JP2010215272A - Film sheet for packaging - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To separate packaging films easily and certainly one by one in a continuous web packaging film sheet from which the packaging film can be separated. <P>SOLUTION: In the web packaging film sheet 1 in which the packaging film 3 is continuous and can be separated by a perforation 5, the center part in the width direction of the packaging film sheet of the perforation 5 projects toward the drawing side from a core material 2 from both ends in the width direction of the packaging film sheet 1 in the longitudinal direction of packaging film sheet 1. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

  The present invention relates to a packaging film sheet in which a packaging film is continuously separated.

  Conventionally, food products such as rice cakes and rice cakes are sold in transparent plastic containers. Such a plastic container has an opening surface. After the food product is put through the opening surface, the opening surface is wrapped with a packaging film so that the food product is not spilled from the plastic container. Is done.

  Such a packaging film is produced, for example, by using a web-like packaging film sheet in which a packaging film is continuous and breaking the packaging film sheet with heat. However, when the packaging film sheet is broken into individual packaging films by heat, a power source for generating heat is required, and smoke and odor are generated when the packaging film sheet is broken. End up.

  Here, it is considered to use a packaging film sheet in which the packaging film is separable by a perforation, and to separate the packaging film sheet into one packaging film by a perforation (for example, (See Patent Document 1).

  FIG. 4 is a view showing an example of a conventional packaging film sheet, in which (a) is an external perspective view, and (b) is a surface view.

  As shown in FIG. 4, the packaging film sheet in this conventional example has a continuous web shape in which a plurality of packaging films 103 made of a transparent material are separable by a perforation 105, and is wound around a core material 102. ing. On one surface of the packaging film sheet 101, an adhesive is applied along both widthwise ends of the packaging film sheet 101, whereby a region along both widthwise ends of the packaging film sheet 101 is applied. Is the sticking part 104. The perforation 105 is linearly formed in the width direction of the packaging film sheet 101 so as to connect both ends in the width direction of the packaging film sheet 101.

  The packaging film sheet 101 configured as described above is separated into one packaging film 103 by breaking the perforation 105. Therefore, there is no need for a power source for generating heat, and no smoke or odor is generated when the packaging film sheet 101 is separated into the packaging films 103 one by one. The packaging film 103 thus separated one by one is then applied to the opening surface of the plastic container in which the foodstuff is put, and is attached to the plastic container by the attaching part 104 as described above. Will be used.

JP-A-9-58743

  As described above, the packaging film sheet 101 shown in FIG. 4 is separated into the packaging films 103 one by one by breaking the perforation 105.

  FIG. 5 is a view for explaining the operation when the packaging film sheet 101 shown in FIG. 4 is separated into the packaging films 103 one by one.

  When the packaging film sheet 101 shown in FIG. 4 is separated into individual packaging films 103, the packaging film 103 to be separated into one sheet is held at both ends in the width direction, and the packaging film 103 is placed in front. The packaging film 103 is pulled downward with the holding film (not shown) supporting the packaging film 103 continuous to the packaging film 103 via the perforation 105 so as not to move downward. As a result, the perforation 105 is broken and the packaging film sheet 101 is separated, so that a force in the direction of arrow A in FIG. 5A is applied to the packaging film sheet 101.

  Therefore, the force for separating the packaging film sheets 101 one by one is applied to both ends of the perforation 105 and then in the direction of arrow B in FIG. As shown in FIG. 5 (b), the rupture area of the sheet does not follow the perforation 105, but shifts to the side of the packaging film 103 separated into one sheet, and the packaging film 103 breaks inside. There is a point.

  The present invention has been made in view of the problems of the prior art as described above, and is a web-like packaging film sheet in which a packaging film is continuously separated by a separation line. It is an object of the present invention to provide a packaging film sheet that can be easily and reliably separated for each sheet of packaging film.

In order to achieve the above object, the present invention provides:
In a continuous web-like packaging film sheet in which the packaging film is separable by a separation line,
The separation line has an arch shape in which the central portion in the width direction protrudes to one side in the longitudinal direction of the packaging film sheet rather than both ends in the width direction of the packaging film sheet.

  In the present invention configured as described above, holding both ends in the width direction of the packaging film to be separated into one sheet, pulling the packaging film toward the front side, or separating the packaging film via a separation line. The packaging film sheet is separated into individual packaging films by a separating line by pulling the packaging film downward while supporting the continuous packaging film so that it does not move downward by the holding member. When trying to do so, the force to separate the packaging film sheet is first applied to both ends of the separation line and then toward the center of the separation line. For packaging in a state where the packaging film is supported by the holding member so that it does not move downward by the holding member by pulling the packaging film to the near side or through the separating film via the separation line As the film is pulled downward, force is applied in the direction of the front side, so the separation area of the packaging film sheet is the front side of the line connecting both ends of the separation line, that is, for packaging that separates It shifts to the film side. However, since the separation line has an arch shape in which the central portion in the width direction protrudes to one side in the longitudinal direction of the packaging film sheet rather than both ends in the width direction of the packaging film sheet, When trying to separate the packaging film sheet as the side, even if the separation region is shifted to the near side with respect to the line connecting the both ends of the separation line, the region is arched from both ends in the width direction of the packaging film sheet. Since the separation line continues, the packaging film sheet is easily and reliably separated by the separation line.

  As described above, in the present invention, in the web-like packaging film sheet in which the packaging film is separable by the separation line, the separation line is at the center in the width direction rather than at both ends in the width direction of the packaging film sheet. Is an arch shape that protrudes to one side in the longitudinal direction of the packaging film sheet. Therefore, if the packaging film sheet is separated with this projecting side as the front side, the packaging film sheet has both ends of the separation line. Even if the separation area is shifted to the near side with respect to the line connecting both ends of the separation line due to the direction of the force for separating the packaging film sheet, the area of the packaging film sheet is Arch-shaped separation lines continue from both ends in the direction, whereby the packaging film sheet can be easily and reliably separated by the separation lines.

It is a figure which shows one Embodiment of the film sheet for packaging of this invention, (a) is an external appearance perspective view, (b) is a surface view. It is a figure for demonstrating the effect | action at the time of isolate | separating the packaging film sheet shown in FIG. 1 into the packaging film for every sheet. It is a figure which shows the use condition of the film for packaging shown in FIG. It is a figure which shows an example of the conventional film sheet for packaging, (a) is an external appearance perspective view, (b) is a surface view. It is a figure for demonstrating the effect | action at the time of isolate | separating the packaging film sheet shown in FIG. 4 into the packaging film for every sheet.

  Embodiments of the present invention will be described below with reference to the drawings.

  FIG. 1 is a view showing an embodiment of the packaging film sheet of the present invention, in which (a) is an external perspective view, and (b) is a surface view.

  As shown in FIG. 1, the packaging film sheet in this embodiment has a continuous web shape in which a plurality of packaging films 3 made of a transparent material are separable by a perforation 5 serving as a separation line. It is wrapped around A pressure-sensitive adhesive is applied along the widthwise ends of the packaging film sheet 2 to the inner surface of the packaging film sheet 1 that is wound around the core material 2. The area along the width direction both ends is the sticking part 4. The pressure-sensitive adhesive for constituting the sticking part 4 is exposed on the inner surface of the packaging film sheet 1 wound around the core material 2, but the packaging film sheet 1 is wound around the core material 2. In this state, since the packaging film sheet 1 is opposed to the pressure-sensitive adhesive on the inside of the wound state around the core material 2, the pressure-sensitive adhesive is not dried and the packaging film sheet 1 is cored. The material 2 can be pulled out of the wound state. The perforation 5 is formed so as to connect both end portions in the width direction of the packaging film sheet 1, but the center portion in the width direction is longer than the both end portions in the width direction of the packaging film sheet 1 in the longitudinal direction of the packaging film sheet 1. In FIG. 2, the arch shape protrudes to the side from the core member 2.

  When the packaging film sheet 1 configured as described above is separated into individual packaging films 3, the packaging film sheet 1 has both ends in the width direction of the packaging film 3 to be separated into one piece. The packaging film 3 is supported in such a manner that the packaging film 3 that is continuous with the packaging film 3 via the perforation 5 is supported by a holding member (not shown) so as not to move downward. By pulling downward, the perforation 5 is broken and the packaging film sheet 1 is separated.

  Below, the effect | action at the time of isolate | separating the film sheet 1 for packaging mentioned above into the film 3 for packaging for every sheet | seat is demonstrated.

  FIG. 2 is a view for explaining the operation when the packaging film sheet 1 shown in FIG. 1 is separated into the packaging films 3 one by one.

  When the packaging film sheet 1 shown in FIG. 1 is separated into the packaging films 3 one by one, as described above, the packaging film 3 to be separated into one sheet has both ends in the width direction in its hand. The packaging film 3 is lowered in a state where the packaging film 3 is pulled to the near side or the packaging film 3 continuous through the perforation 5 is supported by the holding member so as not to move downward. Since the perforation 5 is broken and the packaging film sheet 1 is separated by pulling, the packaging film sheet 1 is subjected to a force in the direction of arrow A in FIG. .

  The force for separating the packaging film sheets 1 one by one is first applied to both end portions of the perforation 5 and then directed in the direction of arrow B in FIG. This is because, as described above, a force is applied to the packaging film sheet 1 in the direction of arrow A in FIG. 2 (a), whereby the separation region of the packaging film sheet 1 is: From both ends of the perforation 5, it shifts to the near side with respect to the line connecting the both ends, that is, the side of the packaging film 3 to be separated.

  However, in the packaging film sheet 1 of the present embodiment, the perforation 5 for separating the packaging film sheet 1 into the packaging films 3 one by one is wider than both ends in the width direction of the packaging film sheet 1. Since the central portion in the direction has an arch shape that protrudes to the side from which the core film 2 is pulled out in the longitudinal direction of the packaging film sheet 1, the separation region of the packaging film sheet 1 connects both ends of the perforation 5. Even if it is shifted to the near side with respect to the line, since the arch-like perforation 5 continues from both ends in the width direction of the packaging film sheet 1 as shown in FIG. As a result, the packaging film sheet 1 is easily and reliably separated into the packaging films 3 one by one at the perforation 5.

  As described above, in this embodiment, the perforation 5 for separating the packaging film sheet 1 into the packaging film 3 one by one is packaged at the center in the width direction rather than at both ends in the width direction of the packaging film sheet 1. Since the film sheet 1 has an arch shape protruding in the longitudinal direction from the core member 2 in the longitudinal direction, the packaging film sheet 1 is separated from both ends of the perforation 5 and then packaged. Even if the separation region shifts to the near side with respect to the line connecting the both ends of the perforation 5 depending on the direction of the force separating the film sheet 1, the region has an arch shape from both ends in the width direction of the packaging film sheet 1 The perforation 5 continues, so that the perforation 5 continues to break, and the packaging film sheet 1 is easily and surely separated into one packaging film 3 at the perforation. It can be.

  The packaging films 3 separated one by one as described above are then used after being stuck to a plastic container in which food is placed.

  FIG. 3 is a diagram illustrating a usage state of the packaging film 3 illustrated in FIG. 1.

  The packaging film 3 separated from the packaging film sheet 1 one by one as described above is applied to the opening surface of the plastic container 6 in which the foodstuff 7 is put, as shown in FIG. 4 is used by being attached to a plastic container. Thus, the food container 7 is wrapped with the packaging film 3 separated from the packaging film sheet 1 shown in FIG. Will not spill from the plastic container 6.

DESCRIPTION OF SYMBOLS 1 Film sheet for packaging 2 Core material 3 Film for packaging 4 Adhering part 5 Perforation 6 Plastic container 7 Foodstuff

Claims (1)

In a continuous web-like packaging film sheet in which the packaging film is separable by a separation line,
The packaging is characterized in that the separation line has an arch shape in which the central portion in the width direction protrudes to one side in the longitudinal direction of the packaging film sheet, rather than both ends in the width direction of the packaging film sheet. Film sheet.

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