Stork Screens B.v.

Karst Jan Van Weperen

Thomas Maria Jonkers

Norbertus Franciscus Jacobus Elemans

Petrus H Delmee

A printing form for rotary screen printing is provided and includes a thin-walled hollow cylinder made from fiber-reinforced plastics material, the cylinder wall of which is provided with continuous printing openings which define an image which is to be printed. The cylinder includes at least one layer having fibers with at least one oriented direction of the fibers. Multi-layer laminates made from carbon/epoxy having at least one layer with an oriented direction of the fibers which is parallel to the longitudinal axis of printing form are preferred.

Printing form for rotary screen printing made from fiber-reinforced plastics material

A thin-walled hollow cylinder is made from fiber-reinforced plastics material, the cylinder wall of which is composed of at least one layer having fibers with at least one oriented direction of the fibers, and the total wall thickness d lying in the range from 10 to 1000 &mgr;m, and the ratio d /D being&lE;0.0025. The oriented direction(s) of the fibers are selected depending on the intended final application. Examples include, inter alia, multi-layer laminates made from carbon/epoxy, used for the production of a cylinder of this nature, having at least one layer with an oriented direction of the fibers which is parallel or perpendicular to the longitudinal axis of the cylinder.

Thin-walled cylinder made from fibre-reinforced plastics material

Described is a method for forming a sieve material in which a sieve skeleton is thickened in an electrolysis bath with metal; in the bath as used at least one chemical compound is present having properties of both a first and second class brightener in such concentration and added with such a rate in view of the Ah (ampere hour) load that the internal stress in the finished sieve material is reduced in comparison to a sieve material produced in a bath comprising a conventional compound under conventional conditions. The invention also relates to a sieve material formed with the method described.

Growing community of inventors

Uden, Netherlands

Karst Jan Van Weperen