JP2009149038A - 押出樹脂シートの製造方法 - Google Patents
押出樹脂シートの製造方法 Download PDFInfo
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- JP2009149038A JP2009149038A JP2007331093A JP2007331093A JP2009149038A JP 2009149038 A JP2009149038 A JP 2009149038A JP 2007331093 A JP2007331093 A JP 2007331093A JP 2007331093 A JP2007331093 A JP 2007331093A JP 2009149038 A JP2009149038 A JP 2009149038A
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Abstract
【解決手段】ダイから押出されるシート状の溶融熱可塑性樹脂4を、第1ロールと金属ロール10(第2ロール)との間に挟み込み、金属ロール10に巻き掛けて成形する押出樹脂シートの製造方法であって、金属ロール10の両端部11,11の外周面には、外径がロール中央部12の外径よりも小さい段差13,13がそれぞれ形成されており、溶融熱可塑性樹脂4を第1ロールと金属ロール10との間に挟み込むときに、該樹脂を段差13と第1ロールとの間にも挟み込んで成形するようにした。
【選択図】図3
Description
(1)ダイから押出されるシート状の溶融熱可塑性樹脂を、第1ロールと第2ロールとの間に挟み込み、第2ロールに巻き掛けて成形する押出樹脂シートの製造方法であって、前記第2ロールの両端部の外周面には、外径がロール中央部の外径よりも小さい段差がそれぞれ形成されており、前記溶融熱可塑性樹脂を第1ロールと第2ロールとの間に挟み込むときに、該樹脂を前記段差と第1ロールとの間にも挟み込んで成形することを特徴とする押出樹脂シートの製造方法。
(2)前記熱可塑性樹脂がアクリル系樹脂である前記(1)記載の押出樹脂シートの製造方法。
(3)前記段差が25〜75μmである前記(1)または(2)記載の押出樹脂シートの製造方法。
(4)前記第1ロールが、外周部に金属製薄膜を備えた弾性ロールであり、前記第2ロールが、高剛性の金属ロールである前記(1)〜(3)のいずれかに記載の押出樹脂シートの製造方法。
(5)前記弾性ロールは、略円柱状の軸ロールと、この軸ロールの外周面を覆うように配置された円筒形の金属製薄膜と、前記軸ロールと金属製薄膜との間に封入された流体とを備えており、前記流体を温度制御することによって、前記弾性ロールが温度制御可能に構成されている前記(4)記載の押出樹脂シートの製造方法。
(6)押出樹脂シートの厚さが0.2mm以下である前記(1)〜(5)のいずれかに記載の押出樹脂シートの製造方法。
特に、本発明を、前記(2)のように割れやすいアクリル系樹脂シートや前記(6)のように厚さの薄いシートを製造するのに適用すると、本発明の有用性がより向上する。
ダイ3:Tダイ、リップ幅1500mm、リップ間隔1mm(日立造船(株)製)。
ロール:横型、面長1600mm、外径300mmφの冷却ロール2本。
図2,図3に示した構成をロール構成1とした。具体的には、第1ロールおよび第2ロールを以下のように構成した。
軸ロール7の外周面を覆うように金属製薄膜8を配置し、軸ロール7と金属製薄膜8との間に流体9を封入した金属弾性ロール6を第1ロールとした。軸ロール7、金属製薄膜8および流体9は、次の通りである。
軸ロール7:ステンレス鋼製
金属製薄膜8:厚さ2mmのステンレス鋼製の鏡面金属スリーブ
流体9:油であり、この油を温度制御することによって、金属弾性ロール6を温度制御可能にした。より具体的には、温度調節機のON−OFF制御により前記油を加熱、冷却して温度制御可能にし、軸ロール7と金属製薄膜8との間に循環させた。
両端部11,11の外周面に、段差13,13(傾斜面)が形成され、表面状態を鏡面にしたステンレス鋼製のスパイラルロールを高剛性の金属ロール10とし、これを第2ロールとした。
なお、段差13は、段差dを50μmにし、長さa1を金属ロール10の面長100%に対して0.3%(すなわち5mm)にした。また、金属弾性ロール6と金属ロール10との接触長さLは、5mmにした。
第1,第2ロールを、いずれも両端部に段差が形成されていない高剛性の金属ロール(表面状態を鏡面にしたステンレス鋼製のスパイラルロール)とした。
樹脂1:メタクリル酸メチル/アクリル酸メチル=96/4(重量比)の共重合体70重量%に下記参考例で得たアクリル系多層弾性体を30重量%含有させたアクリル系組成物。熱変形温度(Th)は100℃。
樹脂2:メタクリル酸メチル/アクリル酸メチル=94/6(重量比)の共重合体。熱変形温度(Th)は100℃。
(ゴム状重合体の製造)
特公昭55−27576号の実施例に記載の方法に準拠して、三層構造からなるアクリル系多層弾性体を製造した。具体的には、まず、内容積5Lのガラス製反応容器に、イオン交換水1700g、炭酸ナトリウム0.7g、過硫酸ナトリウム0.3gを仕込み、窒素気流下で撹拌後、ペレックスOT−P((株)花王製)4.46g、イオン交換水150g、メチルメタクリレート150g、アリルメタクリレート0.3gを仕込んだ後、75℃に昇温し150分間撹拌を続けた。
<押出樹脂シートの作製>
表1に示す種類の樹脂を押出機1にて溶融混練し、ダイ3に供給した。そして、ダイ3から押出された溶融熱可塑性樹脂4を、表1に示すロール構成の第1,第2ロール間に挟み込み、第2ロールに巻き掛けて成形し、引取りロールにより搬送ロール上を冷却しながら引取って表1に示す厚さの押出樹脂シートを得た。実施例1〜3では、溶融熱可塑性樹脂4を第1,第2ロール間に挟み込むときに、該樹脂を段差13と第1ロールとの間にも挟み込んで成形した。また、表1中の「第1ロール表面温度」および「第2ロール表面温度」は、いずれもロールの表面温度を実測した値である。
各押出樹脂シート(実施例1〜3および比較例1〜3)の成形状態を目視で確認した。なお、判定基準は以下のものを用いた。
○:問題なく成形できた
×:シート端部から破断した
3 ダイ
4 溶融熱可塑性樹脂
5 冷却ロール
6,30 金属弾性ロール
7,31 軸ロール
8,32 金属製薄膜
9 流体
10 金属ロール
11 端部
12 ロール中央部
13,21,26 段差
15 押出樹脂シート
16 シート端部
17 シート中央部
20,25 第2ロール
Claims (6)
- ダイから押出されるシート状の溶融熱可塑性樹脂を、第1ロールと第2ロールとの間に挟み込み、第2ロールに巻き掛けて成形する押出樹脂シートの製造方法であって、
前記第2ロールの両端部の外周面には、外径がロール中央部の外径よりも小さい段差がそれぞれ形成されており、
前記溶融熱可塑性樹脂を第1ロールと第2ロールとの間に挟み込むときに、該樹脂を前記段差と第1ロールとの間にも挟み込んで成形することを特徴とする押出樹脂シートの製造方法。 - 前記熱可塑性樹脂がアクリル系樹脂である請求項1記載の押出樹脂シートの製造方法。
- 前記段差が25〜75μmである請求項1または2記載の押出樹脂シートの製造方法。
- 前記第1ロールが、外周部に金属製薄膜を備えた弾性ロールであり、前記第2ロールが、高剛性の金属ロールである請求項1〜3のいずれかに記載の押出樹脂シートの製造方法。
- 前記弾性ロールは、略円柱状の軸ロールと、この軸ロールの外周面を覆うように配置された円筒形の金属製薄膜と、前記軸ロールと金属製薄膜との間に封入された流体とを備えており、
前記流体を温度制御することによって、前記弾性ロールが温度制御可能に構成されている請求項4記載の押出樹脂シートの製造方法。 - 押出樹脂シートの厚さが0.2mm以下である請求項1〜5のいずれかに記載の押出樹脂シートの製造方法。
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TW097148964A TWI454512B (zh) | 2007-12-21 | 2008-12-16 | 製造擠出樹脂板的方法 |
US12/338,757 US20090166917A1 (en) | 2007-12-21 | 2008-12-18 | Method for producing extruded resin sheet |
KR1020080128969A KR101506039B1 (ko) | 2007-12-21 | 2008-12-18 | 압출 수지 시트의 제조 방법 |
ITTO2008A000947A IT1392737B1 (it) | 2007-12-21 | 2008-12-18 | Procedimento per produrre un foglio di resina estruso. |
DE102008063911A DE102008063911A1 (de) | 2007-12-21 | 2008-12-19 | Verfahren zur Herstellung einer extrudierten Harzfolie |
CN2008101878658A CN101462353B (zh) | 2007-12-21 | 2008-12-22 | 生产挤出树脂板的方法 |
DE102009014055A DE102009014055A1 (de) | 2007-12-21 | 2009-03-20 | Verfahren zur Herstellung einer extrudierten Harzfolie |
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JP2015166467A (ja) * | 2015-05-01 | 2015-09-24 | 住友化学株式会社 | 保護膜付き樹脂板またはフィルムの製造方法 |
JP2021122971A (ja) * | 2020-02-03 | 2021-08-30 | 芝浦機械株式会社 | 延伸フィルム製造装置 |
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CN105555534B (zh) * | 2013-09-20 | 2017-12-08 | 理研科技株式会社 | 含聚(甲基)丙烯酰亚胺系树脂层的透明多层膜及其制造方法 |
CN104149312A (zh) * | 2014-08-08 | 2014-11-19 | 常州君华特种工程塑料制品有限公司 | 一种peek片材连续挤出的生产设备及工艺 |
KR102456263B1 (ko) * | 2021-11-29 | 2022-10-19 | 주식회사 골든포우 | 변부의 두께가 중앙부의 두께보다 상대적으로 두껍게 형성된 단면 구조를 갖는 차수시트 및 이의 제조 방법 |
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DE102009014055A1 (de) | 2009-09-24 |
DE102008063911A1 (de) | 2010-05-20 |
IT1392737B1 (it) | 2012-03-16 |
CN101462353B (zh) | 2013-03-27 |
KR20090068139A (ko) | 2009-06-25 |
US20090166917A1 (en) | 2009-07-02 |
JP5323349B2 (ja) | 2013-10-23 |
TW200932804A (en) | 2009-08-01 |
ITTO20080947A1 (it) | 2009-06-22 |
KR101506039B1 (ko) | 2015-03-25 |
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