Method and apparatus for producing a sewer pipe element

A method for manufacturing a sewage pipe element comprising a plastics lining, wherein the method comprises the following steps:

• providing a mould (102) comprising an outer shell (108) and an inner shell (106), a mould cavity (110) defined between the outer shell (108) and the inner shell (106) defining a cylindrical sewage pipe element which has a receiving portion (150) at one axial end and a plug-in portion (152) at the opposite axial end, an internal cross section dimension (d1) of the receiving portion (150) being greater than or equal to an external cross section dimension (d2) of the plug-in portion (152), in such a way that for axially coupling two adjacent sewage pipe elements the plug-in portion (152) of one sewage pipe element can be inserted so as to fit into the receiving portion (150) of the adjacent sewage pipe element,
• the inner shell (106) being formed from plastics material and comprising a first shell portion (154) which defines the inner wall of the receiving portion (150), comprising a second shell portion (156) which defines the outer wall of the plug-in portion (152), and comprising a third shell portion (158) which defines the inner wall of a pipe portion (154), extending axially between the receiving portion (150) and the plug-in portion (152), of the sewage pipe element;
• introducing a concrete into the mould (102);
• and,
• demoulding the outer mould (108);
• the inner shell (106) remaining connected to the concrete after the concrete sets and forming the plastics lining of the finished sewage pipe element.

A method for manufacturing a sewage pipe element comprising a plastics lining, wherein the method comprises the following steps:

• providing a mould (2) for manufacturing the sewage pipe element, comprising a first sleeve (22) and a plastics element (20);
• introducing a concrete into the mould (2);
• attaching a second sleeve (28);
• and,
• demoulding the sewage pipe element;
• wherein the first sleeve (22) is connected to the plastics element (20) and the plastics element (20) is connected to the second sleeve (28) in a fluid-tight manner in each case, and wherein the first sleeve (22) and the second sleeve (28) forms at least part of the plastics lining.