JP3796331B2 - Laminated film for food packaging - Google Patents
Laminated film for food packaging Download PDFInfo
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- JP3796331B2 JP3796331B2 JP25696097A JP25696097A JP3796331B2 JP 3796331 B2 JP3796331 B2 JP 3796331B2 JP 25696097 A JP25696097 A JP 25696097A JP 25696097 A JP25696097 A JP 25696097A JP 3796331 B2 JP3796331 B2 JP 3796331B2
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- film
- food packaging
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Description
【0001】
【発明の属する技術分野】
本発明は、食品包装用積層フィルムに関し、さらに詳しくは、乳白色系フィルムと灰色系フィルム、さらに必要に応じて、エチレン−α−オレフィン共重合体からなるフィルム層を積層してなる食品包装用積層フィルム。
【0002】
【従来の技術】
食品包装用積層フィルム、特に冷凍食品の包装用積層フィルムには、通常、内容物、特に揚げ物として用いられた油の変質を防止する意味から、遮光性が要求され、かつ、消費者の購買欲を喚起する意味から、ある程度の美観性も要求される。
【0003】
このような要求に対して、従来、アルミニウムを蒸着したポリエチレン等の樹脂フィルムにポリエチレンテレフタレートフィルム等を積層させたフィルムが用いられており、遮光性及び美観性を満足させている。
しかるに、アルミニウムを蒸着したポリエチレン等の樹脂フィルムの製造にあたっては、高価なアルミニウム真空蒸着装置が必要であり、フィルムの製造にコストがかかるという問題があり、また、アルミニウムを蒸着した樹脂フィルムが直接食品に触れるのは衛生上好ましくないことや、封緘するためには該アルミニウム蒸着フィルムの内側に更にフィルムをラミネートしなければならず、製品のコストアップにつながっていた。
【0004】
【発明が解決しようとする課題】
本発明は、上記観点からなされたもので、上記アルミニウム蒸着フィルムを用いることなく、しかも遮光性及び美観性に優れた食品包装用フィルムを低コストで提供することを目的とするものである。
【0005】
【課題を解決するための手段】
本発明者らは、鋭意研究を重ねた結果、白色顔料を特定量含有する乳白色系フィルムと、黒色顔料及び白色顔料を特定量含有する灰色系フィルム、さらに必要に応じて、エチレン−α−オレフィン共重合体からなるフィルム層を積層した食品包装用積層フィルムにより、前記目的を達成しうることを見出した。本発明は、かかる知見に基づいて完成したものである。
【0006】
すなわち、本発明は、以下の食品包装用積層フィルムを提供するものである。
(1)白色顔料の含有量が5〜20重量%であり、かつ厚みが10μm以上である乳白色系フィルムと、黒色顔料の含有量が0.2〜1.0重量%であり、かつ該黒色顔料1に対し、重量比で20〜60の割合で白色顔料を含有し、かつ厚みが10μm以上である灰色系フィルムとを積層してなる食品包装用積層フィルムにおいて、外面を乳白色系フィルムとすることを特徴とする食品包装用積層フィルム。
(2)上記(1)に記載の食品包装用積層フィルムにおける灰色系フィルム側にエチレン−α−オレフィン共重合体からなるフィルム層を積層した食品包装用積層フィルム。
【0007】
【発明の実施の形態】
以下、本発明の実施の形態を具体的に説明する。
1.積層フィルムを構成する各フィルム層の内容
(1)乳白色系フィルム層
▲1▼用いられる樹脂としては、特に問わず、エチレン−α−オレフィン共重合体からなる直鎖状低密度ポリエチレン(LLDPE),高圧法低密度ポリエチレン(LDPE),中密度ポリエチレン,ポリプロピレン,ポリアミド,ポリエステル等の熱可塑性樹脂から適宜選ばれる。中でも、高強度が得られる点から、エチレン−α−オレフィン共重合体が好ましく用いられる。この場合、α−オレフィンとしては、ブテン−1,ヘキセン,4−メチル−1−ペンテン,イソヘキサン,オクテン等が好適である。
【0008】
また、上記熱可塑性樹脂に対し、必要に応じて、熱安定剤,消臭剤,抗菌剤,アンチブロッキング剤,スリップ剤等を配合してもよい。
▲2▼また、この乳白色系フィルム層には、白色顔料が含まれていることが必要である。用いられる白色顔料としては、特に制限はなく、例えば、二酸化チタン,酸化亜鉛(亜鉛華),硫化亜鉛,硫酸バリウム,鉛白等をあげることができる。中でも、粒度が細かいため、白色度,隠蔽力,着色力にすぐれ、さらに耐光性,耐熱性,耐薬品性に優れることから、二酸化チタンが好ましく用いられる。
【0009】
白色顔料の含有量は、5〜30重量%、好ましくは10〜15重量%である。5重量%未満の場合、黒色着色層の影響により、外面の色目が灰色となり、美観性が悪化すると同時に、遮光性も悪くなり内容物が酸化されるおそれがある。一方、30重量%を超えると、フィルムの製造時、樹脂の溶融混練性が非常に低下し、色ムラが生じるおそれがある。
【0010】
▲3▼乳白色系フィルムの製造方法については、特に制限はなく、インフレーション成形法やTダイ成形等公知の押出成形法を用いればよい。
(2)灰色系フィルム層
▲1▼用いられる樹脂としては、特に問わず、エチレン−α−オレフィン共重合体からなる直鎖状低密度ポリエチレン(LLDPE),高圧法低密度ポリエチレン(LDPE),中密度ポリエチレン,ポリプロピレン,ポリアミド,ポリエステル等の熱可塑性樹脂から適宜選ばれる。中でも、高強度が得られることから、エチレン−α−オレフィン共重合体が好ましく用いられる。この場合、α−オレフィンとしては、ブテン−1,ヘキセン,4−メチル−1−ペンテン,イソヘキサン,オクテン等が好適である。
【0011】
また、上記熱可塑性樹脂に対し、必要に応じて、熱安定剤,消臭剤,抗菌剤,アンチブロッキング剤,スリップ剤等を配合してもよい。
▲2▼また、この灰色系フィルム層には、黒色顔料及び白色顔料が含まれていることが必要である。用いられる黒色顔料としては、特に制限はなく、例えば、 カーボンブラック,鉄黒,黒鉛等をあげることができるが、中でも、隠蔽力,着色力にすぐれ、さらに安価なことからカーボンブラックが好ましく用いられる。さらに、粒径についても、特に制限ないが、ファーネスカーボンブラックを用いる場合には、通常0.03〜0.04μmの範囲のものが用いられる。
【0012】
黒色顔料の含有量は、0.2〜1.0重量%、好ましくは0.3〜0.7重量%である。0.2重量%未満の場合、十分な遮光性が得られず、内容物が酸化されるおそれがある。1.0重量%を超えると、外面の色目が灰色となり、美観性が悪化することがある。さらに、黒色顔料1に対し、重量比で20〜60、好ましくは25〜50の割合で白色顔料を含有していることが必要である。20未満の場合、外面の色目が灰色となり、美観性が悪化し、60を超えると、顔料が均一に混合できないという問題が生じることがある。
【0013】
▲3▼灰色系フィルムの製造方法については、特に制限はなく、インフレーション成形法やTダイ成形等公知の押出成形法を用いればよい。
2.食品包装用積層フィルム
(1)前記乳白色系フィルムと、前記灰色系フィルムとを積層してなる積層フィルムである場合
▲1▼該食品包装用積層フィルム全体の厚みとしては、30μm以上であることが好ましい。この厚みが30μm未満の場合、強度が不足して破れやすくなる。上限については、目的に応じて適宜選択すればよい。
【0014】
▲2▼乳白色系フィルム層の厚みは10μm以上、好ましくは15μm以上である。乳白色系フィルム層の厚みが10μm未満の場合、美観性に劣るものになるおそれがあり、また積層フィルムを作成する際の共押出が困難になることがある。
▲3▼灰色系フィルム層の厚みは10μm以上、好ましくは15μm以上でありる。乳白色系フィルム層の厚みが10μm未満の場合、遮光性が不十分になるおそれがあり、また積層フィルムを作成する際の共押出が困難になることがある。
【0015】
▲4▼乳白色系フィルム層の厚みと灰色系フィルム層の厚みの比については、特に問わない。目的に応じて、適宜選択すればよい。
▲5▼乳白色系フィルムと灰色系フィルムの積層方法については、特に問わず、公知の押出ラミネーション、例えば、乳白色系フィルム基材上に灰色系フィルム用樹脂を直接融押出して接合する押出ラミネートが工程的にも経済的にも好ましい。
【0016】
▲6▼さらには、乳白色系フィルムの外側に、ポリアミドやポリエチレンテレフタレート等からなる樹脂層を積層させてもよい。これらの樹脂層の裏側、即ち、乳白色系フィルムに接する側には、印刷が施されることがある。
(2)上記(1)に記載の食品包装用積層フィルムにおける灰色系フィルム側にエチレン−α−オレフィン共重合体からなるフィルム層を積層したものである場合。
【0017】
▲1▼該エチレン−α−オレフィン共重合体からなるフィルム層は、シール性をさらに向上させることや接触する食品への安全性を確保する等の目的で積層させるのであるから、食品包装用積層フィルムにおける灰色系フィルム側に積層されることが必要である。
▲2▼上記エチレン−α−オレフィン共重合体としては、特に問わないが、密度が0.860〜0.935、MI(メルトインデックス)が0.5〜7.0であり、コモノマーであるα−オレフィンとしては、ブテン−1,ヘキセン,4−メチル−1−ペンテン,イソヘキサン,オクテン等である。
【0018】
▲3▼上記(1)に記載の食品包装用積層フィルムと上記エチレン−α−オレフィン共重合体樹脂フィルムの積層方法については、特に問わず、公知の押出ラミネーション、例えば、上記(1)に記載の食品包装用積層フィルム基材上に上記直鎖状低密度ポリエチレン樹脂フィルムを直接融押出して接合する押出ラミネートが工程的にも経済的にも好ましい。
【0019】
▲4▼さらには、乳白色系フィルムの外側に、ポリアミドやポリエチレンテレフタレート等からなる樹脂層を積層させてもよい。これらの樹脂層の裏側、即ち、乳白色系フィルムに接する側には、印刷が施されることがある。
【0020】
【実施例】
次に、本発明を実施例によりさらに詳しく説明するが、本発明は、これらの例によって限定されるものではない。
〔実施例〕
(1)乳白色系フィルムの作成
エチレン−α−オレフィン共重合体(出光石油化学製 モアテック0138N)(α−オレフィンが1−オクテンであるエチレン−α−オレフィン共重合体)79.2グラムに、スリップ剤(出光石油化学製 EB43)0.1グラム及びアンチブロッキング剤0.2グラムを低密度ポリエチレン8.6グラムに溶かしたものを添加して樹脂成分とし、そこへ、白色顔料として二酸化チタン11.9 グラムを加えた。これをインフレーション成形して、厚さ16μmの乳白色系フィルムを得た。
(2)灰色系フィルムの作成
エチレン−α−オレフィン共重合体(出光石油化学製 モアテック 0138N)(同上)75.5グラムに、スリップ剤(出光石油化学製 EB43)0.1グラム及びアンチブロッキング剤0.2グラムを低密度ポリエチレン12.5グラムに溶かしたものを添加して樹脂成分とし、そこへ、白色顔料として二酸化チタン11.3 グラム及び黒色顔料としてファーネスカーボンブラック0.4グラムを加えた。これをインフレーション成形して、厚さ16μmの灰色系フィルムを得た。
(3)シール層用フィルムの作成
エチレン−α−オレフィン共重合体(出光石油化学製 モアテック 0138N)(同上)99.0グラムに、スリップ剤(出光石油化学製 EB43)0.1グラム及びアンチブロッキング剤0.2グラムを低密度ポリエチレン0.7グラムに溶かしたものを添加し、これをインフレーション成形して、厚さ8μmのシール層用フィルムを得た。
(4)食品包装用積層フィルムの作成
上記(1)〜(3)で得た各フィルムを共押出成形により、乳白色系フィルム−灰色系フィルム−シール層用フィルムの順に積層した積層フィルムを得た。
積層フィルムの厚さは40μmであった。
【0021】
食品包装用フィルムとして、外観にすぐれ、遮光性も極めて良好であった。
【0022】
【発明の効果】
本発明においては、遮光性及び美観性に優れた食品包装用フィルムを低コストで提供することができた。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a laminated film for food packaging, and more specifically, a milk packaging film and a gray film, and optionally a laminated film for food packaging in which a film layer made of an ethylene-α-olefin copolymer is laminated. the film.
[0002]
[Prior art]
A laminated film for food packaging, particularly a laminated film for frozen food packaging, is usually required to have a light-shielding property in order to prevent deterioration of the oil used as the contents, particularly fried foods, and the consumer's purchasing desire. A certain degree of aesthetics is also required from the meaning of arousing.
[0003]
Conventionally, a film obtained by laminating a polyethylene terephthalate film or the like on a resin film such as polyethylene vapor-deposited with aluminum has been used to satisfy such demands, which satisfies light shielding properties and aesthetics.
However, in the production of resin films such as polyethylene deposited with aluminum, there is a problem that an expensive aluminum vacuum deposition apparatus is required and the production of the film is costly. It is not preferable from the viewpoint of hygiene to touch the surface, and in order to seal it, a film must be further laminated on the inside of the aluminum vapor-deposited film, leading to an increase in the cost of the product.
[0004]
[Problems to be solved by the invention]
The present invention has been made from the above viewpoint, and an object of the present invention is to provide a food packaging film excellent in light-shielding properties and aesthetics at low cost without using the above aluminum vapor deposition film.
[0005]
[Means for Solving the Problems]
As a result of extensive research, the present inventors have found that a milky white film containing a specific amount of a white pigment, a gray film containing specific amounts of a black pigment and a white pigment, and, if necessary, an ethylene-α-olefin. It has been found that the above object can be achieved by a laminated film for food packaging in which a film layer made of a copolymer is laminated. The present invention has been completed based on such findings.
[0006]
That is, this invention provides the following laminated films for food packaging.
(1) A milky white film having a white pigment content of 5 to 20% by weight and a thickness of 10 μm or more; a black pigment content of 0.2 to 1.0% by weight; and the black color In the laminated film for food packaging formed by laminating a white film containing a white pigment at a weight ratio of 20 to 60 with respect to the pigment 1 and having a thickness of 10 μm or more , the outer surface is a milky white film. A laminated film for packaging foods .
(2) A laminated film for food packaging in which a film layer made of an ethylene-α-olefin copolymer is laminated on the gray film side of the laminated film for food packaging described in (1) above.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be specifically described.
1. Contents of each film layer constituting the laminated film (1) Milky white film layer (1) The resin used is not particularly limited, but is a linear low density polyethylene (LLDPE) made of an ethylene-α-olefin copolymer, It is appropriately selected from thermoplastic resins such as high pressure method low density polyethylene (LDPE), medium density polyethylene, polypropylene, polyamide and polyester. Among these, an ethylene-α-olefin copolymer is preferably used because high strength can be obtained. In this case, as the α-olefin, butene-1, hexene, 4-methyl-1-pentene, isohexane, octene and the like are preferable.
[0008]
Moreover, you may mix | blend a heat stabilizer, a deodorizing agent, an antibacterial agent, an antiblocking agent, a slip agent, etc. with respect to the said thermoplastic resin as needed.
(2) The milky white film layer must contain a white pigment. The white pigment to be used is not particularly limited, and examples thereof include titanium dioxide, zinc oxide (zinc white), zinc sulfide, barium sulfate, and lead white. Among these, titanium dioxide is preferably used because of its fine particle size, excellent whiteness, hiding power, and coloring power, and excellent light resistance, heat resistance, and chemical resistance.
[0009]
The content of the white pigment is 5 to 30% by weight, preferably 10 to 15% by weight. If it is less than 5% by weight, the color of the outer surface becomes gray due to the influence of the black colored layer, the aesthetics deteriorate, and at the same time, the light shielding property also deteriorates and the contents may be oxidized. On the other hand, when it exceeds 30% by weight, the melt-kneading property of the resin is extremely lowered during the production of the film, and there is a possibility that color unevenness occurs.
[0010]
(3) The method for producing the milky white film is not particularly limited, and a known extrusion molding method such as an inflation molding method or a T-die molding may be used.
(2) Gray film layer (1) The resin used is not particularly limited, but is a linear low-density polyethylene (LLDPE) made of an ethylene-α-olefin copolymer, a high-pressure low-density polyethylene (LDPE), It is appropriately selected from thermoplastic resins such as density polyethylene, polypropylene, polyamide, and polyester. Among them, an ethylene-α-olefin copolymer is preferably used because high strength can be obtained. In this case, as the α-olefin, butene-1, hexene, 4-methyl-1-pentene, isohexane, octene and the like are preferable.
[0011]
Moreover, you may mix | blend a heat stabilizer, a deodorizing agent, an antibacterial agent, an antiblocking agent, a slip agent, etc. with respect to the said thermoplastic resin as needed.
(2) The gray film layer must contain a black pigment and a white pigment. The black pigment to be used is not particularly limited, and examples thereof include carbon black, iron black, graphite, etc. Among them, carbon black is preferably used because it has excellent hiding power and coloring power and is inexpensive. . Further, the particle size is not particularly limited, but when furnace carbon black is used, a particle size in the range of 0.03 to 0.04 μm is usually used.
[0012]
The content of the black pigment is 0.2 to 1.0% by weight, preferably 0.3 to 0.7% by weight. If it is less than 0.2% by weight, sufficient light shielding properties cannot be obtained, and the contents may be oxidized. If it exceeds 1.0% by weight, the color of the outer surface becomes gray and the aesthetics may deteriorate. Furthermore, it is necessary that the white pigment is contained in a weight ratio of 20 to 60, preferably 25 to 50 with respect to the black pigment 1. If it is less than 20, the color of the outer surface becomes gray and the aesthetics deteriorate, and if it exceeds 60, there may be a problem that the pigment cannot be mixed uniformly.
[0013]
(3) The production method of the gray film is not particularly limited, and a known extrusion method such as inflation molding or T-die molding may be used.
2. Laminated film for food packaging (1) In the case of a laminated film obtained by laminating the milky white film and the gray film (1) The total thickness of the laminated film for food packaging is 30 μm or more. preferable. When this thickness is less than 30 μm, the strength is insufficient and the film is easily broken. About an upper limit, what is necessary is just to select suitably according to the objective.
[0014]
(2) The thickness of the milky white film layer is 10 μm or more, preferably 15 μm or more. When the thickness of the milky white film layer is less than 10 μm, it may be inferior in aesthetics, and coextrusion may be difficult when forming a laminated film.
(3) The thickness of the gray film layer is 10 μm or more, preferably 15 μm or more. When the thickness of the milky white film layer is less than 10 μm, the light shielding property may be insufficient, and the coextrusion at the time of preparing the laminated film may be difficult.
[0015]
(4) The ratio between the thickness of the milky white film layer and the thickness of the gray film layer is not particularly limited. What is necessary is just to select suitably according to the objective.
(5) The lamination method of the milky white film and the gray film is not particularly limited, and is a known extrusion lamination, for example, an extrusion lamination in which a gray film resin is directly melt-extruded and bonded onto a milky white film substrate. Both economically and economically.
[0016]
(6) Furthermore, a resin layer made of polyamide, polyethylene terephthalate, or the like may be laminated on the outside of the milky white film. Printing may be performed on the back side of these resin layers, that is, the side in contact with the milky white film.
(2) When the film layer which consists of an ethylene-alpha-olefin copolymer is laminated | stacked on the gray type film side in the laminated film for food packaging as described in said (1).
[0017]
(1) The film layer made of the ethylene-α-olefin copolymer is laminated for the purpose of further improving the sealing property and ensuring the safety to foods to be contacted. It is necessary to be laminated on the gray film side of the film.
(2) The ethylene-α-olefin copolymer is not particularly limited, but it has a density of 0.860 to 0.935, an MI (melt index) of 0.5 to 7.0, and is a comonomer α. -Examples of olefins include butene-1, hexene, 4-methyl-1-pentene, isohexane, octene and the like.
[0018]
(3) The method for laminating the laminated film for food packaging described in (1) above and the ethylene-α-olefin copolymer resin film is not particularly limited, and may be a known extrusion lamination, for example, as described in (1) above. An extrusion laminate in which the linear low-density polyethylene resin film is directly melt-extruded and bonded onto a laminated film base material for food packaging is preferable in terms of both process and cost.
[0019]
(4) Furthermore, a resin layer made of polyamide, polyethylene terephthalate or the like may be laminated on the outside of the milky white film. Printing may be performed on the back side of these resin layers, that is, the side in contact with the milky white film.
[0020]
【Example】
EXAMPLES Next, although an Example demonstrates this invention further in detail, this invention is not limited by these examples.
〔Example〕
(1) Preparation of milky white film Slip to 79.2 grams of ethylene-α-olefin copolymer (Mortec 0138N, manufactured by Idemitsu Petrochemical Co., Ltd.) (ethylene-α-olefin copolymer in which α-olefin is 1-octene) Agent (Idemitsu Petrochemical's EB43) 0.1 gram and anti-blocking agent 0.2 gram dissolved in 8.6 gram of low-density polyethylene was added to make a resin component. Added 9 grams. This was subjected to inflation molding to obtain a milky white film having a thickness of 16 μm.
(2) Preparation of gray film Ethylene-α-olefin copolymer (Madetec 0138N made by Idemitsu Petrochemical Co., Ltd.) (Same as above) A resin component was prepared by dissolving 0.2 grams in 12.5 grams of low density polyethylene, and 11.3 grams of titanium dioxide as a white pigment and 0.4 grams of furnace carbon black as a black pigment were added thereto. . This was blown to obtain a gray film having a thickness of 16 μm.
(3) Preparation of seal layer film Ethylene-α-olefin copolymer (Idemitsu Petrochemical's MORETECH 0138N) (same as above) 99.0 grams, slip agent (Idemitsu Petrochemical's EB43) 0.1 grams and anti-blocking A solution obtained by dissolving 0.2 gram of the agent in 0.7 gram of low density polyethylene was added, and this was subjected to inflation molding to obtain a film for a sealing layer having a thickness of 8 μm.
(4) Preparation of laminated film for food packaging Each film obtained in the above (1) to (3) was coextruded to obtain a laminated film in which a milky white film, a gray film, and a seal layer film were laminated in this order. .
The thickness of the laminated film was 40 μm.
[0021]
As a food packaging film, it had excellent appearance and extremely good light shielding properties.
[0022]
【The invention's effect】
In this invention, the film for food packaging excellent in light-shielding property and aesthetics could be provided at low cost.
Claims (2)
外面を乳白色系フィルムとすることを特徴とする食品包装用積層フィルム。A milky white film having a white pigment content of 5 to 20% by weight and a thickness of 10 μm or more; a black pigment content of 0.2 to 1.0% by weight; On the other hand, in a laminated film for food packaging formed by laminating a gray film having a thickness of 10 μm or more, containing a white pigment at a weight ratio of 20 to 60 ,
A laminated film for food packaging, characterized in that the outer surface is a milky white film .
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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JP25696097A JP3796331B2 (en) | 1997-09-22 | 1997-09-22 | Laminated film for food packaging |
Applications Claiming Priority (1)
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JP25696097A JP3796331B2 (en) | 1997-09-22 | 1997-09-22 | Laminated film for food packaging |
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JPH1191042A JPH1191042A (en) | 1999-04-06 |
JP3796331B2 true JP3796331B2 (en) | 2006-07-12 |
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JP25696097A Expired - Fee Related JP3796331B2 (en) | 1997-09-22 | 1997-09-22 | Laminated film for food packaging |
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Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
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FI114218B (en) * | 2000-04-10 | 2004-09-15 | Borealis Polymers Oy | Use of a polymer-based composition |
FI112048B (en) * | 2000-04-10 | 2003-10-31 | Stora Enso Oyj | Laminated heat sealable packaging material, food packaging formed therefrom and packaging method |
JP2005231041A (en) * | 2004-02-17 | 2005-09-02 | Dainippon Printing Co Ltd | Multilayered laminated film |
JP4957698B2 (en) * | 2008-10-17 | 2012-06-20 | 大日本印刷株式会社 | Manufacturing method for packaging bags |
KR101091267B1 (en) * | 2010-08-05 | 2011-12-07 | 씨제이제일제당 (주) | Container for storing food |
JP6155601B2 (en) * | 2012-11-09 | 2017-07-05 | 大日本印刷株式会社 | Packaging materials and packaging containers |
JP6315358B2 (en) * | 2017-02-28 | 2018-04-25 | 大日本印刷株式会社 | Packaging materials and packaging containers |
CN111449485A (en) * | 2019-01-18 | 2020-07-28 | 武汉苏泊尔炊具有限公司 | Non-stick utensil |
EP3683330A1 (en) | 2019-01-18 | 2020-07-22 | Wuhan Supor Cookware Co., Ltd. | Nonstick utensil and manufacturing method thereof |
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1997
- 1997-09-22 JP JP25696097A patent/JP3796331B2/en not_active Expired - Fee Related
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