JP7372985B2 - 殺菌処理用の包装容器 - Google Patents
殺菌処理用の包装容器 Download PDFInfo
- Publication number
- JP7372985B2 JP7372985B2 JP2021564059A JP2021564059A JP7372985B2 JP 7372985 B2 JP7372985 B2 JP 7372985B2 JP 2021564059 A JP2021564059 A JP 2021564059A JP 2021564059 A JP2021564059 A JP 2021564059A JP 7372985 B2 JP7372985 B2 JP 7372985B2
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- JP
- Japan
- Prior art keywords
- flange
- packaging container
- lid member
- flange portion
- area
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Images
Classifications
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- 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
- B65D81/00—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents
- B65D81/18—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents providing specific environment for contents, e.g. temperature above or below ambient
- B65D81/20—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents providing specific environment for contents, e.g. temperature above or below ambient under vacuum or superatmospheric pressure, or in a special atmosphere, e.g. of inert gas
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B65D81/00—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents
- B65D81/18—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents providing specific environment for contents, e.g. temperature above or below ambient
- B65D81/20—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents providing specific environment for contents, e.g. temperature above or below ambient under vacuum or superatmospheric pressure, or in a special atmosphere, e.g. of inert gas
- B65D81/2069—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents providing specific environment for contents, e.g. temperature above or below ambient under vacuum or superatmospheric pressure, or in a special atmosphere, e.g. of inert gas in a special atmosphere
- B65D81/2076—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents providing specific environment for contents, e.g. temperature above or below ambient under vacuum or superatmospheric pressure, or in a special atmosphere, e.g. of inert gas in a special atmosphere in an at least partially rigid container
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B65D1/00—Containers having bodies formed in one piece, e.g. by casting metallic material, by moulding plastics, by blowing vitreous material, by throwing ceramic material, by moulding pulped fibrous material, by deep-drawing operations performed on sheet material
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B65D43/02—Removable lids or covers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
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- B65D77/10—Container closures formed after filling
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
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- B65D81/00—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents
- B65D81/24—Adaptations for preventing deterioration or decay of contents; Applications to the container or packaging material of food preservatives, fungicides, pesticides or animal repellants
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Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Food Science & Technology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Pest Control & Pesticides (AREA)
- Ceramic Engineering (AREA)
- Packages (AREA)
Description
EVOHは、例えば、エチレン-ビニルエステル共重合体をケン化することにより得ることができる。エチレン-ビニルエステル共重合体の製造およびケン化は、公知の方法により行うことができる。当該方法に用いることができるビニルエステルとしては、酢酸ビニル、ギ酸ビニル、プロピオン酸ビニル、ピバリン酸ビニル、およびバーサティック酸ビニル等の脂肪酸ビニルエステルが挙げられる。
リンおよび多価金属元素を含む複合構造体は、リン化合物と多価金属の化合物とが反応することにより形成されるバリア層を有する。この構造体は、リン化合物を含む溶液と多価金属の化合物を含む溶液または分散液とを混合してコーティング剤を調製し、当該コーティング剤を基材上に塗布し、多価金属の化合物とリン化合物とを反応させることにより形成され得る。ここで、上記多価金属原子をMで表すと、多価金属原子Mとリン原子との間にはM-O-Pで表される結合が形成される。M-O-P結合は赤外吸収スペクトルにおける特性吸収帯が1080cm-1~1130cm-1の領域に観察することができ、当該複合構造体の赤外吸収スペクトルにおいて、800cm-1~1400cm-1の領域における最大吸収波数は1080cm-1~1130cm-1の範囲にあることが好ましい。複合構造体の最大吸収波数が上記範囲内にあると、当該複合構造体は優れた酸素バリア性を有する傾向にある。
加工デンプンの原料となるデンプンとしては特に限定されず、例えば、コムギ、トウモロコシ、タピオカ、ジャガイモ、コメ、エンバク、アロールート、およびエンドウ原料に由来するものが挙げられる。デンプンとしては、ハイアミロースデンプンが好ましく、ハイアミローストウモロコシデンプン、およびハイアミロースタピオカデンプンがより好ましい。
無機層状化合物を含むバリア層は、例えば熱可塑性樹脂中に無機層状化合物が分散していると無機層状化合物に起因するバリア性を発現する層である。無機層状化合物を含むバリア層に用いられる熱可塑性樹脂は特に限定されず、例えばポリアミド、エチレン-ビニルアルコール共重合体等が挙げられる。
無機蒸着層は、例えば基材上に無機物を蒸着して得られるバリア層である。無機蒸着層を構成し得る基材としては、例えば熱可塑性樹脂、熱硬化性樹脂等の樹脂;布帛、紙類等の繊維集合体;木材;ガラス等が挙げられる。熱可塑性樹脂および繊維集合体が好ましく、熱可塑性樹脂がより好ましい。基材が上記樹脂で構成される場合、その形態は、フィルムまたはシート等の層状を有していることが好ましい。
金属箔は、展延性に優れた金属から構成される単層または複層の構造体である。金属箔に含まれる金属としては、例えばアルミニウムが挙げられる。当該金属箔は、例えばアルミ箔またはアルミテープの形態を有する。
Claims (14)
- 内部に収容された内容物を殺菌用ガスに晒すことで殺菌し、その後該内容物を封止して流通させるための殺菌処理用の包装容器であって、
上方に開口を有し且つ内容物を収容する収容部と、前記収容部の開口縁から外向きに延びるフランジ部と、を含む容器本体を備え、
前記フランジ部は、
前記開口を覆う蓋部材と一次シール工程において一次シールされる一次シール領域と、
前記蓋部材と一次シール工程の後の二次シール工程において二次シールされることで内容物が完全に封止される二次シール領域と、
上面において該フランジ部の上面のうち最も上方に位置するフランジ最上部と、
上面において該フランジ最上部の上面よりも下方に位置するフランジ下部と、
前記一次シール領域よりも内側に位置し前記フランジ部を貫通する貫通孔が設けられる少なくとも1つの貫通領域と、を有し、且つ、
前記蓋部材と前記一次シール領域とがシールされた際に、前記フランジ最上部によって支持された前記蓋部材と前記フランジ下部との間に前記収容部内の空気を外部に脱気可能であり且つ外部から前記収容部内に前記殺菌用ガスが流入可能な流通路が形成され、前記収容部内を脱気する間も、前記収容部内に前記殺菌用ガスを流入させる間も、前記流通路が開放状態で維持され、前記蓋部材と前記二次シール領域とがシールされた際に、前記流通路が閉塞されるように構成されている、ことを特徴とする包装容器。 - 前記貫通孔は、前記貫通領域の一部に裂け目が形成されることにより形成される、請求項1に記載の包装容器。
- 前記貫通領域は、上方に向けて膨出した湾曲面を有しており、
前記湾曲面の上端が、前記フランジ最上部を構成している、請求項2に記載の包装容器。 - 前記貫通領域は、下方に凹んだ凹部であり、前記裂け目が該凹部内に形成される、請求項2に記載の包装容器。
- 前記フランジ部が、前記収容部の開口縁の全周に設けられ、
前記貫通領域は複数設けられるとともに、前記収容部を挟む対向位置に配置されている、請求項1~請求項4のいずれか1項に記載の包装容器。 - 内部に収容された内容物を殺菌用ガスに晒すことで殺菌し、その後該内容物を封止して流通させるための包装容器であって、
上方に開口を有し且つ内容物を収容する収容部と、前記収容部の開口縁から外向きに延びるフランジ部と、を含む容器本体を備え、
前記フランジ部は、
前記開口を覆う蓋部材と一次シール工程において一次シールされる一次シール領域と、
前記蓋部材と一次シール工程の後の二次シール工程において二次シールされる二次シール領域とを有し、且つ、
前記蓋部材と前記一次シール領域とがシールされた際に、前記蓋部材との間に前記収容部内の空気を外部に脱気可能であり且つ外部から前記収容部内に前記殺菌用ガスが流入可能な流通路が形成され、前記収容部内を脱気する間も、前記収容部内に前記殺菌用ガスを流入させる間も、前記流通路が開放状態で維持され、前記蓋部材と前記二次シール領域とがシールされた際に、前記流通路が閉塞されるように構成され、
前記フランジ部には、前記一次シール領域よりも内側に前記フランジ部を貫通した少なくとも1つの貫通孔が設けられ、
前記貫通孔が、前記流通路の一部となるように構成されている、ことを特徴とする包装容器。 - 前記貫通孔は、前記フランジ部の一部に裂け目が形成されることにより形成されている、請求項6に記載の包装容器。
- 前記フランジ部は、前記裂け目を境界として前記フランジ部の一部が上方に向けて変形されることによって形成されるフランジ最上部を有し、
該フランジ最上部により支持される前記蓋部材と前記フランジ部との間に前記流通路が形成される、請求項7に記載の包装容器。 - 前記上方に向けて変形される前記フランジ部の一部が、上方に向けて膨出した湾曲面を有する、請求項8に記載の包装容器。
- 前記フランジ部は、上面において該フランジ部の上面のうち最も上方に位置するフランジ最上部を有し、
該フランジ最上部により支持される前記蓋部材と前記フランジ部との間に前記流通路が形成される、請求項6又は請求項7に記載の包装容器。 - 前記フランジ部が、前記収容部の開口縁の全周に設けられ、
前記貫通孔は複数設けられるとともに、前記収容部を挟む対向位置に配置されている、請求項6~請求項10のいずれか1項に記載の包装容器。 - 前記一次シール領域の上面は、前記フランジ部の上面のうち最も上方に位置し、
前記二次シール領域の上面は、前記一次シール領域の上面よりも下方に位置し、
前記フランジ部は、前記蓋部材と前記一次シール領域とがシールされた際に、前記二次シール領域の上面と前記蓋部材の下面との間に隙間が形成されるように構成され、
前記隙間が、前記流通路の一部となるように構成されている、請求項6に記載の包装容器。 - 前記収容部は、内容物が載置される底板を含み、
前記底板の上面は、凹凸形状を有する、請求項1~請求項12いずれか1項に記載の包装容器。 - 請求項1~請求項13のいずれか1項に記載の包装容器は、さらに蓋部材を備え、
前記容器本体及び前記蓋部材は、少なくとも一層のガスバリア層を含む多層構造体から構成されている、包装容器。
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