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WO1994028751A1 - Attache a crochets et a boucles - Google Patents

Attache a crochets et a boucles Download PDF

Info

Publication number
WO1994028751A1
WO1994028751A1 PCT/SE1994/000546 SE9400546W WO9428751A1 WO 1994028751 A1 WO1994028751 A1 WO 1994028751A1 SE 9400546 W SE9400546 W SE 9400546W WO 9428751 A1 WO9428751 A1 WO 9428751A1
Authority
WO
WIPO (PCT)
Prior art keywords
hook
loop connection
woven material
neck
connection according
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.)
Ceased
Application number
PCT/SE1994/000546
Other languages
English (en)
Inventor
Björn Larsson
Hannele Nurmi
Per Berntsson
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.)
Essity Hygiene and Health AB
Original Assignee
Molnlycke Vafveri AB
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 Molnlycke Vafveri AB filed Critical Molnlycke Vafveri AB
Priority to AU70119/94A priority Critical patent/AU7011994A/en
Publication of WO1994028751A1 publication Critical patent/WO1994028751A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • 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
    • A44B18/0046—Fasteners made integrally of plastics
    • A44B18/0061—Male or hook elements
    • A44B18/0065—Male or hook elements of a mushroom type

Definitions

  • the present invention relates to a hook and loop connection which can be used generally but which is especially intended for different kinds of absorbent products such as nappies and sanitary towels, but which can also be used for surgery coats, surgery sheets and other medical applications.
  • Hook and loop connections are commonly known. They consist traditionally of a hook-containing part and a loop- containing part. Both are produced by different weaving or knitting processes, which are complicated and expensive. They have therefore only been used to a very small extent in disposable products.
  • the hooks which usually have the shape of hitches or mushrooms must be adapted to the loops to give an effective connection.
  • Non-woven materials are usually thin plain materials consisting of a dense fibre net.
  • Traditional hook and loop materials as well as extruded films with hooks have a shape or size which does not allow any effective penetration in a non-woven material according to the above.
  • Attempts have been made to modify non-woven material mechanically or to produce non-woven material having a more open structure, so called stitch- bonded, water jet bound or air jet bound non-woven to make the hooks penetrate the non-woven material better. These materials however lack sufficient inner strength to give an effective connection.
  • a hook and loop connection comprising a layer with projecting attachment threads or protrusions on one surface and a surface which allows adherence through anchoring of the projecting threads or protrusions, which is characterized in that the layer consists of plastics or the like with the attachment protrusions in the shape of a neck having an outwardly widening cone-shaped hat, the anchoring surface being of non-woven material.
  • the conical side of the cone shaped hat has a slope relative to the base surface of approximately 0-90°, preferably 25-50°. According to the invention it is further suitable that the total height of the protrusion with respect to the base of the neck is 0,8-1,7 and that the neck narrows outwardly.
  • the non-woven material can suitably consist of a thermo-bonded filamentary fibre sheet (spun-bonded fabric) , a carded spun-bonded fabric or an elastic non-woven material having an inner tensile strength (MD) of 15-40 N/50 mm, preferably 20-30 N/50 mm and an inner tensile strength (CD) of 5-25 N/50 mm, preferably 10- 20 N/50 mm both having a surface weight of 23 g/m 2 .
  • MD inner tensile strength
  • CD inner tensile strength
  • the inner strength is proportionally calculated with respect to 23 g/m 2 .
  • the average equivalent diameter of the circle (ECB) in the pores of the non-woven material should suitably be 0,10- 2,0 mm.
  • Fig. 1 in section shows a protrusion according to the invention
  • Fig. 2 shows the pore formation and pore measurement in the non-woven material.
  • Fig. 1 shows, in section, a typical protrusion on a hook layer according to the invention.
  • This protrusion is made of plastics as is also the support 1 from which the protrusion extends outwardly.
  • the layer 1 together with the protrusions can be moulded according to known methods.
  • the material in the protrusion and the layer 1 suitably consists of thermoplastics but also other materials are imaginable.
  • Plastics which may be used are for example polyethylene, polypropene, polya ide, aliphatic polyesters or copolymers of these materials, also together with other materials.
  • the protrusion consists of a neck 2 which narrows somewhat as it extends outwardly.
  • a hat 3 is formed on this neck 2 .
  • This hat 3 has the shape of a cone which widens as it extends outwardly.
  • the hat is suitably bowl shaped as is shown by the reference 4.
  • the advantage therewith is that the edge of the cone becomes somewhat resilient and can more easily penetrate into the pores in the opposite material.
  • the slope of the cone compared to the base surface, the angle ⁇ is not critical, it being able to vary from substantially 0 to substantially 90° but it is preferably in the order of size 25-50°.
  • the total height H of the protrusion can be of importance. If the neck 2 is too long, the protrusion can be bent, if it is pulled sidewardly when it is inserted in the opposite material. It should therefore not be too long, nor too short as problems can then arise when it is inserted into the opposing pores.
  • a suitable relation between the section C of the base of the neck and the total height H of the protrusion is in the region of 0,8-1,7.
  • the height H is 0,3-0,4 mm and the base dimension C, 0,2-0,4 mm. Other dimensions can also exist.
  • Fig. 1 the protrusion has been drawn with an ideal shape whereby the neck 2 and the hat 3 are round. Large deviations from this shape can however exist and also from the conical shape of the hat.
  • an attachment surface such as a non-woven material can be used.
  • non-woven can not be used as an attachment surface. This is due mainly to the fact that the heads of the hooks or protrusions of the known materials are too large to penetrate into the small pores of the non- woven material.
  • the protrusion according to the present invention the pores of a non-woven material can be entered and the attachment will be very good.
  • the non-woven material which can be used in accordance with the invention is for example a spun-bonded fabric, a carded thermo-bonded non-woven or an elastic non-woven material, for example of spun-bond/melt-blown/spun-bond-type, although other types can be used.
  • These materials should have an inner tensile strength (in the direction of the machine) of 50-41 N/50 mm and preferably 20-30 N/50 mm. This tensile strength is measured according to the EDANA- standard of February 20, 1989.
  • the perhaps most important property of the material of the attachment surface is the inner pore diameter. This should on average be 0,10-2,0 mm.
  • Fig. 2 shows how this diameter is measured.
  • the pore in the present case is formed by a distance between three fibres 5.
  • the pore diameter 6 is the diameter which according to standard methods is measured in a circle which falls within this network of fibres 5.
  • the measuring equipment that measures this kind of diameter is standardized and can be a Quantimet 900 Series Image Analysis from Cambridge Instrument Ltd of B Barhill, Cambridge, CB 38 EL United Kingdom.
  • the pores in the material will of course be of very different size and one has therefore standardized the expression of the pores and introduced the expression equivalent circle diameter (ECD) .
  • ECD equivalent circle diameter

Landscapes

  • Slide Fasteners, Snap Fasteners, And Hook Fasteners (AREA)
  • Nonwoven Fabrics (AREA)

Abstract

L'invention concerne une attache à crochets et à boucles qui se caractérise par le fait que la couche à crochets est en matière plastique ou équivalent et présente des protubérances en forme de colonne (2) à chapeau conique (3) s'élargissant vers l'extérieur, ainsi qu'une surface de fixation en non-tissé.
PCT/SE1994/000546 1993-06-14 1994-06-07 Attache a crochets et a boucles Ceased WO1994028751A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU70119/94A AU7011994A (en) 1993-06-14 1994-06-07 Hook and loop connection

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE9302041-0 1993-06-14
SE9302041A SE501513C2 (sv) 1993-06-14 1993-06-14 Kardborreförband

Publications (1)

Publication Number Publication Date
WO1994028751A1 true WO1994028751A1 (fr) 1994-12-22

Family

ID=20390271

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE1994/000546 Ceased WO1994028751A1 (fr) 1993-06-14 1994-06-07 Attache a crochets et a boucles

Country Status (6)

Country Link
AU (1) AU7011994A (fr)
GB (1) GB2279106A (fr)
SE (1) SE501513C2 (fr)
TN (1) TNSN94067A1 (fr)
WO (1) WO1994028751A1 (fr)
ZA (1) ZA943997B (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5614281A (en) * 1995-11-29 1997-03-25 Kimberly-Clark Corporation Creped nonwoven laminate loop fastening material for mechanical fastening systems

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5858515A (en) * 1995-12-29 1999-01-12 Kimberly-Clark Worldwide, Inc. Pattern-unbonded nonwoven web and process for making the same
US5953797A (en) 1996-10-09 1999-09-21 Velcro Industries B.V. Hook fasteners and methods of manufacture
US5931823A (en) 1997-03-31 1999-08-03 Kimberly-Clark Worldwide, Inc. High permeability liner with improved intake and distribution
US6248276B1 (en) 1999-01-15 2001-06-19 Velcro Industries B.V. Fasteners and methods of making fasteners
US7052638B2 (en) 1999-01-15 2006-05-30 Velcro Industries B.V. Hook and loop fastener
US6991843B2 (en) 1999-01-15 2006-01-31 Velcro Industries B.V. Fasteners engageable with loops of nonwoven fabrics and with other open structures, and methods and machines for making fasteners
US6162040A (en) * 1999-02-01 2000-12-19 Velcro Industries B.V. Molds for forming touch fasteners
EP1395136B1 (fr) * 2001-06-04 2007-01-24 Velcro Industries B.V. Procede pour fabriquer des fixations
USRE42475E1 (en) * 2001-06-04 2011-06-21 Velcro Industries B.V. Fasteners engageable with loops of nonwoven fabrics and with other open structures, and methods and machines for making fasteners
US6687962B2 (en) 2002-01-16 2004-02-10 Velcro Industries B.V. Fastener element patterning
US7275290B2 (en) 2003-06-04 2007-10-02 Velcro Industries B.V. Touch fasteners
ATE489015T1 (de) 2005-03-11 2010-12-15 3M Innovative Properties Co Verfahren zur herstellung von verschlüssen
HUP0500291A2 (en) * 2005-03-11 2006-11-28 3M Innovative Properties Co Fasteners, methods for making fasteners and use of fasteners in products
DE102006024014A1 (de) * 2006-05-23 2007-11-29 Gottlieb Binder Gmbh & Co. Kg Haftverschlußteil
DE102010044660A1 (de) 2010-09-08 2012-03-08 Gottlieb Binder Gmbh & Co. Kg Haftverschlussteil
EP2679112A1 (fr) 2012-06-26 2014-01-01 3M Innovative Properties Company Procédé de fabrication de fixations et toiles de précurseurs, élément de fixation et toile de précurseur
US10349707B2 (en) 2016-07-05 2019-07-16 Alfatex Nv Fastener tape
US11160334B2 (en) 2017-08-18 2021-11-02 Velcro Ip Holdings Llc Fastener element shape

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1140576A (en) * 1966-04-20 1969-01-22 Selestus Ltd Improvements in or relating to fastening means
GB1345965A (en) * 1972-03-21 1974-02-06 Standard Co Ltd Ag Non-woven fabrics

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1475073B2 (de) * 1963-10-07 1970-11-05 Minnesota Mining & Manufact. Co., Saint Paul, Minn. (V.St.A.) Plattenverbindung
FR1602145A (fr) * 1968-12-05 1970-10-12

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1140576A (en) * 1966-04-20 1969-01-22 Selestus Ltd Improvements in or relating to fastening means
GB1345965A (en) * 1972-03-21 1974-02-06 Standard Co Ltd Ag Non-woven fabrics

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5614281A (en) * 1995-11-29 1997-03-25 Kimberly-Clark Corporation Creped nonwoven laminate loop fastening material for mechanical fastening systems

Also Published As

Publication number Publication date
SE9302041D0 (sv) 1993-06-14
AU7011994A (en) 1995-01-03
SE501513C2 (sv) 1995-03-06
SE9302041L (sv) 1994-12-15
TNSN94067A1 (fr) 1995-04-25
ZA943997B (en) 1995-02-06
GB2279106A (en) 1994-12-21
GB9411731D0 (en) 1994-08-03

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