Method for production of expanded polystyrene panels

Details Method for production of expanded polystyrene panels Method for production of expanded polystyrene panels

B - Operations, Transporting

29

C

18/663

B29C 33/30 (2006.01) B29C 47/00 (2006.01)

Patent

CA 1185759

ABSTRACT: "Method for production of expanded po1y- styrene panels" A process for manufacturing expanded polystyrene panels includes the following stages: a) Preparation of pre-expanded panels of polystyre- ne by extrusion and simultaneous injection if propel- lent agent into an extruder fitted with an extrusion die of suitable type and in particular fitted with means allowing for good mixing of the molten polymer with the propellent agent and means allowing for uni- form cooling to the best value if the temperature of the expandable plastic mass before exit from the die. b) Conditioning of said panels at room temperature or at whatever temperature higher than room tempera- ture, provided it is such to prevent the panels from undergoing either dimensional variation or deformation due to internal stress or true expansion. c) Forming of pre-expanded panels into a mould-box by means of heat furnished by convection by a hot fluid the ratio between internal dimensions of the box and measures of pre-expanded panels being such that 60 percent at least of the volumetric increase given to the mass is affected to their average increase in thickness.

406511

Affiliated with

Also associated with

Rating

Method for production of expanded polystyrene panels 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 for production of expanded polystyrene panels, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for production of expanded polystyrene panels will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-1339867