US1996989A - Production of artificial filaments - Google Patents
Production of artificial filaments Download PDFInfo
- Publication number
- US1996989A US1996989A US377915A US37791529A US1996989A US 1996989 A US1996989 A US 1996989A US 377915 A US377915 A US 377915A US 37791529 A US37791529 A US 37791529A US 1996989 A US1996989 A US 1996989A
- Authority
- US
- United States
- Prior art keywords
- filaments
- artificial
- acid
- production
- bath
- 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
Links
- 238000004519 manufacturing process Methods 0.000 title description 5
- 238000000034 method Methods 0.000 description 17
- 230000008569 process Effects 0.000 description 16
- 239000002253 acid Substances 0.000 description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 11
- 229920000297 Rayon Polymers 0.000 description 8
- 230000015271 coagulation Effects 0.000 description 7
- 238000005345 coagulation Methods 0.000 description 7
- 239000007788 liquid Substances 0.000 description 7
- 230000001376 precipitating effect Effects 0.000 description 6
- 150000003839 salts Chemical class 0.000 description 5
- 238000005406 washing Methods 0.000 description 5
- 230000009471 action Effects 0.000 description 4
- 230000001112 coagulating effect Effects 0.000 description 4
- 239000000126 substance Substances 0.000 description 3
- 238000004804 winding Methods 0.000 description 3
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 2
- 238000011282 treatment Methods 0.000 description 2
- 241000256844 Apis mellifera Species 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000000693 micelle Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H7/00—Construction or assembling of bulk storage containers employing civil engineering techniques in situ or off the site
- E04H7/02—Containers for fluids or gases; Supports therefor
- E04H7/18—Containers for fluids or gases; Supports therefor mainly of concrete, e.g. reinforced concrete, or other stone-like material
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B23/00—Noble gases; Compounds thereof
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D10/00—Physical treatment of artificial filaments or the like during manufacture, i.e. during a continuous production process before the filaments have been collected
- D01D10/06—Washing or drying
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/06—Wet spinning methods
-
- 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
- D01F2/00—Monocomponent artificial filaments or the like of cellulose or cellulose derivatives; Manufacture thereof
- D01F2/06—Monocomponent artificial filaments or the like of cellulose or cellulose derivatives; Manufacture thereof from viscose
Definitions
- Patented Apr. 9, 1935 PATENT OFFICE PRODUCTION OF ARTIFICIAL FILAMENTS Arnold Bernstein, Mannheim, Germany, asslgnor to Zellstoflfabrik-Waldhof, Mannheim-Waldhof, Germany No Drawing. Application July 12, 1929, Serial No. 377,915. In Germany August 9, 1928 7 Claims.
- This invention relates to the production of ar tificial silk or the like from viscose solution and more particularly to an improved process for such production. 4
- One object of the invention is to obtain an improved washing of the filaments.
- Another object of the invention is to increase the strength of or in other words to sthenosize the filaments without increasing the number of steps of the process.
- the acid parts and the salts are removed directly following the precipitating process in a hot water bath and immediately after removal of the artificial filaments from this bath the tissues are run on winding devices.
- the process may for example be carried out in the following manner.
- the filament bundle passing out of the acid precipitating liquid is immediately drawn through a hot flowing water bath at about 70 C., and extending for about 50 centimetres and immediately following is wound up on a spool rotating outside this bath but which may also rotate in a treating liquid.
- the filaments thus spooled are free from acid and salts and can be subjected to further treat ment without any additional washing.
- the advantage of the new process as compared with those previously adopted is that it provides a considerable saving of labor.
- the action of the hot aqueous liquid and the removal of the acids, salts and gaseous products of decomposition directly after the precipitating and fixing process causes sthenosizing of the product as a longer period of action of these substances unfavorably influences the product especially in the case of an artificial filament.
- additional sthenosizing of the product may be provided by adding to the hot washing liquid organic substances such as formalin or the like.
- the process of the invention carried out in the above described manner provides a considerable increase in the strength of the artificial filament or the like if the filaments on passing through the hot water bath are simultaneously subjected to strong tension. This may be effected for example by leading the artificial filaments or the like over rollers or other suitable guides which subject the filaments to tension by extending the path thereof and increasing the resistance to friction.
- Extending the artificial filaments is not novel, per se, but in known processes this step is, however, completed in the first precipitating bath at which stage the filament is of a quite soft and elastic character and the primary object of such a step is to draw out the filaments to a greater fineness.
- the filament which is already considerably hardened is subjected to tension when under the action of the hot aqueous liquid with the result that no important reduction of its cross section takes place.
- the strength of the filament is, however, considerably increased probably due to the displacement and parallel positioning of the small cellulose particles (micelle).
- a process of the type herein described for producing artificial filaments or the like from viscose solution which consists in forming the filaments in an acid coagulating bath, leading the unwound filaments directly through a hot water bath after coagulation and subsequently imme diately spooling said filaments.
- a process of the type herein described for producing artificial filaments or the like from viscose solution which consists in forming the filaments in an acid coagulating bath, leading the unwound filaments directly through a hot water bath after coagulation, simultaneously sthenosizing said filaments and subsequently spooling said filaments.
- a process of the type herein described for producing artificial filaments or the like from viscose solution which consists in forming said filaments in an acid coagulating bath, leading unwound coagulated vfilaments directly after coagulation through a hot water bath containing iormalin as a sthenosizing agent and subsequently spooling said filaments.
- a process or the type herein described for producing artificial filaments or the like from viscose solution consisting in forming said filaments in an acid coagulating bath, passing said unwound filaments directly after coagulation 'through a hot water bath, subjecting said filaments on their passage through said water to a tensioning action and subsequently spooling said filaments.
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Architecture (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Inorganic Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Engineering & Computer Science (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Artificial Filaments (AREA)
- Materials For Medical Uses (AREA)
Description
Patented Apr. 9, 1935 PATENT OFFICE PRODUCTION OF ARTIFICIAL FILAMENTS Arnold Bernstein, Mannheim, Germany, asslgnor to Zellstoflfabrik-Waldhof, Mannheim-Waldhof, Germany No Drawing. Application July 12, 1929, Serial No. 377,915. In Germany August 9, 1928 7 Claims.
This invention relates to the production of ar tificial silk or the like from viscose solution and more particularly to an improved process for such production. 4
I In the production of artificial filaments and similar tissues from viscose solution the usual procedure is to cause the artificial tissue to separate out in an acid liquid and then the tissue, for example the artificial filament, is led to a 10 winding device. The wound spools are strongly saturated with acid liquid and in order to remove this dangerous substance they must be subjected to a longand inconvenient washing process. The spools are then dried, and the silk twisted and brought into skein or hank form. The hanks thus obtained are finally desulphurized, bleached, washed and prepared.
In some cases in order to remove the greater part of the acid adhering to the spools previously to washing the spools the winding up devices are caused to rotate in a warm water bath. This step, however, only produces a partial removal of the acidliquid. A further suggestion is to neutralize the. acid used in connection with the formation of the filament by suitable treatment such as salt forming and to spool the salt-containing silk.
One object of the invention is to obtain an improved washing of the filaments.
Another object of the invention is to increase the strength of or in other words to sthenosize the filaments without increasing the number of steps of the process.
In accordance with the present process the acid parts and the salts are removed directly following the precipitating process in a hot water bath and immediately after removal of the artificial filaments from this bath the tissues are run on winding devices.
The process may for example be carried out in the following manner. The filament bundle passing out of the acid precipitating liquid is immediately drawn through a hot flowing water bath at about 70 C., and extending for about 50 centimetres and immediately following is wound up on a spool rotating outside this bath but which may also rotate in a treating liquid. The filaments thus spooled are free from acid and salts and can be subjected to further treat ment without any additional washing.
The advantage of the new process as compared with those previously adopted is that it provides a considerable saving of labor. The action of the hot aqueous liquid and the removal of the acids, salts and gaseous products of decomposition directly after the precipitating and fixing process causes sthenosizing of the product as a longer period of action of these substances unfavorably influences the product especially in the case of an artificial filament.
If desired, additional sthenosizing of the product may be provided by adding to the hot washing liquid organic substances such as formalin or the like.
The process of the invention carried out in the above described manner provides a considerable increase in the strength of the artificial filament or the like if the filaments on passing through the hot water bath are simultaneously subjected to strong tension. This may be effected for example by leading the artificial filaments or the like over rollers or other suitable guides which subject the filaments to tension by extending the path thereof and increasing the resistance to friction.
Extending the artificial filaments is not novel, per se, but in known processes this step is, however, completed in the first precipitating bath at which stage the filament is of a quite soft and elastic character and the primary object of such a step is to draw out the filaments to a greater fineness.
In contradistinction thereto in accordance with the new process, the filament which is already considerably hardened is subjected to tension when under the action of the hot aqueous liquid with the result that no important reduction of its cross section takes place. The strength of the filament is, however, considerably increased probably due to the displacement and parallel positioning of the small cellulose particles (micelle).
What I claim is:-
l. A process of the type herein described for producing artificial filaments or the like from viscose solution which consists in forming the filaments in an acid coagulating bath, leading the unwound filaments directly through a hot water bath after coagulation and subsequently imme diately spooling said filaments.
2. A process of the type herein described for producing artificial filaments or the like from viscose solution which consists in forming the filaments in an acid coagulating bath, leading the unwound filaments directly through a hot water bath after coagulation, simultaneously sthenosizing said filaments and subsequently spooling said filaments.
3. A process of the type herein described for producing artificial filaments or the like from viscose solution which consists in forming said filaments in an acid coagulating bath, leading unwound coagulated vfilaments directly after coagulation through a hot water bath containing iormalin as a sthenosizing agent and subsequently spooling said filaments.
4. A process or the type herein described for producing artificial filaments or the like from viscose solution consisting in forming said filaments in an acid coagulating bath, passing said unwound filaments directly after coagulation 'through a hot water bath, subjecting said filaments on their passage through said water to a tensioning action and subsequently spooling said filaments.
5. That step in the process 01' producing artificial filaments or the like from viscose solution by coagulation of said filaments in an acid precipitating bath and by subsequent spooling 0! said filaments which consists in immersing the coagulated filaments in a hot water bath in direct sequence ai'ter coagulation and prior to spooling said filaments. v I 6. That improvement in the process of producing artificial filaments'or the like from viscose solution by coagulation of said filaments in an acid precipitating bath and by subsequent spooling of said filaments which consists in immersing the coagulated filaments in a hot water bath in 'direct sequence after precipitation and prior to
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE1996989X | 1928-08-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US1996989A true US1996989A (en) | 1935-04-09 |
Family
ID=7935305
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US377915A Expired - Lifetime US1996989A (en) | 1928-08-09 | 1929-07-12 | Production of artificial filaments |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US1996989A (en) |
| FR (1) | FR679734A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2433733A (en) * | 1945-01-04 | 1947-12-30 | Skenandoa Rayon Corp | Process of manufacturing viscose rayon yarn |
| US20120145949A1 (en) * | 2010-12-08 | 2012-06-14 | Shangai Huayi Microelectronic Material Co., Ltd. | Method for producing electronic grade aqueous ammonium fluoride solution |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE749264C (en) * | 1938-11-09 | 1944-11-21 | Ig Farbenindustrie Ag | Process for the production of synthetic fibers or threads from viscose |
-
1929
- 1929-07-12 US US377915A patent/US1996989A/en not_active Expired - Lifetime
- 1929-08-02 FR FR679734D patent/FR679734A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2433733A (en) * | 1945-01-04 | 1947-12-30 | Skenandoa Rayon Corp | Process of manufacturing viscose rayon yarn |
| US20120145949A1 (en) * | 2010-12-08 | 2012-06-14 | Shangai Huayi Microelectronic Material Co., Ltd. | Method for producing electronic grade aqueous ammonium fluoride solution |
Also Published As
| Publication number | Publication date |
|---|---|
| FR679734A (en) | 1930-04-16 |
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