Apparatus and process for filtering molten polymer

D - Textiles – Paper – 01 – D

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

182/124, 18/563,

D01D 1/10 (2006.01) B01D 39/20 (2006.01) B29C 47/68 (2006.01) C04B 35/10 (2006.01)

Patent

CA 1186243

ABSTRACT OF THE DISCLOSURE Sintered bauxite particles having defined physical and chemical properties are disclosed as being surprisingly eminently suitable as filtration media for molten polymer, such as polyester polymer. Broadly, the particles have a roundness of at least 0.8, and an API standard mesh size of at least 12; in addition, such particles inherently contain significant amounts of ferric oxide. It is preferred that the sintered bauxite particles (i) be microcrystalline, and therefore sintered under critical conditions; (ii) exhibit high crush strength; (iii) be compaction and fracture resistant up to pressures of 6000 psi by defined permeability tests; and (iv) have an API standard mesh size not greater than 70. Also, the sintered particles may have a microporous internal structure and surface. Also disclosed is an improved annular melt-spinning pack, including a bed of sintered bauxite particles, and means for preventing the bed of free-flowing particles from being deformed during use of the pack.

406928

LandOfFree

Say what you really think

Search LandOfFree.com for Canadian inventors and patents. Rate them and share your experience with other people.

Rating

Apparatus and process for filtering molten polymer does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Apparatus and process for filtering molten polymer, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus and process for filtering molten polymer will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFCA-PAI-O-1266956

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.