JP5348863B2 - Plastic bottle handle and plastic bottle with handle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a handle of a new form, which is not detached from a bottle even when a large shock is applied thereto, and a bottle with the handle. <P>SOLUTION: The handle includes a grip part, and upper and lower supporting arms projecting forwardly from upper and lower parts of the grip part, and is fitted to a plastic bottle via the upper and lower supporting arms. The upper supporting arm is formed into a tapered shape so that the width in the right-to-left direction is reduced from the front side to the rear side. <P>COPYRIGHT: (C)2009,JPO&amp;INPIT

Description

  The present invention relates to a handle for attaching a plastic bottle, and more particularly to a handle for attaching to a large bottle for filling a large volume of 1.5 liters or more, and a plastic bottle with a handle provided with the handle.

  Since plastic bottles are inconvenient to handle when they are large, bottles with a handle attached to a part of a plastic bottle (hereinafter abbreviated as “bottle”) are used as containers for seasonings such as soy sauce and mirin. ing. By grasping the handle, the user can stably handle even a large heavy bottle.

  Such a bottle with a handle is generally formed by previously forming a handle separately from the bottle body by a method such as injection molding, and integrating the both in the blow molding process of the bottle body. ing. At the time of blow molding, the bottle is molded so as to be entangled with a part of the handle, and both are integrated.

  Thus, since the handle is originally formed separately from the bottle body, it is required that the handle is sufficiently strongly fitted to the bottle body. Further, in a large bottle, the fitting portion between the handle and the bottle main body supports the entire weight of the bottle, so that the demand is particularly great.

Patent Document 1 describes a handle for a large bottle. FIG. 3 of Patent Document 1 includes a grip portion and upper and lower support arms protruding forward from the upper and lower portions thereof, and further extends above the grip portion from a position where the upper support arm branches from the grip portion. A handle provided with an upwardly extending portion is provided. The handle is attached to a recess formed on the upper side surface of the bottle via an upper support arm and a lower support arm.
JP 2000-43877 A

  However, a bottle with a conventional handle as described in Patent Document 1 sometimes comes off from the bottle when an impact is applied to the bottle, for example, by dropping the bottle on the floor. It is quite possible that a large impact, such as dropping on the floor, is applied to the bottle with a handle during use in the distribution stage or in a general household, and once the handle is removed from the bottle, it is generally impossible to return it. there were. For this reason, there is a need for a bottle with a handle that does not have to worry about the handle coming off even when a large impact is applied to the bottle.

  Then, even if a big impact is added, this invention makes it a subject to provide the handle with a novel shape which does not remove | deviate from a bottle, and a bottle with a handle provided with this handle.

  The present invention will be described below. In order to facilitate understanding of the present invention, reference numerals in the accompanying drawings are added in parentheses, but the present invention is not limited to the illustrated embodiment.

The first aspect of the present invention comprises a grip portion (10), an upper support arm (22) and a lower support arm (24) projecting from the upper and lower portions of the grip portion (10) to the plastic bottle body side , and the upper support A handle for attachment to the bottle via an arm (22) and a lower support arm (24),
The upper support arm (22), the lower support arm (24), or the upper support arm (22) and the lower support arm (24), the width of the support arm increases from the tip of the support arm toward the grip (10). The upper support arm (22) is provided with an upper extending portion (40) formed so as to be narrowed and extending upward from the position where the upper support arm (22) branches from the grip portion. Is a plastic bottle mounting handle (100) in which the height from the upper surface to the top of the upwardly extending portion (40) is 15 mm or less . Here, the code | symbol 100 is used as a high-order concept including 100A-100D.

  In this specification, in the state where the handle (100) is attached to the bottle body, when the bottle is placed on a flat surface with the bottle bottom face down, the direction on the bottle mouth side is set upward with respect to the handle (100). The direction on the bottom side of the bottle is the downward direction. Moreover, in the state which attached the handle (100) to the bottle main body, the bottle main body side is made into the front and the handle (100) side is made into the back on the basis of the state which has arrange | positioned the handle (100) to the observer side. Further, the left-right direction is determined based on the observer.

The bottle mounting handle (100) of the first aspect of the present invention has an upper support arm (22), a lower support arm (24), or a taper (22c) to the upper support arm (22) and the lower support arm (24 ). Is formed. By adopting such a structure, when the handle (100) is attached to the bottle body, the handle fitting strength can be increased. Even when an impact is applied to the bottle by dropping the bottle with a handle onto the floor or the like, the handle (100) is prevented from being detached from the bottle, and impact resistance can be imparted to the bottle.

In the first aspect of the present invention, the taper angle of the taper (22c) is preferably 4 ° to 20 °, and more preferably 6 ° to 10 °. By making the taper angle within this range, the effect of improving the handle fitting strength becomes remarkable, the frequency of occurrence of pinholes during blow molding of the bottle can be suppressed, and the strength of the handle itself is not impaired. Here, as shown in FIG. 3, the taper angle refers to the upper support arm (22), the lower support arm (24), or the handle from the end of the upper support arm (22) and the lower support arm (24). The angle θ between the tangent and the taper when a horizontal tangent is drawn to the rear of (100).

  In the first aspect of the present invention, only the upper support arm (22) can be formed with a taper (22c) such that the width in the left-right direction becomes narrower from the front direction toward the rear direction. The combined strength can be sufficiently improved.

First in the present invention, e Bei the upwardly extending portion (40) which extends above the grip from the position that branches from the upper support arm (22) grip (10) (10), the upper support arm when the top surface (22) and the horizontal, height to the top of the upwardly extending portion from the upper surface (40) that is a 15mm or less. By adopting such a structure, when the handle (100) is attached to the bottle body, the handle fitting strength can be increased. Even when an impact is applied to the bottle by dropping the bottle with a handle onto the floor or the like, the handle (100) is prevented from being detached from the bottle, and impact resistance can be imparted to the bottle. Note that the term “branch” in the above “the upper support arm (22) branches from the grip portion (10)” is strictly the upper support arm (40) when the upper extension portion (40) exists. 22) refers to a form that branches in a T-shape. In the present invention, the upper support arm (22) and the grip portion (10) are provided when the upwardly extending portion (40) is not present. The meaning also includes an L-shaped form.

  In the first aspect of the present invention, it is preferable that the constricted portion (50) is formed in at least a part of the grip portion (10). The constricted portion (50) refers to a portion that is narrowed as the cross-sectional area of the grip portion (10) decreases. The constricted portion (50) may have a shape that narrows from the left-right direction toward the center, or may have a shape that narrows from the front-rear direction toward the center.

  By forming the constricted part (50) in at least a part of the grip part (10), the amount of resin used in the handle (100) can be reduced, contributing to weight reduction and cost reduction. Moreover, by forming the constricted part (50), flexibility can be imparted to the grip part (50), and the impact resistance of the bottle to which the handle (100) is attached can be further improved.

In the first aspect of the present invention, it is preferable that protrusions (62, 64) formed so as to protrude upward are provided at the tips of the upper support arm (22) and the lower support arm (24). By providing the protrusions (62, 64), when the handle (100) and the bottle main body are integrated by blow molding, the protrusions (62, 64) serve as anchors, and the handle fitting strength Can be increased.

  The second aspect of the present invention includes a plastic bottle body (210), and a handle mounting recess (230) is formed on the upper side surface of the bottle body (210), and the bottle is mounted in the handle mounting recess (230). It is a bottle with a handle (200) comprised including the handle (100) for bottle attachment of the 1st this invention. In the second aspect of the present invention, the filling capacity can be 1.5 liters or more and 2.0 liters or less, and the handle fitting strength is high by including the handle (100) of the first aspect of the present invention. It can be set as a bottle with a handle (200). Specifically, in the second aspect of the present invention, when the filling capacity is 1.5 liters or more and 2.0 liters or less, the fitting strength of the handle (100) at 23 ° C. can be at least 245N.

  The grip fitting strength was measured according to the following procedure. That is, a bottle with a handle is filled with 1.5 to 2.0 liters of normal temperature water (23 ± 2 ° C.) in accordance with the content of the bottle, and capped. Then, the bottle was laid down and fixed, and a position of 125 mm from the top of the bottle cap was pulled at a speed of 500 mm / min. And the load (N) when a handle removed was made into fitting strength. The strength is unique to a bottle with a handle, and a bottle with a handle having the above-described fitting strength can be said to be a bottle with a handle with higher reliability.

  When the filling capacity of the second bottle of the present invention is 1.5 liters or more and 2.0 liters or less, the weight of the entire bottle (200) with the handle is 54 g or more and 73 g or less, and the lower support arm (24 ) Is attached to the lower part of the bottle main body (210B) below the part to which the weight is reduced, the weight can be reduced to 0.22 mm or more and 0.40 mm or less. This lightweight bottle enables weight reduction that has not been obtained in the past. And while lightening, the intensity | strength required for large sized bottles, such as a buckling strength and a line pressure-proof intensity | strength, can be made into a sufficient value. Specifically, in the light weight bottle, the buckling strength (vertical load strength) at 23 ° C. after filling can be at least 392N. Further, the line pressure resistance at 23 ° C. can be at least 40 N.

  In the present specification, the “average thickness of the lower part of the bottle body” means the lower part of the bottle body (210B) below the part where the lower support arm (24) is attached and above the bottle installation part on the bottom of the bottle. ), And does not include the average thickness of the bottom surface of the bottle including the bottle installation portion.

  The bottle with a handle of the second invention is 1.5 liters or more, preferably 1.6 liters or more, more preferably 1.7 liters or more, and 2.7 liters or less, preferably 2.5 liters or less. More preferably, it can be used as a bottle filled with an internal volume of 2.0 liters or less, more preferably 1.9 liters or less, particularly preferably 1.8 liters. The bottle with a handle of the second aspect of the present invention can maintain the strength even if the average thickness at the bottom of the bottle body is reduced to reduce the weight, and it has been obtained as a bottle with a handle of 1.5 liters or more so far. It can be a lightweight bottle that has not been used.

  The buckling strength (vertical load strength) was measured according to the following procedure. That is, a bottle with a handle is filled with normal temperature water (23 ± 2 ° C.) in accordance with the inner volume of the bottle, 1.5 liters to 2.0 liters, and capped. Then, the bottle is compressed at a speed of 100 mm / min vertically downward from the top surface of the bottle cap. The load (N) when the bottle was buckled was defined as the buckling strength (vertical load strength). By providing the buckling strength as described above, when a vertical force is applied to the bottle with a handle by, for example, stacking filled bottles in warehouse storage, the bottle with the handle is prevented from buckling and deforming. can do.

  The measurement of the line pressure resistance was performed according to the following procedure. That is, three identical bottles with a handle of the present invention are prepared, and each is filled with 1.5 to 2.0 liters of room temperature water (23 ° C. ± 2 ° C.) according to the content of the bottle. These three bottles are vertically arranged in a line between a support plate and a pressing plate that are arranged to face each other in parallel. At this time, it arranges so that the contact point of an adjacent bottle may contact. Then, press the pressing plate toward the supporting plate with the supporting plate and the pressing plate in contact with the side surfaces of the bottles at both ends aligned in a row, and sit on the wall surface (contact point) of the center bottle. The pressing force (N) of the pressing plate when bending deformation (crushing) occurred was measured, and this was defined as the line pressure resistance strength of the central bottle. The bottle with a handle of the present invention can have the above-mentioned line pressure resistance even if the thickness of the lower part of the bottle body is reduced to reduce the weight. And it can prevent that a deformation | transformation of a bottle etc. arises at the time of bottle conveyance, and can maintain the external appearance quality of a bottle.

  Hereinafter, the present invention will be described based on embodiments shown in the drawings.

<Handle 100 for attaching the bottle>
FIG. 1 is a perspective view of a bottle mounting handle 100A according to an embodiment of the present invention. As shown in the figure, in the state attached to the bottle, the grip portion 10 is arranged so as to be substantially vertical. An upper support arm 22 is provided so as to protrude forward slightly below the upper end of the grip 10. A lower support arm 24 is provided at the lower end of the grip 10 so as to protrude forward. When the bottle is blow-molded, the bottle main body is entangled with the upper support arm 22 and the lower support arm 24, so that the bottle main body and the handle 100A are integrated.

(Taper 22c)
The upper support arm 22, the lower support arm 24, or the upper support arm 22 and the lower support arm 24 of the bottle mounting handle 100 according to the present invention have a lateral width that decreases from the front to the rear. A tapered 22c is formed. Thereby, when a handle is attached to the bottle body, the handle fitting strength can be increased. FIG. 2A shows a left side view of the bottle mounting handle 100A, FIG. 2B shows a front view, FIG. 2C shows a plan view, and FIG. 2D shows a bottom view. FIG. 3 shows a plan view of the bottle mounting handle 100A. In the illustrated form, as an embodiment of the present invention, a taper 22 c is formed only on the upper support arm 22. In the upper support arm 22, the width Z2 in the left-right direction on the rear side is narrower than the width Z1 in the left-right direction on the front side, and is tapered.

  The lower limit of the taper angle θ of the taper 22c is preferably 4 ° or more, more preferably 6 ° or more, and the upper limit is preferably 20 ° or less, more preferably 10 ° or less. When the taper angle θ is too small, the effect of improving the handle fitting strength is reduced. If the taper angle θ is too large, pinholes are likely to occur during blow molding of the bottle, and the strength of the handle itself is reduced due to stress concentration at the constricted portion.

  The widths Z1 and Z2 in the left-right direction and the width Z3 in the front-rear direction shown in FIG. 2 (c) are not particularly limited because they are determined by the size of the handle 100, that is, the filling capacity of the bottle. When the filling capacity of the bottle is 1.5 L or more and 2.0 L or less, the width Z1 is preferably 10 mm or more and 30 mm or less, more preferably 15 mm or more and 20 mm or less. The width Z2 is preferably 7 mm or more. The width Z3 is preferably 7 mm or more and 25 mm or less, more preferably 14 mm or more and 18 mm or less. The respective widths are determined by the taper angle θ within the range of Z1, Z2 and Z3 described above.

(Upper extension 40)
In the form shown in FIG. 1, an upward extending portion 40 is formed above the grip portion 10 from a position where the upper support arm 22 branches from the grip portion 10. The upward extending portion 40 serves as a stopper for preventing the handle from coming off in the direction of the arrow X1 when the handle is held and the bottle with the handle is lifted. It is a member.

  The present inventors, when a large impact is momentarily applied to the bottle with a handle, such as by dropping the bottle with a handle onto the floor, the upper extending portion 40 does not serve as a stopper, It has been found that the handle 100 may help to come off. From such a point of view, the present inventors diligently studied the shape of the upwardly extending portion 40, and as a result, whether the upper surface of the upper support arm 22 is flat without forming the upwardly extending portion 40. Alternatively, it has been found that even when the upward extending portion 40 is formed, it is necessary to limit the height thereof to a predetermined range.

  The height of the upward extending portion 40 will be described with reference to FIG. When the upper surface Y1 of the upper support arm 22 is horizontal, the height of the upper extension 40 needs to be 15 mm or less with reference to the upper surface Y1. That is, the length L1 of the perpendicular drawn from the upper surface Y1 toward the top Y2 of the upwardly extending portion 40 needs to be 15 mm or less. L1 is preferably 10 mm or less, more preferably 5 mm or less, and even more preferably 3 mm or less. Moreover, since the upper extension part 40 can also be provided on the same surface as the upper support arm 22, the lower limit of the upper extension part 40 can be 0 mm.

(Constriction 50)
It is preferable that the grip part 10 in the handle for attaching a bottle of the present invention is provided with a constricted part 50 at least in part. The constricted portion 50 refers to a portion that is narrowed by reducing the cross-sectional area of the grip portion 10. FIG. 4A shows a cross-sectional view taken along the line AA of the grip portion 10, and FIG. 4B shows a cross-sectional view taken along the line BB. As will be described in detail later, in the illustrated embodiment, the grip portion 10 has a structure in which a rib 16 is connected to the front plate 12 and the rear plate 14.

4B shows a cross-sectional view of the constricted portion 50. Compared with FIG. 4A, the length of the front plate 12 in the vertical direction on the paper surface, particularly the length of the rear plate 14 in the vertical direction on the paper surface. Is decreasing. Thereby, the cross-sectional area is reduced as a whole, and the constricted portion 50 is formed. In the illustrated form, the constricted portion 50 is formed narrowing from the left and right directions of the grip portion 10 toward the center. However, even if the constricted portion 50 is formed by narrowing from the front and rear toward the center. Good.
In this case, the length of the rib 16 in FIG. 4 in the left-right direction is reduced.

  Thus, by forming the constricted part 50 in at least a part of the grip part 10, it is possible to reduce the amount of resin used in the handle 100 and contribute to weight reduction and cost reduction. The mass of the handle 100 is 12 g or less, preferably 11.5 g or less, more preferably 11 g or less, and further preferably 10.5 g or less. Further, by forming the constricted portion 50, flexibility can be imparted to the grip portion 10, and the impact resistance of the bottle to which the handle 100 is attached can be further improved. That is, when a large impact is applied to the bottle, for example, by dropping the bottle on the floor, the bottle bends in such a direction that the handle mounting recess is crushed, and stress is applied to the handle 100 from above and below. At this time, if the handle 100 is not flexible, the handle 100 may be detached from the recess due to pressure from above and below, or the handle 100 may be broken in some cases. In the present invention, by forming the constricted portion 50, the handle 100 is given flexibility, so that such a situation can be prevented.

(Protruding portions 62, 64)
Protrusions 62 and 64 are preferably formed on the tip portions of the upper support arm 22 and the lower support arm 24 of the bottle mounting handle of the present invention so as to protrude upward. The shape of the protrusions 62 and 64 is not particularly limited, and may be a shape that protrudes upward in the substantially vertical direction from the upper surfaces of the upper support arm 22 and the lower support arm 24. Both protrusions 62 and 64 are preferably upward.

When the bottle body is blow molded, the handle 100 is fixed to the bottle body by the entanglement of the bottle body with the upper support arm 22 and the lower support arm 24. At this time, the protrusions 62 and 64 serve as anchors. To increase the handle fitting strength.

(Embodiment 100A)
An embodiment 100A of the bottle handle of the present invention shown in FIGS. 1 to 4 will be described. The grip portion 10 in the bottle handle embodiment 100A is configured by a rib 16 connecting a front plate 12 disposed in front and a rear plate 14 disposed in the rear. A constricted part 50 is formed above the center part of the grip part 10 in the vertical direction. As shown in the cross-sectional view of FIG. 4B, the constricted portion 50 is formed by reducing the length of both the front plate 12 and the rear plate 14 in the left-right direction. In particular, the length of the rear plate 14 is greatly reduced, so that the rear plate 14 is narrower than the front plate 12.

  On the lower side of the grip portion 10 with respect to the central portion in the up-down direction, an unevenness 18 for preventing slipping is formed. Concavities and convexities 18 are continuously provided on the side surfaces of the front plate 12 and the rear plate 14 in several vertical directions.

  An upper support arm 22 is formed from the upper portion of the grip portion 10 so as to protrude forward, and the upper support arm 22 is configured by connecting the upper surface plate 22a and the lower surface plate 22b to the rib 16. . In the illustrated form, the width in the left-right direction of the lower surface plate 22b is narrower than the width Z2 of the upper surface plate 22a, and is formed constant over the front and rear. Further, the upper surface plate 22a is formed in a tapered shape from Z1 having a large width toward Z2 having a small width, and the width in the left-right direction is narrowed from the front direction to the rear direction. The taper angle θ of the illustrated form 100A is 8.5 °. The upper surface plate 22a is bent at a right angle downward at the front end portion of the upper support arm 22, and is connected to the lower surface plate 22b at the front end portion. The bottom plate 22b and the front plate 12 of the grip portion 10 are connected by being bent at their respective end portions to form a single curved surface.

An upper extending portion 40 is formed on the upper portion of the grip portion 10. The upper extending portion 40 is formed such that the upper surface plate 22a is raised upward toward the rear. The upper surface plate 22a and the rear plate 14 are connected by bending their respective end portions to form one curved surface. A protruding portion 62 that protrudes upward is formed at the top end portion of the upper surface plate 22 a of the upper support arm 22. The protruding portion 62, the bottom surface is a cross-sectional trapezoidal prismatic facing forward.

  A constriction is formed in the lower part of the concavo-convex 18 at the lower part of the grip 10. The constriction has a function similar to that of the constricted portion 50. A lower support arm 24 is formed so as to protrude forward from the lower portion of the grip portion 10. The lower support arm 24 is configured by connecting a top plate 24a and a bottom plate 24b to a rib 16. The upper surface plate 24 a and the lower surface plate 24 b have substantially the same width, and are connected to each other at the front end portion of the lower support arm 24. The front plate 12 of the grip portion 10 is constricted at the lower portion of the unevenness 18 and curved with the left and right widths being reduced, and is connected to the curved upper surface plate 24a having the same width to form a single curved surface. .

  The rear plate 14 of the grip portion 10 is constricted at the lower part of the projections and recesses 18, and then the left and right widths are narrowed. Then, the rear plate 14 is curved while widening the left and right widths. Thus, one curved surface is formed.

A protruding portion 64 that protrudes upward is formed at the top end portion of the upper surface plate 24 a of the lower support arm 24. The shape of the protrusion 64 is the same as that of the protrusion 62 described above. In the illustrated form, a protrusion is formed on the side surface of the tip of the lower support arm 24. The protrusion has the same function as the protrusion 64.

  As shown in FIG. 2D, unevenness 26 is formed on the lower surface plate 24 b of the lower support arm 24. When the bottle is blow-molded, the bottle bites into the irregularities 26, whereby the grip fitting strength can be further increased. Furthermore, although extremely rare, a pinhole may occur in this portion, and in this case, it also acts as a pinhole detection air vent groove.

(Embodiments 100B, 100C, 100D, 100E)
FIG. 5A shows a left side view of another embodiment 100B of the bottle handle of the present invention, and FIG. 5B shows a left side view of another embodiment 100C. In the embodiments 100B and 100C, the upward extending portion 40 is not formed. The upper surface plate 22a of the upper support arm is straightly bent rearward and bent downward as it is, and is connected to the rear plate 14 of the handle 10. In the embodiments 100B and 100C, the corner portions E1 and E2 above the grip portion 10 have different Rs. In the embodiment 100B (E1), it is R5, and in the embodiment 100C (E2), it is R8.8. Increasing R is advantageous in that the amount of resin used can be reduced and the mass of the handle can be reduced.

  FIG. 6 shows another embodiment 100D of the bottle handle of the present invention. 6A is a plan view, FIG. 6B is a left side view, and FIG. 6C is a bottom view. Also in the embodiment 100D, the taper 22c is formed on the upper support arm 22 as in the embodiment 100A, but the taper angle θ is small and is 4.3 °.

  FIG. 7 shows another embodiment 100E of the bottle handle of the present invention. 7A is a plan view, FIG. 7B is a left side view, FIG. 7C is a bottom view, and FIG. 7D is a front view. Also in the embodiment 100E, the upper support arm 22 is formed with a taper 22c, and the taper angle θ is 8.5 °. Moreover, when the corner | angular part upper part of the grip part 10 is taken and it sees with a side view, it is inclined, and the upward extending part 40 is convex toward the upper direction. Further, the constricted portion 50 is not formed in the grip portion 10.

(Production method)
The bottle handles 100A to 100E of the present invention are usually manufactured by injection molding. Injection molding is performed using an injection mold that includes a movable mold and a fixed mold, and both molds can be divided from the center in the left-right direction of the handle. In the grips 100A to 100E for bottles shown in the embodiment, the grip portion 10, the upper support arm 22, and the lower support arm 24 have an H-shaped cross section. Thereby, since a so-called undercut portion that becomes a resistance against the dividing direction of the injection mold and the pulling direction of the handle does not occur, there is an advantage that the process of dividing both molds and taking out the handle becomes easy. If the cross section is not H-shaped to obtain a sufficient strength, it is necessary to increase the thickness, and if the thickness is increased, the shrinkage in the cooling process when the handle is injection-molded, A depression (so-called “sink”) is likely to occur on the upper tip surfaces of the protrusions 62 and 64. By making the cross section H-shaped in this way, there is an advantage that such sinks are unlikely to occur and the generated sinks are not conspicuous.

<Bottle with handle 200>
The bottle 200 with a handle of the present invention includes a bottle body 210 and the handle 100 of the present invention. FIG. 8 shows a rear view of the bottle 200 with a handle of the present invention, FIG. 9 shows a side view, and FIG. 10 shows a front view. FIG. 11 is a cross-sectional view taken along the line AA in FIG. 9 (FIG. 11A) and a cross-sectional view taken along the line BB (FIG. 11B). The handle 100 is attached to a handle mounting recess 230 formed in the bottle body 210. The internal volume of the bottle 200 with a handle of the present invention is 1.5 liters or more, preferably 1.6 liters or more, more preferably 1.7 liters or more, and 2.7 liters or less, preferably 2.5 liters. Hereinafter, it is more preferably 2.0 liters or less, still more preferably 1.9 liters or less, and most preferably 1.8 liters.

(Hand fitting strength)
Projecting portions 62 and 64 projecting upward are formed at the tips of the support arms 22 and 24 of the handle 100. When the bottle main body 210 of the present invention is blow-molded, the wall surface of the handle mounting recess 230 covers the tip portions of the upper and lower support arms 22 and 24 and entangles with the projecting portions 62 and 64 projecting upward from the tip ends. Thus, the handle body 100 is attached to the handle attaching recess 230. Thus, fitting strength can be made high by making a fitting shape complicated.

Further, the upper support arm 22, the lower support arm 24, or the upper support arm 22 and the lower support arm 24 of the present invention is formed with a taper 22c that becomes thinner from the front direction toward the rear direction. When the support arms 22 and 24 are entangled with the bottle, the taper 22c serves as a stopper. Thereby, it is considered that the fitting strength can be further increased.

Further, in the bottle mounting handle 100 of the present invention, the height of the upward extending portion 40 that has been conventionally provided as a stopper is limited to a predetermined range. Thereby, the bottle 200 with a handle of this invention can enlarge a handle fitting intensity | strength. And even when an impact is applied to the bottle by dropping the bottle onto the floor, it is possible to prevent the handle from being detached from the bottle.

  In the bottle with handle 200 of the present invention, the fitting strength of the handle 100 at 23 ° C. can be set to 245 N or more. And this fitting strength can be 300N or more preferably, more preferably 400N or more, still more preferably 500N or more. Moreover, when the constricted part 50 is formed in the grip part 10, the fitting strength can be further improved.

  Further, as will be described in the following preferred embodiments, when the bulging protrusions 236, 238, etc. are provided as reinforcing means for the handle mounting recess 230, the fitting strength can be further improved.

  Hereinafter, as a preferred embodiment of the bottle 200 with a handle of the present invention, a weight reduction that cannot be obtained by a conventional bottle can be achieved, and a bottle with a handle having a large capacity such as buckling strength and line pressure strength can be achieved. The bottle 200 with a handle of the present invention having various strengths required for the present invention will be described.

<Lightweight bottle with handle 200>
(Bottle body 210)
As shown in FIG. 9, the bottle body 210 has a constriction 211 near the center in the vertical direction. The bottle body 210 is reinforced by the constriction 211 and is substantially divided into a bottle body upper part 210A and a bottle body lower part 210B. In the illustrated embodiment, the constriction 211 is partly cut off by the lower portion of the handle mounting recess 230, but may be a continuous form in the circumferential direction. Moreover, the formation of the constriction 211 is optional and may not be formed.

A handle mounting recess 230 is formed on the side surface of the bottle main body upper portion 210A. A handle 100 is attached to the handle mounting recess 230 to form a handle-equipped bottle 200. The bottle of the present invention is a large-sized (large-capacity) bottle used for adding seasonings such as soy sauce.
Therefore, since the circumference of the bottle body is large, it is difficult for the user to grasp the bottle body 210.
For this reason, the handle 100 is attached to the bottle main body 210 to improve handling properties (ease of holding).

  The depth of the handle mounting recess 230 is preferably set in the range of ¼ to ３ of the diameter of the maximum outer diameter portion of the bottle body 210. For example, in the case of a polyethylene terephthalate resin bottle having a height of 310 mm, a maximum outer diameter of 106 mm, and an internal volume of 1885 ml, the depth of the handle mounting recess 230 is preferably set to about 30 mm. 100 becomes easy to grasp. In the illustrated embodiment, various reinforcing structures (232, 234, etc.) are formed in the recess 230 for attaching the handle. Details of the reinforcing structure will be described later. On the back side of the bottle rear surface where the handle mounting recess 230 shown in FIG. 8 is formed, that is, the bottle main body upper part 210A on the front side of the bottle shown in FIG. Cylindrical wall surfaces 214A are alternately formed. By adopting such a structure, the vertical and horizontal rigidity of the bottle can be increased, and the bottle internal pressure change caused by the density change with the temperature of the content liquid is alleviated, and the bottle label portion and the like are deformed. Can be prevented. In addition, the inclined wall surface 212A may be planar, but may also have a shape that is slightly recessed toward the inside of the bottle as shown in FIG. By adopting this shape, the rigidity in the left-right direction can be further improved.

A plurality of concave grooves 216A are formed below the bottle main body upper portion 210A on the bottle front surface. The concave groove 216A is a narrow groove having a width from the first inflection point to the second inflection point of 1 mm or more, preferably 2 mm or more and 5 mm or less, preferably 4 mm or less.
Here, the 1st inflection point and the 2nd inflection point in a ditch | groove are demonstrated using Fig.21 (a). FIG. 21A shows an enlarged cross-sectional view of the groove portion. The right hatched portion in the figure is the bottle main body 210. The curved portion where the wall surface of the bottle main body upper part 210A approaches the concave groove 216A is the first rib curve, the curved part constituting the concave part of the concave groove 216A is the second rib curved line, and the concave groove 216A is again the bottle main body 210A. Assuming that the curved portion approaching the wall surface is the third rib curve, the point at which the first rib curve changes to the second rib curve is the first inflection point L1, and the second rib curve is the third rib curve. The point that changes to becomes the second inflection point L2. In the present invention, the distance L between these inflection points is in the above range (the same applies to the annular groove 212B described below). In the illustrated form, a total of three concave grooves 216A are formed at substantially the same interval in the horizontal direction. By forming the concave groove 216A, the bottle body upper portion 210A can be given rigidity in the left-right direction. The bottle main body upper part 210A in the form shown in the figure has a substantially conical shape whose diameter decreases as it goes upward in the figure. In the tip portion, the ratio of decreasing the diameter becomes larger, and a conical reduced diameter portion 217 is formed. An opening 218 is formed at the upper end so that the lid can be closed.

The bottle main body lower part 210B is a substantially cylindrical straight body part. In the illustrated form, a plurality of annular grooves 212B are formed so as to go around the straight body portion. The annular groove 212B is a narrow groove having a width from the first inflection point to the second inflection point of 1 mm or more, preferably 2 mm or more, and 5 mm or less, preferably 4 mm or less. Stiffness is improved.
The position where the annular groove 212B is formed, the number thereof, and the like are not particularly limited, and are appropriately determined depending on, for example, the position where the lateral rigidity is desired to be improved and how much the rigidity is desired to be improved. In the illustrated form, a total of five annular grooves 212B are formed at substantially the same interval in the horizontal direction.

  Further, in the bottle main body lower part 210B, a rib 214B is formed at a position where the lateral rigidity is particularly desired to be improved, that is, at a place where the bottle comes into contact with an adjacent bottle in the conveyance on the line. The rib 214B ensures the line pressure resistance strength described below. Details will be described later.

FIG. 12 is a cross-sectional view taken along the line II of FIG. The relationship between the bottle main body 210 and the handle 100 attached by blow molding is shown. When the bottle body 210 is blow-molded, the wall surface of the handle mounting concave portion 230 covers the tip portions of the upper and lower support arms 22 and 24 and is entangled with the protruding portions 62 and 64 protruding upward from the tip ends. The handle 100 is attached to the mounting recess 230.

(Whole mass of bottle 200)
The bottle 200 with a handle of the present invention has a total bottle mass in the range of 54 g to 73 g, preferably 55 g to 70 g, and more preferably 56 g to 68 g. Conventionally, in a bottle with a handle having a large capacity of 1.5 liters to 2.0 liters, since various strengths are required, it has been difficult to reduce the weight and reduce the amount of resin used. Has achieved weight reduction beyond these limits.

(Average thickness of the bottom 210B of the bottle body)
The average thickness of the bottle main body lower part 210B of the bottle 200 with a handle of the present invention is 0.22 mm or more and 0.40 mm or less. Conventionally, in order to provide lateral rigidity of the lower part of the bottle body 210B, that is, sufficient line pressure resistance, the average thickness of the lower part of the bottle body 210B needs to be increased to at least about 0.41 mm to 0.6 mm. was there. In particular, in the vicinity of the bottom surface of the bottle, which is a portion in contact with the adjacent bottle on the conveyor, it is necessary to increase the thickness particularly, and an average thickness of 0.5 mm or more is required. In the present invention, it has succeeded in reducing the average thickness of the lower portion 210B of the bottle main body to about half while making the line pressure resistance sufficient, thereby reducing the weight of the entire bottle 200 with a handle. , And succeeded in greatly reducing the amount of resin used. In addition, when the inner volume of the bottle is set to 1.7 liters to 1.9 liters, for example, the average thickness of the lower portion 210B of the bottle body is preferably 0.24 mm or more and 0.39 mm or less. Moreover, when the internal capacity of the bottle is 1.8 liters, it is preferable that the average thickness of the bottle main body lower part 210B is 0.25 mm or more and 0.38 mm or less.

(Resistant line pressure strength)
The line pressure resistance at 23 ° C. of the bottle 200 with a handle of the present invention is preferably at least 40 N, more preferably 50 N or more, and further preferably 70 N or more. By providing such a line pressure resistance strength, it is possible to prevent the bottle from being deformed such as a dent during conveyance on the line.

  Conventionally, the thickness of the maximum outer diameter part (contact point) of the bottle body where adjacent bottles are in contact with each other while sliding on the conveyor belt and pressed is applied to increase the resistance to line pressure. Measures have been taken to locally increase the rigidity of the portion where the pressing force of the bottle body is applied by forming a concave or convex rib around the bottle wall along this contact point and molding the bottle .

  However, when the thickness of the contact point is increased as in the former case, although the strength against the line pressure is increased, the object of the present invention to reduce the weight of the bottle cannot be achieved. In addition, if the thickness of the portion other than the contact point is reduced in order to reduce the weight, other physical properties of the bottle such as reduced pressure strength and buckling strength are reduced.

  In addition, sufficient rigidity against the line pressure cannot be obtained simply by providing ribs around the contact points as in the latter case.

  Conventionally, the general view is that a sufficient line pressure strength cannot be obtained simply by forming ribs along contact points. However, the present inventor unexpectedly increases the rib 214B by forming the rib 214B along the contact point and reducing the thickness of the bottle at the contact point to 0.22 mm or more and 0.40 mm or less as described above. It has been found that line pressure strength can be obtained.

  Conventionally, it has been common knowledge that reducing the thickness at the contact point is reducing the line pressure resistance. Under such common sense, the inventor dared to reduce the thickness at the contact point. As a result, the reduction in wall thickness and the formation of the rib 214B showed a synergistic effect, and the bottle with a handle 200 of the present invention having excellent line pressure resistance strength was completed.

  The present inventor considers the reason why such excellent line pressure strength can be provided as follows. In the case of a bottle in which a rib is formed along a conventional contact point, it is in contact with an adjacent bottle at the apex of the rib during conveyance on the line. That is, the contact point is one point that is the apex of the rib, and the line pressure is concentrated on this one point, and a dent or the like is likely to occur. On the other hand, in the bottle 200 of the present application, the rib 214B is formed along the contact point and the thickness of the portion is reduced, so that when the line pressure is applied, the bottle 200 comes into surface contact with the adjacent bottle. It is like that. In other words, since the wall thickness is thin, the ribs 214B are soft, and therefore, the ribs 214B of adjacent bottles are crushed and become in surface contact (in other words, the contact point becomes a contact area). .) And since a point became a surface, a line pressure is disperse | distributed and a line pressure-proof intensity | strength improves.

As described above, it is preferable to increase the width of the rib 214B from the viewpoint of bringing adjacent bottles into surface contact. Further, a plurality of ribs 214B can be provided to increase the contact area.
Various embodiments of the rib 214B of the present invention are shown in FIGS. In each embodiment shown in FIGS. 13 to 18, (a) is an example in which a rib 214B is provided only on the lower side of the lower part of the bottle body 210B, and (b) is a similar rib 214B on the upper side of the lower part of the bottle body 210B. Is an example. In (b), since the contact area is doubled, the line pressure resistance can be further improved. The rib 214B refers to an annular shape including the maximum outer diameter portion of the bottle formed in the circumferential direction of the bottle along the contact point, for example, an annular convex portion having a substantially semicircular cross section or a substantially trapezoidal cross section. FIG. 21B shows an enlarged cross-sectional view of the rib 214B. The shaded portion on the left side of the figure is the bottle body 210. In the present invention, the width of the rib 214B refers to a distance c from a point c1 to a point c2 where the inclination of the tangent line in the curve forming the rib shape is 45 °.

  FIG. 13A shows a form in which one rib 214B is formed on the lower side of the bottle body lower part 210B, and FIG. 13B shows two ribs 214B on the upper side and the lower side of the bottle body lower part 210B. Each formed form is shown. In this embodiment, the width of the rib 214B is 3 mm or more, preferably 5 mm or more, more preferably 6 mm or more, and can be formed in a range of 10 mm or less, preferably 8 mm or less, more preferably 7 mm or less. The ratio (b / a) between the diameter b of the rib 214B and the diameter a of the bottle body lower part 210B other than the rib 214B is preferably 1.015 or more, more preferably 1.020 or more, and still more preferably 1. 025 or more, preferably 1.050 or less, more preferably 1.045 or less, and further preferably 1.040 or less. In the present invention, since the thickness of the bottle main body lower part 210B is thin, by designing the rib 214B as described above, when line pressure is applied, the contact area between the adjacent bottles (hereinafter referred to as the above-mentioned The area may be referred to as a contact area.) And the line pressure strength can be increased.

  FIG. 14A shows a form in which two ribs 214B (1) and 214B (2) are formed on the lower side of the bottle body lower part 210B, and FIG. 14B shows an upper side of the bottle body lower part 210B. Each of the two ribs 214B (1) and 214B (2) is formed on the lower side. In this case, since the sum of the contact areas of the ribs is the contact area of the bottle, the line pressure resistance can be further improved. Further, by forming a plurality of ribs, there is an effect of improving the lateral rigidity, thereby further improving the line pressure resistance. The widths of the two ribs 214B (1) and 214B (2) are each 3 mm or more, preferably 5 mm or more, more preferably 6 mm or more, and 10 mm or less, preferably 8 mm or less, more preferably 7 mm or less. can do. The ratio (b / a) between the diameter b of each of the ribs 214B (1) and 214B (2) and the diameter a of the portion other than the ribs 214B (1) and 214B (2) of the bottle main body lower part 210B is preferable. It is 1.015 or more, More preferably, it is 1.020 or more, More preferably, it is 1.025 or more, Preferably it is 1.050 or less, More preferably, it is 1.045 or less, More preferably, it is 1.040 or less.

FIG. 15A shows a form in which a convex rib 214B is formed on the lower side of the bottle main body lower part 210B, and FIG. 15B shows that two convex ribs 214B are formed on the upper side and the lower side of the bottle main body lower part 210B. Each form is shown. Since the formed convex rib 214B is wide, the contact area becomes large. Further, due to the effect of reducing the wall thickness, the convex ribs 214B are deformed when line pressure is applied, so that the bottles 200 come into contact with each other in the whole bottle body, and the line pressure resistance can be further improved. . The width of the convex rib 214B is 3 mm or more, preferably 5 mm or more, more preferably 6 mm or more, and can be formed in a range of 10 mm or less, preferably 8 mm or less, more preferably 7 mm or less.
The ratio (b / a) between the diameter b of the convex rib 214B and the diameter a of the bottle body lower part 210B other than the convex rib 214B is preferably 1.015 or more, more preferably 1.020 or more, and still more preferably. 1.025 or more, preferably 1.050 or less, more preferably 1.045 or less, and further preferably 1.040 or less.

  FIG. 16A shows a form in which a contact area 216B is formed in the circumferential direction below the bottle body lower part 210B and an edge 218B is formed. FIG. 16B shows an upper side of the bottle body lower part 210B. The contact area 216B and the edge 218B are formed on the lower side and the lower side, respectively. In this embodiment, since the wide contact area 216B is formed in advance, the line pressure resistance is improved. Further, by adding the edge 218B, the lateral rigidity is improved, and the line pressure resistance is further improved. The width of the contact area 216B and the edge 218B is 3 mm or more, preferably 5 mm or more, more preferably 6 mm or more, and can be formed in a range of 10 mm or less, preferably 8 mm or less, more preferably 7 mm or less. The ratio (b / a) between the diameter b of the contact area 216B and the edge 218B and the diameter a of the portion other than the contact area 216B and the edge 218B of the lower portion 210B of the bottle body is preferably 1.015 or more, more preferably 1. It is 020 or more, More preferably, it is 1.025 or more, Preferably it is 1.050 or less, More preferably, it is 1.045 or less, More preferably, it is 1.040 or less.

  FIG. 17A shows a form in which a concave rib 214B is formed on the lower side of the bottle main body lower part 210B, and FIG. 17B shows a form in which concave ribs 214B are formed on the upper side and the lower side of the bottle main body lower part 210B. Each form is shown. When line pressure is applied, the thickness is reduced, so that the concave shape is flattened and flattened. Therefore, the contact area is expanded to improve the line pressure resistance, and when the line pressure is removed, the contact area is restored by the rib effect at both ends of the concave shape. The width of the concave rib 214B is 3 mm or more, preferably 5 mm or more, more preferably 6 mm or more, and can be formed in a range of 10 mm or less, preferably 8 mm or less, more preferably 7 mm or less. In addition, in the case of the concave rib 214B, there are a maximum of four portions where the inclination of the tangent line in the curve of the rib 214B is 45 ° diagonally, of which the uppermost and lowermost points are c1 and c2, and between them The distance was the width c of the rib 214B. The ratio (b / a) between the maximum diameter b of the concave rib 214B and the diameter a of the portion other than the concave rib 214B of the bottle main body lower part 210B is preferably 1.015 or more, more preferably 1.020. More preferably, it is 1.025 or more, preferably 1.050 or less, more preferably 1.045 or less, and further preferably 1.040 or less.

  FIG. 18A shows a form in which a polygon type rib 214B is formed, and FIG. 18B shows a form in which a polygon type rib 214B is formed on the upper side and the lower side of the lower part 210B of the bottle body. FIG. 18C is a cross-sectional view taken along the line II-II in FIG. The polygon-type rib 214B bulges the lower side of the lower portion 210B of the bottle main body to the outer peripheral side to form an annular bulging portion that becomes a maximum outer diameter portion, and this annular bulging portion is directed toward the center of the bottle. It is a concave curved concave surface, and a long side concave surface portion having a long circumferential length and a short side concave surface portion having a short circumferential length are alternately formed. The long side concave surface portion and the short side concave surface portion are curved concave surfaces that are recessed inward of the bottle, and both end sides intersecting with the adjacent concave surface portions are corner portions protruding outward of the bottle. The corner portion itself functions as a reinforcement, and the curved concave surface continuous in the circumferential direction across the corner portion functions as a reinforcement similar to the concave rib. For this reason, the mechanical strength of the contact point is increased, and the rigidity of the contact point can be increased.

  In addition, by forming the annular bulging portion serving as a contact point in a substantially trapezoidal longitudinal section, stretching at the time of blow molding can be performed smoothly, and the contact point can be formed with a uniform thickness over the entire circumference of the contact point. . Then, by forming the long side concave surface portion and the short side concave surface portion in the annular bulging portion, a corner portion is formed at the boundary between each concave surface portion and the upper and lower inclined wall surfaces, which reinforces against deformation by deformation. Therefore, the mechanical strength of the contact point is further increased.

(Buckling strength)
The buckling strength at 23 ° C. after filling of the bottle with handle 200 of the present invention is preferably at least 392N. The buckling strength (vertical load strength) was measured according to the following procedure. That is, normal temperature water (23 ± 2 ° C.) is filled in the bottle 200 with a handle in accordance with the inner volume of the bottle, and 1.5 liters to 2.0 liters are filled with the cap. Then, the bottle is compressed at a speed of 100 mm / min vertically downward from the top surface of the bottle cap. The load (N) when the bottle was buckled was defined as the buckling strength (vertical load strength). By providing such buckling strength, it is possible to prevent the bottle with handle from being buckled and deformed when a force in the vertical direction is applied to the bottle with handle.

  When a bottle with a handle is filled and sealed with soy sauce, millin, etc., packed in a cardboard box, and stored or transported in multiple layers in the vertical direction, the load of the cardboard box loaded on the upper level is the lower level. Since it is added to the bottle with the handle in the box, the handle mounting recess of the bottle with the handle packed in the lower cardboard box may be buckled and deformed so that the upper part of the bottle falls to the handle side.

  This buckling deformation will be described with reference to FIG. FIG. 19A is a side view of a conventional bottle, and FIG. 19B is a cross-sectional view taken along line III-III in FIG. When the preform is stretched and the handle-equipped bottle is blow-molded, the maximum outer diameter portion X2 having a large radial stretching ratio is thin. Further, when the wall surface of the handle mounting recess 230 is a curved convex surface 231 that gently bulges from both side edge portions toward the center, the central portion Y1 of the curved convex surface 231 becomes thick because the radial extension is small, Both side edges Y2 of the curved convex surface 231 having a large extension are thin.

  For this reason, when a vertical load W is applied from above to such a conventional bottle, the load W is applied to the thinned portion X2 via the handle 100, and thus the side edges Y2 thinned from this portion X2. Sometimes buckled. At this time, since the central portion Y1 of the thick curved convex surface 231 is not buckled and deformed, the thinned portion X2 and the side edge portions Y2 are buckled and deformed with the central portion Y1 serving as a fulcrum. As indicated by the arrow R, the upper part may be deformed so as to fall to the handle side.

  In the present invention, the rigidity of both side edge portions Y2 of the curved convex surface 231 formed in the concave portion 230 for attaching the handle is ensured, and the load concentrated on the lower portion of the handle, that is, the thinned maximum outer diameter portion X2, is dispersed. In order to increase the bending strength and prevent the handle mounting recess 230 from buckling even when a vertical load is applied from above, various reinforcing means are formed in the handle mounting recess 230. Thereby, the bottle 200 with a handle of this invention is provided with the buckling strength of the above-mentioned preferable range, and buckling deformation is prevented.

  Various reinforcing means will be described with reference to FIGS. 8 and 11B. As various reinforcing means, the curved convex surface 231 formed so that the wall surface of the concave portion 230 for grip attachment gently bulges toward the center from both side edge portions, and the center to which the handle 100 of the curved convex surface 231 is attached. The bulging protrusions 236 and 238 provided at the upper and lower positions can be exemplified. That is, the bulging protrusion 236 is provided below the part to which the upper support arm 22 is attached, and the bulging protrusion 238 is provided above the part to which the lower support arm 24 is attached. The bulging protrusions 236 and 238 can be provided continuously in the vertical direction. By forming the bulging protrusions 236 and 238, the handle 100 is firmly fixed to the wall surface of the handle mounting recess 230, and the curved convex surface 231 is reinforced to increase the rigidity.

  Further, as reinforcing means, reinforcing ribs 234A and 234B provided in the vicinity of both side edges of the curved convex surface 231 and extending in the vertical direction can be exemplified. In the illustrated form, raised surfaces 232A and 232B bulging in a platform shape are formed at left and right symmetrical positions on both sides of the curved convex surface 231, and the raised surfaces 232A and 232B adjacent to both side edges of the curved convex surface 231 are formed. Reinforcing ribs 234A and 234B extending in the vertical direction are formed by the step portions.

  The reinforcing ribs 234A and 234B reinforce the curved convex surface 231 and prevent the curved convex surface 231 from being buckled and deformed by a vertical load applied from above. As a result, both side edge portions of the curved convex surface 231 are reinforced to increase rigidity, and a load applied to the lower portion of the curved convex surface 231 via the handle 100 is dispersed to improve buckling strength. And it is prevented that the handle attachment recessed part 230 carries out buckling deformation by the vertical load added from upper direction. Further, coupled with the fact that the upper and lower positions of the handle 100 are reinforced by the bulging protrusions 236 and 238, the rigidity of the curved convex surface 231 is ensured, and the buckling strength in the vertical direction is remarkably improved.

<The manufacturing method of the bottle 200 with a handle of this invention>
A suitable example of the manufacturing method of the bottle with handle 200 of the present invention will be described with reference to FIG. The bottle with a handle 200 of the present invention is obtained by previously forming the handle 100 separately from the bottle main body 210 by a method such as injection molding, and integrating both in the blow molding process of the bottle main body 210. Manufactured.

  The bottle body 210 of the present invention is formed by first forming a tubular material (hereinafter referred to as “preform”), which is an intermediate product, by injection molding using a plastic, for example, a polyester resin typified by polyethylene terephthalate. The preform is obtained by setting the preform in a blow molding die in a state where it is heated to a stretching temperature, for example, from 90 ° C. to 120 ° C. in the case of polyethylene terephthalate, and blowing high pressure air into the preform to obtain a biaxial stretch blow molding. . In the present invention, the handle 100 may be a polyester resin represented by polyethylene terephthalate, polypropylene, polyethylene, or the like. In particular, it is preferable to use the same polyester resin as the bottle body as the material of the handle body, because it can be treated together with the body when recovered and recycled, and a recycled resin can be used as the handle body. .

  As shown in FIG. 20, a mold 260 used for blow molding is composed of a bottom mold 262 that can be drawn upward in the drawing and a neck forming mold (not shown). A mold 264 for forming a handle mounting recess 230 is formed on the side surface of the mold 260. The handle 100 is set on the mold 264 in a state where the tip portions of the support arms 22 and 24 of the handle 100 are exposed in the mold. The mold 260 is provided with a shape for forming the rib 214B, such as the reinforcing means 232 and 234 of the handle mounting recess 230 described above.

Example 1
A bottle attachment handle 100A in which the upwardly extending portion 40 shown in FIGS. 1 to 4 was formed was produced by injection molding. 2 to 4, the height L1 of the upper extension 40 is 2 mm, the total length L2 in the vertical direction is 94.6 mm, and the height L3 of the protrusion 62 of the upper support arm 22 is 4.3 mm. The height L4 of the protrusion 64 of the lower support arm 24 is 3 mm, and the thickness L5 of the protrusions 62 and 64 is 3 mm. Further, the maximum width W1 in the left-right direction is 20 mm, the width W2 in the left-right direction of the rear plate 14 of the constricted portion 50 is 4 mm, the width W3 in the left-right direction of the front plate 12 of the constricted portion 50 is 10 mm, The width W4 is 14 mm, and the thickness W5 of the grip portion in the front-rear direction is 7.6 mm. Further, the upper support arm 22 has a taper with a taper angle θ of 8.5 °, the width Z1 in the forward direction of the taper is 17 mm, the width Z2 in the rearward direction of the taper is 13 mm, and the length Z3 in the front-rear direction is 16 mm. It is. The mass of the produced bottle mounting handle 100A was 10.2 g.

  Using the produced bottle mounting handle 100A, the shape shown in FIGS. 8 to 11 is 300 mm in height, the outer diameter of the straight body portion is 103.5 mm, the inner volume is 1865 ml, the outer diameter of the rib 214B is 106 mm, and the rib 214B. A bottle with a handle having a width of 6 mm was produced by blow molding.

(Example 2)
A bottle mounting handle 100D shown in FIG. 6 was produced by injection molding. Compared with the handle 100A, the handle 100D has a different taper shape of the upper support arm 22, but the other shapes are the same. The taper of the upper support arm 22 of the handle 100D is such that the taper angle θ is 4.3 °, the width Z1 in the taper front direction is 20 mm, the width Z2 in the taper rear direction is 17.5 mm, and the length Z3 in the front-rear direction. 20 mm. The mass of the produced bottle mounting handle 100D was 11.3 g.
A bottle with a handle was produced by blow molding in the same manner as in Example 1 using the produced bottle attachment handle 100D.

(Comparative Example 1)
The conventional handle for attaching a bottle shown in FIGS. 22A to 22C was produced by injection molding. Each of the dimensions shown in FIGS. 22A to 22C is such that the height L1 of the upper extending portion 40 is 16.4 mm, the total length L2 in the vertical direction is 94.6 mm, and the height of the protruding portion 62 of the upper support arm 22 is as follows. The length L3 is 4.3 mm, the height L4 of the protrusion 64 of the lower support arm 24 is 3 mm, and the thickness L5 of the protrusions 62 and 64 is 3 mm. Moreover, the width W1 of the left-right direction is 20 mm, and the constriction part is not formed. The thickness W5 of the grip portion 10 in the front-rear direction is 7.6 mm. Further, the upper support arm 22 and the lower support arm 24 are not tapered. The mass of the produced conventional handle 110 for attaching a bottle was 14.5 g. Note that L1 to L6, W1, and W5 indicate the same positions as those in FIGS.
A bottle with a handle was produced by blow molding in the same manner as in Example 1 using the produced conventional handle for attaching a bottle.

(Comparative Example 2)
Using the same conventional handle as in Comparative Example 1, the conventional bottle shown in FIG. 22 (b) has a height of 300 mm, an outer diameter of the straight body portion of 103.5 mm, an inner volume of 1865 ml, and an outer diameter of the contact point. A bottle with a handle having 106 mm and no ribs at the contact point was produced by blow molding.

<Evaluation Method I>
The following evaluation was performed on the bottles with the grips produced in the above-described Example 1, Example 2, and Comparative Example 1. In addition, two types of bottles with a handle were each produced using two types (62g and 50g) from which mass differs as a preform of a bottle.

(Hand fitting strength)
The produced bottle with a handle was filled with 1.8 liters of room temperature water at 23 ° C. and capped. Then, the bottle was laid down and fixed, and a position of 125 mm from the top of the bottle cap was pulled at a speed of 500 mm / min. And the load (N) when a handle removed was measured, and this was made into fitting strength. The results are shown in Table 1.

(Vertical drop test)
The produced bottle with a handle was filled with 1.8 liters of room temperature water at 23 ° C. and capped. The bottle was dropped from a state where the height (H) from the floor surface to the bottom surface of the bottle was 90 cm with the bottle standing vertically. When troubles such as detachment of the handle, cracking of the handle, and cracking of the bottle did not occur, the same drop test was performed using the same bottle with a height (H) of 120 cm. If no further malfunction occurred, the drop test was repeated at a height (H) of 150 cm and further 180 cm. If there was a bottle defect at each height, the test was terminated at that point. The results are shown in Table 2.

  (result)

  When the grips 100A and 100D of the present invention were used (Examples 1 and 2), it was found that the grip fitting strength was greatly improved as compared with the conventional grips.

  The grips 100A and 100D (Examples 1 and 2) of the present invention showed better results in the vertical drop test than the conventional handles.

<Evaluation Method II>
The following evaluation was performed on the bottle with a filling handle prepared in Example 1 and Comparative Example 2 described above.
(Buckling strength)
The produced bottle with a handle was filled with 1.8 liters of room temperature water at 23 ° C. and capped. And the bottle was compressed at a speed of 100 mm / min vertically downward from the top of the bottle cap. And the load (N) when a bottle buckled was measured, and this was made into buckling strength (vertical load strength).

(Resistant line pressure strength)
Three prepared bottles with a handle were prepared, and each was filled with 1.8 liters of room temperature water at 23 ° C. These three bottles were vertically arranged in a line between a support plate and a pressing plate arranged to face each other in parallel. At this time, it arranged so that the contact point of an adjacent bottle may contact. Then, press the pressing plate toward the supporting plate with the supporting plate and the pressing plate in contact with the side surfaces of the bottles at both ends aligned in a row, and sit on the wall surface (contact point) of the center bottle. The pressing force (N) of the pressing plate when bending deformation (crushing) occurred was measured, and this was taken as the line pressure resistance strength of the central bottle.

  From Table 3, the bottle with a handle according to the present invention has a conventional bottle having a buckling strength and a fitting strength in spite of a light weight of the bottle and a thin average thickness at the bottom of the bottle body and a thin thickness at the contact point. Since it is larger and the line pressure resistance is 70 N or more on average, it is possible to sufficiently suppress deformation during conveyance.

  While the present invention has been described in connection with embodiments that are presently the most practical and preferred, the present invention is not limited to the embodiments disclosed herein. However, the present invention can be changed as appropriate without departing from the scope or spirit of the invention that can be read from the claims and the entire specification, and the bottle mounting handle and the bottle with the handle with such changes are also within the technical scope of the present invention. Must be understood as encompassed by.

It is a perspective view of the handle 100A for bottle attachment of this invention. (A) is a left side view of the handle 100A for attaching a bottle of the present invention, (b) is a front view, (c) is a plan view, and (d) is a bottom view. It is a top view of the handle 100A for bottle attachment of this invention. (A) is the sectional view on the AA line of Fig.2 (a), (b) is the sectional view on the BB line of Fig.2 (a). (A) is a left side view of the bottle mounting handle 100B of the present invention, and (b) is a left side view of the bottle mounting handle 100C of the present invention. (A) is a top view of the handle 100D for attaching a bottle of the present invention, (b) is a left side view, and (c) is a bottom view. (A) is a top view of the handle 100E for attaching a bottle of the present invention, (b) is a left side view, (c) is a bottom view, and (d) is a front view. It is a rear view of the bottle with a handle of the present invention. It is a side view of the bottle with a handle of the present invention. It is a front view of the bottle with a handle of the present invention. (A) is the sectional view on the AA line in FIG. (B) is the BB sectional view taken on the line in FIG. It is the II sectional view taken on the line of FIG. It is a figure which shows embodiment of the rib 214B. It is a figure which shows embodiment of the rib 214B. It is a figure which shows embodiment of the rib 214B. It is a figure which shows embodiment of the rib 214B. It is a figure which shows embodiment of the rib 214B. It is a figure which shows embodiment of the rib 214B. (A) is a side view of a bottle with a handle for explaining buckling strength. (B) is the III-III sectional view taken on the line in (a). It is the metal mold | die 260 for blow molding for manufacturing the bottle with a handle of this invention. (A) is an expanded sectional view of the concave grooves 216A and 212B. (B) is an expanded sectional view of the rib 214B. (A) is a top view of the handle of the conventional shape. (B) is a left side view. (C) is a bottom view. (D) is a bottle with a handle in which a handle having a conventional shape is attached to a bottle body having a conventional shape.

Explanation of symbols

100A, 100B, 100C, 100D Bottle mounting handle 10 Grip part 22 Upper support arm 22c Taper 24 Lower support arm 40 Upper extension part
50 Constricted part 62, 64 projecting part 210 Bottle body 210A Bottle body upper part 210B Bottle body lower part 214B Rib 230 Recess for grip attachment

Claims (10)

A grip, comprising a top support arm and a bottom support arm projecting from the top and bottom of the grip part toward the plastic bottle body , and a handle for attaching to the plastic bottle via the top support arm and the bottom support arm. And
The upper support arm, the lower support arm, or the upper support arm and the lower support arm are tapered so that the width of the support arm becomes narrower from the tip of the support arm toward the grip. ,
When the upper support arm is provided with an upper extending portion extending above the grip portion from a position where the upper support arm branches off from the grip portion, the upper support arm extends upward from the upper surface when the upper surface of the upper support arm is horizontal. A handle for attaching a plastic bottle , the height of which is 15 mm or less .   The handle for attaching a plastic bottle according to claim 1, wherein a taper angle of the taper is 4 ° or more and 20 ° or less. The handle for attaching a plastic bottle according to claim 1 or 2 , wherein the grip portion includes a constricted portion at least in part. The handle for attaching a plastic bottle according to any one of claims 1 to 3 , further comprising a projecting portion formed so as to project upward at tips of the upper support arm and the lower support arm. A plastic bottle body is provided, and a handle mounting recess is formed on the upper side of the bottle body, and the plastic bottle mounting handle according to any one of claims 1 to 4 is mounted in the handle mounting recess. Plastic bottle with handle configured. The plastic bottle with a handle according to claim 5 , wherein the filling capacity is 1.5 liters or more and 2.0 liters or less. The plastic bottle with a handle according to claim 6 , wherein a fitting strength at 23 ° C of the handle is at least 245N. The mass of the entire plastic bottle with the handle is 54 g or more and 73 g or less, and the average thickness of the lower part of the plastic bottle body below the portion to which the lower support arm is attached is 0.22 mm or more and 0.40 mm or less. Item 8. A plastic bottle with a handle according to Item 6 or 7 . The plastic bottle with a handle according to claim 8 , wherein a buckling strength (vertical load strength) at 23 ° C after filling is at least 392N. The plastic bottle with a handle according to claim 8 or 9 , wherein the line pressure resistance at 23 ° C is at least 40 N.

Images