发明申请
- 专利标题: Process for Production of Heat-Resistant Hollow Articles Made of Polylactic Acid Containing Resin
- 专利标题(中): 含聚酰胺树脂制成的耐热空心制品的制造方法
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申请号: US11814370申请日: 2005-11-08
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公开(公告)号: US20090008838A1公开(公告)日: 2009-01-08
- 发明人: Michio Komatsu , Toshitaka Matsuoka
- 申请人: Michio Komatsu , Toshitaka Matsuoka
- 优先权: JP2005-017584 20050126
- 国际申请: PCT/JP2005/020472 WO 20051108
- 主分类号: B29C45/43
- IPC分类号: B29C45/43
摘要:
Provided is a process for the production of heat-resistant hollow articles that does not cause the deformation of injection-molded products or the incapability of the same being taken out of a mold. A mold 1 that comprises a female mold portion 3 having a concavity 2, a male mold portion 5 having a convexity 4, and a stripper plate 7 having an edge-forming part 6, is heated so that the temperature of a surface facing a cavity 8, which is enclosed by the concavity, convexity, and edge-forming part becomes the crystallization temperature of a polylactic acid containing resin, and the polylactic acid containing resin is injected via a gate 9. The temperature of the polylactic acid containing resin injected into the cavity 8 is measured by use of an infrared sensor 12, and when the polylactic acid containing resin is a temperature in the range between the temperature T1 at which heat resistance exhibits itself and the temperature T2 at which the bowl A cannot be released from the mold, the male mold portion 5 and the stripper plate 7 are moved in the direction in which the male mold portion 5 and the stripper plate 7 are spaced from the female mold portion 3. Mold release is performed by introducing gas into between the inner surface of the hollow article A and the convexity 4 of the male mold portion 5. The hollow article A is taken out of the mold 1 by advancing the stripper plate 7 in the direction of the hollow article A.