JP6055843B2 - 単一の溶融物からの様々なプラスチック製品を形成するためのシステム及び方法 - Google Patents
単一の溶融物からの様々なプラスチック製品を形成するためのシステム及び方法 Download PDFInfo
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- JP6055843B2 JP6055843B2 JP2014550301A JP2014550301A JP6055843B2 JP 6055843 B2 JP6055843 B2 JP 6055843B2 JP 2014550301 A JP2014550301 A JP 2014550301A JP 2014550301 A JP2014550301 A JP 2014550301A JP 6055843 B2 JP6055843 B2 JP 6055843B2
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- additive
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- B29B7/885—Adding charges, i.e. additives with means for treating, e.g. milling, the charges
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B7/00—Mixing; Kneading
- B29B7/80—Component parts, details or accessories; Auxiliary operations
- B29B7/88—Adding charges, i.e. additives
- B29B7/90—Fillers or reinforcements, e.g. fibres
-
- 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
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/9258—Velocity
- B29C2948/926—Flow or feed rate
-
- 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
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/285—Feeding the extrusion material to the extruder
- B29C48/288—Feeding the extrusion material to the extruder in solid form, e.g. powder or granules
-
- 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
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/285—Feeding the extrusion material to the extruder
- B29C48/288—Feeding the extrusion material to the extruder in solid form, e.g. powder or granules
- B29C48/2886—Feeding the extrusion material to the extruder in solid form, e.g. powder or granules of fibrous, filamentary or filling materials, e.g. thin fibrous reinforcements or fillers
-
- 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
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/285—Feeding the extrusion material to the extruder
- B29C48/298—Feeding the extrusion material to the extruder in a location other than through a barrel, e.g. through a screw
-
- 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
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/92—Measuring, controlling or regulating
-
- 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
- B29K2101/00—Use of unspecified macromolecular compounds as moulding material
- B29K2101/12—Thermoplastic materials
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- 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
- B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
- B29K2105/0005—Condition, form or state of moulded material or of the material to be shaped containing compounding ingredients
-
- 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
- B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
- B29K2105/06—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts
- B29K2105/16—Fillers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2023/00—Tubular articles
- B29L2023/22—Tubes or pipes, i.e. rigid
Description
着色プラスチック製品は、3工程プロセスで製造される場合が多く、各工程は異なる設備で行われている。最初のプロセスにおいて、ポリエチレン、ポリプロピレン、ポリスチレンその他の樹脂といったプラスチック樹脂が製造施設で合成され、そして販売のためにペレット化される。第2工程において、別の施設でこのペレット化樹脂が着色剤マスターバッチなどの添加剤と混練され、そして成形されて着色ペレットになる。ここで使用するときに、マスターバッチとは、顔料又は他の添加剤を高濃度、例えば70重量%程度でブレンドされる材料のことである。最終工程において、着色プラスチックペレットが成形されてパイプ、シート、フィルム、ボトル等の最終製品になる。いくつかの状況では、着色剤は、プラスチック製品を製造する施設で樹脂とブレンドされる場合がある。
ここで記載するのは、単一の溶融物から様々なプラスチック製品を形成するためのシステムである。このシステムは、プラスチック樹脂を溶融して溶融物を形成させるように構成された押出機と、該押出機内において該溶融物に添加剤を供給するように構成された添加剤系とを備える主押出機システムを備えることができる。第1ダイは、溶融物から第1プラスチック製品を形成するように構成される;ダイバータシステムは、溶融物の少なくとも一部を副製品押出成形機システムに送るように構成される。この副製品押出機システムは、溶融物と製品添加剤とをブレンドして第2製品溶融物を形成するように構成された第2製品押出機を備える。添加剤供給装置は、製品添加剤を第2製品押出機に供給するように構成され、第2ダイは、製品溶融物から第2プラスチック製品を形成するように構成される。
ここで記載するのは、単一の初期溶融物から複数のプラスチック製品を形成するための方法及びシステムである。例えば、一次押出機は、樹脂を溶融し、そして特に安定剤などの一般的な添加物にブレンドするように構成できる。第1押出機からの溶融物の一部分を1つ以上の副押出機に向けることができると同時に、溶融物の残りの部分を、プラスチック製品を成形するためにペレタイザー又は他のシステムに送ることができる。副押出機において、着色剤、充填剤などの他の添加剤を溶融物とブレンドして製品溶融物を形成することができる。その後、製品溶融物をペレタイザー、引抜成形パイプダイ、シートダイ、又はフィルムダイに移動させて第2プラスチック製品を成形することができる。
図1は、単一の溶融物から様々なプラスチック製品を形成するために使用できる押出システム100のブロック図である。押出システム100では、樹脂102を、軟化プラスチックを形成するための主押出機システム104に供給する。本明細書で使用するときに、この軟化プラスチックを「溶融物」106という。樹脂102は、ペレット状、球形、溶液の状態又は任意の他の形態であることができる。例えば、押出成形システム100はプラスチック製造設備に配置することができ、その際、主押出機システム104は、樹脂を処理してペレットなどのプラスチック製品108にするように設計される。別の例として、押出成形システム100は、多数のプラスチック製品108を製造するように構成された、プラスチック配合工場に配置できる。樹脂102は、ポリエチレン、ポリプロピレン、スチレン、ポリカーボネート、ポリアクリレート、スチレン・ブタジエン共重合体又は任意の数の他の材料を含むことができる。例えば、一実施形態では、樹脂102は、パイプ、バッグ及び他の用途に使用される高密度ポリエチレン樹脂である。
図6は、単一の溶融物から複数のプラスチック製品を生成するための方法600のプロセス流れ図である。この方法は、ここで説明した構成又は第1押出機が第2押出機に溶融物の一部を供給すると共に、溶融物の別の部分でプラスチック製品を製造する能力を保持することのできる他の構成のいずれかを使用して実施できる。
ここで使用するときに、「押出機」とは、プラスチック溶融物を形成し、そしてこのプラスチック溶融物と添加剤とをブレンドするための装置のことである。押出機は、スクリューとバレルの内面との間に最小の隙間を有するバレル内に配置される一軸又は二軸を有することができる。各スクリューは、バレルとスクリューとの間に開口部を形成する、螺旋状のリッジ又はフライトを有する。フライトの深さは、樹脂に加えられるせん断及び応力を変化させるように制御でき、ここで、フライトが浅ければ、より高い応力環境が生じる。スクリューのシャフトをモータで回転させると、プラスチックがフライト内で剪断され、プラスチックを溶融又は加熱し、そしてこれをバレルの下に押しやる摩擦が生じる。二軸押出機におけるスクリューのフライトは、通常噛み合っており、その際、各スクリューは、完全に他のスクリューで拭われ、より効果的なブレンド環境を作り出し、そして溶融物をバレルの下に効果的に汲み出す。プラスチックは、バレルの端部にある開口部から、特に溶融ポンプ、ペレタイザー及びダイといった下流の装置に押し出される。押出機は、固体プラスチック樹脂からプラスチック溶融物を形成するように構成される標準的な押出機であることができ、又は溶液状のプラスチックから溶媒を除去し、プラチック溶融物を形成するように構成された脱揮押出機であることができる。ここで説明した実施形態は、押出機には限定されないが、重合体ミキサーを使用することもできる。重合体ミキサーは、樹脂に剪断力を付与するための逆回転非噛み合いブレンド部材を使用し、溶融物を形成し、そして添加剤にブレンドするシステムである。
102 樹脂
104 主押出機システム
106 溶融物
108 プラスチック製品
110 主添加剤
114 副押出機システム
116 着色剤及び添加剤
120 プラスチック製品
200 押出機システム
202 ペレット
206 分流弁
208 ピストン
210 アクチュエーター
214 溶融ポンプ
216 スクリーンパック
218 ペレタイザー
220 水流
222 メインライン
230 ペレタイザー
232 第2ライン
300 押出機システム
302 パイプ製品
304 パイプダイ
400 押出機システム
402 シート又はフィルム製品
404 シート又はフィルムダイ
406 ロールスタック
500 押出機システム
502 誘導弁
504 第1部分
506 第2部分
508 第2ライン
510 第2ペレット化製品
512 第3部分
514 第3ライン
516 第3ペレット化製品
Claims (21)
- 単一の溶融物から様々なプラスチック製品を形成するためのシステムであって、
次の構成を備える主押出機システムと:
プラスチック樹脂を溶融し、溶融物を形成するように構成された押出機;
該押出機内の該溶融物に添加剤を供給するように構成された添加システム;
該溶融物の少なくとも一部分を第2製品押出機システムに送るように構成されたダイバータシステム;及び
迂回されなかった溶融物から第1プラスチック製品を成形するように構成された第1ダイ;
次の構成を備える該第2製品押出機と:
該溶融物と添加剤とをブレンドし、第2製品溶融物を形成するように構成された製品押出機;
製品添加剤を該第2製品押出機に供給するように構成された添加剤供給装置;及び
第2製品溶融物から第2プラスチック製品を成形するように構成された第2ダイ;
を備え、該第2製品押出機が該主押出機の容量と比較して75%以下の容量を有するシステム。 - 前記ダイバータシステムが、複数の製品押出機のそれぞれに前記溶融物の少なくとも一部分を送るように構成された、請求項1に記載のシステム。
- 前記第2製品押出機が前記主押出機の容量と比較して50%以下の容量を有する、請求項1又は2に記載のシステム。
- 前記第2製品押出機が、等量の材料について前記主押出機よりも低い電力需要を有する、請求項1又は2に記載のシステム。
- 前記主押出機システムが溶融ポンプをさらに備える、請求項1又は2に記載のシステム。
- 前記第2製品押出機システムが溶融ポンプを備えない、請求項1又は2に記載のシステム。
- 第1又は第2ダイが引抜成形パイプダイを含む、請求項1又は2に記載のシステム。
- 前記第1又は第2ダイが、シートダイ、フィルムダイ又はシートダイ/フィルムダイの組合せを含む、請求項1又は2に記載のシステム。
- 前記第1又は第2ダイがインフレートフィルムダイを含む、請求項1又は2に記載のシステム。
- 前記添加剤供給装置が液体注入システムを備える、請求項1又は2に記載のシステム。
- 前記添加剤供給装置が溶融ポンプ供給装置を備える、請求項1又は2に記載のシステム。
- 次の構成:
前記溶融物と製品添加剤とをブレンドし、第3製品溶融物を形成するように構成された第3製品押出機;
該製品添加物を該第3製品押出機に供給するように構成された添加剤供給装置;及び
該第3製品溶融物から第3プラスチック製品を成形するように構成された第3ダイ
を備える第3製品押出機システムを備える、請求項1又は2に記載のシステム。 - 単一の溶融プロセスで様々なプラスチック製品を製造するための方法であって、
第1押出機内でプラスチック樹脂を溶融して第1溶融物を形成させ;
該第1溶融物の少なくとも一部分を第二押出機に送り、ここで、送られなかった該第1溶融物の任意の部分を第1プラスチック製品に成形し;
該第2押出機において添加剤を該溶融物とブレンドして第2溶融物を形成させ;そして
該第2溶融物から第2プラスチック製品を成形すること
を含み、該第2押出機が該第1押出機の容量と比較して75%以下の容量を有する方法。 - 第1プラスチック製品としてペレットを成形することを含む、請求項13に記載の方法。
- 前記第2プラスチック製品としてパイプを成形することを含む、請求項13又は14に記載の方法。
- 前記第2押出機内で黒色着色剤と前記溶融物とをブレンドすることを含む、請求項13又は14に記載の方法。
- 前記添加剤が安定剤、鎖切断剤、架橋剤又はそれらの任意の組み合わせを含む、請求項13又は14に記載の方法。
- 前記添加剤が着色剤、充填剤、強化材料、光安定剤、加工助剤又はそれらの任意の組み合わせを含む、請求項13又は14に記載の方法。
- 前記第1押出機から前記溶融物の一部分を第3押出機に移すことを含み、ここで、該第3押出機は、該溶融物に添加剤をブレンドして第3溶融物を形成するように構成され、しかも、該第3押出機は、該第3溶融物から第3プラスチック製品を成形するように構成される、請求項13又は14に記載の方法。
- 単一の溶融物から複数のプラスチック製品を製造するための方法であって、
主押出機内で樹脂を溶融して溶融物を形成させ;
該溶融物と添加剤とをブレンドし;
該溶融物の少なくとも一部分を複数の製品押出機のそれぞれに送り;
迂回されなかった主押出機内の溶融物の部分からプラスチック製品を成形し;
該複数の製品押出機のそれぞれにおいて複数の添加物と該溶融物とをブレンドし;そして
該複数の製品押出機のそれぞれから他のプラスチック製品を成形すること
を含む方法。 - 前記製品押出機のそれぞれが異なるプラスチック製品を成形する、請求項20に記載の方法。
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EP2797728A1 (en) | 2014-11-05 |
EP2797728B1 (en) | 2019-07-17 |
RU2014131592A (ru) | 2016-02-20 |
JP2015503470A (ja) | 2015-02-02 |
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