TWI272218B - Container closure - Google Patents

Container closure Download PDF

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Publication number
TWI272218B
TWI272218B TW092102547A TW92102547A TWI272218B TW I272218 B TWI272218 B TW I272218B TW 092102547 A TW092102547 A TW 092102547A TW 92102547 A TW92102547 A TW 92102547A TW I272218 B TWI272218 B TW I272218B
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Taiwan
Prior art keywords
layer
seal
polyethylene
substrate
component
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TW092102547A
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English (en)
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TW200405880A (en
Inventor
David John O'brien
Victor Sachs
Joseph Smelko
Robert Willia Thorstensen-Woll
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Illinois Tool Works
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00Layered products comprising a layer of synthetic resin
    • B32B27/06Layered 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
    • B32B27/08Layered 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 of synthetic resin
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65BMACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B7/00Closing containers or receptacles after filling
    • B65B7/16Closing semi-rigid or rigid containers or receptacles not deformed by, or not taking-up shape of, contents, e.g. boxes or cartons
    • B65B7/28Closing semi-rigid or rigid containers or receptacles not deformed by, or not taking-up shape of, contents, e.g. boxes or cartons by applying separate preformed closures, e.g. lids, covers
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS 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
    • B65D51/00Closures not otherwise provided for
    • B65D51/18Arrangements of closures with protective outer cap-like covers or of two or more co-operating closures
    • B65D51/20Caps, lids, or covers co-operating with an inner closure arranged to be opened by piercing, cutting, or tearing
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS 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
    • B65D53/00Sealing or packing elements; Sealings formed by liquid or plastics material

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Closures For Containers (AREA)
  • Glass Compositions (AREA)

Description

1272218 B7
經濟部智慧財產局員工消費合作社印製 【發明所屬之技術領域】 本發明關於容器的封閉件。 【先前技術】 在把從藥錠到即溶咖啡的廣泛多樣材料包裝在容 5瓶子和罐子)内時,提供一成一連接於容器頸部之密封件和一° 覆蓋並保護該密封件之螺旋蓋之形式的封閉件且在該密封件 去除以取得容㈣容物之後提供—可再:欠關閉之蓋子已是當今 司空見慣的事。提供此一封閉件之一便利方式為在密封件底 表面提供-覆蓋著-金制之熱敏黏著龍層或可炫性塑膠 10層。此金屬謂能做為該密封件之基片,或者該密封件可包含: 由紙或塑膠材料製成之獨立基片。然後將此一密封件放在一容 器之頸部頂上並由外加的螺旋蓋將其夾抵於該容器頸部,在^ 同時該封閉件經歷-感應加熱步驟,此步驟加熱該金屬箱且隨 後激活該熱敏黏著劑層或溶化該塑膠層,使得該密封件在冷卻 15過程中黏合於該容器之頸部頂部。 · ^ 終端消費者難以去除此等密封件,是以有一種從容器頸部 往旁邊延伸之耳片讓消費者能夠抓住以便去除密封件。此方式 有一難處在於在感應加熱過程中於箔片内誘發的渦電流主要是 在^封件之周圍誘發。當密封件包含一耳片,此等電流因而繞 2〇行遠離於容器頸部之耳片邊緣誘發,使得密封件經常無法完全 固定於耳片附近的容器頸部頂部。 種在今日經證明廣受歡迎的克服此問題方式稱為、 Tab"(註冊商標)系統,其在美國專利第4961986號中有完整 說明。此系統包含一多層基片,該基片局部分層以提供一全然 本紙張尺度適用中國國家標準(CNS)A4規格(210x297公釐)
1272218 經濟部智慧財產局員工消費合作社印製
A7 B7 1272218 五、發明說明(3) 其包含一全然臥放於該密封件之外周以内的自由耳片,·一 層襯墊;及附接構件,其包含一用來使包含該耳片之密封 件基片附接於該襯墊的剝離材料層。 較佳來說,在一 25公釐寬之樣本條帶上,該附接構 5件在該剝離材料層以1500公釐/分鐘速率剝離的剝離強度 是在20至90克的範圍内。一更佳的剝離強度範圍是相同 條件下之50至60克重/25公釐。剝離強度的測量是以一 垂直於該條帶的方向進行。 由於該密封件包含一自由耳片,其最上層並非完全附 10接於密封件的其他部分。在過去,認為此局部分層結構會 在意圖形成一單組件襯墊及密封系統時會造成可觀的難 題。然而,吾人已發現事實並非如此,且藉由在密封件與 襯墊間之附接物内納入一剝離材料層,終端消費者對螺旋 盍之起始旋開動作會讓此單組件系統的兩個半體在該剝離 15材料層分開而不會以任何方式傷到可提起的耳.片或密封 件〇 經 濟 部 智 慧 財 產 局 員 工 消 f 合 作 社 印 製 較佳來說,該附接構件是由一層構成密封件基片之最 上層且塗佈著由硝化纖維素或矽酮化合物構成之剝離材料 層的聚乙稀對苯二曱酯層以及一層做為剝離材料層與襯墊 20底側表面間之黏著劑的低密度聚乙烯構成。塗佈於該聚乙 烤對笨二甲醋上之硝化纖維素或矽酮化合物牢固地黏合在 此層上。該層低密度聚乙烯牢固地黏合在襯墊上但脆弱地 2 σ在該琐化纖維素或矽酮層上。在遭受一大致垂直於該 达封件和襯塾之方向的分離力量時,輕易地超過硝化纖維 本紙張;中國國家標準(CNS)A4規格 (210x297 公釐) 1272218 、發明說明(4) ==::與㈣之間的黏合強度使得密封件和襯 該襯墊可由-層食品級紙m 乙烯)構成。在後者情況中’可在發 附接構件之低密度聚乙烯層之間包含一層聚丙烯。 10 15 經濟部智慧財產局員工消費合作社印製 20 另-選擇,該附接構件得由一聚乙稀對苯二甲 層構成,此層構成㈣件基片之最上層且其上塗佈I 著劑層。襯㈣統之底層得為—塗佈著―剝離材料例 ^乙酸丙酸纖維素(cap)〕wPETi其隨後黏^於附 接構件之黏著㈣。在遭受__A致垂直於該密封件和概塾 之方向的分離力量時,輕易地超過黏著劑與有塗層ρΕτ之 間的黏合強度使得密封件和襯墊組件相互分開且^離點是 在剝離材料層與上部PET層之間。 ” 該密封件最好包含一可感應加熱密封系統,該系統包 括一層鋁箔且在此層的最下面塗佈著一熱熔性黏著劑。可 在該熱熔性黏著劑與鋁箔層之間夾置一層聚乙烯對苯二甲 醋以使該箔片與容器内容物隔絕並藉以防止該箱片層腐 餘。δ亥密封件亦包含一可包含一如美國專利第⑽6號 所述之紙層壓物的基片,但最好是包含一層發泡聚合物像 疋一發泡聚稀烴(例如聚乙烯)黏合於該箔片層和一層聚 乙稀對笨二甲酯黏合於該發泡材料層。可在該聚乙稀對苯 二^甲_層與發泡材料之間未黏合的區域内夾置另_層的聚^ 乙烯對笨二曱酯、尼龍或聚丙烯。該密封件基片可包含_ 上部層發泡塑膠(例如乙烯—醋酸乙烯酯發泡材料)失置 -6 - 本紙張尺度適用中國國家標準(CNS)A4規格(21〇χ297公釐) 1272218
於聚乙晞發泡材料層與聚乙歸 式,該可提起的耳片亦可包含—發_;層曰,間。依此方 該螺旋蓋大體上是習知形 多頭不成圈螺紋。較佳來說,^ &夕圈螺紋或是-指狀件系列用以在該蓋最初用I ^向延伸的肋件或 單組件襯墊及密封件固持於定位合在-起的 閉過程中繼續將襯塾固持於定位。較; 使好頂部與肋件或指狀件之間具有能讓整 10 15 經濟部智慧財產局員工消費合作社印製 20 == 晴於蓋子轉動的充分間隙。此容許概塾在-垂 直於襯墊及赠件之_相作用下與密封件 器可為玻璃或塑膠材料所製,例如聚乙烯、聚0旨、聚氣乙 稀、聚丙烯、聚苯乙稀或丙稀腈_丁二烯_苯乙烯共聚物。 【實施方式】 今參照所附圖式說明依據本發明之單組件概塾及密封 件系統的兩個實施例。 單組件襯墊及密封件丨包_接在—起的—填塞物或概塾 2和-密封:3。單組件襯墊與密封件i是由數層的層壓物構 成,從底部算來包括··一熱熔性黏著劑塗層4,其通常是以一 在25至38 g/m2範圍内的等級沈積,且可包含聚酯塗層、乙 烯-醋酸乙烯酯、聚丙烯、乙烯—丙烯酸共聚物、或是Suriyn (注冊商ί示),一層銘箔5,例如20或25微米厚;一層聚合 物黏著劑層6,例如是在3至2〇 g/nf範圍内的等級施加;一層 聚乙烯發泡材料層7,其為125-250微米厚;一層聚乙烯對笨 本紙張尺度適用中國國家標準(CNS)A4規格(210 x 297公楚) 1272218 A7 B7 五、發明說明(6) 10 15 經濟部智慧財產局員工消費合作社印製 20 二曱_層8’其僅橫跨發泡材料層7之局部延伸且未黏著於發 泡材料層7 ; —層聚合物黏著劑層9,例如是5〇g/m2的等級施 加,一層聚乙細對本一曱醋層,其為23微米厚且黏著於發 泡材料層7和聚乙稀對苯二曱酯層8 ; —層硝化纖維素層η, 其疋以1到2 g/m的專級施加’其做為一剝離材料層;一層低 密度聚乙細層12 ’其是以20g/rri的等級施加;及一層食品級紙 板13,其通常是700至900微米厚。 黏著劑層6和9通常是乙烯-醋酸乙烯酯共聚物、聚乙烯或 聚胺基甲酸酯。低密度聚乙烯層12通常是以一熔融態施加, 且在冷卻時牛固地黏合於紙板13且充分黏合於硝化纖維素層 1卜 因為聚乙烯對苯二曱酯層1〇、硝化纖維素層u和低密度 聚乙烯層12的存在,在密封件部分3與襯墊2之間形成一黏合 作用。然而,此附接方式包含一由形成於剝離材料層丨丨與低 密度聚乙稀層12間之難合侧構成的減祕。此黏合;|乍用 足以在後續處理和搬運過程中將襯墊2和密封件3固持在一 起,但弱到足以在受到-如圖所示垂直向上方向的適當分離力 時讓襯塾2與密封件3分開。聚乙稀對苯二㈣層8的局部存 在以及其未黏合於發泡材料層7的事實提供—由層8和1〇構成 的獨立耳片部分,此部分不黏著於層7且_形成—可提起耳 片50 (示於圖4),其在下文中詳述。 示於圖2之第二實施例與第一實例從層4到層12都相同, 但在本實例中層12是附接於_20微米厚的聚丙烯薄膜層14。 -層以2Gg/m2的等級施加之聚丙烯聚乙烯聚合物鮮劑層. 15
木紙張尺度適財_家標準(CNS)A4規格⑽χ 297公 1272218 五、發明說明(7) Α7 Β7 5 10 15 經濟部智慧財產局員工消費合作社印製 20 將=烯層14黏著於—層展開的聚乙稀發泡材料層16 (厚度 2常是1·0或1·6公釐)。一層以20g/nf的等級施加之聚丙稀 聚乙烯聚合物轉綱17將展開的聚乙烯發泡·層16黏著 於:層,微米厚的聚丙烯層18。在此第二實施例中,襯墊2 本質上是由-覆蓋著聚丙_ 14和18的展開聚乙烯發泡材料 層16構成,其取代第一實例中的食品級紙板。 ^層壓物成形讀,對其騎沖城形細卿單組件概 墊及密封件1 ®盤。將單組件襯魏密封件丨壓人配合於一螺 方疋盍20的頂部内側且藉由一周向肋件21將其固持於定位。單 組件襯墊及密封件丨的尺寸訂定躲由肋件21將其牢固地固 持於定位的同時能夠在蓋2G的頂勒自由轉動。雜用中, 將一配備著依據本發明之一單組件襯墊及密封件丨的螺旋蓋旋 緊於-槪30的開口頸部上使得單組件襯墊及密封件丨夹在瓶 3〇之開口頸部與蓋20頂部之間。然後使蓋20和瓶30經歷一 感應加熱步驟,其中_ 5在其關_電流生成於其内而受 熱,此炫化熱溶性黏著劑塗層4致使密封件3點合在瓶的開 口頸部上。然後將已密封的容器配銷出去。 ,在終端使用者將螺旋蓋20取離瓶3〇時,密封件3仍黏著 於瓶30的開口頸部,同時襯墊2仍由肋件21將其同持在蓋2〇 頂部之内。㈣件3和襯墊2於此初次將蓋2()取離瓶^貝部 的過程中在槪纖維素剝離材料層u分開H終端使 僅需藉由抓住由層8和1()構成之耳片5Q並對耳片如施 熱雜塗層4她3_制姆力的力量,㈣整個密封件3 移離的方式輕易地將密封件3自瓶3〇頸部移除,以容許終端 9 - 本紙張尺度適用中國國家標準(CNS)A4規格(21〇 χ 297公爱) A7 B7 1272218 五、發明說明(8) 使用者取得瓶30的内容物。襯墊2保持在蓋内以在再次關閉 時形成一第二密封。 【圖式簡單說明】 5 圖1為一第一實例之剖面圖,其鉛直向尺寸經大幅誇 大; 圖2為一第二實施例之剖面圖,其鉛直向尺寸亦經大 幅誇大; 圖3為一螺旋蓋之剖面圖,其中顯示襯墊及密封件就定 10 位;且 圖4為一透視圖,其中顯示密封件在一容器之頸部上就定 位0 經濟部智慧財產局員工消費合作社印製 本紙張尺度適用中國國家標準(CNS)A4規格(210x297公釐) A7 B7 1272218 五、發明說明(9) 圖式之元件代號說明: 符號 名稱 1 單組件襯墊及密封件 2 襯墊 3 密封件 4 熱熔性黏著劑塗層 5 鋁箔 6 密封件基片(聚合物黏著劑層) 7 聚乙烯發泡材料層 8 聚乙烯對苯二曱酯層 9 聚合物黏著劑層 10 聚乙烯對苯二甲酯層 11 硝化纖維素層(剝離材料層) 12 低密度聚乙烯層 13 食品級紙板 14 聚丙烯層 15 聚丙烯聚乙烯聚合物黏著劑層 16 聚乙稀發泡材料層 17 聚丙烯聚乙烯聚合物黏著劑層 18 聚丙稀層 20 螺旋蓋 21 肋件 30 瓶 50 耳片 經濟部智慧財產局員工消費合作社印製 11- 本紙張尺度適用中國國家標準(CNS)A4規格(210 X 297公釐)

Claims (1)

10 15 20 25 申請專利範圍 2· 3. 4. 專利申請案第92102547號 ROC Patent Appln. No.92102547 修正後無劃線之中文申請專利範圍-附件(一) Amended Claims in Chinese - Enel, m (民-93年9月日送呈) (Submitted on SeptemberX^ 2004) 一種螺旋盍之單組件密封件及襯墊(1 ),其包含· -密封件(3),其具有下部的層(4,5)形成—用來 將該密封件⑴附接於-容器之頸部的可感應加執 岔封糸統;一密封件基片(6),其包含-全然臥放 於該密封件之外周以内的自由耳片(5〇); 如申請專利範圍第i項之螺旋 墊⑴,其中該附接構件 構二件及襯 片之最上層的聚乙稀對苯:層構成该岔封件基 酮化合物構成‘二;「由:化 層在襯墊(2)底側表面上 及 構成。 低雄、度聚乙烯層(12) 如申請專鄕11第丨項之 ” 墊⑴,其中該襯墊f之早組件密封件及襯 (13)或一層發泡塑膠材料屉疋由一層食品級紙板 構成。 9 (16)例如發泡聚乙烯 如申請專利範圍第3項之螺 时 墊(1),其中當該襯墊包八盍之單組件密封件及襯 (16),在該發泡材料層層發泡塑膠材料層 • ^ 16)與該附接構件之低密 本紙張尺度適用中國國家標準(CNS)A4規袼(21〇 x 297公釐 1272218
申請專利範圍 10 15 經濟部智慧財產局員Η消費合作社印製 20 度聚乙烯層⑽之間包含 如申請專利範圍第3來丙細層(14)。 件密封件及襯墊(1),复、任—項之螺旋蓋之單組 其有-聚合物發泡材料層二密封件包含-基片’ 幻和-層局部 ⑼)的聚乙烯對苯二甲s旨層d⑺4供耳片 如申請專利範圍第5項之螺3 。 塾⑴,其中有另一層^乙%意之單組件密封件及概 _丙浠夹置於聚乙烯對笨 =二 Γ;層二間未黏合在-起的二, Γ(;ΓΓ5項之螺旋蓋之單組件密封件及襯 乙i父:封件基片包含-發泡塑膠(例如 =乙城乙醇發泡材料)上部層失置於發泡材料層 ),聚乙烯對苯二甲酿層(10)之間使得耳片 C50)亦包含一發泡材料層。 =申請專利範圍第6項之螺旋蓋之單組件密封件及襯 墊⑴,其中該密封件基片包含—發泡塑膠(例如 乙基-乙烯基乙醇發泡材料)上部層失置於發泡材料層 (7)與聚乙烯對苯二甲酯層(10)之間使得耳片 (50)亦包含一發泡材料層。 種螺旋蓋(20),其包含-個如巾請專利範圍第i 至8項中任一項之單組件襯墊及密封件乂丨)。 〇·如申凊專利範圍第9項之螺旋蓋,其更包含一周向延 伸的肋件(21)將已結合的單組件襯墊及密封件 5. 6. 8. 9. -13 - 本紙張尺度適用中_家標準(CNS)A4 規格(210x297公爱) 1272218 六、申請專利範圍 A8 B8 C8 D8 經濟部智慧財產局員工消費合作社印製 )固持定位而抵住蓋(2〇)的頂部。 如申明專利圍第1G項之螺旋蓋,其中該單組件概 墊及密封件⑴能在該蓋内自由轉動。 #種各器,其配備一個如申請專利範圍第9項之螺旋 蓋,其中該密封件密封於該容器的口部以關住一液態 或固態物質。 13.如申請專利範圍第12項之容器,其中該液態或固態 物質為飲料或食品。 14· 一種螺旋蓋之單組件密封件及襯墊,其包含:一密封 件,其具有一用來將該密封件附接於一容器的可感應 加,密封層’及—密封件基片,其包含-全然队放於 該密封件之外周以内的自由耳片,及一層襯墊,其經 由一剝離層可剝離地附接於該密封件,其中該密封件 進一步包含一上部層,其在一第一區域中連結該密封 件基片且在一第二區域中未連結該密封件基片;及一 中間層’其於該第二區域中夾置於該上部層與該密封 件基片之間’其中該中間層未連結該密封件基片以定 義該自由耳片。 -14 - 本紙張尺度適用中國國家標準(CNS)A4規格〇 X 297公釐)
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CN1642820A (zh) 2005-07-20
WO2003066465A1 (en) 2003-08-14
US20030196418A1 (en) 2003-10-23
CA2475353C (en) 2007-12-04

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