US3762220A - Continuous evaluation of yarn crimp - Google Patents

Continuous evaluation of yarn crimp Download PDF

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Publication number
US3762220A
US3762220A US00216835A US3762220DA US3762220A US 3762220 A US3762220 A US 3762220A US 00216835 A US00216835 A US 00216835A US 3762220D A US3762220D A US 3762220DA US 3762220 A US3762220 A US 3762220A
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US
United States
Prior art keywords
yarn
crimp
constant tension
velocity
along
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
US00216835A
Inventor
J Gusack
B Stephens
J Stevens
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.)
Badische Corp
Microdynamics Corp
Original Assignee
Dow Badische Co
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 Dow Badische Co filed Critical Dow Badische Co
Publication of US3762220A publication Critical patent/US3762220A/en
Assigned to BASF CORPORATION reassignment BASF CORPORATION CHANGE OF NAME (SEE DOCUMENT FOR DETAILS). Assignors: BADISCHE CORPORATION, A CORP. OF DE., BASF SYSTEMS CORPORATION A CORP. OF DE., BASF WYANDOTTE CORPORATION A CORP. OF MI (MERGED INTO), GLASURIT AMERICA, INC. A CORP. OF DE., INMONT CORPORATION (CHANGED TO), LIMBACHER PAINT & COLOR WORKS, INC. A CORP. OF DE.
Application granted granted Critical
Publication of US3762220B1 publication Critical patent/US3762220B1/en
Assigned to MICRODYNAMICS CORPORATION, reassignment MICRODYNAMICS CORPORATION, ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: BASF CORPORATION FIBERS DIVISION
Assigned to VISCEGLIA, DIEGO V. reassignment VISCEGLIA, DIEGO V. SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: MICRODYNAMICS CORP., A GA. CORP.
Assigned to QUALTEQ, INC. reassignment QUALTEQ, INC. SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: MICRODYNAMICS CORPORATION
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
    • G01B21/32—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring the deformation in a solid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H51/00—Forwarding filamentary material
    • B65H51/30—Devices controlling the forwarding speed to synchronise with supply, treatment, or take-up apparatus
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/30—Handled filamentary material
    • B65H2701/31—Textiles threads or artificial strands of filaments

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Filamentary Materials, Packages, And Safety Devices Therefor (AREA)
  • Treatment Of Fiber Materials (AREA)

Abstract

Yarn is caused to travel at a velocity w1 under a constant tension sufficient to straighten but insufficient to stretch the yarn. Downstream of the point of application of this tension, a second constant tension is applied to the yarn, the second tension being small enough to allow any crimp in the yarn to be re-formed. The velocity w2 of the yarn traveling past the point of application of the second constant tension is continuously measured, and the crimp along the length of the yarn is continuously evaluated by means of the relationship

Claims (4)

1. A continuous process for evaluation of the crimp along the length of a yarn, which process comprises the following sequential steps: a. Causing the yarn to travel at a velocity w1 under a constant tension sufficient to straighten but not substantially stretch the yarn, and continuously measuring velocity w1; b. Subjecting the traveling yarn, at a point downstream of the application of the first constant tension, to a second constant tension which is small enough to allow any crimp in the yarn to be re-formed; c. Continuously measuring the velocity w2 of the yarn as it travels past the point of application of the second constant tension; and d. Continuously evaluating the crimp along the length of the yarn by means of the relationship Crimp % ((w1-w2)/w1) 100.
2. The process according to claim 1, wherein the yarn is subjected to an environment which affords the development of any latent crimp in the yarn between the points where tension is applied to the yarn.
3. A device for the continuous evaluation of crimp along the length of a yarn, which device comprises: a. Means for causing the yarn to travel along a path at a velocity w1 under a constant tension sufficient to straighten but not substantially stretch the yarn; b. Means along said path for continuously measuring the velocity w1; c. Means for subjecting the traveling yarn, at a point downstream of the application of the first constant tension to a second constant tension small enough to allow crimp in the yarn to be re-formed; d. Means for continuously measuring the velocity w2 of the yarn traveling past the point of application of the second constant tension; and e. Means for continuously computing crimp along the length of the yarn utilizing the relationship Crimp (%) ((w1-w2)/w1) 100.
4. A device according to claim 3, including means for developing latent crimp in the yarn between the points where tension is applied to the yarn.
US00216835A 1972-01-10 1972-01-10 Continuous evaluation of yarn crimp Expired - Lifetime US3762220A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US21683572A 1972-01-10 1972-01-10

Publications (2)

Publication Number Publication Date
US3762220A true US3762220A (en) 1973-10-02
US3762220B1 US3762220B1 (en) 1987-07-21

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ID=22808690

Family Applications (1)

Application Number Title Priority Date Filing Date
US00216835A Expired - Lifetime US3762220A (en) 1972-01-10 1972-01-10 Continuous evaluation of yarn crimp

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US (1) US3762220A (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3899927A (en) * 1972-11-04 1975-08-19 Akzona Inc Method and apparatus for the measurement of crimp contraction
DE2617019A1 (en) * 1976-04-17 1977-10-27 Bayer Ag Measuring crimping of moving fibre tow - using predetermined formula and drawing off tow at specified tension
FR2434369A1 (en) * 1978-08-23 1980-03-21 Inst Textile De France Textile thread length control process - controls speed of thread unwinding from reel using mechanical control and photo-resistive detector
US4295252A (en) * 1979-07-12 1981-10-20 E. I. Du Pont De Nemours & Co. Method for measuring yarn shrinkage and crimp development
US4566319A (en) * 1982-04-09 1986-01-28 Toray Industries, Inc. Process and apparatus for measuring thermal shrinkage properties of yarn
US4918914A (en) * 1986-12-11 1990-04-24 Rieter Scragg Limited Yarn quality monitoring method and apparatus
US20060144122A1 (en) * 2004-11-26 2006-07-06 Charlotte Murrells Yarn snarling testing apparatus and method
US20120144896A1 (en) * 2009-08-12 2012-06-14 Dow Global Technologies Llc Apparatus to determine coefficient of friction

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3333467A (en) * 1964-10-30 1967-08-01 Eastman Kodak Co Method and apparatus for evaluating crimp uniformity

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3333467A (en) * 1964-10-30 1967-08-01 Eastman Kodak Co Method and apparatus for evaluating crimp uniformity

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3899927A (en) * 1972-11-04 1975-08-19 Akzona Inc Method and apparatus for the measurement of crimp contraction
DE2617019A1 (en) * 1976-04-17 1977-10-27 Bayer Ag Measuring crimping of moving fibre tow - using predetermined formula and drawing off tow at specified tension
FR2434369A1 (en) * 1978-08-23 1980-03-21 Inst Textile De France Textile thread length control process - controls speed of thread unwinding from reel using mechanical control and photo-resistive detector
US4295252A (en) * 1979-07-12 1981-10-20 E. I. Du Pont De Nemours & Co. Method for measuring yarn shrinkage and crimp development
US4566319A (en) * 1982-04-09 1986-01-28 Toray Industries, Inc. Process and apparatus for measuring thermal shrinkage properties of yarn
US4918914A (en) * 1986-12-11 1990-04-24 Rieter Scragg Limited Yarn quality monitoring method and apparatus
US20060144122A1 (en) * 2004-11-26 2006-07-06 Charlotte Murrells Yarn snarling testing apparatus and method
US7219556B2 (en) * 2004-11-26 2007-05-22 The Hong Kong Polytechnic University Yarn snarling testing apparatus and method
US20120144896A1 (en) * 2009-08-12 2012-06-14 Dow Global Technologies Llc Apparatus to determine coefficient of friction

Also Published As

Publication number Publication date
US3762220B1 (en) 1987-07-21

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Date Code Title Description
STCF Information on status: patent grant

Free format text: PATENTED FILE - (OLD CASE ADDED FOR FILE TRACKING PURPOSES)

RR Request for reexamination filed

Effective date: 19850124

AS Assignment

Owner name: BASF CORPORATION A CORP. OF DE.

Free format text: CHANGE OF NAME;ASSIGNORS:BADISCHE CORPORATION, A CORP. OF DE.;BASF SYSTEMS CORPORATION A CORP. OF DE.;GLASURIT AMERICA, INC. A CORP. OF DE.;AND OTHERS;REEL/FRAME:004568/0622

Effective date: 19851227

B1 Reexamination certificate first reexamination
AS Assignment

Owner name: MICRODYNAMICS CORPORATION,

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:BASF CORPORATION FIBERS DIVISION;REEL/FRAME:005136/0694

Effective date: 19890713

AS Assignment

Owner name: VISCEGLIA, DIEGO V., GEORGIA

Free format text: SECURITY INTEREST;ASSIGNOR:MICRODYNAMICS CORP., A GA. CORP.;REEL/FRAME:005238/0657

Effective date: 19900111

AS Assignment

Owner name: QUALTEQ, INC.

Free format text: SECURITY INTEREST;ASSIGNOR:MICRODYNAMICS CORPORATION;REEL/FRAME:005405/0289

Effective date: 19900525

CCB Certificate of correction for reexamination