System and method for continuously manufacturing cured membranes
AssigneeHolcim Technology Ltd
InventorHao WANG
Life of this patent
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Abstract
A process for the continuous production of cured rubber membrane, the process comprising (i) preparing a continuous stream of curable rubber composition; (ii) forming the continuous stream of curable rubber composition into a continuous green-rubber extrudate; (iii) curing the continuous green-rubber extrudate to form a continuous cured membrane; and (iv) fabricating the continuous cured membrane into rolls of cured membrane, where the curable rubber composition is characterized by at least one of a t90 at 190° C. of from about 1 to about 12 minutes and a T5 at 135° C. of from about 5 to about 20 minutes.
Claims23
A process for the continuous production of cured rubber membrane, the process comprising:
- (i) preparing a continuous stream of curable rubber composition;
- (ii) forming the continuous stream of curable rubber composition into a continuous green-rubber extrudate;
- (iii) curing the continuous green-rubber extrudate to form a continuous cured membrane;
- and
- (iv) fabricating the continuous cured membrane into rolls of cured membrane, where the curable rubber composition is characterized by at least one of a too at 190° C. of from about 1 to about 12 minutes and a T5 at 135° C. of from about 5 to about 20 minutes.
(canceled)
(canceled)
A system for continuously producing a curable rubber composition, the system comprising:
- (i) a mixing and conveying device including first and second material inlets;
- (ii) a conveying device downstream of said mixing and conveying device;
- and
- (iii) a conduit fluidly connecting said mixing and conveying device to said conveying device, said conduit including at least one outlet adapted to vent volatiles from the conduit.
A method for preparing a curable rubber sheet, the method comprising:
- (i) preparing a curable rubber composition within a mixing and conveying device;
- (ii) transferring the curable rubber composition to a conduit;
- (iii) removing volatiles from the curable rubber composition while the curable rubber composition is contained within said conduit;
- (iv) transferring the curable rubber composite from the conduit to a conveying device;
- and
- (v) extruding the curable rubber composition into an extrudate from the conveying device.
(canceled)
Dependencies are inferred from the claim text.