JP2007216969A - Egg packaging container, and its manufacturing method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To manufacture and provide an inexpensive egg packaging container by using a synthetic resin-made sheet with a colored portion being formed in advance in each corresponding portion of a color marker and a coloring part in order to reduce the production cost by omitting the working cost for providing the color marker corresponding to the size specification of eggs during a packaging process. <P>SOLUTION: The egg packaging container comprises a container body 1 formed by swelling a synthetic resin-made sheet material and provided with individual recesses 11 for housing eggs, and a lid 2 continuously formed to the container body 1 via a folding part 3. In a manufacturing method of the container, the egg packaging container is formed and processed in a predetermined shape by using the synthetic resin-made sheet material 5 with a coloring part 15 for merchandise information, advertisement or the like including a color marker 13 for displaying the size of housed eggs formed in advance by a multi-color extrusion molding method when manufacturing the synthetic resin-made sheet material to form the container. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an egg container in which a generally known synthetic resin sheet material is formed by bulging and forming a color or pattern that presents an aesthetic appearance on the container and appealing for its commercial value in the market. The present invention relates to a chicken egg packaging container in which a predetermined color is also displayed for identification in accordance with the size of the egg, that is, the egg weight, and a method for manufacturing the same.

As is well known, a container for egg wrapping formed by bulging and molding such a synthetic resin sheet material is formed as a series of a container body and a lid through a bent portion, and holds eggs without rattling on the container body and the lid. A storage recess is formed along the outer shape of the egg to be processed, and at the same time, large and small ribs and unevenness for reinforcing the container are provided on the wall surface and upper and lower surfaces of the storage recess. Around the part where a predetermined number of storage recesses are collectively provided, a peripheral flange is formed on both the container body and the lid, and the lid is folded on the container body by folding at the folding part in the packaging process. Cover and close the peripheral ridge of the container body and the peripheral ridge of the lid, and seal with a means such as tape or welding. In the packaging process, before and after sealing, a label displaying various information standards such as name, producer, advertisement of product features, expiration date, egg weight or size standard, etc. is enclosed or attached to the lid. (Patent Document 1) In particular, egg weight has been standardized for a part of the packaging container, that is, the peripheral edge of the container or the bent part corresponding to the standards such as LL, L, M, etc. for the convenience of distribution. A predetermined color is given and distributed. Other product information relating to eggs was obtained by means of polymerizing and bonding a synthetic resin film having a character design printed on a sheet material (Patent Document 2).
Japanese Patent Laid-Open No. 2004-75182 Japanese Examined Patent Publication No. 7-106743

  In the conventional egg packaging containers described above, the color established for the egg weight is usually displayed in a line at the bent part, which is the boundary between the container body and the lid. In this method, the labeling process is increased by one step in the packaging process, which increases the manufacturing cost and is handwritten or written on the container having a lot of irregularities after molding. It is not easy to apply color markers by printing, and there is a disadvantage that it is inefficient from the viewpoint of productivity. In addition, implementing color advertisements that improve product value such as product information and appearance decoration by sheet polymerization requires expensive sheet material that is a composite layer, while enclosing display labels or pasting on lids. The means for attaching requires a separate part fee such as a label and a sticking process cost, and these costs still have a problem to be solved that further increases the manufacturing cost of the entire product.

  Accordingly, the present invention provides a predetermined coloring in advance in a corresponding portion on the sheet where a predetermined coloring portion is formed after molding in the state of the synthetic resin sheet material in the previous stage to be molded into a container for egg packaging. By giving a colored part that becomes a part, there is no extra process for coloring, advertising decoration and display at the time of packaging, reducing production costs and being inexpensive, beautiful and highly appealing and high in commercial value An object of the present invention is to provide a chicken egg wrapping container capable of supplying a chicken egg and confirming the state of the egg without disturbing the visual recognition of the inside of the container in the closed state.

  The present invention for achieving the above object will be described using the same reference numerals as those of the drawings showing the embodiments. The egg packaging container of the present invention is a container for accommodating a plurality of eggs, in which a synthetic resin sheet material is bulged. An egg packaging container comprising a container body 1 having an individual recess 11 and a lid body 2 having a recess 21 covering the container body 1 and the upper part of a containing egg formed in series via a bent portion 3. In addition, the transparent portion 14 is left in a strip shape over the entire length in the longitudinal direction of the container including the bottom of the individual recess 11 for storing eggs in the container body 1, and the coloring portion 15 is formed on a part or all of the remaining portion. It is set as the structure made.

  Moreover, the manufacturing method of the container for egg-packing of this invention leaves the transparent part 14 in strip | belt shape over the longitudinal direction full length of the container including the bottom part of the individual recessed part 11 for egg-containing of the container main body 1, A method for manufacturing an egg packaging container in which a colored portion 15 is formed in part or in whole, which is a transparent material having a predetermined width that becomes the transparent portion 14 after molding of the container and extending over the entire length in the longitudinal direction. The transparent portion 53 and the colored portion 52 are alternately joined in parallel with a predetermined number of strips of the sheet and a colored material sheet formed with a predetermined width and full length in the longitudinal direction that becomes the coloring portion 15 after the container is molded. And a sheet material molding step A for obtaining a synthetic resin sheet material 5 having a striped appearance, and an egg packaging container in which the synthetic resin sheet material 5 includes a container body 1 and a lid body 2 having a predetermined shape. Sheet forming step B for continuously forming the portion 51, and sheet It is obtained by a structure comprising cut separating the egg packaging containers corresponding portion 51 from the sheet 5 'after molding the outer cutting step C to obtain a container Pc for eggs packaging.

  As is apparent from the above description, the egg packaging container of the present invention is transparent at least at the bottom of the individual recess for accommodating eggs in the container body, so that even in the unlikely event that the accommodated eggs are damaged, It is possible to find defective products and take appropriate measures. Moreover, unlike the conventional colorless and tasteless and dry egg container, it is inexpensive as a whole and can increase the prosecution power, and can greatly contribute to the market distribution of eggs having high commercial value, thereby increasing the consumer's willingness to purchase. Further, in the production of the container, at the time of production of the synthetic resin sheet material, it is possible to adopt a configuration in which colored portions are formed in stripes on the sheet material itself that should become the coloring portion after molding by a multicolor extrusion molding method. Therefore, the increase in the price of the sheet material is small compared to the conventional one, and a large number of opened egg packaging containers can be manufactured at once from a large area sheet material. The increase in the manufacturing price per sheet is negligible, and it is almost negligible compared with the cost of pasting seals and enclosing other parts after conventional container molding. It is possible to provide a chicken egg packaging container with a color sign indicating a standard and a color and design with an excellent design feeling.

  In addition, according to the method for manufacturing a container for egg wrapping of the present invention, at the time of manufacturing a synthetic resin sheet material, the multi-color extrusion molding method is used to form a colored portion in a striped pattern on the sheet material itself that should become a colored portion after molding. Therefore, the price increase of the sheet material is small compared to the conventional one, and since it is a structure that manufactures a large number of open egg packaging containers at once from a large area sheet material, the egg packaging container The increase in the manufacturing price per sheet is negligible, and it is almost negligible compared to the cost of pasting seals and enclosing other parts after conventional container molding. It has an effect that can provide a container for packaging eggs having a color sign representing a standard and a color and design with an excellent design sense. In addition, the egg packaging container manufactured by the manufacturing method is formed in a transparent manner at least at the bottom of the individual recess for storing eggs in the container body, so that it is surely defective even if the stored eggs are damaged. Unlike traditional colorless and tasteless dry egg containers, it is cheaper as a whole and increases prosecution power, making a significant contribution to the market distribution of high-product-value eggs. To increase consumers' willingness to purchase.

  In carrying out the manufacturing method of the egg packaging container of the present invention, the egg packaging container manufacturing process includes: a sheet material molding process A for obtaining the synthetic resin sheet material 5; and an egg with the synthetic resin sheet material 5 opened. It consists of a sheet molding step B for forming a sheet 5 ′ in a state where the packaging container is densely and continuously molded, and an outer shape cutting step C for forming a container independent of the sheet 5 ′. The raw material resin may be any kind of synthetic resin, but PET, PC, PS, etc., which are generally used in large quantities and are non-polluting, are suitable. As for the form of the egg wrapping container, the container main body 1 in which the individual recessed portion 11 for containing eggs is formed and the lid body 2 in which the recessed portion 21 covering the upper part of the containing egg is connected by the bent portion 3. A container containing a plurality of eggs is formed. In the sheet material molding step A, a synthetic resin sheet material 5 which is a material for container molding is manufactured using a general co-extrusion molding machine having a plurality of nozzles for multiple colors. The co-extrusion molding machine for multi-color in FIG. 1 is a schematic diagram for explanation, so the main body portion of the molding machine is omitted, the extrusion width is narrow, and only the nozzle portion is shown. In the figure, there are seven nozzles, and the nozzle N1 pushes out a new material resin that becomes a transparent portion to obtain a transparent material sheet that becomes the transparent portion 53 of the sheet. The nozzles N2, N3, N4,... Need not be made of a new material resin except for the transparent portion 53, so that they are translucent, opaque, or obtained by recycling waste materials. A hybrid resin colored in color is pushed out to obtain a material sheet to be a colored portion 52 other than the transparent portion 53. The transparent material sheet and the colored material sheet are arranged in parallel according to a predetermined color scheme, and the boundary portion is joined, and the colored portion 52 and the transparent portion 53 are formed in a vertical stripe shape as predetermined. It becomes. FIG. 3 is an enlarged perspective view of a part of the synthetic resin sheet material 5 immediately after manufacture and before sheet molding. In the figure, the colored portion 15 that becomes the egg weight standard, product information, advertisement design portion, etc. after the container is completed is represented as a colored portion 52. The coloring portion 15 is applied except for the bottom of the container body 1, and the bottom is left transparent, so that if the stored eggs are damaged after being stored, the accident is easily found, This is because it is possible to take an appropriate measure. Forming the material sheet in which the colored portion 52 and the transparent portion 53 are mixed and formed by the multicolor extrusion molding means in one step means that a container in which the transparent portion 14 and the colored portion 15 are mixed and mixed is conventionally used. It is possible to manufacture at almost the same unit price. In addition, by this means, the color of the raw material resin extruded by a plurality of nozzles can be mutually changed, and printing means such as roller transfer can be used together, or a thin layer sheet with a color or pattern can be attached to the container. It is possible to create a design with a complicated decoration value by changing the coloring pattern.

  Next, in the synthetic resin sheet material 5, in the sheet molding step B, as shown in FIG. 4, the egg packaging container equivalent part 51 includes the peripheral flange parts 12 and 22 and the bent part 3 continuously. The sheet 5 ′ is formed. The sheet molding in this case may be vacuum molding or blow molding. Next, the sheet 5 ′ is punched into a predetermined shape together with the egg packaging container equivalent part 51 and the peripheral flange parts 12 and 22 as shown in FIG. FIG. 6 shows an egg packaging container manufactured by this manufacturing method in an opened state. In the egg packaging container shown in the figure, among the colored portions 15 which are product information, advertisement design portions, etc., the display corresponding to the standards such as LL, L, M, etc. for the convenience of distribution regarding the egg weight is particularly colored sign 13. As shown in FIG.

  In the drawings described above, the egg-wrapping container equivalent portions 51 are formed in the horizontal direction in two rows in the synthetic resin sheet material 5 and are continuously molded in the vertical direction, so the width of the synthetic resin sheet material 5 is horizontal. The colored portions 52 are narrow in accordance with the number of rows in the direction, and have a predetermined number of vertical stripes with the transparent portion 53 interposed therebetween. However, it goes without saying that in actual mass production, the synthetic resin sheet material 5 is made wider to increase the number of rows in the horizontal direction to increase productivity.

  The produced egg packaging container has the most general shape in which the peripheral edge of the opposite side of the bent part 3 is a color marker 13 as shown in FIG. However, in the sheet material molding process of the synthetic resin sheet material 5, the colored portion 52 can be used as the color marker 13 by forming the colored portion 52 at a position that becomes the folded portion 3 after the container is molded. Further, in FIG. 3, the entire surface of the lid 2 is a transparent portion 53. However, by extending the colored portion 52 to the portion to be the lid 2 or by forming it separately, any portion can be colored portion 15 ( Needless to say, the color sign 13) can be used.

  The details of the present invention will be described below based on the embodiments shown in the drawings. FIGS. 1 to 7 are views for explaining a first embodiment of the present invention, and FIGS. 1 and 2 are general schematic views for explaining a method of manufacturing a container for egg wrapping. FIG. 3 is an enlarged perspective view showing a synthetic resin sheet after multicolor extrusion molding. FIG. 4 is an enlarged perspective view showing a state of the sheet after the sheet forming step. FIG. 5 is an enlarged perspective view showing a state of the sheet and the egg packaging container during the outer shape cutting process. FIG. 6 is a reference perspective view of the egg packaging container with the lid open. FIG. 7 shows a reference perspective view in a closed state.

  The whole image of the manufacturing method of the egg packaging container of 1st Example is shown with a schematic schematic diagram in FIG. 1, FIG. A is a sheet material molding step, and since the figure is a schematic diagram for explanation, the main body portion is omitted, the extrusion width is narrow, and only the nozzle portion is shown. Seven nozzles are described in the figure, and transparent resin is extruded from the nozzle N1 denoted by reference numeral N1 to become a transparent portion 53 of the synthetic resin sheet material 5, and black colored resin is emitted from the nozzles N2 to N7. Is extruded and becomes the colored portion 52 of the synthetic resin sheet material 5. Further, from the nozzles N2 and N7, an orange-colored resin to be a predetermined color marker 13 displayed corresponding to the egg weight standard of the housed eggs and a black-colored resin to be the color portion 15 are displayed. Is extruded in a joined state. Each extruded sheet-like resin is joined to the boundary between the transparent portion 53 and the colored portion 52, and a portion corresponding to the bottom of the individual recessed portion 11 for containing eggs in the container body 1 is formed in a band-like transparent portion in the longitudinal direction. The synthetic resin sheet material 5 is left as 53, and predetermined colored portions 52 are formed in other necessary portions. FIG. 3 shows an enlarged part of the sheet material in this state.

  Next, the synthetic resin sheet material 5 is formed in the sheet molding step B, as shown in FIG. 4, where the egg packaging container equivalent portion 51 is formed in a continuous and dense manner including the peripheral flange portions 12 and 22 and the bent portion 3. Sheet 5 ′. Then, in the next outer shape cutting step C, the sheet body 5 'is punched into a predetermined shape together with the container body 1, the lid body 2 and the bent portion 3 as shown in FIG.

  FIG. 6 shows the opened state of the egg packaging container Pc manufactured by this manufacturing method. The shape is a container for storing 10 eggs in 5 rows and 2 stages, and is composed of a container main body 1 and a lid 2, and the container main body 1 is formed with individual concave portions 11 for storing eggs and a peripheral collar portion 12. The lid 2 is formed with a recess 21 and a peripheral collar 22 that cover the upper part of the containing egg. A color marker 13 is formed on the peripheral flange portion 12 on the free end side in the longitudinal direction of the container body 1, and a color portion 15 is formed on the side surface except for the vicinity of the bottom of the individual recess 11 for containing eggs. The color mark 13 is determined according to the egg weight standard to be accommodated, that is, the egg size. In this embodiment, the egg size is orange corresponding to the L dimension, but it should be determined according to the egg size. Needless to say, pink is set when the size is LL size, orange is set when the size is L, green is set when the size is M, and yellow is set when the size is not uniform.

  FIG. 7 shows the appearance in the closed state. Taking advantage of the high degree of freedom in the color scheme and design peculiar to the multicolor extrusion molding method, only the portion close to the bottom of the individual recessed portion 11 for containing eggs of the container body 1 is left as the transparent portion 14, and the individual for containing eggs A portion excluding the transparent portion 14 of the recess 11 is a coloring portion 15. The surface of the lid 2 is a transparent portion 14. The standard display of egg weight is displayed as a color marker 13 in particular on the peripheral edge 12 on the side opposite to the bent portion 3, and is orange in this embodiment. The peripheral collar portion 12 other than the color marker 13 has the same color as the colored portion 15 of the container body 1.

  FIGS. 8 and 9 are views showing a second embodiment of the present invention. FIG. 8 shows the state of the synthetic resin sheet material 5 before sheet molding, and FIG. 9 shows the appearance of the closed state. In this embodiment, only the portion close to the bottom of the individual recessed portion 11 for containing eggs in the container main body 1 is left as the transparent portion 14, and the portion excluding the transparent portion 14 of the individual recessed portion 11 for containing eggs and the side surface of the lid 2 are excluded. The top surface is a coloring portion 15. Although not shown in the drawing, the coloring portion 15 is appropriately mixed with the design of a part of the lid 2, for example, only the side surface, a part of the side surface and the top surface, or conversely a part of the top surface and the side surface. It goes without saying that there are also containers according to the embodiment.

  Although the embodiments considered to be representative of the present invention have been described above, the present invention is not necessarily limited only to the structures of these embodiments, and includes the structural requirements referred to in the present invention, and achieves the object referred to in the present invention. However, it can be carried out with appropriate modifications within the range having the effects described in the previous section.

  The egg packaging container of the present invention is almost as inexpensive as a conventional egg packaging container, and can eliminate the extra steps for displaying colors and displaying decorations in the packaging process. Therefore, it greatly contributes to the cost reduction of the egg production as a whole, and it is possible to increase the prosecution power by the innovative container design and capture the impression to the customer, and to increase the willingness to purchase. Therefore, the possibility of being used in place of a conventional egg packaging container is extremely high.

The schematic schematic diagram for demonstrating the first half part of the manufacturing method of the egg packaging container which is 1st Example. The schematic schematic diagram for demonstrating the second half part of the manufacturing method of the container for eggs packaging of an Example. The expanded perspective view which shows the synthetic resin sheet raw material after the co-extrusion molding process in the Example. The expansion perspective view which shows the state of the sheet | seat after a sheet molding process. The expansion perspective view which shows the state of the sheet | seat in the same outline cutting process and the egg packaging container. The reference perspective view of the open state of the container for eggs packaging same as the above. The reference perspective view of the closed state of an Example similarly. The expansion perspective view which shows the synthetic resin sheet raw material after the co-extrusion molding process in 2nd Example. The reference perspective view of the closed state of an Example similarly.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Container main body 11 Same, individual recessed part for accommodation eggs 12 Same, peripheral collar part 13 Color 14 Transparent part 15 Colored part 2 Lid body 21 Same as above, Concave part which covers the upper half part of the accommodation egg of a lid body 22 Same, peripheral collar part 3 Bending part 5 Synthetic resin sheet material 5 'sheet 51 Corresponding part for egg packaging container after sheet material molding process 52 Colored part 53 Transparent part Pc Egg packaging container A Sheet material molding process N1 Extruding nozzle for transparent part of process Tip N2 to N7 Same as above, Extrusion nozzle tip in the colored part of the process B Sheet molding process C Outline cutting process

Claims (2)

A container body (1) provided with a plurality of individual recesses (11) for accommodating eggs, which is formed by bulging a synthetic resin sheet material, and the container body (1) is formed in series with the bent part (3). And a lid (2) having a recess (21) covering the upper part of the containing egg, and including the bottom of the individual egg receiving recess (11) of the container body (1), An egg packaging container in which a transparent part (14) is left in a strip shape over the entire length in the longitudinal direction of the container, and a coloring part (15) is formed on a part or all of the remaining part. The transparent portion (14) is left in a strip shape over the entire length in the longitudinal direction of the container, including the bottom of the individual recess (11) for accommodating eggs in the container body (1), and a coloring portion is formed on a part or all of the remaining portion. (15) is a method for manufacturing a container for egg packaging, wherein the container is a transparent material sheet formed over the entire length in the longitudinal direction with a predetermined width that becomes a transparent portion (14) after container molding, A colored material sheet formed with a predetermined width and extending over the entire length in the longitudinal direction, which becomes a colored portion (15) after molding, is alternately joined in parallel with a predetermined number of strips, so that a transparent portion (53) and a colored portion ( 52) and a sheet material molding step (A) for obtaining a synthetic resin sheet material (5) having a striped appearance, and a container body (1) and a lid (2) having a predetermined shape on the synthetic resin sheet material (5) A sheet molding step (B) for continuously forming an egg packaging container equivalent part (51), and the egg packaging container equivalent part from the sheet (5 ') after the sheet molding. A method for producing an egg packaging container, comprising: an outer shape cutting step (C) for cutting and separating (51) to obtain an egg packaging container (Pc).

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