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Method and apparatus for generating foamed thermoplastic materials 원문보기

IPC분류정보
국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판)
  • B29D-027/00
출원번호 US-0319403 (1981-11-09)
발명자 / 주소
  • Winstead Thomas W. (Baltimore MD)
출원인 / 주소
  • Maryland Cup Corporation (Owings Mills MD 02)
인용정보 피인용 횟수 : 32  인용 특허 : 7

초록

A method and apparatus for entraining gas as a blowing agent in a thermoplastic melt to provide a foamed thermoplastic extrudate wherein an annular sheet-like flow of gas under pressure is impinged on a tubular configuration of melt to entrain the gas in the melt is disclosed. Also disclosed is an i

대표청구항

The method of entraining gas as a blowing agent in a thermoplastic melt to provide foamed thermoplastic extrudate, comprising: providing an extruded flowing mass of thermoplastic melt; constraining the flow of said melt into a tubular configuration over a finite distance; impinging an annular sheet-

이 특허에 인용된 특허 (7)

  1. Shimano Takashi (Ichihara JA) Orimo Katsumi (Ichihara JA) Yamamoto Shoji (Ichihara JA) Azuma Masao (Chiba JA), Apparatus for producing a foamed thermoplastic resin article.
  2. Hunerberg Edward C. (Wilbraham MA), Gas-flow control apparatus for equipment for producing foamed plastic.
  3. Miller John C. (Piscataway NJ) Burnett Archibald L. (Warren NJ) Scarola Leonard S. (Union NJ), Method for the extrusion of thermoplastic material composites.
  4. Brachman Armand E. (Allentown PA), Method of injection molding a structural foamed thermoplastic article having a uniform swirl-free and indent-free surfac.
  5. Schmidtchen Hans-Martin (Osnabrck DEX), Method of making a foamed plastic.
  6. Kreuer Karl D. (Leverkusen DE1) Schulte Klaus (Leverkusen DE1), Process and apparatus for the preparation of a reaction mixture for the production of plastic foams.
  7. Kloker ; Werner ; Bovender ; Franz ; Gromping ; Franz ; Goerden ; Leonha rd ; Niesel ; Harald, Process for manufacturing foamed materials involving contacting a thin unbroken film of liquid resin with a gaseous blo.

이 특허를 인용한 특허 (32)

  1. Sutton, Gerald S.; Kelley, David J., Apparatus and method for pressing an outer wall of pipe.
  2. Goddard, James B.; Kurdziel, John M., Corrugated pipe with outer layer.
  3. Sutton, Gerald S.; Kolbet, Randall A., Defined ratio dual-wall pipe die.
  4. Bosiers, Luc; Salmang-Frohard, Rodolfo, Dynamic mixing pump.
  5. Sutton, Gerald S.; Shaffer, William V.; Kolbet, Randall A., Extrusion die vacuum seals.
  6. Beckwith Robert W., Extrusion system.
  7. Brackman Joseph A. ; Breindel Raymond M. ; Sadinski Robert L., Foam extrusion apparatus.
  8. Suh Nam P. ; Hermann Torsten,DEX, Gear throttle as a nucleation device in a continuous microcellular extrusion system.
  9. Suh Kyung W. ; Shmidt Creston D. ; Imeokparia Daniel D. ; Platt Alan E. ; Wessel Thomas E., High temperature syndiotactic styrene polymer foam.
  10. Suh Kyung W. ; Shmidt Creston D. ; Imeokparia Daniel D. ; Platt Alan E. ; Wessel Thomas E., High temperature syndiotactic styrene polymer foam.
  11. Kolbet, Randall A., In-mold punch apparatus and methods.
  12. Burnham Theodore A. ; Cha Sung W. ; Walat Robert H. ; Kim Roland Y. ; Anderson Jere R. ; Stevenson James F. ; Suh Nam P. ; Pallaver Matthew, Method and apparatus for microcellular polymer extrusion.
  13. Burnham, Theodore A.; Cha, Sung W.; Walat, Robert H.; Kim, Roland Y.; Anderson, Jere R.; Stevenson, James F.; Suh, Nam P.; Pallaver, Matthew, Method and apparatus for microcellular polymer extrusion.
  14. Kumazaki Hiroshi (Numazu JPX), Method of controlling pressurized gas, before and after injecting a molten material, in a mold cavity.
  15. Branger Robert Michael ; Fortier David N., Method of molding cross-linked foamed compositions.
  16. Sutton, Gerald S.; Shaffer, William V.; Goddard, James B.; Kurdziel, John M.; Kelley, David J.; Biesenberger, Jeffrey J., Multi-wall corrugated pipe couplings and methods.
  17. Sutton, Gerald S.; Shaffer, William V.; Goddard, James B.; Kurdziel, John M.; Kelley, David J.; Biesenberger, Jeffrey J., Multi-wall corrugated pipe couplings and methods.
  18. Sutton, Gerald S., Pipe extrusion die flow path apparatus and method.
  19. Sanyasi Graham Ramlu,AUX, Plastics foam and method of manufacturing same.
  20. Gilmer Robin A., Polymeric articles having antistatic properties and methods for their manufacture.
  21. Karabedian James A. (Toledo OH) Blackwelder Maurice W. (Bardstown KY), Polystyrene foam sheet manufacture.
  22. Karabedian James A. ; Blackwelder Maurice W., Polystyrene foam sheet manufacture.
  23. Ladera Sainz, Jesus; Figueras Nadal, Laura, Process and apparatus for producing foam.
  24. Dickson Floyd R.,CAX ; Mallia Lino C., Process for making a vehicle grille guard.
  25. Dickson Floyd R.,CAX ; Mallia Lino C., Structural web automotive grill guard.
  26. Rhoads Timothy W. (Newark OH), Styrenic foam and process therefor.
  27. Miller, Larry M.; Breindel, Raymond M.; Weekley, Mitchell Z.; Cisar, Thomas E., To enhance the thermal insulation of polymeric foam by reducing cell anisotropic ratio and the method for production thereof.
  28. Gehlsen, Mark David; Vall, David Loren; Perman, Craig Allen; Albrecht, Bonnie Weiskopf, Uniform small cell foams and a continuous process for making same.
  29. Gehlsen, Mark David; Vall, David Loren; Perman, Craig Allen; Albrecht, Bonnie Weiskopf, Uniform small cell foams and a continuous process for making same.
  30. Gehlsen, Mark David; Vall, David Loren; Perman, Craig Allen; Albrecht, Bonnie Weiskopf, Uniform small cell foams and a continuous process for making same.
  31. Gehlsen, Mark David; Vall, David Loren; Perman, Craig Allen; Albrecht, Bonnie Weiskopf, Uniform small cell foams and a continuous process for making same.
  32. Mark David Gehlsen ; David Loren Vall ; Craig Allen Perman ; Bonnie Weiskopf Albrecht, Uniform small cell foams and a continuous process for making same.
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