JP2019194104A - Packaging container and manufacturing method thereof - Google Patents

Abstract

To provide a packaging container that can store a three-dimensional packaged item, put a lid with a three-dimensional shape, replace gas, fit the three-dimensional lid and tray without slipped off, and can be sealed securely, the packaging container thus being capable of storing a packaged item like a food that raises up from a horizontal flange surface of a tray, capable of creating an optimal environment for maintaining quality of the food being packaged by keeping an environment inside of the packaging container different from an environment outside of the packaging container, so that the packaged item can be prevented from quality deterioration to reach a consumer in a safe and secure state even being experienced various distribution and storage conditions, and capable of contributing to environmental issues from perspective of enabling reduction in food loss.SOLUTION: In a packaging container 1 composed of a tray 14 and a lid 2, a projecting piece 12 configured to be an engaging portion with a projecting body 31 is provided on a shorter side of the lid 2, and a lid/tray engaging portion 21 between a rising portion 16 of the tray 14 and a flange 17 of the tray 14 is provided between a rising portion 4 of the lid 2 and a flange 8 of the lid 2.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a packaging container and a manufacturing method thereof.

  In the food industry, it is essential to maintain the quality at the time of manufacture of food until the consumer consumes the purchased food. Packaging containers that allow food to be stored and distributed while being distributed are food hygiene aspects. It has important functions to deliver safety and security to consumers.

  Here, in the air, which is the external environment surrounding foods, gases such as water vapor, oxygen, nitrogen, carbon dioxide, argon, sulfur dioxide, carbon monoxide, ammonia, nitrogen dioxide, ozone, hydrocarbons, microorganisms, Dust etc. are also included.

  Among these inclusions in the air, there are those that change the color, taste and aroma of food and cause food to rot.

  Therefore, if the environment inside the packaging container is different from the environment outside the packaging container to create an optimal environment that can maintain the quality of the food that is the packaged product, it is possible to prevent alteration and prevent various distribution and storage conditions. Even after that, the packaged goods can reach the consumers in a safe and secure state, reduce food loss, and contribute to environmental problems.

  2. Description of the Related Art Conventionally, packaging using a tray sealer has been adopted as a technique for packaging an article to be packaged in a tray in order to maintain the quality of the article to be packaged.

  Here, as shown in FIG. 18, Patent Document 1 discloses an invention of a packaging container of a gas replacement package manufactured by covering with a tray sealer.

  Specifically, the gas replacement package 60 uses a seal pack gas replacement tray sealer to heat-seal the film 61 as a lid for the tray, has a high gas barrier property, and has a hermetic seal property and prevention against a food tray. A film 61 having both cloudiness and a wrap film is provided, and the film 61 has an aesthetic appearance and has a function of extending the shelf life of the packaged food 64.

  Furthermore, as shown in FIG. 19, Patent Document 2 discloses an invention of a tray sealer and a gas replacement package manufactured using the same.

  Specifically, the gas replacement packaging body heat-seals the film serving as a lid with the tray sealer 78, and the tray sealer 78 includes two sets of conveyors 70 and 71 in two lanes of the packaging system, respectively. 72 and 73, 74, 75. The plastic tray 80 containing the food is conveyed along the lane along the lane by the conveyor in the direction 79 and accumulated on the conveyors 71, 74, with each conveyor 71, 74 carrying five trays and a gripper arm (not shown). Is activated, and two sets of five trays are transferred into the heat sealing tool 82. They are placed in two rows on the base of the tool 84, and the plastic seal film 91 is supplied from the storage roll 90 and spaced laterally corresponding to each lane in the heat seal tool 82. Passing through two printers 92, 94 arranged side by side, they are fed onto a pick-up roller 96, and on the base 84 of the heat sealing tool 82, five individual heating plates (mounted in a support block 86 ( (Not shown) are arranged in two rows and once the unsealed tray 80 is placed in the heat sealing tool 82, the heating plate (attached in the upper support block 86) is moved to the support block 86. Is engaged with the tray 80 and the film 91 between the plate and the tray. Heat is applied to the plate and a correspondingly shaped portion of film 91 is cut from the web and heat sealed to each tray. After sealing, the support block 86 is raised and the gripper arm is activated to seal the sealed package to the tool 82. And the rest of the web of film 91 is then collected on a pick-up roller 96 to form a gas replacement package.

JP-A-2006-150449 (top seal lid material for gas replacement packaging) JP 2013-515654 A (food packaging process)

  However, the packaging container of the gas replacement package disclosed in the inventions of Patent Literature 1 and Patent Literature 2 heat-seals a film as a lid for the tray, and the lid film is an extension of the flange surface of the tray. Since it is flat on the top, it has a flat plate shape, and there remains a problem that it cannot be sealed by gas replacement after storing and covering a three-dimensional packaged object exceeding the rise of the tray.

  An object of the present invention is to provide a packaging container that can eliminate the inconveniences of the above-mentioned conventional examples, accommodate a packaged object, cover it with a three-dimensional shape, and replace it with gas to seal it.

  In order to achieve the above-mentioned object, the present invention according to claim 1 is a packaging container comprising a tray and a lid, wherein the lid is provided with a projecting piece to be engaged with a protrusion on a short side, The gist is that a lid / tray engaging portion between the rising portion of the tray and the flange of the tray is provided between the flange of the lid.

  According to the first aspect of the present invention, the lid is provided with a projecting piece serving as an engaging portion with the projection on the short side, and after the packaged object is sealed in the packaging container, the lid flange is formed by the projection. Supported by the upper side, the lid flange can be provided with an opening without overlapping the tray flange, and degassing and gas can be enclosed.

  Furthermore, by providing a lid / tray engaging portion between the rising portion of the tray and the flange between the rising portion of the lid and the flange, the lid flange is supported upward by the protrusions so that the inclined lid is supported. Without slipping or shifting, the lid and tray are fixed at the lid / tray engaging portion, and an opening necessary for deaeration and gas replacement can be provided.

  According to the second aspect of the present invention, the protrusion is a tube whose upper bottom surface is closed, and has an opening in the upper part of the side surface and an opening penetrating the die branching channel of the lower mold in the lower part. Is a summary.

  According to the second aspect of the present invention, the protrusion is a tube having an upper bottom surface closed, an opening in the upper part of the side surface, and a lower part provided with an opening penetrating the die branching channel of the lower mold. In addition to the function as a protrusion, it also has a function as a flow path from the mold branch flow path through the tubular protrusion to the upper opening on the side surface, facilitating deaeration and gas replacement in the packaging container. Is done.

  The gist of the present invention described in claim 3 is that the protrusion includes a spring.

  According to the third aspect of the present invention, the protrusion according to the first and second aspects is a fixed type, but the protrusion according to the present invention is provided with a spring below the protrusion. When a force is applied to the protrusion, the spring deforms, and when the force is removed, the spring returns to its original shape. Therefore, the protrusion moves up and down, and an opening necessary for deaeration and gas replacement can be provided. . Further, when the lid flange and the tray flange are engaged with each other, the spring of the projection body is deformed downward, the projection body moves downward, and the lid flange and the tray flange can be brought into close contact with each other.

  Furthermore, by providing a lid / tray engaging portion between the rising portion of the tray and the flange between the rising portion of the lid and the flange, the expansion / contraction portion of the elevating cylinder rises and the protruding piece provided on the short side of the lid When the is pushed up, the lid and tray are fixed at the lid / tray engaging portion without slipping or shifting, and an opening necessary for gas replacement can be provided, and then the spring is moved downward. When the moving protrusion is lowered and the lid does not slip or slip when closing the opening, the lid and the tray can be securely fitted, and the enclosed gas can be prevented from leaking, The inside of the packaging container can be surely replaced with gas.

  The gist of the present invention described in claim 4 is that the protrusion is an elevating cylinder.

  According to the present invention as set forth in claim 4, the lid encloses an object to be packaged in the packaging container by providing a projecting piece which becomes an engaging part with the lifting cylinder which is one embodiment of the protrusion on the short side. After that, the telescopic part of the lifting cylinder rises and pushes up the protruding piece provided on the short side of the lid, opens the opening and encloses the gas body after deaeration, and then the telescopic part of the lifting cylinder descends The projecting piece descends and the opening can be closed.

  Furthermore, by providing a lid / tray engaging part between the rising part of the tray and the flange between the rising part of the lid and the flange, the expansion / contraction part of the lifting cylinder is raised so that the protrusion provided on the short side of the lid When the piece is pushed up, the lid and tray are fixed at the lid / tray engaging portion without slipping or shifting, and an opening necessary for gas replacement can be provided. As the telescopic part descends and the projecting piece descends, the lid and the tray can be securely fitted without slipping or shifting when closing the opening, and the enclosed gas leaks. It is possible to prevent this, and the gas inside the packaging container can be surely replaced.

  The gist of the present invention described in claim 5 is that the lid is provided with protrusions on the left and right sides of the short side, and a notch-like space is provided between the protrusions.

  According to the present invention described in claim 5, since the protrusions that are the engaging portions with the protrusions are provided on the right and left sides of the short side of the lid, the protrusions can be provided so as to be in contact with the protrusions, The lid can be moved up and down stably without tilting left and right, and gas replacement can be performed.

  The gist of the present invention described in claim 6 is that the tray is provided with a short projecting piece.

  According to the sixth aspect of the present invention, when the packaging container of the present invention is opened, the protruding piece provided on the short side of the lid and the protruding piece provided on the short side of the tray are respectively picked up, and the lid and the tray are removed. By opening up and down, the packaging container can be reliably and easily opened, and an article to be packaged can be taken out from the packaging container.

  The gist of the present invention described in claim 7 is that a sealing portion is provided by heat welding the flange of the lid and the flange of the tray.

  According to the seventh aspect of the present invention, the gas sealed in the packaging container can be reliably held in the packaging container by providing the sealing part by heat welding the flange of the lid and the flange of the tray. It is possible to maintain an optimal environment that can maintain the quality of the food that is the packaged item in the packaging container, prevent deterioration, and the packaged item is safe and secure even after various distribution and storage conditions. Can reach the consumers in a safe state, reduce food loss, and contribute to environmental problems.

  The gist of the present invention described in claim 8 is that the upper surface of the lid is provided above the horizontal surface of the flange of the tray.

  According to the eighth aspect of the present invention, a three-dimensional package that rises from the flange surface of the tray, which is impossible with a gas replacement package that heat-seals a film as a lid for a conventional tray, is stored and covered. It becomes possible to do.

  According to the ninth aspect of the present invention, an article to be packaged is accommodated on a tray disposed in a lower mold installed on a tray sealer, a lid is put on, and a short hand projecting piece provided on the lid is provided on the lower mold. It is supported by a protrusion, the lid and tray are fitted at the lid / tray engaging part, an opening is provided between the short side of the lid and the short side of the tray, and the inside of the storage part surrounded by the lid and the tray is After degassing from the opening through the mold opening, the storage part is filled with gas, the upper mold is lowered, and the heated sealing hot plate and the lower mold provided in the upper mold are used to close the lid flange and tray. The gist of the present invention is a method for manufacturing a packaging container, which is formed by pressing and heat-welding a flange.

  According to the ninth aspect of the present invention, the lid is provided with a projecting piece to be engaged with the projection on the short side, so that the package flange is sealed by the projection after the packaged object is sealed in the packaging container. The lid flange is supported upward, and an opening is provided so that the lid flange does not overlap the tray flange, and a lid / tray engaging portion between the rising portion of the tray and the flange is provided between the rising portion of the lid and the flange. By providing it, the lid flange is supported upward by the protrusion, and the tilted lid does not slip or slip, and the lid and tray are fixed at the lid / tray engaging part, which is necessary for deaeration and gas replacement A packaging container provided with a simple opening can be manufactured.

  In the present invention described in claim 10, the articles to be packaged are accommodated on a tray disposed in a lower mold installed in a tray sealer, covered with a lid, and a short hand protruding piece provided on the lid is disposed from the upper part of the lifting cylinder. Pushed up at the upper part of the raised lifting cylinder telescopic part, the lid / tray engaging part fits the lid and tray, and an opening was provided between the short side of the lid and the short side of the tray, surrounded by the lid and tray After degassing the opening from the opening through the mold opening, the storage part is filled with gas, and the lifting cylinder expansion / contraction part inside the lifting cylinder descends into the lifting cylinder to The short lid piece in contact with the lid descends, the opening between the short lid and the short tray is closed, the lid and tray are fitted and covered, the upper mold is lowered, and the upper mold The lid flange and the tray are heated by the heated seal hot plate and the lower mold provided on the mold. By pressing the over flange is intended to be subject matter a method for manufacturing a packaging container formed by heat welding.

  According to the tenth aspect of the present invention, the projecting body is an elevating cylinder, and the lid is provided with a projecting piece that is an engagement portion with the elevating cylinder that is one embodiment of the projecting body on the short side. After enclosing the article to be packaged, the telescopic part of the lifting cylinder rises and pushes up the protruding piece provided on the short side of the lid, opens the opening and encloses the gas body after deaeration, and then the lifting cylinder As the telescopic part of the projection descends, the projecting piece descends and the opening can be closed.

  Furthermore, by providing a lid / tray engaging part between the rising part of the tray and the flange between the rising part of the lid and the flange, the expansion / contraction part of the lifting cylinder is raised so that the protrusion provided on the short side of the lid When the piece is pushed up, the lid and tray are fixed at the lid / tray engaging portion without slipping or shifting, and an opening necessary for gas replacement can be provided. As the telescopic part descends and the projecting piece descends, the lid and the tray can be securely fitted without slipping or shifting when closing the opening, and the enclosed gas leaks. Therefore, it is possible to manufacture a packaging container in which the inside of the packaging container is surely replaced with gas.

  The packaging container of the present invention accommodates a three-dimensional package, covers a three-dimensional shape, can be replaced with gas, and fits without shifting the three-dimensional lid and the tray and can be reliably sealed. By providing the packaging container, it is possible to store food, etc., which is a package that is raised above the horizontal surface of the flange of the tray, and the environment inside the packaging container and the environment outside the packaging container are different from each other. It is possible to create an optimal environment that can maintain the quality of the food that is packaged, prevent alteration, and the packaged items reach the consumers in a safe and secure state even after various distribution and storage conditions. It is possible to reduce food loss and contribute to environmental problems.

It is a perspective view which shows one Embodiment of the packaging container of this invention. It is explanatory drawing which shows a part of manufacturing process of 1 embodiment of the packaging container of this invention. It is explanatory drawing which shows a part of manufacturing process of 1 embodiment of the packaging container of this invention. It is explanatory drawing which shows a part of manufacturing process of 1 embodiment of the packaging container of this invention. It is explanatory drawing which shows a part of manufacturing process of 1 embodiment of the packaging container of this invention. It is explanatory drawing which shows a part of manufacturing process of 1 embodiment of the packaging container of this invention. It is explanatory drawing which shows a part of manufacturing process of 1 embodiment of the packaging container of this invention. It is explanatory drawing which shows a part of manufacturing process of 1 embodiment of the packaging container of this invention. It is explanatory drawing which shows the manufacturing process 1 of 1 embodiment of the packaging container of this invention. It is explanatory drawing which shows the manufacturing process 2 of 1 embodiment of the packaging container of this invention. It is explanatory drawing which shows the manufacturing process 3 of 1 embodiment of the packaging container of this invention. It is explanatory drawing which shows the manufacturing process 4 of 1 embodiment of the packaging container of this invention. It is explanatory drawing which shows the manufacturing process 5 of one Embodiment of the packaging container of this invention. It is explanatory drawing which shows the manufacturing process 6 of 1 embodiment of the packaging container of this invention. It is explanatory drawing which shows the manufacturing process 7 of 1 embodiment of the packaging container of this invention. It is explanatory drawing which shows the manufacturing process 8 of one Embodiment of the packaging container of this invention. It is explanatory drawing which shows the cross section which cut | disconnected the lid short protrusion piece in the longitudinal direction of 1 embodiment of the packaging container of this invention. It is explanatory drawing which shows the packaging container of a prior art example. It is explanatory drawing which shows the manufacturing line of the packaging container of a prior art example.

  Hereinafter, although the form for implementing this invention is demonstrated, it cannot be overemphasized that this invention is not what was limited to this.

  Hereinafter, embodiments of the packaging container 1 of the present invention will be described in detail with reference to the drawings.

  FIG. 1 is a perspective view showing an embodiment of a packaging container 1 of the present invention. The packaging container 1 of the present invention comprises a lid 2 and a tray 14.

  The lid 2 has a pair of lid short sides 9 and a pair of lid long sides 13 on its four sides, and is between the lower end of the lid rising portion 4 and the lid flange 8 which are slantly lowered from the edge of the lid upper surface portion 3. A lid engaging concave portion 5 constituting a lid / tray engaging portion 21 with a tray 14 provided so as to be in contact with the lid flange 8 as a lower end of the lid rising portion 4, a lid engaging rising portion 6 and a lid engaging convex portion 7. Have

  Further, a lid flange 8 extending substantially horizontally from the lid engaging convex portion 7 to the lid upper surface portion 3 was provided.

  In addition, a lid short projecting piece 12 is provided at both the lid short ends 10 of one short side 9 of the lid 2, and the lid short projecting piece 12 and the lid short projecting piece 12 are provided with a short lid. A hand-cut space 11 is formed.

  In the present embodiment, the lid short projecting pieces 12 are provided on the lid short end portions 10 of both the short sides 9 of the lid 2, but one or more lid short projecting pieces 12 may be provided. A plurality of them may be provided. Further, the shape of the lid short protrusion 12 is a shape in which the lid flange 8 of the lid short 9 protrudes in a substantially trapezoidal shape horizontally, but if it does not overlap with the tray short protrusion 19 at the same position, the lid short The position and shape of the hand 9 may be arbitrary.

  Next, the tray 14 has a pair of short trays 18 and a pair of long trays 20 on its four sides, and comes into contact with the tray bottom 15, the tray rising part 16 rising from the edge thereof, and the upper end of the tray rising part 16, It consists of a tray bottom 15 and a tray flange 17 provided substantially horizontally.

  A tray short protrusion 19 is provided on the tray short 18. Although the tray short protrusion 19 of the present embodiment has a shape in which the central portion of the tray flange 17 of the tray short 18 protrudes in a substantially trapezoidal shape, it does not overlap with the lid short protrusion 12 at the same position. The position and the shape to be installed on the short tray 18 may be arbitrary.

  The packaging container 1 has a lid / tray so that the lid short 9 and the tray short 18, the lid long 13 and the tray long 20 overlap each other, and the lid flange 8 and the tray flange 17 are in contact with each other. The engagement portion 21 is fitted.

  The lid / tray engaging portion 21 on the lid 2 side is a portion between the lower portion of the lid rising portion 4 and the lid flange 8, which is the lower end of the lid rising portion 4 and in contact with the lid flange 8. The lid / tray engaging portion 21 is a portion where the upper end of the tray rising portion 16 contacts the tray flange 17.

  The lid / tray engaging portion 21 has a lid engaging convex portion in which the tray rising portion 16 of the tray 14 and the lid engaging rising portion 6 are in contact with each other, and the side of the lid engaging rising portion 6 and the lid flange 8 is in an L shape. 7, the upper portion of the tray rising portion 16 and the portion where the tray flange 17 is in contact with the L-shape are fitted, and the lid 2 and the tray 14 are fitted tightly.

  In FIG. 17, the cross section which cut the packaging container 1 of this invention on the lid | cover short protrusion 12 in the longitudinal direction was represented.

  Next, the manufacturing process and manufacturing method of the packaging container 1 of the present invention will be described in detail.

  In the packaging container 1 of the present invention, a packaged article is placed on a tray 14, covered with a lid 2, and stored in a storage unit 23. After replacing the air in the storage unit 23 with a predetermined gas, the lid flange 8 and the tray flange 17 is heat-sealed to seal the package.

  3 to FIG. 6, after the packaging container 1 in which the objects to be packaged are placed on the tray 14 and covered with the lid 2 and stored in the storage unit 23 is stored in the mold installed in the tray sealer, the upper mold 42 is The state where it descends and contacts the lower mold 43 is shown.

  9 to 16 show specific procedures for gas replacement and thermal welding of the storage unit 23 in FIG.

  2 and 3 are explanatory views showing a part of the manufacturing process of one embodiment of the packaging container of the present invention. The lid 2 is provided with a projecting piece 12 which is an engagement portion with the protrusion 31 on the short side, and between the rising portion 4 of the lid 2 and the lid flange 8, the rising portion 16 of the tray 2 and the tray flange 17 are A lid / tray engaging portion 21 was provided.

  Drawing 4 is an explanatory view showing a part of manufacturing process of one embodiment of the packaging container of the present invention. The protrusion 32 is a tube having a closed upper bottom surface, and has an opening 33 in the upper part of the side surface, and an opening 34 penetrating the mold branching channel 35 of the lower mold 43 in the lower part.

  Drawing 5 is an explanatory view showing a part of manufacturing process of one embodiment of packaging container 1 of the present invention. The protrusion 38 includes a spring 39.

  Drawing 6 is an explanatory view showing a part of manufacturing process of one embodiment of packaging container 1 of the present invention. The raising / lowering cylinder 40 was provided as a protrusion.

  3 in FIG. 3, 32 in FIG. 4, 38 in FIG. 5, and 40 in FIG.

  The protrusion 31 is provided at a position where the protrusion 31 is engaged with the lid short protrusion 12 of the lower mold 43. The protrusion 31 is fixed when the lid flange 8 is supported upward, the opening 22 is provided without the lid flange 8 overlapping the tray flange 17, and degassing and gas can be enclosed. The protrusions 31 and 32 may be used, and the movable protrusions 38 and 40 that move up and down may be used.

  The operation of the packaging container 1 in the gas replacement of the protrusions 31, 32, 38, 40 will be described separately for the protrusions that do not move up and down by the fixed protrusions 31, 32 and the movable protrusions 38, 40. To do.

  In the case of the fixed projections 31 and 32, the projections do not move up and down. Therefore, the packaging container 1 stores the items to be packaged on the tray 14 disposed in the lower mold 43 installed in the tray sealer, and the lid 2 is attached. The lid short projection 12 provided on the lid 2 is supported by the projection 31 provided on the lower mold 43, and the lid 2 and the tray 14 are fitted by the lid / tray engaging portion 21. 9 and the short side 18 of the tray, an opening 22 is provided, and the inside of the storage part 23 surrounded by the lid 2 and the tray 14 is degassed from the opening 22 through the mold opening 46, and then into the storage part 23. The gas is filled, the upper die 42 is lowered, and the lid flange 8 and the tray flange 17 are pressed and thermally welded by the heated sealing heat plate 44 and the lower die 43 provided on the upper die 42. Form.

  In the case of the movable projections 38 and 40, the packaging container 1 stores an article to be packaged on the tray 14 disposed in the lower mold 43 installed in the tray sealer, covers the lid 2, and is provided on the lid 2. The lid short projecting piece 12 is pushed up by the upper part of the elevating cylinder telescopic part 41 rising from the upper part of the elevating cylinder 40, and the lid 2 and the tray 14 are fitted by the lid / tray engaging part 21, so that the short side 9 of the lid An opening 22 is provided between the short side 18 of the tray and the inside of the storage unit 23 surrounded by the lid 2 and the tray 14 is evacuated from the opening 22 through the mold opening 46 and then gas is supplied to the storage unit 23. The elevating cylinder expansion / contraction part 41 in the elevating cylinder 40 is lowered into the elevating cylinder 40, so that the lid short protrusion 12 in contact with the upper part of the elevating cylinder expansion / contraction part 41 is lowered, and the lid short side 9 and the opening 22 between the tray short 18 The lid 2 and the tray 14 are fitted and covered with the lid 2, the upper mold 42 is lowered, and the lid seal 8 is heated by the heated sealing heat plate 44 and the lower mold 43 provided on the upper mold 42. And the tray flange 17 are pressed and thermally welded.

  7 and 8, the elevating cylinder 40 has an elevating cylinder expansion / contraction part 41 therein, and as shown in FIG. The lid short protrusion 12 is pushed up at the upper part of the lid, the opening 22 between the lid short 9 and the tray short 18 of the lid 2 and the tray 14 is opened, and air is sucked from the opening 22 through the mold opening 46. In addition, the storage unit 23 can be filled with an arbitrary gas.

  By lowering and retracting the elevating cylinder telescopic portion 41 in the elevating cylinder 40, the lid short protrusion 12 is pulled down, and the opening 22 between the lid 2, the lid short 9 of the tray 14, and the tray short 18 is formed. close.

  In this step, the lid 2 and the tray 14 are disengaged from the lid short 9 that is not provided with the lid short protrusion 12 by pushing up the lid short protrusion 12 at the top of the lifting cylinder telescopic part 41. In order to prevent the lid 2 from shifting or slipping from the tray 14, the lid engaging raised portion 6 and the lid engaging convex portion 7 in which the sides of the lid flange 8 are in contact with each other in the L-shape are provided on the tray rising portion 16. A lid / tray engaging portion 21 for engaging the lid 2 and the tray 14 is provided by fitting the upper portion with the portion where the tray flange 17 contacts the L-shape.

  FIGS. 9 to 16 show the state of the inside of the mold prepared in the tray sealer, and is a view in which the central portion of the mold is cut vertically, and in accordance with these figures, the procedures of gas replacement and thermal welding are described in detail. explain.

  In the mold prepared for the tray sealer, although not shown, an upper mold 42 and a lower mold 43 are provided in which a packaging container 1 containing an object to be packaged is installed. A seal hot plate 44 formed along the shape of the lid upper surface portion 3, the lid rising portion 4 and the lid flange 8 is installed on the upper portion of the mold 43, and the seal hot plate 44 and the lid flange 8 are in contact with each other and thermally sealed. It consists of a hot plate contact portion 45 and a mold opening 46 which is an air outlet and an optional gas inlet.

  FIG. 9 shows a state in which the upper mold 42 and the seal heat plate 44 are lowered and are in contact with the lower mold 43 after the packaging container 1 storing the package is placed on the upper part of the lower mold 43. Here, the sealing heat plate 44 is not sufficiently lowered until the sealing heat plate contact portion 45 provided at the end is still in contact with the lid flange 8, and the lifting cylinder expansion / contraction portion 41 is provided inside the lifting cylinder 40. It is in the state.

  FIG. 10 shows that the elevating cylinder expansion / contraction part 41 inside the elevating cylinder 40 is lifted from the upper part of the elevating cylinder 40 to push up the lid short protrusion 12 at the upper part of the elevating cylinder expansion / contraction part 41. The state where the opening 22 between the short side 9 and the tray short side 18 is opened is shown.

  FIG. 11 shows that air is sucked in the direction of the white arrow from the mold opening 46 of the upper mold 42 and the mold opening 46 of the lower mold 43, and the air existing in the storage unit 23 from the opening 22. Shows the state of being sucked.

  In FIG. 12, an arbitrary gas is sealed in the direction of the black arrow from the mold opening 46 of the upper mold 42 and the mold opening 46 of the lower mold 43, and an arbitrary gas is sealed from the opening 22 to the storage unit 23. Shows the state of being filled.

  In FIG. 13, when the elevating cylinder telescopic portion 41 inside the elevating cylinder 40 is lowered into the elevating cylinder 40, the lid short protrusion 12 in contact with the upper part of the elevating cylinder elastic portion 41 is lowered, and the lid 2 And the opening part 22 between the lid short side 9 and the tray short side 18 of the tray 14 is lost, and the state where the lid 2 and the tray 14 are fitted is shown.

  In FIG. 14, the seal hot plate 44 is lowered, the seal hot plate contact portion 45 is in contact with the lid flange 8, and the lid flange 8 and the tray flange 17 are thermally welded by the heat and pressure of the seal hot plate 44.

  FIG. 15 shows a state in which the seal heat plate 44 has been lifted to eliminate contact between the seal heat plate contact portion 45 and the lid flange 8.

  FIG. 16 shows the packaging container 1 in which the upper mold 42 and the sealing heat plate 44 are raised and stored in the mold, the inside of the storage section 23 is replaced with gas, and the lid 2 and the tray 14 are thermally welded and sealed. Indicates released state.

  Next, the usage method of the packaging container 1 of this invention is described.

  The packaging container 1 which is sealed by gas replacement and heat-sealed is picked up by the lid short protrusion 12 and the tray short protrusion 19 respectively, and the lid 2 and the tray 14 are opened up and down to be opened.

  When two short lid protrusions 12 are provided as in the arrangement of FIG. 1, the packaging container 1 is easy to pick and easy to open in both right-handed and left-handed cases.

  Next, the effect of the packaging container 1 of the present invention will be described in detail.

  The lid 2 is provided with a projecting piece 12 which is an engagement portion with the projection 31 on the short side, and after the article to be packaged is enclosed in the packaging container 1, the lid flange 8 is supported upward by the projection 31. The lid flange 8 is not overlapped with the tray flange 17 and the opening 22 is provided so that deaeration and gas can be enclosed.

  By providing the lid / tray engaging portion 21 between the rising portion 16 of the tray 2 and the tray flange 17 between the rising portion 4 of the lid 2 and the lid flange 8, the lid flange 8 is moved upward by the protrusion 31. The lid 2 and the tray 14 are fixed by the lid / tray engaging portion 21 without the sliding and shifting of the inclined lid 2 supported, and an opening 22 necessary for deaeration and gas replacement is provided.

  The protrusion 32 has a closed top surface, has an opening 33 at the upper side, and a lower portion formed of a tube provided with an opening 34 penetrating the mold branch flow path 35 of the lower mold 43. In addition to the above function, it also has a function as a flow path from the mold branch flow path 35 to the lower opening 34 and the tubular protrusion 32 to the side upper opening 33, and the deaeration and gas in the packaging container 1 Replacement is facilitated.

  Since the protrusion 38 is provided with the spring 39 below the protrusion 38, the protrusion 38 moves up and down, and the opening 22 necessary for deaeration and gas replacement can be provided.

  The protrusions 31, 32, 38, and 40 are provided at positions that engage with the short lid protrusion 12 of the lower mold 43, so that the lid flange 8 is supported upward, and the lid flange 8 overlaps with the tray flange 17. Instead, it is possible to provide the opening 22 to enclose the deaerated gas body.

  The lid 2 is provided with a projecting piece 12 on the short side 9 to be in contact with the elevating cylinder 40, so that an article to be packaged is enclosed in the packaging container 1, and then the expansion / contraction part 41 of the elevating cylinder 40 is lifted. The projecting piece 12 provided on the short side 9 is pushed up, an opening 22 is provided and a gas body is sealed after deaeration, and then the telescopic part 41 of the elevating cylinder 40 descends and the projecting piece 12 descends. Thus, the opening 22 can be closed.

  Further, by providing a lid / tray engaging portion 21 between the rising portion 16 of the tray 14 and the flange 17 between the rising portion 4 of the lid 2 and the lid flange 8, the telescopic portion 41 of the elevating cylinder 40 is raised. Then, when the protruding piece 12 provided on the short side 9 of the lid 2 is pushed up, the lid 2 and the tray 14 are fixed by the lid / tray engaging portion 21 without the lid 2 slipping or shifting, and the gas replacement The opening 22 necessary for the operation can be provided, and then the telescopic part 41 of the elevating cylinder 40 is lowered and the projecting piece is lowered so that the lid 2 does not slide or slip when the opening 22 is closed. In addition, the lid 2 and the tray 14 can be securely fitted, the sealed gas can be prevented from leaking, and the inside of the packaging container 1 can be surely replaced with gas.

  Since the projecting pieces 12 that are in contact with the elevating cylinder 40 are provided on the left and right sides of the short side 9 of the lid 2, it is possible to provide the elevating cylinder 40 so as to be in contact with each projecting piece, and the lid 2 tilts to the left and right. It is possible to move up and down stably and perform gas replacement.

  When the packaging container 1 of the present invention is opened, the protruding piece 12 provided on the short side 9 of the lid 2 and the protruding piece 19 provided on the short side 18 of the tray 14 are respectively picked, and the lid 2 and the tray 14 are moved up and down. By opening, it becomes possible to open the packaging container 1 reliably and easily, and to-be-packaged goods can be taken out from the packaging container 1.

  When two short lid protrusions 12 are provided as in the arrangement of FIG. 1, the packaging container 1 is easy to pick and open easily in both right-handed and left-handed cases.

  By lowering and retracting the elevating cylinder telescopic portion 41 in the elevating cylinder 40, the lid short protrusion 12 is pulled down, and an opening 22 between the lid 2, the lid short 9 of the tray 14, and the tray short 18 is formed. It is possible to close and hold any gas filled in the storage unit 23.

  By providing the seal portion 30 by heat welding the flange 8 of the lid 2 and the flange 17 of the tray 14, the gas sealed in the packaging container 1 can be reliably held in the packaging container 1, and the packaging container It is possible to maintain an optimal environment that can maintain the quality of the food that is packaged in 1 and prevent deterioration, and the packaged material is consumed in a safe and secure state even after various distribution and storage conditions. Can help reduce environmental impact and reduce food loss.

  The lid 2 can be accommodated by accommodating a three-dimensional package that rises from the flange surface of the tray 14, which is not possible with a gas replacement package that heat seals a film as a lid for a conventional tray.

  The packaging container 1 of the present invention accommodates a three-dimensional packaged object, covers a three-dimensional lid 2, can be replaced with gas, and fits the three-dimensional lid 2 and the tray 14 without slipping, ensuring reliable. By providing the packaging container 1 that can be sealed, food or the like that is a packaged item raised above the horizontal surface of the flange 17 of the tray 14 can be stored.

  Furthermore, the environment inside the packaging container 1 and the environment outside the packaging container 1 can be made different to create an optimum environment that can maintain the quality of the food that is the packaged goods, preventing alteration, and various distribution and storage Even after passing through the condition, the packaged goods can reach the consumer in a safe and secure state, and can contribute to environmental problems by reducing food loss.

  In the present invention, “gas replacement” means that the steps shown in FIGS. 9 to 16 are used to first evacuate the air from the packaging container 1 and then to determine the ratio of nitrogen, oxygen, and carbon dioxide gas present in the atmosphere. It means to mix and mix so as to be suitable for the preservation of the packaged goods, and to replace with a safe mixed gas for packaging. By substituting the gas, the inside of the packaging container 1 can be replaced with a safe mixed gas, the freshness of the package can be maintained, and the quality retention period can be extended.

  In the packaging container 1 of the present invention, the steps shown in FIGS. 9 to 16 can be taken, the replacement rate of the mixed gas can be increased to 99.9%, and the freshness of the product can be maintained by suppressing oxidation and bacterial growth. can do.

  The mixed gas sealed in the packaging container 1 in the gas replacement differs depending on the package. As the inert gas, carbon dioxide having bacteriostatic action and nitrogen gas which is tasteless and odorless inert gas can be employed. In addition, oxygen gas, which is an active gas, can be employed when it is necessary to maintain the color of meat or red fish.

  More specifically, in order to prevent oxidation of a packaged product such as a food containing a lot of fats and oils, the scent and color of the packaged product can be kept in a natural state by mixing nitrogen. In addition, meat, red fish, and the like can maintain the color and freshness by promoting the color development of the chromoprotein of the package by mixing oxygen. Furthermore, by mixing carbon dioxide, it is possible to suppress the growth of bacteria and molds.

  Here, an object to be packaged is placed on the tray 14 of the packaging container 1, filled with the mixed gas, covered with the lid 2, and the lid flange 8 and the tray flange 17 are thermally welded to contain the mixed gas. It is possible to delay the deterioration by maintaining the environment in 1 and suppressing the oxidation of food and the growth of bacteria.

  On the other hand, in a packaging container in which a wrap is wrapped around the entire surface of a tray that does not have a gas barrier function, the mixed gas cannot be contained, and there is an increased possibility of returning to the state before the gas replacement by aeration. It is difficult to suppress the growth of bacteria and bacteria.

  The types of the lid 2 and the tray 14 of the packaging container 1 of the present invention are not particularly limited, but the gas-substituted mixed gas is held without escaping or deteriorating, and the environment of the storage unit 23 in which the packaged items are stored is maintained. What was manufactured with the material is preferable. Further, the thickness and shape of the lid 2 and the tray 14 of the packaging container 1 vary depending on the material and the object to be packaged.

  Specifically, it has a gas barrier property that maintains freshness, a fragrance-retaining property that does not transfer fragrance, a sealing property that keeps humidity constant and protects it from drying and moisture, an openability that can be heat-sealed at the required strength and can be opened with fingers, basic It needs to be safe to protect food, anti-fogging to prevent condensation on the inside, and durable to resist impact and break.

  The specific characteristics to be provided as the material of the tray 14 are that it has a heat seal property, an oxygen barrier property, and suitability for a microwave oven.

  The material of the tray 14 that realizes these is roughly divided into two or more layers of an outer layer and a seal layer, and a film having strength such as A-PET (amorphous polyethylene terephthalate) or PP (polypropylene) is used for the exterior. In addition, it is preferable to use a film having heat sealing properties such as PE (polyethylene) and PP for the sealing layer.

  In particular, when oxygen barrier properties are imparted, it is preferable to provide an intermediate layer between the outer layer and the seal layer, and to arrange a film made of EVOH (ethylene-vinyl alcohol copolymer) in the intermediate layer.

  Films used in manufacturing the tray 14 include EVOH / Ny / PE coextruded with PP, laminated film with PP, or EVOH / Ny coextruded with APET if microwave oven suitability is not required A laminated film with / PE is conceivable.

  The specific characteristics that should be provided as the material of the lid 2 are that it has an easy peel property, and has heat sealability, oxygen barrier properties, and microwave oven suitability.

  The material of the lid 2 that realizes these is roughly divided into three layers, an outer layer, an intermediate layer, and a seal layer. A heat-resistant film such as Ny is used for the exterior, and the intermediate layer is made of A-PET or the like. It is preferable to use a film constituting strength and use a film having heat sealing properties such as PE and PP for the sealing layer.

  In particular, when oxygen barrier properties are imparted, it is preferable to dispose a film made of EVOH between the intermediate layer and the seal layer.

  As shown in FIG. 1, the shape of the lid 2 and the tray 14 of the packaging container 1 according to the present embodiment is a short rectangular shape having a substantially rectangular tray bottom 15 and a substantially rectangular shape having a long side. Other substantially rectangular parallelepiped shapes may be used, and there is no particular limitation as long as the gas replacement and thermal welding processes can be performed with a mold of a tray sealer.

  Further, the protrusion 31 provided at a position where it engages with the short lid protrusion 12 of the lower mold 43 has the lid flange 8 supported upward, so that the lid flange 8 does not overlap the tray flange 17 and is open. If it is possible to provide the degassing and the gas body, it may be a fixed projection body or a movable type that moves up and down.

  In the present invention, the tray sealer places an article to be packaged on the tray 14 in a mold installed in the tray sealer, and the lid short projecting piece 12 of the packaging container 1 covered with the lid 2 is placed above the lifting cylinder 40. It is pushed up by the upper part of the elevating cylinder telescopic part 41 raised from above, and an opening 22 is provided between the lid short side 9 and the tray short side 18, and air is sucked from the opening 22 through the mold opening 46 and the storage part 23 As a result, the elevating cylinder expansion / contraction part 41 inside the elevating cylinder 40 descends into the elevating cylinder 40, so that the lid short protrusion 12 in contact with the upper part of the elevating cylinder expansion / contraction part 41 descends. Thus, a series of hermetically sealed packaging, in which the opening 22 between the lid short 9 and the tray short 18 is eliminated, the lid 2 and the tray 14 are fitted, and the lid flange 8 and the tray flange 17 are heat-sealed. It is a device used to make fine gas replacement.

  Through the steps shown in FIG. 9 to FIG. 16, deaeration is performed while adjusting the atmospheric pressure so that the pressure difference in the storage unit 23 before and after the gas replacement is minimized, and at the same time, the mixture is filled with the mixed gas. It is possible to package without changing the shape.

  In the present invention, packages include meat, fish, ham, bacon, fried egg, kamaboko and other processed fish egg products, Japanese side dishes, western dishes, cheese, medical syringes and needles, metal products that dislike rust, etc. There is a wide range of food, medical equipment, industrial products, etc.

  The packaging container of the present invention accommodates a three-dimensional package, covers a three-dimensional shape, can be replaced with gas, and fits without shifting the three-dimensional lid and the tray and can be reliably sealed. By providing a packaging container, it is possible to store foods and the like that are higher than the horizontal surface of the flange of the tray, and make the environment inside and outside the packaging container different from each other, It is possible to create an optimum environment that can maintain the quality of food to be packaged.

DESCRIPTION OF SYMBOLS 1 Packaging container 2 Lid 3 Lid upper surface part 4 Lid rising part 5 Lid engaging recessed part 6 Lid engaging rising part 7 Lid engaging convex part 8 Lid flange 9 Lid short 10 Lid short end 11 Lid short cut-in space Part 12 Lid short protrusion 13 Lid long 14 Tray 15 Tray bottom 16 Tray rising part 17 Tray flange 18 Tray short 19 Tray short protrusion 20 Tray long 21 Lid / tray engaging part 22 Opening 23 Storage part 30 Seal Part 31 Projection 32 Projection 33 Upper Opening 34 Lower Opening 35 Mold Branch Flow Path 38 Projection 39 Spring 40 Lifting Cylinder (Protrusion)
41 Lifting cylinder expansion / contraction part 42 Upper mold 43 Lower mold 44 Sealing hot plate 45 Sealing hot plate contact part 46 Mold opening part 60 Gas replacement packaging body 61 Cover material film 62 Resin tray 63 Resin tray and adhesion part of cover material film 64 Contents of Fresh Food 65 Inert Gas 70 Conveyor 71 Conveyor 72 Conveyor 73 Conveyor 74 Conveyor 75 Conveyor 78 Tray Sealer 79 Direction 80 Tray 82 Heat Sealing Tool 84 Base 86 Support Block 90 Storage Roll 91 Plastic Seal Film 92 Printer 94 Printer 96 Pickup Roller

Claims (10)

  The lid of the packaging container comprising a tray and a lid is provided with a projecting piece to be engaged with the protrusion on the short side, and the rising portion of the tray is disposed between the rising portion of the lid and the flange of the lid. A packaging container having a lid / tray engaging portion with a flange of a tray.   The packaging container according to claim 1, wherein the protrusion is a tube having a closed upper bottom surface, has an opening in the upper part of the side surface, and has an opening in the lower part that penetrates the die branching channel of the lower mold.   The packaging container according to claim 1, wherein the protrusion includes a spring.   The packaging container according to claim 1, wherein the protrusion is an elevating cylinder.   The packaging container according to any one of claims 1 to 4, wherein the lid is provided with projecting pieces on the left and right sides of the short side, and a notched space is provided between the projecting pieces.   The packaging container according to any one of claims 1 to 5, wherein the tray is provided with a projecting piece on a short side.   The packaging container in any one of Claim 1 thru | or 6 which provided the seal | sticker part by heat welding the flange of a lid | cover and the flange of a tray.   The packaging container according to any one of claims 1 to 7, wherein the upper surface of the lid is provided above a horizontal plane of the flange of the tray.   The packaged items are stored on the tray placed in the lower mold installed in the tray sealer, covered with a lid, and the lid short projection provided on the lid is supported by the projection provided on the lower mold, and the lid / tray The lid and tray are fitted in the engaging part, an opening is provided between the short side of the lid and the short side of the tray, and the inside of the storage part surrounded by the lid and the tray is removed from the opening through the mold opening. After gas is filled, gas is filled in the storage part, the upper mold is lowered, and the lid flange and tray flange are pressed and heat-welded with the heated sealing hot plate and lower mold provided in the upper mold. A method for manufacturing a packaging container, characterized by being formed.   The packaged items are stored on the tray placed in the lower mold installed in the tray sealer, covered with a lid, and the lid short projecting piece provided on the lid is lifted from the top of the lifting cylinder by the upper part of the lifting cylinder expansion / contraction part. Push up, the lid and tray are fitted at the lid / tray engaging part, an opening is provided between the short side of the lid and the short side of the tray, and inside the storage part surrounded by the lid and the tray, through the mold opening After degassing from the opening, the storage part is filled with gas, and the elevating cylinder extendable part inside the elevating cylinder descends into the elevating cylinder, so that the short lid piece in contact with the upper part of the elevating cylinder elastic part Move down and close the opening between the lid short and tray short, the lid and tray fit and cover the lid, lower the upper mold and the heated seal heat provided in the upper mold Press the lid flange and tray flange with the plate and lower mold to heat Method for producing a packaging container, characterized in that formed by wear.

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