Method for making sheet materials and security paper

Details Method for making sheet materials and security paper Method for making sheet materials and security paper

D - Textiles, Paper

21

F

D21F 1/44 (2006.01) D21F 1/46 (2006.01) D21H 21/42 (2006.01)

Patent

CA 2121597

2121597 9308327 PCTABS00021 This invention relates to a method of making sheet materials and security paper having partially embedded therein an elongate security element (20) which is partially disposed within the thickness of the sheet and exposed at spaced locations (26). The method comprises the steps of depositing fibres onto a moving support surface (11), supplying an elongate security element (20) to overlie rotatable embedment means (10), which embedment means comprise a plurality of spaced-apart raised portions (16) having recesses (17) therebetween, introducing the security element into the fibres with rotation of the embedment means such that some fibres move into said recesses between the security element and the embedment means so that said security element is covered by fibres, and substantially preventing fibres from penetrating between the raised portions and the overlying security element.

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