| US 7,540,737 B2 | ||
| Apparatus for producing bottle-type synthetic resin containers | ||
| Koji Yamanaka, Akou (Japan); Yoshihiro Iimura, Matsudo (Japan); and Daisuke Uesugi, Matsudo (Japan) | ||
| Assigned to Yoshino Kogyosho Co., Ltd., Tokyo (Japan) | ||
| Filed on Sep. 25, 2007, as Appl. No. 11/902,761. | ||
| Application 11/902761 is a division of application No. 10/482120, granted, now 7,306,760, previously published as PCT/JP02/06516, filed on Jun. 27, 2002. | ||
| Claims priority of application No. 2001-199130 (JP), filed on Jun. 29, 2001. | ||
| Prior Publication US 2008/0031993 A1, Feb. 07, 2008 | ||
| Int. Cl. B29C 49/68 (2006.01) | ||
| U.S. Cl. 425—174.4 [425/526] | 10 Claims |
| 1. An apparatus for producing bottle-type synthetic resin containers, comprising a heat treatment means for heating and crystallizing a neck portion of a preform corresponding to a neck portion of a container, wherein said heat treatment means is operated in a first stage so that said neck portion of the preform is temporarily heated thereby causing a temperature in said neck portion to elevate above a range in which crystallization of the synthetic resin is promoted and below a melting point of the synthetic resin, and in a second stage so that the neck portion is subsequently maintained at a temperature within the range in which crystallization of the synthetic resin is promoted. |