JPS62183329A - Manufacture of thermoplastic resin sheet - Google Patents
Manufacture of thermoplastic resin sheetInfo
- Publication number
- JPS62183329A JPS62183329A JP2609886A JP2609886A JPS62183329A JP S62183329 A JPS62183329 A JP S62183329A JP 2609886 A JP2609886 A JP 2609886A JP 2609886 A JP2609886 A JP 2609886A JP S62183329 A JPS62183329 A JP S62183329A
- Authority
- JP
- Japan
- Prior art keywords
- rolling
- sheet
- thermoplastic resin
- same
- belt
- 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
Links
- 229920005992 thermoplastic resin Polymers 0.000 title claims abstract description 16
- 238000004519 manufacturing process Methods 0.000 title claims description 11
- 238000005096 rolling process Methods 0.000 claims abstract description 47
- 238000002844 melting Methods 0.000 claims description 6
- 230000008018 melting Effects 0.000 claims description 6
- 229920000098 polyolefin Polymers 0.000 claims description 4
- 229920000728 polyester Polymers 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 11
- 230000000704 physical effect Effects 0.000 abstract description 6
- 229920006230 thermoplastic polyester resin Polymers 0.000 abstract description 4
- 238000003825 pressing Methods 0.000 abstract description 3
- 238000001816 cooling Methods 0.000 abstract description 2
- 229920005672 polyolefin resin Polymers 0.000 abstract description 2
- 239000002994 raw material Substances 0.000 abstract description 2
- 239000000945 filler Substances 0.000 description 6
- -1 ethylene, propylene, 1-butene Chemical class 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 3
- 239000000178 monomer Substances 0.000 description 3
- 238000000465 moulding Methods 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- WSSSPWUEQFSQQG-UHFFFAOYSA-N 4-methyl-1-pentene Chemical compound CC(C)CC=C WSSSPWUEQFSQQG-UHFFFAOYSA-N 0.000 description 2
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- 150000001336 alkenes Chemical class 0.000 description 2
- IAQRGUVFOMOMEM-UHFFFAOYSA-N but-2-ene Chemical compound CC=CC IAQRGUVFOMOMEM-UHFFFAOYSA-N 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 238000000113 differential scanning calorimetry Methods 0.000 description 2
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 description 2
- 229920000139 polyethylene terephthalate Polymers 0.000 description 2
- 239000005020 polyethylene terephthalate Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- ZQDPJFUHLCOCRG-UHFFFAOYSA-N 3-hexene Chemical compound CCC=CCC ZQDPJFUHLCOCRG-UHFFFAOYSA-N 0.000 description 1
- YHQXBTXEYZIYOV-UHFFFAOYSA-N 3-methylbut-1-ene Chemical compound CC(C)C=C YHQXBTXEYZIYOV-UHFFFAOYSA-N 0.000 description 1
- LDTAOIUHUHHCMU-UHFFFAOYSA-N 3-methylpent-1-ene Chemical compound CCC(C)C=C LDTAOIUHUHHCMU-UHFFFAOYSA-N 0.000 description 1
- 229920000219 Ethylene vinyl alcohol Polymers 0.000 description 1
- 239000004606 Fillers/Extenders Substances 0.000 description 1
- 235000010582 Pisum sativum Nutrition 0.000 description 1
- 240000004713 Pisum sativum Species 0.000 description 1
- 229930182556 Polyacetal Natural products 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 229920002978 Vinylon Polymers 0.000 description 1
- 239000002216 antistatic agent Substances 0.000 description 1
- 229920001400 block copolymer Polymers 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- XNMQEEKYCVKGBD-UHFFFAOYSA-N dimethylacetylene Natural products CC#CC XNMQEEKYCVKGBD-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000005038 ethylene vinyl acetate Substances 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000012765 fibrous filler Substances 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 235000013312 flour Nutrition 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000010445 mica Substances 0.000 description 1
- 229910052618 mica group Inorganic materials 0.000 description 1
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 1
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 1
- 229920006122 polyamide resin Polymers 0.000 description 1
- 229920001707 polybutylene terephthalate Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000004926 polymethyl methacrylate Substances 0.000 description 1
- 229920006324 polyoxymethylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229920005990 polystyrene resin Polymers 0.000 description 1
- 229920005604 random copolymer Polymers 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000454 talc Substances 0.000 description 1
- 229910052623 talc Inorganic materials 0.000 description 1
- 229920002803 thermoplastic polyurethane Polymers 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 238000007666 vacuum forming Methods 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Landscapes
- Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
Abstract
Description
【発明の詳細な説明】
「布幸μ／７′１刊田４野１
本発明は２軸方向に配向された、熱可塑性樹脂圧延シー
トの製造法に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for producing a biaxially oriented thermoplastic resin rolled sheet.
［従来の技術］
熱可塑性樹脂シートを圧延、延伸等の処理により、分子
を配向させ、強度、弾性率、耐衝撃性を上げることは、
よく知られている。 厚さの薄いフィルムの場合、延伸
により比較的容易に製造できるため、広く行なわれてい
るが、厚さの厚いシートにおいては、延伸所要動力が大
きくなるとか、延伸むら、物性むらが出る等の理由で、
延伸は厚さの薄いシートの製造に利用されているにすぎ
ない。延伸に代わる方法としては、ロール圧延、平板プ
レス圧延が知られている。[Prior Art] It is possible to orient the molecules of a thermoplastic resin sheet by rolling, stretching, etc. to increase its strength, elastic modulus, and impact resistance.
well known. In the case of thin films, it is relatively easy to produce by stretching, so it is widely used. However, in the case of thick sheets, the required stretching power increases, and there are problems such as uneven stretching and uneven physical properties. For a reason,
Stretching is only used to produce thin sheets. Roll rolling and flat plate press rolling are known as methods replacing stretching.
［発明が解決しようとする問題点］
ロールにより２軸に圧延するとき、バッチ方式で繰り返
し圧延する必要が有るため、圧延時のシートの歪みが大
きく、工程通過性が悪いとか、また、所要圧下刃が大き
くなるとか、圧延所要動力が非常に大きくなるなどの欠
点を有する。また平板プレスによる圧延は、圧延された
シートの中央部と周辺部での物性むらや、正方形、長方
形のシートの均一な圧延が、本質的に難しいなどの欠点
を有する。[Problems to be Solved by the Invention] When biaxially rolling with rolls, it is necessary to repeatedly roll the sheet in a batch method, which causes large distortion of the sheet during rolling and poor process passability. It has drawbacks such as the blades becoming larger and the power required for rolling becoming very large. Further, rolling using a flat plate press has drawbacks such as uneven physical properties in the center and periphery of the rolled sheet and that it is essentially difficult to uniformly roll a square or rectangular sheet.
本発明の目的は少ない圧下刃で、容易に均一な物性を有
するシートを得る方法を見い出すことである。An object of the present invention is to find a method for easily obtaining a sheet having uniform physical properties with a small number of rolling blades.
［問題点を解決するための手段］
本発明者らは上述の目的に鑑み鋭意研究をした結果、驚
くべきことに熱可塑性樹脂を圧延するに際し、′ベルト
圧延設備により逐次に圧延することにより上述の目的が
達成できることを見い出し本発明に至った。[Means for Solving the Problems] As a result of intensive research in view of the above-mentioned purpose, the present inventors surprisingly found that when rolling a thermoplastic resin, the above-mentioned method was achieved by successively rolling the thermoplastic resin using belt rolling equipment. The inventors have discovered that the above objects can be achieved, leading to the present invention.
本発明でいうベルト圧延設備とは、例えば、ダブルスチ
ールベルトコンベアのごとき構造であって、かつベルト
の裏面より、強固な圧力に耐えられるバックアップ設備
で補強された、少なくとも一対のベルトを有する装置で
ある。本発明は、上記装置を用い、被圧延体の両面をベ
ルトではさみ、ベルト面によりあるいはベルト面を介し
て、圧力を加えることにより、圧延する方法である。そ
の装置の一例を第１図に示す。Ａ部で予熱された原料シ
ートはロール！、１°で圧延されたのち、１２．１２°
でバックアップされたステンレスベルト５．５°の間で
、厚さ一定、温度一定に、保持された後、冷却部りにお
いて冷却され、取り出される。The belt rolling equipment referred to in the present invention is, for example, equipment that has a structure such as a double steel belt conveyor, and has at least one pair of belts reinforced from the back side of the belt with backup equipment that can withstand strong pressure. be. The present invention is a method of rolling by using the above-mentioned apparatus, sandwiching both sides of the object to be rolled between belts, and applying pressure by or through the belt surface. An example of such a device is shown in FIG. The raw material sheet preheated in part A is rolled! , after rolling at 1°, 12.12°
After being maintained at a constant thickness and temperature between 5.5° of a stainless steel belt backed up by a stainless steel belt, it is cooled in a cooling section and taken out.
取り出されたｌ軸圧延シートは再び予熱された後、１回
目と直行方向に再度圧延される。The taken out l-axis rolled sheet is preheated again and then rolled again in a direction perpendicular to the first time.
本発明でいう圧延倍率とは、圧延前のシートの厚さと、
圧延後のシートの厚さの比で表す。ロール圧延において
は、圧延倍率が３倍以上になると、所要圧下刃が急激に
増加する。これにたいし、本発明のベルト圧延法に従え
ば、３倍以上の圧延倍率においても圧延に要する圧下刃
が低いという特長を有する。又、他の圧延設備、例えば
、平板プレス、ロールプレスよりも、平坦で、物性値の
均一なシートを得ることができる。The rolling ratio in the present invention refers to the thickness of the sheet before rolling,
It is expressed as the ratio of sheet thickness after rolling. In roll rolling, when the rolling ratio becomes 3 times or more, the number of required rolling blades increases rapidly. On the other hand, the belt rolling method of the present invention has the advantage that the number of rolling blades required for rolling is small even at a rolling ratio of 3 times or more. Furthermore, it is possible to obtain a sheet that is flatter and has more uniform physical properties than other rolling equipment, such as a flat plate press or a roll press.
本発明で用いられる熱可塑性樹脂術としてはポリオレフ
ィン樹脂、熱可塑性ポリエステル樹脂、ポリアミド樹脂
、ポリスチレン樹脂、ポリメチルメタクリレート樹脂、
熱可塑性ポリウレタン樹脂、エチレン酢酸ビニル共重合
体、エチレンビニルアルコール共重合体、ポリアセター
ル樹脂が挙げられる。ポリオレフィンとしてはエチレン
、プロピレン、１−ブテン、２−ブテン、イソブチン、
３−メチル−ブテン、４−メチル−１−ペンテン、４−
メチル−２−ペンテン、３−メチル−１−ペンテンなど
のオレフィン単量体の重合体あるいは、ブロックもしく
は、ランダム共重合体、あるいは、これらのオレフィン
系単量体を主体として、少割合の、例えば３０％以下の
割合の他の単量体との共重合体が挙げられる。また熱可
塑性ポリエステル樹脂としては、ポリエチレンテレフタ
レート、ポリブチレンテレフタレート等が例示される。Thermoplastic resins used in the present invention include polyolefin resins, thermoplastic polyester resins, polyamide resins, polystyrene resins, polymethyl methacrylate resins,
Examples include thermoplastic polyurethane resin, ethylene vinyl acetate copolymer, ethylene vinyl alcohol copolymer, and polyacetal resin. Polyolefins include ethylene, propylene, 1-butene, 2-butene, isobutyne,
3-methyl-butene, 4-methyl-1-pentene, 4-
Polymers, block or random copolymers of olefin monomers such as methyl-2-pentene and 3-methyl-1-pentene, or a small proportion of these olefin monomers, e.g. Examples include copolymers with other monomers in a proportion of 30% or less. Examples of the thermoplastic polyester resin include polyethylene terephthalate and polybutylene terephthalate.
これらのなかでも好適に用いられるのはポリオレフィン
及び熱可塑性ポリエステル樹脂である。Among these, polyolefins and thermoplastic polyester resins are preferably used.
本発明においては、上記熱可塑性樹脂に各種のフィラー
を添加することができる。用いられるフィラーは、ガラ
ス繊維、ビニロン繊維などの繊維状フィラー、マイカ、
タルク等のフレーク状フィラー、ガラスピーズ等の球状
フィラー、炭酸カルシウム、木粉等の不定形フィラーが
挙げられる。In the present invention, various fillers can be added to the thermoplastic resin. The fillers used include fibrous fillers such as glass fiber and vinylon fiber, mica,
Examples include flaky fillers such as talc, spherical fillers such as glass peas, and amorphous fillers such as calcium carbonate and wood flour.
その添加量は、用途、製造上の問題点等で制限を受け、
一様ではないが、概ね５重量％〜７０重量％の範囲であ
る。またこれらのフィラーの他に、増量剤、着色剤、難
燃剤、劣化防止剤、帯電防止剤、滑剤等を添加すること
ができる。The amount added is limited by usage, manufacturing issues, etc.
Although not uniform, it is generally in the range of 5% to 70% by weight. In addition to these fillers, extenders, colorants, flame retardants, deterioration inhibitors, antistatic agents, lubricants, etc. can be added.
本発明における、ベルト圧延は、熱可塑性樹脂がポリオ
レフィンの場合は、その融点でおこなうことがよい。こ
のような条件を採用することにより、得られたシートの
耐衝撃性は著しく上昇する。In the present invention, when the thermoplastic resin is a polyolefin, belt rolling is preferably carried out at its melting point. By adopting such conditions, the impact resistance of the obtained sheet is significantly increased.
ここで融点とは、樹脂の結晶融解開始温度以上、結晶融
解終了温度以下の温度範囲を示し、一般に５〜２０°Ｃ
／分の昇温速度による示差走査熱量測定（ＤＳＣ）によ
り決定される値である。より好ましい圧延温度はＤＳＣ
の吸熱ピークの頂点に対応する温度である。The melting point here refers to the temperature range from the start temperature of crystal melting of the resin to the end temperature of crystal melting, and is generally 5 to 20°C.
The value is determined by differential scanning calorimetry (DSC) with a heating rate of /min. A more preferable rolling temperature is DSC
This is the temperature corresponding to the top of the endothermic peak of .
又、熱可塑性樹脂としてポリエステルを用いて圧延を行
うときは、その素材の結晶化度が３０％以下で行うこと
が良い。このような条件を採用することにより、得られ
たシートの耐衝撃性は著しく上昇する。Further, when rolling is performed using polyester as the thermoplastic resin, it is preferable to perform rolling when the crystallinity of the material is 30% or less. By adopting such conditions, the impact resistance of the obtained sheet is significantly increased.
本発明のシートはそのままの形で、あるいは真空成形、
圧空成形、プレス成形などの成形加工法により、必要に
応じて容易に加工される。The sheet of the present invention can be used as is or by vacuum forming.
It can be easily processed as needed by molding methods such as air pressure molding and press molding.
［実施例コ
以下に実施例および比較例により本発明を具体的に説明
する。[Example] The present invention will be specifically explained below with reference to Examples and Comparative Examples.
実施例１
厚さ１６ｍｍのポリプロピレン（三菱油化製 ノーブレ
ンＭＨ８、融点１４０〜１７０’Ｃ）厚板を、１６２℃
に予熱したのち、第一図のベルト圧延設備により、２．
５倍に圧延して、厚さ６．４ｍｍのシートを得た。Ｂ部
、０部、Ｄ部のベルト間の間隔を６．０ｍｍ、温度を夫
々１６２℃、１６２℃、６０℃に保って、圧延を行った
。この時の、ロール１．ｌｏにかかる所要圧下刃は０．
３Ｔ／ｃｍであった。Example 1 A polypropylene (Noblen MH8 manufactured by Mitsubishi Yuka, melting point 140-170'C) thick plate with a thickness of 16 mm was heated at 162°C.
2. After preheating to 2.
It was rolled 5 times to obtain a sheet with a thickness of 6.4 mm. Rolling was carried out while keeping the distance between the belts in parts B, 0, and D at 6.0 mm, and the temperatures at 162°C, 162°C, and 60°C, respectively. At this time, roll 1. The required reduction blade applied to lo is 0.
It was 3T/cm.
取り出したシートの向きを９０°変えて、再び同じ圧延
設備を通して、厚さ、２．６ｍｍの２軸に配向されたシ
ートを得た。この時のベルト間の間隔は、２．４ｍ＋ｎ
であり、また所要圧下刃は０． ５’Ｉ’／ｃｍであっ
た。The direction of the sheet taken out was changed by 90 degrees and passed through the same rolling equipment again to obtain a biaxially oriented sheet having a thickness of 2.6 mm. The distance between the belts at this time is 2.4m+n
, and the required reduction blade is 0. It was 5'I'/cm.
得られたシートは平坦であり、反りはノート幅Ｉｎ当た
り８ｍｍと小さかった。第２図に示ず位置よりサンプリ
ングしたテストピースの耐衝撃性を第１表に示した。The obtained sheet was flat, and the warpage was as small as 8 mm per note width In. Table 1 shows the impact resistance of test pieces sampled from locations not shown in FIG.
比較例１
実施例１と同じ厚板を一対のロールをもつロール圧延設
備により、圧延した。厚さ２．６ｍｍのシートを得るた
めに、縦、横に夫々３回ずつの圧延を行ったが、６回目
のロール間隙は、０．５ｍｍ、所要圧下刃は２．２Ｔ／
ｃｍであった。また得られたシートは反りが極めて大き
く、１部当たり、２５０ｍｍであった。Comparative Example 1 The same thick plate as in Example 1 was rolled using roll rolling equipment having a pair of rolls. In order to obtain a sheet with a thickness of 2.6 mm, rolling was performed three times each in the vertical and horizontal directions, and the roll gap in the sixth round was 0.5 mm, and the required rolling blade was 2.2 T//.
It was cm. Further, the obtained sheet had extremely large warpage, which was 250 mm per part.
比較例２
実施例１と同じ厚板を平板油圧プレスで圧延して、厚さ
２．５ｍｍのシートを得た。第２図に示す位置よりサン
プリングしたテストピースの耐衝撃性を第１表に示した
。Comparative Example 2 The same thick plate as in Example 1 was rolled using a flat plate hydraulic press to obtain a sheet with a thickness of 2.5 mm. Table 1 shows the impact resistance of test pieces sampled from the locations shown in FIG.
第１表
実施例２
厚さ１６ｍｍのポリエチレンテレフタレート（［η］−
１，２、非品性）の厚板を用いて実施例１と同様な試験
を行った。Ｂ部、０部、Ｄ部の温度を夫々１１０℃、１
１０℃、２０℃とした。１回目、２回目の圧延の所要圧
下刃は、それぞれ０１２Ｔ／ ｃｍ、 ０ 、 ３
Ｔ ／ｃｍであった。得られたシートは厚さ２．４ｍｍ
の均一なものであった。Table 1 Example 2 Polyethylene terephthalate ([η]-
A test similar to that in Example 1 was conducted using thick plates of No. 1, 2, and (non-quality). The temperatures of part B, part 0, and part D were set at 110°C and 1
The temperature was 10°C and 20°C. The required reduction blades for the first and second rolling are 012T/cm, 0, and 3, respectively.
It was T/cm. The resulting sheet has a thickness of 2.4 mm
It was uniform.
［発明の効果］
本発明によれば従来の熱可塑性樹脂シートの製造法に比
べ少ない圧下刃で容易に均一な物性を有するシートを得
ることができる。[Effects of the Invention] According to the present invention, a sheet having uniform physical properties can be easily obtained using fewer rolling blades than in conventional thermoplastic resin sheet manufacturing methods.
第１図は本発明の製造工程を示す工程図であり、第２図
はテストピースの切り出し方法を説明するためのシート
の平面図である。FIG. 1 is a process diagram showing the manufacturing process of the present invention, and FIG. 2 is a plan view of a sheet for explaining the method of cutting out test pieces.
Claims (1)
より逐次に圧延することを特徴とする、熱可塑性樹脂シ
ートの製造法。 ２）圧延倍率を３倍以上とする、特許請求の範囲第１項
記載のシートの製造法。 ３）熱可塑性樹脂がポリオレフィンである特許請求の範
囲第１項記載のシートの製造法。 ４）熱可塑性樹脂がポリエステルである特許請求の範囲
第１項記載のシートの製造法。 ５）圧延を融点で行う、特許請求の範囲第３項記載のシ
ートの製造法。 ６）圧延を結晶化度３０％以下で行う特許請求の範囲第
４項記載のシートの製造法。[Scope of Claims] 1) A method for producing a thermoplastic resin sheet, which comprises sequentially rolling the thermoplastic resin using belt rolling equipment. 2) The method for producing a sheet according to claim 1, wherein the rolling ratio is 3 times or more. 3) The method for producing a sheet according to claim 1, wherein the thermoplastic resin is a polyolefin. 4) The method for producing a sheet according to claim 1, wherein the thermoplastic resin is polyester. 5) The method for producing a sheet according to claim 3, wherein rolling is performed at the melting point. 6) The method for producing a sheet according to claim 4, wherein rolling is performed at a crystallinity of 30% or less.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2609886A JPS62183329A (en) | 1986-02-08 | 1986-02-08 | Manufacture of thermoplastic resin sheet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2609886A JPS62183329A (en) | 1986-02-08 | 1986-02-08 | Manufacture of thermoplastic resin sheet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62183329A true JPS62183329A (en) | 1987-08-11 |
Family
ID=12184118
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2609886A Pending JPS62183329A (en) | 1986-02-08 | 1986-02-08 | Manufacture of thermoplastic resin sheet |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62183329A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04500933A (en) * | 1988-05-11 | 1992-02-20 | アルミニウム コンパニー オブ アメリカ | Method for producing biaxially oriented polymer sheet and sheet produced by the method |
| JPWO2002070115A1 (en) * | 2001-03-06 | 2004-07-02 | 旭化成ケミカルズ株式会社 | Manufacturing method of hollow fiber membrane |
-
1986
- 1986-02-08 JP JP2609886A patent/JPS62183329A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04500933A (en) * | 1988-05-11 | 1992-02-20 | アルミニウム コンパニー オブ アメリカ | Method for producing biaxially oriented polymer sheet and sheet produced by the method |
| JPWO2002070115A1 (en) * | 2001-03-06 | 2004-07-02 | 旭化成ケミカルズ株式会社 | Manufacturing method of hollow fiber membrane |
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