Experimental study of transcription of minute width grooves in injection molding

Autor:	Hiroki Kuramoto, Masaki Yoshii, Kazunori Kato
Rok vydání:	1994
Předmět:	Engineering drawing Materials science Polymers and Plastics technology industry and agriculture General Chemistry Molding (process) Groove width visual_art Materials Chemistry visual_art.visual_art_medium Composite material Polycarbonate Transcription (software) Layer (electronics) Optical disc
Zdroj:	Polymer Engineering and Science. 34:1211-1218
ISSN:	1548-2634 0032-3888
DOI:	10.1002/pen.760341507
Popis:	In injection molding of substrates for optical discs, precise transcription of pits and grooves is very important. For high-density optical discs, molding transcription for minute grooves with widths on the sub-micron level is required. In this paper, in order to clarify the relationship between molding conditions and transcription quantitatively, transcription of minute rectangular grooves (width 0.55 μm, depth 70 nm) in injection molding of polycarbonate resin was studied. The relationship between molding conditions and the transcription heights was verified. And, by introducing the equivalent thickness of the vitrified layer concept, a transcription model related to the minute groove width is proposed. This equivalent thickness of the vitrified layer is estimated to be 100 to 150 nm at the point of filling completion under a certain molding condition. Also, using the above description of the equivalent thickness of the vitrified layer, it is possible to estimate the extent of transcription under the various molding conditions.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::b3c4215b08bf92a5bd0d2846452db45c https://doi.org/10.1002/pen.760341507 Zobrazit plný text záznamu Plný text