Ron Zhao the R&D Director of Biax Fiberfilm Corporation has developed a 15 inch wide melt-blowing head with 12 rows of holes giving 200 holes per inch compared with the 35 holes/inch of conventional heads.
Spinnerette Cross Section 
Without a water spray the melt-blown cellulose is over self-bonded and over brittle
Spraying water onto the web improved matters...
...but spraying the filaments before they formed a web was better.
Best of all was to spray water from nozzles in the spinnerette itself, but the resulting full-scale meltblow head would be a complex piece of engineering with thousands of easily damaged "hollow needles" protruding from the face.
No comments:
Post a Comment