| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To obtain a paper container which can be subjected to deep-drawing without causing large outstanding wrinkles even if deep drawing is applied to one blank mainly made of paper. <P>SOLUTION: The clearance between a flange presser 4 and the upper surface of a die 3 is set to 80-130% of the thickness of the blank, and the clearance between the outside surface of a punch 2 and the inside surface of the die is adjusted to 60-110% of the thickness of the blank. While the blank 9 is held to a constant thickness by the flange presser 4 and the upper surface of the die, the blank is compressed to the constant thickness by the outside surface of the punch and the inside surface of the die to be subjected to squeeze processing. By forming the blank 9 so that the size in the paper-making direction of blank original paper is longer than the size thereof in the direction right-angled to the paper-making direction by prescribed ratio, the uneven deformation of the length in the axial direction of the end part of a container opening after drawing/squeezing molding can be controlled. <P>COPYRIGHT: (C)2004,JPO</p> |
