JP2022002978A - Paper-made container for oil spice-containing instant food - Google Patents
Paper-made container for oil spice-containing instant food Download PDFInfo
- Publication number
- JP2022002978A JP2022002978A JP2020108098A JP2020108098A JP2022002978A JP 2022002978 A JP2022002978 A JP 2022002978A JP 2020108098 A JP2020108098 A JP 2020108098A JP 2020108098 A JP2020108098 A JP 2020108098A JP 2022002978 A JP2022002978 A JP 2022002978A
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- paper
- base material
- layer
- oil
- bottom plate
- Prior art date
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- 230000007613 environmental effect Effects 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 229920001249 ethyl cellulose Chemical class 0.000 description 1
- 235000019325 ethyl cellulose Nutrition 0.000 description 1
- 238000005562 fading Methods 0.000 description 1
- 239000000796 flavoring agent Substances 0.000 description 1
- 235000019634 flavors Nutrition 0.000 description 1
- 239000007850 fluorescent dye Substances 0.000 description 1
- 239000006081 fluorescent whitening agent Substances 0.000 description 1
- 239000004088 foaming agent Substances 0.000 description 1
- 239000003205 fragrance Substances 0.000 description 1
- 235000011187 glycerol Nutrition 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000011487 hemp Substances 0.000 description 1
- MMHWNKSVQDCUDE-UHFFFAOYSA-N hexanedioic acid;terephthalic acid Chemical compound OC(=O)CCCCC(O)=O.OC(=O)C1=CC=C(C(O)=O)C=C1 MMHWNKSVQDCUDE-UHFFFAOYSA-N 0.000 description 1
- 235000019447 hydroxyethyl cellulose Nutrition 0.000 description 1
- 239000011256 inorganic filler Substances 0.000 description 1
- 229910003475 inorganic filler Inorganic materials 0.000 description 1
- 235000008446 instant noodles Nutrition 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 229910052622 kaolinite Inorganic materials 0.000 description 1
- 150000002576 ketones Chemical class 0.000 description 1
- 150000003951 lactams Chemical class 0.000 description 1
- 239000004816 latex Substances 0.000 description 1
- 229920000126 latex Polymers 0.000 description 1
- 239000000944 linseed oil Substances 0.000 description 1
- 235000021388 linseed oil Nutrition 0.000 description 1
- HCWCAKKEBCNQJP-UHFFFAOYSA-N magnesium orthosilicate Chemical compound [Mg+2].[Mg+2].[O-][Si]([O-])([O-])[O-] HCWCAKKEBCNQJP-UHFFFAOYSA-N 0.000 description 1
- 239000000391 magnesium silicate Substances 0.000 description 1
- 229910052919 magnesium silicate Inorganic materials 0.000 description 1
- 235000019792 magnesium silicate Nutrition 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 description 1
- 229920000609 methyl cellulose Chemical class 0.000 description 1
- 239000001923 methylcellulose Chemical class 0.000 description 1
- 235000010981 methylcellulose Nutrition 0.000 description 1
- 239000010445 mica Substances 0.000 description 1
- 229910052618 mica group Inorganic materials 0.000 description 1
- 235000019426 modified starch Nutrition 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 239000002121 nanofiber Substances 0.000 description 1
- 229920006284 nylon film Polymers 0.000 description 1
- 239000004006 olive oil Substances 0.000 description 1
- 235000008390 olive oil Nutrition 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000012766 organic filler Substances 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 239000003002 pH adjusting agent Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000000312 peanut oil Substances 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 229920001568 phenolic resin Polymers 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 229920003207 poly(ethylene-2,6-naphthalate) Polymers 0.000 description 1
- 229920001495 poly(sodium acrylate) polymer Polymers 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920001748 polybutylene Polymers 0.000 description 1
- 229920000903 polyhydroxyalkanoate Polymers 0.000 description 1
- 229920000306 polymethylpentene Polymers 0.000 description 1
- 239000011116 polymethylpentene Substances 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 229920006324 polyoxymethylene Polymers 0.000 description 1
- 229920005990 polystyrene resin Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 235000015277 pork Nutrition 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000001397 quillaja saponaria molina bark Substances 0.000 description 1
- 239000005871 repellent Substances 0.000 description 1
- 230000002940 repellent Effects 0.000 description 1
- 238000012552 review Methods 0.000 description 1
- 239000005060 rubber Substances 0.000 description 1
- 229930182490 saponin Natural products 0.000 description 1
- 150000007949 saponins Chemical class 0.000 description 1
- 239000008159 sesame oil Substances 0.000 description 1
- 235000011803 sesame oil Nutrition 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 229910052814 silicon oxide Inorganic materials 0.000 description 1
- 229920002050 silicone resin Polymers 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 229910021647 smectite Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- NNMHYFLPFNGQFZ-UHFFFAOYSA-M sodium polyacrylate Chemical compound [Na+].[O-]C(=O)C=C NNMHYFLPFNGQFZ-UHFFFAOYSA-M 0.000 description 1
- 239000003549 soybean oil Substances 0.000 description 1
- 235000012424 soybean oil Nutrition 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 150000003432 sterols Chemical class 0.000 description 1
- 235000003702 sterols Nutrition 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 239000010902 straw Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002600 sunflower oil Substances 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 235000007586 terpenes Nutrition 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- 239000002562 thickening agent Substances 0.000 description 1
- 150000003609 titanium compounds Chemical class 0.000 description 1
- KHPCPRHQVVSZAH-UHFFFAOYSA-N trans-cinnamyl beta-D-glucopyranoside Natural products OC1C(O)C(O)C(CO)OC1OCC=CC1=CC=CC=C1 KHPCPRHQVVSZAH-UHFFFAOYSA-N 0.000 description 1
- 235000015112 vegetable and seed oil Nutrition 0.000 description 1
- 239000008158 vegetable oil Substances 0.000 description 1
- 235000013311 vegetables Nutrition 0.000 description 1
- 239000010455 vermiculite Substances 0.000 description 1
- 229910052902 vermiculite Inorganic materials 0.000 description 1
- 235000019354 vermiculite Nutrition 0.000 description 1
- 239000010457 zeolite Substances 0.000 description 1
- 239000011667 zinc carbonate Substances 0.000 description 1
- 229910000010 zinc carbonate Inorganic materials 0.000 description 1
- 235000004416 zinc carbonate Nutrition 0.000 description 1
- UGZADUVQMDAIAO-UHFFFAOYSA-L zinc hydroxide Chemical compound [OH-].[OH-].[Zn+2] UGZADUVQMDAIAO-UHFFFAOYSA-L 0.000 description 1
- 229940007718 zinc hydroxide Drugs 0.000 description 1
- 229910021511 zinc hydroxide Inorganic materials 0.000 description 1
- 229910052984 zinc sulfide Inorganic materials 0.000 description 1
- DRDVZXDWVBGGMH-UHFFFAOYSA-N zinc;sulfide Chemical compound [S-2].[Zn+2] DRDVZXDWVBGGMH-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D5/00—Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper
- B65D5/02—Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper by folding or erecting a single blank to form a tubular body with or without subsequent folding operations, or the addition of separate elements, to close the ends of the body
- B65D5/12—Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper by folding or erecting a single blank to form a tubular body with or without subsequent folding operations, or the addition of separate elements, to close the ends of the body with end closures formed separately from tubular body
- B65D5/14—Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper by folding or erecting a single blank to form a tubular body with or without subsequent folding operations, or the addition of separate elements, to close the ends of the body with end closures formed separately from tubular body with inset end closures
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D65/00—Wrappers or flexible covers; Packaging materials of special type or form
- B65D65/38—Packaging materials of special type or form
- B65D65/42—Applications of coated or impregnated materials
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Wrappers (AREA)
- Packages (AREA)
- Laminated Bodies (AREA)
Abstract
Description
本発明は、油香辛料を含有する即席食品に用いる紙製容器に関する。 The present invention relates to a paper container used for instant foods containing oil and spices.
カップ入り即席ラーメン用容器などでは、一般的に断熱性容器が使用されている。このような用途に使用される断熱性容器としては、発泡ポリスチレン（ＥＰＳ）製のものが知られている。ＥＰＳ製の断熱性容器は、ポリスチレンに発泡剤を加えた原料をモールド内に注型し、原料に熱と圧力を加えて発泡、成形させることにより製造される。このようにして得られたＥＰＳ製断熱性容器は、容器全体を発泡させているため、断熱性の点では非常に優れている。しかし、石油資源の節約という観点から、その使用の見直しが求められている。 Insulating containers are generally used for instant noodle containers containing cups. As a heat insulating container used for such an application, one made of expanded polystyrene (EPS) is known. A heat insulating container made of EPS is manufactured by casting a raw material in which a foaming agent is added to polystyrene into a mold, and applying heat and pressure to the raw material to foam and mold the raw material. The EPS heat-insulating container thus obtained is extremely excellent in heat-insulating properties because the entire container is foamed. However, from the viewpoint of saving petroleum resources, it is required to review its use.
石油資源由来である発泡ポリスチレンに代えて、バイオマス由来である紙を用いた紙製容器が普及し始めている。一般的な紙製容器は、胴部材と底板部材とがポリオレフィン系のヒートシール層を有し、胴部材と底板部材とはヒートシールにより固着されている。また、即席食品用紙製容器として、特許文献１には、容器胴部材及び底板部材からなる紙製容器において、容器胴部材の外壁面に低融点の熱可塑性合成樹脂フィルムをラミネートして加熱することにより、基材である紙に含まれている水分の蒸気圧を利用してフィルムを凹凸に発泡させた発泡断熱層を有する断熱性紙製容器が開示されている。さらに、特許文献２には、胴部材の一方の壁面に、紙の表面側から低融点の熱可塑性樹脂の発泡内層とこれよりも高い融点を有する熱可塑性樹脂の非発泡外層とからなる２層構造断熱膜が被着されている紙製容器が開示されている。 Paper containers using paper derived from biomass have begun to spread in place of expanded polystyrene derived from petroleum resources. In a general paper container, the body member and the bottom plate member have a polyolefin-based heat seal layer, and the body member and the bottom plate member are fixed by the heat seal. Further, as an instant food paper container, Patent Document 1 describes that in a paper container composed of a container body member and a bottom plate member, a low melting point thermoplastic synthetic resin film is laminated on the outer wall surface of the container body member and heated. Discloses a heat-insulating paper container having a foamed heat-insulating layer in which a film is foamed unevenly by utilizing the vapor pressure of water contained in paper as a base material. Further, in Patent Document 2, two layers are provided on one wall surface of the body member, from the surface side of the paper, composed of a foamed inner layer of a thermoplastic resin having a low melting point and a non-foamed outer layer of a thermoplastic resin having a melting point higher than this. A paper container coated with a structural heat insulating film is disclosed.
ここで、即席食品には、その風味を向上させるため、または、飲食者の嗜好に合わせて辛味等を付与するために、食用油脂と香辛料が混ざり合わさった調味料（以下、「油香辛料」とも言う。）が用いられている場合がある。そして、食用油脂は、ポリエチレンやポリプロピレンなどのポリオレフィン樹脂に馴染みやすい。そのため、ヒートシールされた紙製容器に油香辛料を含有する即席食品を収容すると、油香辛料がポリオレフィン樹脂に浸透し、紙製容器の外側からでも確認できるほどの着色や香り漏れ（以下「染み出し」とも言う。）が生じる場合がある。
この染み出しを防ぐために、基紙より内面側に油脂が馴染みにくいＰＥＴフィルム等を積層した胴部材、底板部材を用いることが行われているが、バイオマス由来の紙製容器に、石油資源由来のＰＥＴフィルム等を用いることは、環境負荷低減効果を損ねてしまうという課題があった。
Here, in order to improve the flavor of instant foods or to add spices according to the tastes of food and drink, a seasoning in which edible oils and fats and spices are mixed (hereinafter, also referred to as "oil spices"). Say.) May be used. The edible oils and fats are easily compatible with polyolefin resins such as polyethylene and polypropylene. Therefore, when instant foods containing oil spices are stored in a heat-sealed paper container, the oil spices permeate the polyolefin resin, causing coloring and fragrance leakage that can be confirmed even from the outside of the paper container (hereinafter referred to as "bleeding out"). Also called.) May occur.
In order to prevent this oozing out, it is used to use a body member and a bottom plate member in which a PET film or the like, which is difficult for oils and fats to blend in, is laminated on the inner surface side of the base paper. The use of PET film or the like has a problem of impairing the effect of reducing the environmental load.
本発明は、油香辛料の染み出しを防止することのできる油香辛料含有即席食品用紙製容器を提供することを課題とする。 An object of the present invention is to provide an instant food paper container containing oil spices, which can prevent the oil spices from seeping out.
本発明の課題を解決するための手段は、以下の通りである。
１．胴部材と底板部材とからなる油香辛料含有即席食品用紙製容器であって、
前記胴部材が、外面側から紙基材、液体不浸透層を備え、
前記底板部材が、外面側から紙製バリア基材、液体不浸透層を備え、
前記底板部材が備える前記紙製バリア基材が、紙基材上に、無機顔料及びバインダー樹脂を含有する目止め層と、無機顔料及びポリビニルアルコール系樹脂を含有するガスバリア層とをこの順に有し、
前記ガスバリア層上に前記液体不浸透層を有することを特徴とする油香辛料含有即席食品用紙製容器。
２．胴部材と底板部材とからなる油香辛料含有即席食品用紙製容器であって、
前記胴部材が、外面側から紙製バリア基材、液体不浸透層を備え、
前記底板部材が、外面側から紙製バリア基材、液体不浸透層を備え、
前記胴部材及び底板部材が備える前記紙製バリア基材が、紙基材上に、無機顔料及びバインダー樹脂を含有する目止め層と、無機顔料及びポリビニルアルコール系樹脂を含有するガスバリア層とをこの順に有し、
前記ガスバリア層上に前記液体不浸透層を有することを特徴とする油香辛料含有即席食品用紙製容器。
３．前記ガスバリア層が、更にポリエチレンイミン、有機チタン系化合物、ポリブタジエン系化合物から選択される少なくとも１種を含有することを特徴とする１．または２．に記載の油香辛料含有即席食品用紙製容器。
The means for solving the problem of the present invention is as follows.
1. 1. An instant food paper container containing oil and spices consisting of a body member and a bottom plate member.
The body member includes a paper base material and a liquid impermeable layer from the outer surface side.
The bottom plate member includes a paper barrier base material and a liquid impermeable layer from the outer surface side.
The paper barrier base material included in the bottom plate member has a sealing layer containing an inorganic pigment and a binder resin and a gas barrier layer containing an inorganic pigment and a polyvinyl alcohol-based resin on the paper base material in this order. ,
An oil-spicy-containing instant food paper container having the liquid impermeable layer on the gas barrier layer.
2. 2. An instant food paper container containing oil and spices consisting of a body member and a bottom plate member.
The body member includes a paper barrier base material and a liquid impermeable layer from the outer surface side.
The bottom plate member includes a paper barrier base material and a liquid impermeable layer from the outer surface side.
The paper barrier base material included in the body member and the bottom plate member has a sealing layer containing an inorganic pigment and a binder resin and a gas barrier layer containing an inorganic pigment and a polyvinyl alcohol-based resin on the paper base material. Have in order,
An oil-spicy-containing instant food paper container having the liquid impermeable layer on the gas barrier layer.
3. 3. 1. The gas barrier layer further contains at least one selected from polyethyleneimine, an organic titanium-based compound, and a polybutadiene-based compound. Or 2. Instant food paper container containing oil and spices as described in.
本発明の油香辛料含有即席食品用紙製容器は、底板部材が、または胴部材と底板部材とが、耐油性に優れており、巻締部からの油の染み出しも防止することができる。 In the container made of instant food paper containing oil and spices of the present invention, the bottom plate member, or the body member and the bottom plate member have excellent oil resistance, and it is possible to prevent oil from seeping out from the winding portion.
本発明は、油香辛料を含有する即席食品に用いられる紙製容器に関する。
・油香辛料
本発明における油香辛料とは、食用油脂と香辛料が混ざり合わさった調味料を指し、必要に応じて乳化剤を含有してもよい。
食用油脂としては、食用に適した油脂を指し、具体的には、パーム油、ヤシ油、大豆油、菜種油（キャノーラ油）、米油、コーン油、オリーブ油、白絞油、ひまわり油、アマニ油、ピーナッツ油、サフラワー油（紅花油）、ごま油等の植物性油脂、豚脂、牛脂、鶏油等の動物性油脂、ショートニング等の加工油脂などが挙げられる。また、これらを混合して用いてもよい。
香辛料とは、カレー粉、ウコン、唐辛子、胡椒等の香辛料それ自体に加え、カロチノイド系色素やメイラード色素等の香辛料から単離される色素、並びに香気成分を含むものである。特に、油溶性のカロチノイド系色素（パプリカ・マリーゴールド・トウガラシ色素など）は染み出しやすく、容器外観を顕著に悪化させるため、本発明の油香辛料含有即席食品用紙製容器を用いるメリットが大きい。
The present invention relates to a paper container used for instant foods containing oil and spices.
-Oil spices The oil spices in the present invention refer to seasonings in which edible oils and fats and spices are mixed, and may contain emulsifiers if necessary.
Edible oils and fats refer to edible oils and fats, specifically palm oil, palm oil, soybean oil, rapeseed oil (canola oil), rice oil, corn oil, olive oil, white squeezed oil, sunflower oil, and flaxseed oil. , Peanut oil, saflower oil (red flower oil), vegetable oil such as sesame oil, animal oil such as pork fat, beef oil, chicken oil, processed oil such as shortening and the like. Further, these may be mixed and used.
The spice contains not only the spice itself such as curry powder, curcuma longa, chili pepper, and pepper, but also a pigment isolated from the spice such as a carotenoid pigment and a mailard pigment, and an aroma component. In particular, oil-soluble carotenoid pigments (paprika, marigold, capsicum pigment, etc.) easily exude and significantly deteriorate the appearance of the container. Therefore, there is a great merit in using the oil-spices-containing instant food paper container of the present invention.
食用油脂と香辛料とを混合する際には乳化剤を配合することが好ましい。乳化剤を配合することにより、食用油脂への香辛料の分散性、混和性が向上し、色むらのない状態にすることができる。
乳化剤としては、例えばプロピレングリコール脂肪酸エステル、グリセリン脂肪酸エステル、ソルビタン脂肪酸エステル、ステアロイル乳酸カルシウム、酵素処理ダイズサポニン、酵素処理レシチン、酵素分解レシチン、植物性ステロール、植物レシチン等が挙げられ、特に脂肪酸エステルを使用することが好ましい。
When mixing edible oils and fats with spices, it is preferable to add an emulsifier. By blending an emulsifier, the dispersibility and miscibility of spices in edible oils and fats are improved, and it is possible to obtain a state without color unevenness.
Examples of the emulsifier include propylene glycol fatty acid ester, glycerin fatty acid ester, sorbitan fatty acid ester, stearoyl lactate calcium, enzyme-treated soybean saponin, enzyme-treated lecithin, enzymatically decomposed lecithin, vegetable sterol, plant lecithin and the like. It is preferable to use it.
油香辛料は、香辛料が溶け込んだ食用油脂でもよく、香辛料と食用油脂が後発的に接触したものでもよい。香辛料が溶け込んだ食用油脂は、粉末スープ、液体スープ等の形態で、即席食品に用いられる。また、ラー油、マー油、ネギ油、山椒油等、飲食者の嗜好に応じて後から追加することもできる。香辛料と食用油脂が後発的に接触したものとは、例えば、食用油脂を含む麺塊（フライ麺）に、香辛料を含む粉末調味料をまぶしたものが挙げられる。後発的に香辛料と食用油脂とが接触する場合であっても、長時間静置することで香辛料が食用油脂に溶け込むため、油香辛料に該当する。 The oil and spice may be an edible oil or fat in which the spice is dissolved, or may be a spice and the edible oil or fat that come into contact with each other afterwards. Edible oils and fats in which spices are dissolved are used in instant foods in the form of powdered soups, liquid soups and the like. Further, chili oil, mar oil, green onion oil, Japanese pepper oil, etc. can be added later according to the taste of the food and drink. Examples of the subsequent contact between the spice and the edible oil / fat include a noodle mass (fried noodle) containing the edible oil / fat sprinkled with a powder seasoning containing the spice. Even when the spice and the edible oil / fat come into contact with each other afterwards, the spice dissolves in the edible oil / fat after being left to stand for a long time, so that the spice is classified as an oil / spice.
・油香辛料含有即席食品用紙製容器
本発明の第一の油香辛料含有即席食品用紙製容器は、
胴部材と底板部材とからなる油香辛料含有即席食品用紙製容器であって、
前記胴部材が、外面側から紙基材、液体不浸透層を備え、
前記底板部材が、外面側から紙製バリア基材、液体不浸透層を備え、
前記底板部材が備える前記紙製バリア基材が、紙基材上に、無機顔料及びバインダー樹脂を含有する目止め層と、無機顔料及びポリビニルアルコール系樹脂を含有するガスバリア層とをこの順に有し、
前記ガスバリア層上に前記液体不浸透層を有することを特徴とする。
-Instant food paper container containing oil and spices The first container made of instant food paper containing oil and spices of the present invention is
An instant food paper container containing oil and spices consisting of a body member and a bottom plate member.
The body member includes a paper base material and a liquid impermeable layer from the outer surface side.
The bottom plate member includes a paper barrier base material and a liquid impermeable layer from the outer surface side.
The paper barrier base material included in the bottom plate member has a sealing layer containing an inorganic pigment and a binder resin and a gas barrier layer containing an inorganic pigment and a polyvinyl alcohol-based resin on the paper base material in this order. ,
It is characterized by having the liquid impermeable layer on the gas barrier layer.
本発明の第二の油香辛料即席食品用紙製容器は、
胴部材と底板部材とからなる油香辛料含有即席食品用紙製容器であって、
前記胴部材が、外面側から紙製バリア基材、液体不浸透層を備え、
前記底板部材が、外面側から紙製バリア基材、液体不浸透層を備え、
前記胴部材及び底板部材が備える前記紙製バリア基材が、紙基材上に、無機顔料及びバインダー樹脂を含有する目止め層と、無機顔料及びポリビニルアルコール系樹脂を含有するガスバリア層とをこの順に有し、
前記ガスバリア層上に前記液体不浸透層を有することを特徴とする。
The second oil and spice instant food paper container of the present invention is
An instant food paper container containing oil and spices consisting of a body member and a bottom plate member.
The body member includes a paper barrier base material and a liquid impermeable layer from the outer surface side.
The bottom plate member includes a paper barrier base material and a liquid impermeable layer from the outer surface side.
The paper barrier base material included in the body member and the bottom plate member has a sealing layer containing an inorganic pigment and a binder resin and a gas barrier layer containing an inorganic pigment and a polyvinyl alcohol-based resin on the paper base material. Have in order,
It is characterized by having the liquid impermeable layer on the gas barrier layer.
以下、第一、第二の油香辛料即席食品用紙製容器を、それぞれ第一の紙製容器、第二の紙製容器ともいい、第一の紙製容器と第二の紙製容器をまとめて本発明の紙製容器ともいう。 Hereinafter, the first and second oil and spices instant food paper containers are also referred to as the first paper container and the second paper container, respectively, and the first paper container and the second paper container are collectively referred to. Also referred to as a paper container of the present invention.
・紙基材
紙基材は、パルプ、填料、各種助剤等を含む紙料を抄紙して得られる。
パルプとしては、針葉樹の晒クラフトパルプ（ＮＢＫＰ）、針葉樹の未晒クラフトパルプ（ＮＵＫＰ）、広葉樹の晒クラフトパルプ（ＬＢＫＰ）、広葉樹の未晒クラフトパルプ（ＬＵＫＰ）、サルファイトパルプ（ＳＰ）等の木材の化学パルプ、グランドパルプ（ＧＰ）、リファイナグランドパルプ（ＲＧＰ）、ストーングランドパルプ（ＳＧＰ）、ケミグランドパルプ（ＣＧＰ）、セミケミカルパルプ（ＳＣＰ）、サーモメカニカルパルプ（ＴＭＰ）、ケミサーモメカニカルパルプ（ＣＴＭＰ）等の木材の機械パルプ、ケナフ、バガス、竹、麻、ワラなどから得られた非木材パルプなど、公知のパルプを適宜配合して用いることが可能である。これらの中で、異物混入が発生し難いＬＢＫＰ、ＮＢＫＰ等の化学パルプが好ましい。具体的には、パルプに対する化学パルプの配合率が８０％以上であることが好ましく、１００％であることが特に好ましい。
-Paper base material The paper base material is obtained by papermaking a paper material containing pulp, a filler, various auxiliaries and the like.
Examples of the pulp include bleached kraft pulp of coniferous tree (NBKP), unbleached kraft pulp of coniferous tree (NUKP), bleached kraft pulp of broadleaf tree (LBKP), unbleached kraft pulp of broadleaf tree (LUKP), sulfide pulp (SP) and the like. Wood chemical pulp, ground pulp (GP), refiner ground pulp (RGP), stone ground pulp (SGP), chemi-grand pulp (CGP), semi-chemical pulp (SCP), thermomechanical pulp (TMP), chemi-thermomechanical Known pulp such as mechanical pulp of wood such as pulp (CTMP) and non-wood pulp obtained from Kenaf, Bagus, bamboo, hemp, straw and the like can be appropriately blended and used. Among these, chemical pulps such as LBKP and NBKP, which are less likely to be mixed with foreign substances, are preferable. Specifically, the mixing ratio of the chemical pulp with respect to the pulp is preferably 80% or more, and particularly preferably 100%.
填料としては、タルク、カオリン、焼成カオリン、クレー、重質炭酸カルシウム、軽質炭酸カルシウム、ホワイトカーボン、ゼオライト、炭酸マグネシウム、炭酸バリウム、二酸化チタン、酸化亜鉛、酸化珪素、非晶質シリカ、水酸化アルミニウム、水酸化カルシウム、水酸化マグネシウム、水酸化亜鉛、硫酸バリウム、硫酸カルシウムなどの無機填料、尿素−ホルマリン樹脂、ポリスチレン樹脂、フェノール系樹脂、微小中空粒子等の有機填料等の公知の填料を使用することができる。なお、填料は、必須材料ではなく、使用しなくてもよい。 Fillers include talc, kaolin, calcined kaolin, clay, heavy calcium carbonate, light calcium carbonate, white carbon, zeolite, magnesium carbonate, barium carbonate, titanium dioxide, zinc oxide, silicon oxide, amorphous silica, aluminum hydroxide. , Inorganic fillers such as calcium hydroxide, magnesium hydroxide, zinc hydroxide, barium sulfate, calcium sulfate, and organic fillers such as urea-formalin resin, polystyrene resin, phenolic resin, and fine hollow particles are used. be able to. The filler is not an essential material and may not be used.
各種助剤としては、ロジン、アルキルケテンダイマー（ＡＫＤ）、アルケニルコハク酸無水物（ＡＳＡ）などのサイズ剤、ポリアクリルアミド系高分子、ポリビニルアルコール系高分子、カチオン化澱粉、各種変性澱粉、尿素・ホルマリン樹脂、メラミン・ホルマリン樹脂などの乾燥紙力増強剤、湿潤紙力増強剤、歩留剤、濾水性向上剤、凝結剤、硫酸バンド、嵩高剤、染料、蛍光増白剤、ｐＨ調整剤、消泡剤、紫外線防止剤、退色防止剤、ピッチコントロール剤、スライムコントロール剤等が例示可能であり、必要に応じて適宜選択して使用可能である。 Examples of various auxiliaries include rosin, alkyl keten dimer (AKD), alkenyl succinic acid anhydride (ASA) and other sizing agents, polyacrylamide-based polymers, polyvinyl alcohol-based polymers, cationized starch, various modified starches, urea and other agents. Dry paper strength enhancer such as formalin resin, melamine / formalin resin, wet paper strength enhancer, retention agent, drainage improver, coagulant, sulfuric acid band, bulking agent, dye, fluorescent whitening agent, pH adjuster, Examples thereof include a defoaming agent, an ultraviolet inhibitor, a fading inhibitor, a pitch control agent, a slime control agent, and the like, and they can be appropriately selected and used as necessary.
紙基材の製造（抄紙）方法、抄紙機の型式は特に限定されるものではなく、長網抄紙機、円網抄紙機、短網抄紙機、ギャップフォーマー型、ハイブリッドフォーマー型（オントップフォーマー型）等のツインワイヤー抄紙機等、公知の製造（抄紙）方法、抄紙機が選択可能である。また、抄紙時のｐＨは酸性領域（酸性抄紙）、疑似中性領域（疑似中性抄紙）、中性領域（中性抄紙）、アルカリ性領域（アルカリ性抄紙）のいずれでもよく、酸性領域で抄紙した後、紙層の表面にアルカリ性薬剤を塗工してもよい。また、紙基材は１層であってもよく、２層以上の多層で構成されていてもよい。 The method of manufacturing the paper base material (paper making) and the model of the paper machine are not particularly limited, and the long net paper machine, the circular net paper machine, the short net paper machine, the gap former type, and the hybrid former type (on-top) are not particularly limited. A known manufacturing (papermaking) method, such as a twin wire paper machine such as a former type), or a paper machine can be selected. The pH at the time of papermaking may be any of an acidic region (acidic papermaking), a pseudo-neutral region (pseudo-neutral papermaking), a neutral region (neutral papermaking), and an alkaline region (alkaline papermaking). Later, an alkaline agent may be applied to the surface of the paper layer. Further, the paper base material may be one layer or may be composed of two or more layers.
紙基材の坪量は、取り扱い性等により適宜選択可能であるが、通常は１８０ｇ／ｍ２以上４００ｇ／ｍ２以下程度のものが好ましく、２００ｇ／ｍ２以上３５０ｇ／ｍ２以下のものがより好ましい。
下記で詳述するが、紙基材中に含まれる水分から発生する水蒸気により発泡前の発泡断熱層（以下、単に「未発泡層」とも言う。）を発泡させて発泡断熱層を設ける場合、紙基材に含まれる水分量が重要である。発泡断熱層を設ける場合、紙基材に含まれる水分量は、好ましくは５ｇ／ｍ２以上であり、より好ましくは１０ｇ／ｍ２以上であり、さらに好ましくは１５ｇ／ｍ２以上である。また、好ましくは６０ｇ／ｍ２以下であり、より好ましくは４０ｇ／ｍ２以下である。
The basis weight of the paper substrate can be appropriately selected depending on the handleability and the like, but usually 180 g / m 2 or more and 400 g / m 2 or less is preferable, and 200 g / m 2 or more and 350 g / m 2 or less is usually preferable. More preferred.
As will be described in detail below, when the foamed heat insulating layer before foaming (hereinafter, also simply referred to as “non-foamed layer”) is foamed by water vapor generated from the moisture contained in the paper substrate to provide the foamed heat insulating layer. The amount of water contained in the paper substrate is important. When the foamed heat insulating layer is provided, the water content contained in the paper substrate is preferably 5 g / m 2 or more, more preferably 10 g / m 2 or more, and further preferably 15 g / m 2 or more. Further, it is preferably 60 g / m 2 or less, and more preferably 40 g / m 2 or less.
紙基材の密度は、所望に応じて適宜設定すればよく、特に限定されることはないが、０．６０ｇ／ｃｍ３以上とすることが好ましい。紙基材の密度が０．６０ｇ／ｃｍ３未満であると、紙製容器に必要な紙力が得られないことがある。
紙基材の密度の上限は特に制限されないが、発泡断熱層を設ける場合、紙基材の密度が０．９９ｇ／ｃｍ３を超えると、水蒸気が通りにくくなり、発泡性が低下する傾向が見られる。なお、発泡の均一性が不足している場合、紙基材の表面から水蒸気が均一に蒸散できるように、ポリビニルアルコール、でんぷんなど紙に親和性のある塗工液を塗工することもできる。
The density of the paper substrate may be appropriately set as desired, and is not particularly limited, but is preferably 0.60 g / cm 3 or more. If the density of the paper substrate is less than 0.60 g / cm 3 , the paper strength required for the paper container may not be obtained.
The upper limit of the density of the paper base material is not particularly limited, but when the foam insulation layer is provided, if the density of the paper base material exceeds 0.99 g / cm 3 , it becomes difficult for water vapor to pass through and the foamability tends to decrease. Be done. If the foaming uniformity is insufficient, a coating liquid having an affinity for paper, such as polyvinyl alcohol and starch, can be applied so that water vapor can be uniformly evaporated from the surface of the paper substrate.
・紙製バリア基材
紙製バリア基材は、紙基材上に、目止め層と、ガスバリア層とをこの順に有する。
・紙基材
紙基材としては、上記したものを使用することができる。
-Paper barrier base material The paper barrier base material has a sealing layer and a gas barrier layer in this order on the paper base material.
-Paper base material As the paper base material, the above-mentioned ones can be used.
・目止め層
目止め層は、ガスバリア層を設ける際のガスバリア層用塗工液の紙基材への沈み込みを抑えることにより、ガスバリア性の低下を防ぐものである。目止め層は、無機顔料とバインダー樹脂とを含有する。目止め層は、必要に応じてサイズ剤、耐水化剤、撥水剤、染料、界面活性剤等を含有させることができる。
-Sealing layer The sealing layer prevents the gas barrier property from deteriorating by suppressing the sinking of the coating liquid for the gas barrier layer into the paper substrate when the gas barrier layer is provided. The sealing layer contains an inorganic pigment and a binder resin. The sealing layer may contain a sizing agent, a water resistant agent, a water repellent agent, a dye, a surfactant and the like, if necessary.
無機顔料としては、例えば軽質炭酸カルシウム、重質炭酸カルシウム、カオリン、焼成カオリン、エンジニアードカオリン、クレー、デラミネーテッドクレー、タルク、シリカ、コロイダルシリカ、硫酸カルシウム、硫酸バリウム、二酸化チタン、酸化亜鉛、硫化亜鉛、炭酸亜鉛、サチンホワイト、珪酸アルミニウム、珪酸カルシウム、珪酸マグネシウム、水酸化アルミニウム、アルミナ、炭酸マグネシウム、水酸化マグネシウム、カオリナイト、アンチゴライト、スメクタイト、バーミキュライト、マイカなどが挙げられる。無機顔料としては、これらの１種または２種以上を混合して用いることができる。 Examples of inorganic pigments include light calcium carbonate, heavy calcium carbonate, kaolin, calcined kaolin, engineered kaolin, clay, delaminated clay, talc, silica, colloidal silica, calcium sulfate, barium sulfate, titanium dioxide, zinc oxide, and the like. Examples thereof include zinc sulfide, zinc carbonate, satin white, aluminum silicate, calcium silicate, magnesium silicate, aluminum hydroxide, alumina, magnesium carbonate, magnesium hydroxide, kaolinite, antigolite, smectite, vermiculite, and mica. As the inorganic pigment, one or a mixture of two or more of these can be used.
バインダー樹脂としては、塗工紙分野等で一般的に使用されている種類のものを適宜使用できる。例えば、完全ケン化ポリビニルアルコール、部分ケン化ポリビニルアルコール、エチレン共重合ポリビニルアルコール、アセトアセチル化ポリビニルアルコール、カルボキシ変性ポリビニルアルコール、アマイド変性ポリビニルアルコール、スルホン酸変性ポリビニルアルコール、ブチラール変性ポリビニルアルコール、オレフィン変性ポリビニルアルコール、ニトリル変性ポリビニルアルコール、ピロリドン変性ポリビニルアルコール、シリコーン変性ポリビニルアルコール、その他の変性ポリビニルアルコールなどのポリビニルアルコール類、（メタ）アクリル酸及び、（メタ）アクリル酸と共重合可能な単量体成分（オレフィンを除く）からなるアクリル系樹脂、ヒドロキシエチルセルロース、メチルセルロース、エチルセルロース、カルボキシメチルセルロース、アセチルセルロースなどのセルロース誘導体、酸化澱粉、エーテル化澱粉、エステル化澱粉などの澱粉類、スチレン−無水マレイン酸共重合体、スチレン−ブタジエン共重合体、カゼイン、アラビヤゴム、ポリ塩化ビニル、ポリ酢酸ビニル、ポリアクリルアミド、ポリアクリル酸エステル、ポリビニルブチラール、ポリスチロース及びそれらの共重合体、ポリアミド樹脂、シリコーン系樹脂、石油樹脂、テルペン樹脂、ケトン樹脂、クマロン樹脂等を挙げることができる。バインダーは、１種または２種以上を混合して使用することができる。 As the binder resin, a type generally used in the field of coated paper or the like can be appropriately used. For example, fully saponified polyvinyl alcohol, partially saponified polyvinyl alcohol, ethylene copolymerized polyvinyl alcohol, acetoacetylated polyvinyl alcohol, carboxy-modified polyvinyl alcohol, amide-modified polyvinyl alcohol, sulfonic acid-modified polyvinyl alcohol, butyral-modified polyvinyl alcohol, olefin-modified polyvinyl. Polyvinyl alcohols such as alcohol, nitrile-modified polyvinyl alcohol, pyrrolidone-modified polyvinyl alcohol, silicone-modified polyvinyl alcohol, and other modified polyvinyl alcohols, (meth) acrylic acid, and monomer components that can be copolymerized with (meth) acrylic acid ( Acrylic resin (excluding olefins), hydroxyethyl cellulose, methyl cellulose, ethyl cellulose, carboxymethyl cellulose, cellulose derivatives such as acetyl cellulose, starches such as oxidized starch, etherified starch, esterified starch, styrene-maleic anhydride copolymer. , Styrene-butadiene copolymer, casein, arabiya rubber, polyvinyl chloride, polyvinyl acetate, polyacrylamide, polyacrylic acid ester, polyvinyl butyral, polyvinyl alcohol and their copolymers, polyamide resin, silicone resin, petroleum resin, Examples thereof include terpen resin, ketone resin, and kumaron resin. The binder can be used alone or in admixture of two or more.
・ガスバリア層
ガスバリア層は、無機顔料とポリビニルアルコール系樹脂とを含有し、ガスバリア性を付与するものである。無機顔料としては、上述の目止め層に使用可能な無機顔料を適宜使用可能である。無機顔料としては、これらの１種または２種以上を混合して用いることができる。
-Gas barrier layer The gas barrier layer contains an inorganic pigment and a polyvinyl alcohol-based resin to impart gas barrier properties. As the inorganic pigment, an inorganic pigment that can be used for the above-mentioned sealing layer can be appropriately used. As the inorganic pigment, one or a mixture of two or more of these can be used.
ポリビニルアルコール系樹脂としては、完全ケン化ポリビニルアルコール、部分ケン化ポリビニルアルコール、エチレン共重合ポリビニルアルコール、アセトアセチル化ポリビニルアルコール、カルボキシ変性ポリビニルアルコール、アマイド変性ポリビニルアルコール、スルホン酸変性ポリビニルアルコール、ブチラール変性ポリビニルアルコール、オレフィン変性ポリビニルアルコール、ニトリル変性ポリビニルアルコール、ピロリドン変性ポリビニルアルコール、シリコーン変性ポリビニルアルコール、その他の変性ポリビニルアルコールなどのポリビニルアルコール類を用いることができる。 Examples of the polyvinyl alcohol-based resin include fully saponified polyvinyl alcohol, partially saponified polyvinyl alcohol, ethylene copolymerized polyvinyl alcohol, acetoacetylated polyvinyl alcohol, carboxy-modified polyvinyl alcohol, amide-modified polyvinyl alcohol, sulfonic acid-modified polyvinyl alcohol, and butyral-modified polyvinyl. Polyvinyl alcohols such as alcohol, olefin-modified polyvinyl alcohol, nitrile-modified polyvinyl alcohol, pyrrolidone-modified polyvinyl alcohol, silicone-modified polyvinyl alcohol, and other modified polyvinyl alcohol can be used.
また、ガスバリア層には、後述する液体不浸透層との密着性を向上させるため、ポリエチレンイミン、有機チタン系化合物、ポリブタジエン系化合物から選択される少なくとも１種を含有してもよい。有機チタン系化合物としては、チタニウム−ｉ−プロポキシオクチレングリコレート、ジ−ｉ−プロポキシ・ビス（アセチルアセトナト）チタン等のチタンアルコキシド等が例示可能であり、具体例としては、マツモトファインケミカル社製「オルガチックス」シリーズ等が挙げられる。また、ポリブタジエン系化合物としては、日本曹達社製の液状ポリブタジエン「ＮＩＳＳＯ−ＰＢ」シリーズ等が例示可能である。更に、バリア性の補助のためセルロースナノファイバーを含有してもよい。
これらの液体不浸透層との密着性を向上させる成分（化合物）は、ガスバリア層を形成するための塗工液に含有させてもよいし、ガスバリア層を形成した後に、公知の塗工装置等により、ガスバリア層上に塗工して含有させることもできる。
Further, the gas barrier layer may contain at least one selected from polyethyleneimine, an organic titanium-based compound, and a polybutadiene-based compound in order to improve the adhesion to the liquid impermeable layer described later. Examples of the organic titanium compound include titanium alkoxides such as titanium-i-propoxyoctylene glycolate and di-i-propoxybis (acetylacetonato) titanium, and specific examples thereof are manufactured by Matsumoto Fine Chemicals Co., Ltd. Examples include the "Organics" series. Further, as the polybutadiene compound, a liquid polybutadiene "NISSO-PB" series manufactured by Nippon Soda Co., Ltd. can be exemplified. Further, cellulose nanofibers may be contained to assist the barrier property.
These components (compounds) that improve the adhesion to the liquid impermeable layer may be contained in the coating liquid for forming the gas barrier layer, or after the gas barrier layer is formed, a known coating device or the like may be contained. Therefore, it can be coated on the gas barrier layer and contained.
無機顔料の配合量は、乾燥重量でポリビニルアルコール系樹脂１００重量部に対して、１重量部以上１０００重量部以下の範囲で使用されることが好ましい。なお、本発明において、無機顔料をガスバリア層用塗工液に配合する際に、無機顔料がスラリー化したものを添加し混合することが好ましい。
さらに、本発明において、ガスバリア層には、無機顔料、ポリビニルアルコール系樹脂の他、分散剤、増粘剤、保水剤、消泡剤、耐水化剤、染料、蛍光染料、架橋剤等の通常使用される各種助剤を使用することができる。
The amount of the inorganic pigment blended is preferably in the range of 1 part by weight or more and 1000 parts by weight or less with respect to 100 parts by weight of the polyvinyl alcohol-based resin by dry weight. In the present invention, when the inorganic pigment is blended in the coating liquid for the gas barrier layer, it is preferable to add and mix the slurry of the inorganic pigment.
Further, in the present invention, in addition to the inorganic pigment and polyvinyl alcohol resin, the gas barrier layer is usually used with a dispersant, a thickener, a water retention agent, a defoaming agent, a water resistant agent, a dye, a fluorescent dye, a cross-linking agent and the like. Various auxiliaries can be used.
紙製バリア基材は、紙基材上に、目止め層、ガスバリア層を形成するための塗工液を、順次、塗工、乾燥することにより、製造することができる。
目止め層、ガスバリア層の塗工方法は特に限定されるものではなく、公知の塗工装置および塗工系で塗工することができる。例えば、塗工装置としてはブレードコーター、バーコーター、エアナイフコーター、カーテンコーター、スプレーコーター、ロールコーター、リバースロールコーター、サイズプレスコーター、ゲートロールコーター等が挙げられる。また、塗工系としては、水等の溶媒を使用した水系塗工、有機溶剤等の溶媒を使用した溶剤系塗工などが挙げられる。
目止め層、ガスバリア層を乾燥させる手法としては、例えば、蒸気加熱ヒーター、ガスヒーター、赤外線ヒーター、電気ヒーター、熱風加熱ヒーター、マイクロウェーブ、シリンダードライヤー等の通常の方法が用いられる。
The paper barrier base material can be produced by sequentially applying and drying a coating liquid for forming a sealing layer and a gas barrier layer on the paper base material.
The coating method of the sealing layer and the gas barrier layer is not particularly limited, and coating can be performed by a known coating device and coating system. For example, examples of the coating device include a blade coater, a bar coater, an air knife coater, a curtain coater, a spray coater, a roll coater, a reverse roll coater, a size press coater, a gate roll coater, and the like. In addition, examples of the coating system include water-based coating using a solvent such as water, solvent-based coating using a solvent such as an organic solvent, and the like.
As a method for drying the sealing layer and the gas barrier layer, for example, a usual method such as a steam heater, a gas heater, an infrared heater, an electric heater, a hot air heater, a microwave, or a cylinder dryer is used.
目止め層の塗工量は、乾燥重量で３ｇ／ｍ２以上１５ｇ／ｍ２以下とすることが好ましい。塗工量が３ｇ／ｍ２未満であると目止め効果が不十分である場合がある。一方、１５ｇ／ｍ２より多いと、塗工時の乾燥負荷が大きくなり、操業面、コスト面の両方の観点より好ましくない。
ガスバリア層の塗工量は、乾燥重量で０．２ｇ／ｍ２以上２０ｇ／ｍ２以下とすることが好ましい。ガスバリア層の塗工量が０．２ｇ／ｍ２未満であると、均一なガスバリア層を形成することが困難であるため、十分なガスバリア性が得られなくなることがある。一方、２０ｇ／ｍ２より多いと、塗工時の乾燥負荷が大きくなり、操業面、コスト面の両方の観点より好ましくない。
The amount of coating of the sealing layer is preferably 3 g / m 2 or more and 15 g / m 2 or less in terms of dry weight. If the coating amount is less than 3 g / m 2 , the sealing effect may be insufficient. On the other hand, if it is more than 15 g / m 2 , the drying load at the time of coating becomes large, which is not preferable from the viewpoint of both operation and cost.
The coating amount of the gas barrier layer is preferably 0.2 g / m 2 or more and 20 g / m 2 or less in terms of dry weight. If the coating amount of the gas barrier layer is less than 0.2 g / m 2 , it is difficult to form a uniform gas barrier layer, so that sufficient gas barrier properties may not be obtained. On the other hand, if it is more than 20 g / m 2 , the drying load at the time of coating becomes large, which is not preferable from the viewpoint of both operation and cost.
なお、本発明の第一、第二の紙製容器において、胴部材、底板部材に使用する紙基材における、坪量、パルプ組成、紙料組成等は同一であっても異なっていてもよい。また、本発明の第二の紙製容器において、胴部材、底板部材に使用する紙製バリア基材における、紙基材の坪量、パルプ組成、紙料組成等；目止め層の組成、塗工量等；ガスバリア層の組成、塗工量等は同一であっても異なっていてもよい。 In the first and second paper containers of the present invention, the basis weight, pulp composition, paper composition, etc. of the paper base material used for the body member and the bottom plate member may be the same or different. .. Further, in the second paper container of the present invention, the basis weight, pulp composition, paper material composition, etc. of the paper base material in the paper barrier base material used for the body member and the bottom plate member; the composition of the sealing layer, the coating, etc. Work amount, etc .; The composition of the gas barrier layer, the coating amount, etc. may be the same or different.
・液体不浸透層
液体不浸透層は、胴部材と底板部材の内面側に位置し、容器に成形後、容器内に注がれた液体の紙基材、または紙製バリア基材への液体の浸透を防ぐものである。
液体不浸透層は、その目的を達することができる材料であれば、特に制限することなく使用することができ、例えば、熱可塑性樹脂を好適に用いることができる。熱可塑性樹脂からなる液体不浸透層を有する胴部材と底板部材は、ヒートシール加工による紙製容器への成形が可能である。熱可塑性樹脂としては、結晶性樹脂、非結晶性樹脂のどちらの熱可塑性樹脂も使用することができる。
-Liquid impermeable layer The liquid impermeable layer is located on the inner surface side of the body member and bottom plate member, and is a liquid that is poured into a container after being molded into a container or a liquid on a paper barrier substrate. It prevents the penetration of.
The liquid impermeable layer can be used without particular limitation as long as it is a material that can achieve the purpose, and for example, a thermoplastic resin can be preferably used. The body member and bottom plate member having a liquid impermeable layer made of a thermoplastic resin can be molded into a paper container by heat sealing. As the thermoplastic resin, either a crystalline resin or a non-crystalline resin can be used.
結晶性の熱可塑性樹脂の例としては、ポリエチレン、ポリプロピレン、ポリメチルペンテン等のポリオレフィン系樹脂、ポリエステル系樹脂、ポリアミド樹脂、ポリアセタール樹脂、ポリフェニレンサルファイド（ＰＰＳ）樹脂等が挙げられる。非結晶性熱可塑性樹脂の例としては、ポリスチレン、ポリ塩化ビニル、ＡＢＳ樹脂、アクリル樹脂、変性ポリフェニレンエーテル（ＰＰＥ）、ポリカーボネート、ポリウレタン、ポリ酢酸ビニル、非結晶性ポリエチレンテレフタレート（ＰＥＴ）等が挙げられる。また、ポリ乳酸（ＰＬＡ）、酢酸セルロース、ポリブチレンサクシネート（ＰＢＳ）、ポリブチレンサクシネートアジペート（ＰＢＳＡ）、ポリブチレンアジペート／テレフタレート（ＰＢＡＴ）、ポリヒドロキシアルカノエート（ＰＨＡ）、バイオマスポリエチレン、バイオマスポリエチレンテレフタレート等の植物由来の熱可塑性樹脂を用いてもよい。これらの熱可塑性樹脂は、単一の樹脂を単層で使用することも、複数の樹脂を複層で使用することもできる。また、胴部材と底板部材の液体不浸透層において、同一、または異なる熱可塑性樹脂を使用することができる。 Examples of crystalline thermoplastic resins include polyolefin resins such as polyethylene, polypropylene and polymethylpentene, polyester resins, polyamide resins, polyacetal resins, polyphenylene sulfide (PPS) resins and the like. Examples of the non-crystalline thermoplastic resin include polystyrene, polyvinyl chloride, ABS resin, acrylic resin, modified polyphenylene ether (PPE), polycarbonate, polyurethane, polyvinyl acetate, non-crystalline polyethylene terephthalate (PET) and the like. .. Also, polylactic acid (PLA), cellulose acetate, polybutylene succinate (PBS), polybutylene succinate adipate (PBSA), polybutylene adipate / terephthalate (PBAT), polyhydroxyalkanoate (PHA), biomass polyethylene, biomass polyethylene. A plant-derived thermoplastic resin such as terephthalate may be used. As these thermoplastic resins, a single resin may be used in a single layer, or a plurality of resins may be used in a plurality of layers. Further, the same or different thermoplastic resins can be used in the liquid impermeable layer of the body member and the bottom plate member.
熱可塑性樹脂としては、押出しラミネート適性、ヒートシール適性の点から、ポリエチレンが好ましく、特に、高融点の低密度ポリエチレンまたは中密度ポリエチレンが好ましいが、高密度ポリエチレンや高密度ポリエチレンと低密度ポリエチレンのブレンド樹脂を用いてもよい。液体不浸透層にポリエチレンを使用する場合、その融点は、１０５℃以上であることが好ましく、１１０℃以上であることがより好ましい。 As the thermoplastic resin, polyethylene is preferable from the viewpoint of extruded laminating suitability and heat seal suitability, and low-density polyethylene or medium-density polyethylene having a high melting point is particularly preferable, but high-density polyethylene or a blend of high-density polyethylene and low-density polyethylene is preferable. Resin may be used. When polyethylene is used for the liquid impermeable layer, its melting point is preferably 105 ° C. or higher, more preferably 110 ° C. or higher.
・発泡断熱層
本発明の紙製容器において、胴部材、または胴部材と底板部材の外面側に、発泡断熱層を設けることができる。
少なくとも胴部材の外面側に発泡断熱層を備える紙製容器は、容器内に熱湯を注いでも外面に熱が伝わりにくいため、紙製容器を手で持って飲食することが容易である。
-Foam heat insulating layer In the paper container of the present invention, a foam heat insulating layer can be provided on the outer surface side of the body member or the body member and the bottom plate member.
At least in a paper container provided with an effervescent heat insulating layer on the outer surface side of the body member, heat is not easily transferred to the outer surface even if hot water is poured into the container, so that it is easy to hold the paper container by hand and eat and drink.
発泡断熱層は、その目的を達することができる材料であれば、特に制限することなく使用することができ、例えば、液体不浸透層で挙げた熱可塑性樹脂を用いることができる。熱可塑性樹脂としては、結晶性樹脂、非結晶性樹脂のどちらの熱可塑性樹脂も使用することができ、植物由来の熱可塑性樹脂を使用することもできる。熱可塑性樹脂からなる未発泡層を発泡させて発泡断熱層とする場合は、発泡性の点から単層であることが好ましい。 The foamed heat insulating layer can be used without particular limitation as long as it is a material that can achieve the purpose, and for example, the thermoplastic resin mentioned in the liquid impermeable layer can be used. As the thermoplastic resin, either a crystalline resin or a non-crystalline resin can be used, and a plant-derived thermoplastic resin can also be used. When an unexpanded layer made of a thermoplastic resin is foamed to form a foamed heat insulating layer, it is preferably a single layer from the viewpoint of foamability.
本発明の発泡断熱層に使用する熱可塑性樹脂は、押出しラミネート適性および発泡性が優れることからポリエチレンが好ましく、発泡性が特に優れることから、低密度ポリエチレンがより好ましく、融点が９０℃以上１２０℃以下である低密度ポリエチレンがさらに好ましい。 The thermoplastic resin used for the foamed heat insulating layer of the present invention is preferably polyethylene because it is excellent in extruded laminate suitability and foamability, and is more preferably low density polyethylene because it is particularly excellent in foamability, and has a melting point of 90 ° C. or higher and 120 ° C. The following low density polyethylene is more preferable.
本発明の紙製容器に発泡断熱層を設ける場合、発泡断熱層に使用する熱可塑性樹脂の融点は、液体不浸透層に使用する熱可塑性樹脂の融点よりも低いことが好ましい。このようにすることで、加熱によって生じた水蒸気により未発泡層を発泡させて発泡断熱層を形成する際に、未発泡層が発泡しやすく、かつ、液体不浸透層が溶融することを防ぐことができる。この融点の差は、５℃以上であることが好ましく、１０℃以上であることがより好ましい。融点の差が５℃未満では、発泡させる際の温度制御が困難となることがある。 When the foamed heat insulating layer is provided in the paper container of the present invention, the melting point of the thermoplastic resin used for the foamed heat insulating layer is preferably lower than the melting point of the thermoplastic resin used for the liquid impermeable layer. By doing so, when the unfoamed layer is foamed by the steam generated by heating to form the foamed heat insulating layer, the unfoamed layer is easily foamed and the liquid impermeable layer is prevented from melting. Can be done. This difference in melting point is preferably 5 ° C. or higher, and more preferably 10 ° C. or higher. If the difference in melting point is less than 5 ° C., it may be difficult to control the temperature during foaming.
・即席食品用発泡紙製容器の製造方法
本発明の第一の紙製容器では、紙基材に液体不浸透層を積層して胴部材形成用の積層体とし、紙製バリア基材に液体不浸透層を積層して、底板部材形成用の積層体とする。
本発明の第二の紙製容器では、紙製バリア基材に液体不浸透層を積層して胴部材形成用の積層体、底板部材形成用の積層体とする。
-Method for manufacturing foamed paper containers for instant foods In the first paper container of the present invention, a liquid impermeable layer is laminated on a paper base material to form a laminate for forming a body member, and a liquid is applied to a paper barrier base material. The impermeable layers are laminated to form a laminated body for forming a bottom plate member.
In the second paper container of the present invention, a liquid impermeable layer is laminated on a paper barrier base material to form a laminate for forming a body member and a laminate for forming a bottom plate member.
紙基材または紙製バリア基材に、液体不浸透層、または液体不浸透層と未発泡層を、押出しラミネート法、ウェットラミネート法、ドライラミネート法等の各種方法を適宜使用して積層することにより、液体不浸透層と、後に発泡断熱層となる未発泡層を形成することができる。紙基材または紙製バリア基材と、液体不浸透層または未発泡層の密着性、未発泡層の発泡性が良好となるため、押出しラミネート法が好ましい。
未発泡層を設ける場合、液体不浸透層と未発泡層とを設ける時間間隔は短い方が好ましい。間隔が長すぎると紙基材から水分が抜けて、十分な水蒸気が発生しなくなる場合がある。また、液体不浸透層と未発泡層とは、どちらを先に設けてもよい。
A liquid impermeable layer or a liquid impermeable layer and an unfoamed layer are laminated on a paper base material or a paper barrier base material by appropriately using various methods such as an extrusion laminating method, a wet laminating method, and a dry laminating method. This makes it possible to form a liquid impermeable layer and an unfoamed layer that will later become a foamed heat insulating layer. The extrusion laminating method is preferable because the adhesion between the paper base material or the paper barrier base material and the liquid impermeable layer or the non-foamed layer and the foamability of the non-foamed layer are good.
When the unfoamed layer is provided, it is preferable that the time interval between the liquid impermeable layer and the unfoamed layer is short. If the interval is too long, water may escape from the paper substrate and sufficient water vapor may not be generated. Further, either the liquid impermeable layer or the non-foamed layer may be provided first.
本発明において、押出しラミネート法の操業条件、即ち、熱可塑性樹脂の溶融温度、積層速度等は、使用する熱可塑性樹脂の種類や装置により適宜設定すればよく特に制限されないが、一般に、溶融温度は２００〜３５０℃程度、積層速度は５０〜２００ｍ／分程度である。また、ニップロールとしては硬度７０度以上（ＪＩＳ Ｋ−６２５３）のものを使用し、クーリングロールとこれに対向するニップロールによる押圧・圧着は、線圧１５ｋｇｆ／ｃｍ以上で行うことが好ましい。 In the present invention, the operating conditions of the extrusion laminating method, that is, the melting temperature of the thermoplastic resin, the laminating speed, and the like may be appropriately set depending on the type and apparatus of the thermoplastic resin to be used, but the melting temperature is generally not limited. The temperature is about 200 to 350 ° C., and the stacking speed is about 50 to 200 m / min. Further, it is preferable to use a nip roll having a hardness of 70 degrees or more (JIS K-6253), and press and crimp the cooling roll and the nip roll facing the cooling roll at a linear pressure of 15 kgf / cm or more.
液体不浸透層の厚さは、２０μｍ以上２００μｍ以下であることが好ましい。液体不浸透層の厚さが２０μｍ未満では、ヒートシールの強度が不足する場合がある。液体不浸透層の厚さが２００μｍより厚くても、その品質はほとんど向上しない。
未発泡層を設ける場合、その厚さは、所望する品質の発泡断熱層が得られればよく、特に限定されないが、３０μｍ以上８０μｍ以下であることが好ましい。この範囲であれば、発泡後に十分な断熱性を実現できる。
The thickness of the liquid impermeable layer is preferably 20 μm or more and 200 μm or less. If the thickness of the liquid impermeable layer is less than 20 μm, the strength of the heat seal may be insufficient. Even if the thickness of the liquid impermeable layer is thicker than 200 μm, the quality is hardly improved.
When the unfoamed layer is provided, the thickness thereof is not particularly limited as long as a foamed heat insulating layer of a desired quality can be obtained, but is preferably 30 μm or more and 80 μm or less. Within this range, sufficient heat insulating properties can be realized after foaming.
本発明の第一の紙製容器では、胴部材の紙基材と液体不浸透層との間にさらにポリエステル系樹脂またはポリアミド系樹脂から選択される少なくとも１種の熱可塑性樹脂層を設けることができる。
ポリエステル系樹脂としては、特に限定されないが、ポリエチレンテレフタレート（ＰＥＴ）、ポリブチレンテレフタレート（ＰＢＴ）、ポリエチレンナフタレート（ＰＥＮ）、ポリブチレンサクシネート（ＰＢＳ）、ポリブチレンサクシネートアジペート（ＰＢＳＡ）、ポリブチレンアジペートテレフタレート（ＰＢＡＴ）、ポリアリレート（ＰＡＲ）、ポリヒドロキシアルカン酸（ＰＨＡ）（３−ヒドロキシアルカン酸からなるポリエステル樹脂）、ポリ乳酸（ＰＬＡ）、ポリカーボネート（ＰＣ）等から選ばれる１種又は２種以上を用いることができる。これらの中でより好ましいポリエステル系樹脂としては、ＰＥＴ、ＰＢＳ、ＰＢＳＡ、ＰＢＴ、及びＰＥＮが挙げられる。
In the first paper container of the present invention, at least one thermoplastic resin layer selected from polyester resin or polyamide resin may be further provided between the paper base material of the body member and the liquid impermeable layer. can.
The polyester resin is not particularly limited, but is polyethylene terephthalate (PET), polybutylene terephthalate (PBT), polyethylene naphthalate (PEN), polybutylene succinate (PBS), polybutylene succinate adipate (PBSA), and polybutylene. One or two selected from adipate terephthalate (PBAT), polyallylate (PAR), polyhydroxyalkanoic acid (PHA) (polyester resin consisting of 3-hydroxyalkanoic acid), polylactic acid (PLA), polycarbonate (PC), etc. The above can be used. Among these, more preferable polyester-based resins include PET, PBS, PBSA, PBT, and PEN.
ポリアミド樹脂としては、例えば、３員環以上のラクタムとω−アミノ酸とを重縮合させたもの、ジアミンとジカルボン酸とを共縮重合させたものなどが挙げられる。ポリアミド樹脂としては具体的に、４ナイロン、６ナイロン、７ナイロン、１１ナイロン、１２ナイロン、４６ナイロン、６６ナイロン、６９ナイロン、ＭＸＤ６ナイロン等が挙げられる。これらのポリアミド樹脂は、それぞれ単独で用いても良く、２種以上を混合して用いても良い。これらの中でより好ましいポリアミド樹脂としては、耐熱性、コストの観点から、６ナイロンや６６ナイロンが挙げられる。 Examples of the polyamide resin include those obtained by polycondensing lactam having a three-membered ring or more and ω-amino acid, and those obtained by copolymerizing diamine and a dicarboxylic acid. Specific examples of the polyamide resin include 4 nylon, 6 nylon, 7 nylon, 11 nylon, 12 nylon, 46 nylon, 66 nylon, 69 nylon, MXD6 nylon and the like. These polyamide resins may be used alone or in combination of two or more. Among these, more preferable polyamide resins include 6 nylon and 66 nylon from the viewpoint of heat resistance and cost.
紙基材または紙製バリア基材に、液体不浸透層、または液体不浸透層と未発泡層を積層した積層体を、所定の形状で打ち抜き、胴部材と底板部材とが得られる。そして、得られた胴部材と底板部材を、液体不浸透層が内面側となるようにカップ成形機にかけてカップ形状とし、必要に応じて未発泡層を発泡させて発泡断熱層とすることにより、本発明の紙製容器を得ることができる。 A liquid impermeable layer or a laminate obtained by laminating a liquid impermeable layer and an unfoamed layer on a paper base material or a paper barrier base material is punched out in a predetermined shape to obtain a body member and a bottom plate member. Then, the obtained body member and bottom plate member are subjected to a cup molding machine so that the liquid impermeable layer is on the inner surface side to form a cup shape, and if necessary, the unfoamed layer is foamed to form a foamed heat insulating layer. The paper container of the present invention can be obtained.
カップ成形機による加工の際、特に紙基材が多層品である場合に、紙基材の内部結合強さが弱いと、カップ成形時のトップカール部やカートンブランクの罫線部において紙基材内部が破壊され、成形不良の原因となる場合がある。紙基材の内部結合強さは、Ｊ．ＴＡＰＰＩ Ｎｏ．１８−２：２０００に規定される「紙及び板紙−内部結合強さ試験方法−第２部：インターナルボンドテスタ法」に準拠して測定することができ、この内部結合強さが１．５ｋｇｆ・ｃｍ以上、望ましくは１．８ｋｇｆ・ｃｍ以上、より望ましくは２．０ｋｇｆ・ｃｍ以上あれば成形時に紙基材内部での破壊が発生しにくく、成形不良を防ぐことができる。 When processing with a cup molding machine, especially when the paper base material is a multi-layer product, if the internal bond strength of the paper base material is weak, the inside of the paper base material is inside the top curl part and the ruled line part of the carton blank during cup molding. May be destroyed and cause molding defects. The internal bond strength of the paper substrate is determined by J.I. TAPPI No. It can be measured in accordance with "Paper and Paperboard-Internal Bond Strength Test Method-Part 2: Internal Bond Tester Method" specified in 18-2: 2000, and this internal bond strength is 1.5 kgf. -If the thickness is cm or more, preferably 1.8 kgf · cm or more, more preferably 2.0 kgf · cm or more, the inside of the paper substrate is less likely to be broken during molding, and molding defects can be prevented.
本発明の紙製容器は、上記した胴部材と底板部材とからなる。本発明の紙製容器は、胴部材の外面にスリーブを備え、胴部材とスリーブとの間に断熱空間を設けた「複合容器」とすることもできる。 The paper container of the present invention comprises the above-mentioned body member and bottom plate member. The paper container of the present invention may be a "composite container" in which a sleeve is provided on the outer surface of the body member and a heat insulating space is provided between the body member and the sleeve.
以下、本発明を実施例により説明するが、本発明は下記実施例のみに限定されるものではない。なお、特に断らない限り、例中の部および％は、それぞれ固形分での重量部、重量％を示す。 Hereinafter, the present invention will be described with reference to Examples, but the present invention is not limited to the following Examples. Unless otherwise specified, parts and% in the examples indicate parts by weight and% by weight, respectively.
（目止め層用塗工液の調製）
下記配合からなる配合物を撹拌分散して、目止め層用塗工液を調製した。
＜目止め層用塗工液＞
微粒カオリン（ＫａＭｉｎ社製：ハイドラグロス） ６０．０部
エンジニアードカオリン（イメリス社製：ＣａｐｉｍＤＧ） ２０．０部
ポリアクリル酸ソーダ ０．５部
重質炭酸カルシウム（ファイマテック社製：ＦＭＴ−９０） ２０．０部
スチレン・ブタジエン系共重合ラテックス
（日本ゼオン社製：ＰＮＴ８１１０） ２０．０部
酸化澱粉（敷島スターチ社製：マーメイドＭ２１０） ２．０部
水 ７１．７部
(Preparation of coating liquid for sealing layer)
A coating liquid for a sealing layer was prepared by stirring and dispersing a formulation consisting of the following formulations.
<Coating liquid for sealing layer>
Fine-grained kaolin (KaMin: Hydragloss) 60.0 parts Engineered Kaolin (Imelis: CapimDG) 20.0 parts Polyacrylic acid sodium 0.5 parts Heavy calcium carbonate (Fimatec: FMT-90) 20.0 parts Styrene-butadiene copolymer latex (Nippon Zeon: PNT8110) 20.0 parts Oxidized starch (Shikishima Starch: Mermaid M210) 2.0 parts Water 71.7 parts
（ガスバリア層用塗工液の調製）
下記配合からなる配合物を撹拌分散して、ガスバリア層用塗工液を調製した。
＜ガスバリア層用塗工液＞
エンジニアードカオリン（イメリス社製：バリサーフＨＸ） １００．０部
ポリアクリル酸ソーダ ０．２部
ポリエチレンイミン ３．０部
ポリビニルアルコール（クラレ社製、ＰＶＡ１１７） １００．０部
水 １８０１．８部
(Preparation of coating liquid for gas barrier layer)
A coating liquid for a gas barrier layer was prepared by stirring and dispersing a formulation consisting of the following formulations.
<Coating liquid for gas barrier layer>
Engineered Kaolin (Imeris: Varisurf HX) 100.0 parts Sodium polyacrylate 0.2 parts Polyethylenimine 3.0 parts Polyvinyl alcohol (Kuraray, PVA117) 100.0 parts Water 1801.8 parts
「実施例１」
紙基材（坪量３０９ｇ／ｍ２の紙器原紙、３層品）の片面に、液体不浸透層として中密度ポリエチレン（住友化学社製：Ｌ５７２１、融点１２８℃）を押出しラミネートによりダイ下温度３３０℃にて厚み４０μｍで積層した。紙基材と液体不浸透層の密着性は紙剥けレベルであった。本構成を胴部材として用いた。
"Example 1"
Medium-density polyethylene (manufactured by Sumitomo Chemical Co., Ltd .: L5721, melting point 128 ° C.) is extruded as a liquid impermeable layer on one side of a paper base material (paper container base paper with a basis weight of 309 g / m 2 and a three-layer product), and the temperature under the die is 330 by laminating. Laminated at 40 μm in thickness at ° C. The adhesion between the paper substrate and the liquid impermeable layer was at the level of peeling. This configuration was used as a body member.
紙基材（坪量２１０ｇ／ｍ２の紙器原紙、単層品）の片面に、目止め層用塗工液を乾燥重量で塗工量６．０ｇ／ｍ２となるようにブレード法で塗工、乾燥した後、その上にガスバリア層用塗工液を乾燥重量で塗工量３．０ｇ／ｍ２となるようにエアナイフ法で塗工、乾燥し、ソフトニップカレンダーを用いて線圧６０ｋＮ／ｍの条件で処理して、紙製バリア基材（坪量２１９ｇ／ｍ２）を得た。
この紙製バリア基材のガスバリア層上に、液体不浸透層として中密度ポリエチレン（住友化学社製：Ｌ５７２１、融点１２８℃）を押出しラミネートによりダイ下温度３３０℃にて厚み４０μｍで積層した。ガスバリア層と液体不浸透層の密着性は紙剥けレベルであった。本構成を底板部材として用いた。
これらを所定の形状で打ち抜き、カップ成形機にて液体不浸透層が内面側となるようにカップ成形を行い、５個の紙製容器を得た。成形性、外観について、問題はなかった。
Apply the coating liquid for the sealing layer to one side of the paper substrate (paper container base paper with a basis weight of 210 g / m 2 and a single-layer product) by the blade method so that the coating amount is 6.0 g / m 2 by dry weight. After working and drying, apply the coating liquid for the gas barrier layer on it by the air knife method so that the coating amount is 3.0 g / m 2 by the dry weight, and dry it, and use the soft nip calendar to apply a linear pressure of 60 kN. The treatment was carried out under the condition of / m to obtain a paper barrier base material (basis weight 219 g / m 2 ).
Medium-density polyethylene (manufactured by Sumitomo Chemical Co., Ltd .: L5721, melting point 128 ° C.) was extruded and laminated on the gas barrier layer of this paper barrier substrate at a temperature below the die of 330 ° C. to a thickness of 40 μm as a liquid impermeable layer. The adhesion between the gas barrier layer and the liquid impermeable layer was at the level of paper peeling. This configuration was used as a bottom plate member.
These were punched out in a predetermined shape, and cup molding was performed with a cup molding machine so that the liquid impermeable layer was on the inner surface side, and five paper containers were obtained. There were no problems with formability and appearance.
「実施例２」
紙基材（坪量３００ｇ／ｍ２の紙器原紙、３層品）を用いた以外は、上記実施例１の底板部材の製造方法と同様にして、紙製バリア基材（坪量３０９ｇ／ｍ２）のガスバリア層上に液体不浸透層（厚み４０μｍ）を積層した。ガスバリア層と液体不浸透層の密着性は紙剥けレベルであった。本構成を胴部材として用いた。
底板部材は、実施例１と同じものを用いた。
次いで、所定の形状で打抜き、カップ成形機にて液体不浸透層が内面側となるようにカップ成形を行い、５個の紙製容器を得た。成形性、外観について、問題はなかった。
"Example 2"
A paper barrier base material (basis weight 309 g / m) is used in the same manner as in the method for manufacturing the bottom plate member of Example 1 above, except that a paper base material (paper container base paper having a basis weight of 300 g / m 2) is used. A liquid impermeable layer (thickness 40 μm) was laminated on the gas barrier layer of 2). The adhesion between the gas barrier layer and the liquid impermeable layer was at the level of paper peeling. This configuration was used as a body member.
The same bottom plate member as in Example 1 was used.
Next, punching was performed in a predetermined shape, and cup molding was performed with a cup molding machine so that the liquid impermeable layer was on the inner surface side to obtain five paper containers. There were no problems with formability and appearance.
「比較例１」
胴部材は、実施例１と同じものを用いた。
紙基材（坪量２２０ｇ／ｍ２の紙器原紙、単層品）の片面に液体不浸透層として中密度ポリエチレン（住友化学社製：Ｌ５７２１、融点１２８℃）を押出しラミネートによりダイ下温度３３０℃にて厚み４０μｍで積層した。紙基材と液体不浸透層の密着性は紙剥けレベルであった。本構成を底板部材として用いた。
次いで、所定の形状で打抜き、カップ成形機にて液体不浸透層が内面側となるようにカップ成形を行い、５個の紙製容器を得た。成形性、外観について、問題はなかった。
"Comparative Example 1"
As the body member, the same one as in Example 1 was used.
Medium-density polyethylene (manufactured by Sumitomo Chemical Co., Ltd .: L5721, melting point 128 ° C.) is extruded as a liquid impermeable layer on one side of a paper base material (paper container base paper with a basis weight of 220 g / m 2 and a single-layer product), and the temperature under the die is 330 ° C. Laminated with a thickness of 40 μm. The adhesion between the paper substrate and the liquid impermeable layer was at the level of peeling. This configuration was used as a bottom plate member.
Next, punching was performed in a predetermined shape, and cup molding was performed with a cup molding machine so that the liquid impermeable layer was on the inner surface side to obtain five paper containers. There were no problems with formability and appearance.
「比較例２」
胴部材は、実施例１と同じものを用いた。
タンデム押出しラミネーターを用いて、紙基材（坪量２２０ｇ／ｍ２の紙器原紙、単層品）とポリアミドフィルム（ＯＮＹ（二軸延伸ナイロン）フィルム、ユニチカ社製：エンブレム、厚み１５μｍ）とを、中密度ポリエチレン（住友化学社製：Ｌ５７２１、融点１２８℃、厚み１５μｍ）を介して貼り合わせ、さらに、ＯＮＹフィルム上に液体不浸透層として中密度ポリエチレン（住友化学社製：Ｌ５７２１、融点１２８℃）を押出しラミネートによりダイ下温度３３０℃にて厚み３５μｍで積層した。密着性は紙剥けレベルであった。本構成を底板部材として用いた。
次いで、所定の形状で打抜き、カップ成形機にて液体不浸透層が内面側となるようにカップ成形を行い、５個の紙製容器を得た。成形性、外観について、問題はなかった。
"Comparative Example 2"
As the body member, the same one as in Example 1 was used.
Using a tandem extruded laminator, a paper substrate (paper container base paper with a basis weight of 220 g / m 2 , single-layer product) and a polyamide film (ONY (biaxially stretched nylon) film, manufactured by Unitica: emblem, thickness 15 μm) were combined. Medium-density polyethylene (manufactured by Sumitomo Chemical Co., Ltd .: L5721, melting point 128 ° C., thickness 15 μm) is laminated, and further, medium-density polyethylene (manufactured by Sumitomo Chemical Co., Ltd .: L5721, melting point 128 ° C.) is used as a liquid impermeable layer on an ONY film. Was laminated by extrusion laminating at a temperature of 330 ° C. under the die to a thickness of 35 μm. The adhesion was at the paper peeling level. This configuration was used as a bottom plate member.
Next, punching was performed in a predetermined shape, and cup molding was performed with a cup molding machine so that the liquid impermeable layer was on the inner surface side to obtain five paper containers. There were no problems with formability and appearance.
「参考例１」
紙基材（坪量３２０ｇ／ｍ２の紙器原紙、３層品）の片側に、液体不浸透層として中密度ポリエチレン（住友化学社製：Ｌ５７２１、融点１２８℃）を押出しラミネートによりダイ下温度３３０℃にて厚み４０μｍで積層した。紙基材と液体不浸透層の密着性は紙剥けレベルであった。本構成を胴部材として用いた。
タンデム押出しラミネーターを用いて、紙基材（坪量２２０ｇ／ｍ２の紙器原紙、単層品）とＰＥＴフィルム（東洋紡社製：Ｅ５１００、厚み１２μｍ）とを、中密度ポリエチレン（住友化学社製：Ｌ５７２１、融点１２８℃、厚み１５μｍ）を介して貼り合わせ、さらに、ＰＥＴフィルム上に液体不浸透層として中密度ポリエチレン（住友化学社製：Ｌ５７２１、融点１２８℃）を押出しラミネートによりダイ下温度３３０℃にて厚み３５μｍで積層した。密着性は紙剥けレベルであった。本構成を底板部材として用いた。
次いで、所定の形状で打抜き、カップ成形機にてカップ成形を行い、５個の紙製容器を得た。成形性、外観について、問題はなかった。
"Reference example 1"
Medium-density polyethylene (manufactured by Sumitomo Chemical Co., Ltd .: L5721, melting point 128 ° C.) is extruded as a liquid impermeable layer on one side of a paper substrate (paper container base paper with a basis weight of 320 g / m 2 and a three-layer product), and the temperature under the die is 330 by laminating. Laminated at 40 μm in thickness at ° C. The adhesion between the paper substrate and the liquid impermeable layer was at the level of peeling. This configuration was used as a body member.
Using a tandem extruded laminator, a paper base material (paper container base paper with a basis weight of 220 g / m 2 and a single layer product) and PET film (Toyobo Co., Ltd .: E5100, thickness 12 μm) were combined with medium-density polyethylene (Sumitomo Chemical Co., Ltd .: L5721, melting point 128 ° C, melting point 15 μm) is bonded together, and medium-density polyethylene (manufactured by Sumitomo Chemical Co., Ltd .: L5721, melting point 128 ° C) is extruded onto a PET film as a liquid impermeable layer, and the temperature under the die is 330 ° C. Laminated with a thickness of 35 μm. The adhesion was at the paper peeling level. This configuration was used as a bottom plate member.
Next, punching was performed in a predetermined shape and cup molding was performed with a cup molding machine to obtain five paper containers. There were no problems with formability and appearance.
得られた紙製容器の染み出しについて、以下の方法で評価した。結果を表１に示す。
精製パーム油１０ｇに対してパプリカ色素（主成分：カプサイシン）０．５ｇを添加し、試験用油香辛料とした。
上記で得られた各５個の紙製容器のそれぞれに、試験用油香辛料１０．５ｇを入れた。この際、紙製容器内部の底面は、その全面が試験用油香辛料に浸されている。次いで、リッド（蓋）をヒートシールし、６０℃に設定した恒温機に７２時間静置した。
静置後、外観観察により胴部材と底板部材との巻締部から試験用油香辛料の染み出しが見られたものは染み出し箇所で、染み出しが見られなかったものは任意の箇所で、それぞれ底板を剃刀刃で裁断し、断面を光学顕微鏡で観察し、試験用油香辛料中のパプリカ色素が最外層に達しているかを確認した。
The exudation of the obtained paper container was evaluated by the following method. The results are shown in Table 1.
0.5 g of paprika pigment (main component: capsaicin) was added to 10 g of refined palm oil to prepare a test oil and spice.
10.5 g of test oil and spice was placed in each of the five paper containers obtained above. At this time, the entire bottom surface of the inside of the paper container is immersed in the test oil and spice. Next, the lid was heat-sealed and allowed to stand in a thermostat set at 60 ° C. for 72 hours.
After standing still, the test oil and spices exuded from the winding part between the body member and the bottom plate member by observing the appearance at the exuded part, and those without the exuded part were at any place. The bottom plate was cut with a razor blade, and the cross section was observed with an optical microscope to confirm whether the paprika pigment in the test oil and spice reached the outermost layer.
・巻締部からの染み出し
外観観察により、巻締部から染み出しが見られるかを確認し、以下の基準で評価を行った。
ＯＫ：５個の紙製容器の全てで、染み出しが見られない。
ＮＧ：５個の紙製容器のうち１つ以上で、染み出しが見られる。
・ Exudation from the winding part It was confirmed by observing the appearance that the exudation was seen from the winding part, and the evaluation was performed according to the following criteria.
OK: No bleeding is seen in all 5 paper containers.
NG: Exudation is seen in one or more of the five paper containers.
・底板部材の染み出し貫通
外観観察及び断面観察により、油香辛料が底板部材の最外層まで到達しているかを確認し、以下の基準で評価を行った。
ＯＫ：５個の紙製容器の全てで、油香辛料が最外層まで到達していない。
ＮＧ：５個の紙製容器のうち１つ以上で、油香辛料が最外層まで到達している。
・ Penetration of the bottom plate member Through appearance observation and cross-sectional observation, it was confirmed whether the oil spice had reached the outermost layer of the bottom plate member, and evaluation was performed according to the following criteria.
OK: In all 5 paper containers, the oil spices have not reached the outermost layer.
NG: Oil spices reach the outermost layer in one or more of the five paper containers.
参考例１で得られた紙製容器は、底板部材が紙基材と液体不浸透層との間に油脂が馴染みにくいＰＥＴフィルムを有しており、油香辛料の染み出しを防止することができた。
実施例１で製造した底板部材が紙製バリア基材を備える紙製容器と、実施例２で製造した胴部材と底板部材が紙製バリア基材を備える紙製容器は、参考例１と同様に、油香辛料の染み出しを防止することができた。
比較例１で製造した紙製容器は、胴部材、底板部材の両方が紙製バリア基材を備えておらず、油香辛料が巻締部から染み出し、また、油香辛料は底板部材を貫通していた。
比較例２で得られた紙製容器は、底板部材が紙基材と液体不浸透層との間にＯＮＹフィルムを有しており、油香辛料は底板部材を貫通しなかったが、油香辛料の巻締部からの染み出しは防止できなかった。
In the paper container obtained in Reference Example 1, the bottom plate member has a PET film between the paper base material and the liquid impermeable layer, which makes it difficult for oils and fats to blend in, and it is possible to prevent the oil and spices from seeping out. rice field.
The paper container in which the bottom plate member manufactured in Example 1 has a paper barrier base material and the paper container in which the body member and the bottom plate member manufactured in Example 2 have a paper barrier base material are the same as in Reference Example 1. In addition, it was possible to prevent the oil and spices from seeping out.
In the paper container manufactured in Comparative Example 1, neither the body member nor the bottom plate member is provided with the paper barrier base material, the oil spice seeps out from the winding portion, and the oil spice penetrates the bottom plate member. Was there.
In the paper container obtained in Comparative Example 2, the bottom plate member had an ONY film between the paper base material and the liquid impermeable layer, and the oil spice did not penetrate the bottom plate member, but the oil spice was used. It was not possible to prevent the exudation from the winding part.
Claims (3)
前記胴部材が、外面側から紙基材、液体不浸透層を備え、
前記底板部材が、外面側から紙製バリア基材、液体不浸透層を備え、
前記底板部材が備える前記紙製バリア基材が、紙基材上に、無機顔料及びバインダー樹脂を含有する目止め層と、無機顔料及びポリビニルアルコール系樹脂を含有するガスバリア層とをこの順に有し、
前記ガスバリア層上に前記液体不浸透層を有することを特徴とする油香辛料含有即席食品用紙製容器。 An instant food paper container containing oil and spices consisting of a body member and a bottom plate member.
The body member includes a paper base material and a liquid impermeable layer from the outer surface side.
The bottom plate member includes a paper barrier base material and a liquid impermeable layer from the outer surface side.
The paper barrier base material included in the bottom plate member has a sealing layer containing an inorganic pigment and a binder resin and a gas barrier layer containing an inorganic pigment and a polyvinyl alcohol-based resin on the paper base material in this order. ,
An oil-spicy-containing instant food paper container having the liquid impermeable layer on the gas barrier layer.
前記胴部材が、外面側から紙製バリア基材、液体不浸透層を備え、
前記底板部材が、外面側から紙製バリア基材、液体不浸透層を備え、
前記胴部材及び底板部材が備える前記紙製バリア基材が、紙基材上に、無機顔料及びバインダー樹脂を含有する目止め層と、無機顔料及びポリビニルアルコール系樹脂を含有するガスバリア層とをこの順に有し、
前記ガスバリア層上に前記液体不浸透層を有することを特徴とする油香辛料含有即席食品用紙製容器。 An instant food paper container containing oil and spices consisting of a body member and a bottom plate member.
The body member includes a paper barrier base material and a liquid impermeable layer from the outer surface side.
The bottom plate member includes a paper barrier base material and a liquid impermeable layer from the outer surface side.
The paper barrier base material included in the body member and the bottom plate member has a sealing layer containing an inorganic pigment and a binder resin and a gas barrier layer containing an inorganic pigment and a polyvinyl alcohol-based resin on the paper base material. Have in order,
An oil-spicy-containing instant food paper container having the liquid impermeable layer on the gas barrier layer.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2020108098A JP2022002978A (en) | 2020-06-23 | 2020-06-23 | Paper-made container for oil spice-containing instant food |
| PCT/JP2021/010860 WO2021261032A1 (en) | 2020-06-23 | 2021-03-17 | Paper container for oil spice-containing instant food |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2020108098A JP2022002978A (en) | 2020-06-23 | 2020-06-23 | Paper-made container for oil spice-containing instant food |
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| JP2022002978A true JP2022002978A (en) | 2022-01-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| JP2020108098A Pending JP2022002978A (en) | 2020-06-23 | 2020-06-23 | Paper-made container for oil spice-containing instant food |
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| JP (1) | JP2022002978A (en) |
| WO (1) | WO2021261032A1 (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010095171A1 (en) * | 2009-02-18 | 2010-08-26 | 日清食品ホールディングス株式会社 | Blank of paper container and method for producing paper container |
| WO2011040547A1 (en) * | 2009-09-30 | 2011-04-07 | 日本製紙株式会社 | Paper barrier material |
| JP2014113774A (en) * | 2012-12-11 | 2014-06-26 | Act:Kk | Multilayer sheet for heat-insulation paper container, heat-insulation paper container, and production method |
| US20190329928A1 (en) * | 2018-04-30 | 2019-10-31 | Westrock Mwv, Llc | Coated paperboard container, method of manufacturing a coated paperboard container, and cup bottom forming apparatus |
-
2020
- 2020-06-23 JP JP2020108098A patent/JP2022002978A/en active Pending
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2021
- 2021-03-17 WO PCT/JP2021/010860 patent/WO2021261032A1/en active Application Filing
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010095171A1 (en) * | 2009-02-18 | 2010-08-26 | 日清食品ホールディングス株式会社 | Blank of paper container and method for producing paper container |
| WO2011040547A1 (en) * | 2009-09-30 | 2011-04-07 | 日本製紙株式会社 | Paper barrier material |
| JP2014113774A (en) * | 2012-12-11 | 2014-06-26 | Act:Kk | Multilayer sheet for heat-insulation paper container, heat-insulation paper container, and production method |
| US20190329928A1 (en) * | 2018-04-30 | 2019-10-31 | Westrock Mwv, Llc | Coated paperboard container, method of manufacturing a coated paperboard container, and cup bottom forming apparatus |
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| WO2021261032A1 (en) | 2021-12-30 |
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