JPWO2015037572A1 - 樹脂積層体の製造方法 - Google Patents
樹脂積層体の製造方法 Download PDFInfo
- Publication number
- JPWO2015037572A1 JPWO2015037572A1 JP2014546208A JP2014546208A JPWO2015037572A1 JP WO2015037572 A1 JPWO2015037572 A1 JP WO2015037572A1 JP 2014546208 A JP2014546208 A JP 2014546208A JP 2014546208 A JP2014546208 A JP 2014546208A JP WO2015037572 A1 JPWO2015037572 A1 JP WO2015037572A1
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- Prior art keywords
- resin
- resin composition
- foamed
- laminate
- foamable
- 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
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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
- B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
- B29K2995/0037—Other properties
- B29K2995/0065—Permeability to gases
- B29K2995/0067—Permeability to gases non-permeable
-
- 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
- B29L2007/00—Flat articles, e.g. films or sheets
- B29L2007/002—Panels; Plates; Sheets
-
- 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
- B29L2009/00—Layered products
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
- Molding Of Porous Articles (AREA)
- Laminated Bodies (AREA)
Abstract
Description
本発明に係る第1の実施形態では、フィードブロック法による樹脂積層体の製造方法及びその製造方法で使用される製造装置について説明する。図1は、第1の実施形態に係る樹脂積層体の製造装置の略図的正面断面図である。
図6は、本発明の第1の実施形態の変形例に係る樹脂積層体の製造装置の略図的正面断面図である。
第1の実施形態では、フィードブロック法を用いたが、本発明では、第2の実施形態に示すようにマルチマニホールド法を用いてもよい。
本発明で使用される発泡性樹脂組成物としては、熱可塑性樹脂と、発泡剤とを含む発泡性樹脂組成物を用いることができる。
非発泡樹脂組成物は、非発泡樹脂層を構成するための組成物である。この非発泡樹脂組成物としては、熱可塑性樹脂と適宜の添加剤を含む樹脂組成物を用いることができる。
上述したように、本発明においては、得られた樹脂積層体において、発泡樹脂層と、非発泡樹脂層との間に、ガスバリア層を形成するように、さらにガスバリア層を形成するための樹脂をフィードブロックに供給してもよい。
2…フィードブロック
3…金型
4…サイジングダイ
5…連結部
6…発泡性樹脂組成物
6A…発泡性樹脂層
6B…発泡樹脂層
7…非発泡樹脂組成物
7A…非発泡樹脂層
8…マルチマニホールド金型
9…内部空間
10…マルチマニホールド部
11…金型部
12…第1のマニホールド
12a…第1のマニホールドの端部
13…第2のマニホールド
13a…第2のマニホールドの端部
12A,13A…樹脂経路
14…未発泡状態の樹脂積層体
14A…樹脂積層体
Claims (11)
- 発泡樹脂層と、非発泡樹脂層とを積層してなり、少なくとも1層の発泡樹脂層を有する樹脂積層体の製造方法であって、
溶融状態にある未発泡状態の発泡性樹脂組成物と、前記非発泡樹脂層を形成するための非発泡樹脂組成物とを、シート成形するための金型内に供給し、樹脂積層体を形成する工程と、
前記発泡性樹脂組成物が未発泡状態又は発泡した状態にある前記樹脂積層体をサイジングダイに供給する工程とを備える、樹脂積層体の製造方法。 - 前記シート成形するための金型内に供給し、樹脂積層体を形成する工程において、前記発泡性樹脂組成物が未発泡状態の樹脂積層体を形成し、
前記サイジングダイに供給する工程において、前記発泡性樹脂組成物が未発泡状態の樹脂積層体をサイジングダイに供給する、請求項1に記載の樹脂積層体の製造方法。 - 前記シート成形するための金型内に供給し、樹脂積層体を形成する工程の前に、前記発泡性樹脂組成物と、前記非発泡樹脂組成物とを、フィードブロックに供給することにより、前記発泡性樹脂組成物と、前記非発泡樹脂組成物とを合流及び積層させる工程を備える、請求項1又は2に記載の樹脂積層体の製造方法。
- 前記発泡性樹脂組成物が未発泡状態の樹脂積層体をサイジングダイに供給する工程の後に、
前記サイジングダイ内で圧力開放することにより、前記発泡性樹脂組成物を発泡させて発泡樹脂層を形成する工程をさらに備える、請求項2又は3に記載の樹脂積層体の製造方法。 - 前記サイジングダイ内で圧力開放することにより、前記発泡性樹脂組成物を発泡させて発泡樹脂層を形成する工程の前に、
前記サイジングダイ内で、前記発泡性樹脂組成物が未発泡状態の樹脂積層体の表層を形成している樹脂組成物の結晶化温度まで冷却する工程をさらに備える、請求項4に記載の樹脂積層体の製造方法。 - 前記発泡性樹脂組成物が未発泡状態の樹脂積層体をサイジングダイに供給する工程が、
前記発泡性樹脂組成物が未発泡状態の樹脂積層体をサイジングダイに供給するに際し、圧力開放することにより、前記発泡性樹脂組成物を発泡させて発泡樹脂層を形成する工程を含む、請求項2又は3に記載の樹脂積層体の製造方法。 - 前記発泡樹脂層の両面に前記非発泡樹脂層を積層する、請求項1〜6のいずれか1項に記載の樹脂積層体の製造方法。
- 前記発泡性樹脂組成物と、前記非発泡樹脂組成物とを、フィードブロックに供給することにより、前記発泡性樹脂組成物と、前記非発泡樹脂組成物とを合流及び積層させる工程において、
得られた樹脂積層体において、前記発泡樹脂層と、前記非発泡樹脂層との間に、ガスバリア層を形成するように、さらに前記ガスバリア層を形成するための樹脂をフィードブロックに供給し、前記発泡性樹脂組成物と、前記非発泡樹脂組成物と、前記ガスバリア層を形成するための樹脂とを合流及び積層させる、請求項3〜7のいずれか1項に記載の樹脂積層体の製造方法。 - 前記ガスバリア層を形成するための樹脂が、エチレン−酢酸ビニル共重合体、ノルモルネン樹脂及びシクロオレフィンポリマーからなる群から選択された少なくとも1種である、請求項8に記載の樹脂積層体の製造方法。
- 溶融状態にある未発泡状態の発泡性樹脂組成物と、非発泡樹脂層を形成するための非発泡樹脂組成物とを、積層してなる積層体をシート成形するための金型と、
前記金型の下流側に連ねられて配置されたサイジングダイとを備える、樹脂積層体の製造装置。 - 前記発泡性樹脂組成物と、前記非発泡樹脂組成物とを、合流及び積層させるためのフィードブロックをさらに備える、請求項10に記載の樹脂積層体の製造装置。
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