EP0199552A2 - Procédé pour la simulation par ordinateur de l'apparence d'une étoffe tricot-chaîne - Google Patents

Procédé pour la simulation par ordinateur de l'apparence d'une étoffe tricot-chaîne Download PDF

Info

Publication number
EP0199552A2
EP0199552A2 EP86302889A EP86302889A EP0199552A2 EP 0199552 A2 EP0199552 A2 EP 0199552A2 EP 86302889 A EP86302889 A EP 86302889A EP 86302889 A EP86302889 A EP 86302889A EP 0199552 A2 EP0199552 A2 EP 0199552A2
Authority
EP
European Patent Office
Prior art keywords
wale
fabric
yarn
warp knit
average
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.)
Granted
Application number
EP86302889A
Other languages
German (de)
English (en)
Other versions
EP0199552A3 (en
EP0199552B1 (fr
Inventor
Harvey Louis Kliman
Royden Harold Pike
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.)
EIDP Inc
Original Assignee
EI Du Pont de Nemours and 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 EI Du Pont de Nemours and Co filed Critical EI Du Pont de Nemours and Co
Publication of EP0199552A2 publication Critical patent/EP0199552A2/fr
Publication of EP0199552A3 publication Critical patent/EP0199552A3/en
Application granted granted Critical
Publication of EP0199552B1 publication Critical patent/EP0199552B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B37/00—Auxiliary apparatus or devices for use with knitting machines
    • D04B37/06—Auxiliary apparatus or devices for use with knitting machines with warp knitting machines
    • 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
    • D04B21/02—Pile fabrics or articles having similar surface features
    • D04B21/04—Pile fabrics or articles having similar surface features characterised by thread material

Definitions

  • This invention relates to simulating the appearance properties of a warp knit fabric based on properties of the yarn in the fabric.
  • the simulation is comparable to the actual fabric knit from yarn of those properties.
  • the present invention provides a method for simulating actual fabric appearance by just knowing the constituent yarn properties without having to make the actual fabric.
  • the method comprises the steps of obtaining a data set of yarn physical properties for each yarn in the warp knit fabric then programming a digital computer to average the yarn physical properties for each yarn in the fabric according to the stitch pattern of the fabric to produce a wale average property for each wale in the fabric.
  • the pixel density for the graphics display equipment associated with the computer is then calculated from the average wale properties and displayed to represent each wale in the fabric.
  • a warp-knit textile fabric as intended herein is best defined in terms of a stitch pattern as shown in Fig. 1. While many other patterns constituting warp-knitting are possible the one shown represents a jersey tricot warp knit construction. Knitting needle positions for each of five successive wales and courses for the front and back bars are represented in Fig. 1. The horizontal rows of dots represent courses 1-5 while the wales of the fabric are represented by vertical rows of dots A - G. More particularly, referring to Fig. 1 the stitch construction of the fabric is notationally set out and shows that the threads of the front bar indicated as 21-25 have back and forth movement to non-adjacent needles in successive courses and the threads of the back bar, indicated as 31-35 have similar movements.
  • the technology uses a Hewlett Packard HP9845 model 270 to print patterns which model the appearance of jersey warp knit fabrics.
  • Direct printing of simulations requires high resolution graphics and printing capability.
  • the Hewlett Packard HP9845 desktop computer meets both requirements with individual pixel control of graphics on the CRT and printer.
  • Resolution of the HP9845 printer is 77 pixels/inch in both X and Y directions.
  • Initial experiments with various patterns showed that printing alternate rows provided sufficient resolution (38.5 rows/inch vs. 50 wales/inch in the fabric) to represent each wale in a jersey warp knit fabric. Printing alternate rows gives the printouts a subtle linearity resembling the directionality of wales in a warp knit fabric.
  • the first step in the method is obtaining a data set consisting of a yarn property such as denier, modification ratio, yarn shrinkage, or dyeability for each yarn in the fabric.
  • the properties are then averaged according to the stitch pattern in the fabric to produce a wale average property for each wale in the fabric.
  • the simulation program then produces a printout in which the print density (fraction of pixels printed) in each row is given by the equation: wherein
  • K the contrast factor
  • each yarn end for example, 21-25 in Fig. 1, in the fabric is essential for calculating wale average property (v).
  • v wale average property
  • front bar yarns are of more importance than back bar yarns in fabric uniformity because the back bar yarns in warp knit constructions are "sandwiched" in the fabric interior.
  • denier is the property being simulated, it has been found that front bar yarns make a 75% contribution to uniformity and back bar yarns a 25% contribution.
  • front bar yarns make essentially a 100% contribution to uniformity.
  • the weighted wale average property (in this case, denier) for wale C becomes:
  • Step 100 Running the startup program initializes the computer memory for the following steps.
  • Step 300 - A retrieval program is run to load the previously stored pixel rows into the computer memory. Pixel densities from 5% to 95% of the pixels in a graphics display row are included in the data set in steps of 1%. There are 5 rows of pseudorandomly arranged pixels at each density.
  • Step 400 - Yarn property data are averaged according to the description on page 4 to provide wale average property data.
  • the transform program allows keeping both the original yarn data and the wale average data in separate columns in a data matrix.
  • Step 500 - The simulation program is loaded into memory and run.
  • Step 501 - The operator selects the desired data to simulate (more than 1 set of data can be held in memory).
  • Step 502 The computer calculates the average property in the selected data for further calculations (equation on page 3, and fig. 5).
  • Step 503 The operator selects the average print density desired for the simulation. Usually 0.5 is the starting level, and subsequent simulations may be run at higher or lower levels to produce darker or lighter simulations. This step does not affect the printout, unless extreme values are chosen (i.e., near the ends of the allowable scale of 0.05 to 0.95 print density). Refer to "AD" in equation (1), page 3.
  • Step 504 The computer calculates the print density for the first wale using equation (1), page 3.
  • Step 505 - The pixel row data are selected corresponding to the calculated print density.
  • Step 506 - The pixel row is re-randomized. This step is done to extraneous pattern formation in the case that the same pixel density is selected more than 5 times (the number of previously generated pixel rows at each density held in memory) in succession.
  • Step 507 - The pixel row is displayed on the graphics screen of the computer.
  • Step 508 - The pixel row displayed on the screen is transferred to the hard copy printer along with a blank pixel row.
  • Step 509 - The computer checks for additional yarn data, and if available, continues the process from step 504. The program terminates when all the selected data have been printed and the operator signifies that no more simulations are to be run.
  • wale average deniers are calculated according to equation 2 for each wale in the fabric and the pixel density is calculated according to equation 1.
  • the pixel density is displayed in a series of rows to represent each wale in the fabric as shown in Fig. 2 wherein the simulation of the fabric displaying streaks at locations 40 and 41 closely resembles a fabric knit of the actual yarns whose properties were used for the simulation.
  • the simulation was prepared on a Hewlett Packard HP9845 having a thermal printer programmed according to the flow charts shown in Fig. 4.
  • FIG. 3 An enlarged portion of Fig. 2 is shown in Fig. 3 wherein alternate rows are printed to give subtle linearity and one pixel is represented by a square as designated at 50.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Coloring (AREA)
  • Knitting Of Fabric (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Knitting Machines (AREA)
EP86302889A 1985-04-18 1986-04-17 Procédé pour la simulation par ordinateur de l'apparence d'une étoffe tricot-chaîne Expired - Lifetime EP0199552B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US72459985A 1985-04-18 1985-04-18
US724599 1985-04-18

Publications (3)

Publication Number Publication Date
EP0199552A2 true EP0199552A2 (fr) 1986-10-29
EP0199552A3 EP0199552A3 (en) 1987-11-04
EP0199552B1 EP0199552B1 (fr) 1990-07-18

Family

ID=24911069

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86302889A Expired - Lifetime EP0199552B1 (fr) 1985-04-18 1986-04-17 Procédé pour la simulation par ordinateur de l'apparence d'une étoffe tricot-chaîne

Country Status (7)

Country Link
EP (1) EP0199552B1 (fr)
JP (1) JPS626969A (fr)
KR (1) KR860008319A (fr)
BR (1) BR8601696A (fr)
CA (1) CA1258530A (fr)
DE (1) DE3672660D1 (fr)
DK (1) DK176186A (fr)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0458582A2 (fr) * 1990-05-22 1991-11-27 E.I. Du Pont De Nemours And Company Procédé pour déterminer et contrôler les propriétés de brillance de fibres
EP0578975A1 (fr) * 1992-06-18 1994-01-19 Zellweger Luwa Ag Procédé et appareil de prédiction de l'effet de défauts d'un fil sur l'apparence de tissus ou tricots
EP0640707A1 (fr) * 1993-08-31 1995-03-01 SHIMA SEIKI MFG., Ltd. Système de conception de tricot et procédé pour concevoir des étoffes tricotées
US5671061A (en) * 1992-06-18 1997-09-23 Zellweger Luwa Ag Method and apparatus for assessing the effect of yarn faults on woven or knitted fabrics
WO1998016823A1 (fr) * 1996-10-15 1998-04-23 Cis Graphik Und Bildverarbeitung Gmbh Systeme de simulation de fils et de tissus
EP0875611A1 (fr) * 1997-05-02 1998-11-04 Ingenieurbüro Dieter Zweigle Appareil d'optimisation de tissus basé sur des données de fil et procédé d'optimisation
EP0959161A2 (fr) * 1998-05-19 1999-11-24 H. Stoll GmbH & Co. Procédé pour la fabrication d'un article tricoté dans un métier à tricoter
WO2008107440A1 (fr) * 2007-03-08 2008-09-12 Oerlikon Textile Gmbh & Co. Kg Procédé de simulation d'une image affichée d'un produit fibreux formé d'une fibre multicolore ainsi que dispositif pour la mise en œuvre du procédé et procédé de fabrication d'une fibre bcf
CN101124356B (zh) * 2005-02-18 2010-06-23 株式会社岛精机制作所 针织制品的设计装置和设计方法

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6130746A (en) * 1994-03-10 2000-10-10 Lawson-Hemphill, Inc. System and method for electronically evaluating predicted fabric qualities
WO1997047959A1 (fr) * 1996-06-12 1997-12-18 Zellweger Luwa Ag Procede pour l'evaluation des effets de defauts du fil sur des configurations textiles en surface

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1421911A (en) * 1972-06-02 1976-01-21 Wildt Mellor Bromley Ltd Preparation of patterns for knitting machines

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1421911A (en) * 1972-06-02 1976-01-21 Wildt Mellor Bromley Ltd Preparation of patterns for knitting machines

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
MELLIAND TEXTILBERICHTE, vol. 2, February 1984, pages 139-144 Heidelberg; W. REHR "Computer an Textilmaschinen und in Textilbetrieben - gezeigt auf der ITMA 83" *

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0458582A2 (fr) * 1990-05-22 1991-11-27 E.I. Du Pont De Nemours And Company Procédé pour déterminer et contrôler les propriétés de brillance de fibres
EP0458582A3 (en) * 1990-05-22 1992-09-02 E.I. Du Pont De Nemours And Company Method for determining and controlling fiber luster properties
US5299133A (en) * 1990-05-22 1994-03-29 E. I. Du Pont De Nemours And Company Method for determining and controlling fiber luster properties
EP0578975A1 (fr) * 1992-06-18 1994-01-19 Zellweger Luwa Ag Procédé et appareil de prédiction de l'effet de défauts d'un fil sur l'apparence de tissus ou tricots
CN1043910C (zh) * 1992-06-18 1999-06-30 泽韦格-乌斯特有限公司 通过模拟织物图象判断纱线参数的影响的方法和装置
US5671061A (en) * 1992-06-18 1997-09-23 Zellweger Luwa Ag Method and apparatus for assessing the effect of yarn faults on woven or knitted fabrics
EP0853153A2 (fr) * 1993-08-31 1998-07-15 Shima Seiki Manufacturing, Ltd. Système de conception de tricot et procédé pour concevoir des étoffes tricotées
EP0853154A2 (fr) * 1993-08-31 1998-07-15 Shima Seiki Manufacturing, Ltd. Système de conception de tricot et prcédé pour concevoir des étoffes tricotées
EP0853154A3 (fr) * 1993-08-31 1998-10-21 Shima Seiki Manufacturing, Ltd. Système de conception de tricot et prcédé pour concevoir des étoffes tricotées
EP0853153A3 (fr) * 1993-08-31 1998-10-21 Shima Seiki Manufacturing, Ltd. Système de conception de tricot et procédé pour concevoir des étoffes tricotées
EP0640707A1 (fr) * 1993-08-31 1995-03-01 SHIMA SEIKI MFG., Ltd. Système de conception de tricot et procédé pour concevoir des étoffes tricotées
WO1998016823A1 (fr) * 1996-10-15 1998-04-23 Cis Graphik Und Bildverarbeitung Gmbh Systeme de simulation de fils et de tissus
EP0875611A1 (fr) * 1997-05-02 1998-11-04 Ingenieurbüro Dieter Zweigle Appareil d'optimisation de tissus basé sur des données de fil et procédé d'optimisation
WO1998050613A1 (fr) * 1997-05-02 1998-11-12 Ingenieurbüro Dieter Zweigle Dispositif pour l'optimisation de tissus fondee sur des donnees de fil mesurees, et procede d'optimisation
EP0959161A2 (fr) * 1998-05-19 1999-11-24 H. Stoll GmbH & Co. Procédé pour la fabrication d'un article tricoté dans un métier à tricoter
DE19822321A1 (de) * 1998-05-19 1999-11-25 Stoll & Co H Verfahren zur Herstellung eines Gestrickstücks auf einer Strickmaschine
EP0959161A3 (fr) * 1998-05-19 2001-01-03 H. Stoll GmbH & Co. Procédé pour la fabrication d'un article tricoté dans un métier à tricoter
CN101124356B (zh) * 2005-02-18 2010-06-23 株式会社岛精机制作所 针织制品的设计装置和设计方法
WO2008107440A1 (fr) * 2007-03-08 2008-09-12 Oerlikon Textile Gmbh & Co. Kg Procédé de simulation d'une image affichée d'un produit fibreux formé d'une fibre multicolore ainsi que dispositif pour la mise en œuvre du procédé et procédé de fabrication d'une fibre bcf

Also Published As

Publication number Publication date
DK176186D0 (da) 1986-04-17
JPS626969A (ja) 1987-01-13
CA1258530A (fr) 1989-08-15
DK176186A (da) 1986-10-19
KR860008319A (ko) 1986-11-14
EP0199552A3 (en) 1987-11-04
EP0199552B1 (fr) 1990-07-18
BR8601696A (pt) 1986-12-16
DE3672660D1 (de) 1990-08-23

Similar Documents

Publication Publication Date Title
EP0199552B1 (fr) Procédé pour la simulation par ordinateur de l'apparence d'une étoffe tricot-chaîne
EP1020554B2 (fr) Dispositif de conception d'articles à mailles produits dans des machines à tricoter
CN1867723B (zh) 刺绣数据生成装置、刺绣数据的生成方法
US4984181A (en) Method of simulating by computer the appearance properties of a fabric
US6880367B2 (en) Knit design method and device
GB2148545A (en) Apparatus for recording pattern information for knitting machine
US5829487A (en) Method for representing a fabric consisting of warp and weft threads
US6895787B2 (en) Knit design method and apparatus
DE163863T1 (de) Videoanzeigesteuereinheit zur anzeige von beweglichen mustern.
DE3338031C2 (fr)
US7272462B2 (en) Process for producing a knitted fabric
EP1652983A1 (fr) Procede et dispositif destines a la conception de tricot et programme correspondant
US5812110A (en) Method of displaying knit fabric and stitched structure
EP0161298B1 (fr) Methode de production d'un article portant un motif
EP1614787B1 (fr) Procede et dispositif pour conception de tricot
CN110799685B (zh) 使用针织机针织织物的方法以及针织机
Pascual et al. An interactive package for the computer-aided design of woven fabrics
JP2004326483A (ja) 繊維製品のシミュレーション画像生成方法
CN116595775A (zh) 纬编针织物数字化设计方法、装置、设备及可读存储介质
DE3448474C2 (de) Verwendung von codierten Farben, denen gemäß einer Farbcodetabelle Strickinformationen zugeordnet sind, bei der Aufbereitung eines Musters für das Stricken einer Strickware auf einer V-Zweibettflachstrickmaschine
Dooner et al. An interactive graphic and process controlled system for composing and sampling loom constrained designs
CN117166110A (zh) 图画类提花织物及其制作方法
JP2006063479A (ja) 色柄編物用糸およびその製造方法並びに色柄編物およびその製造方法
JPH0121252B2 (fr)
JPH04209865A (ja) パイル織物の製造方法

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): DE FR GB IT NL

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): DE FR GB IT NL

17P Request for examination filed

Effective date: 19880411

17Q First examination report despatched

Effective date: 19880914

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE FR GB IT NL

REF Corresponds to:

Ref document number: 3672660

Country of ref document: DE

Date of ref document: 19900823

ITF It: translation for a ep patent filed

Owner name: ING. C. GREGORJ S.P.A.

ET Fr: translation filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19910212

Year of fee payment: 6

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19910408

Year of fee payment: 6

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19910424

Year of fee payment: 6

ITTA It: last paid annual fee
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 19910430

Year of fee payment: 6

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Effective date: 19920417

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Effective date: 19921101

GBPC Gb: european patent ceased through non-payment of renewal fee
NLV4 Nl: lapsed or anulled due to non-payment of the annual fee
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Effective date: 19921230

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Effective date: 19930101

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 20050417