JP2014080223A - Resin container - Google Patents

Abstract

A resin container having a body formed with a panel formed in a two-dimensional curved surface. Even if a negative pressure is generated inside the container, the resin can be prevented from being dented and the outer film is not likely to be deformed. Providing a container.
A resin container 1 includes an upper part 2 and a body part 3 capable of accommodating contents. The trunk | drum 3 has the several panels 30-33 continuous with the upper part 2, and was connected with the cylinder shape, and the surface along the up-down direction XY is at least the 1st panel 30 among the several panels 30-33. plane along the horizontal direction UV with forming a convex is formed in a curved surface which forms a flat shape, and the first panel 30, a pair of recesses 4 is provided across the center line l ₁ of the left-right direction UV Yes.
[Selection] Figure 1

Description

  The present invention relates to a resin container.

  Conventionally, a resin container is often used as a container for storing contents, and for example, it is used to enclose various contents such as fragrances, beverages and cosmetics. In recent years, in view of cost reduction and environmental problems, this type of resin container is desired to reduce the amount of resin used per container, and therefore, the container is required to be thin. However, since the mechanical strength of the container decreases as the container becomes thinner, there is a problem that the container (particularly the body part in which the contents are stored) is likely to be recessed when a negative pressure is generated inside the container. . In addition, when the body of the container is recessed, an outer film generally describing the product name, product description, etc. is attached to the outer peripheral surface of the body of the container, so that the exterior follows the recess of the body of the container. The film is also dented or distorted, resulting in a large number of wrinkles on the exterior film, and there is a problem that the design of the entire container is greatly impaired.

  In view of this, there has been proposed a resin container having enhanced mechanical strength by forming a reinforcing rib on at least one of a plurality of panels constituting the body (see, for example, Patent Documents 1 and 2).

JP 2010-137897 A JP 2010-137898 A

  However, Patent Documents 1 and 2 are for increasing the mechanical strength of a resin container in which a body panel is formed in a three-dimensional curved surface that is generally convex in the vertical and horizontal directions. Technology. This type of resin container is formed in various shapes depending on the design, for example, one of the vertical and horizontal directions has a convex shape, and the other direction has a flat two-dimensional curved shape. For the resin container having the panel formed in the body part, even if the reinforcing ribs as described in Patent Documents 1 and 2 are formed on the panel, the mechanical strength of the container cannot be sufficiently increased. It is not sufficient to prevent deformation of the exterior film.

  The present invention has been made paying attention to the above-described problems, and a resin container having a panel formed in a two-dimensional curved surface in the trunk portion, even if negative pressure is generated inside the container, the container is recessed. An object of the present invention is to provide a resin container capable of suppressing the deformation of the exterior film.

  The object of the present invention is a resin container comprising an upper part having an opening at the upper end and a bottomed body part capable of accommodating contents, the body part being continuous with the upper part and in a tubular shape. A plurality of panels connected to each other, and at least one of the plurality of panels is formed in a curved shape in which a surface along the vertical direction has a convex shape and a surface along the horizontal direction forms a flat shape. The at least one panel is achieved by a resin container provided with a pair of recesses across the center line in the left-right direction.

  According to the resin container having the above-described configuration, the panel is provided with a pair of recesses with the center line in the left-right direction interposed therebetween, so that the mechanical strength is increased by sandwiching the center region of the panel between both recesses. As described above, the mechanical strength of the panel central region is increased, so that even when a negative pressure is generated in the internal space of the resin container, the panel central region is prevented from being dented by the negative pressure. As a result, when the exterior film is wound around the outer peripheral surface of the body portion, even if a negative pressure is generated inside the container, the panel central region is hardly deformed. Therefore, the exterior film is adjacent to the central region and the panel. Winding is performed while the tension is applied in the circumferential direction by both side edge portions located at the boundary with the panel. Therefore, since the state in which the tension is maintained in the exterior film continues, the exterior film can be prevented from being deformed following the dent of the panel, and the design of the container can be prevented from being impaired.

  The object of the present invention is a resin container comprising an upper part having an opening at the upper end and a bottomed body part capable of accommodating contents, the body part being continuous with the upper part and A plurality of panels connected in a cylindrical shape, and at least one of the plurality of panels is formed in a curved shape in which a surface along a vertical direction forms a convex shape and a surface along a horizontal direction forms a flat shape. The at least one panel is provided with a pair of recesses across the center line in the left-right direction, and a rib portion is provided in the center region of the panel between the side edges of the panel and the recesses. The strength portion is also achieved by the resin container formed.

  According to the resin container having the above-described configuration, the panel is provided with a pair of recesses with the center line in the left-right direction sandwiched therebetween. Therefore, the panel has mechanical strength by being sandwiched between the recesses in the central region. A raised rib portion is provided, and low strength portions having low mechanical strength are provided in both side regions thereof. As described above, when the negative pressure is generated in the internal space of the resin container by arranging the rib portion with increased mechanical strength in the central region of the panel, the low strength portion in the side region of the panel is caused by the negative pressure. While it is easy to dent, the rib part of the panel center area is prevented from being dented by the negative pressure. Thereby, when an exterior film is wound around the outer peripheral surface of the trunk portion, the following effects can be obtained. That is, when the negative pressure is not generated, the exterior film is wound so as to cover the panel, and has an appearance shape along the shape of the panel. On the other hand, when negative pressure is generated inside the container, the low-strength portions in the regions on both sides of the panel are recessed into the internal space, but the rib portion in the center region of the panel is difficult to deform. And the side edges located at the boundary between adjacent panels of the panel are wound in a state in which tension is applied in the circumferential direction. Therefore, even if the low-strength parts on both sides of the panel are recessed, the exterior film is still maintained in tension between the rib part and both side edges of the panel. It can prevent following and deform | transform and can prevent that the design property of a container is impaired. In addition, it is preferable that each recessed part is arrange | positioned left-right symmetrically on both sides of the centerline of the left-right direction of a panel.

  In a preferred embodiment of the present invention, each of the recesses extends obliquely outward with respect to the vertical direction or the vertical direction, and the interval between the recesses at the center position of the at least one panel It is shorter than the length along the said up-down direction.

  According to this embodiment, the rib portion has a substantially columnar shape that is long in the vertical direction, and the mechanical strength is improved. Therefore, the central region of the panel can be reinforced more favorably, and the rib portion is caused by the negative pressure inside the resin container. Indentation can be prevented well.

  In a further preferred aspect of the present invention, each of the recesses is formed in a straight line shape or a curved shape that curves toward the center line side.

  According to this embodiment, each recessed portion exerts reinforcing reinforcement of the rib portion. That is, even if the low-strength portions in the regions on both sides of the panel are deformed due to the negative pressure inside the resinous container, each recess can block the propagation of the deformation in the left-right direction. It is possible to suppress deformation following the deformation.

  In a further preferred embodiment of the present invention, the distance between each of the recesses and the side edges of the at least one panel is longer than the distance between the recesses at the center position of the at least one panel. It is characterized by that.

  When the interval between the concave portions, that is, the lateral width of the substantially columnar rib portion is increased, the mechanical strength of the rib portion is lowered and the rib portion is easily recessed. According to this embodiment, the area of the low-strength part of the panel side area is larger than the area of the rib part of the panel central area sandwiched between the recesses, and the rib part is relative to the entire width of the panel. It becomes a substantially columnar shape with a narrow width. Therefore, the mechanical strength of the ribs is increased, and the low-strength parts on both sides of the panel have a large area and are easily deformed by the negative pressure inside the resin container. As a result, the rib portion is prevented from being deformed by the negative pressure as a result of deformation preferentially over the rib portion.

  In a further preferred aspect of the present invention, the recess is provided in each of the two inner regions obtained by equally dividing the at least one panel into four regions in the left-right direction. According to this embodiment, the area of the low-strength portion in the both side regions of the panel is further ensured.

  In a further preferred embodiment of the present invention, the body portion is formed in a flat shape with a small width on the left and right side surfaces with respect to the front and back surfaces, and the pair of recesses are provided at least on the panel forming the surface. Each of the recesses has a lateral width that is less than or equal to ½ of a lateral width of the four-divided region of the panel.

  According to this embodiment, it is possible to prevent deformation of the exterior film on the surface side of the resin container, which is the front side of a product that is noticeable to the purchaser at the time of store display and emphasizes design, and is thus particularly advantageous. It is.

  According to the resin container of the present invention, even if it has a panel formed in a two-dimensional curved surface in the body portion, it can be suppressed that the container is recessed when negative pressure occurs inside the container, Therefore, it is possible to prevent the outer film from being dented or distorted and thereby causing a large number of wrinkles in the outer film, so that the design of the entire container can be maintained.

1 is a perspective view of a resin container according to an embodiment of the present invention. It is a front view of the resin container of FIG. It is a rear view of the resin container of FIG. It is a top view of the resin container of FIG. It is a bottom view of the resin container of FIG. It is a side view of the resin container of FIG. It is sectional drawing of a 1st panel. It is sectional drawing of the 1st panel when a negative pressure arises inside a container. It is a front view of the resin container concerning other embodiments of the present invention.

  Embodiments of the present invention will be described below with reference to the accompanying drawings. 1-6 has shown the external appearance structure of the resin-made containers 1 which concern on one Embodiment of this invention. In the following description, the XY direction in FIG. 1 (the height direction connecting the neck 20 and the bottom surface of the container 1) is the vertical direction, and the UV direction (the horizontal width direction of the front and back surfaces of the container 1) is the horizontal direction. The ST direction (the lateral width direction of the side surface of the container 1) is referred to as the front-rear direction.

  The resin container 1 of the present embodiment includes an upper part 2 having an opening at the upper end, and a hollow and bottomed body part 3 provided continuously to the upper part 2 and capable of accommodating contents. The resin container 1 is formed of a transparent synthetic resin such as polyethylene terephthalate, polyethylene, or polypropylene, and can be manufactured by a known blow molding such as injection blow molding.

  The upper part 2 has a cylindrical neck part 20 and a shoulder part 21 connecting the neck part 20 and the body part 3. A male screw (not shown) is formed on the upper outer peripheral surface of the neck 20, and the male screw is screwed with a female screw (not shown) formed on the inner peripheral surface of the cap 10. The cap 10 is detachably attached to the neck portion 20, and the upper end opening of the neck portion 20 is opened and closed.

  The shoulder portion 21 has a substantially rectangular shape in plan view and is larger in plan view shape than the neck portion 20, and has a flat upper surface portion 22 that continues from the lower end of the neck portion 20 and a side surface portion that extends downward continuously from the upper surface portion 22. 23 and a step portion 24 connecting the side surface portion 23 and the body portion 3, and a corner between the upper surface portion 22 and the side surface portion 23 is chamfered. The side surface portion 23 is provided with a pair of protrusions 25 extending in the left-right direction UV. The protrusion 25 functions as a fixing means for fixing a cover (not shown) removably attached to the resin container 1 to the resin container 1.

  The body 3 has a substantially rectangular shape in plan view, and is formed in a flat shape in which the lateral width (length in the front-rear direction ST) D2 of the left and right side surfaces is shorter than the lateral width (length in the lateral direction UV) D1 of the front and back surfaces. ing. Accordingly, the resin container 1 can be easily grasped, the design of the resin container 1 can be improved, and a large display area of the exterior film 11 described later can be secured on the front and back surfaces. Moreover, the height (length in the vertical direction XY) H of the body portion 3 is shorter than the lateral width D1 of the front and back surfaces. Thereby, since the height of the resin container 1 is reduced, the depression of the resin container 1 is suppressed when a negative pressure is generated inside the container as compared with the case where the height of the resin container 1 is high. Is possible. The height H of the body 3 is preferably within twice the width D1 of the front and back surfaces.

  The trunk portion 3 includes a plurality of (four) panels 30 to 33 that are continuous with the upper portion 2 and are connected to each other in a cylindrical shape, and the panels 30 to 33 are on the front and back surfaces and both sides of the trunk portion 3. An internal space surrounded by the panels 30 to 33 on the bottom surface 34 of the body 3 is a storage space for contents.

  As shown in FIG. 7, a cylindrical exterior film 11 is wound around the outer peripheral surface of the body portion 3. In addition, in FIG. 7 (and FIG. 8), the exterior film 11 is shown with the dotted line for convenience of explanation. The exterior film 11 is not particularly limited, and a shrinkable film such as a shrink film can be used. The exterior film 11 is wound around the outer peripheral surface of the body portion 3 in a state in which tension is applied in the circumferential direction, and has an external shape that conforms to the shape of the body portion 3 except for the concave portions 4, 40, and 41 described later. Presents.

  On the exterior film 11, information for product explanation that is not necessary to be shown to the purchaser when the product name or the design of the product appellation is printed, or for display at the storefront of the product is displayed. It is printed. In addition, the surface of the body 3 is provided with a display for advertising / promotion such as a product name printed on the exterior film 11 and a design of a product apparel, and is a product that is noticeable to the purchaser at the time of store display. It is the surface of the side used as the front.

  As shown in FIG. 2, the first panel 30 on the front surface side and the second panel 31 on the back surface side of the body portion 3 are arcuate in which both side edge portions 30 c, 30 d, 31 c, 31 d protrude outward in the left-right direction UV. On the other hand, the upper edge portions 30a and 31a connected to the upper portion 2 are formed in a circular arc shape protruding downward, and the lower edge portions 30b and 31b connected to the bottom surface 34 are formed in a straight line shape. ing. Moreover, the 1st panel 30 and the 2nd panel 31 have the following curved surfaces when it sees from the up-and-down left and right side surface. That is, in the first panel 30, the surface along the vertical direction XY is flat as shown in FIG. 6, while the surface along the horizontal direction UV is convex outward as shown in FIG. It is formed in a two-dimensional curved surface shape. The curve in the left-right direction UV is preferably a curve with a radius of curvature of about 50 mm to 150 mm. When the radius of curvature increases beyond the upper limit, the mechanical strength of the first panel 30 and the second panel 31 decreases, and the depth of the recess 4 is increased to ensure the mechanical strength of the rib portion 35 described later. Because it is necessary to do. Further, when the radius of curvature becomes smaller than the lower limit, the first panel 30 and the second panel 31 are strongly curved, and the flat shape of the container is damaged. Note that the curvature in the left-right direction UV of the first panel 30 and the second panel 31 has a substantially constant radius of curvature at any position from the upper edge to the lower edge. In addition, “flat” refers to extending in a straight line, but does not necessarily need to be strictly flat, and allows slight dents and bulges. As shown, the surface along the vertical direction XY is slightly concave inward.

  As shown in FIG. 5, the third panel 32 and the fourth panel 33 on both side surfaces of the body portion 3 include upper edge portions 32 a and 33 a connected to the upper portion 2, and lower edge portions 32 b connected to the bottom surface 34. While 33b is formed in a straight line shape, both side edges 32c, 32d, 33c, and 33d serving as a boundary between the first panel 30 and the second panel 31 are formed in an arc shape that protrudes inward in the front-rear direction. Further, the third panel 32 and the fourth panel 33 have, for example, the following curved surfaces when viewed from the front and back side surfaces. That is, in the third panel 32 and the fourth panel 33, the surface along the vertical direction XY is convex outward as shown in FIG. 2, while the surface along the front-rear direction ST as shown in FIG. Are formed in a two-dimensional curved surface, and the curvature in the vertical direction XY of the third panel 32 and the fourth panel 33 is substantially constant at any position across both side edges. It has become. Note that the third panel 32 and the fourth panel 33 are not necessarily formed in a two-dimensional curved surface shape, and the surface along the front-rear direction ST is also formed in a three-dimensional curved surface shape having a convex shape. May be.

The first panel 30 of the front side of the body portion 3, a pair of recesses 4, 4 with respect to the center line l ₁ in the lateral direction UV are provided symmetrically. Each recess 4 extends in the vertical direction so as to straddle the center line l ₂ of at least the vertical direction XY, as shown in FIG. 7, is concave to the inner space side of the body portion 3, it will be described in more detail, Each concave portion 4 is formed in a substantially V shape in sectional view by two inclined surfaces I1 and I2 toward the internal space of the body portion 3. As a result, the first panel 30 is provided with rib portions 35 whose mechanical strength is increased by being sandwiched between the concave portions 4 in the central region, and the both side regions (the left-right direction of the first panel 30). A low-strength portion 36 having a low mechanical strength is provided between the UV side edges 30c and 30d and the concave portions 4).

  As described above, by arranging the rib portion 35 with increased mechanical strength in the central region of the first panel 30, when a negative pressure is generated in the internal space of the resin container 1, the following effects are obtained. That is, the low-strength portion 36 of the first panel 30 is indented into the internal space by the negative pressure, whereas the rib portion 35 is reinforced by the respective concave portions 4, so that it is recessed by the negative pressure. It is prevented. Thereby, in the 1st panel 30, it is prevented that a deformation | transformation arises in the exterior film 11. FIG. That is, when the negative pressure is not generated, as shown in FIG. 7, the exterior film 11 is wound so as to cover the first panel 30, and has an external shape along the shape of the first panel 30. . On the other hand, even if the negative pressure is generated inside the container and the low-strength portions 36 in the both side regions of the first panel 30 are recessed, the central rib portion 35 is not deformed, and therefore, as shown in FIG. Is a state in which tension is applied in the circumferential direction by the rib portion 35 and both side edge portions 30c and 30d having high mechanical strength located at the boundary between the third panel 32 and the fourth panel 33 of the first panel 30. It is wound as it is. Therefore, even if the low-strength portion 36 is recessed, the exterior film 11 is maintained following the shape of the first panel 30 without being deformed following the recess. Therefore, the exterior film 11 can be prevented from being deformed, and the design can be prevented from being damaged.

  Here, when the depth of each recess 4 is increased, the mechanical strength of the rib portion 35 can be improved. However, when the depth of each recess 4 is increased, problems such as difficulty in molding the container 1 occur. On the other hand, if the depth of each concave portion 4 is too small, the mechanical strength of the rib portion 35 is weakened, and the rib portion 35 is also deformed due to the deformation of the low strength portion 36 when negative pressure is generated inside the container. There is a fear. Accordingly, the curvature radius of the curvature in the left-right direction UV of the first panel 30 is appropriately adjusted as described above so that the mechanical strength of the first panel 30 does not become too weak, and the depth of each recess 4 is increased. Even if it is not too much, it is preferable to ensure the mechanical strength of the rib portion 35 so that the rib portion 35 does not easily deform following the deformation of the low strength portion 36. The depth of each recess 4 is preferably about 1.5 mm to 6 mm, and more preferably about 3 mm.

  Further, in the present embodiment, each recess 4 has a length L (a length along the vertical direction XY from the upper end portion to the lower end portion of each recess 4) L of the center position O of the first panel 30 (this embodiment). Then, the first panel 30 is formed so as to be longer than the interval d between the concave portions 4 at the position where the separation distance in the left-right direction UV is the largest. As a result, the rib portion 35 has a substantially columnar shape that is long in the vertical direction XY, and the mechanical strength is improved. Therefore, the central region of the first panel 30 can be reinforced more favorably. It can prevent favorably that the part 35 dents.

Further, in the present embodiment, each recess 4 is a front view, and is formed in a curved shape which is curved a convex to the center line l ₁ side. By forming each recessed part 4 in such a shape, each recessed part 4 demonstrates reinforcement reinforcement of the rib part 35. FIG. That is, even when the low-strength portion 36 is deformed when a negative pressure is generated inside the container, the recesses 4 can block the propagation of the deformation in the left-right direction UV. It is possible to suppress the deformation following the movement. In the FIG. 2 or the like, each recess 4 is extends obliquely upward with respect to the center line l ₁ so as to be reversed V-shape, obliquely with respect to the center line l ₁ such that the V-shape As shown in FIG. 9, it may extend downward and straight without being inclined with respect to the center line l ₁ (the line connecting the upper end and the lower end of the recess 4 is parallel to the center line l _1. May extend). Further, as shown in FIG. 2 and the like and FIG. 9, the entire shape of each recess 4 is a front view, need not be formed in a curved shape which is curved a convex to the center line l ₁ side, straight It may be formed.

  Further, when the concave portions 4 are arranged at positions separated from each other in the left-right direction UV, when the distance d between the concave portions 4, that is, the lateral width of the substantially columnar rib portions 35 is increased, the mechanical strength of the rib portions 35 is increased. Decreases and the rib portion 35 is easily recessed. Therefore, in the present embodiment, each recess 4 is larger than the interval d between the recesses 4 at the center position O of the first panel 30 (in this embodiment, the position where the separation distance in the left-right direction UV of the first panel 30 is the largest). Each recess 4 is arranged so that the distance D between the side edges 30c and 30d of the first panel 30 is longer. Thereby, in the 1st panel 30, the area of the low intensity | strength part 36 between each recessed part 4 and the both-sides edge part of the 1st panel 30 is more than the area of the rib part 35 pinched | interposed into each recessed part 4. FIG. The rib portion 35 is substantially columnar with a narrow width relative to the entire width of the container 1 (width in the left-right direction UV). Therefore, the mechanical strength of the rib portion 35 is increased, and the low strength portion 36 has a large area and is easily deformed by the negative pressure inside the container. As a result, the rib portion 35 is prevented from being deformed by the negative pressure. Moreover, in this embodiment, in order to ensure the area of the low intensity | strength part 36 more largely, the inside 2 area | regions 30B and 30C of the 1st panels 30 are equally divided into four area | regions 30A-30D in the left-right direction UV. Each recess 4 is provided therein. In addition, as for each recessed part 4, the rough part should just be provided in the area | regions 30B and 30C, for example, the upper end part may extend over area | region 30A, 30B.

  On the other hand, when the interval d between the concave portions 4, that is, the lateral width of the substantially columnar rib portion 35 becomes too small, the substantially columnar rib portion 35 easily breaks and functions as a column that maintains the tension acting on the exterior film 11. Therefore, the interval d between the recesses 4 is preferably 1/50 or more of the lateral width D1 of the first panel 30, for example, 2 mm if the lateral width D1 of the first panel 30 is about 10 mm. The above is preferable. Moreover, since the external width at the time of mounting | wearing with the exterior film 11 will become worse if the width of each recessed part 4 itself becomes large too much, the area | region 30B, 30C divided into 4 of the 1st panel 30 arrange | positioned, respectively. Is preferably not exceeded, and is preferably within ½ of the lateral width of each of the regions 30B and 30C (a quarter width of the lateral width D1 of the first panel 30).

  As described above, according to the resin container 1 of the present embodiment, the substantially columnar rib portion 35 sandwiched between the concave portions 4 is provided at the center of the first panel 30 on the surface side of the trunk portion 3. Even if a negative pressure is generated in the resin container 1, in the first panel 30, the low-strength portions 36 mainly in the regions on both sides of the panel are recessed, and the rib portions 35 are reinforced by the recessed portions 4, so that they are recessed. Is prevented. Therefore, since the exterior film 11 is maintained in a state in which a tension is applied between the rib portion 35 and both side edges of the first panel 30, the exterior film 11 is prevented from being deformed in the first panel 30. Yes. As described above, since the exterior film 11 can be prevented from being deformed on the front side and both side surfaces of the product that is noticeable to the purchaser at the time of store display and where design is important, the design of the resin container 1 can be prevented. Can be prevented.

Although one embodiment of the present invention has been described above, the specific aspect of the resin container according to the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the spirit thereof. It is. For example, in the above embodiment, the pair of recesses 4 for obtaining the reinforcing effect is provided only on the first panel 30 on the front surface side of the body portion 3, but the reinforcing effect is also obtained on the second panel 31 on the back surface side. Therefore, a pair of recesses 4 may be provided. Moreover, the cross-sectional shape of each recessed part 4 does not need to be V shape, and can be various shapes, such as circular arc shape and a rectangular shape. Further, each recess 4 has been disposed symmetrically with respect to the center line l ₁ of the left-right direction UV of the first panel 30 need not necessarily be symmetrical.

  Moreover, in the said embodiment, although the two recessed parts 40 and 41 are each additionally provided for the purpose of decoration outside the left-right direction UV of a pair of recessed part 4 for obtaining a reinforcement effect, The recesses 40 and 41 for this purpose are not always necessary and can be omitted.

  Moreover, in the said embodiment, although the upper part 2 of the resin container 1 is comprised by the neck part 20 and the shoulder part 21, the structure of the upper part 2 is not limited to this, The cap 10 is attached detachably. For example, only the neck 20 may be provided. That is, a configuration in which the body portion 3 is directly connected without providing a step like the shoulder portion 21 may be used.

  Moreover, the trunk | drum 3 does not need to be formed in flat shape, and can be formed in various shapes, such as rectangular shape and polygonal shape, in planar view.

DESCRIPTION OF SYMBOLS 1 Resin container 2 Upper part 3 Body part 4 Recessed part 30 1st panel 31 2nd panel 32 3rd panel 33 4th panel

The object of the present invention is a resin container comprising an upper part having an opening at the upper end and a bottomed body part capable of accommodating contents, the body part being continuous with the upper part and in a tubular shape. A plurality of panels connected to each other, and at least one of the plurality of panels has a surface along the left-right direction protruding outward in a plan view and a flat surface extending in the up-down direction in a side view The at least one panel is achieved by a resin container in which a pair of recesses are provided across the center line in the left-right direction.

The object of the present invention is a resin container comprising an upper part having an opening at the upper end and a bottomed body part capable of accommodating contents, the body part being continuous with the upper part and A plurality of panels connected in a cylindrical shape, and at least one of the plurality of panels has a surface extending in the left-right direction in a plan view protruding outward and a surface extending in a vertical direction in a side view Are formed in a flat curved surface, and the at least one panel is provided with a pair of recesses across the center line in the left-right direction, and rib portions are provided at both sides of the panel in the center region of the panel. A low-strength portion is also achieved by a resin container formed between the portion and each of the recesses.

Claims (7)

A resin container comprising an upper part having an opening at the upper end and a bottomed body part capable of accommodating the contents,
The trunk portion has a plurality of panels that are continuous with the upper portion and connected in a cylindrical shape,
At least one of the plurality of panels is formed in a curved shape in which a surface along the vertical direction has a convex shape and a surface along the horizontal direction forms a flat shape,
A resin container, wherein the at least one panel is provided with a pair of recesses across the center line in the left-right direction. A resin container comprising an upper part having an opening at the upper end and a bottomed body part capable of accommodating the contents,
The trunk portion has a plurality of panels that are continuous with the upper portion and connected in a cylindrical shape,
At least one of the plurality of panels is formed in a curved shape in which a surface along the vertical direction has a convex shape and a surface along the horizontal direction forms a flat shape,
The at least one panel is provided with a pair of recesses across the center line in the left-right direction, a rib portion at the center of the panel, and a low-strength portion between each side edge of the panel and each recess, A formed resin container. Each recess extends obliquely outward with respect to the vertical direction or the vertical direction,
The resin container according to claim 1 or 2, wherein an interval between the concave portions at a center position of the at least one panel is shorter than a length along the vertical direction of the concave portions.   4. The resin container according to claim 3, wherein each of the recesses is formed in a linear shape or a curved shape that is convex and curved toward the center line.   The distance between each said recessed part and the both-sides edge part of the said at least 1 panel is longer than the space | interval of each said recessed part in the center position of the said at least 1 panel. Plastic container.   The resin container according to any one of claims 1 to 5, wherein the recess is provided in each of the two inner regions obtained by equally dividing the at least one panel into four regions in the left-right direction. The trunk is formed in a flat shape with a small width on the left and right side surfaces with respect to the front and back surfaces,
7. The pair of recesses are provided in at least the panel forming the surface, and each of the recesses has a lateral width within 1/2 of a lateral width of each of the four divided regions of the panel. The resin container according to 1.

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