Method and apparatus for continuously preparing crosslinked,...

B - Operations – Transporting – 29 – D

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

B29D 7/01 (2006.01) B32B 27/26 (2006.01) C08J 3/24 (2006.01) C08J 5/18 (2006.01)

Patent

CA 2621457

A method and system for continuously preparing a crosslinked, solvent-cast film are disclosed. The method includes continuously providing a pressurized stream of polymer solution, continuously combining a fluid stream including a crosslinking agent with the pressurized stream of polymer solution, mixing the combination of polymer solution and fluid stream in-line, continuously applying the resulting mixture to a continuously moving surface, and then evaporating solvent from the mixture to form a polymeric film. The system includes: (i) a continuous polymer solution casting system, including a first pump in fluid communication with a supply of polymer solution, a casting die for continuously depositing polymer solution disposed in proximity to a moving casting surface, and a first conduit providing a flow path for the polymer solution from the pump to the casting die; (ii) a secondary liquid component injection system, including a second reservoir for holding a supply of a secondary liquid component including a crosslinking agent, a variable-speed second pump in fluid communication with the supply of secondary liquid component, a needle valve, and a second conduit providing a flow path for the secondary liquid component from the reservoir, through the second pump, then through the needle valve, and to an outlet; (iii) a conduit junction connecting the outlet of the secondary liquid component injection system to the first conduit of the continuous polymer solution casting system, the junction disposed downstream of the first pump; and (iv) an in-line mixer disposed between the casting die and the conduit junction.

L~invention concerne un procédé et un système d~élaboration en continu d'un film réticulé, coulé en solution. Le procédé consiste à injecter en continu un courant pressurisé de solution polymère, à combiner en continu un courant de fluide comprenant un agent de réticulation avec le courant pressurisé de solution polymère, à mélanger la combinaison de la solution polymère et du courant de fluide en ligne, à appliquer en continu le mélange résultant à une surface mobile en continu, puis à évaporer le solvant du mélange pour constituer un film polymère. Le système comporte : (i) un système de coulage de solution polymère en continu, comprenant une première pompe en communication fluide avec une alimentation de solution polymère, une filière de coulage pour la dépose en continu d~une solution polymère disposée à proximité d~une surface de coulage mobile, et un premier conduit constituant un circuit d~écoulement pour la solution polymère de la pompe à la filière de coulage ; (ii) un système d~injection de composant liquide secondaire, comprenant un second réservoir permettant de renfermer une alimentation de composant liquide secondaire contenant un agent de réticulation, une seconde pompe à vitesse variable en communication fluide avec l~alimentation de composant liquide secondaire, une valve à pointeau, et un second conduit constituant un circuit d'écoulement pour le composant liquide secondaire provenant du réservoir, à travers la seconde pompe, puis à travers la valve à pointeau, et vers une sortie ; (iii) une jonction à conduit reliant la sortie du système d~injection de composant liquide secondaire au premier conduit du système de coulage de solution polymère en continu, la jonction étant disposée en aval de la première pompe ; et (iv) un mélangeur en ligne disposé entre la filière de coulage et la jonction à conduit.

LandOfFree

Say what you really think

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

Rating

Method and apparatus for continuously preparing crosslinked,... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method and apparatus for continuously preparing crosslinked,..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for continuously preparing crosslinked,... will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFCA-PAI-O-1850608

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