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B - Operations, Transporting

41

J

B41J 27/04 (2006.01) B41K 3/56 (2006.01) B41N 1/12 (2006.01)

Patent

CA 2083029

A rechargeable ink pad having particular use with solution ink. The ink pad has a bottom layer of porous polychloroprene latex foam with pore sizes of 200µ to 500µ and a top layer of polyethylene foam with pore sizes of 10 to 20µ. The two layers are secured to one another by a fusible web adhesive. A method of customizing the porous polychloroprene latex layer to obtain desired properties by felting has been discovered. Such felting renders the finished porous polychloroprene latex foam suitable for controlled ink flow required for printing purposes.

Un tampon encreur rechargeable pouvant être utilisé en particulier avec de l'encre liquide. Le tampon encreur comprend une couche inférieure de caoutchouc mousse en polychloroprène poreux dont la taille des pores est comprise entre 200 mu et 500 mu et une couche supérieure de mousse de polyéthylène dont la taille des pores est comprise entre 10 mu et 20 mu. Les deux couches sont retenues ensemble par une toile thermocollante. On a découvert un procédé de feutrage qui permet de traiter la couche de caoutchouc mousse en polychloroprène poreux de manière à obtenir les caractéristiques voulues. Un tel procédé de feutrage permet de rendre le fini du caoutchouc mousse en polychloroprène poreux propice à un écoulement contrôlé d'encre liquide qui est requis en imprimerie.

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