US2976601A - Production of a cellulose staple fiber batting - Google Patents
Production of a cellulose staple fiber batting Download PDFInfo
- Publication number
- US2976601A US2976601A US539291A US53929155A US2976601A US 2976601 A US2976601 A US 2976601A US 539291 A US539291 A US 539291A US 53929155 A US53929155 A US 53929155A US 2976601 A US2976601 A US 2976601A
- Authority
- US
- United States
- Prior art keywords
- batting
- cellulose
- fibers
- staple fibers
- production
- 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
- 239000000835 fiber Substances 0.000 title claims description 53
- 229920002678 cellulose Polymers 0.000 title claims description 31
- 239000001913 cellulose Substances 0.000 title claims description 31
- 238000004519 manufacturing process Methods 0.000 title claims description 11
- 239000003795 chemical substances by application Substances 0.000 claims description 19
- 238000000034 method Methods 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 4
- 150000007524 organic acids Chemical class 0.000 claims 1
- -1 organic acid esters Chemical class 0.000 description 14
- 229920003043 Cellulose fiber Polymers 0.000 description 6
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 6
- 229920002301 cellulose acetate Polymers 0.000 description 6
- 238000007127 saponification reaction Methods 0.000 description 6
- 239000002904 solvent Substances 0.000 description 6
- 210000002268 wool Anatomy 0.000 description 4
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 description 3
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 3
- 239000007767 bonding agent Substances 0.000 description 3
- 238000004581 coalescence Methods 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- 230000001427 coherent effect Effects 0.000 description 2
- 229920001577 copolymer Polymers 0.000 description 2
- SCVFZCLFOSHCOH-UHFFFAOYSA-M potassium acetate Chemical compound [K+].CC([O-])=O SCVFZCLFOSHCOH-UHFFFAOYSA-M 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 241000269350 Anura Species 0.000 description 1
- 229920013683 Celanese Polymers 0.000 description 1
- 229920008347 Cellulose acetate propionate Polymers 0.000 description 1
- DQEFEBPAPFSJLV-UHFFFAOYSA-N Cellulose propionate Chemical compound CCC(=O)OCC1OC(OC(=O)CC)C(OC(=O)CC)C(OC(=O)CC)C1OC1C(OC(=O)CC)C(OC(=O)CC)C(OC(=O)CC)C(COC(=O)CC)O1 DQEFEBPAPFSJLV-UHFFFAOYSA-N 0.000 description 1
- 229920000742 Cotton Polymers 0.000 description 1
- 229920000877 Melamine resin Polymers 0.000 description 1
- 229920000297 Rayon Polymers 0.000 description 1
- 208000036366 Sensation of pressure Diseases 0.000 description 1
- VMHLLURERBWHNL-UHFFFAOYSA-M Sodium acetate Chemical compound [Na+].CC([O-])=O VMHLLURERBWHNL-UHFFFAOYSA-M 0.000 description 1
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Natural products C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 1
- 229920001807 Urea-formaldehyde Polymers 0.000 description 1
- 230000001476 alcoholic effect Effects 0.000 description 1
- 239000012670 alkaline solution Substances 0.000 description 1
- 238000009960 carding Methods 0.000 description 1
- 229920006217 cellulose acetate butyrate Polymers 0.000 description 1
- 229920001727 cellulose butyrate Polymers 0.000 description 1
- 229920006218 cellulose propionate Polymers 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000013023 gasketing Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229920002587 poly(1,3-butadiene) polymer Polymers 0.000 description 1
- 235000011056 potassium acetate Nutrition 0.000 description 1
- 239000002964 rayon Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000001632 sodium acetate Substances 0.000 description 1
- 235000017281 sodium acetate Nutrition 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
- D06M11/32—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with oxygen, ozone, ozonides, oxides, hydroxides or percompounds; Salts derived from anions with an amphoteric element-oxygen bond
- D06M11/36—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with oxygen, ozone, ozonides, oxides, hydroxides or percompounds; Salts derived from anions with an amphoteric element-oxygen bond with oxides, hydroxides or mixed oxides; with salts derived from anions with an amphoteric element-oxygen bond
- D06M11/38—Oxides or hydroxides of elements of Groups 1 or 11 of the Periodic Table
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/44—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling
- D04H1/46—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres
- D04H1/48—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres in combination with at least one other method of consolidation
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
- D06M13/10—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing oxygen
- D06M13/144—Alcohols; Metal alcoholates
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
- D06M13/10—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing oxygen
- D06M13/184—Carboxylic acids; Anhydrides, halides or salts thereof
- D06M13/188—Monocarboxylic acids; Anhydrides, halides or salts thereof
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M23/00—Treatment of fibres, threads, yarns, fabrics or fibrous goods made from such materials, characterised by the process
- D06M23/16—Processes for the non-uniform application of treating agents, e.g. one-sided treatment; Differential treatment
- D06M23/18—Processes for the non-uniform application of treating agents, e.g. one-sided treatment; Differential treatment for the chemical treatment of borders of fabrics or knittings; for the thermal or chemical fixation of cuttings, seams or fibre ends
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06Q—DECORATING TEXTILES
- D06Q1/00—Decorating textiles
- D06Q1/02—Producing patterns by locally destroying or modifying the fibres of a web by chemical actions, e.g. making translucent
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
- Y10T428/2904—Staple length fiber
- Y10T428/2909—Nonlinear [e.g., crimped, coiled, etc.]
Definitions
- This invention relates to batting and relates more particularly to a batting of cellulose staple fibers having a strong, coherent structure.
- An important object of this invention is to provide a novel batting of cellulose staple fibers having a strong, coherent structure which will be suited for a wide variety of uses.
- a further object of this invention is to provide a novel glrjocess for the production of a batting of cellulose staple ers.
- a batting of staple fibers of an organic derivative of cellulose, such as cellulose acetate in which, the individual fibers are interlocked with one another.
- the said batting is then treated with a saponifying agent to convert the cellulose acetate to cellulose, during which process there is a considerable shrinkage of the batting.
- a batting of cellulose staple fibers having a considerable tensile strength and a relatively high density.
- the properties of this batting are in many ways similar to those of a wool felt so that it can replace wool felt in such uses as apparel, including hats, skirts, sportswear and the like. It can also be used for industrial purposes such as pads for machinery, lamps and other articles.
- the batting prepared in accordance with this invention is also suited for use as a gasketing and filtering material.
- the initial batting may be made by any desired method, of which there are many known in the art.
- fibers of a suitable length may be suspended in a stream of fluid, such as air or water, and deposited from said stream on a surface through which the fluid can flow such as a belt pervious to said fluid, a foramino-us member, or the like.
- the staple fibers may be converted into a batting by means of a carding machine.
- the staple fibers going into it the batting may have a denier ranging from about 1, or less, to 30, or more, and may range in length from about 1 inch, or less, to 6 inches, or more.
- the staple fibers may be straight, but preferably have a crimp therein so that they will cling together more readily during the production of the initial batting.
- the staple fibers in the batting are interlocked with one another.
- a preferred way of achieving such interlocking is by treating the batting to cause the fibers to become tangled with one another so that they cannot be readily separated without tearing the individual fibers. This may be readily achieved by needling the initial batting.
- the staple fibers in the batting may also be interlocked with one another through the use of a suitable bonding agent.
- suitable bonding agent examples include butadiene polymers and copolymers, melamine resins, styrene copolymers and ureaformaldehyde resins.
- These bonding agents or a solution thereof in a suitable solvent may be sprayed on or Patent 9 mixed with the staple fibers during the production of the batting or may be sprayed onto or otherwise applied to the batting after it has been formed.
- the batting may then be treated as by heating or the like to drive off the solvent and thereby produce the desired bond between the individual staple fibers at the points where such fibers contact one another.
- a solvent or plasticizing agent for the organic acid ester of cellulose such as acetone, methylene chloride, or the like, to cause the softening of the organic acid ester of cellulose and the coalescence of the fibers at their points of contact, following which, if desired, the solvent or plasticizing agent maybe driven ofi from the batting by means of a stream of evaporative medium.
- the coalescence of the staple fibers through the use of a solvent or plasticizing agent may be accelerated by subjecting said batting to heat, pressure or both.
- the batting it is also possible to subject the batting to the action of heat and, if desired, pres-sure whereby the heat itself will cause a softening of the organic acid ester of cellulose and a coalescence of the staple fibers at their points of contact.
- the action of the heat may be accelerated and lower temperatures made effective if there is incorporated into or applied to the staple fibers a plasticizing agent or latent solvent for the organic acid ester of cellulose.
- the batting is then treated with a saponifying agent to convert the organic acid ester of cellulose to cellulose.
- the saponifying agent may comprise an aqueous or alcoholic solution of a suitable alkaline material such as sodium hydroxide or potassium hydroxide.
- a bufiering agent such as sodium acetate, potassium acetate, or the like to control and make more complete the action of the saponifying agent.
- the saponification of the batting may be carried out on a batch basis by immersing said batting in a vat or the like containing the sapo'nifying agent. It is preferred, however, to carry out the saponification in a continuous manner by passing the batting into, through and out of a vat or the like containing the saponifying agent, the rate of movement of the batting being such as to effect the saponification of the organic acid ester of cellulose. Following the saponification, the batting is advantageously washed to remove therefrom the excess saponifying agent and the salts produced by the saponification, and is finally dried.
- the batting Before the batting is treated with a saponifying agent, it may, if desired, be shaped to form a three-dimensional structure.
- the shaping may be carried out in any desired manner and may beassisted through the use of heat and pressure. In this way, it is possible readily to produce a product of any desired structure.
- the needled batting is then entered into an aqueous bath containing 35% by weight of sodium hydroxide and maintained at 60 C. After three minutes, the batting is removed from the aqueous bath, washed thoroughly with water and dried in a vertically suspended position for 24 hours in a room with a temperature of 70 F, and a relative humidity of 65%.
- the batting obtained in this manner resembles a Wool felt, has a density of 13.5 lbs. per cubic foot.' It has a high strength as compared with the original batting and is well suited for a wide variety of applications.
- Process for the production of a batting of cellulose staple fibers which comprises treating a batting consisti ing essentially of mechanically interlocked organic acid ester of cellulose staple fibers with a saponifying agent to convert the fibers to cellulose fibers, said treatment converting said batting to a material similar to wool felt.
- Process for the production of a batting of cellulose staple fibers which comprises forming a batting consisting essentially of mechanically interlocked organic acid ester of cellulose staple fibers, and treating said batting with a saponifying agent to convert the fibers to cellulose fibers.
- Process for the production of a batting of cellulose staple fibers which comprises forming a batting consisting essentially of organic acid ester of cellulose staple fibers, needling the batting to interlock the fibers therein mechanically, and treating said batting with a saponifying agent to convert the fibers to cellulose fibers.
- Process for the production of a batting of cellulose staple fibers which comprises treating a batting consisting essentially of mechanically interlocked cellulose acetate staple fibers with a saponifying agent to convert the fibers to cellulose fibers.
- Process for the production of a batting of cellulose staple fibers which comprises forming a batting consisting essentially of cellulose acetate staple fibers, needling the batting to interlock the fibers therein mechanically, and treating said batting with a saponifying agent to convert the fibers to cellulose fibers.
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Nonwoven Fabrics (AREA)
Description
PRODUCTION OF A CELLULOSE STAPLE FIBER BATTING Edward T. Powers, Old Greenwich, Conn., assignor to Celanese Corporation of America, New York, NY, a corporation of Delaware Filed Oct. 7, 1955, Ser. No. 539,291
6 Claims. (CI. 28-76) This invention relates to batting and relates more particularly to a batting of cellulose staple fibers having a strong, coherent structure.
An important object of this invention is to provide a novel batting of cellulose staple fibers having a strong, coherent structure which will be suited for a wide variety of uses.
A further object of this invention is to provide a novel glrjocess for the production of a batting of cellulose staple ers.
Other objects of this invention will be apparent from the following detailed description and claims.
According to the present invention, there is formed a batting of staple fibers of an organic derivative of cellulose, such as cellulose acetate, in which, the individual fibers are interlocked with one another. The said batting is then treated with a saponifying agent to convert the cellulose acetate to cellulose, during which process there is a considerable shrinkage of the batting. There is obtained in this way a batting of cellulose staple fibers having a considerable tensile strength and a relatively high density. The properties of this batting are in many ways similar to those of a wool felt so that it can replace wool felt in such uses as apparel, including hats, skirts, sportswear and the like. It can also be used for industrial purposes such as pads for machinery, lamps and other articles. The batting prepared in accordance with this invention is also suited for use as a gasketing and filtering material.
The initial batting may be made by any desired method, of which there are many known in the art. For example, fibers of a suitable length may be suspended in a stream of fluid, such as air or water, and deposited from said stream on a surface through which the fluid can flow such as a belt pervious to said fluid, a foramino-us member, or the like. Alternatively, the staple fibers may be converted into a batting by means of a carding machine. The staple fibers going into it the batting may have a denier ranging from about 1, or less, to 30, or more, and may range in length from about 1 inch, or less, to 6 inches, or more. The staple fibers may be straight, but preferably have a crimp therein so that they will cling together more readily during the production of the initial batting.
The staple fibers in the batting are interlocked with one another. A preferred way of achieving such interlocking is by treating the batting to cause the fibers to become tangled with one another so that they cannot be readily separated without tearing the individual fibers. This may be readily achieved by needling the initial batting.
The staple fibers in the batting may also be interlocked with one another through the use of a suitable bonding agent. Examples of bonding agents that may be used for this purpose are butadiene polymers and copolymers, melamine resins, styrene copolymers and ureaformaldehyde resins. These bonding agents or a solution thereof in a suitable solvent, may be sprayed on or Patent 9 mixed with the staple fibers during the production of the batting or may be sprayed onto or otherwise applied to the batting after it has been formed. The batting may then be treated as by heating or the like to drive off the solvent and thereby produce the desired bond between the individual staple fibers at the points where such fibers contact one another.
Another way in which the staple fibers in the batting may be interlocked with one another is through the potential adhesiveness of the organic acid esters of cellulose of which said staple fibers are composed. Thus,
there may be applied to the batting a solvent or plasticizing agent for the organic acid ester of cellulose, such as acetone, methylene chloride, or the like, to cause the softening of the organic acid ester of cellulose and the coalescence of the fibers at their points of contact, following which, if desired, the solvent or plasticizing agent maybe driven ofi from the batting by means of a stream of evaporative medium. The coalescence of the staple fibers through the use of a solvent or plasticizing agent may be accelerated by subjecting said batting to heat, pressure or both. It is also possible to subject the batting to the action of heat and, if desired, pres-sure whereby the heat itself will cause a softening of the organic acid ester of cellulose and a coalescence of the staple fibers at their points of contact. The action of the heat may be accelerated and lower temperatures made effective if there is incorporated into or applied to the staple fibers a plasticizing agent or latent solvent for the organic acid ester of cellulose.
The batting is then treated with a saponifying agent to convert the organic acid ester of cellulose to cellulose. The saponifying agent may comprise an aqueous or alcoholic solution of a suitable alkaline material such as sodium hydroxide or potassium hydroxide. There may also be present in the said solution a bufiering agent such as sodium acetate, potassium acetate, or the like to control and make more complete the action of the saponifying agent. During the saponification, the organic acid ester of cellulose staple fibers shrink to a considerable extent, due to the reduction in the volume of the said fibers as they are converted to cellulose and also to the shrinkage of the cellulose fibers under the influence of the alkaline solution. This shrinkage greatly increases the density of the batting. It also increases the degree of interlocking of the staple fibers, particularly where such interlocking has been effected through the mechanical tangling of the fibers. As a result, the batting shows a considerable improvement in strength which increases its suitability for many applications where it will be subjected to rough handling. The saponification of the batting may be carried out on a batch basis by immersing said batting in a vat or the like containing the sapo'nifying agent. It is preferred, however, to carry out the saponification in a continuous manner by passing the batting into, through and out of a vat or the like containing the saponifying agent, the rate of movement of the batting being such as to effect the saponification of the organic acid ester of cellulose. Following the saponification, the batting is advantageously washed to remove therefrom the excess saponifying agent and the salts produced by the saponification, and is finally dried.
Before the batting is treated with a saponifying agent, it may, if desired, be shaped to form a three-dimensional structure. The shaping may be carried out in any desired manner and may beassisted through the use of heat and pressure. In this way, it is possible readily to produce a product of any desired structure.
The process of this invention will now be described specifically in connection with a batting of staple fibers of cellulose acetate which is commercially the most important organic acid ester of cellulose at the present time. It may, however, also be used with staple fibers of other organic acid esters of cellulose, including, for example, cellulose propionate, cellulose butyrate, cellulose acetate propionate and cellulose acetate butyrate. There may also be present in the batting a proportion of other fibers such as cotton, rayon, glass or the like.
The following example is given to illustrate this invention further.
Example A batting formed of 12 denier per filament cellulose acetate staple fibers 2 inches long, having a density of 0.46 lb. per cubic foot and a thickness of 2 inches, is passed through a needling machine to produce a batting having a density of 3.68 lbs. per cubic foot and a thickness of inch. The needled batting is then entered into an aqueous bath containing 35% by weight of sodium hydroxide and maintained at 60 C. After three minutes, the batting is removed from the aqueous bath, washed thoroughly with water and dried in a vertically suspended position for 24 hours in a room with a temperature of 70 F, and a relative humidity of 65%. The batting obtained in this manner resembles a Wool felt, has a density of 13.5 lbs. per cubic foot.' It has a high strength as compared with the original batting and is well suited for a wide variety of applications.
It is to be understood that the foregoing detailed description is merely given by way of illustration and that many variations may be made therein without departing from the spirit of my invention.
Having described my invention, what I desire to secure by Letters Patent is:
1. Process for the production of a batting of cellulose staple fibers, which comprises treating a batting consisti ing essentially of mechanically interlocked organic acid ester of cellulose staple fibers with a saponifying agent to convert the fibers to cellulose fibers, said treatment converting said batting to a material similar to wool felt.
2. Process for the production of a batting of cellulose staple fibers, which comprises forming a batting consisting essentially of mechanically interlocked organic acid ester of cellulose staple fibers, and treating said batting with a saponifying agent to convert the fibers to cellulose fibers.
3. Process for the production of a batting of cellulose staple fibers, which comprises forming a batting consisting essentially of organic acid ester of cellulose staple fibers, needling the batting to interlock the fibers therein mechanically, and treating said batting with a saponifying agent to convert the fibers to cellulose fibers.
4. Process for the production of a batting of cellulose staple fibers, which comprises treating a batting consisting essentially of mechanically interlocked cellulose acetate staple fibers with a saponifying agent to convert the fibers to cellulose fibers.
5. Process for the production of a batting of cellulose staple fibers; which comprises forming a batting consisting essentially of cellulose acetate staple fibers, needling the batting to interlock the fibers therein mechanically, and treating said batting with a saponifying agent to convert the fibers to cellulose fibers.
6. Batting produced by the process of claim 3.
References Cited in the file of this patent UNITED STATES PATENTS 1,966,440 Dickie et a1. July 17, 1934 2,118,840 Dreyfus May 31, 1938 2,198,660 Dreyfus Apr. 30, 1940 2,357,392 Francis Sept. 5, 1944 2,437,689 Francis Mar. 16, 1948 2,538,899 Dodge et a1 Jan. 23, 1951 2,647,297 Battista Aug. 4, 1953 2,774,126 Secrist Dec. 18, 1956 2,774,129 Secrist Dec. 18, 1956
Claims (1)
1. PROCESS FOR THE PRODUCTION OF A BATTING OF CELLULOSE STAPLE FIBERS, WHICH COMPRISES TREATING A BATTING CONSISTING ESSENTIALLY OF MECHANICALLY INTERLOCKED ORGANIC ACID ESTER OF CELLULOSE STAPLE FIBERS WITH A SAPONIFYING AGENT TO CONVERT THE FIBERS TO CELLULOSE FIBERS, SAID TREATMENT CONVERTING SAID BATTING TO A MATERIAL SIMILAR TO WOOL FELT.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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US539291A US2976601A (en) | 1955-10-07 | 1955-10-07 | Production of a cellulose staple fiber batting |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US539291A US2976601A (en) | 1955-10-07 | 1955-10-07 | Production of a cellulose staple fiber batting |
Publications (1)
Publication Number | Publication Date |
---|---|
US2976601A true US2976601A (en) | 1961-03-28 |
Family
ID=24150610
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US539291A Expired - Lifetime US2976601A (en) | 1955-10-07 | 1955-10-07 | Production of a cellulose staple fiber batting |
Country Status (1)
Country | Link |
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US (1) | US2976601A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3206351A (en) * | 1961-10-04 | 1965-09-14 | Fiberwoven Corp | Needled fabric structure and method of making same |
US3311445A (en) * | 1963-12-06 | 1967-03-28 | Standard Oil Co | Process of reacting cellulose fibers with carbonyl sulfide and product thereof |
US3342188A (en) * | 1963-12-10 | 1967-09-19 | Lohmann Kg | Smoke filter, especially for tobacco products |
Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1966440A (en) * | 1930-09-10 | 1934-07-17 | Celanese Corp | Textile material and method of making the same |
US2118840A (en) * | 1935-06-08 | 1938-05-31 | Dreyfus Henry | Production of textile threads and fabrics |
US2198660A (en) * | 1935-11-08 | 1940-04-30 | Dreyfus Henry | Treatment of textile and other materials |
US2357392A (en) * | 1941-03-01 | 1944-09-05 | Sylvania Ind Corp | Process for producing fibrous products |
US2437689A (en) * | 1939-10-23 | 1948-03-16 | American Viscose Corp | Process for making needle felts |
US2538899A (en) * | 1944-07-07 | 1951-01-23 | Celanese Corp | Process for the production of batting material |
US2647297A (en) * | 1948-07-10 | 1953-08-04 | American Viscose Corp | Cockled fibrous product of the nonwoven fabric type and method of making it |
US2774129A (en) * | 1950-11-06 | 1956-12-18 | Kendall & Co | Synthetic felts |
US2774126A (en) * | 1950-11-04 | 1956-12-18 | Kendall & Co | Process for making felt-like products |
-
1955
- 1955-10-07 US US539291A patent/US2976601A/en not_active Expired - Lifetime
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US1966440A (en) * | 1930-09-10 | 1934-07-17 | Celanese Corp | Textile material and method of making the same |
US2118840A (en) * | 1935-06-08 | 1938-05-31 | Dreyfus Henry | Production of textile threads and fabrics |
US2198660A (en) * | 1935-11-08 | 1940-04-30 | Dreyfus Henry | Treatment of textile and other materials |
US2437689A (en) * | 1939-10-23 | 1948-03-16 | American Viscose Corp | Process for making needle felts |
US2357392A (en) * | 1941-03-01 | 1944-09-05 | Sylvania Ind Corp | Process for producing fibrous products |
US2538899A (en) * | 1944-07-07 | 1951-01-23 | Celanese Corp | Process for the production of batting material |
US2647297A (en) * | 1948-07-10 | 1953-08-04 | American Viscose Corp | Cockled fibrous product of the nonwoven fabric type and method of making it |
US2774126A (en) * | 1950-11-04 | 1956-12-18 | Kendall & Co | Process for making felt-like products |
US2774129A (en) * | 1950-11-06 | 1956-12-18 | Kendall & Co | Synthetic felts |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3206351A (en) * | 1961-10-04 | 1965-09-14 | Fiberwoven Corp | Needled fabric structure and method of making same |
US3311445A (en) * | 1963-12-06 | 1967-03-28 | Standard Oil Co | Process of reacting cellulose fibers with carbonyl sulfide and product thereof |
US3342188A (en) * | 1963-12-10 | 1967-09-19 | Lohmann Kg | Smoke filter, especially for tobacco products |
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