JP2012020742A - Packaging carton using repellent glue - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a carton having continuity in a pest repelling effect, and hardly influencing a human body in handling, in a laminated body having the pest repelling effect and a carton using the same.SOLUTION: The packaging carton is formed of a laminated body mainly including paper comprising a structure of a printed layer/a paper base material or a resin film/a printed layer/an adhesive layer/a paper base material in an order from the front surface formed by applying glue containing a repellent to a margin for assembly having a plurality of convex parts (recesses) of carton blanks, and has the pest repellent effect.

Description

  The present invention relates to a carton for food packaging, and more particularly to a laminate capable of maintaining a pest repellent effect for a long period of time and a packaging carton using the same.

  Traditionally, foods such as chocolate and other confectionery, rice and other cereals, and processed seasonings such as curry and stew have been distributed and sold in packaging boxes and bags such as paper and plastic film. Yes. In the packaging of these foods, pests such as wolfberry and scallops may break through packaging boxes and packaging bags during storage, distribution, sales, etc. There was a problem of giving unpleasantness and discomfort and significantly impairing the commercial value.

  As a means for protecting the packaged food from insect pests, it is conceivable to carry out an insecticidal process on the packaging box, packaging bag, or the like. There are two methods of insect repellent processing, one is to eliminate the gaps where pests invade, the other is to eat away the packaging material, and the other is to use repellents that release the unpleasant smell of pests and prevent access. .

  For example, as an example of the former method described in Patent Document 1, a food comprising two layers of an outermost base film and an innermost sealant layer so that pests cannot eat and break the packaging material. As packaging materials for foods, food packaging materials having an insect damage prevention function in which a silicone resin layer is applied to the surface of a base film have been proposed.

In packaging materials such as paper cartons, repellents that keep insects away are used because it is difficult to completely eliminate gaps at the time of packaging and to prevent opening of packaging materials by insects. Many methods have been proposed.
Pest repellents include pyrethroid compounds used in agricultural and household insecticides that have a high insect repellent effect, but these compounds are feared to be dangerous to the human body. It was inappropriate to use it for packaging boxes, etc. and it was unsatisfactory in the persistence of the insect repellent effect.

  Therefore, in recent years, as an alternative, a pest repellent using copaiba oil containing β-caryophyllene has attracted attention. For example, Patent Document 2 shows a result that a sufficient repellent effect and gloss can be obtained by using oily copaiba oil added to a wax for floor made of acrylic resin.

  Patent Document 2 proposes that copaiba oil and caryophyllene be adsorbed, mixed, and impregnated on a suitable carrier to be used as a solid agent, and Patent Document 3 further discloses a slow-release containing copaiba oil and / or caryophyllene. It has been proposed to use releasable porous fine particles for applications such as packaging materials.

As an example in which the insect repellent such as copaiba oil is applied to a food packaging container such as a paper carton, for example, in Patent Document 4, a food packaging that can be easily applied to a food packaging container that does not require a barrier property As a container, a food packaging container having a pest repellent function, in which a bitter emetic is applied as a pest repellent functional coating on the outer surface of a paper cup body or the like, has been proposed.
Patent Document 5 also discloses a contact repellent-type drug only on the surface of a portion that can become a pest invasion path when assembled in a paper box for the purpose of providing a low-priced insect-proof carton excellent in economic efficiency. A carton has been proposed in which a mixed overcoat varnish layer is formed.

As a method for expecting a long-lasting effect of the repellent, in Patent Document 6, it has excellent gloss and has slipperiness that does not cause a decrease in workability, and an excellent repellent effect lasts for a certain period of time. For the purpose of providing a laminate, a hot press coat layer made of a transparent resin is formed by performing hot-press pressing on a metal plate surface called a continuous ferro plate made of a mirror surface. It is said that a paper carton consisting of a protruding surface can be obtained.
Patent Document 7 discloses an active energy ray-curable composition on a base sheet as a resin coating laminate in which a sustained release technique for sanitary insect repellent active compounds is applied without applying a technique such as microcapsule. A laminate having a cured resin layer obtained by applying a coating material containing a sanitary pest repellent active compound and irradiating with active energy rays has been proposed.

However, in the method of applying the pest repellent as described above, since the repellent is applied to the surface of the packaging material such as food, the repellent effect is reduced in a short period of time due to the volatilization of the repellent into the atmosphere. Was inevitable.
In addition, since the surface containing the repellent drug is a part that directly touches the human hand, the influence of the drug on the human body during handling is considered dangerous, and the selection range of the repellent drug is inevitably limited.
In view of the above problems relating to cartons for food packaging, there has been a demand for a carton that has a pest repellent effect that lasts for a long time and can be handled safely.

JP 2006-36270 A. JP 2001-348304 A JP 2002-308705 A JP 2002-255187 A JP 2003-292056 A JP 2004-122445 A JP 2005-144257 A

  An object of the present invention is to provide a packaging carton having a pest repellent effect continuity in a laminate having a pest repellent effect and a carton using the same, and having little influence on the human body during handling.

  The invention of claim 1 of the present invention is a packaging carton having a pest repellent effect, comprising a laminate mainly composed of paper, wherein a paste containing a repellent is applied to the paste margin for assembly. is there.

According to the first aspect of the present invention, the pest repellent having a pest repellent effect contained in the paste for assembling the carton is applied to the paste margin of the carton blanks, so that it can be avoided from the bonded portion of the assembled carton. The approach of pests is prevented by gradually evaporating the agent.
Compared with the case where the repellent is formed on the surface of the carton by coating, it is possible to extend the period during which the repellent effect lasts in combination with the large amount of coating that can be applied.
Further, since the repellent drug is not located on the outermost surface of the carton that is touched by the hand during handling, it is possible to provide a packaging carton having an effect that the human body is less affected during handling.

This results in a short-term decline in the repellent effect due to the early volatilization of the repellent drug into the atmosphere, which is inevitable in the case of a conventional carton with a repellent layer on the surface, and contains the repellent drug Since the surface is a part that directly touches the human hand, the selection range of the repellent is no longer significantly restricted due to concerns about the effect of the drug on the human body during handling.
In addition to natural repellents that have relatively little effect on the human body, it is possible to select drugs that can be used with peace of mind among synthetic repellents that may cause serious symptoms when ingested. As a result, efficient use of drugs has become possible.

In addition, since the layer containing the repellent agent is located on the surface of the adhesive margin portion between the laminates and does not exist in a visible place outside the carton, the degree of freedom in printing design applied to the carton surface is increased.
The shape of the region where the paste layer containing the repellent of the paste margin part is provided may be the entire paste part or a partial shape.

  The invention according to claim 2 is characterized in that the laminate mainly composed of paper is composed of a printing layer / paper substrate or a resin film / printing layer / adhesive layer / paper substrate. A packaging carton having a pest repellent effect described in 1.

  According to the invention described in claim 2, since the printing layer of the laminate is provided on the carton surface or just inside the resin film, it is possible to directly see beautiful printing with an increased degree of design freedom. Moreover, the tolerance required as a packaging container can be easily provided by setting it as the structure containing a resin film in the carton surface.

The invention of claim 3 is the packaging carton having an insect repellent effect according to claim 1 or 2, wherein the assembling glue margin has a plurality of recesses (dents).
According to the invention described in claim 3, the adhesive applied to the adhesive margin is uniformly applied in a predetermined amount without being repelled on the surface of the paper substrate or resin film, and the function and repellent of bonding for carton assembly It is possible to appropriately fulfill the two functions of maintaining the repellent effect by forming an adhesive layer containing, in an amount that cannot be achieved only by coating on a smooth surface.

  The invention of claim 4 is the carton having an insect repellent effect according to claim 3, wherein the shape of the plurality of recesses is a sewing line, a circle, an ellipse, a quadrangle, and a cross.

  According to the present invention, the layer containing a repellent having a pest repellent effect is provided not on the surface of the carton, but on the inner side between the layers constituting the carton. Since no repellent is located, it is possible to provide a carton with less influence on the human body during handling. In addition, since a plurality of recesses are formed in the paste margin for assembly, a sufficient amount of paste containing the repellent can be present, and the volatilization of the drug is easy. The carton can be controlled so that the volatilization rate can be controlled and the volatilization rate can be controlled by the size and arrangement density of the recesses.

  As described above, according to the packaging carton having the pest repellent effect of the present invention, it is possible to provide a packaging film carton that has continuity of the pest repellent effect and has little influence on the human body during handling.

The shape example of the blanks (a) and carton (b) used for the carton of this invention. The cross-sectional schematic which shows the example of the layer structure of the laminated body of the carton of this invention. (A) is the configuration of the printing layer / paper substrate, (b) is the configuration of the resin film / printing layer / adhesive layer / paper substrate. The schematic diagram in case the some recessed part provided in the glue margin part of the carton of this invention is circular. (A) is a cross-sectional schematic diagram when the paste coating surface is at the top, and (b) is a schematic plan view seen from the surface. The plane schematic diagram of the other shape example of the some recessed part provided in the glue margin part of the carton of this invention. Examples of (a) sewing line, (b) quadrangle, (c) × shape.

  Hereinafter, an example of an embodiment of a packaging carton having a pest repellent function according to the present invention will be described with reference to the drawings if necessary.

  In the packaging carton having a pest repellent function of the present invention, paper or a laminate based on paper is used depending on the properties of the contents stored in the container and the storage conditions. Then, this paper or laminate is punched into a predetermined shape according to the shape of the container, and at the same time, it is formed as blanks in which a plurality of concave portions are provided in a folding ruled line and an assembling paste margin. A carton is manufactured by folding the blanks along the ruled lines and assembling and bonding the necessary parts.

For example, the packaging carton schematically shown in FIG. 1 (b) can be easily manufactured from the blanks shown in the developed view of FIG. 1 (a) by the following ordinary method.
When a general paper box blank is folded to form a box, first, the blank (10) is supplied from the paper feeding unit of the box making machine to the folding unit, and then fed to the bottom folding unit. Then, the bottom plate (12) and the top plate (11) are folded inward to overlap the side plate (13), and the flap (15) is folded inward.

Next, in the gluing portion, a glue layer is formed on the back side of the gluing portion (14), and then the remaining bottom plate is folded inward to overlap the side plate. The blanks on the back side have a plurality of recesses formed in advance by a method such as mold embossing, and the assembly glue applied by the glue pulley or the jet type applicator nozzle is applied to the entire surface of the glue margin part or partially. A paste layer is formed in a pattern.
Next, the side plate is folded in the main folding portion, and the carton in a state where the glue layer of the adhesive margin portion is bonded to the side plate and folded is completed.

  In the carton according to the present invention, since there are a plurality of recesses in the glue margin part, the application thickness of the glue for assembly is partially increased, and in this state, drying of the glue in the glue margin part (adhesive part) is not completed Therefore, the carton is conveyed while being crimped by a pair of upper and lower pressure-bonding belts of the pressure-conveying and conveying part to promote the adhesion of the adhesive margin part to complete the molding, and is discharged to the next process by the discharging part.

  The folded carton is filled with the contents and the necessary parts are sealed by a filling device to complete the used carton (20) of the present invention. In the figure, the carton is opened for easy understanding.

An embodiment of a packaging carton having a pest repellent effect of the present invention that can be produced by such a method will be described below with reference to the drawings as necessary.
The packaging carton having the insect repellent effect of the present invention is, for example, a carton (b) formed by assembling blanks as shown in FIG.

  As shown in FIG. 2A, the laminate (1) used for the blanks is composed of at least a printing layer (4) / paper substrate (6) in order from the surface of the carton. It consists of resin film (2) / printing layer (4) / adhesive layer (5) / paper substrate (6) (FIG. 2 (b)), and a plurality of recesses (7) are provided on the surface of the adhesive margin. It is.

FIG. 3 shows a schematic diagram in the case where a plurality of recesses provided in the adhesive margin of the carton of the present invention are circular. (A) is a cross-sectional schematic diagram when the adhesive coating surface is at the top, and (b) is a schematic plan view seen from the surface.
FIG. 4 shows a schematic plan view of another shape example of a plurality of concave portions provided in the adhesive margin of the carton of the present invention. (A) is a sewing machine line, (b) is a quadrangle, and (c) is an example of an X shape.

  The packaging carton having a pest repellent effect of the present invention is mixed with a pest repellent in the paste for carton assembly and applied to the paste margin part of the carton blanks, so that the repellent is volatilized from the bonded part of the assembled carton. Since the application amount can be increased as compared with the surface coating, the duration of the repellent effect is prolonged, and the repellent drug is not located on the outermost surface, so that the human body is not affected during production or consumption.

  As the assembly glue used in the carton of the present invention, a usual emulsion adhesive is used, and there are a pulley (glue wheel) and a spray type (applicator nozzle) as an application method. The pest repellent may be mixed with the assembling paste in a stock solution state or a microencapsulated state. In any case, the blending amount is desirably around 10% in order to exhibit a pest repellent effect without impairing the adhesive function as a paste. If the amount is about this level, the amount of the repellent is about twice that of the case where the repellent is applied to the varnish on the carton surface and the pest repellent effect is improved.

  In the packaging carton having the insect repellent effect of the present invention, the resin film (2) has a gas permeation-blocking property and can be used as a normal resin film that can be printed or embossed. In the carton laminated with the paper substrate (6) for the above purposes, a stretched film of polypropylene resin (PP), polyethylene terephthalate resin (PET), and nylon resin (Ny) is desirable from the viewpoint of dimensional stability. The stretching direction of the film may be biaxial stretching or uniaxial stretching. Although the thickness of the resin film (2) can be determined as appropriate, a thickness in the range of 15 to 60 μm is usually used.

  FIG. 3 is a schematic diagram showing the shape and depth of the concave portion (7) having a circular cross section provided in the glue margin of the carton of the present invention, and FIG. 4 is provided in the glue margin of the carton of the present invention. It is the schematic diagram of the other example which shows the shape of a recessed part, and has illustrated about (a) sewing machine line, (b) square, (c) x shape.

The plurality of recesses (7) are provided in order to prevent the assembly paste containing the repellent from being repelled on the surface of the adhesive margin portion and to secure the coating amount of the assembly paste layer. It can be formed by inserting a half-cutting blade with a blade.
The size and number of formations (density) of the plurality of recesses (7) are not particularly limited, but from the viewpoint of eliminating variation in the coating thickness of the paste for assembly and reducing the surface area of the paste, the shape (planar shape) is circular, An ellipse or a shape having good symmetry such as a sewing line, a quadrangle, or an X shape as illustrated in FIG. 4 is desirable.

The repellent compounded in the assembly paste contains a repellent component that is harmful to pests, and is a component for preventing the pests from coming into contact with the carton by volatilization of the component.
The repellent may contain one or more selected from insecticidal ingredients, natural ingredients, plant essential oils and the like.

  Insecticidal components include, for example, pyrethrin, cineline, jasmolin, allethrin, phthalthrin, resmethrin, framethrin, phenothrin, permethrin, imibrothrin, ciphenothrin, tralomethrin, etofenprox, praretrin, cyfluthrin, biflumethrin, flumethrin, flumethrin, flumethrin, flumethrin And pyrethroids such as empentrin, metfurthrin, transfluthrin.

  As the natural component, natural components having a pest repellent effect, an insecticidal effect and the like are preferable. For example, p-menthan-8-ene-1,2-diol, caran-3,4-diol, p-menthane-3,8 -Diol, 2,3,4,5-bis (Δ2-butylene) tetrahydrofurfural, di-n-propylisocin coronate, di-n-butyl succinate, 2-hydroxyoctyl sulfide, (N-carbohydrate) -Sec-Butyloxy) -2- (2'-Hydroxyethyl-piperidine α-pinene, geraniol, citronellal, camphor, linalool, casinomal, cariophyllene, and the like.

  Plant essential oils include, for example, tea tree oil, pine, cypress, camphor, hiba, citronella, rose, geranium, cedarwood, lavender, anise, spearmint, nutmeg, peppermint, cinnamon, clove, eucalyptus, garlic, marjoram, palmarosa, cumin , Cilantro, origanum, mint, lemon peel, rosemary, hyssop oil, copaiba oil and the like. Copaiba oil is a substance that has been approved as a food additive as a natural fragrance that does not adversely affect the human body.

The printed layer (4) shown in FIG. 2 (b) is a layer in which a pattern, characters, and the like as required are printed on the back surface of the resin film (2). As shown in FIG. As compared with the case of printing on the surface of), the effect of being able to print more beautifully by printing on a smooth film surface is also achieved. The printing layer (4) can be formed by a known printing method such as gravure printing using ordinary ink. Examples of the ink used for the printing layer include Fine Star (Toyo Ink Manufacturing) LPGT (Toyo Ink Manufacturing) and the like.
The print layer (4) can also be printed on paper. When printing on paper, offset or gravure printing can be performed using, for example, Carton X (Toyo Ink Manufacturing Co., Ltd.).

  The adhesive layer (5) shown in FIG. 2 (b) is a layer for adhering the resin film (2) and the paper substrate (6). As an adhesion method, a normal dry lamination method or wet lamination method can be used. As the adhesive used for the adhesive layer (5), an ordinary polyether-based or vinyl acetate-based heat-sensitive adhesive can be used. Examples include A969V / A5 (Mitsui Takeda Chemical), TM242A / TM242B (Toyo Morton) RC902 (Sanden Chemical), and the like.

The paper substrate (6) is a substrate constituting the packaging carton of the present invention, and a paperboard such as a coated ball is used. As the paper substrate used in the present invention, a paperboard such as a coated ball having a basis weight of 230 to 550 g / m ² and a thickness of 0.3 to 0.8 mm can be used.
Particularly preferred ranges are a basis weight of 230 to 310 g / m ² and a thickness of 0.3 to 0.5 mm.

Examples of embodiments of the present invention will be described below by way of examples.
<Example 1>
Using JET Star H (basis weight 230 g / m ² ) (Nihon Daishowa Paper Co., Ltd.) as a paper base material, printing is performed on the surface using printing ink Carton X (Toyo Ink Manufacturing Co., Ltd.) by the offset printing method and laminated Created the body.
The required folding lines are engraved on this laminate, and at the same time, a half-cutting edge is put in the adhesive margin with a Thomson blade to form a circular recess having a diameter of 1 mm at a density of 10 pieces / cm ² , and then punched into a predetermined shape. It was created.

Apply the paste containing repellent to the blank margin of this blank with a pulley (glue wheel), stick the glue margin and the side plate end, and apply the sack. A 5 cm square carton for packaging was prepared by assembling in a folded state, and baked sugar as an attractant was enclosed as the contents.
As a paste containing a repellent, a paste containing 10% of copaiba oil (stock solution) as a repellent was used in AV-650Y-6T (life bond). The average amount of glue applied was 60 g / m ² .

Using the carton filled with the contents, an experiment was conducted to calculate the pest repellent rate by selecting larvae of Noshimema Raiga as the target pest. The experiment was carried out by counting the number of invading or adhering to the outside of the 20 larvae of Noshimema Raiga, and the repelling rate was calculated by the following formula. This experiment was repeated 5 times. As a result, the repelling rate was 62%.
Repelling rate = (number of test insects−number of insects attached to the box−number of insects invading the box) / number of test insects × 100 (%)

<Example 2>
Using a multicolor gravure printing machine on one side of a 20 μm thick biaxially stretched transparent polyethylene terephthalate (PET) film that has been subjected to double-sided corona treatment, the pattern printing layer is applied using printing ink LPGT (Toyo Ink). did.
Adhesive TM242A / B (Toyo Morton) was applied to the printed layer surface with a dry laminator at a film thickness of 60 μm, and dry-laminated with a paper substrate JET Star H (basis weight 230 g / m ² ) (Nihon Daishowa Paper). A laminate was created.
In addition to engraving the necessary polygonal lines on this laminate, a half-cut edge is formed in the glue margin with a Thomson blade to form a circular recess with a diameter of 1 mm at a density of 10 pieces / cm ² , and then blanks are punched into a predetermined shape. Created.

Apply the paste containing repellent to the blank margin of this blank with a pulley (glue wheel), stick the glue margin and the side plate end, and apply the sack. A 5 cm square carton for packaging was prepared by assembling in a folded state, and baked sugar as an attractant was enclosed as the contents.
As a paste containing a repellent, a paste containing 10% of copaiba oil (stock solution) as a repellent was used in AV-650Y-6T (life bond). The average amount of glue applied was 60 g / m ² .
A carton was prepared in the same manner as in Example 1 and the repelling rate using the carton was calculated. As a result, the repelling rate was 60%.

<Comparative Example 1>
A carton was prepared in the same manner as in Example 1 except that a paste (AV-650Y-6T) containing no repellent was used for the paste applied to the blank margin of the blanks, and the repelling rate using the carton was calculated. . The result was an evasion rate of 11%.
<Comparative example 2>
A carton was prepared in the same manner as in Example 2 except that a paste (AV-650Y-6T) containing no repellent was used as the paste applied to the blank margin of the blanks, and the repelling rate using the carton was calculated. . The result was an evasion rate of 11%.

From the results of the pest repellent rate as described above, the pest repellent effect of the carton of the present invention is clearly improved compared to the conventional carton, and the repellent rate exceeding 60% is achieved in the cartons of Example 1 and Example 2. In addition, a remarkable effect is shown in comparison with the repelling rate of 11%, which is the result of the comparative example.
Thus, according to the carton of the present invention, a packaging carton having a pest repellent effect having a structure in which the repellent drug is contained in the assembly paste and the repellent drug is not located on the outermost surface of the laminate that is touched by the hand during handling. It became clear that it was possible to provide.

DESCRIPTION OF SYMBOLS 1 ... Laminate 2 ... Resin film 4 ... Printing layer 5 ... Adhesive layer 6 ... Paper base material 7 ... Concave 10 ... Blanks 11 ... Top plate 12 ... Bottom plate 13 ... Side plate 14 ... Paste margin 15 ... Flap 20 ... Carton d ... recess diameter h ... recess depth

Claims (4)

  A packaging carton having a pest repellent effect, comprising a laminate mainly composed of paper, wherein paste including a repellent is applied to a paste margin for assembly.   The pest repellent effect according to claim 1, wherein the laminate mainly composed of paper is composed of a printing layer / paper substrate or a resin film / printing layer / adhesive layer / paper substrate in order from the surface. Having carton for packaging.   The packaging carton having an insect repellent effect according to claim 1 or 2, wherein the assembling glue margin has a plurality of recesses (dents).   The carton having an insect repellent effect according to claim 3, wherein the plurality of concave portions have a sewing line, a circle, an ellipse, a quadrangle, and an X shape.

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