JP2006168741A - Shading bottle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a shading bottle which facilitates the recycling of a bottle body, and prevents a cuppy bottom member, which shades the bottom of a bottle body from light, from coming off from the bottle body. <P>SOLUTION: The shading bottle includes a transparent plastic bottle body 2 whose trunk 22 is covered with a shading cylindrical label 5, and the shading cuppy bottom member 3 which is arranged to cover the bottom 20 of the bottle body 2. The cylindrical label 5 covers the upper end of the bottom member 3 to keep the bottom member 3 at the bottom 20 of the bottle body 2. A grounding projection 25 is projected downward from the bottom 20 of the bottle body 2 to serve as a ground part of the bottle body 2, and a flat surface 32 is formed on the inner surface of the bottom member 3 to support the grounding projection 25 of the bottom body 2. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a light-shielding bottle, and in particular, a light-shielding with a bottom member in which a body portion of a bottle body is covered with a light-shielding cylindrical label, and a bottom portion of the bottle body is covered with a light-shielding cup-shaped bottom member. About sex bottles.

  A bottle containing a beverage that is likely to be discolored or deteriorated by light, such as beer, milk, or a beverage containing vitamins, usually has a light-shielding property in order to protect the beverage from light. In general, bottles containing colorants are used to give the bottles light-shielding properties, but there is a problem that it is difficult to collect and reuse used bottles due to the colorants contained. is there.

  Therefore, it is conceivable that the bottle is made of transparent plastic or glass that is not colored, and the body is covered with a light-shielding cylindrical label. However, since the bottom of the bottle is exposed without being shielded, for example, when the bottle is displayed on a transparent glass shelf, a net, etc., light enters from the exposed bottom and the beverage such as beer is altered. there's a possibility that. Therefore, it is conceivable to cover the bottom of the bottle with a light-blocking cup-shaped bottom member to prevent light from entering from the bottom. The cup-shaped bottom member is held at the bottom of the bottle main body by covering the upper end of the side wall with a cylindrical label, but by having the side wall, the horizontal relative to the bottle main body (bottle) This is preferable because it is less likely to come off from the bottle body when compared with a flat plate-like bottom member.

  In order to prevent such a cup-shaped bottom member from coming off the bottle body, the inner surface shape of the cup-shaped bottom member is matched with the shape of the bottom of the bottle body, and the gap between the two is made as small as possible. It is possible. Therefore, in the configuration in which the grounding projection is provided to project downward on the bottom of the bottle body and the grounding projection serves as the grounding portion of the bottle body, the inner surface of the cup-shaped bottom member is also connected to the grounding projection of the bottle body. In order to prevent relative displacement between the two, it is preferable to use a concave shape to be engaged and to design a small gap therebetween.

  However, when the present inventors tried to engage the inner surface of the cup-shaped bottom member with a concave shape and engage with the grounding protrusion of the bottle body, the engagement state of the two is released when the bottom of the bottle body expands greatly. It turns out that there is a fear.

  Therefore, the present invention has been made in view of the above-described conventional problems, and in the light-shielding bottle, it is easy to recycle the bottle body, and the cup-shaped bottom member for shielding the bottom of the bottle body comes off from the bottle body. It is an object to provide a light-shielding bottle that can be prevented.

  The present invention has been made to solve the above-mentioned problems, and the light-shielding bottle according to the present invention is a light-shielding bottle, and is made of a transparent plastic whose body is covered with a light-shielding cylindrical label. A bottle body and a cup-shaped bottom member having a light-shielding property placed on the bottom of the bottle body, and the bottom member is held on the bottom of the bottle body by the cylindrical label covering the upper end of the bottom member. The bottom of the bottle body has a grounding projection protruding downward so as to be the grounding portion of the bottle body, and a flat surface for supporting the grounding projection of the bottle body is formed on the inner surface of the bottom member. It is characterized by. It should be noted that the flat surface is not limited to a perfect flat and may be substantially flat.

  In the light-shielding bottle having this configuration, the bottle body and the cup-shaped bottom member are separated by removing the cylindrical label from the bottle body, and the bottle body is made of a transparent plastic and contains a colorant. Since there is not, the separated bottle body can be collected for recycling. And, since the flat surface is formed on the inner surface of the bottom member and the flat surface is in contact with and supports the grounding protrusion of the bottle body, even if the bottom part of the plastic bottle body expands greatly, the bottle body The grounding protrusion slides on the flat surface of the bottom member.

  In particular, it is preferable that a grounding protrusion protrudes downward on the outer surface of the bottom member at a position below the flat surface so as to be a grounding portion of the bottom member. The weight of the bottle body is supported by the flat surface of the bottom member via the grounding protrusion of the bottle body. By forming the grounding protrusion of the bottom member below the flat surface, Compared to the case where the grounding protrusion of the material is displaced in the horizontal direction, the bottom member is prevented from being deformed, and a stable standing state of the light-shielding bottle can be obtained. In particular, when the light-shielding bottle is transported by a belt conveyor, the light-shielding bottle is prevented from falling and a stable transport state is obtained.

  Further, it is preferable that a vertical wall portion having a predetermined length is provided on the side wall portion of the bottom member. In the parts feeder for aligning and supplying the bottom member in the manufacturing process of the light-shielding bottle, when the guide member passes the side wall of the bottom member in the horizontal direction and passes it from a predetermined location to another location, The wall can be pushed by the guide member. Therefore, the bottom member can be transferred from a predetermined location to another location without lifting.

  Furthermore, a concave portion recessed inward of the bottle body is formed inside the grounding protrusion at the bottom of the bottle body, and the flat surface of the bottom member is provided around the side wall portion of the bottom member. It is preferable that a convex portion protruding upward from the flat surface so as to enter the concave portion of the bottle main body is formed on the inside. The horizontal displacement of the bottom member relative to the bottle body is prevented by the side wall portion of the bottom member, but by forming a convex portion inside the flat surface and entering the concave portion of the bottle main body, While the side wall portion of the bottom member prevents displacement from the outside, the convex portion of the bottom member prevents displacement from the inside, and the displacement can be prevented more reliably.

  Furthermore, it is preferable that a vent hole is formed in the bottom member. Since the bottom member is cup-shaped, if water enters the inside of the bottom member, that is, between the bottom member and the bottle body in the state where the bottom member is covered on the bottom of the bottle body, the water is removed from the vent hole. It is possible to discharge the water from the outside to the outside, and to discharge the evaporated water to the outside from the vent hole, so that good air permeability is ensured inside the bottom member. In particular, when the cylindrical label is a shrink label, it is often passed through a shrink tunnel using steam. Therefore, there is a great merit of providing a vent hole to ensure air permeability.

  Further, it is preferable that reinforcing ribs are provided on the inner surface or the outer surface of the bottom member. The reinforcing ribs prevent the bottom member from being twisted, and when the plurality of bottom members are stacked one above the other for reinforcement. By providing the ribs, the bottom members can be easily separated from each other, and the bottom members can be smoothly supplied when the light-shielding bottle is manufactured.

  As described above, the light-shielding bottle according to the present invention is suitable for recycling the bottle body because the bottle body is made of transparent plastic, and when the bottle body expands, the grounding protrusion on the bottom of the bottle body However, the cup-shaped bottom member does not come off in the horizontal direction with respect to the bottle body.

Hereinafter, an embodiment of a light-shielding bottle according to the present invention will be described with reference to the drawings.
As shown in FIG.1 and FIG.2, the light-shielding bottle 1 in this embodiment is the bottle main body 2 in which various drinks are put, the cup-shaped bottom member 3 covered on the bottom part 20 of this bottle main body 2, and a bottle. A cap 4 screwed into the mouth portion 21 of the main body 2 and a cylindrical label 5 attached to the body portion 22 of the bottle main body 2 are provided. In FIGS. 1 and 2, hatching is omitted. In addition, as beverages, carbonated beverages containing alcohol such as beer, sparkling wine and sparkling wine, various carbonated beverages such as carbonated beverages not containing alcohol represented by carbonated juice, and other beverages containing milk and vitamins, etc. Such as beverages that do not contain carbonic acid. The bottle main body 2 has a diameter of about 68 mm and a height of about 210 mm, for example, and the bottom member 3 has a diameter of about 66 mm and a height of about 10 mm, for example.

  The bottle body 2 is made of plastic typified by polyethylene terephthalate (PET) and is colorless and transparent without containing a colorant. For example, the bottle body 2 has a cylindrical shape with a circular cross section. For example, the body 22 has a thickness of about 0.3 mm and the bottom 20 has a thickness of about 0.45 mm. . A grounding projection 25 projects downward from the bottom portion 20 covered with the bottom member 3, and the grounding projection 25 is a grounding portion of the bottle body 2 itself. The grounding protrusion 25 is provided around the axis A of the bottle body 2. That is, the grounding protrusion 25 is annular. However, the grounding protrusion 25 does not have to be annular like a so-called petaloid shape. And although the front-end | tip of the protrusion 25 for earthing | grounding is formed in arc shape, it may not be arc-shaped, for example, what has a flat part at the front-end | tip shape etc. may be sufficient. In addition, a concave portion 26 that is recessed inward (upward) of the bottle main body 2 is formed on the inner side of the grounding protrusion 25 (center side of the bottle main body 2). The concave portion 26 includes a flat portion 26a formed at the center and an inner inclined portion 26b that is formed in an annular shape outside the flat portion 26a and gradually goes downward toward the outer side. Note that the outer surface of the inner inclined portion 26b is slightly curved outwardly. Further, an outer inclined portion 27 having a diameter gradually increasing toward the trunk portion 22 is formed on the outer side of the grounding protrusion 25, and the outer surface of the outer inclined portion 27 is also curved slightly outwardly.

  The bottom member 3 that covers the bottom 20 of the bottle main body 2 from the lower side is basically a thin cup shape along the bottom 20 of the bottle main body 2 because of the configuration that covers the bottom 20 of the bottle main body 2. Since the main body 2 is cylindrical, the bottom member 3 is also circular in plan view. The shape of the bottom member 3 is designed so as not to break the outer shape line of the bottle body 2. Specifically, the bottom member 3 includes a base portion 30 having a ground contact portion on the outer surface, and a side wall portion 31 rising upward from the base portion 30. More specifically, an annular flat surface 32 having a predetermined width is formed on the periphery of the inner surface (upper surface) of the base 30. That is, the flat surface 32 is provided around the side wall portion 31 of the bottom member 3. The flat surface 32 is in contact with the grounding protrusion 25 of the bottle body 2 and serves as a support surface that supports the bottle body 2, and is orthogonal to the axis A of the bottle body 2. Further, a convex portion 33 protruding upward from the flat surface 32 is formed inside the flat surface 32 so as to enter the concave portion 26 in the bottom portion 20 of the bottle body 2. It should be noted that a gap is set between the convex portion 33 and the concave portion 26 of the bottle body 2. The convex portion 33 includes a lower portion 33a that rises obliquely upward from the flat surface 32, and a substantially conical upper portion 33b that has the center of the bottom member 3 as a vertex and has a smaller inclination angle than the lower portion 33a. Then, on the outer surface (lower surface) of the base portion 30 of the bottom member 3, grounding protrusions 34 and 35 are formed in an annular shape at a position below the flat surface 32 as grounding portions of the bottom member 3 itself. The grounding protrusions 34 and 35 are formed in a plurality of, specifically, two coaxially inside and outside as shown in FIG. 4 (a), and the tips of both are formed in an arc shape. However, the tips of the grounding protrusions 34 and 35 do not have to be arc-shaped, and may be, for example, a pan-bottom shape with a flat portion at the tip. Further, the grounding protrusions 34 and 35 are not limited to an annular shape, and may be, for example, a structure in which protrusions are scattered on the circumference or a part of the annular shape is divided. The grounding protrusion 34 inside the bottom member 3 is positioned directly below the grounding protrusion 25 of the bottle body 2. A recess 36 is formed on the outer surface of the base 30 of the bottom member 3 on the inner side of the grounding projections 34, 35 corresponding to the protrusion 33, and a reinforcing rib 37 is provided downward in the recess 36. It protrudes in a cross shape (see FIG. 4). The reinforcing rib 37 protrudes to a height substantially corresponding to the lower end position of the upper portion 33 b of the convex portion 33. The base 30 of the bottom member 3 is formed with a single vent hole 38. Specifically, it is formed at a position close to the center of the bottom member 3 so as to open to the upper portion 33b of the convex portion 33. Yes.

  On the other hand, the side wall portion 31 of the bottom member 3 has a vertical wall portion 311 having a predetermined length (for example, 2 mm or more) that rises substantially vertically from the peripheral edge portion of the base portion 30, and obliquely outward from the upper end of the vertical wall portion 311. It is comprised from the inclination wall part 312 which stands | starts up. The vertical wall portion 311 is not limited to a cylindrical shape, and may be a polygonal cylindrical shape. Further, the inclined wall portion 312 has a shape along the outer inclined portion 27 of the bottle body 2 and is slightly curved outwardly to form a predetermined gap with the outer inclined portion 27 of the bottle body 2. It is set to be. An arc-shaped chamfered portion 39 is formed at the corner between the base portion 30 and the side wall portion 31 of the bottom member 3, and the chamfered portion 39 extends outward from the outer grounding projection 35 described above. Yes.

The bottom member 3 has a light shielding property, so that the material thereof is not particularly limited as long as it has a light shielding property. For example, plastic, metal, paper, wood or the like is used, and particularly, black or red A colored plastic containing a coloring agent such as white or white is preferable, and high-density polyethylene is particularly preferable because of its moderate rigidity and easy separation from the PET of the bottle body 2. The wall thickness is, for example, about 0.8 mm.
The outer diameter of the bottom member 3 is smaller than the outer diameter of the body portion 22 of the bottle body 2. That is, the outer periphery of the bottom portion 20 of the bottle body 2 is inclined inwardly downward, the bottom member 3 is positioned at that portion (outer inclined portion 27), and the outer periphery of the bottom member 3 is the body portion 22 of the bottle body 2. It is designed not to go outside. Therefore, the bottom member 3 is not caught when the cylindrical label 5 is attached.

  Further, the cylindrical label 5 attached to the body portion 22 of the bottle body 2 also has a light shielding property, covers the entire body portion 22 of the bottle body 2, and further, the upper end portion of the side wall portion 31 of the bottom member 3. (Inclined wall portion 312) is covered and the bottom member 3 is held so as not to be detached from the bottom portion 20 of the bottle body 2. The cylindrical label 5 is, for example, a shrink label or a stretch label, and a shrink label is particularly preferable. The cylindrical label 5 is provided with a light shielding property by printing a light shielding ink such as black, red or white on one side of a transparent film, for example. The upper end portion of the cylindrical label 5 reaches the cap 4. Further, the cylindrical label 5 includes not only the cylindrical label before being attached to the bottle main body 2 but also a cylindrical label when a single wafer is attached to the bottle main body 2. The cylindrical label 5 is preferably formed with a separating portion such as a perforation so as to be easily separated from the bottle body 2.

  In addition, as shown in FIG. 3, predetermined gaps a, b, c, d, e, f, g, h, i are formed at various places between the bottom 20 of the bottle body 2 and the bottom member 3. Examples of dimensions when the bottle body 2 expands are 0.1 mm (stored at 30 ° C. for 60 minutes), 0.37 mm (stored at 30 ° C. for 60 minutes), 1.53 mm (stored at 25 ° C. for 10 minutes), 0 .99mm (25 ° C room temperature storage for 10 minutes), 0.43mm (30 ° C storage for 60 minutes), 0.28mm (30 ° C storage for 60 minutes), 0.1mm (30 ° C storage for 60 minutes), 0.46mm (30 ° C 60 minutes storage) and 2.8 mm (30 ° C. 60 minutes storage). The parenthesized items are storage conditions. In FIG. 3, hatching is omitted.

  The light-shielding bottle 1 configured as described above is manufactured, for example, as follows. That is, after filling the bottle body 2 with a beverage and sealing the mouth 21 with the cap 4, the bottom body 3 is placed on the bottom 20 of the bottle body 2 so that the bottle body 2 is placed on the upper side of the bottom member 3. After that, the tubular label 5 made of a shrink label is covered from above, and the tubular label 5 is thermally contracted by passing through a shrink tunnel in a steam atmosphere, and the barrel 22 of the bottle body 2 is attached to the tubular label 5. And the bottom member 3 is held on the bottom portion 20 of the bottle body 2 by utilizing the contraction force of the cylindrical label 5. Since the vent hole 38 is formed in the bottom member 3, even if water remains between the bottom member 3 and the bottle body 2, water is drained from the vent hole 38 or evaporated water is removed. It can be discharged to the outside through the vent hole 38, and the occurrence of mold or the like on the inner surface of the bottom member 3 or the bottom portion 20 of the bottle body 2 can be prevented.

  And in such a light-shielding bottle 1, since the bottle main body 2 is made of a transparent plastic by giving the cylindrical label 5 and the bottom member 3 light-shielding properties, the bottle main body 2 can be easily recycled. There are advantages.

  Further, since the bottom member 3 has a cup shape instead of a flat plate shape, the side wall portion 31 can easily prevent the horizontal displacement of the bottom member 3 with respect to the bottle body 2. Moreover, since the convex portion 33 that enters the concave portion 26 of the bottom portion 20 of the bottle main body 2 is formed on the inner surface of the bottom member 3, the horizontal displacement with respect to the bottle main body 2 due to the interaction between the convex portion 33 and the side wall portion 31. Is effectively suppressed. And since it is the structure which hold | maintains the bottom member 3 with the cylindrical label 5, there exists an advantage that the separate means to hold | maintain the bottom member 3 in the bottle main body 2 becomes unnecessary, and also the upper end of the side wall part 31 of the bottom member 3 Since the boundary portion between the portion and the bottle body 2 is covered with the cylindrical label 5, there is no possibility that light enters from the boundary portion. That is, since the bottom member 3 and the cylindrical label 5 are integrated to cover and wrap the bottle main body 2, a reliable light shielding property is obtained.

  On the other hand, since the bottle main body 2 is made of plastic, the bottle main body 2 may expand greatly depending on storage conditions, which is remarkable when a beverage containing carbon dioxide gas is added. In this case, if the inner surface of the bottom member 3 has a concave shape matching the grounding projection 25 of the bottom 20 of the bottle body 2, the grounding projection 25 of the bottom 20 of the bottle body 2 is not only downward but also horizontal. The bottom member 3 is easily detached from the bottom portion 20 of the bottle body 2 by being deformed and moved in the direction (radial direction). However, since the portion that supports the grounding protrusion 25 of the bottle body 2 is the flat surface 32 as in the present embodiment, even if the grounding protrusion 25 moves in the horizontal direction due to the expansion of the bottle body 2, the grounding protrusion 25 only slides on the flat surface 32, and the bottom member 3 does not come off from the bottle body 2. Moreover, since the tip of the grounding projection 25 of the bottle body 2 is arcuate, it can move smoothly on the flat surface 32.

  In addition, since two grounding protrusions 34 and 35 are formed on the outer surface of the bottom member 3 at a position below the flat surface 32, the weight of the bottle body 2 acting on the flat surface 32 is used for two grounding purposes. The protrusions 34 and 35 can be reliably supported. Since the grounding protrusions 34 and 35 of the bottom member 3 are formed below the flat surface 32, the grounding protrusions 34 and 35 of the bottom member 3 are displaced in the horizontal direction with respect to the flat surface 32. As a result of suppressing the deformation of the bottom member 3 as compared with the case where the light shielding bottle 1 is standing, the standing state of the light blocking bottle 1 is stabilized. In particular, since the inner grounding protrusion 34 is positioned immediately below the grounding protrusion 25 of the bottle body 2, the bottom member 3 is hardly deformed by the weight of the bottle body 2, and the weight of the bottle body 2 is light-shielding. Directly transmitted to the installation location B of the bottle 1, the posture of the light-shielding bottle 1 is stabilized. Further, since the outer grounding projection 35 is further provided outside the inner grounding projection 34, the stability of the light-shielding bottle 1 is increased. In particular, the stability at the time of conveyance by the belt conveyor is excellent. There is an advantage of being. In addition, since the tips of the grounding protrusions 34 and 35 of the bottom member 3 are arcuate, there is an advantage that they can be smoothly conveyed with little catching. At the time of such conveyance, since the arc-shaped chamfered portion 39 is provided at the corner between the base portion 30 and the side wall portion 31 of the bottom member 3, it can be reliably conveyed without falling down.

  Further, in the manufacturing process of the light-shielding bottle 1, the reinforcing ribs 37 facilitate separation from each other when the bottom members 3 are overlapped with each other. Further, by forming the reinforcing rib 37, the rigidity of the bottom member 3 is increased. In particular, since the cross member is formed in a cross shape, there is an advantage that the strength against twisting is increased and the deformation of the bottom member 3 is small. Moreover, since the vertical wall portion 311 having a predetermined length is provided on the side wall portion 31, the guide member in the parts feeder can push the vertical wall portion 311 in the horizontal direction, thereby preventing the bottom member 3 from being lifted. Thus, the bottom member 3 can be reliably delivered to other places.

  Various modifications can be made to the shape of the bottom member 3. For example, in this embodiment, two grounding protrusions 25 of the bottom member 3 are formed inside and outside, but may be one or three or more conversely. In the case of a single unit, it is possible to stabilize the posture by forming it directly under the grounding projection 25 of the bottle body 2 like the inner grounding projection 25.

  Further, as shown in FIGS. 5 and 6, the reinforcing rib 37 may be formed on the inner surface side of the bottom member 3, or the vertical wall portion 311 may be formed on the upper end portion of the side wall portion 31. Note that hatching is omitted in FIGS. 5 and 6B. In the bottom member 3, one grounding protrusion 41 of the bottom member 3 is formed in a ring shape at a position below the flat surface 32. When the vertical wall portion 311 is formed at the upper end portion of the side wall portion 31, the gap between the side wall portion 31 and the bottom portion 20 of the bottle body 2 tends to increase, so that the upper end portion of the side wall portion 31 as shown in FIG. It is preferable that the vertical ribs 40 extending in the vertical direction are formed on the inner surface side of the steel plate at intervals in the circumferential direction. Also, the cross-shaped reinforcing ribs 37 formed on the inner surface or the outer surface may be formed in a cross shape, or only one or a plurality of radial ribs may be formed radially. In FIG. 5, the outer side portion of the grounding protrusion 41 is the side wall portion 31, but the outer surface of the side wall portion 31 is also curved slightly outwardly so that it is smoothly transported (running) during transport. Can be made.

  Furthermore, the shape and the like of the bottom 20 of the bottle body 2 can be changed as appropriate, and the cross section has a circular shape, but it may have a rectangular cross section. 3 is also rectangular in plan view accordingly.

Sectional drawing which shows the light-shielding bottle which concerns on one Embodiment of this invention. The principal part expanded sectional view of FIG. Sectional drawing which shows the state of the clearance gap between the bottle main body and bottom member in the light-shielding bottle. The bottom member used for the same light-shielding bottle is shown, (A) is a bottom view, and (B) is a cross-sectional view. The principal part expanded sectional view of the light-shielding bottle which concerns on other embodiment. The bottom member used for the same light-shielding bottle is shown, (A) is a plan view, and (B) is a sectional view.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Light-shielding bottle, 2 ... Bottle main body, 3 ... Bottom member, 4 ... Cap, 5 ... Cylindrical label, 20 ... Bottom part, 21 ... Mouth part, 22 ... Body part, 25 ... Protrusion for grounding of a bottle main body, 26 ... concave portion, 26a ... flat portion, 26b ... inner inclined portion, 27 ... outer inclined portion, 30 ... base portion, 31 ... side wall portion, 32 ... flat surface, 33 ... convex portion, 33a ... lower portion, 33b ... upper portion, 34 , 35, 41 ... grounding protrusions of the bottom member, 36 ... recesses, 37 ... reinforcing ribs, 38 ... vent holes, 39 ... chamfered parts, 40 ... vertical ribs, 311 ... vertical wall parts, 312 ... inclined wall parts, A ... Axis, B ... Location of light-shielding bottle

Claims (6)

  A light-shielding bottle, comprising: a transparent plastic bottle body whose body is covered with a light-shielding cylindrical label; and a light-shielding cup-shaped bottom member that covers the bottom of the bottle body The cylindrical label covers the upper end of the bottom member so that the bottom member is held at the bottom of the bottle body, and the bottom of the bottle body is directed downward so that the grounding protrusion is the grounding portion of the bottle body. A light-shielding bottle, characterized in that a flat surface is formed on the inner surface of the bottom member so as to support a grounding protrusion of the bottle body.   The light-shielding bottle according to claim 1, wherein a grounding protrusion projects downward from an outer surface of the bottom member at a position below the flat surface so as to be a grounding portion of the bottom member.   The light-shielding bottle according to claim 1 or 2, wherein a vertical wall portion having a predetermined length is provided on a side wall portion of the bottom member.   On the bottom of the bottle body, a recess recessed inwardly of the bottle body is formed inside the grounding projection, and the flat surface of the bottom member is provided around the side wall portion of the bottom member, and inside the flat surface. The light-shielding bottle according to any one of claims 1 to 3, wherein a convex portion protruding upward from the flat surface is formed so as to enter the concave portion of the bottle body.   The light-shielding bottle according to claim 1, wherein a ventilation hole is formed in the bottom member.   The light-shielding bottle according to claim 1, wherein reinforcing ribs are provided on an inner surface or an outer surface of the bottom member.

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