JP6535534B2 - Bottle with a corrugated circumferential groove formed on the body - Google Patents

Description

  The present invention relates to a bottle.

  As a bottomed cylindrical bottle made of a synthetic resin material, a corrugated circumferential groove is conventionally formed in the body in a corrugated form extending periodically along the circumferential direction while being bent in the vertical direction in a side view A configuration that has been described is known (see, for example, Patent Document 1).

JP, 2015-085986, A

  However, in such a bottle, at the time of pressure reduction in the bottle, deformation may occur to such an extent that restoration deformation is not possible near the top of the waveform circumferential groove.

  This invention is made in view of the above-mentioned subject, and an object of the present invention is to provide a bottle which can control generating of an impossible deformation which can not be restored to a body at the time of decompression in a bottle.

The present invention adopts the following means in order to solve the problems as described above. That is, the bottle of the present invention is a bottle formed of a synthetic resin material in a bottomed cylindrical shape, and the body portion has the bottle viewed from the outside in the radial direction orthogonal to the bottle axis. a waveform circumferential groove exhibits a wave shape extending along a circumferential direction of the bottle axis while bent in the axial direction, the waveform peripheral grooves of the consolidated be Rutotomoni the barrel to the top of the waveform peripheral grooves is located An auxiliary rib positioned on the outer side in the axial direction of the bottle with respect to the circumferential band portion is formed , the waved circumferential groove is formed in a plurality adjacently in the axial direction of the bottle, and the auxiliary rib is It is characterized by being connected with the top adjacent to the other above-mentioned waved groove part which adjoins the above-mentioned bottle axial direction among one above-mentioned wave circumference groove, and it estranges from the other waved groove part .

  In the present invention, by providing the auxiliary rib connected to or close to the top of the waved circumferential groove, a portion of the barrel continuously communicates with the top of the waved circumferential groove from the outside in the bottle axial direction Even if deformation occurs (hereinafter referred to as the vicinity of the top), it is easy to restore and deform it, and it is possible to suppress the occurrence of deformation in the body that can not be restored and deformed.

Further, the bottles of the invention, the depth of the waveform peripheral grooves, in the circumferential direction of circling the bottle axis, also the auxiliary ribs of the waveform peripheral grooves shallower gradually toward the top you consolidated Good.
In this case, by making the depth of the corrugated circumferential groove shallow toward the top, restoration deformation in the vicinity of the top becomes even easier, and it is more reliable that deformation of the trunk can not occur. Can be suppressed.

Further, the bottles of the invention, a plurality of the waveform peripheral grooves, may be made form by aligning position phase.
In this invention, since the auxiliary rib of one corrugated circumferential groove is not connected to the other corrugated circumferential groove adjacent in the bottle axial direction, the influence of the deformation generated in the vicinity of the top of the one corrugated circumferential groove is through the auxiliary rib It is possible to suppress the extension to the other waveform circumferential groove, and to further reliably suppress the occurrence of the deformation in which the restoring deformation is impossible to the body.

  According to the bottle according to the present invention, it is possible to suppress the occurrence of deformation that can not be restored and deformed on the body when the pressure in the bottle is reduced.

It is a side view showing a bottle concerning one embodiment of the present invention.

  Hereinafter, an embodiment of a bottle according to the present invention will be described based on the drawings. In addition, in each drawing used for the following description, in order to make each member into a recognizable size, the scale is appropriately changed.

The bottle 1 according to the present embodiment is, for example, a so-called reduced-pressure bottle which is filled with high-temperature contents and then sealed with a cap (not shown), for example, polyethylene terephthalate, polyethylene naphthalate, amorphous polyester, and blends thereof It is formed of an appropriate synthetic resin material such as a material. Further, as shown in FIG. 1, the bottle 1 has a bottomed cylindrical shape, and has a cylindrical opening 11, a cylindrical shoulder 12, a cylindrical body 13 and a bottomed cylindrical bottom 14. Equipped with The bottle 1 is integrally formed of a synthetic resin material.
Here, the mouth 11, the shoulder 12, the body 13, and the bottom 14 are disposed such that their central axes are located on a common axis. Hereinafter, this common axis is referred to as a bottle axis O, and in FIG. 1, the direction from the bottom 14 to the mouth 11 along the bottle axis O is referred to as the upper side, and the opposite direction is the lower side. Further, the direction orthogonal to the bottle axis O in a plan view seen from the bottle axis O is taken as the radial direction, and the direction circling around the bottle axis O is taken as the circumferential direction.

The cap is screwed to the mouth 11.
The shoulder 12 is connected to the lower end of the mouth 11 and has a frusto-conical shape in which the inner diameter and the outer diameter gradually increase in the downward direction.
The upper and lower two linear circumferential grooves 21 and 22 continuously extending over the entire circumference of the body portion 13 and the side view viewed from the radial direction, periodically in the circumferential direction while being bent in the vertical direction Two upper and lower wave-shaped circumferential grooves 23 and 24 having an extending wave shape, auxiliary ribs 25 and 26 extending separately from the wave-shaped circumferential grooves 23 and 24, and straight lines between the straight circumferential grooves 21 and the wavy circumferential grooves 23 and straight lines Reinforcing ribs 27 and 28 are respectively formed between the circumferential groove 22 and the wavy circumferential groove 24.

The linear circumferential grooves 21 and 22 are formed at intervals in the vertical direction.
The waveform circumferential grooves 23 and 24 are formed at intervals in the vertical direction between the linear circumferential grooves 21 and 22, and the phases thereof coincide with each other. The upper corrugated circumferential groove 23 has a protruding ridge 31 that protrudes in a direction (downward) away from the upper linear circumferential groove 21 in a side view when the trunk portion 13 is viewed from the outer side in the radial direction; And an approach peak 32 projecting in a direction (upward) approaching the point 21. Similarly, the lower corrugated circumferential groove 24 has a separation peak 33 projecting in a direction (upward) away from the lower linear circumferential groove 22 in a side view when the trunk portion 13 is viewed from the outer side in the radial direction. And an approach peak portion 34 which protrudes in a direction (downward) approaching the linear circumferential groove 22.
Further, the depths of the corrugated circumferential grooves 23 and 24 gradually become shallower as going from the tops of the approach peaks 32 and 34 to the tops of the separation peaks 31 and 33. For example, the depth at the top of each of the separated ridges 31 and 33 is about 1 mm, and the depth at the top of each of the approaching ridges 32 and 34 is about 2 mm.

The auxiliary rib 25 is connected to the top of the separation peak portion 31 so as to be positioned below the circumferential band portion 23A of the trunk portion 13 in which the corrugated circumferential groove 23 is positioned. The circumferential belt portion 23A is a portion of the trunk portion 13 which is sandwiched between a line connecting the tops of the separation peak portions 31 of the waveform peripheral groove 23 and a line connecting the tops of the separation peak portions 31 of the waveform peripheral groove 23. It has become. The lower end portion of the auxiliary rib 25 is located below the top of the separation peak portion 33 of the wavy circumferential groove 24 and is spaced apart from the wavy circumferential groove 24.
Similarly, the auxiliary rib 26 is connected to the top of the separation peak portion 33 so as to be positioned above the circumferential band portion 24A of the trunk portion 13 in which the corrugated circumferential groove 24 is located. The circumferential band portion 24A is a portion of the trunk portion 13 which is sandwiched between a line connecting the tops of the separation peak portions 33 of the waveform peripheral groove 24 and a line connecting the tops of the separation peak portions 33 of the waveform peripheral groove 24. It has become. The upper end portion of the auxiliary rib 26 is located above the top of the separation peak portion 31 of the wavy circumferential groove 23 and is spaced apart from the wavy circumferential groove 23.
Further, the depths of the auxiliary ribs 25 and 26 are shallower than the corrugated circumferential grooves 23 and 24, and the widths of the auxiliary ribs 25 and 26 are narrower than the corrugated circumferential grooves 23 and 24. The depth of the auxiliary rib 25 becomes shallower as it goes downward from the separation peak 31, and the depth of the auxiliary rib 26 becomes shallower as it goes upward from the separation peak 33.

Reinforcing ribs 27 and 28 are positioned separately between the linear circumferential groove 21 and the separation peak portion 31 and between the linear circumferential groove 22 and the separation peak portion 33, and extend in the circumferential direction. Groove in the
A part of the reinforcing rib 27 is disposed at the same position as the top of the approach peak 32 in the vertical direction. The upper end of the reinforcing rib 27 is located above the top of the approach peak 32. Further, the lower end portion of the reinforcing rib 27 is located above the top of the separation peak portion 31 and slightly bulges downward. Furthermore, both circumferential ends of the reinforcing rib 27 are circumferentially separated from the tops of two adjacent peak portions 32 adjacent in the circumferential direction.
Similarly, a part of the reinforcing rib 28 is disposed at the same position as the top of the approach peak 34 in the vertical direction. The lower end of the reinforcing rib 28 is located below the top of the approach peak 34. Further, the upper end portion of the reinforcing rib 28 is located above the top portion of the separation peak portion 33 and slightly bulges upward. Furthermore, both circumferential end portions of the reinforcing rib 28 are circumferentially separated from the tops of two adjacent peak portions 34 adjacent in the circumferential direction.
Further, the depths of the reinforcing ribs 27 and 28 are shallower than the corrugated circumferential grooves 23 and 24, and the widths of the reinforcing ribs 27 and 28 are narrower than the corrugated circumferential grooves 23 and 24.
Although the reinforcing ribs 27 and 28 are formed so as to sink radially inward, they may be formed so as to project radially outward.
The lower portion of the trunk portion 13 with respect to the linear circumferential groove 22 has a frusto-conical shape in which the inner diameter and the outer diameter gradually increase in the downward direction.

  The bottom portion 14 has a cylindrical peripheral wall portion 41 whose upper end opening is connected to the lower end opening portion of the trunk portion 13 and a bottom wall portion 42 circular in plan view continuously provided at the lower end of the peripheral wall portion 41 Have. Moreover, between the bottom part 14 and the trunk | drum 13, the circumferential groove 43 extended continuously over the perimeter is formed.

  According to the bottle 1 having the above-described configuration, the auxiliary ribs 25 and 26 are separately formed on the tops of the corrugated circumferential grooves 23 and 24, respectively, so that even if the barrel 13 is deformed near the top, the deformation It becomes easier to restore and deform. Here, the depth of the corrugated circumferential grooves 23 and 24 gradually becomes shallow as it goes to the top of the separated peak portions 31 and 33, and the auxiliary ribs 25 and 26 of one corrugated circumferential groove 23 and 24 have the other corrugated shape Since the circumferential grooves 24 and 23 are not connected to the approaching ridges 34 and 32, it is possible to more reliably suppress the occurrence of deformation that can not be restored and deformed in the entire body 13.

Next, the verification test of the effect demonstrated above is demonstrated.
As Examples 1-3, the bottle in which the auxiliary ribs 25 and 26 were provided was adopted (however, the reinforcing ribs 27 and 28 are not provided). On the other hand, the bottle in which the auxiliary | assistant ribs 25 and 26 were not provided was employ | adopted as Comparative Examples 1-3 (Similarly, the reinforcing ribs 27 and 28 are not provided).
After filling the contents at 87 ° C. at room temperature, attaching the cap to the bottles according to the examples and comparative examples, and then rolling over for 30 seconds, and then standing still for 5 minutes and 30 seconds, water cooling The presence or absence of deformation of the bottle was evaluated.
Here, the “in-bottle pressure reduction degree” indicates the negative pressure applied to the barrel of the bottle when the contents are filled and cooled to 26 ° C. Further, the “waveform circumferential groove restoration limit point” indicates a limit point at which deformation when pressing the barrel of the bottle does not restore after releasing the pressure. That is, if the pressure reduction degree in the bottle is less than the waveform circumferential groove restoration limit point, for example, the body portion is restored and deformed without reworking such as pressing the other undeformed portion of the body portion with a hand or the like. It means to return to the shape. Furthermore, the “final deformation limit point” indicates a limit point which can not be restored and deformed by reworking after the deformation when pressing the barrel of the bottle is released.

  As shown in Table 1, in the bottle according to the example, by providing the auxiliary rib, the final deformation limit point can be improved, and restoration is not possible in the waveform circumferential groove depending on the negative pressure generated at the time of pressure reduction in the bottle. There was no possible deformation.

The present invention is not limited to the above embodiment, and various modifications can be made without departing from the scope of the present invention.
For example, the bottle is not limited to a single phase structure but may be a laminated structure having an intermediate layer. Examples of the intermediate layer include a layer made of a resin material having gas barrier properties, a layer made of a recycled material, and a layer made of a resin material having oxygen absorbability.
The shoulder portion, the body portion and the bottom portion have a circular cross-sectional shape perpendicular to the bottle axis, but the shape is not limited to the circular shape, and may be another shape such as an elliptical shape or a polygonal shape.
The body may not be provided with a reinforcing rib.
Although two straight circumferential grooves and two wavy circumferential grooves are formed in the body, at least one wavy circumferential groove may be formed, and no linear circumferential grooves are formed. May be
The shape of the waved circumferential groove is a shape in which the separation peak portion and the approach peak portion are alternately and periodically extended, but it need not be periodic, and may be another shape such as a sawtooth shape It is also good.
The waveform circumferential grooves may not be formed to be in phase with each other.
The auxiliary rib is formed only on the top of the separation peak, but may be formed on the top of the approach peak.
The auxiliary ribs are connected to the corrugated circumferential groove, but they need not be connected at least if they are close. Moreover, although the auxiliary rib is not connected with the other waved circumferential groove adjacent in the vertical direction, it may be connected.
The auxiliary rib is formed in a linear shape extending in the vertical direction, but may have another shape. Similarly, the reinforcing rib is formed in a circumferentially extending straight shape, but may have other shapes. The depths of the reinforcing rib and the auxiliary rib may be changed as appropriate.

  According to the present invention, industrial applicability is recognized with respect to a bottle capable of suppressing the occurrence of deformation that can not be restored and deformed in the body at the time of pressure reduction in the bottle.

Reference Signs List 1 bottle, 13 body, 23, 24 corrugated circumferential groove, 23A, 24A circumferential portion, 25, 26 auxiliary rib, O bottle shaft

Claims (3)

A bottomed cylindrical bottle made of a synthetic resin material,
The body portion has a corrugated circumferential groove having a wave shape extending along a circumferential direction around the bottle axis while being bent in the bottle axial direction in a side view when the bottle is viewed from the outside in the radial direction orthogonal to the bottle axis An auxiliary rib is formed that is connected to the top of the corrugated circumferential groove and is located on the outer side in the bottle axial direction with respect to the circumferential band portion of the body portion in which the corrugated circumferential groove is located;
A plurality of the waved circumferential grooves are formed adjacently in the bottle axial direction,
The auxiliary rib is connected to the top adjacent to another corrugating groove adjacent to the bottle axial direction in one corrugating circumferential groove, and is separated from the other corrugating groove. Bottle to be The depth of the waveform peripheral grooves, in the circumferential direction of circling the bottle axis, according to claim 1, wherein the auxiliary ribs of the waveform peripheral grooves characterized by comprising gradually shallower toward the top you consolidated Bottle of water.   The bottle according to claim 1 or 2, wherein the plurality of waved circumferential grooves are formed in phase alignment.

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