Patent ID: 7608165

Claim:
A method of forming a multi-layer web in a formation section, comprising the steps of: forming a first partial web on a first wire of a first wire unit with a first pulp suspension jet supplied by a first headbox at a forward end of the first wire unit; forming a second partial web in a second wire unit from a second pulp suspension jet supplied by a second headbox, wherein the second pulp suspension jet is supplied to a jaw defined by a second wire of the second wire unit, and a third wire of the second wire unit, the second wire of the second wire unit and the third wire of the second wire unit forming a two-wire stretch which begins with the jaw, and wherein a forward end of the two-wire stretch is defined where the second wire of the second wire unit, and the third wire of the second wire unit meet; performing non-pulsating dewatering of the second partial web in a first dewatering zone of the two-wire stretch of the second wire unit by moving the second wire of the second wire unit, and the third wire of the second wire unit, in the two-wire stretch over a curved cap of at least one fixed first formation shoe having a leading edge and located at the forward end of the two-wire stretch such that the cap engages one side of the two-wire stretch, and drawing water in an area following after the leading edge of the at least one fixed first formation shoe with under-pressure through holes or gaps which extend through the cap wherein said holes or gaps are essentially lengthwise in a machine direction and wherein the leading edge of the at least one first fixed formation shoe does not remove water from the second partial web in the first dewatering zone; after the non-pulsating dewatering, performing pulsating dewatering in a second dewatering zone of the two-wire stretch of the second wire unit with fixed dewatering lists placed against a side of the two-wire stretch, the lists extending in the cross machine direction and forming cross machine direction gaps therebetween, and applying under-pressure through said gaps to the two-wire stretch; and bringing one of the second wire of the second wire unit or the third wire of the second wire unit, having the second partial web thereon, into engagement with the first wire of the first forming unit having the first partial web thereon to join the first partial web to the second partial web at a joint.