EP1010792A2 - Tricot élastique tubulaire et procédé de son obtention - Google Patents

Tricot élastique tubulaire et procédé de son obtention Download PDF

Info

Publication number
EP1010792A2
EP1010792A2 EP99500044A EP99500044A EP1010792A2 EP 1010792 A2 EP1010792 A2 EP 1010792A2 EP 99500044 A EP99500044 A EP 99500044A EP 99500044 A EP99500044 A EP 99500044A EP 1010792 A2 EP1010792 A2 EP 1010792A2
Authority
EP
European Patent Office
Prior art keywords
film
elastic
ribbons
obtaining
chains
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
EP99500044A
Other languages
German (de)
English (en)
Other versions
EP1010792B1 (fr
EP1010792A3 (fr
Inventor
Ezequiel Giro Amigo
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.)
Gimar SL
Original Assignee
GIMAR SA
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 GIMAR SA filed Critical GIMAR SA
Publication of EP1010792A2 publication Critical patent/EP1010792A2/fr
Publication of EP1010792A3 publication Critical patent/EP1010792A3/fr
Application granted granted Critical
Publication of EP1010792B1 publication Critical patent/EP1010792B1/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
    • 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
    • D04B21/10—Open-work fabrics
    • D04B21/12—Open-work fabrics characterised by thread material
    • 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
    • D10B2401/00—Physical properties
    • D10B2401/06—Load-responsive characteristics
    • D10B2401/061—Load-responsive characteristics elastic
    • 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
    • D10B2505/00—Industrial
    • D10B2505/10—Packaging, e.g. bags

Definitions

  • the object of the present Patent application is an elastic tubular knitted fabric and a process for obtaining the same which, in addition to the function for which it was designed, contributes a number of advantages that shall be set out hereinafter, besides others inherent in the arrangement and construction thereof.
  • the invention lies in an elastic tubular knitted fabric made of thermoplastic polymer and a method for making the same in order to obtain a net that is both elastic and has an ultimate elongation such as to combine the compression and adaptability of the extruded net perfectly with the advantages of a flexible and scarcely rigid conventional knitted net. Furthermore, due to the characteristics of the thermoplastic with which it is made, the inventive net greatly improves such properties as the flexibility and scarce rigidity of a conventional knitted net.
  • the tubular net of the invention is especially suited for packing products in line, such as garlic, onions, etc., or when the net is required to adapt to the shape of the product contained, for the extent of compression exerted on the packed product may be varied at will due to its elasticity. It is moreover especially suitable for packing frail products, being as it is that there is an almost negligible chance of damaging the packed product due to its great flexibility, not heretofore achieved by any net.
  • the elastic tubular net subject of the invention can be used in any of the packing machines existing in the market, be they manual, semiautomatic or automatic, without a seal, with a staple or weld seal.
  • Plastic or paper bags, Raschel fabric sacks and either knitted or extruded tubular net bags have heretofore been used in order for such fruit and vegetable products as citrus fruits, potatoes, onions and the like to be packed.
  • Tubular net has become the most widely used material for bags weighing up to five kilograms.
  • Knitted tubular net has a number of advantages over extruded tubular net, such as offering a better ratio between strength and weight of the net, less quantity and volume of plastic material per bag, lowering the cost of recycling, greater flexibility which allows a greater length to be loaded on the tube of the packing machine, less thickness and rigidity which makes it more suitable for frail products, and allowing a wide range of openwork shapes to be provided, such as diamonds, hexagons, rectangles, etc., whereas extruded net may only have a diamond-shaped openwork.
  • the elastic tubular knitted fabric of the present invention is obtained by means of a process comprising making an elastic film, essentially made of a thermoplastic polymer, a pigmentary dispersion and a lubricating agent, obtained in an extrusion process with certain dimensional ratios between the opening for the outlet of material, in the extruder head, and the sheet of film; cutting and stretching the film in certain conditions as to stretch and temperature ratio; and knitting the resultant ribbons with a preferred loop structure so that the tubular fabric has an ultimate elongation and an elastic limit respectively in excess of 100% and 20%.
  • thermoplastic polymer is an ethyleneoctene copolymer
  • the pigmentary dispersion is a pigment dispersion devoid of such extenders as titanium dioxide in low density polyethylene
  • the lubricating agent is a fatty amide lubricant.
  • the dimensional ratios between the opening for the outlet of material, in the extruder head, and the sheet of film consist of a value of approximately 17 for the ratio between the thickness of the opening for the outlet of material and the thickness of the film, and a value of approximately 0.7 for the ratio between the perimeter for the outlet of material and the width of the sheet of film.
  • Said film is cut and stretched to form ribbons suitable to be knitted, with a stretch ratio of less than 1:4 and a temperature not in excess of 50 degrees centigrade.
  • the resultant ribbons are all knitted preferably forming a tubular loop structure, with chains of loops running parallel to the longitudinal axis of the tubular fabric, and ribbons perpendicular to said axis interconnecting the chains of loops.
  • the chains of loops running parallel to the longitudinal axis are formed by two types of ribbons, one type being knitted only into said chains, and others which are perpendicular to the longitudinal axis and interconnect the chains of loops, preferably in a sequence of one loop consisting of one type of ribbon and the adjacent loop consisting of the other type of ribbon. Both types of ribbons can have different dimensions and their use in the loop structure may be unequal.
  • the fabric has an ultimate elongation in excess of 100% and an elastic limit in excess of 20%, and a tensile stress elastic rebound in excess of 25% when stretched beyond 40%; the loop structure being preferably one in which the ribbons forming the structure are cut and stretched in certain conditions as to stretch and temperature ratio.
  • An outstanding property of the inventive tubular knitted fabric is that a high elasticity and ultimate elongation are successfully achieved, the tensile strength of the net being in excess of 6.5 kg of strength per gram of weight of the linear metre, which renders the net suitable as concerns its strength to make the most usual bags, i.e. weighing up to 4 kg.
  • tubular knitted fabric of the invention The following are the most outstanding physical characteristics of the tubular knitted fabric of the invention, compared with those of standard tubular knitted fabrics made with high density polyethylene (HDPE).
  • Inventive Fabric Standard Fabric (HDPE) Ultimate elongation 160% 20% Elastic limit 30% Negligible Relative elongation 3.2 %/kg 0.3 %/kg
  • the ultimate elongation is the deformation the net suffers, as a percentage of the initial length, when it is applied sufficient tensile stress to be broken.
  • the elastic limit is the percentage elongation, with reference to the initial length, which the net may suffer when it is applied a tensile stress, so as to retrieve its initial length when said stress stops acting.
  • Relative elongation is the deformation the net suffers, as a percentage over the initial length, for every kilogram of tensile stress exerted.
  • Tensile strength is the maximum tensile stress the net can stand until it breaks divided by the weight in grams of a linear metre.
  • Figure 1 Is a partial perspective view of an elastic tubular knitted fabric obtained by means of the process according to the invention.
  • the same shows a preferred embodiment, which does not however limit the invention, consisting of an elastic tubular knitted fabric made with the process described above, wherein the resultant ribbons are knitted so as to form a tubular loop structure as shown in figure 1, and may be seen therein to have chains of loops -1- running parallel to the longitudinal axis -5- of the fabric, and ribbons -2-perpendicular to said axis -5- and parallel to the cross axis -6- of the fabric, interconnecting the chains of loops.
  • the chains of loops -1- running parallel to the longitudinal axis also comprise two types of ribbons, some -3- knitted only into said chains and others -4- perpendicular to the longitudinal axis, interconnecting the chains of loops -1- in a sequence of one loop comprising one type of ribbon, whereas the adjacent loop is made of the other type of ribbon.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Knitting Of Fabric (AREA)
  • Prostheses (AREA)
  • Braiding, Manufacturing Of Bobbin-Net Or Lace, And Manufacturing Of Nets By Knotting (AREA)
EP99500044A 1998-12-15 1999-03-17 Tricot élastique tubulaire et procédé de son obtention Expired - Lifetime EP1010792B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ES9802596 1998-12-15
ES009802596A ES2154197B1 (es) 1998-12-15 1998-12-15 Tejido de punto tubular elastico y procedimiento para su obtencion.

Publications (3)

Publication Number Publication Date
EP1010792A2 true EP1010792A2 (fr) 2000-06-21
EP1010792A3 EP1010792A3 (fr) 2001-02-07
EP1010792B1 EP1010792B1 (fr) 2003-09-03

Family

ID=8306084

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99500044A Expired - Lifetime EP1010792B1 (fr) 1998-12-15 1999-03-17 Tricot élastique tubulaire et procédé de son obtention

Country Status (4)

Country Link
EP (1) EP1010792B1 (fr)
AT (1) ATE248942T1 (fr)
DE (1) DE69910959T2 (fr)
ES (1) ES2154197B1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2278500A1 (es) * 2005-06-20 2007-08-01 Giro Gh, S.A. Malla para bolsas o envases.
EP3517669A3 (fr) * 2017-12-27 2019-09-11 Badalona PAC, S.L. Procédé de fabrication d'un filet tricoté tubulaire bi-élastique et filet tubulaire résultant

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2277689B1 (es) * 2002-09-23 2008-07-01 Giro Gh, S.A. Procedimiento y red para impedir la penetracion del hormigon en los orificios de piezas huecas para la construccion.

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3645299A (en) * 1966-10-25 1972-02-29 Chemiefaser Lenzing Ag Process for the production of foil ribbon fabrics and apparatus for carrying out this process
US4060999A (en) * 1974-11-05 1977-12-06 Enterprise Incorporated Method and apparatus for forming yarn elements and producing products therefrom
US4402409A (en) * 1981-11-12 1983-09-06 Conwed Corporation Remarkable superior plastic netting for use in palletized loads
US5104714A (en) * 1989-11-30 1992-04-14 Tama Plastic Industry Elastic plastic netting made of oriented strands
US5664306A (en) * 1992-07-09 1997-09-09 Tama Plastic Industry Apparatus and method for producing colored knitted net

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2278500A1 (es) * 2005-06-20 2007-08-01 Giro Gh, S.A. Malla para bolsas o envases.
ES2278500B1 (es) * 2005-06-20 2008-06-16 Giro Gh, S.A. Malla para bolsas o envases.
EP3517669A3 (fr) * 2017-12-27 2019-09-11 Badalona PAC, S.L. Procédé de fabrication d'un filet tricoté tubulaire bi-élastique et filet tubulaire résultant

Also Published As

Publication number Publication date
EP1010792B1 (fr) 2003-09-03
DE69910959T2 (de) 2004-06-09
EP1010792A3 (fr) 2001-02-07
ES2154197B1 (es) 2001-09-01
ATE248942T1 (de) 2003-09-15
ES2154197A1 (es) 2001-03-16
DE69910959D1 (de) 2003-10-09

Similar Documents

Publication Publication Date Title
US5885686A (en) Bicomponent elastomeric netting
US6391420B1 (en) Bicomponent elastomeric netting
DE69815129T2 (de) Offenmaschiger beutel und herstellungsverfahren
DE4037738C2 (de) Elastisches Kunststoffnetzwerk zum Verpacken von Paletten und Verfahren zu dessen Herstellung
DE68928948T2 (de) Materialien für Fallschirme
US3178910A (en) Net for wrapping up sausages and meat products
US4853275A (en) Cushioned strap
DE2800899A1 (de) Molekular orientiertes kunststoffband sowie verfahren und vorrichtung zur herstellung desselben
WO1996039463A1 (fr) Film etirable a forte elasticite pour l'emballage de palettes
EP1776023B1 (fr) Element de fixation pour zones d'extremite de vetements a fixer l'une avec l'autre
JP3582854B2 (ja) 糸状又は帯状塑性変形性ポリエチレン材料及びその製造方法
EP1010792A2 (fr) Tricot élastique tubulaire et procédé de son obtention
DE69417759T2 (de) Stabilisierte gewebe und verstärkte gegenstände, die sie enthalten
CA2203642C (fr) Perfectionnement du nouage des filets elastiques
EP1736583A1 (fr) Filet de mailles pour sacs ou emballages
EP0627986B1 (fr) Filet elastomere a deux constituants
DE102013020683A1 (de) Vorrichtung zum Verpacken mehrerer Arten von Gütern
EP1364888A1 (fr) Récipient pour fruits et légumes
EP1908694A1 (fr) Elément intermédiaire pour des emballages en particulier pour les produits horticoles et pour des produits alimentaires en général, avec machines d'emballer et conditionnement ainsi producible
WO2002074134A1 (fr) Combinaison de bandes permettant de positionner des lattes dans un sommier a lattes
KR20100097128A (ko) 인공 모발용 섬유의 곤포 방법 및 곤포체
JP2000095267A (ja) プラスチック結束タイ及びその製造方法
JP3694818B2 (ja) 弾性ゴム製品
DE9321379U1 (de) Variables Formteil insbesondere aus nachwachsenden Rohstoffen
CN219008581U (zh) 一种环保型抗拉伸的可降解编织袋

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): AT BE CH CY DE DK FI FR GB GR IE IT LI LU MC NL PT SE

AX Request for extension of the european patent

Free format text: AL PAYMENT 19990415;LT PAYMENT 19990415;LV PAYMENT 19990415;MK PAYMENT 19990415;RO PAYMENT 19990415;SI PAYMENT 19990415

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

AX Request for extension of the european patent

Free format text: AL PAYMENT 19990415;LT PAYMENT 19990415;LV PAYMENT 19990415;MK PAYMENT 19990415;RO PAYMENT 19990415;SI PAYMENT 19990415

AKX Designation fees paid

Free format text: AT BE CH CY DE DK FI FR GB GR IE IT LI LU MC NL PT SE

AXX Extension fees paid

Free format text: AL PAYMENT 19990415;LT PAYMENT 19990415;LV PAYMENT 19990415;MK PAYMENT 19990415;RO PAYMENT 19990415;SI PAYMENT 19990415

17P Request for examination filed

Effective date: 20010806

17Q First examination report despatched

Effective date: 20011129

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: GIMAR, S.L.

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH CY DE DK FI FR GB GR IE IT LI LU MC NL PT SE

AX Request for extension of the european patent

Extension state: AL LT LV MK RO SI

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

Ref country code: LI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20030903

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20030903

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20030903

Ref country code: CH

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20030903

Ref country code: BE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20030903

Ref country code: AT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20030903

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REF Corresponds to:

Ref document number: 69910959

Country of ref document: DE

Date of ref document: 20031009

Kind code of ref document: P

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

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

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20031203

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20031203

REG Reference to a national code

Ref country code: GR

Ref legal event code: EP

Ref document number: 20030404891

Country of ref document: GR

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

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20040203

LTIE Lt: invalidation of european patent or patent extension

Effective date: 20030903

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

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

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20040317

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20040317

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

Ref country code: MC

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20040331

ET Fr: translation filed
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

Effective date: 20040604

REG Reference to a national code

Ref country code: IE

Ref legal event code: MM4A

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

Ref country code: GB

Payment date: 20050316

Year of fee payment: 7

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

Ref country code: GR

Payment date: 20050317

Year of fee payment: 7

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

Ref country code: DE

Payment date: 20050321

Year of fee payment: 7

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

Ref country code: NL

Payment date: 20050330

Year of fee payment: 7

Ref country code: FR

Payment date: 20050330

Year of fee payment: 7

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

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20060317

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

Ref country code: IT

Payment date: 20060331

Year of fee payment: 8

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

Ref country code: NL

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20061001

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

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20061003

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20060317

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee

Effective date: 20061001

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20061130

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

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20060331

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

Ref country code: GR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20061002

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

Effective date: 20070317