JP2016026937A5

JP2016026937A5 - Release film

Info

Publication number: JP2016026937A5
Application number: JP2015194766A
Authority: JP
Filing date: 2015-09-30
Publication date: 2017-06-22
Anticipated expiration: 2034-03-26

Description

本発明は、離型フィルムに関する。 The present invention also relates to the release fill-time.

本発明によれば、
第１離型層と、第２離型層とを備える離型フィルムであって、
当該離型フィルムは、前記第１離型層を成形される対象物表面に配置し、前記第２離型層を当て板に配置して用いられ、
前記第１離型層は、第１ポリエステル樹脂を含み、
前記第２離型層はオレフィン系樹脂または第２ポリエステル樹脂を含み、
指示薬滴定法により測定した、前記第１離型層の末端カルボン酸量が１４．３以上４０未満であり、
前記第１離型層の表面１０点平均粗さ（Ｒｚ）が、１．２３μｍ以上６．１μｍ以下であり、前記第２離型層の表面１０点平均粗さ（Ｒｚ）が、０．６２μｍ以上９．５μｍ以下であり、
前記第１離型層の粗さ曲線要素の平均長さ（Ｒｓｍ）が、前記第２離型層の粗さ曲線要素の平均長さ（Ｒｓｍ）よりも大きい、離型フィルムが提供される。 According to the present invention,
A release film comprising a first release layer and a second release layer,
The release film is used by arranging the first release layer on the surface of the object to be molded, and arranging the second release layer on a backing plate,
The first release layer includes a first polyester resin,
The second release layer includes an olefin resin or a second polyester resin,
The amount of terminal carboxylic acid in the first release layer measured by an indicator titration method is 14.3 or more and less than 40,
The surface 10 point average roughness (Rz) of the first release layer is 1.23 μm or more and 6.1 μm or less, and the surface 10 point average roughness (Rz) of the second release layer is 0.62 μm. And not more than 9.5 μm,
A release film is provided in which the average length (Rsm) of the roughness curve element of the first release layer is larger than the average length (Rsm) of the roughness curve element of the second release layer .

以上、本発明の実施形態について述べたが、これらは本発明の例示であり、上記以外の様々な構成を採用することもできる。
以下、参考形態の例を付記する。
１．ポリエステル樹脂材料を含む第１離型層を有する離型フィルムであって、
ＡＳＴＭＤ２８５７に準じて３５℃で測定した前記第１離型層の固有粘度が、０．９以上１．５以下である、離型フィルム。
２．前記ポリエステル樹脂材料が、ポリブチレンテレフタレート樹脂である１．に記載の離型フィルム。
３．当該第１離型層上に、クッション層を有する１．または２．に記載の離型フィルム。
４．前記第１離型層の入射角度６０°における光の反射率である光沢度が６〜１５０である、１．乃至３．のいずれか一つに記載の離型フィルム。
５．前記第１離型層の厚みが、２０μｍ以上３０μｍ以下である１．乃至４．のいずれか一つに記載の離型フィルム。
６．前記第１離型層の粗さ曲線要素の平均長さ（Ｒｓｍ）が９０μｍ以上である、１．乃至５．のいずれか一つに記載の離型フィルム。
７．当該離型フィルムが、さらに第２離型層を有し、前記第１離型層、前記クッション層、及び前記第２離型層の順に積層された三層構造を形成してなる３．乃至６．のいずれか一つに記載の離型フィルム。
８．前記クッション層が、αオレフィン系重合体と、αオレフィン−（メタ）アクリル酸エステル共重合体との混合物を用いて形成される３．乃至７．のいずれか一つに記載の離型フィルム。
９．カバーレイフィルムまたは銅張積層板の表面に、前記第１離型層側が接するように重ねて用いられる１．乃至８．のいずれか一つに記載の離型フィルム。
１０．１．乃至９．のいずれか一つに記載の離型フィルムの前記第１離型層が対象物側になるように、前記対象物上に前記離型フィルムを配置する工程と、
前記離型フィルムが配置された前記対象物に対し、加熱プレスを行う工程と、
を含み、
離型フィルムを配置する前記工程において、前記対象物の前記離型フィルムが配置される面が、半硬化状態の熱硬化性樹脂を含む材料によって形成されている離型フィルムの使用方法。 As mentioned above, although embodiment of this invention was described, these are illustrations of this invention and various structures other than the above are also employable.
Hereinafter, examples of the reference form will be added.
1. A release film having a first release layer containing a polyester resin material,
A release film, wherein the first release layer has an intrinsic viscosity of 0.9 or more and 1.5 or less measured at 35 ° C. according to ASTM D2857.
2. 1. The polyester resin material is a polybutylene terephthalate resin A release film as described in 1.
3. 1. having a cushion layer on the first release layer; Or 2. A release film as described in 1.
4). 1. Glossiness which is a reflectance of light at an incident angle of 60 ° of the first release layer is 6 to 150. To 3. A release film according to any one of the above.
5. 1. The thickness of the first release layer is 20 μm or more and 30 μm or less. To 4. A release film according to any one of the above.
6). 1. The average length (Rsm) of the roughness curve element of the first release layer is 90 μm or more. To 5. A release film according to any one of the above.
7). 2. The release film further includes a second release layer, and forms a three-layer structure in which the first release layer, the cushion layer, and the second release layer are laminated in this order. To 6. A release film according to any one of the above.
8). 2. The cushion layer is formed using a mixture of an α-olefin polymer and an α-olefin- (meth) acrylate copolymer. To 7. A release film according to any one of the above.
9. 1. Used in such a manner that the first release layer side is in contact with the surface of the coverlay film or copper clad laminate. To 8. A release film according to any one of the above.
10. 1. Thru 9. Placing the release film on the object such that the first release layer of the release film according to any one of the above is on the object side;
A step of performing a heat press on the object on which the release film is disposed;
Including
In the step of disposing a release film, a method for using a release film, wherein a surface of the object on which the release film is disposed is formed of a material containing a semi-cured thermosetting resin.

Claims

A release film comprising a first release layer and a second release layer,
The release film is used by arranging the first release layer on the surface of the object to be molded, and arranging the second release layer on a backing plate,
The first release layer includes a first polyester resin,
The second release layer includes an olefin resin or a second polyester resin,
The amount of terminal carboxylic acid in the first release layer measured by an indicator titration method is 14.3 or more and less than 40,
The surface 10 point average roughness (Rz) of the first release layer is 1.23 μm or more and 6.1 μm or less, and the surface 10 point average roughness (Rz) of the second release layer is 0.62 μm. And not more than 9.5 μm,
A release film in which an average length (Rsm) of roughness curve elements of the first release layer is larger than an average length (Rsm) of roughness curve elements of the second release layer .

The release film according to claim 1,
A release film , wherein the first release layer has an intrinsic viscosity of 0.9 or more and 1.5 or less measured at 35 ° C. according to ASTM D2857 .

The release film according to claim 1 or 2,
The mold release film whose glossiness which is the reflectance of the light in the incident angle of 60 degrees of the said 1st mold release layer is 6-150 .

It is a release film of any one of Claim 1 to 3,
The thickness of the first release layer is 20 μm or more and 30 μm or less;
A release film in which the thickness of the second release layer is 5 μm or more and 60 μm or less .

The release film according to any one of claims 1 to 4,
The mold release film whose average length (Rsm) of the roughness curve element of the said 1st mold release layer is 92.1 micrometers or more and 328 micrometers or less .

A release film according to any one of claims 1 to 5,
The release film whose average length (Rsm) of the roughness curve element of a said 2nd release layer is 197 micrometers or more and 400 micrometers or less .

The release film according to any one of claims 1 to 6,
In the release film, the first release layer, the cushion layer, and the second release layer are laminated in this order,
The cushion layer is composed of an α-olefin- (meth) acrylic ester copolymer, a mixture of polybutylene terephthalate and 1,4-cyclohexanedimethanol copolymerized polyethylene terephthalate, an α-olefin polymer, and an α-olefin- (meth) such as ethylene. A release film which is a mixture of an acrylic ester copolymer or a mixture of polypropylene and an ethylene-methyl methacrylate copolymer .

The release film according to any one of claims 1 to 7,
The object to be molded includes a thermosetting resin,
The thermosetting resin is a release film , which is an imide resin .

The release film according to claim 8, wherein
The thermosetting resin is a release film in a semi-cured state .

It is a release film of any one of Claim 1 to 9,
The first polyester resin is a release film which is polybutylene terephthalate.