US2888365A - Sewing thread and method of treating - Google Patents

Sewing thread and method of treating Download PDF

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Publication number
US2888365A
US2888365A US653301A US65330157A US2888365A US 2888365 A US2888365 A US 2888365A US 653301 A US653301 A US 653301A US 65330157 A US65330157 A US 65330157A US 2888365 A US2888365 A US 2888365A
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United States
Prior art keywords
thread
coating
sewing
bobbin
bobbins
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Expired - Lifetime
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US653301A
Inventor
Howard D Corkum
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American Thread Co
Original Assignee
American Thread Co
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Publication date
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Priority to US653301A priority Critical patent/US2888365A/en
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Publication of US2888365A publication Critical patent/US2888365A/en
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Classifications

    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06MTREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M13/00Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
    • D06M13/02Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with hydrocarbons
    • DTEXTILES; PAPER
    • D02YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02GCRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
    • D02G3/00Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
    • D02G3/44Yarns or threads characterised by the purpose for which they are designed
    • D02G3/46Sewing-cottons or the like
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00Stock material or miscellaneous articles
    • Y10T428/29Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
    • Y10T428/2913Rod, strand, filament or fiber
    • Y10T428/2933Coated or with bond, impregnation or core
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00Stock material or miscellaneous articles
    • Y10T428/31504Composite [nonstructural laminate]
    • Y10T428/31801Of wax or waxy material
    • Y10T428/31804Next to cellulosic

Definitions

  • the present invention relates to sewing thread, and has special reference to sewing thread and bobbins for use in sewing machines, and further relates to a method of manufacturing such thread and bobbins.
  • the thread is commonly cross or universal wound
  • the bobbins may have a central core with disks secured on the ends of the core against the mass of wound thread, or the bobbins may be without disks. Also, the bobbins may be coreless and unwound from their centers.
  • One of the objects of the present invention is to provide a sewing thread having a coating of such a nature that when the thread is wound and the bobbin compressed, the thread is effectively held to the thread mass by the correct amount of tack so that it is IE1. part of the mass up to the moment it is drawn away.
  • Another of the objects of the invention is to provide a novel and improved bobbin for sewing machines.
  • Still another of the objects of the invention is to provide a novel and improved method of treating sewing thread, and manufacturing bobbins for sewing machines.
  • the thread is first coated with a pressure-sensitive adhesive.
  • An adhesive of this character which I have found satisfactory is one put out by Angier Products, Inc., under the designation of No. P.S.M. 271-1.
  • This specific material falls in the category of a polyvinyl ether derivative.
  • the material when applied to thread as hereinafter described, crosswound into a bobbin, and the bobbin compressed, provides a surface condition having practically perpetual tackiness or adhesiveness of the desired degree at normal temperatures and to substantially 300 F.
  • This material is prepared in a solvent which may be removed by heat after the thread is coated and before the bobbin is wound.
  • Such adhesives may be prepared from rubber or resin or resinlike materials, or a mixture thereof with pigment materials, such as carbon black and zinc oxide.
  • the composition may involve a natural or synthetic rubber with a resinous material, such as hydrogenated rosins, esters and resinlike materials, either in composition with elastomeric or resin reinforces.
  • These adhesive compositions may be diluted with a solvent vehicle which would normally fall into the classification of aromatic or aliphatic solvents, which are desirable or necessary to facilitate the coating of the perpetually tacky compound to the surface of the sewing thread.
  • the pressure-sensitive adhesive coating may be applied by drawing the thread through it, squeezing off the excess, and running the thread through a heated chamber to remove all of the solvents.
  • the amount of the pressure-sensitive adhesive employed is 2 /2 of the weight of the thread.
  • the thickness of this coating may be varied substantially from 1 to 5% of the thread weight.
  • This second coating preferably comprises microcrystalline wax.
  • This wax is more ductile and tacky than paraffin wax, but less tacky than the pressuresensitive adhesive described, and has a slight degree of lubricating properties.
  • Micro Wax 30 produces satisfactory results. This wax may be applied in any suitable manner as by running it through a hot melt or over a solid disk.
  • This second Micro Wax coating is preferably substantially thinner than the first coating. I have found that substantially 1% by weight of the wax coating is satis factory where the first coating is 2 /2%.
  • the tackiness of the surface of the thread of this compressed bobbin insures that when the bobbin is used in a sewing machine, the unwound portion thereof holds its shape and the thread is withdrawn in a free even flow, forming an even stitch due to the uniform control and release of the thread from the bobbin, and the lubricating properties of the outer coating.
  • My improved coated thread allows a bobbin to be made which will fill the bobbin case to its fullest capacity, and thus permits the maximum amount of thread to be employed.
  • the coatings as described may be used with cotton threads, or synthetic threads, and have the same operating advantages.
  • the coatings reduce any liveliness of the thread that may be present, and reduce the tendency of the thread mass to change in size after the bobbin is made and compressed, thus stabilizing the bobbin for size under varying conditions of temperature and moisture.
  • bobbins thus made with the thread coated as described will effectively withstand the heat that might be developed in using the bobbins in high speed sewing machines or in heavy work, and also is not affected by oil coming into contact with the thread. It has been found that if microcrystalline wax alone is used in the coating, some sewing machines develop so much heat that the wax is melted and then the adhesiveness of the wax is lost, and the bobbin breaks down and the effectiveness of the ⁇ adhesiveness of the wax coating is destroyed. Also, when the thread is coated with microcrystalline wax alone the bobbin is likely to break down when too much oil is applied to the bobbin.
  • a sewing thread of the kind described having a coat ing of pressure-sensitive adhesive, and a second coating of microcrystalline wax over the first coating.
  • An article comprising a sewing thread having coated thereon a pressure-sensitive adhesive of a derivative of polyvinyl ether, and a coating of microcrystalline wax superimposed on the said adhesive.
  • An article comprising a sewing thread having coated thereon a pressure-sensitive adhesive of a derivative of polyvinyl ether, said adhesive coating being about one to five percent by weight of the thread, and a coating of microcrystalline wax superimposed on the said adhesive.
  • An article comprising a sewing thread having coated thereon a pressure-sensitive adhesive of a derivative of polyvinyl ether, said adhesive coating being about one to five percent by weight of the thread, and a coating of microcrystalline wax superimposed on the said adhesive, said wax coating being substantially thinner than said adhesive coating.
  • An article comprising a sewing thread having coated thereon a pressure-sensitive adhesive of a derivative of polyvinyl ether, said adhesive coating being about two and one-half percent by weight of the thread, and a coating of microcrystalline wax superimposed on the said adhesive, said wax coating being about one percent by weight of the thread.
  • the method of treating sewing thread for bobbins of sewing machines which comprises coating the thread with a pressure-sensitive adhesive of a derivative of polyvinyl ether, drying the thus coated thread, and applying a coating of microcrystalline wax over the adhesive coating.
  • the method of treating sewing thread for bobbins of sewing machines which comprises coating the thread with a pressure-sensitive adhesive of a derivative of polyvinyl ether until the coating is about one to five percent by weight of the thread, drying the thus coated thread, and applying a coating of microcrystalline wax over the adhesive coating which is substantially thinner than the adhesive coating.
  • the method of treating sewing thread for bobbins of sewing machines which comprises coating the thread with a pressure-sensitive adhesive of a derivative of polyvinyl ether until the coating is about two and one-half percent by weight of the thread, drying the thus coated thread, and applying a coating of microcrystalline wax over the adhesive coating until the wax coating is about one percent by weight of the thread.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
  • Adhesives Or Adhesive Processes (AREA)

Description

2,888,365 Egfi Patented May 1959' SEWING THREAD AND METHOD OF TREATING Howard D. Corkum, Willimantic, Conn., assignor to The American Thread Company, New York, N.Y., a corporation of New Jersey No Drawing. Application April 17, 1957 Serial No. 653,301
11 Claims. (Cl. 117- 76) The present invention relates to sewing thread, and has special reference to sewing thread and bobbins for use in sewing machines, and further relates to a method of manufacturing such thread and bobbins.
in the manufacture of bobbins for sewing machines, the thread is commonly cross or universal wound, and
after winding the bobbins are compressed from twenty to thirty percent so as to permit the maximum amount of thread to be used for the size of the bobbin case. The bobbins may have a central core with disks secured on the ends of the core against the mass of wound thread, or the bobbins may be without disks. Also, the bobbins may be coreless and unwound from their centers.
Heretofore, difiiculty has been experienced due to the tendency of the thread in the bobbin to overrun or spill from the thread mass during use of the bobbins in sewing machines, and in the case of bobbins provided with end disks to work down between the disks and the thread mass.
One of the objects of the present invention is to provide a sewing thread having a coating of such a nature that when the thread is wound and the bobbin compressed, the thread is effectively held to the thread mass by the correct amount of tack so that it is IE1. part of the mass up to the moment it is drawn away.
Another of the objects of the invention is to provide a novel and improved bobbin for sewing machines.
Still another of the objects of the invention is to provide a novel and improved method of treating sewing thread, and manufacturing bobbins for sewing machines.
In accordance with the present invention, the thread is first coated with a pressure-sensitive adhesive. An adhesive of this character which I have found satisfactory is one put out by Angier Products, Inc., under the designation of No. P.S.M. 271-1. This specific material falls in the category of a polyvinyl ether derivative. The material when applied to thread as hereinafter described, crosswound into a bobbin, and the bobbin compressed, provides a surface condition having practically perpetual tackiness or adhesiveness of the desired degree at normal temperatures and to substantially 300 F. This material is prepared in a solvent which may be removed by heat after the thread is coated and before the bobbin is wound.
Various other pressure sensitive adhesives, however, may be used having the characteristics mentioned. Such adhesives may be prepared from rubber or resin or resinlike materials, or a mixture thereof with pigment materials, such as carbon black and zinc oxide. The composition may involve a natural or synthetic rubber with a resinous material, such as hydrogenated rosins, esters and resinlike materials, either in composition with elastomeric or resin reinforces. These adhesive compositions may be diluted with a solvent vehicle which would normally fall into the classification of aromatic or aliphatic solvents, which are desirable or necessary to facilitate the coating of the perpetually tacky compound to the surface of the sewing thread.
The pressure-sensitive adhesive coating may be applied by drawing the thread through it, squeezing off the excess, and running the thread through a heated chamber to remove all of the solvents.
Preferably the amount of the pressure-sensitive adhesive employed is 2 /2 of the weight of the thread. However, the thickness of this coating may be varied substantially from 1 to 5% of the thread weight.
After the pressure-sensitive adhesive has been run through the heated chamber as described, and is thus dried,
I apply a second coating over the first coating. This second coating preferably comprises microcrystalline wax. This wax is more ductile and tacky than paraffin wax, but less tacky than the pressuresensitive adhesive described, and has a slight degree of lubricating properties. I have found that microcrystalline wax put out by the City Service Company under the designation Micro Wax 30 produces satisfactory results. This wax may be applied in any suitable manner as by running it through a hot melt or over a solid disk.
This second Micro Wax coating is preferably substantially thinner than the first coating. I have found that substantially 1% by weight of the wax coating is satis factory where the first coating is 2 /2%.
The thread thus coated and cross-wound into a bobbin, and the bobbin compressed at normal temperature, results in the thread being held to the thread mass by the correct degree of tack so that it is a part of the mass up to the moment it is drawn away. The tackiness of the surface of the thread of this compressed bobbin insures that when the bobbin is used in a sewing machine, the unwound portion thereof holds its shape and the thread is withdrawn in a free even flow, forming an even stitch due to the uniform control and release of the thread from the bobbin, and the lubricating properties of the outer coating. These combined characteristics are necessary for smooth operation and elimination of the undesirableproperties of normal thread of overrunning or spillage from the thread mass, causing ravelling, pulling down between the disks when disk bobbins are employed, as well as those faults of resinous treated threads which, because of the nature of such a treatment, holds firmly to the thread mass at normal temperatures requiring a greater load that develops into greater and uneven tensions when the thread is pulled from the thread mass of the bobbin.
My improved coated thread allows a bobbin to be made which will fill the bobbin case to its fullest capacity, and thus permits the maximum amount of thread to be employed.
The coatings as described may be used with cotton threads, or synthetic threads, and have the same operating advantages.
The coatings reduce any liveliness of the thread that may be present, and reduce the tendency of the thread mass to change in size after the bobbin is made and compressed, thus stabilizing the bobbin for size under varying conditions of temperature and moisture.
i have found that bobbins thus made with the thread coated as described, will effectively withstand the heat that might be developed in using the bobbins in high speed sewing machines or in heavy work, and also is not affected by oil coming into contact with the thread. It has been found that if microcrystalline wax alone is used in the coating, some sewing machines develop so much heat that the wax is melted and then the adhesiveness of the wax is lost, and the bobbin breaks down and the effectiveness of the \adhesiveness of the wax coating is destroyed. Also, when the thread is coated with microcrystalline wax alone the bobbin is likely to break down when too much oil is applied to the bobbin.
These difficulties are eifectively overcome by first coating the thread with the pressure-sensitive material as described, and then applying the protective wax coating. Bobbins thus made, even without disks, do not break down because of handling, heat developed by the sewing machine, or oil from the sewing machine coming into contact therewith. With the two coatings as described, even though the heat developed melts the thin micro-wax coating, or oil may release the holding power of the wax, the pressure-sensitive undercoating is not affected and the bobbin will stand up. The rnicrowax coating tends to mask the tack of the pressure-sensitive adhesive so that the adhesive does not interfere with the winding of the thread, or the use of the thread in sewing. The wax makes it possible to wind bobbins in the standard manner, then when the bobbins are pressed the pressure-sensitive adhesive takes over as described.
What I claim is:
1. A sewing thread of the kind described having a coat ing of pressure-sensitive adhesive, and a second coating of microcrystalline wax over the first coating.
2. A sewing thread in accordance with claim 1 in which the first coating is substantially two and one-half percent by weight of the thread, and the second coating is substantially one percent of the weight of the thread.
3. A sewing thread in accordance with claim 1 in which the first coating remains tacky at normal temperatures and at elevated temperatures of upwards of 200 F.
4. The method of treating sewing thread for bobbins of sewing machines which comprises coating the thread with a pressure-sensitive adhesive, drying the thus coated thread, and applying a coating of microcrystalline wax over the first coating.
5. An article comprising a sewing thread having coated thereon a pressure-sensitive adhesive of a derivative of polyvinyl ether, and a coating of microcrystalline wax superimposed on the said adhesive.
6. An article comprising a sewing thread having coated thereon a pressure-sensitive adhesive of a derivative of polyvinyl ether, said adhesive coating being about one to five percent by weight of the thread, and a coating of microcrystalline wax superimposed on the said adhesive.
7. An article comprising a sewing thread having coated thereon a pressure-sensitive adhesive of a derivative of polyvinyl ether, said adhesive coating being about one to five percent by weight of the thread, and a coating of microcrystalline wax superimposed on the said adhesive, said wax coating being substantially thinner than said adhesive coating.
8. An article comprising a sewing thread having coated thereon a pressure-sensitive adhesive of a derivative of polyvinyl ether, said adhesive coating being about two and one-half percent by weight of the thread, and a coating of microcrystalline wax superimposed on the said adhesive, said wax coating being about one percent by weight of the thread.
9. The method of treating sewing thread for bobbins of sewing machines which comprises coating the thread with a pressure-sensitive adhesive of a derivative of polyvinyl ether, drying the thus coated thread, and applying a coating of microcrystalline wax over the adhesive coating.
10. The method of treating sewing thread for bobbins of sewing machines which comprises coating the thread with a pressure-sensitive adhesive of a derivative of polyvinyl ether until the coating is about one to five percent by weight of the thread, drying the thus coated thread, and applying a coating of microcrystalline wax over the adhesive coating which is substantially thinner than the adhesive coating.
11. The method of treating sewing thread for bobbins of sewing machines which comprises coating the thread with a pressure-sensitive adhesive of a derivative of polyvinyl ether until the coating is about two and one-half percent by weight of the thread, drying the thus coated thread, and applying a coating of microcrystalline wax over the adhesive coating until the wax coating is about one percent by weight of the thread.
References Cited in the file of this patent UNITED STATES PATENTS 2,200,721 Marinsky May 14, 1940 2,203,286 Simpson June 4, 1940 2,674,215 Thompson et al Apr. 6, 1954 2,732,817 Robinson Jan. 31,, 1956

Claims (1)

1. A SEWING THREAD OF THE KIND DESCRIBE HAVING A COATING OF PRESSURE-SENSITIVE ADHESIVE, AND A SECOND COATING OF MICROCRYSTALLINE WAX OVER THE FIRST COATING.
US653301A 1957-04-17 1957-04-17 Sewing thread and method of treating Expired - Lifetime US2888365A (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3155537A (en) * 1959-02-24 1964-11-03 Du Pont Rope finish
US4086949A (en) * 1977-02-25 1978-05-02 E. I. Du Pont De Nemours And Company Filaments coated with a fatigue reducing finish comprising a poly(vinyl alkyl ether) used as reinforcements in rubber articles
US4273537A (en) * 1975-08-18 1981-06-16 Bernard Borisof Self-adhering educational devices for constructing letters, figures, designs and the like
US5374190A (en) * 1993-04-01 1994-12-20 The Chenille Kraft Company Wax craft product and method of manufacturing

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2200721A (en) * 1939-06-01 1940-05-14 Marinsky Davis Thread spool and the method of constructing the same
US2203286A (en) * 1938-12-19 1940-06-04 William J Simpson Bobbin
US2674215A (en) * 1952-04-03 1954-04-06 Heminway & Bartlett Mfg Co Thread bobbin
US2732817A (en) * 1956-01-31 Bobbin having a controlled unwinding

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2732817A (en) * 1956-01-31 Bobbin having a controlled unwinding
US2203286A (en) * 1938-12-19 1940-06-04 William J Simpson Bobbin
US2200721A (en) * 1939-06-01 1940-05-14 Marinsky Davis Thread spool and the method of constructing the same
US2674215A (en) * 1952-04-03 1954-04-06 Heminway & Bartlett Mfg Co Thread bobbin

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3155537A (en) * 1959-02-24 1964-11-03 Du Pont Rope finish
US4273537A (en) * 1975-08-18 1981-06-16 Bernard Borisof Self-adhering educational devices for constructing letters, figures, designs and the like
US4086949A (en) * 1977-02-25 1978-05-02 E. I. Du Pont De Nemours And Company Filaments coated with a fatigue reducing finish comprising a poly(vinyl alkyl ether) used as reinforcements in rubber articles
US5374190A (en) * 1993-04-01 1994-12-20 The Chenille Kraft Company Wax craft product and method of manufacturing
USRE36272E (en) * 1993-04-01 1999-08-17 The Chenille Kraft Company Wax craft product and method of manufacturing

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