JP6700681B2 - Resin container - Google Patents

Description

  The present invention relates to a resin container having a container body formed of synthetic resin.

  BACKGROUND ART Synthetic resin containers represented by PET bottles (hereinafter also referred to as resin containers) are widely used for various purposes because they are relatively lightweight. Such a resin container is composed of, for example, a container body formed of a synthetic resin so as to form an internal space for accommodating an article, and a lid body closing an opening formed in the container body. ing. As a result, it is possible to take out and put in an article (for example, a fluid or powder having fluidity) contained in the internal space through the opening.

  In recent years, there has been a demand for resource saving and cost reduction even in the above-mentioned resin container, and the container main body has been made thin in order to satisfy such demand. However, the thinness of the container body reduces the rigidity of the container body, and the container body is likely to be deformed. For this reason, by providing a concave portion or a groove portion in the container body, it is configured to prevent the rigidity of the container body from being reduced due to thinning, and to prevent the container body from being easily deformed (see Patent Documents 1 to 4).

  By the way, a label on which product information or a pattern is printed may be wrapped around the container body as described above in a state where the container body is filled with the contents and the lid is attached. For example, a label may be tightly wound around a tubular body provided in a container body over the entire area in the circumferential direction around the axis of the body. In such a case, it is necessary to use a label corresponding to the circumferential dimension of the body (hereinafter also referred to as the outer circumferential dimension). For example, it is necessary to use a label formed such that the length of the strip-shaped label and the inner peripheral dimension of the annular label correspond to the outer peripheral dimension of the body.

JP, 2003-226317, A JP, 2011-105323, A JP, 2007-284125, A JP, 2014-108813, A

  However, if a flat portion (non-curved portion) is provided on the body portion that constitutes the container body, the flat portion may be deformed so as to bend (bulge) toward the outside of the container body. is there. For example, when the container body is filled with contents by a constant water level method (particularly the gravity method), when the contents are filled with the container body, the internal pressure of the container body causes the flat portion to bulge. There is. In addition, when the belt-shaped label is wrapped around the body with the container body filled with the contents and the lid attached, the container is made along the axial direction of the body for the purpose of stabilizing the resin container. In some cases, the resin container may be pressed. In such a case, the force for pressing the resin container may be applied to the flat portion and the flat portion may be deformed so as to bulge.

  When the above-described deformation occurs in the flat portion, the outer peripheral dimension of the body portion at the position including the flat portion becomes larger than that before the deformation of the flat portion. Therefore, when the label formed to correspond to the outer peripheral dimension before deformation is wrapped around the body portion, the label dimension does not correspond to the outer peripheral dimension of the body portion, which makes it difficult to wind the label. .

  Further, since the flat portion returns to the state before the deformation by removing the force that has deformed the flat portion, when the label is wrapped around the body portion in the deformed (bulged) flat portion, the flat portion is deformed. When the sheet returns to the state before the deformation, an unintended gap may be formed between the body and the label (that is, the state in which the label and the label do not come into close contact with each other). Such a gap not only deteriorates the design of the resin container when the label is wrapped around it, but also causes the label to be unintentionally detached from the container body. Therefore, when the flat portion is deformed (bulged), the label cannot be properly wound around the body portion.

  Therefore, it is an object of the present invention to provide a resin container that can appropriately wind a label around a container body by suppressing deformation of a flat portion of the container body.

The resin container according to the present invention includes a resin container body having a tubular portion formed in a tubular shape and around which a label is wound, and a bottom portion closing one end portion in the axial direction of the tubular portion, and having a tubular shape. The part is a resin container having a flat part in a region covered by the label, and is provided with a concave part formed so as to surround a predetermined region inside the flat part.

  According to such a configuration, since the recess is formed so as to surround the predetermined area in the flat portion, the label can be appropriately wound when the label is wound around the tubular portion so as to cover the flat portion. .

  Specifically, since the recess is formed so as to surround a predetermined region in the flat portion, the rigidity of the flat portion is higher than that in the case where the flat portion does not include the recess. Therefore, it is possible to prevent the flat portion from being deformed such that the flat portion bulges toward the outside of the container body due to the external force applied to the container body. As a result, the circumferential dimension of the tubular portion including the flat portion (hereinafter, also referred to as the outer circumferential dimension) does not change before and after the external force is applied to the container body, and thus is formed to correspond to the outer circumferential dimension of the tubular portion. The label can be appropriately (closely) wrapped around the tubular portion.

  It is preferable that the recess includes a groove-shaped first recess extending in one direction and a groove-shaped second recess extending in the other direction that intersects the one direction.

  It is preferable that the recesses include a plurality of first recesses and a plurality of second recesses formed in a grid pattern.

  According to such a configuration, the concave portion is composed of a groove-shaped first concave portion extending in one direction and a groove-shaped second concave portion extending in the other direction intersecting the one direction, and the first concave portion and the first concave portion. Since the two concave portions are formed in a lattice shape, the deformation of the flat portion can be suppressed more effectively. This makes it possible to wind the label around the container body more preferably.

The tubular portion is a rib-shaped portion formed over the entire area in the circumferential direction around the axis, and is formed on both axial end sides of the rib-shaped portion and is outside the container body with respect to the rib-shaped portion. The flat portion is formed along at least one of the bulging portion and the rib-like portion and is formed along the axis of the tubular portion .

  According to such a configuration, since the flat portion is formed between at least one bulging portion and the rib-like portion, it is easier to deform (bulge) than when it is formed at another position. By providing the flat portion with the concave portion, the flat portion is more effectively prevented from being deformed so as to bulge toward the outside of the container body. This makes it possible to wind the label around the container body more preferably.

  The rib-shaped portion is formed of a plurality of convex portions that are formed annularly in the circumferential direction of the tubular portion and are spaced apart in the axial direction of the tubular portion. A first region in which one surface is in contact with an internal space formed inside the grooved portion, and an inner space side in the first region that extends from one end of the first region to one surface side of the first region And a second groove formed outside the projection area, and extending in one direction and a first groove formed in the first area and extending in the other direction intersecting the one direction. And a second groove portion formed so that the second groove portion is continuous from the inside of the first region to the inside of the second region so as to overlap with an imaginary line intersecting the first groove portion in the first region. It is preferable that a plurality of layers are formed at a time and are spaced apart in one direction.

  As described above, according to the present invention, it is possible to preferably wind the label around the container body by suppressing the deformation of the flat portion of the container body.

(A) is a front view of the container main body which comprises the resin-made container which concerns on one Embodiment of this invention, (b) is a rear view of the same container main body. (A) is a top view of the same container main body, (b) is a bottom view of the same container main body. (A) is a right side view of the same container main body, (b) is a left side view of the same container main body. The end view in the AA cross section of Fig.1 (a). The expanded end view in the BB cross section of Fig.1 (a). The expanded end view in the CC cross section of Fig.1 (a). 4A is an enlarged view of a DD area in FIG. 4, and FIG. 4B is an enlarged view of an EE area in FIG. (A) is the front view which showed one Embodiment of the resin container which concerns on this invention, (b) is a side view in the same embodiment. (A) is sectional drawing of the convex-shaped part in the same embodiment, (b) is the top view which showed a part of convex-shaped part in the same embodiment. FIG. 6A is a plan view showing the shape of a recess provided in one flat portion in the same embodiment, and FIG. 6B is a plan view showing the shape of a recess provided in the other flat portion in the same embodiment. FIG. 9A is a plan view showing a shape of a recess provided in a flat portion in another embodiment, and FIG. 9B is a plan view showing a shape of a recess provided in a flat portion in another embodiment. FIG. 9A is a plan view showing the shape of a recess provided in a flat portion in still another embodiment, and FIG. 9B is a plan view showing the shape of a recess provided in a flat portion in yet another embodiment.

  An embodiment of the present invention will be described below with reference to FIGS.

  As shown in FIGS. 1 to 7, the resin container 1 according to the present embodiment includes a container body 2 formed of a synthetic resin so as to form an internal space R for accommodating an article. It is configured by attaching a lid (not shown) to the. The article contained in the container body 2 is not particularly limited, and has fluidity such as liquid or powder (for example, drinking water, tea, fruit juice, coffee, cocoa, soft drink, alcoholic beverage). , Milk drink, soup, sauce, soy sauce, salt, pepper, mayonnaise, ketchup, etc.).

  Further, the internal volume of the resin container 1 (container body 2) is not particularly limited and can be appropriately selected depending on the type of articles to be stored, and is relatively small from several milliliter units to several hundred milliliter units. From a small volume to a relatively large volume of several liters (specifically, 1 liter to 2 liters) can be mentioned.

  The container body 2 is made of synthetic resin. The synthetic resin is not particularly limited, and examples thereof include those containing a thermoplastic resin such as polyethylene, polypropylene or polyethylene terephthalate as a main material. The method for molding the container body 2 is not particularly limited, and a known molding method such as a biaxial stretch blow molding method can be used, for example. The lid may be made of the same synthetic resin as the container body 2 or may be made of a different material.

  In the following description, the recess 2f (the recess 2f will be described later) included in the container body 2 is simply described as a linear shape in FIG. Further, the first groove portion 2k and the second groove portion 2m (the first groove portion 2k and the second groove portion 2m will be described later) included in the container body 2 are simply described linearly in FIG.

  As shown in FIGS. 8A and 8B, the container body 2 closes a tubular portion 2a formed in a tubular shape and one end of the tubular portion 2a in the direction of the axis (virtual line) L1. And a bottom portion 2b formed in the. Then, the internal space R is constituted by the space surrounded by the tubular portion 2a and the bottom portion 2b.

  The tubular portion 2a is formed so as to form an opening communicating with the internal space R and a neck portion 2c formed at the other end portion in the direction of the axis L1 and to widen from the neck portion 2c toward the bottom portion 2b. And a body portion 2e formed from the shoulder portion 2d toward the bottom portion 2b and connected to the bottom portion 2b. The neck portion 2c is configured so that a lid can be attached (specifically, screwable). Further, the internal space R is configured to be sealed in a state where the lid body is attached to the neck portion 2c (specifically, screwed).

  The body 2e is configured such that a cross section orthogonal to the direction of the axis L1 has a quadrangular shape (specifically, a rectangular shape). Further, the body portion 2e includes a pair of side wall portions 21a forming a pair of long side portions in the rectangular cross section, and a pair of side wall portions 22a forming a pair of short side portions in the rectangular cross section. To be done. That is, the pair of side wall portions 21a are formed to face each other, and the other pair of side wall portions 22a are also formed to face each other.

  Further, the body portion 2e bulges outward from the container body 2 (cylindrical portion 2a) beyond the rib portion 21e formed over the entire area in the circumferential direction centering on the axis L1. The bulging portion 22e formed so as to have a flat shape and the flat portion 23e formed without being curved to the outside of the container body 2 (specifically, along the axis L1).

  The rib-shaped portion 21e is formed at the center of the body portion 2e in the direction of the axis L1. The rib-shaped portion 21e is composed of a plurality of convex portions 24e formed at intervals in the direction of the axis L1. Each convex portion 24e is formed continuously (that is, in an annular shape) over the entire circumference of the body portion 2e with the axis L1 as the center.

  Further, as shown in FIG. 9A, the convex portion 24e has a first region 2g whose one surface is in contact with the internal space R and one surface of the first region 2g from the end of the first region 2g. And a second region 2h extending toward the side (that is, the surface side in contact with the internal space R). Specifically, the convex portion 24e extends from each of the first region 2g and the opposing end portions of the first region 2g (specifically, the opposing end portions in the direction of the axis L1). It is composed of the second area 2h.

  The second region 2h is formed outside the projection region of the first region 2g toward the internal space R side. In addition, the pair of second regions 2h are formed such that the distance therebetween increases as the distance from the first region 2g to the internal space R side increases. The second region 2h is formed on the side of the first region 2g and is connected to the end of the first region 2g, and the inside of the shoulder region 2i is formed on the inner space R side of the shoulder region 2i. It is composed of the space side area 2j. The shoulder region 2i is formed so as to bulge (curve) toward the outside of the container body 2. On the other hand, the internal space side region 2j is formed in a flat plate shape.

  Returning to FIG. 8, as shown in FIG. 8B, the convex portion 24e includes the first groove portion 2k extending in one direction (specifically, the direction intersecting the axis L1) and the one direction. The second groove portion 2m formed (specifically, along the axis L1) extending in the other direction (specifically, the direction intersecting the longitudinal direction of the first groove portion 2k). In the present embodiment, the first groove portion 2k and the second groove portion 2m are formed in the region that constitutes the convex portion 24e in the other pair of side wall portions 22a.

  When the container body 2 is placed on a flat surface such that the direction of the axis L1 is the vertical direction, the first groove portions 2k are arranged so as to intersect (specifically, orthogonal) to the vertical direction. Then, the second groove portion 2m is arranged along the vertical direction. Therefore, in the following description, the first groove portion 2k is described as the lateral groove 2k, and the second groove portion 2m is described as the vertical groove 2m.

  The lateral groove 2k is formed linearly in the first region 2g. The length of the lateral groove 2k is not particularly limited, but in the present embodiment, the lateral groove 2k has a length that fits in a region visually recognized when the container body 2 is viewed from a direction orthogonal to the axis L1. .

  On the other hand, the vertical groove 2m is, as shown in FIG. 9B, an imaginary line L2 that extends in the other direction that intersects with the one direction (specifically, intersects perpendicularly) (ie, along the axis L1). It is formed so as to overlap. The virtual line L2 is set so as to intersect the lateral groove 2k in the first region 2g. The vertical groove 2m is continuously formed from the inside of the first region 2g to the inside of the second region 2h. That is, the vertical groove 2m is formed so as to cross the connection position between the first region 2g and the second region 2h along the other direction. In the present embodiment, the vertical groove 2m is formed so as to cross the shoulder region 2i along the imaginary line L2 (that is, along the other direction).

  The vertical groove 2m formed on one virtual line L2 is continuously formed from the inside of the first region 2g to the inside of each of the pair of second regions 2h. Specifically, the vertical groove 2m is continuously formed so as to cross the first region 2g from the inside of the one second region 2h to the inside of the other second region 2h. Thereby, the vertical groove 2m is configured to intersect the horizontal groove 2k in the first region 2g. In addition, a plurality of vertical grooves 2m are formed at intervals in one direction (specifically, the longitudinal direction of the horizontal groove 2k). That is, in the present embodiment, a plurality of vertical grooves 2m intersects one horizontal groove 2k.

  Returning to FIG. 8, as shown in FIGS. 8A and 8B, a pair of bulging portions 22e is formed at both ends of the body portion 2e in the direction of the axis L1. A rib-shaped portion 21e and a flat portion 23e are formed between the pair of bulging portions 22e. The bulging portion 22e is formed so as to bulge outward of the body portion 2e rather than the rib-shaped portion 21e and the flat portion 23e. Accordingly, when the label (not shown) is wound around the tubular portion 2a so as to cover the region (that is, the rib-shaped portion 21e and the flat portion 23e) between the pair of bulged portions 22e, in the direction of the axis L1. Since the label is locked by the pair of bulging portions 22e, the label is prevented from shifting in the direction of the axis L1.

  The flat portion 23e is formed between the rib-shaped portion 21e and the bulging portion 22e. In the present embodiment, a pair of flat portions 23e is formed between the rib-shaped portion 21e and the pair of bulging portions 22e. Specifically, one flat portion 23e is formed between the one bulge portion 22e formed on the neck portion 2c side of the container body 2 and the rib-like portion 21e, and is formed on the bottom portion 2b side of the container body 2. The other flat portion 23e is formed between the bulging portion 22e and the rib-like portion 21e. The flat portion 23e is formed on the one pair of side wall portions 21a forming the body portion 2e.

  Further, the flat portion 23e includes a recess 2f formed so as to surround a predetermined region inside the flat portion 23e. The recess 2f is provided in each of the pair of flat portions 23e. In addition, as shown in FIGS. 10A and 10B, the recess 2f formed in each flat portion 23e has a groove-shaped first portion extending in one direction (specifically, a direction intersecting the axis L1). It is composed of one recess 21f and a groove-shaped second recess 22f extending in the other direction (specifically, the direction along the axis L1) intersecting the one direction.

  The first concave portion 21f and the second concave portion 22f of the flat portion 23e (specifically, formed on the neck portion 2c side of the container body 2) are formed to intersect with each other. Specifically, the plurality of first recesses 21f and the plurality of second recesses 22f are formed so as to intersect with each other (that is, in a grid pattern). In the present embodiment, the two first recesses 21f formed at intervals in the axis L1 direction and the four second recesses 22f formed at intervals in the direction orthogonal to the axis L1 intersect. (That is, in a grid pattern).

  Specifically, one of the first concave portions 21f (specifically, formed on the bottom portion 2b side of the container body 2) is configured to intersect the four second concave portions 22f at positions inside both end portions. To be done. The other (specifically, the first recess 21f formed on the side of the neck 2c of the container body 2) intersects the two second recesses 22f at the positions of both ends and is located inside the both ends. Are configured to intersect with the other two second recesses 22f.

  Each second recess 22f is configured to intersect with the one first recess 21f at a position inside both ends. Also, the two outer second recesses 22f of the four second recesses 22f intersect the other first recess 21f at the position of one end, and the two inner second recesses 22f are located at both ends. Is also configured to intersect the other first recess 21f at the inner position.

  As shown in FIG. 10(b), the first recess 21f and the second recess 22f provided on the other flat portion 23e (specifically, formed on the bottom 2b side of the container body 2) are arranged to intersect with each other. It is formed. Specifically, the plurality of first recesses 21f and the plurality of second recesses 22f are formed so as to intersect with each other (that is, in a grid pattern). In the present embodiment, the two first recesses 21f formed at intervals in the direction of the axis L1 intersect the three second recesses 22f formed at intervals in the direction orthogonal to the axis L1. (That is, in a grid pattern).

  Specifically, one first concave portion 21f (specifically, formed on the bottom portion 2b side of the container body 2) intersects with two adjacent second concave portions 22f at positions inside both ends. Is composed of. Further, the other (specifically, the first recess 21f formed on the neck 2c side of the container body 2) is configured so as to intersect each second recess 22f at a position inside both ends.

  Further, each second recess 22f is configured to intersect with the other first recess 21f at a position inside both ends. Further, one of the two adjacent second concave portions 22f is configured to intersect with the one first concave portion 21f at a position inside both end portions, and the other of the adjacent two second concave portions 22f is formed. , The one first recess 21f is crossed at one end position. Further, one second recess 22f other than the two adjacent second recesses 22f is configured not to intersect with the one first recess 21f.

  Since the flat portion 23e is provided with the concave portion 2f as described above, a region surrounded by the concave portion 2f (specifically, a region surrounded by the first concave portion 21f and the second concave portion 22f) is provided in the flat portion 23e. ) (Hereinafter, also referred to as a surrounding area) is formed. Specifically, in one of the flat portions 23e (specifically, formed on the neck portion 2c side of the container body 2), as shown in FIG. A surrounding area A1 surrounded by two second concave portions 22f adjacent to each other and an surrounding area surrounded by one first concave portion 21f and two second concave portions 22f adjacent to each other (that is, partially surrounded by the concave portion 2f). Enclosed region) (more specifically, a U-shaped or U-shaped region) A2 is formed.

  Further, in the other flat portion 23e, a surrounding area A1 surrounded by two adjacent first concave portions 21f and two adjacent second concave portions 22f, and two first adjacent concave portions 21f. A surrounding area surrounded by the two recesses 22f (that is, an area partially surrounded by the recess 2f) (more specifically, a U-shaped or U-shaped area) A2 and two first recesses 21f An enclosing region (that is, a region partially surrounded by the recess 2f) (more specifically, a U-shaped or U-shaped region) A3 surrounded by the two second recesses 22f is formed. The total area of the surrounding areas A1 and A2 (or the total area of the surrounding areas A1, A2, and A3) is 30% or more and 80% or less with respect to the entire area of one (or the other) flat portion 23e. Is preferable and 50% or more and 70% or less is preferable.

  As described above, in the resin container according to the present invention, it is possible to preferably wind the label around the container body by suppressing the deformation of the flat portion of the container body.

  That is, since the recess 2f is formed so as to surround a predetermined area of the flat portion 23e, the label can be preferably wrapped when the label (not shown) is wound around the tubular portion 2a so as to cover the flat portion 23e. It can be carried out.

  Specifically, since the recess 2f is formed so as to surround a predetermined region of the flat portion 23e, the rigidity of the flat portion 23e becomes higher than that when the flat portion 23e does not include the recess 2f. Therefore, it is possible to prevent the container body 2 from being deformed such that the flat portion 23e bulges toward the outside of the container body 2 due to an external force applied thereto. As a result, the circumferential dimension of the tubular portion 2a including the flat portion 23e (hereinafter also referred to as the outer circumferential dimension) does not change before and after an external force is applied to the container body 2, and therefore corresponds to the outer circumferential dimension of the tubular portion 2a. The label thus formed can be preferably (closely) wrapped around the tubular portion 2a.

  Further, since the flat portion 23e is prevented from being deformed such that the flat portion 23e is swollen, it is possible to prevent the container body 2 from being filled with an amount exceeding a predetermined amount (that is, to prevent overfilling). )be able to. As a result, it is possible to prevent the article (particularly, the liquid article) in the container body 2 from being unintentionally blown out from the container body 2 (in particular, the blowout after the filling by the gravity method).

  The recess 2f is composed of a groove-like first recess 21f extending in one direction and a groove-like second recess 22f extending in the other direction intersecting the one direction, and the first recess 21f and the second recess 21f. Since the concave portions 22f and the concave portions 22f are formed in a lattice shape, the deformation of the flat portion 23e is more effectively suppressed. As a result, the label can be more preferably wound around the container body 2.

  Further, since the flat portion 23e is formed between at least one bulging portion 22e and the rib-like portion 21e, the flat portion 23e is more easily deformed (bulged) than when it is formed at another position. By providing the concave portion 2f in the portion 23e, it is possible to more effectively prevent the flat portion 23e from being deformed so as to bulge toward the outside of the container body 2. As a result, the label can be more appropriately wound around the container body 2.

  Further, since the convex portion 24e is configured as described above, when an area (hereinafter, also referred to as a pressing area) including the lateral groove 2k and the plurality of vertical grooves 2m in the convex portion 24e is pressed, The convex portion 24e is deformed toward the internal space R side, but by removing the force by the pressing, the state before the deformation is restored. Therefore, it is possible to prevent the convex portion 24e from being permanently deformed by pressing.

  Specifically, by providing the vertical groove 2m that is continuously formed from the inside of the first region 2g to the inside of the second region 2h, the connecting portion between the first region 2g and the second region 2h is longitudinally formed. The groove 2m crosses along the other direction (specifically, the axis L1). As a result, a portion of the connecting portion between the first region 2g and the second region 2h that overlaps the vertical groove 2m is easily deformed along the vertical groove 2m toward the internal space R side. And. By forming a plurality of such vertical grooves 2m at intervals in one direction (specifically, a direction perpendicular to the axis L1), the convex portion 24e is formed in the other direction (specifically, the axis L1). ) (That is, in the direction along each vertical groove 2m) (i.e., deformation along the imaginary line L2).

  Further, the lateral groove 2k is formed so as to intersect with the virtual line L2 in the first region 2g, so that the convex portion 24e extends along the virtual line L2 (in other words, along each vertical groove 2m). It has rigidity against the deformation toward the internal space R side.

  As described above, since the convex portion 24e has both flexibility and rigidity against deformation along the other direction (specifically, the axis L1), it is pressed even when the pressing region is pressed and deformed. By removing the force due to, the state before deformation will be restored. Thereby, it is possible to prevent the convex portion 24e from being permanently deformed by pressing.

  In addition, the convex portion 24e is configured by the pair of second regions 2h and the first region 2g that extend from each of the opposite ends of the first region 2g in the other direction (specifically, the axis L1 direction). By doing so, the connecting portion of the first region 2g and the second region 2h is located at each of the positions facing each other in the other direction (specifically, the direction of the axis L1). The vertical groove 2m formed on the one virtual line L2 is continuously formed from the inside of the first region 2g to the inside of each of the pair of second regions 2h. The vertical groove 2m crosses each connecting portion with the two regions 2h along the other direction (specifically, the axis L1). As a result, the convex portion 24e is more easily deformed along the vertical groove 2m (specifically, along the axis L1), and thus is more flexible. This makes it easier for the convex portion 24e to return from the state deformed by pressing to the state before the deformation, so that it is possible to more reliably prevent permanent deformation of the convex portion 24e.

  Further, the vertical groove 2m formed on the one virtual line L2 is continuously formed so as to cross the first region 2g from the inside of the one second region 2h to the inside of the other second region 2h. At the same time, since the vertical groove 2m intersects the horizontal groove 2k, the convex portion 24e is more easily deformed along the vertical groove 2m (specifically, along the axis L1), and thus the flexibility is increased. Get higher. Further, since the vertical groove 2m and the horizontal groove 2k intersect with each other, the convex portion 24e has higher rigidity against deformation along the vertical groove 2m. As a result, the convex portion 24e deformed by pressing as described above surely returns to the state before the deformation, so that it is possible to more reliably prevent the permanent deformation of the convex portion 24e.

  The resin container according to the present invention is not limited to the above embodiment, and various modifications can be made without departing from the gist of the present invention. Further, the configurations and methods of the plurality of embodiments described above may be arbitrarily adopted and combined (the configurations and methods according to one embodiment may be applied to the configurations and methods according to other embodiments. Of course, the configurations and methods according to the various modifications described below may be arbitrarily selected and adopted in the configurations and methods according to the above-described embodiments.

  For example, in the above-described embodiment, the groove-shaped first concave portion 21f and the groove-shaped second concave portion 22f are formed so as to intersect with each other. However, the present invention is not limited to this, and for example, FIG. As shown in, the first recess 21f and the second recess 22f may be formed without intersecting each other. In such a case, the surrounding areas A1' and A2' are intermittently surrounded by the first recess 21f and the second recess 22f.

  In addition, in the above-described embodiment, the recesses 2f are formed in a lattice shape, but the present invention is not limited to this. For example, as shown in FIG. Note that the recess 2f′ may be formed by forming 23f so as to intersect. In such a case, the surrounding area A4 surrounded by the annular recess 23f is formed. Alternatively, as shown in FIG. 12A, the recess 2f″ may be formed by forming another annular recess 25f inside one annular recess 24f. In such a case, the enclosing area A5 is formed between the outer annular recess 24f and the inner annular recess 25f, and the enclosing area A6 is also formed inside the inner annular recess 25f. Alternatively, as shown in FIG. 12B, the recess 2f″′ may be formed by being configured so that two recesses 26f formed in a corrugated shape (hereinafter, also referred to as corrugated recesses) 26f intersect. . In such a case, the surrounding area A7 is formed between the two corrugated recesses 26f.

  Further, in the above-described embodiment, the first recess 21f and the second recess 22f are formed in a linear shape, but the invention is not limited to this. For example, either the first recess 21f or the second recess 22f is used. Alternatively, one of them may be formed in a corrugated shape or the like.

  Further, in the above-described embodiment, the resin container 1 is composed of the container body 2 and the lid, but the invention is not limited to this. For example, the resin container is composed of only the container body 2. Good.

  DESCRIPTION OF SYMBOLS 1... Resin container, 2... Container body, 2a... Cylindrical part, 21a, 22a... Side wall part, 2b... Bottom part, 2c... Neck part, 2d... Shoulder part, 2e... Body part, 21e... Rib part, 22e... Bulging portion, 23e... Flat portion, 24e... Convex portion, 2f, 2f', 2f'', 2f'''... Recessed portion, 21f... First recessed portion, 22f... Second recessed portion, 23f, 24f, 25f... Annular shape Recesses, 26f... Corrugated recesses, 2g... First region, 2h... Second region, 2i... Shoulder region, 2j... Inner space side region, 2k... First groove part, 2m... Second groove part, A1, A2, A3. A4, A5, A6, A7... Enclosing area, L1... Axis line, L2... Virtual line, R... Internal space

Claims (4)

A container body made of resin having a tubular portion formed in a tubular shape and around which a label is wound, and a bottom portion closing one end portion in the axial direction of the tubular portion is provided, and the tubular portion is a region covered by the label. A resin container having a flat portion on,
The tubular portion is a rib-shaped portion formed over the entire area in the circumferential direction around the axis, and is formed on both axial end sides of the rib-shaped portion and is outside the container body with respect to the rib-shaped portion. And a pair of bulges that bulge into
The flat portion is formed between at least one of the bulge portion and the ribs Rutotomoni is formed along the axis of the cylindrical portion,
A resin container, comprising: a recess formed so as to surround a predetermined region inside the flat portion.   2. The resin-made product according to claim 1, wherein the recess comprises a groove-shaped first recess extending in one direction and a groove-shaped second recess extending in the other direction intersecting the one direction. container.   The resin container according to claim 2, wherein the recess comprises a plurality of first recesses and a plurality of second recesses formed in a grid pattern. The rib-shaped portion is formed of a plurality of convex portions that are formed annularly in the circumferential direction of the tubular portion and are formed at intervals in the axial direction of the tubular portion,
The convex portion is provided with a first region in which one surface is in contact with an internal space formed inside the tubular portion, and extends from an end portion of the first region to one surface side of the first region. A first groove portion formed in the first region so as to extend in one direction, and a second region formed outside the projection region to the internal space side in the first region, and in one direction And a second groove portion formed so as to extend in the other direction intersecting with each other,
The second groove portion is continuously formed from the inside of the first area to the inside of the second area so as to overlap with an imaginary line intersecting the first groove portion in the first area, and is spaced in one direction. 4. The resin container according to claim 1, wherein a plurality of resin containers are formed.