KR20040072664A - Method for producing gas exchange package - Google Patents

Abstract

Provided are a method for producing a gas packaging member that can cope with a container of various sizes and shapes, a sealing packaging container, and a packaging member thereof. In a packaging container using a plastic container and a cover, the edges of the container and the cover are overlapped, the edges are sealed with a band-shaped tape, and the inside of the container is sealed by gas replacement through a hole in the packaging container. The manufacturing method of a substituted packaging member, its sealing packaging container, and its packaging member.

Description

Manufacturing method of gas substitution packing member {METHOD FOR PRODUCING GAS EXCHANGE PACKAGE}

Conventional foods have been common in the form of purchasing food ingredients from each household and cooking them, but recently, in order to easily perform household chores, foods prepared in advance in a back yard such as a supermarket or a central kitchen, etc. are sold at a supermarket or a convenience store. Many lifestyles are said to be purchased and eaten at home. These cooked foods are actively developed in various sizes and shapes in order not only to develop the contents but also to maximize the display effect by changing the shape and design of the packaging container.

In particular, in the field of side dishes, instead of selling the same foods in large quantities as in the prior art, foods that can be obtained by different types of cooking methods are categorized into small and increased types of sales so that consumers can select them according to their preferences. It is supposed to be. Therefore, for side dish sellers such as supermarkets and convenience stores, the complexity of the apparatus required for the switching of the apparatus when packing a small quantity and a variety of foods, the decrease in the production efficiency due to the complexity, and the small quantity and the various kinds of containers are determined. The trouble of parts management of a packaging machine becomes a problem.

On the other hand, cooked foods utilizing the taste of the material itself tend to be required, but foods that reduce the amount of food additives, etc., tend to decay quickly, resulting in short product cycles. There is also a problem.

As a method of storing a product for a long time, so-called gas-substituted packaging is known which aims to increase the production efficiency by storing food in an inert gas atmosphere or the like to reduce the long-distance of the product distribution and to reduce the expired product. As an example of such a gas replacement package, Japanese Patent Laid-Open No. Hei 9-295677 has a tray portion containing contents well and a lid portion covered with the tray, and a gas inlet is provided on the ceiling surface of the lid. A gas-filled packaging method is disclosed in which a gas outlet is provided around a gas-filled packaging tray. The gas-filled packaging method surrounds the entire circumference with a heat-shrinkable film having gas barrier properties. In this method, since the gas is blown in from the gas inlet and exhausted from the exhaust port around the lid, the air remaining in the inside of the covered tray can be replaced with gas.

In addition, Japanese Patent Application Laid-Open No. 4-189721 discloses an insulating base plate having a heating element arranged at the corner of an opening opened in a plate-shaped member, and after placing the container by matching the flange portion of the container with the heating element, the contents are placed in the container. A method is disclosed in which a lid is covered after gas replacement in a vacuum chamber, conveyed to a conveyor device, and then the pressure plate is lowered from the top of the container to thermally seal the container and the lid by means of a heated sealing device.

In addition, Japanese Patent Laid-Open No. 61-103 discloses contents in a container formed of a synthetic resin sheet, covers the opening of the container with a sealing film or sheet, and then heat-presses the entire container opening from the sealing film or the upper surface of the sheet with a hot roll. The method of thermally bonding the periphery of an opening part is disclosed.

However, since the method represented by Unexamined-Japanese-Patent No. 9-295677 is a method of simply flashing gas into a packaging container from a gas intake opening of the ceiling surface of the said cover, and venting air from a gas outlet, The substitution rate at the time of substitution with gas is low, and oxygen contained in the contents cannot be replaced with the substitution gas depending on the shape of the contents. In addition, since the entire circumference of the packaging member is enclosed with a gas barrier heat-shrinkable film, the film is likely to be torn due to the intrusion of a gas inlet or gas outlet present on the ceiling surface of the lid, which may cause leakage of the filled gas. In addition, since there is a double packaging of the container and the film, a large amount of packaging material is required, and the problem of the burden on the operator based on the container recycling method is increased.

On the other hand, the gas replacement method disclosed in Japanese Patent Laid-Open No. 4-189721 requires that a corresponding heating element be arranged for each of various various containers having different sizes and designs. For this reason, a seal type tool having a pressure resistance specification that can cope with a change in air pressure in the chamber is required, and it is expensive to produce a dedicated seal type tool for each such container.

Moreover, the method of Unexamined-Japanese-Patent No. 61-103 makes the deformation | transformation of the sealing film or sheet | seat by heat generate | occur | produce when heat-pressing a container opening part by a heat roll with a sealing film or sheet | seat. In addition, when the contents rise from the depth of the container, the contents are pressed on the upper film, or the films overlap each other at the flange portion of the container, causing wrinkles, and foreign matters are mixed from the gap. In addition, when the shape of a container differs, there exists a problem similar to the above-mentioned example by the point which needs to prepare the heating type tool of the shape corresponding to it.

The present invention provides a method for producing a gas packaging member and a sealing packaging container, in which the space in the packaging container and the air in the contents can be replaced with a gas having a high substitution rate, and in accordance with the container recycling method. It aims to provide.

TECHNICAL FIELD This invention relates to the manufacturing method of a gas substitution packaging member, the packaging container for sealing, and its packaging member.

1 is a perspective view of each of the base container and the lid.

2 is a perspective view when the support container and the cover are stacked.

3A and 3B are cross-sectional views of the base container and the lid overlapped with each other.

Figures 4a and 4b is a view showing a flange portion of the base container of Figure 1, Figure 4a is a plan view, Figure 4b is a front view.

5A to 5C are examples of concave shapes in the horizontal and vertical portions shown in Figs. 4A and 4B. Fig. 5A is a triangular shape in the horizontal portion, Fig. 5B is a semicircle or semi-ellipse, and Fig. 5C is It shows a trapezoidal shape.

6 is a perspective view of a configuration example in which a step and a reinforcing surface are formed in the configuration of FIG. 3A.

FIG. 7 is a partial plan view of the support container flange portion shown in FIG. 6; FIG.

8 is a view showing one example of a hole shape and an adhesive label shape.

9 is a perspective view of a gas substitution method of the present invention.

10 is a perspective view of the support container used in the embodiment.

11 is a perspective view of a lid used in the embodiment.

12 is a perspective view when the support container and the cover used in the example are stacked.

Fig. 13 is a perspective view of the strip-shaped tape sealed state of the embodiment.

Fig. 14 is a perspective view showing a state where the lid portion of the supporting container is sealed with a tape-shaped tape;

Fig. 15A is a perspective view showing a sealed state in which the base container and the cover-laden corner are sealed with a band tape in a clockwise direction, and the last end of the band tape is a sealed state not bonded to the base container and the lid, and Fig. 15B is a base container. And a perspective view showing a state in which the end portion of the strip-shaped tape which is not adhered to the lid is pulled and opened, and Fig. 15C is a schematic view of the state where the end portions of the strip-shaped tape in Fig. 15A are overlapped.

16A to 16C are examples of the case where the side portions in the longitudinal direction of the strip-shaped tape are cut using the same supporting container and the lid as in FIGS. 15A to 15C, and FIG. 16A is the sealing completed using the strip-shaped tape taped thereto. Fig. 16B is a perspective view showing a state, and Fig. 16B is a perspective view showing a state in which the end portion of the band-shaped tape is cut off by the incision of the tension band-shaped tape and opened, and Fig. 16C is a end portion of the band-shaped tape in Fig. 16A. It is a schematic view seen from the upper side.

17A and 17B show an example in which a cut tape is provided at the center of the width of the belt-shaped tape in parallel with the lengthwise direction of the belt-shaped tape by using the same support container and lid as in FIGS. 15A and 15B. Fig. 17B is a perspective view showing a state in which sealing is completed using a strip tape taped in parallel with the cut tape. Is a state attached to the supporting container and the lid), and is a perspective view showing a state in the middle of opening the container.

The manufacturing method of the gas substitution packing member by this invention consists of a support container and a lid | cover, and the container which covers the upper part of a support container upper surface by sealing | covering the overlapping part by the strip | belt-shaped tape by the said support container and a lid being superimposed in each corner part. The container has a hole, and after degassing the air inside the container through the hole, the container is sealed with a gas other than air.

It is preferable that the said container is made of plastic.

It is preferred that the container, strip tape and adhesive label have gas barrier properties.

An edge portion of the supporting container and the cover has a horizontal portion protruding in the horizontal direction from the opening portion, a flange portion consisting of a substantially vertical portion extending in the vertical direction from the horizontal portion distal end portion and an edge portion present at these boundary portions, the inner side of the flange portion It is preferable that the vertical part of the side which overlaps with is longer than the vertical part of the side which overlaps outward, and the vertical part of the inside of the part which the outer side of the vertical part contact | connects has a step part, and it seals by sticking a strip | belt-shaped tape over this step part.

The gas replacement hole is preferably present on the upper surface of the lid.

The vertical portion of the flange portion preferably extends below the vertical portion from the horizontal portion.

The packaging container according to the present invention has a flange portion comprising a horizontal portion protruding in a horizontal direction from an opening portion of a supporting container and a cover and a substantially vertical surface extending in a vertical direction from the horizontal portion distal portion, wherein among the flange portions. It is characterized in that the vertical portion of the side overlapping inward is longer than the vertical portion of the overlapping side, and has a stepped portion in the vertical portion of the inner side of the portion in which the outer vertical part distal end is in contact.

You may have the recessed part formed so that a vertical part may be recessed inward, and a horizontal part may be recessed in the corner part of a lid | cover and / or a support container, respectively.

You may have a reinforcement surface which protrudes horizontally outward from the vertical part edge part of the side which overlaps inward.

The present invention also provides a packaging member that can be obtained by the method for producing a gas packaging member.

EMBODIMENT OF THE INVENTION Hereinafter, the preferable aspect of this invention is demonstrated in detail. First, the packaging container used by this invention is demonstrated.

The packaging container referred to in the present invention is composed of a supporting container and a lid, and the material thereof is not particularly limited. For example, plastics, metals, wood, paper, other single members or laminates of the above materials may be mentioned. In addition, the cover of the present invention is a shape that covers the upper portion of the base container, the material may be the same material as the base container. Especially, it is preferable that it is made of plastic for reasons such as being transparent and visible in contents, being excellent in gloss, being excellent in appearance and having a separate collection system at the time of disposal. Moreover, it is more preferable that it is the gas barrier plastics mentioned later from a viewpoint of gas dispersal prevention. When the volume of the contents is to be exhibited by the display effect of the container, the height of the support container may be lower than the height of the lid covering the upper part. In addition, the shape of the support container opening part of this invention may be polygons, such as a circle, a triangle, a square (rectangle, a square), a rhombus, etc., and may be an oval and the amorphous which consists of a curve.

This container is used by sealing it with a strip | belt-shaped tape, ie, sticking in strip | belt-shaped tape in the state over both edge parts of a support container and a lid | cover.

The nested portion of the base container and the lid as used in the present invention refers to a portion where the edges of the opening surfaces of the base container and the lid overlap and are closed. The shape of the edges may be either straight or curved as long as both of them are overlapped and closed. In addition, if the inside of the container can be sealed when sealed by the strip-shaped tape, it is not necessarily necessary to install it on the entire edge, but it is preferable to provide it around the entire circumference. In addition, a part of the support container and the cover may be joined via the hinge portion.

In order to maintain the rigidity of a container while being able to perform sealing efficiently, it is more preferable that this overlap part has a flange part, and is a shape overlapped by the said flange part. In the case of having a flange portion, a stable sealing portion can be obtained simply by applying a strip of tape to the end portion of the flange portion, that is, the end portion of the vertical portion.

The flange means the entire portion extending from the edge of each opening of the base container and the cover, and corresponds to the flange-shaped portion (for example, numerals 11 and 21 in FIG. 1) in which the base container and the cover are superimposed. This flange part consists of a horizontal part (12 and 22 in FIG. 1) and a vertical part (13 and 23 in FIG. 1), and an edge part (14 and 24 in FIG. 1) which exists in the boundary part of a horizontal part and a vertical part.

The said horizontal part is the surface extended substantially horizontally from the edge of the opening part of a support container and a cover. If it is approximately horizontal, there is no problem even if it is inclined or there are some irregularities in the thickness of the material.

Incidentally, the vertical portions (13 and 23 in Fig. 1) are surfaces extending in the vertical direction from the horizontal portion. If the vertical portions are substantially inclined, they do not interfere. In addition, the extending direction may be either upward or downward from the horizontal portion, or the lid side is upward while the lid side is upward, but both the lid and the saucer are downward in that it is difficult for garbage or dust to enter from the overlapped portion. This is preferred.

Thus, by providing the flange part with a perpendicular part, even if it performs mechanically using an adhesive apparatus etc., a strip | belt-shaped tape can be attached stably to a perpendicular part. Since it can attach with a strip | belt-shaped tape over the edge part of the flange part of both a lid | cover and a support container, since a strip | belt-shaped tape can be sealed without wrinkles also in the corner part of a container, it is preferable. In particular, when the length of the flange on the inner side of the container in the vertical portion is longer than the length of the vertical portion on the outer side of the container, it is particularly effective when advancing the adhesive work using an adhesive device having a high working speed. That is, when the vertical portion extends downward from the horizontal portion, the length of the vertical portion of the support container is longer than the vertical portion length of the lid, and conversely, when the vertical portion extends upward from the horizontal portion, the length of the vertical portion of the lid is supported. It is good to make it longer than the length of the perpendicular part of. By setting it as the container shape mentioned above, the strip | belt-shaped tape does not generate | occur | produce also in the corner part of a container, and it does not produce the fall of sealing property. In addition, when the sealing operation is performed using the packaging device, even if the shape or size of the container is changed, it is possible to cope by simply changing the width or the attachment position of the strip-shaped tape to be installed in the packaging device. No trouble, etc. are required.

In addition, if a step having a depth that can accommodate the thickness of the shorter vertical portion (81 in Fig. 6) is provided in the longer vertical portion, the vertical portion becomes flat, so that the strip-shaped tape can be attached flat. Therefore, the work becomes easier, the strength as the packaging member is increased, and the packaging member is also easily handled.

The length of the vertical portion may be hung with a band-shaped tape, and is not particularly limited. However, the thickness of the vertical portion may be difficult to deviate between the lid and the support container when the tape is attached, so that the tape is easily adhered to the tape and the rigidity of the flange portion is increased. It is preferable at the point of becoming high and aesthetics high. More preferably, they are 3 mm-30 mm, More preferably, they are 4 mm-25 mm.

In the case where the vertical portions of the support container and the cover are respectively extended in the reverse direction, the flange portion may be provided with a recess or a convex portion for positioning. The place and its size may be any so long as it does not shift when the strip-shaped tape is aligned with the boundary between the lid and the support container. Especially, when provided in the periphery of a support container opening part, especially the corner part inside a support container inside, it is preferable from a viewpoint of the external appearance or the ease of taking out the content. Moreover, it is further more preferable to provide a recessed part in a support container side horizontal part, and a convex part in a cover side horizontal part.

Further, in order to increase the strength, a concave portion (15 in Fig. 1) may be formed in the flange portion. In this way, there is no possibility that the flange portion is deformed by the external force applied when the strip-shaped tape is attached, and the appearance and the sealability deterioration due to the deformation are prevented.

In addition, the flange may have a fitting set. The fitting means a shape having a groove for fitting between the base container and the lid at the corners of the base container and the lid. The fitting method can be broadly divided into three types: external fitting, internal fitting and internal and external fitting. The external fitting is a shape which can be manufactured cheaply and simply because the precision of the mold at the time of molding the container is not necessary. On the other hand, the internal fitting requires a mold precision when molding the container compared to the external fitting, which is expensive in terms of cost, but when the contents include side dishes containing broth, the outflow of the broth out of the container can be prevented. In addition, the inner and outer fittings are expensive in terms of the precision of the mold when molding the container, but the fitting strength of the fitting portion is strong, so that the supporting container and the lid do not fall even if some impact is applied. It is a luxurious fit shape.

The packaging container has a hole. This hole needs to be a passage through which gas can enter and exit the inside and outside of the packaging container in which the supporting container and the lid are sealed, which is different from the gap between the supporting container and the lid, which is a conventional gas replacement method using the chamber. The size, shape, number, and the like of the gas may be allowed to enter and exit the inside and outside of the packaging container, but the one provided in the lid is preferable from the viewpoint of ease of blocking the hole after gas replacement and prevention of leakage of contents. Preferably it is the ceiling surface of the lid.

It is preferable that the opening area of a hole is 0.3-3 cm <2> with respect to 1000 cm <3> of contents of a packaging container.

The opening shape of a hole should just be able to let in and out of a packaging container. For example, as an opening shape of a hole, a square (A in FIG. 8), a rectangle (B in FIG. 8), a square having a corner portion R (C in FIG. 8), a polygon (D in FIG. 8), a circle (FIG. 8E), semicircle (F in Fig. 8), ellipse (G in Fig. 8), semi-ellipse (H in Fig. 8), star shape (I in Fig. 8), irregular shape (J in Fig. 8) In addition to having a cutting shape to have, the shape which is not completely cut out is an inverted letter (O in FIG. 8), a V letter (P in FIG. 8), a U letter (Q in FIG. 8), and a C letter (in FIG. 8). R), incision of irregular shape (S of FIG. 8), etc. can be mentioned, for example, Since the chips which were cut out at the time of punching a cover do not come out, these cut-out shapes are more preferable.

In the case of such an incision, the area of the hole is indicated by the maximum area that is opened when the tongue which entered the incision is folded and the hole is expanded. Although the opening area of the hole varies depending on the content, but if the opening area of the hole is less than 0.3 cm 2 with respect to 1000 cm 3 of packaging container, a large amount of gas is packed in a short time when degassing inside the chamber or filling a desired gas into the packing container. Since the inside and outside are moved, the resistance at the time of passing through the hole of air and desired gas from inside and outside of the packaging container becomes large, and the resistance may generate | occur | produce an air pressure difference inside and outside of a packaging container, and a packaging container may be deformed.

In addition, if the opening area of the hole exceeds 3 cm 2, degassing and gas replacement can be easily performed, but the area of the adhesive label that blocks the hole also needs to be increased, resulting in poor appearance of the packaging container or adhesion across the hole. The mechanical strength of the opening of the adhesive label may be insufficient. Therefore, the opening area of a preferable hole is 0.3-3 cm <2>, More preferably, it is 0.4-2.8 cm <2>, More preferably, it is 0.6-2.5 cm <2>.

In addition, it is preferable that the number of holes can be prevented when the smallest possible number of holes is blocked, and can be closed with one adhesive label if possible from the viewpoint of the appearance beauty of the packaging container. However, even in the case of a large number of holes, it is more preferable because a small hole can be closed by concentrating one hole with one adhesive label, and the mechanical strength of the adhesive label portion is excellent.

Usually, a hole is manufactured by the process different from shaping | molding, and the example is shown. First, the plastic sheet is heated and melted to be molded in accordance with the molding die, and the sheet-like article to which the molding member is connected is pressed out with a cutting blade called a removal die.

Various methods, such as a method of sticking an adhesive label and a method of filling a hole, can be considered as a method of blocking the hole, but it is preferable to block the adhesive label from the viewpoint of appearance and simplicity of the container. More preferably, the adhesive label may be printed or the like to differentiate the product. The material etc. of an adhesive label are mentioned later.

EMBODIMENT OF THE INVENTION Hereinafter, this invention is demonstrated in detail using drawing. ·

Fig. 1 shows a perspective view of one embodiment of a packaging container of the present invention. In the figure, reference numeral 10 denotes a support container, 11 and 21 flange portions, 12 and 22 horizontal portions, 13 and 23 vertical portions, 14 and 24 corner portions, 15 concave portions, 20 a cover, 40 holes, 50 is an adhesive label.

The packaging container consists of a support container 10 and a cover 20, the support container 10 has a flange portion 11 in the opening and the cover 20 is a flange portion 21 is superimposed on the flange portion 11 Has Fig. 2 is a perspective view showing a state in which a packaged object is accommodated in the supporting container 10 of the packaging container, and the lid 20 is covered to seal the vertical portion with a strip-shaped tape. In the figure, reference numeral 30 denotes a strip-shaped tape, 40 denotes a hole, and 50 denotes an adhesive label.

The flange portion 11 of the supporting container 10 has a horizontal portion 12 projecting in the horizontal direction from the periphery of the opening of the supporting container 10, and a vertical portion extending in the vertical direction from the distal end of the horizontal portion 12 ( 13, the flange portion 21 has a horizontal portion 22 and a vertical portion 23 corresponding to the flange portion 11. Moreover, in the supporting container, the recessed part 15 in which the vertical part 13 was recessed inward and the horizontal part 12 was recessed in one part of the edge part 14 is formed, respectively. When the same recess is provided in the cover, the vertical portion 23 is inward and the horizontal portion 22 is recessed upward in the corner portion 24 formed by the horizontal portion 22 and the vertical portion 23. It may be formed so as to dig. Since the recessed part 15 is provided in order to improve the rigidity of the flange part 11, it is good to provide it in the part other than the edge part of a flange part, You may provide it in the corner part of a flange part as needed. In addition, the number of the recessed parts 15 is not specifically limited.

3A and 3B show examples of the flange portions 11 and 12, and FIG. 3A is a partial enlarged view of the AA 'direction cross section of FIG. 1, and the vertical portions 13 and 23 are horizontal portions 12 and 22. FIG. It extends vertically downward from the distal end of the). In the said structure, the vertical part 13 of the support container 10 located inside is formed longer than the vertical part 23 of the lid | cover 20. As shown in FIG. 3B is an example in which the inner and outer fittings described above are provided as the example of FIG. 3A, and the convex tank 17 parallel to the periphery of the opening in the horizontal portions 12 and 22 of the supporting container 10 and the lid 20 is shown. And the flange portions 11 and 22 are strengthened by forming the groove portion 27 fitted thereto.

4A and 4B are enlarged views of the flange portion 11 of the support container 10 of FIG. Fig. 4A is a plan view of the flange portion (horizontal top view), and Fig. 4B is a front view of the flange portion (front view of the vertical portion). The dotted line in the front view of Fig. 4B indicates a portion where the vertical portions of the lid overlap.

The size of the concave portion 15 depends on the size and strength of the flange portion 11, but when used as a packaging container for food, the horizontal portion 12 and the vertical portion as shown in Figs. 4A and 4B. What is necessary is just to make it rectangular in (13). In this case, the width W of the concave portion 15 is 1 to 20 mm, the distance S between the adjacent concave portions 15 is 3 to 20 mm, and the depth from the vertical portion 13 is the horizontal portion 12. It is preferable to set so that the space | interval d left in the width | variety (D) of (1) is 1 mm or more and becomes 1/5-4/5 of D. In addition, the depth T from the horizontal part 12 is 0.5 mm or more in the clearance | interval t with the position of the distal end part of the vertical part 23 of the flange part 21 of the cover 20 shown by the dotted line in a figure. It is set to 1/2 or less of the width H of the vertical portion 13. Moreover, the relationship between the width | variety H and the depth T of the perpendicular | vertical part 13 is set so that (H-T) may leave the width | variety to which a strip | belt-shaped tape can be fully attached. In addition, when providing the recessed part 15 in the flange part 21 of the cover 20, what is necessary is just to replace the flange part 11 by code | symbol 21 in the said setting.

As the shape of the concave portion 15, as shown in Figs. 1, 4A and 4B, in addition to the rectangular shape in the horizontal portion 12 and the vertical portion 13, as shown in Fig. 5A, the horizontal portion ( 12) may be a triangular shape, a semicircle or a semi-ellipse as shown in Fig. 5B, or a trapezoidal shape as shown in Fig. 5C. In the case of Fig. 5A, the angle θ of the vertex angle in the horizontal portion 12 is preferably 20 to 150 °, and in the case of Fig. 5C, the width w of the upper side is preferably 1 to 18 mm. . In any case, the depth from the vertical portion 13 is set so that the gap d left in the width D of the horizontal portion 12 is 1 mm or more and is 1/5 to 4/5 of D. desirable. In addition, the width W in the vertical part 13, the distance S between the adjacent recessed parts 15, and the depth from the horizontal part 12 are the same as that of the rectangle of FIG. 4A.

In the packaging container, in order to prevent the lid 20 from flowing down from the container 10, a convex portion protruding from one side of the flange portion 11, 21 of the supporting container 10 and the lid 20 to the other side, You may provide the recessed part which supports the said one convex part in the other side.

Fig. 6 is an application example of the supporting container of Figs. 3A and 3B, and has a step 81 protruding outward from the distal end of the vertical portion 23 located outside of the vertical portion 13 located inside. The reinforcing surface 82 which protrudes outward from the vertical part 13 distal end located further in the horizontal direction is formed. FIG. 7 shows a partial plan view of the flange portion of the support container of FIG. 6. FIG. The width p1 of the step 81 is preferably within the thickness ± 2 mm of the vertical portion 13 of the flange portion 11 of the lid 20, and is provided with a strip-shaped tape by providing the step 81. By doing so, the step formed on the tape surface by the outer end of the vertical portion 23 is alleviated to improve the appearance beauty. In addition, the position of the step 81 is preferably closer to the vertical portion 23 of the lid 20, and preferably within 2 mm from the distal end of the vertical portion 23. In addition, the width p2 of the reinforcing surface 82 is insufficient in the stiffness improving effect when it is less than 0.5 mm, and when it exceeds 2 mm, since the external appearance falls, Preferably it is provided in the range of 1-2 mm.

When the support container and cover of this invention consist of a thermoplastic resin, it is preferable to shape | mold the previously produced resin sheet by the well-known thermoforming method (pressure molding, vacuum molding, vacuum pressure molding, etc.).

In the case of forming the container and the lid into a resin sheet, the resin used may be any resin so long as it is generally used in the container or lid. For example, the thermoplastic resin includes polyethylene resin, polypropylene resin, polystyrene resin, methacryl resin, polyvinyl chloride resin, polycarbonate resin, cellulose acetate resin, and the like. Amide resins, polyethylene terephthalate resins, polybutylene terephthalate resins, ethylene-vinyl alcohol copolymer resins (EVOH and the like) and the like. The supporting container and the cover are made of a sheet having a single layer or a multilayer structure composed of these resins. Moreover, in the case of a multilayer structure, although there exist a coextrusion method, various lamination | stacking methods, etc. as a method of making into a multilayer, what is necessary is just to select suitably.

As a sheet used for this invention, you may use the material which has a gas barrier property as needed.

The strip | belt-shaped tape mentioned in this invention is demonstrated. The strip-shaped tape as used in the present invention is a shape that has a width and a long extension, and can seal the packaging container by bonding the flange surfaces extending from the supporting container and the lid. In the case where the tape-shaped tape is in contact with the container, an adhesive exists, and if the supporting container and the lid can be sealed (sealed) through the adhesive, the width of the tape may be constant, and the width of the tape may be constant. There may be a part.

In addition, although the single-layered or multilayered structure which consists of paper, a metal thin film, resin, etc. is mentioned as a material of a strip | belt-shaped tape, in a microwave oven heating, a metal thin film, metal deposition, etc. are mentioned from a viewpoint of the spark prevention by the collision of electrons. The material which does not contain a metal is preferable, and it is more preferable that it is the same material as a container from a viewpoint of fractionation collection | recovery. Moreover, it is more preferable that it is a gas barrier resin from the objective of preventing dispersal of the gas from the clearance gap between a lid and a support container.

As a gas barrier strip | belt-shaped tape, what consists of two layers of a gas barrier base member layer and an adhesive bond layer is mentioned, for example.

As the gas barrier base member layer, for example, one provided with a gas barrier resin or an inorganic layer having an inorganic substance in a layered form can be used. As an example of the resin layer which has an inorganic substance layered, the thing which provided gas barrier property by the vapor deposition process of the inorganic substance of silica and / or alumina to the low-density polyethylene resin layer lacking gas barrier property can be considered.

The gas barrier base member layer has a carbon dioxide gas permeation amount of 1.0 to 4935.0 ml / m 2 / day / MPa, an oxygen gas permeation amount of 1.0 to 3948.0 ml / m 2 / day / MPa, and a nitrogen gas permeation amount of 1.0 to 1480.5 ml / m 2 / day / MPa It is preferable to have, and more preferably the carbon dioxide gas permeation amount is 10.0 to 4500.0 ml / m 2 / day / MPa, the oxygen gas permeation amount is 10.0 to 2500.0 ml / m 2 / day / MPa, and the nitrogen gas permeation amount is 10.0 to 1300.0 ml / m 2. / day / MPa, More preferably, the carbon dioxide gas permeation amount is 20.0 to 4000.0 ml / day / MPa, the oxygen gas permeation amount is 20.0 to 1300.0 ml / m 2 / day / MPa, and the nitrogen gas permeation amount is 20.0 to 1000.0 ml / M 2 / day / MPa. More preferably, the carbon dioxide gas permeation amount is 20.0 to 1000.0 ml / m 2 / day / MPa, the oxygen gas permeation amount is 20.0 to 300.0 ml / m 2 / day / MPa, and the nitrogen gas permeation amount is 20.0 to 250.0 ml / m 2 / day / MPa To have.

In addition, the gas barrier base member layer resin preferably has an oxygen gas permeation amount of 1.0 to 1974.0 ml / m 2 / day / MPa. Examples of such resins include polyolefin resins including polyethylene resins (HDPE, LLDPE, etc.), polypropylene resins (PP), polybutene-1 resins (PB), and poly-4-methylpentene-1 resins. (PO) or polyolefin resin modified products including ethylene-vinyl acetate copolymer resin (EVA), ethylene-methyl methacrylate copolymer resin (EMA, etc.), and ethylene-vinyl alcohol copolymer resin (EVOH, etc.) PO modified materials), polyethylene terephthalate-based (modified) resin (PET, etc.), polybutylene terephthalate-based (modified) resin (PBT), and some of the aromatic components, or polylactic acid Aliphatic polyester resins (PEST), polyvinylidene chloride resins (PVDC), chlorine resins including polyvinyl chloride resins (PVC), αolefin-carbon monoxide copolymer resins Ham-dong Resin], [alpha] olefin (other than ethylene)-styrene copolymer resin (Hydrous addition resin), ethylene-cyclic hydrocarbon-type compound copolymer resin (Hydraulic addition resin), polyamide resin (Ny), caprolactone resin Single layer or these multilayers or what laminated | stacked this resin and another resin, or the stretched or unstretched tape which consists of these resins is mentioned, for example, heat resistance and gas Polyethylene-based resin (especially HDPE), polypropylene-based resin (PP), ethylene-vinyl alcohol-based copolymer resin (EVOH, etc.), polyamide-based resin (Ny), polyethylene terephthalate-based (modified) resin (PET, etc.), polybutylene terephthalate-based (modified) resin (PBT, etc.) containing some aromatic components, or polylactic acid-based resin, polyglycolic acid-based water Such as a polyester-based resin (PEST) of other aliphatic components are preferred. In addition, known additives such as antioxidants, light stabilizers, antistatic agents, antifogging agents, coloring agents, lubricants, and the like may be mixed within the range not impairing the effects of the present invention, or known surface treatments, For example, vinylidene chloride or the like may be subjected to a gas barrier coating process such as corona discharge treatment, flame treatment, irradiation treatment including electrons and plasma, ion etching treatment, and the like.

The thickness of the gas barrier base member layer depends on the oxygen gas permeation amount of the resin to be used, and it is preferable to ensure the thickness of the above-described oxygen gas permeation amount of 1.0 to 1974.0 ml / m 2 / day / MPa. For example, in the case of ethylene-vinyl alcohol-based copolymer resin (EVOH) having a low oxygen gas permeation amount, it is possible to achieve an oxygen gas permeation amount at about several micrometers from the viewpoint of the oxygen gas permeation amount, but the viscosity as a strip tape is insufficient. Therefore, what is necessary is just to laminate | stack with resin which has another viscosity. As such resin, polypropylene resin (PP) is mentioned, for example. In the case of the gas barrier base member layer, which is a laminated structure of PP and EVOH, the oxygen gas permeation amount is preferably 1.0 to 1974.0 ml / m 2 / day / MPa, and the thickness of the gas barrier base member layer is 15 from the viewpoint of the viscosity of the band tape. To 100 μm is preferred. More preferably, it is 20-90 micrometers, More preferably, it is 25-85 micrometers.

Bonding as used in the present invention means joining a strip | belt-shaped tape, a support container, and a cover. Although adhesive strength can be selected suitably, the typical adhesive agent is a solvent type, a hot melt type, a reactive type, etc., but if it has adhesiveness, it does not interfere, and if a packaged food is an adhesive suitable for food hygiene methods It is preferable to use. For example, the resin composition chosen mainly from rubber adhesives, acrylic adhesives, vinyl ether adhesives, silicone adhesives, and at least 1 type from these is mentioned. Preferably, it is a rubber adhesive agent, an acrylic adhesive agent, a vinyl ether adhesive agent, More preferably, a rubber adhesive agent and an acrylic adhesive agent from a viewpoint that it is easy to set a desired adhesive strength. In addition, acrylic adhesives are even more preferable from the viewpoint of less solvent extract and less impurities.

Moreover, these adhesive agents may contain well-known additives, for example, antioxidant, a light stabilizer, an antistatic agent, an antifog additive, a coloring agent, etc. within the range which does not impair the effect of this invention. In addition, silicone having a peeling effect is printed on the gas barrier base member layer in advance so as to intentionally cause partial peeling between the gas barrier base member layer and the adhesive layer of the adhesive label for gas substitution packaging sealing, and the adhesive layer is gas barriered. You may equip so-called false alteration printing which peels from a base member layer and remains in the support container and lid which are to-be-adhered bodies.

As a rubber adhesive, For example, natural rubber which has cis-1, 4- polyisoprene as a main component, synthetic rubber which has styrene butadiene rubber (SBR), polyisobutylene, butyl rubber, etc. as a main component, or styrene butadiene At least one adhesive elastomer selected from styrene copolymer rubber (SBS), styrene isobuene, styrene copolymer rubber (SIS), and the like as a block rubber, etc., at least one of several hundred to about 10,000 molecular weight in liquid or solid at room temperature Adhesion agents such as rosin-based resins, terpene-based resins, petroleum resins, and Cloman-indene resins, which are thermoplastic resins of amorphous oligomers (dimer or higher molecular weight polymers), and mineral oils, liquid polybutenes, liquid polyisobutylenes, The thing which mix | blended softeners, such as liquid polyacrylic acid ester, is mentioned.

As an acrylic adhesive, for example, the main monomer which provides adhesiveness typified by the acrylic acid alkyl ester which is a homopolymer with low Tg low, the acrylic acid ester of a lower alkyl group, the alkyl ester of methacrylic acid, vinyl acetate, styrene, acrylonitrile etc. Of the functional group-containing monomer which is copolymerizable with the monomer and imparts cohesiveness to increase Tg, and imparts adhesion of carboxyl group-containing monomers such as acrylic acid and methacrylic acid (acrylate, etc.), hydroxyl groups, epoxy groups, amino groups What mix | blends the said tackifier, a softener, etc. with an adhesive reactant depending on a case is mentioned in some cases.

As a vinyl ether adhesive, it is a homopolymer, such as vinyl methyl ether, vinyl ethyl ether, and vinyl isobutyl ether, or a copolymer (adhesive elastomer) with an acrylate, for example, the said tackifier, a softener, etc. The compound which mix | blended is mentioned.

As a silicone adhesive, For example, the polymer (or adhesive elastomer) which has a residual silanol group (SiOH) in the terminal part of the polymer chain represented by high molecular weight polydimethylsiloxane or polydimethyldiphenylsiloxane, the said tackifier, the softener, etc. There is a combination.

In view of gas barrier properties, in particular, gas-substituted packaging, the adhesive strength can be set widely, and from the viewpoint of food hygiene, synthetic rubber and acrylic adhesives are preferred.

It is preferable that it is 0.1-15 N / cm in the measuring method by 180 degree peeling method of JIS-Z-0237 from a viewpoint of the adhesive strength at the time of adhesion, and the peeling strength at the time of peeling. More preferably, it is 0.2-13 N / cm, More preferably, it is 0.3-12 N / cm.

Although the thickness of an adhesive bond layer depends on the adhesive agent used, adhesive strength should just be 0.1-15 N / cm, and does not depend on the thickness of an adhesive bond layer. For example, in the case of a rubber adhesive and an acrylic adhesive, the thickness of an adhesive bond layer is preferable from 3 to 70 micrometers from a viewpoint of adhesive strength. More preferably, it is 5-60 micrometers, More preferably, it is 8-55 micrometers.

Moreover, it is preferable that a strip | belt-shaped tape has a certain intensity | strength and elongation from the viewpoint of the mechanical aptitude at the time of sticking a tape by a machine. In the measurement based on the adhesive tape test method of JIS-Z-0237, it is preferable that tensile strength is 10-120 N / 10mm, More preferably, it is 20-110 N / 10mm, More preferably, 25 to 95 N / 10 mm. Moreover, in order to adhere | attach a strip | belt-shaped tape neatly without making gas dissipation site | parts (gap), such as a wrinkle, in the corner part of a support container and a cover, it is preferable that the strip | belt-shaped tape itself has flexibility. In the elasticity measurement which measured the strip | belt-shaped tape (10 mm width) of length 100mm on the conditions of 5 mm / min of tensile velocity, from 3 to 150 kg / mm <2> from a viewpoint of the sticking state of a strip | belt-shaped tape to a support container and a lid | cover. More preferably, it is 5-130 kg / mm <2>, More preferably, it is 7-110 kg / mm <2>.

In addition, in the case where the tape is attached to the container, when the entire circumference is sealed by the tape, the sealing can be realized by overlapping with the tape of the first winding at the beginning (Fig. 15C), but the overlapped tape is wound. When overlapping a start part, a small gap may arise in the width direction of a strip | belt-shaped tape by the thickness of the strip | belt-shaped tape of a winding start. In order to fill this gap, a sealing tape may be improved by rubbing a strip | belt-shaped tape with a spatula etc. or making it coat | cover with hot melt agent and various gas barrier films on the strip | belt-shaped tape.

Ease of opening may be provided to the belt-shaped tape 30. For example, a part where the width | variety of the strip | belt-shaped tape, such as intentionally cutting in, is made into a part of strip | belt-shaped tape is produced (FIGS. 16A-16C). Upon opening, a strip of tape breaks at the portion. Or the so-called cut tape 60 of a string type is provided in the width center part of a strip | belt-shaped tape in parallel with the longitudinal direction of a tape (FIG. 17A and 17B). At the time of opening, the center part of the strip | belt-shaped tape which seals between the container and the flange part of a cover is torn in two by the cut tape 60 (the upper and lower ends to which the strip | belt-shaped tape were torn are affixed to the supporting container and the cover). The containers are simply opened by these.

An adhesive label is demonstrated. The adhesive label preferably includes a gas barrier material. The opening is closed with this label to seal off the desired gas in the packaging container. Therefore, it is necessary for the adhesive label to have a property of being in close contact with the supporting container or the lid. The adhesive label may be provided with a property of being in close contact, and may be in close contact, in adhesion or in adhesion.

The adhesive strength of the adhesive label may be appropriately selected, and the type and application amount of the adhesive may be selected according to the desired adhesive strength. As a typical adhesive agent, the same thing as what was used with the above-mentioned strip | belt-shaped tape can be used, but when using it for the heating cooking application in a microwave oven, from a viewpoint of preventing the rupture accompanying the internal pressure rise of packaging containers, such as water vapor by microwave heating, More preferably, an adhesive label using an aqueous solvent, an organic solvent type, or a hot melt type adhesive having a tendency to increase in temperature in the packaging container and weaken adhesive strength. Furthermore, it is more preferable that they are food hygienically safe aqueous, organic solvent type, and hot melt type adhesives. In addition, the shape of the adhesive label is not impeded as long as the hole can be blocked regardless of the opening shape of the hole. For example, a square (A in FIG. 8), a rectangle (B in FIG. 8), a square having a corner portion R (C in FIG. 8), a polygon (D in FIG. 8), a circle (E in FIG. 8), Semicircle (F in FIG. 8), ellipse (G in FIG. 8), semi-ellipse (H in FIG. 8), star shape (I in FIG. 8), indefinite shape (J in FIG. 8), circle with other handle parts ( 8), a rectangle (L in FIG. 8), an ellipse (M in FIG. 8), a square (M in FIG. 8), and the like, and in the case of a cover formed of a resin sheet, irregularities are formed around the hole. It is also possible to devise, for example, to increase the rigidity of the cover when bonding the adhesive label to produce the adhesive label.

In addition, although the single-layer or multilayer structure which consists of paper, a metal thin film, resin, etc. is mentioned as a material of an adhesive label, a metal thin film, metal deposition, etc. are mentioned from the viewpoint of the spark prevention by the collision of electrons at the time of microwave heating. The material which does not contain the metal of is preferable, and it is more preferable that it is the same material as a container from a viewpoint of fractionation collection | recovery. Moreover, it is more preferable that it is a gas barrier resin from a viewpoint of gas dispersion prevention.

In addition, about the material, structure, thickness, the performance, etc. which have gas barrier property, the thing similar to what was demonstrated by the term of a strip | belt-shaped tape may be used.

The adhesive strength of the adhesive tape was measured by a 180 degree peeling method at 25 ° C. of JISZ-0237 (180 degree peeling method of JIS Z-0237: attaching a tape having a width of 25 mm to a stainless plate, Adhesive strength at the time of adhesion | attachment in 0.1 to 10 N / cm in one end part of the other side was measured and used the force required to peel 180 degree direction from a test board at the peeling speed 300 m / min toward the other end part. And it is preferable from a viewpoint of the peeling strength at the time of peeling. More preferably, it is 0.2-9.5 N / cm, More preferably, it is 0.3-7.5 N / cm. Moreover, it is preferable that the measured value by the 180 degree peeling method in 80 degreeC is lower than the measured value by the 180 degree peeling method in 25 degreeC from a viewpoint of an adhesive label peeling off automatically by the internal pressure rise of a packaging container. It is preferable that the measured value by the 180 degree peeling method in 25 degreeC is 0.1-8 N / cm from a viewpoint of the adhesive strength at the time of adhesion, and the peeling strength at the time of peeling. More preferably, it is 0.2-7.5 N / cm, More preferably, it is 0.3-5.5 N / cm.

Although the thickness of an adhesive bond layer depends on the adhesive agent used, in the measuring method by the 180 degree peeling method in 25 degreeC, adhesive strength should just be 0.1-10 N / cm, and does not depend on the thickness of an adhesive bond layer. For example, in the case of rubber-based and acrylic adhesives, the thickness of the adhesive layer is preferably 2 to 10 µm from the viewpoint of the adhesive strength. More preferably, it is 3-90 micrometers, More preferably, it is 5-85 micrometers.

In addition, it is preferable that the gas barrier adhesive label has a certain level of strength from the viewpoint of preventing breakage due to puncture from the outside. In the measurement based on Article 10 of the Agriculture and Forestry Standard, it is preferable that a puncture intensity | strength is 2.0 N or more, More preferably, it is 2.5 N or more, More preferably, it is 3.0 N or more. Moreover, you may provide a handle | sticker to an adhesive label, and may provide easy opening. For example, it is more preferable to provide a semi-circular handle to the adhesive label and to provide easy opening such as opening simply by pulling up the handle from the lid to prevent rupture during heating of the packaging container.

The contents accommodated in the packaging container are mainly foods that have been heated and cooked. For example, side dishes (simmered, grilled, steamed, fried) and lunch boxes sold in supermarkets and convenience stores may be used. Food for the purpose is mentioned.

Hereinafter, the packaging method of the present invention will be described.

In the present invention, degassing and gas replacement are performed in the chamber using the hole 40, and the gas in the space portion and the contents in the packaging container is replaced with the desired gas by using a gas displacement sealing method that closes the hole after gas replacement. In other words, by degassing the chamber with an inert gas, degassing and gas replacement are also performed in the packaging container via a hole provided in the packaging container. By degassing and replacing gas in the chamber, there is almost no pressure difference between the packaging container and the chamber (outside the packaging container), so that the packaging container can be prevented from being crushed due to the pressure difference.

The gas replacement means replacing the air in the container with a desired gas, and examples thereof include an effect of improving the preservation of the contents and preventing the color change of the product. It is effective in preventing oxidation of fats and oils, ② preservation of active ingredients such as vitamins, ③ prevention of decay due to the growth of mold, fungus and yeast, ④ prevention of discoloration and discoloration of pigment, and ⑤ prevention of scattering of fragrance. . In addition, the preservation of the contents may be further improved by substituting with a gas having a bactericidal action such as carbon dioxide gas.

The gas used in the present invention may be any gas as long as it is a generally known gas. For example, nitrogen, carbon dioxide (carbonic acid gas), oxygen, argon, etc. can be mentioned, It can use individually or in combination. In addition, ozone or natural and synthetic antimicrobial substances (for example, cypress thiol, etc.) generally known for actively sterilizing fungi, fungi and yeasts may be used.

As a method of performing degassing and gas substitution in a chamber, the chamber type gas substitution method generally said can be used. Generally as a gas substitution method, a chamber type, a gas flash type, etc. are mentioned. 9 shows a chamber gas displacement method of the present invention. The chamber-type gas replacement method of the present invention includes a support container 10 and a lid 20 (hole 40) sealed with a band-shaped tape 30 in a space called a chamber (70 in FIG. 9). In the chamber, the container is placed, the entire air inside the chamber is degassed once in a vacuum state (Fig. 9 (b)), and the desired gas is fed into the chamber in the vacuum state and gas replacement is performed. The adhesive label 50 is attached to the hole 40 of the lid 20 to seal the space in the container (Fig. 9 (c)).

In general, the chamber gas substitution method is characterized in that the gas substitution rate is high, so that the gas substitution can be reliably performed. The gas flash gas replacement method is a simple and inexpensive method, but the gas substitution rate tends to be low. The gas replacement method according to the present invention is a chamber gas replacement method of the above-described gas replacement method, and the gas replacement method reliably performs gas replacement of air in the space portion and the contents of the packaging container, thereby improving the preservation of the contents and preventing the color change of the product. Therefore, the packaging container can be replaced with a high substitution rate.

An example of the sealing method of sealing with a strip | belt-shaped tape using the container which consists of a support container and a cover of this invention is demonstrated using drawing. It is a process (FIG. 13) which uses the rectangular container (FIG. 10) and the cover (FIG. 11) to overlap the edge part of a container and a cover (FIG. 12), and seals the edge part with a strip | belt-shaped tape (FIG. 13). Fig. 13 is a perspective view showing a state in which the supporting container and the cover-covered corners are sealed in a clockwise direction using a strip-shaped tape, and FIG. 14 is a sealing of the support container and the cover-covered corners using a strip-shaped tape. It is a perspective view which shows the completed state. The adhesive direction of the strip | belt-shaped tape does not interfere as long as it seals clockwise as shown, or it can seal by sealing the edge part which the supporting container and the cover were covered with strip | belt-shaped tape even in the counterclockwise direction. In this way, since the supporting container and the lid are sealed by the band-shaped tape, even when the shape of the container and the lid is varied, the band-shaped tape can be sealed and sealed by using the band-shaped tape, indicating that it is an excellent sealing method.

An example of ease of opening will be described with reference to Figs. 15A to 17B. 15A to 17B show a process of overlapping only the corners of a rectangular support container and a cover, and sealing the support container and the cover by sealing them with an adhesive tape. In the strip-shaped tape used in Figs. 15A to 17B, easy-opening pores are applied to the bonding method to obtain easy opening and to the strip-shaped tape itself.

15A to 17B will be described in detail. Fig. 15A is a perspective view showing a sealed state in which the rectangular base container and the overlapped corners are sealed with a banded tape in a clockwise direction, and the last end of the banded tape is not sealed to the base container and the lid, and Fig. 15B is a container and It is a perspective view which shows the state in the middle of the edge part of the strip | belt-shaped tape which is not adhere | attached to a cover by pulling. Fig. 15C is a schematic view of the state in which the end portions of the strip-shaped tape of Fig. 15A are stacked from above. As a method of not providing adhesiveness only to the last end portion as described above, a method is used in which the adhesive is not applied only to the overlapping portion by measuring the dimension in the circumferential direction of the container in advance, or using the one that gives adhesiveness to the entire surface of the strip-shaped tape. Although there is a method of bonding only the end portions of the adhesive surfaces to each other, a method of joining the adhesive surfaces only of the last terminal portions is simple and more preferable. 16A to 16C are examples of the case where the side portion in the longitudinal direction of the strip-shaped tape is cut using the same support container and lid as in FIGS. 15A to 15C. As shown in Figs. 15A to 15C, Fig. 16A is a perspective view showing a state where sealing is completed by using a tape-cut tape which has been cut, and Fig. 16B shows that the distal end portion of the tape-shaped tape is cut and opened by cutting a tensile tape-shaped tape. It is a perspective view which shows the state on the way. Fig. 16C is a schematic view of the distal end of the band-shaped tape of Fig. 16A viewed from above. Thus, by pulling the last end part, the strip | belt-shaped tape can be cut | disconnected easily from the incision near the end part of a strip | belt-shaped tape, and it can open easily. In addition, although a part of the side part of a strip | belt-shaped tape may be cut | disconnected like FIG. 16A-FIG. 16C, the strip | belt-shaped tape may be cut | disconnected when it tensions even if it is performed to the whole side part of a strip | belt-shaped tape or both side parts. 17A and 17B show an example in which a cut tape is provided parallel to the longitudinal direction of the belt-shaped tape in the center portion of the width of the belt-shaped tape by using the same support container and lid as in FIGS. 15A to 15C. Similarly to Figs. 15A to 15C, Fig. 17A is a perspective view showing a state where sealing is completed using a band-shaped tape on which the cut tape 60 is applied in parallel to the longitudinal direction, and Fig. 17B is a cut tape parallel to the longitudinal direction. The end portion of the cut tape of the belt-shaped tape is pulled, and the center portion of the tape-shaped tape is torn into two pieces by the cut tape (the end of the tape-shaped tape is stuck to the supporting container and the lid), showing the state in the middle of opening the container. Perspective view. A method of providing a cut tape parallel to the longitudinal direction of the tape in the width center of the belt-shaped tape, and tearing the center of the belt-shaped tape sealing between the supporting container and the edge of the lid with two pieces of cut tapes and simply opening the container. It is more preferable from a viewpoint of the ease of opening. The color of the cut tape and the color of the band-shaped tape may be changed to make it easier to understand.

Hereinafter, a measuring method and an Example are demonstrated in detail.

(1) oxygen gas permeation measurement

It measured according to ASTM-D-3985 (measurement temperature 23 degreeC).

(2) Measurement of the oxygen composition ratio of the space in the container

The oxygen composition ratio (%) of the space in a container at 23 degreeC and 50% RH was measured using the checkpoint made from PBI Dansensor.

G (good): The oxygen composition ratio in a container after 10 days is less than 1%.

M (moderate): The oxygen composition ratio in a container after 10 days is 1% or more and less than 2%.

P (poor): The oxygen composition ratio in a container after 10 days is 2% or more.

(3) hamburg production

Mix beef and pork and mince (cow: pork = 5: 5) 1 kg and 2 medium eggs, chilled to below 5 ° C, mix well until sticky, 0.3 kg of fried onions and 0.12 kg of breadcrumbs Add again and mix again. 120 g per piece was molded into an oval shape, put into an oven at 120 ° C., and heated and cooked until a central temperature of 70 ° C. was produced.

(4) storage temperature measurement

The temperature of every 10 minutes was measured using the button type cool memory by a Sanyo Denki Corporation. After heating and cooking finished food, it was preserve | saved in the open showcase EA-MS by Mitsubishi Denki Kabushiki Kaisha, Inc. (preservation temperature 15 degreeC).

(5) General viable cell count

A 10-fold step dilution was carried out sequentially with 1 g of hamburg, and the diluted sample liquid was prepared. Two deep chalets were prepared for the same dilution step, and each dilution sample solution was divided into 1 ml and injected. After autoclaving in advance, 15 ml of standard agar medium maintained at about 45 ° C. was aseptically injected into each chalet, immediately mixed with the diluted sample solution and the medium to be well mixed, and left to stand until the medium was completely solidified. . After diluting the sample liquid into the chalet and injecting it into the medium, it is completed within 20 minutes, and when the medium is solidified, the chalet is inverted and the surface of the medium is dried in the incubator for 30 minutes. Time was performed. Thereafter, the growth colonies of the flat plates in which 30 to 300 developments were confirmed per plate was measured, and the number of colonies of the two plates was averaged and multiplied by the dilution factor to calculate the viable cell count of 1 g of food.

(Examples 1 to 6)

A polypropylene resin sheet containing a filler as a support container and a non-stretched multilayer film were bonded to a polystyrene resin sheet as a cover for bonding a polyurethane-based dry laminate with an adhesive to produce a multilayer resin sheet. Using these multilayer resin sheets, thermoforming was carried out in the shapes shown in Figs. 10 (vessels), 11 (lids), and 12 (Fig. 12). After forming a C-shaped hole having a diameter of 25 cm on the ceiling surface, the cover was produced by an intermediate fone before the molded article was taken out. The flange parts perpendicular | vertical of these receiving container and cover were sealed using the strip | belt-shaped tape shown in an Example. The container content was 800 cm 3. The container was vacuumed and replaced with a gas, and the inside of the packaging container was replaced with high purity nitrogen gas (purity 99.99%), and the C-shaped hole of the lid was replaced with a circular adhesive label shown in the Example having a diameter of 35 cm. After sealing, the gas composition inside the container was measured immediately after sealing and 1 day and 10 days after sealing. The conditions and results are shown in Table 1. In addition, hamburg was separately put into a container having a content of 800 cm 3 used in the container example as an example of a food, and vacuum gas replacement packaging was performed using various mixed gases (1: 1) of carbon dioxide and nitrogen. A plurality of samples thus adjusted were prepared, stored at various temperatures for one week, and the general viable count was measured for a while. General viability measurement was carried out by randomly selecting from a plurality of samples prepared under the same conditions. The conditions and results are shown in Table 1.

(First Comparative Example)

The same experiment as in Example was conducted except that a polypropylene resin sheet containing a filler was used for the supporting container and a polystyrene resin sheet was used for the lid. The conditions and results are shown in Table 1.

The present invention performs gas replacement after degassing in the chamber, so that the air in the space and the contents of the packaging container can be replaced with gas at a high substitution rate as compared with the gas replacement method of the gas flash system. In addition, since it can be sealed packaging without the need of a heat-shrinkable film, there are few packaging materials used, and the burden on the operator based on the container recycling method of those skilled in the art can be reduced. In addition, since the inside of the container can be sealed by sealing the edges of the base container and the lid with a band-shaped tape, the height of the base container and the edge of the lid is overlapped even when the shape and size of the container are changed when the device is packaged using the device. In addition, it is available only by adjusting the height of the strip-shaped tape and the like. In addition, there is no need to select the material of the plastic container, so opening is very easy.

Claims (10)

A container consisting of a supporting container and a lid, the supporting container and the lid being superimposed at each corner portion to cover the upper surface of the supporting container, the overlapping portion being sealed by a band-shaped tape, the container having a hole and passing through the hole. After degassing the air inside a container, it replaces with gas other than air, and closes a hole, The manufacturing method of the gas substitution packaging member characterized by the above-mentioned. The method for producing a gas displacement packaging member according to claim 1, wherein the container is made of plastic. The method for producing a gas substitution packing member according to claim 1 or 2, wherein the container, the strip-shaped tape, and the adhesive label have gas barrier properties. 4. An edge portion of the base container and the lid according to claim 1 or 3, comprising a horizontal portion protruding in a horizontal direction from an opening portion in a corner portion of the supporting container and a lid, a substantially vertical portion extending in a vertical direction from the horizontal end portion, and an edge portion present at these boundary portions. The vertical part of the part which has a flange part, and the vertical part of the side which overlaps inward among the said flange parts is longer than the vertical part of the side which overlaps outward, and has the step part, Sealing by adhering a strip | belt-shaped tape, The manufacturing method of the gas substitution packaging member characterized by the above-mentioned. The method for producing a gas substitution packing member according to claim 1 or 3, wherein the gas replacement hole is present in the upper surface of the lid. The manufacturing method of the gas substitution packaging member of Claim 1 or 3 WHEREIN: The perpendicular | vertical part of a flange part extends below a vertical part from a horizontal part. A corner portion of the base container and the lid has a flange portion consisting of a horizontal portion protruding in the horizontal direction from the opening portion and a substantially vertical surface extending in the vertical direction from the end portion of the horizontal portion, and a vertical portion of the flange portion overlapping inwardly. A packaging container, characterized in that it has a stepped portion at an inner vertical portion of a portion that is longer than the vertical portion overlapped to the outside and is in contact with the outer vertical portion distal end portion. 8. A packaging container for sealing according to claim 7, characterized in that it has a concave portion formed so that the vertical portion is recessed inward and the horizontal portion is recessed in the corner portion of the lid and / or the supporting container. The packaging container for sealing of Claim 7 or 8 which has the reinforcement surface which protrudes horizontally outward from the perpendicular | vertical end part of the side which overlaps inward. The packaging member obtained by the manufacturing method of the gas packaging member of any one of Claims 1-6.