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    • 83. 发明授权
    • Method for making a tubular product, especially a catheter, and article
made thereby
    • 用于制造管状产品,特别是导管的方法和由此制成的制品
    • US6017335A
    • 2000-01-25
    • US488083
    • 1995-06-07
    • Warren R. Burnham
    • Warren R. Burnham
    • B29C47/00B29C47/02B29C47/06B29C47/90B29C53/58B29C70/50B29C70/82A61M25/00
    • B29C47/903A61M25/0012A61M25/0053B29C47/0016B29C47/0023B29C47/0026B29C47/003B29C47/0033B29C47/023B29C47/025B29C47/128B29C47/90B29C70/50B29C70/82B29C47/0066B29C47/021B29C47/04B29C47/8805B29C47/908B29C53/58B29L2023/22B29L2031/7542
    • A process for making a reinforced tubular product, especially a catheter, in a single extrusion step. A reinforcing member is applied to an extruded thermoplastic catheter body of about its finished size which is softened by heating while tensioning the reinforcing member to control the surface deformation or penetration of the catheter wall by the reinforcing member to produce an irregular surface contour on the catheter body. The catheter body is then smoothed in a sizing die burying the reinforcement to form the finished product. The heating step may be in addition to or substituted by a curing step when a thermosetting or cross-linking material is used for the body. The reinforcement may be braid, or a helical wrap of one or more members applied at one or more controlled angles relative to the axis of the catheter to control the apparent stiffness and torque transmission efficiency of the catheter. The process is particularly adapted to making a catheter having its reinforcement interrupted to provide a unitary non-reinforced distal tip. By this process, the radial location of the reinforcement in the wall of the catheter is easily controlled according to the material of the body, the heating conditions, and the tension on the reinforcing member. Multiple extrusions to form a reinforced catheter body are thus not required.
    • 在单个挤出步骤中制造增强的管状产品,特别是导管的方法。 将加强构件施加到其成品尺寸的挤出热塑性导管体上,其通过加热而软化,同时张紧加强构件以控制加强构件的导管壁的表面变形或穿透,以在导管上产生不规则的表面轮廓 身体。 然后将导管主体平整在一个定型模具中,该模具埋入加强件以形成成品。 当热固性或交联材料用于身体时,加热步骤可以是固化步骤的添加或替代。 加强件可以是编织物,或一个或多个构件的螺旋包裹物,其以相对于导管的轴线的一个或多个受控角度施加以控制导管的表观刚度和扭矩传递效率。 该方法特别适用于制造其加强件中断的导管,以提供一体的非增强的远端尖端。 通过该过程,可以根据身体的材料,加热条件和加强构件上的张力容易地控制加强件在导管壁中的径向位置。 因此不需要多个挤压以形成加强的导管体。
    • 84. 发明授权
    • Composition and method for extruding plastic articles having accent
color pattern and comprising poly-.alpha.-methylstyrene pellets
    • 用于挤出具有重音色图案并包含聚-α-甲基苯乙烯颗粒的塑料制品的组合物和方法
    • US5869176A
    • 1999-02-09
    • US965236
    • 1997-11-06
    • John J. DorchesterBobby D. SmithRonald M. Harris
    • John J. DorchesterBobby D. SmithRonald M. Harris
    • B29C47/04B29C59/04B32B5/16
    • B29C47/046B29C47/0019B29C47/0021B29C47/003B29C47/0066B29C47/04B29C47/043B29C59/04B29K2027/06B29L2007/002Y10T428/24942Y10T428/24967Y10T428/254Y10T428/256
    • A new and useful a plastic article, particularly plastic siding, with an accent color pattern incorporated therein, a specially formed accent color pellet which is useful in manufacturing such an article, and a process for producing the article using the pellets are provided. The process contemplates extruding a plastic product from a base material formed of powder-sized particles and specially formed accent color pellets. The accent color pellets are alloyed masses of resins and pigment which are larger than the powder particles of the base material, and have a higher vicat softening point temperature than the base material. The alloyed pellets are designed to melt controllably and to mix controllably with the base material. During the extrusion process, the accent color pellets begin to soften and disperse later than the base material, and cause controllable dispersion of the accent color into the base material, thereby producing accent color streaks in the resulting product having controllable characteristics. The process is particularly suited for producing a simulated wood-grain or streaking effect in plastic siding, and as described can produce hard streaking, soft streaking, and a mottled or variegated streaking in which more than one accent color is used simultaneously. A novel formulation for the accent color pellets is disclosed, in which poly-.alpha.-methylstyrene is used as the only high vicat softening temperature resin.
    • 提供了一种新颖有用的塑料制品,特别是塑料壁板,其中掺有口音颜色图案,特别形成的可用于制造这种制品的重点颜料颗粒,以及使用该颗粒生产制品的方法。 该方法考虑从由粉末尺寸的颗粒和特别形成的重音色颗粒形成的基材挤出塑料制品。 重点颜料颗粒是比基材粉末颗粒大的树脂和颜料的合金质量,并且具有比基材更高的维卡软化点温度。 合金颗粒被设计成可控地熔化并与基材可控地混合。 在挤出过程中,重点颜料颗粒开始比基材晚于软化和分散,并且引起重音颜色到基材中的可控分散,从而在所得到的具有可控特性的产品中产生着色条纹。 该方法特别适用于在塑料壁板中产生模拟的木纹或条纹效果,并且如所描述的那样,可以产生强烈的条纹,柔软的条纹,以及斑驳或杂色的条纹,其中同时使用多种口音颜色。 公开了一种用于重音色颗粒的新型配方,其中使用聚-α-甲基苯乙烯作为唯一的高维卡软化温度树脂。
    • 88. 发明授权
    • Method of producing a lamellar polymeric body
    • 生产层状聚合体的方法
    • US5316703A
    • 1994-05-31
    • US5267
    • 1993-01-19
    • Walter J. Schrenk
    • Walter J. Schrenk
    • B32B3/18B29C47/00B29C47/04B29C47/06B29C70/58B29D11/00B32B20060101B32B3/22B32B7/02B32B27/00B32B27/08G02B5/28G02B5/30
    • B32B3/22B29C47/0019B29C47/04B29C47/128B29C70/585B29D11/00G02B5/287G02B5/3008G02B5/305B29C47/00B29K2995/0031Y10S428/913
    • A method for the production of a lamellar reflective polymeric body is provided and includes the steps of providing a first stream of a first heat plastified polymeric material and a second stream of a second heat plastified polymeric material, and encapsulating discrete portions of the first polymeric material in the second polymeric material by coextruding the polymeric materials to form a plurality of ribbon-like layers of the first polymeric material within a matrix of the second polymeric material to form the reflective polymeric body. The layers of the first polymeric material are arranged to have their major interfaces aligned substantially parallel to the major surfaces of the body such that at least 30% of light incident on the body is reflected. The ribbon-like layers may be further divided into a series of platelet-like layers to produce layers which are discontinuous in all major planar dimensions by passing the ribbon-like layers through a reciprocating feed plate or valve.
    • 提供了一种用于生产层状反射聚合物体的方法,包括以下步骤:提供第一热塑化聚合物材料的第一流和第二热塑化聚合物材料的第二料流,以及将第一聚合物材料的分立部分 在第二聚合物材料中,通过共挤出聚合材料以在第二聚合物材料的基质内形成第一聚合物材料的多个带状层以形成反射聚合物体。 第一聚合物材料的层被布置成使它们的主要界面基本平行于主体的主要表面排列,使得入射到身体上的至少30%的光被反射。 带状层可以进一步分成一系列类似薄片的层,以通过使带状层通过往复进给板或阀而产生在所有主要平面尺寸上不连续的层。