JP2010285155A - Deep type container made of resin sheet - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a deep type container made of a resin sheet in which an article to be packaged can be easily taken out at the beginning while a complete modification of a mold is avoided by keeping the rough shape of the whole container at a conventional rough shape without increasing roughly the amount of the raw material to be used. <P>SOLUTION: The deep type container has a depth d enough for storing the whole in the height direction of the article to be packaged and a plane width. The peripheral wall part 3 of the container is equipped with a deformable part 4 being deformable in the vertical direction either in a necessary circumferential range in, or covering the whole periphery, at an appropriate height position in the depth direction. The deformable part 4 can be descendingly deformed in the vertical direction by pressing either a specified position of an opening edge 5 or an arbitrary circumferential position. By placing this descendingly deformed deforming part 4', an upper peripheral wall part 3a upside from the deformable part 4 and a lower peripheral wall part 3b lower side from the deformable part 4 are overlapped in and out circumferentially. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a deep container formed by deep-molding a synthetic resin sheet material. For example, in the case of a chicken egg packaging container, a resin sheet container formed to a depth that allows the whole egg to be fully contained in the container with the egg in an upright position, white peach, ripe mango, ripe melon, etc. The present invention relates to a resin sheet deep container suitable for use for packaging, and further to a resin sheet deep container suitable for use as a packaging container for short cakes, cream puffs and the like.

  At present, for example, most of the containers generally known as eggs packaging containers are containers formed by bulging a sheet material made of polyethylene terephthalate (PET) resin by heat forming means such as compressed air forming means or vacuum forming means. When roughly classified, a container body provided with an egg-containing recess that individually accommodates the lower half of the egg and a lid covering the upper part thereof are integrally formed via a bent hinge (patent There is also a document 1), but a container (non-patent document 1) in which the container body is formed to a depth sufficient to hold the whole egg in a standing posture is known as a container of a different form (Non-Patent Document 1). Yes. The container for egg wrapping targeted by the present invention is intended for a container formed to a depth sufficient to completely accommodate the latter egg.

  In this latter egg packaging container, the opening edge of the container is often provided with a flange surface protruding toward the outer peripheral direction, and a sealing sheet or a sealing film is thermally bonded to the flange surface. It is used by pressure-sensitive bonding or by forming and fitting a shallow dish-shaped lid separately. This is also generally known.

JP 2007-50919 A

No. 7-34849

  Therefore, since such containers are disposed of after the packaged items are taken out, cost reduction is required as much as possible, and the materials used are minimized. It is formed in the minimum necessary size corresponding to the package to be accommodated in the container. For example, in the egg packaging container, the outer shape of the container is formed to a minimum size necessary to accommodate a predetermined number of eggs in the container. This not only saves materials, but also reduces the packaging space for the transportation of goods to the market, minimizes the exhibition space on the market, and is larger than necessary. This is because the stability of the accommodation posture of the packaged item is lacking. The chicken egg packaging container is consistent with the necessity of minimizing rattling of individual eggs that cause broken eggs.

  On the other hand, in the case of a deep container sized so as to fit the size of the packaged item, the entire egg is completely contained with an outer shape adapted to the size of the egg to be stored. In such a deep container, when a packaged object, that is, a chicken egg here is first taken out, there is a problem that the gap between the eggs or between the egg and the container peripheral wall is small and difficult to take out. It came to confirm.

  Therefore, the present invention, from such a viewpoint, without increasing the material used for the container that has a direct impact on the product cost, the entire form of the mold is maintained by maintaining the same form as the conventional form. It is an object of the present invention to provide a deep container made of a resin sheet that can solve the problem that a gap is small and difficult to take out even at the time of first taking out an article to be packaged.

  The first configuration of the resin sheet deep container according to the present invention taken to achieve the object will be described using the reference numerals used in the description of the embodiment to accommodate the entire packaged object. Is a bulging molded container made of a deep synthetic resin sheet having a depth d and a width sufficient for the peripheral wall portion 3 and is deformable so that the peripheral wall portion 3 can be deformed in the vertical direction at an appropriate height in the depth direction. The deformable portion 4 is lowered and deformed by pressurizing the opening edge 5, and the upper peripheral wall portion 3a on the upper side from the deformable portion 4 and the deformed portion are sandwiched by the lowered deformed portion 4 ′. The lower peripheral wall portion 3b on the lower side from the possible portion 4 is superposed inside and outside in the circumferential direction.

  Further, the second configuration of the resin sheet deep container is a deep synthetic resin sheet bulging molded container having a depth d and a width sufficient to accommodate the entire packaged object. The peripheral wall portion 3 includes a deformable portion 4 that can be deformed in the vertical direction at an appropriate height in the depth direction over the entire circumference, and the deformable portion 4 pressurizes the opening edge 5. The upper peripheral wall portion 3a above the deformable portion 4 and the lower peripheral wall portion 3b below the deformable portion 4 with the deformed portion 4 'lowered and deformed between the lower deformable portion 4 and the lower peripheral wall portion 3b. Is polymerized in the circumferential direction inside and outside.

  Moreover, in implementing these resin sheet deep containers, as described in claim 3, the opening edge 5 of the container is directed toward the outer peripheral direction for attaching a sealing sheet or a sealing film. It can be implemented as having a protruding flange surface 6.

  In the first configuration of the resin sheet deep container according to the present invention, as the structure of the peripheral wall portion of the container, at an appropriate height location in a range continuous with at least a required range in the circumferential direction. A deformable portion configured to be deformed in the vertical direction is provided, the deformable portion is lowered and deformed by pressurization to the opening edge, and the upper peripheral wall on the upper side from the deformable portion with the lowered deformed portion interposed Since the portion and the lower peripheral wall portion below the deformable portion are polymerized inside and outside in the circumferential direction, there is almost no increase in the amount of material used for the container that directly affects the product cost, and the overall container The shape is maintained in the conventional shape, so that the entire mold can be prevented from being completely repaired. By increasing the space, it was led to obtain a container that can be easily taken out without damaging the articles to be packaged.

  Moreover, in the thing of the said 2nd structure of the deep container made from a resin sheet said to this invention, as a structure of the surrounding wall part of a container, it extends in the depth direction over the circumferential direction perimeter of the surrounding wall part of a container. Provide a deformable part that can be deformed in the vertical direction at an appropriate height, and the deformable part can be lowered and deformed by applying pressure to any part of the opening edge, and sandwich the deformed part that has been lowered and deformed. Since the upper peripheral wall portion on the upper side from the deformable portion and the lower peripheral wall portion on the lower side from the deformable portion are configured to overlap inside and outside in the circumferential direction, the amount of material used in the container that directly influences the product cost is reduced. Without increasing, the general shape of the entire container is maintained at the same shape as before, and the entire opening of the container is pressed, and any part of the opening edge of the container is pressurized at the first removal of the package. Only by simple pressurization operation, packaged It is possible to increase the extraction space is had led to a container which can be easily taken out without damaging the objects to be packaged is obtained.

  If it mentions continuously, in the deep container made from a resin sheet of Claim 3, it will be provided with the flange surface which protrudes toward the outer peripheral direction of the sheet | seat for sealing and the film for sealing on the opening edge of a container. Therefore, it is possible to expect an advantage that the sealing sheet and the sealing film can be easily hermetically sealed by using a conventionally known heat bonding means and pressure bonding means by using the flange surface. .

The perspective view of the container of 1st Example. The top view of the container. The cut side view along the AA line of FIG. 2 of the container. The expanded end view which shows the deformable part of the container. The perspective view which shows the deformation | transformation state of the container. The side view which shows the deformation | transformation state of the container. The expanded end view which shows the deformation | transformation state of the deformable part of the container. The top view of the container of 2nd Example. The cut side view along the BB line of FIG. 8 of the container. The expanded end view which shows the deformable part of the container. The expanded end view which shows the deformation | transformation state of the deformable part of the container. The top view of the container of 3rd Example. The cutting | disconnection side view along CC line of FIG. 12 of the container. The expanded end view which shows the deformable part of the container. The expanded end view which shows the deformation | transformation state of the deformable part of the container. The top view of the container of 4th Example. The front view of the container. The front view which shows the deformation | transformation state of the container.

  Next, embodiments of the resin sheet deep container of the present invention will be specifically described with reference to the drawings. The containers described below are not particularly limited in material, but most of them use the above-mentioned PET resin sheet material and swell by heat forming means such as well-known pressure forming means and vacuum forming means. It is a molded container. In the following examples, a chicken egg wrapping container that is accommodated in a container and provided for distribution will be described.

  As shown in the plan view of FIG. 2, the egg packaging container 10 shown in the first embodiment is formed in a substantially square shape in plan view, Four concave portions for individually accommodating eggs as 1 are formed. The structure of the embodiment shown below can be implemented in a container for 6 eggs, a container for 8 eggs, a container for 10 eggs, and the like by changing the shape in plan view and the number of concave parts for individually storing eggs.

  As is apparent from FIGS. 1 and 3, the egg-wrapping container 10 has a substantially rectangular tube shape with the upper part of the container opened, and a sealing sheet protruding from the opening edge 5 toward the outer peripheral direction. Further, a flange surface 6 for attaching a sealing film is formed. Moreover, as shown in FIG. 3, the depth d from the opening edge 5 to the bottom wall 2 is formed to a depth that allows the eggs e housed in the container 10 to fit completely.

  Thus, the container 10 is provided with a deformable portion 4 that has a U-shaped rib shape and allows downward deformation at a substantially middle height position in the vertical direction, that is, the depth direction of the peripheral wall portion 3. It is formed so as to be connected to the entire circumference. The deformable portion 4 having a U-shaped cross section can maintain the U-shape when the flange surface 6 is pushed downward by pressing downward on the opening edge 5, more specifically, when the flange surface 6 is pushed downward. Instead, as the lower end portion of the upper peripheral wall 3a connected to the outside of the U-shaped rib in a plan view moves downward, it is deformed into a downward inclined wall 4 ′ as shown in FIG. The groove width of the U-shaped rib described in this embodiment is approximately 3 mm, and the groove depth is approximately 3 mm. The width and depth are not limited to these values, and the shape of the container varies depending on the type of the object to be accommodated therein, and also varies depending on the degree of adhesion between the opening at the top of the container and the object to be accommodated.

  In other words, as shown in an enlarged view in FIG. 4, the outer portion 4a of the U-shaped deformable portion 4 is moved downward by the upper peripheral wall 3a connected to the outer portion 4a, so that the inner portion 4b of the U-shaped portion. As shown in FIG. 7, it changes into a downwardly inclined wall 4 ′. In this manner, the upper peripheral wall portion 3a above the deformable portion 4 and the lower peripheral wall portion 3b below the deformable portion 4 in the circumferential direction with the downward inclined wall 4 ′ interposed therebetween. It will be overlapped so as to form three layers.

  When the deformable portion 4 is lowered and deformed in this way, the flange surface 6 is lowered downward, and the egg e housed in the container protrudes from the flange surface 6 as shown in FIG. Thus, since there is a space around the upper part of the egg, it is easy to take out the egg e without inserting a fingertip into the container.

  8 to 11 are diagrams showing a second embodiment. 8 is a plan view corresponding to FIG. 2, FIG. 9 is a view corresponding to FIG. 3, and is a side view cut along the line BB shown in FIG. 8, and FIGS. The enlarged end face of the possible part 4 and the enlarged end face shape after deformation of the same part are shown.

  Thus, in the container 10 shown in the embodiment, the shape of the deformable portion 4 formed at a substantially middle height position in the vertical direction of the peripheral wall portion 3 is U-shaped in cross section as seen in FIGS. It is made into the shape which formed the groove | channel of the small width recessed in 2 in a W shape. The deformable portion 4 is also formed so as to be continuous with the entire circumference of the peripheral wall portion 3 as in the case of the first embodiment.

  The groove width and depth of the U-shaped rib described in this embodiment of the deformable portion 4 formed by connecting two U-shaped cross sections are each set to approximately 1.5 mm. Similarly to the case of the first embodiment, the deformable portion 4 is also pushed downward as shown in FIG. 11 as the lower end portion of the upper peripheral wall 3a is moved downward by pushing down the flange surface 6 at the upper end of the container. It is as a structure which deform | transforms into the inclined wall 4 '.

  12 to 15 are diagrams showing a third embodiment. The container 10 shown in the embodiment is substantially in the middle in the vertical direction of the peripheral wall portion 3 as shown in the plan view of FIG. 12 and the side view showing the state cut along the line CC in FIG. In the height of the part, with a suitable interval in two places in the vertical direction, in the case of the egg container shown in the example, with a spacing of about 2.5 to 5 mm, the thin part or step part that can be refracted Alternatively, the refracting portions 4c and 4d as shown in the figure are formed, and the peripheral wall portion 4 between them is formed as a deformable portion 4 as an outwardly extending slope having a slightly larger diameter on the upper side. The deformable portion 4 is also formed so as to be continuous with the entire circumference of the peripheral wall portion 3 as in the case of the first embodiment.

  The deformable portion 4 is normally formed in an upwardly-sloped shape as shown in an enlarged view in FIG. 14, but as in the case of the first embodiment, the flange surface 6 at the upper end of the container is formed. By pushing down, the upper refracting part 4c moves over the outer peripheral part of the lower refracting part 4d to the lower side thereof as the upper peripheral wall 3a continuing above the upper refracting part 4c moves downward. FIG. 15 shows a structure that is deformed into a sloped wall 4 ′ that spreads downward as shown in FIG.

  Further, FIGS. 16 to 18 are diagrams showing the fourth embodiment. The container 10 shown in the embodiment has a rectangular shape in a plan view of the container as in the above-described embodiments, and the selected corner portion c, in FIG. A required length portion of the peripheral wall portions 31 and 32 connected to both sides thereof, here, the length over the substantially entire width of the peripheral wall portions 31 and 32, and an appropriate height portion thereof, in this embodiment, as shown in FIG. A deformable portion 4 that is deformable in the vertical direction and has a U-shaped cross section similar to that of the first embodiment is formed at a height portion that is approximately a half of the depth.

  However, the deformable portion 4 having a U-shaped cross section has the corner portion c formed at the deepest position and is moved away from the corner portion c, as shown in FIG. In other words, the groove depth is formed so as to become gradually shallower toward the right in FIG. In this way, when the opening edge 5 of the corner portion c as the deformable portion 4 is pressed downward, the corner portion c and the peripheral wall portion 31 connected to the front side thereof as shown in FIG. The left peripheral wall portion 32 that cannot be seen on the drawing is lowered and deformed in an inclined manner. Although not shown repeatedly, the lowered and deformed portion is also lowered from the deformable portion 4 and the upper peripheral wall portion above the deformable portion 4 with the lowered and deformed portion sandwiched between the lowered deformed portions as in the above embodiments. The lower peripheral wall portion on the side is superposed inside and outside in the circumferential direction, and the upper peripheral wall portion, the upper opening 5 and the flange portion 6 sink, and the internal egg e can be easily taken out.

  The container 10 shown in the fourth embodiment is not formed in such a manner that the deformable portion 4 is connected to the entire circumference of the peripheral wall portion 3 of the container, but a specific portion, that is, a specific corner in the embodiment. This is different from the other embodiments in that the deformable portion 4 is formed only in the required length portions of the portion c and the peripheral wall portions 31 and 32 connected to both sides thereof. Other points are the same as those described in the above embodiments.

  Although the embodiments considered to be representative of the present invention have been described above, in each of these embodiments, the plan view shape of the container 10 is shown as a rectangular shape for ease of explanation and convenience of drawing. The shape in plan view may be triangular, circular, oval or elliptical, and can be an optimal shape according to the shape of the contents to be stored in the container. It is not limited to only those.

  The deep container made of resin sheet according to the present invention is a container that does not damage the package body by making it a necessary and sufficient size according to the size of the package body and making the container with a small backlash. However, it is expected that the packaged items can be easily taken out, so that it will meet market demands and will be accepted and popularized as soon as it is released.

DESCRIPTION OF SYMBOLS 1 Space | interval control part 2 Bottom wall 3 Peripheral wall part 3a Upper peripheral wall part 3b Lower peripheral wall part 4 Deformable part 4 'Deformation part 5 Opening edge 6 Flange surface 10 Container c Specific part d Depth

Claims (3)

A bulging molded container made of a deep synthetic resin sheet having a depth (d) and a width sufficient to accommodate the entire packaged article,
The peripheral wall portion (3) includes a deformable portion (4) that can be deformed in the vertical direction at an appropriate height in the depth direction,
The deformable portion (4) is lowered and deformed by pressurization to the opening edge (5), and the upper peripheral wall portion on the upper side from the deformable portion (4) is sandwiched between the lowered deformed portion (4 ′). A deep container made of a resin sheet having a structure in which 3a) and a lower peripheral wall portion (3b) on the lower side from the deformable portion (4) are polymerized in the circumferential direction. A bulging molded container made of a deep synthetic resin sheet having a depth (d) and a width sufficient to accommodate the entire packaged article,
The peripheral wall portion (3) includes a deformable portion (4) that can be deformed in the vertical direction at an appropriate height in the depth direction over the entire circumference in the circumferential direction,
The deformable portion (4) is lowered and deformed at any location in the circumferential direction by applying pressure to the opening edge (5), and the deformable portion (4 ′) is sandwiched between the deformable portion (4) and the deformable portion (4). A deep container made of a resin sheet having a structure in which an upper upper peripheral wall portion (3a) and a lower lower peripheral wall portion (3b) from the deformable portion (4) are polymerized inside and outside in the circumferential direction. The deep container made of a resin sheet according to claim 1 or 2, wherein the opening edge (5) of the container is provided with a flange surface (6) projecting toward the outer peripheral direction for attaching a sealing sheet or a sealing film. .

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