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    RESIN SHEET AND RESIN MOLDING
    3.
    发明公开
    RESIN SHEET AND RESIN MOLDING 审中-公开

    公开(公告)号：EP4163079A1

    公开(公告)日：2023-04-12

    申请号：EP22200296.6

    申请日：2022-10-07

    申请人： Maxell, Ltd.

    发明人： YUSA, Atsushi ,  MIZUTANI, Kei ,  YAMAMOTO, Satoshi ,  GOTO, Toshiharu ,  TANIGUCHI, Satoki

    IPC分类号： B29C44/04 ,  B29C44/06 ,  B29C44/14 ,  B29C44/24 ,  B29C44/32 ,  B29C44/56 ,  B29C44/22 ,  B29C44/50 ,  B29L7/00

    摘要： A resin sheet is provided that provide both light-weight properties and mechanical strength using a thermoplastic resin with high deflection temperature under load. The resin sheet 1 is formed from a thermoplastic resin, including: a core layer 2, the core layer being a foam resin layer; and skin layers 3 located outward of the core layer 2 as determined along the thickness direction, the core and skin layers forming a continuity. The core layer 2 includes a region A1 and regions A2 each located between the region A1 and the associated skin layer 3. The regions A2 has a lower average porosity than the region A1, said average porosity being lower than 50 %. The thermoplastic resin has a deflection temperature under load not lower than 90 °C. The resin sheet has a thickness of 1 to 40 mm. Each skin layer has a thickness of 5 to 50 % of the thickness of the resin sheet. Thus, in a thermoplastic resin having a deflection temperature under load not lower than 90 °C, the thickness of the resin sheet and the thickness of the skin layers are appropriate, thereby providing both light-weight properties and strength.

    LINE AND METHOD FOR PRODUCING SLATS FOR ROLLER SHUTTERS
    4.
    发明公开
    LINE AND METHOD FOR PRODUCING SLATS FOR ROLLER SHUTTERS 审中-公开

    公开(公告)号：EP4082744A1

    公开(公告)日：2022-11-02

    申请号：EP22162736.7

    申请日：2022-03-17

    申请人： Dallan S.p.A.

    发明人： DALLAN, Andrea

    IPC分类号： B29C44/18 ,  B29C44/32 ,  B29C44/60 ,  E06B9/00 ,  B29K75/00 ,  B29L31/00

    摘要： The present invention relates to a line (1) for producing slats for roller shutters, comprising: - a profiling machine (3) suitable to form a closed, hollow, box section profile from a metal strip; - a foaming machine (4), integrated in the profiling machine (3) and suitable to dose into the partially open, hollow, box section profile (P1) a predetermined quantity of a polyol/isocyanate mixture in a unit of time; and - a polymerization bench (5), which is placed downstream of the profiling machine (3) to obtain a foamed, closed, hollow, box section profile (P2). The line comprises: - a thickness measurer (10; 15) placed downstream of said polymerization bench (5) and suitable to measure in line the thickness (S) of a predetermined central portion (C) of the profile (P2); and - a control system (20) programmed to adjust the amount of polyol/isocyanate mixture depending on the thickness detected by the thickness measurer according to predetermined adjustment logics.