Page 45 - Plastics News August 2021
P. 45

PRoDUCT NEwS





          DREYPLAS  To  Showcase  Innovative                                     Oerlikon  HRS  Flow

          Application At FAKUMA                                                  Has Developed A

                                                                                 Innovative Mechanical
                                                                                 Stroke Regulator



                                                                                      erlikon HRSflow has developed
                                                                                 Oa Mechanical Stroke Regulator
                                                                                 (MSR) for hydraulic driven valve gate
                                                                                 systems that makes it easy to individually
                                                                                 preset the opening positions of the pins
                                                                                 in hot runner systems. Via a graduate
                                                                                 scale adjusting screw the user specifies
                                                                                 the individual oil volume, which the
                                                                                 valve gate system then uses to bring
                                                                                 the needles into the intended positions.
                                                                                 In this way, the pressure drop for each
             lastics distributor DREYPLAS will  the reduced molecular weight, Lubmer
          Pshowcase innovative application  offers, with smooth friction partners   nozzle can be set independently, and
          possibilities for the ultra-high-molecular- such as steel,equally good tribological   the pressure distribution during the
          weight  polyethylene  (UHMWPE)  properties as components made of a     packaging phase can be controlled.
          LUBMER™ from Mitsui Chemicals  sintered semi-finished product. This and   OerlikonHRSflow supplies its new
          at Fakuma this year. Compared with  its recyclability in the polyolefin stream   MSR ready-to-install on all of  the
          conventional  sintered  semi-finished  make it in many applications a sustainable   company's existing hydraulic cylinder
          products, this offers possibilities  alternative to engineering plastics such   series  equipped  with  electrovalves.
          for  considerable  cost  savings in  the  PPS, POM, PA or PBT. Lubmercan   Installation can be limited to individual
          production of  moulded parts and  be  used  in applications at  long-term
          profiles that also boast excellent surface  temperatures down to –200°C,and its
          slip properties. This advantage comes  chemical resistance, heat resistance and
          from the thermoplastic processability  (low-temperature) impact strength are
          by injection moulding and extrusion. In  the same as those of UHMWPE semi-
          this way, it is no problem with Lubmerto  finished products. It complies with all the
          produce parts with narrow tolerances  REACH regulations and is approved to
          and very low depths of roughness. As  FDA and EU10/2011 for food-contact
          a result, the amount of time required  applications.Alongside the basic types,
          is significantly reduced, and the large  namely Lubmer L3000 with the highest
          quantities  of   costly,  non-reusable  flowability, L4000, and L5000, which is   nozzles of a system to save costs. It
          production scrap from the machining  also suitable for extrusion and has the   only takes around 10 minutes and can
          of semi-finished products are no longer  highest abrasion resistance, DREYPLAS   be done without dismantling the mold.
          produced. In current sampling trials at  also markets the higher temperature-  Modifications to the existing hot runner
          customers, Lubmerhas also proved that  resistant Alloy LS4140, which, thanks to   cutout are not required. Combined
          the product is suitable for 3D printing.  its polyamide modification, combines   with OerlikonHRSflow'sFLEXspeed
          The difference between the various  elevated temperature resistance with   system, the speed of the pin can also
          UHMWPE types lies in the length of  good flow properties. Lubmer can be
          the molecule chains. With conventional  used both with hot runner systems and   be adjusted. First users unanimously
          types, they are so long that they cannot  with traditional tunnel gates. The light   confirm the very good suitability of the
          be melted but have to be sintered into  and opaque intrinsic colour facilitates the   new MSR for balancing the melt flow
          the semi-finished products. Despite  use of colour masterbatches.      in cascade molding and thus avoiding
                                                                                 surface defects by simple means.


 44  PLASTICS NEWS  AUGUST 2021                 45   PLASTICS NEWS  AUGUST 2021
   40   41   42   43   44   45   46   47   48   49   50