JP4622540B2 - Easy volume reduction container - Google Patents

Description

The present invention relates to a volume-reducing container that can be easily crushed and discarded after use of the contents of a flexible plastic container such as a PET bottle, and more specifically, at a predetermined location of the container. The present invention relates to an easily volume-reducing container in which a folded shape is difficult to restore by forming a pushing rib instructing the folding order and a folding rib connected to the pushing rib.

Most of the current plastic containers are not designed for easy disposal and recycling,
Even if you try to crush to reduce the volume, it won't collapse easily, even if you can crush it,
It is a fact that the volume cannot be reduced as much as the shape is easy to restore. However, as the plastics are recycled, it is preferable that the plastic container is supplied in a state in which it is easy to reduce the volume in advance for the purpose of reducing the volume of the plastic container and improving the efficiency of transportation and temporary storage.
The following technologies are known as such easy volume reduction containers.

JP 2000-72123 A JP 2000-85738 A JP 2000-190935 A

As shown in FIG. 16, the easily volume-reducing container a <b> 1 of Patent Document 1 has two inclined ribs d arranged in a V shape on the pyramid portion c of the shoulder b, and the square tube portion e of the shoulder b. A vertical rib f continuous to the lower end of the inclined rib d is disposed, a vertical rib h is disposed at the center of the upper body g1 of the body g, and two inclined ribs i are inverted V to the lower body g2. The lateral ribs j and k are disposed at the connecting portion between the shoulder portion b and the upper trunk portion g1, and the upper trunk portion g1 and the lower trunk portion g2. If the pair of opposing vertical ribs h are pushed from both sides, the easily volume-reducing container a1 can be crushed in a Σ shape, and the upper body g1 and the bottom L are also crushed and further rolled and folded from the crushed bottom L. The volume reduction state suitable for disposal is described.

As shown in FIG. 17, the easily volume-reducing container a <b> 2 of Patent Document 2 has a shoulder lateral rib m disposed on the pyramid portion c of the shoulder b, and two inclined ribs below the shoulder lateral rib m. d1 is arranged in a V shape, and the body g
A longitudinal rib h1 is disposed at the center of the upper body g1 and a lateral rib h2 is disposed at a predetermined position. Two inclined ribs i are arranged in an inverted V shape on the lower body g2. Lateral ribs j and k are arranged at the connection portion between the shoulder b and the upper trunk g1, and the upper trunk g1 and the lower trunk g2.
If both sides of the body g are pushed so that only a pair of opposing vertical ribs h1 are bent, the easily reduced volume container a2 can be crushed flat, and at the same time, the portions near the corners of the lateral ribs j and k can be pushed. For example, the shoulder portion b and the bottom portion L are also crushed, and if the crushed bottom portion L is rounded and folded, the volume is reduced.

As shown in FIG. 18, the volume-reducing container a <b> 3 of Patent Document 3 includes a shoulder guiding rib n near the shoulder b of the trunk g and a bottom guiding rib o near the bottom L, and further includes a shoulder A storage guide rib p is formed over the corners of b and the body g, a shoulder storage rib q is formed on the shoulder b, and a bottom storage rib r is formed near the bottom L of the body g. Then, starting from each of the induction ribs n, o, and p described above, the easily reduced volume container a3 can be folded inward, and the neck portion s and the bottom portion L are connected to the trunk portion g by the shoulder portion and the bottom portion storing ribs q and r. It can be stored on the side and is in a reduced volume state.

However, the easy volume reduction container a1 of Patent Document 1 is a square bottle type container, and the body g
And the four sides of the shoulder b are the same shape, so it can be crushed in a Σ shape from any surface, but it is nothing but a bellows shape, so it can be easily restored even after being crushed. It is difficult to achieve a convenient flat volume reduction state.

Further, the volume-reducing container a2 of Patent Document 2 is also a square bottle type container, and the four surfaces of the trunk part g and the shoulder part b have the same shape, and can be flattened from any surface. However, since it pushes open all corners, it is difficult to put a crease and gradually becomes easier to restore.

Furthermore, the easily reduced volume container a3 of Patent Document 3 also has difficulty in determining which one of the corners with or without the storage guide ribs p is folded inward and depends on the choice of the discarder. When the corner with p is folded inward, the pushing force can be small, but it is easy to restore because there is no structure to maintain the volume-reduced state at both corners. When you fold it, you can't push it in without applying considerable force.

Furthermore, when the body g and the shoulder b are opposed to each other and have the same shape and the corners without the storage guiding ribs p are crushed inward, the shoulder guiding ribs n and the bottom guiding ribs o are folded. Although there is a contribution in terms of ease of later crushing, it is difficult to reduce the crushing force, and it is difficult to achieve a volume reduction state that is convenient for disposal. Moreover, this easy volume reduction container a3 gives priority to volume reduction,
Since the reinforcing ribs necessary for maintaining the shape are omitted, the heat-resistant property tends to be poor, especially when the temperature is high.

Therefore, the object of the present invention is to easily understand the starting point of volume reduction, easy to crush even with a relatively weak force, can be folded, and can be easily reduced and discarded without being restored. The object is to provide a container.

The present invention has been proposed in order to achieve the above object, and is characterized by having the following configuration.
That is, according to the present invention, there is provided a flexible plastic container having a neck portion, a shoulder portion, a trunk portion, and a bottom portion sequentially from above, and a reinforcing rib at an intermediate portion of the trunk portion, The body part and the body part have shoulder push ribs and body part push ribs in the vertical direction in mutually facing parts, and two series of shoulder crease ribs and body parts that are bent correspondingly when both the push ribs are pushed in. A fold rib, and the body includes a bottom fold rib at a boundary with the bottom, and the body includes the body fold rib between the body push rib and the body fold rib. An easily volume-reducing container comprising an upper inclined rib extending downward from the upper end of the part and a lower inclined rib extending upward from above the bottom folding rib is provided.

According to the present invention, the shoulder portion and the body portion have at least two sets of two corner portions facing each other, and each corner portion has a shape chamfered by a straight line and a curve, and the shoulder pushing rib And the body pushing ribs are on a pair of the corners facing each other, and the shoulder fold ribs and the body crease ribs are adjacent to both sides of the other pair of the corners facing each other. And the above-described volume-reducing container on the trunk.

Moreover, according to this invention, the said volume reduction container which provided the grip part between the said shoulder part pushing rib and the said trunk | drum pushing rib is provided.

Moreover, according to this invention, the said volume reduction container which provided the pressing recessed part on the said trunk | drum adjacent to the both sides of the said trunk | drum pushing rib and on both sides of the said reinforcing rib is provided.

Further, according to the present invention, instead of the shoulder pressing rib and the grip portion, a radial pressing rib is provided on the shoulder portion and the trunk portion surrounded by the shoulder fold rib and the upper inclined rib. The provided easily volume-reducing container is provided.

The easy volume reduction container of the present invention, when the shoulder pushing rib and the trunk pushing rib are pushed in, both the pushing ribs are bent inward, and among the two series of shoulder folding ribs and the trunk folding rib,
One of the crease ribs in the series closer to both push ribs on the push side bends inward with the operation of the upper and lower inclined ribs, and the portion that is pushed in from the push-in portion of the shoulder and trunk In addition, the bottom folding ribs on both sides of the pushed-in ribs are folded inward, the shoulders and the trunk are folded inward, and the other bottom folding ribs are also folded inward. And fold the bottom part inward. On the other hand, the reinforcing ribs at the middle part of the body part can increase the rigidity and strength of the container and make it difficult to deform.
Therefore, the container is difficult to deform even when the temperature rises due to its high rigidity and strength, and the portion to be pushed in has secured a large space. The container can be folded and folded, and it is difficult to restore the container. Thus, the volume can be truly reduced, and the disposal becomes easy.

In addition, when the shoulder pushing rib and the trunk pushing rib on the corner are pushed in, the shoulder crease rib and the trunk crease rib adjacent to the one series of corners closer to both pushing ribs bend inward. , Due to the rigidity of the corners with both pushing ribs, it is difficult to restore the shoulder and torso once pushed in,
Due to the rigidity of the corners adjacent to both crease ribs, stress is concentrated on both crease ribs so that the folds are bent. Therefore, according to this configuration, it is possible to push in even with a weaker force, and it becomes more difficult to restore.

Moreover, when it pushes in from a pushing recessed part, stress concentrates on a pushing recessed part, Then, the shoulder part pushing rib on a corner | angular part and the trunk | drum pushing rib can be pushed in, and a container can be finally folded. Therefore, according to this configuration, the starting point of volume reduction can be clearly indicated by the pressing recess, and further, the pressing can be performed with a weaker force due to the pressing recess.

In addition to the above effects, the container is easy to hold when the container is held by a radial push rib and the shoulder push rib and the trunk push rib on the corner are pushed in to fold the container. The fall can be prevented, the starting point of volume reduction can be specified, and the radial pushing ribs can be used to push in with a weaker force.

Furthermore, if the container is held by gripping the grip part, and the container is folded by pushing the shoulder pressing rib and the trunk pressing rib on the corner from this, the container is easy to hold and prevents falling, The starting point of volume reduction can be specified.

  The best mode for carrying out the present invention will be described below with reference to the drawings.

FIG. 1 is a plan view of the easily reduced volume container of the present invention, FIG. 2 is a side view of the easily reduced volume container of the present invention viewed from the X direction in FIG. 1, and FIG. 3 is the easily reduced volume container of the present invention. 1 is a side view of the easily reduced volume container of the present invention, FIG. 4 is a side view of the easily reduced volume container of the present invention viewed from the Z direction of FIG. 1, and FIG. 5 is a bottom view of the easily reduced volume container of the present invention. 6 is a cross-sectional view taken along the line AA of FIG. 2 of the easily volume-reducing container of the present invention.

In these drawings, the easily volume-reducing container 1 has a neck part 2, a shoulder part 3, a trunk part 4, and a bottom part 5 in order from the top, and a reinforcing peripheral rib 6 in the middle part of the trunk part 4. It is a flexible plastic container 7, and the shoulder portion 3 and the trunk portion 4 have a shoulder pushing rib 8 and a trunk pushing rib 9 in the vertical direction at portions facing each other, and both the pushing ribs 8, 9 are pushed in. In this case, there are two series of shoulder crease ribs 10 and trunk crease ribs 11 that bend correspondingly, and the trunk part 4 has a bottom fold rib 12 at the boundary with the bottom part 5, The body 4 includes an upper inclined rib 13 extending downward from the upper end of the body 4 and a lower inclined rib 14 extending upward from above the bottom folding rib 12 between the body pushing rib 9 and the body fold rib 11. Is provided. Then, a cap 15 is screwed onto the neck 2 of the container 7 in the easily volume-reducing container 1 after the contents are accommodated. The container may be sealed with a cap or other sealing member by screwing, capping, winding, heat sealing, or the like.

The container 7 is a quadrangular bottle having a substantially square cross section of the shoulder 3 and the body 4.
The shoulder 3 and the body 4 face each other with four corners 3A, 3A, 3B, 3B and 4A, 4A,
4B and 4B, and the corners 3A, 3B and 4A, 4B are chamfered with straight lines and curves. The container 7 is not limited to a square bottle having a square cross section, but a rectangle,
The polygon may be a pentagon or more, a circle, and an ellipse. Of course, the circle and the ellipse do not have the corners 3A, 3B and 4A, 4B. The material of the container 7 is, for example, a flexible plastic such as polyethylene, polypropylene, polyethylene terephthalate.

The shoulder pushing rib 8 and the trunk pushing rib 9 are on a pair of the corners 3A, 3A and 4A, 4A of the shoulder 3 and the trunk 4 facing each other, and have a convex shape inside. It will be bent inward during the volume reduction operation. Further, the shoulder crease rib 10 and the trunk crease rib 11 are a pair of other corners 3B, 3B, and 4 of the shoulder 3 and the trunk 4 facing each other.
B and 4B are on the shoulder 3 and the trunk 4 adjacent to both sides, and therefore the shoulder push rib 8 and the trunk push rib 9 are adjacent to the shoulder crease rib 10 and the trunk crease rib 11. It will be. During the volume reduction operation, the shoulder crease ribs 10 and the trunk crease ribs 11 that are closer to the push-in shoulder push rib 8 and the trunk push rib 9 are bent inward. For this reason,
Of the shoulder portion 3 and the body portion 4, the portion to be pushed in will secure a larger space than the portion to be pushed in, so that excessive pushing will not occur and restoration will not occur.

Further, due to the rigidity of the corners 3B and 4B adjacent to the fold ribs 10 and 11, the stress is concentrated on the fold ribs 10 and 11, and the folds are pushed with a weaker force. In addition, due to the rigidity of the corners 3A and 4A having the both pushing ribs 8 and 9, the shoulder 3 and the body 4 that have been pushed in are difficult to restore, and it becomes more difficult to restore. The shoulder pressing rib 8 and the trunk pressing rib 9
In addition, the shoulder crease rib 10 and the trunk crease rib 11 both have a convex shape on the inside, and the push-in ribs 8 and 9 are bent in the direction of opening outward during the volume reduction operation. 1
1 is bent inward.

As described above, the bottom folding rib 12 is provided at the boundary between the body portion 4 and the bottom portion 5, has a convex shape on the inside, and is scheduled to be bent inside, and the shoulder portion 3 of the container 7. And after folding the trunk | drum 4, it is for folding the bottom part 5 further inside.
The reinforcing circumferential rib 6 is generally located in the middle part of the body part 4 and has a convex shape on the inside, increasing the rigidity and strength of the body part 4 to prevent deformation, and particularly causing deformation at high temperatures. It is hard to get up and improves heat resistance.

The position where the reinforcing circumferential rib 6 is formed does not strictly mean the middle part of the body part 4 but has a meaning of the middle part of the body part. The reinforcing ribs need not be continuous over the entire circumference, and may be formed intermittently. Further, the upper inclined rib 13 at the upper end portion of the trunk portion 4 is used.
The lower inclined ribs 14 at the lower end are for facilitating the volume reduction operation. The upper inclined rib 13 plays an inductive role when the body 4 near the shoulder 3 in the state of FIG. 8 shifts to the state of FIG. 9, and the lower inclined rib 14 also has an inductive role at the timing of FIG. To fulfill. Both the inclined ribs 13 and 14 are provided with a shoulder pushing rib 8 and a trunk pushing rib 9.
There is also an action to compensate for the lack of rigidity and strength due to the provision of the two series of shoulder crease ribs 10 and trunk crease ribs 11 and bottom fold ribs 12, and the rigidity and strength of the shoulder 3 and the trunk 4 are increased. It is possible to prevent further deformation, and particularly to prevent deformation at high temperatures, thereby improving heat resistance.

Further, grip portions 20 and 20 are provided on the corner portions 4A and 4A between the shoulder portion pressing rib 8 and the trunk portion pressing rib 9. The grip portion 20 is intended to make it easier to hold the easily volume-reducing container 1, and one grip portion 20 can be used as a starting point for volume reduction operation, and the shoulder portion on one corner 4A. And if the trunk | drum pushing ribs 8 and 9 are pushed in, the container 7 can be folded.

In addition, a pressing recess 21 is provided on the body 4 adjacent to both sides of the pair of corners 4A with the body pressing rib 9 and adjacent to the reinforcing circumferential rib 6. . When one of the pushing recesses 21 is pushed in as a starting point for volume reduction operation, stress concentrates on the pushing depression 21 and then pushes the shoulder pushing rib 8 and the trunk pushing rib 9 on the corners 3A and 4A. As a result, the container 7 can be finally folded.

7 shows the easy volume reduction container 1 shown in FIGS. 1 to 6 except for the above-mentioned pushing recess 21. The easy volume reduction container 1 in FIG. In this case, except that the initial pushing force is slightly increased, it is the same as that shown in FIGS. 1 to 6 and can sufficiently function.

Next, a method for using the easily volume-reducing container 1 (see FIGS. 1 to 7) configured as described above will be described.
After consuming the contents of the container 7, the inside of the container 7 is washed and the lid 15 is removed, and first, as shown in FIG. 8, the pushing recess 21 on the trunk 4 (the same position in the case of FIG. 7). When the is pushed in, the trunk portion pushing rib 9 is bent inward, and the trunk portion 4 is dented in a V shape with the reinforcing circumferential rib 6 as a boundary. Further, when the grip part 20 on the trunk part 4 is pushed in, the shoulder pushing rib 8 is bent inward, and the upper half part from the reinforcing circumferential rib 6 in the shoulder part 3 and the trunk part 4 as shown in FIG. However, the shoulder crease rib 10 and the trunk crease rib 11 are bent, and the upper half of the push-in shoulder 3 and the upper half of the trunk 4 are inverted by the guidance of the upper inclined rib so that the shoulder on the push-in side is reversed. 3 and the upper half of the body 4 are stored.

When the lower half portion is pushed in from the reinforcing circumferential rib 6 in the trunk portion 4, as shown in FIG. 10, the lower half portion is guided by the lower inclined rib with the trunk fold rib 11 and the bottom fold rib 12 as a boundary. It bends, and the lower half of the push-in side is pushed in and stored in the lower half of the push-down side as described above. Further, when the bottom portion 5 is pushed inward, as shown in FIG. 11, the bottom portion 5 is bent and pushed in with the body fold rib 11 and the bottom fold rib 12 as a boundary, and as shown in FIG. The volume reduction container 1 is completely folded. Although the feature of the present invention is that the starting point of the volume reduction operation is easy to understand, it is still impossible to completely control the behavior of the discarder,
In preparation for crushing from the crease rib side, some or all of the various rib configurations of the present invention can be formed in an auxiliary manner by overlapping them at positions shifted by 90 °.

A volume-reducing container 1a shown in FIG. 13 excludes the shoulder pushing rib 8 and the grip part 20 from the volume-reducing container 1 shown in FIGS. Radial push ribs 22 are provided on the shoulder 3 and the body 4 surrounded by the upper reinforcing inclined rib 13. The shoulder crease rib 10a is formed in the easy volume reducing container 1 shown in FIGS.
These two shoulder crease ribs 10 are connected. The radial pushing ribs 22 are provided with a concave portion 23 at the center, and provided with eight ribs 24 radially at an angle of 45 degrees around the concave portion 23. Therefore, since the radial pushing ribs 22 are provided in the container 7, the easily volume-reducing container 1 a can be easily held, and one radial pushing rib 22 can be used as a starting point for the volume reducing operation. If the shoulder part and trunk | drum part pushing ribs 8 and 9 on 4A are pushed in, it can push in with a weaker force and can fold the easy volume reduction container 1a very easily. Since other configurations and operations are the same as those shown in FIGS. 1 to 6, reference numerals are assigned to the drawings, and descriptions thereof are omitted.

The easy volume reduction container 1b shown in FIG. 14 omits the grip part 20 from the easy volume reduction container 1 shown in FIGS. 1 to 6, and connects the shoulder pressing rib 8 and the trunk pressing rib 9 to the pressing rib. 3
In addition, the push-in recess 21 is omitted, and reinforcing panels 31 and 32 are provided on the adjacent body portion 4 across the reinforcing circumferential rib 6 so as not to interfere with the structures of the various ribs described above. Is. In this structure, in the container 7, the decompression in the container is gently deformed and absorbed so that the entire side wall surface is bent. The reinforcing panels 31 and 32 are provided so that local deformation does not occur when the side wall surface is bent, and contribute to shape maintenance, so that shape change due to decompression can be prevented from becoming obvious. Since other configurations and operations are the same as those shown in FIGS. 1 to 6, reference numerals are assigned to the drawings, and descriptions thereof are omitted.

The easily reduced volume container 1c shown in FIG. 15 omits the grip portion 20 from the easily reduced volume container 1 shown in FIGS. 1 to 6, and the shoulder pushing ribs 8a and the trunk pushing ribs 9a with end recesses at the positions.
Furthermore, the push-in recess 21 is omitted, and the above-described various rib structures are formed on the barrel 4 adjacent to each other with the reinforcing rib 6 interposed therebetween, in substantially the same manner as the easily-reducing container 1b in FIG. Reinforcing panels 31 and 32 are provided so as not to interfere. The structure shown in Example 4 can also prevent the local deformation by the reinforcing panels 31 and 32 when the inside of the container 7 is in a decompressed state and the side wall surface is bent, and contributes to shape retention. It is possible not to make it. Since other configurations and operations are the same as those shown in FIGS. 1 to 6, reference numerals are assigned to the drawings, and descriptions thereof are omitted.

As mentioned above, although Embodiment 1 thru | or 4 of this invention was demonstrated, it should be understood that a specific structure is not limited to this and the change in the range which does not deviate from the summary of this invention is possible suitably. .

The easily volume-reducing container of the present invention can be crushed and folded with a relatively weak force, and can be used in a case where volume reduction is strictly required such that restoration is not permitted. Get higher.

It is a top view of the easy volume reduction container shown in Example 1 of this invention. It is the side view seen from the X direction of FIG. It is the side view seen from the Y direction of FIG. It is the side view seen from the Z direction of FIG. It is a bottom view of the easy volume reduction container shown in Example 1 of this invention. It is sectional drawing which follows the AA line of FIG. It is a side view of the modification of the easy volume reduction container shown in Example 1 of this invention. It is a side view which shows the deformation | transformation order of the easy volume reduction container shown in Example 1 of this invention. It is a side view which shows the state which the deformation | transformation order advanced further from the state of FIG. FIG. 10 is a side view showing a state in which the deformation order has further advanced from the state of FIG. 9. It is a side view which shows the state which the deformation | transformation order advanced further from the state of FIG. It is a perspective view which shows the final form of the folding state of the easy volume reduction container of this invention. It is a side view of the easy volume reduction container shown in Example 2 of this invention. It is a side view of the easy volume reduction container shown in Example 3 of this invention. It is a side view of the easy volume reduction container shown in Example 4 of this invention. It is a side view of the conventional volume-reducing container described in Patent Document 1. It is a side view of the conventional volume-reducing container described in Patent Document 2. It is a perspective view of the easy volume reduction container of the prior art example described in patent document 3. FIG.

Explanation of symbols

1,1a, 1b, 1c Easy volume reduction container a1, a2, a3
2, s neck part 3, b shoulder part 3A, 3B, 4A, 4B corner part 4, g trunk part 5, L bottom part 6 reinforcing rib 7 container 8 shoulder pushing rib 9 trunk pushing rib 10 shoulder crease rib 11 trunk Partial fold rib 12 Bottom fold rib 13 Upper inclined rib 14 Lower inclined rib 15 Cap 20 Grip portion 21 Pushing recess 22 Radial pushing rib 23 Recess 24 Rib 31, 32 Reinforcement panel c Pyramid part d, d1, i Inclined rib e Square tube Part f, h, h1 Vertical rib g1 Upper trunk part g2 Lower trunk part j, k Lateral rib m Shoulder lateral rib n Shoulder guiding rib o Bottom guiding rib p Storage guiding rib q Shoulder storing rib r Bottom storing rib

Claims (5)

A flexible plastic container having a neck portion, a shoulder portion, a trunk portion, and a bottom portion in order from above, and a reinforcing rib in the middle portion of the trunk portion, wherein the shoulder portion and the trunk portion face each other. And a shoulder pressing rib and a trunk pressing rib in the vertical direction, and two shoulder shoulder crease ribs and a trunk fold rib that bend correspondingly when both the pressing ribs are pressed, and The trunk part has a bottom folding rib at the boundary with the bottom part, and the trunk part is an upper slope extending downward from the upper end of the trunk part between the trunk pushing rib and the trunk crease rib. An easily volume-reducing container comprising a rib and a lower inclined rib extending upward from above the bottom folding rib. The shoulder portion and the trunk portion have at least two sets of two corner portions facing each other, each corner portion being chamfered with a straight line and a curve, and the shoulder pushing rib and the trunk pushing rib face each other. The shoulder crease rib and the trunk crease rib are on the shoulder and the trunk adjacent to both sides of the other pair of the corners facing each other. Item 1. The volume-reducing container according to item 1. The easily volume-reducing container according to claim 1 or 2, wherein a grip portion is provided between the shoulder pressing rib and the trunk pressing rib. The easily volume-reducing container according to any one of claims 1 to 3, wherein a pressing recess is provided on the barrel adjacent to both sides of the barrel pressing rib and adjacent to the reinforcing rib. 5. A radial push rib is provided on the shoulder portion and the trunk portion surrounded by the shoulder fold rib and the upper inclined rib instead of the shoulder push rib and the grip portion. The easily volume-reducing container according to any one of the above items.

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