D - Textiles – Paper – 21 – H
Patent
D - Textiles, Paper
21
H
D21H 17/18 (2006.01) A01G 9/10 (2006.01) B05D 3/10 (2006.01) D21F 5/02 (2006.01) D21H 17/06 (2006.01) D21H 17/07 (2006.01) D21H 25/06 (2006.01) D21H 27/02 (2006.01)
Patent
CA 2091481
Decay-resistant paper suitable for the manufacture of a pot for raising and transplanting seedling is the one partly containing decayable portions, which is prepared by heating paper made of a natural fiber, or a fiber blend composed of a natural fiber and a synthetic fiber, and impregnated with a compound capable of crosslinking the paper cellulose, at a temperature causing the reaction of antidecay treatment and at a temperature causing no such reaction in different portions. Such decay-resistant paper partly containing decayable portions can be easily prepared by bringing the above-mentioned paper impregnated with a compound capable of crosslinking the paper cellulose into contact in a single step with a heating apparatus comprising a heating part of a temperature causing the reaction of antidecay treatment and a heating part of a temperature causing no such reaction. As such a heating apparatus, may be used the one in which a rotary roll heater or a press-type heating plate is coated with a jacket having openings which is made of a material such as iron, copper and aluminum.
Ito Sumio
Tanimura Masashi
Terasawa Hidekazu
Mccarthy Tetrault Llp
Nihon Tensaiseito Kabushiki Kaisha
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