US437555A - Process of making pine-needle fiber - Google Patents

Process of making pine-needle fiber Download PDF

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Publication number
US437555A
US437555A US437555DA US437555A US 437555 A US437555 A US 437555A US 437555D A US437555D A US 437555DA US 437555 A US437555 A US 437555A
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US
United States
Prior art keywords
needles
fiber
making
pine
needle fiber
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Expired - Lifetime
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Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
    • D21C9/00—After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere
    • D21C9/10—Bleaching ; Apparatus therefor
    • D21C9/1057—Multistage, with compounds cited in more than one sub-group D21C9/10, D21C9/12, D21C9/16

Definitions

  • the object of my invention is to supply a process for the making of vegetable wool or fiber from pine-needles, which shall econo-.
  • the first step in my process is breaking the needles. This is done, preferably, between tightly-pressed rollers, either smooth or corrugated, and is for the purpose of loosening the silica which surrounds the fibers in order to more thoroughly impregnate the needles with the alkali at the proper time and to allow said alkali to reach under this silicious layer and attack the silica at all surfaces at once.
  • the needles having been thus rolled and pressed and the glazing loosened from the outside of the same, the next step in my process is to place them within a boiler strong enough to sustain a pressure of from two to nine atmospheres, or a temperature of from 212 to 350 Fahrenheit.
  • this boiler I then introduce a solution of alkali, preferably barium hydrate or sodium hydrate or carbonate, according to the circumstances.
  • This solution I raise to a temperature varying, as above indicated, from 212to 350' Fahrenheit.
  • the efiect of this boiling or digesting is to dissolve the silica in the alkaline solution, converting it into soluble glass, which can be removed with the liquor.
  • Thisboiling is carried on at this temperature for about five hours, according to various circumstances, and then the liquor is drawn off. After the drawing off of this liquor warm or hotwater is run onto the needles and the mass is well stirred for an hour or so for the purpose of rinsing out all the soluble glass and the saponified resin which remain among the fibers of the needles.
  • This fiber is also peculiarly refractory as against the influence of the acid in phosphates. Thus it is well adapted to be made into bags for containing phosphates.

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Treatment Of Fiber Materials (AREA)
US437555D Process of making pine-needle fiber Expired - Lifetime US437555A (en)

Publications (1)

Publication Number Publication Date
US437555A true US437555A (en) 1890-09-30

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ID=2506457

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US437555D Expired - Lifetime US437555A (en) Process of making pine-needle fiber

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