US2325574A - Manufacture of sheets or bands from highly viscous cellulose solutions - Google Patents

Manufacture of sheets or bands from highly viscous cellulose solutions Download PDF

Info

Publication number
US2325574A
US2325574A US292041A US29204139A US2325574A US 2325574 A US2325574 A US 2325574A US 292041 A US292041 A US 292041A US 29204139 A US29204139 A US 29204139A US 2325574 A US2325574 A US 2325574A
Authority
US
United States
Prior art keywords
spinning
bands
sheets
highly viscous
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
US292041A
Other languages
English (en)
Inventor
Wunderer Anton
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
Application filed by Individual filed Critical Individual
Application granted granted Critical
Publication of US2325574A publication Critical patent/US2325574A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • D01F2/00—Monocomponent artificial filaments or the like of cellulose or cellulose derivatives; Manufacture thereof
    • D01F2/02—Monocomponent artificial filaments or the like of cellulose or cellulose derivatives; Manufacture thereof from solutions of cellulose in acids, bases or salts

Definitions

  • the present invention relates to the production of foils or hands of regenerated cellulose from highly viscous spinning masses.
  • This invention relates to a method by which there may be obtained from a highly viscous solution of cellulose, for instance a pasty solution of cellulose in sulphuric acid, phosphoric should not be heated or should be heated to quite,
  • a cold spinning mass should be supplied to the spinning slot, 1. e., a spinning mass the temperature of which is below room temperature.
  • the temperature should preferably not exceed about 10 C.
  • the heating of the spinning mass at that part which after regeneration of the cellulose becomes the'surface of the foil may be achieved by heating uniformly to the required temperature the two edges or lips of the spinning slot. In this manner the outer layers of the spinning mass I are warmed to the necessary degree during their acid or the like, sheets, films or bands having smooth surfaces.
  • the new process is characterized by the fact that the highly viscous spinning mass is heated superficially while it passes through the slot of the employed spinning device, that is to say the part of the spinning mass which is to come into contact with the inner surface of the spinning slot is suitably warmed. In this manner the spinning mass is liquefied at its surface by degradation. The viscosity at the surface of the spinning mass can be lowered to a degree at which the issue from the spinning orifice is faultless and the surface of the extruded sheet is quite smooth I passage through the slot.
  • the temperature of the lips depends on the temperature of the spinning mass and the period of time during which the latter is in contact with the heated parts. In general the temperature of the spinning lips should be between 30 and C. When the speed of the spinning is very high, the temperature may also be higher, for instance 200 or 300' C.
  • a solution of cellulose in sulphuric acid having a temperature between about 0 and 10 C. and containing 7-8 per cent of cellulose, 57-60 per cent of sulphuric acid and the rest water is fed under' a pressure of some atmospheres to a spinning device such as that indicated by way of'example in the accompanying drawing which is a transverse section through the device.
  • the spinning device i has a slot 5, the edges of which are .14 mm. distant from each other.
  • the length of the path along which the spinning solution 3 flows, namely the heated surfaces 4 of the slot is about 30 mm.
  • the speed of discharge of the spinning solution is about 1 m.
  • a process for producing bands of regenerated cellulose with smooth surfaces which comprises leading to a spinning slot 9.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
US292041A 1938-08-29 1939-08-26 Manufacture of sheets or bands from highly viscous cellulose solutions Expired - Lifetime US2325574A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2325574X 1938-08-29

Publications (1)

Publication Number Publication Date
US2325574A true US2325574A (en) 1943-07-27

Family

ID=7994769

Family Applications (1)

Application Number Title Priority Date Filing Date
US292041A Expired - Lifetime US2325574A (en) 1938-08-29 1939-08-26 Manufacture of sheets or bands from highly viscous cellulose solutions

Country Status (4)

Country Link
US (1) US2325574A (enrdf_load_html_response)
BE (1) BE436162A (enrdf_load_html_response)
FR (1) FR859581A (enrdf_load_html_response)
NL (1) NL51642C (enrdf_load_html_response)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2880465A (en) * 1955-01-15 1959-04-07 Bemberg Ag Process for the production of cellulosic sheets
US3327038A (en) * 1965-06-24 1967-06-20 Koppers Co Inc Extrusion die
US5985030A (en) * 1996-02-07 1999-11-16 Gl&V-Paper Machine Group, Inc. Wet end starch application
US5997692A (en) * 1996-02-07 1999-12-07 Gl&V-Paper Machine Group, Inc. Profiling wet end starch applicator
CN117468173A (zh) * 2023-12-27 2024-01-30 赛普(杭州)过滤科技有限公司 一种多孔带状纤维膜及其制备方法和应用

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2880465A (en) * 1955-01-15 1959-04-07 Bemberg Ag Process for the production of cellulosic sheets
US3327038A (en) * 1965-06-24 1967-06-20 Koppers Co Inc Extrusion die
US5985030A (en) * 1996-02-07 1999-11-16 Gl&V-Paper Machine Group, Inc. Wet end starch application
US5997692A (en) * 1996-02-07 1999-12-07 Gl&V-Paper Machine Group, Inc. Profiling wet end starch applicator
EP0963487A4 (en) * 1996-02-07 2000-04-12 Jefferson Smurfit Corp STRENGTH ADDED IN THE WET SECTION
CN117468173A (zh) * 2023-12-27 2024-01-30 赛普(杭州)过滤科技有限公司 一种多孔带状纤维膜及其制备方法和应用
CN117468173B (zh) * 2023-12-27 2024-04-05 赛普(杭州)过滤科技有限公司 一种多孔带状纤维膜及其制备方法和应用

Also Published As

Publication number Publication date
NL51642C (enrdf_load_html_response)
BE436162A (enrdf_load_html_response)
FR859581A (fr) 1940-12-21

Similar Documents

Publication Publication Date Title
DE653250C (de) Herstellung von biegsamen Baendern oder Faeden aus Polystyrol o. dgl.
NO146987B (no) Fremgangsmaate for fremstilling av formede gjenstander av cellulose.
US2325574A (en) Manufacture of sheets or bands from highly viscous cellulose solutions
DE1137167B (de) Verfahren zur Herstellung von Gebilden, wie Faeden oder Draehte, aus Polycarbonaten
US2910380A (en) Method of making seamless viscoseregenerated cellulose tubing
DE1183231B (de) Verfahren zum Kristallisieren von extrudierten Folien aus hochmolekularen linearen Polycarbonaten
US3336429A (en) Method of forming shaped articles of amylose
US2285552A (en) Production of filaments
US2354745A (en) Method of producing artificial shaped articles
US2847713A (en) Process for producing synthetic sausage skins and other laminar structures from alginates
JPS613710A (ja) ポリカーボネート射出成形品の製造方法
DE1779992A1 (de) Verfahren zur qualitaetsverbesserung einer polyamidfolie
US2156929A (en) Zein filaments
US2445333A (en) Process of making regenerated cellulose films
US2735846A (en) Production of alkali cellulose
US3034910A (en) Production of regenerated cellulose filaments from wood pulp
US839825A (en) Manufacturing cellulose products.
US3047412A (en) Viscose composition and method of spinning
US1894907A (en) Indurated cellulosic product and method of making the same
US2953468A (en) Production of shaped objects from viscose
US1974273A (en) Manufacture of artificial filaments
US2399970A (en) Manufacture of polyvinyl alcohol threads
JPS62243642A (ja) ポリエチレンテレフタレ−ト溶液の調製方法
US2974004A (en) Production of shaped objects from viscose
FR759815A (fr) Procédé de fabrication de feuilles d'hydrate de cellulose particulièrement minces et transparentes