JPH10157019A - Laminated film, its manufacture, and its manufacturing apparatus - Google Patents
Laminated film, its manufacture, and its manufacturing apparatusInfo
- Publication number
- JPH10157019A JPH10157019A JP8318152A JP31815296A JPH10157019A JP H10157019 A JPH10157019 A JP H10157019A JP 8318152 A JP8318152 A JP 8318152A JP 31815296 A JP31815296 A JP 31815296A JP H10157019 A JPH10157019 A JP H10157019A
- Authority
- JP
- Japan
- Prior art keywords
- film
- laminated
- heating
- unit
- adhesive layer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000004519 manufacturing process Methods 0.000 title claims description 22
- 239000012790 adhesive layer Substances 0.000 claims abstract description 62
- 239000000853 adhesive Substances 0.000 claims abstract description 56
- 230000001070 adhesive effect Effects 0.000 claims abstract description 56
- 238000010894 electron beam technology Methods 0.000 claims abstract description 22
- 238000010438 heat treatment Methods 0.000 claims description 49
- 238000000576 coating method Methods 0.000 claims description 20
- 239000011248 coating agent Substances 0.000 claims description 18
- 238000000034 method Methods 0.000 claims description 17
- 238000010030 laminating Methods 0.000 claims description 12
- 238000007789 sealing Methods 0.000 claims description 8
- 238000004804 winding Methods 0.000 claims description 7
- 239000003795 chemical substances by application Substances 0.000 claims description 3
- 230000006835 compression Effects 0.000 claims 1
- 238000007906 compression Methods 0.000 claims 1
- 238000009499 grossing Methods 0.000 claims 1
- 239000010410 layer Substances 0.000 claims 1
- 239000010408 film Substances 0.000 description 152
- 239000002904 solvent Substances 0.000 description 10
- 238000003475 lamination Methods 0.000 description 9
- 238000012360 testing method Methods 0.000 description 7
- 230000000052 comparative effect Effects 0.000 description 6
- -1 benzoin alkyl ether Chemical class 0.000 description 5
- 238000012545 processing Methods 0.000 description 5
- 239000004743 Polypropylene Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 229920000728 polyester Polymers 0.000 description 4
- 229920001155 polypropylene Polymers 0.000 description 4
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 description 3
- 230000002950 deficient Effects 0.000 description 3
- 238000003825 pressing Methods 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- CERQOIWHTDAKMF-UHFFFAOYSA-M Methacrylate Chemical compound CC(=C)C([O-])=O CERQOIWHTDAKMF-UHFFFAOYSA-M 0.000 description 2
- 239000004721 Polyphenylene oxide Substances 0.000 description 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229920000570 polyether Polymers 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 239000010409 thin film Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229910052725 zinc Inorganic materials 0.000 description 2
- 239000011701 zinc Substances 0.000 description 2
- POYODSZSSBWJPD-UHFFFAOYSA-N 2-methylprop-2-enoyloxy 2-methylprop-2-eneperoxoate Chemical compound CC(=C)C(=O)OOOC(=O)C(C)=C POYODSZSSBWJPD-UHFFFAOYSA-N 0.000 description 1
- 125000003903 2-propenyl group Chemical group [H]C([*])([H])C([H])=C([H])[H] 0.000 description 1
- YZCKVEUIGOORGS-OUBTZVSYSA-N Deuterium Chemical compound [2H] YZCKVEUIGOORGS-OUBTZVSYSA-N 0.000 description 1
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 244000028419 Styrax benzoin Species 0.000 description 1
- 235000000126 Styrax benzoin Nutrition 0.000 description 1
- 235000008411 Sumatra benzointree Nutrition 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 125000003647 acryloyl group Chemical group O=C([*])C([H])=C([H])[H] 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 229960002130 benzoin Drugs 0.000 description 1
- RWCCWEUUXYIKHB-UHFFFAOYSA-N benzophenone Chemical compound C=1C=CC=CC=1C(=O)C1=CC=CC=C1 RWCCWEUUXYIKHB-UHFFFAOYSA-N 0.000 description 1
- 239000012965 benzophenone Substances 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 238000002788 crimping Methods 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- ISAOCJYIOMOJEB-UHFFFAOYSA-N desyl alcohol Natural products C=1C=CC=CC=1C(O)C(=O)C1=CC=CC=C1 ISAOCJYIOMOJEB-UHFFFAOYSA-N 0.000 description 1
- 229910052805 deuterium Inorganic materials 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000009820 dry lamination Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- MHCLJIVVJQQNKQ-UHFFFAOYSA-N ethyl carbamate;2-methylprop-2-enoic acid Chemical compound CCOC(N)=O.CC(=C)C(O)=O MHCLJIVVJQQNKQ-UHFFFAOYSA-N 0.000 description 1
- UHESRSKEBRADOO-UHFFFAOYSA-N ethyl carbamate;prop-2-enoic acid Chemical compound OC(=O)C=C.CCOC(N)=O UHESRSKEBRADOO-UHFFFAOYSA-N 0.000 description 1
- 229920006242 ethylene acrylic acid copolymer Polymers 0.000 description 1
- 229920005648 ethylene methacrylic acid copolymer Polymers 0.000 description 1
- 239000005038 ethylene vinyl acetate Substances 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 238000009459 flexible packaging Methods 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 125000000524 functional group Chemical group 0.000 description 1
- 235000019382 gum benzoic Nutrition 0.000 description 1
- 229920001903 high density polyethylene Polymers 0.000 description 1
- 239000004700 high-density polyethylene Substances 0.000 description 1
- 238000010348 incorporation Methods 0.000 description 1
- 239000003999 initiator Substances 0.000 description 1
- 239000012948 isocyanate Substances 0.000 description 1
- 150000002513 isocyanates Chemical class 0.000 description 1
- 239000005001 laminate film Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 125000005395 methacrylic acid group Chemical group 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 239000012299 nitrogen atmosphere Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 229920006280 packaging film Polymers 0.000 description 1
- 239000012785 packaging film Substances 0.000 description 1
- 239000005022 packaging material Substances 0.000 description 1
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- KCTAWXVAICEBSD-UHFFFAOYSA-N prop-2-enoyloxy prop-2-eneperoxoate Chemical compound C=CC(=O)OOOC(=O)C=C KCTAWXVAICEBSD-UHFFFAOYSA-N 0.000 description 1
- 239000013557 residual solvent Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 229910001415 sodium ion Inorganic materials 0.000 description 1
- 229910052718 tin Inorganic materials 0.000 description 1
- 239000011135 tin Substances 0.000 description 1
- 238000009281 ultraviolet germicidal irradiation Methods 0.000 description 1
- 238000007738 vacuum evaporation Methods 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
Landscapes
- Application Of Or Painting With Fluid Materials (AREA)
- Laminated Bodies (AREA)
Abstract
Description
【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION
【０００１】[0001]
【発明の属する技術分野】本発明は、電子線若しくは紫
外線照射により硬化する無溶剤型接着剤を用いて積層接
着（ラミネート）した積層フィルム及びその積層フィル
ムの製造方法及びその製造装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a laminated film laminated and bonded using a solventless adhesive which is cured by irradiation with an electron beam or ultraviolet rays, a method for producing the laminated film, and an apparatus for producing the laminated film.
【０００２】[0002]
【従来技術】従来から、食品、医薬品等の軟質包装フィ
ルムとして使用される積層フィルムは、無溶剤型接着剤
を用いて積層接着（ラミネート）した積層フィルムがあ
り、その積層フィルムの製造方法も広く知られている。2. Description of the Related Art Conventionally, laminated films used as flexible packaging films for foods, pharmaceuticals and the like include laminated films which are laminated and bonded (laminated) using a non-solvent type adhesive, and the production method of the laminated film is also wide. Are known.
【０００３】この積層フィルムの製造は、溶剤を全く含
有しない、室温ではかなり高粘度の接着剤を８０〜１０
０℃程度に加温して、８００〜１３００ｃｐs 程度に低
粘度化したものを、複数のロールからなる塗布ユニット
により基材フィルムに転移させ、その直後に別のフィル
ムと重ね合わせて、一対の圧着ロールを通すことにより
ラミネートするものであり、このようにしてラミネート
された上記積層フィルムは、室温下２〜３日間で接着剤
の硬化が完了する。[0003] The production of this laminated film requires the use of an adhesive containing no solvent at all and having a very high viscosity at room temperature.
Heated to about 0 ° C. and reduced in viscosity to about 800 to 1300 cps, transferred to a base film by a coating unit composed of a plurality of rolls, and immediately thereafter, superimposed on another film to form a pair of pressure bonding Lamination is performed by passing through a roll, and curing of the adhesive is completed in the laminated film thus laminated at room temperature for 2 to 3 days.
【０００４】このような無溶剤型接着剤は、ポウレタン
系のものが主流であり、空気中の水蒸気が接着剤の硬化
に関与し、硬化に伴って二酸化炭素を発生するものであ
る。[0004] Such solventless adhesives are mainly of the urethane type, and water vapor in the air is involved in the curing of the adhesive, and carbon dioxide is generated with the curing.
【０００５】このような無溶剤型接着剤を用いて積層接
着するラミネート方法は、公知の溶剤可溶型の接着剤を
用いるドライラミネート法に比べ、溶剤を乾燥させるオ
ーブンが不要であったり、接着剤の塗布量が少なくて済
むなどのメリットがあり、また、できあがったラミネー
ト品の残留溶剤の心配なく火炎の心配がない、また、排
出溶剤に関する公害問題がない等多くのメリットがあ
る。[0005] The laminating method of laminating and bonding using such a solventless adhesive does not require an oven for drying a solvent, and does not require an oven, as compared with the dry laminating method using a known solvent-soluble adhesive. There are many advantages, such as a small amount of the agent to be applied, and there is no need to worry about the residual solvent in the finished laminate and no fire, and there is no pollution problem with the discharged solvent.
【０００６】また、ラミネート加工性についても公知の
ドライラミネート法に比べ、２倍〜３倍のスピードで加
工できるといった高生産性も達成できる。[0006] In addition, high productivity such that lamination can be performed at twice to three times the speed of a known dry lamination method can be achieved.
【０００７】最近では、ポリウレタン系接着剤から、電
子線又は紫外線の照射により硬化する接着剤を無溶剤型
ラミネートに利用することが試みやれている。Recently, attempts have been made to use a polyurethane-based adhesive which is cured by irradiation with an electron beam or ultraviolet rays in a solventless laminate.
【０００８】一般的に、無溶剤型接着剤によるラミネー
トは、比較的高速でフィルムをラミネートするために、
塗布ユニットで接着剤を塗布する際又は圧着ロールで貼
り合わせる際に空気を巻き込み、貼り合わせ時にできあ
がったフィルムの外観が白化したり虹模様等の外観不良
が発生するなどの問題があった。[0008] In general, lamination with a solventless adhesive is used for laminating a film at a relatively high speed.
When the adhesive is applied by the application unit or when the adhesive is applied by a pressure roll, air is entrapped, and there is a problem in that the appearance of the film formed at the time of bonding becomes white or a defective appearance such as a rainbow pattern occurs.
【０００９】[0009]
【発明が解決しようとする課題】このような問題点を解
決するために、接着剤の粘度をより低粘度化したり、レ
ベレング改良をするといった接着剤自体の改良や、圧着
ロールの圧力や温度を最適化するなど加工条件の最適化
をすることで外観不良を解消しようとしていた。特に電
子線、紫外線硬化型といった瞬間的に接着剤が硬化して
しまう場合は、上記の外観問題は非常に大きな問題とな
る。In order to solve such problems, the adhesive itself has been improved by lowering the viscosity of the adhesive or improving the leveling, and the pressure and temperature of the pressure roll have been reduced. By optimizing the processing conditions, such as optimizing, it was trying to eliminate poor appearance. In particular, when the adhesive is instantaneously cured such as an electron beam or an ultraviolet curing type, the appearance problem described above becomes a very serious problem.
【００１０】そこで、本発明は上記問題点を解決するた
めの方法およびその装置を提供するものである。Accordingly, the present invention provides a method and an apparatus for solving the above problems.
【００１１】[0011]
【課題を解決するための手段】本発明の第１の発明は、
一方のフィルムＡと、該フィルムＡ上に電子線若しくは
紫外線にて硬化する無溶剤型接着剤を用いて塗布形成さ
れた無溶剤型接着剤層Ｂと、該無溶剤型接着剤層Ｂ上に
積層接着された他方のフィルムＣとにより形成され、前
記フィルムＡとフィルムＣとは、加熱軟化により馴染ん
で平滑化されたそれぞれ無溶剤型接着剤層Ｂのフィルム
Ａ側平滑面ｂ１とフィルムＣ側平滑面ｂ２とを介して積
層接着していることを特徴とする積層フィルムである。Means for Solving the Problems A first invention of the present invention is:
One film A, a solventless adhesive layer B formed on the film A by using a solventless adhesive curable by an electron beam or ultraviolet light, and a film on the solventless adhesive layer B The film A and the film C are formed by the other film C that is laminated and bonded, and the film A and the film C are respectively smoothed by heating and softening. A laminated film characterized by being laminated and adhered via a smooth surface b2.
【００１２】また本発明は、上記第１の発明の積層フィ
ルムにおいて、前記一方のフィルムＡが基材フィルム、
他方のフィルムＣが熱シール性フィルムである積層フィ
ルムである。The present invention also provides the laminated film according to the first aspect, wherein the one film A is a base film,
The other film C is a laminated film that is a heat-sealing film.
【００１３】また本発明は、上記第１の発明の積層フィ
ルムにおいて、積層接着した前記一方のフィルムＡと他
方のフィルムＣとの間に存在する気泡の占める面積率が
２５％以下である積層フィルムである。[0013] The present invention also provides the laminated film according to the first aspect of the present invention, wherein the area ratio of the air bubbles existing between the laminated and bonded one film A and the other film C is 25% or less. It is.
【００１４】次に、本発明の第２の発明は、一方のフィ
ルムＡを巻き出し部から連続的に巻き出し、電子線若し
くは紫外線にて硬化する無溶剤型接着剤を塗布ユニット
により該フィルムＡの片面に塗布して無溶剤型接着剤層
Ｂを形成し、該接着剤層Ｂの塗布面に別の巻出部から巻
き出された他方のフィルムＣを圧着ロールユニットによ
り積層接着する積層フィルムの製造方法において、前記
塗布ユニットと圧着ロールユニットとの間に設けられた
加熱ユニットにより、前記一方のフィルムＡ上に塗布さ
れた接着剤層Ｂを加熱して平滑化した後に、他方のフィ
ルムＣと積層接着することを特徴とする積層フィルムの
製造方法である。Next, in the second invention of the present invention, one of the films A is continuously unwound from the unwinding portion, and a non-solvent type adhesive curable by an electron beam or ultraviolet rays is applied to the film A by a coating unit. To form a non-solvent type adhesive layer B by applying to one side of the above, and laminate the other film C unwound from another unwinding portion to the application surface of the adhesive layer B by laminating and bonding with a pressure roll unit. In the manufacturing method, after the adhesive layer B applied on the one film A is heated and smoothed by a heating unit provided between the application unit and the pressure roll unit, the other film C And a method of producing a laminated film.
【００１５】また本発明は、上記第２の発明の積層フィ
ルムの製造方法おいて、前記加熱ユニットが、電熱線加
熱、赤外線加熱、高周波加熱のいずれかである積層フィ
ルムの製造方法である。Further, the present invention is the method for producing a laminated film according to the second aspect of the present invention, wherein the heating unit is any one of heating wire heating, infrared heating and high frequency heating.
【００１６】また本発明は、上記第２の発明の積層フィ
ルムの製造方法おいて、前記一方のフィルムＡが、基材
フィルム、他方のフィルムＣが、熱シール性フィルムで
ある積層フィルムの製造方法である。Further, the present invention provides the method for producing a laminated film according to the second invention, wherein the one film A is a base film and the other film C is a heat-sealing film. It is.
【００１７】次に、本発明の第３の発明は、一方のフィ
ルムＡを連続的に巻き出す第１給紙ユニットと、このフ
ィルムＡ上に無溶剤型接着剤を塗布する塗布ユニット
と、他方のフィルムＢを連続的に巻き出す第２給紙ユニ
ットと、前記一方のフィルムＡと他方のフィルムＢとを
前記接着剤を介して重ね合わせ圧着して積層フィルムを
得る圧着ロールユニットと、この積層フィルムを連続的
に巻き取る巻取ユニットとを少なくとも備えるラミネー
ト装置において、前記塗布ユニットと圧着ロールユニッ
トとの間に、前記一方のフィルムＡ上に塗布された前記
接着剤を加熱して平滑化する加熱ユニットを設けたこと
を特徴とする積層フィルムの製造装置である。Next, a third invention of the present invention is to provide a first paper feed unit for continuously unwinding one of the films A, a coating unit for applying a solventless adhesive on the film A, and a second unit. A second sheet feeding unit for continuously unwinding the film B, a pressure roll unit for laminating the one film A and the other film B via the adhesive to obtain a laminated film, In a laminating apparatus including at least a winding unit for continuously winding a film, the adhesive applied on the one film A is smoothed by heating between the coating unit and the pressing roll unit. An apparatus for producing a laminated film, comprising a heating unit.
【００１８】また本発明は、上記第３の発明の積層フィ
ルムの製造装置において、前記加熱ユニットが、電熱線
加熱、赤外線加熱、高周波加熱のいずれかである積層フ
ィルムの製造装置である。Further, the present invention is the apparatus for manufacturing a laminated film according to the third aspect of the present invention, wherein the heating unit is any one of heating wire heating, infrared heating and high frequency heating.
【００１９】[0019]
【作用】本発明の上記第１の発明の積層フィルムは、一
方のフィルムＡと他方のフィルムＣが、電子線若しくは
紫外線照射により硬化した無溶剤型接着剤層Ｂにて互い
に積層接着されている積層フィルムであって、一方のフ
ィルムＡと無溶剤型接着剤層Ｂとは、無溶剤型接着剤層
Ｂを加熱軟化させることによりフィルムＡ側にその面に
馴染んだ状態で平滑化された気泡の抱き込みのない平滑
面ｂ１を接着界面として積層接着され、他方のフィルム
Ｃと無溶剤型接着剤層Ｂとは、無溶剤型接着剤層Ｂを加
熱軟化させることにより平滑化された気泡の抱き込みの
ない平滑面ｂ２を接着界面として積層接着されている。In the laminated film according to the first aspect of the present invention, one film A and the other film C are laminated and bonded to each other with a solventless adhesive layer B cured by irradiation with an electron beam or ultraviolet rays. A laminated film, wherein one of the film A and the solventless adhesive layer B is a bubble which has been smoothed in a state in which the solventless adhesive layer B is heated and softened so as to be adapted to the surface of the film A. The other film C and the solvent-free adhesive layer B are bonded together with the smooth surface b1 having no embrace of the adhesive layer as an adhesive interface, and the bubble C smoothed by heating and softening the solvent-free adhesive layer B by heating. Laminated bonding is performed with the smooth surface b2 having no embrace as the bonding interface.
【００２０】そのため、フィルムＡと無溶剤型接着剤層
Ｂ及び無溶剤型接着剤層ＢとフィルムＣとは、それぞれ
気泡が存在しないか若しくはほとんど気泡の存在しない
均一な接着界面によって積層接着されており、気泡によ
る曇りがなく、積層フィルムの外観が良好であり、さら
には気泡による剥離などの発生がなく、良好な接着強度
を以て接着されている。For this reason, the film A and the solventless adhesive layer B, and the solventless adhesive layer B and the film C are laminated and bonded by a uniform adhesive interface having no or almost no bubbles. There is no fogging due to air bubbles, the appearance of the laminated film is good, furthermore, there is no occurrence of peeling or the like due to air bubbles, and the film is adhered with good adhesive strength.
【００２１】次に、本発明の上記第２の発明の積層フィ
ルムの製造方法は、基材フィルムなど１方のフィルムＡ
上に塗布ユニットの塗布ロールを介して塗布した無溶剤
型接着剤による接着剤層Ｂが、圧着ロールで基材フィル
ムなど他方のフィルムＣと重ね合わせられながら圧着ラ
ミネートされる間に、前記無溶剤型接着剤層Ｂの表面
は、加熱ユニットにある赤外線、高周波等の加熱手段に
より加熱されて一方のフィルムＡ上にてより軟化し平滑
化されて、他方のフィルムＢとラミネートされる手前で
均一にレベリングされる。Next, the method for producing a laminated film according to the second aspect of the present invention is a method for producing a laminated film such as a base film.
While the adhesive layer B made of a solvent-free adhesive applied over the application roll of the application unit is pressure-bonded and laminated with another film C such as a base film by a pressure roll, the solventless The surface of the mold adhesive layer B is heated by a heating unit such as an infrared ray or a high frequency wave in a heating unit, is softened and smoothed on one film A, and is uniform before being laminated with the other film B. Leveled.
【００２２】そのため、圧着ロールユニットにて一方の
フィルムＡと他方のフィルムＢとをラミネートする際
に、一方のフィルムＡと接着剤層Ｂとの接触界面、又は
その接着剤層Ｂと他方のフィルムＣとの接触界面への空
気の混入を低減でき、ラミネート完了時点での積層フィ
ルムの外観不良、さらには接着不良が解消できる。Therefore, when laminating one film A and the other film B with a pressure roll unit, the contact interface between the one film A and the adhesive layer B or the adhesive layer B and the other film The mixing of air into the contact interface with C can be reduced, and the defective appearance and the poor adhesion of the laminated film at the time of completion of lamination can be eliminated.
【００２３】また、上記第２の発明方法では、無溶剤型
接着剤に電子線または紫外線の照射により硬化する接着
剤を用いているので、高速によるラミネート加工が達成
できる。In the method of the second aspect of the present invention, since an adhesive that cures by irradiation with an electron beam or ultraviolet rays is used as the solventless adhesive, lamination at high speed can be achieved.
【００２４】次に、第３の発明の積層フィルムの製造装
置は、基材フィルムなど一方のフィルムＡ上に塗布ユニ
ットの塗布ロールを介して塗布した無溶剤型接着剤によ
る接着剤層Ｂが、圧着ロールで基材フィルムなど他方の
フィルムＣとラミネートされる間に、加熱ユニットにあ
る赤外線、高周波等の加熱手段により接着剤層Ｂは平滑
化して均一にレベリングでき、ラミネート時に接着剤層
Ｂ近傍に保持される空気が極めて低減できるので、電子
線や紫外線硬化型のような瞬間的に接着剤が硬化してし
まい時間とともに接着剤のレベリングが期待できないよ
うなプロセスの場合においても、ラミネート完了後の積
層フィルムの出来上がりの外観不良や接着不良が発生し
ない。Next, the apparatus for manufacturing a laminated film according to the third invention comprises an adhesive layer B made of a non-solvent type adhesive applied to one film A such as a base film via an application roll of an application unit. During lamination with the other film C such as a base film by a pressure roll, the adhesive layer B can be smoothed and leveled uniformly by heating means such as infrared rays and high frequency waves in a heating unit, and the vicinity of the adhesive layer B at the time of lamination. Even in the case of processes where the adhesive hardens momentarily and the leveling of the adhesive cannot be expected with time, such as electron beam or ultraviolet curing type, since the air held in No defective appearance or poor adhesion of the finished laminated film occurs.
【００２５】[0025]
【発明の実施の形態】以下、第１の発明の積層フィルム
の実施の形態を、図１に示す側断面図に従って詳細に説
明すれば、一方のフィルムＡと、該フィルムＡ上に塗布
形成されて電子線若しくは紫外線照射にて硬化した無溶
剤型接着剤層Ｂと、該無溶剤型接着剤層Ｂの硬化前に該
接着剤層Ｂ上に重ね合わせ押圧して積層されて、電子線
若しくは紫外線の照射により接着された他方のフィルム
Ｃとからなる積層フィルムＤである。BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, an embodiment of the laminated film of the first invention will be described in detail with reference to the side sectional view shown in FIG. Solvent-free adhesive layer B cured by irradiation with an electron beam or ultraviolet light, and laminated by pressing and overlapping on the adhesive layer B before curing of the solvent-free adhesive layer B, This is a laminated film D including the other film C adhered by irradiation of ultraviolet rays.
【００２６】上記積層フィルムＤの一方のフィルムＡと
無溶剤型接着剤層Ｂは、該フィルムＡ上に塗布形成され
た無溶剤型接着剤層Ｂを加熱して軟化させる（フロー値
を上げる）ことにより、該無溶剤型接着剤層Ｂのフィル
ムＡ側積層界面がフィルムＡ上にスプレッド（フロー）
して、該フィルムＡ側に馴染んだ状態で平滑面ｂ１が形
成されて、その平滑面ｂ１を介して積層接着している。One of the film A and the solventless adhesive layer B of the laminated film D is softened by heating the solventless adhesive layer B formed on the film A by heating (increasing the flow value). Thereby, the lamination interface of the solvent-free adhesive layer B on the film A side spreads (flows) on the film A.
Then, a smooth surface b1 is formed in a state of being familiar with the film A side, and the film A is laminated and adhered via the smooth surface b1.
【００２７】そして、上記積層フィルムＤの他方のフィ
ルムＣと無溶剤型接着剤層Ｂは、前記フィルムＡ上に塗
布形成された無溶剤型接着剤層Ｂを加熱して軟化させる
（フロー値を上げる）ことにより、該無溶剤型接着剤層
ＢのフィルムＣ側積層界面がスプレッド（フロー）して
平滑面ｂ２が形成され、該平滑面ｂ２を介して積層接着
している。The other film C of the laminated film D and the solvent-free adhesive layer B are softened by heating the solvent-free adhesive layer B formed on the film A by heating (flow value: As a result, the laminating interface on the film C side of the solventless adhesive layer B spreads (flows) to form a smooth surface b2, and the laminating and bonding is performed via the smooth surface b2.
【００２８】次に、第２の発明の積層フィルムの製造方
法、及び第３の発明の積層フィルムの製造装置のそれぞ
れ実施の形態を、図２に示す製造装置の概要側面図に従
って詳細に説明する。Next, an embodiment of the method for manufacturing a laminated film of the second invention and the apparatus for manufacturing a laminated film of the third invention will be described in detail with reference to the schematic side view of the manufacturing apparatus shown in FIG. .
【００２９】巻出部１よりインフィードロール２により
一方のフィルムＡ（基材フィルム）を巻き出し供給し、
このフィルムＡを塗布ユニット３の塗布ロール３ａと圧
ロール３ｂの間に導入する。One of the films A (base film) is unwound from the unwinding section 1 by the infeed roll 2 and supplied.
The film A is introduced between the coating roll 3a and the pressure roll 3b of the coating unit 3.
【００３０】塗布ユニット３では、連続的に搬送供給さ
れるフィルムＡの片面に、塗布ロール３ａにより電子線
若しくは紫外線により硬化する無溶剤型接着剤４をコー
ィングして、無溶剤型接着剤層Ｂを形成する。なお、無
溶剤型接着剤４は、塗布ロール３ａには、互いに接触回
転する供給ロール３ｃ、３ｄの間に供給された無溶剤型
接着剤４を一方の供給ロール３ｄに転移供給し、その供
給ロール３ｄに接触して回転する塗布ロール３ａに供給
する。In the coating unit 3, a solventless adhesive 4 curable by an electron beam or ultraviolet rays is coated on one side of a film A which is continuously conveyed and supplied by a coating roll 3a, and a solventless adhesive layer B is coated. To form The solventless adhesive 4 is transferred to the application roll 3a by transferring the solventless adhesive 4 supplied between the supply rolls 3c and 3d rotating in contact with each other to one supply roll 3d. It is supplied to the application roll 3a which rotates in contact with the roll 3d.
【００３１】その後、前記フィルムＡ上の前記無溶剤型
接着剤層Ｂを、電熱線加熱装置、赤外線加熱装置、高周
波加熱装置など加熱手段５ａを備えた加熱ユニット５に
より加熱して軟化させてフローを上げる。Thereafter, the solvent-free adhesive layer B on the film A is heated and softened by a heating unit 5 provided with a heating means 5a such as a heating device for heating, an infrared heating device or a high frequency heating device. Raise.
【００３２】フィルムＡ上で軟化した前記無溶剤型接着
剤層Ｂは、その層表面が平滑化（平坦化）するととも
に、軟化した前記接着剤層ＢのフィルムＡとの接触界面
は、該フィルムＡとの接触面に馴染んで平滑化（平坦
化）する。The solvent-free adhesive layer B softened on the film A has its surface smoothed (flattened), and the contact interface of the softened adhesive layer B with the film A is as follows. A is smoothed (flattened) by adjusting to the contact surface with A.
【００３３】続いて前記一方のフィルムＡは、別の巻出
部６から供給された他方のフィルムＣ（熱シール性フィ
ルム）と、圧着ロールユニット７にある互いに対向する
圧着ロール７ａ、７ｂの間に導入されてニップされ、直
後に配置された電子線もしくは紫外線の照射部８を通過
させることで無溶剤型接着剤層Ｂを硬化させて、対向す
る１対の押圧ロール９ａ、９ｂによるアウトフィードロ
ール９に導入されて排出送行され、巻き取り部１０で連
続的に巻き取ることによって積層フィルムＤを製造する
ものである。Subsequently, the one film A is placed between the other film C (heat-sealing film) supplied from another unwinding section 6 and the opposing pressure rolls 7a and 7b in the pressure roll unit 7. The solvent-free adhesive layer B is cured by passing through an electron beam or ultraviolet irradiation unit 8 disposed immediately after being nipped and nipped, and is out-fed by a pair of opposing pressing rolls 9a and 9b. The laminated film D is manufactured by being introduced into the roll 9, discharged and fed, and continuously wound by the winding unit 10.
【００３４】本発明において使用する上記電子線若しく
は紫外線照射により硬化する無溶剤型接着剤は、一液硬
化型の無溶剤型湿分硬化型または二液硬化型のイソシア
ネート系の公知の材料を、下記の電子線若しくは紫外線
で硬化する接着剤材料に一部添加して用いることも可能
である。その時の接着剤層Ｂの硬化については、照射部
８での電子線若しくは紫外線の照射による硬化の他に、
巻き取り部１０で連続的に巻き取られた後の積層フィル
ムＤを、通常室温〜６０℃雰囲気で１〜５日間の養生を
行い接着剤の確実な硬化反応を促進させる。The non-solvent type adhesive which is cured by irradiation with an electron beam or an ultraviolet ray used in the present invention is a known one-component type non-solvent type moisture-curable or two-part type isocyanate-based material. It is also possible to add a part to the following adhesive material which is cured by an electron beam or ultraviolet rays and use it. Regarding the curing of the adhesive layer B at that time, in addition to the curing by the irradiation of the electron beam or the ultraviolet ray in the irradiation unit 8,
The laminated film D that has been continuously wound by the winding unit 10 is usually cured at room temperature to 60 ° C. for 1 to 5 days to promote a reliable curing reaction of the adhesive.
【００３５】電子線照射により硬化する無溶剤型接着剤
としては、光重合性オリゴマーと呼ばれるアクリロイル
基、アリル基、ビニル基などの官能基を１〜数個有する
オリゴマーが樹脂主成分であり、電離放射線の照射によ
り重合してポリマー化するものである。また、硬化反応
の高さから、アクリル系、メタクリル系が主に用いら
れ、例えば、ポリエステルアクリレート、ポリエステル
メタクリレート、エポキシアクリレート、エポキシメタ
クリレート、ウレタンアクリレート、ウレタンメタクリ
レート、ポリエーテルアクリレート、ポリエーテルメタ
クリレート、その他、分子量が数百〜数千のオリゴマー
等様々の材料設計が可能である。また、この接着剤を構
成する樹脂の改質や、粘度調整としての光重合性モノマ
ー、オリゴマーや各種添加剤の添加をしても一向に構わ
ない。As a solvent-free adhesive which is cured by electron beam irradiation, an oligomer having one to several functional groups such as an acryloyl group, an allyl group, and a vinyl group, which is called a photopolymerizable oligomer, is a resin main component. It is polymerized by irradiation with radiation. Further, from the height of the curing reaction, acrylic, methacrylic is mainly used, for example, polyester acrylate, polyester methacrylate, epoxy acrylate, epoxy methacrylate, urethane acrylate, urethane methacrylate, polyether acrylate, polyether methacrylate, and others, Various material designs such as oligomers having a molecular weight of hundreds to thousands are possible. It is also possible to modify the resin constituting the adhesive or to add a photopolymerizable monomer, oligomer or various additives for adjusting the viscosity.
【００３６】本発明に用いる電子線照射方式について
は、エレクトロンカーテン方式、スキャンニング方式、
あるいは、これらの組み合わせ方式等、どのような方式
であってもよく特に限定しない。また、照射条件として
は、５０ＫＶ〜３００ＫＶの加速電圧で１５ＫＧｙ〜５
０ＫＧｙの線量で接着剤を硬化させることができる。The electron beam irradiation system used in the present invention includes an electron curtain system, a scanning system,
Alternatively, any method such as a combination of these methods may be used without any particular limitation. Irradiation conditions are as follows: an acceleration voltage of 50 KV to 300 KV;
The adhesive can be cured with a dose of 0 KGy.
【００３７】また、紫外線照射により硬化する無溶剤型
接着剤としては、上記の電子線硬化型の接着剤組成に、
紫外線の吸収によりフリーラジカルを生成させるベンゾ
インアルキルエーテルやベンゾフェノン等の公知のラジ
カル光重合開始剤を添加したものである。The solvent-free adhesive which is cured by irradiation with ultraviolet light includes the above-mentioned electron beam-curable adhesive composition,
A known radical photopolymerization initiator such as benzoin alkyl ether or benzophenone which generates free radicals by absorbing ultraviolet light is added.
【００３８】また、紫外線照射については、透明容器に
紫外線を大量に放出しやすい水銀、亜鉛、鉛、重水素を
封入し、その中で放電を起こさせ、紫外線を取り出す公
知のランプが利用できる。For UV irradiation, a known lamp can be used in which a transparent container is filled with mercury, zinc, lead, and deuterium, which easily emits a large amount of ultraviolet light, in which a discharge is generated and ultraviolet light is extracted.
【００３９】前記塗布ユニット３における一方のフィル
ムＡ（例えば基材フィルム）上への塗布方法及び塗布手
段としては、一般的に公知であるグラビアコート、ロー
ルコート、キスタッチコート、ダイコート、フレキソ、
オフセット等いずれも用いることができる。As a coating method and a coating means on one film A (for example, a base film) in the coating unit 3, generally known gravure coat, roll coat, kiss touch coat, die coat, flexo,
Any of offset and the like can be used.
【００４０】本発明に係る一方のフィルムＡ、又は／及
び、他方のフィルムは、一軸または二軸に延伸されたポ
リプロピレン、ポリエステル、ポリアミド等、または、
これらの基材の片面にアルミニウム、スズ、マグネシウ
ム、珪素などの金属若しくは金属酸化物を公知のドライ
プロセス法（真空蒸着など蒸着法）により薄膜形成した
もの等が例示でき、これらフィルムは、単層フィルムま
たは紙やアルミ箔等の積層フィルムを使用できる。厚み
は、それぞれ９μｍ〜５００μｍ程度が適当であるが、
特に限定されない。The one film A and / or the other film according to the present invention may be made of uniaxially or biaxially stretched polypropylene, polyester, polyamide or the like, or
Examples of such base materials include a thin film formed on one side of a metal or metal oxide such as aluminum, tin, magnesium, or silicon by a known dry process method (evaporation method such as vacuum evaporation). A film or a laminated film such as paper or aluminum foil can be used. The thickness is suitably about 9 μm to 500 μm, respectively.
There is no particular limitation.
【００４１】本発明においては、例えば、一方のフィル
ムＡには基材フィルムを用い、他方のフィルムＣには、
該基材フィルムよりも熱融点の低い熱シール性フィルム
を使用することができる。In the present invention, for example, a base film is used for one film A, and a film C is used for the other film C.
A heat-sealing film having a lower thermal melting point than the base film can be used.
【００４２】熱シール性フィルムとしては、包装材料と
して使用する際に、熱溶融させて接着させるためのもの
であって、例えば、低密度、中密度、高密度各種ポリエ
チレン、エチレンー 酢酸ビニル共重合体、未延伸ポリプ
ロピレン、エチレンー メタクリル酸共重合体、エチレン
ー アクリル酸共重合体、あるいはこれらを亜鉛、ナトリ
ウムイオンで架橋させたもの等をフィルム化させたも
の、さらには、上記同様に片面に金属や金属酸化物など
の薄膜を形成したものなどが利用でき、厚みは、１０μ
ｍ〜１００μｍ程度のものが適当である。The heat-sealing film is used for melting and bonding when used as a packaging material. Examples thereof include low-density, medium-density, high-density polyethylene, and ethylene-vinyl acetate copolymer. , Unstretched polypropylene, ethylene-methacrylic acid copolymer, ethylene-acrylic acid copolymer, or those formed by crosslinking these with zinc or sodium ions, and the like. A thin film of oxide or the like can be used.
Those having a size of about m to 100 μm are suitable.
【００４３】次に、本発明における貼り合わせについて
述べると、無溶剤型接着剤は塗布ユニット３のコーティ
ングロール３ａにより一方のフィルムＡ（基材フィル
ム）の片面にコーティングするものであるが、この接着
剤の粘度を下げてフィルムＡへの濡れ性を向上させるた
めに、ロール３ａは５０〜１００℃程度に加温されてい
ることが適当である。Next, the bonding in the present invention will be described. The non-solvent type adhesive is coated on one side of one film A (base film) by the coating roll 3a of the coating unit 3. In order to lower the viscosity of the agent and improve the wettability to the film A, it is appropriate that the roll 3a is heated to about 50 to 100 ° C.
【００４４】また、前記一方のフィルムＡ（基材フィル
ム）上にコーティングされた接着剤表面を平坦化させる
ために、放射型の赤外線ヒータや温水が内部に循環され
た金属ロールを接着剤層Ｂに圧着させたり、熱風を吹き
付けたりする方法、又はラジオ波（ＲＦ）を接着剤層Ｂ
に照射させて接着剤層Ｂの平坦化を促進することができ
る。なお、最適条件は適宜に設定できるが、この接着剤
層Ｂの表面温度が３５〜８０℃程度になるようにするこ
とが好ましい。Further, in order to flatten the surface of the adhesive coated on the one film A (base film), a radiation type infrared heater or a metal roll in which hot water is circulated is applied to the adhesive layer B. To the adhesive layer B, or a method of blowing hot air, or applying a radio wave (RF) to the adhesive layer B.
To promote the flattening of the adhesive layer B. The optimum conditions can be set as appropriate, but it is preferable that the surface temperature of the adhesive layer B is about 35 to 80 ° C.
【００４５】[0045]
【実施例】以下に本発明の具体的実施例を示す。EXAMPLES Specific examples of the present invention will be described below.
【００４６】＜実施例１＞図２に示した装置を用いて、
一方のフィルムＡ（基材フィルム）として、厚さ２０μ
ｍの二軸延伸ポリプロピレンフィルムを一方の巻出部１
より巻き出し供給して、ポリエステルアクリレートから
なる無溶剤型の電子線硬化型接着剤４をコーティングロ
ール３ａによりロールコート法にて、加工速度１２０ｍ
／分、塗布量１．８ｇ／ｍ2 となるように塗布して接着
剤層Ｂを形成した。次に、加熱ユニット５にて５００Ｗ
の赤外線ヒーターにより接着剤層Ｂの表面に予備加熱を
行い、接着剤層Ｂの表面温度が６０℃になるように調整
した。続いて、前記一方のフィルムＡの接着剤層Ｂ面
に、別の巻出部６から巻き出し供給された未延伸ポリプ
ロピレンフィルム３０μｍを圧着ロール部７で、１０ｋ
ｇ／ｃｍ2 の条件でニップし、窒素雰囲気下で１７５ｋ
Ｖ−２０ｋＧｙの電子線を照射して接着剤層Ｂを硬化処
理しながら巻取部１０にて連続的に巻き取り、本発明の
積層フィルムＤを作製した。<Embodiment 1> Using the apparatus shown in FIG.
As one film A (base film), a thickness of 20 μm
m of the biaxially stretched polypropylene film
It is unwound and supplied, and a solventless electron beam-curable adhesive 4 made of polyester acrylate is processed at a processing speed of 120 m by a roll coating method using a coating roll 3a.
The adhesive layer B was formed by applying the solution at a rate of 1.8 g / m 2 per minute. Next, at the heating unit 5, 500 W
The surface of the adhesive layer B was preliminarily heated by the infrared heater described above to adjust the surface temperature of the adhesive layer B to 60 ° C. Subsequently, the unstretched polypropylene film 30 μm unwound and supplied from another unwinding unit 6 is applied to the surface of the adhesive layer B of the one film A by a pressure roll unit 7 for 10 k.
g / cm 2 , 175k under nitrogen atmosphere
While the adhesive layer B was irradiated with an electron beam of V-20 kGy, the adhesive layer B was continuously wound up at the winding section 10 while being cured, thereby producing a laminated film D of the present invention.
【００４７】＜実施例２＞図２の装置において、赤外線
ヒータの代わりに乾燥熱風を用い無溶剤型接着剤層Ｂの
表面温度を５０℃とした以外は、上記実施例１と同様に
実施して、本発明の積層フィルムＤを作製した。<Example 2> In the apparatus shown in Fig. 2, the same procedure as in Example 1 was carried out except that the surface temperature of the solventless adhesive layer B was changed to 50 ° C using dry hot air instead of the infrared heater. Thus, a laminated film D of the present invention was produced.
【００４８】＜実施例３＞加工速度を２００ｍ／分とし
た以外は、上記実施例１と同様に実施して、本発明の積
層フィルムＤを作製した。Example 3 A laminated film D of the present invention was produced in the same manner as in Example 1 except that the processing speed was set to 200 m / min.
【００４９】＜実施例４＞加工速度を３５０ｍ／分とし
た以外は、上記実施例１と同様に実施して、本発明の積
層フィルムＤを作製した。Example 4 A laminated film D of the present invention was produced in the same manner as in Example 1 except that the processing speed was 350 m / min.
【００５０】＜比較例１＞無溶剤型接着剤層Ｂを赤外線
ヒーターにより加熱しない以外は、実施例１と同様に実
施して、比較例の積層フィルムを作製した。Comparative Example 1 A laminated film of a comparative example was produced in the same manner as in Example 1 except that the solventless adhesive layer B was not heated by an infrared heater.
【００５１】＜比較試験＞上記実施例１〜実施例４で得
られた本発明の積層フィルムの試料と、上記比較例１で
得られた積層フィルムについて、そのラミネート強度及
びヒートシール強度を試験し、また得られた積層フィル
ムの外観を評価した。その結果を表１に示す。<Comparative Test> The laminate strength and heat seal strength of the sample of the laminated film of the present invention obtained in Examples 1 to 4 and the laminated film obtained in Comparative Example 1 were tested. The appearance of the obtained laminated film was evaluated. Table 1 shows the results.
【００５２】＜試験条件＞ ・ラミネート強度試験 試験幅 １５ｍｍ 剥離速度 ３００ｍｍ/ 分 剥離ＴＨ角度 Ｔ剥離 ・ヒートシール強度試験 試料をその熱シール可能な同じ面同士で互いに重ね合わ
せ、温度１６０℃、圧力２ｋｇ／ｃｍ2 、時間１秒間で
ヒートシールバーによりシールした後、上記ラミネート
強度試験と同様の試験条件にてシール強度を測定した。 ・外観評価 試料を光学顕微鏡で観察し、積層フィルムのラミネート
内面に、エアー（気泡）が単位面積当たりどの位ある
か、その面積率を画像処理によりランク付けした。全く
エアー（気泡）がないもの（０％）を１０として、エア
ー（気泡）が８０％程度あるものを１として、その間を
均等に１０段階に分けて評価した。<Test Conditions> Laminate strength test Test width 15 mm Peeling speed 300 mm / min Peeling TH angle T Peeling Heat seal strength test Samples are superimposed on the same heat sealable surface, temperature 160 ° C., pressure 2 kg After sealing with a heat seal bar for 1 second / cm 2 and a time of 1 second, the seal strength was measured under the same test conditions as in the above laminate strength test. -Appearance evaluation The sample was observed with an optical microscope, and the area ratio of air (bubbles) per unit area on the inner surface of the laminate of the laminated film was ranked by image processing. A sample having no air (bubbles) (0%) was set to 10, and a sample having air (bubbles) of about 80% was set to 1, and the evaluation was equally divided into 10 stages.
【００５３】＜比較結果＞表１から判るように、本発明
によれば、外観上の問題の全くない綺麗なラミネートフ
ィルムができるとともに、ラミネート強度、ヒートシー
ル強度も問題なかった。これに対して、比較例の積層フ
ィルムには、気泡の発生が目立ち、外観不良が確認さ
れ、それに起因するラミネート強度低下が認められた。<Comparative Results> As can be seen from Table 1, according to the present invention, a clean laminate film having no problem in appearance was produced, and there was no problem in lamination strength and heat seal strength. On the other hand, in the laminated film of the comparative example, the generation of air bubbles was conspicuous, the appearance was poor, and a decrease in the laminate strength due to the occurrence was confirmed.
【００５４】[0054]
【表１】 [Table 1]
【００５５】[0055]
【発明の効果】以上説明しように、本発明によれば、一
方のフィルムにコーティングした無溶剤型接着剤層を、
塗布ユニットから圧着ロール間に設けられた加熱手段に
より加熱して該接着剤層を平滑化処理することにより、
接着剤近傍に混入したエアーにより発生する気泡を除去
して他方のフィルムとラミネートしており、高速塗工で
顕在化してくる接着剤塗工時の接着剤層内部およびフィ
ルムと接着剤層との界面へのエアーの混入に起因する気
泡を除去し、外観不良やラミネート強度低下を改善でき
る効果がある。As described above, according to the present invention, the solventless adhesive layer coated on one film is
By heating the adhesive layer by heating means provided between the application unit and the pressure roll to smooth the adhesive layer,
Air bubbles generated by air mixed in the vicinity of the adhesive are removed and laminated with the other film, and the inside of the adhesive layer and the film and the adhesive layer at the time of the adhesive coating that becomes apparent by high-speed coating are This has the effect of removing air bubbles due to the incorporation of air into the interface and improving poor appearance and reduction in laminate strength.
【図１】本発明の積層フィルムの一例を示す側断面図。FIG. 1 is a side sectional view showing an example of a laminated film of the present invention.
【図２】本発明の積層フィルムの製造方法、及びその製
造装置を説明する概要全体側面図。FIG. 2 is a schematic overall side view illustrating a method for manufacturing a laminated film and a manufacturing apparatus thereof according to the present invention.
Ａ…一方のフィルム Ｂ…無溶剤型接着剤層 Ｃ…他方
のフィルム Ｄ…積層フィルム ｂ1 …フィルムＡ側の平滑面 ｂ2
…フィルムＢ側の平滑面 １…巻出部 ２…インフィードロール ３…接着剤塗布
ユニット ４…接着剤 ５…加熱ユニット ６…巻出部 ７…圧着ロールユニッ
ト ８…電子線若しくは紫外線照射ユニット ９…アウトフ
ィードロール １０…巻取部A: One film B: Solvent-free adhesive layer C: The other film D: Laminated film b1: Smooth surface on film A side b2
... Smooth surface on the film B side 1 ... Unwinding unit 2 ... Infeed roll 3 ... Adhesive coating unit 4 ... Adhesive 5 ... Heating unit 6 ... Unwinding unit 7 ... Crimping roll unit 8 ... Electron beam or ultraviolet irradiation unit 9 ... Outfeed roll 10 ... Winding unit
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 ＦＩ Ｂ３２Ｂ 31/28 Ｂ３２Ｂ 31/28 ──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. 6 Identification code FI B32B 31/28 B32B 31/28
Claims (8)
子線若しくは紫外線にて硬化する無溶剤型接着剤を用い
て塗布形成された無溶剤型接着剤層Ｂと、該無溶剤型接
着剤層Ｂ上に積層接着された他方のフィルムＣとにより
形成され、前記フィルムＡとフィルムＣとは、加熱軟化
により馴染んで平滑化されたそれぞれ無溶剤型接着剤層
ＢのフィルムＡ側平滑面ｂ１とフィルムＣ側平滑面ｂ２
とを介して積層接着していることを特徴とする積層フィ
ルム。1. A film A, a solventless adhesive layer B formed on the film A by using a solventless adhesive curable by an electron beam or ultraviolet light, and the solventless adhesive The film A and the film C are formed by the other film C laminated and adhered on the agent layer B, and the film A and the film C are smoothed by the softening by heating, respectively, and the smooth surface of the solventless adhesive layer B on the film A side. b1 and film C side smooth surface b2
A laminated film characterized in that the laminated film is laminated and adhered through:
他方のフィルムＣが、熱シール性フィルムである請求項
１記載の積層フィルム。2. The method according to claim 1, wherein the one film A is a base film,
The laminated film according to claim 1, wherein the other film C is a heat-sealing film.
のフィルムＣとの間に存在する気泡の占める面積率が２
５％以下である請求項１又は請求項２記載の積層フィル
ム。3. An area ratio occupied by bubbles existing between the one film A and the other film C bonded and laminated is 2
The laminated film according to claim 1, wherein the content is 5% or less.
に巻き出し、電子線若しくは紫外線にて硬化する無溶剤
型接着剤を塗布ユニットにより該フィルムＡの片面に塗
布して無溶剤型接着剤層Ｂを形成し、該接着剤層Ｂの塗
布面に別の巻出部から巻き出された他方のフィルムＣを
圧着ロールユニットにより積層接着する積層フィルムの
製造方法において、前記塗布ユニットと圧着ロールユニ
ットとの間に設けられた加熱ユニットにより、前記一方
のフィルムＡ上に塗布された接着剤層Ｂを加熱して平滑
化した後に、他方のフィルムＣと積層接着することを特
徴とする積層フィルムの製造方法。4. A film A is continuously unwound from an unwinding portion, and a solventless adhesive which is cured by an electron beam or ultraviolet rays is applied to one side of the film A by a coating unit, and a solventless adhesive is applied. A method for producing a laminated film, comprising forming an adhesive layer B, and laminating and bonding the other film C unwound from another unwinding portion to the application surface of the adhesive layer B by a compression roll unit. The heating unit provided between the roll unit and the heating unit smoothes the adhesive layer B applied on the one film A, and then laminates and adheres to the other film C. Film production method.
加熱、高周波加熱のいずれかである請求項４記載の積層
フィルムの製造方法。5. The method for producing a laminated film according to claim 4, wherein said heating unit is any one of heating wire heating, infrared heating and high frequency heating.
他方のフィルムＣが、熱シール性フィルムである請求項
４又は請求項５記載の積層フィルムの製造方法。6. The one film A is a base film,
The method according to claim 4, wherein the other film C is a heat-sealing film.
給紙ユニットと、このフィルムＡ上に無溶剤型接着剤を
塗布する塗布ユニットと、他方のフィルムＢを連続的に
巻き出す第２給紙ユニットと、前記一方のフィルムＡと
他方のフィルムＢとを前記接着剤を介して重ね合わせ圧
着して積層フィルムを得る圧着ロールユニットと、この
積層フィルムを連続的に巻き取る巻取ユニットとを少な
くとも備えるラミネート装置において、前記塗布ユニッ
トと圧着ロールユニットとの間に、前記一方のフィルム
Ａ上に塗布された前記接着剤を加熱して平滑化する加熱
ユニットを設けたことを特徴とする積層フィルムの製造
装置。7. A method of unwinding one film A continuously.
A sheet feeding unit, a coating unit for applying a solventless adhesive on the film A, a second sheet feeding unit for continuously unwinding the other film B, and the one film A and the other film B In a laminating apparatus having at least a pressure roll unit that obtains a laminated film by superimposing and pressurizing via the adhesive, and a winding unit that continuously winds the laminated film, the application unit and the pressure roll unit An apparatus for manufacturing a laminated film, further comprising a heating unit for heating and smoothing the adhesive applied on the one film (A).
加熱、高周波加熱のいずれかである請求項７記載の積層
フィルムの製造装置。8. The laminated film manufacturing apparatus according to claim 7, wherein the heating unit is selected from heating wire heating, infrared heating, and high frequency heating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31815296A JP3806996B2 (en) | 1996-11-28 | 1996-11-28 | LAMINATED FILM, ITS MANUFACTURING METHOD, AND ITS MANUFACTURING DEVICE |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31815296A JP3806996B2 (en) | 1996-11-28 | 1996-11-28 | LAMINATED FILM, ITS MANUFACTURING METHOD, AND ITS MANUFACTURING DEVICE |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH10157019A true JPH10157019A (en) | 1998-06-16 |
| JP3806996B2 JP3806996B2 (en) | 2006-08-09 |
Family
ID=18096074
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP31815296A Expired - Fee Related JP3806996B2 (en) | 1996-11-28 | 1996-11-28 | LAMINATED FILM, ITS MANUFACTURING METHOD, AND ITS MANUFACTURING DEVICE |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3806996B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004532723A (en) * | 2001-03-19 | 2004-10-28 | スリーエム イノベイティブ プロパティズ カンパニー | Package and dispenser for thermosoftening moisture-curable materials |
| JP2009181046A (en) * | 2008-01-31 | 2009-08-13 | Sumitomo Chemical Co Ltd | Manufacturing method of polarizing plate |
| KR101083975B1 (en) * | 2003-04-28 | 2011-11-22 | 닛세이카가쿠가부시키가이샤 | Method for manufacturing thermal laminate and apparatus for manufacturing same |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5859812A (en) * | 1981-10-07 | 1983-04-09 | Sumitomo Heavy Ind Ltd | Production of laminate web by using solventless-type adhesives |
| JPH06106626A (en) * | 1992-09-30 | 1994-04-19 | Toppan Printing Co Ltd | Manufacture of laminate |
-
1996
- 1996-11-28 JP JP31815296A patent/JP3806996B2/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5859812A (en) * | 1981-10-07 | 1983-04-09 | Sumitomo Heavy Ind Ltd | Production of laminate web by using solventless-type adhesives |
| JPH06106626A (en) * | 1992-09-30 | 1994-04-19 | Toppan Printing Co Ltd | Manufacture of laminate |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004532723A (en) * | 2001-03-19 | 2004-10-28 | スリーエム イノベイティブ プロパティズ カンパニー | Package and dispenser for thermosoftening moisture-curable materials |
| KR101083975B1 (en) * | 2003-04-28 | 2011-11-22 | 닛세이카가쿠가부시키가이샤 | Method for manufacturing thermal laminate and apparatus for manufacturing same |
| JP2009181046A (en) * | 2008-01-31 | 2009-08-13 | Sumitomo Chemical Co Ltd | Manufacturing method of polarizing plate |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3806996B2 (en) | 2006-08-09 |
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