...In this case, the gut (filament) extruded from the die is cut into small pieces with a cutter, and the resulting chips (pellets) are molded again with an injection molding machine (Figure 4). (5) Blow Molding This method creates a tubular body called a parison by extrusion molding or injection molding, and then blows compressed air into the inside of the parison to expand the material and solidify it tightly against the mold. It is suitable for making bottles, and in addition to polyethylene and polypropylene, polyethylene terephthalate (PET) bottles are also being made recently (Figure 5). ... *Some of the terminology that refers to "blow molding" is listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…その場合にはダイから押し出されたガット(フィラメント)をカッターで細断し,得られたチップ(ペレット)を再度射出成形機で成形する(図4)。(5)吹込成形blow molding 押出成形または射出成形でパリソンといわれる管状体をつくり,この内部に圧縮空気を吹き込み,材料を膨張させ,金型に密着固化させる方法である。瓶の製造に適しており,ポリエチレン,ポリプロピレンのほか,最近ではポリエチレンテレフタレート(PET)の瓶もつくられている(図5)。… ※「blow molding」について言及している用語解説の一部を掲載しています。 出典|株式会社平凡社世界大百科事典 第2版について | 情報 |
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