JPH0431506B2 - - Google Patents
Info
- Publication number
- JPH0431506B2 JPH0431506B2 JP61133282A JP13328286A JPH0431506B2 JP H0431506 B2 JPH0431506 B2 JP H0431506B2 JP 61133282 A JP61133282 A JP 61133282A JP 13328286 A JP13328286 A JP 13328286A JP H0431506 B2 JPH0431506 B2 JP H0431506B2
- Authority
- JP
- Japan
- Prior art keywords
- film
- scratch
- layer
- support
- adhesive
- 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.)
- Expired - Lifetime
Links
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/22—Secondary treatment of printed circuits
- H05K3/28—Applying non-metallic protective coatings
- H05K3/281—Applying non-metallic protective coatings by means of a preformed insulating foil
Landscapes
- Laminated Bodies (AREA)
Description
〔産業上の利用分野〕
本発明は写真焼付法によるプリント配線板の製
造工程において、パターン焼付け時の原画となる
写真に露光時も貼付した侭用いる表面保護粘着フ
イルムに関するものである。
〔従来の技術及び問題点〕
近年、プリント配線板の高密度化に伴ない、そ
の製造工程に写真焼付法の利用が増加している。
写真焼付法によるプリント配線板の製造法は銅張
り積層板などにフオトレジストを塗布し、之に配
線パターンとなるポジ若しくはネガの写真を介し
て紫外光を露光し、フオトレジストの非硬化部を
除去、洗浄した後、銅箔をエツチングし回路パタ
ーンを作成するものである。
上述した写真乳剤表面の保護粘着フイルムとし
ては既に市販されているものがあるが（日東電気
工業(株)、商品名ネオマスク）、該フイルムは耐擦
傷性に劣るために貼付時または貼付に至るまでの
間に傷が入つたり保護フイルムを貼付した写真の
取扱い中に傷が入り、そのためパターン形成の露
光時に透過率が低下したり、パターン欠陥を発生
したりするなどの悪影響を及ぼしている。また写
真に直接、耐擦傷性を有する樹脂を塗工・硬化さ
せて保護層を設ける場合には、ゴミ、異物の混入
に細心の注意を払わねばならないと同時に一度塗
工した写真に傷が入つたり塗工時にゴミ、異物の
混入があつたりした場合には写真そのものを再
度、原版から作製し直さなければならない不便さ
があつた。
〔問題点を解決するための手段〕
本発明者は上述した欠点を解決すべく検討を重
ねた結果、該表面保護粘着フイルムに、該表面保
護粘着フイルムの光透過性を減じない様に耐擦傷
性を付与する塗工層を設けることにより之等の欠
点を解決出来ることを見出した。
透明な耐擦傷性層を有しているこの様な表面保
護粘着フイルムは貼付などの取扱い中に傷が入り
難く、また傷が入つても容易に剥離交換が可能で
ある。耐擦傷性を有する層を新たに設けることに
より光透過率が低下し写真焼付け時のコントラス
ト低下が懸念されるが、耐擦傷性層に用いる樹脂
の屈折率が支持体の屈折率より小さい樹脂を用い
れば表面保護粘着フイルムの表面での光の反射が
防止され、逆に光透過率が向上する。この事実は
支持体の他の一方の面に設けた粘着剤層にも当嵌
まる。即ち粘着剤の屈折率が支持体の屈折率より
も小さい粘着剤を用いれば更に光透過率は向上す
る。耐擦傷性層及び粘着剤層の各々の厚みは光透
過率のみに就いて云えば夫々最適値（光透過率が
最大になる値）が存在するが、実用上は、夫々の
層の他の機能（耐際傷性、接着性）との兼ね合い
で決定すればよい。
本発明で用いられる透明な耐擦傷性層として
は、フツ素系樹脂のような低い表面エネルギーと
低い摩擦係数を持つ塗膜を形成するもの；オルガ
ノポリシロキサン，多官能アクリレート，オルコ
キシメチル（またはメチロール）メラミンなどの
高度に架橋した塗膜を形成するもの；などから選
ばれる。フツ素系樹脂としては、ポリ四ふつ化エ
チレン，ペルフルオロアルコキシふつ素樹脂，四
ふつ化エチレン六フツ化プロピレン共重合体，エ
チレン四ふつ化エチレン共重合体，ふつ化ビニリ
デン，ポリクロロ三ふつ化エチレン，ふつ化ビニ
ルなどが挙げられる。オルガノポリシロキサンと
しては１〜４官能のオルガノアルコキシシランを
成分として用い、オルガノアルコキシシランの加
水分解により多次元架橋構造のオルガノポリシロ
キサンを形成させる。多官能アクリレートはラジ
カル重合により架橋構造を作るが、ラジカル重合
は紫外線、電子線などのエネルギー線その他によ
り可能であり、多官能（主として３官能）アクリ
ル化合物と反応性希釈剤、光反応開始剤、光増感
剤、各種添加剤を加えた塗工液を支持体に塗工す
る。多官能アクリレータとしては、エステルアク
リレート，ウレタンアクリレート，エポキシアク
リレート，メラミンアクリレートなどが挙げられ
る。この他にメラミン系、アルキド系、ウレタン
系及びアクリル系の熱硬化性樹脂など、その塗膜
が透明で支持体フイルムより耐擦傷性を有する塗
膜を形成する樹脂であれば、何れの樹脂を用いて
もよい。更に好ましくは支持体上に形成させた塗
膜の屈折率が支持体フイルムの屈折率よりも小さ
くなる樹脂を用いれば、該表面保護粘着フイルム
の光透過率が向上し使用上好適となる。光線透過
率の向上は耐擦傷性層と支持体フイルムとの界面
における光の干渉効果によると考えられる。
粘着剤層に用いる粘着剤としては透明且つ無着
色で、所望の接着力の得られるものであれば特に
限定するものではないが、光透過性を損なわない
という観点からアクリル系粘着剤が好適である。
本発明で用いられる支持体フイルムとしては透
明で耐擦傷性層を設けることが出来るプラスチツ
クスフイルムであればよいが、その例としては、
ポリエチレンテレフタレート，ポリカーボネー
ト，ポリエチレン，ポリプロピレン，ポリメチル
ペンテン，アセテート，ポリ塩化ビニル，ナイロ
ン，ポリエーテルスルフオンなどが挙げられる。
支持体フイルムの厚みは特に限定されないが、
光線透過率、製品価格の点から50μ以下が望まし
い。
第１図は本発明の保護粘着フイルムの断面図で
あり、第２図は使用状態を示す断面図である。
図面中、１は透明耐擦傷性層、２は支持体フイ
ルム、３は粘着剤層、４は剥離フイルム（紙）、
５は写真フイルム乳剤層、６は写真フイルム支持
体である。
〔実施例〕
以下、実施例を挙げて更に詳しく説明するが、
本発明は本実施例の数値により限定されるもので
はない。
実施例 １
6μのポリエステルフイルム（帝人(株)製、屈折
率1.68）の一方のめに、塗膜とした時に耐擦傷性
を有する紫外線硬化型樹脂（屈折率1.53、エポキ
シアクリレートをオリゴマーとし、之に反応性希
釈剤、光反応開始剤などを添加したもの）を約５
ｇ／m2塗工した後、紫外線を照射し硬化させた。
該支持体フイルムの他方の面にアクリル系粘着剤
（屈折率1.46）を約３ｇ／m2転写法により塗工し
表面保護粘着フイルムとした。
該保護粘着フイルムの耐擦傷性を有する面を上
にしてガラス板に貼付し、その上に１Kg／cm2の荷
重を掛けたスチールウール（＃0000）を当て100
回摺動した後の該表面粘着フイルムのヘイズ度変
化を曇度計（日本電色工業(株)、商品名ND−
H67）で測定し、耐擦傷性の目安とした。光透過
率は剥離フイルムを剥がし測定した。（日立分
光々度計330.開口率7.4％積分球）分光スペクト
ルから波長400ナノメーターでの透過率を光線透
過率とした。之は写真焼付時の光源波長が400ナ
ノメーター付近であるためである。
比較例 １
実施例１で用いた支持体フイルム（6μポリエ
ステルフイルム）を用い光線透過率のみ測定し
た。
比較例 ２
実施例１において、耐擦傷性層を設けない他は
同様にして表面保護粘着フイルムとしたものを試
料とした。
比較例 ３
市販の表面保護粘着フイルム（日東電工社製、
商品名ネオマスク）
試験結果を次表に示す。
[Industrial Field of Application] The present invention relates to a surface protection adhesive film that is used in the manufacturing process of printed wiring boards by the photoprinting method, by being attached to a photograph that serves as an original image for pattern printing, even during exposure. [Prior Art and Problems] In recent years, as the density of printed wiring boards has increased, the use of photoprinting methods in the manufacturing process has increased.
The manufacturing method of printed wiring boards using the photoprinting method involves applying photoresist to a copper-clad laminate, etc., and then exposing the non-hardened portions of the photoresist to ultraviolet light through a positive or negative photograph that will become the wiring pattern. After removal and cleaning, the copper foil is etched to create a circuit pattern. There is already a commercially available protective adhesive film for the surface of the photographic emulsion mentioned above (Nitto Electric Industries Co., Ltd., trade name: Neomask), but this film has poor scratch resistance and is difficult to apply at or before application. Scratches may occur between the protective film or during handling of photographs with a protective film attached, resulting in negative effects such as a decrease in transmittance during exposure for pattern formation and generation of pattern defects. In addition, when applying and curing a scratch-resistant resin directly to a photo to provide a protective layer, extreme care must be taken to prevent dust and foreign matter from entering the photo, and at the same time, once coated, the photo may be scratched. If dust or foreign matter were to get mixed in during the coating process, there was the inconvenience of having to re-produce the photograph itself from the original plate. [Means for Solving the Problems] As a result of repeated studies in order to solve the above-mentioned drawbacks, the inventors of the present invention have made the surface protection adhesive film scratch resistant so as not to reduce the light transmittance of the surface protection adhesive film. It has been found that these drawbacks can be overcome by providing a coating layer that imparts properties. Such a surface protection adhesive film having a transparent scratch-resistant layer is difficult to be scratched during handling such as pasting, and even if it is scratched, it can be easily peeled off and replaced. Providing a new layer with scratch resistance reduces light transmittance and there is a concern that the contrast during photo printing will decrease. If used, the reflection of light on the surface of the surface protection adhesive film will be prevented, and on the contrary, the light transmittance will be improved. This fact also applies to the adhesive layer provided on the other side of the support. That is, if an adhesive whose refractive index is smaller than that of the support is used, the light transmittance can be further improved. Regarding the thickness of each of the scratch-resistant layer and the adhesive layer, there is an optimum value (a value that maximizes the light transmittance) in terms of light transmittance, but in practical terms, the thickness of each layer It may be determined based on the function (scratch resistance, adhesiveness). The transparent scratch-resistant layer used in the present invention is a material that forms a coating film with low surface energy and low coefficient of friction, such as fluororesin; organopolysiloxane, polyfunctional acrylate, orkoxymethyl (or methylol). Selected from those that form highly crosslinked coatings such as melamine; Fluorine resins include polytetrafluoroethylene, perfluoroalkoxyfluorocarbon resin, tetrafluoroethylene hexafluoropropylene copolymer, ethylene tetrafluoroethylene copolymer, vinylidene fluoride, polychlorotrifluoroethylene, Examples include fluorinated vinyl. As the organopolysiloxane, a mono- to tetrafunctional organoalkoxysilane is used as a component, and an organopolysiloxane having a multidimensional crosslinked structure is formed by hydrolysis of the organoalkoxysilane. Multifunctional acrylates create a crosslinked structure through radical polymerization, but radical polymerization is possible using energy rays such as ultraviolet rays and electron beams. A coating solution containing a photosensitizer and various additives is applied to the support. Examples of the polyfunctional acrylate include ester acrylate, urethane acrylate, epoxy acrylate, and melamine acrylate. In addition, any resin such as melamine-based, alkyd-based, urethane-based, and acrylic thermosetting resins can be used as long as the coating film is transparent and has more scratch resistance than the support film. May be used. More preferably, if a resin is used in which the refractive index of the coating film formed on the support is smaller than the refractive index of the support film, the light transmittance of the surface protection adhesive film will be improved and it will be suitable for use. The improvement in light transmittance is thought to be due to the light interference effect at the interface between the scratch-resistant layer and the support film. The adhesive used in the adhesive layer is not particularly limited as long as it is transparent, uncolored, and can provide the desired adhesive strength, but acrylic adhesives are preferred from the viewpoint of not impairing light transmittance. be. The support film used in the present invention may be any transparent plastic film on which a scratch-resistant layer can be provided; examples thereof include:
Examples include polyethylene terephthalate, polycarbonate, polyethylene, polypropylene, polymethylpentene, acetate, polyvinyl chloride, nylon, and polyether sulfon. The thickness of the support film is not particularly limited, but
A thickness of 50μ or less is desirable from the viewpoint of light transmittance and product price. FIG. 1 is a sectional view of the protective adhesive film of the present invention, and FIG. 2 is a sectional view showing the state of use. In the drawing, 1 is a transparent scratch-resistant layer, 2 is a support film, 3 is an adhesive layer, 4 is a release film (paper),
5 is a photographic film emulsion layer, and 6 is a photographic film support. [Example] The following is a more detailed explanation using examples.
The present invention is not limited to the numerical values of this example. Example 1 One side of a 6μ polyester film (manufactured by Teijin Ltd., refractive index 1.68) was coated with an ultraviolet curable resin (refractive index 1.53, epoxy acrylate oligomer, which has scratch resistance when formed into a coating). (with reactive diluent, photoinitiator, etc.) added to about 5
After coating at g/m 2 , it was cured by irradiation with ultraviolet rays.
An acrylic adhesive (refractive index: 1.46) was coated on the other side of the support film by a transfer method of about 3 g/m 2 to obtain a surface protection adhesive film. The protective adhesive film was attached to a glass plate with the scratch-resistant side facing up, and steel wool (#0000) with a load of 1 kg/cm 2 was placed on top of it for 100 minutes.
After rotating and sliding, the haze degree change of the surface adhesive film was measured using a haze meter (Nippon Denshoku Kogyo Co., Ltd., product name: ND-).
H67) and used as a guideline for scratch resistance. The light transmittance was measured by peeling off the release film. (Hitachi spectrophotometer 330, aperture ratio 7.4% integrating sphere) The transmittance at a wavelength of 400 nanometers from the spectroscopic spectrum was defined as the light transmittance. This is because the wavelength of the light source during photo printing is around 400 nanometers. Comparative Example 1 Using the support film (6μ polyester film) used in Example 1, only the light transmittance was measured. Comparative Example 2 A surface protection adhesive film was prepared in the same manner as in Example 1 except that the scratch-resistant layer was not provided, and a sample was used. Comparative Example 3 Commercially available surface protection adhesive film (manufactured by Nitto Denko Corporation,
(Product name: Neomask) The test results are shown in the table below.
本発明はプラスチツクフイルムの一方の面に耐
擦傷性層を有し、該支持体フイルムの他方の面に
粘着剤層を有する表面保護粘着フイルムに関する
ものであり、その効果を列挙すると以下の通りで
ある。
(1) 写真フイルムに貼付する作業時及び／または
貼付後の表面に傷が著しく入り難い。
(2) 支持体フイルムより屈折率の低い耐擦傷性透
明樹脂層及び／または、粘着剤層を用いること
により光線透過率が向上する。
The present invention relates to a surface protection adhesive film having a scratch-resistant layer on one side of a plastic film and an adhesive layer on the other side of the support film, and its effects are listed as follows. be. (1) The surface of the photographic film is hardly scratched during and/or after pasting. (2) Light transmittance is improved by using a scratch-resistant transparent resin layer and/or an adhesive layer that has a lower refractive index than the support film.
第１図は本発明の表面保護粘着フイルムの断面
図であり、第２図はその使用状態を示す断面図で
ある。
１……透明耐擦傷性層、２……支持体フイル
ム、３……粘着剤層、４……剥離フイルム（紙）、
５……写真フイルム乳剤層、６……写真フイルム
支持体。
FIG. 1 is a sectional view of the surface protection adhesive film of the present invention, and FIG. 2 is a sectional view showing its use. 1... Transparent scratch-resistant layer, 2... Support film, 3... Adhesive layer, 4... Release film (paper),
5... Photographic film emulsion layer, 6... Photographic film support.
Claims (1)
方の面に粘着剤層が、他方の面に耐擦傷性層が設
けられており、該粘着剤層及び／または耐擦傷性
層の屈折率が支持体の屈折率より小さいことを特
徴とする透明な耐擦傷性層を有する表面保護粘着
フイルム。 ２ 支持体フイルムの厚みが50μ以下である特許
請求の範囲第１項記載の透明な耐擦傷性層を有す
る表面保護粘着フイルム。[Claims] 1. A support made of plastic film is provided with an adhesive layer on one side and a scratch-resistant layer on the other side, and the adhesive layer and/or the scratch-resistant layer are A surface protection adhesive film having a transparent scratch-resistant layer characterized by a refractive index lower than that of a support. 2. A surface protection adhesive film having a transparent scratch-resistant layer according to claim 1, wherein the thickness of the support film is 50 μm or less.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61133282A JPS62294539A (en) | 1986-06-09 | 1986-06-09 | Surface protective adhesive film with transparent mar-proof layer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61133282A JPS62294539A (en) | 1986-06-09 | 1986-06-09 | Surface protective adhesive film with transparent mar-proof layer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62294539A JPS62294539A (en) | 1987-12-22 |
| JPH0431506B2 true JPH0431506B2 (en) | 1992-05-26 |
Family
ID=15100997
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61133282A Granted JPS62294539A (en) | 1986-06-09 | 1986-06-09 | Surface protective adhesive film with transparent mar-proof layer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62294539A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002169269A (en) * | 2000-11-30 | 2002-06-14 | Kimoto & Co Ltd | Method of making photomask and photomask |
| JP2002169264A (en) * | 2000-11-30 | 2002-06-14 | Kimoto & Co Ltd | Method of making photomask and photomask |
| TWI486388B (en) * | 2008-03-31 | 2015-06-01 | Kolon Inc | Polyester film for optical application |
-
1986
- 1986-06-09 JP JP61133282A patent/JPS62294539A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62294539A (en) | 1987-12-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA1319341C (en) | Method of supporting a louvered plastic film | |
| CA2137207C (en) | Transparent functional membrane containing functional ultrafine particles, transparent functional film, and process for producing the same | |
| US5168001A (en) | Perfluoropolymer coated pellicle | |
| US5085907A (en) | Abrasion-resistant protective laminates | |
| JP2008129130A (en) | Hard coat film | |
| JPH11288225A (en) | Transfer material for display front board | |
| JPH0431506B2 (en) | ||
| JP3470606B2 (en) | Curved lenticular screen | |
| EP0348310B1 (en) | Abrasion-resistant protective laminates | |
| JPH0620601Y2 (en) | Multilayer sheet for transferable protective film formation | |
| JP2005288780A (en) | Glare shielding hard coat transfer material | |
| JPH1177874A (en) | Surface protecting film for printed matter | |
| JP4134159B2 (en) | Anti-glare film | |
| JP3095814B2 (en) | Overlay film for disassembling transparent document and method for attaching color document using the film | |
| JP4257803B2 (en) | Surface protection film | |
| JP2003069281A (en) | Electromagnetic wave shield sheet and method of manufacturing the same | |
| JP3141311B2 (en) | Display object | |
| JP3171607B2 (en) | hologram | |
| JP2589276Y2 (en) | Surface protection film | |
| JP3369684B2 (en) | Antireflection film and method for producing the same | |
| JPH11268166A (en) | Protective film transfer material | |
| JP2003344982A (en) | Photographic emulsion surface protective layer transferring sheet, method for forming photographic emulsion surface protective layer and photomask with protective layer | |
| JP2003167108A (en) | Diffusive reflector, transfer original, transfer base film and transfer film used for manufacturing the reflector, and method for manufacturing diffusive reflector | |
| JPH09160222A (en) | Pellicle | |
| CA2306285C (en) | Transparent functional membrane containing functional ultrafine particles, transparent functional film, and process for producing the same |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |