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    • 6. 发明授权
    • Combination mould portion and protective element for pipe
    • 组合模具部分和管道保护元件
    • US4522669A
    • 1985-06-11
    • US413823
    • 1982-09-01
    • Olof NordinSoren Forsberg
    • Olof NordinSoren Forsberg
    • B28B21/56B28B21/76B29C39/10F16L21/03B29D27/00B28B7/20B29C17/02B65H69/02
    • F16L21/03B28B21/563B28B21/76B29C39/10Y10S264/04Y10T156/1038
    • A mould portion and/or protective element of the type consisting of a material subjected to deformation is disclosed. A method and a device for manufacturing such a mould portion and/or protective element are also disclosed.The mould portion and/or protective element is preferably intended to be used as a mould portion in moulding an article and/or as a protective element to prevent access of soil and water to a surface portion of the article during transportation and storage thereof.Such materials subjected to dimensional changes as can be used as mould portions and/or protective elements present the advantages of being inexpensive and permitting removal of the article without difficulty. One such material is for example cellular plastics. The dimensional changes, however, have entailed so great difficulties in using mould portions and/or protective elements of such materials that they have made the use of the material impossible.To eliminate the above mentioned disadvantage the mould portion and/or protective element of a material subjected to dimensional changes is manufactured with the desired dimensions, starting from at least one blank, immediately before the mould portion and/or protective element is used to mould the article or join the mould portion and/or protective element to the article to protect the surface portion thereof. Alternatively, the mould portion and/or protective element of a material subjected to dimensional changes is manufactured with the desired dimensions, starting from at least one blank after the blank has reached dimensional stability.
    • 公开了由受到变形的材料构成的类型的模具部分和/或保护元件。 还公开了一种用于制造这种模具部分和/或保护元件的方法和装置。 模具部分和/或保护元件优选地用于模制制品和/或作为保护元件的模具部分,以防止在输送和储存期间将土壤和水进入制品的表面部分。 作为可用作模具部分和/或保护元件的尺寸变化的这种材料具有便宜并且容易地取出制品的优点。 一种这样的材料是例如细胞塑料。 然而,尺寸变化在使用这些材料的模具部分和/或保护元件方面带来了如此巨大的困难,使得它们不可能使用该材料。 为了消除上述缺点,在模具部分和/或保护元件用于模制之前,立即从尺寸变化的材料的模具部分和/或保护元件以至少一个坯料开始以期望的尺寸制造 制品或将模具部分和/或保护元件接合到制品上以保护其表面部分。 或者,经过尺寸变化的材料的模具部分和/或保护元件以所需的尺寸制造,从坯件达到尺寸稳定性之后的至少一个坯料开始。
    • 9. 发明授权
    • Process and apparatus for pre-foaming synthetic plastics
    • 用于预发泡合成塑料的方法和装置
    • US4510106A
    • 1985-04-09
    • US551858
    • 1983-11-15
    • Kurt Hirsch
    • Kurt Hirsch
    • B29B13/06B29C44/34B29D27/00F26B13/30
    • B29B13/065B29C44/3461Y10S264/09Y10S264/15
    • A process of pre-foaming blowing agent-containing plastic materials, in which the plastic material particles which have been pre-foamed by the addition of heat are transferred without an intermediate resting stage from a sealed pre-foaming chamber into a drying and stabilizing chamber, with a vacuum being maintained during the drying and stabilizing operation.An apparatus for the performance of the process includes a pre-foaming chamber, beneath which there is provided a chamber in which the pre-foamed plastic material is dried and stabilized. The charging opening of the drying and stabilizing chamber is directly under the discharge opening of the pre-foaming chamber and is hermetically sealable by means of a slide valve.
    • 一种预发泡含发泡剂的塑料材料的方法,其中已经通过加热预发泡的塑料材料颗粒在没有中间静置阶段的情况下从密封的预发泡室转移到干燥和稳定室 在干燥和稳定操作期间保持真空。 用于实施该方法的装置包括预发泡室,在其前面设置有一个室,其中预发泡塑料材料被干燥和稳定化。 干燥稳定室的充气开口直接位于预发泡室的排放口下方,并通过滑阀气密密封。