Molding method of plastic materials
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United States of America Patent
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N/A
Issued Date -
Jul 20, 2006
app pub date -
Dec 29, 2005
filing date -
Jan 18, 2005
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A plastic molding method comprising steps of heating a plastic material with irradiation of infrared laser or focused infrared to the plastic material put in a cavity of a molding die and compressing the plastic material within the cavity for deforming the plastic material into a given shape. The plastic material is a transparent material to visible light to which an infrared absorption material is added. The infrared laser is irradiated using a carbon dioxide gas laser unit. A water content of the plastic material is no more than 0.01% by mass. The irradiation of the infrared to the plastic material is implemented under atmosphere of an inert gas. The plastic material is any one of polycarbonate, polyester, cyclopolyolefin, acryl, alicyclic acryl resin, and olefin-maleimide-alternating-copolymer. Accordingly, the plastic material can be effectively heated up by the infrared within a short time, thereby resulting in increasing a manufacturing efficiency of products.
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