EP2439323B1 - Elément composite pour une fermeture autogrippante - Google Patents

Elément composite pour une fermeture autogrippante Download PDF

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Publication number
EP2439323B1
EP2439323B1 EP10187056.6A EP10187056A EP2439323B1 EP 2439323 B1 EP2439323 B1 EP 2439323B1 EP 10187056 A EP10187056 A EP 10187056A EP 2439323 B1 EP2439323 B1 EP 2439323B1
Authority
EP
European Patent Office
Prior art keywords
adhesive
knitted fabric
hook
composite element
warp strands
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.)
Not-in-force
Application number
EP10187056.6A
Other languages
German (de)
English (en)
Other versions
EP2439323A1 (fr
Inventor
Dieter Homölle
Georg Baldauf
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.)
Nitto Advanced Film Gronau GmbH
Original Assignee
Mondi Gronau GmbH
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 Mondi Gronau GmbH filed Critical Mondi Gronau GmbH
Priority to EP10187056.6A priority Critical patent/EP2439323B1/fr
Priority to MX2011010588A priority patent/MX339885B/es
Priority to US13/269,070 priority patent/US20120088061A1/en
Priority to CA2754365A priority patent/CA2754365A1/fr
Priority to JP2011223884A priority patent/JP5981702B2/ja
Publication of EP2439323A1 publication Critical patent/EP2439323A1/fr
Application granted granted Critical
Publication of EP2439323B1 publication Critical patent/EP2439323B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • D04B21/02—Pile fabrics or articles having similar surface features
    • A—HUMAN NECESSITIES
    • A44—HABERDASHERY; JEWELLERY
    • A44B—BUTTONS, PINS, BUCKLES, SLIDE FASTENERS, OR THE LIKE
    • A44B18/00—Fasteners of the touch-and-close type; Making such fasteners
    • A44B18/0023—Woven or knitted fasteners
    • A44B18/0034—Female or loop elements
    • 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
    • D10B2403/00—Details of fabric structure established in the fabric forming process
    • D10B2403/01—Surface features
    • D10B2403/011—Dissimilar front and back faces
    • D10B2403/0112—One smooth surface, e.g. laminated or coated
    • 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
    • D10B2501/06—Details of garments
    • D10B2501/063—Fasteners
    • D10B2501/0632—Fasteners of the touch-and-close type
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24008—Structurally defined web or sheet [e.g., overall dimension, etc.] including fastener for attaching to external surface
    • Y10T428/24017—Hook or barb

Definitions

  • the invention relates to a composite element for a hook and loop fastener, comprising a carrier and a textile knitted fabric running on the support, which has warp strands extending in the direction of action and loops which are integrated therein and which are suitable for connection with hook-and-loop fasteners, wherein the support and the knitted fabric are not connected to one another over the entire surface.
  • an adhesive forms a grid pattern with vertically crossing adhesive strips and adhesive-free cells, and wherein the one group of adhesive strips extends in the direction of action.
  • the composite element forms the female part of a hook and loop fastener and is particularly intended for use on diapers.
  • the composite element When used on diapers, the composite element is applied to the front cuff area of the diaper.
  • a fastener tape which is attached to the side of the diaper and has at its free end hooks, completes the hook and loop fastener.
  • Velcro closures can be opened and closed multiple times without compromising the functionality of the closure. In contrast to adhesive closures, velcro closures are insensitive to contact with skin creams or powders.
  • the knitted fabric produced as knitted fabric usually consists of polymer yarns, monofilament and / or multifilament yarns can be used to form the knit, which consist for example of polypropylene, polyester, polyamide or other synthetically processable plastics.
  • the transverse direction corresponds to the preferred direction of the opening for the consumer, the longitudinal direction is oriented perpendicular thereto.
  • the intended for the connection with the Velcro knitted fabric should on the one hand ensure sufficient entanglement with Velcro hooks of the associated fastener tape and on the other hand have a low basis weight, so that the lowest possible manufacturing costs can be achieved.
  • a sufficient number of freely movable loops and fibers is required, the function of which may not be impaired by a bonding of the carrier to the knitted fabric.
  • the knitted fabric must be made so stable and sufficiently connected by the adhesive to the carrier that tearing and tearing can be avoided even with multiple operation of the hook and loop fastener.
  • a composite element with the features described above is known from WO 2006/045118 A1 and the EP 2030600 A2
  • the application of adhesive in a grid pattern with straight, vertically crossing adhesive strips is presented as a possible option.
  • the adjacent strips of adhesive running in the direction of action have the same spacing as two adjacent warp strands.
  • the warp strands have an offset relative to the directionally extending adhesive strips, all warp strands are attached only to the transversely extending adhesive strip, so that the bond strength decreases significantly.
  • the bond strength on the one hand and the Velcro effect on the other hand can vary significantly.
  • the amount of adhesive must be selected so that even with a misalignment still sufficient bond strength is ensured.
  • a printed carrier made of a nonwoven material is used, wherein the carrier and the cover layer are connected by adhesive, which is applied in a pattern with adhesive surfaces and adhesive-free surfaces.
  • the invention has for its object to provide a composite element for a hook and loop fastener with the features described above, which is inexpensive to manufacture and in addition increased Velcro in both force directions, d. H. in the longitudinal and transverse directions and in the angles between.
  • a composite element according to claim 1 wherein a plurality of warp strands are provided between two adjacent, running in the direction of effect adhesive strip. It is usually provided that the perpendicularly crossing adhesive strips run straight and thus form a grid pattern with rectangular adhesive-free cells.
  • the warp strands, which are arranged between two adjacent adhesive strips running in the direction of action, are fastened correspondingly only to the adhesive strips running perpendicular to the direction of action.
  • the adhesive pattern is formed not only from perpendicular to each other running, straight adhesive strip, but also aligned in a predetermined arrangement with respect to the knitted fabric, so that the adhesive strips are parallel to the warp strands in the direction of action or perpendicular to the warp strands.
  • the adhesive strips are parallel to the warp strands in the direction of action or perpendicular to the warp strands.
  • a far-reaching bonding of the knitted fabric so that locally there is the ability to connect with the Velcro hooks reduced.
  • adhesive strips are several, for example, provided between two and ten warp strands, which are attached only to the running perpendicular to the effective direction of adhesive strips, so that in the range of this warp strands easier hooking with hook and loop is possible.
  • the Velcro hooks can not only easily engage in the free loops, but also in the other threads of the knitted fabric in the adhesive-free areas. The best local velcro effect is to be expected in the adhesive-free cells, where the knitted fabric is not connected to the wearer and is thus freely movable.
  • a plurality of warp strands extend between two adjacent strips of adhesive running in the direction of action.
  • the distance measured from center to center of two adjacent strips of adhesive running in the effective direction is between four times to ten times the correspondingly determined distance from adjacent warp strands. According to the invention, this is from center to center measured distance between adjacent effective direction adhesive of two strips between 7 mm and 20 mm.
  • the width of the adhesive-free cells is smaller according to the width of the adhesive strips, and in the area located within the frame, the proportion of the adhesive surface is usually between 10% and 50%, preferably between 20% and 30%.
  • the proportion of the area to be provided with adhesive it should be taken into account that, in the case of a large value, both the ability to bond with hook-and-loop fasteners decreases and the costs increase due to the increased adhesive application.
  • the glued surfaces have a significantly lower velcro, since the threads necessary for the function of the knitted fabric are completely fixed by the adhesive and are insufficient for hooking available.
  • the proportion of the surface provided with the adhesive is too low, there is a risk that the knitted fabric will tear off from the carrier or be torn due to an uneven force distribution.
  • the adhesive-free cells follow a rectangular, or square, geometry. Even if no square configuration of the adhesive-free cells is provided, the spacing between adjacent, transversely extending adhesive strips in the range of 7 mm to 20 mm also lies.
  • the distance between adjacent warp strands is significantly lower and according to the invention is between 1 mm and 3 mm, preferably between 1.2 mm and 2.2 mm.
  • connecting threads preferably extend in the direction of action in zigzag fashion over two adjacent or several warp strands.
  • the knitted fabric should also be as translucent as possible, so that a decorative print arranged underneath can be well perceived.
  • the basis weight of the knitted fabric is usually between 8 g / m 2 and 40 g / m 2, preferably less than 21 g / m 2 m, more preferably between 10 g / m 2 and 18 g / m 2 .
  • the width of the adhesive strip running in the direction of action and perpendicular thereto is typically between 0.5 mm and 5 mm, preferably between 0.5 and 1.5 mm. It should be noted that the adhesive strips should always incorporate at least one warp strand, which is why, in particular, the adhesive strips running in the effective direction have expediently a width of at least 0.4 mm.
  • the adhesive strips are preferably continuous. A different design with interrupted adhesive lines is not excluded. Also conceivable, for example, adhesive strips that are formed from a dotted line or interrupted, straight line sections.
  • a film may be provided which preferably has a basis weight between 5 g / m 2 and 50 g / m 2 .
  • Monofilms as well as multilayer coextruded or laminated films can be used. Suitable examples are films of polyethylene, polypropylene, polyester, polyamide and mixtures of copolymers based on these polymers.
  • carrier films are used which are inexpensive and whose surface can be printed in straight printing.
  • a carrier and a nonwoven fabric may be provided which according to the EP 1 997 942 A1 can be trained.
  • the carrier and the knitted fabric are adhesively bonded to one another in an edge region which extends along the edges of the composite element and has the shape of a frame, thereby avoiding tearing of the knitted fabric from the carrier in this edge region.
  • the frame usually has a width of usually between 4 mm and 10 mm.
  • the composite element has in the simplest case an approximately rectangular, elongated blank, which can be stored at different positions to adapt to a different waist circumference, the hook tape a hook and loop fastener.
  • the hook tape a hook and loop fastener.
  • other geometric shapes of the composite element can be realized by a corresponding blank.
  • the required lateral and longitudinal opening forces were determined according to ASTM method D 5170-98 (Reapproved 2004) entitled Standard Test Method for Peel Strength ("T" Method) of Hook and Loop Touch Fasteners, but with the following deviations from this standard:
  • the width of the hook element is 25.4 mm and the length is 13 mm.
  • the length of 13 mm results from the fact that a roll with a correspondingly wide hook material is used, from which the individual sections are separated.
  • the hook portions were adhered to a strip of paper having a basis weight of 90 g / m 2 having a width of 25.4 mm and a length of 210 mm.
  • the hook elements were glued to the center of the paper strip such that the width of the hook element coincides with the width of the paper strip.
  • the composite element forming the female part of the hook and loop fastener was provided with a width of 25.4 mm and a length of 100 mm.
  • an orientation was chosen in which the effective direction (W) of the textile fabric 2 is the width of the composite element equivalent.
  • the pattern was formed such that the effective direction (W) of the textile fabric (2) corresponds to the length of the composite element.
  • the Fig. 1A and Fig. 1B showed a composite element which forms the female part of a hook and loop fastener and, when used as a diaper fastener, is applied to the front portion of a diaper.
  • the composite element consists of a film as a carrier 1 and a textile knitted fabric 2 laminated on the carrier 1 as a cover layer.
  • the knitted fabric 2 is formed of polymeric threads as Kettwirkware and comprises extending in the direction of effective warp strands 3 and incorporated therein, suitable for connection with Velcro hooks loops 4, wherein parallel to each other warp strands 3 are connected by zigzag extending connecting threads 5.
  • the knitted fabric 2 is bonded to the support 1 by an adhesive pattern, the adhesive forming in a middle region of the composite element a grid pattern with straight, vertically crossing adhesive strips 6a, 6b and rectangular or square adhesive-free cells 7.
  • a first part of the adhesive strip 6a runs parallel to the warp strands 3 in the direction of action W, with the other adhesive strips 6b correspondingly perpendicular to the warp strands 3. While individual warp strands 3 are completely retained in the adhesive in the region of the adhesive strip 6a extending in the direction of action W, further warp strands 3 are provided between the adhesive strips 6a extending in the direction of action W, which are held only on the adhesive strips 6b extending in the transverse direction.
  • the knitted fabric 2 is securely fastened in the region of running in the direction of action W adhesive strip 6a, wherein to ensure a secure fit the integration of entire warp strands 3 in the glue is beneficial.
  • a closed circumferential frame 8 having a width between 4 mm and 10 mm is possible at the edge of the composite element.
  • the composite element can be formed by a corresponding adhesive application in the repeat on a larger material web and a cutting of a composite element.
  • the proportion of the surface provided with adhesive is between 20% and 30%, whereby in the adhesive-free cells 7, on the one hand, a good connection with hook-and-loop hooks and, on the other hand, a sufficient connection of the knitted fabric 2 to the carrier 1 are achieved.
  • the distance a between each adjacent adhesive strip 6a, 6b is usually between 7 mm and 15 mm, wherein the distance b between adjacent warp strands 3 with 1 mm to 3 mm is significantly lower.
  • the center-to-center distance a between adjacent adhesive strips 6a, 6b is about 10 mm and the distance b between adjacent warp strips 3 is about 1.7 mm.
  • the carrier 1 is usually provided with a decorative imprint 9, which is visible through the translucent knitted fabric 2.
  • the basis weight of the knitted fabric 2 is usually between 15 g / m 2 and 40 g / m 2 , preferably between 18 g / m 2 and 28 g / m 2 .
  • the maximum forces to be applied for opening were determined in a test arrangement for different adhesive patterns and knitted fabrics with different grammage.
  • Different regions of a carrier film 1 were provided with a square pattern according to the present invention, a pattern of intersecting wavy lines and a pattern with point-free adhesive-free areas.
  • the distance a between adjacent adhesive strips was about 8.6 mm and the proportion of the adhesive area was 23% (FIG. Fig. 2C ).
  • FIGS. 2A and 2B show the patterns used for comparison. That in the Fig. 2A illustrated pattern of intersecting undulating adhesive strip 6 'is due to the forming adhesive-free cells 7' also referred to as "dog bone” pattern. The proportion of the area provided with adhesive is about 20% of the total area in the "dog bone” pattern. The smallest distance between two adjacent wave-shaped adhesive strips db 1 is 4.6 mm in the comparison sample and the large distance db 2 measured perpendicularly thereto is 14.4 mm.
  • the Fig. 2b shows a comparative pattern with dot-free adhesive-free cells 7 ", wherein the proportion of the adhesive-provided area is about 25% of the total area.
  • the diameter d of the adhesive-free cells 7" is 11.7 mm in the comparative sample.
  • the carrier 1 was bonded by the adhesive pattern according to the invention and the two comparative samples with textile knitted fabrics, which differ by their weight of 18 g / m 2 , 21 g / m 2 and 25 g / m 2 .
  • Measurements according to Fig. 3A and Fig. 4A carried out with Velcro 962 hooks.
  • the measurements according to the Fig. 3B and Fig. 4B carried out with hooks of the type 3M CHK 01088.
  • carrier 1 was a three-layer PE film with a basis weight of 17 g / m 2 used.
  • the bonding of carrier 1 and knitted fabric 2 was carried out with a one-component polyurethane adhesive.
  • the measurement was carried out according to the method described under item 8 of ASTM D 5170-98 (Reapproved 2004), but with the proviso that only the experimental configuration 1 according to the Fig. 2 ASTM D 5170-98 (Reapproved 2004). According to this standard, the mean value of the peel force can be determined by integration.
  • the values were recorded and averaged over a large number of measurements (n 10).
  • the values for the adhesive pattern according to the invention are shown as rectangles, the values for the dot pattern as circles and the values for the "dogbones" pattern as triangles.
  • the values for the pattern according to the invention are significantly higher than the comparison values with hooks of the type Aplix 962 for the different textile knitted fabrics, in particular at basis weights ⁇ 21 g / m 2 . This applies both to the opening forces measured in the longitudinal and in the transverse direction.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Slide Fasteners, Snap Fasteners, And Hook Fasteners (AREA)
  • Knitting Of Fabric (AREA)

Claims (6)

  1. Élément en matière composite destiné à une fermeture auto-agrippante, doté d'un support (1) et d'un tricotage textile (2) contrecollé sur le support (1), lequel comporte dans la direction d'action (W) des fils de chaîne (3), ainsi que des boucles (4) enchevêtrées dans ces derniers, aptes à être reliées avec des crochets, sachant que le support (1) et le tricotage (2) ne sont pas reliés ensemble à pleine surface, un agent adhésif formant un motif en grille avec des bandes d'agent adhésif (6a, 6b) qui se croisent à la perpendiculaire et des cellules (7) exemptes d'agent adhésif, et l'un des groupes des bandes d'agent adhésif (6a) s'écoulant dans la direction d'action (W) et
    les bandes d'agent adhésif (6a, 6b) qui se croisent à la perpendiculaire s'écoulant de manière rectiligne et formant un motif en grille avec des cellules (7) rectangulaires ou carrées exemptes d'agent adhésif, les fils de chaîne (7) prévus entre deux bandes d'agent adhésif (6a) voisines, s'écoulant dans la direction d'action n'étant fixés que sur les bandes d'agent adhésif (6b) qui s'écoulent à la perpendiculaire de la direction d'action (W),
    sachant que l'écart (a) entre des bandes d'agent adhésif (6a) voisines, s'écoulant dans la direction d'action (W) est compris entre 7 mm et 20 mm, caractérisé en ce qu'entre deux bandes d'agent adhésif (6a) voisines sont prévus plusieurs fils de chaîne (3)
    et en ce que l'écart (b) entre des fils de chaîne (3) voisins est compris entre 1 mm et 3 mm.
  2. Élément en matière composite selon la revendication 1, caractérisé en ce que l'écart entre des fils de chaîne voisins est compris entre 1,2 mm et 2,2 mm.
  3. Élément en matière composite selon la revendication 1 ou 2, caractérisé en ce que dans une région centrale, le taux de la surface munie d'agent adhésif est compris entre 20 % et 30 %.
  4. Élément en matière composite selon l'une quelconque des revendications 1 à 3, caractérisé en ce que le grammage du tricotage (2) est inférieur à 21 g/m2.
  5. Élément en matière composite selon l'une quelconque des revendications 1 à 4, caractérisé en ce que le support (1) est un film.
  6. Élément en matière composite selon l'une quelconque des revendications 1 à 5, caractérisé en ce que, dans une zone marginale qui s'étend le long des bords de l'élément en matière composite et qui présente la forme d'un cadre (8), le support (1) et le tricotage (2) sont collés l'un sur l'autre à pleine surface.
EP10187056.6A 2010-10-08 2010-10-08 Elément composite pour une fermeture autogrippante Not-in-force EP2439323B1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
EP10187056.6A EP2439323B1 (fr) 2010-10-08 2010-10-08 Elément composite pour une fermeture autogrippante
MX2011010588A MX339885B (es) 2010-10-08 2011-10-07 Elemento de material compuesto para un cierre de velcro.
US13/269,070 US20120088061A1 (en) 2010-10-08 2011-10-07 Laminate material element for a hook-and-loop closure
CA2754365A CA2754365A1 (fr) 2010-10-08 2011-10-07 Element en materiau stratifie pour fermeture auto-agrippante
JP2011223884A JP5981702B2 (ja) 2010-10-08 2011-10-11 面ファスナーのための複合材要素

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP10187056.6A EP2439323B1 (fr) 2010-10-08 2010-10-08 Elément composite pour une fermeture autogrippante

Publications (2)

Publication Number Publication Date
EP2439323A1 EP2439323A1 (fr) 2012-04-11
EP2439323B1 true EP2439323B1 (fr) 2018-07-04

Family

ID=43920353

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10187056.6A Not-in-force EP2439323B1 (fr) 2010-10-08 2010-10-08 Elément composite pour une fermeture autogrippante

Country Status (5)

Country Link
US (1) US20120088061A1 (fr)
EP (1) EP2439323B1 (fr)
JP (1) JP5981702B2 (fr)
CA (1) CA2754365A1 (fr)
MX (1) MX339885B (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5986443B2 (ja) * 2012-07-13 2016-09-06 富士フイルム株式会社 放射線画像撮影装置、放射線の照射開始の検出感度の制御方法およびプログラム
TWI500399B (zh) * 2012-12-28 2015-09-21 Taiwan Paiho Ltd 抗裂痕傳播之黏扣帶
EP2883472B2 (fr) 2013-12-13 2018-12-26 Mondi Gronau GmbH Élément composite pour fermetures velcro et procédé de formation d'un élément composite de fermetures velcro
DE102014119706A1 (de) * 2014-12-30 2016-06-30 Mondi Gronau Gmbh Landing Zone mit hotmeltverklebtem Velours

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2270205T3 (es) 2004-03-22 2007-04-01 Nordenia Deutschland Gronau Gmbh Material compuesto para cierres de tipo velcro, especialmente cierres para pañales.
US20060080810A1 (en) * 2004-10-18 2006-04-20 Horn Thomas A Bonding patterns for construction of a knitted fabric landing zone
EP1690967B1 (fr) * 2005-02-12 2008-09-17 Nordenia Deutschland Gronau GmbH Matériau composite pour une fermeture auto-grippante, notamment pour la fermeture d'un article absorbant, et procédé de production dudit matériau
ES2344276T3 (es) 2007-06-01 2010-08-23 Nordenia Deutschland Gronau Gmbh Elemento de material compuesto para un cierre velcro.
EP2145555B1 (fr) * 2008-07-17 2010-08-25 Nordenia Technologies GmbH Elément composite pour une fermeture à crochet, notamment pour fermeture de couche
JP5384888B2 (ja) * 2008-09-10 2014-01-08 スリーエム イノベイティブ プロパティズ カンパニー 面ファスナ雌材
EP2441421B1 (fr) * 2010-10-08 2017-07-19 The Procter and Gamble Company Article absorbant doté d'un système de fixation à crochets et boucles

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
EP2439323A1 (fr) 2012-04-11
MX339885B (es) 2016-06-16
JP2012081273A (ja) 2012-04-26
CA2754365A1 (fr) 2012-04-08
US20120088061A1 (en) 2012-04-12
JP5981702B2 (ja) 2016-08-31
MX2011010588A (es) 2012-07-03

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