JP2000203686A - Ice cream packaging material and conical ice cream packaging member made of the ice cream packaging material - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an ice cream packaging material and a conical ice cream packaging member in which its seal section does not produce any interface peeling-off under a cryogenic environment. SOLUTION: An ice cream packaging material is made such that a laminated member is comprised of at least a polyethylene resin layer 6, a paper substrate layer 1, an aluminum foil layer 3 and a primary processed layer 4, wherein an adhesive agent reinforcing layer is formed at a region where the laminated member is adhered with hot-melt adhesive agent H. The adhesive agent reinforcing layer 7 is formed at the surface of the primary processing layer. The adhesive reinforcing layer 7 is formed at the surface of the primary processing layer. Further, the adhesive agent reinforcing layer is formed by coating ink containing rubber resin in binder. Preferably, the binder contains more than 50% of rubber resin. In addition, this is a conical ice cream packaging member formed by such an ice cream packaging material.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a packaging material for ice cream and a conical ice cream packaging.
More specifically, the present invention relates to a cone-shaped ice cream package formed by overlapping both end portions of a fan-shaped blank plate of an ice cream packaging material to form a seal portion.

[0002]

2. Description of the Related Art Conventionally, various forms of ice cream for individual use, such as a cup type, a monaka type, a stick type, etc., have been developed and proposed. One of them is a cone type ice cream. There is. This cone-shaped ice cream is usually formed in a conical shape by superposing the sealing portions at both ends of a fan-shaped blank plate made of a laminate composed mainly of paper, an aluminum foil on the front surface, and a polyethylene resin on the back surface. And then packed with corn and ice cream. In this conical ice cream package, the contents must be solidified so as not to flow when the contents are frozen and solidified. For that purpose, liquid nitrogen is sprayed.

[0003]

However, in the above-mentioned conical ice cream package, since the liquid nitrogen for freezing and solidifying the ice cream at the time of filling is extremely low in temperature, both end edges of the fan-shaped blank plate are required. There is a problem that a hot melt adhesive used as an adhesive for overlapping the seal portions of the parts causes interfacial delamination and does not have a function of protecting the contents, so that a market defect is easily caused as a serious defect. The problem with the conventional packaging material is that, as shown in FIG. 1, the polyethylene resin layer of the adherend and the aluminum foil layer subjected to the primer treatment are bonded with a hot melt adhesive. One of the reasons is that while the affinity between the polyethylene resin layer and the hot melt adhesive is good, the affinity between the aluminum foil layer and the hot melt adhesive is not good. Another is that the heat shrinkage when cooled is different between the polyethylene resin layer and the aluminum foil layer. The former can be solved by using a resin having a high affinity for aluminum as the tackifier contained in the hot melt adhesive. On the other hand, for the latter, due to the difference in physical properties between the polyethylene resin layer, the resin of the hot melt adhesive and the metal of aluminum foil, the use of a hot melt adhesive having excellent cold resistance necessarily results in a hot melt having a low softening point. The use of an adhesive results in a loss of heat resistance. Originally, hot-melt adhesives have the characteristic that they are bonded by being applied after hot melting and then solidified by cooling, and therefore have poor heat resistance. The operating temperature range of a typical hot melt adhesive is in the range of -20 ° C to 50 ° C. At extremely low temperatures (-20 to -196 ° C), the adhesiveness is lost because the temperature exceeds the glass transition point of the resin. In particular, when used in frozen desserts or frozen foods, a hot melt adhesive having a low softening point is used because it surely exceeds the low-temperature region. However, even in such a case, the limit is about -35 ° C.

[0004] Therefore, the present invention provides an ice cream packaging in which the sealing portion does not undergo interfacial peeling under extremely low temperatures such as liquid nitrogen even when a hot melt adhesive having extremely low cold resistance is used. An object of the present invention is to provide a material and a conical ice cream package using the same.

[0005]

As a result of various studies to solve the above-mentioned problems, the present invention has revealed that the edges of a packaging material comprising a laminate are superimposed and bonded with a hot-melt adhesive, and iced. An ice cream packaging material for filling and packaging a cream, wherein the laminate has at least a polyethylene resin layer, a paper base layer, an aluminum foil layer, and a primer treatment layer, and is bonded with the hot melt adhesive. A packaging material for ice cream, characterized in that an adhesive reinforcing layer is formed in the region to be formed, wherein the adhesive reinforcing layer,
It is characterized in that it is formed on the surface of the primer treatment layer, characterized in that the adhesion reinforcing layer is formed by applying an ink containing a rubber-based resin to a binder, preferably, the binder is a rubber It is characterized by containing 50% or more of the base resin. Further, the present invention provides a fan-shaped blank from a packaging material for ice cream, wherein an adhesive reinforcing layer is formed in a region to be adhered with a hot melt adhesive, Is conical ice cream package characterized in that the edges are overlapped and adhered with a hot melt adhesive to form a cone, and ice cream is filled and packaged.

According to the present invention, even when a hot melt adhesive having extremely low cold resistance is used, a cone having a specification that does not cause interfacial peeling due to adhesion at a seal portion under an extremely low temperature such as liquid nitrogen. A shaped ice cream package can be obtained.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described in detail below. FIGS. 1 and 2 are configuration diagrams illustrating examples of ice cream packaging materials constituting a conical ice cream package according to the present invention. FIG. 3 is formed from the ice cream packaging materials illustrated in FIGS. FIG. 4 is a plan view showing the fan-shaped blank plate, and FIG. 4 is a perspective view showing an example of a conical ice cream package formed from the fan-shaped blank plate shown in FIG. FIG. 5 is a schematic sectional view of a seal portion of a conical ice cream package according to the present invention, and FIG. 6 is a schematic sectional view of a seal portion of a conventional conical ice cream package. FIG. 7 is a perspective view showing an example in which a cone and ice cream are filled and packaged in the conical ice cream package shown in FIG. 4, and FIG. 8 shows an opened state of the conical ice cream package shown in FIG. It is a perspective view.

First, as shown in FIG. 1, the material composition A of the conical ice cream package according to the present invention in a portion other than the sealing portion of the packaging material is, as shown in FIG. An aluminum foil layer 3 having a waterproof property, a moisture-proof property and the like is laminated via an adhesive layer 2 for use, and a primer treatment layer 4 for providing printability on the surface of the aluminum foil layer 3 is provided. On the aluminum foil layer 3 on which the layer 4 is provided, a character, figure, pattern, or other desired pattern printing layer 5 is provided.
Is formed by laminating a polyethylene resin layer 6 on the other surface of the substrate.

The above-mentioned illustration is an example of the material constitution of the ice cream packaging material of the conical ice cream package according to the present invention, and the present invention is not limited thereto, and the paper base material is mainly used. Any material can be used as long as it has an aluminum foil layer on the front surface and a polyethylene resin layer on the back surface. Also,
In the conical ice cream package according to the present invention, although not shown, if necessary, a protective film layer or the like for protecting the pattern printing layer 5 is made of resin as a main component of the vehicle, if necessary. It can also be formed using a composition.

Further, as shown in FIG. 2, the material structure B in the seal portion of the ice cream packaging material of the conical ice cream package according to the present invention is formed on the aluminum foil layer 3 provided with the primer treatment layer 4. Then, instead of providing the pattern printing layer 5, an adhesion reinforcing layer 7 is provided. By providing the adhesive reinforcing layer 7, even when a hot melt adhesive is used, bonding can be performed at an extremely low temperature without causing interface separation due to bonding of the seal portion.

Next, in the present invention, a fan-shaped blank plate C capable of manufacturing a conical ice cream package is manufactured using the ice cream packaging material exemplified above. Using the packaging material for ice cream shown in FIG. 1 and FIG. 2 described above, a character, figure, pattern, or other pattern printing layer 5 is provided on a portion other than the seal portion on the surface in advance, and the seal portion on the surface is provided. Is provided with an adhesion reinforcing layer 7 in the adhesion region. Actually, the picture printing layer 5 and the adhesion reinforcing layer 7 can be provided simultaneously at the time of printing. As shown in FIG. 3, a fan-shaped blank plate C is manufactured by punching out of a packaging material for ice cream using a predetermined fan-shaped cutting blade. Then, after punching out the fan-shaped blank plate C, the adhesive reinforcing layer 7 is formed in a region corresponding to a seal portion at one edge of the surface of the fan-shaped blank plate C.
In addition, in the figure, reference numeral 8 denotes a knob of the opening band G when opening and removing the conical ice cream package, as described later. The body of the conical ice cream package can be opened using the knob 8 as a starting point. In the drawing, reference numerals 9 and 9 denote opening cuts used when the opening band G of the conical ice cream package is peeled off. Although it is not always necessary to provide them, providing the opening cuts 9 makes opening easy. In the above description, it is optional to provide two or more opening cuts 9 at desired intervals depending on the size of the ice cream and the like. Further, in the drawing, reference numeral 10 denotes a sticking portion serving as a sealing portion at the other end of the back surface (polyethylene resin layer) which is superimposed on and bonded to the adhesive layer 7 at one end of the surface of the blank plate C. Represents

Next, in the present invention, the fan-shaped blank plate C shown in FIG. 3 is used, and the adhesive layer 7 on one edge of the front surface and the adhesive portion 10 on the back surface of the other edge are used. While overlapping and tightening in a conical shape, both edges of the overlapped portion are stuck together via a hot melt adhesive to form a seal portion 1.
1 to manufacture a conical ice cream package D capable of filling and packaging cones, ice creams and the like as shown in FIG.

FIG. 5 is a schematic sectional view of the seal portion 11. FIG. 6 is a schematic sectional view of a conventional product. FIG.
As shown in FIG. 1, the aluminum foil layer 3 provided with the primer treatment layer 4 and the polyethylene resin layer 6 are provided with the primer treatment layer 4 on the surface of the aluminum foil layer 3 and the adhesive reinforcement layer 7 provided thereon. It is bonded with a melt adhesive H. In particular, even when a hot-melt adhesive having no cold resistance is used, the affinity between the aluminum provided with the primer-treated layer 4 and the hot-melt adhesive such as an ethylene-vinyl acetate copolymer system is increased. Since the difference in the thermal shrinkage rate is reduced, the specification does not cause peeling at an ultra-low temperature.

Next, in the present invention, the conical ice cream package D manufactured as described above is used, and the cone 11 is first filled from the upper opening of the conical ice cream package D. The cone 12 is filled with ice cream 13 and then the opening is made to face the inner surface of the conical ice cream package D, for example, by heat-sealing the portion to form the upper end sealing portion 14. As shown in FIG. 7, the conical ice cream package E filled with the ice cream according to the present invention is manufactured. In addition, in the figure, the knob part 8, the opening break 9,
9 and the like have the same meaning as described above.

Next, a method of opening the conical ice cream package E manufactured as described above in the present invention will be described. FIG. 8 shows the opened state of the ice cream package E according to the present invention. It is a perspective view. In the present invention, as shown in FIG. 8, first, the conical ice cream package E is peeled off by hand with the upper end seal portion 14 of the conical ice cream package E, and then the knob of the opening band G of the conical ice cream package E is further separated. When the user holds the hand 8 and tears it along the opening cuts 9 and 9 in the girth direction, the opening band G is peeled off, opened and removed, and the ice cream 13 and the cone 12 are removed.
Is exposed. Then, in the present invention, the ice cream 13 exposed as described above is eaten, the cone 12 is further extracted from the remaining portion 15 of the remaining conical ice cream package F, and the remaining ice cream 13 is
It eats with two.

The above illustration is an example of the conical ice cream package according to the present invention, and the present invention is not limited thereto.

Next, in the present invention, the ice cream packaging material constituting the conical ice cream package according to the present invention as described above will be described. First, in the present invention, as the paper base material 1, Since it becomes the basic material constituting the packaging material for ice cream, mechanical, physical, chemical, and other materials having excellent properties can be used, specifically, for example,
Paper base materials such as cup base paper, synthetic paper, imitation paper, tissue paper, clay-coated paper, kraft paper, and various other paperboards and processed papers can be used. Further, in the present invention, a paper base material of about 70 to 500 g / m @ 2 can be used.

Next, an aluminum foil layer 3 is provided on the surface of the paper substrate 1. This aluminum foil layer 3 has water resistance, moisture resistance, etc., and blocks light such as sunlight, water vapor, water,
It has properties such as being impermeable to gas and the like, having a metallic appearance, and having shape retention. The thickness of the aluminum foil may be in the range of 5 to 30 μm.

Next, a primer-treated layer 4 is provided on the surface of the aluminum foil layer 3 in order to impart printability. This primer-treated layer 4 has a surface of the aluminum foil layer 3 on which epoxy / melamine, vinyl chloride / vinyl chloride / vinyl chloride / urethane, polyester / melamine, cellulose / urethane,
It is provided by coating a coating liquid mainly containing a resin such as acrylic / vinyl chloride / vinyl chloride and forming a thin film on the surface of the aluminum foil.

Next, a pattern printing layer 5 and an adhesion reinforcing layer 7 are provided on the surface of the aluminum foil layer 3 provided with the primer treatment layer 4. The pattern printing layer 5 is provided on a portion of the blank plate C excluding the sealing portion at one edge, and may be provided by a general printing method such as gravure printing, offset printing, letterpress printing, screen printing, and the like. Can be provided by a known printing method. As the ink to be used, a packaging ink can be used. For example, a gravure ink made of nitrified cotton, polyamide resin or the like can be used. The adhesive reinforcing layer 7 is provided in an adhesive area corresponding to a seal portion at one edge of the blank plate C. Like the picture print layer 5, it can be provided in a printing step. As the ink to be used, an ink composed of a binder, a coloring material, and a solvent made of a mixture of a rubber-based resin and another resin is applied and dried to form the adhesion reinforcing layer 7. Also,
It is preferable that the binder is composed of a resin component containing at least 50% of a rubber-based resin. Examples of the rubber-based resin include chlorinated rubber, hydrochloric rubber, and cyclized rubber. Examples of other resins include acrylic resins, nitrocellulose resins, polyamide resins, and the like.

Next, in the present invention, as the hot melt adhesive H used for sealing a portion where both end portions of the fan-shaped blank plate C are overlapped, for example, an ethylene-vinyl acetate copolymer (EVA) is used. ), Hot-melt adhesives containing polyacryl, polyolefin, polyester, polyamide, polyurethane, epoxy, rubber, and the like as main components can be used. The coating method can be performed by, for example, a spray gun (spray nozzle), a roll coater (spot coater), or another method.

Next, in the present invention, the polyethylene resin layer 6 has water resistance, humidity resistance, etc., for example, low density polyethylene, medium density polyethylene, high density polyethylene, linear low density polyethylene. Or a resin film or sheet.
The thickness of the resin film is 10 to 300 μm.
m, preferably 15-100 μm.

In the present invention, in addition to the above-mentioned materials, other materials satisfying properties such as chemical resistance, solvent resistance, hygiene resistance, etc. can be optionally used. Specifically, various resin films and the like can be arbitrarily selected according to the packaging purpose, and can be laminated and used.

Next, in the present invention, a method of laminating the above-described materials such as the paper base 1, the aluminum layer 3, and the polyethylene resin layer 6 will be described. Method of laminating the packaging material, for example, wet lamination method, dry lamination method, solventless dry lamination method,
Extrusion lamination method, T die co-extrusion molding method,
It can be performed by a co-extrusion lamination method or the like. When performing the above-mentioned lamination, if necessary, a pretreatment such as a corona treatment or an ozone treatment can be applied to the film. For example, an isocyanate-based (urethane-based), polyethyleneimine-based, or polybutadiene-based ,
Organic titanium-based anchor coating agents, or known anchor coating agents and adhesives such as polyurethane-based, polyacrylic-based, epoxy-based, polyester-based, polyamide-based, polyvinyl acetate-based, and other laminating adhesives. Can be used.

Next, in the present invention, a method of forming a fan-shaped blank plate C from a packaging material for ice cream mainly composed of a paper base is, for example, by setting a fan-shaped punching blade of a predetermined size. Using a punching machine, a fan-shaped blank plate C can be manufactured by punching out a roll-shaped or sheet-shaped ice cream packaging material mainly composed of a paper base.

[0026]

Next, the present invention will be described more specifically with reference to the following examples.

First, clay-coated paper (weighing 81.5 g /
m2) on one side, a 7μ thick aluminum foil with a thickness of 15
The layers were bonded by wet lamination using a polyethylene layer extruded with μ, and then a varnish made of vinyl chloride vinyl chloride / acrylic resin was coated on the surface of the aluminum foil to form a thin film, and a primer-treated layer was provided. On the other hand, a polyethylene layer having a thickness of 20 μm was provided by extrusion on the other surface of the clay-coated paper. Subsequently, a blank F on the surface of the aluminum foil layer provided with the primer treatment layer
A desired pattern, characters, etc. are formed by using a nitrifying cotton-based ink in a portion excluding the seal portion at one edge of the blank F, and a resin of a binder is used as an adhesive reinforcing layer in an adhesive region corresponding to the seal portion at one edge of the blank F. Printing was performed using an ink having a compounding ratio (chlorinated rubber resin: acrylic resin) of 8: 2. Next, a sector-shaped blank plate of a predetermined size is punched out of the laminated body manufactured as described above, and subsequently, an EVA hot melt type adhesive is applied to one edge of the sector-shaped blank plate, and both end edges thereof are formed. The sticking parts of the parts are overlapped and the parts are stuck together via a hot-melt type adhesive to produce a conical ice cream package. Then, ice cream was filled and packaged to produce an ice cream package. The ice cream package produced above, even under ultra-low temperature, the seal portion does not peel off and open, as a result,
There was no leakage of the contents, and the appearance was not impaired.

[0028]

As is apparent from the above description, according to the present invention, a fan-shaped blank plate is formed from a packaging material for ice cream, and both end edges of the fan-shaped blank plate are overlapped with a hot melt adhesive. In the conical ice cream package formed by adhering and forming a cone, an adhesive reinforcing layer is provided in advance in an adhesion region corresponding to the seal portion of the fan-shaped blank plate, so that both end edges of the fan-shaped blank plate are overlapped. The seal portion is adhered using a hot melt adhesive that does not have extreme cold resistance, and formed to form a conical ice cream package, and then into the conical ice cream package. Cone and ice cream are filled and packaged, and under cryogenic temperature such as liquid nitrogen, a cone-shaped ice cream that does not cause interface separation due to adhesion at the seal part The use packaging body is Nevertheless the production Dekiruru.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing an example of the configuration of a portion other than a seal portion of an ice cream packaging material according to the present invention.

FIG. 2 is a cross-sectional view showing an example of a configuration of an adhesion area of a seal portion of the packaging material for ice cream according to the present invention.

FIG. 3 is a development view showing a fan-shaped blank of the ice cream package according to the present invention.

4 is a perspective view showing an example of a conical ice cream package formed from the fan-shaped blank plate shown in FIG.

FIG. 5 is a schematic sectional view of a seal portion of the conical ice cream package according to the present invention.

FIG. 6 is a schematic sectional view of a sealing portion of a conventional conical ice cream package.

7 is a perspective view showing an example in which a cone and ice cream are filled and packed in the conical ice cream package shown in FIG. 4;

FIG. 8 is a perspective view showing an opened state of the conical ice cream package shown in FIG. 7;

[Explanation of symbols]

A Packaging material for ice cream (parts other than the sealed part) B Packaging material for ice cream (sealed part) C Fan-shaped blank plate D Conical ice cream package (before filling) E Conical ice cream package (after filling) F Conical ice cream package (after opening) G Opening band H Hot melt adhesive 1 Paper substrate 2 Laminating adhesive layer 3 Aluminum foil layer 4 Primer treatment layer 5 Picture printing layer 6 Polyethylene resin layer 7 Adhesion reinforcing layer 8 Knob 9 Opening cut 10 Adhesive part at other end 11 Seal part 12 Cone 13 Ice cream 14 Upper seal part 15 Remaining part of ice cream packaging material

 ──────────────────────────────────────────────────続 き Continued on the front page F-term (reference) 3E035 AA17 BA07 BC01 BC02 BC03 CA07 4F100 AB10C AK04A AK15G AK15H AK25G AK25H AN02E AS00D BA05 BA07 BA10A BA10D CB03 CC00 CC00E DB15 DD01 DD11 DG10B EH46E GB15 GBH GBE GBH GB

Claims (5)

[Claims] 1. An ice cream packaging material in which the edges of a packaging material comprising a laminate are overlapped and adhered with a hot melt adhesive, and the ice cream is filled and packaged, wherein the laminate is at least polyethylene. A packaging material for ice cream, comprising: a resin layer, a paper base layer, an aluminum foil layer, and a primer-treated layer, wherein an adhesive reinforcing layer is formed in a region to be bonded with the hot melt adhesive. 2. The packaging material for ice cream according to claim 1, wherein the adhesion reinforcing layer is formed on a surface of the primer treatment layer. 3. The packaging material for ice cream according to claim 1, wherein the adhesion reinforcing layer is formed by applying an ink containing a rubber-based resin to a binder. 4. The method according to claim 1, wherein the binder contains 50% of a rubber-based resin.
4. The packaging material for ice cream according to claim 3, which contains the above. 5. The fan-shaped ice cream packaging material according to claim 1, wherein the edges are overlapped and bonded with a hot melt adhesive to form a cone, and the ice cream is filled. A conical ice cream package characterized by being packaged in a package.