JP4624547B2 - Vacuum-tight packaging method - Google Patents

Description

[0001]
[Industrial application fields]
The present invention belongs to the technical field of vacuum packaging, and particularly relates to a vacuum hermetic packaging method in which seafood such as seafood and kneaded products are deaerated without being damaged and airtightly packaged.
[0002]
[Prior art and its problems]
(1) Conventionally, for example, as a method of packaging candy, buns, etc., a porous packaging film made of a synthetic resin film is laid on a vacuum pulling board having a number of suction holes, and this is packaged. A packaging method is known in which an article is placed and covered with a thermoplastic synthetic resin film heated and softened from above, and then the air between the two films is sucked by a vacuuming device to closely wrap the article to be packaged.
[0003]
However, in the above method, even if the packaging film is in close contact with the object to be packaged, air and moisture enter from the air vents opened in the lower packaging film, and the freshness is significantly reduced. Was not suitable.
[0004]
(2) As another example of the packaging method, as shown in FIG. 6, an article to be packaged b is put in a bag a of a synthetic resin film, and the inside air is sucked by a vacuuming device c to be airtight. There are ways to wrap.
[0005]
However, even in such a packaging method, since a thick synthetic resin film is used, atmospheric pressure is applied to the entire surface for a long time in the process of sucking until the film is brought into close contact with the packaged object b. For this reason, this is a pressing force that squeezes the object to be packaged, especially in the packaging of fish and meat with a flexible surface, which destroys cells and extrudes body juice containing umami ingredients and pigments, so-called drip There was an inconvenience.
[0006]
(3) Further, as another packaging method, as shown in FIG. 7, a female mold e previously adapted to the outer shape of the packaged object d is formed with a hard film f, and the female mold e is covered with the female mold e. A packaging method is known in which the opening g is sealed with a synthetic resin film h after the package d is stored.
[0007]
However, since this packaging method can be applied only to the packaged material d that conforms to the outer shape previously defined as the female mold e, it can be applied to standard molded products such as buns and sweets. It is difficult to apply to fish and meat having the shape described above, and in addition, the mold cost for forming the female mold e is increased.
[0008]
【the purpose】
Therefore, the present invention is a problem that the various packaging methods described in the above (1) to (3) have, that is, difficulty in forming an advanced vacuum state, damage to a packaged object due to evacuation, and packaging of various shapes. The purpose is to solve this problem in view of the difficulty in adapting to food, and the lack of airtightness after packaging, and the conventional vacuuming packaging machine can be used as it is. It is intended to provide a vacuum hermetic packaging method that can be applied to various forms without being limited to the characteristics of the packaged object such as a processed product or the like, and that can be performed reliably and inexpensively.
[0009]
[Means for Solving the Problems]
In order to achieve the above object, the vacuum hermetic packaging method according to the present invention comprises the following steps.
That is,
B) The lower packaging film (2) having a vent hole (20) formed in the peripheral part away from the placement position (P) of the article to be packaged (W) is mounted on the base plate (10) of the vacuuming device (1). The first step,
B) a second step of laying a mount (3) having a number of apertures (30) on the upper surface of the lower packaging film (2);
C) After placing the article to be packaged (W) on the mount (3) other than the formation position of the vent holes (20) of the lower packaging film (2), the upper packaging film (4) is (W) and a third step of covering the entire surface of the mount (3),
D) The vacuuming device (1) is activated, and the vent (20) of the lower packaging film (2) and the opening (30) of the mount (3) are communicated to each other to mount the mount (3) and the upper packaging. A fourth step of sucking air (A) between the film (4) and
E) After sufficiently performing the air suction, the upper packaging film (4) and the mount (3) in the vicinity of the package (W) not including the vent hole (20) of the lower packaging film (2) And the lower packaging film (2) are welded, and the package (W) is packaged in an airtight state with the lower packaging film (2), the mount (3), and the upper packaging film (4). .
[0010]
The mount (3) used here may have a large number of apertures (30) over the entire surface and a large number of irregularities formed on the surface.
[0011]
Moreover, in the said process, it is good also as the following processes, changing the structure of a mount.
(B) A vacuuming device for mounting a mount (6) having a large number of irregularities formed on the surface of the placement position (P) of the article to be packaged (W) and a vent hole (60) in the periphery thereof. A first step laid on the base plate (10) of (1),
B) After placing the article to be packaged (W) at the placement position (P) described above, the upper packaging film (4) is placed so as to cover the entire surface of the article to be packaged (W) and the mount (6). 2 steps,
C) The vacuuming device (1) is activated to communicate the concave and convex portions on the surface of the mount (6) and the vent holes (60), and the air between the mount (6) and the upper packaging film (4) A third step of sucking (A);
D) After sufficient air suction, the upper packaging film (4) and the mount (6) in the vicinity of the package (W) not including the vent hole (60) of the mount (6) are welded. And allowing the object to be packaged (W) to be packaged in an airtight state by the mount (6) and the upper packaging film (4).
In each of the above [Means for Solving the Problems] and [Claims], the reference numerals in parentheses are added after the words, but this is for ease of understanding. Needless to say, the present invention is not limited to the form of the drawings.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Next, an embodiment that realizes the vacuum hermetic packaging method according to the present invention will be described in detail with reference to the drawings. FIG. 1 is a perspective view showing the concept of this embodiment according to the present invention, FIG. 2 is a cross-sectional view showing a vacuuming process of this embodiment, and FIG.
[0013]
Reference numeral 1 denotes a vacuuming device 1, and a substantially rectangular flat plate-like base plate 10 in which a large number of suction holes 11 penetrating vertically is formed on the upper surface thereof, and is disposed on the back side of the base plate 10. A space 12 communicating with the vacuum pump 13 is provided. Then, a negative pressure state is formed in the space 12 by the vacuum pump 13, and the air on the upper surface of the base plate 10 is sucked through the suction hole 11 communicating with the space 12. In addition, since the evacuation apparatus 1 used here is a well-known device having a general configuration, further detailed description of the configuration will be omitted.
[0014]
In the embodiment of the present invention, the lower packaging film 2 made of a synthetic resin film material having a large number of vent holes 20 is laid on the upper surface of the base plate 10. The shape of the vent hole 20 is not limited as long as it can be vented, but the formation position thereof is formed in a peripheral portion away from the placement position P of the article to be packaged W. In this embodiment, since the article W to be packaged is placed and packaged near the center of the rectangular lower packaging film 2, the peripheral portion is limited to the vicinity of the four edges of the lower packaging film 2. Formed. In addition, although illustration is abbreviate | omitted, for example, when arrange | positioning two to-be-packaged goods W near the center of the lower packaging film 2 with a predetermined space | interval etc., the ventilation hole 20 is also provided in the position between the to-be-packaged goods W. May be formed. That is, it is not necessarily limited to the configuration of FIG.
[0015]
Next, a mount 3 made of a synthetic resin film material in which a large number of apertures 30 are formed over the entire surface is laid on the lower packaging film 2. The shape of the opening 30 is not limited, but may be an opening diameter that allows air to flow. In addition, the mount 3 uses a thick material (for example, a leaf column, etc.) that is relatively looser than the lower packaging film 2, and although not shown in the drawing, if necessary, a large number of uneven portions are formed on the surface. You may make it do. For example, it is good also as a structure which forms many ditch | grooves or a protruding item | line, or forms a convex part and a recessed part (dimple) in a scattered dot shape. Thereby, it has the effect of making it easier to guide the air flowing on the surface to the opening 30.
[0016]
In this state, an object to be packaged W (for example, a paste such as fresh fish or salmon as shown) is placed on the upper surface of the mount 3, and then the upper packaging film 4 made of a thermoplastic synthetic resin film material is heated. Then, it is softened and gently covered with an area covering the entire surface of the mount. The upper packaging film 4 is a non-porous material having no air permeability, becomes more flexible when heated, has extremely excellent followability to the object contour, and has a certain degree of rigidity after heat dissipation.
[0017]
As described above, when the lower packaging film 2, the mount 3, the article W to be packaged, and the upper packaging film 4 are stacked in this order and placed on the base plate 10, the ends of the upper packaging film 4 and the lower packaging film 2. The edges are overlapped and this portion is held by the packing 14.
[0018]
After the formation of this state, when the vacuum pump 13 is started, the air in the space 12 is sucked into a negative pressure state, and the object to be packaged W and the mount 3 are placed between the upper packaging film 4 and the suction hole 11. Air is aspirated. At this time, as shown in FIG. 3, the air A staying in the vicinity of the article to be packaged W circulates on the surface of the mount 3, passes through the opening 30, and the vent hole 20 of the lower packaging film 2. The vacuum pump 13 is sucked from the suction hole 11 of the panel 10.
[0019]
Finally, when air is sufficiently sucked and the air A disappears and the upper packaging film 4 is in close contact with the package W, the upper packaging film 2 does not include the vent holes 20 and is surrounded by the upper package film W in the vicinity of the package W. Three sheets of the wrapping film 4, the mount 3 and the lower wrapping film 2 are melt-bonded by the welding means 5. Thereby, the to-be-packaged object W is hermetically sealed while being kept airtight. In addition, it is necessary to prevent the air holes 20 opened in the lower packaging film 2 from being included in the airtight state. The welding means 5 may use existing technical equipment such as pressure welding, heat welding, or ultrasonic vibration welding as long as it ensures adhesion.
[0020]
[Other Embodiments]
Although the said Example comprises the base_sheet | mounting_paper 3 and the lower side packaging film 2 separately, as shown in FIG. 4, it is also possible to set it as the following as a whole.
[0021]
That is, in the first step of the above embodiment, the lower packaging film 2 is omitted, and a large number of irregularities 61 are formed on the surface of the placement position P of the article W, and the periphery of the placement position P. A mount 6 in which a ventilation hole 60 is formed in the portion is used. The process of laying the mount 6 having such a configuration on the base plate 10 of the vacuuming apparatus 1 is a first process, and the second process, the third process, and the fourth process are performed in the same manner as in the above embodiment. At this time, since the lower packaging film 2 is omitted, the air A staying in the vicinity of the article to be packaged W flows through the surface between the concave and convex portions 61 of the mount 6 as shown in FIG. Passing through the suction hole 11 of the base plate 10, the vacuum pump 13 sucks it.
[0022]
Finally, when the air A is sufficiently exhausted and the upper packaging film 4 comes into close contact with the package W, the mount 6 is mounted around the package W not including the vent hole 60 of the mount 6. And two upper wrapping films 4 are melt-bonded by the same welding means 5 as in the previous embodiment. Thereby, the to-be-packaged object W is hermetically sealed while being kept airtight. In addition, the uneven | corrugated | grooved part 61 is crushed and flattened by the press of the welding means 5, the mount 6 and the upper side packaging film 4 adhere, and airtightness is maintained.
[0023]
【effect】
Since the present invention is configured as described above, it solves the various problems of the above-mentioned conventional example, and eliminates the adverse effects caused by, for example, pressing of atmospheric pressure on fresh seafood with a flexible surface. It has a remarkable effect that the air around the package can be completely sucked and air-tight packaging can be performed in a state where the degree of vacuum is increased.
[0024]
In carrying out the present invention, the existing evacuation equipment can be used as it is, and the cost increase factor required for new packaging is only the interposing sheet, which can be suppressed at a low cost.
[0025]
From the above, the new packaging method of the present application can perform conventional vacuum packaging more completely, and in particular, vacuum-tight packaging of fresh seafood with a flexible surface that has not had an effective vacuum packaging method until now. It is a revolutionary thing.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a concept of an embodiment according to the present invention.
FIG. 2 is a cross-sectional view showing a vacuuming process of an embodiment according to the present invention.
FIG. 3 is an enlarged view of a main part showing a evacuation process of an embodiment according to the present invention.
FIG. 4 is a perspective view showing the concept of another embodiment according to the present invention.
FIG. 5 is an enlarged view of a main part showing a vacuuming process of another embodiment according to the present invention.
6A is a perspective view and FIG. 6B is a cross-sectional view showing an example of a conventional packaging form.
7A is a perspective view and FIG. 7B is a cross-sectional view showing an example of a conventional packaging form.
[Explanation of symbols]
1 Vacuuming device 10 Base 11 Suction hole 12 Space 13 Vacuum pump 14 Packing 2 Lower packaging film 20 Vent hole 3 Mount 30 Opening hole 4 Upper packaging film 5 Welding means 6 Mount (in other embodiments)
60 Ventilation hole 61 Concavity and convexity portion W Packaged object P Placement position A Air (to the vicinity of packaged object W)

Claims (2)

Vacuum-tight packaging method consisting of the following steps.
B) The lower packaging film (2) having a vent hole (20) formed in the peripheral part away from the placement position (P) of the article to be packaged (W) is mounted on the base plate (10) of the vacuuming device (1). The first step,
B) a second step of laying a mount (3) having a number of apertures (30) on the upper surface of the lower packaging film (2);
C) After placing the article to be packaged (W) on the mount (3) other than the formation position of the vent holes (20) of the lower packaging film (2), the upper packaging film (4) is (W) and the third step of covering the entire surface of the mount (3),
D) The vacuuming device (1) is activated, and the vent (20) of the lower packaging film (2) and the opening (30) of the mount (3) are communicated to each other to mount the mount (3) and the upper packaging. A fourth step of sucking air (A) between the film (4) and
E) After sufficiently performing the air suction, the upper packaging film (4) and the mount (3) in the vicinity of the package (W) not including the vent hole (20) of the lower packaging film (2) And the lower packaging film (2) are welded, and the package (W) is packaged in an airtight state with the lower packaging film (2), the mount (3), and the upper packaging film (4). .   The vacuum hermetic packaging method according to claim 1, wherein a number of irregularities are formed on the surface of the mount (3).

Images