TWI641542B - Microwave storage container - Google Patents
Microwave storage container Download PDFInfo
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- TWI641542B TWI641542B TW104106980A TW104106980A TWI641542B TW I641542 B TWI641542 B TW I641542B TW 104106980 A TW104106980 A TW 104106980A TW 104106980 A TW104106980 A TW 104106980A TW I641542 B TWI641542 B TW I641542B
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- flange portion
- container
- lid member
- inner container
- microwave oven
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Classifications
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- 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
- 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
- B65D81/34—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 for packaging foodstuffs or other articles intended to be cooked or heated within the package
- B65D81/3446—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 for packaging foodstuffs or other articles intended to be cooked or heated within the package specially adapted to be heated by microwaves
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
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- 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
- 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
- B65D1/22—Boxes or like containers with side walls of substantial depth for enclosing contents
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W90/00—Enabling technologies or technologies with a potential or indirect contribution to greenhouse gas [GHG] emissions mitigation
- Y02W90/10—Bio-packaging, e.g. packing containers made from renewable resources or bio-plastics
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Food Science & Technology (AREA)
- Ceramic Engineering (AREA)
- Package Specialized In Special Use (AREA)
- Cookers (AREA)
Abstract
本發明之目的在於提供一種操作簡單且便利性高的微波爐用保存容器。 An object of the present invention is to provide a storage container for a microwave oven which is simple in operation and high in convenience.
本發明之微波爐用保存容器,其特徵為包含:內側容器2,由在金屬箔25的雙面層積有樹脂層26、27的層積體所構成,且上端具有開口部;及樹脂製的外側容器1,與內側容器2的外側重合而成一體,且上端具有開口部。在外側容器1的上端開口部邊緣,形成有朝向外側突出的長大凸緣部12。在內側容器2的上端開口部邊緣,形成有朝向外側突出且與該長大凸緣部12頂面重合而成一體的短小凸緣部22。短小凸緣部22的外周邊緣,配置於比長大凸緣部12的外周邊緣更內側的位置。 A storage container for a microwave oven according to the present invention, comprising: an inner container 2 comprising a laminate in which resin layers 26 and 27 are laminated on both surfaces of a metal foil 25, and having an opening at an upper end; and a resin The outer container 1 is integrally formed to overlap the outer side of the inner container 2, and has an opening at the upper end. A long flange portion 12 that protrudes outward is formed on the edge of the upper end opening of the outer container 1. A short flange portion 22 that protrudes outward and is integrated with the top surface of the elongated flange portion 12 is formed on the edge of the upper end opening of the inner container 2. The outer peripheral edge of the short flange portion 22 is disposed at a position further inside than the outer peripheral edge of the elongated flange portion 12.
Description
本發明係關於一種用於存放咖哩、燉煮食物及焗烤等已烹調食品的微波爐用保存容器,更詳細而言,係關於一種為了能在常溫下長時間保存食品而可加熱加壓殺菌,並具有對於氧氣及水蒸氣等的阻隔性,且在用微波爐加熱、烹調時可防止火花產生的微波爐用保存容器。 The present invention relates to a storage container for a microwave oven for storing cooked foods such as curry, stewed food, and grilled meat. More specifically, it relates to a heat sterilization process for storing foods at a normal temperature for a long time. In addition, it has a barrier to oxygen, water vapor, and the like, and is a storage container for a microwave oven that prevents sparking when heated in a microwave oven and cooked.
作為在常溫流通下保存期間為3個月以上的食品保存用容器,一般係可加熱加壓殺菌的罐頭類金屬容器,或是賦予氣體阻隔性的塑膠製托盤容器等。 The food storage container which is stored for three months or more during the storage at normal temperature is generally a canned metal container which can be heated and pressurized, or a plastic tray container which imparts gas barrier properties.
前者的金屬容器,在用微波爐加熱、烹調時,於構成容器的金屬內部蓄積電荷,故因金屬部位的前端尖銳等的容器形狀及容器彼此互相鄰接等位置關係等而產生火花,而具有容器破壞的疑慮,最糟糕的情況下,具有發生微波爐損壞的疑慮。 When the metal container of the former is heated and cooked in a microwave oven, electric charge is accumulated in the metal constituting the container. Therefore, the shape of the container such as the sharp end of the metal portion and the positional relationship between the containers and the like are generated, and sparks are generated. The doubts, in the worst case, have doubts about the occurrence of microwave damage.
又,後者的塑膠製托盤容器,即使是由高阻隔性的樹脂材料所製作,但因很難如金屬罐一般幾乎完全阻斷水蒸氣及氧氣,故保存期間有限。 Further, the plastic tray container of the latter is made of a resin material having a high barrier property, but it is difficult to almost completely block water vapor and oxygen as in a metal can, and thus the storage period is limited.
為了因應此狀況,有人提出下述專利文獻1、2所示的習知例,其係關於具有既定的氣體阻隔性,且可適用藉由微波爐的加熱、烹調的微波爐用容器。 In order to cope with this situation, a conventional example shown in the following Patent Documents 1 and 2 is proposed, which is a container for a microwave oven which has a predetermined gas barrier property and can be applied by heating and cooking in a microwave oven.
專利文獻1所示的微波爐用容器,由紙製的外盒,及收納於該盒內的金屬容器所構成,並以可取下金屬容器的蓋材後再放回盒內用微波爐加熱的方式所構成。 The container for a microwave oven disclosed in Patent Document 1 is composed of a paper outer case and a metal container housed in the case, and is placed in a microwave oven by removing the cover material of the metal container and then returning it to the inside of the case. Composition.
專利文獻2所示的微波爐用容器,係由組合金屬材料與塑膠材料(樹脂材料)的層積體(複合材料)所構成,並且於底面中央設有特殊構成的防火花構件。 The container for a microwave oven disclosed in Patent Document 2 is composed of a laminate (composite material) of a composite metal material and a plastic material (resin material), and a fireproof member having a special structure is provided at the center of the bottom surface.
[專利文獻1]日本特開昭63-191779號公報 [Patent Document 1] JP-A-63-191779
[專利文獻2]日本特開2006-131270號公報 [Patent Document 2] Japanese Patent Laid-Open Publication No. 2006-131270
然而,上述專利文獻1所示之以往的微波爐用容器,需要將從紙製外盒取出之金屬容器的蓋材打開後再放回紙製外盒這樣繁雜的步驟,而具有操作不方便這樣的問題。 However, the conventional microwave oven container shown in the above-mentioned Patent Document 1 requires a complicated step of opening the lid member of the metal container taken out from the paper outer casing and then returning it to the paper outer casing, which is inconvenient in operation. problem.
此外,上述專利文獻1、2的任一種的微波爐用容器中,在以微波爐加熱時,亦具有在容器彼此互相鄰接的情況、及接近微波爐內的壁面的情況下等因位置關係而產生火花的疑慮。因此,為了防止火花產生,以使容器不抵接於微波爐內的內壁的方式進行配置,或以使容器不彼此接觸的方式進行配置等,需要對配置方式進行考量及花費工夫,在此觀點上,亦存在操作性不佳的問題。 Further, in the microwave oven container according to any one of the above-mentioned Patent Documents 1 and 2, when the container is heated in a microwave oven, sparks may occur due to the positional relationship when the containers are adjacent to each other and when the wall surface of the microwave oven is approached. doubt. Therefore, in order to prevent the occurrence of sparks, such that the containers are not placed in contact with the inner wall of the microwave oven, or are arranged such that the containers are not in contact with each other, it is necessary to consider the arrangement and time. There are also problems with poor operability.
此外,上述專利文獻1、2等以往的微波爐用容器,現狀是重 點在於防止在微波爐內產生火花,而如金屬罐等金屬容器一般,對於謀求提高用於長期保存食品的氣體阻隔性並無充分考量。 Further, in the conventional microwave oven containers such as Patent Documents 1 and 2, the current situation is heavy. The point is to prevent the occurrence of sparks in the microwave oven, and in general, metal containers such as metal cans are not sufficiently considered for improving the gas barrier properties for long-term preservation of foods.
本發明係鑒於上述課題而完成者,目的在於提供一種微波爐用保存容器,其具備高氣體阻隔性而可長期保存內容物,且在微波爐加熱、烹調時亦可防止火花產生,更進一步,其操作簡單且便利性高。 The present invention has been made in view of the above problems, and an object of the invention is to provide a storage container for a microwave oven which has high gas barrier properties and can store contents for a long period of time, and can prevent spark generation during heating and cooking in a microwave oven, and further, the operation thereof Simple and convenient.
藉由以下較佳實施方式,可明確瞭解本發明之其他目的及優點。 Other objects and advantages of the present invention will become apparent from the following description.
為了解決上述課題,本發明具備以下手段。 In order to solve the above problems, the present invention has the following means.
[1]一種微波爐用保存容器,其特徵為包含:內側容器,由在金屬箔的雙面層積有樹脂層的層積體構成,且上端具有開口部;及樹脂製的外側容器,與該內側容器的外側重合而成一體,且上端具有開口部,在該外側容器的上端開口部邊緣,形成有朝向外側突出的長大凸緣部,並且在該內側容器的上端開口部邊緣,形成有朝向外側突出且重疊於該長大凸緣部頂面而成一體的短小凸緣部,該短小凸緣部的外周邊緣,配置於比該長大凸緣部的外周邊緣更內側的位置。 [1] A storage container for a microwave oven, comprising: an inner container comprising a laminate in which a resin layer is laminated on both sides of a metal foil, and having an opening at an upper end; and an outer container made of resin; The outer side of the inner container is integrally formed, and has an opening at the upper end, and an elongated flange portion that protrudes outward is formed at an edge of the upper end opening of the outer container, and an edge is formed at an edge of the upper end opening of the inner container. A short flange portion that is protruded outward and superposed on the top surface of the elongated flange portion, and an outer peripheral edge of the short flange portion is disposed at a position inside the outer peripheral edge of the elongated flange portion.
[2]如前項[1]之微波爐用保存容器,其中,該短小凸緣部的外周邊緣,配置於該長大凸緣部的外周邊緣向內 0.15mm以上的內側。 [2] The storage container for a microwave oven according to [1], wherein an outer peripheral edge of the short flange portion is disposed inward of an outer peripheral edge of the elongated flange portion. The inside of 0.15mm or more.
[3]一種微波爐用保存容器,其特徵為包含:內側容器,由在金屬箔的雙面層積有樹脂層的層積體構成,且上端具有開口部;及樹脂製的外側容器,與該內側容器的外側重合而成一體,且上端具有開口部,在該外側容器的周圍壁的上端部,藉由向外側擴徑而形成有堆疊(stacking)用階差部,在該內側容器的上端開口部,形成有朝向外側突出且與該堆疊用階差部頂面重合而成一體的短小凸緣部。 [3] A storage container for a microwave oven, comprising: an inner container comprising a laminate in which a resin layer is laminated on both sides of a metal foil, and having an opening at an upper end; and an outer container made of resin; The outer side of the inner container is integrally formed and has an opening at the upper end, and a step portion for stacking is formed at the upper end portion of the peripheral wall of the outer container by expanding the outer side, and the upper end of the inner container is formed at the upper end of the inner container The opening portion is formed with a short flange portion that protrudes outward and is integrated with the top surface of the stack step portion.
[4]如前項[3]之微波爐用保存容器,其中,在該外側容器的上端開口部邊緣,形成有朝向外側突出的長大凸緣部。 [4] The storage container for a microwave oven according to the above [3], wherein a long flange portion that protrudes outward is formed at an edge of an upper end opening of the outer container.
[5]如前項[1]至[4]中任一項之微波爐用保存容器,其中,藉由深引伸成形或拉伸成形對在金屬箔的雙面層積有樹脂層的片狀層積體進行加工,而形成該內側容器。 [5] The storage container for a microwave oven according to any one of [1] to [4] wherein the sheet-like layering of the resin layer is laminated on both sides of the metal foil by deep drawing or drawing. The body is processed to form the inner container.
[6]如前項[1]至[5]中任一項之微波爐用保存容器,其中,將樹脂材料射出至設置於射出成形模具內之該內側容器的底面側,以使其與該內側容器之外側密合成一體,進而形成該外側容器。 [6] The storage container for a microwave oven according to any one of [1], wherein the resin material is ejected to a bottom surface side of the inner container provided in the injection molding die to be in contact with the inner container The outer side is densely integrated to form the outer container.
[7]如前項[1]至[5]中任一項之微波爐用保存容器,其中,藉由真空成形、壓力成形及真空壓力成形的任一種方法,從該內側容器的底面側使樹脂製片材與該內側容器之外側密合成一體,進而形成該外 側容器。 [7] The storage container for a microwave oven according to any one of [1] to [5] wherein the resin is made of resin from the bottom surface side of the inner container by any one of vacuum forming, pressure forming, and vacuum pressure forming. The sheet is densely integrated with the outer side of the inner container to form the outer Side container.
[8]如前項[1]至[7]中任一項之微波爐用保存容器,其特徵為:在該內側容器的上端開口部被蓋材封閉的狀態下,藉由熱封合將該蓋材的外周部熔合於該內側容器的短小凸緣部頂面,所述蓋材由於金屬箔之雙面層積有樹脂層的層積體構成。 [8] The storage container for a microwave oven according to any one of [1] to [7] wherein the upper end opening portion of the inner container is closed by a lid member, and the lid is sealed by heat sealing. The outer peripheral portion of the material is fused to the top surface of the short flange portion of the inner container, and the lid member is composed of a laminate in which a resin layer is laminated on both sides of the metal foil.
[9]如前項[8]之微波爐用保存容器,其中,將該蓋材與該短小凸緣部之熱封合部的寬度設定為0.5mm以上。 [9] The storage container for a microwave oven according to the above [8], wherein a width of the heat sealing portion of the lid member and the short flange portion is set to 0.5 mm or more.
[10]如前項[8]或[9]之微波爐用保存容器,其中,熱封合部配置於包含該短小凸緣部之外周端面的位置,在將該蓋材從該內側容器的該短小凸緣部剝離時,因熱封合而熔融之樹脂,以覆蓋該短小凸緣部之外周端面的態樣殘留。 [10] The storage container for a microwave oven according to [8], wherein the heat sealing portion is disposed at a position including an outer peripheral end surface of the short flange portion, and the shortness of the lid member from the inner container When the flange portion is peeled off, the resin which is melted by heat sealing remains in a state of covering the outer peripheral end surface of the short flange portion.
[11]如前項[4]之微波爐用保存容器,其中更包含:蓋材,由在金屬箔的雙面層積有樹脂層的層積體所構成,且在中間部具有凹陷部,在該蓋材的凹陷部與該外側容器之該堆疊用階差部所圍住之部分嵌合的狀態下,藉由熱封合將該蓋材的凹陷部底面外周部熔合於該內側容器的短小凸緣部,並且藉由熱封合將該蓋材的外周緣部熔合於該外側容器的長大凸緣部。 [11] The storage container for a microwave oven according to the above [4], further comprising: a cover member comprising a laminate in which a resin layer is laminated on both sides of the metal foil, and having a depressed portion at an intermediate portion thereof The outer peripheral portion of the bottom surface of the recessed portion of the lid member is fused to the short convex portion of the inner container by heat sealing in a state in which the recessed portion of the lid member is fitted to the portion surrounded by the stacking step portion of the outer container. The edge portion and the outer peripheral edge portion of the lid member are fused to the elongated flange portion of the outer container by heat sealing.
根據發明[1]之微波爐用保存容器,因內側容器係由在金屬箔層積有樹脂層的層積體構成,故可提高氣體阻隔性,亦可適用內容物的長期保存,並且具備良好的導熱性。此外,因樹脂製的外側容器與內側容 器成一體,故具備優異的保形性。更進一步,因包含金屬箔之內側容器的短小凸緣部小於樹脂製的外側容器之長大凸緣部,故無關容器的位置關係,而可充分確保內側容器的金屬箔與微波爐內壁及其他容器的金屬箔等金屬部位的距離,進而可防止火花的產生。 According to the storage container for a microwave oven of the invention [1], since the inner container is composed of a laminate in which a resin layer is laminated on the metal foil, gas barrier properties can be improved, and long-term storage of the content can be applied, and the container can be provided with good properties. Thermal conductivity. In addition, the outer container and the inner side made of resin The device is integrated, so it has excellent shape retention. Furthermore, since the short flange portion of the inner container including the metal foil is smaller than the elongated flange portion of the outer container made of resin, the metal foil of the inner container and the inner wall of the microwave oven and other containers can be sufficiently ensured regardless of the positional relationship of the container. The distance between the metal parts such as the metal foil can prevent the generation of sparks.
根據發明[2]之微波爐用保存容器,可更確實地防止火花的產生。 According to the storage container for a microwave oven of the invention [2], the generation of the spark can be more surely prevented.
根據發明[3][4]之微波爐用保存容器,在堆疊複數微波爐用保存容器時,上側的保存容器底部嵌入下側的保存容器的堆疊用階差部,藉此可在穩定的狀態下進行堆疊。 According to the storage container for a microwave oven of the invention [3] [4], when stacking a plurality of storage containers for a microwave oven, the bottom of the upper storage container is fitted into the stacking step portion of the lower storage container, whereby the storage can be performed in a stable state. Stacking.
根據發明[5]之微波爐用保存容器,可製造其短小凸緣部無皺褶的高品質之內側容器。 According to the storage container for a microwave oven of the invention [5], it is possible to manufacture a high-quality inner container having no wrinkles in the short flange portion.
根據發明[6][7]之微波爐用保存容器,可形成與內側容器確實密合的高品質外側容器。 According to the storage container for a microwave oven of the invention [6] [7], it is possible to form a high-quality outer container which is surely adhered to the inner container.
根據發明[8][9]之微波爐用保存容器,可使容器內確實地密閉,而可長期良好地保存食品等的內容物。 According to the storage container for a microwave oven of the invention [8] [9], the inside of the container can be reliably sealed, and the contents of the food or the like can be stored well for a long period of time.
根據發明[10]之微波爐用保存容器,即使在開封後,亦可確實地防止內側容器的金屬箔露出,而可進一步確實地防止火花的產生。 According to the storage container for a microwave oven of the invention [10], even after the opening, the metal foil of the inner container can be surely prevented from being exposed, and the generation of the spark can be surely prevented.
根據發明[11]之微波爐用保存容器,可使容器內確實地密閉,而可長期良好地保存食品等的內容物。 According to the storage container for a microwave oven of the invention [11], the inside of the container can be reliably sealed, and the contents of the food or the like can be stored well for a long period of time.
1‧‧‧外側容器 1‧‧‧Outside container
2‧‧‧內側容器 2‧‧‧ inside container
3‧‧‧蓋材 3‧‧‧Cleaning
12‧‧‧長大凸緣部 12‧‧‧Large flange
15‧‧‧堆疊用階差部 15‧‧‧Steps for stacking
22‧‧‧短小凸緣部 22‧‧‧Short flange
25‧‧‧金屬箔 25‧‧‧metal foil
26‧‧‧樹脂層 26‧‧‧ resin layer
27‧‧‧樹脂層 27‧‧‧ resin layer
30‧‧‧凹陷部(蓋材凹部) 30‧‧‧Depression (cover recess)
31‧‧‧剝離用凸緣 31‧‧‧ peeling flange
35‧‧‧金屬箔 35‧‧‧metal foil
36‧‧‧樹脂層 36‧‧‧ resin layer
37‧‧‧樹脂層 37‧‧‧ resin layer
41‧‧‧熱封合部 41‧‧‧Heat seal
42‧‧‧熱封合部 42‧‧‧Hot seal
43‧‧‧熱封合部 43‧‧‧Hot seal
251‧‧‧接著劑 251‧‧‧Binder
252‧‧‧接著劑 252‧‧‧Adhesive
351‧‧‧接著劑 351‧‧‧Binder
352‧‧‧接著劑 352‧‧‧Adhesive
411‧‧‧殘留樹脂 411‧‧‧Residual resin
421‧‧‧殘留樹脂 421‧‧‧Residual resin
F‧‧‧內容物 F‧‧‧ contents
第一圖係示意顯示本發明之第一實施方式之微波爐用保存容器的剖面圖。 The first figure is a cross-sectional view showing a storage container for a microwave oven according to a first embodiment of the present invention.
第二圖係示意顯示剝離第一實施方式之微波爐用保存容器之蓋材的狀態的剖面圖。 The second drawing is a cross-sectional view showing a state in which the lid member of the storage container for a microwave oven according to the first embodiment is peeled off.
第三圖係顯示構成第一實施方式之微波爐用保存容器之內側容器的層積體的剖面圖。 The third drawing shows a cross-sectional view of a laminate constituting the inner container of the storage container for a microwave oven according to the first embodiment.
第四圖係顯示構成第一實施方式之微波爐用保存容器之蓋材的層積體的剖面圖。 The fourth drawing is a cross-sectional view showing a laminate of the lid member constituting the storage container for a microwave oven according to the first embodiment.
第五圖係放大顯示第一圖之微波爐用保存容器之熱封合部周邊的剖面圖。 The fifth drawing is an enlarged cross-sectional view showing the periphery of the heat sealing portion of the storage container for a microwave oven of the first drawing.
第六圖係放大顯示第二圖之微波爐用保存容器之熱封合部周邊的剖面圖。 Fig. 6 is a cross-sectional view showing the periphery of the heat sealing portion of the storage container for a microwave oven of Fig. 2 in an enlarged manner.
第七圖係示意顯示本發明之第二實施方式之微波爐用保存容器的剖面圖。 Fig. 7 is a cross-sectional view schematically showing a storage container for a microwave oven according to a second embodiment of the present invention.
第八圖係示意顯示將第二實施方式之微波爐用保存容器之蓋材剝離之狀態的剖面圖。 The eighth diagram is a cross-sectional view showing a state in which the lid member of the storage container for a microwave oven according to the second embodiment is peeled off.
第九圖係放大顯示第七圖之微波爐用保存容器之熱封合部周邊的剖面圖。 The ninth drawing is an enlarged cross-sectional view showing the periphery of the heat sealing portion of the storage container for a microwave oven of the seventh drawing.
第十圖係放大顯示第八圖之微波爐用保存容器之熱封合部周邊的剖面圖。 Fig. 10 is an enlarged cross-sectional view showing the vicinity of a heat sealing portion of the storage container for a microwave oven of the eighth drawing.
第一圖係示意顯示本發明之第一實施方式之微波爐用保存容器的剖面圖,第二圖係示意顯示剝離蓋材的狀態的剖面圖。 The first drawing is a cross-sectional view showing a storage container for a microwave oven according to a first embodiment of the present invention, and the second drawing is a cross-sectional view showing a state in which a cover member is peeled off.
如兩圖所示,本第一實施方式之微波爐用保存容器,係可長期保存作為內容物F存放之咖哩及燉煮食物等已烹調食品的容器;且在必要時,可用微波爐良好地進行加熱、烹調的微波爐適用型容器。 As shown in the two figures, the storage container for a microwave oven according to the first embodiment can store a cooked food such as curry and stewed food stored as the content F for a long period of time; and if necessary, it can be heated well by a microwave oven. The microwave oven for cooking is suitable for containers.
本實施方式之微波爐用保存容器,具備由外側容器1及內側 容器2所構成之雙層容器、及將該雙層容器的上端開口部封閉的蓋材3。 The storage container for a microwave oven according to the present embodiment includes the outer container 1 and the inner side A double-layered container composed of the container 2 and a lid member 3 that closes the upper end opening of the double-layered container.
外側容器1及內側容器2皆分別在上端具有開口部,外側容器1與內側容器2的外側(下側)重合並密合成一體。 Each of the outer container 1 and the inner container 2 has an opening at the upper end, and the outer container 1 and the outer side (lower side) of the inner container 2 are combined and integrated.
在水平方向上往外側突出的凸緣部(長大凸緣部)12,成一體於外側容器1之上端開口部的整個周緣。 The flange portion (elongated flange portion) 12 that protrudes outward in the horizontal direction is integrated with the entire circumference of the upper end opening portion of the outer container 1.
在水平方向上往外突出且與外側容器1的長大凸緣部12頂面密合成一體的凸緣部(短小凸緣部)22,成一體於內側容器2之上端開口部的整個周緣。 A flange portion (short flange portion) 22 that protrudes outward in the horizontal direction and is integrally formed with the top surface of the elongated flange portion 12 of the outer container 1 is integrated with the entire circumference of the upper end opening portion of the inner container 2.
此外,如下所詳述,短小凸緣部22相對於長大凸緣部12朝向外側的突出量較少。 Further, as described in detail below, the amount by which the short flange portion 22 protrudes outward with respect to the elongated flange portion 12 is small.
蓋材3係以大於外側容器1及內側容器2之上端開口部之開口面積的方式形成,在以蓋材3封閉兩容器1、2的上端開口部的狀態下,蓋材3的周緣部與長大凸緣部12及短小凸緣部22,藉由熱封合在熱封合部41的一周上進行熔合而成一體,以使容器1、2的內部密封(封裝)。 The lid member 3 is formed to be larger than the opening area of the upper end opening portion of the outer container 1 and the inner container 2, and the peripheral portion of the lid member 3 is closed in a state where the upper end opening portions of the two containers 1 and 2 are closed by the lid member 3. The elongated flange portion 12 and the short flange portion 22 are integrally sealed by heat sealing on one circumference of the heat sealing portion 41 to seal (encapsulate) the inside of the containers 1 and 2.
此外,蓋材3的外周緣部的一部分,在水平方向(側邊)上延伸設置,而形成剝離用凸緣31,將蓋材3從雙層容器1、2剝離時,用手指將剝離用凸緣31掀起,藉此可輕易將蓋材3從雙層容器1、2剝離。 In addition, a part of the outer peripheral edge portion of the lid member 3 is extended in the horizontal direction (side) to form the peeling flange 31, and when the lid member 3 is peeled off from the double container 1 and 2, the peeling is performed with a finger. The flange 31 is lifted, whereby the lid member 3 can be easily peeled off from the double-layered container 1, 2.
本實施方式中,外側容器1係由樹脂成形品所構成,而不包含金屬箔等的金屬材料。 In the present embodiment, the outer container 1 is made of a resin molded article, and does not include a metal material such as a metal foil.
如第三圖所示,內側容器2係由層積體構成,該層積體具備:金屬箔25;樹脂層(樹脂薄膜)26,係透過接著劑251層積於金屬箔25頂面而成一體;及樹脂層27,係透過接著劑252層積於金屬箔25底面而成一體。 As shown in the third figure, the inner container 2 is composed of a laminate including a metal foil 25 and a resin layer (resin film) 26 which is laminated on the top surface of the metal foil 25 through the adhesive 251. The integral portion and the resin layer 27 are integrally formed by laminating the bottom surface of the metal foil 25 through the adhesive 252.
如第四圖所示,蓋材3係由層積體構成,該層積體具備:金屬箔35;樹脂層(樹脂薄膜)36,係透過接著劑351層積於金屬箔35頂面而成一體;及樹脂層37,係透過接著劑352層積於金屬箔35底面而成一體。 As shown in the fourth figure, the lid member 3 is composed of a laminate including a metal foil 35 and a resin layer (resin film) 36 which is laminated on the top surface of the metal foil 35 through the adhesive 351. The integral portion and the resin layer 37 are integrally formed by laminating the bottom surface of the metal foil 35 through the adhesive 352.
如此,本實施方式之微波爐用保存容器,係由樹脂製的外側容器1,與作為金屬箔25及樹脂層26、27之層積體的內側容器2構成的雙層容器,更進一步,蓋材3亦由金屬箔35及樹脂層36、37之層積體構成,故可耐殺菌釜(Retort)滅菌。因此,本實施方式之微波爐用保存容器,一般在裝入內容物F的狀態下,將其密封並熱壓殺菌後,可在常溫下具有6個月以上的保存期間而使其流通。 In the storage container for a microwave oven of the present embodiment, the outer container 1 made of resin and the double container which is the inner container 2 which is a laminate of the metal foil 25 and the resin layers 26 and 27, further, the cover material 3 is also composed of a laminate of the metal foil 35 and the resin layers 36 and 37, so that it can be sterilized by a Retort. Therefore, the storage container for a microwave oven according to the present embodiment is generally sealed and hot-pressed in a state where the content F is placed, and can be stored at a normal temperature for 6 months or longer.
為了具有這種金屬罐同等的保存性,接觸食品(內容物F)的部分需具有氣體阻隔層,故使雙層容器1、2與蓋材3的熱封合部41,與包含金屬箔25之內側容器2的短小凸緣部22重疊0.5mm以上。此外,若重疊量小於0.5mm,則無法確保內側容器2與蓋材3之間充分的密合面積,根據情況,內容物F透過熱封合部41侵蝕到外側容器1,而變得難以確保金屬罐同等的氣體阻隔性。 In order to have the same storage property of the metal can, the portion contacting the food (content F) needs to have a gas barrier layer, so that the heat seal portion 41 of the double container 1, 2 and the lid member 3, and the metal foil 25 are contained. The short flange portion 22 of the inner container 2 is overlapped by 0.5 mm or more. In addition, when the amount of overlap is less than 0.5 mm, a sufficient adhesion area between the inner container 2 and the lid member 3 cannot be ensured, and depending on the case, the content F is eroded to the outer container 1 through the heat sealing portion 41, and it becomes difficult to ensure Metal cans have the same gas barrier properties.
此外,為了避免包含金屬箔25之內側容器2的短小凸緣部22突出到外側容器1之長大凸緣部12的外側,故將內側容器2的短小凸緣部22的外周邊緣,配置於比外側容器1的長大凸緣部12之外周邊緣向內0.15mm以上的內側。亦即,使內側容器2的短小凸緣部22形成為小於外側容器1之長大凸緣部12的態樣。藉此,在用微波爐加熱、烹調時,不會發生「配置於微波爐內的複數保存容器中,包含金屬箔25的短小凸緣部22、22彼此互相重合」或是「短小凸緣部22接觸微波爐內壁」的情況,而可確實抑制火 花的產生。 Further, in order to prevent the short flange portion 22 of the inner container 2 including the metal foil 25 from protruding to the outside of the elongated flange portion 12 of the outer container 1, the outer peripheral edge of the short flange portion 22 of the inner container 2 is disposed at a ratio The outer peripheral edge of the elongated flange portion 12 of the outer container 1 is inwardly 0.15 mm or more. That is, the short flange portion 22 of the inner container 2 is formed to be smaller than the elongated flange portion 12 of the outer container 1. Therefore, when heating and cooking in a microwave oven, "the short flange portions 22 and 22 including the metal foil 25 are overlapped with each other in the plurality of storage containers placed in the microwave oven" or "the short flange portion 22 is in contact with each other" The inside wall of the microwave oven can actually suppress the fire The production of flowers.
作為外側容器1的材料所使用的樹脂並無特別限定,但考量通用性及樹脂的成本,為聚丙烯(PP)、聚乙烯(PE)等的聚烯烴系樹脂;聚對苯二甲酸乙二酯(PET)或聚對苯二甲酸丁二酯(PBT)等的聚酯系樹脂等熱塑性樹脂較佳。 The resin used as the material of the outer container 1 is not particularly limited, but is a polyolefin resin such as polypropylene (PP) or polyethylene (PE) in consideration of versatility and cost of the resin; polyethylene terephthalate A thermoplastic resin such as a polyester resin such as ester (PET) or polybutylene terephthalate (PBT) is preferred.
外側容器1的製作方法亦並無特別限定,例如,適合採用下述方法:使用射出成形、真空成形、壓力成形或真空壓力成形等,使外側容器1與預先壓製成形之內側容器2密合成一體的方法等。例如,可採用下述方法:將預先壓製成形之內側容器2設置於射出成形機的模具內,再將熱塑性樹脂熔融射出至內側容器2的外部底面,在使外側容器1成形的同時與內側容器2成一體的方法;及加熱樹脂片材,並藉由真空成形、壓力成形、真空壓力成形等,將其壓附於預先壓製成形之內側容器2的底面側(外側)以使其密合而成一體的方法等。 The method for producing the outer container 1 is not particularly limited. For example, it is suitable to use a method in which the outer container 1 and the inner container 2 which is previously press-formed are integrally formed by injection molding, vacuum forming, pressure forming, or vacuum pressure forming. Method etc. For example, a method may be employed in which the inner container 2 which has been previously press-formed is placed in a mold of an injection molding machine, and the thermoplastic resin is melt-ejected to the outer bottom surface of the inner container 2, and the outer container 1 is formed while the inner container is formed. a method of forming an integral body; and heating the resin sheet, and pressing it to the bottom surface side (outer side) of the inner container 2 which is previously press-formed by vacuum forming, pressure forming, vacuum pressure forming, or the like to be in close contact with each other Integral method, etc.
無論如何,使構成外側容器1之樹脂層的厚度為0.15mm~3mm較佳。亦即,若小於0.15mm,則內側容器2所包含的金屬箔25與其他金屬之間的距離變近的可能性變高,而具有產生火花的疑慮。反之,在外側容器1的樹脂厚度超過3mm的情況下,成形的難度提高,成本變高,且容器形狀變大,故為不佳。 In any case, it is preferable that the thickness of the resin layer constituting the outer container 1 is 0.15 mm to 3 mm. In other words, when the thickness is less than 0.15 mm, the distance between the metal foil 25 included in the inner container 2 and the other metal becomes higher, and the spark is generated. On the other hand, when the resin thickness of the outer container 1 exceeds 3 mm, the difficulty in molding increases, the cost becomes high, and the shape of the container becomes large, which is not preferable.
內側容器2如上所述,係使用透過接著劑251、252將作為樹脂層26、27的熱熔融性薄膜等,貼附於金屬箔25雙面的層積體(參照第三圖),而熱熔融性薄膜的材質使用與外側容器1相同的材料較佳。亦即,若外側容器1為聚丙烯製,則內側容器2的樹脂層中,以無延伸聚丙烯薄膜作 為熱熔融性薄膜材料較佳;若外側容器1為聚乙烯製,則以無延伸聚乙烯薄膜作為熱熔融性薄膜材料較佳。 As described above, the inner container 2 is attached to the laminate on both sides of the metal foil 25 by using a heat-fusible film or the like as the resin layers 26 and 27 through the adhesives 251 and 252 (see FIG. 3). The material of the molten film is preferably the same as that of the outer container 1. That is, if the outer container 1 is made of polypropylene, the resin layer of the inner container 2 is made of a non-stretched polypropylene film. It is preferably a heat-meltable film material; and if the outer container 1 is made of polyethylene, a non-stretch polyethylene film is preferably used as the heat-meltable film material.
內側容器2的金屬箔25可使用鋁、銅、鐵等的單體或合金所構成之箔,但其中為經濟性及具有適合壓製成形之機械強度的鋁合金箔較佳。例如,使用以JISH4000分類的軟質的A8079、8021、3003、3004之中任一種較佳,並使厚度為20μm~150μm較佳。亦即,若金屬箔25的厚度小於20μm,則針孔的產生率變高,在形成內側容器2時的壓製成形中亦容易破裂,若超過150μm的情況,則除了與樹脂製的外側容器1成一體時難以導熱之外,成本亦變高,故為不佳。 The metal foil 25 of the inner container 2 may be a foil composed of a single body or an alloy of aluminum, copper, iron, or the like, but an aluminum alloy foil which is economical and has mechanical strength suitable for press forming is preferable. For example, any of soft A8079, 8021, 3003, and 3004 classified by JISH4000 is preferably used, and a thickness of 20 μm to 150 μm is preferable. In other words, when the thickness of the metal foil 25 is less than 20 μm, the rate of occurrence of pinholes is high, and it is easy to be broken during press forming when the inner container 2 is formed. When the thickness exceeds 150 μm, the outer container 1 made of resin is used. When it is difficult to conduct heat when it is integrated, the cost is also high, so it is not good.
關於作為內側容器2之樹脂層26、27的熱熔融性薄膜,亦考量導熱性及成本,設定為20μm~100μm較佳。又,關於接著劑251、252,使用耐加熱加壓殺菌的聚酯聚氨酯系或聚醚聚氨酯系的雙液固化型接著劑較佳,並使塗布量為1~3g/m2較佳。 The heat-fusible film which is the resin layers 26 and 27 of the inner container 2 is preferably 20 μm to 100 μm in consideration of thermal conductivity and cost. Further, as the adhesives 251 and 252, a polyester urethane-based or polyether urethane-based two-liquid curable adhesive which is resistant to heat and pressure sterilization is preferably used, and the coating amount is preferably 1 to 3 g/m 2 .
內側容器2係使用深引伸成形或拉伸成形進行製作。例如,藉由對上述第三圖所示之片狀層積體進行深引伸成形或拉伸成形,製作附有凹部的層積體(成形片材),並將該片材的外周緣部(凸緣部)修剪成適當大小,以形成短小凸緣部22,藉此製作內側容器2。 The inner container 2 is produced by deep drawing or drawing. For example, by performing deep drawing or stretch forming on the sheet-like laminate shown in the third drawing, a laminate (formed sheet) having a concave portion is produced, and the outer peripheral edge portion of the sheet is formed ( The flange portion is trimmed to an appropriate size to form the short flange portion 22, whereby the inner container 2 is fabricated.
此外,藉由深引伸成形及拉伸成形等的壓製加工製作內側容器2的情況下,在沖壓加工時,凸緣部被模具上下束縛,故可確實地防止凸緣部產生皺褶。如此,內側容器2的短小凸緣部22不產生皺褶,故不會與凸緣部22所包含之金屬箔25重合,而可更確實地防止在微波爐加熱、料理時產生火花。 Further, when the inner container 2 is produced by press working such as deep drawing molding or stretch forming, the flange portion is restrained by the upper and lower sides of the mold during press working, so that wrinkles of the flange portion can be reliably prevented. As described above, since the short flange portion 22 of the inner container 2 does not wrinkle, it does not overlap with the metal foil 25 included in the flange portion 22, and it is possible to more reliably prevent sparking during heating and cooking in the microwave oven.
如第四圖所示,假設蓋材3在殺菌後進行常溫流通,該蓋材3為下述構成:將作為樹脂層36的耐熱薄膜透過接著劑351貼附於相對金屬箔35為容器外側(上側)的面上,並且將作為樹脂層37的熱融合薄膜透過接著劑352貼附於相對金屬箔35為容器內側(下側)的面上。金屬箔35適合使用鋁、銅、鐵等單體或合金所構成之箔,但為經濟性及具有適合壓製成形之機械強度的鋁箔較佳。作為金屬箔35的鋁箔,可為以JIS H4000或JIS H4160分類的軟質的A1N30合金或1100等的1000系純鋁,亦可為3000系、8000系的合金箔,但使厚度為20μm~100μm。若厚度小於20μm,則針孔發生率變高,故為不佳。反之,金屬箔的厚度超過100μm的情況下,在熱封合時變得難以導熱,故為不佳。 As shown in the fourth figure, the lid member 3 is configured to flow at a normal temperature after sterilization, and the lid member 3 has a configuration in which a heat-resistant film as the resin layer 36 is adhered to the outer side of the container by the adhesive 351. On the surface of the upper side, the heat fusion film as the resin layer 37 is adhered to the surface of the inner side (lower side) of the container with respect to the metal foil 35 through the adhesive 352. The metal foil 35 is preferably a foil composed of a monomer or an alloy of aluminum, copper, iron, or the like, but is preferably economical and has an aluminum foil suitable for press forming. The aluminum foil of the metal foil 35 may be a soft A1N30 alloy classified according to JIS H4000 or JIS H4160 or a 1000-type pure aluminum such as 1100, or may be an alloy foil of 3000 series or 8000 series, but has a thickness of 20 μm to 100 μm. When the thickness is less than 20 μm, the pinhole occurrence rate is high, which is not preferable. On the other hand, when the thickness of the metal foil exceeds 100 μm, it becomes difficult to conduct heat during heat sealing, which is not preferable.
此外,作為樹脂層36的耐熱薄膜,為通用性高的聚酯薄膜或聚醯胺薄膜較佳,使其皆為9μm~25μm的厚度。更進一步,作為樹脂層37的熱熔融性薄膜使用可加熱加壓殺菌,且開封時易剝離的混合聚乙烯與聚丙烯樹脂而成之易開封性密封劑等通用的薄膜較佳。使作為樹脂層37之熱熔融性薄膜的厚度為20μm~100μm較佳,若考量通用性與成本,則為30μm~50μm更佳。 Further, the heat-resistant film as the resin layer 36 is preferably a highly versatile polyester film or a polyamide film, and has a thickness of 9 μm to 25 μm. Further, as the heat-fusible film of the resin layer 37, a general-purpose film such as an easy-opening sealant which can be heated and pressurized and which is easily peeled off at the time of unsealing and a polypropylene resin can be used. The thickness of the heat-fusible film as the resin layer 37 is preferably 20 μm to 100 μm, and more preferably 30 μm to 50 μm in consideration of versatility and cost.
如第五圖所示,本實施方式中,將蓋材3相對於雙層容器1、2的熱封合部41,配置於包含內側容器2之短小凸緣部22之外周端面的位置,藉此利用在熱封合時熔融之樹脂層37進行調整以將短小凸緣部22之外周端面覆蓋較佳。藉由此構成,將蓋材3從雙層容器1、2剝離時,如第六圖所示,蓋材3的樹脂層37在熱封合時熔融而成的樹脂411,以覆蓋短小凸緣部22之外周端面的方式殘留配置。因此,可防止內側容器2所包含之金屬箔 25從短小凸緣部22的外周端面露出,而可更確實地抑制微波爐加熱、料理時產生火花。 As shown in FIG. 5, in the present embodiment, the lid member 3 is placed on the outer peripheral end surface of the short flange portion 22 of the inner container 2 with respect to the heat sealing portion 41 of the double container 1 and 2, This is preferably adjusted by covering the outer peripheral end surface of the short flange portion 22 with the resin layer 37 which is melted at the time of heat sealing. With this configuration, when the lid member 3 is peeled off from the double-layered container 1 and 2, as shown in FIG. 6, the resin layer 371 of the lid member 3 is melted at the time of heat sealing to cover the short flange. The outer peripheral end surface of the portion 22 remains in a configuration. Therefore, the metal foil contained in the inner container 2 can be prevented 25 is exposed from the outer peripheral end surface of the short flange portion 22, and it is possible to more reliably suppress the occurrence of sparks during heating of the microwave oven and cooking.
第七圖及第八圖係顯示本發明之第二實施方式之微波爐用保存容器的剖面圖。如兩圖所示,該第二實施方式之微波爐用保存容器,於外側容器1的周圍壁的上端部,形成有堆疊用階差部15,而可在穩定狀態下將複數微波爐用保存容器進行堆疊配置。 7 and 8 are cross-sectional views showing a storage container for a microwave oven according to a second embodiment of the present invention. As shown in the two figures, in the storage container for a microwave oven according to the second embodiment, the stacking step portion 15 is formed at the upper end portion of the peripheral wall of the outer container 1, and the plurality of microwave oven storage containers can be used in a stable state. Stack configuration.
亦即,在該第二實施方式之微波爐用保存容器中,於外側容器1的周圍壁的上端部,將其上端部整圈向外側推開的方式進行擴徑,以形成堆疊用階差部15。 In the storage container for a microwave oven according to the second embodiment, the upper end portion of the peripheral wall of the outer container 1 is enlarged in diameter so that the upper end portion thereof is pushed outward to form a step portion for stacking. 15.
更進一步,內側容器2的短小凸緣部22重疊於外側容器1的堆疊用階差部15的水平部頂面並密合成一體。 Further, the short flange portion 22 of the inner container 2 is superposed on the top surface of the horizontal portion of the stack step portion 15 of the outer container 1, and is integrally formed integrally.
此外,如第九圖所示,在蓋材3中,於除了外周緣部以外的中間部,形成凹陷部30,其可與被外側容器1的階差部15所圍住的部分嵌合。該蓋材3的凹陷部30,可與被上述雙層容器1、2之外側容器1的堆疊用階差部15所圍住的部分嵌合,蓋材3的凹陷部(蓋材凹部)30的底面外周緣部設置於內側容器2的短小凸緣部22頂面,且蓋材3的外周緣部設置於外側容器1的長大凸緣部12頂面。 Further, as shown in FIG. 9, in the lid member 3, a recess portion 30 is formed in an intermediate portion other than the outer peripheral edge portion, and is fitted to a portion surrounded by the step portion 15 of the outer container 1. The recessed portion 30 of the lid member 3 is engageable with a portion surrounded by the stack step portion 15 of the outer container 1 of the double container 1 and 2, and the recessed portion (cover recess) 30 of the lid member 3 The outer peripheral edge portion of the bottom surface is provided on the top surface of the short flange portion 22 of the inner container 2, and the outer peripheral edge portion of the lid member 3 is provided on the top surface of the elongated flange portion 12 of the outer container 1.
接著,將蓋材3的凹陷部30的外周緣部與內側容器2的短小凸緣部22重合的區域(熱封合部42)進行熱封合以使其熔合,並且將蓋材3的外周緣部與外側容器1的長大凸緣部12重合的區域(熱封合部43)進行熱封合以使其熔合。 Next, the region (heat sealing portion 42) where the outer peripheral edge portion of the recessed portion 30 of the lid member 3 overlaps with the short flange portion 22 of the inner container 2 is heat-sealed to be fused, and the outer periphery of the lid member 3 is placed. The region where the edge portion overlaps with the elongated flange portion 12 of the outer container 1 (the heat sealing portion 43) is heat-sealed to be fused.
此外,蓋材3係使用深引伸成形或拉伸成形進行製作。例如,對於與上述第一實施方式的蓋材3相同的片狀層積體(參照第四圖等),以深引伸成形或拉伸成形,形成可與被外側容器1之堆疊用階差部15所圍住的部分嵌合的凹陷部30。接著,修剪該附有凹陷部之層積體(成形片材)的外周緣部,形成為既定的大小,以製作附有凹陷部的蓋材3。 Further, the cover member 3 is produced by deep extension molding or stretch forming. For example, the sheet-like laminate (see FIG. 4 and the like) which is the same as the lid member 3 of the above-described first embodiment is formed by deep extension molding or stretch forming to form a step portion 15 which can be stacked with the outer container 1 . A partially fitted recess 30 that is enclosed. Then, the outer peripheral edge portion of the laminate (formed sheet) with the depressed portion is trimmed to have a predetermined size to produce the lid member 3 with the depressed portion.
在該第二實施方式之微波爐用保存容器中,在剝離蓋材3時,如第八圖及第十圖所示,熱封合時熔融的樹脂層37以能覆蓋短小凸緣部22之外周端面的方式,殘留配置於熱封合部42。因此,與上述第一實施方式相同地,藉由殘留樹脂421而可確實地防止內側容器2所包含之金屬箔25從短小凸緣部22的外周端面露出。 In the storage container for a microwave oven according to the second embodiment, when the cover member 3 is peeled off, as shown in FIG. 8 and FIG. 10, the resin layer 37 which is melted at the time of heat sealing can cover the outer periphery of the short flange portion 22. The end face is left in the heat seal portion 42. Therefore, similarly to the above-described first embodiment, the residual resin 421 can reliably prevent the metal foil 25 included in the inner container 2 from being exposed from the outer peripheral end surface of the short flange portion 22.
在該第二實施方式之微波爐用保存容器中,其他構成在實質上與上述第一實施方式之微波爐用保存容器相同,故在同一或對應部分附上同一符號,而省略重複說明。 In the storage container for a microwave oven according to the second embodiment, the other configuration is substantially the same as the storage container for the microwave oven according to the first embodiment, and the same reference numerals will be given to the same or corresponding parts, and the description thereof will not be repeated.
在該第二實施方式之微波爐用保存容器中,亦與上述第一實施方式相同地,可得到同樣的作用效果。 In the storage container for a microwave oven according to the second embodiment, the same operational effects can be obtained as in the first embodiment.
此外,在該第二實施方式中,因為將內側容器2的短小凸緣部22與外側容器1的堆疊用階差部15重合,故外側容器1的長大凸緣部12不存在包含金屬箔的內側容器2,因此剝離蓋材3後,即使將複數雙層容器1、2重疊放置於微波爐爐內,亦不會產生火花。然而,蓋材3必須具有段差且熱封合至內側容器2的短小凸緣部22,故為了使該階差部分密封,如上所述,使用預先壓製成形之蓋材3,在熱封合部42、43處進行熱封合較佳。此外,與上述第一實施方式相同地,使外側容器1之堆疊用階差部15與內側容 器2之短小凸緣部22的密封寬度為0.5mm以上,藉此可使其保持金屬容器同等的氣體阻隔性。 Further, in the second embodiment, since the short flange portion 22 of the inner container 2 and the stack step portion 15 of the outer container 1 are overlapped, the elongated flange portion 12 of the outer container 1 does not have a metal foil. Since the inner container 2 is peeled off, even if the plurality of double-layer containers 1 and 2 are placed in a microwave oven after the cover member 3 is peeled off, no spark is generated. However, the cover member 3 must have a step and heat-sealed to the short flange portion 22 of the inner container 2, so in order to seal the step portion, as described above, the pre-pressed formed cover member 3 is used in the heat seal portion. It is preferred to carry out heat sealing at 42, 43. Further, in the same manner as in the first embodiment described above, the step portion 15 and the inner side of the stacking of the outer container 1 are made The sealing flange width of the short flange portion 22 of the device 2 is 0.5 mm or more, whereby the gas barrier property of the metal container can be maintained.
接著,對本發明的具體實施例進行說明,但本發明並不特別限定於該等實施例。 Next, specific embodiments of the present invention will be described, but the present invention is not particularly limited to the embodiments.
透過塗布量3g/m2的雙液固化型聚酯聚氨酯系接著劑,將厚度30μm的聚丙烯薄膜貼附於厚度100μm的以JIS H4000進行分類之A8079的已退火鋁合金箔的雙面,在40℃下熟成(curing)3天,並將潤滑成形用的矽油極薄地塗布於其雙面,藉此得到內側容器2用的層積體。 A polypropylene film having a thickness of 30 μm was attached to both sides of an annealed aluminum alloy foil of A8079 having a thickness of 100 μm and classified by JIS H4000 through a two-liquid curable polyester urethane-based adhesive having a coating amount of 3 g/m 2 . After curing at 40 ° C for 3 days, the eucalyptus oil for lubricating molding was applied to both sides thereof in an extremely thin manner, whereby a laminate for the inner container 2 was obtained.
如表1所示,使用由公模與母模所構成的模具,以使凸緣部分不產生皺褶的方式進行深引伸成形,而使該層積體成為口徑φ120mm、凸緣寬度2mm、容量200ml之尺寸的圓型(圓筒型)容器,以製作內側容器2。 As shown in Table 1, a deep mold was formed so that the flange portion was not wrinkled by using a mold composed of a male mold and a master mold, and the laminate had a diameter of φ120 mm, a flange width of 2 mm, and a capacity. A round (cylindrical) container of 200 ml size was used to make the inner container 2.
接著,將上述內側容器2設置於對應上述內側容器2之內部形 狀的射出成形機的公模,疊合母模並關閉模具,從母模部分(內側容器2的底面側),將含有1%滑石、MFR為15g/10分鐘(以JIS K7210的溫度230℃、載重2.16kg進行測定)的隨機型聚丙烯樹脂,熔融射出至模具內,以使由平均厚度為1mm之聚丙烯構成的外側容器1與內側容器2外側密合的方式進行成形,以製作對應第一實施方式之微波爐用保存容器的雙層容器,作為實施例1的試作容器。此外,在該射出成形中,將外側容器1之長大凸緣部12的凸緣寬度形成為5mm。 Next, the inner container 2 is disposed in an inner shape corresponding to the inner container 2 The male mold of the injection molding machine, which overlaps the master mold and closes the mold. From the mother mold portion (the bottom side of the inner container 2), it contains 1% talc and has an MFR of 15 g/10 min (at a temperature of JIS K7210 of 230 ° C). The random polypropylene resin having a load of 2.16 kg was melted and injected into a mold to form an outer container 1 made of polypropylene having an average thickness of 1 mm so as to be in close contact with the outer side of the inner container 2 to prepare a corresponding one. The double-layered container of the storage container for microwave ovens of the first embodiment is used as the test container of the first embodiment. Further, in the injection molding, the flange width of the elongated flange portion 12 of the outer container 1 was set to 5 mm.
如表1所示,將以與實施例1相同所得之內側容器2的短小凸緣部22使其寬度為0.5mm的方式,進行修剪。接著,如上述第二實施方式所示,藉由射出成形,以使與上述內側容器2密合的方式,形成具有堆疊用階差部15的外側容器1。亦即,將上述內側容器2設置於射出成形機的公模,重合母模並關閉模具,再從母模部分(內側容器2的底面側),將含有1%滑石、MFR為15g/10分(以JIS K7210的溫度230℃、荷重2.16kg進行測定)的隨機型聚丙烯樹脂熔融射出至模具內,以使由平均厚度為1mm之聚丙烯構成的外側容器1與內側容器2外側密合的方式進行成形,製作對應第二實施方式之微波爐用保存容器的雙層容器,以作為實施例2的試作容器。此外,在該射出成形中,使外側容器1之長大凸緣部12的凸緣寬度為5mm,並在外側容器1之周圍壁的上端開口部下側5mm的位置上,沿整周形成水平部的寬度為0.5mm的堆疊用階差部15。 As shown in Table 1, the short flange portion 22 of the inner container 2 obtained in the same manner as in the first embodiment was trimmed so as to have a width of 0.5 mm. Next, as shown in the second embodiment, the outer container 1 having the step portion 15 for stacking is formed by injection molding so as to be in close contact with the inner container 2. That is, the inner container 2 is placed in the male mold of the injection molding machine, the master mold is superposed, the mold is closed, and the 1% talc is contained from the mother mold portion (the bottom surface side of the inner container 2), and the MFR is 15 g/10 minutes. The random polypropylene resin (measured at a temperature of 230 ° C and a load of 2.16 kg of JIS K7210) was melt-ejected into a mold so that the outer container 1 made of polypropylene having an average thickness of 1 mm was in close contact with the outer side of the inner container 2. In the manner of molding, a double-layered container corresponding to the storage container for a microwave oven according to the second embodiment was produced as a test container of the second embodiment. Further, in the injection molding, the flange width of the elongated flange portion 12 of the outer container 1 was set to 5 mm, and the horizontal portion was formed along the entire circumference at a position 5 mm below the upper end opening portion of the peripheral wall of the outer container 1. The step portion 15 for stacking having a width of 0.5 mm.
如表1所示,將上述內側容器2,設置於真空成形用填充模 (plug mold)(其對應於實施例1相同的方式所得之內側容器2之內側形狀),一方面以活塞(plug)將加熱至160℃之厚度0.3mm的隨機型聚丙烯片材壓入,一方面進行真空成形,使其與內側容器2的外側密合成一體,以形成外側容器1。將該外側容器1之長大凸緣部12的寬度修剪為5mm,以製作對應第一實施方式之微波爐用保存容器的雙層容器,作為實施例3的試作容器。 As shown in Table 1, the inner container 2 is placed in a vacuum forming mold. (plug mold) (which corresponds to the inner shape of the inner container 2 obtained in the same manner as in the first embodiment), on the one hand, presses a random polypropylene sheet having a thickness of 0.3 mm heated to 160 ° C with a plug, On the one hand, vacuum forming is performed to be integrated with the outer side of the inner container 2 to form the outer container 1. The width of the elongated flange portion 12 of the outer container 1 was trimmed to 5 mm to prepare a double-layered container corresponding to the storage container for a microwave oven according to the first embodiment, and was used as a test container of the third embodiment.
如表1所示,僅準備以與實施例1相同的方式所得之內側容器作為比較例1的試作容器。 As shown in Table 1, only the inner container obtained in the same manner as in Example 1 was prepared as the test container of Comparative Example 1.
如表1所示,使內側容器之凸緣部(相當於短小凸緣部)的寬度尺寸為5mm,並使其凸緣部的外周邊緣與外側容器之凸緣部(相當於長大凸緣部)的外周邊緣一致,除此之外與上述實施例1相同地,製作比較例2的試作容器。 As shown in Table 1, the flange portion (corresponding to the short flange portion) of the inner container has a width of 5 mm, and the outer peripheral edge of the flange portion and the flange portion of the outer container (corresponding to the elongated flange portion) A test container of Comparative Example 2 was produced in the same manner as in Example 1 except that the outer peripheral edge of the film was the same.
如表2所示,在使輸出600W之微波爐爐內容易產生火花的以下狀態(1)~(4),分別對實施例1~3及比較例1、2的各試作容器照射微波10分鐘。 As shown in Table 2, each of the test containers of Examples 1 to 3 and Comparative Examples 1 and 2 was irradiated with microwaves for 10 minutes in the following states (1) to (4) in which a spark was easily generated in a microwave oven having an output of 600 W.
(1)以使2個試作容器的凸緣部分互相接觸的方式配置於微波爐的樹脂製轉盤上。 (1) The flange portions of the two test containers are placed in contact with each other on a resin rotary table of a microwave oven.
(2)將2個試作容器的凸緣部互相重疊並配置於樹脂製的轉盤上。 (2) The flange portions of the two test containers were placed on each other and placed on a resin-made turntable.
(3)將琺瑯製的盤子放置於樹脂製的轉盤上,並將試作容器配置於其上。 (3) The tanning plate was placed on a resin-made turntable, and the test container was placed thereon.
(4)在樹脂製轉盤的整個面上鋪設家庭用鋁箔紙,並將試作容器配置於其上。 (4) A household aluminum foil was laid on the entire surface of the resin turntable, and a test container was placed thereon.
接著,在試作容器中填充200ml自來水,配置於樹脂製的轉盤中央並測定到自來水沸騰為止的時間。結果一併顯示於表2。 Next, the test container was filled with 200 ml of tap water, placed in the center of the resin-made turntable, and the time until the tap water boiled was measured. The results are shown together in Table 2.
如表2所示,實施例1~3的試作容器,即使在蓄意設置為容易產生火花的狀態(1)~(4)下照射微波,亦未產生火花,而只有比較例1的內側容器(鋁加工箔)的試作容器,無論在使凸緣端部接觸或是使凸緣重疊的情況下,皆立即產生火花,且無論是放置於琺瑯盤或是鋁箔上的狀態,容器底部皆產生火花。此外,如比較例2凸緣端部露出之狀態的試作容器,僅凸緣重疊並未產生火花,但若使露出的鋁彼此接觸,則迅速地產生火花。 As shown in Table 2, in the test containers of Examples 1 to 3, even when the microwave was irradiated in a state (1) to (4) which was intentionally set to generate a spark, no spark was generated, and only the inner container of Comparative Example 1 was used ( The test container of the aluminum foil) immediately generates sparks when the flange ends are brought into contact or the flanges are overlapped, and the spark is generated at the bottom of the container regardless of whether it is placed on the tray or the aluminum foil. . Further, in the test container in which the flange end portion of Comparative Example 2 was exposed, only the flanges were overlapped and no spark was generated. However, when the exposed aluminum was brought into contact with each other, a spark was quickly generated.
為了評價容器的保存性能,而製作以下的密封用蓋材A、B。 In order to evaluate the storage performance of the container, the following sealing cover materials A and B were produced.
將雙液固化型聚酯聚胺酯樹脂所構成的適用加熱加壓殺菌的接著劑,以形成3g/m2的態樣,塗布於厚度60μm之以JIS H4000分類的1N30的軟質鋁的單面,並與厚度12μm的聚酯薄膜(東洋紡股份有限公司製)「E5100」貼合。更進一步,以同樣的塗布量將同樣的接著劑塗布於鋁箔的反面,並與厚度50μm的聚丙烯與聚乙烯所構成之易開封密封膜(OKAMOTO股份有限公司製「AROMA-TP6」)貼合,在40℃的恆溫槽使其熟成3天,並修剪成比試作容器的凸緣部大一圈的狀態,以製作可熱壓殺菌的蓋材A。 An adhesive suitable for heat and pressure sterilization comprising a two-liquid curable polyester polyurethane resin was applied to a single side of 1N30 soft aluminum classified by JIS H4000 in a thickness of 60 μm in a state of 3 g/m 2 . It was bonded to a polyester film (manufactured by Toyobo Co., Ltd.) "E5100" having a thickness of 12 μm. Further, the same adhesive was applied to the reverse side of the aluminum foil in the same coating amount, and bonded to an easy-opening sealing film ("AROMA-TP6" manufactured by OKAMOTO Co., Ltd.) made of polypropylene and polyethylene having a thickness of 50 μm. The mixture was aged for 3 days in a thermostat at 40 ° C, and trimmed to a state larger than the flange portion of the test container to prepare a heat-curable sterilized lid member A.
藉由深引伸成形,將與上述蓋材A相同的原材料,形成凹陷深度5mm的態樣,而成為可與實施例2之試作容器之堆疊用階差部嵌合的凹陷部,並且將該深引伸成形品的外周緣部,修剪成比實施例2之試作容器的凸緣部大一圈的態樣,以製作可加熱加壓殺菌的凹陷蓋狀蓋材(附凹陷部蓋材)B。 By the deep drawing, the same material as the above-mentioned lid member A is formed into a recessed portion having a recess depth of 5 mm, and is formed into a recess portion which can be fitted to the stack step portion of the test container of the second embodiment, and the depth is deep. The outer peripheral edge portion of the stretched molded article was trimmed to a larger extent than the flange portion of the test container of the second embodiment to prepare a concave lid-shaped lid member (with a recessed lid member) B which can be heated and pressurized.
為了評價以蓋材A、B密封之試作容器的氣體阻隔性,選定遇氧容易變色的含大量花青素及單寧酸的水羊羹作為填充物(內容物),以下述要領進行製作。 In order to evaluate the gas barrier properties of the test containers sealed with the lid members A and B, water alpaca containing a large amount of anthocyanins and tannic acid which are easily discolored by oxygen was selected as a filler (content), and was produced in the following manner.
在裝入琺瑯鍋的400ml純水中,加入500g市售罐裝豆沙餡(加糖)與4g寒天粉末,並以慢火熬煮10分鐘。 In 400 ml of pure water filled in a crucible, 500 g of commercially available canned bean paste (sweetened) and 4 g of cold day powder were added, and boiled for 10 minutes on a slow fire.
【表3】
接著,將填充物裝入各種容器,以下述條件1~4進行密封,以製作實施例11、12及比較例11、12的密封型試作容器。 Next, the filler was placed in various containers and sealed under the following conditions 1 to 4 to prepare sealed test containers of Examples 11 and 12 and Comparative Examples 11 and 12.
如表3所示,將200ml填充物加入與實施例1相同的開放型試作容器,蓋上蓋材A,並設置於加工成可承裝凸緣部之整體寬度(5mm寬度)的密封用儲存桶,以加熱至200℃的鋁製密封模具,從上部對凸緣部分施加0.3MPa的壓力,對凸緣整體進行熱封合2秒鐘,而形成實施例11的密封型試作容器。 As shown in Table 3, 200 ml of the filler was placed in the same open type test container as in Example 1, covered with a cover material A, and placed in a sealing storage bucket which was processed into an integral width (5 mm width) capable of supporting the flange portion. An aluminum sealing mold heated to 200 ° C was applied with a pressure of 0.3 MPa from the upper portion to the flange portion, and the entire flange was heat-sealed for 2 seconds to form a sealed type test container of Example 11.
如表3所示,以與條件1(實施例11)相同的要領,設置於密封用儲存桶,以加工成僅外側容器之凸緣部被密封(加工成內側容器未密封之態樣的整圈密封寬度2mm)的鋁製模具,以200℃、0.3MPa、2秒鐘的條件進行熱封合,形成比較例11的密封型試作容器。 As shown in Table 3, in the same manner as Condition 1 (Example 11), it was set in the sealing tub to be processed so that only the flange portion of the outer container was sealed (processing to the inner container was not sealed) The aluminum mold having a ring seal width of 2 mm was heat-sealed at 200 ° C, 0.3 MPa, and 2 seconds to form a sealed test container of Comparative Example 11.
如表3所示,將170ml的內容物加入與實施例2相同的開放型試作容器,將蓋材B設置於該試作容器的上端。此時,將蓋材B的凹陷部嵌 入開放型試作容器之堆疊用階差部所包圍的部分而形成嵌合狀態,並且將蓋材B的外周緣部載置於試作容器的凸緣部。接著,使用鋁製密封模具(其加工為附有凹陷部之蓋材B的形狀),以200℃、0.3MPa、2秒鐘的條件,在開放型試作容器之凸緣部與堆疊用階差部的部分進行熱封合,形成實施例12的密封型試作容器。 As shown in Table 3, 170 ml of the contents were placed in the same open type test container as in Example 2, and the lid member B was placed on the upper end of the test container. At this time, the recessed portion of the cover material B is embedded The portion surrounded by the step portion of the open type test container is formed into a fitted state, and the outer peripheral edge portion of the lid member B is placed on the flange portion of the test container. Next, using an aluminum sealing mold (which is processed into the shape of the lid member B with the depressed portion), the step portion of the open type test container and the stacking step were used at 200 ° C, 0.3 MPa, and 2 seconds. A portion of the portion was heat-sealed to form a sealed type test container of Example 12.
如表3所示,以與條件3相同的要領,將170ml的內容物加入與實施例2相同的開放型試作容器,並蓋上蓋材B,以不將堆疊階差部密封的方式,藉由鋁製模具,以200℃、0.3MPa、2秒鐘的條件,僅對外側容器的長大凸緣部進行熱封合,製作比較例12的密封型試作容器。 As shown in Table 3, in the same manner as Condition 3, 170 ml of the contents were placed in the same open type test container as in Example 2, and the cover material B was covered so as not to seal the stack step portion by In the aluminum mold, only the elongated flange portion of the outer container was heat-sealed at 200 ° C, 0.3 MPa, and 2 seconds to prepare a sealed type test container of Comparative Example 12.
將以條件1~4填充密封之實施例11、12及比較例11、12的各密封型試作容器放入40℃的恆溫槽,經過3個月後,打開蓋材並觀察填充物的變色情況。結果顯示於表4。 Each sealed type test container of Examples 11 and 12 and Comparative Examples 11 and 12 which were filled and sealed under the conditions 1 to 4 was placed in a thermostat bath at 40 ° C, and after 3 months, the lid member was opened and the discoloration of the filler was observed. . The results are shown in Table 4.
如表4所示,在40℃的溫度環境下經過3個月的保存期間,不具備「在蓋材的密封位置具有作為屏障層之鋁箔的內側容器的凸緣部」的 比較例11、12的密封容器,發現變黑的現象,其被認為係填充物中紅豆的花青素及單寧酸等的氧化所引起。另一方面,具備「在密封位置具有鋁箔的內側容器之凸緣部」的實施例11、12,則並未發現變黑的現象,而可確認鋁箔之氣體阻隔性效果。 As shown in Table 4, in the storage period of 3 months in a temperature environment of 40 ° C, the flange portion of the inner container having the aluminum foil as a barrier layer at the sealing position of the lid member is not provided. In the sealed containers of Comparative Examples 11 and 12, the phenomenon of blackening was observed, which was considered to be caused by oxidation of anthocyanins and tannic acids of red beans in the filler. On the other hand, in Examples 11 and 12 which provided the "flange portion of the inner container having the aluminum foil at the sealing position", no blackening phenomenon was observed, and the gas barrier effect of the aluminum foil was confirmed.
此外,在本試驗所使用的條件1、3(實施例11、12)的密封容器,因蓋材開封後,鋁箔未在凸緣端部露出,故在微波爐烹調中並沒有產生火花的疑慮。 Further, in the sealed containers of the conditions 1 and 3 (Examples 11 and 12) used in the test, since the aluminum foil was not exposed at the flange end portion after the lid member was opened, no spark was generated during cooking in the microwave oven.
本申請案主張2014年3月31日提出申請的日本專利申請案特願2014-73402號之優先權,其揭示內容,直接構成本申請案的一部分。 The present application claims priority to Japanese Patent Application No. 2014-73402, filed on Jan.
此處所使用的用語及表達方式,係用以說明而非用於限定地解釋,亦並非係排除此處所示及所述之特徵事項的任一均等物者,故必須瞭解其係允許本發明之申請專利範圍內的各種變形者。 The words and expressions used herein are used for the purpose of illustration and not limitation, and are not intended to be Various variants within the scope of the patent application.
本發明之微波爐用保存容器,係可長期保存咖哩、燉煮食物及焗烤等已烹調食品等的內容物,同時在必要時可用作以微波爐加熱烹調內容物的微波爐適用型保存容器。 In the storage container for a microwave oven of the present invention, the content of the cooked food such as curry, stewed food, and grilled food can be stored for a long period of time, and if necessary, it can be used as a microwave-type storage container for heating and cooking the contents in a microwave oven.
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