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EVOLUCION DE LA FABRICACION DE PASTAS PARA PAPEL

FEBRUARY 1977   -  Volume: 52 -  Pages: 35-43

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Received Date :   1 February 1977


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Article type:
ARTICULO DE INVESTIGACION / RESEARCH ARTICLE
Section:
VARIOUS

Alrededor del 95 % de las fibras que se utilizan para la fabricación de papel provienen de plantas madereras, ya sean resinosas o frondosas. En ellas, las fibras se encuentran formando parte del leño o xilema, es decir, en los tallos una vez descortezados. Las fibras se encuentran separadas entre sí por la llamada lámina media, que está constituida casi enteramente por una sustancia llamada lignina. En principio, hay dos modos para obtener fibras: Mecánico y Químico. En este último, la lignina de la lámina media es disuelta hasta un punto en que las fibras pueden separarse sin energía mecánica, normalmente el soplado de una lejiadora o los chorros de agua de dilución en las tinas de soplado son suficientes para separar las fibras.

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