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    • 7. 发明申请
    • DEVICE AND METHOD FOR PRODUCING THICK-WALLED MOULDED PLASTICS PARTS HAVING REDUCED SHRINKAGE SITES BY INJECTION MOLDING OR EMBOSSING
    • 用于生产具有减少的收缩部位的厚壁成型塑料部件的装置和方法通过注射成型或成型
    • US20120171452A1
    • 2012-07-05
    • US13375843
    • 2010-05-25
    • Arne SchmidtMarc PothChristian EberleWerner Hoess
    • Arne SchmidtMarc PothChristian EberleWerner Hoess
    • B32B27/30B29C45/73B29C45/76
    • B29C45/73B29C45/0025B29C45/561B29C2045/5635B29C2045/7343B29C2045/7393B29C2945/76531B29C2945/76739B29L2011/0016
    • The invention relates to a device and method for producing thick-walled plastic molded parts by injection molding or embossing. The device comprises a mold for injection molding or embossing, having a cavity, and is characterized in that the mold comprises a wall region adjacent to the cavity, and a body removed from the cavity and adjacent to the wall region near the cavity, wherein the body of the mold is designed for a temperature T1 and the wall region is designed for a temperature T2 different from the temperature T1. According to the method, the temperature T2 of the wall region of the mold near the cavity is brought to and held at a value greater than the Vicat temperature Tv of the plastic molding mass before and/or during the injection process, wherein the temperature T2 is greater than the temperature T1 of the mold body, and the temperature T2 of the wall region near the cavity is brought to a temperature below the Vicat temperature Tv of the plastic molding mass during the solidification of the plastic molding mass. The result is thick-walled molded plastic parts, such as optical lenses and the like, having reduced shrinkage sites.
    • 本发明涉及通过注塑或压花制造厚壁塑料模制件的装置和方法。 该装置包括用于注射成型或压花的模具,具有空腔,其特征在于,所述模具包括与所述空腔相邻的壁区域,以及从所述空腔移除并邻近所述空腔的所述壁区域的主体,其中, 模具的主体设计为温度T1,并且壁区域设计为不同于温度T1的温度T2。 根据该方法,模具附近的模具的壁区域的温度T2被提升并保持在比注塑过程之前和/或期间的塑料模塑料的维卡温度Tv的值,其中温度T2 大于模具体的温度T1,并且在塑料模制件的固化期间,腔体附近的壁区域的温度T2达到低于塑料模制件的维卡温度Tv的温度。 结果是厚壁模制塑料部件,例如光学透镜等,具有减小的收缩位置。