Laminate structure suitable for carpet use and method of making
    7.
    发明授权
    Laminate structure suitable for carpet use and method of making 失效
    层压结构适用于地毯使用和制作方法

    公开(公告)号:US3867243A

    公开(公告)日:1975-02-18

    申请号:US33090573

    申请日:1973-02-09

    Abstract: A laminate structure, as in a carpet, in one form comprises a non-woven heat sealable fabric, heat sealed on one side, laminated with an adhesive to a facing layer of heat sealable fibers, applied as by an embossing roll which can be heated. The non-woven fabric can be a needle-punched assemblage of a scrim and fibers and the assemblage heat sealed on that side of the scrim from which the needles have emerged thus to lock the fibers into the scrim when heat sealing to provide a fibrous, non-heat sealed pad side of the assemblage. The adhesive can be a thermally responsive, i.e., a thermoplastic or thermosetting, film, powder or melt. In a modification a further backing can be present on the non-heat sealed pad side. Likewise, the second backing can be present. A non-slip structure is set forth.

    Abstract translation: 如同在地毯中一样的层压结构包括一层热密封的无纺布可热封的织物,一侧热密封,用粘合剂层压到面对可热封的纤维层,通过可加热的压花辊 。 该无纺织物可以是针刺组合物,其中织物和纤维被针刺组合,并且热密封在织布上的针织物出口处的组合物,从而在热封时将纤维锁定在松紧布中,以提供纤维状, 非热密封垫侧面的组合。 粘合剂可以是热响应的,即热塑性或热固性的膜,粉末或熔体。 在一个修改中,在非热密封垫侧上可以存在另外的背衬。 同样地,第二背衬可以存在。 阐述了防滑结构。

    Filter for a crystal purification column
    10.
    发明授权
    Filter for a crystal purification column 失效
    过滤晶体纯化柱

    公开(公告)号:US3190450A

    公开(公告)日:1965-06-22

    申请号:US21519062

    申请日:1962-08-06

    Abstract: 976,526. Filters for liquids; crystallizing. PHILLIPS PETROLEUM CO. July 25th, 1963 [Aug. 6, 1962], No. 29486/63. Headings B1D and B1G. A liquid feed mixture of two or more components, one of which is separable from the mixture by crystallization, is forced by a pump 3, Fig. 1, into a chiller A, where one of the components is crystallized, and then into a cylindricalshell 4 having a filtering zone B where liquid passes through a cylindrical filter 114 and leaves by a pipe 16, Figs. 1 and 2. The crystal mass passes through a reflux zone C to a heater 17 which melts the crystals. Part of the melt is withdrawn through a pipe 18 and the remainder is forced back through reflux zone C to form reflux which effects crystal purification. A piston 21 in a cylinder 19 applies a back pressure to the material in the apparatus at a frequency of from 50 to 400 (preferably 150 to 250) pulsations per minute. A thermocouple 29 is connected to a temperature-recorder-controller TRC which operates a valve 30 in pipe 18 and is adjusted so that the rate of withdrawal of melt through ippe 18 is varied to maintain a desired rate of advance of crystals through reflux zone C. The withdrawal of filtrate through pipe 16 may be controlled by a solenoid valve 32 so that filtrate is removed only on the compression stroke of piston 21. The withdrawal of melt by pipe 18 also may be controlled so that it ceases during the compression stroke of piston 21. Lists are given of compounds which may be separated from mixtures containing them. The process also may be used to remove water in the form of ice crystals from fruit and vegetable juices and other liquid food products. The foregoing is substantially disclosed in Specification 807,100 (referred to) ; the present Specification discloses also a filter structure for zone B exemplified by Fig. 2. A housing 100, 104 is attached to the purification cylinder by flanges 102 and incorporates within an annular liquid-collecting space 108, a perforate cylinder 106 enclosing a coarse screen 112 and a fine screen 114 ; all these members are openended. Preferably the screen 114 is composed .of finer wires aligned with the direction of flow, and coarser wires perpendicular thereto, numbering, e.g., 350 and 20 per inch respectively ; the screen is of twill weave and may be rolled or ground. In an example, a mixture of methanol and water was treated in the apparatus to simulate the concentrating of beer.

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