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Priority to PL15400872ApriorityCriticalpatent/PL77550B2/pl
Publication of PL77550B2publicationCriticalpatent/PL77550B2/pl
Pierwszenstwo: Zgloszenie ogloszono: 31.05.1973 Opis patentowy opublikowano: 21.04.19752 77550 PLPriority: Application announced: May 31, 1973 Patent description was published: April 21, 19752 77550 PL
Claims (1)
1. Zastrzezenie patentowe Sposób wytwarzania tworzywa sciernego do scierania napisów, wykonanych na papierze, znamienny tym, ze polichlorek winylu ogrzewa sie i miesza ze zmiekczaczem i wypelniaczem sciernym, przy czym stosuje sie polichlorku winylu od 20% do 40%, zmiekczacza od 30% do 45% i wypelniaczy sciernych od 25% do 35%, po czym jednolita mase poddaje dalszej homogenizacji i ksztaltowaniu na gotowe produkty. Prac. Poligraf. UP PRL. zam. 2102/75 naklad 120+18 Cena 10 zl PL1. Patent claim A method of producing an abrasive material for abrasive inscriptions made on paper, characterized in that polyvinyl chloride is heated and mixed with a softener and an abrasive filler, using polyvinyl chloride from 20% to 40%, softener from 30% to 45% and abrasive fillers from 25% to 35%, after which the uniform mass is further homogenized and shaped into finished products. Wash. Typographer. UP PRL. residing 2102/75 circulation 120 + 18 Price PLN 10 PL