JPH11147516A - Carton fitted with handle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve adhesive strength at both ends and to prevent deterioration on standing by a method wherein a handle-forming tape is arranged with its middle part set against the upside of a carton and each of both ends thereof is put between each of inner flaps and each of outer flaps at side faces of the carton and joined to the flaps at both of the side faces. SOLUTION: Metal cans 14 each filled with beer or the like are packed into a carton 11 and a package 10 is formed therewith. Each of side faces 11e of the carton 11 is constructed of inner flaps 11e (a) and 11e (c) extending respectively from an upper face 11a and a bottom face 11c of the carton and outer flaps 11e (b) and 11e (d) extending respectively from a front face 11b and a rear face 11d of the carton and stuck to the outside of the inner flaps. A handle-forming plastic tape 12 is set against the upside of the carton 11 with its middle part unstuck to the upside. Each of both ends 12b of the tape is put between each of the inner flaps 11e (a) and each of the outer flaps 11e (b) and 11e (d) and fixed by sticking. The tape is not broken even thouth it is hung down from a hanging hook and left as it is for three days, proving that adhesive strength is improved while deterioration on standing is prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a carton with a handle. More specifically, food such as beverages and food, paint,
The present invention relates to a carton filled with a large number of containers enclosing daily goods such as lubricating oil, industrial goods and the like, and having a handle which is convenient for carrying and carrying.

[0002]

2. Description of the Related Art Conventionally, everyday goods such as paints and lubricating oils, industrial goods, etc. are usually filled in metal cans, and beverages such as juice, beer, natural water and foods such as marine products and fruits are usually filled in the metal cans. In addition, filled in plastic cans and glass bottles,
For example, a dozen or two dozen units have been sold in cartons.

[0003] Since such a carton is heavy, a method of forming a handle on the upper surface of the carton has been adopted in many cases for convenient carrying. The simplest and already industrially adopted configuration is that the carton has an elongated
Means for providing two perforations in parallel (FIG. 5) and means for forming two elongated perforations in parallel by carrying a hand-carriage by pushing along the perforation for cutting provided on the upper surface of the carton (FIG. 6) ) So that fingers can be inserted into these holes.

[0004] This will be described in more detail. FIG. 5 shows an example of a conventional mode, and is a partially cutaway perspective view of a box 50 in which metal cans 54, 54... Carton top 51a, front 51
b, a bottom surface 51c, a rear surface 51d, and left and right side surfaces 51e, each side surface of each inner flap 51 extending from the top and bottom surfaces.
Outer flaps 51e (b) and 51e (d) extending from the front surface and the rear surface are superimposed on the outside of e (a) and 51e (c), and are joined by using a hot melt type adhesive ( The position of the tip of each inner flap is indicated by a dashed line). The upper surface is formed by joining an outer layer embedded with a reinforcing material 59 such as a synthetic resin stretched tape and the inner layer extending from the front surface to reach a tip 56 (shown by a broken line) as a seam, as shown by a dashed line. On both outer sides of the reinforcing material and the joint end, elongated perforations 57, 57 are formed so that fingers can be inserted and grasped. When such a means for providing a perforation is used, there is a risk that foreign matter such as dust may enter the perforation before being used, and the lid surface of the can 54 will be soiled. In this case, it is not preferable from the viewpoint of hygiene.
Further, even if the user inserts a finger through the above-mentioned hole and tries to carry the finger, the finger is sandwiched between the low-elongation carton and the can, and the tenderness is particularly caused by the reinforcing material 59 or the reinforcing effect by joining the inner and outer layers. Receiving it is unavoidable, and is not desirable in this regard. Further, the work of interposing the reinforcing material or forming the perforations complicates the carton manufacturing process.

[0005] Fig. 6 is a perspective view of a box 60 which has been used in the past, with a display corresponding to Fig. 5 except for the perforations of Fig. 5, and a top surface 61a is shown by a dashed line, and is drawn by a synthetic resin stretched tape. And the inner layer extending from the front surface 61b and reaching the tip 66 (shown by a broken line) as a seam, and cutting is performed on both outer sides of the reinforcing material and the seam. For use, perforations 68, 68 are provided, and the perforations are broken by pressing the perforated portions during use to provide perforations. Unlike the case described above, when the perforations are not provided in advance, there is no risk of foreign matter entering before transporting, but the same problem may occur over time after transporting, and there is strong tenderness on the fingers. That is inevitable. Further, the operation of interposing a reinforcing material or forming perforations complicates the production process of the carton similarly.

As a method for solving the above various problems,
On the top of the carton, a plastic tape with a non-adhesive handle is placed on the top of the carton, and both ends following the handle are adhered to the surfaces on both sides of the carton, allowing the carton to be carried by hand. (Japanese Utility Model Laid-Open No. 3-72663). However, in this case, the bonding is performed by bonding a plastic tape to both side surfaces of the carton via an adhesive, and the outer surface of the carton, the adhesive layer and the tape surface are subjected to shearing force due to the large load of the carton, and among these, in particular, Since the load applied to the outer surface of the carton is a concentrated load on one side surface, the outer surface of the carton is likely to be damaged, and thus the possibility of losing the carrying function is high. Moreover, the adhesive portion is often exposed to direct sunlight, moisture, etc., and is susceptible to damage due to friction when the cartons are in contact with each other, resulting in a decrease in the shear resistance of the carton and the adhesive layer at the corresponding portion. Is left.

[0007]

Accordingly, the present invention provides a carton with a handle in which the center of the handle tape is placed on the upper surface of the carton and both ends are fixed to both sides of the carton. An object of the present invention is to provide a carton with a handle which can be raised and fixed and maintained so as not to deteriorate with time.

[0008]

The inventor of the present invention has made intensive studies to solve the above-mentioned problems. As a result, the present invention has been made by sandwiching and joining both ends of the handle tape between flaps forming both sides of the carton. Was successfully solved to the extent that there was no practical problem, and the present invention was completed. That is, the gist of the present invention is as follows: (1) In a carton with a handle in which a center portion of a handle tape is opposed to an upper surface of a carton and both end portions are fixed to both side surfaces of the carton, both ends of the tape are: A carton with a handle, which is sandwiched between an inner flap and an outer flap constituting both side surfaces of the carton, and both front and back surfaces of both ends are joined to the both flaps. (2) The carton with a handle according to the above (1), wherein the joining between the both end portions of the handle tape and both flaps of the carton is performed by an adhesive or a solidifying adhesive. (3) The first component in which the main component of the handle tape is a polypropylene resin, a polyethylene resin, a polyester resin, a polyamide resin, or a polyvinyl chloride resin.
Or the carton with a handle according to the second item.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The contents of the present invention will be described below in detail with reference to the drawings showing one embodiment. FIG. 1 shows one embodiment of the present invention, and is a perspective view of a box 10 in which metal cans 14, 14,... The carton 11 has a top surface 11a, a front surface 11b, a bottom surface 11c, a rear surface 11d, and both side surfaces 11e, and the both side surfaces are inner flaps 11 extending from the top surface and the bottom surface.
e (a), 11e (c) and outer flaps 1 extending from the front and rear surfaces, which are superimposed on their outer surfaces via an adhesive.
1e (b) and 11e (d). On the upper surface of the carton, the central portion of the handle plastic tape 12 is opposed to the non-adhered state, and both end portions 12b are inner flaps 11e.
(A) and the outer flaps 11e (b) and 11e (d), and the end and the inner and outer flaps are joined and fixed using an adhesive. Here, the case where both outer flaps have the same length and the respective ends are abutted has been described. However, the length is set to be long enough to be overlapped. As a result, a difference occurs in a bonding area between the end portion 12b of the tape and each outer flap. Does not impair the effects of the present invention. Note that 11e (a) -1 and 11e (c) -1 indicated by broken lines in the figure indicate the positions of the leading edges of the inner flaps.

The material of the carton used in the present invention is not particularly limited, and conventionally used corrugated paper or cardboard can be used as it is. As a characteristic of the plastic handle tape 12, it is preferable that the plastic tape 12 can be slightly extended by inserting a finger between the tape and the carton. Therefore, depending on the material, the thickness is changed in consideration of the weight of the packed carton such as a can, or a pretreatment such as a stretching treatment is appropriately performed. The width is not particularly limited, but is preferably about 2 to 10 cm because tenderness due to the concentrated load is not applied to the fingers. Further, the length of both ends of the grip plastic tape 12 to be joined to the flap is not particularly limited, but in order to sufficiently and stably exhibit the effects of the present invention, the length is 3 to 30 cm. Is preferred. However, in the case of inlining described with reference to FIG. 4, the length is the same as the length of the inner flap. It should be noted that the central portion 12a of the handle plastic tape 12 can be appropriately printed instead of being printed on the surface of the carton, which is convenient when there are many types of contents in the box.

The material of the plastic tape for grip 12 is not particularly limited. However, considering the breaking strength, the feel given to the fingers, etc., a polypropylene resin, a polyethylene resin, a polyester resin, a polyamide resin or a polychlorinated resin. Those containing a vinyl resin as a main component are usually preferably used. In particular, in view of the feeling given to the fingers, a soft polypropylene-based resin is more preferable, and specific examples include a polypropylene-based copolymer containing an ethylene unit. Furthermore, medium density or high density polyethylene or a copolymer thereof can be preferably used.

The adhesive for bonding the outer and inner surfaces of the inner and outer flaps of the carton to the plastic tape 12 for gripping is not particularly limited, and a commercially available adhesive can be used as appropriate. In addition to such a solidifying or curable adhesive, a low-flow adhesive is suitably used. Further, a hot-melt type solidifying adhesive or pressure-sensitive adhesive such as ethylene-vinyl acetate copolymer may be used. As the adhesive between the inner and outer flaps, the above-mentioned various solidifying or curable adhesives and low-flow adhesives are appropriately used, and a hot-melt adhesive is particularly preferable. When the joining between the plastic tape for handle and the inner flap and the joining between the flaps are performed in-line, a hot melt type is preferably used in terms of handling.

FIG. 2 is a perspective view of the carton with a handle shown in FIG. 1 in a state in which fingers are inserted between the central portion 12a, which is a handle portion, and the upper surface 11a of the carton, gripped and lifted. Except that the central portion 22a of the gripping plastic tape 22 is lifted by the fingers 25, it is the same as the case of FIG.
The symbols are assigned corresponding to FIG.

FIG. 3 is a perspective view of the carton with a handle of FIG. 1 in the process of being manufactured. Carton 31 is upper surface 31a,
Front 31b, bottom 31c, rear 31d, left and right side 3
1e, 31e, the side surfaces of which are an inner flap 31e (a) extending from the upper surface 31a, an inner flap 31e (c) extending from the bottom surface 31c, an outer flap 31e (b) extending from the front surface 31b, and an outer flap extending from the rear surface 31d. 31e (d). On the surface of the upper surface 31a,
A plastic tape 32 for the handle is opposed to the central portion 32.
a constitutes a handle, and the joining of the tape to the inner flap 31e (a) and the outer flaps 31e (b), 31e (d) is performed at both ends 32b. That is, the outer flap is joined to the outer side of the inner flap by sandwiching the tape.

FIG. 4 is an exploded view of the carton with a handle of FIG. The type corresponding to this developed view is made by flowing a long base paper for carton in the direction of arrow A. That is, a hot-melt adhesive is applied to the portion where the printed carton base paper flowing in the direction A and the plastic plastic tape 42 are joined (the portion indicated by 42b in FIG. 4).
The gripping plastic tape 42 is flown while being positioned so as to overlap with the relevant portion, and is bonded to the carton base paper by a pressure roll. Subsequently, the carton base paper is cut in a direction perpendicular to the flow direction (direction of arrow B) so as to have a predetermined size, and fold lines are formed between the respective surfaces and between the respective surfaces and the respective flaps. Processing such as forming a grooved portion 45 for facilitating the formation of the side surface of the carton is performed between them, and the developed sheet of the carton shown in FIG. 4 is completed.

[0016]

Embodiment 1 A carton with a handle having the shape shown in FIG.
13cm × 27cm on top, 20cm × 27cm on front
A uniaxially stretched tape using an ethylene-propylene copolymer and having a width of 4 cm was attached to the inner and outer flaps of a carton having the following dimensions to produce a carton. A hot melt type adhesive mainly composed of an ethylene-vinyl acetate copolymer was used for joining the flap of the carton to the handle tape and joining between the inner and outer flaps. The size of the joint between the handle tape and the flap is 4 cm x 7
cm. Pack a dozen cans of 350cc beer,
He inserted his finger into the handle of the tape and lifted it, but did not feel tenderness. In order to determine the number of days until the adhesive portion between the tape and the flap was damaged, the sample was left at 35 ° C. × 60% RH. However, no damage was observed after 3 days.

[0017]

[Comparative Example 1] In Example 1, the inner and outer flaps were used as outer and inner flaps in reverse, respectively, and the adhesive portions at both ends of the handle tape were exposed to the outside, and the same number of days as in Example 1 was examined. However, in 2 days, 50% of the tests were damaged.

[0018]

The plastic tape for grips is placed on the upper surface of the carton, and both ends are gripped and joined between the inner and outer flaps on both sides of the carton, as compared to the case where the plastic tape is joined to the outermost side surface. Although the bonding area with the flap doubled, improvements over both doublings in both adhesive strength and aging were observed. Further, practically, there is a great effect that there is no possibility that the joint may be damaged by an external force such as friction generated during the transportation of cartons between trucks. Further, the effect that the aesthetic appearance is improved because the joint is not visible to the outside is obtained.

[Brief description of the drawings]

FIG. 1 is a perspective view of a box in which a metal can filled with beer or the like is packed in a carton.

FIG. 2 is a perspective view of a state in which fingers are inserted between a handle part and an upper surface of the carton in FIG. 1 and lifted.

FIG. 3 is a perspective view of the carton with a handle in FIG. 1 in the process of being manufactured;

FIG. 4 is a development view of the carton with a handle in FIG. 3;

FIG. 5 is a perspective view of a box in which perforations are provided in advance on the upper surface of the carton.

FIG. 6 is a perspective view of a box provided with a cutting perforation instead of the perforation of FIG. 5;

[Explanation of symbols]

·········································································································· Carton 31 ········ Unfinished carton 11a, 21a, 31a, 41a, 51a, 61a
... Carton upper surface 11b, 21b, 31b, 41b, 51b, 61b
... Front of carton 11c, 21c, 31c, 41c, 51c, 61c
... Carton bottom surfaces 11d, 21d, 31d, 41d, 51d, 61d
... Back of carton 11e, 21e, 31e, 41e, 51e, 61e
... Carton side surface 11e (a), 11e (c), 21e (a), 21e
(C), 31e (a), 31e (c), 41e (a),
41e (c), 51e (a), 51e (c), 61e
(A), 61e (c) ... inner flap 11e (b), 11e (d), 21e (b), 21e
(D), 31e (b), 31e (d), 41e (b),
41e (d), 51e (b), 51e (d), 61e
(B), 61e (d) ... outer flap 11e (b, d) ... butting part 11e (a) -1, 11e (c) of both end edges of the outer flap -1... Tip edge of inner flap 12, 22, 32, 42... Handle plastic tape 12a, 22a, 32a, 42a... Center of handle plastic tape 12b, 22b,. 32b, 42b ... Both ends of plastic tape for handle 14, 24, 54, 64 ... Metal can 25 ... Hand 45 Groove cutting part 46 Seam allowance 56, 66 ····························· Perforated 59, 69 ..... reinforcement 68 · · · · · · · · cutting perforation

Claims (3)

[Claims] 1. A carton with a handle wherein a center portion of a handle tape is opposed to an upper surface of a carton, and both end portions are fixed to both side surfaces of the carton, wherein both end portions of the tape form both side surfaces of the carton. A carton with a handle, wherein the carton is sandwiched between the inner flap and the outer flap, and both front and back surfaces of the both ends are joined to the two flaps. 2. The carton with a handle according to claim 1, wherein the joining between the both ends of the handle tape and both flaps of the carton is performed by an adhesive or a solidifying adhesive. 3. The carton with a handle according to claim 1, wherein a main component of the handle tape is a polypropylene resin, a polyethylene resin, a polyester resin, a polyamide resin or a polyvinyl chloride resin.