REDESIGNING OF THE MECHANICAL MOVEMENT OF A HAND-WOUND WATCH

    公开(公告)号:EP3770700A1

    公开(公告)日:2021-01-27

    申请号:EP20187622.4

    申请日:2020-07-24

    摘要: A method for manufacturing components having a light weight for achieving the mechanical movement of a hand-wound watch, comprising the steps of:
    - designing the components so that a single component includes the functionalities and features of several components, so that the total number of components is smaller than the present mechanical movements;
    - manufacturing the components with additive manufacturing technology so that a single component comprises several components already partially assembled together, so that the post-assembly step requires less time; and
    - assembling together the aforesaid components obtained via additive manufacturing to obtain the mechanism of a hand-wound watch.

    METHOD TO JOIN MATERIALS WITH A DIFFERENT MELTING TEMPERATURE

    公开(公告)号:EP3659736A1

    公开(公告)日:2020-06-03

    申请号:EP19211938.6

    申请日:2019-11-27

    IPC分类号: B23K11/11 B23K11/20 B23K26/38

    摘要: A method to mechanically join two conductor materials with a different melting temperature. The method comprises, in succession:
    - a contact step, during which a surface of a material with a higher melting temperature, where there are grooves, is arranged in contact with a surface of a material with a lower melting temperature, and
    - a joining step, during which the two materials are subjected to a coupling pressure and, at the same time, are crossed through by a current at the plurality of grooves until the grooves are filled with said material with a lower melting temperature.;
    said grooves having an undercut profile.

    METHOD FOR PRODUCING CELLULOSE NANOCRYSTALS (CNCS)

    公开(公告)号:EP3608342A1

    公开(公告)日:2020-02-12

    申请号:EP19000360.8

    申请日:2019-08-02

    IPC分类号: C08B15/02 C08H8/00

    摘要: A method is proposed for producing cellulose nanocrystals (CNCs) comprising:
    i. a step of feeding a cellulosic raw material, such as native vegetable fibres or vegetable biomass materials or by-products of the textile, milling industries, and of paper,
    ii. a step of putting the cellulosic raw material in contact with an oxidative acid component at high temperature to produce cellulose nanocrystals (CNCs) and
    iii. a step of recovery of the cellulose nanocrystals obtained,
    in which method there is provided a hydrolytic-oxidative microwave-assisted treatment, with closed microwave reactor under pressurised conditions.
    The nanocrystals obtained can advantageously form pourable suspensions, for example as a thin and functional cladding on the activated surface of flexible packaging materials.