US20020002745A1 - Seat belt webbing and method of dyeing same - Google Patents

Seat belt webbing and method of dyeing same Download PDF

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Publication number
US20020002745A1
US20020002745A1 US09/891,084 US89108401A US2002002745A1 US 20020002745 A1 US20020002745 A1 US 20020002745A1 US 89108401 A US89108401 A US 89108401A US 2002002745 A1 US2002002745 A1 US 2002002745A1
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US
United States
Prior art keywords
webbing
seat belt
oven
dye
range
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.)
Abandoned
Application number
US09/891,084
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English (en)
Inventor
Alan Crawford
James Horton
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.)
Joyson Safety Systems Inc
Original Assignee
Breed Automotive Technology Inc
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 Breed Automotive Technology Inc filed Critical Breed Automotive Technology Inc
Priority to US09/891,084 priority Critical patent/US20020002745A1/en
Assigned to BREED AUTOMOTIVE TECHNOLOGY, INC. reassignment BREED AUTOMOTIVE TECHNOLOGY, INC. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: CRAWFORD, ALAN ROSS, HORTON, JAMES A.
Publication of US20020002745A1 publication Critical patent/US20020002745A1/en
Assigned to CITICORP USA, INC. AS "ADMINISTRATOVE AGENT" AND CITICORP USA, INC. AS TERM C LOAN COLLATERAL AGENT reassignment CITICORP USA, INC. AS "ADMINISTRATOVE AGENT" AND CITICORP USA, INC. AS TERM C LOAN COLLATERAL AGENT SECURITY AGREEMENT Assignors: BREED TECHNOLOGIES, INC.
Assigned to KEY SAFETY SYSTEMS, INC. reassignment KEY SAFETY SYSTEMS, INC. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: BREED AUTOMOTIVE TECHNOLOGY, INC.
Abandoned legal-status Critical Current

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    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06B—TREATING TEXTILE MATERIALS USING LIQUIDS, GASES OR VAPOURS
    • D06B21/00—Successive treatments of textile materials by liquids, gases or vapours
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06B—TREATING TEXTILE MATERIALS USING LIQUIDS, GASES OR VAPOURS
    • D06B19/00—Treatment of textile materials by liquids, gases or vapours, not provided for in groups D06B1/00 - D06B17/00
    • D06B19/0005—Fixing of chemicals, e.g. dyestuffs, on textile materials
    • D06B19/0011—Fixing of chemicals, e.g. dyestuffs, on textile materials by heated air
    • D06B19/0017—Fixing of chemicals, e.g. dyestuffs, on textile materials by heated air the textile material passing through a chamber

Definitions

  • the invention generally relates to a method of dyeing a particular type of seat belt webbing and more particularly to a method of dyeing the blended hybrid fiber and the seat belt generally identified in U.S. Pat. Nos. 5,830,811 and 6,228,488, each of which is incorporated herein by reference.
  • This blended hybrid fiber is of the type known as PET-polycaprolactone diblock copolymer fiber.
  • the fiber has many uses.
  • One such use is within a woven seat belt (webbing) comprising blended hybrid warp and blended hybrid or PET weft fibers.
  • This particular blended hybrid PET fiber displays high elongation rate as compared to the elongation rate of a typically constructed polyester seat belt webbing whose elongation is in the vicinity of 5-14 percent.
  • this type of seat belt stretches in a controlled manner, and absorbs energy while stretching, which lowers the chest and head injury levels that are commonly associated with vehicular crashes and used as a measurement of the efficiency of a safety restraint system.
  • the invention comprises: a process of dying a material including seat belt webbing within a dye range, the material or seat belt comprising a woven polyester and containing blended hybrid PET fibers, the process comprising the steps of: heating the material (webbing) to a preferred range while under tension and subsequently washing, steaming, finish coating and drying the webbing.
  • FIG. 1 shows a generally known dyeing range and process that is adaptable to dye seat belt webbing using synthetic fibers.
  • the following method of dyeing is particularly suited for dyeing material including seat belt webbing (also referred to as a seat belt or webbing) containing a PET-polycaprolactone diblock copolymer fiber.
  • FIG. 1 shows a generally known dyeing process that is adaptable to the present invention.
  • the hybrid blend PET seat belt 10 is padded through a dye bath 20 (the dye bath liquid 22 will also be called liquor) potentially including but not limited to dyestuff (most often disperse dyestuff is used for coloring of the belt), acetic acid, dispersant, chelate, water, carrier, UV absorber and wetter (wetting agent).
  • the liquor does not necessarily have all the chemical components, which may vary from process to process, but must have the colorant (dyestuff) to impart a controlled color to the hybrid blend PET seat belt.
  • the webbing is then passed through a nip point (single or multiple) 24 to squeeze off or otherwise remove the excess dye bath liquor to a relatively consistent amount.
  • the liquor-saturated seat belt is then passed through a heated zone (or pre-drier) 30 with a temperature maintained below 143 C (290 F). At the completion of the heated zone the liquor has been reduced to chemicals not flashed (evaporated off by the heating) and the dyestuff.
  • the seat belt 10 is not dyed at this time but rather weakly stained by the dyestuff.
  • the seat belt is then passed through a tension device most often called a brake unit 40 , which may include a number of rollers and a motor and/or a brake to slow the speed of the rollers.
  • the brake unit can push or run excess seat belt to an oven 50 , which is next in the process flow or can impart excess tension on the seat belt holding back the webbing back from the preferred thermosol oven 50 .
  • This action of the brake unit 40 is one part of controlling the elongation characteristics of the material (webbing 10 ) on the thermosol dye range.
  • the seat belt now enters the oven 50 , the oven for the dyeing process.
  • the thermosol oven is heated to a temperature to allow the seat belt to reach 210 C (410 F).
  • the fiber will soften and an attraction between the disperse dyestuff and the polyester will allow the coloring of the webbing to occur.
  • the softened polyester will be restructured to a new width, thickness, and elongation based on the stretch or over feed of the brake unit 40 and haul unit 60 (the haul unit is further in the process flow and includes for example a motor and rollers). Temperatures of this process are not necessarily absolutely 210 C (410 F).
  • PET seat belt has been in the range of 199 C to 232 C (390 F to 450 F). At temperatures below 199 C (390 F) the PET is very hard to adequately dye and control elongation and at temperatures above 224 C (435 F) the PET tends to weaken and shine.
  • the seat belt upon exit of the thermosol oven, the seat belt enters a water quench unit 70 , which may be a spray or bath.
  • the water quenching has a twofold purpose of aiding in setting the elongation by flash cooling the seat belt and also begins the washing process. However, in the present invention this step must be eliminated.
  • a drain 72 may also be provided.
  • the seat belt does not have a 100% affinity for the disperse dyestuff and of the remaining disperse dyestuff 5-15% must be removed to allow the seat belt to be utilized with out fear of failing dye stability or crock tests.
  • the seat belt next enters the haul unit 60 .
  • the haul unit acts in conjunction with the break unit 40 to impart tension on the seat belt. This tension is the means of controlling the elongation of the seat belt webbing.
  • the haul unit is the lead motor on the dye range and is therefore the speed determining step of the dye range.
  • the seat belt next enters the scour pad 80 .
  • the seat belt is exposed to a scour mix.
  • This scour mix can contain soaps, wetters, dispersants, alkali, water, and reducing agents.
  • the scour mix does not have to contain all the mentioned chemicals and typically does not contain all the chemicals at the same time.
  • the seat belt picks up 5-20% by weight of the scour mix from the pad after passing through the scour pad nip 82 .
  • the seat belt next enters a steamer chest.
  • the steamer chest 90 can be used solely to control the dwell time to allow the scour mix appropriate time to penetrate the web and loosen the unfixed dyestuff.
  • the steamer chest can also be used to heat the web/scour mixture to promote the cleaning of the web.
  • the steamer can be used to increase elongation of the web if the steam temperature is in the range of 93 C-104 C (200-220 F).
  • the seat belt is now washed in a washer 100 .
  • This process involves allowing the web to be immersed or sprayed (see 70 a ) with water in repetitive actions. Between each action a vacuum 102 extraction of the web or a pinching 104 of the web occurs to force the excess water and unattached dyestuff from the web.
  • This process can be run either hot (typically heated with steam, see heater 106 ) or cold. Heated washing can increase elongation marginally but will also improve washing efficiency.
  • the seat belt is now dried.
  • the drying action can be accomplished by steam conduction, infrared drying or heated air convection (numeral 110 shows a dryer). If the seat belt is formed from twisted warp yarn the dyeing process can be completed at this time. If the seat belt is formed from untwisted warp yarn the seat belt may require the additional processes of a protective over-coating and subsequent drying.
  • the drying action is to dry the web to a point of dryness at least equal to the absolute moisture level at ambient atmospheric conditions of at ambient temperature.
  • the seat belt if untwisted warp yarn is used, next enters a finish application 120 .
  • the finish is typically a compound or mixture including but not limited to a wetter, mineral oil, ester or esters, water, and binders, which is available in differing forms from different manufacturers.
  • the finish is applied to untwisted yarn to protect the yarn in abrasion conditions.
  • the finish acts as a lubricant for the seat belt to reduce friction between the belt and any surface the belt contacts.
  • the seat belt if untwisted warp yarn is used and the previously described finish pad step occurs, next enters a final drier 130 .
  • the final drier is used to remove all excess moisture, from the belt, to the absolute moisture level or below the absolute moisture level found at ambient atmospheric conditions.
  • the final drier 130 can be either infrared drying, conductive drying, or convective drying.
  • the present invention refines the process and procedures to produce a material, including an occupant safety seat belt, of the PET-polycaprolactone diblock copolymer yarn.
  • a seat belt this product meets federal occupant requirements outlined in FMVSS 209.
  • Attempting to process the PET-polycaprolactone diblock copolymer fiber under standard dye range conditions, such as outlined above, will not produce an acceptable occupant safety seat belt.
  • the belt will be extremely stiff due to the polycaprolactone component of the fiber melting and resetting.
  • the present invention involves the adjustments to the operation of the dye range to allow the webbing to be processed in such a means as to allow a controlled product that meets FMVSS 209 requirements.
  • the seat belt webbing 10 has the following general characteristics.
  • the belt comprises about 300-440 warp yarn ends of the PET-polycaprolactone diblock copolymer multi-filament fibers.
  • the denier can be in the range of 1000-1500. The end count and denier will vary depending on strength required by the customer.
  • the fill fiber is a conventional polyester used in seat belts having a density of about 15-20 picks per inch depending on pliability desired.
  • the fill yarn denier can vary between 220 to 840 dependent on the desired thickness of the webbing.
  • the preferred method to produce PET-polycaprolactone diblock copolymer seat belt webbing is as follows:
  • the dye range is modified from industry accepted PET production setup.
  • the thermosol temperature (see oven 60 ) is set at 149-167 C (300-330 F) vs. 199-235 C (390-455 F); this gives a maximum exposed operating temperature for the web 10 in the range of about 133-149 C (280-300 F) and preferably 143 C (290 F) (compared to the prior art of 210 (410 F)).
  • the oven can be heated in the range of about 149-167 C (300-330 F).
  • the dye range speed is slowed to allow the material to dwell in the over (thermosol dwell) to be three-five (3-5) minutes instead of the normally used 3 minutes.
  • the steamer 90 is run with a temperature range of 99-105 C (210-220 F). Preferably the dwell time in the steamer is about 2-4 minutes.
  • the wash boxes 106 are run with temperatures between 60-99 C (140-210 F).
  • the thermosol quench 70 is turned off, which permits the disperse dye that is on the fiber to not be reallocated unevenly prior to the dyeing of the caprolactone component of the fiber in the steamer.
  • the dye range is run with the haul unit 2.5-7.0% faster than the brake unit imparting stretch to the seat belt webbing while in the oven.
  • the dye range dye mix formulation (applied at 20 ) is adjusted as follows. A blended aromatic solvent and an organic ester compound such as a monooelate ester carrier is added to the dye bath at 2% by volume. Both a photo stabilizer based on copper complex and a chlorobenzotriazene UV absorber are used in conjunction with the solvent the ester compound. Both UV absorbers can be used up to 5% of the bath dependent on depth of shade and required lightfastness. The dye mix can also contain 20% of a polyester resin fatty acid derivative overcoat.
  • an organic ester compound such as a monooelate ester carrier
  • Both UV absorbers can be used up to 5% of the bath dependent on depth of shade and required lightfastness.
  • the dye mix can also contain 20% of a polyester resin fatty acid derivative overcoat.
  • the scour mix (applied at 80 ) is a mild surfactant formulation is adjusted as follows. A monooelate esters and organic compound carrier is added to the scour mix at 2% of volume.
  • the final, water resistant, overcoat (applied at 120 ) is a perflouroalkylcopolymer emulsion finish.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Textile Engineering (AREA)
  • Materials Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
  • Automotive Seat Belt Assembly (AREA)
  • Coloring (AREA)
US09/891,084 2000-06-26 2001-06-25 Seat belt webbing and method of dyeing same Abandoned US20020002745A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US09/891,084 US20020002745A1 (en) 2000-06-26 2001-06-25 Seat belt webbing and method of dyeing same

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US21419300P 2000-06-26 2000-06-26
US09/891,084 US20020002745A1 (en) 2000-06-26 2001-06-25 Seat belt webbing and method of dyeing same

Publications (1)

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US20020002745A1 true US20020002745A1 (en) 2002-01-10

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US09/891,084 Abandoned US20020002745A1 (en) 2000-06-26 2001-06-25 Seat belt webbing and method of dyeing same

Country Status (4)

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US (1) US20020002745A1 (fr)
EP (1) EP1294972A2 (fr)
AU (1) AU2001270144A1 (fr)
WO (1) WO2002000985A2 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090324949A1 (en) * 2008-06-25 2009-12-31 Nguyen Huy X Method of making colored multifilament high tenacity polyolefin yarns
WO2012021180A1 (fr) * 2010-08-12 2012-02-16 Ykk Corporation Of America Sangle absorbeuse d'énergie rétractable et procédé pour sa fabrication
US9211866B1 (en) 2014-09-10 2015-12-15 Ford Global Technologies, Llc Seatbelt and adjustable buckle presenter assembly
US9328436B2 (en) 2013-03-14 2016-05-03 Ykk Corporation Of America Energy absorbing fabric and method of manufacturing same
US20200023808A1 (en) * 2017-02-27 2020-01-23 Joyson Safety Systems Japan K.K. Occupant restraint belt webbing, seat belt, and seat belt device
CN114657734A (zh) * 2022-02-25 2022-06-24 常州德吉特科技有限公司 一种防腐防霉抗uv的阻燃织带的制备方法及系统

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109281171A (zh) * 2018-09-28 2019-01-29 安徽省永欣织带有限公司 一种防断丝织带涂料的制备方法
CN110318192B (zh) * 2019-06-19 2022-02-08 东莞职业技术学院 一种服装烘干消毒装置
CN115305731A (zh) * 2022-09-23 2022-11-08 郎溪飞马工业织品有限公司 一种安全织带的染色固色生产方法

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3895909A (en) * 1973-06-06 1975-07-22 Burlington Industries Inc Process for thermosol dyeing of polyester fabrics
DE2702831C2 (de) * 1977-01-25 1978-12-21 Hoechst Ag, 6000 Frankfurt Thermosolfärbeverfahren für nichtmodifizierte Polyesterfasern
JP3240674B2 (ja) * 1992-03-19 2001-12-17 タカタ株式会社 シートベルト装置のウェビングの染色方法
US5830811A (en) * 1997-03-18 1998-11-03 Alliedsignal Inc. Load leveling yarns and webbings

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090324949A1 (en) * 2008-06-25 2009-12-31 Nguyen Huy X Method of making colored multifilament high tenacity polyolefin yarns
US8658244B2 (en) * 2008-06-25 2014-02-25 Honeywell International Inc. Method of making colored multifilament high tenacity polyolefin yarns
WO2012021180A1 (fr) * 2010-08-12 2012-02-16 Ykk Corporation Of America Sangle absorbeuse d'énergie rétractable et procédé pour sa fabrication
US9328436B2 (en) 2013-03-14 2016-05-03 Ykk Corporation Of America Energy absorbing fabric and method of manufacturing same
US9211866B1 (en) 2014-09-10 2015-12-15 Ford Global Technologies, Llc Seatbelt and adjustable buckle presenter assembly
US20200023808A1 (en) * 2017-02-27 2020-01-23 Joyson Safety Systems Japan K.K. Occupant restraint belt webbing, seat belt, and seat belt device
CN114657734A (zh) * 2022-02-25 2022-06-24 常州德吉特科技有限公司 一种防腐防霉抗uv的阻燃织带的制备方法及系统

Also Published As

Publication number Publication date
AU2001270144A1 (en) 2002-01-08
EP1294972A2 (fr) 2003-03-26
WO2002000985A2 (fr) 2002-01-03
WO2002000985A3 (fr) 2002-05-30

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Legal Events

Date Code Title Description
AS Assignment

Owner name: BREED AUTOMOTIVE TECHNOLOGY, INC., FLORIDA

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:CRAWFORD, ALAN ROSS;HORTON, JAMES A.;REEL/FRAME:012104/0400

Effective date: 20010711

AS Assignment

Owner name: CITICORP USA, INC. AS "ADMINISTRATOVE AGENT" AND C

Free format text: SECURITY AGREEMENT;ASSIGNOR:BREED TECHNOLOGIES, INC.;REEL/FRAME:014409/0767

Effective date: 20030425

AS Assignment

Owner name: KEY SAFETY SYSTEMS, INC., MICHIGAN

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:BREED AUTOMOTIVE TECHNOLOGY, INC.;REEL/FRAME:014980/0845

Effective date: 20040213

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION