JP3317584B2 - Glass bottle - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a glass bottle for collecting and reusing beer, soft drink and the like.

More specifically, in a bottle to be recovered and reused, a whitening phenomenon due to a hit or a scratch on the bottle surface caused by collision, rotation or rubbing of the bottles in a bottling process is to be applied to a bottle shoulder portion and a bottle bottom portion. It is a shape that concentrates locally on the shoulder, maintaining the strength of the shoulder and the strength of the circumferential protrusion at the bottom.
For glass bottles to improve.

[0003]

2. Description of the Related Art Some bottles used for beer and soft drinks are designed so that empty bottles that have been once distributed can be collected and reused.

[0004] The problem is that, as the collection and reuse are repeated, collisions and rubbing of the bottles in the bottling process accumulate, and the contact portions between the bottles, that is, from the bottle shoulder to the trunk and the bottom of the bottle. This leads to promotion of the occurrence of whitening phenomenon (hereinafter referred to as scuff) due to hit and scratches. Large scuffs not only impair the appearance, but also reduce the strength of the bottle itself.

[0005] Conventionally, as a countermeasure against the generated scuff, one of them is to selectively remove a bottle having a scuff over a certain limit and impairing the appearance, and further, to make the scuff inconspicuous in a bottling process. In some cases, a resin coating is applied to the entire circumference of the site of occurrence.

[0006] Even in a collection bottle of beer, soft drink or the like in which measures for reducing the scuff in appearance are taken, the scuff becomes conspicuous as a result of repeated collection and reuse several tens of times. Bottles will be sold in the market, and in the case of carbon dioxide containing beverages, if the weakened bottles are mixed with normal products, there is a risk of explosion rupture bottles in the distribution process, so fill the contents Previously, a forced bottle strength check such as checking the internal pressure resistance of the bottle that maintains a constant water pressure or checking the bottle neck breaking due to mechanical impact is performed.

In any case, these complicate the bottling process and cause enormous costs. It is considered that the scuff in the use of the recovered bottle is one of the causes of the deterioration of the bottle strength. Control the deterioration of the bottle strength, and also reduce the degree of scuffing and removal of scuff bottles that impair the appearance, thereby extending the service life of the bottles, furthermore, the cost of sorting and the use of certain collection bottles. There are various proposals for bottles that can reduce the cost of resin coating.

In order to prevent the occurrence of scuffs, for example, a convex portion is provided at equal intervals on the shoulder and the bottom of the bottle so as not to damage the entire outer periphery of the bottle. A bottle for drinking water having a convex portion formed on the outer periphery of the bottle and integrally formed with the bottle (Japanese Utility Model Laid-Open No. 57-188613), and a barrel (straight barrel) vertical to about 1/3 or less of the bottle height of a glass bottle. ), The diameter of the bottle body is gradually reduced from the upper end of the straight body to the upper shoulder, and the difference between the bottle diameter at the upper end of the straight body and the shoulder bottle diameter of 1 / 2.3 of the bottle height is obtained. 0.5 to 2.5 mm, the gap between shoulders between adjacent bottles is made larger than conventional bottles, and the chance of contact between bottles and collision is reduced.
"Glass bottle" (Japanese Utility Model Application Laid-Open No. 56-138015) for suppressing the occurrence of scuff is exemplified.

[0009]

By the way, even in a conventional bottle having a straight body, the straight body is slightly inclined above the straight body in order to reduce the contact between the shoulders. Even in bottles that are connected to the shoulders to increase the gap between the shoulders, there is a scuffing factor due to contact in the straight body part, so the present inventors consider the shape of the bottle body , Based on the factor analysis of scuff occurrence by observing the bottling process, and to prevent the attached label
In consideration of the fact that technologies such as making the entire label affixing surface concave, providing protrusions on the top and bottom, and forming a concave shape on the circumference of a round bottle are widely known, scuffs should be applied locally. By suppressing the occurrence of scuffing in the body by generating it, it has the same strength as conventional bottles, used in combination with conventional bottles,
A reusable glass bottle was proposed.

That is, a circumferential projection formed from a plurality of radii of curvature is provided at the bottom, the shape of the body is a bottle body diameter that gradually decreases upward, and the periphery of the shoulder and the bottom of the bottle is formed. 2 with convex
A glass bottle in which a body is provided with a gap which is in contact with a plane at a point and becomes smaller as it goes toward the shoulder, and has a radius of curvature of 10 to 100 mm forming a maximum body diameter of the shoulder and the bottom. A glass bottle (actually 6-2) characterized in that the step formed by the portion is formed in a range of 0.2 to 1 mm, and the interval between the bottle axes at the protrusion of the shoulder and the bottom is formed in the range of 0.7 to 3 mm.
No. 889), a circumferential projection formed from a plurality of radii of curvature is provided on the shoulder and the bottom, and the shape of the body is a bottle body diameter that gradually decreases upwards. A glass bottle in contact with a flat surface at two points with a peripheral protrusion at the bottom and a gap in the body, the curvature radius forming the maximum body diameter of the shoulder is 10 to 100 mm, and the circumferential protrusion A glass bottle (Japanese Utility Model Publication No. 6-2890) characterized in that a step formed between the body and the body is formed in a range of 0.15 to 1 mm.

[0011] These are variances in bottle specifications which are inevitable in the current bottle making process resulting from bottle blowing and slow cooling, and which do not pose any problem in terms of quality, for example, bulging of the straight body portion is 0%. .2 mm, a small distortion of circularity of about 0.5 mm due to the eccentricity of the shoulder, absorbs dents and bulges in the direction of the longitudinal axis of the body. In this case, the bottles are placed in a state where the bottles flow from each other, and the bottles are in a state of being overlaid, thereby reducing contact with the body when the bottles are conveyed while rotating in relation to the conveyor speed.

[0012] However, they absorb variations in the bottle making technology within the standard and suppress the occurrence of scuffs in the body without changing the appearance of the conventional bottle and changing the taste line. Although the bottles of the old and new shapes were mixed, the injured condition was observed with a line simulator that reproduced the used state of collection multiple times by mixing, and it was found that some of the large bottles, medium bottles, and small bottles commonly called shoulder contacts Points were shifted and scuffs became two lines and the scuff width became large.

On the other hand, the present inventors have grasped the strength data obtained during the study on the invention of the glass bottle proposed above, that is, although the appearance of the bottle is not much different from the appearance of the mixture of the old and new shaped bottles, the mechanical impact strength etc. Since the bottle shape of the inclined body without the circumferential projection on the shoulder tends to be slightly lower than the bottle with the circumferential projection on the shoulder, the occurrence of collision stress in the shape From the viewpoint of label sticking, there is a potential problem such as the inclined trunk shape and the circumferential protrusion provided on the shoulder restricting the sticking position depending on the shape and size of the label. That means that the constraint gets larger as the bottle gets smaller. Therefore, providing a circumferential projection on the shoulder has an advantage in terms of bottle strength, but it is also a measure against scuffing,
The present invention was completed by studying the shape of the shoulder portion of a bottle that does not have a circumferential projection on the shoulder portion as a bottle that can reduce the restrictions on labeling while maintaining the bottle strength of the conventional bottle.

[0014]

SUMMARY OF THE INVENTION A circumferential projection formed from a plurality of radii of curvature is provided at the bottom to form a step between the lower end of the body and the bottom circumferential projection, and the shoulder and the bottom of the bottle are formed. 2 with circumferential protrusion
A glass bottle provided with a gap in the body in contact with a plane at a point and becoming smaller as it approaches the shoulder, and a straight portion is provided at the maximum body diameter of the circumferential protrusion at the bottom formed with a plurality of radii of curvature. ,
And a radius of curvature having a center on the inner side of the bottle that is continuous from the upper end of the body, a radius of curvature having a center on the outer side of the bottle, and a radius of curvature having a center on the inner side of the bottle. By suppressing the occurrence of scuffs, the impact of the circumferential projection on the bottom of the bottle to which the impact is applied is reduced, and the occurrence of defects that are disadvantageous is suppressed. It is to provide a glass bottle maintaining strength.

Here, the lower end of the body portion is the lower end of the body portion formed linearly and rising upward continuously to the bottom circumferential projection formed with a plurality of radii of curvature with the straight portion having the maximum body diameter. The lower end of the shoulder means the lower end of the shoulder formed from the trunk with a plurality of radii of curvature, and is in contact with the upper end of the trunk. The upper portion of the shoulder is curvedly connected to the bottle mouth, also called the neck, to form the entire bottle.

The linear portion of the circumferential projection is a minute linear portion located between a plurality of radii of curvature forming the circumferential projection and serving as a maximum body diameter portion.

[0017]

The present invention does not significantly change the appearance of conventional bottles, does not change the appearance of the bottles, does not change the appearance of bottles of the old and new standards, and is strong even when collected and used. The purpose of the present invention is to provide a glass bottle which has no problem in terms of scuffing and which can significantly reduce the occurrence of scuffing as compared with the prior art. Around the plurality of radii of curvature, a circumferential projection having a plurality of radii of curvature is provided at the bottom with a minute linear portion that is a maximum body diameter portion, and a step between the lower end of the body portion and the bottom circumferential protrusion is provided. A glass bottle having a body formed with a gap formed in the body at two points, that is, a shoulder of the bottle and a bottom peripheral protrusion, and provided with a gap which becomes smaller toward the shoulder. At the lower end of the bottle centered on the inner surface side Curvature having radius lies in the formation of the circumferential recess in the shoulder lower end with.

Most bottle breaks are caused by impacts, and often not directly, but indirectly. Breakage is caused by local deformation of the glass at the point of impact, bending behind the point of impact and bending slightly away from the point of impact.
Although most of the actual failures are said to belong to the last case, they are particularly called hinge failures because they hit the fulcrum of bending.

The impact strength is determined by the shape, thickness, location of impact,
Impact method, that is, the shape, speed, position, impact area, material, etc. of the object to be impacted, and when a bottle or other hard object is impacted, the bottle is subjected to the stress (tension) due to the deformation at the point of impact. The surface is scratched. In particular, if the impact is weak, it will only rebound, but if it is strong, it will leave small arc-shaped scratches. In addition, tensile stress is always concentrated at the tip of the flaw, and it breaks at the starting point.

Although there is no problem in the strength during the operation of the compressive stress, the bottle will be broken if the tensile stress is generated. When an impact is applied to the bottle, the contact portion is locally dented, and a tensile stress corresponding to the impact deformation is generated. If the deformation due to the impact force or the impact when the bottles collide with each other can be mitigated, the possibility of the occurrence of scratches and breakage of the bottles is reduced. Speaking of the bottom part, the impact point is made a straight surface (quadric surface) to disperse the impact force of the collision, or by providing a curvature adjacent to the straight part, deformation that leads to hinge breakage It is possible to reduce the tensile stress in the vicinity of the area where the impact is applied by combining the curvature of the unevenness and forming a small curvature in the three-dimensional area. It is thought to act on.

As for the scuff, since the shape of the scuff is in contact with the plane at two points, that is, the shoulder portion and the bottom peripheral protrusion, the bottle shoulder portion has
The scuffing is concentrated on the bottom of the bottle, so that the occurrence of scuffing as a whole can be suppressed.

[0022]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, a glass bottle of the present invention will be described with reference to the drawings.

FIG. 1 shows a glass bottle according to a first embodiment of the present invention. This glass bottle 1 is a so-called small bottle of beer and has a bottle height H.
1 is 241 mm, and the maximum outer diameter D1 is 61.2 mm.
And is formed in a minute linear portion, and has a size of 334 ml when the taste line L is at a position H2 60 mm from the top of the bottle.

The maximum outer diameter portion (hereinafter referred to as a skirt portion) is formed by continuously forming a two-step radius in which a radius of curvature R1 is 5 mm from the bottle bottom (hereinafter, mm is simply referred to as R) and R2 is 45R. A straight portion which becomes a hem at a position where the rising height H3 is 14 mm extends parallel to the bottle center axis until the bottle bottom rising height H4 becomes 16 mm, and then R3 is a circular arc surface of 20R to form a circumferential projection 2. Further, R4 is connected to the lower end of the body by a reverse radius (convex inward) of 200R. The lower end of the body has a bottle bottom ascending height H5 of 28.5 mm, a diameter D2 of 60.5 mm, and a step G1 of 0.35 mm from the bottom.

The shape of the body is 28.
From 5mm (bottom end of the body) to 122mm of the bottle bottom height H6
It also extends upward in a straight body shape, and the diameter D3 at the position of H6 (referred to as the lower end of the shoulder) is also 60.5 mm.

From the lower end of the shoulder toward the bottle neck, R
5 is 10R, R6 is 20R (reverse radius), R7 is 48
As a shape where R and R8 are connected by 27R (reverse radius),
The R6 portion formed by the inverted radius forms the circumferential concave portion 5. The diameter D of the connection between R6 and R7 above it
4 is 60.1 mm and its position is 125.46
mm.

The neck which continues to the shoulder is connected to the shoulder at R8 by a 200R and then a 200R reverse radius, and continues to a bottle mouth called a lip mouth. Therefore, the main part of the shape of the present embodiment according to the present invention has a circumferential recess 5 formed in the shoulder, a skirt portion having a diameter of 61.2 mm and a straight portion 3 serving as a circumferential projection, and a skirt portion having a diameter of 60.5 mm. It consists of a torso 4 having a step G1 of 0.35 mm from the lower end of the torso, and a gap gradually decreasing upward with respect to an imaginary line connecting the hem and the lower end of the shoulder (= the upper end of the torso). The distance G2 between the lower end of the shoulder (= the upper end of the body) and the skirt axis is 0.35 mm, which is the same as that of G1.

The glass bottle 1 of the present invention formed in this way is almost identical in appearance to the conventional beer bottle 6 of so-called zipped barrel type as shown in FIG. There is no significant difference in the shape. The drawings are exaggerated for clarity of each feature.

As a result of the tests for the occurrence rate of scuff, the internal pressure resistance, the falling impact, the running impact, the mechanical impact, and the like, the following table 1 shows that the glass bottle 1 of the present invention and the conventional glass bottle 6 have different values. As shown, there was a marked difference in the scuff suppression effect.

[0030]

[Table 1]

The scuff area ratio in the above Table 1 indicates the scuff occurrence rate by obtaining the scuff area ratio.
The scuff of the measurement target part is measured optically, integrated and the area is taken, and the ratio with the area of the whole target part is taken, and the numerical value at 50 trip equivalents by the scuff simulation with the experimental conveyor simulator is shown, and The values of the internal pressure resistance, the fall impact strength, and the like are shown at 50 trips. Here, the single injury in the strength test is
Only the bottle of the present invention was used, and the mixed damage refers to a test result obtained by mixing equal amounts of the bottle of the present invention and the conventional bottle. The measured value of the conventional bottle as a control is the same value under the same conditions.

Here, the experimental conveyors are three rows of conveyors 1 at each end as schematically shown in FIG.
Circular traveling conveyor 13 which is configured to transfer via one or four rows of conveyors 12, and plural rows of conveyors 11, 12
This means that a guide guide 14 for changing the collection width of bottles is provided on the top, and a bottle retaining portion 15 is formed.

The bottles enter the bottle retaining portion 15 in a single row, and gather, rub, rub against each other in a staggered manner with the change of the guide width, and finally form a single row. It is sent to the traveling conveyor 13 set at 45.6 m / min and circulates on the conveyor line.

In the case of a plurality of rows of conveyors 11 on the inlet side of the bottle, the speed is gradually reduced, and the conveyor 1 on the outlet side is reduced.
In the case of 2, by gradually increasing the speed,
In the bottle holding section 15, rotation and rubbing of the bottles occur.

After circulating on the conveyor line 50 times in this manner, the glass bottle is taken out, immersed in an alkaline solution having a concentration of 3.5 to 4% at 80 ° C. for 1 hour, and then withdrawn, washed, collected and reused. The reproduction of the state of use corresponds to 2.5 trips in the actual process. After repeating this 20 times, the results of examining the scuff area ratio, the internal pressure strength, the overturning strength, and the like are also shown in Table 1 above. In the strength test, the average of 40 samples is shown.
The minimum value is also shown.

The internal pressure resistant state is based on JIS S-230.
2 is the one-minute sustained pressure resistance measured by the internal pressure resistance test method, and the mechanical impact strength is measured based on the mechanical impact test method of JIS S-2303. The impact and the skirt are measured values obtained by applying a pendulum impact to the position of the circumferential projection.

Further, as shown in FIG. 4, the falling impact strength is obtained by tilting the glass bottle 16 and setting the vertical height at the center of the bottle mouth of the inclined bottle on the iron plate 17 having a constant thickness in increments of 2.5 cm. It is a value obtained by measuring the height when the glass bottle 16 is broken down and the glass bottle 16 is broken. In the case of a small bottle, the bottle height is 241 mm.
Therefore, when the measuring height is 24 cm, the bottle is overturned in an upright state.

The traveling impact strength was determined by arranging ten bottles and
The bottles placed in front of the impact plate at an interval of m are made to collide at an appropriate conveyor speed, then the top bottle is moved to the end, and made to collide in the same manner. Each time, the presence or absence of a broken bottle is checked, and the speed is indicated by the first conveyor speed at which the broken bottle occurred. Conveyor speed was started from 30 m / min, and the speed was sequentially increased every 5 m / min, and measured up to 50 m / min. If a broken bottle occurred, another bottle was refilled for convenience and the test continued.
The measured value was defined as the traveling impact strength at the minimum speed among the four sets.

As is clear from the above experimental results, the scuff area ratio of the glass bottle of the present invention was 9.8% in the case of single injury, 5.1% in the shoulder, and 0.4% in the trunk. %, 4.3% at the hem, which is lower than the conventional glass bottle scuff area ratio (22.0% overall, 5.2% shoulder, 12.8% torso, 4.0% hem). Although there is no remarkable difference in the portion and the hem, the ratio is approximately 1/2 in the whole and approximately 1/30 in the trunk, especially the scuff area ratio is remarkably reduced in the trunk, and the glass bottle according to the present invention and the conventional bottle Even in the case of mixed injuries mixed in equal amounts, 13.8% in total, 8.1% in shoulders, 1.2% in torso
%, 4.5% at the skirt, and the scuff area ratio of the conventional glass bottle (total 18.2%, shoulder 5.5%, trunk 8.5)
%, 4.2% of the skirt), the scuff area ratio of the trunk is significantly reduced (approximately 1/7). Here, for the convenience of the measurement, the skirt is a region where the height of the bottle bottom rises from 0 to 25 mm,
The torso indicates a region where the height of the bottle bottom rises from 25 to 110 mm, and the shoulder indicates a region where the height of the bottle bottom rises from 110 to 130 mm.

It was also found that the glass bottle of the present invention was not inferior to the conventional ones in various strengths such as internal pressure strength and falling impact strength.

Further, in addition to the dimensions of each part shown in Table 2, other examples of small bottles in which the radius above the shoulder was increased to reduce the body diameter were shown.

[0042]

[Table 2]

It is to be noted that the collision between the bottle shoulders in the bottling process or the occurrence of a broken bottle due to a collision between the bottle bottom and the bottle shoulder during handling (in / out of the case) in the distribution process is reduced. Therefore, in the case of beer bottles, it is common for beer bottles to have a pear-skin pattern around the shoulder and absorb the impact of the collision as a point to reduce the degree of hits and to maintain the strength of the bottle. , Does not prevent use in the present invention.

It is needless to say that the shape of the present invention can be applied to so-called large and medium beer bottles.

[0045]

As apparent from the above description, the present invention has the following effects.

(1) A circumferential protrusion is provided at the bottom to provide a step between the body and the body, and the flat contact is made at two points, the circumferential protrusion and the shoulder,
Since the shape of the imaginary line connecting the circumferential projection and the lower end of the shoulder (= the upper end of the body) has a gradually decreasing upward gap between the circumference and the body, Due to the synergistic effect with the body gap, the scuff area ratio can be greatly reduced as compared with the conventional bottle.

(2) From the lower end of the shoulder toward the bottle neck, the R6 portion formed by the inverted radius forms a circumferential concave portion, so that the impact deformation due to the collision is caused by the inverted radius and the upper and lower radius shapes. Maintains strength against shoulder impact
It is possible to reduce the possibility of scratching in combination with the localization of scuffing, without impairing the physical strength such as the internal pressure resistance and mechanical impact strength of the bottle, and as described above, the occurrence of scuffing. Can be kept low, so that the life expectancy (the number of uses) of the bottle can be prolonged.

(3) Further, since the circumferential projection at the bottom of the bottle is provided with a straight portion forming the maximum body diameter, the impact force at the time of collision between the bottoms of the bottles is dispersed and reduced, and the strength at impact is provided. Is maintained and improved.

(4) A scuff having a gap gradually decreasing upward from the imaginary line connecting the circumferential projection at the bottom and the lower end of the shoulder (= the upper end of the torso) to the torso. Despite the fact that the occurrence of odors is suppressed, the appearance can be mixed with the existing bottles, not much different from the existing bottles.

(5) The occurrence of scuffs, especially in the trunk, can be significantly reduced, and the scuffs can be concentrated on the shoulders and skirts, so that the amount of resin coating agent used to fill the scuffs can be reduced. it can.

(6) Since it has a straight body shape, it is possible to increase the degree of freedom in label shape, size, and position of labeling in various forms of labeling, and there is also an effect that restrictions on labeling are reduced.

[Brief description of the drawings]

FIG. 1 is a side view of a first embodiment (small bottle) of a glass bottle of the present invention.

FIG. 2 is a side view of a conventional bottle.

FIG. 3 is a schematic plan view of an experimental conveyor.

FIG. 4 is a side view showing a method of testing a fall impact strength.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Glass 2 ... Circular protrusion 3 ... Linear part of a circumferential protrusion 4 ... Trunk 5 ... Circular recess

──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Kenji Nishikawa 1-3-2 Moto-Akasaka, Minato-ku, Tokyo Suntory Co., Ltd. Tokyo branch office (72) Inventor Katsuoki Kasai 1-1 Namiki Motomachi, Kawaguchi City, Saitama Prefecture 1-1 Sapporo Brewery Co., Ltd., Plant Division (56) References Japanese Utility Model Sho 64-55213 (JP, U) Japanese Utility Model Sho 64-55212 (JP, U) Japanese Utility Model Sho 54-7963 (JP, U) Field (Int.Cl. ⁷ , DB name) B65D 1/02 B65D 1/40 B65D 1/42

Claims (1)

(57) [Claims] 1. A bottle-shaped shoulder and a bottom peripheral protrusion, wherein a step is formed between a lower end of a body and a bottom peripheral protrusion by providing a peripheral protrusion formed from a plurality of radii of curvature at a bottom. A glass bottle provided with a gap in the body at two points of contact with the plane and decreasing toward the shoulder, wherein a straight line is formed on the maximum body diameter of the bottom circumferential protrusion formed by a plurality of radii of curvature. At the lower end of the shoulder with a radius of curvature having a center on the inner surface side of the bottle, and a radius of curvature having a center on the outer surface side of the bottle, and a radius of curvature having a center on the inner surface side of the bottle. A glass bottle having a circumferential recess formed therein.