JP2018052532A - Package and long film - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a package which can be opened easily by allowing easy cutting of a film packaging material and prevents the film packaging material from being easily torn in a circulation process.SOLUTION: A package 10 includes: an object 11 to be packaged; and a film packaging material 12 having a heat-shrinkable film base material 13 and for packaging the object 11. The film packaging material 12 includes: an opening part 15 that exposes a part of the object 11; a plurality of first cutting auxiliary lines 20 formed in a direction crossing an opening edge 16 of the opening part 15; and two or more second cutting auxiliary lines that are formed from a plurality of through-holes arranged side by side in a direction along the opening edge 16, and are formed at an interval with each other. The first cutting auxiliary lines 20 are located in a first region R1 which is an edge part of the opening part 15 and whose one end is the opening edge 16. Each second cutting auxiliary line is located in a second region R2 which is connected to the other end of the first region R1 on the opposite side from one end of the first region R1.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a package and a long film.

  2. Description of the Related Art Conventionally, a package using a heat-shrinkable film wrapping material is widely known as an integrated package for collectively packaging items (packaged items) such as boxes, cans, and bottles. The film wrapping material has an opening that is molded into a cylindrical body to wrap a packaged object and exposes a part of the packaged object. Such a package is generally opened by placing a finger on the edge of the opening and pulling the film packaging material to cut the film packaging material from the edge of the opening.

  Patent Document 1 discloses a shrink wrapping body in which auxiliary cutting lines are formed around the opening of the film wrapping material in order to facilitate the cutting of the film wrapping material. In the package of Patent Document 1, the auxiliary cutting line extends radially from the edge of the opening with a length that does not reach the top surface of the package, and the film wrapping material is cut using the auxiliary cutting line as an opening when opening. The

Japanese Patent Laid-Open No. 2006-60535

  By the way, a packaging body using a film wrapping material is required to be easy to cut and open the film wrapping material, and on the other hand, it is required that the film wrapping material is not easily broken in the distribution process. In the case of the package disclosed in Patent Document 1, since the auxiliary cutting lines are formed radially from the edge of the opening, good openability is expected, but the film packaging material breaks during the distribution process. The problem of being easy is assumed.

  The package according to the present invention includes a packaged article and a film packaging material that has a heat-shrinkable film base material and packages the packaged article. A plurality of first cutting auxiliary lines formed in a direction intersecting the opening edge of the opening, and a plurality of through holes arranged in a direction along the opening edge, and spaced apart from each other. The first cutting auxiliary line is located in a first region that is an edge of the opening with the opening edge as one end, The second cutting auxiliary line is located in a second region that is continuous with the first region.

  The long film according to the present invention is a non-shrinkable long film that serves as the film wrapping material of the packaging body, and includes a long film base that serves as the film base. A cutting auxiliary line is formed in the width direction of the long film base at the edge in the width direction of the long film base serving as the first region, and constitutes each second cutting auxiliary line. Each of the through holes is formed side by side in the longitudinal direction of the long film substrate in a region that is connected to the edge in the width direction of the long film substrate serving as the second region. It is characterized by.

  According to one embodiment of the present invention, it is possible to provide a package body in which the film packaging material can be easily cut and easily opened, and the film packaging material is not easily broken in the distribution process.

It is a perspective view of the package which is an example of embodiment. In the package which is an example of embodiment, it is a figure which expands and shows a part of periphery of the opening part of a film packaging material. It is a figure which shows the film packaging material which is an example of embodiment. It is a figure for demonstrating the manufacturing method of the package which is an example of embodiment. It is a figure which shows a mode that the package which is an example of embodiment is opened. It is a perspective view of the package which is another example of embodiment. It is a principal part enlarged view of the film packaging material which is another example of embodiment. It is a perspective view of the package which is another example of embodiment.

  Hereinafter, an example of an embodiment of a film wrapping material and a package according to the present invention will be described in detail with reference to the drawings.

  FIG. 1 is a perspective view of a package 10 that is an example of an embodiment. In the following, for convenience of explanation, the α direction shown in FIG. 1 and the like may be referred to as a vertical direction, the β direction as a horizontal direction, and the γ direction as a vertical direction.

  As illustrated in FIG. 1, the package 10 includes a packaged object 11 and a film packaging material 12 that packages the packaged object 11. The film wrapping material 12 is composed of a heat-shrinkable film substrate 13 and is formed in a direction crossing an opening 15 that exposes a part of the article 11 to be packaged and an opening edge 16 that is an edge of the opening 15. And a plurality of first cutting auxiliary lines 20 and a plurality of through holes arranged in the direction along the opening edge 16, and two or more second cutting auxiliary lines formed at intervals from each other. The first cutting auxiliary line 20 is located in the first region R1 that is the edge of the opening 15 having the opening edge 16 as one end. The second cutting auxiliary line is located in a second region R2 that is connected to one end (opening edge 16) of the first region R1. The second region R2 is a region other than the first region R1 of the film packaging material 12. Further, three (30, 40, 50) second auxiliary cutting lines are formed.

  The package 10 is an integrated package in which three objects to be packaged 11 are packaged with a film wrapping material 12. The three objects to be packaged 11 are arranged in the longitudinal direction of the package 10 and are bound by the film wrapping material 12. The number of the articles to be packaged 11 constituting the package 10 is not particularly limited, and may be four or more, and the articles to be packaged 11 may be stacked in the vertical direction or the horizontal direction. Further, the number of objects to be packaged 11 may be two or one. In the case where the number of objects to be packaged 11 constituting the package 10 is one, the film wrapping material 12 functions as, for example, a film for preventing opening of the object to be packaged 11 or a film for preventing damage / contamination.

  The package 11 is a paper pack such as a brick pack, and has a substantially rectangular parallelepiped shape. Each package 11 has the same shape and the same size as each other, and the accumulation of the packages 11 bound by the film wrapping material 12 also has a substantially rectangular parallelepiped shape. Each article 11 has a shape that is longer in the horizontal direction than in the vertical and vertical directions. Note that the package may have articles to be packaged having different shapes and dimensions. The package is not limited to a substantially rectangular parallelepiped paper pack, but can be a box or can having various shapes (see FIG. 8 to be described later), a bottle, a plastic container, or an article having no container (for example, a book, a stationery) , Batteries, etc.).

  As described above, the film wrapping material 12 is a shrink wrapping material having the heat-shrinkable film base material 13. A conventionally known resin film can be used for the film substrate 13 (shrink substrate). Specific examples of the resin film include a film mainly composed of an olefin resin, an ester resin, a styrene resin, a vinyl chloride resin, an amide resin, or an acrylic resin. The film base 13 is composed of, for example, an olefin resin as a main component. The film base 13 mainly composed of an olefin-based resin is generally low in cost but has high stretchability and excellent breaking strength. An example of a suitable olefin resin is polyethylene or an ethylene-α olefin copolymer.

  The resin film constituting the film substrate 13 may be a single layer film or a laminated film in which the same kind or different kinds of resins are laminated. The thickness of the film base 13 is, for example, 20 μm to 100 μm. The film base 13 is generally a colorless and transparent resin film, but various printed layers may be formed.

  The resin film is preferably stretched in at least one direction. The resin film may be either a uniaxially stretched film or a biaxially stretched film, but a film that is stretched at a high magnification in one direction and stretched at a low magnification in a direction orthogonal to the one direction is preferable. In this case, the main stretching direction of the resin film (the direction stretched at a high magnification) is the main shrinkage direction of the film substrate 13. The heat shrinkage rate in the main shrinkage direction of the film substrate 13 is preferably, for example, 30% to 90%, more preferably 40% to 85% under the condition of being immersed in an oil bath at 120 ° C. for 20 seconds. The thermal shrinkage rate in the direction orthogonal to the main shrinkage direction is, for example, −10% to 50%.

  The film wrapping material 12 is attached to the accumulation following the shape of the accumulation due to the thermal contraction of the film base 13. The film wrapping material 12 covers the surface of the accumulation except for the first surfaces 11a of the two objects to be packaged 11 located at both ends of the accumulation (hereinafter sometimes referred to as the longitudinal end faces of the accumulation). The peripheral edges of the accumulated product in the longitudinal direction are covered with the film wrapping material 12, and the central portion is exposed without being covered with the film wrapping material 12.

  The film wrapping material 12 has two joint portions 14 formed therein. Each joining portion 14 is formed from one opening 15 to the other opening 15 and joins the two films 12a and 12b. That is, in the present embodiment, the film wrapping material 12 is configured by joining two films 12a and 12b. The film wrapping material 12 is preferably molded such that the main shrinkage direction of the film base material 13 is the lateral direction of the package 10. By doing so, it is easy to obtain a good packaging form in which the film packaging material 12 is in close contact with the surface of the accumulation.

  The joining part 14 is formed, for example, by joining the inner surfaces of the respective films 12a and 12b facing the accumulation side. The joining portion 14 may be formed by heat welding, may be formed by solvent welding, or by using an adhesive. Further, the joining portion 14 may be formed at one place of the film packaging material 12. In this case, the film packaging material 12 is composed of a single film. The joining portion 14 may be formed by joining the inner surface and the outer surface of the film packaging material 12.

  The film packaging material 12 has the opening part 15 which exposes a part of the package 11 as described above. The opening 15 is used for opening the package 10, and the film wrapping material 12 is cut from the opening edge 16 that is an edge of the opening 15 at the time of opening. The openings 15 are formed at both ends of the film packaging material 12 in the longitudinal direction. In the package 10, each opening 15 is provided on each of the first surfaces 11 a of the two objects to be packaged 11 positioned at both ends of the accumulation. The package may have a form in which one of the openings 15 is closed.

  The shape of the opening 15 mainly depends on the shape of the accumulation, and in the present embodiment, it has a substantially elliptical shape or a long hole shape that is long in the lateral direction. The opening 15 is formed with a dimension (opening area) of, for example, 10% to 80% with respect to the area of the first surface 11a in consideration of the unsealing property and the binding property of the article 11 to be packaged. The package 10 is manufactured by externally fitting a film wrapping material formed into a cylindrical body to a stack, and then heat shrinking, but the length of the film wrapping extending from both longitudinal ends of the stack By adjusting, the size of the opening 15 can be changed (see FIG. 4 described later). The openings 15 formed at both longitudinal ends of the film wrapping material 12 have, for example, substantially the same shape and substantially the same dimensions.

  The film packaging material 12 includes a plurality of first cutting auxiliary lines 20 formed in a direction intersecting the opening edge 16 in the first region R1, and a plurality of through holes arranged in the direction along the opening edge 16 in the second region R2. It has three second auxiliary cutting lines 30, 40, 50 each configured. The second auxiliary cutting lines 30, 40, 50 are preferably located in the vicinity of the first region R1 in the second region R2. In the present embodiment, the second auxiliary cutting lines 30, 40, 50 are formed in an annular shape around the opening 15 without intersecting each other. Moreover, the 2nd cutting auxiliary line 30,40,50 is formed so that the horizontal direction may become substantially oval shape or long hole shape.

  The first cutting auxiliary line 20 plays a role of facilitating the start of cutting of the film wrapping material 12 when the package 10 is opened, and the portion located at the tip of the first cutting auxiliary line 20 is likely to be the starting point of cutting. . That is, the first cutting auxiliary line 20 creates a trigger for cutting the film wrapping material 12. On the other hand, the second cutting auxiliary lines 30, 40, 50 make it easy to cut the film packaging material 12 in the direction along the opening edge 16. The film packaging material 12 that has started to be cut from the opening edge 16 is cut along, for example, the second cutting auxiliary line 30, then cut along the second cutting auxiliary lines 40 and 50, and gradually away from the opening 15. Will be cut off. In other words, the film wrapping material 12 is difficult to be cut on the extension line of the first cutting auxiliary line 20 by crossing each cutting auxiliary line straight. For this reason, even if the opening edge 16 is accidentally pulled during the distribution process, it is unlikely that the film wrapping material 12 breaks at a stretch.

  The film wrapping material 12 has a large degree of shrinkage around the opening 15 where the second auxiliary cutting lines 30, 40, 50 are formed, particularly in the portion attached to the longitudinal end surface of the accumulation, and is more than the other portions. However, the thickness of the film wrapping material 12 tends to increase. The shrinkage rate of the film wrapping material 12 at the portion attached to the longitudinal end face of the accumulation is, for example, 40% or more, or 50% or more. By forming at least one second auxiliary cutting line in the portion where the film wrapping material 12 contracts by 40% or more, the unsealing property of the package 10 is improved. That is, it is preferable that the second cutting auxiliary line is formed at least in a portion to be attached to the longitudinal end surface of the accumulation. In other words, the shrinkage rate of the film wrapping material 12 is 40% in the vicinity of the opening 15. It is preferable to form in the part used as the above.

  Hereinafter, the first cutting auxiliary line 20 and the second cutting auxiliary line 30, 40, 50 will be described in detail with further reference to FIG. FIG. 2 is an enlarged view showing a part of the periphery of the opening 15.

  As illustrated in FIGS. 1 and 2, the first cutting auxiliary line 20 is formed radially from the opening edge 16. The first cutting auxiliary line 20 is formed uniformly over the entire length of the opening edge 16, for example. The interval between the first cutting auxiliary lines 20 is preferably 0.5 mm to 10 mm. Each interval may be substantially the same, and may be irregular in the range of 0.5 mm to 10 mm. The first cutting auxiliary line 20 may be a perforation line composed of a plurality of through holes arranged in a direction intersecting the opening edge 16, but is preferably a cut cut from the opening edge 16. When the first cutting auxiliary line 20 is a cut, each cut is in a state where the opening edge 16 side is expanded due to the shrinkage of the film packaging material 12. In the present embodiment, the first cutting auxiliary lines 20 are formed at substantially constant intervals in the vicinity of both ends (upper and lower ends) of the opening 15 having a substantially elliptical shape in the short axis direction.

The first cutting auxiliary line 20 is formed from the opening edge 16 toward the second cutting auxiliary line 30. In order to prevent unintended breakage of the film wrapping material 12 in the distribution process, each first cutting auxiliary line 20 is formed with a length that does not intersect the second cutting auxiliary line 30. Each first cutting auxiliary line 20 is formed in the first region R1, and the second cutting auxiliary lines 30, 40, 50 are formed in the second region R2. The length L20 of each first cutting auxiliary line ₂₀ is preferably 0.5 mm to 5 mm. The length L ₂₀ of the first auxiliary cutting line 20 may be substantially the same, may be different from each other in the range of 0.5 mm to 5 mm.

The second cutting auxiliary lines 30, 40, 50 are formed in the direction along the opening edge 16 in the vicinity of the first region R1. The second cutting auxiliary line 30 formed closest to the opening 15 is formed at a position away from the tip of the first cutting auxiliary line 20 so as not to intersect the first cutting auxiliary line 20. The distance D1 between the opening edge 16 and the second cutting auxiliary line 30 is, for example, 2 to 5 times the length L ₂₀ of the first cutting auxiliary line 20, and specifically about 1 mm to 25 mm. On the outer side of the second cutting auxiliary line 30, that is, on the side opposite to the opening 15, the second cutting auxiliary lines 40 and 50 are formed in order at a predetermined interval. The second cutting auxiliary lines 30, 40, 50 are formed, for example, in a substantially concentric shape and are substantially parallel to each other.

  The second cutting auxiliary line 30 is a perforation line composed of a plurality of through holes 31 arranged in the direction along the opening edge 16. Similarly, the second auxiliary cutting lines 40 and 50 are composed of a plurality of through holes 41 and 51. The second cutting assisting line 30 is formed in an annular shape around the entire periphery of the opening 15 and surrounds the opening 15. The second cutting auxiliary line 40 surrounds the outside of the second cutting auxiliary line 30, and the second cutting auxiliary line 50 surrounds the outside of the second cutting auxiliary line 40.

  The second auxiliary cutting lines 30, 40, 50 are preferably formed along the main contraction direction of the film base 13. In the present embodiment, the second cutting auxiliary lines 30, 40, 50 are formed in the direction along the opening edge 16. In this case, the direction in which the second cutting auxiliary lines 30, 40, 50 extend coincides with the main stretching direction of the film base 13 (the orientation direction of the molecular chains constituting the film base 13), and the second cutting auxiliary lines 30, Cutting of the film wrapping material 12 along the lines 40 and 50 is further facilitated. Moreover, since the expansion of the through-hole due to the heat shrinkage of the film wrapping material 12 is suppressed, the appearance of the film wrapping material 12 is not impaired, and the durability of the film wrapping material 12 in the distribution process is easily ensured.

The through hole 31 constituting the second cutting auxiliary line 30 may have a substantially perfect circle shape, but is preferably a long hole that is long in the direction along the opening edge 16. The length L ₃₁ of the through hole 31 in the direction along the opening edge 16 is, for example, 3 mm to 7 mm. The length L ₃₁ of the through holes 31 may be substantially identical to each other, may be different from each other in the range of 3 mm to 7 mm. Spacing D ₃₁ between the through-hole 31 (except for the spacing D ₃₂ will be described later) is shorter than the length L ₃₁ is preferably, for example, 1 mm to 5 mm. Each interval may be substantially the same as each other, or may be irregular within a range of 1 mm to 5 mm.

The second cutting auxiliary line 30 includes a plurality of through-hole groups 32 including two or more through-holes 31. Between the through hole group 32, a wide gap 33 than the gap D ₃₁ of the through-holes 31 that constitute the through hole group 32 is provided. That is, the second cutting auxiliary line 30 is a perforation line in which a plurality of through-hole groups 32 are repeated at a predetermined interval D ₃₂ in the direction along the opening edge 16. The number of through holes 31 constituting the through hole group 32 is not particularly limited. For example, when the length L ₃₁ of one through hole 31 is 3 mm to 7 mm, 4 to 8 is preferable. Each of the through hole group 32 between the spacing D ₃₂ may be substantially identical to each other, may be different from each other.

Distance D ₃₁ of the through-holes 31 that constitute the through hole group 32 is smaller than the second auxiliary cutting line spacing between adjacent (distance D2 of the second auxiliary cutting line 30 and the second auxiliary cutting line 40) preferable. The through hole group 32 between distance D ₃₂ of is preferably larger than the distance D2. By setting it as such a relationship, the cutting | disconnection location of the film packaging material 12 at the time of opening becomes easy to move smoothly on the 2nd cutting auxiliary line 40 from the 2nd cutting auxiliary line 30 (refer FIG. 5 mentioned later). For example, distance D ₃₂ is 5 mm to 10 mm, distance D2 is 2 mm to 8 mm.

The same configuration as that of the second cutting auxiliary line 30 described above can also be applied to the second cutting auxiliary lines 40 and 50. That is, the through holes 41 constituting the second cutting auxiliary line 40 are long holes that are long in the direction along the opening edge 16, and the interval D ₄₁ between the through holes 41 is shorter than the length L ₄₁ of the through holes 41. It is preferable (the same applies to the second cutting auxiliary line 50). The degree of shrinkage of the film wrapping material 12 tends to increase as it approaches the opening edge 16. For this reason, in the long film 12P to be described later, when the length of the through holes of the second auxiliary cutting lines and the interval between the through holes are the same, in the film packaging material 12, the length L ₅₁ > long L ₄₁ > length L ₃₁ , interval D ₅₁ > interval D ₄₁ > interval D ₃₁

The second auxiliary cutting lines 40 and 50 include a plurality of through-hole groups 42 and 52 each including two or more through-holes 41 and 51. Between each through-hole group 42 and 52, the gap | intervals 43 and 53 wider than the space | interval of each through-hole which comprises each through-hole group 42 and 52 are each provided. As for the second cutting auxiliary line 40, as in the case of the second cutting auxiliary line 30, the interval _D41 is an interval between adjacent second cutting auxiliary lines (the interval D2 and the second cutting auxiliary line 40 and the second cutting auxiliary line). It is preferably less than 50 intervals D3). The distance D ₄₂ of the through hole group 42 together is preferably larger than the distance D2 and the distance D3. In the present embodiment, furthermore, greater than less than the distance D ₅₁ the distance D3, the through-hole group 52 between distance D ₅₂ of the spacing D3.

  In each of the adjacent second cutting auxiliary lines, it is preferable that the gaps between the through hole groups are provided so as to be shifted in the direction along the opening edge 16. That is, it is preferable that the gaps 33, 43, 53 of the second cutting auxiliary lines 30, 40, 50 are not completely formed so as to overlap substantially completely in the direction intersecting the opening edge 16. By shifting the gaps 33, 43, 53 in the direction along the opening edge 16, the cut portion can be smoothly moved and the unsealing property is improved. Note that the gap 33 of the second cutting auxiliary line 30 and the gap 53 of the second cutting auxiliary line 50 may substantially completely overlap in the direction intersecting the opening edge 16.

  In the present embodiment, the gap 33 of the second cutting auxiliary line 30 and the gap 43 of the second cutting auxiliary line 40 are provided so as to be shifted in the direction along the opening edge 16, and only a part of the end of each gap is the opening edge. It overlaps with the direction which crosses 16. The through holes 31 and 41 are formed in a staggered manner. The gap 43 of the second cutting auxiliary line 40 and the gap 53 of the second cutting auxiliary line 50 are also shifted in the direction along the opening edge 16, and the through holes 41 and 51 are formed in a staggered manner. The degree of overlap of the gap 43 and the gap 53 with respect to the direction intersecting the opening edge 16 is larger than that of the gap 33 and the gap 43. Further, the gap 33 and the gap 53 are also provided so as to be shifted in the direction along the opening edge 16, but the degree of overlap of each gap with respect to the direction intersecting the opening edge 16 is further increased than in the case of the gap 43 and the gap 53. large. The second auxiliary cutting lines 30, 40, 50 may be formed such that the three gaps 33, 43, 53 do not overlap at all in the direction intersecting the opening edge 16.

  A part of the second cutting auxiliary line may be provided on the second surfaces 11b and 11c adjacent to the first surface 11a. In the present embodiment, the second cutting auxiliary line 50 is provided on each of the first surface 11a and the second surfaces 11b and 11c. Most of the second cutting assisting line 50 is provided on the first surface 11a, but a part protrudes from the first surface 11a and covers the second surfaces 11b and 11c. Openability is further improved by forming the second cutting auxiliary line so as to cover not only the first surface 11a where the opening 15 is provided but also the second surfaces 11b and 11c. A plurality of second cutting auxiliary lines may be provided so as to cover the second surfaces 11b and 11c.

  Here, with reference to FIG. 3, the long film 12P used as the film packaging material 12 is explained in full detail. FIG. 3 is a view showing a long film 12 </ b> P that becomes the film wrapping material 12. The long film 12P is a belt-like long body, for example, after being divided into sizes corresponding to individual packaging bodies 10, and then formed into a cylindrical body 17K (see FIG. 4 described later). And it becomes the film packaging material 12 with which the cylindrical body 17K was mounted | worn following the shape of the accumulation | aggregation | set by carrying out heat contraction in the state externally fitted to the accumulation | aggregation | structure of the to-be packaged object 11. FIG. The film wrapping material 12 is obtained using two long films 12P.

  Hereinafter, “P” is given to the reference numerals of the constituent elements of the long film 12P to distinguish them from the corresponding constituent elements of the film packaging material 12. The first cutting auxiliary line 20P becomes the first cutting auxiliary line 20 of the film wrapping material 12, and the second cutting auxiliary lines 30P, 40P, 50P are respectively the second cutting auxiliary lines 30, 40, 50 of the film wrapping material 12. Become.

  As illustrated in FIG. 3, the long film 12 </ b> P is provided with the first cutting auxiliary line 20 </ b> P and the second cutting auxiliary lines 30 </ b> P, 40 </ b> P, 50 </ b> P on the long film base 13 </ b> P that becomes the film base 13. Is. Each first cutting auxiliary line 20P is formed at the edge in the width direction of the long film 12P that becomes the first region R1. The second cutting auxiliary lines 30P, 40P, 50P are formed side by side in the longitudinal direction of the long film substrate 13P in a region that is connected to the edge in the width direction of the long film 12P that becomes the second region R2. Is done. The first cutting auxiliary line 20P and the second cutting auxiliary lines 30P, 40P, 50P are respectively formed on both sides of the long film 12P in the width direction (TD direction).

  The first cutting auxiliary line 20P is preferably formed substantially perpendicular to the edge in the width direction of the long film 12P. The first auxiliary cutting line 20P has a length of 1 mm to 5 mm, for example, and is formed in a slit shape. In the present embodiment, the longitudinal direction of the long film 12P is the main contraction direction, which is the circumferential direction of the cylindrical body 17K. That is, since the first cutting auxiliary line 20P is formed substantially perpendicular to the main shrinkage direction of the long film 12P, the length of the first cutting auxiliary line hardly changes before and after the heat shrinkage (first cutting). The length of the auxiliary line 20P≈the length of the first cutting auxiliary line 20), or the length of the auxiliary line 20P is slightly shortened by heat shrinkage.

  The first auxiliary cutting lines 20P may be formed at irregular intervals, but are formed at substantially equal intervals in this embodiment. The interval between the first cutting auxiliary lines 20P is, for example, 1 mm to 15 mm. The interval between the first cutting auxiliary lines changes before and after the thermal contraction and is generally narrowed by the thermal contraction (the interval between the first cutting auxiliary lines 20P> the interval between the first cutting auxiliary lines 20). Further, as described above, each first cutting auxiliary line 20 is in a state where the opening edge 16 side is expanded.

The second auxiliary cutting lines 30P, 40P, 50P are preferably formed substantially parallel to the width direction edge of the long film 12P and extend substantially parallel to each other. The through hole 31P constituting the second cutting auxiliary line 30P (the same applies to the through holes 41P and 51P of the second cutting auxiliary line 40P and 50P) is a long hole that is long in the longitudinal direction of the long film 12P and passes through. The length L _31P of the hole 31P is, for example, 4 mm to 10 mm. The width of the through hole 31P is, for example, 2 mm or less. The through hole 31P is not limited to a long hole, and may be formed in a slit shape. Through holes 31P between intervals D _31P (excluding spacing D _32P of the through hole group 32P each other) is shorter than the length L _31P is preferably, for example, 1Mm～9mm.

In the present embodiment, second auxiliary cutting lines 30P, 40P, and 50P are formed along the main contraction direction of the long film base 13P. The lengths L _31P , L _41P and L _51P of the through holes are substantially the same, for example, but may be different between the auxiliary lines. Moreover, the length of each through-hole which comprises each auxiliary line may not be constant. The distances D _31P , D _41P , D _51P between the through holes are substantially the same, for example, but may be different between the auxiliary lines or may be different within each auxiliary line.

Each of the second cutting auxiliary lines 30P, 40P, and 50P includes a plurality of through-hole groups 32P, 42P, and 52P including a plurality of through-holes, and each through-hole group includes a through-hole group. Gap 33P, 43P, 53P wider than the interval between the holes is provided. Also in the elongate film 12P, the relationship between the space | interval of through-hole groups and the space | interval of adjacent 2nd cutting auxiliary lines is the same as the case of the film packaging material 12. FIG. That is, the spacing D _31P through holes 31P that constitute the respective through hole groups 32P is less than distance D2P the second auxiliary cutting line 30P and the second auxiliary cutting line 40P, the interval D _32P of the through hole group 32P each other Is larger than the interval D2P. Further, the distance D _41P ≦ the distances D2P and D3P, the distance D _42P > the distances D2P and D3P, the distance D _51P ≦ the distance D3P, and the distance D _52P > the distance D3P.

In the present embodiment, as described above, the interval D1P is larger than the intervals D2P and D3P, and the intervals D2P and D3P are substantially the same. However, the intervals D2P and D3P may be different from each other, for example. Further, the intervals D _32P , D _42P , D _52P of the gaps are substantially the same as each other, for example, but may be different between the auxiliary lines or may be different within each auxiliary line.

  In the adjacent second cutting auxiliary lines, the gaps between the through hole groups are preferably provided so as to be shifted in the longitudinal direction of the long film 12P. That is, it is preferable that the gap 33P and the gap 43P, and the gap 43P and the gap 53P are not formed so as to substantially completely overlap in the width direction of the long film 12P. Thereby, in the package 10, the gaps 33, 43, 53 are easily formed in a direction along the opening edge 16, and the unsealing property is improved. Part of the gaps 33P, 43P, 53P may overlap in the width direction of the long film 12P, and the gap 33P and the gap 53P may overlap substantially completely in the width direction.

  Here, an example of a method for manufacturing the package 10 using the long film 12P will be described in detail with reference to FIG. FIG. 4 is a diagram for explaining an example of a method for manufacturing the package 10 using the long film 12P. FIG. 4 shows a state in which a cylindrical body 17K is put on an accumulation in which three objects to be packaged 11 are arranged in the vertical direction.

  In the manufacturing process of the package 10 illustrated in FIG. 4, two long films 12P are used. Then, the longitudinal ends of the respective long films 12P are heat-welded (for example, fused) to form the joints 14, and then one second surface 11c of each packaged article 11 contacts the joints 14. The accumulation is inserted between the two long films 12P so as to be in contact with each other. Next, the two long films 12P on the other side of the second surface 11c opposite to the one second surface 11c are melted to form the joint portion 14 so that the cylinder is externally fitted to the accumulation. A body 17K is obtained.

  At this time, both axial ends of the cylindrical body 17K extend from both longitudinal ends of the accumulation. In this state, the cylindrical body 17K is heated and thermally contracted, whereby the packaging body 10 on which the film packaging material 12 is mounted following the shape of the accumulation is obtained. The cylindrical body 17K is in close contact with the second surfaces 11b and 11c of the articles to be packaged 11, and the axial end of the cylindrical body 17K is bent toward the longitudinal end surface (first surface 11a) of the accumulation. In close contact with the peripheral edge of the longitudinal end face. The central portion of the vertical end face of the accumulation is exposed by the opening 15, and each second cutting auxiliary line is provided in a portion near the opening 15 and attached to the vertical end face. For example, when the length of the cylindrical body 17K extending from both ends in the vertical direction of the accumulation is increased, the size of the opening 15 is reduced, and the portion of the vertical end surface of the accumulation that is covered by the film wrapping material 12 is reduced. The area increases.

  FIG. 5 is a diagram illustrating a state in which the package 10 is opened. As illustrated in FIG. 5, the package 10 is opened by cutting the film wrapping material 12 from the opening edge 16. As a specific example of the opening method, there is a method in which a finger is put on the upper end of the opening edge 16 to pull the film packaging material 12 upward, and the film packaging material 12 is cut from the upper end of the opening edge 16.

  Since a plurality of first cutting auxiliary lines 20 are formed from the opening edge 16 in the first region R, which is the edge of the opening 15, the film wrapping material 12 is placed on the upper edge of the opening edge 16 with a finger. When the packaging material 12 is pulled upward, the portion located at the tip of the first cutting auxiliary line 20 becomes a cutting start point, and the cutting of the film packaging material 12 is started. The film wrapping material 12 is further provided with three second cutting auxiliary lines 30, 40, 50 in order from the opening 15 side in the second region R 2 that is connected to the first region R 1. The material 12 is cut along the second auxiliary cutting lines and gradually cut away from the opening 15.

When the film wrapping material 12 started to be cut from the tip of the first cutting auxiliary line 20 is continuously pulled upward, the film wrapping material 12 is then cut along the second cutting auxiliary line 30. Then, for example, when the film wrapping material 12 is cut to the position of the gap 33 of the second cutting auxiliary line 30, it is cut in a direction away from the opening 15 away from the second cutting auxiliary line 30. Cut along the second cutting auxiliary line 40 outside the two cutting auxiliary lines 30. Since interval D ₃₂ of the gap 33 is greater than distance D2, it is likely to occur the shift of such a disconnection point in the gap 33.

  When the film wrapping material 12 is further pulled upward, for example, when the film wrapping material 12 is cut to the position of the gap 43 of the second cutting auxiliary line 40, the film wrapping material 12 is cut in a direction away from the opening 15, and subsequently The second cutting auxiliary line 40 is cut along the second cutting auxiliary line 50 located outside the second cutting auxiliary line 40. In this way, the film wrapping material 12 is cut in a direction away from the opening 15 and peeled off from the accumulation. And each to-be-packaged object 11 can be taken out from the package 10.

  As described above, the film wrapping material 12 is cut in a direction away from the opening 15 while moving on the second auxiliary cutting lines 30, 40, 50. That is, the film wrapping material 12 is not cut straight on the extension line of the first cutting auxiliary line 20, and the second cutting auxiliary lines 30, 40, and 50 function as stoppers in the distribution process, and the film wrapping material 12 breaks at a stretch. It is hard to happen. Therefore, when the package 10 is intentionally opened, the film wrapping material 12 can be easily cut and has a good opening property. Excellent. According to the package 10, even when the film substrate 13 is mainly composed of a highly stretchable olefin resin, good openability can be obtained.

  The above-described embodiment can be appropriately changed in design as long as the object of the present invention is not impaired. For example, in the above-described embodiment, it has been described that three second cutting auxiliary lines are formed, but four or more second cutting auxiliary lines may be formed. Further, the second cutting auxiliary line furthest away from the opening may not be located on the vertical end face of the accumulation, but may be located on the second face adjacent to the vertical end face.

  6 to 8 show another example of the embodiment. 6 to 8, the same components as those in the above-described embodiment are denoted by the same reference numerals, and redundant description is omitted, and differences from the above-described embodiment will be mainly described.

  The packaging body 60 illustrated in FIG. 6 is different from the packaging body 10 in that the first cutting auxiliary line 66 and the second cutting auxiliary lines 61 and 62 are formed only in a part around the opening 15. Moreover, it is different from the package 10 in that two second auxiliary cutting lines 61 and 62 are formed. For example, the same configuration as the first cutting auxiliary line 20 can be applied to the first cutting auxiliary line 66, and the same configuration as the second cutting auxiliary lines 30 and 40 can be applied to the second cutting auxiliary lines 61 and 62, respectively. . In the example shown in FIG. 6, a film wrapping material 65 is configured by joining a film 63 having a first cutting auxiliary line 66 and second cutting auxiliary lines 61 and 62 and a film 64 not having these.

A long film 70P illustrated in FIG. 7 is common to the package 10 (long film 12P) in that it has three second cutting auxiliary lines 71P, 72P, 73P. On the other hand, the interval D _74P through holes 74P that constitute the second auxiliary cutting line 71P is greater than the distance D5P the second auxiliary cutting line 71P and the second auxiliary cutting line 72, the widthwise end of the elongated film 12P The length L _74P of the through hole 74P in the direction along the edge is different from the long film 12P in that the length L _74P is longer than the distance D _74P . Second auxiliary cutting line 72P, the through hole 75P of 73P, the well 76P, has the same structure as that of the second auxiliary cutting line 71P, the interval D _75P> interval D5P, D6P, and the length L _75P> distance D a _75P, the interval D _76P> interval D6P, and the length L _76P> interval D _76P. For example, the length L _74P of each of the through holes, L _75P, L _76P is substantially identical to each other and spacing D _74P of each of the through holes to each other, D _75P, D _76P are substantially identical to one another, adjacent the second auxiliary cutting Each through hole of the line is formed in a staggered manner.

  In the package manufactured using the film wrapping material 70P, the interval between the through holes constituting each second cutting auxiliary line is larger than the interval between the adjacent second cutting auxiliary lines, and the opening edges of the respective through holes The length in the direction along the line becomes longer than the interval between the through holes.

  The package 80 illustrated in FIG. 8 is different from the package 10 in that four packages 81 in the vertical direction and three in the horizontal direction, that is, a total of 12 packages 81 are bundled by the film wrapping material 82. Further, in the packaging body 80, two second cutting auxiliary lines 84 and 85 are formed as in the packaging body 60. For example, the same configuration as the first cutting auxiliary line 20 can be applied to the first cutting auxiliary line 83, and the same configuration as the second cutting auxiliary lines 30 and 40 can be applied to the second cutting auxiliary lines 84 and 85, respectively. . The package 81 is, for example, a substantially cylindrical can having the same shape and the same dimensions.

  DESCRIPTION OF SYMBOLS 10 Package, 11 Packaged object, 11a 1st surface, 11b, 11c 2nd surface, 12 Film packaging material, 12a, 12b Film, 12P long film, 13 Film base material, 13P Long film base material, 14 joint part, 15 opening part, 16 opening edge, 17K cylindrical body, 20 first cutting auxiliary line, 30, 40, 50 second cutting auxiliary line, 31, 41, 51 through hole, 32, 42, 52 through hole Group, 33, 43, 53 gap, R1 first region, R2 second region

Claims (9)

Packaged goods,
A film wrapping material having a heat-shrinkable film substrate and wrapping the article to be wrapped;
With
The film wrapping material is
An opening that exposes a portion of the package;
A plurality of first cutting auxiliary lines formed in a direction intersecting the opening edge of the opening;
A plurality of through holes arranged in a direction along the opening edge, and two or more second cutting auxiliary lines formed at intervals from each other;
Have
The first cutting auxiliary line is located in a first region that is an edge of the opening with the opening edge as one end,
Each said 2nd cutting auxiliary | assistant line is a package body located in the 2nd area | region connected with the other end of the said 1st area | region on the opposite side to the end of the said 1st area | region.   The packaging body according to claim 1, wherein the film packaging material is formed such that a main shrinkage direction of the film base material is a direction along the opening edge. Each of the second auxiliary cutting lines includes a plurality of through-hole groups including the plurality of through-holes,
An interval between the through holes constituting each through hole group is smaller than an interval between the adjacent second cutting auxiliary lines, and an interval between the through hole groups is an interval between adjacent second cutting auxiliary lines. The package according to claim 1 or 2, which is larger.   The interval between the through holes constituting each second cutting auxiliary line is larger than the interval between the adjacent second cutting auxiliary lines, and the length of each through hole in the direction along the opening edge is The package of Claim 1 or 2 longer than the space | interval of through-holes.   The package according to any one of claims 1 to 4, wherein the second auxiliary cutting line is formed in a portion where the shrinkage rate of the film wrapping material is 40% or more.   The package according to any one of claims 1 to 5, wherein the first cutting auxiliary line is a cut.   The packaging body according to any one of claims 1 to 6, wherein the film base is composed of an olefin resin as a main component. The packaged object has a substantially rectangular parallelepiped shape,
The opening of the film wrapping material exposes the first surface of the article to be packaged, and the second cutting auxiliary line is provided on the first surface,
The package according to any one of claims 1 to 7, wherein a part of the second cutting auxiliary line is provided on a second surface adjacent to the first surface. An unshrinkable long film that becomes the film packaging material of the packaging body according to any one of claims 1 to 8,
Equipped with a long film substrate to be the film substrate,
Each said 1st cutting auxiliary line is formed in the width direction of the said elongate film base material in the width direction edge part of the said elongate film base material used as the said 1st area | region,
Each of the through-holes constituting each of the second cutting auxiliary lines is in a region continuously provided with a width direction edge portion of the long film base material serving as the second region. A long film formed side by side in the longitudinal direction.

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