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
  • A44B18/0069—Details
• • 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
  • Y10T24/00—Buckles, buttons, clasps, etc.
  • Y10T24/27—Buckles, buttons, clasps, etc. including readily dissociable fastener having numerous, protruding, unitary filaments randomly interlocking with, and simultaneously moving towards, mating structure [e.g., hook-loop type fastener]
  • Y10T24/2725—Buckles, buttons, clasps, etc. including readily dissociable fastener having numerous, protruding, unitary filaments randomly interlocking with, and simultaneously moving towards, mating structure [e.g., hook-loop type fastener] with feature facilitating, enhancing, or causing attachment of filament mounting surface to support therefor

Definitions

• the present invention relates to a method for the production of touch and close fastener strips in which not all of the surface is covered by hooks or loops, a device for implementing this method and touch and close fasteners with improved properties.
• a touch and close fastener generally consists of two parts that can attach to one another, whereby one part is a male part that has small hooks protruding out of the support on at least one side, while the other part is a female part that has loops on at least one side.
• Both parts primarily consist of a support and hooks or loops, for example formed by a matrix of warp threads and weft threads, between which pile threads are woven to form the pile protruding out of the support that forms the aforementioned hooks or loops.
• a touch and close fastener strip often has edges, called sewing edges, on which there are no hooks or loops. This sewing edge can be used to sew the strip onto textiles.
• Such a touch and close fastener strip is produced with sewing edges by setting up a loom such that the desired width of the strip, and also the desired width of the part that has the pile, is obtained.
• Touch and close fasteners can also be made with different fastening strengths by varying the quantity of pile thread that is woven in, and also by selecting the right settings for the loom. This traditional way of making touch and close fasteners with different widths and fastening strengths has a number of disadvantages.
• a first disadvantage relates to the fact that in practice a large quantity of different qualities and widths have to be produced, for which the loom has to be adapted each time, which is a long and expensive operation.
• a further disadvantage is that there is no flexibility for adapting the touch and close fastener strip once it has been produced.
• a method is known from US 4662037 for providing a touch and close fastener strip with a sewing edge by ultrasonically melting the hooks and loops over a part of the touch and close fastener, i.e. the part that will form the sewing edge.
• a sewing edge is thereby visually formed, but it partly consists of a hard solidified layer of what was previously the hooks or loops.
• An ultrasonic melting device is also relatively expensive, both with regard to procurement and usage, due to a relatively short lifetime. Extensive readjustment of the ultrasonic device is also needed when a different type or different quality of touch and close fastener has to be provided with sewing edges in this way, such that there are significant adjustment costs when production changes.
• a further disadvantage is that such a method is only feasible with a limited quantity of manufacturing materials for touch and close fastener. Indeed, for the feasibility of the method it is first necessary for the material for the hooks and loops to be meltable. As a result materials that do not melt, but which harden or char, cannot be used at all. Metal threads, that melt at a very high temperature, cannot be used either.
• the purpose of the present invention is to provide a solution to at least one or more of the aforementioned disadvantages and/or other disadvantages.
• the invention concerns a method for the production of at least one strip of a male or female touch and close fastener respectively, consisting of at least a support with hooks or loops respectively on at least one side of it, in which a part of the strip does not have hooks or loops, in which the hooks or loops are selectively mechanically removed from a part of the touch and close fastener strip.
• touch and close fasteners such as touch and close fasteners with logos or geometric decorations, touch and close fasteners of different widths and sewing edge widths, touch and close fasteners with reduced fastening strength, can be made from a wide touch and close fastener strip according to need and flexibly by selectively mechanically removing the hooks or loops.
• a number of narrower touch and close fastener strips with sewing edges can also be made in an advantageous way from an initial wide touch and close fastener strip, produced on one loom for example.
• a further advantage is that it brings about a capacity increase in a production department.
• An advantage is also that the separation between the sewing edges and the fastening part of the strip can be applied more accurately than with the traditional method, whereby a more beautiful visual effect is obtained, certainly after the touch and close fastener has been used a few times.
• a laminated touch and close fastener i.e. a touch and close fastener with a self-adhesive or reactivatable adhesive backing, a textile backing, a flame- retardant layer or another backing
• a perfectly fitting lamination layer is possible thanks to the method according to the invention, such that there is a lamination layer over the entire surface of the touch and close fastener strip, and does not protrude outside the touch and close fastener strip.
• the lamination layer there are also no limitations on the choice of material for the lamination layer, as is the case with the known method.
• a further advantage is that the fastening strength of the touch and close fastener can be easily adjusted by removing the hooks or loops over a part of the surface of the touch and close fastener, such that the flexibility for making different qualities is increased.
• the invention also concerns male or female touch and close fasteners consisting of at least a support and hooks or loops respectively, a part of which does not have hooks or loops, in which the support of that part has residues of the material that make up the hooks or loops, from which the hooks or loops have been mechanically removed.
• the invention also concerns a device for producing at least one touch and close fastener strip, with at least a support and hooks or loops, in which at least one part extending in the longitudinal direction does not have hooks or loops, that has means of mechanical removal in order to remove hooks or loops from a touch and close fastener strip, and transport facilities to move the means and the touch and close fastener with respect to one another in the longitudinal direction of the touch and close fastener.
• figure 1 schematically shows in perspective a touch and close fastener according to the invention with a male part with hooks and a female part with loops;
• figure 2 shows a cross-section of a male touch and close fastener strip
• figure 3 schematically shows, in the direction of arrow F3 in figure 2, the method for producing narrow touch and close fastener strips with a sewing edge from a wide touch and close fastener strip;
• figures 4 and 5 show cross-sections through the touch and close fastener in various phases of its processing, as indicated in figure 3 by lines and V-V.
• a touch and close fastener 1 shown in figure 1 is formed by two touch and close fastener strips, respectively a male touch and close fastener strip 2 and a female touch and close fastener strip 3, that are brought together to latch onto one another.
• the touch and close fastener strips 2,3 are primarily formed from a support 4, in this example consisting of a matrix of warp threads 5 and weft threads 6 woven together, between which pile threads 7 are woven to form a pile in the form of hooks 8 for the male touch and close fastener 2 or in the form of loops 9 for the female touch and close fastener 3.
• a support 4 in this example consisting of a matrix of warp threads 5 and weft threads 6 woven together, between which pile threads 7 are woven to form a pile in the form of hooks 8 for the male touch and close fastener 2 or in the form of loops 9 for the female touch and close fastener 3.
• the hooks 8 and loops 9 are on one side of the support 4 and protrude with respect to this side, although it is not ruled out that both sides of the support 4 have such hooks 8 or loops 9.
• the touch and close fastener strips 2,3 have sewing edges 10 where there are no hooks 8 or loops 9. In the traditional way these sewing edges 10 are formed by not weaving in any pile thread 7 in these places and they have a width A.
• figures 2 to 5 only a male touch and close fastener 2 is shown, and only the processing on a male touch and close fastener 2 is discussed, but the argument and drawings are analogously applicable to female touch and close fastener 3.
• a method according to the invention uses a touch and close fastener strip 2 as an initial material, as shown in figure 2.
• This touch and close fastener strip 2 is directed through a device 11 according to the invention in the direction of arrow P that consists of a rotating disk 13 with a shaving effect and a thickness B, corresponding to twice the desired sewing edge width A, which is mounted on a shaft 12, whereby the touch and close fastener 2 is directed against the disk 13 in such a way that the hooks 8 are removed together with a large part of their accompanying pile 7 by the action of the disk 13, while the support 4 does not contact the disk 13 in such a way that the support is not damaged.
• the track 14 is split in the longitudinal direction, in this case by a rotating cutting blade 20 on a shaft 19.
• a rotating cutting blade 20 on a shaft 19.
• two touch and close fastener strips 16, 17 are produced, both with a sewing edge 18, as shown in figure 5.
• the touch and close fastener 2,3 to which the method is applied can have a backing, for example a self- adhesive or reactivatable adhesive backing, a textile backing, a flame retardant layer or another layer whereby the touch and close fastener strips 16, 17 and the backing produced perfectly fit one another, and without the method having negative effects on the backing.
• a backing for example a self- adhesive or reactivatable adhesive backing, a textile backing, a flame retardant layer or another layer whereby the touch and close fastener strips 16, 17 and the backing produced perfectly fit one another, and without the method having negative effects on the backing.
• the method according to the invention can also be applied with a number of disks 13 to remove hooks 8 or loops 9 next to one another so that three or more touch and close fastener strips 16, 17 are formed.
• the method according to the invention can also be implemented in a way such that not all, or even none, of the tracks 14 formed are split. This can be useful when applying the sewing edges 18 to the touch and close fastener 2,3 that has the desired width but does not have sewing edges, or for removing part of the hooks 8 or loops 9 from a touch and close fastener strip 2,3 in order to obtain a touch and close fastener strip 2,3 with the appropriate fastening strength.
• various other mechanical methods can be used to remove the hooks 8 and the pile thread 7 or part of it.
• the method for splitting the track 14 can also be done in in many ways, such as cold cutting, hot cutting, melting or burning, for example by using a cold or hot knife, ultrasonic or laser technology.
• the invention is applicable to traditional hook-and-loop type touch and close fasteners, but also to other types of touch and close fasteners, such as mushroom touch and close fasteners, velours touch and close fasteners and extruded touch and close fasteners.
• the present invention is by no means limited to the embodiments described as an example and shown in the drawings, but a method, touch and close fasteners and a device according to the invention can be realised in all kinds of variants, forms and dimensions, without departing from the scope of the invention.

Landscapes

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

Applications Claiming Priority (2)

Publications (1)

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Family Applications (1)

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• 2010
  • 2010-09-08 BE BE2010/0535A patent/BE1019478A3/nl not_active IP Right Cessation
• 2011
  • 2011-07-22 WO PCT/BE2011/000050 patent/WO2012031339A1/en not_active Ceased
  • 2011-07-22 US US13/821,307 patent/US20130160250A1/en not_active Abandoned
  • 2011-07-22 CA CA2809703A patent/CA2809703A1/en not_active Abandoned
  • 2011-07-22 JP JP2013527425A patent/JP2013537049A/ja active Pending
  • 2011-07-22 MX MX2013002678A patent/MX2013002678A/es not_active Application Discontinuation
  • 2011-07-22 EP EP11766878.0A patent/EP2613659A1/en not_active Withdrawn

Non-Patent Citations (1)

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