New! View global litigation for patent families

US1831030A - Artificial hollow thread manufacturing process - Google Patents

Artificial hollow thread manufacturing process Download PDF

Info

Publication number
US1831030A
US1831030A US27342628A US1831030A US 1831030 A US1831030 A US 1831030A US 27342628 A US27342628 A US 27342628A US 1831030 A US1831030 A US 1831030A
Authority
US
Grant status
Grant
Patent type
Prior art keywords
sulphate
zinc
hollow
coagulating
artificial
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
Inventor
Picard Rene
Original Assignee
Alsa In Basel Soc
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
Grant date

Links

Images

Classifications

    • DTEXTILES; PAPER
    • D01NATURAL OR ARTIFICIAL THREADS OR FIBRES; SPINNING
    • D01DMECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D5/00Formation of filaments, threads, or the like
    • D01D5/24Formation of filaments, threads, or the like with a hollow structure; Spinnerette packs therefor
    • D01D5/247Discontinuous hollow structure or microporous structure
    • DTEXTILES; PAPER
    • D01NATURAL OR ARTIFICIAL THREADS OR FIBRES; SPINNING
    • D01DMECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D5/00Formation of filaments, threads, or the like
    • D01D5/06Wet spinning methods

Description

' Patented Nov. 10, 1931 UNITED, STATES PATE NT OFFICE j m BASEL, A CORPORA- TION F SWITZERLAND ARTIFICIAL HOLLOW THREAD MANUFACTURING PROCESS- No brewing. Application filed. April 27, 1928, Serial No.'273,426, and in'Germany April 30,1927,

Persons skilled in the art are aware of the prior artificial hollow thread manufacturing rocesses or methods patents Brandenberger 0. 1,394,270, Rousset No; 1,487,807 and T Brandenberger No. 1,544,631) including those wherein viscose havinga carbonate dis solved therein is spun in an acid bath.-

The spaces or voids produced in the filaments may be formed of 'adjoined bubbles separated by cross partitions. Such threads generally maintain their hollow spaces on account of the rigidity imparted thereto by theircross-partitions.

In other instances, the hollow threads have only a few partitions, or none at all, whereby, and particularly in the case of fine filaments, the outer walls will close in or collapse, somewhat after the manner of a collapsed rubber tube. These threads generally have less covering power than the cross-partitioned ones.

This invention contemplates the manufacturing of hollow threads endowed with a higher covering power, even where the spaces are partitionless.

The process or method constituting the invention is characterized by the fact that acid coagulating baths containing a high propor-' tion of zinc sulphate (practically over 6%) are used. a

In the coagulating bath containing zinc sulphate hitherto used in artificial silk manufacturing practice, the zinc sulphate proportion is aboutl% and, according to DRP Patent No. 260,479, should not exceed 5 in order to avoid noxiousness. On the other hand, English patent discloses baths for hollow thread manufacturing containing zinc sulphate up to 4% and 5%.

Said patents do not cover the use of a relatively large proportion of zinc sulphate in coagulating baths nor do they recognize the remarkable effect arising therefrom as to the covering power of threads so obtained.

The influence of high zinc sulphate proportions on coagulation is such that when the bath contains nothing but sulphuric acid and sulphate of zinc, the latter in a proportion, there is obtained a hollow thread which-weight equal-bulks far more than a any obtained by hitherto known methods.

In addition to sulphuric acid and zinc sulphate, the coagulating bath may also contain sulphate of soda or other coagulating salts, or such products as glucose, which have been found advantageous in the artificial silk industry,

Practical 'ewampZe.-In a normal viscose containing: cellulose 7%, and alkali 6, 5%, &% of carbonate of soda solution is then allowed to ripen or mature until it possesses a salt point of 10 (an explanation of salt point is given in French Patent No. 577,369 dated August 13th, 1923), at which time it is spun in a coagulating bath composed as follows Grams per liter Sulphuric acid 120 Zinc sulphate 220 Sulphate of soda 40 under the conditions required to obtain a unit strand of- 3, 7 dwt.

The thread is then finished according to the usual artificial silk treatment. 7 Having now particularly ascertained and described the nature of my said invention as well as the manner in which the same is to be performed, I declare that what I claim is:

1. In a process of producing hollow artificial silk threads the step which comprises spinning the viscose solution in an acid coagulating bath containing zinc sulphate inexcessof6%. V

2. In a method of producing hollow artificial silk threads the step which comprises spinning the viscose solution in an acid coagulating bath containing 6% to 30% of zinc sulphate.

3. In a process of producing hollow artificial silk threads the step which comprises spinning the viscose solution in a coagulating bath comprising 120 grams per liter of sulphuric acid, 220'grams per liter of zinc sulphate andO grams per liter of sodium sulphate. a p V In testimony whereofI affix my signature.

' RENE PICARD.

is dissolved. The I

US1831030A 1927-04-30 1928-04-27 Artificial hollow thread manufacturing process Expired - Lifetime US1831030A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE1831030X 1927-04-30

Publications (1)

Publication Number Publication Date
US1831030A true US1831030A (en) 1931-11-10

Family

ID=7745148

Family Applications (1)

Application Number Title Priority Date Filing Date
US1831030A Expired - Lifetime US1831030A (en) 1927-04-30 1928-04-27 Artificial hollow thread manufacturing process

Country Status (1)

Country Link
US (1) US1831030A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2479218A (en) * 1944-12-12 1949-08-16 Int Paper Canada Process for making rayon filaments
US2835551A (en) * 1955-04-09 1958-05-20 Toyo Rayon Co Ltd Process for producing hollow viscose filaments
US3204017A (en) * 1962-06-19 1965-08-31 Toho Rayon Kk Process for the manufacture of bulky fibrous wadding materials
US3214234A (en) * 1963-05-21 1965-10-26 Phillips Petroleum Co Oriented foamed polyolefin extrudates and the production and dyeing of the same

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2479218A (en) * 1944-12-12 1949-08-16 Int Paper Canada Process for making rayon filaments
US2835551A (en) * 1955-04-09 1958-05-20 Toyo Rayon Co Ltd Process for producing hollow viscose filaments
US3204017A (en) * 1962-06-19 1965-08-31 Toho Rayon Kk Process for the manufacture of bulky fibrous wadding materials
US3214234A (en) * 1963-05-21 1965-10-26 Phillips Petroleum Co Oriented foamed polyolefin extrudates and the production and dyeing of the same

Similar Documents

Publication Publication Date Title
US2372622A (en) Manufacture and production of artificial threads, filaments, and the like
US2705184A (en) Process for the production of rayon products
US2696423A (en) Viscose modifiers
US1990588A (en) Artificial fibroin thread
US3336429A (en) Method of forming shaped articles of amylose
US2042702A (en) Production or treatment of artificial materials
US2290789A (en) Manufacture and production of artificial filaments, threads, and the like
US2345570A (en) Coagulating bath containing cationactive inhibitors
US2347525A (en) Mutual precipitation of polyamides and cellulose
US2777775A (en) Production of artificial filaments, threads, and the like
US5358679A (en) Manufacture of regenerated cellulosic fiber by zinc free viscose process
US2192074A (en) Manufacture and production of artificial threads, filaments, and the like by the viscose process
US1427330A (en) Manufacture of hollow artificial textile articles
US3030667A (en) Method of preparing amylose film, tubing, and the like
US2145580A (en) Spinning solutions containing organic dyes and products thereof
US2194470A (en) Process and apparatus for the manufacture of artificial silk
US3018158A (en) Viscose process
US3539679A (en) Process for producing polynosic fibers
US2781275A (en) Viscose solution and method of spinning
US2796319A (en) Viscose spinning process
US2327516A (en) Manufacture of artificial filaments and fibers from viscose
US3146116A (en) Cyanoethylation and xanthation of alkali cellulose
GB1393778A (en) Regenerated cellulose filaments
US3109698A (en) Method for making high tenacity regenerated cellulose staple fiber
US2338916A (en) Embodiment in the process for manufacturing artificial textile fibers from animal casein