JP2005075398A - Package - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a package which can prevent wrinkles from occurring on a sheet around a projection. <P>SOLUTION: The invention relates to a package hermetically sealed by heat sealing. The package (1) has strip seals (6, 8, 10 and 12) where overlaid sheets are successively heat-sealed. The strip seal (12) has a sealed region (22) which has been heat-sealed and a non-sealed region (24) which has not been heat-sealed. The projection (26) is formed on the surface of the sheet (2) of the non-sealed region (24). <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a package, and more particularly to a package sealed with a heat seal.

  A package is known in which stacked sheets are sealed by a heat-sealed seal portion, and protrusions such as Braille are formed on the heat-sealed seal portion (for example, Patent Documents 1 and 2). The protrusions are formed by, for example, a pair of heating protrusion forming members that simultaneously perform heating and protrusion formation with the stacked sheets sandwiched from both sides. The protrusions may be formed by a pair of protrusion forming members that form a protrusion by sandwiching the heat-sealed sheet from both sides after heat-sealing with a pair of heating members that sandwich and heat the stacked sheets from both sides. good.

JP-A-11-292091 (paragraphs 10 and 11, FIG. 1) JP-A-11-310249 (paragraphs 10 and 11, FIG. 1)

In the packaging body described above, when the projection is formed on the packaging body at the same time as the packaging body is heated, wrinkles may occur on the sheet around the projection. In particular, if the pair of heating protrusion forming members are separated from the sheet while the cooling time after heating is short, the shrinkage rate between the protrusion and the surrounding sheet is different, and thus the sheet is wrinkled.
In addition, even when the projection is formed by the pair of projection forming members after the package is heat sealed, wrinkles may occur on the sheet around the projection for the same reason as described above. In particular, if the protrusions are formed by a pair of protrusion forming members immediately after being heat-sealed, and the protrusion-forming members are separated from the sheet before the heat-sealed seal part is cooled, wrinkles are generated on the sheet.
In any case, it is necessary to sandwich the sheet between the pair of heating projection forming members or the projection forming members until the heat-sealed seal portion is cooled. This significantly reduces the production rate of the package.

  Then, the objective of this invention is providing the package body which can prevent that a wrinkle arises in the sheet | seat around a projection part.

In order to achieve the above object, a packaging body according to the first aspect of the present invention is a packaging body sealed by heat sealing, and has a belt-like seal portion that continuously heat seals stacked sheets. The belt-shaped seal portion has a heat-sealed seal area and a non-heat-sealed non-sealed area, and a protrusion is formed on the surface of the sheet in the non-sealed area. .
In the packaging body configured as described above, the belt-shaped seal portion has a non-sealed region that is not heat-sealed in part, rather than being heat-sealed as a whole. That is, when the package is heat sealed, the non-sealed area is not heated and is in a cold state. Protrusions are formed in the cooled non-sealed area. In the conventional package, wrinkles are generated in the sheet around the protrusion due to the heat seal, whereas in the package of the present invention, the place where the protrusion is formed is not affected by the heat seal. In this way, it is possible to prevent the sheet around the protrusion from being wrinkled. Further, since the protrusion is formed in the non-sealed region that has already been cooled, the heating protrusion forming member or the protrusion forming member can be separated from the sheet at an early stage. As a result, the production speed of the package can be increased in the production facility for the specific package.
As is clear from the above description, the belt-like seal portion does not need to be heat-sealed as a whole, and it is sufficient that the sheet is continuously sealed. Further, the belt-like seal portion may be linear or curved. The number of non-sealing regions, the arrangement with respect to the sealing regions, etc. are arbitrary. The non-sealed area need not be surrounded by the sealed area.

In the package of the present invention, preferably, the non-sealed region is surrounded by the sealed region.
In the packaging body configured in this way, the entire periphery of the non-sealed region can be closed.

In the package of the present invention, preferably, a continuous seal portion that continuously heat seals the stacked sheets, and a continuous seal portion that is disposed adjacent to the continuous seal portion and is separated from the package body. It has a chuck portion that constitutes an openable and closable opening.
In the package body configured as described above, after the continuous seal portion is cut off from the package body, the band-shaped seal portion on which the protrusion is formed remains on the package body. In particular, when the protruding portion constitutes Braille, the information expressed by the Braille can be left in the package even after the continuous seal portion is cut off.

In order to achieve the above object, a package according to the second aspect of the present invention is a package sealed by heat sealing, and in order to seal the package, the stacked sheets are continuously formed. It has a seal part to be heat-sealed, and a non-seal part that is not heat-sealed disposed on the side opposite to the sealing side of the seal part, and a protrusion is formed on the surface of the sheet of the non-seal part It is characterized by.
In the package of the present invention configured as described above, when the package is heat-sealed, the non-sealed portion is not heated and is in a cooled state. A protrusion is formed on the cooled non-sealed portion. In the conventional package, wrinkles are generated in the sheet around the protrusion due to the heat seal, whereas in the package of the present invention, the place where the protrusion is formed is not affected by the heat seal. In this way, it is possible to prevent the sheet around the protrusion from being wrinkled. Moreover, since the protrusion is formed on the non-sealed portion that is already cooled, the heating protrusion forming member or the protrusion forming member can be separated from the sheet at an early stage. As a result, the production speed of the package can be increased in the production facility for the specific package.

In the package of the present invention, preferably, the package further includes a second seal portion arranged so as to surround the non-sealed portion together with the seal portion, and continuously heat-sealing the stacked sheets. The package described.
In the package of the present invention configured as described above, the entire periphery of the non-seal portion can be closed.

  As described above, the package according to the present invention can prevent wrinkles from occurring on the sheet around the protrusion.

  Hereinafter, an embodiment of a package according to the present invention will be described with reference to the drawings. First, with reference to FIG. 1, 1st Embodiment of the package by this invention is described. FIG. 1 is a plan view of a food packaging body according to the first embodiment of the present invention.

  As shown in FIG. 1, the package 1 includes two sheets 2 that are stacked and heat-sealed with each other, and a seal chuck member 4 that is disposed between the two sheets 2. The two sheets 2 have a rectangular shape, and the entire circumference thereof is heated by four continuous belt-like heat seal portions, that is, the upper seal portion 6, the right seal portion 8, the left seal portion 10 and the lower seal portion 12. Sealed, whereby the package 1 is sealed. A portion sandwiched between the two sheets 2 and surrounded by the four heat seal portions 6, 8, 10, 12 forms a sealed space 14. The sheet 2 is made of a heat-bondable plastic material. The upper seal portion 6 and the lower seal portion 12 are wider than the right seal portion 8 and the left seal portion 10. The upper seal portion 6 is provided with a hole 16 for suspending the packaging body 1. The right seal 8 part and the left seal part 10 are provided with a notch 18 for facilitating the separation of the upper seal part 6 from the package 1.

  The seal chuck member 4 is disposed at a distance from the upper seal portion 6 and substantially parallel thereto. The seal chuck member 4 extends from the right seal portion 8 to the left seal portion 10 and is thermally bonded to the two sheets 2. The seal chuck member 4 functions as an openable / closable opening of the package 1 by separating the upper seal 6 from the package.

  The lower seal portion 12 includes a heat sealed region 22 and a non-sealed region 24 that is not heat sealed. The non-seal area 24 is rectangular. The non-seal area 24 is surrounded by the seal area 22. On the surface of the sheet 2 in the non-sealed region 24, a protrusion 26 constituting Braille is formed. The back side of the protrusion 26 is a recess.

  Next, a second embodiment of the package according to the present invention will be described with reference to FIG. FIG. 2 is a plan view of a food packaging body according to the second embodiment of the present invention. The second embodiment is common to the first embodiment except for the lower seal portion 12 of the first embodiment. Accordingly, common components are denoted by the same reference numerals, description thereof is omitted, and only different portions will be described below.

  As illustrated in FIG. 2, the package 30 includes two rectangular sheets 2 as in the first embodiment. The two sheets 2 are heat-sealed by four continuous belt-like heat seal portions, that is, an upper seal portion 6, a right seal portion 8, a left seal portion 10 and an inner lower seal portion 32, whereby a package body is obtained. 30 is sealed. A non-sealed portion 34 that is not heat-sealed is disposed on the side opposite to the sealed side of the inner lower seal portion 32. Projections 26 constituting Braille are formed on the surface of the sheet 2 of the non-seal portion 34.

  Next, with reference to FIG. 3, an outline of a packaging apparatus including a heat seal projection forming apparatus that heat-seals the lower seal portion 12 of the food packaging body 1 of the first embodiment to form the projection portion 26 will be described. To do. FIG. 3 is a plan view of the packaging device.

  As shown in FIG. 3, the packaging device 40 includes a rotary transport body 46 that rotates intermittently around an axis 42 in the direction of an arrow 44, and 10 pairs of counter-mounts that are attached around the rotary transport body 46 at equal intervals. A grip 48 is provided. The counter grip 48 is also rotated by the rotation of the rotary conveyance body 46. The rotary conveyance body 46 stops when a pair of opposing grips 48 rotates to the position of the adjacent pair of opposing grips 48. The pair of opposing grips 48 can grip the package 1 from the side and from both sides. The distance between the pair of grips 48 can be narrowed or widened. The packaging device 40 further includes a packaging body supply device 50a that supplies the packaging body 1 in which the lower seal portion 12 is not heat-sealed, and a printing device 50b that prints the date and the like on the packaging body 1 held by the opposing grip 48. An opening device 50c that opens the lower seal portion 12 that is not heat-sealed to form an opening, a filling device 50d that fills the packaging body 1 with contents such as sprinkling, and the packaging body 1 is shaken to lower the contents downward A shaking device 50e to be moved, a suction device 50f for sucking powdered contents adhering to the opening of the package 1, and a heat seal protrusion forming device 60 for heat-sealing the lower seal portion 12 to form a protrusion. Have. The heat seal projection forming apparatus 60 includes a heat seal portion 62 that heat seals the lower seal portion 12 and a projection formation portion 64 that forms a projection portion. Since the devices 50a to 50f other than the heat seal protrusion forming device 60 are of the prior art, their detailed description is omitted.

  Next, the operation of the packaging device 40 will be described. The bag-shaped packaging body 1 in which the lower seal portion 12 is not heat-sealed is supplied to the opposing grip 48 of the rotary conveyance body 46 by the packaging body supply device 50a. The opposing grip 46 grips the supplied packaging body 1 from the side and from both sides upside down (see FIG. 4). The lower seal portion 12 of the bag-shaped package 1 constitutes an upward opening. The rotary conveyance body 46 is rotated, the packaging body 1 is conveyed to the printing apparatus 50b, and the date or the like is printed on the packaging body 1 by the printing apparatus 50b. Next, the rotary transport body 46 is rotated to transport the printed package 1 to the opening device 50c. The space | interval of the opposing grip 48 is narrowed, the lower seal part 12 which is not heat-sealed is opened, and an upward opening is formed. Subsequently, the rotary conveyance body 46 is rotated, and the packaging body 1 is conveyed sequentially to the filling device 50d, the shaking device 50e, and the suction device 50f. In the filling device 50d, the contents such as sprinkles are filled from the upward opening, in the shaking device 50e, the packaging body 1 is shaken to move the contents downward, and in the suction device 50f, the powder adhered to the opening of the packaging body 1 Inhale the contents of the shape. If powdered contents adhere to the opening, that is, the lower seal portion 12, the lower seal portion 12 cannot be thermally bonded later. Next, the rotary conveyance body 46 is rotated, and the packaging body 1 is conveyed to the heat seal protrusion forming device 60. The lower seal portion 12 is heat-sealed by the heat seal protrusion forming device 60, and the protrusion 26 is formed there.

Next, the heat seal protrusion forming device 60 will be described in detail with reference to FIGS. FIG. 4 is a front view of the heat seal protrusion forming apparatus. FIG. 5 is a side sectional view of the heat seal portion. FIG. 6 is a side sectional view of the protrusion forming portion.
As described above, the heat seal protrusion forming device 60 includes the heat seal portion 62 and the protrusion forming portion 64. Further, the rotary conveyance body 46 that conveys the package 1 from the heat seal portion 62 to the protrusion formation portion 64 also constitutes a part of the heat seal protrusion formation device 60.

  As shown in FIGS. 4 and 5, the heat seal part 62 includes a pair of heating members 66 for heat-sealing the lower seal part 12 of the package 1 from both sides, and a pair for opening and closing the heating member 66. The heating member arm 68 is provided. Each heating member arm 68 can swing around a swing shaft 70 by a drive device (not shown). The heating member 66 is heated to a predetermined temperature by a heating source (not shown) and a heating control device (not shown). Each heating member 66 has a heat sealing surface 72 for heat-sealing the packaging body 1 from both sides, and a non-heat sealing surface 74 adjacent thereto. In the present embodiment, the non-heat sealing surface 72 is a concave surface that is recessed from the heat sealing surface 72. The concave surface 74 is surrounded by the heat sealing surface 72. The contour of the concave surface 74 is a rectangle.

As shown in FIGS. 4 and 6, the protrusion forming portion 64 includes a pair of cooling members 80 for cooling the packaging body 1 by sandwiching the lower seal portion 12 from both sides, and a protrusion sandwiching the lower seal portion 12 from both sides. It has a pair of projection forming members 82 a and 82 b for forming the portion 26, and a pair of projection forming arms 84 for opening and closing the cooling member 80 and the projection forming member 82. Each protrusion forming arm 84 can swing around a swing shaft 86 by a driving device (not shown). When the rotary transport body 46 is rotated and the packaging body 1 is transported from the heat seal portion 62 to the protrusion forming portion 64, the portion of the packaging body 1 facing the heat seal surface 72 in the heat seal portion 62, that is, the packaging body. One heat seal region 22 faces the cooling member 80, and the portion of the heat seal portion 62 that faces the concave surface 74, that is, the non-sealed region 24 that is not heat sealed faces the protrusion forming member 82. The cooling member 80 is a metal plate.
FIG. 7 is a perspective view of a pair of protrusion forming members. One protrusion forming member 82 a has a protrusion 88, and the other protrusion forming member 82 b has a recess 90 that fits into the protrusion 88. The positions where the pair of protrusion forming members 82a and 82b sandwich the lower seal portion 12 and the positions where the pair of cooling members 80 sandwich the lower seal portion 12 may be the same, or are shifted as shown in FIG. Also good.
In addition, a control device (not shown) is provided that operates the rotating conveyance body 46, the driving device for the heating member 66, the driving device for the protrusion forming member 64, and the like as described later.

Next, the operation of the heat seal projection forming apparatus will be described.
The pair of heating members 66 of the heat seal portion 62 are kept open. The rotary conveyance body 46 is rotated, and the packaging body 1 is conveyed to the heating seal portion 62 of the heat seal protrusion forming device 60, and the lower seal portion 12 of the packaging body 1 that is not heat sealed is disposed between the pair of heating members 66. To do. The heating member arm 68 is operated, the heating member 66 is closed, and the lower seal portion 12 of the package 1 is heat-sealed. Specifically, in the lower seal portion 12, a region sandwiched between the heat sealing surfaces 72 of the heating member 66 is heat sealed, but a region facing the concave surface 74 of the heating member 66 is not heat sealed. The heating temperature is, for example, 140 to 170 ° C., and the heating time is, for example, 1 to 4 seconds. The heating temperature and the heating time vary depending on the production rate, the bag material, the filling amount of the contents, and the like. After heat sealing, the heating member 66 is opened.
Next, the pair of cooling members 80 and the pair of protrusion forming members 82a and 82b of the protrusion forming portion 64 are kept open. The rotary conveyance body 46 is rotated, and the heat-sealed packaging body 1 is conveyed to the protrusion forming portion 64. The seal region 22 of the lower seal portion 12 is disposed between the pair of cooling members 80, and the non-seal region 24 is disposed between the pair of protrusion forming members 82a and 82b. The projection forming arm 84 is operated to close the cooling member 80 and the projection forming members 82a and 82b. The cooling member 80 radiates heat from the seal region 22. The protrusions 26 are formed in the non-sealed region 24 by the protrusion forming members 82a and 82b. The cooling member 80 and the protrusion forming members 82a and 82b are opened after a sufficient time for forming the protrusion 26 on the lower seal portion 12, for example, after 1 to 4 seconds. Thereby, the protrusion part 26 can be formed in the lower seal part 12 without generating wrinkles in the package 1 at all. The cooling time varies depending on the production speed, the bag material, the filling amount of the contents, and the like. In contrast, as in the prior art, the lower sealing portion 12 of the package 1 is heat-sealed using the heating member 66 that does not have the concave surface 74, and then the cooling member 80 and the protrusion forming member 82 are used for lowering. If the seal portion 12 is sandwiched and opened after the same time as described above, wrinkles will occur around the protrusion.

  Although the heat seal projection forming device 60 that forms the package 1 of the first embodiment has been described above, the same applies to the case of forming the package 30 of the second embodiment. In that case, the heating member 66 has a heat sealing surface 72 that forms the inner lower seal portion 32 of the packaging body 30 and a concave surface 74 that faces the non-sealing portion 34 of the packaging body 30.

As mentioned above, although the food packaging body which is embodiment of this invention was demonstrated, this invention is not limited to this embodiment, A various change is possible within the range of the invention described in the claim. Needless to say, they are also included in the scope of the present invention.
Although the food packaging bodies 1 and 30 are illustrated in the above-described embodiment, the packaging body is not limited to the food packaging body, and may be a packaging body for detergents, cosmetics, or the like. Further, the shape of the packaging bodies 1 and 30 may be a planar form as in the above-described embodiment, or may be a three-dimensional form.
Moreover, although the strip | belt-shaped seal | stickers 6, 8, 10, 12 and the inner lower seal | sticker part 32 of the packaging bodies 1 and 30 of 1st Embodiment and 2nd Embodiment are linear, even if it is curvilinear. good.
Moreover, although the non-seal area | region 24 of the package 1 of 1st Embodiment was enclosed by the seal | sticker area | region 22, it does not need to be enclosed. The number, shape, and arrangement of the non-sealed regions 24 are arbitrary.
Further, a non-sealed region or a non-sealed portion may be provided at the corner of the package.
The number, shape and arrangement of the concave surfaces 74 with respect to the heat sealing surface 72 of the heating member 66 are arbitrary.
Further, in the package 30 of the second embodiment, an outer seal portion that sandwiches the non-seal portion 34 together with the inner lower seal portion 32 may be provided. In this case, the non-seal portion 34 is surrounded by the inner lower seal portion 32, the right seal portion 8, the left seal portion 10, and the outer lower seal portion. In this case, the heating member 66 of the heat seal protrusion forming device 60 only needs to have the heat seal surface 72 that forms the inner lower seal portion 32 and the outer lower seal portion.

In the heat seal protrusion forming device 60 described above, the cooling member 80 is provided in the protrusion forming portion 64 in order to promote heat dissipation in the heat seal area. However, the cooling member 80 is omitted and the heat seal area is air-cooled. Also good.
In the heat seal projection forming device 60 described above, the concave surface 74 is provided on the heating member 66 as the non-heat seal surface 74, but a heat insulating surface insulated from the heat seal surface may be provided instead of the concave surface 74. . In this case, the material constituting the heat insulating surface may be a heat insulating material different from the material constituting the heat sealing surface. The heat insulating material may be forcibly cooled. The heat insulating surface may be on substantially the same surface as the heat sealing surface 72 or may be on a different surface. By using the heat insulating surface, the same effect as when the concave surface 72 is used can be obtained. Further, a protrusion forming portion similar to the pair of protrusion forming members may be provided on the heat insulating surface, and heat sealing and protrusion forming may be performed simultaneously. In this case, the rotary conveyance body 46 becomes unnecessary.
In addition, a cooling unit having a pair of second cooling members for cooling by sandwiching the stacked sheets from both sides is added between the heat sealing unit 62 and the projection forming unit 64 of the heat seal projection forming apparatus 60 described above. It may be provided. In this case, the rotary conveyance body 46 transfers the stacked sheets from the heating member 66 to the second cooling member so that the portion of the sheet heat-sealed by the heat sealing surface 72 of the heating member 66 is disposed between the second cooling members. After being conveyed to the cooling member, the stacked sheets are removed from the second cooling member so that the portion of the sheet that has been opposed to the non-thermal sealing surface 74 of the heating member 66 is disposed between the protrusion forming members 82a and 82b. It is conveyed to the protrusion forming members 82a and 82b. In this case, after the heated stacked sheets are cooled by the cooling unit, the projections are formed by the projection forming unit 64, so that the influence of heat on the projections 26 is reduced and wrinkles are generated around the projections 26. Can be reliably prevented. Further, the stacked sheets are cooled by the second cooling member in the cooling unit, and then air-cooled or cooled by the cooling member 80 in the protrusion forming unit. In particular, when the time required for cooling the stacked sheets is longer than the time required for forming the protrusions, the entire cooling time can be distributed between the cooling time in the cooling part and the cooling time in the protrusion forming part. In this case, while one set of stacked sheets is cooled by the cooling unit, the other set of stacked sheets can be cooled by the protrusion forming unit, so that the production speed of the package can be increased. .

It is a top view of the package by the 1st Embodiment of the present invention. It is a top view of the package by the 2nd Embodiment of this invention. It is a schematic plan view of the packaging apparatus for packaging the package body by this invention. It is a schematic front view of the protrusion formation apparatus which heat-seals the package body by this invention, and forms protrusion. It is side surface sectional drawing of the heat seal part of a heat seal protrusion formation apparatus. It is side surface sectional drawing of the protrusion formation part of a heat seal protrusion formation apparatus. It is a perspective view of a protrusion formation member.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1, 30 Package 2 Sheet 4 Seal chuck member 6 Upper seal part 12 Lower seal part 22 Seal area 24 Non-seal area 26 Projection part 32 Inner lower seal part 34 Non-seal part

Claims (5)

A package sealed by a heat seal,
A belt-like seal portion for continuously heat-sealing the stacked sheets, the belt-like seal portion having a heat-sealed seal region and a non-heat-sealed non-sealed region; A package having a projection formed on a surface of a sheet in a region.   The packaging body according to claim 1, wherein the non-sealed region is surrounded by the sealed region.   Furthermore, a second belt-shaped seal portion that continuously heat seals the stacked sheets, and the second belt-shaped seal portion that is disposed adjacent to the second belt-shaped seal portion and separates the second belt-shaped seal portion from the package. The packaging body according to claim 1, further comprising: a chuck portion that constitutes an opening / closing opening of the packaging body. A package sealed by a heat seal,
A surface of the sheet of the non-sealed portion, comprising: a seal portion that continuously heat seals the stacked sheets; and a non-sealed portion that is not heat-sealed disposed on a side opposite to the sealing side of the seal portion. A package having a projection formed on the package.   5. The package according to claim 4, further comprising a second seal portion disposed so as to surround the non-sealed portion together with the seal portion and continuously heat-sealing the stacked sheets.

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