JPS58142818A - Manufacture of polypropylene sheet - Google Patents

Manufacture of polypropylene sheet

Info

Publication number
JPS58142818A
JPS58142818A JP57024304A JP2430482A JPS58142818A JP S58142818 A JPS58142818 A JP S58142818A JP 57024304 A JP57024304 A JP 57024304A JP 2430482 A JP2430482 A JP 2430482A JP S58142818 A JPS58142818 A JP S58142818A
Authority
JP
Japan
Prior art keywords
polypropylene
sheet
temperature
polypropylene sheet
heat
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
Application number
JP57024304A
Other languages
Japanese (ja)
Other versions
JPS6311968B2 (en
Inventor
Junji Fujii
淳司 藤井
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Idemitsu Petrochemical Co Ltd
Original Assignee
Idemitsu Petrochemical Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Idemitsu Petrochemical Co Ltd filed Critical Idemitsu Petrochemical Co Ltd
Priority to JP57024304A priority Critical patent/JPS58142818A/en
Publication of JPS58142818A publication Critical patent/JPS58142818A/en
Publication of JPS6311968B2 publication Critical patent/JPS6311968B2/ja
Granted legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C71/00—After-treatment of articles without altering their shape; Apparatus therefor
    • B29C71/02—Thermal after-treatment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C71/00—After-treatment of articles without altering their shape; Apparatus therefor
    • B29C71/02—Thermal after-treatment
    • B29C2071/025—Quenching, i.e. rapid cooling of an object
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/07—Flat, e.g. panels
    • B29C48/08—Flat, e.g. panels flexible, e.g. films
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
    • B29C48/10—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels flexible, e.g. blown foils
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
    • B29K2023/10—Polymers of propylene
    • B29K2023/12—PP, i.e. polypropylene

Abstract

PURPOSE:To obtain an unorientated polypropylene sheet which can be used for thermal forming and is excellent at a transparence and a stiffness, by heat- treating at a specified temperature a sheet obtained by extruding a polypropylene in a molten state and quenching. CONSTITUTION:A polypropylene sheet obtained by extruding a polypropylene in a molten state and quenching is heat-treated at a temperature above 60 deg.C and below the melting point of the polypropylene. The polypropylene is extruded in the molten state by the molding method of a T-die extrusion-molding, an inflation extrusion-molding etc. and in this time a suitable resin temperature is 250-300 deg.C. When the resin temperature is below 250 deg.C, the transparence of the obtained polypropylene sheet is unfavorably lowered. When it exceeds 300 deg.C, the degradation of the polypropylene occurs, besides, the good sheet can not be obtained with a good moldability. A heat treatment is preferably done by a heat roll method for 1sec-60min.

Description

【発明の詳細な説明】 本発明紘プリプ買ピレンシートの製造方法に関し、詳し
くは無配向で熱成形に用いることができ、かつ透明性、
剛性にすぐれ九ポリプロピレンシー）ＯＩＩ造方法に関
する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for producing a pyrene sheet, which can be used for thermoforming without orientation, has transparency,
9. Polypropylene (9) OII manufacturing method with excellent rigidity.

従来、ポリプロピレンシー）は強度、耐熱性などにすぐ
れているところから、多くは真空成形、圧空成形などの
熱成形によって種々の形状に威Ｉ＃され先後、食品、医
薬品、化粧品などの包装材として用いられている。しか
しながら、通常ｔ）１９ブーピレンシートは透明性に劣
に、内容物を連部することができない九め、商品価値を
低下させるおそれがあ如、その利用が制限されていえ。Traditionally, polypropylene (polypropylene) has excellent strength and heat resistance, so it is often molded into various shapes by thermoforming such as vacuum forming and pressure forming, and later used as packaging materials for foods, medicines, cosmetics, etc. It is used. However, the t)19-bupylene sheet usually has poor transparency and cannot be used to connect the contents, which may reduce its commercial value, which limits its use.

そこでポリブーピレンシート０ａｌｉ嘴性を向上させる
手段としてポリプロピレンを溶融状態から冷却する間に
′延伸し九に、あるいは溶融状態から急冷してＳ丸シー
トを延伸するなどＯ方法が採られて−る。しかしながら
、反−これもの方法で得られたシートは分子配向してい
るえめ熱成形に用いることができないという別の欠点を
有してい友。し九がって、熱成形用の透明性の改良され
九〆リプロピレンシ一トを得る丸めには、溶融状態から
シートを製造するに際し、通常５０℃以下に急冷する方
法が行なわれている。しかしながら、この方法で得られ
たシートは剛性が低い欠点があって、そＯ用途が限定さ
れてお如、またその透明性についても満足できるもので
はなかつ丸。Therefore, as a means to improve the beakability of polypropylene sheets, O methods have been adopted, such as stretching polypropylene while cooling it from a molten state, or rapidly cooling it from a molten state and stretching an S round sheet. . However, the sheet obtained by this method has another disadvantage in that it cannot be used for thermoforming due to molecular orientation. Therefore, in order to obtain a polypropylene sheet with improved transparency for thermoforming, a method is generally used in which the sheet is rapidly cooled to 50° C. or lower when the sheet is produced from the molten state. However, the sheet obtained by this method has the disadvantage of low rigidity, which limits its uses, and its transparency is not satisfactory.

本発明はこれら従来の欠点を解消して、無配向であって
熱成形に用いることができ、かつ透明性、＃性にすぐれ
九ポリプロピレンシートの製造方法を提供することを目
的とするものである。The object of the present invention is to eliminate these conventional drawbacks and provide a method for producing a polypropylene sheet that is non-oriented, can be used for thermoforming, and has excellent transparency and # properties. .

本発明はポジプロピレンを溶融状態で押出した後急冷し
て得九ポリプロピレンシートを６０℃以上ボリプ關ピレ
ンの融点以下の温度で熱Ｊ６理することを特徴とするポ
リプロピレンシートの製造方法である。The present invention is a method for producing a polypropylene sheet, which comprises extruding positive propylene in a molten state and then rapidly cooling the resulting polypropylene sheet.

本発明において使用されるポリプロピレンとしては、結
晶性プロピレン単独重合体、ブーピレン８５モル憾以上
であるエチレン、ブテン−１、ペンテン−１，ｌ−メチ
ルペンテン−１等Ｏα−オレフィン０１種または２＠以
上とのランダムもしくはプロッタ共重合体あるいはこれ
らの混合物があげられる。また、会費によシシリカ、ジ
ベンジリデンソルビトール等のｉ＆核剤。The polypropylene used in the present invention includes crystalline propylene homopolymer, ethylene containing 85 moles or more of boopylene, Oα-olefin 01 or 2@ or more, such as butene-1, pentene-1, l-methylpentene-1, etc. and a random or plotter copolymer or a mixture thereof. In addition, membership fees include i&nuclear agents such as silica and dibenzylidene sorbitol.

安定剤、帯電防止剤１着色剤などを適宜配合してもよい
。なあ、ポリブーピレンとしてはメルトインデックス（
ＭＩ）がａ５〜２０　ｙ／１ｏ分のものが好ましい。Ｍ
Ｉがａ　ｓ　ｙ／１ｏ分未満のものでは押出機からの吐
出量が低下し、生産性に劣るばかにか得られるシー）０
＄１性が低いものとなｐ好ましくない。まえ、ＭＩが２
０？／１０分を超えるものは粘度が低い丸めにシート成
形が内銀となる。A stabilizer, an antistatic agent, a colorant, etc. may be added as appropriate. Hey, melt index (
MI) is preferably a5 to 20 y/1o. M
If I is less than a sy/1o minute, the amount of discharge from the extruder will decrease, resulting in poor productivity and poor yield.
It is undesirable that the $1 value is low. Before, MI is 2
0? / For those exceeding 10 minutes, the viscosity is low and the sheet is formed into a round shape.

ポジプロピレンは溶融状態で！ダイ押出成形。Positive propylene is in a molten state! Die extrusion.

インフレーシーン押出成形などの成形法によに押出され
るが、こ０ＩＩＯ−型温度は２５０〜５００℃が好適で
ある。樹脂温度が２５０℃未満であると得られるポリプ
ロピレンシートの？Ｓ明性が低下り。The mold is extruded by a molding method such as blown extrusion molding, and the temperature of the mold is preferably 250 to 500°C. What kind of polypropylene sheet is obtained when the resin temperature is less than 250℃? S brightness decreases.

好ましくない。また１００℃を超えるとポリプロピレン
の劣化が生じるばかりか、成形性よく良好なシートを得
ることができない。Undesirable. Moreover, if the temperature exceeds 100°C, not only will the polypropylene deteriorate, but also a good sheet with good moldability cannot be obtained.

溶融押出し後、急冷してポリプロピレンシートを慢る。After melt extrusion, it is rapidly cooled to form a polypropylene sheet.

この場合の急冷温度は５０℃以下、好ましくは５０℃以
下である。急冷温度が５０℃を超えていると得られるポ
リプロピレンシートが透明性に劣るものとなるので好ま
しくない。し九がって急冷条件としてはトータルヘイズ
が墨Ｏ弧以下（α２＋ｗシート）となるように選定する
ことが好ましい。急冷はロール法、水冷法あるいはこれ
らを併用する方法など既知の方法によって行なうことが
できる′。成形するポリプロピレンシー）Ｏ厚みはａ１
〜１■、好ましくはα２〜α５−である。The quenching temperature in this case is 50°C or less, preferably 50°C or less. If the quenching temperature exceeds 50°C, the resulting polypropylene sheet will have poor transparency, which is not preferable. Therefore, it is preferable to select the quenching conditions so that the total haze is equal to or less than the black O arc (α2+w sheet). The rapid cooling can be carried out by a known method such as a roll method, a water cooling method, or a combination of these methods. Polypropylene sheet to be molded) O thickness is a1
-1■, preferably α2 to α5-.

次いで、得られ九ポリプロピレンシートな熱処理するが
、処理温度は６０℃以上ボラプロピレンの融点以下であ
シ、好ましくは８０℃以上ポリプロピレンの融点以下で
ある。The resulting polypropylene sheet is then heat-treated at a temperature of 60° C. or higher and lower than the melting point of vorapropylene, preferably 80° C. or higher and lower than the melting point of polypropylene.

６０℃未満では剛性、透明性向上効果が低く、長い処理
時間を要し、また融点を超える熱処理は失透、変１ｓｅ
　尊−ルヘの付着などがおこるので望ましくない。まえ
、処理時間は１秒〜６０分である。熱Ｊ１６１１は緊張
下あるいは弛緩下において既知の方法によって行なうこ
とができる。たとえば加熱ロールを用いる加熱ロール法
Ｓ加熱板を用−る方法、加熱空気又は不活性ガスを用い
る方法、エチレンダリコール、ポリエチレングリコール
、ダリ竜すン等Ｏ加熱不活性液体を用いる方法、カーｌ
ンブラツタ２反応性官能基含有有機物等のポジプロピレ
ンに高＃１１に率を持つ物質を少量添加して高周波加熱
処理する方法などを挙げることができる。これらの方法
のなかでも熱皓理時間が短かく、シかも効率的な連続蛾
理が可能であること、シート成形と連続一体化が可能で
あるという点で加熱ロール法、加熱リール加熱′＃囲気
併用法によって熱処理することが好ましい。Below 60°C, the effect of improving rigidity and transparency is low and requires a long treatment time, and heat treatment above the melting point may cause devitrification, 1se
This is undesirable as it may cause dirt to adhere to the surface. First, the processing time is 1 second to 60 minutes. Heat J1611 can be performed by known methods under tension or relaxation. For example, a heating roll method using a heating roll, a method using a heating plate, a method using heated air or an inert gas, a method using a heating inert liquid such as ethylene dalycol, polyethylene glycol, or Dali Ryusun, and a method using a heating inert liquid such as ethylene dalycol, polyethylene glycol, or Dali Ryusu.
Examples include a method in which a small amount of a substance having a high #11 ratio is added to positive propylene, such as an organic substance containing a reactive functional group, and the mixture is subjected to high-frequency heat treatment. Among these methods, the heated roll method and the heated reel heating method have the advantage of short heating time, efficient continuous molding, and continuous integration with sheet forming. It is preferable to carry out the heat treatment using an ambient air method.

こＯように本尭明Ｏｙｊ法により得られたポツプ−ピレ
ンシートは熱処理によシ透明性が大巾に向上しえもので
ある。As described above, the transparency of the poppyrene sheet obtained by the Hon-Yaaki Oyj method can be greatly improved by heat treatment.

本発明によれば無配向であって熱成形に用いることがで
き、かつ透明性、剛性にすぐれえポリプロピレンシート
を得ることができる。さらに、儂械釣性質、耐鵬性、低
温耐衝撃性にもすぐれ、しかも表面状態が良好であって
、耐這渥性も向上したポリプロピレンシートを得ること
ができる。それ故、本発明Ｏ方法によって得られるが９
プロピレンシー）は文具部Ｏ或彫や食品、医薬品、化粧
品などの包装材として有効に利用することができる。According to the present invention, it is possible to obtain a polypropylene sheet that is non-oriented, can be used for thermoforming, and has excellent transparency and rigidity. Furthermore, it is possible to obtain a polypropylene sheet which is excellent in mechanical fishing properties, scratch resistance, and low-temperature impact resistance, has a good surface condition, and has improved scratch resistance. Therefore, although obtained by the method of the present invention, 9
Propyrency) can be effectively used as a packaging material for stationery, food, medicine, cosmetics, etc.

次に本発明を実施例により詳しく説明する。Next, the present invention will be explained in detail with reference to examples.

実施例１〜４ ポリプロピレン（密度ａ　９１　ｆＡｍ　ｅ　メルトイ
ンデックス１０　Ｐ／Ｉ　Ｍ）を樹脂温度２８０℃で！
−ダイ押出装置を用いてダイリップ一度ａ５〜１ａ腸で
チーダイより押出し九。押出されたシー）をエアーギャ
ップ１２０〜１５０■をもって２〜５℃に冷却され九本
ＯＩＩれるスリットを１１１ｅ／ｍ−〇速度で通して急
冷し、厚み（Ｌ２−のシー）を得え。このシートは無配
向てあって透明なもＯであつ九。Examples 1 to 4 Polypropylene (density a 91 fAm e melt index 10 P/IM) at a resin temperature of 280°C!
- Using a die extrusion device, extrude from the Qi die once with the die lip A5~1A. The extruded sheet is cooled to 2 to 5 DEG C. with an air gap of 120 to 150 mm and passed through nine OII slits at a speed of 111 e/m-0 to rapidly cool it to obtain a thickness (L2- sheet). This sheet is non-oriented and transparent.

次いで、このシートを１ｓ＃／朧１１の速度で同一ライ
ン上に所定温度に加熱された１０本のａ　＋、ル群によ
知加熱処理し、プリプロピレンシートを得た。８種測定
結果を館１表に示す。なお、ヘイズ（透明性のパラメー
ター）はＪＩ８−６７１４に準じて測定し、引張降伏強
度をよび引張弾性率はムＩＩ！ＭＫ４１＠１に準じて測
定した。Next, this sheet was subjected to heat treatment on the same line at a speed of 1 s#/Oboro 11 with 10 A+ and L groups heated to a predetermined temperature to obtain a polypropylene sheet. The results of the eight types of measurements are shown in Table 1. The haze (transparency parameter) was measured according to JI8-6714, and the tensile yield strength and tensile modulus were measured as MuII! Measured according to MK41@1.

比較例１ 実施例１におｉで、熱処理を行なわなかつ九こと以外は
実施例１に準じてポリプロピレンシートを成形しえ。シ
ー）０４ｒＩＩ＃定結釆を第１表に示す・ 実施例Ｓ 実施例１において、ランダムポリプロピレン（１１度ｆ
Ｌ　９０　ｆ／ｂｌ　、メルトインデックス７．０　）
／１０分、エチレダツプーピレンシーシをＳ九。得られ
たシートの各種測定結果を第１表に示す。Comparative Example 1 A polypropylene sheet was molded in the same manner as in Example 1 except that no heat treatment was performed and the same procedure was followed as in Example 1. Example S In Example 1, random polypropylene (11 degrees f
L 90 f/bl, melt index 7.0)
/ 10 minutes, Echire Datsupu Pirenshishi S9. Table 1 shows various measurement results of the obtained sheet.

比較例２ 実施例５において、熱処理を行なわなかったこと以外は
実施例５に準じて行ない、ポリプロピレンシートを得た
。得られたシートの各種測定結果を第１表に示す。Comparative Example 2 A polypropylene sheet was obtained in the same manner as in Example 5 except that the heat treatment was not performed. Table 1 shows various measurement results of the obtained sheet.

比較例３ 実施例１において、８０〜１２０℃に加熱され九鏡面ロ
ール上を通して冷却したことおよび熱処理を行なわなか
ったこと以外は実施例１に準じて行ない、ポリプロピレ
ンシートを得え、得られたシー）０各種測定結果を第１
表に示す。Comparative Example 3 A polypropylene sheet was obtained by following the same procedure as Example 1 except that it was heated to 80 to 120°C and cooled by passing it over nine mirror-surfaced rolls, and that no heat treatment was performed. ) 0 various measurement results first
Shown in the table.

比□較−例４ 実施例１において、８０〜１２０℃に加熱され九＃Ｉ１
面ロール上を通して冷却したこと以外ＩＩｉ與施例１に
準じて行ない、ポリプロピレンシートを得た。得られた
シートの各龜測定結果を第１表←示す。Comparison - Example 4 In Example 1, nine #I1 heated to 80-120°C
A polypropylene sheet was obtained in accordance with Example 1, except that it was cooled by passing it over a surface roll. Table 1 shows the measurement results for each head of the obtained sheet.

比較例５ 実施例１において、２０〜２８℃に冷却されえ鏡向■−
身上にエヤーナイフで吹きつけ九ことおよび熱４Ｉ！＆
理を行なわなかったこと以外は実施例１に準じて行ない
、ポリプロピレンシートをＳ＊、得られ九シー）の各種
測定結果を第１表に示す。Comparative Example 5 In Example 1, the mirror direction ■-
Spray it on your body with an air knife and get 4 I heat! &
The procedure was carried out in accordance with Example 1, except that the process was not carried out, and the results of various measurements of the polypropylene sheet (S*, 9 C) are shown in Table 1.

比較例４ 実施例１において、２０〜２８℃に冷却されえ鏡爾ロー
ル上にエヤーナイフで吹きつけたこと以外は実施例１に
準じて行ない、プリプロピレンシートをＳえ。得られえ
シー）の各種測定結果を第１１Ｉに示す。Comparative Example 4 A polypropylene sheet was prepared in the same manner as in Example 1 except that it was blown onto a roll cooled to 20 to 28° C. using an air knife. The various measurement results obtained are shown in Section 11I.

養許出−人　　出光石油化学株式金社 代場人　弁海士　久保田藤部 ｔ　事件Ｏ慶示 ４１１ｍ１１＠５７−４４１１１４ １、発明の名称 １９プ賞プレンシート０ＩＩＩＩ１１方法五　−正をす
る看 事件とＯ関係　　轡許田顧入 出光石餉化参株式金社 表代理人 〒１０４ 東駅都中央区京橋１丁目１査１０＠ 西励ビル５＃ 翫　補正Ｏ対車 明細書０４１許謔求０１ＮｅｌｌＯ−および発明の詳細
な説明Ｏ橢 （補正の内容 （１１特許請求の範囲を別紙の通シに訂正する。Licensed person: Idemitsu Petrochemical Co., Ltd. Kinsha Representative, Bento Mariner, Kubota Fujibe T Incident O Keishi 411m11 @ 57-441114 1. Name of the invention 19 Pre-Prize sheet 0III 11 Method 5 - Correct observation Incident and O relationship Representative of Idemitsu Sekihan Kasan Co., Ltd. 104 Higashi Station, Chuo-ku, Kyobashi 1-1-10 @ Nishiyu Building 5 # Amendment O Vehicle specification 041 Permission request 01 NellO Explanation (Contents of amendment) The scope of the 11th claim is amended in the attached notice.

（２）明細書第２頁最下行の「いるため」と「熱成形」
との間に「通常の」を加入する。(2) “Irutame” and “thermoforming” on the bottom line of page 2 of the specification
Add "normal" between.

（３）　　同第５頁１行目の「有していた。」と「し九
がって、」との間に次の文章を加入する。(3) Add the following sentence between "I had" and "I had," in the first line of page 5.

［このため、これらのシートの成形にあってはシートの
抗張力が高く、シたがって高い成形圧力を必要とするた
め、特別な成形設備を設けなければならず、その利用は
大きく制限されていた。」 （４）　　同第４頁下から４行目の「樹脂温度」を「ダ
イ温度」に訂正する。[For this reason, when forming these sheets, the sheets have high tensile strength and therefore require high forming pressure, so special forming equipment had to be installed, and its use was severely limited. . (4) "Resin temperature" in the fourth line from the bottom of page 4 is corrected to "die temperature."

（５）　　同第４頁下から５行目の「樹脂温度」を「ダ
イ温度」に訂正する。(5) "Resin temperature" in the 5th line from the bottom of page 4 is corrected to "die temperature."

（６）　　同第５頁１５行目の「Ｉ１２〜α５■」を［
（Ｌ１〜α５ｗＪに訂正する。(6) Change “I12~α5■” on page 5, line 15 to [
(Corrected to L1~α5wJ.

（７１同＃！６頁１行目Ｏｒ変形、」と「ロール」との
間に［ロール法においては」を加入する。(71 same #! Page 6, line 1, Or transformation, ``In the roll method'' is added between ``and ``roll.''

（８１同第６頁下から２行目の「熱処理により」と「透
明性」との間に「剛性はもとより従来維持されるだけＯ
ものと考えられた」を加入する。(81, page 6, second line from the bottom, between ``by heat treatment'' and ``transparency'', ``not only rigidity but also conventional
Added ``It was considered a thing.''

（９）　　同第６頁最下行の［向上したものであるー」
の後に次の文章を加入する。(9) ``Improved'' on the bottom line of page 6.
Add the following sentence after .

「こＯ原因、は明らかではないが、熱処理による可視光
以下Ｏ波長の大きさ以下の球晶の成長と急冷時に発生し
喪ミタロボイドの消失によるものと考えられる・」 −同第７頁１４行目ｏｒｆｌｔ！脂温度」を「ダイ温度
」に訂正する。``The cause of this is not clear, but it is thought to be due to the growth of spherulites below the visible light wavelength or below the O wavelength due to heat treatment and the disappearance of mourning mitalloboids that occur during rapid cooling.'' - Ibid., page 7, line 14. Eyes orflt! Correct "fat temperature" to "die temperature".

甑ｌ　同籐７頁１５行目の「α５〜ｔＯ■」を「ｔｓ■
」に訂正する。甑l Change “α5~tO■” on page 7, line 15 of the same rattan to “ts■
” is corrected.

篩　同１［８頁５行ＩＱ　ｒＪＸ８−６７１４Ｊを（−
ＸＸＢＫ６７１４Ｊに訂正する。Sieve same 1 [8 pages 5 lines IQ rJX8-6714J (-
Corrected to XXBK6714J.

輪　同第８頁１６行＠ｏｒｅ脂温度」を「ダイ温度」に
訂正する。Wheel Same page 8, line 16 @ore fat temperature" is corrected to "die temperature".

拳◆　同第１１頁の第１表を別紙の通りに１正する。Fist◆ Make one correction to Table 1 on page 11 of the same page as shown in the attached sheet.

（以上） ％ＩＦＩ−請求の範囲 （１）　　ポリプロピレンを溶融状態で押出した後急冷
して得たポリプロピレンシートを６０℃以上ポリプロピ
レンの融点以下の温度で熱処理することを特徴とするポ
リプロピレンシートの製造方法。(above) %IFI-Claims (1) A method for producing a polypropylene sheet, characterized in that a polypropylene sheet obtained by extruding polypropylene in a molten state and then rapidly cooling is heat-treated at a temperature of 60°C or higher and lower than the melting point of polypropylene. .

（２）　　ポリプロピレンのダイ温度が２５０〜５００
℃であり、急冷温度が５０℃以下である特許請求の範囲
第１項記ｔｏ方法。(2) Polypropylene die temperature is 250-500
℃, and the quenching temperature is 50℃ or less.

（３）　　熱処理を加熱ロール法により１秒〜６０分行
なうことを特徴とする特許請求の範囲第１項または第２
項記載の方法。(3) Claim 1 or 2, characterized in that the heat treatment is performed for 1 second to 60 minutes by a heated roll method.
The method described in section.

Claims (2)

【特許請求の範囲】[Claims] （１）キリブーピレンを溶融状態で押出し先後急冷して
得たポリプロピレンシートを６０１以上１９プ四ピレン
Ｏ融点以下の温度で＃ＩｋＪ６覇することを特徴とすゐ
ポリプロピレンシートの製造方法。(1) A method for producing a polypropylene sheet, which is characterized in that a polypropylene sheet obtained by extruding molten Kiribupyrene and rapidly cooling it at a temperature of 601 to 19% and below the melting point of 4-pyrene has #IkJ6. （２）　ポリプロピレンＯ溶融温度が２５０〜ＳＯＯ℃
であ如、急冷温度が５０℃以下である特許請求の範■第
１項記載の方法。 （２））　熱ＩＪ８Ｉｉｉを加龜−−ル法によ砂１秒〜
６０分行なうことを特徴とする特許請求ＯＩ１ｍｌ第１
項まえは第２項記職Ｏ方法。(2) Polypropylene O melting temperature is 250~SOO℃
The method according to claim 1, wherein the quenching temperature is 50°C or less. (2)) Apply heat IJ8Iii to sand for 1 second to
Patent claim OI 1ml No. 1 characterized in that it is carried out for 60 minutes
Before the section, refer to Section 2.
JP57024304A 1982-02-19 1982-02-19 Manufacture of polypropylene sheet Granted JPS58142818A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP57024304A JPS58142818A (en) 1982-02-19 1982-02-19 Manufacture of polypropylene sheet

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP57024304A JPS58142818A (en) 1982-02-19 1982-02-19 Manufacture of polypropylene sheet

Publications (2)

Publication Number Publication Date
JPS58142818A true JPS58142818A (en) 1983-08-25
JPS6311968B2 JPS6311968B2 (en) 1988-03-16

Family

ID=12134428

Family Applications (1)

Application Number Title Priority Date Filing Date
JP57024304A Granted JPS58142818A (en) 1982-02-19 1982-02-19 Manufacture of polypropylene sheet

Country Status (1)

Country Link
JP (1) JPS58142818A (en)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60159016A (en) * 1983-12-31 1985-08-20 バイエル・アクチエンゲゼルシヤフト Manufacture of plastic film having improved optical property
JPS62148251A (en) * 1985-12-23 1987-07-02 出光石油化学株式会社 Manufacture of vessels
JPS62256803A (en) * 1986-04-30 1987-11-09 Idemitsu Petrochem Co Ltd Propylene homopolymer and its production
EP0428972A2 (en) * 1989-11-20 1991-05-29 MITSUI TOATSU CHEMICALS, Inc. Moulded articles of syndiotactic polypropylene and method for preparing same
EP0466926A1 (en) * 1989-04-11 1992-01-22 MITSUI TOATSU CHEMICALS, Inc. Syndiotactic polypropylene molding and method of producing the same
US5200131A (en) * 1990-04-09 1993-04-06 Mitsui Toatsu Chemicals, Inc. Method for molding syndiotactic polypropylene
US5258419A (en) * 1989-06-26 1993-11-02 Minnesota Mining And Manufacturing Company Methods of preparing radiation resistant heat sealable polymer blends
US5260395A (en) * 1990-04-09 1993-11-09 Mitsui Toatsu Chemicals, Inc. Method for molding syndiotactic polypropylene and molded article
EP0650818A2 (en) * 1993-10-29 1995-05-03 MITSUI TOATSU CHEMICALS, Inc. Tubular film extrusion method of polypropylene
JP2009255414A (en) * 2008-04-17 2009-11-05 Sumitomo Chemical Co Ltd Method of manufacturing polypropylene-based film

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5390078B2 (en) * 2007-07-06 2014-01-15 出光ユニテック株式会社 Polypropylene molded product, sheet-like polypropylene molded product, and method for producing polypropylene thermoformed product

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5527203A (en) * 1978-08-16 1980-02-27 Showa Denko Kk Producing process of polypropyrene sheet having superior transparency
JPS55105532A (en) * 1979-02-01 1980-08-13 Showa Denko Kk Molding method for thermoplastic resin film

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5527203A (en) * 1978-08-16 1980-02-27 Showa Denko Kk Producing process of polypropyrene sheet having superior transparency
JPS55105532A (en) * 1979-02-01 1980-08-13 Showa Denko Kk Molding method for thermoplastic resin film

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0246151B2 (en) * 1983-12-31 1990-10-15 Bayer Ag
JPS60159016A (en) * 1983-12-31 1985-08-20 バイエル・アクチエンゲゼルシヤフト Manufacture of plastic film having improved optical property
JPS62148251A (en) * 1985-12-23 1987-07-02 出光石油化学株式会社 Manufacture of vessels
JPS62256803A (en) * 1986-04-30 1987-11-09 Idemitsu Petrochem Co Ltd Propylene homopolymer and its production
EP0466926A1 (en) * 1989-04-11 1992-01-22 MITSUI TOATSU CHEMICALS, Inc. Syndiotactic polypropylene molding and method of producing the same
US5232992A (en) * 1989-04-11 1993-08-03 Mitsui Toatsu Chemicals, Incorporated Molded articles of syndiotactic polypropylene and method for preparing same
US5258419A (en) * 1989-06-26 1993-11-02 Minnesota Mining And Manufacturing Company Methods of preparing radiation resistant heat sealable polymer blends
US5591817A (en) * 1989-11-20 1997-01-07 Mitsui Toatsu Chemicals, Inc. Molded articles of syndiotactic polypropylene and method for preparing same
EP0428972A2 (en) * 1989-11-20 1991-05-29 MITSUI TOATSU CHEMICALS, Inc. Moulded articles of syndiotactic polypropylene and method for preparing same
US5759469A (en) * 1989-11-20 1998-06-02 Mitsui Toatsu Chemicals, Inc. Method for preparing molded articles of syndiotactic polypropylene
US5200131A (en) * 1990-04-09 1993-04-06 Mitsui Toatsu Chemicals, Inc. Method for molding syndiotactic polypropylene
US5260395A (en) * 1990-04-09 1993-11-09 Mitsui Toatsu Chemicals, Inc. Method for molding syndiotactic polypropylene and molded article
EP0650818A3 (en) * 1993-10-29 1995-06-14 MITSUI TOATSU CHEMICALS, Inc. Tubular film extrusion method of polypropylene
EP0650818A2 (en) * 1993-10-29 1995-05-03 MITSUI TOATSU CHEMICALS, Inc. Tubular film extrusion method of polypropylene
JP2009255414A (en) * 2008-04-17 2009-11-05 Sumitomo Chemical Co Ltd Method of manufacturing polypropylene-based film

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