| PATENT ASSIGNEE'S COUNTRY | Germany |
| UPDATE | 06.99 |
| PATENT ASSIGNEE | This data is not available for free |
| PATENT CLAIMS |
Thin printing paper mfg process with wt./unit area 24 - 49 g/square.m comprising - Prepg a base paper, with wt./unit area < 46 g/square.m, from paper fibre mixt comprising < 40% cellulose & with ash content > 8%, on paper-making machine running at screen speed > 700 m/min - Coating base paper on both sides within paper-making ma chine with surface film that contains pigments & that has wt./ unit area < 5 g/square.m, oven dried per side, & which is free of synthetic organic binder, is naturally bonded, & which comprises coat. pigment mixt whose solid content compri ses mixt of a swellable coat. silicate, & mineral coat. pig ments, in which ratio of 40 - 60 parts by wt., rel. to pigment mixt, of a swellable coat. silicate & 60 - 40 parts by wt. of mineral coat. pigments & natural organic binder within 1 - 15 parts by wt., which is dry in each instance, & additives such as agents that affect rheology, dyes & wet-strength agents |
| PATENT PHOTOCOPY | Available on request |
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