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Inline Granulation of Stretch Film Jordan Bellomo Victor Castro Stephen Koellhoffer Zachary Magnone Matthew Manzione Precision AirConvey Team 5.

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Presentation on theme: "Inline Granulation of Stretch Film Jordan Bellomo Victor Castro Stephen Koellhoffer Zachary Magnone Matthew Manzione Precision AirConvey Team 5."— Presentation transcript:

1 Inline Granulation of Stretch Film Jordan Bellomo Victor Castro Stephen Koellhoffer Zachary Magnone Matthew Manzione Precision AirConvey Team 5

2 Outline Problem Definition Current System Concept Selection Detailed Design FabricationConstruction Test Set Up / Testing Path Forward

3 Problem Definition System Function Remove, Reprocess, Recycle Stretch Film Remove, Reprocess, Recycle Stretch Film Proposed Problem Competition has a similar, but more efficient system Competition has a similar, but more efficient system Uses less machinery Converts ribbon directly to fluff, with no intermediate steps PAC is in danger of losing valued customers PAC is in danger of losing valued customers

4 Current System

5 Concept Goals Reduce amount of machinery Eliminate initial cutter Eliminate initial cutter Reduce to one fan Reduce to one fan Reduce system cost Manufacturing cost Manufacturing cost Operating cost Operating cost Feasible to manufacture

6 Best Concept Features Diverts some air away from material SimpleAdjustable Easy to implement Based on existing technology

7 Concept Refinement Several Feasible Ideas Vertical Inlet, Cylindrical Screen Vertical Inlet, Cylindrical Screen Vertical Inlet, Slanted Screen Vertical Inlet, Slanted Screen Vertical Inlet, Dual Sided Slanted Screen Vertical Inlet, Dual Sided Slanted Screen

8 Concept Refinement Best Concept Cylindrical enclosure, conical screen Cylindrical enclosure, conical screen Pressure membrane distributes airflow Pressure membrane distributes airflow Material and some air flow OUT Flow restriction membrane Conical screen, 50% open area Low pressure Zone Separated air OUT 100% Air and Material IN

9 Detailed Design

10 Dimensional justification Used PACs existing screen separator as a starting point for our design Used PACs existing screen separator as a starting point for our design Maintained same open area of screen Maintained same open area of screen Used approximately same screen angle Used approximately same screen angle

11 Fabrication Created detailed design of separator Sent drawings to PACs fabricator Received finished Prototype

12 Construction Attached all system components

13 Test Set Up Victor

14 Testing Measurements Taken: Target Values Pressure: Total Drop 25 in. H 2 O Pressure: Total Drop 25 in. H 2 O Air Velocity: ~6500 ft/min. Air Velocity: ~6500 ft/min. Air Pulled Through Grinder: 1000 cfm Air Pulled Through Grinder: 1000 cfm Fan Power: 60 Hz Fan Power: 60 Hz Bulk Density of End Fluff: 4-7 lb/ft 3 Bulk Density of End Fluff: 4-7 lb/ft 3 Material Velocity: ~2000 ft/min. Material Velocity: ~2000 ft/min.

15 Testing Concept Validation Diversion of air was necessary Diversion of air was necessary Theoretical calculations match experimental results Diverting some airflow Diverting some airflow Increased system efficiency Reduced fan speed Reduced fan speed Increased airflow at inlet Increased airflow at inlet Pressure membrane was not critical Pressure membrane was not critical Conical screen provided enough of a restriction

16 Testing Granulation Success: The Rise and Fall of Stretch Film

17 Path Forward Compile data CD with all relevant project data for PAC Longer length tests need to be conducted Install access panel for cleaning purposes Experiment with different conical screens May be able to further increase system efficiency May be able to further increase system efficiency

18 Summary Problem Definition Current System Concept Selection Detailed Design FabricationConstruction Test Set Up / Testing Path Forward

19 Questions ?


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