Method for manufacturing lamp shell
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United States of America Patent
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Oct 23, 2012
Grant Date -
Dec 16, 2010
app pub date -
Oct 30, 2009
filing date -
Jun 12, 2009
priority date (Note) -
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Abstract
A method for manufacturing lamp shell to improve structural strength and light penetration includes steps of: providing a plastic material, injecting the plastic material into a injection molding equipment to form a preform containing a first space with an opening and a connecting section at one end and a closed another end to form a light penetrating section, and placing the preform in a blow molding equipment and blowing the plastic material by injecting gas to inflate the preform through gas pressure to form a second space at a greater size than the first space to become a lamp shell. The lamp shell thus formed has a greater structural strength to meet safety requirements, and also provides improved light penetration, and can reduce material consumption of the lamp shell to save production cost.
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