空气在离体和整体成型室的管理.ppt

1、Air Management in Isolated and Integrated Forming Chambers,Meltblowing and Spinbonding,Overview,Mathematical analysis of pressure drop and velocity behavior for multi layer nonwoven structures Forming Belt analysis Meltblown model Spunbond model Web Forming Forming Temperature Management Air Managem

2、ent System Overview,Belt Specifications,Vendor: Albany International Style: Electro Tech SN 80D Air Perm: 600 cfm per ft2 0.5 in wg Caliper: 0.056” thick Open Area: 0% Actual area at a given point in the thickness of the fabric that is open to flow Mesh x Count: 78 (md) x 34 (cd),Meltblown Model,Spu

3、nbond Model,Meltblown Suction/Forming Box,Shown is Meltblown Suction / Forming box,Note: small slot opening under the belt,Box within a box design for air balance,Velocity Vectors,Pressure Contours,Hold-Down Section,Shown is Hold down system HDS,Meltblown Forming and Hold-Down Section,Air Management

4、 System,Shown is Forming Zone with Upstream and Downstream Waste Air Sections,Meltblown Model,Spunbond Model,Drawjet Air PlenumNote: Equal piping lengths,Spunbond Compaction Roll (isolates entrained air),Spunbond Hold Down Section,MB Forming Temperature Management,Injection of Quench air 11 Degrees C Lowers Fiber / Air Mix temperature Quench is from both upstream and downstream Enables use of higher polymer temperatures thus lowering the polymer viscosity and creating finer fibers.,Complete Air Manage