THE USE OF MICROCELLULAR FOAMING TECHNOLOGY IN THE PRODUCTION OF THERMOPLASTIC PARTS

Yıl 2016, Cilt: 57 Sayı: 678, 53 - 59, 16.08.2016

Sami Sayer Arzu Yalçın Melikoğlu

Öz

In recent years it has been seen that developments in injection molding technology has increased in
terms of capacity in the production of thermoplastic parts and has contributed to innovative product
design. Microcellular foaming technology (MuCell), particularly with regard to injection molding,
offers advantages in the quality improvement and production costs of plastic parts. It also offers freedom of design and therefore is an innovative production technology that is starting to be more widely used in various fields including the automotive, food, medical, and white goods sectors. In the
MuCell injection method, pore formation is initiated by injecting the gases in the supercritical phase
to the molten thermoplastic material in the plasticisation unit. The dispersion of microcellular (1-100
μm) pores in the plastic part is fairly homogenous. When the MuCell injection process is compared
with the conventional injection process, it can be seen that, in the plastic parts produced with MuCell
technology, there are no distortion and sink marks and due to low polymer viscosity, the production
of plastic parts with thin walls can be carried out smoothly and, as a result, the weight of the parts is
reduced and the cycle time is shortened. The objective of this study is to present MuCell technology,
examine its application in the industrial field, and examine sample researches.

Anahtar Kelimeler

Microcellular foaming technology, MuCell, production of thermoplastics part

TERMOPLASTİK PARÇA ÜRETİMİNDE MİKROHÜCRESEL KÖPÜK TEKNOLOJİSİNİN KULLANIMI

Öz

Son yıllarda enjeksiyon kalıplama teknolojisindeki gelişmelerin, termoplastik parça üretiminde kapasite artışını hızlandırdığı ve yenilikçi ürün tasarımına katkı sağladığı görülmektedir. Özellikle enjeksiyon kalıplama teknolojileri arasında mikrohücresel köpük teknolojisi (MuCell), plastik parça kalitesinde iyileşme ve üretim maliyetlerinde sağlamış olduğu avantajların yanı sıra, tasarımda sağlamış
olduğu serbestlik sayesinde otomotivden gıdaya, medikalden beyaz eşya sektörlerine kadar farklı
alanlarda giderek yaygınlaşan yenilikçi bir üretim teknolojisidir. MuCell enjeksiyon yönteminde, süper kritik fazdaki gazların plastikleşme ünitesindeki eriyik haldeki termoplastik malzeme içine enjekte
edilmesi ile gözenek oluşumu başlatılır. Mikrohücresel (1-100μm) boyutlarda oluşan gözeneklerin
plastik parça içindeki dağılımı oldukça homojendir. MuCell enjeksiyon prosesi konvensiyonel enjeksiyon prosesi ile karşılaştırıldığında; MuCell teknolojisi ile üretilen plastik parçalarda, çarpılma ve
çökme izlerinin tamamen ortadan kalktığı, düşük polimer viskozitesi sayesinde ince duvar kalınlığına
sahip plastik parça üretimlerinin sorunsuz bir şekilde gerçekleştiği ve bunun sonucu olarak da parça
ağırlığının azaldığı ve çevirim süresinin kısaldığı görülmektedir. Bu çalışmada, MuCell teknolojisinin
tanıtımı ve endüstriyel alanda yapılan uygulama ve araştırma örneklerinin incelenmesi amaçlanmıştır. 

Anahtar Kelimeler

Mikrohücresel köpük teknolojisi, MuCell, termoplastik parça üretimi

Kaynakça

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