| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a synthetic resin cup-shaped container having necessary heat-resistance as an area crystallized by heating in a predetermined part of a flange according to purpose, sealing property and appearance property of a lid material. <P>SOLUTION: In the synthetic resin cup-shaped container, the range over the whole thickness, an upper face side part, a lower face side part, predetermined parts of the upper face side part and the lower face side part excepting center parts of the flange are areas crystallized by preheating with a hot plate and heating by laser beam irradiation thereafter. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
