JP2004203446A - Deep drawing packaging container, shaping method for product using the same, container body used in the shaping method, and die for deep drawing forming apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a deep drawing packaging container, by which a flexible content or fluid can be formed into a final shape having complicated irregularities easily at low costs, and a manufacturing method for the deep drawing packaging container. <P>SOLUTION: According to the deep drawing packaging container, the flexible content or fluid 1 (fried egg or heat formed egg product is excluded) is put into a deep-drawing-formed container body 2 through its opening, which is sealed with an lid film 3 attached thereto. The container body 2 is made of a half-hard or hard film, and is formed by deep drawing process to be made into the final shape of a product having irregularities. After sealing the container body 2 with the lid film 3, the sealed container body is subjected to an evacuation process to make the flexible content or fluid 1 into the final shape of the product 1a. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
In the present invention, a deeply drawn container body is filled with a flexible content or a fluid (except for an egg-baked or egg-formed product) from an opening of the container body, and the opening is covered with a cover film. The present invention relates to a deep drawing packaging container to be mounted and sealed, a method of forming a product shape using the deep drawing packaging container, a container body used in the method of forming a product shape using the deep drawing packaging container, and a molding die of a deep drawing forming device. It is. The egg heat-molded product refers only to a product that contains foodstuffs such as vegetables and meat and seasonings in the egg fried.
[0002]
[Prior art]
Conventionally, when a processed food having an intricate uneven shape is formed, the following manufacturing method has been used.
[0003]
In the case of a flexible content, a shape is formed by a shape forming method by mold filling.
Specifically, for example, in the case of producing a press ham having a square cross section, a raw material having properties close to a fluid is slowly filled into a bag having air permeability, and after filling, the final desired shape is formed. After filling in the mold, heat treatment is performed after the mold is filled. After the heating, the mold was released through a cooling step.
[0004]
In the case of a fluid, for example, in the case of yokan, a heated raw material is poured into a mold, cooled, formed into a shape, taken out of the mold, and then vacuum-packed. Also, in the case of jelly, a heat-resistant tray purchased from a tray manufacturer is filled with a liquid material in a warm state, the lid film is heat-sealed and sealed when the tray is full, and then heat-treated and then cooled. The contents are solidified.
[0005]
[Problems to be solved by the invention]
However, in the case of a flexible content, the method of forming a shape by filling the mold needs to be able to easily release the mold, so that there is a problem that it cannot be used for a complicated shape in which it is difficult to release the mold.
[0006]
In addition, in the case of a fluid, for example, in the case of a yokan, there is a process of once pouring into a mold, then taking out from the mold and performing vacuum packaging.
[0007]
On the other hand, in the case of jelly, it is necessary to use a tray purchased from a tray manufacturer, so that the packaging material cost is high, and since the shape of the mold can be changed only by the tray manufacturer, the jelly manufacturer needs to use the mold. There is a problem that it is difficult to change freely.
[0008]
There is also a method in which a container body serving as a molding die is manufactured by drawing. In drawing, a normal temperature or heated thermoplastic resin sheet is stretched along the male plug to form a double curved surface, but due to the properties of the thermoplastic resin sheet, molded products with complicated shapes are manufactured. It is difficult. That is, in general, most (about 90%) of the film on the container body side used in deep drawing is a film based on polyester (for example, polyester / polyamide / EVOH / polyethylene) and has a melting point of about 100 to 100%. Since the temperature is about 120 ° C., molding can be performed at a low temperature. However, there is a problem that molding at a low temperature makes it difficult to form a complicated shape having an uneven groove smaller than about 5 mm (for example, see Patent Documents 1 and 2). .
[0009]
The present invention is to solve such a problem. That is, it is a simple and low-cost deep-drawing package that can be formed into a final shape having a complicated concavo-convex shape with a flexible content or fluid (except for an egg-baked or egg-heat-molded product). An object of the present invention is to provide a method for forming a shape of a product using a container and a deep-drawing packaging container, and a mold for a container body and a deep-drawing forming apparatus used in a method for forming a shape of a product using a deep-drawing packaging container.
[0010]
[Patent Document 1]
JP 2001-287728 A [Patent Document 2]
JP, 2002-145215, A
[Means for Solving the Problems]
In order to achieve the above-mentioned object, a deep-drawing packaging container according to the present invention according to claim 1 comprises a deep-drawing-formed container body in which a flexible content or fluid (however, an egg-grilled or egg-heat-molded product is prepared). ) Is filled through the opening of the container body, and the opening is sealed with a lid film.
The container body is made of semi-rigid or hard film, and is deep-drawn so as to have a final shape of a product having an uneven shape. The characteristic feature is that a proper content or fluid is formed in the final shape of the product.
[0012]
The deep drawing packaging container according to the present invention as set forth in claim 2 is characterized in that the container main body and / or the lid film are made of polypropylene as a base material.
[0013]
According to a third aspect of the present invention, in the deep drawing packaging container, the container main body and / or the lid film have a heat-resistant resin layer disposed on a surface of a polypropylene base material.
[0014]
According to a fourth aspect of the present invention, in the deep drawing packaging container, the heat-resistant resin layer constituting the container body is a polyamide resin.
[0015]
The method for forming a shape of a product using the deep-drawing packaging container according to the present invention according to claim 5 is a method of forming a flexible content or a fluid (eg, egg) in a deep-drawing-formed container body having a final shape of the product. (Excluding baked or egg thermoformed products)
It is characterized in that the filled contents are formed in a final shape into a product equivalent to the shape of the container body.
[0016]
The method of forming a product shape using the deep-drawn packaging container according to the present invention according to claim 6, is a method of forming a flexible content in a container body made of a semi-rigid or hard film which is deep-drawn so as to have a final shape of the product. Or fill with a fluid (excluding egg-baked or egg-heated products)
After attaching and sealing the opening of the container body with a lid film, vacuuming is performed,
It is characterized in that the filled contents are formed in the final shape of the product equivalent to the shape of the container body.
[0017]
According to a seventh aspect of the present invention, there is provided a method for forming a shape of a product using the deep-drawn packaging container according to the present invention, wherein a heat treatment is further performed after evacuation.
[0018]
The container body used in the method for forming a shape of a product according to claim 8 is characterized in that an uneven shape can be formed on the flexible content or fluid (except for an egg-baked or egg-formed product). And
[0019]
The container body used in the method for forming a shape of a product according to claim 9 is characterized in that the container body can have an uneven shape having a width smaller than about 5 mm.
[0020]
A molding die of the deep drawing apparatus according to claim 10 is a concave molding die for molding the outer shape of the container body according to claim 8 or 9, and has an inner shape that codes to the outer shape of the container body. It is characterized by having.
[0021]
BEST MODE FOR CARRYING OUT THE INVENTION
An embodiment of the present invention will be described below with reference to the drawings.
(First Embodiment)
FIG. 1 is a cross-sectional configuration diagram illustrating a step of forming a flexible content or fluid into a final shape by a deep-drawing packaging container according to the first embodiment of the present invention.
(A) is a view showing a step of filling a flexible content into a container body, (b) is a view showing a step of attaching and sealing a lid film, and (c) is a step of performing vacuuming (case) FIG. 3D is a diagram illustrating a step of taking out a product.
[0022]
The method of forming a product shape using the deep-drawing packaging container of the present invention basically includes filling a container body 2 with a flexible content or a fluid (except for an egg-baked or egg-formed product). After the lid film 3 is attached and sealed, a vacuum is drawn. The container body 2 of this packaging container is characterized by being semi-rigid or rigid and deep-drawn to have the final shape of a product 1a having irregularities.
[0023]
Heat treatment is not indispensable for the flexible content or fluid 1 to be filled, but by heating, the shape can be more easily formed. At the time of filling, jelly, boiled rice, yokan, etc. as a specific example of the soft contents or fluid 1 to be filled are fluids 1 having a somewhat high temperature, and solidify by cooling after the heat treatment. In the case of the fluid 1, a secondary heating step or final heating by a purchaser is required after vacuum packaging for forming the shape. In addition, in the case of filling and solidifying a sausage raw material (fresh ground meat that has been subjected to pretreatment such as seasoning), it is an essential requirement to heat and cook the raw raw material. Heating of the flexible content is not necessarily required, but heat treatment after vacuum packaging facilitates shape formation. The flexible contents 1 are those having a certain degree of elasticity and being molded by compression. For example, meat loaf, kamaboko, terrine and the like.
[0024]
The container body 2 of the packaging container is made of a semi-rigid or rigid film, and can be selected from various materials according to the application. Preferably, the container body 2 is based on polypropylene. Further, preferably, the container body 2 is provided with a heat-resistant resin layer on the surface of a polypropylene base material. More preferably, the heat-resistant resin layer constituting the container body 2 is preferably made of a polyamide resin.
[0025]
Hereinafter, specific examples of the film of the container body 2 having heat resistance will be described.
[0026]
When the oxygen barrier property is not required, it is preferable to be composed of polypropylene alone. When oxygen barrier properties are required (in the case of retort treatment), it is preferred to be composed of three layers, an outer layer, an intermediate layer and a seal layer, each composed of polypropylene, EVOH and polypropylene.
[0027]
In the case of boil heating, steam heating, or the like, when the oxygen barrier property is not required, it is preferable that there is no intermediate layer, the outer layer and the seal layer are formed, and each is made of polypropylene and ultra-low density polyethylene.
[0028]
Further, the lid film 3 of the packaging container can be selected from various materials depending on the application. Hereinafter, specific examples of the lid film 3 having heat resistance will be described.
[0029]
In the case of boil heating, steam heating, or the like, it is preferably composed of three layers, an outer layer, an intermediate layer, and a seal layer, and composed of polyamide and ultra-low density polyethylene. When more heat resistance is required, such as in the case of a retort treatment, it is preferable to be composed of an outer layer and a seal layer, and to be composed of polyamide and polypropylene. In the case of having oxygen barrier properties (in the case of retort treatment), it is preferable to be composed of two layers of an outer layer and a seal layer, and to be composed of silicon-deposited polyester and polypropylene.
[0030]
In the case of having oxygen barrier properties and performing boil heating and steam heating, the lid film 3 is preferably composed of two layers, an outer layer and a seal layer, and is preferably composed of silicon-deposited polyester and ultra-low-density polyethylene.
[0031]
As in the above configuration example, it is preferable to select a film to be used for the container main body 2 and the lid film 3 according to the preservability of a product to be vacuum-packaged and the method of heat treatment. However, in the case of a heat-resistant film, it is most common to use polypropylene as the base material in consideration of moldability, cost, and versatility.
[0032]
In addition, after filling the fluid into the container body molded into the desired shape, vacuum packaging, freezing, distributing it in a frozen state, the buyer cooks it in a boiling or microwave oven at the time of use. There is also a method of forming a shape. In this case, cold resistance such as pinhole resistance and crack resistance during freezing is required. Specifically, it is necessary to use a material having cold resistance such as addition of polyamide for the lid film. In addition, it is necessary to use a material having cold resistance (for example, polypropylene or the like) for the container body.
[0033]
In the above-described example, the number of layers is two or three. However, the number of layers may be four or more depending on various conditions (heating conditions or cooling conditions) of the manufacturing process or conditions such as complexity of the shape. Of course. As an example of the four layers, for example, a configuration of polypropylene / EVOH / polypropylene / polyamide is used.
[0034]
The final shape of the product 1a includes an uneven shape, a shape having intricate complicated unevenness, or a three-dimensional shape including characters, character designs, and the like. In particular, when grooves and ribs such as irregularities are formed, in the case of a conventional deep-drawn container body (molding die), it is difficult to mold the container body unless it is larger than about 5 mm. It is possible to mold even a groove or a rib having unevenness of 5 mm or less.
[0035]
Next, with reference to FIGS. 1A to 1D, a description will be given of a process of manufacturing a product having irregularities using a deep-drawn packaging container.
[0036]
As shown in (a), a flexible content (except for an egg-grilled or egg-heated product) is placed in a semi-rigid or rigid film container body 2 formed to have the final shape of the product 1a. Fill. The flexible content 1 is substantially equal to the inner volume of the container body 2, and has an outer shape enveloping the hollow shape of the container body 2. When filled in the container main body 2, the size is slightly larger than the height of the container main body 2.
[0037]
After filling, as shown in (b), the flange portion of the opening of the container body 2 is hermetically mounted by welding with the lid film 3. At this time, the lid film 3 is in a state of rising upward due to the volume of the contents 1.
[0038]
Thereafter, as shown in (c), a vacuum is drawn through a small hole (not shown) in the flange portion on the container body 2 side. In some cases, heating for secondary sterilization is performed. By evacuation, the contents 1 are formed into a shape conforming to the shapes of the lid film 3 and the container main body 2, and the portion raised above the container main body 2 also becomes horizontal, and the filled contents 1 are transferred to the container main body 2. It is formed in a shape equivalent to the shape of.
[0039]
The purchaser purchases in the state of (c), peels off the lid film 3, and takes out the product 1a formed in the shape of the container body 2. As shown in FIG. 3, the product 1a is a rigid or semi-rigid film, so that the product 1a is not deformed, and the product 1a is formed into a container body 2 at the front and rear ends. It can be formed into a beautiful shape along the uneven shape of.
[0040]
(Second embodiment)
Next, a second embodiment will be described with reference to FIG. FIG. 2 is a perspective view illustrating a step of forming a flexible content or fluid into a final shape by a deep-drawing packaging container according to the second embodiment of the present invention.
(A) is a diagram showing a state before filling the container body with the fluid, (b) is a diagram showing a process of filling the container body with the fluid, and (c) is a cover film attached and sealed. FIG. 3D is a diagram showing a step of performing vacuum evacuation (including a step of performing a heat treatment, as the case may be), and FIG.
[0041]
The second embodiment is different from the first embodiment only in that the filling is a fluid 1, and the other manufacturing steps are basically the same as the first embodiment.
[0042]
Next, with reference to FIGS. 2A to 2D, a process of manufacturing a product having irregularities using a deep-drawn packaging container will be described.
[0043]
As shown in (a), this is a state before filling a container body 2 made of a semi-rigid or rigid film molded into the final shape of the product 1a. The shape of the container body 2 is an animal type such as a mouse.
[0044]
Next, the fluid 1 is filled in the container body 2 as shown in FIG. The fluid 1 is, for example, a liquid such as jelly, and is filled with substantially the same volume as the internal volume of the container body 2.
[0045]
After filling, as shown in (c), the flange portion of the opening of the container body 2 is attached and sealed by welding with the lid film 3. After evacuation, heating for secondary sterilization is optionally performed. Since the fluid 1 such as jelly is solidified by heating, heating is necessary.
[0046]
The purchaser purchases in the state of (c), peels off the lid film 3, and takes out the product 1a formed in the shape of the container body 2.
[0047]
The molding die (female die) of the deep drawing apparatus for molding the container body 2 used in the present embodiment is a complicated CAD / CAM system capable of three-dimensional design and a machine tool capable of three-dimensional processing. It can be manufactured and processed into a shape. In drawing, a thermoplastic sheet (for example, a polypropylene base sheet) is stretched from a thermoplastic resin sheet heated at room temperature or heated along a molding die (male die) to form a double curved surface.
[0048]
【The invention's effect】
As described above, according to the first aspect of the present invention, a flexible content or a fluid (except for an egg-baked or egg-heat-molded product) is placed in a deep-drawn container body. Filling from the opening, in a deep drawn packaging container that is sealed by mounting the opening with a lid film,
The container body is made of a semi-rigid or hard film, and is deep-drawn so as to have a final shape of a product having an uneven shape. Since the object or the fluid is formed in the final shape of the product, it is possible to manufacture a product having an uneven shape with a simple configuration.
[0049]
Further, since a hard or semi-hard film is used for the container body, the container does not lose its shape. As in the past, in the case of a product packed in a soft bag, since the shape is not clear at the end and the line is not clear, the appearance is not preferable, but in the present invention, the end can be formed into a beautiful shape. As a result, the appearance is good, the product value is improved, and the purchaser's willingness to purchase can be stimulated.
[0050]
According to the second aspect of the present invention, since the container body and / or the lid film have a configuration in which polypropylene is used as a base material, molding of the uneven shape is facilitated.
[0051]
According to the third aspect of the present invention, the container body and / or the lid film have a structure in which a heat-resistant resin layer is disposed on the surface of a polypropylene base material, so that the melting point and the softening point are reduced. Since the height is increased, high-temperature heating becomes possible, and in particular, the shape of the container body can be formed into a complicated shape. Thereby, the final shape of the product to be filled can be formed into a complicated shape.
[0052]
In particular, according to the present invention, the container main body can be suitably molded by using the polyamide resin for the heat-resistant resin layer constituting the container main body.
[0053]
According to the present invention as set forth in claims 5 and 6, flexible contents or fluids (eg, egg-baked or egg-heated) are contained in a container body made of a semi-rigid or hard film formed to have a final shape of a product. Excluding molded products)
By forming the filled contents into a product having the same shape as the shape of the container body, a product having an uneven shape can be easily manufactured.
[0054]
According to the seventh aspect of the present invention, sterilization or solidification can be performed according to the product by performing heating after evacuation after sealing and heating.
[0055]
According to the present invention as set forth in claim 8, the shape of the container main body can be formed into an uneven shape on the flexible content or fluid (except for the egg-baked or egg-heat-molded product). It can be formed into any final shape.
[0056]
According to the ninth aspect of the present invention, the final shape of the product can be formed into a more precise and complicated shape by making the shape of the container main body a width of the uneven shape smaller than about 5 mm. .
[0057]
According to the tenth aspect of the present invention, the concave female mold for molding the outer shape of the container main body according to the eighth or ninth aspect has an inner shape that corresponds to the outer shape of the container main body. Therefore, the shape of the container body can be formed into an arbitrary shape.
[Brief description of the drawings]
FIG. 1 is a cross-sectional configuration diagram illustrating a step of forming a flexible content or a fluid into a final shape by a deep-drawing packaging container according to a first embodiment of the present invention, and FIG. Figure showing the step of filling the container body with the object, (b) shows the step of mounting and sealing the lid film, and (c) shows the step of performing vacuum evacuation (possibly performing the heat treatment step). (D) is a diagram showing a step of taking out a product.
FIG. 2 is a perspective view illustrating a step of forming a flexible content or a fluid into a final shape by a deep-drawing packaging container according to a second embodiment of the present invention. A diagram showing a state before filling an animal, (b) is a diagram showing a step of filling a container body with a fluid, and (c) is a step of attaching a lid film, sealing the container, and evacuating (case) FIG. 3D is a diagram illustrating a step of taking out a product.
FIG. 3 is a perspective view of a product manufactured by the container main body serving as the mold of FIG. 1;
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Flexible content or fluid 1a Product 2 Container main body 3 Lid film

Claims (10)

A deeply drawn container body is filled with a flexible content or fluid (except for an egg-baked or egg-heated product) through an opening of the container body, and the opening is sealed with a lid film. In drawn packaging containers,
The container body is made of semi-rigid or hard film, and is deep-drawn so as to have a final shape of a product having an uneven shape. A deep-drawing packaging container characterized in that a proper content or fluid is formed in the final shape of the product. The deep drawn packaging container according to claim 1, wherein the container body and / or the lid film are made of polypropylene as a base material. The deep-drawn packaging container according to claim 1, wherein the container body and / or the lid film have a heat-resistant resin layer disposed on a surface of a polypropylene base material. The deep drawn packaging container according to claim 3, wherein the heat resistant resin layer constituting the container body is a polyamide resin. Fill the container body deep drawn to the final shape of the product with flexible contents or fluids (however, excluding egg-baked or egg-formed products) and fill the filled contents into the container body. A method for forming a shape of a product using a deep-drawing packaging container, wherein the shape is formed into a final shape on a product having the same shape. Fill the container body made of semi-rigid or hard film deep-drawn to the final shape of the product with flexible contents or fluids (excluding egg-baked or egg-shaped products),
After attaching and sealing the opening of the container body with a lid film, vacuuming is performed,
A method for forming a shape of a product using a deep-drawn packaging container, wherein the filled content is formed into a final shape in a product equivalent to the shape of the container body. 7. The method according to claim 6, wherein a heat treatment is further performed after the evacuation. 8. The method according to claim 6, wherein the flexible content or the fluid (except for the roasted or heated egg product) can be formed with an uneven shape. Container body. 9. The container body used in the method of forming a product shape according to claim 8, wherein the container body can have an uneven shape having a width smaller than about 5 mm. A forming die for forming the outer shape of the container body according to claim 8 or 9, wherein the forming die has an inner shape that corresponds to the outer shape of the container body.

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