JP4496468B2 - Crushable packaging container - Google Patents

Description

  The present invention relates to a packaging container, and more particularly to a packaging container that can be crushed after use and can be reduced in volume when discarded.

  The packaging container is formed to have a predetermined volume for storing various things, but after it is used, it is also discarded as “garbage”. This type of packaging container is convenient if it can be easily crushed because the trash bin that throws it away will soon fill up unless the volume is reduced as much as possible after use.

  On the other hand, since this type of packaging container is used as various containers, there is a need to have rigidity necessary for use as a container. In other words, this type of packaging container must be formed with a certain degree of rigidity so that the shape of the container can be maintained.

  As described above, for example, Patent Document 1 or Patent Document 2 describes a packaging container that has a certain degree of rigidity as a container and that can be crushed to reduce its volume when discarded. There is something.

  In Patent Document 1, as shown in FIG. 11, “a crushing groove is provided to facilitate crushing the container in the manufacturing process of PET bottles, canned foods, etc., and the groove has various groove shapes and positions according to the shape of the various containers. It has been proposed to apply a “crash line” that does not return to the original shape by being easily and reliably crushed by an external force such as shoes.

Further, in Patent Document 2, as shown in FIG. 12, for the purpose of “providing a plastic cup capable of volume reduction by crushing”, “an inverted frustoconical side wall 1 and a thread tail around the periphery” are provided. 3. A plastic cup made by injection molding comprising a bottom plate 2 having a flange 3 and a flange 4 at an opening, wherein the side wall intersects with a plurality of vertical sections passing through the central axis 9 of the plastic cup, wherein the bottom plate 2 is distorted outward. 1 and the bottom plate 2 are provided with a thin line 5 formed by a recessed groove, and a notch 8 that opens outward is provided at the thread bottom 3 portion through which the thin line passes. "Cup" has been proposed.
Registered Utility Model No. 3094406 Gazette, summary, representative figure Japanese Patent Laid-Open No. 2001-180640, abstract, representative diagram

  However, the “crash line” proposed in Patent Document 1 is a groove “provided in the manufacturing process of PET bottles, canned foods, etc.”, but this groove or “crash line” is “simple and reliable with external force from shoes, etc.” Therefore, it is considered that the rigidity necessary for the container is insufficient.

  In addition, the “easily disposable plastic cup” proposed in Patent Document 2 must be “provided with a notch 8 that opens toward the outside in the portion of the yarn bottom 3 through which the thin line 5 passes”. Therefore, it is thought that there is a problem in workability, and it is necessary to dispose the synthetic resin of the part that formed the “notch 8” and to prevent it from being mixed into the product. Is thought to be.

  In addition, this type of packaging container is often molded integrally with a synthetic resin sheet, and since it is molded into the shape of a “container”, the one crushed by its elastic force is again It may return to the original. In other words, even if this type of packaging container is crushed to reduce its volume after use, it is almost in its original state when placed in the trash can, and the crushing operation of the folding corner is completely wasted and "gets tired". become.

  Therefore, the present inventors, as a packaging container that can be crushed after use to reduce the "bulk", how can it be easily crushed and not restored while maintaining the necessary rigidity? As a result of various studies on whether or not to do so, the present invention has been completed by newly discovering that the bottom surface or the like is crushed inside the container and brings about a good result.

  That is, the object of the present invention is to allow the bottom surface and the vicinity thereof to enter the inside of the container so that it can be easily crushed while maintaining the rigidity necessary for storing the product as it is. It is an object of the present invention to provide a packaging container that can prevent the state from being easily restored.

In order to solve the above problems, first, the means taken by the invention according to claim 1 will be described with reference numerals used in the description of the best mode described below.
“A packaging container 10 having a bottom surface 11, a side wall 12 rising from now on, and a flange portion 15 integrated on the outer periphery of the upper end of the side wall 12,
Between the side wall 12 and the bottom 11, provided with a plurality of indentations 14 that span these settings ribs or bent surface 13 at the top of each recess 14,
In addition, a bent line portion 14a that is inclined upward from the bottom surface 11 and rises linearly is formed at the center of each recess 14, and a flat contact surface 14b is formed on both sides of the bent line portion 14a. The collapsible packaging container 10 is characterized in that the recess 14 is constituted by the contact surface 14b and the broken line portion 14a.
It is.

  That is, the packaging container 10 according to the first aspect has a general shape including a bottom surface 11, a side wall 12 rising from the bottom surface 11, and a flange portion 15 integrated with an upper end outer periphery of the side wall 12. Yes, it is formed integrally by vacuum or pressure forming with respect to the synthetic resin sheet. In addition, in the packaging container 10 of the best form mentioned later, the cover body 20 may be fitted to this.

  In particular, the packaging container 10 according to claim 1 is characterized in that, as shown in FIGS. 1 to 5, a plurality of recesses 14 are provided between the side wall 12 and the bottom surface 11. Is. As shown in FIGS. 2 and 5, these recesses 14 are recessed when viewed from the outside of the packaging container 10, and protrude inside the packaging container 10.

  Since the overall shape of the packaging container 10 of the best mode to be described later is based on a quadrangle, four corner portions are formed between the side wall 12 and the bottom surface 11 as shown in FIG. . Therefore, in the packaging container 10 of the best mode, the dents 14 are formed in each of the four corner portions, but each dent 14 (two is provided in one diagonal line of the bottom surface 11). ) May be provided. Further, the recess 14 may be implemented by forming a large number of recesses so as to cover the entire area between the side wall 12 and the bottom surface 11.

  Further, a rib or bent surface 13 having a shape illustrated in FIG. 3 or FIG. 4 is formed on the upper side of each recess 14. This rib or bent surface 13 acts to buckle by the force when crushing the packaging container 10 and to push the bottom surface 11 and its vicinity into the inside of the side wall 12, as shown in FIGS. Various forms as shown in (a) to (c) are conceivable.

  The ribs or bent surfaces 13 shown in FIGS. 3 (a) and 3 (c) relate to the best mode, and as shown in FIG. 2, “steps” formed over the entire circumference of the side wall 12 in the lateral direction. Is. The side walls 12 positioned above and below the rib or bent surface 13 are divided into a large portion 12a and a small portion 12b with the rib or bent surface 13 as a boundary. It is a “step portion” positioned substantially horizontally between the shape portion 12a and the small shape portion 12b.

  Further, the rib or the bent surface 13 shown in FIG. 3 (b) is the same as the bent surface at the side wall 12 when the lower portion of the side wall 12 and the bottom surface 11 are made continuous with the constricted bent surface. Become. At this time, the upper end of the rib or the bent surface 13, that is, the boundary portion with the side wall becomes the starting point of the “buckling” described above.

  Further, the rib or bent surface 13 shown in FIG. 4A is a longitudinal rib formed on the upper portion of the side wall 12, for example, the large portion 12a. The lower end of the rib is the starting point of the above-mentioned “buckling”, but the rib or the bent surface 13 is formed so as to be located in the lateral direction of the side wall 12 as shown in FIG. Alternatively, as shown in FIG. 4C, it may be formed so as to be positioned in the vertical direction but slightly above the recess 14.

  In the packaging container 10 configured in this way, not only can it be easily molded by vacuum or pressure molding with respect to a synthetic resin sheet, but neither the ribs or the bent surfaces 13 nor the respective recesses 14 constitute an undercut portion. Die cutting is easy.

  In addition, the packaging container 10 is molded from a flat synthetic resin sheet because the rigidity is enhanced by the flange portion 15, the rib or bent surface 13, and each recess 14 and the unevenness around it. Even so, it has sufficient rigidity as a container.

  Now, after this packaging container 10 is used, it is crushed. The operation is performed as follows, and each part operates as follows. In order to crush the packaging container 10, for example, this is placed on a desk, and the entire flange portion 15 on the upper side is pressed with the palm as much as possible. Then, due to the force from the flange portion 15, first, a change appears on the bottom surface 11 instead of the side wall 12.

  That is, the bottom surface 11 is crushed by the reaction force from the desk, but since a recess 14 is formed between the bottom surface 11 and the side wall 12, the recess 14 starts to close from the left and right. For this reason, the left and right portions of the recess 14 begin to collapse inward. This phenomenon in each of the recesses 14 becomes a “trigger” for “smashing”.

  In particular, in the packaging container 10 according to the first aspect, a fold line portion 14a that is inclined upward from the bottom surface 11 and rises linearly is formed at the center of each dent 14, and on both sides of the fold line portion 14a, A flat contact surface 14b is formed, and the recess 14 is configured by the contact surface 14b and the broken line portion 14a.

  That is, in the packaging container 10 according to the first aspect, as shown in FIGS. 1 and 2, the dents 14 are bent line portions 14a that rise in an inclined manner from the bottom surface 11, and planes formed on both sides of the bent line portions 14a. The abutment surface 14b is specifically configured.

  The polygonal line part 14a makes it easy for the reaction force from the bottom surface 11 during the crushing operation to be applied to the entire depression 14, and the contact surfaces 14b that are flat on both sides of the polygonal line part 14a are formed on the polygonal line part 14a. It is easy to get close to each other.

  In other words, since the broken line portion 14a is composed of the broken line portion 14a and the abutting surface 14b, not only the recess 14 itself but also the bottom surface 11 and the small portion 12b thereon are likely to be plastically deformed. As a result, the entire crushing operation of the packaging container 10 is more easily performed.

  For this reason, the packaging container 10 can be easily crushed even with a small force by the dent 14 formed of the broken line portion 14a and the contact surface 14b.

As a result, the bottom surface 11 begins to sunk into the lower portion of the side wall 12 and the packaging container 10 starts to be reduced in volume. If force is further applied to the flange portion 15, stress concentrates on the ribs or the bent surface 13, and this causes the lower portion of the side wall 12 (small portion 12 b) to become the upper portion of the side wall (large portion 12 a) together with the bottom surface 11. It sinks inside. If the lower part of the side wall 12 is completely recessed into the upper part, the volume of the packaging container 10 is about half that before crushing, and the volume reduction is completed.

  Here, even if the hand is released from the flange portion 15, the left and right portions of each recess 14 are about to spread in the upper portion of the side wall 12, so that the lower portion of the side wall 12 remains recessed in the upper portion. This state is maintained and does not return to the original state. This is because, as described above, in the lower portion and the bottom surface 11 of the side wall 12 that is recessed into the upper portion of the side wall 12, the recesses 14 formed in the boundary portion are caused by the elastic force of the synthetic resin sheet that is the raw material. Although it is going to spread, the force is applied in the direction in which the dent 14 is recessed into the upper portion together with the bottom surface 11 and the lower portion of the side wall 12, so that it is applied in the direction of maintaining the recessed state. This is because the lower part of 12 does not extend in the direction of pulling out from the upper part.

  Therefore, the packaging container 10 according to claim 1 has sufficient rigidity as a container, and the bottom surface 11 and its vicinity enter the inside of the upper part of the side wall 12 by the crushing force. Not only can it be easily crushed later by the power of a human hand, but after crushed, it does not return to its original state, but its volume remains small.

In order to solve the above-mentioned problem, the means taken by the invention according to claim 2 is about the crushable packaging container 10 according to claim 1,
“The upper side of the rib or bent surface 13 formed in the middle portion of the side wall 12 is the large portion 12a, and the lower side of the rib or bent surface 13 is the small portion 12b.”
It is.

  That is, in the crushable packaging container 10 according to the second aspect, as shown in FIGS. 1 to 5, the rib 12 formed on the middle portion of the side wall 12 or the side wall 12 on the upper side of the bent surface 13 is large. The side wall 12 that is the lower side of the rib or the bent surface 13 is the small portion 12b, and a plurality of the recesses 14 are provided between the small portion 12b and the bottom surface 11 so as to extend over the portion 12a.

  As described above, the side wall 12 is constituted by the large portion 12a on the upper side of the rib or the bent surface 13 and the small portion 12b on the lower side of the rib or the bent surface 13, so the large portion 12a. And the cross-sectional shape of each of the small portions 12b can be freely changed. In the best mode, the large portion 12a has a shape based on a square, and the small portion 12b has a substantially octagonal shape, but either the large portion 12a or the small portion 12b is circular. It is also possible to make it.

  Now, after this packaging container 10 is used, it is crushed. The operation is performed as follows, and each part operates as follows. In order to crush the packaging container 10, for example, by placing it on a desk and pressing the flange portion 15 on the upper side as much as possible with the palm of the hand, the side wall 12 is first applied by the force from the flange portion 15. Instead, a change appears on the bottom surface 11.

  That is, the bottom surface 11 is crushed by the reaction force from the desk, but since a recess 14 is formed between the bottom surface 11 and the side wall 12, the recess 14 starts to close from the left and right. Therefore, as in the case of the packaging container 10 according to the first aspect described above, the portions of the recesses 14 located on the left and right sides start to be crushed inward. This phenomenon in each of the recesses 14 becomes a “trigger” for “smashing”.

  If it does so, the bottom face 11 will sunk in the small-sized part 12b which comprises the side wall 12, and volume reduction of the said container 10 for packaging will begin. If force is further applied to the flange portion 15, stress concentrates on the rib or the bent surface 13 which is the boundary between the large portion 12 a and the small portion 12 b, and this causes the small portion 12 b itself to be brought together with the bottom surface 11. It sinks into the large portion 12a. If the small portion 12b is completely sunk into the large portion 12a, the volume of the packaging container 10 is about half that before crushing, and the volume reduction is completed.

  Here, even if the hand is released from the flange portion 15, the small portion 12b is kept in the large portion 12a and does not return to the original state. This is because, in the small portion 12b and the bottom surface 11 that are recessed into the large portion 12a, the dent 14 formed in the boundary portion tends to spread due to the elastic force of the synthetic resin sheet that is the raw material. However, the force acts in a direction in which the dent 14 is recessed in the large portion 12a together with the bottom surface 11 and the small portion 12b, and thus the force is applied in a direction to maintain the recessed portion. It is because it does not hang in the direction pulled out from the shape part 12a.

  Therefore, the packaging container 10 according to claim 2 is configured such that the side wall 12 is constituted by the large portion 12a continuous to the flange portion 15 and the small portion 12b continuous to the bottom surface 11 with the rib or the bent surface 13 as a boundary. As well as having sufficient rigidity, it is not only easily crushed by the power of human hands after use, but after crushed, it does not return to its original state and the volume is It is something that remains small.

In order to solve the above-mentioned problem, the means taken by the invention according to claim 3 is the crushable packaging container 10 according to claim 1 or 2,
“The rib or bent surface 13 located immediately above the recess 14 is a large step 13a having a width wider than that of the other”.
It is.

  That is, as shown in FIGS. 1 and 2, the packaging container 10 according to claim 3 includes ribs or bent surfaces 13 positioned immediately above the respective recesses 14 and other wide stepped portions 13a. It is a thing.

  Since the rib or bent surface 13 positioned immediately above each recess 14 is a large step portion 13a having a width wider than that of the other recesses, deformation due to a force when the packaging container 10 is crushed is performed in the large step portion 13a. It becomes easy and the deformation amount is large, and the progress of crushing is promoted in the large step portion 13a. This is because the rib or bent surface 13 other than the large step portion 13a has a high rigidity because it is narrower than the large step portion 13a, as shown in FIG. Although it does not occur, the large step portion 13a having an area larger than these is easily deformed, so that the change due to the crushing operation easily occurs.

  In other words, the presence of the large step portion 13a promotes the reduction of the recesses 14 and the penetration of the small portion 12b into the large portion 12a during crushing work. Even a person with little force such as a child can easily crush the packaging container 10.

  Therefore, the packaging container 10 according to the third aspect exhibits the same function as that of the first aspect, and can be easily crushed by the large step portion 13a even with a small force. .

As described above in detail, in the present invention,
“A packaging container 10 having a bottom surface 11, a side wall 12 rising from now on, and a flange portion 15 integrated on the outer periphery of the upper end of the side wall 12,
Between the side wall 12 and the bottom 11, provided with a plurality of indentations 14 that span these settings ribs or bent surface 13 at the top of each recess 14,
In addition, a bent line portion 14a that is inclined upward from the bottom surface 11 and rises linearly is formed at the center of each recess 14, and a flat contact surface 14b is formed on both sides of the bent line portion 14a. The recess 14 is configured by the contact surface 14b and the broken line portion 14a ".
There is a main feature in the structure, and by this, the bottom surface 11 and the vicinity thereof can enter the inside of the container 10 and can be easily crushed while maintaining the rigidity necessary for storing the product as it is. In addition, the packaging container 10 that can prevent the collapsed state from being easily restored can be provided.

In particular, the packaging container 10 according to the present invention can be easily crushed even with a small force by the dent 14 formed of the broken line portion 14a and the contact surface 14b.

  Next, the invention according to each claim configured as described above will be described with respect to the packaging container 10 which is the best mode shown in the drawings. The packaging container 10 is an invention according to each of the above claims. Is substantially included.

  FIG. 1 shows a plan view of a packaging container 10 according to the present invention. This packaging container 10 is integrated with a bottom surface 11, a side wall 12 rising from the bottom surface 11, and an upper end outer periphery of the side wall 12. The flange part 15 is provided, Comprising: The upper part of the flange part 15 is made into the fitting part 16 with which the cover body 20 is fitted. The packaging container 10 is integrally formed by vacuum or pressure forming on a synthetic resin sheet.

  As shown in FIG. 1, the packaging container 10 of the best mode is based on a square as the overall shape, and its bottom surface 11 has a little corner portion of the four sides of the square. It consists of a raised bottom portion 11b which is a cut octagon and a peripheral portion of the raised bottom portion 11b. As shown in FIG. 1, the raised bottom portion 11b is formed with folded grooves 11a extending radially from the center of the bottom surface 11 to the raised bottom portion 11b. These folded grooves 11a are, for example, protrusions on the mold side. Is molded by. In addition, the inner side of the large step portion 13a described later is parallel to each side located at the corner of the raised bottom portion 11b.

  Each raised bottom portion 11b formed on the bottom surface 11 is for increasing the rigidity of the bottom surface 11 itself, and also for concentrating stress generated on the bottom surface 11 on the side of a dent 14 described later. When crushing the packaging container 10, the crushing can be efficiently performed. That is, each folding groove 11a is not necessarily required in the present invention, but can be crushed more effectively by these.

  The side wall 12 rises from the peripheral edge of the bottom surface 11 as described above. As shown in FIGS. 2 and 5, a rib or a bent surface 13 is formed at an intermediate portion of the side wall 12. As shown in FIG. 5, the rib or the bent surface 13 serves as a boundary line so that the upper side wall 12 is a large portion 12a and the lower side wall 12 is a small portion 12b. . In other words, the presence of the rib or the bent surface 13 divides the side wall 12 into a large portion 12a and a small portion 12b that enters the large portion 12a.

  As shown in FIGS. 1 and 2, a portion of the rib or bent surface 13 that faces a later-described dent 14 is a large step portion 13 a. That is, the large step portion 13a is easy to generate deformation due to the force when the packaging container 10 is crushed, and increases the amount of deformation. It is something to promote. In other words, the rib or bent surface 13 other than the large step portion 13a has a high rigidity because it is narrower than the large step portion 13a as shown in FIG. Although it does not occur, the large step portion 13a having an area larger than these is easily deformed, so that the change due to the crushing operation easily occurs.

  And in the container 10 for packaging which concerns on this invention, as shown in FIG.1 and FIG.2 in the lower part of the side wall 12, ie, a part or all between the small-sized part 12b, and the bottom face 11 mentioned above, A recess 14 is provided across these. As shown in FIG. 2, the recess 14 of the best mode is formed with a broken line portion 14a rising from the bottom surface 11 at the center, and a flat surface on both sides of the bent line portion 14a. The contact surface 14b is formed and constituted by these.

  In addition, in the packaging container 10 of the best mode, a knob portion 15 a as shown in FIG. 1 is formed at the corner portion of the flange portion 15. In addition, since the packaging container 10 is to be fitted with a lid 20 to be described later, as shown in FIG. 2, the fitting part 24 on the lid 20 side has a fitting part 24 on the lower side of the flange part 15. The fitting portion 16 is to be fitted. In addition, this packaging container 10 is packaged by stacking a large number of these after manufacturing, but blocking at that time (a state where they overlap each other and it is difficult to peel off one sheet) occurs. As shown in FIGS. 1 and 8, anti-blocking protrusions 17 for preventing this are formed at appropriate positions.

  The lid 20 is formed from a synthetic resin sheet in the same manner as the packaging container 10 described above. As shown in FIGS. 9 and 10, the lid 20 is formed on the flange 21 and on the lower side of the flange 21. The fitting part 24 fitted to the fitting part 16 formed on the flange part 15 on the packaging container 10 side, the side wall 21, and the canopy 23 covering the entire storage part of the packaging container 10. It has become.

  The lid 20 shown in this figure has a Braille protrusion 21b formed on a knob portion 21a integrated with the flange portion 21 so that even a blind person can easily use it. In the illustrated lid 20, Braille protrusions 21 b are formed at all four corners, but the Braille protrusions 21 b may be formed at an appropriate position and in an appropriate number.

It is a top view of the packaging container which concerns on this invention. It is the elements on larger scale of the packaging container seen from the outer lower side of one corner part. It is a partial expanded sectional view which shows three examples (i)-(iii) about a rib or a bending surface. It is a partial expanded sectional view which shows three other examples of (i)-(c) about a rib or a bending surface. It is the front view which made the right half of the packaging container the end surface. It is the elements on larger scale which expanded and showed the circumference | surroundings of the dent of the packaging container. It is the elements on larger scale of the corner part centering on the dent of the packaging container. It is a partial expanded sectional view showing a state when a plurality of the packaging containers are stacked. It is a top view of the cover body fitted by the packaging container. It is a longitudinal cross-sectional view of the cover body. It is a perspective view which shows the prior art. It is a perspective view which shows another conventional technique.

DESCRIPTION OF SYMBOLS 10 Packaging container 11 Bottom surface 11a Folding groove 11b Raised bottom part 12 Side wall 12a Large part 12b Small part 13 Rib or bent surface 13a Large step part 14 Recess 14a Folding line part 14b Contact surface 15 Flange part 15a Knob part 16 Fitting part 17 Blocking prevention projection 20 Lid 21 Flange 21a Knob 21b Braille projection 22 Side wall 23 Canopy 24 Fitting

Claims (3)

A packaging container comprising a bottom surface, a side wall rising from now on, and a flange portion integrated with the outer periphery of the upper end of the side wall,
Between the bottom surface and the side wall, provided with a recess of a plurality spanning these settings ribs or bent surface at the top of each recess,
In the center of each of the recesses, a bent line portion that is inclined upward from the bottom surface and rises linearly is formed, and on both sides of the bent line portion, flat contact surfaces are formed, and these contact surfaces and The collapsible packaging container , wherein the dent is constituted by the broken line portion .
Item 4. A crushable packaging container according to any one of Items 3 to 4.   The collapsible packaging container according to claim 1, wherein an upper side of a rib or a bent surface formed in an intermediate portion of the side wall is a large portion, and a lower side of the rib or the bent surface is a small portion. .   The collapsible packaging container according to claim 1 or 2, wherein the rib or the bent surface located immediately above the recess is a large step having a width wider than that of the other.

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