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    Spring insulator for wire spring cushioning structures such as mattresses
    1.
    发明授权
    Spring insulator for wire spring cushioning structures such as mattresses 失效
    弹簧绝缘子用于线弹簧缓冲结构如床垫

    公开(公告)号：US3923293A

    公开(公告)日：1975-12-02

    申请号：US37278573

    申请日：1973-06-22

    Applicant: CONWED CORP

    Inventor： WIEGAND DONALD E

    IPC: A47C7/34 ,  A47C27/05 ,  F16F3/04

    CPC classification number: A47C7/34 ,  A47C27/05 ,  A47C27/053

    Abstract: A spring insulator in the form of a specified flexible polyethylene plastic foam sheet is provided for wire spring cushion structures such as are employed in mattresses for preventing the soft cushioning material from dimpling down into the springs and for preventing the objectionable feel of the wire springs from penetrating through the cushioning material. The flexible polyethylene foam sheet spring insulator may be used alone or in combination with other materials such as plastic netting. The polyethylene foam sheet may be provided with means for dampening the sound which may be generated by contact between insulators and wire spring cushioning.

    Abstract translation: 提供了一种特殊柔性聚乙烯塑料泡沫片形式的弹簧绝缘体，用于线弹簧缓冲结构，例如用于床垫中的防止软缓震材料向下弹起的弹簧，并防止线弹簧的令人反感的感觉 穿透缓冲材料。 柔性聚乙烯泡沫板弹簧绝缘子可以单独使用或与其它材料如塑料网组合使用。 聚乙烯发泡片可以设置有用于衰减可能由绝缘体和线弹簧缓冲之间的接触而产生的声音的装置。

    Apparatus for the extrusion of plastic net and net like structures
    2.
    发明授权
    Apparatus for the extrusion of plastic net and net like structures 失效
    用于挤压塑料网和网状结构的装置

    公开(公告)号：US3767353A

    公开(公告)日：1973-10-23

    申请号：US3767353D

    申请日：1972-05-05

    Applicant: CONWED CORP

    Inventor： GAFFNEY B

    IPC: B29C47/12 ,  B29F3/04

    CPC classification number: B29C47/0033 ,  B29C47/0014 ,  B29C47/0026 ,  B29C47/0028 ,  B29C47/122 ,  B29L2028/00 ,  Y10S264/81

    Abstract: An improved extrusion apparatus and method for the extrusion of plastic net and net-like structures is provided. The apparatus is comprised of a plurality of die members at least one of which reciprocates in a vertical direction. One of the die members has a plurality of orifices therein for the extrusion of a first group of strands and at least one other die member has a forming surface thereon which coacts with a second forming surface on another die member to form a variable opening for the independent extrusion of a second group of strands. The distance between each orifice is maintained constant and the second group of strands is extruded at a point below that at which the orifices communicate with a polymer supply. The forming surfaces and orifices are so arranged relative to each other that at least one group of strands is forcefully urged toward the other group to cause the two groups of strands to weld together subsequent to extrusion.

    Abstract translation: 提供了一种用于挤出塑料网和网状结构的改进的挤出设备和方法。 该装置由多个模具构件组成，其中至少一个在垂直方向上往复运动。 模具构件中的一个在其中具有用于挤压第一组线材的多个孔，并且至少一个其它模具构件具有其上的成形表面，其上形成表面，其与另一个模具构件上的第二成形表面共同形成用于 独立挤出第二组丝束。 每个孔口之间的距离保持恒定，并且第二组股线在低于该孔与聚合物供应物连通的点处挤出。 成形表面和孔口相对于彼此布置成使得至少一组股线被强制地推向另一组，以使两组股线在挤出之后被焊接在一起。

    Method for producing a tubular net product
    3.
    发明授权
    Method for producing a tubular net product 失效
    制造管网产品的方法

    公开(公告)号：US3725518A

    公开(公告)日：1973-04-03

    申请号：US3725518D

    申请日：1970-09-29

    Applicant: CONWED CORP

    Inventor： GAFFNEY B

    IPC: B29C47/12 ,  B29D7/24 ,  B29D9/08 ,  B32B5/16

    CPC classification number: B29C47/0033 ,  B29C47/0026 ,  B29C47/22 ,  B29C47/30 ,  B29L2028/00

    Abstract: A method is provided for producing a polymer product by extruding a tubular net and applying a finely divided material to the net to form a new product. In one embodiment the finely divided material may at least partially block the openings of the net. When the openings are partially blocked, the product may be biaxially oriented by applying a pressure differential between the interior and the exterior of the product immediately after extrusion. The pressure differential is maintained by the partial blockage of the openings in the extruding net to permanently stretch and orient the net.

    Abstract translation: 提供了一种通过挤出管状网并将精细分散的材料施加到网上以形成新产品来生产聚合物产品的方法。 在一个实施例中，细碎的材料可以至少部分地阻挡网的开口。 当开口被部分阻塞时，产品可以在挤出后立即在产品的内部和外部之间施加压差来进行双轴取向。 通过挤压网中的开口的部分阻塞来保持压差，以永久地拉伸和定向网。

    Method for the extrusion of plastic net and netlike structures
    9.
    发明授权
    Method for the extrusion of plastic net and netlike structures 失效
    用于挤压塑料网和网状结构的方法

    公开(公告)号：US3700521A

    公开(公告)日：1972-10-24

    申请号：US3700521D

    申请日：1969-11-10

    Applicant: CONWED CORP

    Inventor： GAFFNEY BERNARD J

    IPC: B29C47/12 ,  D04H3/16

    CPC classification number: B29C47/122 ,  B29C47/0014 ,  B29C47/0021 ,  B29C47/0026 ,  B29C47/0028 ,  B29C47/003 ,  B29C47/0033 ,  B29L2028/00 ,  Y10S264/81

    Abstract: An improved extrusion apparatus and method for the extrusion of plastic net and netlike structures is provided. The apparatus is comprised of a plurality of die members at least one of which reciprocates in a vertical direction. One of the die members has a plurality of orifices therein for the extrusion of a first group of strands and at least one other die member has a forming surface thereon which coacts with a second forming surface on another die member to form a variable opening for the independent extrusion of a second group of strands. The distance between each orifice is maintained constant and the second group of strands is extruded at a point below that at which the orifices communicate with a polymer supply. The forming surfaces and orifices are so arranged relative to each other that at least one group of strands is forcefully urged toward the other group to cause the two groups of strands to weld together subsequent to extrusion.

    Bundle-wrapping apparatus
    10.
    发明授权
    Bundle-wrapping apparatus 失效
    包装装置

    公开(公告)号：US3629991A

    公开(公告)日：1971-12-28

    申请号：US3629991D

    申请日：1969-10-02

    Applicant: CONWED CORP

    Inventor： SUNDIN GEORGE H

    IPC: B65B11/10 ,  B65B49/08 ,  B65B49/16

    CPC classification number: B65B11/10 ,  B65B49/08

    Abstract: A bundle-wrapping device is disclosed for wrapping paper about a bundle moving along a conveyor in the direction of movement of the bundle. The wrapping roller for wrapping the paper about the bundle is activated directly by the bundle moving along the conveyor.

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