Interface control

A method for producing a shaped layered composite comprising an interface defined by melt-lamination of overlapping flow streams, wherein said interface lies generally in an x-z plane of an x-y-z coordinate system in which the x-axis defines a transverse dimension of said interface and the y-axis extends generally perpendicularly through said interface, said method comprising

• with a first shaped flow stream and a second shaped flow stream each having a main flow direction generally in the z-direction, and said first shaped flow stream and said second shaped flow stream being suitably shaped for melt-lamination, changing the relative orientation of said first shaped flow stream to said second shaped flow stream from a generally side-by-side orientation along said x-axis to a generally stacked orientation in which said first shaped flow stream defines a first plane and said second shaped flow stream defines a second plane along said y-axis,
• thereafter forming said interface of said shaped layered composite by melt-laminating said first shaped flow stream and said second shaped flow stream, wherein said layered composite is formed independent of division of a layered precursor stream, and
• thereafter dimensionally increasing said interface along said x-axis to form a multilayered composite product of greater width than thickness, wherein said interface is generally parallel to said width.