TWI727698B - Multilayer film structure for packaging - Google Patents

Multilayer film structure for packaging Download PDF

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Publication number
TWI727698B
TWI727698B TW109108091A TW109108091A TWI727698B TW I727698 B TWI727698 B TW I727698B TW 109108091 A TW109108091 A TW 109108091A TW 109108091 A TW109108091 A TW 109108091A TW I727698 B TWI727698 B TW I727698B
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layer
adhesive
multilayer film
packaging
adhesive layer
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TW109108091A
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TW202134138A (en
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莊榮銜
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大全彩藝工業股份有限公司
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Priority to CN202010729929.3A priority patent/CN113386436A/en
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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
    • B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
    • 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
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/34—Layered products comprising a layer of synthetic resin comprising polyamides
    • 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
    • B32B33/00—Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
    • 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
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • 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
    • B65D65/00—Wrappers or flexible covers; Packaging materials of special type or form
    • B65D65/38—Packaging materials of special type or form
    • B65D65/40—Applications of laminates for particular packaging purposes
    • 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
    • B32B2250/00—Layers arrangement
    • B32B2250/24—All layers being polymeric
    • 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
    • B32B2307/70—Other properties
    • B32B2307/724—Permeability to gases, adsorption
    • B32B2307/7242—Non-permeable
    • B32B2307/7244—Oxygen barrier
    • 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
    • B32B2307/70—Other properties
    • B32B2307/724—Permeability to gases, adsorption
    • B32B2307/7242—Non-permeable
    • B32B2307/7246—Water vapor barrier

Abstract

本發明揭露一種用於包裝之多層薄膜結構，包含基材層、中間層及外覆層，基材層與中間層之間藉由第一黏著材而結合，中間層與外覆層之間藉由第二黏著材而結合，其中第一黏著材與第二黏著材中的至少其中一者係包含第一膠層及第二膠層，第一膠層係為水溶性PU及層狀結構物的複合材料，第二膠層係為溶劑型PU。本發明之多層薄膜結構具有提高阻隔性(包含水氣及氣體)的功效，可應用於作為食品或其他需要阻隔功能之包裝材料。The present invention discloses a multilayer film structure for packaging, comprising a substrate layer, an intermediate layer and an outer covering layer. The substrate layer and the intermediate layer are combined by a first adhesive material, and the intermediate layer and the outer covering layer are connected by It is combined by a second adhesive material, wherein at least one of the first adhesive material and the second adhesive material includes a first adhesive layer and a second adhesive layer, and the first adhesive layer is a water-soluble PU and a layered structure For composite materials, the second adhesive layer is solvent-based PU. The multilayer film structure of the present invention has the effect of improving barrier properties (including moisture and gas), and can be applied as food or other packaging materials that require barrier functions.

Description

用於包裝之多層薄膜結構Multilayer film structure for packaging

本發明係關於一種用於包裝之多層薄膜結構，可應用為高溫殺菌袋的多層薄膜結構，但不限於此包材結構使用。The present invention relates to a multi-layer film structure for packaging, which can be applied as a multi-layer film structure of a high-temperature sterilization bag, but is not limited to this packaging material structure.

產品包裝，依據內裝物的不同，需要達成某些特定的規格特性。舉例而言，以食品(生食、熟食或微波食品等)的包裝袋為例，其大部分需要具備防潮、阻隔空氣、耐高溫、表面可印刷、可熱封成袋等需求。Product packaging, depending on the contents, needs to achieve certain specifications and characteristics. For example, take the packaging bags of food (raw food, cooked food or microwave food, etc.) as an example, most of them need to have moisture-proof, air-blocking, high-temperature resistance, surface-printable, and heat-sealable bags.

其中，現有的食品包裝袋係大部分以PET(polyethylene terephthalate)、OPP (Oriented polypropylene) 或尼龍(Nylon)為基材，並與鋁箔層、CPP(cast polypropylene)層、L-LDPE(Liner-low density polyethylene)另一層或多層材料之間黏合形成之複合材加工製成。然而，現有的技術中，在可耐高溫的包裝袋應用上，仍難以兼顧高阻氣性的需求。Among them, most of the existing food packaging bags are based on PET (polyethylene terephthalate), OPP (Oriented polypropylene) or nylon (Nylon), and are combined with aluminum foil layer, CPP (cast polypropylene) layer, L-LDPE (Liner-low Density polyethylene) is a composite material formed by bonding another layer or multiple layers of materials. However, in the existing technology, it is still difficult to meet the requirements of high gas barrier properties in the application of high temperature resistant packaging bags.

本發明之一目的在於公開一種可提升阻隔性的用於包裝之多層薄膜結構應用。One purpose of the present invention is to disclose a multilayer film structure application for packaging that can improve barrier properties.

為達上述目的及其他目的，本發明提出一種用於包裝之多層薄膜結構，包含一基材層、一中間層及一外覆層，該基材層與該中間層之間藉由一第一黏著材而結合，該中間層與該外覆層之間藉由一第二黏著材而結合，其特徵在於：該第一黏著材與該第二黏著材中的至少其中一者係包含一第一膠層及一第二膠層，該第一膠層係為水溶性PU(Polyurethane Dispersion, PUD)及層狀結構物的複合材料，該第二膠層係為溶劑型PU。To achieve the above and other objectives, the present invention provides a multilayer film structure for packaging, including a substrate layer, an intermediate layer, and an overcoat layer. A first layer is formed between the substrate layer and the intermediate layer. Adhesive material is combined, the intermediate layer and the outer coating layer are combined by a second adhesive material, characterized in that: at least one of the first adhesive material and the second adhesive material includes a first A glue layer and a second glue layer. The first glue layer is a composite material of water-soluble PU (Polyurethane Dispersion, PUD) and a layered structure, and the second glue layer is a solvent PU.

於本發明之一實施例中，該層狀結構物可具有長徑比50-500。In an embodiment of the present invention, the layered structure may have an aspect ratio of 50-500.

於本發明之一實施例中， 該層狀結構物對該第一膠層的重量百分比係可在0.1%至20%的範圍內。In an embodiment of the present invention, the weight percentage of the layered structure to the first adhesive layer may be in the range of 0.1% to 20%.

於本發明之一實施例中， 該外覆層的材質係可為CPP(cast polypropylene)、PET(polyethylene terephthalate) 或L-LDPE(Liner-low density polyethylene)。In an embodiment of the present invention, the material of the outer covering layer may be CPP (cast polypropylene), PET (polyethylene terephthalate) or L-LDPE (Liner-low density polyethylene).

於本發明之一實施例中，該基材層的材質可為PET(polyethylene terephthalate)、PP(polypropylene)、PE(polyethylene)、玻璃紙(Cellophene)、尼龍(Oriented Nylon)或OPP (Oriented Polypropylene)。In an embodiment of the present invention, the material of the substrate layer may be PET (polyethylene terephthalate), PP (polypropylene), PE (polyethylene), cellophane (Cellophene), nylon (Oriented Nylon) or OPP (Oriented Polypropylene).

於本發明之一實施例中，該中間層的材質為尼龍(Oriented Nylon)、PET(polyethylene terephthalate)、OPP (Oriented polypropylene)或玻璃紙(Cellophenen)。In an embodiment of the present invention, the material of the intermediate layer is Oriented Nylon, PET (polyethylene terephthalate), OPP (Oriented polypropylene) or cellophane (Cellophenen).

於本發明之一實施例中，該層狀結構物的材質為黏土(Clay)。In an embodiment of the present invention, the material of the layered structure is clay.

於本發明之一實施例中，該第一黏著材與該第二黏著材可皆包含該第一膠層及該第二膠層。In an embodiment of the present invention, the first adhesive material and the second adhesive material may both include the first adhesive layer and the second adhesive layer.

於本發明之一實施例中，該第二黏著材係可僅包含該第二膠層。In an embodiment of the present invention, the second adhesive material may only include the second adhesive layer.

於本發明之一實施例中，該第一黏著材係可僅包含該第二膠層。In an embodiment of the present invention, the first adhesive material may only include the second adhesive layer.

據此，本發明之實施例揭露的多層薄膜結構，係具有提高阻隔性功效，使得內裝物與外部的水氣、氧氣之間被有效的隔離，而可應用於作為各種類型的食品(乾燥食品、微波食品、冷凍食品)、化妝品、保養品、醫用品、日常用品或電子產品之外包裝材料。Accordingly, the multilayer film structure disclosed in the embodiment of the present invention has the effect of improving the barrier properties, so that the contents are effectively isolated from the external moisture and oxygen, and can be used as various types of food (dry Food, microwave food, frozen food), cosmetics, skin care products, medical supplies, daily necessities or packaging materials for electronic products.

為充分瞭解本發明之目的、特徵及功效，茲藉由下述具體之實施例，並配合所附之圖式，對本發明做一詳細說明，說明如後：In order to fully understand the purpose, features and effects of the present invention, the following specific embodiments are used to illustrate the present invention in detail with the accompanying drawings. The description is as follows:

於本文中，所描述之用語「一」或「一個」來描述結構、部位或區域等。此舉只是為了方便說明，並且對本發明之範疇提供一般性的意義。因此，除非很明顯地另指他意，否則此種描述應理解為包括一個或至少一個，且單數也同時包括複數。In this article, the term "one" or "one" is used to describe structures, parts or regions. This is just for the convenience of description and provides a general meaning to the scope of the present invention. Therefore, unless it is clearly stated otherwise, this description should be understood to include one or at least one, and the singular number also includes the plural number.

於本文中，所描述之用語「包含、包括、具有」或其他任何類似用語意係非僅限於本文所列出的此等要件而已，而是可包括未明確列出但卻是所述結構、部位或區域通常固有的其他要件。In this article, the term "including, including, having" or any other similar terminology is not limited to the elements listed in this article, but may include the structure, Other elements usually inherent in a location or area.

於本文中，所描述之「第一」或「第二」等類似序數之詞語，係用以區分或指關聯於相同或類似的元件或結構，且不必然隱含此等結構、部位或區域在空間上的順序。應了解的是，在某些情況或配置下，序數詞語係可交換使用而不影響本發明之實施。In this article, the terms "first" or "second" and other similar ordinal numbers are used to distinguish or refer to the same or similar elements or structures, and do not necessarily imply these structures, parts or regions The order in space. It should be understood that, in some situations or configurations, ordinal numbers can be used interchangeably without affecting the implementation of the present invention.

請參照圖1，其係為本發明第一實施例的用於包裝之多層薄膜結構的示意圖。Please refer to FIG. 1, which is a schematic diagram of the multilayer film structure for packaging according to the first embodiment of the present invention.

本實施例之多層薄膜結構1，主要係包含一基材層10、一中間層20及一外覆層30，該基材層10與該中間層20之間藉由一第一黏著材40而黏貼結合，該中間層20與該外覆層30之間藉由一第二黏著材50而黏貼結合。其中，該第一黏著材40與該第二黏著材50中的至少其中一者係包含一第一膠層A及一第二膠層B，該第一膠層A係為水溶性PU(Polyurethane Dispersion, PUD)及層狀結構物的複合材料，該第二膠層B係為溶劑型PU。圖1的實施例中係以該第一黏著材40包含該第一膠層A及該第二膠層B作為示例。The multilayer film structure 1 of this embodiment mainly includes a substrate layer 10, an intermediate layer 20, and an overcoat layer 30. The substrate layer 10 and the intermediate layer 20 are formed between the substrate layer 10 and the intermediate layer 20 by a first adhesive material 40. Adhesive bonding, the middle layer 20 and the outer covering layer 30 are bonded together by a second adhesive material 50. Wherein, at least one of the first adhesive material 40 and the second adhesive material 50 includes a first adhesive layer A and a second adhesive layer B. The first adhesive layer A is made of water-soluble PU (Polyurethane Dispersion, PUD) and a composite material of layered structure, the second adhesive layer B is solvent-based PU. In the embodiment of FIG. 1, the first adhesive material 40 includes the first adhesive layer A and the second adhesive layer B as an example.

本實施例中，該外覆層30的材質係可例如為CPP(cast polypropylene)、PET(polyethylene terephthalate)或L-LDPE(Liner-low density polyethylene)或其他薄膜材質，但並不限於此。該基材層10可例如為PET、PP(polypropylene)、PE(polyethylene)、玻璃紙(Cellophene)、尼龍(Oriented Nylon)或OPP (Oriented Polypropylene) ，但並不限於此，該基材層10上係可具有印刷層、電鍍層、或紙類。該中間層20的材質可為尼龍(Oriented Nylon)、 PET(polyethylene terephthalate) 、OPP (Oriented polypropylene)或其他已延伸材質，但並不限於此。In this embodiment, the material of the outer covering layer 30 can be, for example, CPP (cast polypropylene), PET (polyethylene terephthalate), L-LDPE (Liner-low density polyethylene) or other film materials, but it is not limited thereto. The substrate layer 10 can be, for example, PET, PP (polypropylene), PE (polyethylene), cellophane (Cellophene), nylon (Oriented Nylon) or OPP (Oriented Polypropylene), but it is not limited thereto. It can have a printing layer, an electroplating layer, or paper. The material of the intermediate layer 20 can be nylon (Oriented Nylon), PET (polyethylene terephthalate), OPP (Oriented polypropylene) or other extended materials, but is not limited to this.

如圖2所示，其係為第一膠層中該層狀結構物均勻分布的結構示意圖。As shown in FIG. 2, it is a schematic diagram of the structure in which the layered structure is uniformly distributed in the first adhesive layer.

本實施例之第一膠層A中，該水溶性PU 200係可為聚氨酯樹脂(urethane resin)與水的混合物。In the first adhesive layer A of this embodiment, the water-soluble PU 200 may be a mixture of urethane resin and water.

本實施例之第一膠層A中，該層狀結構物100係可為複數個改質或未改質的層狀結構物，其材質係可為但不限於黏土(Clay)，這些層狀結構物具有一種或一種以上之長徑比，其係可先混摻於去離水(de-ionized water)中，再加入水溶性PU 200後攪拌混合後，線性塗佈於該中間層20上。此外，第一膠層A係可被選擇性地線性塗佈於基材層、中間層、或外覆層上，形成前述之該第一黏著材40與該第二黏著材50中的至少其中一者。In the first adhesive layer A of this embodiment, the layered structure 100 can be a plurality of modified or unmodified layered structures, and the material can be but not limited to clay. These layered structures The structure has one or more aspect ratios, which can be mixed in de-ionized water first, and then the water-soluble PU 200 is added, stirred and mixed, and then linearly coated on the intermediate layer 20. In addition, the first adhesive layer A can be selectively linearly coated on the substrate layer, the intermediate layer, or the outer coating layer to form at least one of the aforementioned first adhesive material 40 and the second adhesive material 50 One.

該層狀結構物100較佳係具有長徑比50-500，且該層狀結構物100對該第一膠層A的重量百分比係可在0.1至20%的範圍內，該層狀結構物100能以奈米級尺寸分散於水溶性PU 200中，呈現堆疊交錯排列的型態，而使得氣體穿透路徑被加長或複雜化，進而產生氣體阻隔的效果。The layered structure 100 preferably has an aspect ratio of 50-500, and the weight percentage of the layered structure 100 to the first adhesive layer A can be in the range of 0.1 to 20%. The layered structure 100 can be dispersed in water-soluble PU 200 in nanometer size, presenting a stacked staggered arrangement, which makes the gas penetration path lengthened or complicated, thereby producing a gas barrier effect.

藉此，以本實施例之多層薄膜結構應用於產品包裝袋時，外部的氣體或液體較難以穿透而進入包裝袋之內，可避免水氣的進入造成內裝物的氧化，進而滿足一定的保存期，亦可兼顧包裝袋透明的需求，因此可適用於包裝乾燥食品、微波食品、冷凍食品、醫用品、日常用品、電子零件等產品的高溫殺菌袋。As a result, when the multilayer film structure of this embodiment is applied to a product packaging bag, external gas or liquid is more difficult to penetrate and enters the packaging bag, which can prevent the ingress of moisture from causing oxidation of the contents, thereby satisfying certain requirements. The shelf life of the product can also take into account the need for transparent packaging, so it can be suitable for high-temperature sterilization bags for packaging dry food, microwave food, frozen food, medical supplies, daily necessities, electronic parts and other products.

於上述第一實施例中(請參照圖1)，該第一黏著材40係包含該第一膠層A及該第二膠層B，而該第二黏著材50係可僅包含該第二膠層B，其係可具有提高包裝袋阻氣性的功效。然其係不限於此，本發明亦可變化實施為該第一黏著材40係僅包含該第二膠層B，而該第二黏著材50係包含該第一膠層A及該第二膠層B。In the above-mentioned first embodiment (please refer to FIG. 1), the first adhesive material 40 includes the first adhesive layer A and the second adhesive layer B, and the second adhesive material 50 may only include the second adhesive layer. Adhesive layer B, which has the effect of improving the gas barrier properties of the packaging bag. However, the system is not limited to this, and the present invention can also be modified and implemented as the first adhesive material 40 includes only the second adhesive layer B, and the second adhesive material 50 includes the first adhesive layer A and the second adhesive Layer B.

以下以實驗範例說明本發明如下，然而，下列各實驗範例僅供用以瞭解本發明而已，並非用以限制本發明。The following experiment examples are used to illustrate the present invention as follows. However, the following experimental examples are only for understanding the present invention, and are not intended to limit the present invention.

[實施例1][Example 1]

將具有長徑比300-500的層狀黏土PGN(美國Nanocor公司)先混摻於去離水中，再加入水溶性PU後攪拌混合以形成第一膠層，以此第一膠層塗佈於作為基材層之12微米的PET薄膜上，烘乾備用。The layered clay PGN (Nanocor, USA) with a length-to-diameter ratio of 300-500 is mixed in the deionized water first, and then water-soluble PU is added and then stirred and mixed to form the first adhesive layer, and then the first adhesive layer is coated on On the 12-micron PET film as the base layer, dry it for later use.

採用60微米的CPP薄膜作為外覆層，並採用15微米的尼龍6作為中間層。A 60-micron CPP film is used as the outer cover, and a 15-micron nylon 6 is used as the middle layer.

將第二黏著材之溶劑型PU用線棒塗覆在CPP薄膜上，與尼龍6薄膜貼合形成CPP//PA6複合膜。然後，再以作為第二膠層之溶劑型PU塗覆在複合膜的尼龍6表面，以貼覆前述之具有第一膠層的PET薄膜，形成CPP//PA6//PET積層薄膜。The solvent-based PU of the second adhesive material is coated on the CPP film with a wire rod, and bonded with the nylon 6 film to form a CPP//PA6 composite film. Then, the solvent-based PU as the second adhesive layer is coated on the surface of the nylon 6 of the composite film to cover the aforementioned PET film with the first adhesive layer to form a CPP//PA6//PET laminated film.

此積層薄膜的氧氣穿透率為12 c.c/m 2-day-atm。 The oxygen transmission rate of this laminated film is 12 cc/m 2 -day-atm.

[實施例2][Example 2]

將具有長徑比50-100的層狀黏土NSP(台灣多鏈科技公司)先混摻於去離水中，再加入水溶性PU後攪拌混合以形成第一膠層，以此第一膠層塗佈於作為基材層之12微米的PET薄膜上，烘乾備用。The layered clay NSP (Taiwan Multichain Technology Co., Ltd.) with a length-to-diameter ratio of 50-100 is first mixed with deionized water, and then water-soluble PU is added and then stirred and mixed to form the first adhesive layer. Place it on the 12-micron PET film as the base layer and dry it for later use.

採用60微米的CPP薄膜作為外覆層，並採用15微米的尼龍6作為中間層。A 60-micron CPP film is used as the outer cover, and a 15-micron nylon 6 is used as the middle layer.

將第二黏著材之溶劑型PU用線棒塗覆在CPP薄膜上，與尼龍6薄膜貼合形成CPP//PA6複合膜。然後，再以作為第二膠層之溶劑型PU塗覆在複合膜的尼龍6表面，以貼覆前述之具有第一膠層的PET薄膜，形成CPP//PA6//PET積層薄膜。The solvent-based PU of the second adhesive material is coated on the CPP film with a wire rod, and bonded with the nylon 6 film to form a CPP//PA6 composite film. Then, the solvent-based PU as the second adhesive layer is coated on the surface of the nylon 6 of the composite film to cover the aforementioned PET film with the first adhesive layer to form a CPP//PA6//PET laminated film.

此積層薄膜的氧氣穿透率測得為18 c.c/m 2-day-atm。 The oxygen transmission rate of this laminated film was measured to be 18 cc/m 2 -day-atm.

[比較例][Comparative example]

將溶劑型PU用線棒塗覆在60微米的CPP薄膜上，以15微米的尼龍6薄膜貼合形成CPP//PA6複合膜，再以溶劑型PU塗覆在複合膜的尼龍6表面，取12微米的PET薄膜貼覆，形成CPP//PA6//PET積層薄膜。Coat the solvent-based PU with a wire rod on a 60-micron CPP film, bond it with a 15-micron nylon 6 film to form a CPP//PA6 composite film, and then coat the nylon 6 surface of the composite film with solvent-based PU. The 12-micron PET film is laminated to form a CPP//PA6//PET laminated film.

此積層薄膜的氧氣穿透率為68 c.c/m 2-day-atm。 The oxygen transmission rate of this laminated film is 68 cc/m 2 -day-atm.

是以，前述實施例1及2的阻隔效果明顯優於比較例。Therefore, the barrier effect of the foregoing Examples 1 and 2 is significantly better than that of the Comparative Example.

請參照圖3，其係為本發明第二實施例的用於包裝之多層薄膜結構的示意圖。本實施例中，該第一黏著材40與該第二黏著材50皆包含該第一膠層A及該第二膠層B，亦可具有提高阻隔性的效果。Please refer to FIG. 3, which is a schematic diagram of a multilayer film structure for packaging according to a second embodiment of the present invention. In this embodiment, the first adhesive material 40 and the second adhesive material 50 both include the first adhesive layer A and the second adhesive layer B, which can also have the effect of improving barrier properties.

據此，於本發明實施例中，該第一黏著材40與該第二黏著材50可為包含該第一膠層A及該第二膠層B的結構，且該第一膠層A係為水溶性PU 200及層狀結構物100的複合材料，藉由該第一膠層A來提供提高阻隔水氣的功效，並藉由該第二膠層B來提供黏合的功能作用，同時，亦可兼顧包裝袋透明的需求。Accordingly, in the embodiment of the present invention, the first adhesive material 40 and the second adhesive material 50 may have a structure including the first adhesive layer A and the second adhesive layer B, and the first adhesive layer A is It is a composite material of water-soluble PU 200 and layered structure 100. The first adhesive layer A provides the effect of improving moisture barrier, and the second adhesive layer B provides the function of adhesion. At the same time, It can also take into account the need for transparent packaging.

綜上所述，本發明揭露之第一實施例與第二實施例的多層薄膜結構，係具有提高阻隔水氣的功效，使得內裝物與外部的水氣、氧氣之間被有效的隔離，而可應用於作為各種類型的食品(乾燥食品、微波食品、冷凍食品)、化妝品、保養品、醫用品、日常用品或電子產品之外包裝材料。In summary, the multilayer film structure of the first embodiment and the second embodiment disclosed in the present invention has the effect of improving the moisture barrier, so that the contents are effectively isolated from the external moisture and oxygen. It can be used as a packaging material for various types of food (dry food, microwave food, frozen food), cosmetics, skin care products, medical supplies, daily necessities or electronic products.

本發明在上文中已以較佳實施例揭露，然熟習本項技術者應理解的是，該實施例僅用於描繪本發明，而不應解讀為限制本發明之範圍。應注意的是，舉凡與該實施例等效之變化與置換，均應設為涵蓋於本發明之範疇內。因此，本發明之保護範圍當以申請專利範圍所界定者為準。The present invention has been disclosed in a preferred embodiment above, but those skilled in the art should understand that the embodiment is only used to describe the present invention and should not be construed as limiting the scope of the present invention. It should be noted that all changes and substitutions equivalent to this embodiment should be included in the scope of the present invention. Therefore, the protection scope of the present invention should be defined by the scope of the patent application.

10:基材層 20:中間層 30:外覆層 40:第一黏著材 50:第二黏著材 200:水溶性PU 100:層狀結構物 A:第一膠層 B:第二膠層10: Substrate layer 20: middle layer 30: Outer cladding 40: The first adhesive material 50: second adhesive material 200: Water-soluble PU 100: layered structure A: The first adhesive layer B: The second adhesive layer

[圖1]為本發明第一實施例的用於包裝之多層薄膜結構的示意圖。 [圖2]為第一膠層中該層狀結構物均勻分布的結構示意圖。 [圖3]為本發明第二實施例的用於包裝之多層薄膜結構的示意圖。 [Figure 1] is a schematic diagram of a multilayer film structure for packaging according to the first embodiment of the present invention. [Figure 2] is a schematic diagram of the uniform distribution of the layered structure in the first adhesive layer. [Fig. 3] is a schematic diagram of a multilayer film structure for packaging according to a second embodiment of the present invention.

10:基材層 10: Substrate layer

20:中間層 20: middle layer

30:外覆層 30: Outer cladding

40:第一黏著材 40: The first adhesive material

50:第二黏著材 50: second adhesive material

A:第一膠層 A: The first adhesive layer

B:第二膠層 B: The second adhesive layer

Claims (10)

一種用於包裝之多層薄膜結構，包含一基材層、一中間層及一外覆層，該基材層與該中間層之間藉由一第一黏著材而結合，該中間層與該外覆層之間藉由一第二黏著材而結合，其特徵在於： 該第一黏著材與該第二黏著材中的至少其中一者係包含一第一膠層及一第二膠層，該第一膠層係為水溶性PU(Polyurethane Dispersion, PUD)及層狀結構物的複合材料，該第二膠層係為溶劑型PU。 A multilayer film structure for packaging, comprising a substrate layer, an intermediate layer and an outer covering layer. The substrate layer and the intermediate layer are bonded by a first adhesive material. The intermediate layer and the outer The cladding layers are combined by a second adhesive material, which is characterized by: At least one of the first adhesive material and the second adhesive material includes a first adhesive layer and a second adhesive layer, and the first adhesive layer is water-soluble PU (Polyurethane Dispersion, PUD) and layered In the composite material of the structure, the second adhesive layer is solvent-based PU. 如請求項1所述之用於包裝之多層薄膜結構，其中該層狀結構物具有長徑比50-500。The multilayer film structure for packaging according to claim 1, wherein the layered structure has an aspect ratio of 50-500. 如請求項2所述之用於包裝之多層薄膜結構，其中該層狀結構物對該第一膠層的重量百分比係在0.1%至20%的範圍內。The multilayer film structure for packaging according to claim 2, wherein the weight percentage of the layered structure to the first adhesive layer is in the range of 0.1% to 20%. 如請求項3所述之用於包裝之多層薄膜結構，其中該外覆層的材質係為CPP(cast polypropylene)、PET(polyethylene terephthalate) 或L-LDPE(Liner-low density polyethylene)。The multilayer film structure for packaging as described in claim 3, wherein the material of the outer covering layer is CPP (cast polypropylene), PET (polyethylene terephthalate) or L-LDPE (Liner-low density polyethylene). 如請求項4所述之用於包裝之多層薄膜結構，其中該基材層的材質為PET(polyethylene terephthalate)、PP(polypropylene)、PE(polyethylene)、玻璃紙(Cellophene)、尼龍(Oriented Nylon)或OPP (Oriented Polypropylene)。The multilayer film structure for packaging as described in claim 4, wherein the material of the substrate layer is PET (polyethylene terephthalate), PP (polypropylene), PE (polyethylene), cellophane (Cellophene), nylon (Oriented Nylon) or OPP (Oriented Polypropylene). 如請求項3所述之用於包裝之多層薄膜結構，其中該中間層的材質為尼龍(Oriented Nylon)、PET(polyethylene terephthalate) 或OPP (Oriented polypropylene)。The multilayer film structure for packaging as described in claim 3, wherein the material of the intermediate layer is nylon (Oriented Nylon), PET (polyethylene terephthalate) or OPP (Oriented polypropylene). 如請求項3所述之用於包裝之多層薄膜結構，其中該層狀結構物的材質為黏土(Clay)。The multilayer film structure for packaging as described in claim 3, wherein the material of the layered structure is clay. 如請求項3所述之用於包裝之多層薄膜結構，其中該第一黏著材與該第二黏著材皆包含該第一膠層及該第二膠層。The multilayer film structure for packaging according to claim 3, wherein the first adhesive material and the second adhesive material both include the first adhesive layer and the second adhesive layer. 如請求項3所述之用於包裝之多層薄膜結構，其中該第二黏著材係僅包含該第二膠層。The multilayer film structure for packaging according to claim 3, wherein the second adhesive material only includes the second adhesive layer. 如請求項3所述之用於包裝之多層薄膜結構，其中該第一黏著材係僅包含該第二膠層。The multilayer film structure for packaging according to claim 3, wherein the first adhesive material only includes the second adhesive layer.
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Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TW509625B (en) * 1998-04-01 2002-11-11 Tetra Laval Holdings & Amp Fin A laminated packaging material, method of manufacturing of said laminated material and packaging containers produced therefrom

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TW509625B (en) * 1998-04-01 2002-11-11 Tetra Laval Holdings & Amp Fin A laminated packaging material, method of manufacturing of said laminated material and packaging containers produced therefrom

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