JP2014040285A - Paper cup - Google Patents
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- JP2014040285A JP2014040285A JP2013250939A JP2013250939A JP2014040285A JP 2014040285 A JP2014040285 A JP 2014040285A JP 2013250939 A JP2013250939 A JP 2013250939A JP 2013250939 A JP2013250939 A JP 2013250939A JP 2014040285 A JP2014040285 A JP 2014040285A
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- 229920005989 resin Polymers 0.000 claims abstract description 103
- 239000011347 resin Substances 0.000 claims abstract description 103
- 239000000463 material Substances 0.000 claims abstract description 39
- 239000006229 carbon black Substances 0.000 claims abstract description 31
- 229910052809 inorganic oxide Inorganic materials 0.000 claims description 25
- 239000000758 substrate Substances 0.000 claims description 19
- -1 polyethylene terephthalate Polymers 0.000 claims description 18
- 238000007740 vapor deposition Methods 0.000 claims description 18
- 239000011248 coating agent Substances 0.000 claims description 15
- 230000004888 barrier function Effects 0.000 claims description 13
- 229920000139 polyethylene terephthalate Polymers 0.000 claims description 6
- 239000005020 polyethylene terephthalate Substances 0.000 claims description 6
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 5
- 229910052751 metal Inorganic materials 0.000 claims description 5
- 239000002184 metal Substances 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 4
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims description 4
- 229910052814 silicon oxide Inorganic materials 0.000 claims description 4
- 150000004703 alkoxides Chemical class 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- 239000011259 mixed solution Substances 0.000 claims description 3
- 229920003169 water-soluble polymer Polymers 0.000 claims description 3
- 238000001035 drying Methods 0.000 claims 1
- 235000013305 food Nutrition 0.000 abstract description 13
- 230000000903 blocking effect Effects 0.000 abstract description 4
- 238000010030 laminating Methods 0.000 abstract description 4
- 239000000123 paper Substances 0.000 description 176
- 229910052782 aluminium Inorganic materials 0.000 description 18
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 18
- 238000003475 lamination Methods 0.000 description 15
- 238000001125 extrusion Methods 0.000 description 13
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 12
- 229910052760 oxygen Inorganic materials 0.000 description 12
- 239000001301 oxygen Substances 0.000 description 12
- 239000004698 Polyethylene Substances 0.000 description 11
- 229920000573 polyethylene Polymers 0.000 description 11
- 239000007789 gas Substances 0.000 description 9
- 238000000576 coating method Methods 0.000 description 7
- 230000006866 deterioration Effects 0.000 description 7
- 230000002093 peripheral effect Effects 0.000 description 7
- 239000011888 foil Substances 0.000 description 6
- 230000003647 oxidation Effects 0.000 description 6
- 238000007254 oxidation reaction Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 238000009820 dry lamination Methods 0.000 description 4
- 238000009957 hemming Methods 0.000 description 4
- 230000035699 permeability Effects 0.000 description 4
- 229920005992 thermoplastic resin Polymers 0.000 description 4
- 101100327917 Caenorhabditis elegans chup-1 gene Proteins 0.000 description 3
- 229910010272 inorganic material Inorganic materials 0.000 description 3
- 239000004372 Polyvinyl alcohol Substances 0.000 description 2
- BOTDANWDWHJENH-UHFFFAOYSA-N Tetraethyl orthosilicate Chemical compound CCO[Si](OCC)(OCC)OCC BOTDANWDWHJENH-UHFFFAOYSA-N 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 2
- 235000013361 beverage Nutrition 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
- 150000002484 inorganic compounds Chemical class 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000001590 oxidative effect Effects 0.000 description 2
- 229920005672 polyolefin resin Polymers 0.000 description 2
- 229920002451 polyvinyl alcohol Polymers 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229920000219 Ethylene vinyl alcohol Polymers 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 241000872198 Serjania polyphylla Species 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000004840 adhesive resin Substances 0.000 description 1
- 229920006223 adhesive resin Polymers 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000011147 inorganic material Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 235000008446 instant noodles Nutrition 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 238000010525 oxidative degradation reaction Methods 0.000 description 1
- 239000005022 packaging material Substances 0.000 description 1
- 239000011087 paperboard Substances 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- 239000002341 toxic gas Substances 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
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- Packages (AREA)
- Package Specialized In Special Use (AREA)
Abstract
Description
本発明は、紙カップに関するものである。特に、遮光性を付与した紙カップに関するものである。 The present invention relates to a paper cup. In particular, the present invention relates to a paper cup imparted with light shielding properties.
従来から、紙カップに飲料を充填した飲料カップや、インスタントラーメンを充填したカップが市販されている。このようなカップに充填される内容物によっては、酸化劣化するものがある。この劣化を防止するには、酸素の遮断に加え、酸化劣化のきっかけとなり、更には、酸化劣化を促進する紫外線などの光の遮断が必要である。 Conventionally, beverage cups filled with beverages in paper cups and cups filled with instant noodles are commercially available. Some contents filled in such a cup are subject to oxidative degradation. In order to prevent this deterioration, in addition to blocking oxygen, it becomes a trigger for oxidative deterioration, and further, it is necessary to block light such as ultraviolet rays that promote oxidative deterioration.
このような、酸素の遮断と光の遮断には、アルミニウム箔を含む構成が知られている。しかし、食品等が内容物の場合、金属系の混入物を検査する為、金属探知機による管理が行われており、上記アルミニウム箔を含む構成であると包装材料であるアルミニウム箔が検知されてしまい、正確な検査を行うことが不可能であった。 For such oxygen blocking and light blocking, a configuration including an aluminum foil is known. However, if the food is the contents, it is managed by a metal detector to inspect the metal-based contaminants, and the aluminum foil that is the packaging material is detected if the structure includes the aluminum foil. Therefore, it was impossible to perform an accurate inspection.
また、使用後に焼却処理をする場合、アルミニウムが含まれていることによって焼却炉を傷めたり、有毒ガスが発生したりする等の問題点があった。外観上も、アルミニウムを使用する場合、容器の内側からみると、内層フィルムを透してアルミニウムの色が透けてしまい、容器が着色されて見えてしまう等の視覚的な問題があった。 In addition, when incineration is performed after use, there are problems such as damage to the incinerator and generation of toxic gas due to the inclusion of aluminum. In terms of appearance, when aluminum is used, when viewed from the inside of the container, there is a visual problem that the color of the aluminum is seen through the inner layer film, and the container is colored.
このため、紙カップの紙基材の内面側に、遮光層を設けた紙カップがあった。例えば、ポリオレフィン系樹脂を最外層とする紙基材に、バリアフィルム、遮光層、および遮光層を隠蔽する隠蔽層を有する積層シートを使用した紙カップで、遮光層が、着色樹脂、墨インキのパターン印刷あるいは接着剤により構成され、隠蔽層が、白色のポリオレフィン系樹脂、墨以外のインキによる印刷あるいは紙により形成された紙カップがあった(特許文献1)。 For this reason, there was a paper cup provided with a light shielding layer on the inner surface side of the paper base of the paper cup. For example, a paper cup that uses a laminated sheet having a barrier film, a light shielding layer, and a concealing layer that conceals the light shielding layer on a paper base material having a polyolefin resin as the outermost layer. The light shielding layer is a pattern of colored resin or black ink. There has been a paper cup formed of printing or an adhesive, and the concealing layer is formed by printing with white polyolefin resin, ink other than black, or paper (Patent Document 1).
この場合、遮光層や隠蔽層が、紙カップの胴部貼り合せ部の内側では、内容物に接触してしまう恐れがあり、食品衛生上の問題があった。また、遮光層や隠蔽層をインキでパターン状に設けるには、カップの外面に設ける絵柄印刷との見当を合わせる必要があり、困難であった。 In this case, there is a possibility that the light-shielding layer and the concealing layer may come into contact with the contents inside the body-bonding portion of the paper cup, which causes a problem in food hygiene. In addition, in order to provide the light shielding layer and the concealing layer in a pattern with ink, it is difficult to match the pattern printing with the pattern printing provided on the outer surface of the cup.
また、紙基材にカーボンブラックを混抄して用いることが考えられるが、遮光性を持たせるためには、紙の中にカーボンブラックを0.01から2.0g/m2混ぜて混抄する必要がある。そして、カーボンブラックの混抄紙を用いると、紙カップの胴部貼り合せ部の内側では、内容物にカーボンブラックが接触してしまう恐れがあり、食品が黒ずんでしまい問題がある。 In addition, it is conceivable to use carbon black mixed with a paper base material. However, in order to provide light shielding properties, it is necessary to mix carbon black with 0.01 to 2.0 g / m 2 in the paper. There is. When carbon black mixed paper is used, there is a risk that the carbon black may come into contact with the contents inside the body bonding portion of the paper cup, resulting in a problem of darkening of food.
公知文献を以下に示す。 Known documents are shown below.
本発明は上記のような事情に鑑みてなされたもので、内容物を光から遮断することがで
き、且つ、食品衛生上の問題がない紙カップを提供することを課題としている。
This invention is made | formed in view of the above situations, and makes it a subject to provide the paper cup which can interrupt | block the contents from light and does not have a problem on food hygiene.
本発明は係る課題に鑑みなされたものであり、請求項1の発明は、胴部貼り合わせ部を設けて筒状にした胴部材の下端に、底部材を融着させた紙カップであって、
紙基材にカーボンブラック混抄紙を用い、該紙基材の内面側に熱融着性樹脂層を積層し、前記胴部貼り合せ部の内側になる前記紙基材の端面が露出しないように、保護されていることを特徴とする紙カップである。
The present invention has been made in view of the related problems, and the invention of claim 1 is a paper cup in which a bottom member is fused to a lower end of a cylindrical member provided with a cylindrical bonded portion,
Carbon black mixed paper is used for the paper base material, and a heat-fusible resin layer is laminated on the inner surface side of the paper base material so that the end face of the paper base material that is inside the body part bonding portion is not exposed. The paper cup is characterized by being protected.
本発明の請求項2の発明は、前記紙基材と前記熱融着性樹脂層の間に無機酸化物蒸着フィルムが積層されていることを特徴とする請求項1に記載の紙カップである。 Invention of Claim 2 of this invention is a paper cup of Claim 1 with which the inorganic oxide vapor deposition film is laminated | stacked between the said paper base material and the said heat-fusible resin layer.
本発明の請求項3の発明は、前記無機酸化物蒸着フィルムが、ポリエチレンテレフタレートフィルムに、酸化アルミニウムまたは酸化ケイ素からなる蒸着層が設けられ、該蒸着層の表面に、ガスバリア性被膜が設けられ、該ガスバリア性被膜が、1種以上の金属アルコキシド、あるいは、その加水分解物の少なくともいずれかと、水溶性高分子とを含む水溶液、または、水とアルコールの混合溶液を主剤とするコーティング剤を塗布して、加熱乾燥してなることを特徴とする請求項2に記載の紙カップである。 In the invention of claim 3 of the present invention, the inorganic oxide vapor-deposited film is a polyethylene terephthalate film provided with a vapor-deposited layer made of aluminum oxide or silicon oxide, and a gas barrier coating is provided on the surface of the vapor-deposited layer. The gas barrier film is coated with an aqueous solution containing at least one of one or more metal alkoxides or hydrolysates thereof and a water-soluble polymer, or a mixed solution of water and alcohol. The paper cup according to claim 2, wherein the paper cup is dried by heating.
本発明の請求項4の発明は、前記紙基材の端面の保護が、前記内面側の熱融着性樹脂層が紙基材より延設され、延設された熱融着性樹脂層が外側に折返されて端面を覆うことにより行われていることを特徴とする請求項1から3のいずれか1項に記載の紙カップである。 According to the invention of claim 4 of the present invention, the end surface of the paper base material is protected, the inner surface side heat-fusible resin layer is extended from the paper base material, and the extended heat-fusible resin layer is The paper cup according to any one of claims 1 to 3, wherein the paper cup is folded back to cover an end surface.
本発明の請求項5の発明は、前記紙基材の外面側にも、外面熱融着性樹脂層を設け、前記紙基材の端面の保護が、紙基材の内面側に設けた樹脂層と、外面熱融着性樹脂層とが融着して、前記端面を覆うことにより行われていることを特徴とする請求項1から3のいずれか1項に記載の紙カップである。 The invention of claim 5 of the present invention is a resin in which an outer surface heat-fusible resin layer is provided also on the outer surface side of the paper base material, and the end surface of the paper base material is provided on the inner surface side of the paper base material. The paper cup according to any one of claims 1 to 3, wherein the layer and the outer surface heat-fusible resin layer are fused to cover the end face.
本発明の紙カップは、内容物を光から遮断することができ、内容物の酸化を抑えることができる。また、紙の端面が内容物に触れることがないので、食品衛生上の問題がない。更に、紙基材と熱融着性樹脂層の間に無機酸化物蒸着フィルムを積層することによって、バリア性が付与され、酸素を遮断して酸化を防ぐことができる。 The paper cup of the present invention can block the contents from light and suppress the oxidation of the contents. In addition, since the end face of the paper does not touch the contents, there is no food hygiene problem. Furthermore, by laminating an inorganic oxide vapor-deposited film between the paper substrate and the heat-fusible resin layer, barrier properties are imparted, and oxygen can be blocked to prevent oxidation.
<第1の実施形態>
以下、本発明を実施するための第1の実施形態につき説明する。
図1(a)は、本発明の紙カップの第1の実施形態を模式的に縦断面で示した説明図である。(b)は、(a)のA−A部の横断面を模式的に示した説明図である。
図2は、本発明の紙カップの第1の実施形態の紙基材を模式的に断面で示した説明図である。
図3は、本発明の紙カップの第1の実施形態で胴部貼り合せ部に紙基材より延設された樹脂層を設ける方法を説明する模式図である。
<First Embodiment>
Hereinafter, a first embodiment for carrying out the present invention will be described.
Fig.1 (a) is explanatory drawing which showed typically 1st Embodiment of the paper cup of this invention with the longitudinal cross-section. (B) is explanatory drawing which showed typically the cross section of the AA part of (a).
FIG. 2 is an explanatory view schematically showing in cross section the paper base material of the first embodiment of the paper cup of the present invention.
FIG. 3 is a schematic view for explaining a method of providing a resin layer extended from a paper base material on a body bonding portion in the first embodiment of the paper cup of the present invention.
第1の実施形態の紙カップ100は、図1(a)の縦断面図のように、胴部材101と底部材102から成形されている。胴部材101は、断面が略円錐台形状の筒状になっていて、扇状のブランクの左右両端部を重ね合わせ、融着させて胴部貼り合わせ部103を設け筒状にしている。 A paper cup 100 according to the first embodiment is formed from a body member 101 and a bottom member 102 as shown in a longitudinal sectional view of FIG. The body member 101 has a cylindrical shape with a substantially frustoconical cross section. The left and right end portions of a fan-shaped blank are overlapped and fused to provide a body portion bonding portion 103 to form a cylinder shape.
底部材102は、周縁が下方に折り曲げられて、周縁折り曲げ部104が設けられている。そして、筒状にした胴部材101の下端に、周縁折り曲げ部104を外側にして挿入して、胴部材101の下端部分を内側に折返し、胴部材101で周縁折り曲げ部104を包むようにして、融着させて環状脚部105を設けている。また、胴部材101の上端は外側にカールさせて、トップカール部106が設けられている。 The bottom member 102 has a peripheral edge bent downward and is provided with a peripheral bent portion 104. Then, the lower end portion of the barrel member 101 is inserted into the lower end of the cylindrical body member 101 with the peripheral bent portion 104 outside, the lower end portion of the barrel member 101 is folded inward, and the peripheral bent portion 104 is wrapped by the barrel member 101. An annular leg 105 is provided. A top curl portion 106 is provided by curling the upper end of the body member 101 outward.
胴部材101と底部材102は、紙を主体とする積層体で、紙基材110のカップの内面側になる面に熱融着性樹脂層120が、貼り合わされている。胴部貼り合わせ部103は、図1(b)の横断面図のように、内面側の熱融着性樹脂層120が紙基材110より延設され、延設された熱融着性樹脂層120が外側に折返されて紙基材110の端面を覆って、内容物に触れないように保護している。 The body member 101 and the bottom member 102 are a laminate mainly composed of paper, and a heat-fusible resin layer 120 is bonded to a surface of the paper base 110 that becomes the inner surface side of the cup. As shown in the cross-sectional view of FIG. 1B, the body bonding portion 103 is formed by extending the heat-fusible resin layer 120 on the inner surface side from the paper base 110 and extending the heat-fusible resin. The layer 120 is folded outward to cover the end face of the paper substrate 110 to protect it from touching the contents.
紙基材110は、図2のような、表側層111と中間層112と裏側層113のすくなくとも3層構成の多層紙の板紙で、中間層112にのみカーボンブラックを混抄してあるカーボンブラック混抄紙である。 As shown in FIG. 2, the paper base 110 is a multilayer paper board having at least three layers of a front side layer 111, an intermediate layer 112, and a back side layer 113, and a carbon black mixed paper in which carbon black is mixed only in the intermediate layer 112. Papermaking.
熱融着性樹脂層120は、熱可塑性樹脂であるポリエチレンやポリプロピレンからなっている。ドライラミネーションで、紙基材110に貼り合わせてもよいが、押出しラミネーションで貼り合わせることが好ましい。また、熱可塑性ポリエステルやエチレンビニルアルコール共重合体などを使用することもできる。 The heat-fusible resin layer 120 is made of polyethylene or polypropylene which is a thermoplastic resin. The paper substrate 110 may be bonded by dry lamination, but is preferably bonded by extrusion lamination. Moreover, thermoplastic polyester, ethylene vinyl alcohol copolymer, etc. can also be used.
胴部貼り合せ部103の紙基材110より延設された熱融着性樹脂層120を設けるには、図3のように、胴部材101用の紙基材110の原紙のおもて面に、胴部材101となる位置131に合わせて絵柄印刷を行い、この絵柄に見当を合わせて、熱融着性樹脂層120の延設される位置に貫通孔132を設ける。 In order to provide the heat-fusible resin layer 120 extended from the paper base material 110 of the body bonding portion 103, the front surface of the base paper of the paper base material 110 for the body member 101 as shown in FIG. In addition, pattern printing is performed in accordance with the position 131 to be the body member 101, and the through hole 132 is provided at the position where the heat-fusible resin layer 120 is extended in alignment with the pattern.
この後、紙基材110原紙の裏面に、熱融着性樹脂層120を押し出しラミネーションにより積層する。このとき、この貫通孔132も熱融着性樹脂層120で塞がれる。このように、積層して、延設する熱融着性樹脂層120を残して、胴部材101を打ち抜き、胴部材用のブランクを作成する。 Thereafter, the heat-fusible resin layer 120 is laminated by extrusion lamination on the back surface of the paper base material 110 base paper. At this time, the through hole 132 is also closed with the heat-fusible resin layer 120. In this manner, the trunk member 101 is punched out while leaving the heat-fusible resin layer 120 to be laminated and extended, and a blank for the trunk member is created.
そして、延設された熱融着性樹脂層120を、折り返しておもて面側に加熱圧着させる。これにより、胴部貼り合わせ部103では、紙基材110の端面が熱融着性樹脂層120で覆われ、内容物に触れないように保護される。 Then, the extended heat-fusible resin layer 120 is folded back and heat-pressed on the surface side. Thereby, in the trunk | drum bonding part 103, the end surface of the paper base material 110 is covered with the heat-fusible resin layer 120, and it protects so that a content may not be touched.
この後は、従来のカップ成形と同様に、筒状に巻かれ、底部材102と合わせて環状脚部105を形成し、トップカール部106を設けて、紙カップ100が成形される。 Thereafter, like the conventional cup molding, the paper cup 100 is molded by being wound into a cylindrical shape, forming the annular leg portion 105 together with the bottom member 102, and providing the top curl portion 106.
以上のように、紙カップ100は、紙基材110が中間層112にカーボンブラックを混抄したカーボンブラック混抄紙を用いているので、光を遮断することができ、内容物の酸化が抑えられ、劣化が防止できる。 As described above, since the paper base 100 uses the carbon black mixed paper in which the paper base 110 is mixed with the carbon black in the intermediate layer 112, the paper cup 100 can block light, suppress the oxidation of the contents, and deteriorate. Can be prevented.
また、胴部貼り合せ部103の内側になる紙基材110の端面が熱融着性樹脂層120で覆われて露出していないので、内容物に紙基材110の端面が触れることが無く、カーボンブラックが内容物に触れることが無く、食品衛生上の問題がない。 In addition, since the end surface of the paper base 110 that is inside the body portion bonding portion 103 is not exposed by being covered with the heat-fusible resin layer 120, the end surface of the paper base 110 is not touched by the contents. Carbon black does not touch the contents and there are no food hygiene problems.
<第2の実施形態>
以下、本発明を実施するための第2の実施形態につき説明する。
図4は、本発明の紙カップの第2の実施形態の胴部貼り合せ部の横断面を模式的に示した説明図である。
図5は、本発明の紙カップの第2の実施形態に用いる無機化合物蒸着フィルムを模式的に断面で示した説明図である。
<Second Embodiment>
The second embodiment for carrying out the present invention will be described below.
FIG. 4 is an explanatory view schematically showing a cross section of a body portion bonding portion of the second embodiment of the paper cup of the present invention.
FIG. 5 is an explanatory view schematically showing in cross section an inorganic compound vapor-deposited film used in the second embodiment of the paper cup of the present invention.
第2の実施形態の紙カップ200は、紙カップ100の図1(a)の縦断面図と同様の形状になっている。紙カップ200の縦断面図は省略する。 The paper cup 200 of the second embodiment has the same shape as the longitudinal sectional view of the paper cup 100 in FIG. A longitudinal sectional view of the paper cup 200 is omitted.
胴部材201と底部材は、紙を主体とする積層体で、胴部材101や底部材102と異なり、紙基材210のカップの内面側になる面に、熱融着性樹脂層221、無機酸化物蒸着フィルム222、熱融着性樹脂層223が、順次貼り合わされている。また、紙基材210のカップの外面側になる面に、熱融着性樹脂層224が貼り合わされている。 The body member 201 and the bottom member are laminates mainly made of paper. Unlike the body member 101 and the bottom member 102, the heat-fusible resin layer 221 and the inorganic material are formed on the surface of the paper base 210 that becomes the inner surface side of the cup. The oxide vapor deposition film 222 and the heat-fusible resin layer 223 are sequentially bonded. In addition, the heat-fusible resin layer 224 is bonded to the surface of the paper base 210 that is the outer surface side of the cup.
胴部貼り合わせ部203は、図4のように、内面側の熱融着性樹脂層221、無機酸化物蒸着フィルム222、熱融着性樹脂層223と、外面側の熱融着性樹脂層224が紙基材210より延設され、内面側の熱融着性樹脂層221と外面側の熱融着性樹脂層224とが融着している。この延設され融着している樹脂層が、外側に折返されて紙基材210の端面を覆って、内容物に触れないように保護している。 As shown in FIG. 4, the body bonding portion 203 includes an inner surface-side heat-fusible resin layer 221, an inorganic oxide vapor deposition film 222, a heat-fusible resin layer 223, and an outer-surface-side heat fusible resin layer. 224 is extended from the paper substrate 210, and the heat-fusible resin layer 221 on the inner surface side and the heat-fusible resin layer 224 on the outer surface side are fused. This extended and fused resin layer is folded outward to cover the end surface of the paper base 210 and protect it from touching the contents.
紙基材210は、第1の実施形態の紙基材110と同様なカーボンブラック混抄紙を用いることができる。また、熱融着性樹脂層221、熱融着性樹脂層223と、熱融着性樹脂層224には、第1の実施形態の熱融着性樹脂層120と同様な熱可塑性樹脂を用いることができる。 The paper base 210 can be a carbon black mixed paper similar to the paper base 110 of the first embodiment. Further, for the heat-fusible resin layer 221, the heat-fusible resin layer 223, and the heat-fusible resin layer 224, the same thermoplastic resin as that of the heat-fusible resin layer 120 of the first embodiment is used. be able to.
無機酸化物蒸着フィルム222は、図5のように、蒸着基材231にポリエチレンテレフタレートやナイロンの延伸フィルムを使用し、酸化アルミニウムまたは酸化ケイ素からなる蒸着層232が設けられ、蒸着層232の表面に、ガスバリア性被膜233が設けられたものが好適に用いることが出来る。 As shown in FIG. 5, the inorganic oxide vapor-deposited film 222 uses a polyethylene terephthalate or nylon stretched film as a vapor deposition substrate 231, and is provided with a vapor-deposited layer 232 made of aluminum oxide or silicon oxide. Those provided with the gas barrier coating 233 can be preferably used.
ガスバリア性被膜233は、1種以上の金属アルコキシド、あるいは、その加水分解物の少なくともいずれかと、水溶性高分子とを含む、水溶液、または、水とアルコールの混合溶液を主剤とするコーティング剤を塗布して、加熱乾燥した塗布膜である。 The gas barrier coating 233 is coated with an aqueous solution containing at least one of one or more metal alkoxides or a hydrolyzate thereof, and a water-soluble polymer, or a mixed solution of water and alcohol. Thus, the coating film is dried by heating.
胴部貼り合わせ部203の紙基材210より延設され融着している樹脂層を設けるには、図3と同様に、胴部材201用の紙基材210の原紙のおもて面に、胴部材201となる位置に合わせて絵柄印刷を行い、この絵柄に見当を合わせて、樹脂層の延設される位置に貫通孔を設ける。 In order to provide a resin layer extending and fused from the paper base 210 of the body bonding portion 203, the front surface of the base paper of the paper base 210 for the body member 201 is provided as in FIG. Then, pattern printing is performed in accordance with the position to be the body member 201, and the through hole is provided at the position where the resin layer is extended in alignment with the pattern.
別途、無機酸化物蒸着フィルム222を用意し、無機酸化物蒸着フィルム222の表裏に、それぞれ、熱融着性樹脂層221aと熱融着性樹脂層223を積層した内層フィルムを作成する。 Separately, an inorganic oxide vapor deposition film 222 is prepared, and inner layers films in which a heat fusible resin layer 221a and a heat fusible resin layer 223 are respectively laminated on the front and back of the inorganic oxide vapor deposition film 222 are formed.
貫通孔が設けられた胴部材201用の紙基材210の原紙の裏面にサンドイッチラミネーションにより、押出し製膜された熱融着性樹脂層221bを介して、前述の内層フィルムの熱融着性樹脂層221aの面と積層する。続いて、おもて面に押出しラミネーションにより熱融着性樹脂層224を設ける。 The above-mentioned heat-fusible resin of the inner layer film via the heat-fusible resin layer 221b formed by extrusion lamination on the back surface of the base paper of the paper base 210 for the barrel member 201 provided with the through-hole. Laminated with the surface of the layer 221a. Subsequently, the heat-fusible resin layer 224 is provided on the front surface by extrusion lamination.
これにより、熱融着性樹脂層221bと熱融着性樹脂層221aは融着して一体となり、熱融着性樹脂層221となる。また、貫通孔においては、熱融着性樹脂層221と熱融着性樹脂層224が融着して一体となる。 Thereby, the heat-fusible resin layer 221b and the heat-fusible resin layer 221a are fused and integrated to form the heat-fusible resin layer 221. In the through hole, the heat-fusible resin layer 221 and the heat-fusible resin layer 224 are fused and integrated.
貫通孔における層構成は、紙基材層210が無く、表側から、熱融着性樹脂層224、熱融着性樹脂層221、無機酸化物蒸着フィルム222、熱融着性樹脂層223の順に積層された樹脂層になる。このように、積層して、延設する樹脂層を残して、胴部材201を打ち抜き、胴部材用のブランクを作成する。 The layer structure in the through-hole does not have the paper base layer 210, and from the front side, the heat-fusible resin layer 224, the heat-fusible resin layer 221, the inorganic oxide vapor deposition film 222, and the heat-fusible resin layer 223 are arranged in this order. It becomes a laminated resin layer. In this way, the body member 201 is punched out while leaving the resin layer to be laminated and extended, and a blank for the body member is created.
そして、延設された樹脂層を、折り返しておもて面側に加熱圧着させる。これにより、胴部貼り合わせ部203では、紙基材210の端面が樹脂層で覆われ、内容物に触れないように保護される。この後は、第1の実施形態の紙カップ1と同様にして、紙カップ200が成形される。 Then, the extended resin layer is folded and heat-pressed on the front side. Thereby, in the trunk | drum bonding part 203, the end surface of the paper base material 210 is covered with the resin layer, and it protects so that a content may not be touched. Thereafter, the paper cup 200 is formed in the same manner as the paper cup 1 of the first embodiment.
以上のように、紙カップ200は、紙基材210が中間層にカーボンブラックを混抄したカーボンブラック混抄紙を用いているので、光を遮断することができ、内容物の酸化が抑えられ、劣化が防止できる。 As described above, since the paper base 200 uses carbon black mixed paper in which the paper base 210 is mixed with carbon black in the intermediate layer, the paper cup 200 can block light, suppress oxidation of the contents, and deteriorate. Can be prevented.
また、胴部貼り合せ部203の内側になる紙基材210の端面が樹脂層で覆われて露出していないので、内容物に紙基材210の端面が触れることが無く、カーボンブラックが内容物に触れることが無く、食品衛生上の問題がない。更には、無機酸化物蒸着フィルム222を、胴部材201および底部材に積層しているので、酸素を遮断し、内容物の酸化が防止され、内容物の酸化による劣化が防止できる。 In addition, since the end surface of the paper base 210 that is inside the body bonding portion 203 is covered with the resin layer and is not exposed, the end surface of the paper base 210 does not touch the contents, and the carbon black is the content. There is no problem with food hygiene without touching things. Furthermore, since the inorganic oxide vapor-deposited film 222 is laminated on the body member 201 and the bottom member, oxygen is blocked, the contents are prevented from being oxidized, and deterioration due to the contents can be prevented.
<第3の実施形態>
以下、本発明を実施するための第3の実施形態につき説明する。
図6は、本発明の紙カップの第3の実施形態の胴部貼り合せ部の横断面を模式的に示した説明図である。
<Third Embodiment>
The third embodiment for carrying out the present invention will be described below.
FIG. 6 is an explanatory view schematically showing a cross section of a body bonding portion of the third embodiment of the paper cup of the present invention.
第3の実施形態の紙カップ300は、紙カップ100の図1(a)の縦断面図と同様の形状になっている。紙カップ300の縦断面図は省略する。 The paper cup 300 of the third embodiment has the same shape as the longitudinal sectional view of the paper cup 100 shown in FIG. A longitudinal sectional view of the paper cup 300 is omitted.
胴部材301と底部材は、紙を主体とする積層体で、胴部材101や底部材102と異なり、紙基材310のカップの内面側になる面に、熱融着性樹脂層321が貼り合わされている。また、紙基材310のカップの外面側になる面に、熱融着性樹脂層322が貼り合わされている。 The body member 301 and the bottom member are laminated bodies mainly made of paper. Unlike the body member 101 and the bottom member 102, the heat-fusible resin layer 321 is attached to the inner surface of the cup of the paper base 310. Are combined. In addition, a heat-fusible resin layer 322 is bonded to the surface of the paper base 310 that becomes the outer surface side of the cup.
胴部貼り合わせ部303は、図6のように、内面側の熱融着性樹脂層321と、外面側の熱融着性樹脂層322が紙基材310より延設され、内面側の熱融着性樹脂層321と
外面側の熱融着性樹脂層322とが融着している。そして、反対側の端部の内側に重ねられ、反対側の端部の熱融着性樹脂層321に、胴部貼り合わせ部303内側の端部の熱融着性樹脂層322が融着して、胴部材301を筒状にしている。この延設され融着している樹脂層が、紙基材310の端面を覆って、内容物に触れないように保護している。
As shown in FIG. 6, the body bonding portion 303 includes an inner surface-side heat-fusible resin layer 321 and an outer-surface-side heat-fusible resin layer 322 that extend from the paper substrate 310, so The fusible resin layer 321 and the heat-fusible resin layer 322 on the outer surface side are fused. Then, the heat-sealable resin layer 322 at the end inside the body bonding portion 303 is fused to the heat-sealable resin layer 321 at the end on the opposite side. Thus, the body member 301 is cylindrical. This extended and fused resin layer covers the end surface of the paper base 310 and protects it from touching the contents.
紙基材310は、第1の実施形態の紙基材110と同様なカーボンブラック混抄紙を用いることができる。また、熱融着性樹脂層321と、熱融着性樹脂層322には、第1の実施形態の熱融着性樹脂層120と同様な熱可塑性樹脂を用いることができる。 As the paper base 310, a carbon black mixed paper similar to the paper base 110 of the first embodiment can be used. Further, for the heat-fusible resin layer 321 and the heat-fusible resin layer 322, a thermoplastic resin similar to the heat-fusible resin layer 120 of the first embodiment can be used.
胴部貼り合わせ部303の紙基材310より延設され融着している樹脂層を設けるには、図3と同様に、胴部材301用の紙基材310の原紙のおもて面に、胴部材301となる位置に合わせて絵柄印刷を行い、この絵柄に見当を合わせて、樹脂層の延設される位置に貫通孔を設ける。 In order to provide a resin layer that is extended from the paper base 310 of the body bonding portion 303 and fused, on the front surface of the base paper of the paper base 310 for the body member 301, as in FIG. Then, pattern printing is performed in accordance with the position to be the body member 301, and the through hole is provided at the position where the resin layer is extended in alignment with the pattern.
貫通孔が設けられた胴部材301用の紙基材310の原紙の裏面に押出しラミネーションにより、熱融着性樹脂層321を設け、続いて、おもて面に押出しラミネーションにより熱融着性樹脂層322を設ける。これにより、貫通孔においては、熱融着性樹脂層321と熱融着性樹脂層322が融着して一体となる。 A heat-fusible resin layer 321 is provided by extrusion lamination on the back surface of the base paper of the paper base material 310 for the barrel member 301 provided with the through-hole, and subsequently, heat-fusing resin is provided on the front surface by extrusion lamination. A layer 322 is provided. Thereby, in the through hole, the heat-fusible resin layer 321 and the heat-fusible resin layer 322 are fused and integrated.
貫通孔における層構成は、紙基材層310が無く、表側から、熱融着性樹脂層321と熱融着性樹脂層322が積層された樹脂層になる。このように積層して、延設する樹脂層を残して、胴部材301を打ち抜き、胴部材用のブランクを作成する。 The layer structure in the through hole is the resin layer in which the heat-fusible resin layer 321 and the heat-fusible resin layer 322 are laminated from the front side without the paper base material layer 310. In this way, the body member 301 is punched out while leaving the resin layer to be extended, and a blank for the body member is created.
そして、延設された樹脂層を伸ばしたまま、胴部貼り合わせ部303の内側になる端部を、胴部貼り合わせ部303の外側になる端部の内側に重ね合わせて、加熱圧着させ胴部貼り合わせ部303を形成する。 Then, with the extended resin layer stretched, the end portion that becomes the inner side of the body portion bonding portion 303 is overlapped with the inner side of the end portion that becomes the outer side of the body portion bonding portion 303, and is subjected to thermocompression bonding. A part bonding part 303 is formed.
これにより、胴部貼り合わせ部303では、紙基材310の端面が樹脂層で覆われ、内容物に触れないように保護される。この後は、第1の実施形態の紙カップ1と同様にして、紙カップ300が成形される。 Thereby, in the trunk | drum bonding part 303, the end surface of the paper base material 310 is covered with the resin layer, and it protects so that a content may not be touched. Thereafter, the paper cup 300 is formed in the same manner as the paper cup 1 of the first embodiment.
以上のように、紙カップ300は、紙基材310が中間層にカーボンブラックを混抄したカーボンブラック混抄紙を用いているので、光を遮断することができ、内容物の酸化が抑えられ、劣化が防止できる。 As described above, the paper cup 300 uses the carbon black mixed paper in which the paper base 310 is mixed with carbon black in the intermediate layer, so that the light can be blocked, the oxidation of the contents is suppressed, and the deterioration is prevented. Can be prevented.
また、胴部貼り合せ部303の内側になる紙基材310の端面が樹脂層で覆われて露出していないので、内容物に紙基材310の端面が触れることが無く、カーボンブラックが内容物に触れることが無く、食品衛生上の問題がない。 In addition, since the end surface of the paper base material 310 that is inside the body portion bonding portion 303 is covered with the resin layer and is not exposed, the end surface of the paper base material 310 does not touch the contents, and the carbon black is the content. There is no problem with food hygiene without touching things.
<第4の実施形態>
以下、本発明を実施するための第4の実施形態につき説明する。
図7は、本発明の紙カップの第4の実施形態の胴部貼り合せ部の横断面を模式的に示した説明図である。
<Fourth Embodiment>
The fourth embodiment for carrying out the present invention will be described below.
FIG. 7 is an explanatory view schematically showing a cross section of a body portion bonding portion of a fourth embodiment of the paper cup of the present invention.
第4の実施形態の紙カップ400は、紙カップ100の図1(a)の縦断面図と同様の形状になっている。紙カップ400の縦断面図は省略する。 A paper cup 400 according to the fourth embodiment has the same shape as the longitudinal sectional view of the paper cup 100 shown in FIG. A longitudinal sectional view of the paper cup 400 is omitted.
胴部材401と底部材は、紙を主体とする積層体で、胴部材101や底部材102と異なり、紙基材410のカップの内面側になる面に、無機酸化物蒸着フィルム421と熱融着性樹脂層422が、順次貼り合わされている。 The body member 401 and the bottom member are laminated bodies mainly made of paper. Unlike the body member 101 and the bottom member 102, the body member 401 and the bottom member are thermally fused with the inorganic oxide vapor deposition film 421 on the inner surface of the paper base 410. The adhesive resin layer 422 is sequentially bonded.
胴部貼り合わせ部403は、図7のように、スカイブ・へミング法により断面保護加工され、胴部材401の端面が中に入る内容物の液体などに触れないように保護されている。 As shown in FIG. 7, the body portion bonding portion 403 is protected by a skive hemming method so that the end surface of the body member 401 is not in contact with the liquid of the contents contained therein.
すなわち、胴部貼り合わせ部403において、胴部材401の内側に重なる端部を一定の幅で外面側を厚さがおよそ半分になるように削って、削った幅の半分を外側に折り返して、削り面どうしを重ね合わせて接着し、その重ね合わせ部分を覆うように、胴部材401の外側に重なる端部を融着させている。 That is, in the body bonding portion 403, the end overlapping the inside of the body member 401 is cut to a constant width and the outer surface side to be about half the thickness, and half of the cut width is folded outward. The shaving surfaces are overlapped and bonded, and the end portion overlapping the outside of the body member 401 is fused so as to cover the overlapping portion.
紙基材410は、第1の実施形態の紙基材110と同様なカーボンブラック混抄紙を用いることができ、熱融着性樹脂層422には、第1の実施形態の熱融着性樹脂層120と同様な熱可塑性樹脂を用いることができる。また、無機酸化物蒸着フィルム421は、第2の実施形態に用いた図5の無機酸化物蒸着フィルム222と同様な蒸着フィルムを用いることができる。 The paper base 410 can use the same carbon black mixed paper as the paper base 110 of the first embodiment, and the heat-fusible resin layer 422 has the heat-fusible resin of the first embodiment. A thermoplastic resin similar to that of the layer 120 can be used. Moreover, the vapor deposition film similar to the inorganic oxide vapor deposition film 222 of FIG. 5 used for 2nd Embodiment can be used for the inorganic oxide vapor deposition film 421. FIG.
胴部材401や底部材に用いる積層体を作成するには、まず、無機酸化物蒸着フィルム421に熱融着性樹脂層422を積層する。積層は、熱融着性樹脂層422をフィルムとして、ドライラミネーションによって、無機酸化物蒸着フィルム421に貼り合わせてもよいし、押出しラミネーションによって、熱融着性樹脂層422を溶融押出しして、無機酸化物蒸着フィルム421に積層してもよい。 In order to create a laminate used for the body member 401 and the bottom member, first, the heat-fusible resin layer 422 is laminated on the inorganic oxide vapor-deposited film 421. In the lamination, the heat-fusible resin layer 422 may be bonded to the inorganic oxide vapor-deposited film 421 by dry lamination using the heat-fusible resin layer 422, or the heat-fusible resin layer 422 may be melt-extruded by extrusion lamination to be inorganic. The oxide vapor deposition film 421 may be laminated.
この無機酸化物蒸着フィルム421と熱融着性樹脂層422を積層した内層フィルムの無機酸化物蒸着フィルム421の面を、紙基材410の裏面にドライラミネーションによって積層する。 The surface of the inorganic oxide vapor deposition film 421 of the inner layer film in which the inorganic oxide vapor deposition film 421 and the heat-fusible resin layer 422 are laminated is laminated on the back surface of the paper base 410 by dry lamination.
このように、積層された積層体を、胴部材401や底部材に用いる。胴部材401では、両端部の内側に重なる端部を一定の幅で外面側を厚さがおよそ半分になるように削って、削った幅の半分を外側に折り返して、削り面どうしを重ね合わせて接着し、スカイブ・へミング法により端面保護を行う。 Thus, the laminated body laminated | stacked is used for the trunk | drum member 401 or a bottom member. In the body member 401, the end portion that overlaps the inside of both end portions is cut with a constant width so that the outer surface side is approximately halved, the half of the cut width is folded outward, and the cut surfaces are overlapped. And then end face protection by skive and hemming.
この端面保護を行った積層体を打ち抜き、胴部材用のブランクとし、このスカイブ・へミング法により端面保護を行った端部を、外側に重なる端部の内側に融着させて、筒状の胴部材401とする。この後は、第1の実施形態の紙カップ1と同様にして、紙カップ400が成形される。 The laminated body subjected to the end face protection is punched out to obtain a blank for a body member, and the end part subjected to the end face protection by the skive-hemming method is fused to the inner side of the end part overlapping the outer side, thereby forming a cylindrical shape. The body member 401 is used. Thereafter, the paper cup 400 is formed in the same manner as the paper cup 1 of the first embodiment.
以上のように、紙カップ400は、紙基材410に中間層にカーボンブラックを混抄したカーボンブラック混抄紙を用いているので、光を遮断することができ、内容物の酸化が抑えられ、劣化が防止できる。 As described above, the paper cup 400 uses the carbon black mixed paper in which the carbon black is mixed in the intermediate layer on the paper base 410, so that the light can be blocked, the oxidation of the contents is suppressed, and the deterioration is prevented. Can be prevented.
また、胴部貼り合せ部403の内側になる紙基材410の端面が樹脂層で覆われて露出していないので、内容物に紙基材410の端面が触れることが無く、カーボンブラックが内容物に触れることが無く、食品衛生上の問題がない。更には、無機酸化物蒸着フィルム421を、胴部材401および底部材に積層しているので、酸素を遮断し、内容物の酸化が防止され、内容物の酸化による劣化が防止できる。 In addition, since the end surface of the paper base material 410 that is inside the trunk portion bonding portion 403 is not exposed because it is covered with the resin layer, the end surface of the paper base material 410 does not touch the contents, and the carbon black is the content. There is no problem with food hygiene without touching things. Furthermore, since the inorganic oxide vapor-deposited film 421 is laminated on the body member 401 and the bottom member, oxygen is blocked, the contents are prevented from being oxidized, and deterioration due to the contents can be prevented.
以下に、本発明の具体的実施例について説明する。 Specific examples of the present invention will be described below.
<実施例1>
延伸ポリエチレンテレフタレートフィルムに酸化アルミを蒸着し、その表面に、ポリビニルアルコールと、テトラエトキシシランや、その加水分解物を含む水とアルコールの混合溶液を主剤とするコーティング剤を塗布し、ガスバリア性被膜を設けた無機酸化物蒸着フィルムを用意した。
<Example 1>
Aluminum oxide is vapor-deposited on a stretched polyethylene terephthalate film, and a coating agent mainly composed of a mixture of water and alcohol containing polyvinyl alcohol, tetraethoxysilane, and its hydrolyzate is applied to the surface, and a gas barrier film is formed. The provided inorganic oxide vapor deposition film was prepared.
この無機酸化物蒸着フィルムのガスバリア性被膜面に、アンカーコート剤を塗布して、厚さ15μmのポリエチレンを押出しラミネーションにより積層した。反対側の延伸ポリエチレンテレフタレートフィルム面に、アンカーコート剤を塗布して、厚さ30μmのポリエチレンを押出しラミネーションにより積層し、内層フィルムを得た。尚、アンカーコート剤は、共に三井化学のA−616を用いた。 An anchor coating agent was applied to the gas barrier coating surface of this inorganic oxide vapor-deposited film, and polyethylene having a thickness of 15 μm was laminated by extrusion lamination. An anchor coating agent was applied to the opposite stretched polyethylene terephthalate film surface, and polyethylene having a thickness of 30 μm was laminated by extrusion lamination to obtain an inner layer film. The anchor coating agent used was A-616 from Mitsui Chemicals.
紙基材として、表側層と中間層と裏側層の3層構成の紙で、中間層にのみ、カーボンブラックを、0.05g/m2混抄した混抄紙を用意し、表側面に絵柄印刷を行い、絵柄印刷で見当を合わせて、カップになったときに胴部貼り合せ部の内側になる端部を形成するように貫通孔を設けた。 As the paper substrate, a paper having a three-layer structure of the facing layer and the intermediate layer and the back layer, only in the intermediate layer, carbon black, prepared mixed paper was 0.05 g / m 2混抄, a picture printed on the front side A through hole was provided so as to form an end portion that becomes the inside of the body bonding portion when the cup was formed.
次に、紙基材の表側面に押出しラミネーションにより、厚さ20μmのポリエチレン層を設け、更に、紙基材の裏側面にサンドイッチラミネーションにより、厚さ17μmのポリエチレン層を介して、内層フィルムの15μmのポリエチレンの面に積層し、積層体を得た。 Next, a polyethylene layer having a thickness of 20 μm is provided on the front side surface of the paper substrate by extrusion lamination, and further, 15 μm of the inner layer film is formed by sandwich lamination on the back side surface of the paper substrate through a polyethylene layer having a thickness of 17 μm. The laminate was obtained by laminating on the surface of polyethylene.
次に、この積層体を、絵柄印刷と見当を合わせて、扇型に打ち抜き、胴部貼り合せ部の内側になる端部に、表裏の樹脂層が融着した樹脂部が延設された胴部材を作成した。また、底部材も同様な積層体を用いて、円形の胴部材を作成した。 Next, this laminate is punched into a fan shape in accordance with pattern printing and registration, and a cylinder in which a resin part in which the front and back resin layers are fused is extended to the inner end of the cylinder bonding part. A member was created. Moreover, the bottom member produced the circular trunk | drum member using the same laminated body.
この胴部材の延設された樹脂部を外側に折り返して、胴部材を筒状に巻き、胴部貼り合せ部を設け筒状にし、この筒状の胴部材の下端より、周縁部分を垂下させ折り曲げ部を設けた底部材を差し込み、折り曲げ部を包むように胴部材の下端部分を折り返し、融着させ、環状脚部を形成した。続いて、筒状の胴部材の上端部分を外側にカールさせ、トップカール部を設け、実施例1の紙カップを作成した。 The extended resin part of the barrel member is folded outward, the barrel member is wound into a cylindrical shape, and a barrel bonding portion is provided to form a cylindrical shape. The peripheral portion is suspended from the lower end of the cylindrical barrel member. A bottom member provided with a bent portion was inserted, and the lower end portion of the body member was folded and fused so as to wrap the bent portion, thereby forming an annular leg portion. Then, the upper end part of the cylindrical trunk | drum member was curled outside, the top curl part was provided, and the paper cup of Example 1 was created.
カーボンブラック混抄していないカップ原紙を用いて、内層側にアルミニウム箔を積層した積層体を用いたアルミニウムカップと、この実施例1の紙カップとの遮光性を比較した。その結果、実施例1の紙カップは、アルミニウムカップと同等の遮光性があった。尚、遮光性の比較は、JIS K7361−1の積分球による方法で、全光線透過率を測定して行った。 The light shielding properties of the aluminum cup using the laminated body in which the aluminum foil was laminated on the inner layer side and the paper cup of Example 1 were compared using the base paper of the cup that was not mixed with carbon black. As a result, the paper cup of Example 1 had the same light shielding property as the aluminum cup. The light shielding property was compared by measuring the total light transmittance by a method using an integrating sphere according to JIS K7361-1.
また、実施例1の紙カップとアルミニウムカップのそれぞれのトップカール部にアルミニウム箔を用いた蓋材をシールし、モダンコントロール社製の酸素透過測定器を用いて、1カップ当りの酸素透過率を測定した。その結果、いずれも1カップ当りの酸素透過率が0.01cc/day未満であり、実施例1の紙カップとアルミニウムカップの酸素透過率は、同等であった。 In addition, the top curl portion of each of the paper cup and aluminum cup of Example 1 is sealed with a cover material using aluminum foil, and the oxygen permeation rate per cup is measured using an oxygen permeation measuring instrument manufactured by Modern Control. did. As a result, the oxygen permeability per cup was less than 0.01 cc / day, and the oxygen permeability of the paper cup and the aluminum cup of Example 1 was the same.
この実施例1の紙カップは、内容物と接する胴部貼り合せ部の内側に重なる胴部材の端部が、端面保護されているので、カーボンブラックが内容物に触れることが無く、食品衛生上の問題もない。 In the paper cup of this Example 1, the end of the body member that overlaps the inside of the body bonding part that is in contact with the contents is protected at the end face, so that the carbon black does not touch the contents, and in terms of food hygiene There is no problem.
<実施例2>
紙基材として、表側層と中間層と裏側層の3層構成の紙で、中間層にのみ、カーボンブラックを、0.02g/m2混抄した混抄紙を用意し、表側面に絵柄印刷を行い、絵柄印刷で見当を合わせて、カップになったときに胴部貼り合せ部の内側になる端部を形成するように貫通孔を設けた。
<Example 2>
As the paper substrate, a paper having a three-layer structure of the facing layer and the intermediate layer and the back layer, only in the intermediate layer, carbon black, prepared mixed paper was 0.02 g / m 2混抄, a picture printed on the front side A through hole was provided so as to form an end portion that becomes the inside of the body bonding portion when the cup was formed.
この貫通孔を設けた紙基材の表側面に押出しラミネーションにより、厚さ20μmのポリエチレン層を設け、更に、紙基材の裏側面に押出しラミネーションにより、厚さ30μmのポリエチレン層を設け、積層体を得た。 A laminate having a polyethylene layer with a thickness of 20 μm is provided by extrusion lamination on the front side of the paper substrate provided with the through holes, and a polyethylene layer with a thickness of 30 μm is provided by extrusion lamination on the back side of the paper substrate. Got.
次に、この積層体を、絵柄印刷と見当を合わせて、扇型に打ち抜き、胴部貼り合せ部の内側になる端部に、表側面の厚さ20μmのポリエチレン層と裏側面の厚さ30μmのポリエチレン層が融着した樹脂部が延設された胴部材を作成した。また、底部材も同様な積層体を用いて、円形の胴部材を作成した。 Next, this laminate is punched out into a fan shape in accordance with the pattern printing and registration, and a polyethylene layer having a thickness of 20 μm on the front side and a thickness of 30 μm on the back side are formed on the end which becomes the inside of the body bonding portion. A barrel member was prepared in which a resin part in which the polyethylene layer was fused was extended. Moreover, the bottom member produced the circular trunk | drum member using the same laminated body.
この胴部材を筒状に巻き、胴部材の延設された樹脂部が反対側の端部部分の内側に沿って重なるようにして、胴部貼り合せ部を設け筒状にし、この筒状の胴部材の下端より、周縁部分を垂下させ折り曲げ部を設けた底部材を差し込み、以下、実施例1と同様にして、実施例2の紙カップを作成した。 The body member is wound into a cylindrical shape, and the body portion extending portion of the body member is overlapped along the inner side of the opposite end portion so that a body portion bonding portion is provided to form a tubular shape. From the lower end of the body member, a bottom member having a peripheral portion hanging down and having a bent portion was inserted, and a paper cup of Example 2 was made in the same manner as in Example 1 below.
実施例1で用いたアルミニウムカップと、この実施例2の紙カップとの遮光性を比較した。その結果、実施例2の紙カップも、アルミニウムカップと同等の遮光性があった。 The light shielding properties of the aluminum cup used in Example 1 and the paper cup of Example 2 were compared. As a result, the paper cup of Example 2 also had the same light shielding property as the aluminum cup.
この実施例2の紙カップは、内容物と接する胴部貼り合せ部の内側に重なる胴部材の端部が、端面保護されているので、カーボンブラックが内容物に触れることが無く、食品衛生上の問題もない。 In the paper cup of this Example 2, since the end face of the body member that overlaps the inside of the body bonding portion that is in contact with the contents is protected at the end face, the carbon black does not touch the contents, and in terms of food hygiene There is no problem.
<実施例3>
延伸ポリエチレンテレフタレートフィルムに酸化ケイ素を蒸着し、その表面に、ポリビニルアルコールと、テトラエトキシシランや、その加水分解物を含む水とアルコールの混合溶液を主剤とするコーティング剤を塗布し、ガスバリア性被膜を設けた無機酸化物蒸着フィルムを用意した。
<Example 3>
Silicon oxide is vapor-deposited on a stretched polyethylene terephthalate film, and a coating agent mainly composed of a mixture of water and alcohol containing polyvinyl alcohol, tetraethoxysilane, and its hydrolyzate is applied to the surface, and a gas barrier film is formed. The provided inorganic oxide vapor deposition film was prepared.
この無機酸化物蒸着フィルムのガスバリア性被膜面に、アンカーコート剤を塗布して、厚さ30μmのポリエチレンを押出しラミネーションにより積層し、内層フィルムを得た。尚、アンカーコート剤は、共に三井化学のA−616を用いた。 An anchor coating agent was applied to the gas barrier coating surface of the inorganic oxide vapor-deposited film, and polyethylene having a thickness of 30 μm was laminated by extrusion lamination to obtain an inner layer film. The anchor coating agent used was A-616 from Mitsui Chemicals.
紙基材として、表側層と中間層と裏側層の3層構成の紙で、中間層にのみ、カーボンブラックを、0.05g/m2混抄した混抄紙を用意し、表側面に絵柄印刷を行った。 As the paper substrate, a paper having a three-layer structure of the facing layer and the intermediate layer and the back layer, only in the intermediate layer, carbon black, prepared mixed paper was 0.05 g / m 2混抄, a picture printed on the front side went.
次に、紙基材の裏側面にドライラミネーションにより、内層フィルムの無機酸化物蒸着フィルムの面を積層し、積層体を得た。この積層体をスカイブ・へミングの機械で加工し端面をスカイブ・へミング処理した。
次に、この積層体を、絵柄印刷と見当を合わせて、扇型に打ち抜き、胴部貼り合せ部の内側になる端部がスカイブ・へミング処理された胴部材を作成した。また、底部材も同様な積層体を用いて、円形の胴部材を作成した。
Next, the surface of the inorganic oxide vapor-deposited film of the inner layer film was laminated on the back side surface of the paper substrate by dry lamination to obtain a laminate. This laminate was processed with a skive-hemming machine and the end face was skived-hemmed.
Next, this laminated body was punched into a fan shape in accordance with pattern printing and registration, and a body member in which an end portion which becomes the inside of the body bonding portion was skived and hemmed was created. Moreover, the bottom member produced the circular trunk | drum member using the same laminated body.
この胴部材を筒状に巻き、胴部貼り合せ部を設け筒状にし、この筒状の胴部材の下端より、周縁部分を垂下させ折り曲げ部を設けた底部材を差し込み、以下、実施例1と同様にして、実施例3の紙カップを作成した。 This body member is wound into a cylindrical shape, and a body portion laminating portion is provided to form a cylinder shape. From the lower end of the tubular body member, a peripheral member is suspended and a bottom member provided with a bent portion is inserted. In the same manner, a paper cup of Example 3 was prepared.
実施例1で用いたアルミニウムカップと、この実施例3の紙カップとの遮光性を比較した。その結果、実施例3の紙カップも、アルミニウムカップと同等の遮光性があった。 The light shielding properties of the aluminum cup used in Example 1 and the paper cup of Example 3 were compared. As a result, the paper cup of Example 3 also had the same light shielding properties as the aluminum cup.
また、実施例3の紙カップとアルミニウムカップのそれぞれのトップカール部にアルミニウム箔を用いた蓋材をシールし、モコン社の酸素透過測定器を用いて、1カップ当りの酸素透過率を測定した。その結果、いずれも1カップ当りの酸素透過率が0.01cc/day未満であり、実施例1の紙カップとアルミニウムカップの酸素透過率は、同等であった。 Moreover, the cover material which used aluminum foil was sealed to each top curl part of the paper cup of Example 3, and the oxygen-permeation rate per cup was measured using the oxygen permeation measuring device of Mocon. As a result, the oxygen permeability per cup was less than 0.01 cc / day, and the oxygen permeability of the paper cup and the aluminum cup of Example 1 was the same.
この実施例1の紙カップは、内容物と接する胴部貼り合せ部の内側に重なる胴部材の端部が、端面保護されているので、カーボンブラックが内容物に触れることが無く、食品衛生上の問題もない。 In the paper cup of this Example 1, the end of the body member that overlaps the inside of the body bonding part that is in contact with the contents is protected at the end face, so that the carbon black does not touch the contents, and in terms of food hygiene There is no problem.
100、200、300、400・・・紙カップ
101、201、301、401・・・胴部材
102・・・底部材
103、203、303、403・・・胴部貼り合わせ部
104・・・周縁折り曲げ部
105・・・環状脚部
106・・・トップカール部
110、210、310、401・・・紙基材
120、221、223、224、321、322、422・・・熱融着性樹脂層
111・・・表側層
112・・・中間層
113・・・裏側層
131・・・胴部材となる位置
132・・・貫通孔
222、421・・・無機酸化物蒸着フィルム
231・・・蒸着基材
232・・・蒸着層
233・・・ガスバリア性被膜
100, 200, 300, 400 ... Paper cup 101, 201, 301, 401 ... Body member 102 ... Bottom member 103, 203, 303, 403 ... Body part bonding part 104 ... Bending edge Part 105 ... Ring leg part 106 ... Top curl part 110, 210, 310, 401 ... Paper base material 120, 221, 223, 224, 321, 322, 422 ... Heat-sealable resin layer 111 ... front side layer 112 ... intermediate layer 113 ... back side layer 131 ... position 132 serving as a trunk member ... through holes 222, 421 ... deposited inorganic oxide film 231 ... deposition base Material 232 ... deposition layer 233 ... gas barrier coating
Claims (5)
紙基材にカーボンブラック混抄紙を用い、該紙基材の内面側に熱融着性樹脂層を積層し、前記胴部貼り合せ部の内側になる前記紙基材の端面が露出しないように、保護されていることを特徴とする紙カップ。 A paper cup in which a bottom member is fused to the lower end of a barrel member provided with a barrel bonding portion to form a cylinder,
Carbon black mixed paper is used for the paper base material, and a heat-fusible resin layer is laminated on the inner surface side of the paper base material so that the end face of the paper base material that is inside the body part bonding portion is not exposed. A paper cup, characterized by being protected.
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JP2011025991A (en) * | 2009-07-29 | 2011-02-10 | Toppan Printing Co Ltd | Paper-made cup container with accessory package body |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2016222320A (en) * | 2015-06-02 | 2016-12-28 | 凸版印刷株式会社 | Container made of paper |
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