TW536474B - A packaging material and packages produced from the material for light-sensitive products - Google Patents

A packaging material and packages produced from the material for light-sensitive products Download PDF

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Publication number
TW536474B
TW536474B TW088112540A TW88112540A TW536474B TW 536474 B TW536474 B TW 536474B TW 088112540 A TW088112540 A TW 088112540A TW 88112540 A TW88112540 A TW 88112540A TW 536474 B TW536474 B TW 536474B
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Taiwan
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layer
carbon black
packaging material
plastic
patent application
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TW088112540A
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English (en)
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Lotta Klint
Lars Bergholtz
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Tetra Laval Holdings & Finance
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Classifications

    • 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
    • B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
    • B32B27/20—Layered products comprising a layer of synthetic resin characterised by the use of special additives using fillers, pigments, thixotroping agents
    • 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
    • B32B27/08—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 of synthetic resin
    • 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
    • B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
    • 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
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/14—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers
    • B32B37/15—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with at least one layer being manufactured and immediately laminated before reaching its stable state, e.g. in which a layer is extruded and laminated while in semi-molten state
    • B32B37/153—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with at least one layer being manufactured and immediately laminated before reaching its stable state, e.g. in which a layer is extruded and laminated while in semi-molten state at least one layer is extruded and immediately laminated while in semi-molten state
    • 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
    • B65D81/24—Adaptations for preventing deterioration or decay of contents; Applications to the container or packaging material of food preservatives, fungicides, pesticides or animal repellants
    • B65D81/30—Adaptations for preventing deterioration or decay of contents; Applications to the container or packaging material of food preservatives, fungicides, pesticides or animal repellants by excluding light or other outside radiation
    • 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
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/40—Properties of the layers or laminate having particular optical properties
    • 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
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/40—Properties of the layers or laminate having particular optical properties
    • B32B2307/402—Coloured
    • B32B2307/4026—Coloured within the layer by addition of a colorant, e.g. pigments, dyes
    • 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
    • B32B2313/00—Elements other than metals
    • B32B2313/04—Carbon
    • 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
    • B32B2439/00—Containers; Receptacles
    • B32B2439/40—Closed containers
    • B32B2439/60—Bottles
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/13—Hollow or container type article [e.g., tube, vase, etc.]
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/13—Hollow or container type article [e.g., tube, vase, etc.]
    • Y10T428/131—Glass, ceramic, or sintered, fused, fired, or calcined metal oxide or metal carbide containing [e.g., porcelain, brick, cement, etc.]
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/13—Hollow or container type article [e.g., tube, vase, etc.]
    • Y10T428/131—Glass, ceramic, or sintered, fused, fired, or calcined metal oxide or metal carbide containing [e.g., porcelain, brick, cement, etc.]
    • Y10T428/1317—Multilayer [continuous layer]
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/13—Hollow or container type article [e.g., tube, vase, etc.]
    • Y10T428/131—Glass, ceramic, or sintered, fused, fired, or calcined metal oxide or metal carbide containing [e.g., porcelain, brick, cement, etc.]
    • Y10T428/1317—Multilayer [continuous layer]
    • Y10T428/1321—Polymer or resin containing [i.e., natural or synthetic]
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/13—Hollow or container type article [e.g., tube, vase, etc.]
    • Y10T428/1324—Flexible food casing [e.g., sausage type, etc.]
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/13—Hollow or container type article [e.g., tube, vase, etc.]
    • Y10T428/1334—Nonself-supporting tubular film or bag [e.g., pouch, envelope, packet, etc.]
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/13—Hollow or container type article [e.g., tube, vase, etc.]
    • Y10T428/1334—Nonself-supporting tubular film or bag [e.g., pouch, envelope, packet, etc.]
    • Y10T428/1341—Contains vapor or gas barrier, polymer derived from vinyl chloride or vinylidene chloride, or polymer containing a vinyl alcohol unit
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/13—Hollow or container type article [e.g., tube, vase, etc.]
    • Y10T428/1352—Polymer or resin containing [i.e., natural or synthetic]
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/31504—Composite [nonstructural laminate]
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/31504—Composite [nonstructural laminate]
    • Y10T428/31652—Of asbestos
    • Y10T428/31667—Next to addition polymer from unsaturated monomers, or aldehyde or ketone condensation product
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/31504—Composite [nonstructural laminate]
    • Y10T428/31855—Of addition polymer from unsaturated monomers

Landscapes

  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Mechanical Engineering (AREA)
  • Wrappers (AREA)
  • Laminated Bodies (AREA)
  • Packages (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Description

536474
技術領域 、本發明係有關於-種包裝材料，包含多數相互永久結合 ^ 2 ^層其中至少_層包含散钸之炭黑粒子以提供光遮 蔽㊆纟發明亦有關於—由用於光敏感產品之包裝材料 製成之包裝件。 背景技藝 上逑類型 < 包裝材料及包裝件於此技藝業已周知。例 2 ’、市售砥子藉由對此二層材料進行擠製/吹塑組合操作 製成。此等瓶子之材料具有一具有摻混炭黑粒子之hdpe 又2間層，以及位於中間層二侧之hdpe之外層。 壬白知瓶子例如用來盛放所謂UHT牛奶，此牛奶即為了 延長儲放壽命，以大約n5_15(rc熱處理約1β2秒，俾減 少或消除牛奶中有害微生物數目者。 、、由於牛奶係對光非常敏感之產品，其無法承受長期暴露 '光毒特別是暴露於紫外線光波範圍而不致於損壞，故 而二儲放牛奶於包裝件中使其在不必要情形下不暴露於周 圍環境之紫外射線極其重要。 m HDPE組成之塑膠層幾乎完全缺乏屏蔽光，特別是 屏蔽2外線 < 遮蔽性質，並因此無法單獨提供牛奶為儲放 達i斤而延長儲放筹命必要的光線保護。為了使習知瓶子可 長J儲放牛奶，將正常情形下為炭黑之光吸收材料加入包 裝2料中，此等粒子有效吸收，並因此防止光線自瓶子周 圍％境射入，防止其射透瓶子壁材，到達包裝之牛奶。 准厌黑粒子大量用於習知包裝材料使得中間層變得極 -4- A4規格(21“釐)_
裝 536474 2 五、發明説明（ 二其可由HDPE外層馬上透視，若中間層不遮蔽，即會 為瓿子V來不时人喜歡黑色外觀。為了遮蔽此種黑色中間 層，瓶子之HDPE外層遂著上足夠量之一白色之二氧化数 Τι〇2為免顏料，以遮蔽黑色中間層，並藉此為瓶子帶來更 吸引消費者之白色外觀。 二惟L習知三層材料之固有問題在於，如上所述，其需要 =大里的變黑用炭黑粒子於中間層以獲得所需光遮蔽性 二。同時亦對應地需要大量白色顏科（TiQ说外層以遮蔽 二：成的不當變黑。這會不必要’惟不可避免地增加 材科耗，並因此增加材料製造成本。 生的大量炭黑粒子的另一缺點在於，瓶子製程中產 生的廢料由於變得極黑，故無法直接回收於程序中，反而 =藉由添加白色顏料(Τ102)或其他白色著色物質先使立 俾可於程序中回收再用。這種處理牵涉到額外材料 發:二材料成本增加’常使得回收再用無利可圖。 因此，本發明基本目的在於 包裝材料，其無需大量炭黑來優所Ϊ類型之 需大量白色顏料(Τ102)或其他白色著7二生: 料白色外觀。 貝來Τ給包裝材 解決方案 徵::::::::擁範-項所載特 步賊有如後附申請專利範圍附；项所；=宜實施例進- 發明説明（ 發明概要 本發明係一驚人發現成果，其一充填礦物質之薄膜或薄 2在添加炭黑光吸收粒子下獲得協同效用增加之光遮 ::亚即’、已可藉由實驗證實，本身在防止不必要紫外線 坟上不充份I充填礦物質塑膠膜之固有光疊性質藉由 2添加極微量炭黑大幅改善，相較於習知技術，其僅‘微 =黑。可以說’在視覺上，本發明包裝材料之中間層僅變 、灰色，而習知包裝材料之中間層則完全變黑。 使用I發明獲得驚人協同％遮蔽效用f後的機制固炊 未完全澄清，惟可解釋成，光反射礦物質粒子因粒子反: 故延長中間層之光照射路徑，且光線與光吸收粒子撞擊以 及為其吸收之可能性因而增加。然而，此審論點不得视為 惟—可解釋得通者，反而應視為說明本發明作用之假雙。 无填礦物質中間層之材料包括一塑膠複合物及埋入— •I。有&反射材料4則含有一光吸收材料之複合 之粒子。 A實際基本複合物可含有諸如聚烯烴、聚酉旨、聚酰胺等適 ，塑膠’惟較佳者係業已用於市售瓶型包裝件之聚缔烴塑 膠。 此等聚埽烴例子有諸如高密度聚乙缔（HDPE)之聚乙 缔’以及均—暨共聚物類型：者之聚丙缔，例如根據ASTM (2·16 kg;23(TC)具有介於〇 5與5熔流指數之乙烯與丙浠 心共聚物，其係於包裝件領域業已周知且久為大家接收之 共聚物。 536474 A7 B7
五、發明説明（4 可使用微晶高嶺土、白雲石、碳酸鈣、白堊、滑石、兩 母、黏土等適當瓶子，惟較佳者使用白雲石來作為充填= 中間層之光反射礦物質’二者均可馬上購得，甚而獲准用 於食品包裝件。 根據本發明，一用於中間層之充填礦物質塑膠複合物例 子例如揭露於 EP 0 3 53 991、EP 〇 353 498、ep 〇 4f4 594 > EP 〇 494 0595 ^ EP 〇 5 12 364 ^ EP (9410543 9.7)^ EP (95926568.7)或 EP (96935679.9)。根據此等說明書，充 填礦物質之塑膠複合物宜包含一根據ASTM (2 16 2 = C )具有介於〇 · 5與5之熔流指數之乙烯與丙烯共聚物，以 及以无填礦物質之複合物總重之5〇至8〇%量混合於 複合物之白堊粒子D ^ 如前面所述，使用以極微量來與上述充填塑膠複合物一併 產生協合作用之炭黑粒子作為本發明包裝材料之中間層之Z 吸收材料。為了獲得所需光遮蔽，使用含量小至中間^總重 量之0.04-i%即足以有效防止光線，特別是紫外線傳遞1時 ，粒子僅將中間層顏色減至（變黑）一不顯眼程度。 於本發明一包裝材料較佳實施例中，中間層内本 微晶高嶺土、白雲石、CaC〇3、滑石、雲母、Μ等2 8 0 /〇填料粒子以及〇 · 〇4到^ %炭黑光吸收粒子構成。 本發明包裝材料之外塑膠層可以（但不一定須）含有與中 間層相同《塑膠複合物。惟由於較之使用不同塑膠複 《對應之不均—材料，均—材料有極大優點口 塑膠複合物於材料所含所有層中較佳。 用相同
W6474 五、發明説明（5 於材料所有層中具有相同複合物 使用既有加工設備藉由傳統擠製程序/ —材料可現成地 (黏接劑)或其他劑物來將共同擠：广需結合劑 起。 竹料層永久結合在一 附圖之簡單說明 以下參考附圖更詳細說明本發明，其中： 圖式係本發明一用於一瓶型 '、 示意橫剖視目。 1 〈己佳包裝材料之 元件符號說明 … 10 包裝材料 11 中間層 lla 塑膠複合物 lib 礦物質粒子 11c 厌黑粒子 12,13 外層 較佳實施例說明 與13 於圖式中一般標以參考符號10之包裝材料係三層構 造，含有一中間層11，以及位於中間層11二側之外層12 中間層11含有一塑膠複合物lla，大致均勻分佈於複合 物中I礦物質填料粒子（於圖示中方形係未充填者），以及 較佳地隨機散佈在礦物質粒子1 lb間複合物1 la中之炭黑 粒子1 lc(圖式中黑點）。 ” 如前面所述’中間層11中之複合物1 la基本上包含包 -8 536474 A7 -______B7 五、發明説明（6 ) 裝件領域中任一種塑膠，惟較佳者係聚烯烴類型。 中間層u中之礦物質粒+ llb亦可為例如微晶高嶺 土、白雲石、碳酸妈、滑石、雲母、優拉石（v〇iast〇ni⑷、 黏土等適當粒子㈣，惟於圖示料中，含有於包裝材料 中周知 < 白雲石，以及後段將馬上述及之聚晞烴塑膠。 礦物質粒子量可在複合物總重量的約3至8〇%極廣範圍 内變化。較佳地，中間層丨丨中白要量達到複合物總重量之 大約65%。較佳量使中間層丨丨具有良好剛性，且藉此以本 發明包裝材料1〇製成在形狀上穩固，易於操縱之瓶子。 如前面所述，一具有塑膠複合物及散佈於複合物中之礦 物質粒子之中間層本身擁有某一光遮蔽性質，其當然不足 以防止光線，特別是紫外線之傳遞，惟根據本發明，用來 獲得主要對紫外線之所需總勢疊最為有利。 為達到上述目的，中間層1 1包含炭黑光吸收粒子丨i C， 其與同時存在之礦物質粒子lib —起發揮一協同提高光遮 蔽之作用，且其甚至以極微量來實現一全面防止紫外線穿 經中間層之有效遮蔽。 中間層11中炭黑量大致在中間層總重量的0 04-1%範 圍内，此量在獲得上述協同效用上足夠大，同時在使中間 層不致於過度變黑上足夠小。 如中間層1 1，位於中間層1 1二侧之二外層丨2、i 3包括一 塑膠複合物，其原則上為出現在包裝件領域中之任何塑 膠。甚而’外層1 2與1 3可具有互異複合物，惟較佳者係具 有相同塑膠，尤佳者係此塑膠與中間層11之塑膠相同。於 -9- 本紙張尺度適用中國國家標準(CNS) A4規格(210X297公釐) 536474 A7 _____ B7 五、發明説明（7 ) 圖示之實施例中，此二層12、13各包括一聚烯烴塑膠，例 如一高密度聚乙烯，以及根據ASTM (2.16 kg; 23 0。〇具有 介於0.5與5間之熔流指數之乙晞與丙烯共聚物。 由於中間層1 1中之光吸收炭黑粒子u c帶給中間層—可 由二外層12及13看到的灰色調，故可儘量適當地（於某些 情形下按需要）遮蔽中間層丨][。因此，為達到此目的，將 白色顏料適當加入至少一層中，此層形成_包裝材料丨〇製成 之包裝件或瓶子外部。較佳地，將白色顏料加入中間層。 一較佳白色顏料係二氧化鈦（Ti〇2)。 由於中間層1 1中炭黑量極小，並因此中間層1 1僅略微 變黑’因此，使用極微量白色顏料（Ti〇2)於二外層12、13 或其一中即足以遮蔽中間層n。白色顏料之適當量可依中 間層11中炭黑相關量而定變化分別達外層與中間層總重 量之約5 %。 一由上述包裝材料10製成之瓶子可藉由擠製與吹塑之 組合作業製成。熟於此技藝人士業已周知此製造技術，且 其例如揭露於公告之瑞典專利申請案第95〇3537-4號中， 此相關案謹提及於此俾供參考。為獲得有關此製造技術之 進一步細節，請參考上述瑞典專利申請案。 使用上述方法，藉由組合擠壓與吹塑，以本發明包裝材 料製成之瓶子一般可有利用於光敏感產品，其經證實，用 於所渭UHT牛奶尤其有利，此牛奶可長時間儲存於瓶子 中達數周之久而不致因光線作用而損壞。甚而，瓶子輕易 且易於操縱，同時，固然於包裝材料中有炭黑，卻呈現吸 -10 -
536474 A7 B7 五 發明説明（8 ) 引消費者之白色外觀。 由以上說明可知，本發明以極簡單措施達成其目的，同 時可相較於習知技術以更低耗料並因此以更低材料成本 製成一包裝材料及包裝件。 包裝材料及以包裝材料製成之瓶型包裝件固然特定地 參考圖式所示實施例加以說明，惟本發明並不專限於此實 施例。熟於此技藝人士當知，可就個別細部作成多數不同 改變與修正，且在不悖離後附申請專利範圍所界定發明概 念下，不言而論，可達成此目的。 -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)

  1. 536474 Α8 Β8 C8 第088112540號專利申請案 g 中文申諸春利蔹圚替換本492本本^^8
    修正丨 々、申請專利範圍
    1. 一種包裝材料，其係單層或多層類型，包含至少一 為了提高光遮蔽之含有炭黑粒子（1 1C)之塑膠層（1 1) 者，特徵在於，含有炭黑之層（1 1)亦包含礦物質粒 子（1 1 b)，大致均勻散佈於此層之複合物（1 1 a)中； 於此層（1 1)中之礦物質粒子（1 1 b)量佔在此層總重 量之3與80%之間；且礦物質充填層（il)中之炭黑 量在複合物（11a)總重量的0.04與1%之間。 2. 如申請專利範圍第1項之包裝材料，其中含炭黑之 礦物質充填層（1 1)中之複合物（1 la)含有一聚婦烴 型塑膠。 3 .如申請專利範圍第1項之包裝材料，其中含炭黑之 礦物質充填層（1 1)中之複合物（1 1 a)含有一高密度 聚乙晞或一根據ASTM (216 kg ; 230°C )具有介於 0.5與5間之熔流指數之乙晞與丙婦共聚物。 4.如申請專利範圍第1項之包裝材料，其中塑膠外層 (1 2與1 3 )圍繞含炭黑之礦物質充填層（1 1)二側，該 外層（1 2與1 3 )無需結合劑或黏接劑於其中間即永 久結合於此層（1 1)。 5 .如申請專利範圍第4項之包裝材料，其中二外層（1 2 與13)含有與中間層（11)之塑膠相同之塑膠。 6. 如申請專利範圍第4項之包裝材料，其中二外層（12 與13)之一含有一白色顏色或其他白色著色劑，俾 至少自一方向遮蔽含炭黑之中間層（1 1)。 7. —種用於光敏感產品之包裝件，特徵在於，該包裝 本纸張尺度適用中國國家標準(CNS) A4規格(210 X 297公釐） 536474 as B8 C8 D8 六、申請專利範圍 件係藉由擠製與吹塑之組合作業，以申請專利範圍 第1項之包裝材料製成。 8.如申請專利範圍第7項之包裝件，其特徵在於該包 裝件係一瓶子。 本紙張尺度適用中國國家標準(CNS) A4規格(210X 297公釐)
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AU4661299A (en) 1999-12-13
BR9910657A (pt) 2001-01-30
US6866907B1 (en) 2005-03-15
CA2333060A1 (en) 1999-12-02
KR100663596B1 (ko) 2007-01-02
AP1577A (en) 2006-02-20
OA11555A (en) 2004-05-26
KR20010025082A (ko) 2001-03-26
JP2002516202A (ja) 2002-06-04
WO1999061245A1 (en) 1999-12-02
ES2228062T3 (es) 2005-04-01
ID26875A (id) 2001-02-15
AU741313B2 (en) 2001-11-29
AP2000001980A0 (en) 2000-12-31
EP1089877A1 (en) 2001-04-11
ZA200006472B (en) 2001-05-14
CO5070682A1 (es) 2001-08-28
DE69921655D1 (de) 2004-12-09
PT1089877E (pt) 2005-02-28
CN1302255A (zh) 2001-07-04
CA2333060C (en) 2006-05-16
SE9801809L (sv) 1999-11-23
JP4285908B2 (ja) 2009-06-24
AR019569A1 (es) 2002-02-27
RU2220891C2 (ru) 2004-01-10
SE518351C2 (sv) 2002-09-24
EP1089877B1 (en) 2004-11-03
CN1110409C (zh) 2003-06-04
WO1999061245A8 (en) 2001-03-01
SE9801809D0 (sv) 1998-05-22
DE69921655T2 (de) 2005-03-24
ATE281307T1 (de) 2004-11-15

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