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    Method for the extrusion of plastic net and netlike structures
    2.
    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
    3.
    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.

    Spring cushion structures
    4.
    发明授权
    Spring cushion structures 失效
    弹簧衬垫结构

    公开(公告)号：US3576040A

    公开(公告)日：1971-04-27

    申请号：US3576040D

    申请日：1968-10-21

    Applicant: CONWED CORP

    Inventor： LARSEN RONALD L

    IPC: A47C27/045 ,  A61F13/18

    CPC classification number: A47C27/0453

    Abstract: An adhesive plastic net is used over a spring foundation both as a spring insulator and as a spring positioner, being adhered to the springs by the adhesive material of the net itself.

    Spring insulator for wire spring cushioning structures such as mattresses
    10.
    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。

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