JPH06280199A - Base material for release paper - Google Patents
Base material for release paperInfo
- Publication number
- JPH06280199A JPH06280199A JP2607692A JP2607692A JPH06280199A JP H06280199 A JPH06280199 A JP H06280199A JP 2607692 A JP2607692 A JP 2607692A JP 2607692 A JP2607692 A JP 2607692A JP H06280199 A JPH06280199 A JP H06280199A
- Authority
- JP
- Japan
- Prior art keywords
- paper
- base material
- release paper
- release
- water
- 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.)
- Pending
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Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は剥離紙用基材に関し、特
に古紙として再生処理が可能な剥離紙用基材に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a release paper substrate, and more particularly to a release paper substrate that can be recycled as waste paper.
【０００２】[0002]
【従来技術】離型性に優れるシリコーン等の離型剤を紙
の表面に塗工し、硬化被膜を形成させた剥離紙は、粘着
シート等の粘着加工製品の分野で広く使用されている。
このような粘着紙等の台紙として使用される剥離紙用基
材には、粘着剤との離型性を良好にするために、塗工さ
れたシリコーン等の離型剤が紙層中に浸透することなく
紙の表面に滞留し、被膜を形成するという特性が要求さ
れる。2. Description of the Related Art A release paper having a cured film formed by coating a release agent such as silicone having excellent release property on the surface of paper is widely used in the field of adhesive processed products such as adhesive sheets.
In order to improve the releasability with the adhesive, the release paper base material used as the backing paper for such adhesive paper penetrates the paper layer with the coated release agent such as silicone. It is required to have the property of staying on the surface of the paper without forming a film and forming a film.
【０００３】そこで、従来、このような剥離紙用基材と
して、離型剤の紙層中への浸透がないか或いは少ないと
いう理由で、ポリエチレンラミネート紙やセミグラシン
紙等が使用されている。しかしながら、ポリエチレンラ
ミネート紙は、シリコーン等の離型剤の紙層中への浸透
が全くないため、剥離紙とした場合に剥離性が良好であ
るものの、ポリエチレンをラミネートしているために古
紙として回収した場合に離解（古紙回収性という）が困
難であり、資源としての再利用が困難であるばかりでな
く、ゴミとしての処理も困難となるという欠点があっ
た。Therefore, polyethylene laminated paper, semi-glassine paper, etc. have heretofore been used as such a release paper substrate because the release agent does not penetrate into the paper layer or has little penetration. However, polyethylene-laminated paper has a good release property when used as a release paper because it has no penetration of release agents such as silicone into the paper layer, but since it is laminated with polyethylene, it is recovered as waste paper. In this case, disaggregation (called recoverability of used paper) is difficult, and not only is it difficult to reuse it as a resource, but it is also difficult to treat it as garbage.
【０００４】また、セミグラシン紙は、離型剤の紙層中
への浸透を防止するために、Ｎ材パルプの配合を多くす
ると共にパルプの叩解を高度に行った紙の表面を、ポリ
ビニルアルコール（以下ＰＶＡという）等を主成分とす
る高分子溶液を用いてサイズプレス法或いはゲートロー
ルコーター法等の方法によって表面処理し、該表面の水
分が多い状態で、高温・高圧のカレンダー処理を行うこ
とにより製造される。従って、該紙は湿度変化に対する
寸法安定性に劣り、また、ポリエチレンラミネート紙に
比し、剥離性において劣るという欠点があった。Further, in semi-grasine paper, in order to prevent the release agent from penetrating into the paper layer, the content of N-material pulp is increased, and the surface of the paper which is highly beaten is treated with polyvinyl alcohol ( (Hereinafter, referred to as PVA) and the like, the surface treatment is performed by a method such as a size press method or a gate roll coater method using a polymer solution containing as a main component, and high temperature / high pressure calendering is performed in a state where the surface has a large amount of water. Manufactured by. Therefore, the paper has a drawback that it is inferior in dimensional stability against changes in humidity, and inferior in peelability as compared with polyethylene laminated paper.
【０００５】この場合、サイズプレス法やゲートロール
コーター法による表面処理では、ロールとニップ間で高
い圧力が生じるので、パルプの叩解を高度に行うことに
よって、ＰＶＡを主成分とする水溶性高分子溶液が紙層
中に浸透することを防止することが行われている。しか
しながら、このようにパルプの叩解を高度に行うことに
よって製造された剥離紙用基材は、寸法安定性が劣るの
みならず、シリコーン等の離型剤の塗布や粘着シートに
加工する際の加熱による収縮が大きくなるという欠点が
あった。In this case, in the surface treatment by the size press method or the gate roll coater method, since a high pressure is generated between the roll and the nip, the beating of the pulp is performed to a high degree, so that the water-soluble polymer containing PVA as a main component. It is practiced to prevent the solution from penetrating into the paper layer. However, the release paper substrate produced by performing beating of pulp at such a high degree is not only inferior in dimensional stability, but is also heated at the time of coating a release agent such as silicone or processing it into an adhesive sheet. There was a drawback that the shrinkage caused by the
【０００６】また、エアーナイフコーター法で表面処理
する場合には、紙層中への水溶性高分子溶液の浸透は少
ないものの、エアーナイフの風圧で塗工量をコントロー
ルすることができなくなるのを防止するために、塗工液
の濃度（通常３〜１０重量％）及び粘度（通常Ｂ型粘度
で１００ｃｐ以下）を低くする必要があるので、コータ
ーでの乾燥の負荷が増す上、乾燥に要する時間も増加
し、剥離基材の製造コストが上昇するという欠点があっ
た。Further, when the surface treatment is carried out by the air knife coater method, although the water-soluble polymer solution hardly permeates into the paper layer, the coating amount cannot be controlled by the air pressure of the air knife. In order to prevent it, it is necessary to lower the concentration (usually 3 to 10% by weight) and the viscosity (usually 100 cp or less in B-type viscosity) of the coating liquid, which increases the load of drying with a coater and requires drying. There is a drawback that the time also increases and the manufacturing cost of the release substrate increases.
【０００７】更に、ブレードコーター法で表面処理する
場合には、ブレードの刃先に生じる１０6 ｓｅｃ- 1 程
度の剪断速度下で、塗工液を高圧で押しつけることによ
り塗工するので、塗工効率には優れているものの、透気
度の低い紙に塗工する場合には、塗工液が紙層中に浸透
して紙表面に滞留せず、紙表面に被膜を形成させること
が困難であるという欠点があった。Further, when the surface treatment is carried out by the blade coater method, the coating is carried out by pressing the coating liquid at a high pressure under a shearing rate of about 10 6 sec -1 generated at the blade edge of the blade. However, when coating on paper with low air permeability, the coating liquid does not penetrate into the paper layer and stay on the paper surface, making it difficult to form a film on the paper surface. There was a drawback.
【０００８】また、ＰＶＡのような線状高分子はシリコ
ーン等の離型剤の浸透を良好に防止するので、表面処理
剤としては好ましいが、ＰＶＡの溶液は、一般に、高剪
断速度下での粘度が高く異常流動を起こすので、ブレー
ドコーター法はＰＶＡの溶液の塗工には適さないという
欠点があった。A linear polymer such as PVA is preferable as a surface treatment agent because it can prevent penetration of a mold release agent such as silicone, but a solution of PVA is generally used at a high shear rate. The blade coater method has a drawback that it is not suitable for coating a solution of PVA because of its high viscosity and abnormal flow.
【０００９】更に、剥離紙用基材は、該基材表面にシリ
コーン等の離型剤を塗工した後、粘着剤を介して、使用
時に剥離される紙或いはフィルム等の表面基材と貼合し
て粘着シートや粘着テープを作製するために使用される
ので、剥離紙用基材と表面基材の寸法安定性に差がある
場合には、粘着シートや粘着テープとした場合にカール
やシワ等のトラブルが生じ易い。従って、剥離紙用基材
としては、湿度に対する寸法安定性の良いものが望まれ
る。Further, the base material for release paper is coated with a release agent such as silicone on the surface of the base material and then adhered to a surface base material such as paper or film to be released at the time of use via an adhesive. Since they are used together to produce adhesive sheets or tapes, if there is a difference in dimensional stability between the release paper substrate and the surface substrate, curling or Trouble such as wrinkles easily occurs. Therefore, as the base material for release paper, one having good dimensional stability against humidity is desired.
【００１０】[0010]
【発明が解決しようとする課題】そこで、本発明者等は
寸法安定性に優れると共に古紙としての再生が可能な剥
離紙用基材を開発すべく鋭意検討した結果、予め水溶性
高分子溶液で表面処理した特定の紙に、特定の水溶性高
分子を含有する塗工層を、ブレードコーター法を用いて
設けることにより良好な結果が得られるということを見
出し本発明に到達した。従って、本発明の目的は、古紙
回収性がある上寸法安定性及び剥離性に優れる剥離紙用
基材を提供することにある。The inventors of the present invention have diligently studied to develop a base material for release paper which is excellent in dimensional stability and can be recycled as waste paper. The inventors have found that good results can be obtained by forming a coating layer containing a specific water-soluble polymer on a specific surface-treated paper by using a blade coater method, and thus arrived at the present invention. Therefore, an object of the present invention is to provide a base material for release paper, which has recoverability of waste paper and is excellent in dimensional stability and releasability.
【００１１】[0011]
【課題を解決するための手段】本発明の上記の目的は、
少なくとも一方の面が予め水溶性高分子溶液で表面処理
されており、且つ、透気度が２０秒以上である原紙の、
該表面処理が施された少なくとも一方の面に塗工層を設
けてなる剥離紙用基材であって、前記塗工層が、ポリビ
ニルアルコールを５０重量％以上含有する水溶性高分子
の１０〜３０重量％溶液を、ブレードコーター法を用い
て２〜７ｇ／ｍ2 塗工してなる塗工層であることを特徴
とする剥離紙用基材によって達成された。The above objects of the present invention are as follows.
At least one surface of the base paper, which has been surface-treated with a water-soluble polymer solution in advance, and has an air permeability of 20 seconds or more,
A release paper substrate having a surface-treated coating layer on at least one surface, wherein the coating layer comprises 10 to 10% of a water-soluble polymer containing 50% by weight or more of polyvinyl alcohol. A 30% by weight solution was applied by using a blade coater method in an amount of 2 to 7 g / m < 2 >.
【００１２】本発明において、予め表面処理する際に使
用する上記水溶性高分子は、表面処理をした原紙の透気
度を向上させる観点からカルボキシメチルセルローズ
（以下ＣＭＣと略す）やＰＶＡが好ましく、これらの中
でも特にＣＭＣが好ましい。In the present invention, the above-mentioned water-soluble polymer to be used for the surface treatment in advance is preferably carboxymethyl cellulose (hereinafter abbreviated as CMC) or PVA from the viewpoint of improving the air permeability of the surface-treated base paper, Among these, CMC is particularly preferable.
【００１３】本発明で用いる水溶性高分子溶液の濃度は
特に限定されるものではなく、用いる表面処理方法に合
わせて、適宜の濃度の水溶液を使用することができる。
また、表面処理方法は、公知の表面処理方法の中から適
宜選択して行うことができるが、特に表面処理の作業効
率を向上させる観点から、サイズプレス法、ゲートロー
ルコーター法或いはシムサイザー法等の表面処理工程が
抄紙機の中に組み込まれている装置を用いて行うことが
好ましい。The concentration of the water-soluble polymer solution used in the present invention is not particularly limited, and an aqueous solution having an appropriate concentration can be used depending on the surface treatment method used.
Further, the surface treatment method can be appropriately selected from known surface treatment methods, and in particular, from the viewpoint of improving the work efficiency of the surface treatment, such as a size press method, a gate roll coater method or a shimsizer method. It is preferable to perform the surface treatment step using an apparatus incorporated in the paper machine.
【００１４】上記表面処理は、原紙の少なくとも一方の
表面に対して行う。本発明においては、以上のようにし
て表面処理した原紙の透気度が２０秒以上であることが
必要である。２０秒以下であると、後記する塗工工程
で、剥離紙用基材に適正な塗工層を設けることが困難と
なるので好ましくない。The surface treatment is performed on at least one surface of the base paper. In the present invention, the air permeability of the base paper surface-treated as described above needs to be 20 seconds or more. When it is 20 seconds or less, it becomes difficult to form an appropriate coating layer on the release paper substrate in the coating step described later, which is not preferable.
【００１５】本発明においては、離型剤の紙層中への浸
透を防止する観点から、上記表面処理をした少なくとも
一方の面に、水溶性高分子を含有する塗工層をブレード
コーター法を用いて設けることが必要である。塗工層中
の水溶性高分子は、基材の剥離性を良好にする観点か
ら、ＰＶＡを５０重量％以上含有していることが必要で
ある。In the present invention, from the viewpoint of preventing the release agent from penetrating into the paper layer, a coating layer containing a water-soluble polymer is formed on at least one surface of the surface treatment by the blade coater method. It is necessary to use it. The water-soluble polymer in the coating layer needs to contain 50% by weight or more of PVA from the viewpoint of improving the releasability of the substrate.
【００１６】本発明でＰＶＡと共に併用することのでき
る他の水溶性高分子としては、各種デンプン類、ＣＭ
Ｃ、アルギン酸ソーダ等を挙げることができる。本発明
においては、ポリアミド系樹脂、メラミン系樹脂、グリ
オキザール等の耐水化剤を、剥離紙用基材製造時のブロ
ッキングを防止する観点から、併用することが好まし
い。Other water-soluble polymers that can be used together with PVA in the present invention include various starches and CM.
C, sodium alginate, etc. can be mentioned. In the present invention, a waterproofing agent such as a polyamide resin, a melamine resin, or glyoxal is preferably used in combination from the viewpoint of preventing blocking during production of the release paper substrate.
【００１７】なお、基材の剥離性に影響しない範囲で消
泡剤を添加することもできる。塗工液は、ブレードコー
ター法による塗工を良好にする観点から、固形分の濃度
で１０〜３０重量％、キャピラリー粘度で１２０ｃｐ以
下及びＢ型粘度で５００ｃｐ以下となるように調製され
ることが好ましく、液塗工量は２〜７ｇ／ｍ2であるこ
とが好ましい。An antifoaming agent may be added within the range that does not affect the releasability of the substrate. The coating liquid may be prepared to have a solid content concentration of 10 to 30% by weight, a capillary viscosity of 120 cp or less, and a B-type viscosity of 500 cp or less from the viewpoint of improving coating by the blade coater method. The liquid coating amount is preferably 2 to 7 g / m 2 .
【００１８】２ｇ／ｍ2 以下とすると、ＰＶＡ等の水溶
性高分子被膜の形成が困難となってシリコーン等の離型
剤が紙層中に浸透し易くなるため、剥離紙とした場合の
離型性が低下する。また、７ｇ／ｍ2 以上とすると、浸
水伸度が増加し基材の寸法安定性が悪化する上、塗工層
を乾燥させるための熱エネルギーが増大し、基材の製造
コストが上昇するので好ましくない。本発明の剥離紙用
基材は、基材の寸法安定性を良好にする観点から、浸水
伸度を３．０％以下とすることが好ましく、特に２．５
％以下とすることが好ましい。If the amount is 2 g / m 2 or less, it becomes difficult to form a water-soluble polymer coating such as PVA, and the release agent such as silicone easily penetrates into the paper layer. The moldability decreases. Further, when it is 7 g / m 2 or more, the water immersion elongation increases, the dimensional stability of the base material deteriorates, the thermal energy for drying the coating layer increases, and the manufacturing cost of the base material increases. Not preferable. The release paper substrate of the present invention preferably has a water immersion elongation of 3.0% or less, particularly 2.5, from the viewpoint of improving the dimensional stability of the substrate.
% Or less is preferable.
【００１９】本発明で使用する紙は、剥離紙用基材の寸
法安定性を良好にする観点から、緩和な叩解を行ったパ
ルプ原料を使用した紙を使用することが好ましい。この
ような紙は、透気度が低いものであるが、前記表面処理
を行うことにより透気度を２０秒以上とすることができ
る。以上の如くして製造された本発明の剥離紙用基材の
塗工層表面に、公知の方法により離型剤を塗布すること
により、容易に剥離紙が得られる。As the paper used in the present invention, from the viewpoint of improving the dimensional stability of the base material for release paper, it is preferable to use the paper using the pulp raw material subjected to mild beating. Although such paper has low air permeability, the air permeability can be set to 20 seconds or more by performing the surface treatment. A release paper can be easily obtained by applying a release agent to the surface of the coating layer of the release paper substrate of the present invention produced as described above by a known method.
【００２０】[0020]
【発明の効果】本発明の剥離紙用基材は、透気度の低い
紙を予め水溶性高分子溶液で表面処理することにより透
気度を高め、該表面に、ブレードコーター法を用いてＰ
ＶＡを含有する塗工層を設けているので、従来のポリエ
チレンラミネート紙に比べ古紙回収性に優れると共に、
セミグラシン紙に比較して寸法安定性に優れる上、剥離
紙とした場合の剥離性は、ポリエチレンラミネート紙と
略同程度である。また、塗工効率の優れたブレードコー
ター法を用いて水溶性高分子溶液を塗工することができ
るので基材の製造コストも安価である。EFFECT OF THE INVENTION The base material for release paper of the present invention has a high air permeability by preliminarily surface-treating a paper having a low air permeability with a water-soluble polymer solution, and using a blade coater method on the surface. P
Since a coating layer containing VA is provided, it is superior in recovering waste paper compared to conventional polyethylene laminated paper, and
The dimensional stability is superior to that of semi-glassine paper, and the peelability of the release paper is about the same as that of polyethylene laminated paper. Further, since the water-soluble polymer solution can be applied by using the blade coater method, which is excellent in coating efficiency, the manufacturing cost of the substrate is low.
【００２１】[0021]
【実施例】以下本発明を、実施例に従って更に詳述する
が、本発明はこれによって限定されるものではない。
尚、含有率を示す「％」は固形分の「重量％」、添加量
を示す「部」は「重量部」を示す。EXAMPLES The present invention will be described in more detail below with reference to Examples, but the present invention is not limited thereto.
In addition, "%" showing a content rate shows "weight%" of solid content, and "part" showing an addition amount shows "weight part."
【００２２】実施例１．Ｎ−ＢＫＰ２０％、Ｌ−ＢＫＰ
８０％を含有するパルプ原料を４６０ｍｌＣＳＦまで叩
解し、パルプ原料の量に対し、ロジンサイズ剤０．５％
及び硫酸バンド１．７％を添加した後、抄紙機のサイズ
プレス部で、ＣＭＣ（Ａ０１ＭＣ−ＤＳ：山陽国策パル
プ株式会社製の商品名）１．０％と酸化デンプン（Ｓ−
７００：味の素株式会社製の商品名）６．０％の混合水
溶液を用いて表面サイズを行い、坪量７８ｇ／ｍ2 の原
紙を抄造した。Example 1. N-BKP 20%, L-BKP
Pulp raw material containing 80% was beaten to 460 ml CSF, and 0.5% of rosin sizing agent was added to the amount of pulp raw material.
After adding 1.7% of sulfuric acid band and 1.0% of CMC (A01MC-DS: trade name of Sanyo Kokusaku Pulp Co., Ltd.) and oxidized starch (S-
700: trade name manufactured by Ajinomoto Co., Inc.) Surface sizing was performed using a 6.0% mixed aqueous solution to produce a base paper having a basis weight of 78 g / m 2 .
【００２３】得られた原紙の透気度をＪＩＳＰ８１１７
に従って測定したところ２８秒であった。得られた原紙
の表面に、表１に示した塗工液Ｉを３．０ｇ／ｍ2 とな
るように塗工し、剥離紙用基材を得た。The air permeability of the obtained base paper was measured according to JIS P8117.
It was 28 seconds. The coating liquid I shown in Table 1 was coated on the surface of the obtained base paper at 3.0 g / m 2 to obtain a release paper substrate.
【表１】 得られた剥離紙用基材を用いて、下記の試験及び評価を
行ったところ、剥離性は１５ｇ／２０ｍｍと良好であ
り、浸水伸度は２．３％と低く、又離解可能であった。[Table 1] When the following tests and evaluations were performed using the obtained release paper substrate, the releasability was good at 15 g / 20 mm, the water immersion elongation was as low as 2.3%, and disaggregation was possible. .
【００２４】試験及び評価方法 （１）浸水伸度 Ｊ−ＴＡＰＰＩ紙パルプ試験法Ｎｏ２７−７８Ａに従っ
て行った。 Test and evaluation method (1) Water immersion elongation It was conducted according to J-TAPPI paper pulp test method No. 27-78A.
【００２５】（２）剥離性 剥離紙用基材の表面にシリコーン（ＫＳ−８３７：信越
化学株式会社製の商品名）を０．６ｇ／ｍ2 塗工して剥
離紙とし、その上に粘着剤（ＳＫダイン８０１Ｂ：綜研
化学株式会社製の商品名）を２５μｍの厚さに塗工した
後、表面基材（ＫＹＰシール６４ｇ／ｍ2 ：山陽国策パ
ルプ株式会社製の商品名）を貼合することにより粘着紙
を作製した。得られた粘着紙を幅２０ｍｍに断裁して試
験片とした。該試験片の表面基材を引き剥がし、角度１
８０°、剥離速度１ｍ／分の条件で剥がした時の剥離荷
重を測定し、剥離性を評価した。(2) Releasability Silicone (KS-837: trade name of Shin-Etsu Chemical Co., Ltd.) is coated at 0.6 g / m 2 on the surface of the base material for release paper to form release paper, and the release paper is adhered thereto. After coating the agent (SK Dyne 801B: product name of Soken Kagaku Co., Ltd.) to a thickness of 25 μm, a surface base material (KYP seal 64 g / m 2 : product name of Sanyo Kokusaku Pulp Co., Ltd.) is pasted By doing so, an adhesive paper was produced. The obtained adhesive paper was cut into a test piece having a width of 20 mm. Peel off the surface base material of the test piece, and angle 1.
The peeling load when peeled under the conditions of 80 ° and the peeling speed of 1 m / min was measured to evaluate the peeling property.
【００２６】（３）離解性（古紙回収性） 剥離紙用基材にシリコーンを塗工した剥離紙試験片１０
ｇを、ミキサー（日立ミキサーＶＡ−９５０：日立熱器
具株式会社製の商品名）に入れ、水２００ｍｌを加えて
９０分間攪拌した後、離解状態を目視によって観察し下
記基準で評価した。(3) Disaggregation property (waste paper recovery property) Release paper test piece 10 in which silicone is applied to a release paper substrate
g was put in a mixer (Hitachi Mixer VA-950: trade name manufactured by Hitachi Thermal Equipment Co., Ltd.), 200 ml of water was added and stirred for 90 minutes, and then the disaggregated state was visually observed and evaluated according to the following criteria.
【００２７】○：未離解物なし △：未離解物若干あ
り ×：未離解物多量にあり （４）塗工液のＢ型粘度 Ｂ型粘度計（東京計器株式会社製の商品名）を使用し
て、３０℃、６０回転／分の条件で測定した。○: No undissolved material △: Some undisaggregated material ×: Large amount of undisaggregated material (4) B-type viscosity of coating liquid B-type viscometer (trade name of Tokyo Keiki Co., Ltd.) was used Then, the measurement was performed under the conditions of 30 ° C. and 60 rotations / minute.
【００２８】（５）塗工液のキャピラリー粘度 キャピラリー粘度計（高圧・細管式粘度計ＨＶＡ−６Ｇ
型）を使用して、３０℃の条件で測定した。(5) Capillary viscosity of coating liquid Capillary viscometer (high pressure / capillary viscometer HVA-6G
Type) was used and the measurement was performed at 30 ° C.
【００２９】実施例２．実施例１で得た原紙に、表２に
示した塗工液IIを、ブレードコーターを用い、５．５ｇ
／ｍ2 となるように塗工して剥離紙用基材を得た。得ら
れた剥離紙用基材を用いて、実施例１と全く同様にして
試験及び評価を行ったところ、剥離性は２０ｇ／２０ｍ
ｍと良好であり、浸水伸度は２．３％と低く、又離解可
能であった。Example 2. 5.5 g of the coating liquid II shown in Table 2 was applied to the base paper obtained in Example 1 using a blade coater.
It was coated so as to be / m 2 to obtain a base material for release paper. Using the obtained release paper substrate, a test and an evaluation were conducted in the same manner as in Example 1, and the releasability was 20 g / 20 m.
m was good, the water immersion elongation was as low as 2.3%, and disaggregation was possible.
【表２】 [Table 2]
【００３０】実施例３．ＣＭＣ（Ａ０１ＭＣ−ＤＳ：山
陽国策パルプ株式会社製の商品名）１．０％と酸化デン
プン（Ｓ−７００：味の素株式会社製の商品名）６．０
％の混合水溶液に代え、ＣＭＣ（Ａ０１ＭＣ−ＤＳ：山
陽国策パルプ株式会社製の商品名）１．２％と酸化デン
プン（Ｓ−７００：味の素株式会社製の商品名）３．０
％の混合水溶液を使用した他は、実施例１と全く同様に
して原紙を抄造した。得られた原紙の透気度は４２秒で
あった。Example 3. CMC (A01MC-DS: product name of Sanyo Kokusaku Pulp Co., Ltd.) 1.0% and oxidized starch (S-700: product name of Ajinomoto Co., Inc.) 6.0
% CMC (A01MC-DS: product name of Sanyo Kokusaku Pulp Co., Ltd.) 1.2% and oxidized starch (S-700: product name of Ajinomoto Co., Inc.) 3.0
%, A base paper was made in the same manner as in Example 1 except that a mixed aqueous solution was used. The air permeability of the obtained base paper was 42 seconds.
【００３１】得られた原紙の表面に、表１で示した塗工
液Ｉを、ブレードコーターを用い、４．０ｇ／ｍ2 とな
るように塗工して剥離紙用基材を得た。得られた剥離紙
用基材を用い、実施例１と全く同様にして試験及び評価
を行ったところ、剥離性は１２ｇ／２０ｍｍと良好であ
り、浸水伸度は２．３％と低く、又離解可能であった。The coating solution I shown in Table 1 was applied to the surface of the obtained base paper using a blade coater to give a release paper base material of 4.0 g / m 2 . The obtained release paper substrate was tested and evaluated in exactly the same manner as in Example 1. As a result, the releasability was as good as 12 g / 20 mm and the water immersion elongation was as low as 2.3%. It was possible to disaggregate.
【００３２】実施例４．Ｎ−ＢＫＰ３０％、Ｌ−ＢＫＰ
７０％を含有するパルプ原料を５００ｍｌＣＳＦまで叩
解し、パルプ原料の量に対してロジンサイズ剤０．５％
及び硫酸バンド１．７％を添加した後、抄紙機のサイズ
プレス部で、ＣＭＣ（Ａ０１ＭＣ−ＤＳ：山陽国策パル
プ株式会社製の商品名）１．２％と酸化デンプン（Ｓ−
７００：味の素株式会社製の商品名）３．０％の混合水
溶液を用いて表面サイズを行い、坪量７５ｇ／ｍ2 の原
紙を抄造した。Example 4. N-BKP 30%, L-BKP
Pulp raw material containing 70% is beaten to 500 ml CSF, and 0.5% of rosin sizing agent is added to the amount of pulp raw material.
And 1.7% of sulfuric acid band were added, and then CMC (A01MC-DS: trade name of Sanyo Kokusaku Pulp Co., Ltd.) 1.2% and oxidized starch (S-
700: trade name manufactured by Ajinomoto Co., Inc.) Surface sizing was performed using a 3.0% mixed aqueous solution to produce a base paper having a basis weight of 75 g / m 2 .
【００３３】得られた原紙の透気度を測定したところ３
４秒であった。得られた原紙の表面に、表１に示した塗
工液Ｉを４．５ｇ／ｍ2 となるように塗工し、剥離紙用
基材を得た。得られた剥離紙用基材を用いて、前記試験
及び評価を行ったところ、剥離性は１３ｇ／２０ｍｍと
良好であり、浸水伸度は１．９％と低く又離解は可能で
あった。The air permeability of the obtained base paper was measured to be 3
It was 4 seconds. The surface of the obtained base paper was coated with the coating liquid I shown in Table 1 at 4.5 g / m 2 to obtain a base material for release paper. When the above test and evaluation were carried out using the obtained release paper substrate, the releasability was as good as 13 g / 20 mm, the water immersion elongation was as low as 1.9%, and disaggregation was possible.
【００３４】実施例５．実施例４で得た原紙に、表２に
示した塗工液IIを、ブレードコーターを用いて５．５ｇ
／ｍ2 となるように塗工し、剥離紙用基材を得た。得ら
れた剥離紙用基材を用い、実施例１と全く同様にして試
験及び評価を行ったところ、剥離性は２２ｇ／２０ｍｍ
と良好であり、浸水伸度は１．８％と低く、又離解可能
であった。Example 5. 5.5 g of the coating liquid II shown in Table 2 was applied to the base paper obtained in Example 4 using a blade coater.
/ M 2 was applied to obtain a release paper substrate. Using the obtained release paper substrate, a test and an evaluation were conducted in the same manner as in Example 1, and the releasability was 22 g / 20 mm.
The water immersion elongation was as low as 1.8% and disaggregation was possible.
【００３５】比較例１．ＣＭＣ（Ａ０１ＭＣ−ＤＳ：山
陽国策パルプ株式会社製の商品名）１％を使用しなかっ
た他は、実施例１と全く同様にして原紙を抄造したとこ
ろ、原紙の透気度は１２秒であった。次に、実施例１と
全く同様にして表１に示した塗工液Ｉを４．２ｇ／ｍ2
となるように塗工して剥離紙用基材を作製し、実施例１
と全く同様にして試験及び評価を行ったところ、浸水伸
度は２．３％と低く、また離解可能であったが、剥離性
は１４０ｇ／２０ｍｍと非常に重く、劣っており、剥離
紙用基材として使用することが不適当であった。Comparative Example 1. A base paper was made into paper in the same manner as in Example 1 except that 1% of CMC (A01MC-DS: trade name manufactured by Sanyo Kokusaku Pulp Co., Ltd.) was not used, and the air permeability of the base paper was 12 seconds. It was Next, in exactly the same manner as in Example 1, the coating liquid I shown in Table 1 was used in an amount of 4.2 g / m 2.
Example 1 in which a base material for release paper is prepared by coating so that
When tested and evaluated in exactly the same manner as above, the water immersion elongation was as low as 2.3% and it was possible to disintegrate, but the releasability was very heavy at 140 g / 20 mm and was inferior. It was unsuitable for use as a substrate.
【００３６】比較例２．ＣＭＣ（Ａ０１ＭＣ−ＤＳ：山
陽国策パルプ株式会社製の商品名）１．２％を使用しな
かった他は、実施例４と全く同様にして原紙を抄造した
ところ、原紙の透気度は８秒であった。次に、実施例４
と全く同様にして表１に示した塗工液Iを４．２ｇ／ｍ
2 となるように塗工して剥離紙用基材を作製し、実施例
１と全く同様にして試験及び評価を行ったところ、浸水
伸度は２．３％と低く、また離解可能であったが、剥離
性は２２０ｇ／２０ｍｍと非常に重く、劣っており、剥
離紙用基材として使用することが不適当であった。Comparative Example 2. A base paper was made into paper in the same manner as in Example 4 except that 1.2% of CMC (A01MC-DS: trade name of Sanyo Kokusaku Pulp Co., Ltd.) was not used, and the air permeability of the base paper was 8 seconds. Met. Next, Example 4
Coating liquid I shown in Table 1 in exactly the same manner as in 4.2 g / m 2.
A base material for release paper was prepared by coating so as to have a value of 2, and the test and evaluation were carried out in the same manner as in Example 1. As a result, the water immersion elongation was as low as 2.3%, and disaggregation was possible. However, the releasability was 220 g / 20 mm, which was very heavy and inferior, and it was unsuitable for use as a base material for release paper.
【００３７】比較例３．実施例１で得た原紙に、表３に
示した塗工液III をブレードコーターを用い３．０ｇ／
ｍ2 となるように塗工し、剥離紙用基材を得た。得られ
た剥離紙基材を用いて、実施例１と全く同様にして試験
及び評価を行ったところ、剥離性は１１０ｇ／２０ｍｍ
と高く、剥離紙用基材としては不適当であった。Comparative Example 3. Coating solution III shown in Table 3 was applied to the base paper obtained in Example 1 using a blade coater at 3.0 g /
Coating was performed so as to be m 2 , to obtain a base material for release paper. Using the obtained release paper base material, a test and an evaluation were performed in exactly the same manner as in Example 1, and the release property was 110 g / 20 mm.
It was unsuitable as a base material for release paper.
【表３】 [Table 3]
【００３８】比較例４．実施例１と全く同様にして浸水
伸度、剥離性及び離解性ついて、剥離紙用基材として市
販され使用されている坪量７５ｇ／ｍ2 のセミグラシン
紙を評価したところ、剥離性は２０ｇ／２０ｍｍと良好
であったものの、離解性は不十分であり、また浸水伸度
は３．８％と高く、粘着シートとした場合にカール等の
トラブルが発生する程であった。Comparative Example 4. The semi-grassin paper having a basis weight of 75 g / m 2 which is commercially available and used as a base material for release paper was evaluated for the water immersion elongation, the releasability and the disintegration property in exactly the same manner as in Example 1, and the releasability was 20 g / Although it was as good as 20 mm, the disintegration property was insufficient, and the water immersion elongation was as high as 3.8%, and problems such as curling occurred when used as an adhesive sheet.
【００３９】比較例５．実施例１と全く同様にして、浸
水伸度、剥離性及び離解性について、剥離紙用基材とし
て市販され使用されている坪量９０ｇ／ｍ2 のポリエチ
レンラミネート紙を評価したところ、剥離性は１２ｇ／
２０ｍｍと良好であったものの、離解不能であった。以
上の結果は、表４〜５にまとめた通りである。Comparative Example 5. When polyethylene laminate paper having a basis weight of 90 g / m 2 which is commercially available and used as a base material for release paper is evaluated for water immersion elongation, releasability and disintegration in exactly the same manner as in Example 1, the releasability is 12 g /
Although it was as good as 20 mm, disaggregation was impossible. The above results are summarized in Tables 4-5.
【００４０】[0040]
【表４】 [Table 4]
【００４１】[0041]
【表５】 [Table 5]
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.5 識別記号 庁内整理番号 ＦＩ 技術表示箇所 Ｄ２１Ｈ 19/20 23/34 7199−3Ｂ Ｄ２１Ｈ 1/02 Ｃ 7199−3Ｂ 1/34 Ｆ ─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. 5 Identification number Office reference number FI technical display location D21H 19/20 23/34 7199-3B D21H 1/02 C 7199-3B 1/34 F
Claims (3)
液で表面処理されており、且つ、透気度が２０秒以上で
ある原紙の、該表面処理が施された少なくとも一方の面
に塗工層を設けてなる剥離紙用基材であって、前記塗工
層が、ポリビニルアルコールを５０重量％以上含有する
水溶性高分子の１０〜３０重量％溶液を、ブレードコー
ター法を用いて２〜７ｇ／ｍ2 塗工してなることを特徴
とする剥離紙用基材。1. A base paper, at least one surface of which has been surface-treated with a water-soluble polymer solution in advance and whose air permeability is 20 seconds or more, is applied to at least one surface-treated surface thereof. A base material for release paper having a coating layer, wherein the coating layer comprises a 10 to 30% by weight solution of a water-soluble polymer containing 50% by weight or more of polyvinyl alcohol by a blade coater method. A base material for release paper, characterized by being coated at ˜7 g / m 2 .
シメチルセルローズを含有する水溶性高分子溶液である
ことを特徴とする請求項１に記載の剥離紙用基材。2. The base material for release paper according to claim 1, wherein the water-soluble polymer solution to be surface-treated is a water-soluble polymer solution containing carboxymethyl cellulose.
は２に記載の剥離紙用基材。3. The base material for release paper according to claim 1, which has a water immersion elongation of 3.0% or less.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2607692A JPH06280199A (en) | 1992-01-17 | 1992-01-17 | Base material for release paper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2607692A JPH06280199A (en) | 1992-01-17 | 1992-01-17 | Base material for release paper |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH06280199A true JPH06280199A (en) | 1994-10-04 |
Family
ID=12183561
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2607692A Pending JPH06280199A (en) | 1992-01-17 | 1992-01-17 | Base material for release paper |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH06280199A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000096475A (en) * | 1998-09-24 | 2000-04-04 | Voith Sulzer Papiertechnik Patent Gmbh | Method and device for improving shrink cloth profile |
| JP2016113731A (en) * | 2014-12-17 | 2016-06-23 | 日本製紙パピリア株式会社 | Base paper for release paper |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0317958A (en) * | 1989-06-14 | 1991-01-25 | Agency Of Ind Science & Technol | Air electrode material for solid electrolyte fuel cell and solid electrolyte fuel cell |
-
1992
- 1992-01-17 JP JP2607692A patent/JPH06280199A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0317958A (en) * | 1989-06-14 | 1991-01-25 | Agency Of Ind Science & Technol | Air electrode material for solid electrolyte fuel cell and solid electrolyte fuel cell |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000096475A (en) * | 1998-09-24 | 2000-04-04 | Voith Sulzer Papiertechnik Patent Gmbh | Method and device for improving shrink cloth profile |
| JP2016113731A (en) * | 2014-12-17 | 2016-06-23 | 日本製紙パピリア株式会社 | Base paper for release paper |
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