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14 条记录 (耗时 0.017 秒)

    ULTRASONIC WELDING SYSTEM
    3.
    发明公开
    ULTRASONIC WELDING SYSTEM 审中-公开

    公开(公告)号：EP4357112A1

    公开(公告)日：2024-04-24

    申请号：EP23195166.6

    申请日：2023-09-04

    申请人： GDM S.p.A.

    发明人： PIANTONI, Matteo ,  ZAVALLONI, Alessandro

    IPC分类号： B29C65/08 ,  A61F13/15 ,  B29L31/48

    CPC分类号： B29L2031/487820130101 ,  B29C66/71 ,  B29C65/7885 ,  B29C66/1122 ,  B29C66/431 ,  B29C65/087 ,  B29C65/7894 ,  B29C66/83511 ,  B29C66/9511 ,  B29C66/8748 ,  A61F13/15739 ,  B29C66/8324 ,  B29C66/8322 ,  B29C66/81465 ,  B29C66/9674 ,  B29C66/9513

    摘要： Ultrasonic welding system (1) and method for making welds on a strip (2) made of polymeric material. The welding system (1) comprises a supporting structure (20), N welding equipment (30) mounted on said supporting structure (20) and a processor (40). The N welding equipment (30) each comprise a pair of welding heads (31) made of a sonotrode (32), comprising a sonotrode welding surface (32'), and an anvil (34), comprising an anvil welding surface (34'). In each of the N welding equipment (30), one movable welding head between the two welding heads (32, 34) of each pair of welding heads (31) is movable with respect to the other welding head (32) of the pair (31) between a non-operating position and a welding position. Each of the N welding equipment (30) comprises a control member (36) operatively associated with the respective sonotrode (32), said control member (36) being configured to vibrate the sonotrode (32) at a nominal ultrasonic vibration frequency and to detect a current value of the vibration frequency of the sonotrode (32). Each of the N welding equipment (30) comprises a vibration sensor (38) which is mounted on the movable welding head of the respective pair of welding heads (31). The processor is configured to monitor, for each pair of welding heads (31), the alignment condition between the sonotrode welding surface (32') and the anvil welding surface (34') by cooperating with the respective control member (36) and with the respective vibration sensor (38).

    METHOD FOR RECYCLING POST-CONSUMER ABSORBENT ARTICLE
    7.
    发明公开
    METHOD FOR RECYCLING POST-CONSUMER ABSORBENT ARTICLE 审中-公开

    公开(公告)号：EP4417388A1

    公开(公告)日：2024-08-21

    申请号：EP23305218.2

    申请日：2023-02-20

    申请人： Bostik SA

    发明人： BELLINI, Clement ,  LAFERTE, Olivier

    IPC分类号： B29B17/02 ,  A61F13/00 ,  A61L15/16

    CPC分类号： B29B17/02 ,  B29B2017/029620130101 ,  B29L2009/0020130101 ,  B29L2031/487820130101 ,  A61F13/49

    摘要： The present invention relates to a method for recovering plastic material(s) from a post-consumer disposable absorbent article comprising a topsheet, a backsheet, an absorbent core, a hot melt adhesive composition H, wherein at least one of the topsheet and the backsheet comprises at least one plastic material,
    wherein the hot melt adhesive composition H comprises:
    ∘ at least one polymer P selected from the group consisting of polyolefins, thermoplastic block copolymers of a vinyl-based aromatic hydrocarbon and a conjugated diene compound, and mixtures thereof;
    ∘ at least one tackifier T comprising at least one ester group or carboxylic acid group;

    the method being characterized in that it comprises:
    - a step i) of providing a post-consumer disposable absorbent article,
    - a step ii) of immersing the post-consumer disposable absorbent article in an alkaline aqueous solution in conditions sufficient to obtain debonding of plastic material(s),
    - a step iii) of separation and recovering of plastic material(s) from the medium.