JP2002155476A - Mold release paper and synthetic leather produced by using the same - Google Patents
Mold release paper and synthetic leather produced by using the sameInfo
- Publication number
- JP2002155476A JP2002155476A JP2000350566A JP2000350566A JP2002155476A JP 2002155476 A JP2002155476 A JP 2002155476A JP 2000350566 A JP2000350566 A JP 2000350566A JP 2000350566 A JP2000350566 A JP 2000350566A JP 2002155476 A JP2002155476 A JP 2002155476A
- Authority
- JP
- Japan
- Prior art keywords
- release paper
- release
- resin layer
- paper
- resin
- 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
Landscapes
- Synthetic Leather, Interior Materials Or Flexible Sheet Materials (AREA)
- Laminated Bodies (AREA)
- Shaping Of Tube Ends By Bending Or Straightening (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、離型紙及びそれを
用いて製造された合成皮革に関し、更に詳しくは、合成
皮革を製造するために用いる離型紙であって、合成皮革
の表皮層の表面に、ピーチスキン感と呼ばれるピーチス
キンに似た外観と触感を付与できる離型紙と、それを用
いて製造されたピーチスキン調の繊細な外観と触感を備
えた合成皮革に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a release paper and a synthetic leather produced using the same, and more particularly, to a release paper used for producing a synthetic leather, wherein the surface of a skin layer of the synthetic leather is provided. The present invention also relates to a release paper capable of imparting an appearance and a tactile sensation similar to peach skin, which is called a peach skin feeling, and a synthetic leather having a delicate peach skin-like appearance and a tactile sensation manufactured using the same.
【０００２】[0002]
【従来の技術】従来から製造されている合成皮革には、
ポリウレタンレザー、セミ合皮、塩化ビニルレザー（Ｐ
ＶＣレザーとも呼ばれる）などがある。ポリウレタンレ
ザー（以下、ＰＵレザーと略記する）の製造方法として
は、例えば、離型紙上にペースト状の表皮層用ポリウレ
タン樹脂を塗布し、乾燥、固化させた後、２液反応型ポ
リウレタン系接着剤で基布と貼り合わせて、５０〜７０
℃の熟成室内で２〜３日反応させた後に、離型紙を剥が
してＰＵレザーを製造する方法がある。2. Description of the Related Art Conventionally manufactured synthetic leather includes:
Polyurethane leather, semi synthetic leather, vinyl chloride leather (P
VC leather). As a method for producing polyurethane leather (hereinafter abbreviated as PU leather), for example, a paste-like polyurethane resin for a skin layer is coated on release paper, dried and solidified, and then a two-part reactive polyurethane adhesive is used. Paste with the base cloth at 50-70
There is a method in which a PU leather is manufactured by removing the release paper after reacting in an aging room at a temperature of 2 to 3 days.
【０００３】また、セミ合皮の製造方法としては、離型
紙上にペースト状の表皮層用ポリウレタン樹脂を塗布
し、乾燥、固化させた後、ポリ塩化ビニル発泡層を形成
して基布と貼り合わせ、その後、離型紙を剥がしてセミ
合皮を製造する方法がある。そして、ＰＶＣレザーの製
造方法としては、離型紙上にポリ塩化ビニルゾルを塗布
し、加熱、ゲル化させた後、ポリ塩化ビニル発泡層を形
成して基布と貼り合わせ、その後、離型紙を剥がしてＰ
ＶＣレザーを製造する方法がある。[0003] As a method for producing a semi-synthetic leather, a paste-like polyurethane resin for a skin layer is applied on release paper, dried and solidified, and then a polyvinyl chloride foam layer is formed and adhered to a base cloth. After that, there is a method of manufacturing semi-synthetic leather by peeling off the release paper. Then, as a method of manufacturing PVC leather, a polyvinyl chloride sol is applied on release paper, heated and gelled, then a polyvinyl chloride foam layer is formed and bonded to the base cloth, and then the release paper is peeled off. P
There is a method of manufacturing VC leather.
【０００４】このような合成皮革の製造方法で使用され
る離型紙としては、例えば、ＰＵレザーの製造用には、
基材紙に離型層としてポリプロピレンを厚さ２０〜５０
μｍ程度に積層して形成した離型紙が使用されている。
また、セミ合皮、またはＰＶＣレザーの製造用には、基
材紙に離型層としてメチルペンテン系樹脂を厚さ２０〜
５０μｍ程度に積層して形成した離型紙、または基材紙
に離型層としてアクリル系樹脂を厚さ２０〜１２０μｍ
程度に積層して形成した離型紙が使用されている。更
に、基材紙に離型層としてシリコーン樹脂を積層した離
型紙も使用されている。また、このような離型紙には、
必要に応じて種々の凹凸模様の型付け加工が施され、合
成皮革の表面にその凹凸による模様付けが行われてい
る。As a release paper used in such a method for producing synthetic leather, for example, for production of PU leather,
Polypropylene having a thickness of 20 to 50 as a release layer on the base paper
Release paper formed by laminating about μm is used.
In addition, for the production of semi-synthetic leather or PVC leather, a methylpentene resin having a thickness of 20-
An acrylic resin having a thickness of 20 to 120 μm as a release layer on release paper or base paper formed by laminating about 50 μm.
Release paper formed by laminating to the extent is used. Further, a release paper obtained by laminating a silicone resin as a release layer on a base paper is also used. Also, such release paper includes
Various irregular patterns are formed as required, and the surface of the synthetic leather is patterned by the irregularities.
【０００５】[0005]
【発明が解決しようとする課題】しかし、上記のような
離型紙を用いて合成皮革を製造した場合、離型紙の離型
性樹脂層に型付け加工が施されている場合でも、通常
は、合成皮革から離型紙を剥がす際、表皮層用合成樹脂
が離型紙の離型性樹脂層から明確に分離して剥がれるた
め、所謂ピーチスキン感などのような繊細な外観と触感
を合成皮革に付与することは困難であった。However, when synthetic leather is manufactured using the release paper as described above, even when the release resin layer of the release paper has been subjected to molding, the synthetic leather is usually used. When the release paper is peeled from the leather, the synthetic resin for the skin layer is clearly separated from the release resin layer of the release paper and peels off, so that the synthetic leather has a delicate appearance and touch such as a so-called peach skin feeling. It was difficult.
【０００６】この問題を解決するためには、離型紙の離
型性樹脂層の表面に微細な凹凸を、その凹凸面の表面粗
さ、および凹凸の間隔、凹凸の傾斜が特定の範囲に入る
ように形成する必要があり、また、このような微細な凹
凸を形成した離型紙を作製したとしても、その離型紙を
使用して合成皮革を繰り返し製造した場合、初回に製造
した合成皮革の表皮層用の樹脂が、離型紙の微細な凹凸
の凹部の底部に残留し、次に異なる色や薄い色の合成皮
革を続けて製造した場合、稀には前に製造した合成皮革
の表皮層の樹脂が、後から製造する合成皮革の表面に転
移して色調が損なわれる問題があった。In order to solve this problem, fine irregularities are formed on the surface of the release resin layer of the release paper, and the surface roughness of the irregularities, the interval between the irregularities, and the inclination of the irregularities fall within specific ranges. Also, even if release paper having such fine irregularities is formed, when synthetic leather is repeatedly manufactured using the release paper, the skin of the first synthetic leather is produced. If the resin for the layer remains on the bottom of the concave / convex recesses of the release paper, and then successively manufactures synthetic leather of a different color or lighter color, rarely the skin layer of the previously manufactured synthetic leather There has been a problem that the resin is transferred to the surface of the synthetic leather to be manufactured later and the color tone is impaired.
【０００７】本発明はこのような問題点を解決するため
になされたものであり、その目的とするところは、合成
皮革の製造に用いる離型紙であって、合成皮革の表皮層
の表面に、所謂ピーチスキン感に優れた外観と触感を付
与できると共に、異なる色や薄い色の合成皮革を続けて
製造しても、前に製造した合成皮革の色の影響を受ける
ことがなく、安全に繰り返し使用することのできる離型
紙と、それを用いて製造されたピーチスキン調の繊細な
外観と触感を備えた合成皮革を生産性よく提供すること
にある。The present invention has been made in order to solve such problems, and an object of the present invention is to provide a release paper for use in the production of synthetic leather. It can give an excellent appearance and touch to the so-called peach skin feeling, and can be safely repeated without being affected by the color of the previously manufactured synthetic leather, even if synthetic leather of different colors or light colors is manufactured continuously. It is an object of the present invention to provide a release paper that can be used and a synthetic leather having a delicate appearance and tactile sensation of peach skin produced using the release paper with high productivity.
【０００８】[0008]
【課題を解決するための手段】上記の課題は、以下の本
発明により解決することができる。即ち、請求項１に記
載した発明は、基材紙と該基材紙の少なくとも一方の面
に積層された離型性樹脂層とで形成される離型紙におい
て、該離型性樹脂層が、ポリプロピレン及び／又は４−
メチルペンテン−１系樹脂で形成され、該離型性樹脂層
の表面に微細な凹凸が、該凹凸の算術平均粗さ（Ｒａ）
が０．５〜１５μｍで、且つ、凹凸の平均間隔（Ｓｍ）
が０．５〜１０μｍ、凹凸の平均傾斜（θａ）が４５°
以上、９０°未満となるように設けられると共に、該微
細な凹凸面に透明な合成樹脂が塗工され、且つ、形成さ
れた透明な合成樹脂層が剥離されることにより、該凹凸
の凹部に入り込んだ透明な合成樹脂が、途中で破断され
該凹凸の凹部の底部に残存するように形成されているこ
とを特徴とする離型紙からなる。The above objects can be attained by the present invention described below. That is, the invention described in claim 1 is a release paper formed of a base paper and a release resin layer laminated on at least one surface of the base paper, wherein the release resin layer comprises: Polypropylene and / or 4-
It is formed of a methylpentene-1 resin, and fine irregularities are formed on the surface of the release resin layer, and arithmetic mean roughness (Ra) of the irregularities is obtained.
Is 0.5 to 15 μm, and the average interval of unevenness (Sm)
Is 0.5 to 10 μm, and the average inclination (θa) of the irregularities is 45 °
As described above, while being provided so as to be less than 90 °, a transparent synthetic resin is applied to the fine uneven surface, and the formed transparent synthetic resin layer is peeled off, so that the concave portion of the unevenness is formed. It is made of a release paper characterized in that the transparent synthetic resin that has entered is formed so as to be broken in the middle and to remain at the bottom of the concave portion of the unevenness.
【０００９】上記４−メチルペンテン−１系樹脂として
は、詳細は後で説明するが、４−メチルペンテン−１の
重合体もしくは４−メチルペンテン−１と他のα−オレ
フィンとの共重合体、または、これらに不飽和カルボン
酸もしくはその誘導体によりグラフト重合変性された変
性４−メチルペンテン−１重合体及び／又はポリエチレ
ン系樹脂を適宜の量でブレンドしたブレンド樹脂を使用
することができる。As the 4-methylpentene-1 resin, a polymer of 4-methylpentene-1 or a copolymer of 4-methylpentene-1 and another α-olefin will be described in detail later. Alternatively, a blended resin obtained by blending an appropriate amount of a modified 4-methylpentene-1 polymer and / or a polyethylene resin, which are graft-modified with an unsaturated carboxylic acid or a derivative thereof, may be used.
【００１０】また、本発明において、離型性樹脂層の表
面に設ける微細な凹凸の算術平均粗さ（Ｒａ）、及び凹
凸の平均間隔（Ｓｍ）は、ＪＩＳ Ｂ ０６０１−１９
９４「表面粗さ−定義及び表示」に基づいて測定した値
であり、その測定条件は下記によるものである。 （測定条件） 触針の先端半径：５μｍ 荷重：４ｍＮ カットオフ値：表１に記載されている標準値を選択す
る。 基準長さ：表２に記載されている標準値を選択する。 測定機器：表面粗さ測定装置Ｓｕｆｔｅｓｔ−２０１
〔（株）ミツトヨ製〕を使用。In the present invention, the arithmetic average roughness (Ra) of fine irregularities provided on the surface of the release resin layer and the average interval (Sm) of irregularities are JIS B 0601-19.
94 is a value measured based on "Surface roughness-definition and display", and the measurement conditions are as follows. (Measurement conditions) Tip radius of the stylus: 5 μm Load: 4 mN Cut-off value: Select a standard value described in Table 1. Reference length: Select a standard value described in Table 2. Measuring equipment: Surface roughness measuring device Softest-201
[Mitutoyo Corporation] used.
【００１１】[0011]
【表１】 [Table 1]
【００１２】[0012]
【表２】 [Table 2]
【００１３】前記離型性樹脂層のポリプロピレン及び／
又は４−メチルペンテン−１系樹脂は、ＰＶＣレザーや
ＰＵレザーなどの合成皮革の製造の際、良好な離型性と
耐熱性を有すると共に、その表面に微細な凹凸を設ける
際の型付け適性にも優れている。そして、前記離型性樹
脂層の表面には、微細な凹凸が、その算術平均粗さ（Ｒ
ａ）が０．５〜１５μｍで、凹凸の平均間隔（Ｓｍ）が
０．５〜１０μｍ、凹凸の平均傾斜（θａ）が４５°以
上、９０°未満となるように設けられており、このよう
な微細な凹凸面に、例えば、合成皮革の表皮層用樹脂な
どの透明な合成樹脂液を塗工すると、合成樹脂液はその
微細な凹凸の凹部まで入り込む。そして、加熱乾燥など
で皮膜形成させて透明な合成樹脂層を形成した後、これ
を剥離することにより、微細な凹凸の凹部に入り込んだ
透明な合成樹脂は、その凹部においては、その破断強度
よりも剥離時の抵抗力が大きくなるため、確実に途中で
破断されて凹部の底部にその一部が残存するようにな
る。[0013] The release resin layer of the polypropylene and /
Or, 4-methylpentene-1 resin has good releasability and heat resistance in the production of synthetic leather such as PVC leather and PU leather, and has good moldability when providing fine irregularities on its surface. Is also excellent. Then, fine irregularities are formed on the surface of the release resin layer by the arithmetic average roughness (R
a) is 0.5 to 15 μm, the average interval (Sm) of the unevenness is 0.5 to 10 μm, and the average inclination (θa) of the unevenness is 45 ° or more and less than 90 °. When a transparent synthetic resin liquid such as a resin for a skin layer of synthetic leather is applied to the fine and fine uneven surface, the synthetic resin liquid penetrates to the concave portions of the fine unevenness. Then, after forming a transparent synthetic resin layer by forming a film by heating and drying or the like, by peeling the transparent synthetic resin layer, the transparent synthetic resin that has entered the concave portions of the fine irregularities has a higher strength than the breaking strength in the concave portions. Also, since the resistance at the time of peeling is increased, it is surely broken in the middle and a part thereof remains at the bottom of the concave portion.
【００１４】この合成樹脂の破断面は、剥離した側も残
存する側も両者共、不規則で微細な凹凸形状となるた
め、剥離した側の合成樹脂層面は、全体が微細な凹凸を
有する形状となり、この表面形状が、ピーチスキンのよ
うな外観と触感を実現するのに好適な形状であり、これ
により合成皮革の表面に、ピーチスキン感、即ち、ピー
チスキンのような外観と触感が付与されるようになる。
また、剥離された離型紙側についても、全面に微細な凹
凸が設けられており、その凹凸の凹部の底部に破断され
た透明な合成樹脂が残存し、且つ、その破断面が不規則
で微細な凹凸形状となるため、この離型紙を用いて合成
皮革を製造することにより、その表皮層樹脂面全体に、
前記剥離した側の合成樹脂層面と同様な微細な凹凸が形
成され、これによりピーチスキン感、即ち、ピーチスキ
ンのような外観と触感が付与されるものである。The fracture surface of this synthetic resin has irregular and fine irregularities on both the peeled side and the remaining side, so that the synthetic resin layer surface on the peeled side has a shape having fine irregularities as a whole. This surface shape is a shape suitable for realizing the appearance and tactile sensation like peach skin, thereby giving the peach skin feeling, that is, the appearance and tactile sensation like peach skin to the surface of synthetic leather Will be done.
Also, on the release paper side where peeled, fine irregularities are provided on the entire surface, the transparent synthetic resin that has been broken remains at the bottom of the concave portions of the irregularities, and the fracture surface is irregular and fine. Because of the uneven shape, by manufacturing synthetic leather using this release paper, the entire surface of the skin layer resin surface,
Fine irregularities similar to those of the synthetic resin layer surface on the peeled side are formed, thereby giving a peach skin feeling, that is, an appearance and a tactile sensation like peach skin.
【００１５】従って、前記のような構成を採ることによ
り、良好な離型性と耐熱性を有し、且つ、合成皮革の表
皮層にピーチスキン感に優れた外観と触感を付与するこ
とができ、更に、前記微細な凹凸の凹部の底部には、予
め透明な合成樹脂を残存させているので、その離型紙を
用いて色調や濃度の異なる合成皮革を繰り返し製造した
場合、万一残存する合成樹脂が合成皮革側に移行したと
しても、透明であるため色調を損なうことがなく、安全
に繰り返し使用することのできる離型紙を生産性よく提
供することができる。Therefore, by adopting the above-described structure, it is possible to impart good releasability and heat resistance, and to give the skin layer of synthetic leather an appearance and a tactile sensation excellent in peach skin feeling. Furthermore, since the transparent synthetic resin is left in advance at the bottom of the concave portion of the fine unevenness, if synthetic leather having a different color tone or density is repeatedly manufactured using the release paper, the synthetic resin that remains will be left. Even if the resin migrates to the synthetic leather side, a release paper which can be safely and repeatedly used without being hindered in color tone because it is transparent can be provided with high productivity.
【００１６】尚、本発明において、離型紙の離型性樹脂
層表面の微細な凹凸の凹部の底部に残存させる透明な合
成樹脂は、無色透明であることが好ましいが、後で製造
する合成皮革の色よりも低い濃度の色であれば着色され
ていても構わない。前記透明とは、可視光線域の光の透
過率が８０％以上を指し、また、低い濃度とは、樹脂の
状態での透過濃度が低いこと、または、形成した合成樹
脂層の反射濃度が低いことを指す。透過濃度は、透過濃
度計〔例えば、マクベスＴＤ９０４（商品名）〕、反射
濃度は、反射濃度計〔マクベスＲＤ−１９シリーズ（商
品名）など〕で測定することができる。In the present invention, it is preferable that the transparent synthetic resin remaining at the bottom of the concave and convex portions on the surface of the release resin layer of the release paper is colorless and transparent. Any color may be used as long as the color has a lower density than the color. The term “transparent” means that the transmittance of light in the visible light region is 80% or more, and the term “low density” means that the transmission density in a resin state is low or the reflection density of the formed synthetic resin layer is low. Refers to The transmission density can be measured by a transmission densitometer [for example, Macbeth TD904 (trade name)], and the reflection density can be measured by a reflection densitometer [Macbeth RD-19 series (trade name) or the like].
【００１７】請求項２に記載した発明は、前記離型性樹
脂層の表面の微細な凹凸が、熱プレス方式で形成された
凹凸であることを特徴とする請求項１に記載の離型紙か
らなる。According to a second aspect of the present invention, the fine irregularities on the surface of the release resin layer are irregularities formed by a hot press method. Become.
【００１８】前記離型性樹脂層のポリプロピレン及び／
又は４−メチルペンテン−１系樹脂は、良好な離型性と
耐熱性を有すると共に、熱可塑性樹脂であるため、熱プ
レス方式でその表面に前記形状の微細な凹凸を容易に形
成することができる。熱プレス方式は、表面に前記微
細な凹凸を形成するための凹凸を設けた金型ロールとニ
ップロール（加圧ロール）を用いて、ロールプレス方式
で加熱、加圧して、基材紙と離型性樹脂層の積層体の離
型性樹脂層面に微細な凹凸を形成する方法、表面に前
記微細な凹凸を形成するための凹凸を設けた平板状の金
型と面盤を用いて、平面プレス方式で加熱、加圧して、
基材紙と離型性樹脂層の積層体の離型性樹脂層面に微細
な凹凸を形成する方法、Ｔダイなどの押し出しコート
装置を利用して、そのチルロール（冷却ロール）の表面
に前記微細な凹凸を形成可能な凹凸を設けておいて、こ
れを金型として、基材紙の表面に離型性樹脂を膜状に押
し出して、ニップロールで圧着し、積層と同時に微細な
凹凸を形成する方法などを採ることができ、いずれの方
法を用いてもよいが、特にのロールプレス方式、また
はの押し出しコート装置を利用する方法が、生産性に
一層優れる点で好ましい。[0018] The release resin layer of polypropylene and / or
Alternatively, 4-methylpentene-1 resin has good mold release properties and heat resistance, and is a thermoplastic resin, so that fine irregularities of the above-described shape can be easily formed on the surface thereof by a hot press method. it can. The hot press method uses a mold roll and a nip roll (pressing roll) provided with irregularities for forming the fine irregularities on the surface, and heats and presses with a roll press method to release from the base paper. Method of forming fine irregularities on the surface of the release resin layer of the laminate of the conductive resin layer, flat pressing using a flat mold and a face plate provided with irregularities for forming the fine irregularities on the surface. Heat and pressurize in the method,
A method for forming fine irregularities on the surface of the release resin layer of the laminate of the base paper and the release resin layer, and the use of an extrusion coater such as a T-die to apply the fine particles to the surface of the chill roll (cooling roll). By providing a concave / convex part capable of forming various irregularities, using this as a mold, a release resin is extruded in the form of a film on the surface of the base paper, and pressed with a nip roll to form fine irregularities simultaneously with lamination. A method such as a roll press method or a method using an extrusion coater is particularly preferable because productivity can be further improved.
【００１９】従って、前記のような構成を採ることによ
り、前記請求項１に記載した発明の作用効果に加えて、
熱プレス用の金型を精度よく作製することにより、離型
紙の離型性樹脂層への前記微細な凹凸の型付け加工を、
安定した品質で生産性よく行うことができるので、品質
に優れた離型紙を生産性よく提供することができる。Therefore, by adopting the above configuration, in addition to the operation and effect of the invention described in the first aspect,
By making a mold for hot pressing with high precision, the process of forming the fine irregularities on the release resin layer of release paper,
Since release can be performed with stable quality and high productivity, release paper having excellent quality can be provided with high productivity.
【００２０】請求項３に記載した発明は、前記請求項１
または２に記載の離型紙を用いて製造された合成皮革で
ある。According to the third aspect of the present invention, there is provided the first aspect of the present invention.
Or a synthetic leather manufactured using the release paper according to 2.
【００２１】このような構成を採ることにより、前記請
求項１または２に記載した発明の離型紙の離型性樹脂層
の表面に形成された適する形状の微細な凹凸を利用し
て、合成皮革の表皮層を形成できるので、ピーチスキン
調の繊細な外観と触感を備えた合成皮革を一層確実に生
産性よく提供することができる。[0021] By adopting such a configuration, synthetic leather can be formed by utilizing fine irregularities of a suitable shape formed on the surface of the release resin layer of the release paper according to the first or second aspect of the present invention. Thus, a synthetic leather having a delicate appearance and touch of peach skin tone can be more reliably provided with high productivity.
【００２２】[0022]
【発明の実施の形態】以下、本発明の実施の形態につい
て、図面を参照して説明する。図１は、本発明の離型紙
の一実施例の構成を示す模式断面図である。図２は、本
発明の離型紙の離型性樹脂層表面の微細な凹凸の凹部の
底部に、塗工された透明な合成樹脂の一部を残存させる
工程を説明する要部の模式断面図である。Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a schematic sectional view showing the configuration of one embodiment of the release paper of the present invention. FIG. 2 is a schematic cross-sectional view of a main part for explaining a step of leaving a part of the applied transparent synthetic resin at the bottom of the concave part having fine irregularities on the surface of the release resin layer of the release paper of the present invention. It is.
【００２３】図１に示した離型紙１０は、基材紙１の上
に離型性樹脂層２を積層すると共に、離型性樹脂層２の
表面全体に微細な凹凸３を設け、更に、その微細な凹凸
面に透明な合成樹脂が塗工され、且つ、形成された透明
な合成樹脂層４（図２参照）を剥離することにより、微
細な凹凸３の凹部に入り込んだ合成樹脂の一部が破断さ
れて、凹部の底部に透明な合成樹脂４′が残存するよう
に構成されている。そして、微細な凹凸３は、その凹凸
面の算術平均粗さ（Ｒａ）が０．５〜１５μｍで、凹凸
の平均間隔（Ｓｍ）が０．５〜１０μｍ、凹凸の平均傾
斜（θａ）が４５°以上、９０°未満となるように熱プ
レス方式などで形成されている。In the release paper 10 shown in FIG. 1, a release resin layer 2 is laminated on a base paper 1 and fine irregularities 3 are provided on the entire surface of the release resin layer 2. A transparent synthetic resin is applied to the fine uneven surface, and the formed transparent synthetic resin layer 4 (see FIG. 2) is peeled off, so that one of the synthetic resin entering the concave portion of the fine unevenness 3 is removed. The portion is broken so that the transparent synthetic resin 4 'remains at the bottom of the concave portion. The fine unevenness 3 has an arithmetic mean roughness (Ra) of the uneven surface of 0.5 to 15 μm, an average interval (Sm) of the unevenness of 0.5 to 10 μm, and an average inclination (θa) of the unevenness of 45 μm. It is formed by a hot press method or the like so as to be not less than 90 ° and less than 90 °.
【００２４】また、図２は、本発明の離型紙の離型性樹
脂層表面の微細な凹凸の凹部の底部に、塗工された透明
な合成樹脂の一部を残存させる工程を説明する要部の模
式断面図であり、この場合、基材紙１の上に離型性樹脂
層２を積層すると共に、離型性樹脂層２の表面全体に、
前記のような形状の微細な凹凸３を設けて離型紙の半製
品とし、更に、その離型性樹脂層表面の微細な凹凸面
に、透明な合成樹脂液を塗工し、加熱乾燥して透明な合
成樹脂層４を形成させた後、離型紙の半製品から透明な
合成樹脂層４を剥がすことにより、離型性樹脂層２の微
細な凹凸３の凹部の底部に、破断された透明な合成樹脂
４′を残存させる状況を示している。FIG. 2 is a view for explaining the step of leaving a part of the applied transparent synthetic resin at the bottom of the fine concave and convex portions on the surface of the release resin layer of the release paper of the present invention. FIG. 2 is a schematic cross-sectional view of a portion, in which a release resin layer 2 is laminated on a base paper 1 and the entire surface of the release resin layer 2 is
A semi-finished release paper is provided with the fine irregularities 3 having the above-described shape, and a transparent synthetic resin liquid is applied to the fine irregularities on the surface of the release resin layer, and then heated and dried. After the transparent synthetic resin layer 4 is formed, the transparent synthetic resin layer 4 is peeled from the semi-finished product of the release paper, so that the broken transparent bottom is formed on the bottom of the concave portion of the fine unevenness 3 of the release resin layer 2. This shows a situation in which the synthetic resin 4 'remains.
【００２５】即ち、離型性樹脂層表面の微細な凹凸面
に、透明な合成樹脂液を塗工することにより、合成樹脂
液はその微細な凹凸３の凹部にも入り込む。そして、加
熱乾燥などで皮膜形成させて透明な合成樹脂層４を形成
させた後、離型紙半製品から透明な合成樹脂層４を剥が
すことにより、微細な凹凸の凹部に入り込んだ合成樹脂
は、その凹部において、その破断強度よりも剥離時の抵
抗力が大きくなるため、途中で破断されて凹部の底部に
透明な合成樹脂４′が残存することになり、前記図１に
示した離型紙と同じ構成の離型紙１０が完成される。そ
して、残存した透明な合成樹脂４′の破断面は不規則で
且つ微細な凹凸形状となるため、離型性樹脂層２の表面
全体が大小微細な凹凸形状となり、これが合成皮革の表
面にピーチスキンのような外観と触感を付与するのに好
適な形状となる。従って、この離型紙を用いて合成皮革
を製造することにより、その表面にピーチスキン感、即
ち、ピーチスキンのような外観と触感を付与することが
できる。That is, by applying a transparent synthetic resin liquid to the fine uneven surface of the surface of the release resin layer, the synthetic resin liquid enters the concave portions of the fine unevenness 3. Then, after the transparent synthetic resin layer 4 is formed by forming a film by heating and drying or the like, the transparent synthetic resin layer 4 is peeled off from the semi-finished release paper, so that the synthetic resin that has entered the concave portions of the fine irregularities is In the concave portion, since the resistance at the time of peeling becomes larger than the breaking strength, it is broken on the way, and the transparent synthetic resin 4 'remains at the bottom of the concave portion, and the release paper shown in FIG. Release paper 10 having the same configuration is completed. The fracture surface of the remaining transparent synthetic resin 4 'is irregular and has fine irregularities, so that the entire surface of the release resin layer 2 has large and small irregularities, which are peaches on the surface of the synthetic leather. It has a shape suitable for providing skin-like appearance and touch. Therefore, by producing synthetic leather using this release paper, a peach skin feeling, that is, an appearance and a touch like peach skin can be imparted to the surface thereof.
【００２６】本発明の離型紙において、基材紙１には、
クラフト紙、上質紙、或いは、キャストコート紙などの
紙のほか、紙以外にも、ポリエチレンテレフタレート、
ポリエチレンナフタレートなどのポリエステル、各種ナ
イロンなどのポリアミド、ポリプロピレンなどのプラス
チックフィルム、合成紙、金属箔、織布、不織布などを
使用することができ、これらは単独、または適宜積層し
て使用することができる。基材紙１に離型性樹脂層２を
積層する際、その積層面には、必要に応じて、コロナ放
電処理、オゾン処理、火炎処理などの易接着性処理やプ
ライマーコートなどを施して基材紙１と離型性樹脂層２
の接着性を向上させることができる。In the release paper of the present invention, the base paper 1
Kraft paper, high-quality paper, or cast-coated paper, as well as paper, besides paper, polyethylene terephthalate,
Polyesters such as polyethylene naphthalate, polyamides such as various nylons, plastic films such as polypropylene, synthetic papers, metal foils, woven fabrics, non-woven fabrics and the like can be used, and these can be used alone or appropriately laminated. it can. When laminating the release resin layer 2 on the base paper 1, the laminating surface is subjected to a treatment such as corona discharge treatment, ozone treatment, flame treatment or the like for easy adhesion or primer coating, if necessary. Material paper 1 and release resin layer 2
Can be improved in adhesiveness.
【００２７】離型性樹脂層２には、ポリプロピレンまた
は４−メチルペンテン−１系樹脂、または両者をブレン
ドしたブレンド樹脂を用いることができる。４−メチル
ペンテン−１系樹脂としては、４−メチルペンテン−１
単独の重合体のほか、４−メチルペンテン−１と他のα
−オレフィン、例えばエチレン、プロピレン、ブテン−
１、ヘキセン−１、オクテン−１、デセン−１、テトラ
デセン−１、オクタデセン−１などの炭素数２〜２０の
α−オレフィンとの共重合体を用いることができ、特
に、４−メチルペンテン−１を９７重量％以上９８重量
％未満、α−オレフィンを２重量％以上３重量％未満含
む共重合体で、融点が２３６℃〜２３８℃、ＡＳＴＭ
Ｄ１２３８に準じて荷重５．０ｋｇ、温度２６０℃の条
件で測定したＭＦＲが１６０〜２００ｇ／１０min の範
囲のものが好ましい。The release resin layer 2 may be made of polypropylene or 4-methylpentene-1 resin, or a blend resin of both. As 4-methylpentene-1 resin, 4-methylpentene-1
In addition to a single polymer, 4-methylpentene-1 and other α
-Olefin, for example, ethylene, propylene, butene-
Copolymers with α-olefins having 2 to 20 carbon atoms such as 1, hexene-1, octene-1, decene-1, tetradecene-1, and octadecene-1 can be used. In particular, 4-methylpentene- 1 is a copolymer containing 97% by weight or more and less than 98% by weight and α-olefin of 2% by weight or more and less than 3% by weight, and has a melting point of 236 ° C. to 238 ° C .;
Those having an MFR in the range of 160 to 200 g / 10 min measured under the conditions of a load of 5.0 kg and a temperature of 260 ° C. according to D1238 are preferred.
【００２８】更に、４−メチルペンテン−１単独の重合
体、もしくは前記４−メチルペンテン−１と他のα−オ
レフィンとの共重合体９０重量部に対して、不飽和カル
ボン酸もしくはその誘導体によりグラフト重合変性され
た変性４−メチルペンテン−１系重合体、及び／又は密
度が０．９１０〜０．９３０ｇ／ｃｍ3 の範囲で、ＤＳ
Ｃ法で測定した融点が１００〜１１０℃の範囲で、且
つ、ＡＳＴＭ Ｄ１２３８に準じて荷重２．１６ｋｇ、
温度１９０℃の条件で測定したＭＦＲが１．０〜１００
ｇ／１０min の範囲にあるポリエチレン系樹脂を１０重
量部程度の割合でブレンドしたブレンド樹脂などを好適
に使用することができる。このようなブレンド樹脂を用
いることにより、良好な耐熱性と離型性とを維持し、且
つ、押し出しコートなどの加工適性を一層向上させるこ
とができる。Further, with respect to 90 parts by weight of a polymer of 4-methylpentene-1 alone or a copolymer of 4-methylpentene-1 and another α-olefin, an unsaturated carboxylic acid or a derivative thereof is used. A modified 4-methylpentene-1 polymer modified by graft polymerization, and / or a DS having a density in the range of 0.910 to 0.930 g / cm 3.
The melting point measured by the method C is in the range of 100 to 110 ° C., and the load is 2.16 kg according to ASTM D1238.
The MFR measured at a temperature of 190 ° C. is 1.0 to 100.
For example, a blended resin obtained by blending a polyethylene-based resin in the range of g / 10 min at a ratio of about 10 parts by weight can be suitably used. By using such a blend resin, good heat resistance and releasability can be maintained, and workability such as extrusion coating can be further improved.
【００２９】前記グラフト重合変性に用いる不飽和カル
ボン酸もしくはその誘導体としては、例えばマレイン
酸、フマール酸、テトラヒドロフタル酸、イタコン酸、
シトラコン酸、クロトン酸、イソクロトン酸、ナジック
酸、アクリル酸、メタクリル酸などの不飽和カルボン
酸、もしくは、その誘導体として、例えば、酸無水物、
イミド、アミド、エステルなどが挙げられ、具体的に
は、無水マレイン酸、無水シトラコン酸、マレイミド、
マレイン酸モノメチル、マレイン酸ジメチル、グリシジ
ルマレートなどが挙げられる。これらの中では、不飽和
のジカルボン酸またはその無水物が好適であり、特に、
マレイン酸、ナジック酸またはこれらの酸無水物がとり
わけ好適である。Examples of the unsaturated carboxylic acid or its derivative used for the graft polymerization modification include maleic acid, fumaric acid, tetrahydrophthalic acid, itaconic acid,
Citraconic acid, crotonic acid, isocrotonic acid, nadic acid, acrylic acid, unsaturated carboxylic acids such as methacrylic acid, or derivatives thereof, for example, acid anhydrides,
Imides, amides, esters and the like, specifically, maleic anhydride, citraconic anhydride, maleimide,
Monomethyl maleate, dimethyl maleate, glycidyl malate and the like can be mentioned. Among these, unsaturated dicarboxylic acids or anhydrides thereof are preferred, and in particular,
Maleic acid, nadic acid or anhydrides thereof are particularly preferred.
【００３０】このような離型性樹脂を基材紙１の上に積
層する方法は、例えばＴダイなどを用いる押し出しコ
ート法（単層、多層共押し出しのいずれも可）で基材紙
１に積層する方法、予め離型性樹脂をフィルム状に製
膜し、これをドライラミネーション法などで基材紙１に
貼り合わせる方法、離型性樹脂を溶液もしくはディス
パージョンなどの液状とし、ロールコート法、バーコー
ト法、ナイフコート法などの方法で基材紙１に塗工し、
皮膜形成させて積層する方法などを採ることができる。
只、生産性の点では、の押し出しコート法が最も優れ
ているので、単層または多層共押し出しなどの押し出し
コート法で積層することが好ましい。A method of laminating such a release resin on the base paper 1 is, for example, an extrusion coating method using a T-die or the like (both single-layer and multilayer co-extrusion are possible). A method of laminating, a method in which a release resin is formed into a film in advance, and this is bonded to the base paper 1 by a dry lamination method or the like, a method in which the release resin is made into a liquid state such as a solution or dispersion, and a roll coating method , Bar coating method, knife coating method, etc., to the base paper 1,
A method of forming a film and laminating the film may be employed.
However, in terms of productivity, the extrusion coating method is the best, so it is preferable to laminate by an extrusion coating method such as single-layer or multilayer co-extrusion.
【００３１】また、離型性樹脂層２は、前記のような樹
脂を用いて単独の層で形成してもよいが、例えば、多層
共押し出しコート法などを利用して２層、３層など多層
で形成することもできる。特に、離型性樹脂層２に４−
メチルペンテン−１系樹脂を用いる場合は、多層共押し
出しコート法を利用して、例えば２層構成で積層するこ
とにより、その加工適性を一層向上させることができ、
更に、加工時の温度条件や各層の厚みを調整すること
で、離型紙の幅方向のカールを抑制することも可能であ
る。また、離型性樹脂層２の表面への前記微細な凹凸３
の形成については、エンボス法など熱プレス方式で容易
に形成することができる。その内容については、既に請
求項２に記載した発明の項で説明したので、ここでは省
略する。The releasable resin layer 2 may be formed as a single layer using the above-mentioned resin. For example, two or three layers may be formed by using a multi-layer coextrusion coating method. It can also be formed in multiple layers. In particular, the release resin layer 2
When a methylpentene-1 resin is used, the workability can be further improved by using a multilayer co-extrusion coating method, for example, by laminating in a two-layer configuration,
Furthermore, by adjusting the temperature conditions during processing and the thickness of each layer, it is possible to suppress the curl in the width direction of the release paper. Further, the fine irregularities 3 on the surface of the release resin layer 2.
Can be easily formed by a hot press method such as an embossing method. The contents thereof have already been described in the section of the invention described in claim 2, so that the description is omitted here.
【００３２】また、離型性樹脂層２の表面に形成された
微細な凹凸３の凹部の底部に残存させる透明な合成樹脂
は、特に限定はされず、各種の合成樹脂を使用すること
ができる。只、透明性に関しては、先に説明した通りで
あり、無色透明であることが好ましいが、後で製造する
合成皮革の表皮層の色よりも低い濃度の色であれば着色
されていても構わない。例えば、ＰＶＣレザーやＰＵレ
ザーなどの合成皮革の表皮層に用いる樹脂組成物で、着
色剤を含有しない配合（着色剤以外の各種添加剤は含ん
でいてもよい）の樹脂組成物なども好適に使用すること
ができる。The transparent synthetic resin remaining at the bottom of the concave portion of the fine unevenness 3 formed on the surface of the release resin layer 2 is not particularly limited, and various synthetic resins can be used. . However, regarding the transparency, as described above, it is preferable that the color is transparent and colorless, but it may be colored as long as it has a lower density than the color of the skin layer of the synthetic leather manufactured later. Absent. For example, a resin composition used for a skin layer of a synthetic leather such as PVC leather or PU leather and containing no colorant (may contain various additives other than the colorant) may be suitably used. Can be used.
【００３３】以上のような本発明の離型紙を用いて合成
皮革を製造する方法は、公知のペーストコーティング法
や乾式法を利用することができ、例えば、離型紙１０の
離型性樹脂層２の微細な凹凸３の形成面に、合成皮革の
表皮層用の樹脂組成物液を、ナイフコート法、ロールコ
ート法、グラビアコート法などで塗工し、加熱乾燥して
表皮層の皮膜を形成させた後、その上にポリウレタン系
などの２液硬化型接着剤を塗工し、熱風乾燥などで溶剤
成分を除いた後、基布を貼り合わせて更に乾燥、熟成さ
せ、その後、離型紙を剥がす方法で、表面に微細な凹凸
が賦型され、ピーチスキン調の外観と触感を備えた合成
皮革を製造することができる。また、上記剥離した離型
紙は、同様な方法で繰り返し合成皮革の製造に使用する
ことができる。As a method for producing synthetic leather using the release paper of the present invention as described above, a known paste coating method or dry method can be used. For example, the release resin layer 2 of the release paper 10 can be used. A resin composition liquid for the skin layer of synthetic leather is coated on the surface on which the fine irregularities 3 are formed by a knife coating method, a roll coating method, a gravure coating method, etc., and dried by heating to form a skin layer film. After that, a two-part curable adhesive such as a polyurethane-based adhesive is applied thereon, and the solvent component is removed by hot-air drying, etc., followed by laminating the base cloth, further drying and aging, and then releasing the release paper. By the peeling method, fine unevenness is formed on the surface, and a synthetic leather having a peach skin-like appearance and a tactile sensation can be manufactured. The release paper thus peeled can be repeatedly used in the production of synthetic leather in the same manner.
【００３４】[0034]
（離型紙の作製）基材紙として、米坪１２５ｇ／ｍ2 の
ＡＫＤ紙〔紀州製紙（株）製〕を用い、その一方の面に
離型性樹脂層として、４−メチルペンテン−１系樹脂の
ＴＰＸＤＸ８２０とＤＸ８２０Ｍ〔いずれも三井化学
（株）製〕とを、共押し出しコート法でそれぞれの厚み
が１５μｍ、合計の厚みが３０μｍとなるように２層共
押し出しコートして積層し、その離型性樹脂層の表面全
体に熱エンボス方式で微細な凹凸を形成した。この微細
な凹凸面の算術平均粗さ（Ｒａ）は０．５８μｍ、凹凸
の平均間隔（Ｓｍ）は８μｍ、凹凸の平均傾斜（θａ）
は４８°である。(Preparation of release paper) AKD paper (manufactured by Kishu Paper Co., Ltd.) having a surface area of 125 g / m 2 was used as a base paper, and a 4-methylpentene-1 based resin layer was formed on one surface as a release resin layer Resin TPXDX820 and DX820M (both manufactured by Mitsui Chemicals, Inc.) were subjected to co-extrusion coating to form a two-layer coextrusion coat so that the total thickness was 15 μm and the total thickness was 30 μm. Fine irregularities were formed on the entire surface of the mold resin layer by a hot embossing method. The arithmetic mean roughness (Ra) of the fine uneven surface is 0.58 μm, the average interval (Sm) of the unevenness is 8 μm, and the average inclination of the unevenness (θa)
Is 48 °.
【００３５】次いで、上記微細な凹凸の凹部の底部に透
明な合成樹脂を残存させるため、微細な凹凸面に、ＰＶ
Ｃ樹脂（分子量１０００）を１００重量部、可塑剤（Ｄ
ＯＰ）を６０重量部、発泡剤を５重量部、安定剤を２．
５重量部の割合で配合したＰＶＣゾル組成物をナイフコ
ート法で乾燥時の塗工量が１５０ｇ／ｍ2 となるように
塗工し、１９０〜２００℃、２分の条件で加熱乾燥して
透明なＰＶＣ組成物の皮膜を形成させた後、その皮膜を
離型紙から剥がして、微細な凹凸の凹部の底部に、透明
なＰＶＣ組成物の一部が破断されて残存する実施例１の
離型紙を作製した。尚、上記透明なＰＶＣ組成物の皮膜
の可視光線域の光の透過率は８５〜９０％で、透過濃度
は０．０５（マクベス透過濃度計ＴＤ９０４で測定）で
あった。Next, in order to allow a transparent synthetic resin to remain at the bottom of the concave portion having the fine irregularities, a PV
100 parts by weight of a C resin (molecular weight: 1000) and a plasticizer (D
OP), 60 parts by weight, 5 parts by weight of a foaming agent, and 2. parts by weight of a stabilizer.
The PVC sol composition blended at a ratio of 5 parts by weight was applied by a knife coating method so that the coating amount at the time of drying was 150 g / m 2, and was heated and dried at 190 to 200 ° C. for 2 minutes. After forming a transparent PVC composition film, the film was peeled off from the release paper, and a part of the transparent PVC composition was broken and remained at the bottom of the fine concave / convex concave portions in Example 1 to leave. A pattern was prepared. The transparent PVC composition film had a light transmittance in the visible light range of 85 to 90% and a transmission density of 0.05 (measured with a Macbeth transmission densitometer TD904).
【００３６】（合成皮革の作製）前記実施例１の離型紙
を用いて合成皮革、この場合、ＰＶＣレザーを以下のよ
うに作製した。即ち、実施例１の離型紙の離型性樹脂層
の上に、ＰＶＣ（分子量１０００）を１００重量部、Ｄ
ＯＰを６０重量部、発泡剤を５重量部、安定剤を２．５
重量部、着色剤〔セイカセブンＮＥＴ−５１９４レッド
大日精化工業（株）製〕を５重量部の割合で混合して
なるＰＶＣレザー表皮層用のＰＶＣゾル組成物を、ナイ
フコート法で乾燥時の塗工量が１５０ｇ／ｍ2 となるよ
うに塗工し、１９０〜２００℃、２分の条件で加熱乾燥
した後、その上に接着剤を用いて基布を貼り合わせ、乾
燥、熟成後、離型紙を剥がして表面に微細な凹凸を有す
る実施例１の合成皮革（ＰＶＣレザー）を作製した。上
記実施例１のＰＶＣレザーの表面は良好なピーチスキン
感、即ち、ピーチスキン調の外観と触感を有していた。
尚、このＰＶＣレザーの表皮層のＰＶＣ組成物皮膜を途
中でサンプリングし、その可視光線域の光の透過率と透
過濃度を前記と同様に測定した結果は、光の透過率が５
０〜５５％で、透過濃度は０．８０であった。また、前
記実施例１の離型紙を用いて、繰り返し５回、上記の工
程で赤着色のＰＶＣレザーの製造を行ったところ、いず
れも問題なく良好なピーチスキン調の外観と触感を有す
るＰＶＣレザーを製造することができた。(Preparation of Synthetic Leather) Using the release paper of Example 1, synthetic leather, in this case, PVC leather, was prepared as follows. That is, 100 parts by weight of PVC (molecular weight: 1000) were added on the release resin layer of the release paper of Example 1 and D:
60 parts by weight of OP, 5 parts by weight of blowing agent, 2.5 parts of stabilizer
A PVC sol composition for a PVC leather skin layer, obtained by mixing 5 parts by weight of a coloring agent (Seika Seven NET-5194 Red, manufactured by Dainichi Seika Kogyo Co., Ltd.) at a ratio of 5 parts by weight, was dried by knife coating. coating weight is applied such that the 150 g / m 2 of, 190 to 200 ° C., was dried by heating at 2 minutes conditions, bonded to the base fabric with an adhesive thereon, drying, after aging Then, the release paper was peeled off to produce the synthetic leather (PVC leather) of Example 1 having fine irregularities on the surface. The surface of the PVC leather of Example 1 had a good peach skin feeling, that is, a peach skin-like appearance and touch.
In addition, the PVC composition film of the skin layer of this PVC leather was sampled on the way, and the transmittance and density of light in the visible light region were measured in the same manner as described above.
At 0-55%, the transmission density was 0.80. Further, using the release paper of Example 1 above, a red-colored PVC leather was produced in the above-described steps five times repeatedly. All of the PVC leather had a good peach skin tone appearance and touch without any problem. Could be manufactured.
【００３７】〔実施例２〕 （離型紙の作製）基材紙として、米坪１２５ｇ／ｍ2 の
ＡＫＤ紙〔紀州製紙（株）製〕を用い、その一方の面に
離型性樹脂層として、ポリプロピレン〔チッソ（株）
製〕を単層の押し出しコート法で厚みが３０μｍとなる
ように押し出しコートして積層し、その離型性樹脂層の
表面全体に熱エンボス方式で微細な凹凸を形成した。こ
の微細な凹凸面の算術平均粗さ（Ｒａ）は０．５９μｍ
で、凹凸の平均間隔（Ｓｍ）は８．５μｍ、凹凸の平均
傾斜（θａ）は４８°である。[Example 2] (Preparation of release paper) AKD paper (manufactured by Kishu Paper Co., Ltd.) of 125 g / m 2 in rice tsubo was used as a base paper, and a release resin layer was formed on one surface thereof. , Polypropylene [Chisso Corporation
Was extruded by a single-layer extrusion coating method so as to have a thickness of 30 μm, and laminated, and fine unevenness was formed on the entire surface of the release resin layer by a hot embossing method. The arithmetic average roughness (Ra) of this fine uneven surface is 0.59 μm
The average interval (Sm) of the irregularities is 8.5 μm, and the average inclination (θa) of the irregularities is 48 °.
【００３８】次いで、上記微細な凹凸の凹部の底部に透
明な合成樹脂を残存させるため、微細な凹凸面に、着色
剤を含まないＰＵレザーの表皮層用の樹脂組成物、即
ち、ポリウレタン組成物〔レザミンＮＥ−８８１１ 大
日精化工業（株）製〕を１００重量部、トルエンを２５
重量部、イソプロピルアルコール（以下、ＩＰＡ）を２
５重量部の割合で配合したポリウレタン組成物液を、ナ
イフコート法で乾燥時の塗工量が１５０ｇ／ｍ2 となる
ように塗工し、１００〜１２０℃、２分の条件で加熱乾
燥して透明なポリウレタン皮膜を形成させた後、その皮
膜を離型紙から剥がして、微細な凹凸の凹部の底部に透
明なポリウレタン組成物の一部が破断されて残存する実
施例２の離型紙を作製した。上記離型紙から剥がしたポ
リウレタン組成物の皮膜の可視光線域の光の透過率は８
５〜９０％で、透過濃度は０．０６（マクベス透過濃度
計 ＴＤ９０４で測定）であった。Next, in order to allow a transparent synthetic resin to remain at the bottom of the concave portions of the fine irregularities, a resin composition for a skin layer of PU leather containing no coloring agent, that is, a polyurethane composition, 100 parts by weight of [Rezamine NE-8811 manufactured by Dainichi Seika Kogyo Co., Ltd.] and 25 parts of toluene
Parts by weight, 2 parts by weight of isopropyl alcohol (hereinafter referred to as IPA)
The polyurethane composition liquid mixed at a ratio of 5 parts by weight was applied by a knife coating method so that the coating amount at the time of drying was 150 g / m 2, and was heated and dried at 100 to 120 ° C. for 2 minutes. After forming a transparent polyurethane film by peeling, the film is peeled off from the release paper, and a release paper of Example 2 is produced in which a part of the transparent polyurethane composition is broken at the bottom of the concave portion having fine irregularities and remains. did. The transmittance of light in the visible light range of the polyurethane composition film peeled off from the release paper is 8
At 5-90%, the transmission density was 0.06 (measured with a Macbeth transmission densitometer TD904).
【００３９】（合成皮革の作製）前記実施例２の離型紙
を用いて合成皮革、この場合はＰＵレザーを以下のよう
に作製した。即ち、実施例２の離型紙の離型性樹脂層の
上に、ポリウレタン組成物〔レザミンＮＥ−８８１１
大日精化工業（株）製〕を１００重量部、着色剤〔セイ
カセブンＮＥＴ−５７９４ブラック〕を１５重量部、ト
ルエンを２５重量部、ＩＰＡを２５重量部の割合で配合
したＰＵレザーの表皮層用のポリウレタン組成物液を、
ナイフコート法で乾燥時の塗工量が１５０ｇ／ｍ2 とな
るように塗工し、１００〜１２０℃、２分の条件で加熱
乾燥した後、その上に接着剤を用いて基布を貼り合わ
せ、乾燥、熟成後、離型紙を剥がして表面に微細な凹凸
を有する実施例２の合成皮革（ＰＵレザー）を作製し
た。上記実施例２のＰＵレザーの表面は良好なピーチス
キン感、即ち、ピーチスキン調の外観と触感を有してい
た。尚、このＰＵレザーの表皮層のポリウレタン組成物
皮膜を途中でサンプリングし、その可視光線域の光の透
過率と透過濃度を前記と同様に測定した結果は、光の透
過率が１０〜１５％で、透過濃度は０．９１であった。
また、前記実施例２の離型紙を用いて、繰り返し５回、
上記の工程で黒着色のＰＵレザーの製造を行ったとこ
ろ、いずれも問題なく良好なピーチスキン調の外観と触
感を有するＰＵレザーを製造することができた。(Preparation of Synthetic Leather) Using the release paper of Example 2, synthetic leather, in this case, PU leather, was prepared as follows. That is, a polyurethane composition [Resamine NE-8811] was formed on the release resin layer of the release paper of Example 2.
100 parts by weight of Dainippon Seika Kogyo Co., Ltd., 15 parts by weight of a coloring agent [Seika Seven NET-5794 Black], 25 parts by weight of toluene, and 25 parts by weight of IPA in a PU leather skin layer A polyurethane composition liquid for
Coating is performed by a knife coat method so that the coating amount at the time of drying is 150 g / m 2 , heated and dried at 100 to 120 ° C. for 2 minutes, and then a base cloth is adhered thereon using an adhesive. After being combined, dried and aged, the release paper was peeled off to produce the synthetic leather (PU leather) of Example 2 having fine irregularities on the surface. The surface of the PU leather of Example 2 had a good peach skin feeling, that is, a peach skin-like appearance and touch. In addition, the polyurethane composition film of the skin layer of this PU leather was sampled on the way, and the transmittance and density of light in the visible light region were measured in the same manner as described above. The result was that the transmittance of light was 10 to 15%. And the transmission density was 0.91.
Further, using the release paper of Example 2 repeatedly, five times,
When black colored PU leather was produced in the above steps, a PU leather having a good peach skin-like appearance and touch feeling could be produced without any problem.
【００４０】〔実施例３〕離型紙として、実施例１で作
製した離型紙をそのまま用いて、色の異なる合成皮革を
繰り返し作製することとし、最初に赤着色の合成皮革
（ＰＶＣレザー）を２回作製し、続いて黒着色の合成皮
革（ＰＶＣレザー）を３回、以下のように作製した。[Example 3] As the release paper, the release paper prepared in Example 1 was used as it was, and synthetic leathers of different colors were repeatedly produced. First, two red-colored synthetic leathers (PVC leather) were used. Then, black colored synthetic leather (PVC leather) was produced three times as follows.
【００４１】即ち、実施例１の離型紙の離型性樹脂層の
上に、ＰＶＣ（分子量１０００）を１００重量部、ＤＯ
Ｐを６０重量部、発泡剤を５重量部、安定剤を２．５重
量部、着色剤〔セイカセブンＮＥＴ−５１９４レッド
大日精化工業（株）製〕を１０重量部の割合で配合した
ＰＶＣレザー表皮層用のＰＶＣゾル組成物を、ナイフコ
ート法で乾燥時の塗工量が１５０ｇ／ｍ2 となるように
塗工し、１９０〜２００℃、２分の条件で加熱乾燥した
後、その上に接着剤を用いて基布を貼り合わせ、乾燥、
熟成後、離型紙を剥がす方法で、表面が赤色で、且つ、
微細な凹凸を有する実施例３の合成皮革（ＰＶＣレザ
ー）を２回作製した。That is, on the release resin layer of the release paper of Example 1, 100 parts by weight of PVC (molecular weight: 1000)
P, 60 parts by weight, a foaming agent, 5 parts by weight, a stabilizer, 2.5 parts by weight, a colorant [Seika Seven NET-5194 Red]
A PVC sol composition for a PVC leather skin layer, containing 10 parts by weight of Dainichi Seika Kogyo Co., Ltd.], was applied by a knife coat method so that the coating amount when dried was 150 g / m 2. After heating and drying under the condition of 190 to 200 ° C. for 2 minutes, a base fabric is stuck thereon using an adhesive, and dried,
After aging, the release paper is peeled off, the surface is red, and
The synthetic leather (PVC leather) of Example 3 having fine irregularities was produced twice.
【００４２】上記ＰＶＣレザーの表皮層のＰＶＣ組成物
皮膜を途中でサンプリングし、その可視光線域の光の透
過率と透過濃度を測定した結果は、光の透過率が２０〜
２５％で、透過濃度が０．８５であった。上記実施例３
のＰＶＣレザーの表面は、１回目、２回目とも実施例１
のＰＶＣレザーの表面と同様な形状の微細な凹凸を有し
ており、良好なピーチスキン感を有していた。また、表
面の色調に関しても、均一な赤色で色むらもなく良好で
あった。The PVC composition film of the skin layer of the PVC leather was sampled on the way, and the transmittance and density of light in the visible light range were measured.
At 25%, the transmission density was 0.85. Example 3 above
The surface of the PVC leather of Example 1 was the first and second times
Had fine irregularities of the same shape as the surface of the PVC leather, and had a good peach skin feeling. In addition, the color tone of the surface was uniform red and good without color unevenness.
【００４３】前記使用後の離型紙を使用して、その離型
性樹脂層の上に、ＰＶＣ（分子量１０００）を１００重
量部、ＤＯＰを６０重量部、発泡剤を５重量部、安定剤
を２．５重量部、着色剤〔セイカセブンＮＥＴ−５７９
４ブラック 大日精化工業（株）製〕を１５重量部の割
合で配合したＰＶＣレザー表皮層用のＰＶＣゾル組成物
を、ナイフコート法で乾燥時の塗工量が１５０ｇ／ｍ2
となるように塗工し、１９０〜２００℃、２分の条件で
加熱乾燥した後、その上に接着剤を用いて基布を貼り合
わせ、乾燥、熟成後、離型紙を剥がす方法で、表面が黒
色で、且つ、微細な凹凸を有する実施例３の合成皮革
（ＰＶＣレザー）を３回繰り返し作製した。Using the used release paper, 100 parts by weight of PVC (molecular weight: 1000), 60 parts by weight of DOP, 5 parts by weight of a foaming agent, and a stabilizer were added on the release resin layer. 2.5 parts by weight, colorant [Seika Seven NET-579
4 Black, manufactured by Dainichi Seika Kogyo Co., Ltd.] in a weight ratio of 150 g / m 2 when dried by knife coating with a PVC sol composition for a PVC leather skin layer containing 15 parts by weight.
After drying by heating under the condition of 190 to 200 ° C for 2 minutes, a base cloth is stuck thereon using an adhesive, dried, aged, and then the release paper is peeled off. Were black, and the synthetic leather (PVC leather) of Example 3 having fine irregularities was repeatedly produced three times.
【００４４】上記ＰＶＣレザーの表皮層のＰＶＣ組成物
皮膜を途中でサンプリングし、その可視光線域の光の透
過率と透過濃度を同様に測定したところ、光の透過率が
１０〜１５％で、透過濃度が０．９１であった。上記実
施例３の黒着色のＰＶＣレザーの表面は、１回目〜３回
目とも実施例１のＰＶＣレザーの表面と同様な形状の微
細な凹凸を有しており、良好なピーチスキン感を有して
いた。また、表面の色調に関しても、均一な黒色で、先
に作製した赤色の合成皮革の樹脂の移行もなく良好であ
った。The PVC composition film of the skin layer of the PVC leather was sampled on the way, and the transmittance and density of light in the visible light range were measured in the same manner. The transmittance was 10 to 15%. The transmission density was 0.91. The surface of the black-colored PVC leather of Example 3 has fine irregularities of the same shape as the surface of the PVC leather of Example 1 in the first to third times, and has a good peach skin feeling. I was In addition, the color tone of the surface was uniform black, which was good without migration of the resin of the previously produced red synthetic leather.
【００４５】[0045]
【発明の効果】以上、詳しく説明したように、本発明に
よれば、合成皮革の製造に用いる離型紙であって、その
表面全体に、合成皮革の表面にピーチスキン調の外観と
触感を付与するのに適した形状の微細な凹凸を備えると
共に、その微細な凹凸の凹部の底部に透明な合成樹脂が
予め残存するように形成されているので、合成皮革の表
皮層の表面に良好なピーチスキン調の外観と触感を付与
できると同時に、同色の合成皮革はもとより、異なる色
の合成皮革を繰り返し製造した場合でも色移りが防止さ
れ、安全に繰り返し使用することのできる離型紙と、そ
れを用いて製造された良好なピーチスキン調の外観と触
感を備えた合成皮革とを生産性よく提供できる効果を奏
する。As described above in detail, according to the present invention, there is provided a release paper for use in the production of synthetic leather, which imparts a peach skin-like appearance and feel to the surface of the synthetic leather over the entire surface. The surface of the skin layer of synthetic leather has a good peach because it is provided with fine irregularities of a shape suitable for making, and a transparent synthetic resin is formed so as to remain beforehand at the bottom of the concave parts of the fine irregularities. A release paper that can give skin-like appearance and feel and at the same time prevents color transfer even when synthetic leather of different colors as well as synthetic leather of the same color is repeatedly manufactured, and can be used safely and repeatedly. The present invention has an effect of providing a synthetic leather having a good peach skin appearance and a tactile sensation produced by using the same with high productivity.
【図１】本発明の離型紙の一実施例の構成を示す模式断
面図である。FIG. 1 is a schematic sectional view showing the configuration of an embodiment of a release paper of the present invention.
【図２】本発明の離型紙の離型性樹脂層表面の微細な凹
凸の凹部の底部に、塗工された透明な合成樹脂の一部を
残存させる工程を説明する要部の模式断面図である。FIG. 2 is a schematic cross-sectional view of a main part illustrating a step of leaving a part of a coated transparent synthetic resin at a bottom of a concave part having fine irregularities on the surface of a release resin layer of a release paper of the present invention. It is.
１ 基材紙 ２ 離型性樹脂層 ３ 微細な凹凸 ４ 透明な合成樹脂層 ４′透明な合成樹脂 １０ 離型紙 DESCRIPTION OF SYMBOLS 1 Base paper 2 Release resin layer 3 Fine unevenness 4 Transparent synthetic resin layer 4'Transparent synthetic resin 10 Release paper
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ テーマコート゛(参考） Ｂ２９Ｋ 105:20 Ｂ２９Ｋ 105:20 Ｂ２９Ｌ 7:00 Ｂ２９Ｌ 7:00 9:00 9:00 31:00 31:00 Ｆターム(参考） 4F055 AA01 DA02 DA12 FA08 FA15 GA13 4F100 AK01B AK07B AK08B AK51B BA02 BA10A BA10B CC00B DD07B DG10A EJ39 GB90 JK15B JL14B JN01B YY00B 4F209 AA11 AA12 AC03 AD06 AD08 AG01 AG03 AG05 AH81 PA01 PB02 PC08 ──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. 7 Identification code FI Theme coat ゛ (Reference) B29K 105: 20 B29K 105: 20 B29L 7:00 B29L 7:00 9:00 9:00 31:00 31: 00 F term (reference) 4F055 AA01 DA02 DA12 FA08 FA15 GA13 4F100 AK01B AK07B AK08B AK51B BA02 BA10A BA10B CC00B DD07B DG10A EJ39 GB90 JK15B JL14B JN01B YY00B 4F209 AA11 A03 AG01 A08 AG03 A
Claims (3)
積層された離型性樹脂層とで形成される離型紙におい
て、該離型性樹脂層が、ポリプロピレン及び／又は４−
メチルペンテン−１系樹脂で形成され、該離型性樹脂層
の表面に微細な凹凸が、該凹凸の算術平均粗さ（Ｒａ）
が０．５〜１５μｍで、且つ、凹凸の平均間隔（Ｓｍ）
が０．５〜１０μｍ、凹凸の平均傾斜（θａ）が４５°
以上、９０°未満となるように設けられると共に、該微
細な凹凸面に透明な合成樹脂が塗工され、且つ、形成さ
れた透明な合成樹脂層が剥離されることにより、該凹凸
の凹部に入り込んだ透明な合成樹脂が、途中で破断され
該凹凸の凹部の底部に残存するように形成されているこ
とを特徴とする離型紙。1. A release paper formed of a base paper and a release resin layer laminated on at least one surface of the base paper, wherein the release resin layer is formed of polypropylene and / or 4-
It is formed of a methylpentene-1 resin, and fine irregularities are formed on the surface of the release resin layer, and arithmetic mean roughness (Ra) of the irregularities is obtained.
Is 0.5 to 15 μm, and the average interval of unevenness (Sm)
Is 0.5 to 10 μm, and the average inclination (θa) of the irregularities is 45 °
As described above, while being provided so as to be less than 90 °, a transparent synthetic resin is applied to the fine uneven surface, and the formed transparent synthetic resin layer is peeled off, so that the concave portion of the unevenness is formed. A release paper characterized in that the transparent synthetic resin that has entered is formed so as to be broken midway and to remain at the bottom of the concave portion of the unevenness.
熱プレス方式で形成された凹凸であることを特徴とする
請求項１記載の離型紙。2. The method according to claim 1, wherein the fine irregularities on the surface of the release resin layer are
2. The release paper according to claim 1, wherein the release paper has irregularities formed by a hot press method.
いて製造された合成皮革。3. A synthetic leather produced using the release paper according to claim 1 or 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000350566A JP4580541B2 (en) | 2000-11-17 | 2000-11-17 | Release paper and synthetic leather produced using it |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000350566A JP4580541B2 (en) | 2000-11-17 | 2000-11-17 | Release paper and synthetic leather produced using it |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2002155476A true JP2002155476A (en) | 2002-05-31 |
| JP4580541B2 JP4580541B2 (en) | 2010-11-17 |
Family
ID=18823770
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000350566A Expired - Fee Related JP4580541B2 (en) | 2000-11-17 | 2000-11-17 | Release paper and synthetic leather produced using it |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP4580541B2 (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003127284A (en) * | 2001-10-19 | 2003-05-08 | Mitsui Chemicals Inc | Flexible synthetic leather release paper high in heat resistance |
| JP2003127258A (en) * | 2001-10-19 | 2003-05-08 | Dainippon Printing Co Ltd | Release sheet and synthetic leather manufactured by using the release sheet |
| WO2009038118A1 (en) * | 2007-09-21 | 2009-03-26 | Sekisui Chemical Co., Ltd. | Mold release film |
| US8336456B2 (en) | 2002-09-09 | 2012-12-25 | International Business Machines Corporation | Printing in a medium |
| WO2015136921A1 (en) * | 2014-03-12 | 2015-09-17 | セーレン株式会社 | Nubuck-toned sheet-like material and manufacturing method thereof |
| JP2017074775A (en) * | 2015-10-16 | 2017-04-20 | 三井化学株式会社 | Laminate and release paper |
| WO2019065758A1 (en) * | 2017-09-29 | 2019-04-04 | 共和レザー株式会社 | Synthetic resin skin material composite and method for manufacturing synthetic resin skin material composite |
| JP2019064121A (en) * | 2017-09-29 | 2019-04-25 | 大日本印刷株式会社 | Size enlargement sheet and manufacturing method of melamine decorative board using the size enlargement sheet |
| WO2020244455A1 (en) * | 2019-06-03 | 2020-12-10 | 贝内克-长顺汽车内饰材料（张家港）有限公司 | Skin layer composition and uniformly light-transmitting pvc artificial leather prepared therefrom |
| JP2021147741A (en) * | 2020-03-23 | 2021-09-27 | 共和レザー株式会社 | Skin material |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04314523A (en) * | 1991-04-15 | 1992-11-05 | Dainippon Printing Co Ltd | Shaping film |
| JPH05138736A (en) * | 1991-04-15 | 1993-06-08 | Dainippon Printing Co Ltd | Molded product having uneven surface |
| JP2000108268A (en) * | 1998-09-30 | 2000-04-18 | Nippon Polyolefin Kk | Process sheet and manufacture of the same |
-
2000
- 2000-11-17 JP JP2000350566A patent/JP4580541B2/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04314523A (en) * | 1991-04-15 | 1992-11-05 | Dainippon Printing Co Ltd | Shaping film |
| JPH05138736A (en) * | 1991-04-15 | 1993-06-08 | Dainippon Printing Co Ltd | Molded product having uneven surface |
| JP2000108268A (en) * | 1998-09-30 | 2000-04-18 | Nippon Polyolefin Kk | Process sheet and manufacture of the same |
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003127284A (en) * | 2001-10-19 | 2003-05-08 | Mitsui Chemicals Inc | Flexible synthetic leather release paper high in heat resistance |
| JP2003127258A (en) * | 2001-10-19 | 2003-05-08 | Dainippon Printing Co Ltd | Release sheet and synthetic leather manufactured by using the release sheet |
| US8336456B2 (en) | 2002-09-09 | 2012-12-25 | International Business Machines Corporation | Printing in a medium |
| US8453569B2 (en) | 2002-09-09 | 2013-06-04 | International Business Machines Corporation | Stamp with permeable hydrophylic matrix |
| WO2009038118A1 (en) * | 2007-09-21 | 2009-03-26 | Sekisui Chemical Co., Ltd. | Mold release film |
| JP2009090647A (en) * | 2007-09-21 | 2009-04-30 | Sekisui Chem Co Ltd | Mold release film |
| WO2015136921A1 (en) * | 2014-03-12 | 2015-09-17 | セーレン株式会社 | Nubuck-toned sheet-like material and manufacturing method thereof |
| JPWO2015136921A1 (en) * | 2014-03-12 | 2017-04-06 | セーレン株式会社 | Nubuck-like sheet and method for producing the same |
| JP2017074775A (en) * | 2015-10-16 | 2017-04-20 | 三井化学株式会社 | Laminate and release paper |
| WO2019065758A1 (en) * | 2017-09-29 | 2019-04-04 | 共和レザー株式会社 | Synthetic resin skin material composite and method for manufacturing synthetic resin skin material composite |
| JP2019064121A (en) * | 2017-09-29 | 2019-04-25 | 大日本印刷株式会社 | Size enlargement sheet and manufacturing method of melamine decorative board using the size enlargement sheet |
| JP6992378B2 (en) | 2017-09-29 | 2022-01-13 | 大日本印刷株式会社 | A shaping sheet and a method for manufacturing a melamine decorative board using the shaping sheet. |
| US11577487B2 (en) | 2017-09-29 | 2023-02-14 | Kyowa Leather Cloth Co., Ltd. | Synthetic resin skin material composite and method of producing synthetic resin skin material composite |
| WO2020244455A1 (en) * | 2019-06-03 | 2020-12-10 | 贝内克-长顺汽车内饰材料（张家港）有限公司 | Skin layer composition and uniformly light-transmitting pvc artificial leather prepared therefrom |
| JP2021147741A (en) * | 2020-03-23 | 2021-09-27 | 共和レザー株式会社 | Skin material |
| JP7506502B2 (en) | 2020-03-23 | 2024-06-26 | 共和レザー株式会社 | Skin material |
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|---|---|
| JP4580541B2 (en) | 2010-11-17 |
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