Morphological zones in micro injection molding of poly(oxymethylene)

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Proceedings titleAnnual Technical Conference - ANTEC, Conference Proceedings
Conference70th Annual Technical Conference of the Society of Plastics Engineers 2012, ANTEC 2012, 2 April 2012 through 4 April 2012, Orlando, FL
Pages18581862; # of pages: 5
SubjectBattenfeld; Micro molding; Micro-injection molding; Microstr8ucture; Poly(oxymethylene); Shish-kebabs; Skin layer; Skin-core; Transverse planes; Acetal resins; Morphology; Plastic products; Injection molding
AbstractA Battenfeld System 50 micro injection molding machine was used to produce micro moldings of polyoxymethylene (POM), using a stepwise reduced thickness (0.8 mm, 0.45 mm, 0.2 mm) mold. Polarized light microscopy (PLM) was employed to investigate the morphology of the POM micro moldings. Morphology was examined in both the flow and transverse planes. A variety of morphological zones (oriented skin, shish kebab, cylindrulite, twisted lamellae, oblate, spherulite, etc.) are obtained, depending on the location. The morphology depends strongly on the thickness of the molding and thickness changes. The oriented skin layer tends to diminish away from the gate and near the vent end.
Publication date
AffiliationNational Research Council Canada (NRC-CNRC); NRC Industrial Materials Institute (IMI-IMI)
Peer reviewedYes
NPARC number21269233
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Record identifier92ae4580-c1f6-4787-a922-d4d0ae6a318e
Record created2013-12-12
Record modified2016-05-09
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