Presentation is loading. Please wait.

Presentation is loading. Please wait.

SABIC Polyethylenes BV Stretching the Limits Marcel van Enckevort SABIC Polyethylenes BV The effect of Extrusion and Casting process variables on Stretch.

Similar presentations


Presentation on theme: "SABIC Polyethylenes BV Stretching the Limits Marcel van Enckevort SABIC Polyethylenes BV The effect of Extrusion and Casting process variables on Stretch."— Presentation transcript:

1 SABIC Polyethylenes BV Stretching the Limits Marcel van Enckevort SABIC Polyethylenes BV The effect of Extrusion and Casting process variables on Stretch Film Performance

2 SABIC Polyethylenes BV 2 Introduction Stretching the... As a converter you can improve your economies of scale by stretching the output and speed to the limits of your cast stretch lines.Limits Equipment Application Resins

3 SABIC Polyethylenes BV 3 Outline Introduction Experimental set-up Approach Results Conclusions Comparison Approach Results Conclusions

4 SABIC Polyethylenes BV 4 Cast Stretch Wrap Film segments Manual Stretch 100 – 150% 40% Market share Automatic Stretch 150 – 250% 48% Market share Power Stretch > 250% 12% Market share Photos: ITW MIMA Stretch Packaging Systems

5 SABIC Polyethylenes BV 5 Cast Stretch Wrap Film Cost Structure Source: SMS Folientechnik GmbH

6 SABIC Polyethylenes BV 6 Facts & Figures Almost 90% of the stretch film demand is in hand wrap and machine wrap applications Maximum pre-stretch level up to 250% More than 80% of your film cost price is determined by the resins End users are looking for the lowest price!

7 SABIC Polyethylenes BV 7 Are you fulfilling your potential? Are you using optimal outputs/speed? Nowadays modern stretch film lines can run at higher speeds (up to 600 m/min) Older stretch film lines can potentially run faster than being done today! Note: speed also determines the end film properties Did you optimise line settings to use the full potential of the resins? Are you using fit for purpose resins?

8 SABIC Polyethylenes BV 8 Approach Butene-based SABIC ® LLDPE 318B (2.8/918) A state-of-art cast stretch film line Real world conditions 3-layer film concept A/B/C with 15% VLDPE in cling layer and 25% trim recycle in the core Experimental design 15 experiments in 2 days Easy adjustable variables

9 SABIC Polyethylenes BV 9 Cast2020: Settings DimensionValue Output> 1000 kg/h Winding speed500 m/min Die gap0.6 mm Film thickness20 µm Layer distribution15/70/15 % Recycle in core layer25% Photo: SMS Folientechnik GmbH

10 SABIC Polyethylenes BV 10 Cast2020: Settings – Cont. VariableRange Melt Temp.250 – 290 °C Chill roll Temp.15 – 25 °C Vacuum box2 – 4 cm H 2 O Photo: SMS Folientechnik GmbH

11 SABIC Polyethylenes BV 11 SABIC ® C 4 -LLDPE Film properties Improved by changing settings: Tear resistance TD with 15% Puncture resistance with 60% Ultimate pre-stretch level with 37% (from 230 to 340%) Not influenced by the settings: Optical properties (Gloss, Haze) Cling Elastic recovery (snap back) Stress retention (bundling force)

12 SABIC Polyethylenes BV 12 Ultimate Pre-stretch level (HighLight Ultimate Pre-stretch level (HighLight)

13 SABIC Polyethylenes BV 13 Real world testing ROBOPAC Rotoplat 705 PVS SettingMaximum Pre-stretch400% Turntable speed 15 rpm Wrapping speed60 m/min Semi-automatic Stretch Wrapper

14 SABIC Polyethylenes BV 14 Real world testing – Cont. Looking for the limits we found several holes and film ruptures! we also found consistent pre-stretch levels up to 400 % BUT(ENE)

15 SABIC Polyethylenes BV 15 Conclusions Apply optimal processing conditions to utilise the potential performance present in your C 4 -LLDPE based films Take advantage of the cost price benefits from maximising the use of C 4 -LLDPE Achieve pre-stretch levels up to 400%!!

16 SABIC Polyethylenes BV 16 Outline Introduction Experimental set-up Approach Results Conclusions Comparison Approach Results Conclusions

17 SABIC Polyethylenes BV 17 What about the SABIC ® C 6 -LLDPE? compared SABIC ® C 6 -LLDPE (and C 4 -LLDPE) with metallocene based-C 6 -LLDPE and with C 8 -LLDPE Cast2020 cast film line 3-layer film concept A/B/C concept with 15% VLLDPE in cling layer and 25% recycle in the core Melt temperature, chill-roll and vacuum box on midpoint settings

18 SABIC Polyethylenes BV 18 Results

19 SABIC Polyethylenes BV 19 Conclusions Utilising C 6 -LLDPE can: Improve relevant film properties (e.g. Tear Resistance, Puncture Resistance and cling) $AV on the cost of VLDPE (up to 50%), using C6-LLDPE in the cling layer! Easily obtain pre-stretch levels of 250% And there is still room for improvement!

20 SABIC Polyethylenes BV 20 Finally Explore the limits of processing traditional C 4 and C 6 based LLDPE resins on your extrusion lines Apply fit for purpose resins in your film structures Enjoy the use of SABIC ® LLDPE…..

21 SABIC Polyethylenes BV 21

22 SABIC Polyethylenes BV 22 Acknowledgement SMS Folientechnik GmbH, Vienna Polychem Laboratory HighLight Industries De Witt ROBOPAC, The Netherlands


Download ppt "SABIC Polyethylenes BV Stretching the Limits Marcel van Enckevort SABIC Polyethylenes BV The effect of Extrusion and Casting process variables on Stretch."

Similar presentations


Ads by Google