EP0587361A2 - Schützende Kopfbedeckung - Google Patents

Schützende Kopfbedeckung Download PDF

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Publication number
EP0587361A2
EP0587361A2 EP93306840A EP93306840A EP0587361A2 EP 0587361 A2 EP0587361 A2 EP 0587361A2 EP 93306840 A EP93306840 A EP 93306840A EP 93306840 A EP93306840 A EP 93306840A EP 0587361 A2 EP0587361 A2 EP 0587361A2
Authority
EP
European Patent Office
Prior art keywords
hair net
web
hair
metal
metallic
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.)
Withdrawn
Application number
EP93306840A
Other languages
English (en)
French (fr)
Other versions
EP0587361A3 (en
Inventor
Robert Curry
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.)
HYPROTECT Ltd
Original Assignee
HYPROTECT Ltd
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
Priority claimed from GB929218726A external-priority patent/GB9218726D0/en
Priority claimed from GB939305774A external-priority patent/GB9305774D0/en
Application filed by HYPROTECT Ltd filed Critical HYPROTECT Ltd
Publication of EP0587361A2 publication Critical patent/EP0587361A2/de
Publication of EP0587361A3 publication Critical patent/EP0587361A3/en
Withdrawn legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06H—MARKING, INSPECTING, SEAMING OR SEVERING TEXTILE MATERIALS
    • D06H1/00—Marking textile materials; Marking in combination with metering or inspecting
    • A—HUMAN NECESSITIES
    • A42—HEADWEAR
    • A42B—HATS; HEAD COVERINGS
    • A42B1/00—Hats; Caps; Hoods
    • A42B1/012—Sanitary or disposable, e.g. for use in hospitals or food industry
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B21/00—Warp knitting processes for the production of fabrics or articles not dependent on the use of particular machines; Fabrics or articles defined by such processes
    • D04B21/20—Warp knitting processes for the production of fabrics or articles not dependent on the use of particular machines; Fabrics or articles defined by such processes specially adapted for knitting articles of particular configuration
    • D04B21/207—Wearing apparel or garment blanks
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2501/00—Wearing apparel
    • D10B2501/04—Outerwear; Protective garments
    • D10B2501/042—Headwear

Definitions

  • the present invention relates to protective headwear for use in food manufacturing, processing and preparation industries, and in particular to headwear incorporating features allowing for the detection thereof by means of metal detection systems.
  • hair nets and other similar head coverings are used in order to prevent hair and other contaminants from so contaminating the food products.
  • hair net also encompasses all other forms of such protective headwear.
  • the automatic metal detection systems are, for example, designed to be able to detect metal objects passing thereby within food ingredients in powder, liquid and solid form at various stages of the manufacturing process, as well as within final packaged products.
  • hair nets manufactured without the use of metal staples are disadvantageous, at least in that they may well remain largely undetected, and will certainly not be detectable with the metal detection systems now commonly installed in food processing plants.
  • a hair net formed from a woven or knitted fabric, and including one or more metallic fibres incorporated within said hair net in sufficient quantity to render said hair net metal detectable.
  • a method of manufacturing a plurality of hair nets by knitting two continuous webs of material in overlying relationship, the webs of material including one or more metallic fibres and the webs being joined during the knitting process:
  • a long, continuous web of net material 5 incorporates a net portion including web fibres 12 and two elasticated hems 10 which terminate the lateral edges of the web.
  • the two elasticated hems 10 are brought together at binding portions 14, where two metal staples 16,18 may be applied around the binding portion 14 in order to bind the two elasticated hems 10 and all of the web fibres 12 in the net portion together.
  • the web is then severed between the staples 16,18. Repetition of this operation further down the length of the web results in formation of a hair net 20.
  • the presence of the metal staples 16,18 is undesirable in the food manufacturing environment in that staples may become dislodged and accidentally or maliciously enter the food product.
  • Exemplary prior art techniques for providing the binding function without using metal staples include the use of two knots in the web 5 in place of the staples, fabric ties or, in the case of plastic based webbing material, heat welding the elasticated hems 10 and individual web fibres 12 together. As has been described, this results in the hair net being rendered non-detectable by metal detectors commonly installed in food manufacturing production lines.
  • a long, continuous web of net material 30 incorporates a net portion including web fibres 12 and two elasticated hems 10 which terminate the lateral edges of the web in similar manner to that of figure 1.
  • the two elasticated hems 10 are brought together at binding portions 14, where the elasticated hems 10 and web fibres 12 are bound without using metal staples, for example by knots 32, or other suitable technique as already described with reference to figure 1.
  • the web is severed between knots 32, resulting in formation of hair net 40.
  • the web fibres 12 are typically monofilament plastic threads such as nylon or polyester. Elasticated threads are inserted to create the elasticated hems 10.
  • the web of net material incorporates at regular intervals metallic fibres 34 which, for clarity, are shown in the drawing thicker than the plastic web fibres 12.
  • the metallic fibre 34 is, however, any suitable gauge fibre.
  • the metallic fibre 34 may be a textile yarn containing a certain percentage of stainless steel fibre or other suitable metallic compound, and such yarns are readily available in various types to suit incorporation with the web fibres 12. Alternatively, 100% metal filaments may be used as the metallic fibre.
  • Such filaments or fibres are readily available for use in the manufacture of carpets having antistatic properties, and examples are Bekitex yarn types H54, BK50, or Bekinox VN continuous filament yarns (Bekitex and Bekinox are Registered Trade Marks).
  • the spacing of the metallic fibres 34 in the web material is arranged such that sufficient metal is incorporated within a single hair net 40 to be detectable by a metal detection system as commonly installed in a food production line.
  • the exact spacing of fibres will therefore depend upon a number of factors including: a) the quantity of web material 30 used to make a single hair net 40; b) the quantity of metal in each metallic fibre 34; and c) the sensitivity of the individual metal detection systems being used to the particular metallic fibre being incorporated into the hair net.
  • Metal detection systems depend upon the type and size of product. They are designed to detect over certain distances. Thus for larger objects, such as loaves of bread, more metal may be required to compensate for the distance or cross-sectional area over which the detection system must operate. For smaller objects, such as chocolate bars, the detector can operate over much smaller distances, or cross-sectional areas, and thus smaller quantities of metal area required.
  • the quantity of metallic fibre which must be woven into the hair net is determined empirically with regard to the sensitivity of the detector, and the distance over which it must operate. Allowance must also be made for the likelihood that a hair net will be fragmented by the processing equipment through which it has travelled.
  • the quantity of metallic fibre used should also reflect the extent to which this fragmentation is likely to occur and its effect upon the detectability.
  • the present invention may also be applied to head wear having a close mesh fabric in place of the net material, such as uni-caps or mob-caps.
  • the continuous web of knitted net material 5 as described with reference to figure 1 is typically manufactured using a warp knitting Raschel machine with a single needle bar in conjunction with two or more guide bars.
  • FIG. 3 there is shown a continuous web 30 for the manufacture of a hair net.
  • a warp knitting machine such as a Raschel machine, is used with a two needle bar rather than the single needle bar machine used in the manufacture of the prior art hair nets described with reference to figure 1.
  • a single web 5 of, for example, thirty centimetres width being knitted
  • two webs 132,134 of, for example, approximately fifteen centimetres width are knitted simultaneously using the two needle bar facility. It will be understood that the width of the knitted fabric will be adjustable to suit the particular application.
  • the mechanism of the machine is set such that the two webs 132,134 are knitted together at one longitudinal edge 136 to form a join connecting the two webs 132,134 thereby forming the single web 130.
  • the other two longitudinal edges 140,142 of the webs 132,134 have thin covered rubber or elastic threads 143 of known type included within the webs.
  • the longitudinal edges 140,142 are not mutually joined unlike the edge 136.
  • the knitted webs 132,134 include, at appropriate intervals, metallic fibres (not shown in figure 3).
  • the metallic fibres may be a textile yarn containing a certain percentage of stainless steel fibre or other suitable metallic compound, or 100% metallic filaments, both of which have been previously described with reference to figure 2.
  • the mechanism of the machine is so set as to form a lateral closure in the manner described below.
  • the two longitudinal edges 140,142 containing the elastic threads are thus enclosed in the dense knitted course.
  • the dense knitted course forms a lateral closure construction 144 which continues down the length of the webs 132,134 for a distance "C" of, for example, five to seven millimetres, thereby firmly anchoring the elastic threads within the lateral closure construction.
  • the web is then cut laterally along the knitted lateral closure construction 144 (ie. across the web within the length defined as "C"). No tying, knotting, stapling or other form of closure of the lateral edges produced by the lateral cutting operation is necessary.
  • the net may be likened to an envelope-type structure with the an opening in the left hand side formed by the two elasticated edges 140,142.
  • the hair net may incorporate an elastane fibre yarn such as "Lycra" (a DuPont trade mark). Such a yarn may form part of the knitted construction at the longitudinal edges 140,142, replacing the thin covered rubber threads.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Epidemiology (AREA)
  • Food Science & Technology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Knitting Of Fabric (AREA)
  • Braiding, Manufacturing Of Bobbin-Net Or Lace, And Manufacturing Of Nets By Knotting (AREA)
EP93306840A 1992-09-04 1993-08-27 Protective headwear Withdrawn EP0587361A3 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
GB9218726 1992-09-04
GB929218726A GB9218726D0 (en) 1992-09-04 1992-09-04 Protective headwear
GB9305774 1993-03-19
GB939305774A GB9305774D0 (en) 1993-03-19 1993-03-19 Improvements in and relating to hairnet manufacture

Publications (2)

Publication Number Publication Date
EP0587361A2 true EP0587361A2 (de) 1994-03-16
EP0587361A3 EP0587361A3 (en) 1996-01-03

Family

ID=26301542

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93306840A Withdrawn EP0587361A3 (en) 1992-09-04 1993-08-27 Protective headwear

Country Status (1)

Country Link
EP (1) EP0587361A3 (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010106010A1 (de) 2009-03-17 2010-09-23 Solida Textil- Und Netzwaren-Manufaktur Gmbh & Co. Kg Verfahren zum herstellen von kopfhauben und anordnung aus einer vielzahl von kopfhauben
WO2013156762A1 (en) * 2012-04-16 2013-10-24 Aburnet Limited Knitted hairnet
WO2014111729A1 (en) * 2013-01-17 2014-07-24 Aburnet Limited Hair retention bonnet
US9392856B2 (en) 2013-09-04 2016-07-19 Aburnet Limited Hairnet
GB2566089B (en) * 2017-09-04 2023-04-19 Oceans Of Notions Ltd Packaging for plants, fruit or vegetables

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB698436A (en) * 1951-02-22 1953-10-14 Aura Nets Ltd An improved machine for use in the manufacture of hair nets
DE1457412A1 (de) * 1963-07-08 1969-01-30 Rudolf Horn Fa Haarnetz mit elastischem Rand und Verfahren zu seiner Herstellung
FR2275359A1 (fr) * 1974-06-19 1976-01-16 Greze Andre Voile ayant un pouvoir reflecteur aux ondes radar
DE2900280A1 (de) * 1979-01-05 1980-07-17 Weisert Loser & Sohn Vorrichtung zum feststellen von metall in einem bewegten strang
FR2408814A1 (fr) * 1977-11-14 1979-06-08 Bekaert Sa Nv Procede et appareil pour le reperage et la detection de la position d'un objet
US4551860A (en) * 1982-03-01 1985-11-12 Smit Helen E Metal mesh head covering

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010106010A1 (de) 2009-03-17 2010-09-23 Solida Textil- Und Netzwaren-Manufaktur Gmbh & Co. Kg Verfahren zum herstellen von kopfhauben und anordnung aus einer vielzahl von kopfhauben
CN102341013A (zh) * 2009-03-17 2012-02-01 索利达纺织及网络制造厂有限责任两合公司 制造头套的方法和包括多个头套的组件
US8881747B2 (en) 2009-03-17 2014-11-11 Solida Ag Method for producing hoods and arrangement of a plurality of hoods
CN102341013B (zh) * 2009-03-17 2015-07-29 索利达股份公司 制造头套的方法和包括多个头套的组件
US9820546B2 (en) 2009-03-17 2017-11-21 Solida Ag Method for producing hoods and arrangement of a plurality of hoods
WO2013156762A1 (en) * 2012-04-16 2013-10-24 Aburnet Limited Knitted hairnet
WO2014111729A1 (en) * 2013-01-17 2014-07-24 Aburnet Limited Hair retention bonnet
US9392856B2 (en) 2013-09-04 2016-07-19 Aburnet Limited Hairnet
GB2566089B (en) * 2017-09-04 2023-04-19 Oceans Of Notions Ltd Packaging for plants, fruit or vegetables

Also Published As

Publication number Publication date
EP0587361A3 (en) 1996-01-03

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