JPH11255227A - Synthetic resin reinforced panel and synthetic resin bottle using this synthetic resin reinforced panel - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To increase the strength of a reinforcing panel and prevent crushing deformation of a reinforcing panel such as a reinforcing rib or a reinforcing recess. The upper part of a body part is formed with four lateral ribs, and a first reinforcing panel formed of an elliptical recess and connected to each lateral rib. Have been. Since the depth of the first reinforcing panel 21 is shallower than the depth of the grooves of the two horizontal ribs 13 and 16 at the upper and lower ends, and is deeper than the depth of the grooves of the two horizontal ribs 14 and 15 therebetween. The horizontal ribs 13 and 16 are formed continuously, and the other horizontal ribs 14 and 15 have disappeared. The transverse ribs 13, 14, 15, 16 and the recesses in the reinforcing panel 21 disperse the force applied to them and prevent the reinforcing panel from collapsing.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention belongs to the technical field of synthetic resin reinforced panels formed by blow molding and synthetic resin bottles using the synthetic resin reinforced panels.
In particular, a synthetic resin reinforced panel with increased strength and flexibility, and withstands pressure reduction, bulging pressure, and resistance to a wide range of applications, such as liquid filling of hot fill and cold fill. It belongs to the technical field of synthetic resin bottles having a holding pressure or the like.

[0002]

2. Description of the Related Art In recent years, synthetic resin bottles formed by biaxial stretch blow molding using a saturated polyester resin represented by polyethylene terephthalate have been used for various drinking waters such as juice and mineral water, seasonings, alcoholic beverages and the like. , And other food storage bottles.

By the way, such synthetic resin bottles are:
The body of the synthetic resin bottle is pressurized by the weight of the contents to be filled, or an external force is applied when the synthetic resin bottle filled with the contents is transported, etc., causing elastic deformation. May be done. In the case of a hot fill that fills a high-temperature liquid, filling the high-temperature liquid into a synthetic resin bottle and keeping it plugged keeps the filler in the synthetic resin bottle cool, and In cold fill, where the internal pressure of the bottle decreases and the body pressure of the synthetic resin bottle is pressed by the atmospheric pressure, or the low-temperature liquid is filled into the synthetic resin bottle, the low-temperature liquid is filled with the synthetic resin. When the bottle is filled and kept in a stoppered state, the filling in the synthetic resin bottle is warmed, the internal pressure of the synthetic resin bottle increases, and the body of the synthetic resin bottle is pressurized. Similarly, the body of the synthetic resin bottle is elastically deformed by being pressed.

Therefore, conventionally, for example, Japanese Unexamined Patent Publication No.
As disclosed in Japanese Patent No. 43, several lateral ribs for reinforcement consisting of concave grooves extending in the circumferential direction of the synthetic resin bottle are provided on each surface of the bottle body, The reinforcing panel is provided on each surface of the bottle body to increase the strength of the body and suppress the elastic deformation of the body of the synthetic resin bottle as described above.

Further, in order to prevent the elastic deformation of the body portion of such a synthetic resin bottle, for example, a Japanese Utility Model Laid-Open No. 5-9411 has been proposed.
As disclosed in Japanese Patent Laid-Open No. 2 (1993) -1995, a plurality of transverse ribs for reinforcement comprising concave grooves extending over the entire circumferential direction are provided, and a reinforcing panel comprising such circumferential reinforcing ribs and uneven portions is provided. Some are combined.

[0006]

However, in the synthetic resin bottles disclosed in the above-mentioned publications, the strength of the synthetic resin bottle is improved by the reinforcing ribs and the reinforcing panels, but on the other hand, it is soft. Since the reinforcing ribs and the reinforcing panels are not so strong, the reinforcing ribs and the reinforcing panels may be crushed by a certain pressing force or more and deformed so as not to be restored, and may not be restored to the original state. In general, when a synthetic resin bottle is held, a relatively wide flat portion on the long side of the rectangular synthetic resin bottle is held, but holding pressure is applied to the relatively wide flat portion. Therefore, the reinforcing ribs and the like formed on the flat portion may be crushed and may not be restored. Furthermore, since the reinforcing ribs and the reinforcing panel are formed discontinuously at a distance from each other, the boundary between the reinforcing ribs and the reinforcing panel when a pressing force is applied to the side direction of the synthetic resin bottle body. However, the edge force is concentrated on the edge portion of the boundary, so that the edge is easily deformed and may not be restored after this deformation.

When the synthetic resin bottle is crushed and deformed so as not to be restored, not only the strength of the synthetic resin bottle is reduced, but also the appearance of the synthetic resin bottle is impaired. However, the commercial value is significantly reduced.

[0008] The present invention has been made in view of such a problem, and an object thereof is to increase the strength while increasing the strength.
Moreover, it is an object of the present invention to provide a synthetic resin reinforcing panel capable of preventing crush deformation of a reinforcing rib, a reinforcing panel, and the like, and a synthetic resin bottle using the synthetic resin reinforcing panel.

[0009]

In order to solve the above-mentioned problems, a synthetic resin reinforcing panel according to the first aspect of the present invention has a predetermined number of lateral ribs formed of laterally extending grooves. At the same time, in a part of the region where the lateral rib is formed, a concave portion having a predetermined shape continuous with the concave groove of the lateral rib is formed, and the depth of the concave portion is from the edge of the concave portion to the center. As the depth gradually and continuously increases, the depth of the concave portion is set to be shallower in the vicinity of the edge of the concave portion than the depth of the concave groove of the lateral rib, and in the vicinity of the central portion of the concave portion, It is characterized in that it is set deeper than the depth of the concave groove of the lateral rib.

In the reinforcing panel made of synthetic resin according to the second aspect of the present invention, a plurality of the lateral ribs are formed, and some of the plurality of lateral ribs have a depth of the recess. Are formed in a region shallower than the depth of the concave groove of the lateral rib, and the depth of the lateral rib in this region gradually decreases as the depth of the concave portion of the reinforcing panel increases. And wherein, of the plurality of lateral ribs, another lateral rib has a region where the depth of the concave portion is shallower than the depth of the concave groove of the lateral rib and the depth of the concave portion is the concave groove of the lateral rib. The other lateral rib is formed in a region where the depth of the concave portion is smaller than the depth of the concave groove of the lateral rib, and the other lateral rib is formed over the region deeper than the depth of the concave portion. Disappears in a region deeper than the groove depth of the lateral rib. It is characterized by that.

Further, in the synthetic resin reinforcing panel according to the third aspect of the present invention, the concave portion continuous to the concave groove of the lateral rib is formed in a circular shape, an elliptical shape, an elliptical shape, or a rhombic shape. Features.

Further, the synthetic resin bottle according to the present invention has a mouth, a shoulder connected to the mouth, a body connected to the shoulder, and a bottom connected to the body. And a synthetic resin bottle in which each of these parts is integrally formed of a synthetic resin, wherein the synthetic resin reinforcing panel according to any one of claims 1 to 3 is provided on an upper portion of the body portion and the lateral rib. Are used so as to extend in the circumferential direction.

[0013]

In the synthetic resin reinforced panel of the present invention thus constituted, a part of the region where the lateral rib extending in the lateral direction is formed has a predetermined shape continuous with the concave groove of the lateral rib. When a recess is formed and a vertical force is applied to the recess forming portion of the reinforcing panel, the recess prevents the vertical force from being dispersed and concentrated. As a result, the force applied to the concave portion forming portion of the synthetic resin reinforcing panel is reduced, so that even if such a force is applied and the synthetic resin reinforcing panel is deformed, when the force is removed, the reinforcing panel becomes It will be restored to the original. Therefore, crushing deformation that does not restore the reinforcing panel due to such a force is prevented. In particular, the recess allows the transverse ribs to gradually disappear within the recess, thereby distributing the vertical forces more effectively.

Further, since the reinforcing ribs made of synthetic resin are used on the upper part of the body of the bottle made of synthetic resin so that the lateral ribs extend in the circumferential direction, the strength of the bottle made of synthetic resin is increased. In addition, by imparting flexibility to the synthetic resin bottle and dispersing the force applied to the synthetic resin bottle, the external force applied to the synthetic resin bottle, and the pressure reduction or increase in the synthetic resin bottle, The crushing deformation of the synthetic resin bottle that is not restored based on the pressure is more effectively prevented.

Further, since the depth of the concave portion of the synthetic resin reinforcing panel is set so as to gradually and continuously increase from the edge toward the center, the synthetic resin bottle is inserted into the concave portion of the concave portion. The fingers, such as the thumbs, to be held can be fitted accurately. Thereby, the synthetic resin bottle becomes easy to hold, and when the liquid in the synthetic resin bottle is poured out, the liquid can be poured out in a stable state.

[0016]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a front view showing an example of an embodiment of a synthetic resin bottle according to the present invention, FIG. 2 is a left side view of this example, and FIG. 3 is a plan view.

As shown in FIGS. 1 and 2, the synthetic resin bottle 1 of this embodiment has a mouth portion 2, a shoulder portion 3 continuous from the mouth portion 2, and a body portion continuous from the shoulder portion 3. 4 and a bottom portion 6 which is continuous from the body portion 4 via a lateral rib 5, and these portions are integrally formed by blow molding using a plastic such as polyethylene terephthalate. The lateral rib 5 is not always necessary, and the body 4 and the bottom 5 can be formed as one part by omitting the rib. However, the strength against the pressing force such as the pressurization due to the weight of the filling material is not required. In order to secure it, it is desirable to be provided.

The mouth portion 2 is formed in a cylindrical shape similarly to the conventional synthetic resin bottle 1, and has an outer peripheral surface on which an external thread into which a cap (not shown) for closing the open end of the mouth portion 2 is screwed. 7 are formed. The shoulder 3 is formed in an inverted funnel shape as a whole, and includes an upper portion 8 and a lower portion 9. As shown in FIGS. 1 to 3, the upper portion 8 is formed in a truncated pyramid shape of a regular dodecagon, and the lower portion 9 is formed in a rectangular shape in which a quadrangular portion described later is largely chamfered. The upper part 4 has a shape that is bent along a line connecting each corner of the upper part 10 and a regular dodecagonal corner of the upper part 8 of the shoulder part 3.

The body 4 further includes an upper part 10, a lower part 11,
A circumferential rib 12 extending in the circumferential direction is formed between the upper part 10 and the lower part 11 at substantially the center of the body 4. As shown in FIG. 3, the upper part 10 and the lower part 11
The cross-sections of these outer shapes are formed in a rectangular shape in which the four corners are chamfered relatively large, in which case the outer dimensions of the upper part 10 are set slightly smaller than the outer dimensions of the lower part 11. Although not shown, the outer shape of the lateral rib 12 is also formed in a rectangular shape with a relatively large chamfered quadrangular portion, like the upper portion 10 and the lower portion 11. In addition, the four corners of the body 4 do not necessarily have to be chamfered, and may be curved portions (R portions) having a predetermined radius of curvature.

The upper portion 10 has V extending in the circumferential direction from the front and back of the upper portion 10 to the left and right side surfaces.
Four transverse ribs 13, 14, 15,
1 and 2 are formed at predetermined intervals in the vertical direction in FIGS. The number of these lateral ribs is not limited to four in the vertical direction, and one or more predetermined ribs can be formed in the vertical direction.

These transverse ribs 13, 14, shown in FIG.
The width α of the depressions 15 and 16 is such that the thickness of the upper part 10 is 0.3 m.
m, when the entire circumference of the upper part 10 is 373 mm and the vertical length of the upper part 10 is 70 mm, it is preferably about 2 mm to 10 mm, preferably 3 mm to 7 mm, and the horizontal ribs 13, 14, 15, The depth β of the 16 dents is preferably about 0.5 mm to 10 mm from the outer surface of the upper part 10, but is preferably 0.5 mm to 5 mm. These numerical values depend on the characteristics of the material of the bottle, are values obtained from empirical values in tests, and are absolute values not related to the size of the bottle.

These lateral ribs 13, 14, 15, 16
Although each of them extends in the circumferential direction, it is not formed over the entire circumference of the upper portion 10, but is formed at the central portion of the left side surface which is the short side of the rectangular upper portion 10 as shown in FIG. Absent. That is, the lateral ribs 13, 14, 15, 1
6 are provided with crush prevention rib portions 17, 18, 19, and 20 formed of discontinuous portions without ribs at the center of the left side surface of the upper portion 10, respectively. These crush prevention ribs 17, 18, 1
9 and 20, the left and right side surfaces of the upper portion 10 of the synthetic resin bottle 1 have flexibility.

As shown in FIG. 1, a first reinforcing panel 21 formed of an elliptical concave portion having a long axis in the vertical direction is provided in the center of the front surface of the upper part 10 on the long side thereof with lateral ribs 13 and 14. ,
The first reinforcing panel 21 is formed so as to include a part of the formation region of the horizontal rib 1.
3, 14, 15, and 16 are continued. Although not shown, the first reinforcing panel 21 is similarly formed at the center of the back surface facing the front surface of the upper portion 10. The first reinforcing panel 21 may be formed on at least one of the front surface and the back surface. However, forming the first reinforcing panel 21 on both surfaces as in this example makes the synthetic resin bottle 1 more flexible. Desirable for effective use.

As shown in FIGS. 5 and 6 (a), the first reinforcing panel 21 has a longitudinal section and a transverse section both formed in an arc shape or an elliptical arc shape. Therefore, it is gradually and continuously depressed, and is set to the most depressed state at the center. That is, the depth δ of the first reinforcing panel 21 is
1 is the deepest in the center. Then, FIG.
The four lateral ribs 13, 14, 15, 16 as shown in
Among them, at the formation position of the lateral rib 13 at the uppermost position, the depth β of the concave groove of the lateral rib 13 is deeper than the depth δ of the first reinforcing panel 21. Therefore, FIG. As shown, the lateral ribs 13 are
Also in the formation region of No. 1, it is formed continuously. However, in the area of the first reinforcing panel 21, the width α of the lateral rib 13 gradually and continuously narrows from the edge of the first reinforcing panel 21 toward the center. , The width α of the lateral rib 13 is the smallest. In other words, the depth β of the lateral rib 13 itself gradually and continuously decreases from the edge of the first reinforcing panel 21 toward the center (at the position shown in FIG. 5, the depth of the lateral rib 13). Β is the shallowest). Similarly, the horizontal rib 16 at the lowermost position is also formed continuously in the formation region of the first reinforcing panel 21, and its width α is exactly the same as that of the horizontal rib 13.

As shown in FIG. 6C, of the four lateral ribs 13, 14, 15, 16 at the position where the lateral rib 14 is located at the second position from the top, the first reinforcing panel is provided. 21 is the depth β of the groove of the lateral rib 14.
It is getting deeper. Therefore, as shown in FIG. 1, the lateral rib 1 extends from the edge of the first reinforcing panel 21 toward the center.
4 while the depth β of the groove is deeper than the depth δ of the first reinforcing panel 21, the depth of the lateral rib 14 is
The first reinforcement panel 21
Is deeper than the depth β of the concave groove of the lateral rib 14, the lateral rib 14 has completely disappeared. However, in the region where the first reinforcing panel 21 is formed, the reinforcing rib is formed by the first reinforcing panel 21 so as to be continuous with the lateral rib 14. Similarly, in the region where the first reinforcing panel 21 is formed, the horizontal ribs 13 at the third position from the top also have the horizontal ribs 13 whose depth is continuously reduced from the edge of the first reinforcing panel 21 to the center. Although the horizontal ribs 13 have completely disappeared at the portions, the reinforcing ribs are formed continuously with the horizontal ribs 13 by the first reinforcing panel 21.

The maximum vertical length ε of the elliptical first reinforcing panel 21 is 5% to 5% of the vertical length of the upper part 10.
About 90% is good, but preferably 10% to 50%. Further, the maximum length in the circumferential direction of the first reinforcing panel 21 ζ
Is preferably about 5% to 40% of the length of the upper part 10 in the vertical direction, and more preferably 10% to 30%. Since the effect of the elliptical panel changes with the size of the surface on which it is installed, that is, the panel is affected by the size of the bottle, these numerical values are shown as relative values.

By providing the first reinforcing panel 21 which gradually becomes deeper from the peripheral edge toward the center and continues to the lateral ribs 13, 14, 15, 16 as described above, the synthetic resin bottle 1 is held. Or, when a vertical force is applied to the reinforcing panel installation surface of the synthetic resin bottle 1 when the synthetic resin bottle 1 is transported, the vertical force is dispersed by the first reinforcing panel 21. The edge force (concentrated load) that has conventionally occurred at the corner between the outer surface of the upper part 10 and the reinforcing panel is not generated, and as a result, the deformation of the synthetic resin bottle 1 due to the vertical force is prevented. In addition, since the finger such as the thumb holding the synthetic resin bottle 1 fits precisely into the recess of the first reinforcing panel 21, the synthetic resin bottle 1 becomes easy to hold, and the synthetic resin bottle 1 becomes easy to hold. When the filling in the body 1 is poured out, the filling can be poured out in a stable state.

In the example shown in FIG. 1, one first reinforcing panel 21 composed of a relatively large elliptical concave portion is provided, but the length of the first reinforcing panel 21 in the circumferential direction is reduced. A predetermined number of the first reinforcing panels 21 may be provided in the circumferential direction. Also, the first reinforcing panel 21 is
Although the first reinforcing panel 21 is provided so as to cover all of the horizontal ribs 13, 14, 15, and 16 of the stripes, the first reinforcing panel 21 may be configured to have any number of horizontal ribs. Further, the shape of the first reinforcing panel 21 can be formed in various shapes such as a circle and an ellipse in addition to the ellipse.

Above the first reinforcing panel 21, a reinforcing rib 22 extending in the circumferential direction is formed. Although not shown, the reinforcing ribs 22 are also formed on the back surface of the synthetic resin bottle 1, respectively.
The plane portion of the upper portion 10 above the first reinforcing panel 21 is reinforced.

Further, as shown in FIG. 1 and FIG.
The second and third reinforcing panels 23 and 24 are formed on the front and left sides of the lower portion 11 of the vehicle, respectively.
Although not shown, these second and third reinforcing panels 2 are also provided on the back and right sides of the lower portion 11, respectively.
3, 24 are formed. The second reinforcing panel 23 is formed in a rectangular shape that is concave from the outer surface of the lower portion 11 and has rounded corners as a whole. The second reinforcement panel 23 includes an upper-side uneven ridge 25 and a lower-side uneven ridge 26.
And a concave portion 27 extending in the circumferential direction formed between the upper and lower ridge portions 25 and 26.

As shown in FIG. 2, the third reinforcing panel 24 formed on the left and right side surfaces of the synthetic resin bottle 1 has an upper part 28 and a second reinforcing panel 23, as shown in FIG.
In addition to the lower portion 29 and the lateral ribs 30, the length of the second reinforcing panel 23 in the circumferential direction is short, and the number of the ridges is small. Therefore, the description is omitted.

Further, on the front and left sides of the lower part 11,
Reinforcement ribs 31 and 32 extending in the circumferential direction, respectively, are formed. Although not shown, these reinforcing ribs 31 and 32 are also formed on the back and right sides of the synthetic resin bottle 1, respectively.
And the portion between the second reinforcing panels 23, 24 and the lateral ribs 12 is reinforced.

Further, the lateral ribs 12 are provided in FIG. 1 and FIG.
As shown in the figure, the upper slope 10 side wall 12a, the lower slope 11 side slope wall 12b, and both slope sidewalls 12a, 1
A cross section is formed in a concave portion having a trapezoidal shape from the bottom portion 12c between the recess portion 2b. The bottom 12 of the recess of this lateral rib 12
In FIG. 3C, crush prevention ribs 33 and 34 are formed at the center of each of the front and left sides of the synthetic resin bottle 1, each of which is a widened portion whose width is enlarged. The crush prevention ribs 33 and 34 make the synthetic resin bottle 1 flexible with respect to the holding pressure of the synthetic resin bottle 1, and when the synthetic resin bottle 1 is held, the center of the synthetic resin bottle 1 is The portion exerts its flexibility against the holding pressure and is hardly crushed, and the center portion of the body portion 4 which is most easily deformed can be more reliably prevented from being crushed as compared with the conventional synthetic resin bottle. I have.

Actually, using polyethylene terephthalate, the thickness is 0.3 mm, the height is 305 mm, the entire circumference of the upper part 10 of the body 4 is 373 mm, the height is 70 mm, and the entire circumference of the lower part 11 of the body 4 is 385 mm. And height 99m
m, the width α of the four transverse ribs 13, 14, 15, 16 is 7
mm and depth β are 2.5 mm, the maximum vertical length ε of the first reinforcing panel 21 is 62.0 mm, the maximum circumferential length 周 of the first reinforcing panel 21 is 40.0 mm, and the circumferential reinforcing is performed. The circumferential length of the rib 22 is 30.0 mm and the width is 5.0 m.
m, the depth of the reinforcing rib 22 is 2.5 mm, the circumferential length of the reinforcing rib 31 is 60.0 mm and the width is 5.0 mm, the depth of the reinforcing rib 31 is 2.5 mm, and the circumference of the reinforcing rib 32 is circumferential. Direction length 35.0mm, width 5.0mm, reinforcement rib 31
The width of the lateral rib 12 between the upper part 10 and the lower part 11 of the body 4 is 15.5 mm, and the outer surface of the upper part 10 of the lateral rib 12 on the left and right sides of the synthetic resin bottle 1 From the outer surface of the upper portion 10 of the lateral rib 12 at the front and back of the synthetic resin bottle 1, and the width π of the normal portion of the bottom portion 12c of the lateral rib 12. 5.00 mm and the entire circumference of the bottom 12 c are 349
mm, the maximum width ρ of the crush prevention rib portion 33 is 9.00 mm, the circumferential length of the widened portion is 40.00 mm, and the maximum width ρ of the crush prevention rib portion 34 is 9.00 mm and the circumferential length of the widened portion. 30.00 mm, the circumferential length of the second reinforcing panel 23 is 50.00 mm, and the vertical length is 77.0 mm.
0 mm, upper side uneven strip 25 and lower side uneven strip 26
The length in the circumferential direction is 42.00 mm, the length in the vertical direction is 34.00 mm, the width λ of one of the ridges of the ridges 25 and 26 is 6.00 mm, the width of the recess 27 is 9.00 mm, and the length in the circumferential direction. 50.00 mm, the circumferential length of the third reinforcing panel 24 is 30.00 mm, and the vertical length is 77.00 m
m, the circumferential length of the upper-side uneven ridges 28 and the lower-side uneven ridges 29 of 24.00 mm and the vertical length of 34.
00 mm, the width λ of one uneven strip of the uneven strips 28 and 29 is 6.00 mm, the width of the recess 30 is 9.00 mm and the circumferential length is 30.00 mm, the width of the lateral rib 5 is 7.00 mm, the mouth 2 The synthetic resin bottle 1 of the present invention having the shape shown in FIGS. 1 to 3 having a vertical length of the shoulder 3 of 80.00 mm and a vertical length of the bottom 33.5 mm, and a first reinforcing panel. 21 without forming the transverse ribs 13, 14, 1
5 and 16 are formed continuously in the circumferential direction, and a synthetic resin bottle 1 is formed in exactly the same manner as the synthetic resin bottle 1 of the present invention having the first reinforcing panel 21. A second pressing test was performed by pressing a disk of φ10 mm against the reinforcing panel surface and a portion corresponding to the reinforcing panel surface using the resin bottle 1, and as a result, the results shown in Table 1 were obtained.

[0035]

[Table 1]

As is apparent from Table 1, the pressing pressure at which the synthetic resin bottle 1 was crushed was 2.5 kg · f for the synthetic resin bottle 1 having the first reinforcing panel 21 and the first pressure. It was found that the synthetic resin bottle 1 without the reinforcing panel 21 was 2.0 kg · f, and the pressing pressure at which crushing occurred was greater in the synthetic resin bottle 1 with the first reinforcing panel 21. .
That is, the first reinforcing panel 21 improves the pressing pressure at which the crushing occurs, and the strength of the synthetic resin bottle 1 having the first reinforcing panel 21 with respect to the pressing pressure increases. The distance pressed until the collapse occurs is 6 mm for the synthetic resin bottle 1 having the first reinforcing panel 21 and 3 mm for the synthetic resin bottle 1 without the first reinforcing panel 21.
mm, and it was found that the synthetic resin bottle 1 having the first reinforcing panel 21 was twice as long as the synthetic resin bottle 1 having no first reinforcing panel 21. That is, this first
The reinforced panel 21 increases the pushing distance until crushing occurs, improves flexibility, and is hard to crush. Therefore, the crush deformation of the synthetic resin bottle 1 having the first reinforcing panel 21 can be reduced by a conventional synthetic resin bottle. It was found that prevention can be more reliably achieved as compared with No. 1.

In the above-described example, the synthetic resin reinforcing panel of the present invention is used for a synthetic resin bottle. However, the synthetic resin reinforcing panel of the present invention is different from the above-described bottle in addition to the bottle. The present invention can be applied to any reinforcing panel made of a synthetic resin to which a great external force is applied.

[0038]

As is clear from the above description, according to the synthetic resin reinforcing panel of the present invention, a part of the region where the lateral rib is formed is continuous with the concave groove of the lateral rib. Since the concave portion having the predetermined shape is formed, the strength of the synthetic resin reinforcing panel can be increased, and the synthetic resin reinforcing panel can have flexibility.
The force applied to the synthetic resin reinforcing panel can be dispersed. Therefore, crushing deformation that does not restore the reinforcing panel due to such a force is prevented. In particular, the recesses allow the lateral ribs to gradually disappear within the recesses, thereby distributing the vertical forces more effectively.

Also, since the synthetic resin reinforcing panel is used on the upper part of the body of the synthetic resin bottle so that the lateral ribs extend in the circumferential direction, the strength of the synthetic resin bottle can be increased. In addition, by making the synthetic resin bottle flexible and dispersing the force applied to the synthetic resin bottle, the external force applied to the synthetic resin bottle and the pressure reduction or pressurization inside the synthetic resin bottle , It is possible to more effectively prevent crushing deformation of the synthetic resin bottle that does not restore.

Accordingly, the synthetic resin bottle can be reliably used for a wide range of applications, such as filling with a liquid such as hot fill or cold fill, and the appearance of the synthetic resin bottle is impaired. Can be prevented, and a decrease in the commercial value of the synthetic resin bottle can be prevented.

Furthermore, since the depth of the concave portion of the synthetic resin reinforcing panel is set so as to gradually and continuously increase from the edge toward the center, the synthetic resin bottle is inserted into the concave portion of the concave portion. The fingers, such as the thumbs, to be held can be fitted accurately. Thereby, the synthetic resin bottle becomes easy to hold, and when the liquid in the synthetic resin bottle is poured out, the liquid can be poured out in a stable state.

[Brief description of the drawings]

FIG. 1 is a front view showing an example of an embodiment of a synthetic resin bottle according to the present invention. FIG. 2 is a left side view of this example,
FIG. 3 is a plan view.

FIG. 2 is a left side view of the synthetic resin bottle of the example shown in FIG.

FIG. 3 is a plan view of the synthetic resin bottle of the example shown in FIG.

FIG. 4 is a partially enlarged view partially showing horizontal ribs of the synthetic resin bottle of the example shown in FIG. 1;

FIG. 5 is a sectional view taken along the line VV in FIG. 1;

6 shows a first reinforcing panel of the synthetic resin bottle of the example shown in FIG. 1, (a) is a cross-sectional view along the line VIA-VIA in FIG. 1, and (b) is a line VIB-VIB in FIG. Sectional view along
FIG. 2C is a sectional view taken along a line VIC-VIC in FIG. 1.

[Explanation of symbols]

1 ... synthetic resin bottle, 2 ... mouth, 3 ... shoulder, 4 ... trunk,
5 horizontal rib, 6 bottom, 10 top, 11 bottom
12 ... lateral ribs, 13, 14, 15, 16 ... lateral ribs, 21 ... first reinforcement panel

Claims (4)

[Claims] A predetermined number of lateral ribs each comprising a groove extending in the lateral direction are formed, and a part of a region where the lateral rib is formed is continuous with the groove of the lateral rib. A concave portion having a predetermined shape is formed, and the depth of the concave portion gradually and continuously increases from the edge of the concave portion toward the center, and the depth of the concave portion is
In the vicinity of the edge of the recess, the depth is set shallower than the depth of the groove of the lateral rib, and near the center of the recess, the depth is set deeper than the depth of the groove of the lateral rib. Reinforced panel made of synthetic resin. 2. A plurality of the lateral ribs are formed, and a part of the plurality of lateral ribs has a depth of the concave portion larger than a depth of a concave groove of the lateral rib. It is formed in a shallow region, and the depth of the lateral rib in this region is gradually reduced as the depth of the concave portion of the reinforcing panel becomes deeper. The other lateral rib is formed over a region where the depth of the concave portion is smaller than the depth of the concave groove of the lateral rib and a region where the depth of the concave portion is deeper than the depth of the concave groove of the lateral rib. The other lateral rib is formed in a region where the depth of the concave portion is shallower than the depth of the concave groove of the lateral rib, but the depth of the concave portion is larger than the depth of the concave groove of the lateral rib. 2. The synthetic resin according to claim 1, wherein the resin disappears in a deep region. Reinforcing panel. 3. The synthetic resin according to claim 1, wherein the concave portion that is continuous with the concave groove of the lateral rib is formed in a circular shape, an elliptical shape, an elliptical shape, or a rhombic shape. Reinforced panels. 4. A mouth, a shoulder connected to the mouth, a body connected to the shoulder, and a bottom connected to the body, each of which is integrally formed of synthetic resin. The synthetic resin bottle body according to any one of claims 1 to 3, wherein the synthetic resin reinforcing panel according to any one of claims 1 to 3 is used at an upper portion of the body so that the lateral ribs extend in a circumferential direction. A synthetic resin bottle.