JP2014037269A - Plastic bottle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a plastic bottle in which a holding part can be easily held, the holding part is not conspicuous outside, strength in the vertical direction is improved.SOLUTION: A plastic bottle 10 includes a mouth 11, a shoulder 12, a barrel part 20 and a bottom 30. The barrel part 20 has four side faces 21 and barrel part interfaces 22 positioned between the side faces 21, and provided with a horizontal concave rib 24 composed of side face horizontal concave ribs 24a arranged in each side face 21 and interface horizontal concave ribs 24b arranged in each barrel part interface 22. The shoulder 12 has a dome-like shape curved so that an outer edge of a cross section including the bottle axial direction protrudes outside, a plurality of pressure absorbing panels 23 are arranged side by side in the vertical direction in an upper region 21a and a lower region 21b of each side face 21. Pressure absorbing panels 23a and 23b in the vicinity of the side face horizontal concave rib 24a function as a holding panel.

Description

  The present invention relates to a plastic bottle that can easily grip a gripping portion and improve the aesthetics of the bottle and the strength in the vertical direction.

  Recently, plastic bottles for beverages and the like have become common, and the plastic bottle is provided with a grip portion that can be easily gripped.

  Incidentally, the body portion of the plastic bottle is provided with horizontal concave ribs that divide the body portion upward and downward, and generally the gripping portion is provided within the horizontal concave rib.

  However, it is difficult to fit the gripping part in the horizontal concave rib, and the gripping part extends and extends upward or downward from the horizontal concave rib, thereby deteriorating the appearance of the body part.

  On the other hand, the plastic bottle is required to improve the strength in the vertical direction.

Japanese Utility Model Sho 56-118806

  The present invention has been made in consideration of such points, and has a grip portion for easily gripping, the grip portion does not stand out outwardly, and the aesthetics of the bottle and the strength in the vertical direction are improved. An object is to provide a plastic bottle that can be improved.

  The present invention provides a plastic bottle comprising a cylindrical mouth portion, a polygonal cylindrical trunk portion, a shoulder portion disposed between the mouth portion and the trunk portion, and a bottom portion below the trunk portion, Each having a plurality of side surfaces and a body boundary surface located between the side surfaces, provided on each side surface of the body portion, and a side horizontal concave rib that divides the side surface into an upper region and a lower region, and each body portion A horizontal concave rib formed of a horizontal horizontal concave rib provided on the boundary surface is formed, and the shoulder has a curved dome shape so that the outer edge of the cross section including the axis of the bottle protrudes outward, and above each side surface In the region or the lower region, a plurality of pressure absorbing panels are arranged in the vertical direction, and the pressure absorbing panel near the side horizontal concave rib functions as a gripping panel.

  In the present invention, the shoulder portion having a dome shape has a shoulder inclined surface corresponding to the side surface and a shoulder boundary surface corresponding to the trunk boundary surface, and the shoulder inclined surface is an elongated shape that is drawn inwardly. The plastic bottle is characterized in that a trough is provided, and an elongated trough that is drawn inwardly is provided on a shoulder boundary surface.

  In the present invention, the shoulder portion having a dome shape has a shoulder inclined surface corresponding to the side surface and a shoulder boundary surface corresponding to the trunk boundary surface, and the upper portion of the shoulder portion has a circular horizontal cross section, The portion between the upper part and the lower part of the part has a polygonal horizontal section consisting of twelve vertices, and the annular inclined surface between the shoulder part and the trunk part has a polygonal horizontal section consisting of eight vertices. It is a plastic bottle.

  The present invention is the plastic bottle characterized in that the body portion has a rectangular tube shape and thereby has four side surfaces.

  According to the present invention, a plurality of pressure absorbing panels are arranged vertically in the upper region or lower region of each side surface, and the pressure absorbing panel near the side horizontal concave rib functions as a gripping panel. There is no need to provide a particularly conspicuous gripping portion. Further, since the shoulder portion has a dome shape that is curved so that the outer edge of the cross section including the bottle axis protrudes outward, the strength of the plastic bottle as a whole can be improved by the dome shape shoulder portion. Further, since the elongated valleys are formed on the shoulder inclined surface and the shoulder boundary surface of the shoulder, it is possible to improve the beauty of the bottle and the strength in the vertical direction.

FIG. 1 is a side view showing a plastic bottle according to an embodiment of the present invention. FIG. 2 is a side view of the plastic bottle according to the embodiment of the present invention as seen from an angle different from that in FIG. FIG. 3 is a plan view showing a plastic bottle according to an embodiment of the present invention. FIG. 4 is a bottom view showing a plastic bottle according to an embodiment of the present invention. FIG. 5 is a side view showing a plastic bottle according to a modification of the present invention. FIG. 6 is a side view showing a plastic bottle according to a modification of the present invention as seen from an angle different from FIG. FIG. 7 is a plan view showing a plastic bottle according to a modification of the present invention.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. 1 to 4 are views showing an embodiment of the present invention.

  First, the outline of the plastic bottle according to the present embodiment will be described with reference to FIGS.

  The plastic bottle 10 has an internal volume of 1 l or less (1000 cc or less), a mouth part 11, a shoulder part 12 provided below the mouth part 11, a trunk part 20 provided below the shoulder part 12, and a trunk part. 20 and a bottom portion 30 provided below.

  Among these, the trunk | drum 20 has the four side surfaces 21 which become the mutually same shape, and consists of a square cylinder shape as a whole. In addition, a flat body boundary surface 22 is formed between adjacent side surfaces 21.

  Moreover, the four side surfaces 21 of the trunk | drum 20 are divided into the upper area | region 21a and the lower area | region 21b through the side surface horizontal concave rib 24a drawn inward (inward of the bottle 10). Each body boundary surface 22 is also divided into an upper region 22a and a lower region 22b via a boundary surface horizontal concave rib 24b that is drawn inward (inward of the bottle 10).

  Among these, the horizontal concave rib 24 is comprised by the side surface horizontal concave rib 24a and the boundary surface horizontal concave rib 24b.

  In addition, a plurality of flat plate-like pressure absorbing panels 23 are provided in the upper region 21a and the lower region 21b of each side surface 21 of the trunk portion 20, and the pressure absorbing panel 23 causes the plastic bottle 10 to expand and decompress. The pressure applied to the plastic bottle 10 is absorbed.

  In the present embodiment, two pressure absorption panels 23 are arranged in the vertical direction in the upper region 21a of each side surface 21 of the body portion 20, and four pressure absorption panels 23 are arranged in the vertical direction in the lower region 21b. Is provided.

  Among these, the pressure absorbing panel near the side horizontal concave rib 24a, for example, the pressure absorbing panel 23a in the upper region 21a or the pressure absorbing panel 23b in the lower region 21b functions as a gripping panel, and a user is placed in these pressure absorbing panels 23a and 23b. You can wear your fingers.

  Furthermore, the bottom portion 30 has a peripheral edge portion 31 and a central portion 32 that is located inside the peripheral edge portion 31 and lifted upward from the peripheral edge portion 31, and a circle is provided between the central portion 32 and the peripheral edge portion 31. A circumferentially extending intermediate portion 33 is interposed.

  Next, the configuration of the shoulder 12 of the plastic bottle 10 will be described in detail with reference to FIGS. 1, 2, and 3.

  As shown in FIGS. 1, 2 and 3, the shoulder portion 12 of the plastic bottle 10 is formed between the mouth portion 11 and the trunk portion 20, and has four shoulder inclined surfaces 12A. The outer edge of the cross section including the axis line L of the bottle has a curved dome shape so as to protrude outward.

  The shoulder 12 having a dome shape has a circular horizontal cross section at the top cut at the cross section A, a portion between the top and the bottom cut at the cross section B has a polygonal horizontal cross section, and the shoulder 12 cut at the cross section C. An annular inclined surface 13 between the body 20 and the body 20 has a polygonal horizontal cross section consisting of eight vertices.

  A shoulder boundary surface 12B is formed between the shoulder inclined surfaces 12A. Of these, each shoulder inclined surface 12 </ b> A is formed corresponding to the side surface 21 of the trunk portion 20, and each shoulder boundary surface 12 </ b> B is formed corresponding to the trunk portion boundary surface 22 of the trunk portion 20.

  Each shoulder inclined surface 12A is provided with a plurality of elongated valleys 16 that are drawn inward and have a triangular cross section, and each shoulder boundary surface 12B is drawn inward and has an elongated valley that has a triangular cross section. Part 15 is provided.

  By the way, the four elongated valleys 16 formed on each shoulder inclined surface 12A and the elongated valleys 15 formed on each shoulder boundary surface 12B are radially arranged as a whole on the plane (FIG. 3). reference).

  Further, an annular inclined surface 13 that extends in the horizontal direction and is inclined is formed between the shoulder portion 12 and the trunk portion 20, and the four elongated valley portions 16 provided on each shoulder inclined surface 12 </ b> A include This annular inclined surface 13 is drawn inward. Further, the elongated valley 15 provided on each shoulder boundary surface 12B is drawn inward with the annular inclined surface 13 as a reference.

  As described above, a plurality of pressure absorbing panels 23 are provided in the upper region 21a and the lower region 21b of each side surface 21 of the trunk portion 20, and among these pressure absorbing panels 23, on the upper region 21a side in the vicinity of the side horizontal concave rib 24a. The pressure absorption panel 23a and the pressure absorption panel 23b on the lower region 21b side function as a gripping panel.

  As described above, the pressure absorbing panel 23a on the upper region 21a side and the pressure absorbing panel 23b on the lower region 21b side in the vicinity of the side horizontal concave rib 24a provided on each side surface 21 of the trunk portion 20 can be used as gripping panels. In addition, it is not necessary to provide a grip portion that stands out outwardly on each side surface 21.

  By the way, a technology for gripping a plastic bottle by providing a grip portion in a horizontal concave rib on the side surface of a plastic bottle has also been developed. It is. In this case, since the gripping portion protrudes and extends upward or downward from the side horizontal concave rib, the gripping portion becomes conspicuous in terms of the appearance of the body portion, which is not preferable in appearance.

  On the other hand, according to the present invention, the pressure absorbing panel 23a on the upper region 21a side and the pressure absorbing panel 23b on the lower region 21b side in the vicinity of the side horizontal concave ribs 24a provided on each side surface 21 are used as gripping panels. Therefore, it is not necessary to provide a grip portion that stands out outwardly on each side surface 21.

  Such a plastic bottle 10 can be produced by biaxially stretch blow molding a preform produced by injection molding a synthetic resin material. In addition, it is preferable to use a thermoplastic resin, especially PE (polyethylene), PP (polypropylene), PET (polyethylene terephthalate), PEN (polyethylene naphthalate) as a material of the preform, that is, the plastic bottle 10.

  The plastic bottle 10 can also be formed as a multilayer molded bottle having two or more layers. That is, by extrusion molding or injection molding, for example, the intermediate layer has gas barrier properties and light shielding properties such as MXD6, MXD6 + fatty acid salt, PGA (polyglycolic acid), EVOH (ethylene vinyl alcohol copolymer) or PEN (polyethylene naphthalate). A multilayer bottle having gas barrier properties and light shielding properties may be formed by extrusion molding a preform composed of three or more layers as the resin (intermediate layer), and then blow molding. Such an intermediate layer is preferably provided in at least the body 20 of the plastic bottle 10. Further, it is preferable to provide an intermediate layer in the region of the bottom portion 30 excluding the central portion of the bottom portion 30. This is because this portion may cause delamination (delamination) when subjected to an impact such as a case dropping. In order to have gas barrier properties and light shielding properties, a blend bottle in which thermoplastic resins are blended may be formed as well as multilayers.

  Next, the operation of the present embodiment having such a configuration will be described.

  First, the plastic bottle 10 is filled with a content liquid such as green tea or coffee, and then sealed.

  In this case, the content liquid is filled into the plastic bottle 10 in a state where the central portion 32 of the bottom 30 of the plastic bottle 10 is pushed up by a push rod (not shown). Next, the mouth portion 11 is sealed with a cap (not shown).

  The plastic bottles 10 filled with the content liquid are stacked and stored or transported. For this reason, a large load may be applied to the plastic bottle 10 filled with the content liquid in the vertical direction during storage or transportation.

  According to the present invention, since the shoulder portion 12 has a dome shape curved so that the outer edge of the cross section including the axis L of the bottle as a whole protrudes outward, the dome shape of the shoulder portion 12 improves the vertical strength. be able to. In addition, four elongated valleys 16 are provided on each shoulder inclined surface 12A of the shoulder 12, and elongated valleys 15 are provided on each shoulder boundary surface 12B. The elongated valleys 16 and the elongated valleys 15 are provided. Are formed so as to have a radial shape on the plane, the elongated valley 16 and the elongated valley 15 function as reinforcing ribs with respect to the load applied to the shoulder 12. For this reason, the load of the up-down direction added to the shoulder part 12 can be received reliably by these elongate valley part 16 and the elongate valley part 15, and the intensity | strength along the up-down direction of the shoulder part 12 can further be improved. Further, the slender valley portions 15 and 16 can improve the aesthetics of the bottle.

  Furthermore, since the pressure absorbing panels 23a and 23b in the vicinity of the side horizontal concave ribs 24a provided on each side surface 21 can be used as a gripping panel, it is not necessary to provide a grip portion that stands out outwardly on the side surface 21.

  Next, modified examples of the present invention will be described with reference to FIGS. The modified examples shown in FIGS. 5 to 7 differ only in the configuration of the shoulder portion 12 of the plastic bottle 10, and the other configurations are substantially the same as those of the embodiment shown in FIGS.

  In the modification shown in FIGS. 5 to 7, the same parts as those in the modification shown in FIGS.

  As shown in FIGS. 5, 6, and 7, the shoulder portion 12 of the plastic bottle 10 is formed between the mouth portion 11 and the body portion 20, and has four shoulder inclined surfaces 12 </ b> A. The outer edge of the cross section including the axis line L of the bottle has a curved dome shape so as to protrude outward.

  The shoulder 12 having a dome shape has a circular horizontal cross section at the top cut at the cross section A, a polygonal horizontal cross section having 12 apexes between the top and the bottom cut at the cross section B, and a cross section C at the cross section C. The annular inclined surface 13 between the cut shoulder portion 12 and the trunk portion 20 has a polygonal horizontal cross section consisting of eight vertices.

  A shoulder boundary surface 12B is formed between the shoulder inclined surfaces 12A. Of these, each shoulder inclined surface 12 </ b> A is formed corresponding to the side surface 21 of the trunk portion 20, and each shoulder boundary surface 12 </ b> B is formed corresponding to the trunk portion boundary surface 22 of the trunk portion 20.

DESCRIPTION OF SYMBOLS 10 Plastic bottle 11 Mouth part 12 Shoulder part 12A Shoulder inclined surface 12B Shoulder boundary surface 13 Annular inclined surface 15 Elongated valley 15a Tapered 16 Elongated valley 20 Body 21 Side surface 21a Upper region 21b Lower region 22 Boundary surface 23 Panel part 24 Horizontal concave rib 24a Side horizontal concave rib 24b Boundary horizontal concave rib 30 Bottom

Claims (4)

In plastic bottles,
A cylindrical mouth,
A polygonal tubular body;
A shoulder disposed between the mouth and the torso;
A bottom portion below the trunk,
The body portion has a plurality of side surfaces and a body boundary surface located between the side surfaces, and is provided on each side surface of the body portion so as to divide the side surface into an upper region and a lower region, and side horizontal concave ribs, A horizontal concave rib formed of a boundary horizontal concave rib provided on the body boundary surface is formed,
The shoulder has a dome shape that is curved so that the outer edge of the cross section including the axis of the bottle protrudes outward, and a plurality of pressure absorbing panels are arranged in the vertical direction in the upper region or lower region of each side surface. A plastic bottle characterized in that the pressure absorbing panel near the horizontal concave rib functions as a gripping panel.   The dome-shaped shoulder has a shoulder inclined surface corresponding to the side surface and a shoulder boundary surface corresponding to the torso boundary surface, and the shoulder inclined surface is provided with an elongated valley portion that is drawn inward. The plastic bottle according to claim 1, wherein an elongated valley portion that is drawn inward is provided on the shoulder boundary surface.   The shoulder having a dome shape has a shoulder inclined surface corresponding to the side surface and a shoulder boundary surface corresponding to the torso boundary surface, and the upper portion of the shoulder portion has a circular horizontal cross section, from the upper portion of the shoulder portion. The portion between the lower portions has a polygonal horizontal cross section having 12 vertices, and the annular inclined portion between the shoulder portion and the trunk portion has a polygonal horizontal cross section having 8 vertices. Plastic bottle.   The plastic bottle according to any one of claims 1 to 3, wherein the body portion has a rectangular cylindrical shape, thereby having four side surfaces.

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