inspection method according to claim 1 or 2, wherein the excited luminescent substance is dispersed in a constituent member of the container body.

[4] The inspection method according to claim 1 or 2, wherein a constituent member of the container body itself is made of the excited luminescent substance.

5. The inspection method according to claim 1, wherein the excited luminescent substance is disposed on at least a part of the surface of the container body.

[6] The inspection method according to any one of [15] to [15], wherein the container body is sealed by heat-sealing the lid member to the sealing portion.

[7] The inspection method according to any one of [15] to [15], wherein the container body is hermetically sealed by fitting a lid member to the sealing portion.

[8] The sealed portion of the glass container main body of the sealed container including a glass container main body having a sealing portion surrounding the opening and a lid member fitted to the sealing portion for sealing the glass container main body. In the inspection method, a tin-based primer, which emits light when excited by ultraviolet irradiation, is applied to the outer surface of the glass container as a glass container body, and polyethylene is coated on the tin-based primer coating film. Using a glass container body having a coating film formed thereon, and before fitting the lid member to the sealing portion of the glass container body, irradiating the glass container body with ultraviolet light to excite the tin-based primer to emit light, The inspection method characterized by observing emitted light emitted from the sealing portion.

[9] A dense material that contains an excited luminescent substance that emits light when excited by ultraviolet irradiation and surrounds the opening A container body having a sealed portion is filled with the contents from the opening, the container body is irradiated with ultraviolet rays to excite an excited luminescent substance, and the emitted light emitted from the sealed portion is observed. A method for producing a sealed container product with contents, comprising: after confirming the presence or absence of an abnormality in the sealed portion, and sealing the container body having no abnormality with the lid member.

10. The production method according to claim 9, wherein the constituent members of the container main body show light transmittance with respect to emission light of the excited luminescent substance.

11. The method according to claim 9, wherein the excited luminescent substance is dispersed in a constituent member of the container body.

[12] The production method according to claim 9 or 10, wherein a constituent member of the container body itself is composed of the excited luminescent substance.

13. The production method according to claim 9, wherein the excited luminescent substance is disposed on at least a part of the surface of the container body.

14. The production method according to claim 9, wherein the container body is sealed by heat-sealing the lid member to the sealing portion.

[15] The method according to any one of claims 9-113, wherein the container body is sealed by fitting the lid member to the sealing portion.

[16] An exciton-emitting tin-based material that is excited and emits light by ultraviolet irradiation on the outer surface of a glass container body that has an excited light-emitting substance that emits light when excited by ultraviolet light and has a sealed portion surrounding an opening. A glass container body having a primer coated thereon and a polyethylene-based coating film formed on the tin-based primer coating film is filled with the contents of the opening portion, and the glass container body is exposed to ultraviolet rays. Irradiation excites the excited luminescent substance to emit light, and after observing the emission of light emitted from the sealed part to confirm the presence or absence of any abnormality in the sealed part, the light is applied to the sealed part of the glass container body without any abnormality. A method for producing a sealed glass container product containing contents, wherein the product is sealed by fitting a lid member.