EP1749456B1 - Auto-agrippant crochet-crochet issus de moulage - Google Patents

Auto-agrippant crochet-crochet issus de moulage Download PDF

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Publication number
EP1749456B1
EP1749456B1 EP06291123A EP06291123A EP1749456B1 EP 1749456 B1 EP1749456 B1 EP 1749456B1 EP 06291123 A EP06291123 A EP 06291123A EP 06291123 A EP06291123 A EP 06291123A EP 1749456 B1 EP1749456 B1 EP 1749456B1
Authority
EP
European Patent Office
Prior art keywords
hooks
hook
row
rows
object 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.)
Not-in-force
Application number
EP06291123A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1749456A1 (fr
Inventor
Jean-Pierre Ducauchuis
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.)
Aplix SA
Original Assignee
Aplix 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 Aplix SA filed Critical Aplix SA
Publication of EP1749456A1 publication Critical patent/EP1749456A1/fr
Application granted granted Critical
Publication of EP1749456B1 publication Critical patent/EP1749456B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • A44B18/0053—Fasteners made integrally of plastics in which each part has similar elements
    • 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]
    • Y10T24/2792—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] having mounting surface and filaments constructed from common piece of material

Definitions

  • the present invention relates to an object, in particular molded, having at least one surface from which are derived from molding hooks intended to be part of a self-gripping closure, and to an assembly of at least two objects, in particular molded, of this kind, the hooks of one of the at least two objects snapping into the hooks of another of the at least two objects.
  • This molded object of the prior art has the disadvantage that the hooks which are made by molding, in particular by ejection of the hook head from a molding cavity, are made with a shape and in an arrangement such that It is not possible to obtain a hook-and-hook fastener, but only a hook-and-loop fastener with another object or part of the object. Indeed, these hooks have relatively flexible heads to allow their demolding, and a snap hooks in hooks does not "hold", especially does not withstand torsional forces, because of this relative flexibility.
  • the present invention aims to overcome the disadvantages of the prior art by making available for the first time an object, in particular molded, of any shape, having a first face which is directly molded a field of hooks, which are suitable for cooperate with another field of similar hooks from a second object, or another part of the object, for fixing or closing hook-type hook.
  • an object in particular molded, of any shape, having a first face which is directly molded a field of hooks, which are suitable for cooperate with another field of similar hooks from a second object, or another part of the object, for fixing or closing hook-type hook.
  • the object in particular molded, having at least one surface from which are derived, in particular directly from molding, at least one hook field, each hook consisting of a rod portion and a head portion projecting laterally from the rod portion, the hooks being arranged in rows, is characterized in that in at least one row the hooks comprise at least a succession of m hooks with single head of right direction, respectively left, successive, whose head projects from the rod in a first direction, and n hooks of left direction, respectively straight, successive, following m hooks, whose head projects at least in a second direction, respectively right, opposite to the first direction, m and n being integers such that 1 ⁇ m ⁇ n.
  • all the hooks are single-headed.
  • the hooks By thus providing an alternation of hooks in one direction, then in the other, with in addition an asymmetry (m and n being different from each other), it is possible to make the hooks snap together. an object with the hooks of another object, and thus to obtain a closure said hook in a hook that works well, although the hooks have only one head (that is to say one head doing protruding on one side of the stem, and in particular it is not a mushroom head or a double head) and have a shape and dimensions and are in a material that allow them to be demolded hook-shaped cavities by deforming slightly during extraction, then by then resuming their shape corresponding to that of the mold.
  • one head that is to say one head doing protruding on one side of the stem, and in particular it is not a mushroom head or a double head
  • the hooks have only one head (that is to say one head doing protruding on one side of the stem, and in particular it is not a mushroom head or a double head) and have a shape
  • said at least one row there is also provided a succession of m 'single head hooks left direction, respectively right, and n' hooks at least right direction, respectively left, m 'and not being integers such that 1 ⁇ m' ⁇ n'.
  • the hooks are arranged in rows and columns, so that in a first column all the hooks are oriented in the same first direction, then in a first even number of subsequent columns the hooks in each row are arranged in pairs, the hooks of each pair being oriented back to back in the odd rows, respectively pairs, and face to face in the even and odd rows, then in the next column all the hooks are oriented in the same second direction , then again in a second even number of subsequent columns the hooks in each row are arranged in pairs, the hooks of each pair being oriented back to back in the odd rows, respectively pairs, and face to face in the even rows, respectively odd, then again in the next column all the hooks are oriented in the first direction. and possibly so on.
  • first direction and the second direction are opposed to each other, so as to obtain a self centering when snapping a male part into the other.
  • the hooks in at least one row are arranged according to a repetition cycle consisting of m straight right head hooks, respectively left, and n left hooks, respectively straight.
  • the rows are offset relative to each other by a number of hooks between 1 and m-n-1.
  • the inter-rod distance (distance between the hook rods at the level of said at least one surface) between the two successions of n and m hooks (between the nth hook of the n hooks and the first m brackets) is smaller than any inter-rod distances between two other hooks of the row, and in particular this distance is substantially zero.
  • the distance between the two successions of m and n hooks (between the m hook of the m hooks and the first of the n hooks) is greater than any inter-rod distances between two other hooks of the row.
  • the distance between two rows is strictly less than the transverse thickness of the hooks, measured in the direction of the columns, in particular perpendicular to the rows, and preferably is less than half the transverse thickness.
  • the present invention also relates to an assembly consisting of a first object, in particular molded, according to the invention and a second object, in particular molded, according to the invention, the hook fields. of the first object meshing the hooks of the field of hooks of the second object to fix the first object to the second object.
  • hooks protrude from a surface 2 of a base plate 20.
  • the hooks are arranged in rows (direction CD), parallel to each other, and columns (MD direction), parallel to each other.
  • hooks 6, 7 and 8 follow one another in succession.
  • the hook 6 is oriented to the right, that is to say that its hook head projects laterally from its rod in the direction to the right of the rod to the figures, in the direction of the row 4.
  • the hook 7 immediately next to him a head which protrudes in the direction to the left, in the direction of the row, as well as the hook 8 immediately following in the row.
  • the hook 7 and the hook 8 'and the equivalent hooks (same reference to the figures) to these two hooks in the following rows are aligned in a column 10, in which all the hooks 7, 8', etc ... of the column are oriented in the same direction.
  • the two successive columns are separated by one or more couple (s) of hooks (1 pair to the figure 2 , 3 couples at the figure 9 ) said face to face (ie whose heads are oriented towards each other), while in the odd rows (for example the row 5), the two successive columns are separated by one or more couples (s) (1 couple at the figure 2 , 3 couples at the figure 9 ) said back to back, ie whose hook heads are oriented in opposite directions.
  • one column out of three is a column like column 10.
  • the distance (measured at the surface 2 by the distance between the rods along the row) between two hooks 7 and 8 oriented in the same direction and following in a row is substantially equal to half the distance between two hooks 6 and 7 whose heads are facing each other.
  • the distance A between two successive hooks 7, 8 'in a column is smaller than the dimension B of the head of the hooks measured in the direction of the column, preferably less than B / 2.
  • the upper plate 21 is identical to the lower plate 20, simply turned 180 °.
  • a hook 8 of a first row of the bottom plate 20 snaps through its head into the head of a hook 7 of the upper plate 21, a hook 7 of the first row 4 of the plate
  • the bottom snap-fastener engages in the head of a hook 8 of the first row of the top plate
  • a hook 6 of the first row 4 of the bottom plate abuts by its head against the shank of a hook. 8 of the top plate.
  • a hook 6 of the row 4 of the upper plate abuts by its head against the rod of a hook 8 of the lower plate.
  • a hook 8 'of the row of the bottom plate 20 abuts by its head against the rod of a hook 6' of the upper plate 21
  • a hook 7 'of the row 5 of the plate 20 bottom snap by its head in the head of a hook 8 'of the row 5 of the upper plate
  • a hook 6' of the row 5 of the lower plate abuts by its head against the stem of a hook 8 'from the top plate.
  • a hook 6 'of the row 5 of the upper plate abuts by its head against the rod of a hook 7' of the row 5 of the lower plate
  • a hook 7 'of the row 5 of the upper plate abuts by its head against the rod of a hook 6 'of the lower plate
  • a hook 8' of the row 5 of the upper plate is snapped by its head in a hook 7 'of the row 5 of the lower plate.
  • the hooks 6 of the row 4 of the lower plate snap their head into hooks 7 'of the row 25 of the upper plate.
  • the hooks 7 in row 4 of the lower plate abut by their head against the rod of a hook 7 'of the row 25 of the upper plate.
  • the hooks 8 of the row 4 of the lower plate abut by their head against the rod of a hook 8 'of the row 25 of the upper plate.
  • the hooks 6 'of the row 25 of the upper plate abut by their head against the rod of a hook 6 of the row 4 of the lower plate.
  • the hooks 8 'of the row 25 of the upper plate abut against the rod of a hook 7 of the row 4 of the lower plate and the hooks 7' of the row 25 of the upper plate snap into the hooks 6 of row 4 of the bottom plate.
  • the hooks 6 'of a row 5 of the lower plate snap their heads into hooks 8 of the row 24 of the upper plate.
  • the hooks 7 'of the row 5 of the lower plate abut by their head against the rod of a hook 8 of the row 24 of the upper plate.
  • the hooks 8 'of the row 5 of the lower plate snap their heads into the head of a hook 6 of the row 24 of the upper plate.
  • the hooks 6 of the row 24 of the upper plate snap their heads into the head of a hook 8 'of the row 5 of the lower plate.
  • the hooks 7 of the row 24 of the upper plate abut against the rod of a hook 8 'of the row 5 of the lower plate.
  • the hooks 8 of the row 24 of the upper plate are hooked by their head in the head of a hook 6 'of the row 5 of the lower plate.
  • row 4 (row front) is the innermost row.
  • Row 5 is the next row. It is offset by one hook with respect to row 4.
  • the row following row 5 is identical to row 4, then the next row is identical to row 5 and so on.
  • Row 25 is the outermost row (back row). It is identical to row 5.
  • row 24 is the row preceding row 25. It is identical to row 4.
  • the repetition cycle of the hooks thus consists of 1 left hook 7, followed by three pairs of back-to-back hooks, then a straight hook 107 and then three pairs of hooks. back to back, the cycle repeating itself with a left hook.
  • the cycle is identical except that the pairs of hooks are pairs facing each other.
  • this variation can be according to a law, for example increasing by 1 after each constant column, or random.
  • the even rows are not even rows offset from those ci of one or more hook (s).
  • part of a closure comprising two plates.
  • the clearance J between a hook head and a hook rod in the case where the head of a hook of one of the two plates abuts against the rod of a hook of the other plate.
  • This dimension E is the interval between the two axes of attachment of two hooks which mesh with one in the the other, the hooking axis of a hook being the line vertical or perpendicular to the base of the plate and passing through the lowest point of the hook head.
  • the width L2 of a column of hooks measured at the hook heads is always greater than the distance L1 between two hook heads of two successive columns.
  • the spacing of the two plates is such that the distance between two hooks which mesh with each other in the vertical direction P is always greater than zero.
  • a hook according to the invention is shown in longitudinal section.
  • an envelope curve 60 of the hook is thus defined.
  • the axis 62 (imaginary) of the hook is defined as being the straight line perpendicular to the lower face 2 and passing through the middle of the base 61 of the hook.
  • the right (imaginary) delimitation of the head of the hook is defined as the first straight line 63 parallel to the axis 62 of the hook, starting from the axis 62 and shifting to the right (respectively the left), which cuts the envelope curve 60 in two points (64 and 65).
  • the portion of the hook outside of line 63 and above point 64 is called the hook head 40.
  • the rod 50 of the hook is defined as the part of the hook which is on the other side of the segment (64, 65) of delimiting straight line 63.
  • the rod 50 is flared (its width in the plane of the figure 6 decreases) from bottom to top of the hook.
  • the hook has a rectangular shape whose length dimension (horizontal width of the rod in the plane of the figure 6 ) and / or in thickness (in the direction perpendicular to the figure 6 ) decreases from the base to the head.
  • the hook head has a rectangular shape seen from above, with a constant or decreasing thickness in cross section from bottom to top.
  • the greatest thickness in height is defined as being, measured along the axis 62 of the hook, the difference between the maximum height HM of the head (distance from the lower face 2 to the highest point 75, measured parallel to the axis 62) and the minimum height Hm of the head (the distance from the lower face 2 to the lowest point 76 of the head of the hook).
  • the hooking height Ho it is equal to the distance along the axis 62, between the lower face 4 and the highest point 77 of the section of the envelope curve defining the lower surface of the head 40. .
  • the profile of the head is greater than 0.55, especially greater than 0.60, preferably greater than 0.80, and more preferably greater than 0.9.
  • the part of the envelope curve defining the rod consists of an arc of a circle and a line 84 which extends inclined with respect to the axis 62 substantially until cutting the line of delimitation 63.
  • the angle of inclination is preferably between 20 ° and 45 °.
  • the part of the envelope defining the head consists of an upper arc (defining the upper surface of the head) and a lower arc (defining the lower surface of the head) and an arc of intermediate circle.
  • the radius of the upper arc is preferably between 0.10 and 0.5 mm, for example 0.32 mm
  • the radius of the lower arc is preferably between 0.04 and 0.25 mm for example 0.12 mm
  • the radius of the intermediate circle is preferably between 0.01 and 0.10 mm, for example 0.06 mm.
  • the portion of the envelope curve defining the head has no cusp (its first derivative function is continuous at any point).
  • the absence of a "pointed" part in the head of the hook helping to demold the hook during its manufacture.
  • the height HM is preferably between 0.25 and 2 mm, for example equal to 1.43.
  • the thickness of the plate 2 is comprised of preferably between 0.2 and 1.5 mm, for example 0.8 mm.
  • the height Hm is preferably between 0.1 and 1.05 mm, for example 0.91 mm.
  • the height Ho is preferably between 0.15 mm and 1.25 mm, for example 1.12 mm.
  • the width at the plate 2 of the rod is preferably between 0.2 mm and 1.5 mm, for example 0.8 mm.
  • the width of the rod at the height of the intersection of the envelope curve with the right delimiting right is preferably between 0.11 and 0.7mm, for example 0.45mm.
  • the height thickness HM-Ho is preferably between 0.10 and 0.50 mm, more preferably between 0.20 and 0.40 mm, for example 0.32 mm.
  • the thickness in height of the base is preferably between 0.1 mm and 4 mm, more preferably between 1 and 2 mm.
  • the ratio of the height thickness HM-Ho to the height of the base is less than 1, preferably less than 0.5, more preferably less than 0.3, especially less than 0.2.
  • Suitable thermoplastic materials in particular the hooks are derived from molding a very rigid object, may be provided polypropylenes or polyurethanes.
  • polypropylene an unsaturated polyester blend of 50% homopolymer and 50% copolymer, having a melt flow index of 22g / 10mn and a flexural modulus of 130,000 to 30,000, can be selected. 150,000 psi (8.96 ⁇ 10 9 Pa at 10.34 ⁇ 10 9 Pa).
  • Other possible materials include a polypropylene from Atofina, PPC 5660, having a melt flow index of 7 and a flexural modulus of 175,000 psi (12.06 x 10 9 Pa), propylene copolymers from BP Amoco (Acclear 8949 and Acctuf impact copolymer 3934X) having index values melt flow rate of 35 to 100, and flexural moduli of 190,000 to 250,000 psi (13.10 x 10 9 Pa at 17.23 x 10 9 Pa); polystyrenes, acrylonitrile butadiene styrenes, high density polyethylene, linear low density polyethylene, polycarbonate.
  • the indexes in the molten state are between 1 and 100, and the flexural moduli between 30,000 and 1,140,000, preferably between 100,000 and 1,000,000, more preferably between 300,000 and 1,000,000.
  • resins than suitable propylene-based resins may be impact polystyrene, acrylonitrile-butadiene stryrene, nylon, high density polyethylene, linear low density polyethylene, polycarbonate, and olefinic thermoplastic resins. Provision may also be of polypropylene reinforced by long glass fibers having a very high flexural modulus (30YM240 resin / 10010 having a flexural modulus of 856,000 psi (59,02.10 9 Pa) and resin 40YM240 / 10010 having a modulus of bending 1,140,000 psi (78,60.10 9 Pa), sold by the company STAMAX). In this case the long glass fibers do not migrate into the cavities (which are too small or too thin for the long fibers to penetrate) and a rigid plate is obtained and yet sufficiently flexible hooks to eject cavities.
  • Rigid means an object that can not be reversibly curved beyond a curvature angle of 5 °.
  • the object can be for example, as shown in figure 1 , a flexible plastic box intended for example to preserve food, having a lower part 100 and an upper part or cover 200.
  • a tongue 300 projects from the lower part 100 and comprises a field of hooks according to the invention, as represented for example at the figure 2 .
  • the rim 400 of the cover comprises a field of hooks according to the invention, which snap into the hooks of the tongue 300 allow the closure of the box.
  • the object in particular molded, for example the box, may be a plastic or thermoplastic material, rigid or flexible.
  • it may be a ribbon on one side of which are derived hooks formed by molding in a cavity roller as described in the patent application. European Court N ° 1042971 in the name of the plaintiff.
  • the hooked flexible tape is reported on the object or objects that it is desired to provide a hook-and-hook closure as in accordance with the invention.
  • the closure may also consist of two flexible ribbons on one side of which are derived, for each, hooks formed by molding in a cavity roller, or by extrusion according to the method described in for example the US patent US Patent 4056593 .

Landscapes

  • Slide Fasteners, Snap Fasteners, And Hook Fasteners (AREA)
  • Braking Arrangements (AREA)
  • Dental Prosthetics (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
  • Supports For Plants (AREA)
  • Stringed Musical Instruments (AREA)
EP06291123A 2005-07-29 2006-07-07 Auto-agrippant crochet-crochet issus de moulage Not-in-force EP1749456B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0508144A FR2889037B1 (fr) 2005-07-29 2005-07-29 Auto-agrippant crochet-crochet issus de moulage

Publications (2)

Publication Number Publication Date
EP1749456A1 EP1749456A1 (fr) 2007-02-07
EP1749456B1 true EP1749456B1 (fr) 2008-02-27

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Application Number Title Priority Date Filing Date
EP06291123A Not-in-force EP1749456B1 (fr) 2005-07-29 2006-07-07 Auto-agrippant crochet-crochet issus de moulage

Country Status (9)

Country Link
US (1) US7841052B2 (ja)
EP (1) EP1749456B1 (ja)
JP (1) JP2007038002A (ja)
CN (1) CN1903096B (ja)
AT (1) ATE387116T1 (ja)
CA (1) CA2551513A1 (ja)
DE (1) DE602006000586T2 (ja)
ES (1) ES2302308T3 (ja)
FR (1) FR2889037B1 (ja)

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Publication number Priority date Publication date Assignee Title
US8448305B2 (en) 2007-07-03 2013-05-28 Valero Industries B.V. Arrays of fastener elements

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CN1903096B (zh) 2010-10-06
JP2007038002A (ja) 2007-02-15
CN1903096A (zh) 2007-01-31
CA2551513A1 (fr) 2007-01-29
ATE387116T1 (de) 2008-03-15
EP1749456A1 (fr) 2007-02-07
ES2302308T3 (es) 2008-07-01
US20070022580A1 (en) 2007-02-01
FR2889037B1 (fr) 2007-09-14
DE602006000586D1 (de) 2008-04-10
DE602006000586T2 (de) 2009-03-26
US7841052B2 (en) 2010-11-30
FR2889037A1 (fr) 2007-02-02

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