TW201430188A - Microwavable sheet and process for manufacturing microwavable sheet - Google Patents

Microwavable sheet and process for manufacturing microwavable sheet Download PDF

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Publication number
TW201430188A
TW201430188A TW102145728A TW102145728A TW201430188A TW 201430188 A TW201430188 A TW 201430188A TW 102145728 A TW102145728 A TW 102145728A TW 102145728 A TW102145728 A TW 102145728A TW 201430188 A TW201430188 A TW 201430188A
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Taiwan
Prior art keywords
microwave oven
resin layer
sheet
base paper
resin
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Application number
TW102145728A
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Chinese (zh)
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TWI532897B (en
Inventor
Koichi Sawada
Tadashi Akamatsu
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Keiwa Inc
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Publication of TW201430188A publication Critical patent/TW201430188A/en
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Publication of TWI532897B publication Critical patent/TWI532897B/en

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    • DTEXTILES; PAPER
    • D21PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21HPULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H27/00Special paper not otherwise provided for, e.g. made by multi-step processes
    • D21H27/10Packing paper
    • 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
    • B65D65/00Wrappers or flexible covers; Packaging materials of special type or form
    • B65D65/38Packaging materials of special type or form
    • B65D65/40Applications of laminates for particular packaging purposes
    • 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
    • B65D81/00Containers, 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
    • B65D81/34Containers, 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
    • B65D81/3446Containers, 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
    • B65D81/3453Rigid containers, e.g. trays, bottles, boxes, cups
    • DTEXTILES; PAPER
    • D21PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21HPULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H19/00Coated paper; Coating material
    • D21H19/10Coatings without pigments
    • D21H19/14Coatings without pigments applied in a form other than the aqueous solution defined in group D21H19/12
    • DTEXTILES; PAPER
    • D21PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21HPULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H19/00Coated paper; Coating material
    • D21H19/80Paper comprising more than one coating
    • D21H19/84Paper comprising more than one coating on both sides of the substrate
    • DTEXTILES; PAPER
    • D21PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21HPULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H23/00Processes or apparatus for adding material to the pulp or to the paper
    • D21H23/02Processes or apparatus for adding material to the pulp or to the paper characterised by the manner in which substances are added
    • D21H23/22Addition to the formed paper
    • D21H23/52Addition to the formed paper by contacting paper with a device carrying the material
    • D21H23/56Rolls
    • D21H23/58Details thereof, e.g. surface characteristics, peripheral speed
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00Stock material or miscellaneous articles
    • Y10T428/24Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24273Structurally defined web or sheet [e.g., overall dimension, etc.] including aperture
    • Y10T428/24322Composite web or sheet

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Food Science & Technology (AREA)
  • Laminated Bodies (AREA)
  • Paper (AREA)
  • Package Specialized In Special Use (AREA)

Abstract

The present invention provides: a microwavable sheet in which the penetration of oil to the exterior surface can be inhibited and which exhibits excellent moisture permeability and a process for manufacturing the microwavable sheet. The microwavable sheet is provided with a base paper and a resin layer which is laminated on one surface of the base paper by applying a coating fluid that contains a resin composition, said resin layer having multiple pores. It is preferable that the microwavable sheet exhibits a moisture permeability of 200 to 15000g/m224hr. The microwavable sheet may be manufactured by: applying the coating fluid to one surface of the base paper with a roller which has recessed parts on the surface; and thus forming the pores. Alternatively, the microwavable sheet may be manufactured by: applying the coating fluid to one fine rugged surface of the base paper and thus forming the pores.

Description

適合微波爐的片材及適合微波爐的片材的製造方法 Sheet suitable for microwave oven and method for manufacturing sheet suitable for microwave oven

本發明涉及適合微波爐的片材及適合微波爐的片材的製造方法。 The present invention relates to a sheet suitable for a microwave oven and a method for producing a sheet suitable for a microwave oven.

以往以來,作為包裝各種食品時使用的片材,有能包裝油炸食品等含油分多的食品的、具有耐油性的片材。作為這種片材,習知的有用於包裝含油分多的食品的耐油紙(日本專利公開公報特開2006-183221號)。 In the past, as a sheet used for packaging various foods, there is a sheet having oil resistance which can package foods containing a large amount of oil such as fried foods. As such a sheet, an oil-resistant paper for packaging a food containing a large amount of oil is known (Japanese Patent Laid-Open Publication No. 2006-183221).

所述耐油紙在紙支承體的至少一個面上,具有含有氫鍵型樹脂和吸油性顆粒的樹脂層,耐油性優異。 The oil-resistant paper has a resin layer containing a hydrogen bond type resin and oil absorbing particles on at least one surface of the paper support, and is excellent in oil resistance.

可是,所述耐油紙為了確保耐油性而具有樹脂層,存在有可能因所述樹脂層而導致透濕性受到損害的問題。因此,在包裝油炸食品等食品時,如果在包裝食品後經過一定的時間,則由於片材內的水蒸氣不能釋放到片材外而在包裝的食品的表面結露,從而存在有可能不能維持被包裝的食品的品質的問題。此外,當用微波爐直接加熱處於包裝狀態的食品時,也存在片材內的水蒸氣不能釋放導致水分附著在食品的表面從而使食品的品質劣化的問題。 However, the oil-resistant paper has a resin layer in order to secure oil resistance, and there is a possibility that moisture permeability is impaired due to the resin layer. Therefore, when packaging foods such as fried foods, if a certain period of time elapses after packaging the food, the water vapor in the sheet cannot be released to the outside of the sheet and dew on the surface of the packaged food, which may not be maintained. The problem of the quality of the food being packaged. Further, when the foodstuff in a packaged state is directly heated by a microwave oven, there is also a problem that water vapor in the sheet cannot be released, causing moisture to adhere to the surface of the foodstuff, thereby deteriorating the quality of the foodstuff.

現有技術文獻 Prior art literature

專利文獻1:日本專利公開公報特開2006-183221號 Patent Document 1: Japanese Patent Laid-Open Publication No. 2006-183221

本發明是鑒於所述的問題而做出的發明,本發明的目的是提供一種防止油向外表面滲透且透濕性優異的適合微波爐的片材和適合微波爐的片材的製造方法。 The present invention has been made in view of the above problems, and an object of the present invention is to provide a sheet suitable for a microwave oven and a method for producing a sheet suitable for a microwave oven which are excellent in moisture permeability and which are excellent in moisture permeability.

為了解決所述的問題,本發明提供一種適合微波爐的片材,其具備基紙以及樹脂層,通過在所述基紙的一個面上塗布樹脂組合物的塗布液,所述樹脂層層疊在所述基紙的一個面上,所述樹脂層具有多個氣孔。 In order to solve the above problems, the present invention provides a sheet suitable for a microwave oven comprising a base paper and a resin layer, the resin layer being laminated on the one surface of the base paper by coating a coating liquid of the resin composition On one side of the base paper, the resin layer has a plurality of pores.

由於所述適合微波爐的片材在基紙的一個面上具備樹脂層,所以油難以滲透。此外,由於所述樹脂層是通過在所述基紙的一個面上塗布樹脂組合物的塗布液而適當形成有多個氣孔,所以能夠在抑制所述的油的滲透的同時利用所述氣孔使水蒸氣很好地透過。這種適合微波爐的片材,由於在確保所述的耐油性的同時具有優異的透濕性,所以即使當用微波爐對用所述適合微波爐的片材包裝後的油炸食品和漢堡包等食品直接在包裝狀態下進行加熱處理時,也能夠在抑制油的滲透的同時釋放出水蒸氣,所以由於抑制了水滴向食品表面的附著,所以能夠減小損害口感的問題。 Since the sheet suitable for the microwave oven is provided with a resin layer on one surface of the base paper, the oil is hard to permeate. Further, since the resin layer is formed by appropriately coating a coating liquid of a resin composition on one surface of the base paper, it is possible to use the pores while suppressing the permeation of the oil. Water vapor is well transmitted. Such a sheet suitable for a microwave oven has excellent moisture permeability while ensuring the oil resistance, so that even when a microwave oven is used for foods such as fried foods and hamburgers packaged with the sheet suitable for the microwave oven When the heat treatment is performed in the packaged state, the water vapor can be released while suppressing the penetration of the oil. Therefore, since the adhesion of the water droplets to the surface of the food is suppressed, the problem of impairing the texture can be reduced.

此外,優選的是,所述的適合微波爐的片材的透濕度為200g/m224hr以上15000g/m224hr以下。通過該結構,當用微波爐等對用該適合微波爐的片材包裝後的食品直接在包裝狀態下進行加熱時,從食品產生的水蒸氣能夠很好地釋放到外部。因此,即使用微波爐等加熱烹調也能夠減小損害口感的問題。 Further, it is preferable that the sheet suitable for the microwave oven has a moisture permeability of 200 g/m 2 24 hr or more and 15000 g/m 2 24 hr or less. According to this configuration, when the food packaged with the sheet of the suitable microwave oven is directly heated in a package state by a microwave oven or the like, the water vapor generated from the food can be well released to the outside. Therefore, even if it is heated by a microwave oven or the like, the problem of impairing the texture can be reduced.

此外,所述適合微波爐的片材優選的是,通過用表面具有凹版的輥在所述基紙的一個面上塗布所述塗布液來形成所述氣孔。這樣,通過用具有凹版的輥進行塗布液的塗布來形成氣孔,能夠容易且可靠地在樹脂層上形成所希望的氣孔。因此,所述適合微波爐的片材能夠在保證耐油性的同時實現優異的透濕性。 Further, the sheet suitable for a microwave oven preferably forms the pores by coating the coating liquid on one side of the base paper with a roller having a gravure on the surface. Thus, by forming the pores by coating the coating liquid with a roll having a gravure, it is possible to easily and reliably form desired pores on the resin layer. Therefore, the sheet suitable for the microwave oven can achieve excellent moisture permeability while ensuring oil resistance.

所述適合微波爐的片材,也可以通過在具有細小凹凸形狀的所述基紙的一個面上塗布所述塗布液來形成所述氣孔。這樣,通過在具有細小凹凸形狀的基紙的一個面上塗布塗布液,能夠容易且可靠地在樹脂層上形成所希望的氣孔。因此,所述適合微波爐的片材能夠在保證耐油性的同時實現優異的透濕性。 The sheet suitable for a microwave oven may also be formed by coating the coating liquid on one side of the base paper having a fine uneven shape. As described above, by applying the coating liquid on one surface of the base paper having a fine uneven shape, desired pores can be easily and reliably formed on the resin layer. Therefore, the sheet suitable for the microwave oven can achieve excellent moisture permeability while ensuring oil resistance.

此外,所述適合微波爐的片材優選的是,所述樹脂層是通過以換算成固體成分時的塗布量為0.01g/m2以上20g/m2以下的方式塗布所述塗布液而形成的。由此,所述適合微波爐的片材能夠在充分保證耐油性的同時實現更優異的透濕性。 In addition, it is preferable that the resin layer is formed by coating the coating liquid so that the coating amount in the case of converting into a solid component is 0.01 g/m 2 or more and 20 g/m 2 or less. . Thereby, the sheet suitable for the microwave oven can achieve more excellent moisture permeability while sufficiently ensuring oil resistance.

所述適合微波爐的片材優選的是,在所述基紙的雙方的面上層疊有所述樹脂層。由此,所述適合微波爐的片材通過基紙的兩面的樹脂層能具有理想的耐油性和透濕性。 It is preferable that the sheet suitable for a microwave oven has the resin layer laminated on both surfaces of the base paper. Thus, the sheet suitable for the microwave oven can have desired oil resistance and moisture permeability through the resin layers on both sides of the base paper.

此外,優選的是,所述樹脂層的主要成分是丙烯酸系樹脂、烯烴系樹脂或含羰基的樹脂。利用這種構成,能夠提高所述適合微波爐的片材的耐油性。 Further, it is preferable that the main component of the resin layer is an acrylic resin, an olefin resin or a carbonyl group-containing resin. With such a configuration, the oil resistance of the sheet suitable for the microwave oven can be improved.

此外,優選的是,所述基紙是耐油紙。通過使基紙是耐油紙,能夠提高所述適合微波爐的片材的耐油性。 Further, it is preferred that the base paper is oil resistant paper. By making the base paper oil-resistant paper, the oil resistance of the sheet suitable for the microwave oven can be improved.

所述適合微波爐的片材優選的是,所述適合微波爐的片材還具備印刷部,所述印刷部設置在所述基紙的一個面上。通過採用該結構,例如能夠按照包裝的食品種類進行不同的印刷,並利用視覺辨認所述適合微波爐的片材的外表面來識別食品的種類。 Preferably, the sheet suitable for a microwave oven further includes a printing portion, and the printing portion is disposed on one surface of the base paper. By adopting this configuration, for example, it is possible to perform different printing in accordance with the type of food packaged, and to visually recognize the outer surface of the sheet suitable for the microwave oven to identify the type of the food.

此外,所述適合微波爐的片材優選的是,從一方到另一方的油的遮蔽性為一小時以上。通過採用該結構,能夠進一步有效防止所述油的滲透。 Further, it is preferable that the sheet suitable for the microwave oven has a shielding property of one or more oils from one to the other for one hour or more. By adopting this structure, it is possible to further effectively prevent the penetration of the oil.

此外,本發明提供一種適合微波爐的片材的製造方法,具有形成樹脂層的工序,所述形成樹脂層的工序通過在基紙的一個面上塗布樹脂組合物的塗布液,由此形成樹脂層,在所述的形成樹脂層的工序中,以在所述樹脂層上設置多個氣孔的方式形成所述樹脂層。 Further, the present invention provides a method for producing a sheet suitable for a microwave oven, comprising the step of forming a resin layer by applying a coating liquid of a resin composition on one surface of the base paper, thereby forming a resin layer In the step of forming the resin layer, the resin layer is formed so that a plurality of pores are provided on the resin layer.

按照所述的製造方法,能夠製造所述的適合微波爐的片材,並且能夠實現所述的優點。即,通過所述製造方法製造的適合微波爐的片材,油分和水分難以從所述適合微波爐的片材的一方滲透到另一方,而水蒸氣容易從所述適合微波爐的片材的一方釋放 到另一方。 According to the manufacturing method described, the sheet suitable for the microwave oven can be manufactured, and the advantages described can be achieved. That is, in a sheet suitable for a microwave oven manufactured by the above-described manufacturing method, it is difficult for oil and moisture to permeate from one side of the sheet suitable for the microwave oven to the other, and water vapor is easily released from one side of the sheet suitable for the microwave oven. Go to the other side.

另外,“氣孔”是指形成在樹脂層上的細小的孔。“透濕度”是指按照杯法(JISZ0208)測量到的值。“油的遮蔽性”是指在40℃的條件下把3g的沙拉油滴到樹脂層上,測量所述油穿透到背面所需要的時間得到的值。 In addition, "pores" mean fine pores formed on the resin layer. "Opacity" refers to a value measured in accordance with the cup method (JIS Z0208). "Concealing property of oil" means a value obtained by dropping 3 g of salad oil onto a resin layer at 40 ° C and measuring the time required for the oil to penetrate to the back side.

如以所述的,本發明的適合微波爐的片材,能夠防止油向外表面滲透,並且透濕性優異。此外,本發明的適合微波爐的片材的製造方法,能夠製造防止油向外表面滲透、且透濕性優異的適合微波爐的片材。 As described above, the sheet suitable for a microwave oven of the present invention can prevent oil from penetrating to the outer surface and is excellent in moisture permeability. Further, in the method for producing a sheet suitable for a microwave oven of the present invention, it is possible to produce a sheet suitable for a microwave oven which is resistant to penetration of oil to the outer surface and which is excellent in moisture permeability.

1‧‧‧片材 1‧‧‧Sheet

2‧‧‧基紙 2‧‧‧ base paper

3‧‧‧樹脂層 3‧‧‧ resin layer

4‧‧‧印刷部 4‧‧‧Printing Department

13‧‧‧塗布液 13‧‧‧ Coating solution

14‧‧‧凹印輥 14‧‧‧ Gravure Roller

15‧‧‧容器 15‧‧‧ Container

21‧‧‧片材 21‧‧‧Sheet

22‧‧‧基紙 22‧‧‧Base paper

23‧‧‧樹脂層 23‧‧‧ resin layer

34‧‧‧實心輥 34‧‧‧solid roll

14a‧‧‧孔 14a‧‧‧ hole

23A‧‧‧氣孔 23A‧‧‧ stomata

3A‧‧‧氣孔 3A‧‧‧ stomata

圖1是本發明第一實施方式的適合微波爐的片材的斷面示意圖。 BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a schematic cross-sectional view showing a sheet suitable for a microwave oven according to a first embodiment of the present invention.

圖2是圖1的適合微波爐的片材的製造方法的簡要說明圖。 Fig. 2 is a schematic explanatory view showing a method of manufacturing a sheet suitable for a microwave oven of Fig. 1;

圖3是本發明第二實施方式的適合微波爐的片材的斷面示意圖。 Fig. 3 is a schematic cross-sectional view showing a sheet suitable for a microwave oven according to a second embodiment of the present invention.

圖4是圖3的適合微波爐的片材的製造方法的簡要說明圖。 Fig. 4 is a schematic explanatory view showing a method of manufacturing a sheet suitable for a microwave oven of Fig. 3;

下面參照合適的附圖說明本發明的實施方式。 Embodiments of the invention are described below with reference to the accompanying drawings.

[第一實施方式] [First Embodiment]

<適合微波爐的片材1> <Sheet 1 suitable for microwave oven>

如圖1所示,所述適合微波爐的片材1具有基紙2、層疊在所述基紙2的一個面上的樹脂層3、以及形成在基紙2的另一個面上的印刷部4。 As shown in FIG. 1, the sheet 1 suitable for a microwave oven has a base paper 2, a resin layer 3 laminated on one surface of the base paper 2, and a printing portion 4 formed on the other surface of the base paper 2. .

基紙2没有特别的限定,適合使用對以紙漿纖維為主要成分的紙漿漿料()進行抄紙得到的紙張。作為這種基紙2,可以例舉純白捲筒紙、玻璃紙、蠟紙、牛皮紙、模造紙、薄紙、一般高級紙以及日本紙等。其中,優選的是純白捲筒紙。 The base paper 2 is not particularly limited, and it is suitable to use a pulp slurry mainly composed of pulp fibers ( ) Paper obtained by papermaking. As such a base paper 2, pure white web, cellophane, wax paper, kraft paper, mold paper, tissue paper, general fine paper, Japanese paper, and the like can be exemplified. Among them, preferred is a pure white web.

基紙2的定量優選的是15g/m2以上60g/m2以下,更優選的是 20g/m2以上50g/m2以下,進一步優選的是25g/m2以上30g/m2以下。基紙2的定量如果超過所述上限,則由於基紙2的剛度變高,存在下述問題:難以沿包裝的食品的形狀變形,難以用所述適合微波爐的片材1直接包裝食品。另一方面,當基紙2的定量小於所述下限時,存在強度降低、容易破損的問題。 The basis weight of the base paper 2 is preferably 15 g/m 2 or more and 60 g/m 2 or less, more preferably 20 g/m 2 or more and 50 g/m 2 or less, still more preferably 25 g/m 2 or more and 30 g/m 2 or less. When the basis weight of the base paper 2 exceeds the upper limit, the rigidity of the base paper 2 becomes high, and there is a problem that it is difficult to deform along the shape of the packaged food, and it is difficult to directly package the food with the sheet 1 suitable for the microwave oven. On the other hand, when the basis weight of the base paper 2 is less than the lower limit, there is a problem that the strength is lowered and the yarn is easily broken.

為了賦予或提高耐油性,基紙2可以含有氟系添加物。作為氟系添加物,可以例舉含有具有碳鏈長度為6以下的全氟烷基的化合物的組合物等。在具有碳鏈長度為6以下的全氟烷基的化合物中,由於碳鏈長度越大的化合物耐油性越好,所以更優選的是具有碳鏈長度為5或6的全氟烷基的化合物。另外,當全氟烷基的碳鏈長度為7以上時,存在會增加對環境的負擔的問題,所以是不理想的。所述氟系添加物可以使用在市場上銷售的產品,作為在市場上銷售的產品可以例舉旭硝子株式會社製造的、商品名為“AG-E060”的產品等。 In order to impart or improve oil resistance, the base paper 2 may contain a fluorine-based additive. The fluorine-based additive may, for example, be a composition containing a compound having a perfluoroalkyl group having a carbon chain length of 6 or less. In a compound having a perfluoroalkyl group having a carbon chain length of 6 or less, a compound having a carbon chain length of 5 or 6 is more preferably a compound having a carbon chain length of 5 or 6 because the oil resistance of the compound having a larger carbon chain length is better. . Further, when the carbon chain length of the perfluoroalkyl group is 7 or more, there is a problem that the burden on the environment is increased, which is not preferable. As the fluorine-based additive, a product which is commercially available, and a product which is commercially available as a product of the product name "AG-E060" manufactured by Asahi Glass Co., Ltd. can be used.

基紙2中的氟系添加物的含量,按換算成固體成分計,優選的是0.001g/m2以上1.0g/m2以下,更優選的是0.3g/m2以上0.7g/m2以下。如果基紙2中的氟系添加物的含量超過所述上限,則由於基紙2的剛度變高,存在難以沿食品的形狀包裝的問題。另一方面,當基紙2中的氟系添加物的含量小於所述下限時,存在得不到足夠的耐油性的問題。 The content of the fluorine-based additive in the base paper 2 is preferably 0.001 g/m 2 or more and 1.0 g/m 2 or less, and more preferably 0.3 g/m 2 or more and 0.7 g/m 2 in terms of solid content. the following. If the content of the fluorine-based additive in the base paper 2 exceeds the upper limit, there is a problem that it is difficult to package in the shape of the food because the rigidity of the base paper 2 becomes high. On the other hand, when the content of the fluorine-based additive in the base paper 2 is less than the lower limit, there is a problem that sufficient oil resistance cannot be obtained.

作為使基紙2中含有氟系添加物的方法,可以例舉下述方法:把基紙2含浸在含有氟系添加物的溶液中;或在基紙2的至少一個面上塗布含有氟系添加物的塗布液;等等。當在基紙2的表面塗布含有氟系添加物的塗布液時,可以用附屬於抄紙機的塗布機進行在機塗布,也可以用與抄紙機分離的塗布機進行機外塗布。 As a method of containing a fluorine-based additive in the base paper 2, a method of impregnating the base paper 2 with a solution containing a fluorine-based additive or applying a fluorine-based system to at least one surface of the base paper 2 may be mentioned. a coating solution of the additive; and the like. When a coating liquid containing a fluorine-based additive is applied to the surface of the base paper 2, the coating may be carried out by an applicator attached to a paper machine, or may be applied externally by a coater separated from the paper machine.

基紙2的厚度雖然沒有特別的限定,但是優選的是0.03mm以上0.1mm以下,更優選的是0.04mm以上0.08mm以下。如果基紙2的厚度超過所述上限,則所述適合微波爐的片材1的剛度變高, 因此存在下述問題:難以沿包裝的食品的形狀變形,難以直接包裝食品。另一方面,當基紙2的厚度小於所述下限時,存在所述適合微波爐的片材的強度降低、容易破損的問題。 The thickness of the base paper 2 is not particularly limited, but is preferably 0.03 mm or more and 0.1 mm or less, and more preferably 0.04 mm or more and 0.08 mm or less. If the thickness of the base paper 2 exceeds the upper limit, the rigidity of the sheet 1 suitable for the microwave oven becomes high, Therefore, there is a problem that it is difficult to deform along the shape of the packaged food, and it is difficult to directly package the food. On the other hand, when the thickness of the base paper 2 is less than the lower limit, there is a problem that the strength of the sheet suitable for the microwave oven is lowered and easily broken.

通過在基紙2的一個面上塗布樹脂組合物的塗布液,由此在基紙2的一個面上形成樹脂層3。作為所述樹脂組合物的主要成分,使用丙烯酸系樹脂、烯烴系樹脂或含羰基的樹脂。 The resin layer 3 is formed on one surface of the base paper 2 by applying a coating liquid of the resin composition on one surface of the base paper 2. As the main component of the resin composition, an acrylic resin, an olefin resin, or a carbonyl group-containing resin is used.

作為丙烯酸系樹脂,可以例舉丙烯酸聚合物、丙烯酸-苯乙烯共聚物等共聚物等。具體地說,可以舉出把苯乙烯和苯乙烯衍生物、丙烯酸(甲基丙烯酸)和丙烯酸甲酯、丙烯酸乙酯、丙烯酸丁酯等丙烯酸烷基酯類、甲基丙烯酸甲酯等甲基丙烯酸烷基酯等共聚合得到的丙烯酸系共聚物、乙烯-丙烯酸共聚物鈉鹽、乙烯-丙烯酸共聚物銨鹽等乙烯-丙烯酸共聚物水溶性鹽、丙烯醯胺與丙烯酸(甲基丙烯酸)的共聚物、丙烯腈與丙烯酸(甲基丙烯酸)的共聚物等。 The acrylic resin may, for example, be a copolymer such as an acrylic polymer or an acrylic-styrene copolymer. Specifically, examples thereof include styrene and styrene derivatives, acrylic acid (methacrylic acid), alkyl acrylate such as methyl acrylate, ethyl acrylate, and butyl acrylate, and methacrylic acid such as methyl methacrylate. Acrylic copolymer obtained by copolymerization such as alkyl ester, ethylene-acrylic acid copolymer sodium salt, ethylene-acrylic acid copolymer ammonium salt, and the like, ethylene-acrylic acid copolymer water-soluble salt, copolymerization of acrylamide and acrylic acid (methacrylic acid) a copolymer of acrylonitrile and acrylic acid (methacrylic acid).

作為烯烴系樹脂,可以例舉低密度聚乙烯、高密度聚乙烯、聚丙烯、乙烯系共聚物等。 Examples of the olefin-based resin include low-density polyethylene, high-density polyethylene, polypropylene, and ethylene-based copolymer.

作為所述含羰基的樹脂,可以例舉苯乙烯-丙烯酸酯共聚物、環氧酯樹脂、聚氨酯樹脂、油改性酚樹脂等。 The carbonyl group-containing resin may, for example, be a styrene-acrylate copolymer, an epoxy ester resin, a polyurethane resin or an oil-modified phenol resin.

所述苯乙烯-丙烯酸酯共聚物沒有特別的限定,可以通過習知的乳化聚合法製造。在此,當採用乳化聚合法時,為了獲得一定的親水性,優選的是使用表面活性劑。作為所述表面活性劑,可以舉出脂肪酸皂、烷基磺酸鹽、烷基苯磺酸鹽、烷基磺基琥珀酸鹽、聚氧乙烯烷基硫酸鹽等負離子活性劑。優選的是,相對於100重量份單體混合物,使用1重量份以上10重量份以下的所述表面活性劑。 The styrene-acrylate copolymer is not particularly limited and can be produced by a conventional emulsion polymerization method. Here, when an emulsion polymerization method is employed, in order to obtain a certain hydrophilicity, it is preferred to use a surfactant. Examples of the surfactant include anion active agents such as a fatty acid soap, an alkylsulfonate, an alkylbenzenesulfonate, an alkylsulfosuccinate, and a polyoxyethylene alkyl sulfate. It is preferred to use 1 part by weight or more and 10 parts by weight or less of the surfactant with respect to 100 parts by weight of the monomer mixture.

所述環氧酯樹脂可以採用各種環氧酯樹脂,通過環氧樹脂與含有羧基的化合物的反應,產生伴隨環氧乙烷環的開環的酯化,由此能夠得到所述環氧酯樹脂。 The epoxy ester resin can be obtained by reacting an epoxy resin with a compound having a carboxyl group to produce a ring-opening esterification accompanying an oxirane ring by using various epoxy ester resins, whereby the epoxy ester resin can be obtained. .

所述聚氨酯樹脂沒有特別的限定,例如可以採用將聚異氰酸酯與多元醇聚合得到的聚合物。作為所述多元醇,可以例舉聚醚多元醇、聚酯多元醇、聚內酯多元醇、聚碳酸酯多元醇等。 The polyurethane resin is not particularly limited, and for example, a polymer obtained by polymerizing a polyisocyanate with a polyol can be used. The polyhydric alcohol may, for example, be a polyether polyol, a polyester polyol, a polylactone polyol or a polycarbonate polyol.

所述異氰酸酯没有特别的限定,可以採用例如六亞甲基二異氰酸酯、2,2,4-三甲基六亞甲基二異氰酸酯等脂肪族二異氰酸酯化合物;異佛尔酮二異氰酸酯、氢化亞二甲苯基二異氰酸酯、1,4-环己烷二異氰酸酯、4,4′-二环己基甲烷二異氰酸酯等脂环式二異氰酸酯化合物;亞二甲苯基二異氰酸酯、四甲基二甲苯二異氰酸酯等芳香脂肪族二異氰酸酯化合物;甲代亞苯基二異氰酸酯、苯基甲烷二異氰酸酯等芳香族二異氰酸酯化合物;所述的二異氰酸酯的改性物(含有碳化二亞胺、異氰酸酯二聚體()、脲酮亞胺()的改性物等)等。 The isocyanate is not particularly limited, and an aliphatic diisocyanate compound such as hexamethylene diisocyanate or 2,2,4-trimethylhexamethylene diisocyanate; isophorone diisocyanate or hydrogenated sub-diene can be used. An alicyclic diisocyanate compound such as tolyl diisocyanate, 1,4-cyclohexane diisocyanate or 4,4'-dicyclohexylmethane diisocyanate; aroma such as xylylene diisocyanate or tetramethyl xylene diisocyanate; An aliphatic diisocyanate compound; an aromatic diisocyanate compound such as phenylene diisocyanate or phenylmethane diisocyanate; a modified product of the diisocyanate (containing carbodiimide, isocyanate dimer ( ) uretonimine ( Modified matter, etc.).

所述聚醚多元醇沒有特別的限定,可以採用例如聚乙二醇、聚丙二醇、聚四亞甲基醚二醇、聚六亞甲基醚二醇等。 The polyether polyol is not particularly limited, and examples thereof include polyethylene glycol, polypropylene glycol, polytetramethylene ether glycol, and polyhexamethylene ether glycol.

所述聚酯多元醇沒有特別的限定,可以採用例如聚乙二醇己二酸酯、聚丁二醇己二酸酯、聚新戊二醇己二酸酯、聚-3-甲基戊二醇己二酸酯、聚乙二醇/丁二醇己二酸酯、聚新戊二醇/己二醇己二酸酯等。 The polyester polyol is not particularly limited, and for example, polyethylene glycol adipate, polybutylene glycol adipate, polyneopentyl glycol adipate, poly-3-methylpentane can be used. Alcohol adipate, polyethylene glycol/butanediol adipate, polynepentadiol/hexanediol adipate, and the like.

所述聚內酯多元醇没有特别的限定,可以採用例如聚己內酯二醇,聚歐米茄羥基己酸多元醇( )等。 The polylactone polyol is not particularly limited, and for example, polycaprolactone diol, polyomethylene hydroxycaproic acid polyol (for example) can be used. )Wait.

所述聚碳酸酯多元醇沒有特別的限定,可以採用例如丙烷二醇-(1,3)、丁烷二醇-(1,4)、己烷二醇-(1,6)、二乙二醇、三乙二醇、四乙二醇等二醇與碳醯氯、碳酸二苯酯等二芳基碳酸酯或碳酸乙烯酯、碳酸丙烯酯等環狀碳酸酯反應得到的生成物等。此外,作為所述聚碳酸酯多元醇,可以舉出通過聚酯或聚內酯、碳醯氯和二芳基碳酸酯或環狀碳酸酯的反應得到的聚酯碳酸酯。 The polycarbonate polyol is not particularly limited, and for example, propane diol-(1,3), butanediol-(1,4), hexanediol-(1,6), diethylene glycol can be used. A product obtained by reacting a diol such as an alcohol, triethylene glycol or tetraethylene glycol with a diaryl carbonate such as carbon chlorochloride or diphenyl carbonate, or a cyclic carbonate such as ethylene carbonate or propylene carbonate. Further, examples of the polycarbonate polyol include a polyester carbonate obtained by a reaction of a polyester or a polylactone, a carbonium chloride, a diaryl carbonate or a cyclic carbonate.

所述油改性酚樹脂沒有特別的限定,可以採用例如使酚類、 醛類和油在酸性催化劑下反應得到的樹脂。 The oil-modified phenol resin is not particularly limited, and for example, phenols, A resin obtained by reacting an aldehyde and an oil under an acidic catalyst.

用於改性的油沒有特別的限定,可以採用例如從植物油中選擇的一種以上,特別是從腰果油、亞麻籽油、桐油、蓖麻子油和妥兒油中選擇的一種以上。其中,從保存穩定性的角度出發,優選的是腰果油。此外,作為所述油改性酚樹脂,優選的是採用腰果油改性酚醛型酚樹脂。 The oil to be used for the modification is not particularly limited, and for example, one or more selected from the group consisting of vegetable oils, particularly one selected from the group consisting of cashew oil, linseed oil, tung oil, castor oil and liquid oil, may be used. Among them, cashew nut oil is preferred from the viewpoint of storage stability. Further, as the oil-modified phenol resin, it is preferred to use a cashew nut oil-modified novolac type phenol resin.

也可以使樹脂層3含有填料,從而使樹脂層3與食品之間具有平滑性(防止樹脂層3黏到食品上的效果)。樹脂層3所含有的填料沒有特別的限定,可以舉出無機微粒和有機微粒。作為樹脂層3所含有的填料,優選的是矽酸鋁,此外,也可以使用二氧化矽、硫酸鋇、氧化鈦等。所述填料可以使用一種,也可以將兩種以上混合使用。 The resin layer 3 may contain a filler to impart smoothness between the resin layer 3 and the food (the effect of preventing the resin layer 3 from sticking to the food). The filler contained in the resin layer 3 is not particularly limited, and examples thereof include inorganic fine particles and organic fine particles. As the filler contained in the resin layer 3, aluminum niobate is preferable, and ceria, barium sulfate, titanium oxide, or the like can also be used. These fillers may be used alone or in combination of two or more.

作為所述填料的平均粒徑,沒有特別的限定,優選的是50nm以上500nm以下。所述填料的平均粒徑的上限,更優選的是350nm,進一步優選的是300nm。所述填料的平均粒徑的下限,更優選的是60nm,進一步優選的是80nm。當所述填料的平均粒徑超過所述上限時,存在不怎麼能得到提高食品與樹脂層3之間的平滑性效果的問題。反之,當所述填料的平均粒徑小於所述下限時,存在下述問題:填料在塗布液內凝集,食品與樹脂層3之間的平滑性不能充分發揮。 The average particle diameter of the filler is not particularly limited, but is preferably 50 nm or more and 500 nm or less. The upper limit of the average particle diameter of the filler is more preferably 350 nm, further preferably 300 nm. The lower limit of the average particle diameter of the filler is more preferably 60 nm, further preferably 80 nm. When the average particle diameter of the filler exceeds the upper limit, there is a problem that the effect of improving the smoothness between the food and the resin layer 3 is not obtained much. On the other hand, when the average particle diameter of the filler is less than the lower limit, there is a problem that the filler aggregates in the coating liquid, and the smoothness between the food and the resin layer 3 cannot be sufficiently exhibited.

樹脂層3中的所述填料的含量雖然沒有特別的限定,但是相對於100重量份的樹脂組合物的主要成分的樹脂,優選的是含有1重量份以上20重量份以下。所述填料的含量的上限,更優選的是15重量份,進一步優選的是10重量份。此外,所述填料的含量的下限,更優選的是3重量份,進一步優選的是5重量份。當所述填料的含量超過所述上限時,存在不怎麼能得到提高食品與樹脂層3之間的平滑性效果的問題。反之,當所述填料的含量小於所述下限時,存在下述問題:填料的密度降低,食品與樹脂層3之 間的平滑性不能充分發揮。 The content of the filler in the resin layer 3 is not particularly limited, but is preferably 1 part by weight or more and 20 parts by weight or less based on 100 parts by weight of the resin of the main component of the resin composition. The upper limit of the content of the filler is more preferably 15 parts by weight, still more preferably 10 parts by weight. Further, the lower limit of the content of the filler is more preferably 3 parts by weight, still more preferably 5 parts by weight. When the content of the filler exceeds the upper limit, there is a problem that the effect of improving the smoothness between the food and the resin layer 3 is less likely to be obtained. On the other hand, when the content of the filler is less than the lower limit, there is a problem that the density of the filler is lowered, and the food and resin layer 3 The smoothness between the two cannot be fully exerted.

樹脂層3的平均厚度雖然沒有特別的限定,但是優選的是0.01mm以上0.08mm以下,進一步優選的是0.03mm以上0.05mm以下。當樹脂層3的厚度小於所述下限時,存在所述適合微波爐的片材1的耐油性得不到充分確保的問題。此外,當樹脂層3的厚度超過所述上限時,由於所述適合微波爐的片材1的剛度變高,所以存在難以沿要包裝的食品的形狀變形、難以直接包裝食品的問題。 The average thickness of the resin layer 3 is not particularly limited, but is preferably 0.01 mm or more and 0.08 mm or less, and more preferably 0.03 mm or more and 0.05 mm or less. When the thickness of the resin layer 3 is less than the lower limit, there is a problem that the oil resistance of the sheet 1 suitable for the microwave oven is not sufficiently ensured. Further, when the thickness of the resin layer 3 exceeds the upper limit, since the rigidity of the sheet 1 suitable for the microwave oven becomes high, there is a problem that it is difficult to deform along the shape of the food to be packaged, and it is difficult to directly package the food.

此外,樹脂層3形成有多個氣孔3a。另外,氣孔3a的確認沒有特別的限定,可以採用習知的方法。此外,也可以通過在樹脂層3上塗布顏料來確認氣孔3a。 Further, the resin layer 3 is formed with a plurality of pores 3a. Further, the confirmation of the pores 3a is not particularly limited, and a conventional method can be employed. Further, the pores 3a can also be confirmed by coating the pigment on the resin layer 3.

印刷部4沒有特別的限定,可以採用通過黏結劑把顏料固定在基紙2上得到的印刷部。所述顏料沒有特別的限定,可以適當採用黑色顏料、白色顏料、紅色顏料、藍色顏料、黃色顏料、綠色顏料、橙色顏料、紫色顏料等。此外,黏結劑沒有特別的限定,可以採用丙烯酸系樹脂、苯乙烯系樹脂、聚酯系樹脂、聚氨酯系樹脂、聚乙烯系樹脂、醇酸系樹脂、石油系樹脂、酮樹脂、環氧系樹脂、三聚氰胺系樹脂、氟系樹脂、矽系樹脂、纖維素衍生物、橡膠系樹脂等各種合成樹脂的一種或兩種以上的混合物、共聚物等。 The printing unit 4 is not particularly limited, and a printing unit obtained by fixing a pigment to the base paper 2 by a binder can be used. The pigment is not particularly limited, and a black pigment, a white pigment, a red pigment, a blue pigment, a yellow pigment, a green pigment, an orange pigment, a violet pigment, or the like can be suitably used. Further, the binder is not particularly limited, and an acrylic resin, a styrene resin, a polyester resin, a urethane resin, a polyethylene resin, an alkyd resin, a petroleum resin, a ketone resin, or an epoxy resin can be used. One or a mixture of two or more kinds of synthetic resins such as a melamine resin, a fluorine resin, a fluorene resin, a cellulose derivative, and a rubber resin, and a copolymer.

所述適合微波爐的片材1的透濕度雖然沒有特別的限定,但是優選的是200g/m224hr以上15000g/m224hr以下。所述適合微波爐的片材1的透濕度的上限,更優選的是13000g/m2,進一步優選的是11000g/m2。此外,所述適合微波爐的片材1的透濕度的下限,更優選的是1000g/m2,進一步優選的是4000g/m2。當所述透濕度在所述範圍時,在用微波爐等對由所述適合微波爐的片材1包裝的食品直接在包裝狀態下進行加熱時,可以使從食品產生的水蒸氣很好地釋放到外部,即使用微波爐等加熱處理也能夠減少損害 口感的問題。 Although the moisture permeability of the sheet 1 suitable for a microwave oven is not particularly limited, it is preferably 200 g/m 2 24 hr or more and 15,000 g/m 2 24 hr or less. The upper limit of the moisture permeability of the sheet 1 suitable for a microwave oven is more preferably 13,000 g/m 2 , still more preferably 11,000 g/m 2 . Further, the lower limit of the moisture permeability of the sheet 1 suitable for a microwave oven is more preferably 1000 g/m 2 , still more preferably 4000 g/m 2 . When the moisture permeability is in the above range, when the food packaged by the sheet 1 suitable for the microwave oven is directly heated in a package state by a microwave oven or the like, the water vapor generated from the food can be well released. Externally, that is, heat treatment using a microwave oven or the like can also reduce the problem of impaired mouthfeel.

作為從所述適合微波爐的片材1的一方到另一方的油的遮蔽性雖然沒有特別的限定,但是優選的是一小時以上,更優選的是1.5小時以上,進一步優選的是2小時以上。由此,能夠有效地防止所述油的滲透。 The shielding property of the oil from one of the sheets 1 to the other of the microwave oven is not particularly limited, but is preferably one hour or longer, more preferably 1.5 hours or longer, and still more preferably 2 hours or longer. Thereby, the penetration of the oil can be effectively prevented.

<適合微波爐的片材1的製造方法> <Method for Producing Sheet 1 Suitable for Microwave Oven>

適合微波爐的片材1的製造方法具有樹脂層形成工序和印刷工序。 A method of producing a sheet 1 suitable for a microwave oven has a resin layer forming step and a printing step.

樹脂層形成工序在基紙2的一個面上形成樹脂層3。在所述樹脂層形成工序中,在基紙2的一個面上塗布樹脂組合物的塗布液,通過使塗布後的塗布液乾燥固化,形成樹脂層3。 In the resin layer forming step, the resin layer 3 is formed on one surface of the base paper 2. In the resin layer forming step, a coating liquid of a resin composition is applied to one surface of the base paper 2, and the coating liquid after coating is dried and solidified to form a resin layer 3.

通過混合所述樹脂組合物和溶劑來製備所述塗布液。例如通過混合含羰基的樹脂等所述樹脂組合物和水系溶劑來製備所述塗布液。作為所述水系溶劑沒有特別的限定,例如可以舉出單一成分的水、或乙醇、丙醇等醇類與水的混合物等。 The coating liquid is prepared by mixing the resin composition and a solvent. The coating liquid is prepared, for example, by mixing the resin composition such as a carbonyl group-containing resin and an aqueous solvent. The aqueous solvent is not particularly limited, and examples thereof include water of a single component or a mixture of an alcohol such as ethanol or propanol and water.

作為向基紙2塗布塗布液的塗布方法,通過表面具有凹版的輥進行塗布。由此,能夠容易且可靠地在樹脂層3上形成所希望的氣孔3a。作為具體的塗布方法,可以舉出利用凹版印刷機的凹印塗布法。如圖2所示,凹印輥14的表面具有用於大量保持樹脂層3的形成材料的塗布液13的、多個凹部狀的孔14a。因此,通過使凹印輥14在收容有塗布液13的容器15中旋轉,並使凹印輥14接觸基紙2的表面,由此在相當於凹印輥14的孔14a部分的部位大量塗布塗布液13,在不是孔14a部分的部位少量塗布塗布液13。由此,在不是孔14a部分的部位(少量塗布有塗布液13的部位)容易形成合適的氣孔3a。另外,在凹印輥與基紙2的表面接觸前,將刮板(省略圖示)按壓在凹印輥14的表面,可以恰當地調整所希望的塗布液13的附著量。此外,通過調整凹印輥的旋轉速度也能調整所希望的塗布液13的附著量。 As a coating method of applying a coating liquid to the base paper 2, it is applied by a roll having a gravure on its surface. Thereby, the desired pores 3a can be formed easily and reliably on the resin layer 3. As a specific coating method, a gravure coating method using a gravure printing machine can be mentioned. As shown in FIG. 2, the surface of the gravure roll 14 has a plurality of concave-shaped holes 14a for a large amount of the coating liquid 13 for holding the material of the resin layer 3. Therefore, the gravure roll 14 is rotated in the container 15 in which the coating liquid 13 is accommodated, and the gravure roll 14 is brought into contact with the surface of the base paper 2, thereby being coated in a large amount at a portion corresponding to the portion of the hole 14a of the gravure roll 14. The coating liquid 13 is coated with a small amount of the coating liquid 13 at a portion other than the portion of the hole 14a. Thereby, it is easy to form a suitable pore 3a in the portion which is not the portion of the hole 14a (the portion where the coating liquid 13 is applied in a small amount). Further, before the gravure roll comes into contact with the surface of the base paper 2, a squeegee (not shown) is pressed against the surface of the gravure roll 14, and the desired amount of the coating liquid 13 can be appropriately adjusted. Further, the desired amount of the coating liquid 13 can be adjusted by adjusting the rotation speed of the gravure roll.

凹印輥14的孔14a的凹部的深度雖然沒有特別的限定,但是優選的是10μm以上70μm以下,更優選的是30μm以上50μm以下。當孔14a的凹部的深度小於所述下限時,存在下述問題:形成的樹脂層3的氣孔3a過多,從而會損害所述適合微波爐的片材1的耐油性。此外,當超過所述上限時,由於樹脂層3的厚度過厚,所述適合微波爐的片材1的剛度變高,所以存在難以用所述適合微波爐的片材1直接包裝食品的問題。 The depth of the concave portion of the hole 14a of the gravure roll 14 is not particularly limited, but is preferably 10 μm or more and 70 μm or less, and more preferably 30 μm or more and 50 μm or less. When the depth of the concave portion of the hole 14a is smaller than the lower limit, there is a problem that the pores 3a of the formed resin layer 3 are excessive, which may impair the oil resistance of the sheet 1 suitable for the microwave oven. Further, when the upper limit is exceeded, since the thickness of the resin layer 3 is too thick, the rigidity of the sheet 1 suitable for the microwave oven becomes high, so there is a problem that it is difficult to directly package the food with the sheet 1 suitable for the microwave oven.

作為塗布量,按換算成固體成分計,優選的是0.01g/m2以上20g/m2以下,更優選的是3g/m2以上8g/m2以下。當塗布量處於所述範圍時,所述適合微波爐的片材1能夠在充分保證耐油性的同時實現優異的透濕性。 The coating amount is preferably 0.01 g/m 2 or more and 20 g/m 2 or less, and more preferably 3 g/m 2 or more and 8 g/m 2 or less, in terms of solid content. When the coating amount is in the range, the sheet 1 suitable for a microwave oven can achieve excellent moisture permeability while sufficiently ensuring oil resistance.

作為塗布液的乾燥固化,沒有特別的限定,可以通過乾燥裝置(省略圖示)使塗布液乾燥固化。 The drying and solidification of the coating liquid is not particularly limited, and the coating liquid can be dried and solidified by a drying device (not shown).

印刷工序在基紙2的一個面上印刷用於裝飾的文字、圖案等。 在該印刷工序中,在通過樹脂層形成工序層疊了樹脂層3的基紙2的一個面的相反一側的面上設置印刷部4。在此,所述印刷方法可以採用習知的各種方法。作為印刷方法,可以例舉凹版印刷方式、膠印印刷方式、柔版印刷方式、絲網印刷方式等。 In the printing process, characters, patterns, and the like for decoration are printed on one surface of the base paper 2. In the printing step, the printing portion 4 is provided on the surface on the opposite side of one surface of the base paper 2 on which the resin layer 3 is laminated by the resin layer forming step. Here, the printing method can employ various conventional methods. As the printing method, a gravure printing method, an offset printing method, a flexographic printing method, a screen printing method, or the like can be exemplified.

<優點> <advantage>

由於基紙2的一個面上具備樹脂層3,所以通過把所述適合微波爐的片材1的所述樹脂層3作為內側(食品側)包裝食品,能夠通過樹脂層3可靠地防止從食品滲出的油滲透到所述適合微波爐的片材1的外側。此外,由於所述樹脂層3具有多個氣孔3a,所以水蒸氣可以從所述氣孔3a很好地釋放。因此,即使用微波爐對油炸食品和漢堡包等食品直接在包裝狀態下進行加熱處理,也能夠在抑制油的滲透的同時使水蒸氣從所述氣孔3a很好地釋放,所以由於水滴向食品表面的附著被抑制,因此能夠減小損害口感的問題。 Since the resin layer 3 is provided on one surface of the base paper 2, the resin layer 3 of the sheet 1 suitable for the microwave oven can be used as the inner side (food side) packaged food, and the resin layer 3 can be reliably prevented from seeping out from the food. The oil penetrates to the outside of the sheet 1 suitable for the microwave oven. Further, since the resin layer 3 has a plurality of pores 3a, water vapor can be well released from the pores 3a. Therefore, even if the food such as the fried food and the hamburger is directly heat-treated in a package state using a microwave oven, the water vapor can be well released from the pores 3a while suppressing the penetration of the oil, so that the water droplets are directed to the food surface. The adhesion is suppressed, so that the problem of impaired mouthfeel can be reduced.

此外,由於樹脂層3的主要成分是丙烯酸系樹脂、烯烴系樹脂或含羰基的樹脂,所以能夠提高所述適合微波爐的片材1的耐油性。 Further, since the main component of the resin layer 3 is an acrylic resin, an olefin resin, or a carbonyl group-containing resin, the oil resistance of the sheet 1 suitable for the microwave oven can be improved.

此外,所述適合微波爐的片材1通過用表面具有凹版的輥塗布塗布液13,可以容易且可靠地在所述適合微波爐的片材1的外側形成能很好地釋放水蒸氣的氣孔3a。因此,所述適合微波爐的片材1能夠在保證耐油性的同時實現優異的透濕性。 Further, the sheet 1 suitable for a microwave oven can easily and reliably form the pores 3a which can release water vapor well on the outer side of the sheet 1 suitable for the microwave oven by coating the coating liquid 13 with a roll having a gravure on the surface. Therefore, the sheet 1 suitable for a microwave oven can achieve excellent moisture permeability while ensuring oil resistance.

而且,由於所述適合微波爐的片材1在基紙2的另一個面具有印刷部4,所以通過按照例如包裝的食品的種類進行不同的印刷,可以僅通過視覺辨認所述適合微波爐的片材1的外側就能識別食品的種類。 Further, since the sheet 1 suitable for the microwave oven has the printing portion 4 on the other side of the base paper 2, the sheet suitable for the microwave oven can be visually recognized only by performing different printing in accordance with, for example, the type of the packaged food. The outside of 1 can identify the type of food.

[第二實施方式] [Second Embodiment]

接著,說明作為第二實施方式的適合微波爐的片材21。另外,在第二實施方式的說明中,對於與第一實施方式具有相同結構或相同功能的部件等使用相同的附圖標記,並省略對其的詳細說明。 Next, a sheet 21 suitable for a microwave oven as the second embodiment will be described. In the description of the second embodiment, the same reference numerals are given to members having the same configurations or functions as those of the first embodiment, and the detailed description thereof will be omitted.

如圖3所示,作為第二實施方式的適合微波爐的片材21,具有基紙22、層疊在所述基紙22的一個面上的樹脂層23、以及形成在基紙22的另一個面上的印刷部4。 As shown in FIG. 3, a sheet 21 suitable for a microwave oven as a second embodiment has a base paper 22, a resin layer 23 laminated on one surface of the base paper 22, and another surface formed on the base paper 22. Upper printing unit 4.

基紙22的一個面上具有細小凹凸形狀。基紙22的、取決於細小凹凸形狀的表面粗糙度(十點平均粗糙度)雖然沒有特別的限定,但是優選的是0.01mm以上0.05mm以下,進一步優選的是0.02mm以上0.03mm以下。當基紙22的表面粗糙度在所述範圍外時,存在所述適合微波爐的片材21的樹脂層23上不能恰當地形成所希望的氣孔23a的問題。 The base paper 22 has a fine uneven shape on one surface. The surface roughness (ten-point average roughness) of the base paper 22 depending on the fine uneven shape is not particularly limited, but is preferably 0.01 mm or more and 0.05 mm or less, and more preferably 0.02 mm or more and 0.03 mm or less. When the surface roughness of the base paper 22 is out of the above range, there is a problem that the desired pores 23a are not properly formed on the resin layer 23 of the sheet 21 suitable for the microwave oven.

另外,作為基紙22,可以使用與在第一實施方式中使用的基紙同樣的純白捲筒紙、玻璃紙、蠟紙、牛皮紙、模造紙、薄紙、一般高級紙以及日本紙等,定量、厚度也可以使用相同的定量、厚度。 Further, as the base paper 22, pure white paper, cellophane, stencil, kraft paper, mold paper, tissue paper, general fine paper, and Japanese paper, which are the same as the base paper used in the first embodiment, can be used, and the basis weight and thickness can also be used. The same amount and thickness can be used.

樹脂層23形成在基紙22的細小凹凸形狀的面上。此外,樹脂層23形成有多個氣孔23a。 The resin layer 23 is formed on the surface of the fine concavo-convex shape of the base paper 22. Further, the resin layer 23 is formed with a plurality of pores 23a.

此外,樹脂層23的氣孔23a的凹凸的平均深度,優選的是與第一實施方式的樹脂層3的氣孔3a的平均深度相同。 Further, the average depth of the concavities and convexities of the pores 23a of the resin layer 23 is preferably the same as the average depth of the pores 3a of the resin layer 3 of the first embodiment.

作為樹脂層23的形成材料,可以採用和第一實施方式中使用的樹脂層3的形成材料同樣的形成材料。 As a material for forming the resin layer 23, the same material as the material for forming the resin layer 3 used in the first embodiment can be used.

接著,參照圖4說明作為第二實施方式的適合微波爐的片材21的製造方法。 Next, a method of manufacturing the sheet 21 suitable for a microwave oven as the second embodiment will be described with reference to Fig. 4 .

適合微波爐的片材21的製造方法,與第一實施方式相同,具有樹脂層形成工序和印刷工序。 The method for producing the sheet 21 suitable for a microwave oven has a resin layer forming step and a printing step as in the first embodiment.

在樹脂層形成工序中,在基紙22的一個面上塗布塗布液形成樹脂層23。 In the resin layer forming step, the coating liquid is applied to one surface of the base paper 22 to form the resin layer 23.

作為塗布方法,採用通過使用具有平滑表面的輥的輥塗法和棒塗法等進行塗布的方法。具體地說,如圖4所示,通過使實心輥34在收容有塗布液13的容器15中旋轉,在實心輥34上保持塗布液13。而後,通過把所述實心輥34按壓在基紙22的、具有凹凸的面上,可以在基紙22上塗布塗布液13。 As the coating method, a method of applying by a roll coating method using a roll having a smooth surface, a bar coating method, or the like is employed. Specifically, as shown in FIG. 4, the coating liquid 13 is held on the solid roller 34 by rotating the solid roller 34 in the container 15 in which the coating liquid 13 is accommodated. Then, the coating liquid 13 can be applied onto the base paper 22 by pressing the solid roller 34 against the uneven surface of the base paper 22.

此外,當把所述實心輥34按壓在基紙22的、具有凹凸的面上時,以在樹脂層23的凹凸面的凸部上形成薄的樹脂層的方式調整使實心輥34接觸時的壓力並把實心輥34按壓在樹脂層23上。 由此,由於在基紙22的表面形成樹脂層,並且利用平滑的實心輥使樹脂層23形成一定的厚度,所以容易在形成有薄的樹脂層23的部分(基紙的凸部的上部)形成適當的氣孔23a。 In addition, when the solid roller 34 is pressed against the uneven surface of the base paper 22, the solid roller 34 is adjusted so as to form a thin resin layer on the convex portion of the uneven surface of the resin layer 23. The pressure is applied and the solid roller 34 is pressed against the resin layer 23. Thus, since the resin layer is formed on the surface of the base paper 22, and the resin layer 23 is formed to a certain thickness by the smooth solid roller, it is easy to form the portion where the thin resin layer 23 is formed (the upper portion of the convex portion of the base paper) A suitable air hole 23a is formed.

此外,在印刷工序中,利用和所述第一實施方式的工序同樣的工序,在基紙22的一個面上形成印刷部4。 Further, in the printing process, the printing unit 4 is formed on one surface of the base paper 22 by the same steps as those of the first embodiment.

作為第二實施方式的適合微波爐的片材21,在基紙22的細小凹凸形狀的一個面上形成樹脂層23,並容易在形成有薄的所述樹脂層23的部位(基紙22的細小凹凸形狀的凸部的上部)形成適 當的氣孔23a。因此,通過所述氣孔23a,水蒸氣能很好地釋放。因此,適合微波爐的片材21在保證耐油性的同時具有優異的透濕性,即使用微波爐加熱,水蒸氣也能從氣孔23a很好地釋放,所以能夠減小損害口感的問題。 As the sheet 21 suitable for the microwave oven of the second embodiment, the resin layer 23 is formed on one surface of the fine uneven shape of the base paper 22, and is easily formed at a portion where the thin resin layer 23 is formed (the fineness of the base paper 22) The upper part of the convex portion of the concave-convex shape is formed When the air hole 23a. Therefore, water vapor can be well released through the air holes 23a. Therefore, the sheet 21 suitable for the microwave oven has excellent moisture permeability while ensuring oil resistance, that is, it can be well released from the pores 23a by heating in a microwave oven, so that the problem of impairing the texture can be reduced.

[其他實施方式] [Other embodiments]

本發明不限於所述實施方式,在本發明所意圖的範圍內可以進行合適的設計變更。 The present invention is not limited to the embodiments described above, and suitable design changes can be made within the scope of the invention.

在所述實施方式中,說明了在基紙的一個面上層疊樹脂層,但是在本發明中,也可以在基紙的雙方的面上層疊樹脂層。由此,容易進行透濕度、以及耐油性和透濕性的控制。 In the above embodiment, the resin layer is laminated on one surface of the base paper. However, in the present invention, the resin layer may be laminated on both surfaces of the base paper. Thereby, it is easy to control the moisture permeability, oil resistance, and moisture permeability.

此外,作為向基紙塗布塗布液的塗布方法,不限於所述的方法,也可以採用刮塗法、刮刀塗布法、模具塗布法、柔印塗布法、浸漬法等習知的方法。當採用這些方法時,例如通過調整樹脂層的形成材料的塗布液的塗布量,能夠形成具有所希望的氣孔的樹脂層。 Further, the coating method for applying the coating liquid to the base paper is not limited to the above-described method, and a conventional method such as a doctor blade method, a knife coating method, a die coating method, a flexographic coating method, or a dipping method may be employed. When these methods are employed, for example, by adjusting the coating amount of the coating liquid of the material for forming the resin layer, a resin layer having desired pores can be formed.

此外,也可以通過在基紙上塗布在樹脂層的形成材料的塗布液中含有填料的物質,來形成具有所希望的氣孔的樹脂層。塗布液中含有的填料沒有特別的限定,可以舉出無機微粒和有機微粒。作為樹脂層3所含有的填料,優選的是矽酸鋁,此外,可以採用二氧化矽、硫酸鋇、氧化鈦等。所述填料可以僅使用一種,此外也可以混合兩種以上使用。 Further, a resin layer having a desired pore may be formed by applying a substance containing a filler to a coating liquid of a material for forming a resin layer on a base paper. The filler contained in the coating liquid is not particularly limited, and examples thereof include inorganic fine particles and organic fine particles. As the filler contained in the resin layer 3, aluminum niobate is preferable, and ceria, barium sulfate, titanium oxide or the like can be used. These fillers may be used alone or in combination of two or more.

作為所述填料的平均粒徑,雖然沒有特別的限定,但是優選的是50nm以上500nm以下。所述填料的平均粒徑的上限,更優選的是350nm,進一步優選的是300nm。所述填料的平均粒徑的下限,更優選的是60nm,進一步優選的是80nm。當所述填料的平均粒徑在所述範圍外時,存在不能很好地形成所希望的氣孔的問題。 The average particle diameter of the filler is not particularly limited, but is preferably 50 nm or more and 500 nm or less. The upper limit of the average particle diameter of the filler is more preferably 350 nm, further preferably 300 nm. The lower limit of the average particle diameter of the filler is more preferably 60 nm, further preferably 80 nm. When the average particle diameter of the filler is outside the range, there is a problem that the desired pores are not formed well.

樹脂層3中的所述填料的含量雖然沒有特別的限定,但是相 對於100重量份的樹脂層3的主要成分的樹脂,優選的是1重量份以上20重量份以下。所述填料的含量的上限,更優選的是15重量份,進一步優選的是10重量份。此外,所述填料的含量的下限,更優選的是3重量份,進一步優選的是5重量份。當所述填料的含量在所述範圍外時,存在不能很好地形成所述希望的氣孔的問題。 The content of the filler in the resin layer 3 is not particularly limited, but the phase The resin of the main component of 100 parts by weight of the resin layer 3 is preferably 1 part by weight or more and 20 parts by weight or less. The upper limit of the content of the filler is more preferably 15 parts by weight, still more preferably 10 parts by weight. Further, the lower limit of the content of the filler is more preferably 3 parts by weight, still more preferably 5 parts by weight. When the content of the filler is outside the range, there is a problem that the desired pores are not well formed.

在所述實施方式中,說明了形成有氣孔的樹脂層,在本發明中,所述樹脂層也可以具有所述氣孔的閥門。 In the above embodiment, a resin layer in which pores are formed is described. In the present invention, the resin layer may have a valve of the pores.

所述氣孔的閥門以覆蓋氣孔的方式形成,在塗布樹脂層的塗布液時,通過調整塗布量可以形成氣孔的閥門。例如,當用表面具有凹版的輥塗布塗布液而形成樹脂層時,在不接觸凹印輥的孔的部位少量塗布了塗布液,以在少量塗布塗布液的部位形成氣孔且形成覆蓋所述氣孔的樹脂的膜的方式調整塗布量並進行塗布。 利用適當的塗布量,在樹脂層上形成氣孔,並且在形成的氣孔的上部,氣孔的周圍的塗布液相連接,在氣孔的上部形成薄的膜狀的閥門。因此,可以利用所述閥門防止油的滲透,關於水蒸氣的釋放,由於通過利用水蒸氣的壓力壓迫薄的膜狀的閥門從而在所述閥門上產生間隙,所以水蒸氣能從所述間隙很好地釋放。 The valve of the air hole is formed to cover the air hole, and when the coating liquid of the resin layer is applied, the valve of the air hole can be formed by adjusting the coating amount. For example, when a coating layer is formed by coating a coating liquid with a roll having a gravure on the surface, a coating liquid is applied to a portion where the hole of the gravure roll is not contacted to form a pore at a portion where the coating liquid is applied and a pore is formed to be formed. The coating amount of the resin film was adjusted and applied. The pores are formed on the resin layer by an appropriate coating amount, and the coating liquid phase around the pores is connected to the upper portion of the formed pores, and a thin film-like valve is formed on the upper portion of the pores. Therefore, the valve can be utilized to prevent the penetration of oil. With regard to the release of water vapor, since a gap is generated in the valve by pressing a thin film-like valve by the pressure of the water vapor, the water vapor can be very dense from the gap. Released well.

另外,為了形成氣孔的閥門,通過不僅進行塗布量的調整,還調整凹印輥的旋轉速度、塗布液的成分、使塗布液乾燥時的溫度、時間等,能夠以形成氣孔的閥門的方式層疊樹脂層。 In addition, it is possible to adjust the rotation speed of the gravure roll, the composition of the coating liquid, the temperature and time when the coating liquid is dried, and the like, in order to adjust the coating amount, and to laminate the valve forming the pores. Resin layer.

此外,作為基紙,也可以使用耐油紙。作為耐油紙,可以採用習知的耐油紙。由此可以提高所述適合微波爐的片材的耐油性。 Further, as the base paper, oil resistant paper can also be used. As the oil resistant paper, a conventional oil resistant paper can be used. Thereby, the oil resistance of the sheet suitable for the microwave oven can be improved.

此外,作為樹脂層的形成材料,不限於所述實施方式中說明過的材料,只要是能實現耐油性的樹脂即可。 In addition, the material for forming the resin layer is not limited to the material described in the above embodiment, and may be any resin that can achieve oil resistance.

此外,在所述實施方式中說明了具有印刷部的結構,但是在本發明中,印刷部不是必須的結構要素。此外,在設置印刷部的情況下,也不限於所述實施方式的構成,例如在基紙的一個面上 設置印刷部並在所述印刷部上層疊樹脂層得到的適合微波爐的片材也在本發明意圖的範圍內。 Further, in the above embodiment, the configuration having the printing portion has been described, but in the present invention, the printing portion is not an essential structural element. Further, in the case where the printing portion is provided, it is not limited to the configuration of the embodiment, for example, on one side of the base paper. A sheet suitable for a microwave oven obtained by laminating a resin portion and laminating a resin layer on the printing portion is also within the scope of the present invention.

此外,在所述實施方式中,針對所述適合微波爐的片材的製造方法中的印刷工序在樹脂層形成工序之後進行的方法進行了說明,但是本發明不限於此,也可以在樹脂層形成工序S1之前進行印刷。此外,通過準備已印刷好的基紙,也可以不進行所述印刷工序。 Further, in the above-described embodiment, the method of performing the printing step in the method for producing a sheet suitable for a microwave oven after the resin layer forming step has been described. However, the present invention is not limited thereto and may be formed in a resin layer. Printing is performed before the step S1. Further, the printing process may not be performed by preparing the printed base paper.

[實施例] [Examples]

接著,說明所述適合微波爐的片材的兩個實施例,所述實施例並不對本發明構成任何限制。 Next, two embodiments of the sheet suitable for a microwave oven will be described, and the embodiment does not constitute any limitation to the present invention.

(實施例1) (Example 1)

作為基紙使用了定量25g/m2的耐油紙(商品名“EC耐油紙25”:天滿特殊制紙株式會社製造)。通過將塗佈劑(商品名“ B-7”:第一塗料株式會社制造)在水中稀釋制備了塗布液,將所述塗布液凹版塗布在所述基紙的一个面上,形成了樹脂層。得到了在樹脂層上具有多個氣孔的實施例1的適合微波爐的片材。 As the base paper, a pressure-resistant paper of 25 g/m 2 (trade name "EC oil-resistant paper 25": manufactured by Tenman Special Paper Co., Ltd.) was used. By applying a coating agent (trade name " B-7": manufactured by First Co., Ltd.), a coating liquid was prepared by diluting in water, and the coating liquid was gravure coated on one surface of the base paper to form a resin layer. A sheet of the microwave oven suitable for the embodiment of the present invention.

(實施例2) (Example 2)

在實施例1的適合微波爐的片材的另一個面上也同樣地塗布塗布液,使所述塗布液乾燥固化後得到了實施例2的適合微波爐的片材。 The coating liquid was applied in the same manner to the other surface of the sheet suitable for the microwave oven of Example 1, and the coating liquid was dried and solidified to obtain a sheet suitable for the microwave oven of Example 2.

(比較例) (Comparative example)

作為比較例,使用了在薄西洋紙(商品名“HS21紙”:王子制紙株式會社製造)層壓上8μm厚度的聚乙烯得到的片材。 As a comparative example, a sheet obtained by laminating polyethylene having a thickness of 8 μm on a thin western paper (trade name "HS21 paper": manufactured by Oji Paper Co., Ltd.) was used.

(耐油度) (oil resistance)

對實施例1、實施例2和比較例進行了油的遮蔽性試驗。所述遮蔽性試驗為,在40℃的條件下將3g的沙拉油滴到樹脂層上,測量了油穿透到背面所需要的時間。 The oil shielding test was carried out on Example 1, Example 2 and Comparative Example. The masking test was carried out by dropping 3 g of salad oil onto the resin layer at 40 ° C, and measuring the time required for the oil to penetrate to the back surface.

即使經過了3小時以上,實施例1也沒有發生油的穿透。實施例2是經過了5小時以上也沒有發生油的穿透。另一方面,比較例在30分以內就發生了油的穿透。 Even after 3 hours or more, the penetration of oil did not occur in Example 1. In Example 2, no penetration of oil occurred even after 5 hours or more. On the other hand, in the comparative example, penetration of oil occurred within 30 minutes.

(透濕度) (moisture permeability)

接著,對實施例1、實施例2和比較例進行了透濕度試驗。所述透濕度試驗按照杯法(JISZ0208)進行。 Next, the moisture permeability test was performed on Example 1, Example 2, and Comparative Example. The moisture permeability test was carried out in accordance with the cup method (JIS Z0208).

實施例1的透濕度為12400g/m224hr。實施例2的透濕度為8500g/m224hr。另一方面,比較例為96g/m224hr。 The moisture permeability of Example 1 was 12,400 g/m 2 24 hr. The moisture permeability of Example 2 was 8500 g/m 2 24 hr. On the other hand, the comparative example was 96 g/m 2 24 hr.

(結果) (result)

如上所述,實施例1和實施例2得到了下述結果:耐油度具有合適的範圍,並且具有高的透濕度。另外,比較例的透濕度低,用微波爐加熱時會發生水滴附著到片材內表面上。 As described above, Example 1 and Example 2 gave the results that the oil resistance has a suitable range and has a high moisture permeability. Further, the comparative example had a low moisture permeability, and when heated in a microwave oven, water droplets adhered to the inner surface of the sheet.

工業實用性 Industrial applicability

如上所述,本發明的適合微波爐的片材和通過本發明的適合微波爐的片材的製造方法製造出的適合微波爐的片材,由於具有耐油性並且具有透濕性,所以適合用作在用微波爐等進行加熱處理時包裝食品的片材。 As described above, the sheet suitable for a microwave oven of the present invention and the sheet suitable for the microwave oven manufactured by the method for producing a sheet suitable for a microwave oven of the present invention are suitable for use because they are oil-resistant and moisture-permeable. A sheet of food packaged when subjected to heat treatment such as a microwave oven.

1‧‧‧片材 1‧‧‧Sheet

2‧‧‧基紙 2‧‧‧ base paper

3‧‧‧樹脂層 3‧‧‧ resin layer

4‧‧‧印刷部 4‧‧‧Printing Department

3A‧‧‧氣孔 3A‧‧‧ stomata

Claims (11)

一種適合微波爐的片材,其特徵在於,所述適合微波爐的片材具備基紙以及樹脂層,通過在所述基紙的一個面上塗布樹脂組合物的塗布液,所述樹脂層層疊在所述基紙的一個面上,所述樹脂層具有多個氣孔。 A sheet suitable for a microwave oven, characterized in that the sheet suitable for a microwave oven is provided with a base paper and a resin layer, and the resin layer is laminated on the one surface of the base paper by coating a coating liquid of the resin composition On one side of the base paper, the resin layer has a plurality of pores. 根據請求項1所述的適合微波爐的片材,其中,透濕度為200g/m224hr以上15000g/m224hr以下。 A sheet suitable for a microwave oven according to claim 1, wherein the moisture permeability is 200 g/m 2 24 hr or more and 15000 g/m 2 24 hr or less. 根據請求項1所述的適合微波爐的片材,其中,通過用表面具有凹版的輥在所述基紙的一個面上塗布所述塗布液來形成所述氣孔。 A sheet suitable for a microwave oven according to claim 1, wherein the pores are formed by coating the coating liquid on one side of the base paper with a roll having a gravure on the surface. 根據請求項1所述的適合微波爐的片材,其中,通過在具有細小凹凸形狀的所述基紙的一個面上塗布所述塗布液來形成所述氣孔。 A sheet suitable for a microwave oven according to claim 1, wherein the pores are formed by coating the coating liquid on one side of the base paper having a fine uneven shape. 根據請求項1所述的適合微波爐的片材,其中,所述樹脂層是通過以換算成固體成分時的塗布量為0.01g/m2以上20g/m2以下的方式塗布所述塗布液而形成的。 The sheet material suitable for a microwave oven according to claim 1, wherein the coating layer is applied by coating the coating liquid so that the coating amount when converted into a solid component is 0.01 g/m 2 or more and 20 g/m 2 or less. Forming. 根據請求項1所述的適合微波爐的片材,其中,在所述基紙的雙方的面上層疊有所述樹脂層。 A sheet suitable for a microwave oven according to claim 1, wherein the resin layer is laminated on both surfaces of the base paper. 根據請求項1所述的適合微波爐的片材,其中,所述樹脂層的主要成分是丙烯酸系樹脂、烯烴系樹脂或含羰基的樹脂。 A sheet suitable for a microwave oven according to claim 1, wherein the main component of the resin layer is an acrylic resin, an olefin resin or a carbonyl group-containing resin. 根據請求項1所述的適合微波爐的片材,其中,所述基紙是耐油紙。 A sheet suitable for a microwave oven according to claim 1, wherein the base paper is oil resistant paper. 根據請求項1所述的適合微波爐的片材,其中,所述適合微波爐的片材還具備印刷部,所述印刷部設置在所述基紙的一個面上。 A sheet suitable for a microwave oven according to claim 1, wherein the sheet suitable for the microwave oven further comprises a printing portion, and the printing portion is provided on one surface of the base paper. 根據請求項1所述的適合微波爐的片材,其中,從一方到另一方的油的遮蔽性為一小時以上。 A sheet suitable for a microwave oven according to claim 1, wherein the shielding property of the oil from one side to the other is one hour or more. 一種適合微波爐的片材的製造方法,其特徵在於,具有形成樹脂層的工序,所述形成樹脂層的工序通過在基紙的一個面上塗布樹脂組合物的塗布液,由此形成樹脂層,在所述的形成樹脂層的工序中,以在所述樹脂層上設置多個氣孔的方式形成所述樹脂層。 A method for producing a sheet suitable for a microwave oven, comprising the step of forming a resin layer, wherein the step of forming a resin layer is performed by applying a coating liquid of a resin composition on one surface of the base paper, thereby forming a resin layer. In the step of forming the resin layer, the resin layer is formed so that a plurality of pores are provided on the resin layer.
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Family Cites Families (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55134057A (en) * 1979-03-24 1980-10-18 Toyo Boseki Parting type film for packing food
JPS5747429A (en) * 1980-09-02 1982-03-18 Sanyo Kokusaku Pulp Co Sheet for baking and cooking tray
JPH081083Y2 (en) * 1989-12-15 1996-01-17 株式会社日本デキシー Microwave cooking wrapping paper
US5213858A (en) * 1990-04-04 1993-05-25 International Paper Biodegradable paperboard laminate structure
JPH08232194A (en) * 1995-02-24 1996-09-10 New Oji Paper Co Ltd Dunnage paper for heat cooking
JP2925993B2 (en) * 1995-12-15 1999-07-28 大興製紙株式会社 Water-absorbing and oil-absorbing release paper for food packaging
JPH1134198A (en) * 1997-07-17 1999-02-09 Japan Steel & Tube Constr Co Ltd Sheet composite material, composite tube, and method for reinforcing/repairing building structure
JPH11350382A (en) * 1998-06-01 1999-12-21 Taiko Seishi Kk Heat-sealable packaging material for food
JP2000072150A (en) * 1998-08-28 2000-03-07 Mitsubishi Heavy Ind Ltd Packaging bag for refreshing drink
JP2000178471A (en) * 1998-12-14 2000-06-27 Seiji Kagawa Gas barrier coating agent, production of the agent, gas barrier film, production of the gas barrier film, easily tearable gas barrier film and production of the easily tearable gas barrier film
JP2001254293A (en) * 2000-03-07 2001-09-21 Fukusuke Kogyo Co Ltd Heat-sealable paper resistant to oil and water, method for producing the paper and packaging bag for heating
JP2002011832A (en) * 2000-06-27 2002-01-15 Asahi Kasei Corp Close contact sealable lap film
JP2002234092A (en) * 2001-02-07 2002-08-20 Idemitsu Unitech Co Ltd Sealant for packaging material, packaging material, and method for manufacturing sealant for packaging material
JP2003191931A (en) * 2001-12-25 2003-07-09 Toppan Printing Co Ltd Paper-made container and manufacturing method therefor
JP4120288B2 (en) * 2002-06-21 2008-07-16 凸版印刷株式会社 Packaging materials
KR101097123B1 (en) * 2003-08-11 2011-12-22 도쿠슈 도카이 세이시 가부시키가이샤 Oil-resistant sheet material
JP4595402B2 (en) * 2004-02-12 2010-12-08 凸版印刷株式会社 Bag-like container
JP2006183221A (en) * 2004-12-28 2006-07-13 Oji Paper Co Ltd Oil-resistant paper
JP2007106996A (en) * 2005-09-16 2007-04-26 Toray Ind Inc Wrap film and its manufacturing method
JP4841368B2 (en) * 2005-09-28 2011-12-21 株式会社興人 Polyethylene-based crosslinked shrink film
US8637126B2 (en) * 2006-02-06 2014-01-28 International Paper Co. Biodegradable paper-based laminate with oxygen and moisture barrier properties and method for making biodegradable paper-based laminate
JP4917997B2 (en) * 2007-08-16 2012-04-18 東洋アドレ株式会社 Easily peelable adhesive resin composition for polyethylene resin and use of this composition as a lid
JP2014029048A (en) * 2012-07-06 2014-02-13 Keiwa Inc Food packaging sheet and method for manufacturing the food packaging sheet

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