초록 ▼

A method of sealing a polymeric lining of a manhole and the sewer lines communicating with the manhole which comprises forming insitu an integral substantially continuous monolithic polymeric coating or lining on the interior surface of the manhole adhered to the interior surface and substantially s

A method of sealing a polymeric lining of a manhole and the sewer lines communicating with the manhole which comprises forming insitu an integral substantially continuous monolithic polymeric coating or lining on the interior surface of the manhole adhered to the interior surface and substantially simultaneously forming a generally tube-shaped polymeric sealing member coaxially aligned with the manhole opening having an interior diameter generally equal to the interior surface of the manhole opening which is integral and continuous with the polymeric lining of the manhole preferably by spraying the interior surface of the manhole with a polymeric material having an isocyanate-terminated compound, most preferably a polyurea, then substantially simultaneously forming the tube-shaped polymeric sealing member of the same material as the manhole lining. Following curing of the polymeric manhole coating and the sealing member, the method includes inserting a tubular liner through the line communicating with the manhole into the tube-shaped sealing member having an uncured polymer on its exterior surface which is chemically compatible with the polymeric sealing member. The tubular sealing member is preferably formed by inserting a generally cylindrical form into the manhole opening which extends into the manhole, then applying the polymeric coating material sprayed on the interior surface onto the cylindrical form, thereby forming a generally tube-shaped member which is integral and continuous with the manhole lining.

대표청구항 ▼

[ I claim:] [1.] A method of sealing a manhole and a line communicating with said manhole through an opening in said manhole, comprising the following steps:forming in situ an integral substantially continuous monolithic polymeric coating on the interior surface of said manhole adhered to said inter

[ I claim:] [1.] A method of sealing a manhole and a line communicating with said manhole through an opening in said manhole, comprising the following steps:forming in situ an integral substantially continuous monolithic polymeric coating on the interior surface of said manhole adhered to said interior surface;forming a generally tube-shaped polymeric sealing member coaxially aligned with said manhole opening having an internal surface with a diameter generally equal to the internal diameter of said manhole opening integral and continuous with said polymeric manhole coating;curing said polymeric manhole coating and said tube-shaped sealing member;inserting a tubular liner through said line and into said cured tube-shaped sealing member, the tubular liner having an uncured polymer on its exterior surface chemically compatible with said tube-shaped polymeric sealing member; andcuring said polymer on said tubular liner and permanently chemically bonding said liner exterior surface to said sealing member internal surface thereby sealing the communication between said line and said manhole.