JP5820916B1 - Packaging film - Google Patents

Abstract

An object of the present invention is to provide a packaging film that has excellent tearability by human hands and can be easily opened. Adhesive layers (11a, 11b) are provided at both ends in the longitudinal direction, and are pasted so as to cover the opening of the container in a state where tension is applied along the longitudinal direction in use. The through hole (13A) has a shape having at least one projecting corner (31), and the center line of all the projecting corners (31) of the through hole (13A) is in the tension direction (A). It is inclined with respect to the orthogonal line (B) orthogonal to. [Selection] Figure 2

Description

  The present invention relates to a packaging film, and more particularly to a packaging film that covers an upper surface of a container without a lid having an opened upper surface that contains fruits and vegetables.

  In general, fruits such as grapes and strawberries, and mushrooms such as shiitake mushrooms are placed in a container with an open top and covered with a transparent packaging film. There are many cases.

  Specifically, the packaging film is used by covering the upper surface of an open container with an open top and adhesive layers formed on both side edges of the packaging film adhered and fixed to the outer side wall of the container. Is done. Since this container does not have a lid and the packaging film is a substitute for the lid, the container and the packaging film are more firmly bonded and fixed via the adhesive layer.

  For example, Japanese Patent Laying-Open No. 2012-56602 (Patent Document 1) discloses a wrap sheet for a fruit and vegetable packaging tray excellent in tearability by human hands. The upper edge of the wrap sheet is provided with a substantially V-shaped notch for tearing to open the sheet.

  On the other hand, Japanese Utility Model Laid-Open No. 2-111655 (Patent Document 2) discloses a packaging film for a lunch box in which a large number of small holes for breaking are provided, and the broken holes can be formed by peeling off the tack label. ing. As the shape of the breaking small hole, it is disclosed to use various shapes such as a diamond shape and a heart shape.

JP 2012-56602 A Japanese Utility Model Publication No. 2-111655

  As described above, the packaging film is more strongly bonded and fixed to the container by the adhesive layer. However, if the adhesive film is forcibly removed when the packaging film is opened, the tray may fall over or the contents may fall. On the other hand, if the adhesion is weakened, the packaging film may be peeled off during the distribution process.

  The present invention has been made to solve the above-described problems, and its object is to provide a packaging film that is excellent in tearing by human hands and can be easily opened. Objective.

  For this purpose, the packaging film according to the present invention has a pressure-sensitive adhesive layer at both ends in the longitudinal direction, and is a packaging that is applied to cover the opening of the container in a state where tension is applied along the longitudinal direction in use. The film for use has a through hole having a shape having at least one projecting corner, and the center line of all the projecting corners of the through hole is inclined with respect to an orthogonal line perpendicular to the tension direction. doing.

  Preferably, the through hole is formed in a star shape. Furthermore, a plurality of through holes are formed in the vicinity of the central portion of the film body.

  In the packaging film to be attached so as to cover the opening of the container in a state where the adhesive layer is present at both ends in the longitudinal direction and tension is applied along the longitudinal direction in the use state, at least one or more linear An extension line having a notch and passing through the tip of the linear notch is inclined with respect to an orthogonal line orthogonal to the tension direction.

  Preferably, the linear cut has a first cut and a second cut arranged so as to intersect each other.

  According to the present invention, it is possible to provide a packaging film that has excellent tearability by human hands and can be easily opened.

It is a perspective view which shows the state which covered the film for packaging in embodiment of this invention on the container. It is a top view of the film for packaging in the embodiment of the present invention. It is a layout view of star-shaped through holes in an embodiment of the present invention. FIG. 4 is a layout view of star-shaped through holes for comparison with FIG. 3. It is a figure which shows the other structural example of the through-hole in embodiment of this invention. It is a figure which shows the other structural example of the through-hole in embodiment of this invention. It is a figure which shows the other structural example of the through-hole in embodiment of this invention. It is a figure which shows the other structural example of the through-hole in embodiment of this invention. FIG. 6 is a layout view of cuts intersecting each other in another embodiment of the present invention. FIG. 10 is a layout view of cuts intersecting each other for comparison with FIG. 9. It is a figure which shows the other structural example of the cut in other embodiment of this invention. It is a figure which shows the other structural example of the cut in other embodiment of this invention.

  Embodiments of the present invention will be described in detail with reference to the drawings. In the drawings, the same or corresponding parts are denoted by the same reference numerals and description thereof will not be repeated.

  First, an outline of the packaging film according to the present embodiment will be described with reference to FIGS.

  The packaging film 1 covers the opening 20 of the container 2 without a lid that opens upward. What is packaged in the container 2 is, for example, fruits and mushrooms such as grapes and strawberries.

  The packaging film 1 includes a rectangular transparent film body 10, adhesive layers 11a and 11b provided at both ends in the longitudinal direction, a plurality of air holes 12, and a star-shaped through hole 13A.

  The film body 10 is made of a known synthetic resin film made of polyethylene (PE), polypropylene (PP), or the like. On the surface of the film main body 10, for example, the name of goods such as fruits stored in the container 2, the name of the seller, and the like are printed.

  The adhesive layers 11 a and 11 b are formed in a strip shape at both ends in the longitudinal direction of the film body 10. The adhesive layers 11a and 11b have, for example, a strong adhesive force that does not come off until they reach the consumer's hands from the time of shipment.

  For example, the ventilation holes 12 are provided in a circular shape at four locations in the portion covering the opening 20 of the container 2. The ventilation hole 12 is an air hole for preventing moisture from adhering to the contents such as fruits and vegetables.

  The through holes 13 </ b> A are portions that cover the opening 20 of the container 2, and are provided at two locations between the vent holes 12. The through-hole 13A is formed in a star shape having, for example, five protruding corners 31 with a size that allows the tip of the index finger to be inserted. The through hole 13 </ b> A has a function of tearing the film main body 10 to open the packaging film 1 and a function as an air hole. This through hole 13A may be a cut 14A described later. The through hole 13 </ b> A may not be provided at a position aligned with the vent hole 12. The arrangement of the through holes 13A will be described later.

  To attach the packaging film 1 to the container 2, specifically, the adhesive layer 11a is attached to the left side surface 21 of the container 2, and the adhesive layer 11b is applied to the right side surface 22 of the container 2 while pulling in the opposite direction. paste. Thereby, the film 1 for packaging will be in the state in which moderate tension | tensile_strength was applied along the longitudinal direction (tensile direction A), when affixing on the container 2. FIG. Here, the tension direction A in FIG. 2 is the direction of tension applied along the longitudinal direction of the packaging film 1 in use, and the orthogonal line B is a line orthogonal to the tension direction A.

  In order to open the packaging film 1, for example, the tip of an index finger is inserted into the through-hole 13A of the packaging film 1 to which an appropriate tension is applied, and a tearing force is applied outward. Then, the film main body 10 breaks at a stretch without resistance from any one of the five protruding corner portions 31. Thus, the consumer can easily open the packaging film 1 and remove fruits and vegetables as the contents without applying any force.

  By doing so, when opening the packaging film 1, there is no possibility that the container 2 may fall over, the contents may be damaged, or fall off by forcibly removing the adhesive layers 11 a and 11 b. . Moreover, since it is not necessary to prepare a bag or a cutter in order to open the packaging film 1, opening is easy.

  FIG. 3 is a layout view of star-shaped through holes in the embodiment of the present invention, and FIG. 4 is a layout view for comparison with FIG. With reference to FIGS. 3 and 4, an appropriate arrangement of the through holes 13 </ b> A will be described.

  First, referring to FIG. 3, the through hole 13 </ b> A has five protruding corner portions 31. The center line 32 of the projecting corner 31 is a line obtained by dividing the projecting corner 31 into two. In the through hole 13A, the center lines 32 of all the projecting corners 31 are inclined with respect to the orthogonal line B orthogonal to the tension direction A. Thus, when the packaging film 1 is applied to the container 2, even if tension is applied along the tension direction A, the center line 32 is inclined with respect to the orthogonal line B. Such force is distributed. Therefore, even when a force in the tension direction A is applied to the packaging film 1, the packaging film 1 does not tear from the protruding corner portion 31.

  On the other hand, the through hole 130 in FIG. 4 has five protruding corner portions 131. Of these, the center line 132 of one protruding corner 131 a is parallel to the orthogonal line B. As a result, when a suitable tension is applied along the tension direction A when the packaging film 1 is applied to the container 2, there is a risk that stress concentrates on the projecting corner 131a and the film body 10 is torn from the projecting corner 131a. High nature.

  Therefore, as shown in FIG. 3, by arranging the center lines 32 of all the protruding corner portions 31 of the through holes 13 </ b> A so as to be inclined with respect to the orthogonal line B, there is no possibility that the packaging film 1 is torn.

  Next, another configuration example of the through hole will be described. Only differences from the first embodiment will be described in detail below.

  FIG. 5 is a diagram schematically showing the through hole 13B. The through hole 13 </ b> B has a heart shape and has one protruding corner portion 41. The center line 42 of the projecting corner portion 41 is arranged to be inclined with respect to the orthogonal line B.

  FIG. 6 is a diagram schematically showing the through hole 13C. The through hole 13 </ b> C has a triangular shape and includes three protruding corner portions 51. The center line 52 of the projecting corner 51 is arranged to be inclined with respect to the orthogonal line B.

  FIG. 7 is a diagram schematically showing the through hole 13D. The through hole 13 </ b> D is generally circular and has one protruding corner portion 61. The center line 62 of the projecting corner 61 is arranged to be inclined with respect to the orthogonal line B.

  FIG. 8 is a diagram schematically showing the through hole 13E. The through hole 13 </ b> E has a substantially elliptical shape having two projecting corner portions 71. The center line 72 of the projecting corner 71 is arranged to be inclined with respect to the orthogonal line B.

  FIG. 9 is a layout view of cuts intersecting each other in another embodiment of the present invention, and FIG. 10 is a layout view for comparison with FIG. The arrangement of the cuts 14A will be described with reference to FIGS.

  Referring to FIG. 9, linear cut 14A has a first cut 14a and a second cut 14b, and intersects each other at right angles. An extension line 81 that passes through the distal end portion of the first cut 14a and an extension line 82 that passes through the distal end portion of the second cut 14b are inclined with respect to an orthogonal line B that is orthogonal to the tension direction A. As a result, when the packaging film 1 is applied to the container 2, the extension lines 81 and 82 are perpendicular to the orthogonal line B perpendicular to the tension direction A even if appropriate tension is applied along the tension direction A. Since it inclines, the force in the front-end | tip part of the 1st cut 14a and the 2nd cut 14b is disperse | distributed. Therefore, even when a force is applied in the tension direction A, the packaging film 1 does not tear.

  On the other hand, referring to FIG. 10, a linear cut 140 has a first cut 141a and a second cut 141b and intersects each other at right angles. An extension line 181a passing through the tip of the first cut 141a is parallel to the orthogonal line B orthogonal to the tension. Thereby, when an appropriate tension is applied along the tension direction A, stress concentrates on the first cut 141a, and there is a high risk that the film body 10 is torn from the tip of the first cut 141a.

  In this way, as shown in FIG. 9, the extension line 81 passing through the linear first cut 14a and the extension line 82 passing through the second cut 14b are made to the orthogonal line B orthogonal to the tension direction A. Even when tension is applied in the tension direction A, the packaging film 1 is not torn.

  In the following embodiment, another configuration example of the cut 14 will be described. Only differences from the cut 14A will be described in detail below.

  FIG. 11 is a diagram schematically showing the cut 14B. The cut 14B is one curved linear notch. The extension line 91 passing through the tip of the cut 14B is inclined with respect to the orthogonal line B orthogonal to the tension.

  FIG. 12 is a diagram schematically showing the cut 14 </ b> C. The cut 14C is one straight cutout. The extension line 101 passing through the tip of the cut 14C is inclined with respect to the orthogonal line B orthogonal to the tension.

  In addition, in each said embodiment, although the shape of the through hole was illustrated, the through hole is a shape which has one or more protruding corner | angular parts, Comprising: The centerline of a protruding corner | angular part is with respect to the orthogonal line B If it inclines, it will not be restricted to these shapes.

  Furthermore, in each said embodiment, although the shape of the cut was illustrated, as long as the extended line which passes along the front-end | tip part of a linear cut is inclined with respect to the orthogonal line B, these cuts are these. It is not limited to shape.

  Further, in each of the above-described embodiments, two through holes 13 </ b> A are provided in the vicinity of the central portion of the film body 10, but may be one place or three places or more.

  Although the embodiments of the present invention have been described with reference to the drawings, the present invention is not limited to the illustrated embodiments. Various modifications and variations can be made to the illustrated embodiment within the same range or equivalent range as the present invention.

  DESCRIPTION OF SYMBOLS 1 Packaging film, 2 container, 10 film main body, 11a, 11b adhesion layer, 12 ventilation hole, 13A through hole, 14A cutting, 14a, 14b extension line, 20 opening part, 31 protrusion corner | angular part, 32 center line, 81 , 82 Extension line, A tension direction, B orthogonal line.

Claims (2)

In the packaging film attached to cover the opening of the container in a state where tension is applied along the longitudinal direction in the use state, there are adhesive layers at both ends in the longitudinal direction.
Have at least one or more protruding corners, star, heart-shaped, triangular, has a through hole of any shape selected from the group consisting of circular and elliptical, any of the of the through hole The center line of the projecting corner is inclined with respect to the orthogonal line orthogonal to the tension direction ,
The said through-hole is a film for packaging formed in the center part vicinity of a film main body . The through holes are formed several double, packaging film of claim 1.

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