SYSTEM AND METHODS FOR MANUFACTURE OF COMPOSITE FABRICS CONTAINING STRUCTURED DISCRETE POLYMERIC REGIONS Russian patent published in 2007 - IPC B29C43/22 B29C43/28 

FIELD: system and methods for producing of composite fabrics containing structured discrete polymeric regions on at least one surface of fabrics.

SUBSTANCE: method involves transferring one or greater number of discrete polymeric regions onto basic surface of substrate under pressure enabling impregnation of thermoplastic material by substrate and/or encapsulation of substrate fibers; obtaining composite material including discrete structured polymeric regions formed therein for one pass, with substrate and melted thermoplastic composition being fed simultaneously; regulating form and volume of discrete polymeric regions and distance therebetween regardless of velocity of system line; obtaining one or greater number of discrete polymeric regions arranged along the entire length of substrate by means of transfer roll so that form and sizes of said regions are regulated; obtaining various discrete polymeric regions arranged crosswise of substrate from various thermoplastic compositions, with properties of various discrete polymeric regions applied onto substrate varying in fabric crosswise and lengthwise directions; obtaining one or greater number of discrete polymeric regions at both main surfaces of substrate. System has substrate 10 with greater number of reinforcing discrete polymeric regions 14 arranged on surface or within composite fabric. Discrete polymeric regions 14 are produced by applying of melted thermoplastic composition from slots 34 provided on transfer roll 30 onto substrate 10. Each of discrete polymeric regions 14 is then formed so that multiple structures 12 are produced within these regions. Such structures may include rods with heads or free of heads, hooks as part of securing hook-and-loop system, pyramids etc.

EFFECT: increased efficiency and improved quality of composite materials.

42 cl, 20 dwg