A method for producing endless abrasive articles (100) includes providing a mandrel coil (200), which comprises a first complete turn (B0.sub.A) formed of an endless mandrel belt (B0), feeding the endless mandrel belt (B0) to an input end (IN0) of the mandrel coil (200) and unwinding the mandrel belt (B0) from an output end (OUT0) of the mandrel coil (200) so as to move the surface of the first complete turn (B0.sub.A) of the mandrel coil (200), forming a laminated sleeve (SLEEVE1) by feeding a first strip (S1) on the moving surface of the first complete turn (B0.sub.A) of the mandrel coil (200), and forming an endless abrasive article (100) by cutting the laminated sleeve (SLEEVE1).

A method for producing endless abrasive articles (100) includes providing a mandrel coil (200), which comprises a first complete turn (B0.sub.A) formed of an endless mandrel belt (B0), feeding the endless mandrel belt (B0) to an input end (IN0) of the mandrel coil (200) and unwinding the mandrel belt (B0) from an output end (OUT0) of the mandrel coil (200) so as to move the surface of the first complete turn (B0.sub.A) of the mandrel coil (200), forming a laminated sleeve (SLEEVE1) by feeding a first strip (S1) on the moving surface of the first complete turn (B0.sub.A) of the mandrel coil (200), and forming an endless abrasive article (100) by cutting the laminated sleeve (SLEEVE1).

A method for producing endless abrasive articles (100) comprises: —providing a mandrel coil (200), which comprises a first complete turn (BO.sub.A) formed of an endless mandrel belt (BO), —feeding the endless mandrel belt (BO) to an input end (INO) of the mandrel coil (200) and unwinding the mandrel belt (B0) from an output end (OUT0) of the mandrel coil (200) so as to move the surface of the first complete turn (BO.sub.A) of the mandrel coil (200), —forming a laminated sleeve (SLEEVE1) by feeding a first strip (S1) on the moving surface of the first complete turn (BO.sub.A) of the mandrel coil (200), and—forming an endless abrasive article (100) by cutting the laminated sleeve (SLEEVE1).

A method for producing endless abrasive articles (100) comprises: —providing a mandrel coil (200), which comprises a first complete turn (BO.sub.A) formed of an endless mandrel belt (BO), —feeding the endless mandrel belt (BO) to an input end (INO) of the mandrel coil (200) and unwinding the mandrel belt (B0) from an output end (OUT0) of the mandrel coil (200) so as to move the surface of the first complete turn (BO.sub.A) of the mandrel coil (200), —forming a laminated sleeve (SLEEVE1) by feeding a first strip (S1) on the moving surface of the first complete turn (BO.sub.A) of the mandrel coil (200), and—forming an endless abrasive article (100) by cutting the laminated sleeve (SLEEVE1).

The invention embodies an apparatus for producing resin tubes, the apparatus having a hollow supporting structure, wherein an endless carrier strip is windable around the outside of the supporting structure in a plurality of adjacent windings to form a mould.

The invention embodies an apparatus for producing resin tubes, the apparatus having a hollow supporting structure, wherein an endless carrier strip is windable around the outside of the supporting structure in a plurality of adjacent windings to form a mould.

A method for producing endless abrasive articles (100) comprises: providing a mandrel coil (200), which comprises a first complete turn (BO.sub.A) formed of an endless mandrel belt (BO), feeding the endless mandrel belt (BO) to an input end (INO) of the mandrel coil (200) and unwinding the mandrel belt (B0) from an output end (OUT0) of the mandrel coil (200) so as to move the surface of the first complete turn (BO.sub.A) of the mandrel coil (200), forming a laminated sleeve (SLEEVE1) by feeding a first strip (S1) on the moving surface of the first complete turn (BO.sub.A) of the mandrel coil (200), and forming an endless abrasive article (100) by cutting the laminated sleeve (SLEEVE1).

A method for producing endless abrasive articles (100) comprises: providing a mandrel coil (200), which comprises a first complete turn (BO.sub.A) formed of an endless mandrel belt (BO), feeding the endless mandrel belt (BO) to an input end (INO) of the mandrel coil (200) and unwinding the mandrel belt (B0) from an output end (OUT0) of the mandrel coil (200) so as to move the surface of the first complete turn (BO.sub.A) of the mandrel coil (200), forming a laminated sleeve (SLEEVE1) by feeding a first strip (S1) on the moving surface of the first complete turn (BO.sub.A) of the mandrel coil (200), and forming an endless abrasive article (100) by cutting the laminated sleeve (SLEEVE1).

A method for producing endless abrasive articles (100) includes providing a mandrel coil (200), which comprises a first complete turn (B0.sub.A) formed of an endless mandrel belt (B0), feeding the endless mandrel belt (B0) to an input end (IN0) of the mandrel coil (200) and unwinding the mandrel belt (B0) from an output end (OUT0) of the mandrel coil (200) so as to move the surface of the first complete turn (B0.sub.A) of the mandrel coil (200), forming a laminated sleeve (SLEEVE1) by feeding a first strip (S1) on the moving surface of the first complete turn (B0.sub.A) of the mandrel coil (200), and forming an endless abrasive article (100) by cutting the laminated sleeve (SLEEVE1).

A method for producing endless abrasive articles (100) includes providing a mandrel coil (200), which comprises a first complete turn (B0.sub.A) formed of an endless mandrel belt (B0), feeding the endless mandrel belt (B0) to an input end (IN0) of the mandrel coil (200) and unwinding the mandrel belt (B0) from an output end (OUT0) of the mandrel coil (200) so as to move the surface of the first complete turn (B0.sub.A) of the mandrel coil (200), forming a laminated sleeve (SLEEVE1) by feeding a first strip (S1) on the moving surface of the first complete turn (B0.sub.A) of the mandrel coil (200), and forming an endless abrasive article (100) by cutting the laminated sleeve (SLEEVE1).