JP2007186260A - Plastic container - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a plastic container capable of preventing an acute edge from being formed at a horizontal flange at the upper end of a separated accommodation part. <P>SOLUTION: A star-shaped center opening 7 of a container body 2 includes five curved contours 70, and five straight parts 71 located between two adjacent curved contours 70, 70. Each straight part 71 extends in a direction orthogonal to perforations 13. Inner ends of the five perforations 13 of the container body 2 are designed to intersect a center portion in the longitudinal direction of each straight part 71. Each straight part 71 extends by a distance α from a part in which the design perforation 13 is placed, in other words, an intermediate portion of each straight part 71. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a plastic container, and more particularly, to a container provided with a plurality of storage portions for individually storing contents, each of which is sealed with a single film material. This type of plastic container can, for example, separate one storage part and take out one content by peeling off the film material sealing the storage part. It can peel in the state integrated as a whole, and can open all the accommodating parts contained in a plastic container collectively.

  Patent Document 1 discloses a plastic container in which a plurality of housing portions opened upward are sealed with a single film material as a container for housing a plurality of film materials for endoscopic photography. The container body of the plastic container has an upper horizontal flange that connects the plurality of receiving portions to each other, a film material is thermally welded to the upper horizontal flange, and a perforation is provided in the upper horizontal flange and the film material. Thus, by cutting this perforation, it is possible to separate and use any number of accommodating parts including one.

  FIG. 20 shows a plastic container 100 described in Patent Document 1. As described above, in the plastic container 100, the container main body 101 includes a plurality of accommodating portions 102, and the plurality of accommodating portions 102 are connected to each other by the upper end horizontal flange 103. A single film material 104 is heat-welded to the upper horizontal flange 103 so as to be peelable.

  The film material 104 and the upper horizontal flange 103 are formed with first and second perforations 105 and 106 at positions substantially overlapping each other, and the first and second perforations 105 and 106 are cut. Thus, the arbitrary accommodating portion 102 can be separated.

  As can be seen from FIG. 20, the outer edge of the upper horizontal flange 103 has a recess 108 between the adjacent accommodating portions 102, 102, and a star-shaped opening 109 is formed in the central portion of the upper horizontal flange 103. Is formed. Similar to the corner portion 103a of the upper horizontal flange 103, the recess 108 and the star-shaped central opening 109 are formed by the intersection of two curved contours corresponding to the corner portions of the respective receiving portions 102 related thereto. Thus, when the housing portion 102 is separated, all corner portions of the upper horizontal flange 103 of the separated housing portion 102 are designed to have a curved outer contour. This configuration is not unique to Patent Document 1, and is a conventional general configuration.

JP-A-8-194291

  FIGS. 21 and 22 are views for explaining the conventional problems relating to the container body 101 having the upper end horizontal flange 103 with the perforation 106. As described above, the upper horizontal flange 103 is provided with the perforation 106 in relation to the outer edge recess 108 and the central opening 109. When this installation location is offset from the design line 110 by ΔL, the perforation 106 is provided. When cut along the eye 106, an acute edge 111 is formed as shown by an arrow E in FIG. In FIGS. 21 and 22, although illustrated in relation to the outer edge recess 108 of the upper horizontal flange 103, this problem also applies to the central opening 109.

  An object of the present invention is to separate a container on the premise of a plastic container in which a plurality of containers are connected to each other by an upper horizontal flange and an arbitrary container can be separated from a container body by cutting a perforation. It is an object of the present invention to provide a plastic container capable of preventing an acute edge from being formed on the horizontal flange at the upper end of the separated housing.

The above technical problem is, according to the first aspect of the present invention,
A plurality of accommodating portions opened above the container body are connected to each other by an upper end horizontal flange, and a recess where two curved outer contours intersect is formed at the outer edge between the accommodating portions in the upper end horizontal flange, In a plastic container that can be separated individually by cutting along perforations in contact with the recess,
The outer edge recess of the upper end horizontal flange includes two curved outer contours and a first straight portion connecting the two curved outer contours, and the perforation is substantially vertical to the first straight portion. This is accomplished by providing a plastic container characterized by contact.

  That is, according to the present invention, the first straight portion is provided in the outer edge recess of the upper end horizontal flange, and the perforation is designed to contact the first straight portion vertically. Even if it is provided offset from this line, the cutting edge at the part can be maintained at approximately 90 degrees, and an acute edge can be prevented from being formed.

  When the container body further has a star opening at the central portion of the upper horizontal flange, the star central opening includes two curved contours adjacent to each other and a second straight portion connecting the two curved contours. It is good to design so that the perforation may contact | connect perpendicularly to this 2nd linear part. According to this, as in the case of the outer edge recess of the top horizontal flange, even if the perforation is offset from the design line, the cutting edge at the portion of the star central opening can maintain approximately 90 degrees. It is possible to prevent sharp edges from being formed.

The above technical problem is, according to the second aspect of the present invention,
A plurality of receiving portions opened above the container body are connected to each other by an upper end horizontal flange, and an opening is provided in a central portion of the upper end horizontal flange, and is provided between the center opening and an outer edge of the upper end horizontal flange. In a plastic container that can be separated individually by cutting along perforations,
This is achieved by providing a plastic container having a second straight portion in contact with the perforation substantially perpendicularly.

  According to the second aspect of the invention, the container main body relates to the opening of the central portion of the upper end horizontal flange, and since the central opening has the second straight line portion that is substantially perpendicular to the perforation, the perforation Even if offset is provided from the design line, the cutting edge at the portion of the star-shaped central opening can be maintained at approximately 90 degrees, and an acute edge can be prevented from being formed. I can do it.

  Other objects and operational effects of the present invention will become apparent from the following description of preferred applications.

  Before describing embodiments of the present invention, preferred applications to which the present invention can be applied will be described below with reference to the accompanying drawings.

First application example of container body (FIGS. 1 to 4) :

  Reference numeral 1 shown in FIG. 1 indicates a plastic container according to a first application example of the present invention, and the plastic container 1 is composed of a container body 2 of a plastic molded product and a single laminated film material 3.

  FIG. 2 is a perspective view of the container body 2 with the laminate film material 3 removed. The container body 2 has five bottomed receiving portions 4 that are open upward, and the five receiving portions 4 are formed in a substantially triangular shape in cross section, and each of the receiving portions 4 has a substantially similar shape. A solid luo 5 formed in a substantially triangular cross section is accommodated. The solid roux 5 is curry in this application example, but may instead be a stew, or may be a liquid roux or a powder roux. The solid roux 5 is preferably an amount corresponding to a predetermined number of people, for example, one serving or two servings. In this application example, the amount is adjusted to the serving for one serving.

  Based on FIG. 2, the structure of the container main body 2 is demonstrated in detail. The container main body 2 has a substantially circular shape that is large enough to be placed on the palm of the hand when seen in a plan view. An upper end horizontal flange 6 is provided around the upper end opening of each housing portion 4, and the housing portions 4 are connected to each other by the upper end horizontal flange 6.

  That is, the upper end horizontal flange 6 includes an outer peripheral flange portion 6a extending along the outer periphery of the container main body 2 at the upper end of the container main body 2, an inner peripheral flange portion 6b located on the inner periphery, an outer peripheral flange portion 6a, and an inner peripheral flange portion. 6b and a connecting flange portion 6c positioned between the adjacent accommodating portions 4 and 4. The inner peripheral flange portion 6b preferably has an opening 7 at the center thereof, and the center opening 7 is preferably star-shaped. On the other hand, the outer edge of the outer peripheral flange portion 6a is preferably provided with a flange outer edge recess 8 in which the adjacent accommodating portions 4, 4 are recessed in an arch shape toward the outside.

  The upper end horizontal flange 6 is preferably formed with a sealing protrusion 9 protruding upward. The sealing protrusion 9 continuously extends in a substantially triangular shape along the substantially triangular upper end opening of each accommodating portion 4, and the laminate film material 10 is heat-welded thereon.

  As can be seen from FIG. 1, the laminate film material 10 has a substantially circular shape when viewed from above, and only the laminate film material 10 exists in the flange outer edge recess 8 and the star-shaped central opening 7 described above. is doing. As can be best understood from FIG. 3, the laminate film material 10 has an outer dimension that protrudes outward by a slight dimension L from the outer peripheral edge of the outer peripheral flange portion 6 a of the container body 2.

Laminate film material 10, the oxygen in the substrate, H 2 _O barrier layer good of a laminated film material, for example, an aluminum (AL) layer as the barrier layer, a polyethylene terephthalate as the substrate layer (PET) And / or a nylon (NY) layer. Specifically, in this application example, it is composed of a laminated film material of PET layer / AL layer / NY layer / polyethylene (PE) layer. The thickness of the laminate film material 10 used in this application example was about 90 μm, but practically any laminate film material of 60 to 100 μm can be used. As can be seen from FIG. 1, the laminate film material 10 is preferably provided with a lip 11.

  Referring to FIG. 3, when a sealing protrusion 9 is preferably provided on the upper horizontal flange 6 of the container body 2, the width W of the sealing protrusion 9 is preferably 0.5 to 1.5 mm. The width W of the sealing protrusion 9 in the application example is about 0.7 mm. As described above, the laminate film material 10 is heat-welded on the sealing protrusion 9. The sealing strength is about 4 to 20 N when the width W of the sealing protrusion 9 is converted to 15 mm. Is preferred. In this application example, the average seal strength is 7 to 15 N when the width W of the seal protrusion 9 is converted to 15 mm. If the seal strength is lower than 4N, there is a possibility of peeling at the physical distribution stage. On the other hand, if the seal strength is higher than 20N, the openability may be hindered.

  After putting the above-mentioned solid roux 5 into each accommodating part 4 of the container main body 2, the container main body 2 will be in a sealing state by heat-welding the laminate film material 10. FIG.

  The substantially perforated laminate film material 3 is provided with a first perforation 12 as best seen in FIG. 1, and the first perforation 12 divides the substantially circular laminate film material 10 into five equal parts. It is put in. Similarly, as can best be seen from FIG. 2, the container body 2 also has five second perforations 13 in its upper horizontal flange 6, and each second perforation 13 is connected to a connecting flange. One end reaches the outer edge recess 8 through the intermediate portion in the width direction of the portion 6 c and in the longitudinal direction of the connecting flange portion 6 c, and the other end reaches the star-shaped central opening 7. The second perforation 13 of the container body 2 and the first perforation 12 of the laminate film material 3 are provided at substantially the same location. After the laminate film material 3 is thermally welded to the container body 2, the first and second perforations 12 and 13 may be formed in one step. Instead, the laminate film material 3 and the container body 2 are formed. After the first and second perforations 12 and 13 are formed on each of them, the laminate film material 3 may be thermally welded to the container body 2 so that they are overlapped with each other.

  When the consumer cooks using the solid roux 5 contained in the plastic container 1, for example, if one person's curry is to be made, the arbitrary one containing portion 4 (FIG. 4) is attached to the first and second containers. Separate along the perforations 12 and 13, and then peel off the outer edge of the substantially triangular laminate film material 10 that seals the separated accommodating portion 4, typically an optional corner portion. By doing so, the solid roux 5 contained therein can be taken out.

  In order to peel the laminate film material 10, it corresponds to a portion projecting outward from the upper horizontal flange 6 of one separated housing portion 4, typically three corner portions of the housing portion 4 having a substantially triangular shape in plan view. The laminate film material 10 can be peeled by picking and pulling up any one of the three pieces 10a. When used in such a manner, the other four solid roux 5 can not only maintain an unopened state, but are partly missing, but the remaining four accommodating portions 4 are connected to each other. It can be stored in the form of one container body 2.

  Referring to FIG. 3, preferably, each of the substantially triangular sealing ridges 9 formed on the upper end horizontal flange 6 is formed with a hook-shaped peeling assisting portion 9 a protruding outward at three corner portions thereof. Is preferred. As described above with reference to FIG. 4, when the one accommodating portion 4 is cut off by forming the peeling assisting portions 9 a at the three corner portions of each sealing protrusion 9, the laminate film material is used. It becomes easy to pick up and pull up the piece 10a of the arbitrary corner portion of 10 and peel the laminate film material 10.

  When all of the five solid luws 5 contained in the plastic container 1 are used, that is, when all of the laminated film material 3 is removed from the container body 2 in a lump, when the lip 11 is picked and pulled up, the laminate Needless to say, it is preferable that the film material 10 is peeled off from the container body 2 in a state of being integrated as a whole without being cut by the first perforation 12.

  Referring to FIG. 3 again, in relation to the arrangement position of the lip 11, the peeling assisting portion 9 a at the portion indicated by the arrow A in FIG. 3 does not cause the laminate film material 10 to be torn at the first perforation 12. Helps to peel in a totally integrated state.

  This point will be described in detail. When the lip 11 is pulled up, peeling of the laminate film material 3 starts from the sealing protrusion 9 around the accommodating portion 4 adjacent to the lip 11, and the sewing machine adjacent to the sealing protrusion 9 Cross the eyes 12 and meet the seal ridges 9, 9 on both sides. This state is indicated by a one-dot chain line X in FIG. With respect to the seal ridges 9 adjacent to both sides of the seal ridge 9 that starts to peel first when the lip 11 is pulled up, the corner portions A and A to which the force for peeling the laminate film material 3 is first applied are the peel assisting portions 9a. The peeling assisting portion 9a can promote the peeling of the laminated film material 3, so that the laminated film material 3 has a first perforation during the batch opening of the laminated film material 3. It is possible to suppress tearing at 12. Therefore, the laminate film material 3 can be removed from the container body 2 while suppressing the tear of the laminate film material 3 at the initial stage by tearing the lip 11 and pulling up the laminate film material 3. .

  In the first application example, preferably, the throat-shaped peeling assisting portion 9a is provided at the corners of all the sealing protrusions 9. However, the upper-side peeling assisting portion 9a adjacent to the star-shaped central opening 7 is formed in an arc shape. Alternatively, another modification is shown in FIG. The plastic container 1A as a modified example of FIG. 5 is in the relationship with the lip 11, and the sealing ridge 9 in which the laminate film material 3 starts to peel in the vicinity thereof, that is, the sealing ridge in the vicinity of the lip 11. Of the sealing protrusions 9 located on both sides of the perforation 9 and the perforation 12, only the corner portion A where the peeling force acts first when the lip 11 is pulled up by collective opening is provided with a hook-like peeling assisting portion 9a. The other corner portion of each sealing protrusion 9 is formed in a curved shape along the corner portion of the opening of the substantially triangular accommodating portion 4.

Second application example of container body (FIG. 6) :

  The container body 21 of the plastic container 20 of the second application example has a rectangular shape, specifically a substantially square shape, when viewed from above. In the description of the application examples after the second application example, the same reference numerals are assigned to substantially the same elements as those in the first application example, and the detailed description thereof is omitted.

  The container body 21 having a substantially square shape in plan view has four accommodating portions 4 having a substantially square cross section obtained by dividing the container body into four equal parts, and the sealing protrusions 9 around the accommodating portions 4 are also substantially square in plan view. . In the accommodating portion 4 having a substantially square shape in a plan view, the above-described solid roux 5 having a substantially similar shape is accommodated (in FIG. 6, illustration of the solid roux 5 is omitted for reasons of drawing). The laminate film material 3 that seals the container body 21 is substantially square and has a size that slightly protrudes outward from the outer peripheral edge of the upper end horizontal flange 6 of the container body 2 as in the first application example.

  The laminate film material 3 is provided with a lip 11 only at a position corresponding to one corner portion B of the substantially square container body 21, and the lip 11 is lifted in relation to the position of the lip 11 to laminate the laminate film material 3. When the first perforation 12 is first met, the corner portions A and A of the seal protrusion 9 that are first encountered after the first perforation 12 are preferably formed with a hook-shaped peeling assisting portion 9a. . As a result, when four solid luws (not shown) accommodated in the plastic container 20 are taken out from the container body 2, when the lip 11 is pulled up and the laminate film material 3 is peeled off, the laminate film material 3 is The laminate film material 3 can be removed from the container body 21 as a whole while suppressing tearing at the perforations 12.

  In addition, it is preferable to provide a peeling assisting portion 9a at a site that is next to the sealing protrusion 9 while the site indicated by the arrow C in FIG. In this way, with respect to the sealing ridges 9 where peeling is started one after another in a chain, a laminate assisting portion 9a is provided at the site where the peeling force acts at the beginning of the sealing ridge 9, whereby a laminate film By smoothing the initial peeling operation at the sealing protrusions 9 that are encountered one after another while the material 3 is being peeled off at once, the laminate film material 3 is the sewing machine while the entire laminate film material 3 is being opened. It is possible to effectively suppress tearing by the eyes 12.

  Referring again to FIG. 6, when the portion indicated by reference numeral B, that is, the lip 11 of the laminate film material 3 is pulled up and collectively opened, the corner portion B where the peeling force acts first is also provided with a hook-like peeling assisting portion. It is preferable to provide 9a. According to this, the initial peeling operation | movement by package opening of the laminate film material 3 can be made smooth.

  FIG. 7 shows a plastic container 20A according to a modification of the second application example. In the plastic container 20A of this modification, it is preferable that all of the corner portions of the four substantially square sealing protrusions 9 in the plan view formed around each of the four square-shaped accommodating portions 4 have a mouth-open shape. The peeling assisting portion 9a is provided, and the lips 11 are provided at all four corner portions of the substantially square laminated film material 3.

  According to this, not only the lip 11 of the four lips 11 can be lifted, but the above-described operational effects can be obtained, and as described in the first application example with reference to FIG. When the part 4 is separated by tearing the perforation 12 (13), even if the separation is started from any of the four corner parts of the separated accommodating part 4, the shed-like peeling related thereto The initial peeling operation at the time of batch opening of the laminated film material 3 can be made smooth by the assisting portion 9a. However, in this modified example 20A, since the four lips 11 associated with each of all the accommodating portions 4 are provided, the sealing protrusion 9 located at the center portion D of the container body 21 having a substantially square shape in plan view is provided. Instead of forming the cut-out peeling assisting portion 9a at the corner portion, it may remain in an arc shape as shown in FIG.

Third application example of container body (FIG. 8) :

  The plastic container 30 of the third application example has a rectangular shape, specifically, a substantially square shape when seen in a plan view, but the four accommodating portions 4 that are equally disposed therein have a circular cross section, The sealing protrusion 9 surrounding each accommodating portion 4 is also substantially circular. That is, the upper end horizontal flange 6 of the container body 31 has a substantially square outline.

  Each of the accommodating portions 4 having a circular cross section accommodates the above-described solid lua 5 having a substantially similar shape (substantially columnar shape) (in FIG. 8, illustration of the solid luu 5 is omitted for reasons of drawing). ). The laminate film material 3 that seals the container body 31 has a size that slightly protrudes outward from the substantially square outer periphery of the upper horizontal flange 6 of the container body 2 as in the first and second embodiments. A lip 11 is formed at the longitudinal center of each side.

  In this application example 30, with respect to each of the substantially circular projecting protrusions 9, four hook-shaped peeling assisting portions 9 a are formed at equal intervals in the circumferential direction. 6 is located closest to the outer edge or perforation 12. That is, the substantially circular seal-like ridge 9 around each accommodating portion 4 is cut off in the shape of a hook at a portion intersecting the perforated lines 12 and the imaginary lines 31 and 32 extending in parallel with the outer peripheral edge of the upper end horizontal flange 6. An assisting portion 9a is formed.

  According to the third application example, for example, the lip 11 at the position indicated by the arrow F in FIG. 8 is pulled up to start the peeling of the laminate film material 3, and the peeling at the two sealing protrusions 9 adjacent thereto is completed. Since the throat-like peeling assisting portion 9a is formed in the portions A and A of the sealing ridge 9 that first meet after passing through the perforation 12, the sealing ridge in the middle of the unsealing of the laminated film material 3 The laminate film material 3 can be removed from the container body 31 without tearing at the perforation 12 in the middle of the collective opening.

  The illustrated third application example shows the most preferable mode, and when the lip 11 at the position indicated by the arrow F in FIG. Since the throat-shaped peeling assisting portion 9a is also formed in the portions B and B of 9, the initial peeling operation at the time of batch opening of the laminate film material 3 can be promoted. Such an effect is the same regardless of which of the other three lips 11 is pulled up.

Fourth and fifth application examples of the container body (FIGS. 9 and 10) :

  9 shows a container main body 41 of a plastic container according to a fourth application example, and FIG. 10 shows a container main body 51 of a plastic container according to a fifth application example. As the fourth and fifth application examples, FIG. Although illustrated corresponding to the container main body 2 of the first application example described with reference to FIG. 2, the container main body corresponding to the second and third application examples may be used.

  As can be understood from FIG. 9, the corner portions of all of the substantially triangular protrusions 9 for sealing formed in the container main body 41 of the fourth application example have an arc shape. Further, as can be understood from FIG. 10, in the container book 51 of the fourth application example, the upper end flange 6 is constituted by a flat surface, and the above-mentioned sealing protrusion 9 is not provided. The above-described laminated film material 3 is thermally welded to the upper end flange 6 so as to continuously surround the five accommodating portions 4.

First application example of laminate film material (FIG. 11) :

  In the following description of the laminated film material, the first application example of the container body described above will be described as an example. However, the present invention is not limited to this, and can be applied to all the application examples of the container body described above.

  Referring to FIG. 11, the first perforations 12 of the laminate film material 3 are, of course, the slit portion 12a and the non-slit portion 12b located between the adjacent slit portions 12a and 12a. The basic pitch between the adjacent slit portions 12a and 12a, that is, the slit portion 12a is indicated by P2. And the inner end of each 1st perforation 12 is comprised by the slit 12a, and the inner end slits 12a of the five 1st perforations 12 merge. On the other hand, the outer end portion of each perforation 12 is constituted by a relatively long non-slit portion 12 c and a relatively short slit 12 d in contact with the outer edge of the laminate film material 3. That is, the pitch P1 between the short slit portion 12d in contact with the outer end of the laminate film material 3 and the next slit portion 12a is set to be longer than the basic pitch P2 described above. The portion of the long pitch P2 is formed in the outer edge recess 8 of the flange 6 described above. By adopting such a configuration, after the laminate film material 3 is thermally welded to the container body 2, for example, In one step, the first and second perforations 12 and 13 can be formed on the laminate film material 3 and the container body 2, for example.

  That is, referring to FIG. 2, the perforations 13 from the star-shaped central opening 7 of the upper horizontal flange 6 of the container body 2 to the outer edge recess 8 have an equal pitch (P2 in FIG. 11), and preferably The outer end slit of each second perforation 13 is preferably in contact with the outer edge recess 8, and the inner end slit is also preferably in contact with the star-shaped central opening 7. This facilitates the cutting of the container body 2 along the second perforation 13 in order to cut off the arbitrary accommodating portion 4, and also has a pointed section on the upper horizontal flange 6 at the portion of the star-shaped central opening 7. Can be prevented. In other words, when the outer end and / or the inner end of the second perforation 13 is formed of a non-slit portion, the outer perimeter of the second perforation 13 and / or the second perforation 13 is separated when the storage portion 4 is separated. There is a possibility that the non-slit portion of the inner end is forcibly torn off and a sharp portion is formed on the irregular cutting edge.

  Returning again to FIG. 11, the configuration of the first perforation 12 of the laminate film material 3 illustrated in FIG. 11 may be adopted for all the first perforations 12. Alternatively, the first perforations 12 and 12 adjacent to the lip 11 may be adopted.

  When the first perforation 12 shown in FIG. 11 is employed, the lip 11 is pulled up to integrally peel off the entire laminate film material 3 and is provided at the outer end portion of the first perforation 12. Due to the presence of the relatively long non-slit portion 12c, it is possible to prevent the outer end of the perforation 12 from tearing along with the lip 11 being pulled up, and accompanying this, it is possible to suppress tearing along the first perforation 12. It can help to open the laminated film material 3 in an integrated state.

Second application example of laminate film material (FIG. 12) :

  In the first embodiment, the short slit portion 12d is provided at the outer end of the first perforation 12 of the laminate film material 3. However, in the second embodiment, the outer end of the first perforation 12 is not It is comprised by the slit part 12b, and there can exist an effect substantially the same as said 1st application example with reference to FIG. 11 by this.

  Needless to say, the configuration of the first perforation 12 illustrated in FIG. 12 may be adopted for all the first perforations 12, but is adjacent to the lip 11 in relation to the lip 11. The first perforations 12 and 12 may be adopted.

Third example of laminated film material (FIG. 13) :

  In the second application example with reference to FIG. 12 relating to the laminate film material 3, the outer end of the first perforation 12 is constituted by the non-slit portion 12b. However, as shown in FIG. A notch 14 having a substantially triangular shape may be provided, and the notch 14 may be followed by a non-slit portion 12b.

  The notch 14 is useful for cutting the laminate film material 3 along the first perforation 12 when the accommodating portions 4 are individually separated. The notch 14 raises the lip 11 to raise the laminate film material 3. Can be prevented from tearing along the first perforation 12 due to the presence of the non-slit portion 12 b in contact with the notch 14.

  Although it is desirable to provide a notch 14 in each first perforation 12 of the laminate film material 3, the configuration in which the non-slit portion 12 b is provided following the notch 14 is adopted for all the perforations 12. However, in relation to the lip 11, the perforations 12 and 12 adjacent to the lip 11 may be limited to the lip 11.

Fourth application example of laminate film material (FIG. 14) :

  In all of the first to third application examples related to the laminate film material 3 described above, the laminate film material 3 is provided so as to close the central opening 7 of the upper end horizontal flange 6. That is, no opening is provided in the central portion of the laminate film material 3, and all the first perforations 12 are joined together.

  The fourth application example with reference to FIG. 14 relates to this central portion, and this fourth application example may be implemented in combination with the first to third application examples related to the laminate film material 3 described above. Only the fourth application example may be carried out independently.

  Referring to FIG. 14, the first five perforations 12 of the laminated film material 12 are joined by the slit portion 12 a, but the non-slit portion adjacent to the joined slit portion 12 a is relatively long. It is comprised by the slit part 12c. As a result, when the lip 11 is lifted and the laminated film material 3 is opened in a state where it is integrated as a whole, the raised laminated film material 3 is adjacent to the slit portion 12a joined together before and after passing through the central opening 7. Due to the presence of the relatively long non-slit portion 12 c, it is possible to suppress the tearing along the first perforation 12 in the central portion of the laminate film material 3.

  In the laminate film material 3 described above, the example in which the lip 11 is provided has been described. However, as illustrated in FIG. 15, for example, an arrow 15 is attached to the laminate film material 3 to indicate a position to be lifted to remove the laminate film material 3. May be.

First Example (FIGS. 16 to 18) :

  FIG. 16 exemplarily shows the star-shaped central opening 7 of the container body 2 shown in FIGS. 2 to 5 as an example, but the container body 20 having a rectangular shape in plan view described with reference to FIG. Is equally applicable.

  Referring to FIG. 16, the star-shaped central opening 7 includes five curved contours 70 projecting toward the center, five straight portions 71 positioned between two adjacent curved contours 70, 70, and a straight line. It is comprised by the corner part 72 preferably located in the both ends of the part 71, and the linear part 71 is extended in the perpendicular direction with respect to the five perforations 13 of the container main body 2 on design.

  That is, the inner ends of the five perforations 13 of the container body 2 are designed to intersect with the longitudinal intermediate portion of each linear portion 71, and the linear portion 71 is a portion where the designed perforation 13 enters. A distance α extends from the middle of a certain straight line portion 71. In other words, the length dimension of the straight line portion 71 is 2 × α. This distance α is preferably substantially equal to or greater than the tolerance for the position of the perforation 13.

  When the perforation 13 is inserted into the container body 2, it is offset or slightly skewed substantially parallel to the design line, but the position where the perforation 13 enters is offset or slightly skewed from the design line. If this is within the allowable error range, the cutting edge of the central star-shaped circular portion 7 when the arbitrary accommodating portion 4 of the container body 2 is cut along the perforation 13 is The presence of about 90 degrees is promised, and the cutting edge can be prevented from becoming an acute angle.

  The central opening 7 shown in FIG. 16 has a star shape as described above, but may instead be a substantially pentagon or a square as shown in FIGS. 17 and 18. That is, you may have the shape which connected the straight line part 71 which cross | intersects with the perforation 13 vertically by the curved corner part 73. FIG. The substantially pentagonal central opening 7 shown in FIG. 17 is applied to the container body 2 having the five accommodating portions 4 shown in FIG. 2 and the like, and the substantially square central opening 7 shown in FIG. The present invention is applied to the container body 2 having the four accommodating portions 4 shown in FIG.

Second Example (FIG. 19) :

  FIG. 19 exemplarily shows the recess 8 formed on the outer edge of the upper horizontal flange 6 of the container body 2 shown in FIGS. 2 to 5 as an example. The present invention can be similarly applied to a container body 20 having a rectangular shape.

  The outer edge recess 8 of the upper horizontal flange 6 is composed of a straight portion 81 between two adjacent curved contours 80, 80, and a preferably arc-shaped corner portion 82 located at both ends of the straight portion 81. Yes.

  The outer peripheries of the five perforations 13 of the container body 2 are designed to intersect with the longitudinal intermediate portions of the respective straight portions 61 of the outer edge recess 8, and the straight portion 81 has the design perforations 13. It extends a distance β from the part of the entering portion, that is, the middle of the straight portion 81. In other words, the length dimension of the straight portion 81 is 2 × β. This distance β is preferably substantially equal to or greater than the tolerance for the position of the perforation 13. According to this, when the arbitrary accommodating portion 4 of the container body 2 is cut along the perforation 13, the cutting edge relating to the outer edge recess 8 is a straight line if the perforation 13 is within the allowable error range. The presence of the portion 81 promises approximately 90 degrees, and can prevent the cutting edge from becoming an acute angle.

  Most typically, the shape of the outer edge recess 8 of the upper horizontal flange 6 described as the second embodiment is applied in combination with the shape of the central opening 7 or its modification described above as the first embodiment. In this case, the above-described distance β is preferably designed to be substantially equal to the above-described distance α.

  Moreover, it cannot be overemphasized that the 1st Example regarding the said center opening 7 and its modification are applicable with respect to the container main body in which the outer edge recessed part 8 of the upper end horizontal flange 6 does not exist.

It is a perspective view of the plastic container of the 1st application example. It is the perspective view which removed the laminate film material from the plastic container of FIG. It is a top view of the plastic container of FIG. 1, and the laminate film material is shown by the virtual line. It is a perspective view of the storage part cut away from the plastic container of FIG. It is a top view which shows the modification of the container main body of the 1st application example. It is a top view of the plastic container of the 2nd application example, and has shown the laminate film material with the virtual line. It is a figure which shows the modification of the container main body of the 2nd application example. It is a top view of the container main body of the plastic container of the 3rd application example. It is a perspective view of the container main body of the plastic container of the 4th application example. It is a perspective view of the container main body of the plastic container of the 5th application example. It is a fragmentary top view of the plastic container containing the 1st application example regarding a laminate film material. It is a fragmentary top view of the plastic container containing the 2nd application example regarding a laminate film material. It is a fragmentary top view of the plastic container containing the 3rd application example regarding a laminate film material. It is a fragmentary top view of the plastic container containing the 4th application example regarding a laminate film material. It is a figure for demonstrating the modification regarding the lip of a laminate film material. It is a figure for demonstrating a 1st Example exemplifying the star-shaped center opening of a container main body. It is a figure for demonstrating the modification of the center opening shown in FIG. It is a figure for demonstrating the other modification of the center opening shown in FIG. It is a figure for demonstrating the outer edge recess of a container main body, and demonstrating 2nd Example. It is a top view which shows the structure of the conventional plastic container. It is a figure for demonstrating the conventional problem. It is a figure for demonstrating the conventional problem similarly to FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Plastic container of 1st application example 2 Container body 3 Laminated film material 4 Storage part 5 Solid roux (curry)
6 Upper horizontal flange 7 Star-shaped central opening of container body 70 Curved contour of central opening 71 Straight portion of central opening 8 Outer edge recess of upper horizontal flange 80 Curved contour of outer edge recess 81 Straight portion of outer edge recess 12 Laminated film material Perforation (first perforation)
13 Perforation of container body (second perforation)

Claims (5)

A plurality of accommodating portions opened above the container body are connected to each other by an upper end horizontal flange, and a recess where two curved outer contours intersect is formed at the outer edge between the accommodating portions in the upper end horizontal flange, In a plastic container that can be separated individually by cutting along perforations in contact with the recess,
The outer edge recess of the upper end horizontal flange includes two curved outer contours and a first straight portion connecting the two curved outer contours, and the perforation is substantially vertical to the first straight portion. A plastic container characterized by contact. The upper horizontal flange further has an opening in its central portion;
The plastic container according to claim 1, wherein the central opening has a second straight portion in contact with the perforation substantially perpendicularly.   The plastic container according to claim 2, wherein the central opening has two curved portions connecting the two second straight portions adjacent to each other. A plurality of receiving portions opened above the container body are connected to each other by an upper end horizontal flange, and an opening is provided in a central portion of the upper end horizontal flange, and is provided between the center opening and an outer edge of the upper end horizontal flange. In a plastic container that can be separated individually by cutting along perforations,
The plastic container, wherein the central opening has a second straight portion in contact with the perforation substantially perpendicularly.   The plastic container according to claim 4, wherein the central opening has two curved portions connecting the two second straight portions adjacent to each other.

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