US1437491A - Process of drying artificial silk - Google Patents

Process of drying artificial silk Download PDF

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Publication number
US1437491A
US1437491A US408037A US40803720A US1437491A US 1437491 A US1437491 A US 1437491A US 408037 A US408037 A US 408037A US 40803720 A US40803720 A US 40803720A US 1437491 A US1437491 A US 1437491A
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US
United States
Prior art keywords
air
drying
threads
chamber
temperature
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US408037A
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English (en)
Inventor
Bronnert Emile
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to NL14630A priority Critical patent/NL9846C/xx
Priority to GB11362/20A priority patent/GB170608A/en
Priority to FR514461A priority patent/FR514461A/fr
Application filed by Individual filed Critical Individual
Priority to US408037A priority patent/US1437491A/en
Application granted granted Critical
Publication of US1437491A publication Critical patent/US1437491A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F11/00—Chemical after-treatment of artificial filaments or the like during manufacture
    • D01F11/02—Chemical after-treatment of artificial filaments or the like during manufacture of cellulose, cellulose derivatives, or proteins

Definitions

  • JZAWAQL I E. BRONNERT' PROCESS OF DRYING ARTIFICIAL SILK.
  • This invention relates to a rapid drying in process for freshly precipitated cellulose hydrate. threads. 1 v
  • the difference 1 time necessary for drying is due to the fact that Water diffuses much more rapidly from artificial silk thread which has once been fixed by.drying than from the colloidal and gelatinous thread freshly precipitated or even from the thread which is approaching the normal solid state upon progressivedrying. Difj ferences of permeability of the material in a different physical state, and different strength of capillary forces may be the ssreasons of this phenomenon.
  • this invention consists in the proc ess, for drying cellulose hydrate filaments, by employing temperatures higher than have hitherto ,been held to be applicable, without impairing them. This is accomplished by using a strong current of air, care being taken by proper measures that the contact of theair with the threads is as intimate as possible and that at any given time, in any cross section of the apparatus, the temperatureis perfectly uniform.
  • Figure 1 is a diagrammatic longtiudinal section of such apparatus.
  • Figs. 2, 3 and 4 are similar views of other forms of such apparatus.
  • the drying passage is provided with vertical walls 0 which are perforated to allow air to pass and which form the drying chambers 0;, wherein the materialto be dried is placed. Between each pair ofwalls c a'space is left for the reception of heating coils 6,.
  • the perforated walls a may consist of lattice work or of perforated plates. The air flows in the direction of the arrows through the various chambers.
  • the air which has been cooled in the first chamber by drying the material deposited therein, is, upon passing out of the chamber into the next chamber not only quite uniformly heated by the heating coi 6,, but also, in consequence of the numerous uniformly distributed openings in the walls 0 is thoroughly mixed, so that only air which has been uniformly heated in all parts and is therefore in thermal equilibrium is admitted to the material deposited in the chamber next in line. cedure is followed in the subsequent cham bers formed by the spaced walls separating them.
  • the tops andthe bottoms of the drying chambers a are formed of perforated Walls 0 and the heating coils 6 are accommodated in between spaced impervious walls between the chambers a and which separate the drying chambers from one another.
  • the current of air, in passing through the horizontal perforated ,walls 0 is so mixed that it enters the drying chamhers in a uniformly heated condition.
  • the heating coils Z2 are housed in special communication passages which are arranged at the top of the apparatus.
  • the air flowing downwards out of one chamber a passes through the perforated walls 0 at the bottom into the next chamber through the upper perforated wall and the aperture i into the heating passage, is here heated up again and then flows through the aperture Z and the upper per-. forated Wall of the drying chamber into the latter chamber and so forth.
  • the re-heating of the air only takes place once for every other chamber.
  • Arrangements may be made if desired for removing the material which is first dried without waiting. until all the fibres in all the chambers are ready for removal, or for shifting the material from one chamber to another in any well known manner, or disconnecting the chambers singly from the hot-air circuit.
  • Such arragements however form no part of the invention, as the threads exposed to the hottest and driest air may quite safely be left there until the drying is completed throughout.
  • the step in the process of producing artificial silk which comprises subjecting gelatinous cellulose hydrate to the action of a continuously moving current of hot air, of a temperature of 100 C. to 140 C.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)
  • Treatment Of Fiber Materials (AREA)
US408037A 1920-04-23 1920-09-03 Process of drying artificial silk Expired - Lifetime US1437491A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
NL14630A NL9846C (fr) 1920-04-23 1920-04-23
GB11362/20A GB170608A (en) 1920-04-23 1920-04-23 Improvements in or relating to the manufacture of artificial silk
FR514461A FR514461A (fr) 1920-04-23 1920-04-23 Procédé de séchage rapide de fils de cellulose fraichement précipités
US408037A US1437491A (en) 1920-04-23 1920-09-03 Process of drying artificial silk

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
NL14630A NL9846C (fr) 1920-04-23 1920-04-23
GB11362/20A GB170608A (en) 1920-04-23 1920-04-23 Improvements in or relating to the manufacture of artificial silk
FR514461T 1920-04-23
US408037A US1437491A (en) 1920-04-23 1920-09-03 Process of drying artificial silk

Publications (1)

Publication Number Publication Date
US1437491A true US1437491A (en) 1922-12-05

Family

ID=40092836

Family Applications (1)

Application Number Title Priority Date Filing Date
US408037A Expired - Lifetime US1437491A (en) 1920-04-23 1920-09-03 Process of drying artificial silk

Country Status (4)

Country Link
US (1) US1437491A (fr)
FR (1) FR514461A (fr)
GB (1) GB170608A (fr)
NL (1) NL9846C (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3364838A (en) * 1966-02-01 1968-01-23 Gen Electric Cabinet for mounting, enclosing and cooling electrical apparatus
US12037709B2 (en) * 2019-10-08 2024-07-16 Soochow University Drying apparatus and drying method for raw silk degumming process

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3364838A (en) * 1966-02-01 1968-01-23 Gen Electric Cabinet for mounting, enclosing and cooling electrical apparatus
US12037709B2 (en) * 2019-10-08 2024-07-16 Soochow University Drying apparatus and drying method for raw silk degumming process

Also Published As

Publication number Publication date
FR514461A (fr) 1921-03-11
NL9846C (fr) 1923-11-15
GB170608A (en) 1921-10-24

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