['4009-2', 'Porous', 'cigarette', 'paper', 'was', 'coated', 'with', 'a', '5%', 'solution', 'of', 'water', 'soluble', 'cellulose', 'acetate', 'with', 'and', 'without', 'a', 'small', 'quantity', 'of', 'added', 'Cac0O,;.', 'The', 'additives', 'were', 'suggested:', 'by', 'G.', 'Keritsis', 'as', 'a', 'way', 'to', 'smooth', 'the', 'smoke', 'and', 'to', 'get', 'some', 'sidestream.', 'reduction', 'by', 'melting', 'of', 'coating', 'around', 'the', 'charline.', 'The', 'sidestream', 'visibility', 'for', 'the', "coated'", 'model', 'with', 'CaCO,', 'was', 'decreased', 'by', '13%', 'and', 'for', 'the', 'WSCA', 'the', 'reduction', 'was', '22%.', 'The', 'coatings', 'made', 'the', 'papers', 'nonporous', '(55-90:', 'seconds', 'Greiner),', 'which', 'caused', 'mainstream', 'deliveries', 'to', 'increase', 'correspondingly.', 'Preliminary', 'subjective', 'smoking', 'indicated', 'that', 'the', 'coatings', 'might', 'have', 'given', 'the:', 'desired', 'smoothing', 'effect', 'compared', 'to', 'what', 'would', 'be', 'expected', 'for', 'non-', 'porous:', 'papers.', 'It', 'is', 'questionable', 'whether', 'the', 'coatings', 'contributed', 'to', 'any', 'additional', 'reduction', 'of', 'the', '$s', 'visibility', 'beyond:', 'the', 'effect', 'of', 'the', 'porosity', 'change.', 'Sidestream', 'visibilities', 'were', 'measured’', 'for', 'many', 'different', 'versions', 'of', 'the', 'small', 'particle', 'size', 'CaCO,', 'paper.', 'Higher', 'reductions', 'were', 'seen', 'for', 'the', 'cigarettes', 'made', 'in', 'Louisville', 'than', 'previous', 'models', 'that', 'had', 'been', 'less', 'densely', 'packed', 'with', 'tobacco.', 'All', 'four', 'K-C', 'production', 'papers', 'gave', 'visibility', 'reductions', 'around', '58%', 'compared', 'to', 'Capri', 'controls.', 'Perforation', 'of', 'the', 'wrapper', 'did', 'not', 'significantly', 'change', 'the', 'visibility', 'reduction.', 'MAP', 'on', 'the', 'K=-C', 'paper', 'gave', 'a', '40%', 'reduction,', 'while', 'the', 'Trim', 'I', 'paper', 'gave', '12%', 'lower', 'SS', 'visibility', 'than', 'Capri.', 'Plans:', 'Continue', 'investigation', 'of', 'chemical', 'loading', 'on', 'the', 'Cac0,', 'paper,', 'and', 'development', 'of', 'reduced', 'level', 'Mg(0H),', 'wrappers.', 'II.', 'TIPPING', 'PAPER', 'INVESTIGATIONS', ' ', 'A.', 'Objective:', 'To', 'examine', 'different', 'papers', 'for', 'appearance,', 'composition', 'and', 'performance.', 'Results:', 'A', 'series', 'of', 'cigarettes', 'were', 'made', 'with', 'black', 'or', 'white', 'tow', 'on', 'the', 'inner', 'section', 'of', 'a', 'charcoal', 'filter.', 'Each', 'tow', 'combination', 'was', 'wrapped', 'with', 'three', 'different', 'plug', 'wraps', 'and', 'two', 'different', 'tippings.', 'Selected', 'models', 'were', 'submitted', 'for', 'O/C', 'panel', 'testing', 'of', 'appearance,', 'specifically', 'at', 'the', 'filter', 'junction.', 'The', 'white', 'tow', 'models.', 'were', 'rated', 'as', 'having', 'less', 'obvious', 'junctions', 'than.', 'the', 'black', 'ones.', 'A.', 'nonporous.', 'perforated', 'plug', 'wrap', 'concealed', 'the', 'junction', 'better', 'than', 'the', 'porous', '33M1,', 'with', 'a', 'higher', 'opacity', 'porous', 'plug', 'wrap', 'falling', 'in', 'the', 'middle.', 'The', 'difference', 'between', 'a', 'higher', 'basis', 'weight', 'and', 'a', 'normal', 'basis', 'weight', 'tipping', 'was', 'not', 'signifiicant.', 'Plans:', 'Determine', 'the', 'variability', 'of', 'dilution', 'on', 'cigarettes', 'with', 'the', 'perforated', 'plug', 'wrap.', 'Compare', 'previous', 'combinations', 'with', 'the', 'current', 'ones.', '15', 'OTve9tezoz']