JPH11105929A - Packaging container lidded with film and method for processing fringe of film - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a packaging container whose lid consisting of film appears good along the edge and also feels good to the touch. SOLUTION: A packaging container 1a lidded with film is formed by providing a container body 2 designed to be opened at the top and to contain jelly and having a neck part consisting of the upper peripheral edge extended outward by a prescribed length. To this neck part, a film 4 is attached by heat seal and cut off at positions a little projecting outward from the edge of the neck part. The open top is closed with the lid by curling the projecting edge of the film over the edge of the neck. To curl the edge of the film 4 over the edge of the neck the projecting part of the edge of the film 4 is rubbed on an inclined surface 66a with heating, which surface opens wider outwardly with descent. Since the edge of the film 4 does not project outward from the neck part of the container body 2 nor does it rise above the container body 2, the resulting packaging container 1a appears nice and feels good to the touch and is of high commercial value.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a packaging container in which the upper surface is opened and the upper surface of a container body formed so as to contain predetermined contents such as jelly or mizukan is closed with a film, and a film edge. Regarding the processing method.

[0002]

2. Description of the Related Art As shown in FIGS. 10 to 12, a conventional packaging container 101 has an upper surface opened and a peripheral portion of the upper surface of a container body 102 formed so as to receive a predetermined content therein. An elongated jaw 103a and a part of the pull 103 for opening the lid further extended in a substantially triangular shape.
b, after heat sealing the film 104, the jaw 10
Generally, the open upper surface is closed by cutting along the edge of the 3a and the edge of the pull portion 103b. The packaging container 101 containing the contents as described above is obtained by pinching the edge of the film 104 of the pull portion 103b to form a container body 102.
It can be peeled off and opened.

[0003]

In the above conventional example, it is difficult to cut the heat-sealed sheet-like film accurately so as to match the edge of the jaw portion 103a and the edge of the pull portion 103b of the container body 102. Therefore, there is a problem that the appearance and touch are poor and the commercial value is reduced.
As a method for solving this problem, a method of covering the edge of the film 104 with a wrapping material such as a cap or a package, or a method of covering the edge of the film 104 so that the edge of the film 104 does not protrude outside the edge of the jaw 103a or the pull 103b. And the container body 102
A method of integrally cutting the edge of the jaw 103a and the edge of the pull portion 103b can be considered.
Personnel costs, equipment costs, and the like, and in the latter method, the equipment costs of a new cutting device are each added to the manufacturing cost, and a new problem arises in that all of these costs are greatly increased. Particularly, the cutting device used in the latter method is expensive, and the material cut and discarded is wasted. The present invention
It is an object of the present invention to solve these problems, and to provide a packaging container closed with a film formed so that the edge of the cut film 104 has a good appearance and a film edge processing method capable of making the edge of the cut film 104 good. And

[0004]

According to one aspect of the present invention, there is provided a packaging container according to the present invention, comprising a container body having an open upper surface and a predetermined content contained therein. A film is heat-sealed to a jaw extending the outer periphery of the upper surface by a predetermined length, and the film is cut at a portion projecting slightly outward from the jaw edge to close the open upper surface. The protruding portion is curled so as to cover the edge of the jaw.

According to a second aspect of the present invention, there is provided a packaging container according to the present invention, wherein a jaw portion is formed by opening a top surface of the container body and forming a predetermined content therein so that a peripheral portion of the top surface extends outward by a predetermined length. The film is heat-sealed to a pull portion for opening the lid which extends a part of the jaw portion, and cut at a portion which protrudes slightly outward from the jaw edge and the pull portion edge. Close the open top surface of the container body, curl the projecting portion of the film edge so as to wind the jaw edge and the pull edge, respectively, and determine the degree of curl winding for the pull portion, While making the curl tip for the jaw edge reach the back surface of the jaw while making it smaller than the degree of wrapping, while preventing the curl tip for the pull portion to reach the back surface of the pull portion, Karl boundary portion is obtained by gradually continuously change the degree of entrainment.

According to a third aspect of the present invention, there is provided a method for processing a film edge according to the present invention, wherein the upper peripheral edge of a container body formed so as to open a top surface and accommodate a predetermined content therein is extended outward by a predetermined length. On the jaw, a film is heat-sealed and cut at a portion slightly protruding outside the jaw edge, and the projecting portion of the film edge of the packaging container with the open upper surface of the container body closed is attached to the film. The edge is curled so as to be wound around the edge of the jaw.

According to a fourth aspect of the present invention, there is provided a film edge processing method according to the present invention, wherein a jaw is formed by opening a top surface of a container body formed to receive a predetermined content therein and extending a peripheral portion of the top surface outward by a predetermined length. The film is heat-sealed to a portion and a pull portion for opening the lid which extends a part of the jaw, and cut at a portion slightly protruding from the edge of the jaw and the edge of the pull portion. The protruding portion of the film edge, which closes the open upper surface of the main body, is wound around the edge of the jaw and the edge of the pull portion, and the degree of curling of the pull portion is smaller than the degree of curl of the jaw portion. As the size becomes smaller, the degree of winding at the boundary between the curls is gradually and continuously changed.

According to a fifth aspect of the present invention, there is provided a film edge treatment method according to the present invention, wherein a heater capable of moving up and down at a position above a packaging container having an open upper surface of a container body closed with a film is provided. And a base to be fixed to the lower side of the base so as to be able to conduct heat, open obliquely outward from above to below, and adjust the inclination angle of the portion corresponding to the jaw,
To be larger than the inclination angle of the part corresponding to the pull part,
A substantially cylindrical curl forming member having an inclined surface on the inner side of the side wall such that both inclination angles gradually and continuously change, and a lower end of a support rod supported movably up and down at the center of the lower surface of the base. An edge processing device including a separation plate fixed so as to correspond to a lower end inside the curl forming member is used.

[0009]

Preferred embodiments of the present invention will be described below in detail with reference to the accompanying drawings. Here, FIG. 1 of the accompanying drawings is a perspective view of a packaging container closed with a film in the embodiment, FIG. 2 is a plan view in the embodiment, and FIG. 3 is a cross-sectional view of the embodiment in FIG. FIG. 4 is a sectional view taken along line BB of FIG.
FIG. 5 is a schematic diagram of a lid closing unit according to the embodiment, and FIG.
FIG. 7 is a partially longitudinal enlarged view of the film edge processing apparatus according to the embodiment, FIG. 7 is a perspective view of a curl forming unit according to the embodiment, FIG. 8 is an enlarged end view taken along line CC of FIG. FIG. 8 is an enlarged end view taken along line DD of FIG. 7 in the embodiment.

First, the packaging container 1 closed with a film will be described. As shown in FIG. 1 to FIG. 4, the packaging container 1 is configured such that the upper surface of the container main body 2 is formed such that the upper surface is opened and a predetermined content jelly (not shown) is accommodated in the container. Jaw 3 extending a predetermined length almost horizontally
a and a part thereof are extended substantially in a triangular shape to form a pull portion 3b, and a film 4 is heat-sealed and closed on the upper surface of the pull portion 3b. In addition, the edges of the film 4 are curled 4a, 4a so that the edges of the jaw 3a and the pull 3b are involved.

As clearly shown in FIGS. 3 and 4, the degree of curl 4b wrapping around the edge of the pull portion 3b is smaller than the degree of curl 4a wrapping around the edge of the jaw 3a. The degree of entrainment is continuously changed so as to gradually decrease.

In the packaging container 1 constructed as described above, the edge of the film 4 is curled so as to involve the edge of the jaw 3a and the edge of the pull portion 3b, and no step is formed at the boundary between the curls 4a and 4b. Since the degree of entrainment is gradually and continuously changed as described above, there is an advantage that the appearance and feel are good and the commercial value is increased. Further, since the degree of the curl 4b wrapping around the edge of the pull portion 3b is smaller than the degree of wrapping of the curl 4a around the edge of the jaw 3a, the curl 4b tip separation plate does not adhere to the edge of the pull portion 3b more than necessary. There is an advantage that it is easy to pinch and peel off sometimes.

Next, the closing process of the container body 2 filled with jelly as a content will be described with reference to FIGS. As shown in FIG. 5, a closing unit 51 for closing the container body 2 supports the container body 2 and intermittently circulates (moves from right to left in FIG. 5).
And a plurality of well-known buckets 52
And a known film feeder (not shown) for moving the sheet-like film 4 in synchronization with the movement of each of the buckets 52, and above each bucket 52 so as to sandwich the film 4, A known seal bar device 53 for heat-sealing the film 4 to the jaw portion 3a and the pull portion 3b of the main body 2, and the seal bar device 53 is disposed following the seal bar device 53, and the film 4 is attached to the jaw portion 3a and the pull portion. 3
b) a known trimming device 54 for cutting along
The trimming device 54 is disposed at a position outside the moving portion of the film 4 and the film 4 edge processing device 55 according to the present invention for curling the film 4 edge serving as a lid. A known transfer device 57 for transferring the completed packaging container 1 to the conveyor 56.

As shown in FIG. 5, the bucket 52
The container body 2 is formed in a cylindrical shape so that the entire jaw portion 3a and the pull portion 3b are locked and mounted, and its movement path includes a jelly filling device (not shown) at a position before the lid closing unit 51 and a jelly filling device (not shown). At the pre-stage position, place the container body 2 in the bucket 5
2 and a mounting device (not shown) for mounting.

As shown in FIG. 5, the film feeder (not shown) synchronizes the sheet-like film 4 with the bucket 52 by a driven roller (only a roller 58 is shown) and a driving roller (not shown). This is so-called intermittent movement in which the movement and the stop are alternately performed.

As shown in FIG. 5, a seal bar device 53 is provided.
Is provided with a base 60 having a built-in heater 59 capable of moving up and down with respect to the container main body 2 with the sheet-shaped film 4 interposed therebetween, and provided below the base 60 so as to be capable of conducting heat, It comprises a jaw 3a of the container body 2 and a heating portion 61 having a lower shape (ring shape) corresponding to the pull portion 3b. The raising and lowering operation of the seal bar 53 is configured to synchronize with the movement and stop of the bucket 52 or the sheet-like film 4, and descends when the container body 2 and the sheet-like film 4 stop simultaneously, After the sheet-shaped film 4 is thermocompression-bonded to the jaw 3a and the pull portion 3b of the container body 2 by the heating unit 61, the film 4 is moved upward.
At the same time, the bucket 52 and the sheet-like film 4 move, and the succeeding bucket 52 and the sheet-like film 4 of the succeeding portion move and stop just below the seal bar device 53.

As shown in FIG. 5, the trimming device 54
Is a base 62 capable of ascending and descending at a position above the container main body 2 heat-sealed with the sheet-like film 4, and a jaw 3 a edge of the container main body 2 provided below the base 62. And a cutting portion 63 having a cutting blade 63a having a shape corresponding to the edge of the pull portion 3b.
The trimming 54 is configured to move up and down in synchronization with the seal bar 53. When the container body 2 heat-sealed with the sheet-like film 4 stops, the trimming 54 descends, and the trimming blade 63a After cutting the sheet-like film 4 along the edge of the jaw portion 3a and the edge of the pull portion 3b of the container main body 2, the film rises, and at the same time, the bucket 52 moves to the next step, and the subsequent bucket 52 and the sheet of the subsequent portion are moved. The film 4 moves and stops just below.

As shown in FIG. 5, the film edge processing device 5
Reference numeral 5 denotes a base 65 having a built-in heater 64 capable of ascending and descending at a position above the packaging container 1a in which the open upper part of the container main body 2 is closed with the film 4, and a transfer to the lower side of the base 65. It is provided so as to be heatable and opens obliquely outward from above to below. The inclination angle of the portion corresponding to the jaw 3a is approximately 50 degrees, and the inclination angle of the portion corresponding to the pull portion 3b is approximately 50 degrees. Inclined surfaces 66a, 66 formed at 60 degrees and both inclination angles gradually and continuously change
b having a substantially cylindrical shape inside the side wall 66.
7 (see FIG. 7) and a separation plate 69 provided at the lower end of the support rod 68 attached to the lower surface of the base 65. The support rod 68 is provided at the center 67a of the curl forming member 67 (FIG. 7).
), And the upper end thereof is supported at the center of the lower surface of the base 65 so as to be movable up and down, and is urged downward by a pressing spring (not shown). It is located at the lower end inside the member 67.

As clearly shown in FIG. 6, the film edge processing apparatus 55 configured as described above is used for the packaging container 1a before processing.
Descends when stopped just below, and rubs while heating the edge of the film 4 with the inclined surfaces 66a, 66b inside the side wall 66 (see the dotted line in FIG. 6), thereby causing the projecting portion of the edge of the film 4 to The curl is wound so that the edge of the jaw 3a and the edge of the pull portion 3b are wound, and the degree of the curl 4b wound around the pull portion 3b is smaller than the degree of the curl 4a wound around the jaw 3a (FIG. 3).
And FIG. 4) together with the curls 4a and 4b to form a shape in which the degree of winding at the boundary is gradually and continuously changed. Further, the film edge processing device 55
After the curls 4a and 4b are formed, the bucket 52 rises, the bucket 52 moves, and the subsequent bucket 52 moves and stops immediately below the bucket 52.

When the edge of the film 4 is heated and rubbed from above to below by the inclined surfaces 66a and 66b inside the side wall 66 of the curl forming member 67, the edge of the film 4
a, 66b, and then bend each inclined surface 6
6a and 66b and the jaw 3a and the pull 3b are pressed and strongly rubbed and curled. Also, the inclined surfaces 66a, 6
Since the angle of inclination gradually changes continuously between 6b, the degree of curling between the jaw 3a and the pull portion 3b also changes gradually and continuously, so that a step does not occur.

As shown in FIG. 5, the transfer device 57 transfers the packaging container 1 that has become a product as described above to a bucket 5.
The air is blown up from under the bucket 52 when the bucket 52 is in a stopped state so as to transfer the air from the bucket 2 to the conveyor.

The closing operation by the closing unit 51 configured as described above will be described. The plurality of buckets 52 that repeatedly move and stop intermittently mount the container body 2 with a mounting device (not shown), and fill the container body 2 with jelly using a jelly filling device (not shown). After being carried in, as shown in FIG. 5, it moves immediately below the sheet-like film 4 that moves in synchronization with the bucket 52, reaches the seal bar device 53 and stops. When the bucket 52 stops just below the seal bar device 53, the sheet-like film 4 also stops, and the seal bar device 53 descends, and the heat portion 61 heats the sheet-like film 4.
Is heat-sealed to the jaw portion 3a and the pull portion 3b of the container body 2 to close the open upper surface of the container body 2. Subsequently, as the seal bar device 53 moves up, the bucket 52 and the sheet-like film 4 move to immediately below the next trimming device 54, and when the bucket 52 stops immediately below the trimming device 54, the sheet-like film 4 also stops, The trimming device 54 descends and cuts the sheet-like film 4 heat-sealed to the peripheral portion 3 along the outer edges of the jaw portion 3a and the pull portion 3b of the container body 2 by a cutting blade 63a. Subsequently, as the trimming device 54 moves up, the bucket 52 moves to a position immediately below the next film edge processing device 55.

Next, when the bucket 52 stops immediately below the film edge processing device 55, the film edge processing device 55 is lowered, and the edge of the film 4 of the packaging container 1a is heated by the inclined surfaces 66a and 66b inside the side wall 66. The film 4 is curled 4a, 4b by rubbing from top to bottom. Subsequently, as the film edge processing device 55 is raised, the bucket 52 reaches the next transfer device 57, and the packaging container 1 that has become a product by this is transferred to the transport conveyor 56,
The predetermined packaging is performed.

The present invention is not limited to the above embodiment. For example, a packaging container closed with a film may be applied to other foods such as mizuyokan or sherbet instead of jelly. The present invention may be applied not only to food but also to foods that require airtightness. Further, the pulling portion 3b does not have to be provided on the peripheral portion 3 of the container body 2.

[0025]

As described above, the present invention according to the first aspect has the effect that the film edge does not protrude outward from the peripheral edge portion of the container body, so that the appearance and feel are good and the commercial value is increased.

According to a second aspect of the present invention, in addition to the effect of the first aspect, the curl winding angle with respect to the pull edge is smaller than the curl winding angle with respect to the jaw edge. The curl tip with respect to the jaw edge is formed so as to reach the rear surface of the peripheral part of the container body, while the curl tip with respect to the pull edge is exposed so as not to be caught more than necessary, so that the film edge is smooth during handling. In addition, at the time of opening the lid, an effect is obtained that the finger can be easily picked at the pull portion.

Further, the present invention described in claim 3 has an effect that the filling edge of the packaging container described in claim 1 can be easily and inexpensively processed.

Further, the present invention described in claim 4 has an effect that the filling edge of the packaging container described in claim 2 can be easily and inexpensively processed.

The present invention described in claim 5 has an effect that the film edge processing method described in claim 4 can be realized.

[Brief description of the drawings]

FIG. 1 is a perspective view of a packaging container closed with a film according to an embodiment.

FIG. 2 is a plan view in the embodiment.

FIG. 3 is a sectional view taken along line AA of FIG. 2 in the embodiment;

FIG. 4 is a sectional view taken along line BB of FIG. 2 in the embodiment;

FIG. 5 is a schematic diagram of a lid closing unit in the embodiment.

FIG. 6 is a partially longitudinal enlarged view of the film edge processing apparatus in the embodiment.

FIG. 7 is a perspective view of a curl forming unit according to the embodiment.

FIG. 8 is an enlarged end view taken along line CC of FIG. 7 in the embodiment.

FIG. 9 is an enlarged end view taken along line DD of FIG. 7 in the embodiment;

FIG. 10 is a perspective view of a conventional packaging container.

FIG. 11 is a partially enlarged sectional view of a container body showing a jaw in a conventional example.

FIG. 12 is a partially enlarged cross-sectional view of a container body showing a pull portion in a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Packaging container 2 Container main body 3a Jaw part 3b Pull part 4 Film 4a, 4b curl 51 Lid closing unit 52 Bucket 53 Seal bar device 54 Trimming device 55 Film edge processing device 64 Heater 65 Base 66 Side wall 66a, 66b Inclined surface 67 Curl Molding member 68 Support rod 69 Separation plate

Claims (5)

[Claims] 1. A film is heat-sealed on a jaw formed by extending a peripheral edge of the upper surface of a container body formed to receive a predetermined content therein by opening the upper surface so as to receive a predetermined content therein, and further comprising: A packaging container closed with a film, which is cut at a portion projecting slightly outside the edge to close the open upper surface and curl so that the projecting portion of the film edge covers the jaw edge. 2. A jaw portion having a top surface opened and a peripheral portion of the top surface of a container body formed so as to receive predetermined contents therein and extending a predetermined length outward, and a lid portion extending part of the jaw portion. The film is heat-sealed and cut at a portion slightly outside the jaw edge and the edge of the pull portion to close the open upper surface of the container body. The protruding portion is curled so as to wind the jaw edge and the pull portion edge, respectively, and the curl winding degree for the pull portion is made smaller than the curl winding degree for the jaw portion, and the curl tip for the jaw edge is curled. While reaching the back surface of the jaw, while preventing the curl tip for the pull portion from reaching the back surface of the pull portion, and at the boundary between both curls, the degree of winding is gradually and continuously. A changed, film-closing packaging container. 3. A film is heat-sealed on a jaw formed by extending a predetermined length outward from the upper peripheral edge of a container body having an upper surface opened and containing predetermined contents therein, and then the jaw edge is formed. Cut at the part protruding slightly outside,
A film edge processing method, comprising curling a protruding portion of the film edge of a packaging container having a closed upper surface of the container body so that the film edge is wound around the jaw edge. 4. A jaw portion having a top surface opened so as to receive predetermined contents therein and a jaw portion extending a predetermined length outward from a periphery of the top surface of the container body, and a lid portion extending a part of the jaw portion. For the pull part for, the film is heat-sealed and cut at a part protruding slightly outside from the jaw edge and the pull part edge,
The projecting portion of the film edge, which closes the open upper surface of the container body, is wound around the jaw edge and the pull portion edge, and the degree of curl winding on the pull portion is curl winding on the jaw portion. A film edge processing method characterized in that the degree of winding becomes smaller than the degree and the degree of winding at the boundary between the two curls is gradually and continuously changed. 5. A base having a built-in heater which can be raised and lowered at a position above a packaging container having an open upper surface closed by a film, and fixed to a lower side of the base so that heat can be transferred. Opened obliquely outward from the upper side to the lower side, the inclination angle of the part corresponding to the jaw is larger than the inclination angle of the part corresponding to the pull part, and both inclination angles are gradually continuous. And a substantially cylindrical curl forming member having an inclined surface on the inner side of the side wall, and a support rod lower end supported movably up and down at the center of the lower surface of the base, and located at a lower end inside the curl forming member. 5. The method according to claim 4, further comprising using an edge processing device having a separation plate fixed as described above.