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公开(公告)号：EP2581191A4
公开(公告)日：2014-01-01
申请号：EP11795608
申请日：2011-06-07
申请人： POLYPLASTICS CO
CPC分类号： B29C33/3842 , B29C45/0025 , B29C45/78 , B29C2033/023 , B29C2945/76618 , B29K2995/0041
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2.发明公开PRODUCTION METHOD FOR INJECTION-MOLDED ARTICLE 审中-公开VERFAHREN ZUR HERSTELLUNG EINES SPRITZGEGOSSENEN GEGENSTANDS
公开(公告)号：EP2684670A1
公开(公告)日：2014-01-15
申请号：EP12755571.2
申请日：2012-02-29
CPC分类号： B29C45/73 , B29C33/56 , B29C45/0025 , B29C45/7207 , B29C2045/7356 , B29C2945/76618 , B29K2081/00 , B29K2995/0015 , C08L81/02
摘要： Provided is a technology that sufficiently suppresses dimensional change in the usage environment even without applying heat treatment in advance to a resin-molded article constituted of a crystalline thermoplastic resin. A resin composition constituted of a crystalline thermoplastic resin is injection-molded using a mold on the inner surface of which a heat-insulating layer is formed. It is preferable, in the present invention, to use a mold on which a heat-insulating layer is formed, the layer being constituted of porous zirconia formed by spraying method and having a thermal conductivity of 2W/(m·K) or less and a thickness of no less than 200 µ m. The injection-molded article obtained by the manufacturing method of the present invention has a dimensional change rate of 0.2% or less when left for 2 hours in an environment of a mold temperature + 20°C where the mold temperature is that at the time of injection molding and is Tg+30°C or more and Tg+80°C or less, in which Tg is a glass transition temperature of the crystalline thermoplastic resin.
摘要翻译： 即使不预先对由结晶性热塑性树脂构成的树脂成形体进行热处理也能充分抑制使用环境的尺寸变化的技术。 由结晶性热塑性树脂构成的树脂组合物在其内表面上形成有绝热层的模具注射成型。 在本发明中，优选使用形成有绝热层的模具，该层由通过喷雾法形成的热传导率为2W /（m·K）以下的多孔氧化锆构成， 厚度不小于200微米。 通过本发明的制造方法获得的注塑制品在模具温度+ 20℃的环境中放置2小时时的尺寸变化率为0.2％以下，其中模具温度为 Tg + 30℃以上，Tg + 80℃以下，Tg是结晶性热塑性树脂的玻璃化转变温度。
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公开(公告)号：EP2581191A1
公开(公告)日：2013-04-17
申请号：EP11795608.6
申请日：2011-06-07
CPC分类号： B29C33/3842 , B29C45/0025 , B29C45/78 , B29C2033/023 , B29C2945/76618 , B29K2995/0041
摘要： Provided is a method for manufacturing a mold for manufacturing a molded article, by which not only is the occurrence of flash suppressed but also the crystallization of the surface is sufficiently accelerated when the mold temperature during the molding of a crystalline thermoplastic resin is set at T c2 -100°C or less. Based on a relationship between crystallization rate and resin temperature of the crystalline thermoplastic resin, a temperature at which the crystalline thermoplastic resin filled into a mold has a sufficiently fast crystallization rate near a cavity surface and a retention time during which the crystalline thermoplastic resin in the mold is retained at a temperature equal to at least at a temperature at which the resin has the sufficiently fast crystallization rate are derived, such that the derived temperature and the derived retention time allow the molded article to have a surface whose crystallinity falls within a desired range, and a heat-insulating layer which, when mold temperature is T c2 -100°C or less, allows a time, during which temperature near surface of the mold cavity is retained at no less than the derived temperature, to fulfill the derived retention time is provided.
摘要翻译： 提供一种制造模制品的模具的方法，当结晶热塑性树脂成型时的模具温度设定为T时，不仅抑制了闪光的发生，而且表面的结晶也被充分加速 c2 -100℃以下。 基于结晶热塑性树脂的结晶速率和树脂温度之间的关系，填充到模具中的结晶热塑性树脂的温度在空腔表面附近具有足够快的结晶速率，并且其中结晶热塑性树脂在 模具保持在等于至少在导致树脂具有足够快的结晶速率的温度的温度下，使得衍生的温度和得到的保留时间使得模制品具有结晶度落在所需的温度范围内的表面 范围和隔热层，当模具温度为T c2-100℃或更低时，允许在模具腔表面附近的温度保持不低于衍生温度的时间来实现衍生的 提供保留时间。
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公开(公告)号：EP2684670A4
公开(公告)日：2015-02-11
申请号：EP12755571
申请日：2012-02-29
申请人： POLYPLASTICS CO
CPC分类号： B29C45/73 , B29C33/56 , B29C45/0025 , B29C45/7207 , B29C2045/7356 , B29C2945/76618 , B29K2081/00 , B29K2995/0015 , C08L81/02
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