JP2004331148A - Handled package of accumulated article - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a handled package of accumulated articles wherein a heat-shrinkable film for wrapping a group of the articles is hardly broken during carrying it, and which is excellent in feeling of touch and easy-to-carry, and has a handle being kept out of the way before it is delivered into the hands of a consumer. <P>SOLUTION: This handled package of accumulated articles is composed of the packaging body wrapping the group of the articles consisting of a plurality of cylindrical articles and having an arrangement with an even number of rows with the heat-shrinkable film and tightly packaging the group of the articles in a lump by its heat-shrinking force, and the handle for carrying. The whole periphery of the group of the articles in the row direction in the package is wound by the handle composed of a flexible film. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a handle-equipped article stack in which a plurality of articles are collectively packaged with a heat-shrinkable film, and a handle that is easy to carry is attached.
[0002]
[Prior art]
2. Description of the Related Art There is known an integrated packaging system in which a plurality of articles such as cans and bottles are collectively wrapped with a heat-shrinkable film, and the wrapped film is shrunk by heating from the surroundings. According to this method, a plurality of articles, even cylindrical articles or articles having irregularities, can be tightly packed, and the appearance is good.
[0003]
In order to make it easy to carry such an article-stacked package using the heat-shrinkable film, it has been proposed to attach a handle for carrying to the article-stacked package. For example, Patent Literature 1 discloses an article stacking and packaging body with a hanging hand band in which both ends of a hanging band made of a non-heat-shrinkable sheet are joined to both sides in the short direction of an article stacking and packaging body using a heat shrinkable film with an adhesive. The body is disclosed. Further, Patent Literature 2 discloses a shrinkable package with a handle in which a handle for handle made of a band-shaped sheet is attached to a surface on the upper surface side of an article accumulation package using a heat-shrinkable film.
[0004]
However, in the conventional article-collecting package with a handle, the handle for carrying is fixed to the heat-shrinkable film. Therefore, when the article-collecting package is lifted by grasping the handle, the fixing portion of the heat-shrinkable film is fixed to the handle. Therefore, there is a problem that the heat-shrinkable film is easily broken from that portion. In addition, since a thick sheet is used as the handle, it cannot be said that the feel and the ease of holding are good, and the handle becomes an obstacle before being passed to the consumer's hand, for example, when stacking. There was also a problem that it was easy.
[0005]
[Patent Document 1]
Japanese Utility Model Publication No. 5-36851 [Patent Document 2]
JP-A-2-109868
[Problems to be solved by the invention]
Therefore, an object of the present invention is to provide a handle that does not disturb the heat-shrinkable film enclosing the group of articles during carrying, is excellent in tactile sensation and easiness of holding, and does not disturb even before reaching the consumer's hand. An object of the present invention is to provide an article-stacked package with a handle.
[0007]
[Means for Solving the Problems]
The present inventors have conducted intensive studies to achieve the above-mentioned object, and as a result, a group of articles formed of a plurality of cylindrical articles and arranged in an even number of rows is specified as a package wrapped with a heat-shrinkable film. If the handle made of a film made of the above material is attached by a specific method, it is excellent in portability and tactile sensation, and the wrapping film (heat shrinkable film) is hard to break when carrying, and the handle can be used even when not carrying They found that they did not interfere, and completed the present invention.
[0008]
That is, in the present invention, a group of articles consisting of a plurality of cylindrical articles and having an even number of rows is wrapped with a heat-shrinkable film, and the group of articles is tightly packaged by the heat-shrinking force. Package, and an article-collecting package with a handle including a handle for carrying, wherein the entire circumference of the package in the row direction of the group of articles is wound by a handle made of a flexible film. An article-collecting package with a handle is provided.
[0009]
In the article-packaged package with a handle, wrinkle-like projections generated at the time of heat shrinkage on the heat-welded portion of the bag-like heat-shrinkable film formed by heat welding, or both ends formed at the time of heat shrinkage of the sleeve-like heat-shrinkable film. The opening may be covered by a handle wound around the entire circumference of the package. Further, the entire periphery of the package including the surface where the seal portion of the bag-shaped or sleeve-shaped heat-shrinkable film is present may be wound around the handle, and the seal portion may be covered with the handle.
[0010]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, the present invention will be described in detail with reference to the drawings as necessary. The article-stacked packaging body with a handle of the present invention covers an article group consisting of a plurality of cylindrical articles and having an array having an even number of rows with a heat-shrinkable film, and the heat-shrinkable film causes the article group to be wrapped. And a handle for carrying.
[0011]
The article to be wrapped is not particularly limited as long as it has a cylindrical shape, a plurality of such cylindrical articles can be packaged together, and it can be carried by hand (particularly with one hand). For example, a can, a glass bottle, a plastic bottle (such as a PET bottle) containing contents, and the like are exemplified. The contents are not particularly limited, and include, for example, beer, sake, drinks such as wine, juices, carbonated drinks, water, tea, etc .; foods such as meat, fish meat, fruits; pet foods, pharmaceuticals, Examples include industrial chemicals, cosmetics, and detergents. Note that the term “cylindrical” does not necessarily mean that a cross section is a true circle, and is used to include a columnar body whose cross section is close to a circle, such as an ellipse or a polygon with rounded corners.
[0012]
The arrangement of the cylindrical articles may be any arrangement in which the number of rows is an even number (for example, 2, 4, etc.). Cylindrical articles are often arranged in an upright state, but they may also be arranged in a horizontal state. The cylindrical article may be stacked in one layer or may be encapsulated in a state of being stacked in two or more layers. The number of cylindrical articles is not particularly limited, and can be appropriately selected depending on the weight of the articles and the like. Typical arrangements of articles include, for example, 2 rows × 2 to 6 pieces (4 to 12 pieces in total), 4 rows × 4 to 6 pieces (16 to 24 pieces in total), and the like. In the present invention, since the number of rows of the cylindrical articles is an even number, if the entire circumference of the package in the row direction of the article group is wrapped with a handle made of a soft film, the handle is grasped with the hand and the articles are accumulated. When the package is lifted, the handle enters the gap (dent) between the cylindrical articles located at the center in the direction orthogonal to the column direction at the corner from the top surface of the package to the side surface in the column direction. And the center of gravity is easy to take. Therefore, a great advantage is obtained in that the sense of stability when held is extremely good and the device is easy to carry.
[0013]
The heat-shrinkable film for enclosing a plurality of articles is not particularly limited as long as it is a heat-shrinkable film, and may be any of a polyvinyl chloride film, a polyolefin-based film such as a polyethylene film and a polypropylene film, and the like. However, a biodegradable film which does not exert a great load on the environment even if disposed of in the natural world after use, particularly a film made of a polylactic acid-based polymer, is preferred.
[0014]
The polylactic acid-based polymer means a polymer containing lactic acid (D-lactic acid, L-lactic acid, DL-lactic acid, or a mixture thereof) as a monomer component, and lactic acid and other hydroxycarboxylic acids or lactones. And copolymers thereof. Other hydroxycarboxylic acids include, for example, glycolic acid, 2-methyllactic acid, 2-hydroxybutyric acid, 3-hydroxybutyric acid, 4-hydroxybutyric acid, 2-hydroxy-3-methylbutyric acid, 2-hydroxy-3,3-dimethyl Butyric acid, 2-hydroxycaproic acid and the like. Examples of the lactones include γ-butyrolactone, δ-valerolactone, ε-caprolactone, and the like.
[0015]
The proportion of lactic acid in all the monomers constituting the polylactic acid-based polymer is generally at least 50 mol%, preferably at least 80 mol%, more preferably at least 90 mol%, particularly at least 95 mol% (for example, 100 mol% or more). Mol%) is preferred. The polylactic acid-based polymer may be used alone or in combination of two or more. For example, two or more kinds of polylactic acid-based polymers having different ratios of L-lactic acid and D-lactic acid can be used.
[0016]
The method for obtaining the polylactic acid-based polymer is not particularly limited, and a known method such as a condensation polymerization method or a ring-opening polymerization method can be employed. For example, in the polycondensation method, lactic acid or a polylactic acid-based polymer having an arbitrary composition can be obtained by directly dehydrating and condensing lactic acid with another monomer component. In the ring-opening polymerization method, lactide, which is a cyclic dimer of lactic acid, is polymerized in the presence of an appropriate catalyst to obtain a polylactic acid-based polymer having an arbitrary composition.
[0017]
The weight average molecular weight of the polylactic acid-based polymer is not particularly limited, but is usually about 50,000 to 1,000,000, preferably about 80,000 to 400,000. If the molecular weight is too small, the mechanical properties and heat resistance are poor, and if the molecular weight is too large, the moldability decreases.
[0018]
The heat-shrinkable film may contain a polylactic acid-based polymer as a main resin component, and may contain a small amount of a resin component other than the polylactic acid-based polymer. Examples of the resin other than the polylactic acid-based polymer include a biodegradable resin such as an aliphatic polyester, an aliphatic polyester amide, an aliphatic polyester ether, and an aliphatic polyester carbonate. Resins other than the polylactic acid-based polymer can be used alone or in combination of two or more. Of these, aliphatic polyesters are particularly preferred. By adding an aliphatic polyester to the polylactic acid-based polymer, the flexibility of the film can be improved.
[0019]
The aliphatic polyester is a condensation polymerization of an aliphatic or alicyclic diol component and an aliphatic or alicyclic dicarboxylic acid component, a condensation polymerization of an aliphatic or alicyclic hydroxycarboxylic acid, a ring-opening polymerization of lactones, or It is manufactured by a combination of these. Each monomer component may be used in combination of two or more. As the aliphatic or alicyclic diol component, for example, ethylene glycol, 1,3-propanediol, propylene glycol, 2,2-dimethyl-1,3-propanediol, 1,4-butanediol, 1,6- Aliphatic diols such as hexanediol; polyalkylene glycols such as diethylene glycol; alicyclic diols such as 1,2-cyclohexanedimethanol, 1,3-cyclohexanedimethanol, and 1,4-cyclohexanedimethanol. Examples of the aliphatic or alicyclic dicarboxylic acid component include, for example, aliphatic dicarboxylic acids such as succinic acid, glutaric acid, adipic acid, pimelic acid, suberic acid, azelaic acid, sebacic acid, and dodecane diacid; Examples include alicyclic dicarboxylic acids such as hydronaphthalenedicarboxylic acid, 1,4-cyclohexanedicarboxylic acid, and 1,3-cyclohexanedicarboxylic acid. As the aliphatic or alicyclic hydroxycarboxylic acid and lactone, those described above can be used.
[0020]
In the above aliphatic polyester, a part of the aliphatic or alicyclic dicarboxylic acid component (for example, about 0.1 to 50 mol%) may be replaced with an aromatic dicarboxylic acid component. The film obtained by adding the polyester (aromatic aliphatic polyester) thus obtained to the polylactic acid-based polymer has a particularly excellent impact resistance, and is characterized in that it does not easily break even after being thermally shrunk. Examples of the aromatic ring dicarboxylic acid include isophthalic acid, terephthalic acid, 2,6-naphthalenedicarboxylic acid, and 4,4'-biphenyldicarboxylic acid. These can be used alone or in combination of two or more.
[0021]
Representative examples of the aliphatic polyester include polybutylene succinate (PBS), polybutylene succinate adipate (PBSA), and polycaprolactone (PCL).
[0022]
The proportion of the polylactic acid-based polymer in the entire resin constituting the heat-shrinkable film is usually 50% by weight or more (50 to 100% by weight, particularly 50 to 95% by weight), preferably 60% by weight or more (60 to 100% by weight). %, Especially 60 to 90% by weight), more preferably 65% by weight or more (65 to 100% by weight, especially 65 to 85% by weight). When the proportion of the polylactic acid-based polymer is small, the transparency is lowered, and when a large amount of an aliphatic polyester or the like is mixed, the composition becomes too soft and the shrink finish is likely to be lowered.
[0023]
The heat-shrinkable film may contain various additives such as a lubricant, a filler, a heat stabilizer, an antioxidant, an ultraviolet absorber, an antistatic agent, a flame retardant, and a colorant, if necessary. . The heat shrinkable film may be composed of a plurality of layers. The thickness of the heat shrinkable film is usually about 8 to 100 μm, preferably about 10 to 60 μm, and more preferably about 15 to 40 μm. When the thickness of the film is less than 8 μm, the mechanical strength is reduced and the film is easily broken. When the thickness of the film exceeds 100 μm, the cost increases and the film is not practical. As the heat shrinkable film, a film having high transparency is preferable so that the product can be clearly recognized.
[0024]
The heat-shrinkable film can be produced by a conventional method for producing a film, for example, an extrusion method. For example, a resin composition obtained by adding other resins and additives as necessary to the polylactic acid-based resin is melt-extruded using an extruder equipped with a T die or an annular die, and cooled by a cooling roll. It can be manufactured by stretching.
[0025]
Stretching can be performed by any of a tenter method and a tube method. The stretching may be uniaxial stretching (horizontal uniaxial stretching or longitudinal uniaxial stretching) or biaxial stretching. In the case of uniaxial stretching, the stretching treatment is, for example, at a temperature of about 70 to 100 ° C., 1.5 to 10 times, preferably about 2 to 8 times in the width direction (transverse direction; TD direction) (or length direction). Stretching is performed by stretching at a low stretching ratio (for example, about 1.5 times or less) also in the length direction (longitudinal direction; MD direction) (or horizontal direction) as necessary. The stretching treatment in the case of biaxial stretching is performed, for example, at a temperature of about 70 to 100 ° C. in one direction (for example, the width direction) by 1.5 to 10 times, preferably about 2 to 8 times, and in the other direction. The stretching is performed by stretching 1.5 to 10 times, for example, about 2 to 8 times (for example, in the length direction).
[0026]
The heat shrinkage of the heat shrinkable film is at least 15% or more in one direction, preferably 30% or more. For example, in the case of a uniaxially stretched film containing a polylactic acid-based polymer as a main component, when it is immersed in hot water at 80 ° C. for 10 seconds, it is usually about 20 to 70%, preferably about 20 to 60% in the main stretching direction. is there. In the case of a biaxially stretched film containing a polylactic acid-based polymer as a main component, the heat shrinkage is usually 20 to 20 in one direction (for example, the width direction) when immersed in hot water of 80 ° C. for 10 seconds. It is about 70%, preferably about 20 to 60%, and usually about 20 to 70%, preferably about 20 to 60% in the other direction (for example, the length direction). If the heat shrinkage is too low, it is difficult to wrap the group of articles tightly. If the heat shrinkage is too high, it is difficult to manufacture, and the shrinkage stress becomes strong, resulting in deformation and shrinkage of the packaged object. Seal breakage at the time is easy to occur.
[0027]
Further, _{F 10} value of the heat-shrinkable film (tensile strength when the film specimen is extended 10% in the tensile test; Unit MPa; tensile modulus) (JIS K 7127 "plastic film and the tensile test method of sheet"(Conformity; tensile speed: 200 mm / min) is usually 0.1 to 50 MPa in the main stretching direction in the case of a uniaxially stretched film, and preferably 20 to 50 in the case of a film containing a polylactic acid-based polymer as a main component. It is about 80 MPa. _{F 10} value in the case of the biaxially stretched film in the width direction, with the length direction is usually 0.1 to 50 MPa, in case of the film composed mainly of polylactic acid polymer, preferably about 20~80MPa It is. If F ₁₀ value is too small, the waist without machining tends to be difficult, and an excessively large, easily broken by an impact, easily disturbed at the time of use.
[0028]
In the present invention, the entire circumference of the package in the row direction (the direction along the row) of the package is wound around a handle made of a soft film. Since the handle is made of a soft film, the handle is excellent in tactile sensation, and even if it is heavy, it has a sense of stability and is easy to carry. Further, even if the width of the handle is widened in order to support the package with good stability, it is easy to hold the package when it is gripped by hand, as it comes closer to the center of the package. Furthermore, since the thickness is small, not only the cost can be reduced, but also the handle does not interfere when not in use, particularly when stacking the article accumulation package. Moreover, since it is soft, it is possible to prevent the encapsulating film (heat-shrinkable film) from being torn from a portion in contact with a corner (edge) of the article. In addition, since the entire circumference of the package is wrapped with the handle, unlike when the handle is fixed to the wrapping film, when the handle is used to carry the stack of articles, local force is applied to the wrapping film. Is not added, so that the encapsulating film is not easily broken.
[0029]
Furthermore, usually, when the entire circumference of the package is wound by the handle, when the handle is held, the balance is lost and the package is easily rotated, but in the present invention, as described above, the handle is formed of a flexible film. Even if the number of rows of the group of articles to be wrapped is an even number and the shape of the articles is cylindrical, even if the entire circumference of the package is wound with a handle, the upper surface of the package is At the corner from the to the side, the handle is less likely to slip into the gap (dent) between the cylindrical articles, and the center of gravity is easily taken. Therefore, the sense of stability when holding the article accumulation package is extremely good, and it is very easy to carry.
[0030]
The material of the soft film constituting the handle may be any soft material having flexibility and elasticity, such as polylactic acid polymer, aliphatic polyester (including aromatic aliphatic polyester), and soft polyvinyl chloride. Soft resin materials such as polyethylene, ethylene or vinyl acetate polymers such as ethylene-vinyl acetate copolymers, elastomers such as polybutadiene, and mixtures thereof can be used, but are not limited thereto. As the polylactic acid-based polymer and the aliphatic polyester, those exemplified above can be used. In the case of polyethylene and the like, those having a small amount of an antiblocking agent or a lubricant and a low slip property are preferable. In particular, a film made of soft polyvinyl chloride or an ethylene-vinyl acetate copolymer having a self-adhesive surface is preferable because the handle is unlikely to shift.
[0031]
Among these, for example, aliphatic polyesters other than polylactic acid-based polymers such as polybutylene succinate (PBS), polybutylene succinate adipate (PBSA), and polycaprolactone (PCL), and polylactic acid-based polymers, Mixtures are preferred. When the handle is formed of these resins, not only is it excellent in flexibility, but it is also biodegraded even if it is disposed of in nature together with an encapsulating film formed of, for example, a polylactic acid-based polymer. Absent.
[0032]
In a particularly suitable flexible film, the proportion of the aliphatic polyester (excluding the polylactic acid-based polymer) in the total resin constituting the film is 50% by weight or more, preferably 80% by weight or more, and more preferably 90% by weight. That is all.
[0033]
The soft film may contain various additives such as a lubricant, a filler, a heat stabilizer, an antioxidant, an ultraviolet absorber, an antistatic agent, a flame retardant, and a colorant, if necessary. The flexible film may be composed of a plurality of layers. The thickness of the soft film is usually about 10 to 100 μm, preferably about 15 to 50 μm, and more preferably about 20 to 30 μm. When the thickness of the film is less than 10 μm, the mechanical strength is reduced and the film is easily broken. When the thickness of the film is more than 100 μm, the rigidity is increased and it becomes difficult to hold, and the tactile feeling at the time of holding is deteriorated.
[0034]
The soft film may be transparent, translucent, or opaque, but in order to make it easy to identify the handle, it is also necessary to use a heat-shrinkable film sealing portion or heat-shrinkable film. In order to cover the occasionally formed openings and wrinkle-like projections, it is preferable that the film is lower in transparency than at least the heat-shrinkable film, or is translucent or opaque. When the flexible film is transparent, it is preferable that the flexible film is subjected to processing such as printing so that it can be immediately identified as a handle.
[0035]
The shape of the handle is not particularly limited as long as it is easy to carry. The width of the handle is, for example, 20 to 140 mm, and in the case of an integrated package of 2 rows x 3 cans (total 6 cans) of cans (about 50 to 68 mm in diameter, for example, 250 to 500 ml cans) of soft drink or beer, etc. , And about 50 to 130 mm. If the width is less than 20 mm, the balance tends to be lost when holding the article accumulation package by hand. On the other hand, if the width is too large, the cost increases and the appearance deteriorates.
[0036]
The soft film constituting the handle can be manufactured by a conventional method for manufacturing a film, for example, an extrusion method. For example, it can be manufactured by melt-extrusion molding a resin composition obtained by adding an appropriate additive to a soft resin material as necessary using an extruder equipped with a T-die or an annular die, and cooling with a cooling roll. If necessary, a stretching treatment may be performed.
[0037]
_{F 10} value of flexible film constituting the handle (as defined above) is usually less than 40 MPa (e.g. 0.1～40MPa), preferably 30MPa or less (e.g. 0.1 to 30 MPa). If F ₁₀ value is too large, poor touch, decreased sense of stability when hanging the hands, it becomes difficult to carry, easily broken from the site in contact with the corners of the article (edge).
[0038]
The method of winding the entire circumference of the package with the handle is not particularly limited. For example, (i) the entire circumference of the package is wound with a band-shaped handle, and both ends of the band-shaped handle are coated with an adhesive or an adhesive. A method of joining or joining by heat welding such as heat sealing, fusing seal, impulse seal, and (ii) forming an annular handle by joining both ends of the band-like handle in advance by the above method. A method of inserting the package into the ring of the annular handle and winding the entire circumference of the package with the handle can be used. The pressure-sensitive adhesive and the adhesive are not particularly limited, and can be appropriately selected and used from among a solvent type, an emulsion type, a hot melt type, and the like, depending on the type of a constituent material of the handle. It is preferable to use a biodegradable adhesive such as starch paste, glue, natural rubber, etc., so that the whole package is decomposed by microorganisms and the like even if discarded in the natural world as it is. In order to make the handle hard to come off or to temporarily fix the handle, the handle and the wrapping film (heat-shrinkable film) of the package are partially joined by the above-mentioned adhesive, adhesive, heat welding or the like. You may. In this case, a pressure-sensitive adhesive or an adhesive may be previously applied to a corresponding portion of the encapsulating film.
[0039]
As shown in FIG. 1, for example, as shown in FIG. 1, the article-packaged package with handles according to the present invention includes a group of articles composed of a plurality of cylindrical articles (such as canned beer) 3 and having an even number of rows. After wrapping with a bag-shaped heat-shrinkable film (for example, a biaxially stretched film) 1 made of a polymer and heat-shrinking it by heating to produce a package in which articles are tightly packaged together, It can be manufactured by winding the entire circumference of the group of articles in the row direction with the belt-shaped soft film 5 once, joining both ends with an adhesive, an adhesive, heat welding, or the like to form a handle. The bag-shaped heat-shrinkable film 1 is obtained by rolling a wide heat-shrinkable film and heat-welding the both ends (heat seal, fusing seal, impulse seal, or the like), or laminating two wide heat-shrinkable films. Then, the two ends are heat-welded to form a sleeve (cylindrical shape), a plurality of articles are inserted therein, and the left and right ends are heat-welded. The step of forming the heat-shrinkable film into a sleeve may be performed after the insertion of the article. In FIG. 1, reference numeral 2 denotes a seal portion (heat welding portion) at the time of heat welding.
[0040]
When such a bag-shaped heat-shrinkable film 1 is heat-shrinked, a part of the seal portion 2 corresponding to the left and right ends of the sleeve-like film (usually two places at one end) is formed. 1, wrinkle-like projections 4 as shown in FIG. Since the wrinkle-like projections 4 have a poor appearance and are relatively hard and sharp, the packages may be damaged by contact between the packages, or may cause pain when touched by the consumer. Therefore, it is preferable to determine the arrangement of the articles 3 so that the wrinkled projections 4 are covered or hidden by the handle 5.
[0041]
As shown in FIG. 2, the article-packaged package with handles of the present invention also includes, as shown in FIG. 2, an article group including a plurality of cylindrical articles (canned beer or the like) 3 and having an even number of rows. After enclosing with a sleeve-shaped heat-shrinkable film (for example, a uniaxially stretched film) 10 made of a base polymer and heat-shrinking by heating to produce a package in which the articles are tightly packaged together, It can be manufactured by winding the entire circumference of the group of articles in the row direction with the belt-shaped soft film 5 once, joining both ends with an adhesive, an adhesive, heat welding, or the like to form a handle. The sleeve-shaped heat-shrinkable film 10 can be produced by rolling a wide heat-shrinkable film and heat-welding both ends, or by laminating two wide heat-shrinkable films and heat-welding both ends. . The heat-sealing of both ends of the wide heat-shrinkable film may be performed before or after inserting the article. In FIG. 2, reference numeral 2 denotes a seal portion (thermally welded portion) at the time of thermal welding.
[0042]
When such a sleeve-shaped heat-shrinkable film 10 is thermally shrunk, openings 14 as shown in FIG. 2 are formed at positions corresponding to the left and right ends of the sleeve-like heat-shrinkable film. The opening 14 has an unsightly appearance, and dust and the like easily enter the package. Therefore, it is preferable to determine the arrangement of the articles 3 so that the opening 14 is covered or hidden by the handle 5.
[0043]
Further, the strength of the seal portion 2 of the heat-shrinkable film tends to be weaker than other portions, and the appearance is not good. Therefore, it is preferable to determine the arrangement of the articles 3 so that the seal portion 2 is covered or hidden by the handle 5. In the examples of FIGS. 1 and 2, the handle 5 covers the entire circumference of the package including the surface on which the seal portion 2 of the heat-shrinkable film exists. In such an article accumulation package with a handle, the weakness of the strength of the seal portion 2 can be covered (reinforced) by the strength of the handle 5. In particular, the handle 5 made of a low-slip soft film has a high reinforcing effect.
[0044]
In the article-packaged package with a handle of the present invention, for example, as shown in FIG. 3, when the handle 5 is gripped by hand and the article-packaged package is lifted, the handle 5 is made of a soft film, and the group of articles to be wrapped. Since the number of rows is even and the shape of the article is cylindrical, the handle 5 on the upper surface of the package becomes easier to hold toward the center, and at the corner from the upper surface to the side surface of the package. The handle is difficult to be displaced by entering the gap (dent) between the cylindrical articles, and the center of gravity is easily obtained. Therefore, the article accumulation package can be carried with a sense of stability.
[0045]
【The invention's effect】
ADVANTAGE OF THE INVENTION According to the article accumulation | aggregation package with a handle of this invention, since the perimeter of the package is wound by the handle, the heat-shrinkable film which encloses a group of articles at the time of carrying hardly breaks. Further, since the handle is made of a soft film, the handle is excellent in feel and easiness of holding, and the handle does not become a hindrance at the distribution stage. Furthermore, since the handle is made of a flexible film, the number of rows of the group of articles to be wrapped is even, and the shape of the article is cylindrical, the handle is cylindrical at the corner from the top surface to the side surface of the package. Since it is difficult to slip into the gaps between the article-shaped articles, the article accumulation package can be carried with a stable feeling.
[0046]
【Example】
Hereinafter, the present invention will be described in more detail with reference to Examples, but the present invention is not limited to these Examples.
[0047]
Example 1
As the heat-shrinkable film, a heat-shrinkable film mainly composed of a polylactic acid-based polymer and an aliphatic polyester [trade name “Ecolog S SK101”, manufactured by Mitsubishi Plastics, Inc., thickness: 20 μm] was used. The heat shrinkage of this heat shrinkable film was 35% in the width direction and 25% in the length direction when immersed in hot water at 80 ° C. for 10 seconds. Further, _{F 10} value of the heat-shrinkable film was 25 MPa 35 MPa, in the longitudinal direction in the width direction.
As shown in FIG. 1, the strip-shaped heat-shrinkable film is rolled in the width direction and both ends are joined by fusing to form a sleeve, and a 350 ml can (cylindrical can) is placed in each can surface. Were arranged in an array of 2 rows × 3 in a state where they were in contact with each other, and the left and right ends of the sleeve-like film were thermally welded by a fusing seal. Subsequently, the package was introduced into a hot air tunnel at 140 ° C. to shrink the film, and a total of six 350 ml cans were tightly tightly packed to obtain a shrinkable package.
On the other hand, an aliphatic polyester [manufactured by Showa Polymer Co., Ltd., trade name "Bionole"] is melt-extruded using an extruder equipped with a T-die, cooled with a cooling roll, cut, and cut to a length of 600 mm. A soft film for a handle having a width of 120 mm and a thickness of 20 μm was prepared. _{F 10} value of the handles for flexible film was 20MPa in the length direction.
The entire circumference of the shrink-wrapped product group in the row direction was wound once around the soft film for the handle, and both ends were joined by heat sealing to obtain a handle. When the heat-shrinkable film was formed into a sleeve, a portion existing on the side surface of the package and a wrinkle-like projection formed at a portion where both ends of the sleeve-like film were sealed by fusing were covered with a handle.
When the obtained product stack with handles is held by hand, it has sufficient strength, has a good tactile sensation, has a sense of stability, is easy to carry, and the handles do not get in the way even when stacked. Was. Also, the appearance was tightly packed, and the seal portion and the wrinkle-like projections were covered with the handle, so that the appearance was good and safe. Furthermore, since the encapsulating film and the handle are formed of a biodegradable resin, the load on the environment is extremely small even if the film is disposed of naturally after use.
[0048]
Example 2
As shown in FIG. 2, a strip-shaped heat-shrinkable film similar to that in Example 1 was rolled in the width direction and both ends were joined by heat sealing to form a sleeve, into which a 350 ml can (cylindrical can) was placed. ) Were placed in an array of 2 rows × 3 with the surfaces of the cans in contact with each other. Subsequently, the package was introduced into a hot air tunnel at 140 ° C. to shrink the film, and a total of six 350 ml cans were tightly tightly packed to obtain a shrinkable package.
On the other hand, a linear low-density polyethylene film (trade name “L140” manufactured by Aicello Chemical Co., Ltd.) was cut to prepare a soft film for a handle having a length of 600 mm, a width of 120 mm and a thickness of 50 μm. _{F 10} value of the handles for flexible film was 9MPa in the length direction.
The entire circumference in the row direction of the group of articles in the shrinkable package is wound once with the soft film for the handle, and both ends are coated with an adhesive [trade name “Hybon XH249-4” manufactured by Hitachi Chemical Co., Ltd.]. Joined and used as a handle. When the heat-shrinkable film is formed into a sleeve, a portion present on the side surface of the package, and openings formed at portions corresponding to both ends of the sleeve-shaped film during heat shrink are covered with a handle. Was.
When the obtained product stack with handles is held by hand, it has sufficient strength, has a good tactile sensation, has a sense of stability, is easy to carry, and the handles do not get in the way even when stacked. Was. In addition, the external appearance is tightly packed, and the seal and the opening are covered with the handle, so that the appearance is good and the dust can be prevented from entering the inside of the package. Furthermore, since the encapsulating film and the handle are formed of a biodegradable resin, the load on the environment is extremely small even if the film is disposed of naturally after use.
[Brief description of the drawings]
FIG. 1 is a schematic view showing an example of an article-stacked package with a handle of the present invention and a manufacturing process thereof.
FIG. 2 is a schematic view showing another example of the article-packaged package with a handle of the present invention and a manufacturing process thereof.
FIG. 3 is a schematic view showing a state when the article-collecting package with a handle shown in FIG. 1 is held in a hand.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Heat-shrinkable film 2 Seal part 3 Article 4 Wrinkle-like projection 5 Handle 6 Gap between articles 10 Heat-shrinkable film 14 Opening

Claims (3)

A package comprising a plurality of cylindrical articles and having an even number of rows arranged in an array of heat-shrinkable films, and tightly enclosing the group of articles by heat shrinkage; An article-packaged body with a handle comprising a handle for use, wherein the entire circumference in the column direction of the group of articles in the package is wound by a handle made of a flexible film. Integrated packaging. Wrinkle-like projections generated at the time of heat shrinkage on the heat-welded portion of the bag-like heat-shrinkable film formed by heat welding, or both end openings formed at the time of heat shrinkage of the sleeve-like heat-shrinkable film are formed around the entire circumference of the package. The article-collecting package with a handle according to claim 1, which is covered by a handle wound around the package. The handle-equipped article according to claim 1, wherein the entire periphery of the package including the surface on which the seal portion of the bag-like or sleeve-like heat-shrinkable film is present is wound by the handle, and the seal portion is covered by the handle. Integrated packaging.

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