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    • 136. 发明申请
    • METHOD FOR FORMING PIPE OF IMPROVED CONSTRUCTION
    • 用于形成改进施工管道的方法
    • WO1995027607A1
    • 1995-10-19
    • PCT/US1995004272
    • 1995-04-07
    • ADVANCED DRAINAGE SYSTEMS, INC.
    • ADVANCED DRAINAGE SYSTEMS, INC.WISE, JohnMARTIN, Larry, L.
    • B29C47/00
    • B29C47/902B29C47/0023B29C47/003B29C47/0033B29C47/065B29C47/20B29C47/30B29C47/8835B29C47/884B29C47/908B29K2995/0072
    • A method for manufacturing plastic pipe such that the pipe has apertures formed therein when the pipe is viewed in cross section, comprising the steps of having hot plastic flow through a die (15) and subsequently be extruded through a die head (17) to form an extruded wall component having first and second end walls, with the die head (17) having formed therein a plurality of first sized gaps (17a) and a plurality of second sized gaps (17b), with the second sized gaps (17b) having an aperture (17c) located inside each of said second sized gaps (17b). The die (15) is secured to a manifold assembly (10), with the manifold assembly (10) comprising sets of tubes (16) located centrally of one another, each set of tubes (16) comprising a water inlet tube (150), a tube through which a vaccum is pulled (140), and a water return tube (130). Each set of tubes (16) is positioned longitudinally within a respective die manifold with the outermost surface of each set of tubes (16) spaced a first distance from the respective die manifold. Each of the respective tubes (16) extends through the die (15).
    • 一种用于制造塑料管的方法,使得当在横截面中观察管时,管具有形成在其中的孔,包括以下步骤:使热塑性流过模具(15),随后通过模头(17)挤出以形成 具有第一和第二端壁的挤出壁部件,其中模头(17)在其中形成有多个第一尺寸的间隙(17a)和多个第二尺寸的间隙(17b),其中第二尺寸的间隙(17b)具有 位于每个所述第二尺寸间隙(17b)内的孔(17c)。 模具(15)固定到歧管组件(10),歧管组件(10)包括位于彼此中心的一组管(16),每组管(16)包括进水管(150) ,抽出真空的管(140)和回水管(130)。 每套管(16)纵向定位在相应的模具歧管内,每组管子(16)的最外表面与相应的模具歧管间隔开第一距离。 各管(16)中的每一个延伸穿过模具(15)。