EP1729607B1 - Procede pour realiser des elements adhesifs sur un materiau de support - Google Patents

Procede pour realiser des elements adhesifs sur un materiau de support Download PDF

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Publication number
EP1729607B1
EP1729607B1 EP04722156.9A EP04722156A EP1729607B1 EP 1729607 B1 EP1729607 B1 EP 1729607B1 EP 04722156 A EP04722156 A EP 04722156A EP 1729607 B1 EP1729607 B1 EP 1729607B1
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European Patent Office
Prior art keywords
process according
adhesion
adhesive
approximately
elements
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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.)
Expired - Lifetime
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EP04722156.9A
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German (de)
English (en)
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EP1729607A1 (fr
Inventor
Jan Tuma
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Gottlieb Binder GmbH and Co KG
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Gottlieb Binder GmbH and Co KG
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Priority to PL04722156T priority Critical patent/PL1729607T3/pl
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    • 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
    • A44B18/0049—Fasteners made integrally of plastics obtained by moulding processes
    • 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 invention relates to a method for producing adhesive elements on a carrier material by using at least one plastic material which is introduced into at least one shaping element, wherein as plastic materials inorganic and organic elastomers, in particular polyvinylsiloxane, addition-crosslinking silicone elastomers, also in the form of two-component -Systems, as well as acrylates are used.
  • plastic materials inorganic and organic elastomers, in particular polyvinylsiloxane, addition-crosslinking silicone elastomers, also in the form of two-component -Systems, as well as acrylates are used.
  • WO 94/23610 A1 For example, there is known a method of making a fastener part in which a backing is made having a plurality of stems preferably integrally connected thereto.
  • a type of adhesive closure part produced in particular the formation of an adhesive closure for baby diapers or for hospital clothing is disclosed.
  • fastener fasteners that can be used in the adhesive closures of such garments, a relatively high number of entangling means per square centimeter is required, resulting in correspondingly high production costs, since the prior art molding roll used to form the entangling means has the appropriate number of entangling means must have open cavities, which are only consuming inculcate.
  • the adhesive fastener parts thus produced have on a foil-like support material integrally arranged and projecting in the vertical direction stems, which are provided at its free end with a head-side widening, the Making the releasable adhesive closure cooperate with a corresponding loop or loop material which mechanically entangles with the underside of the head-like widening of the stem material.
  • These locking systems are also often advertised in German-speaking countries with the brand name Kletten ® -Haftver anyway.
  • Patent 6,432,347 described a fibrillation of sheet material by using a vortex nozzle or with a pulsed water jet at high pressure, so as to arrive at an improved filter material or a sheet-like material with improved thermal and acoustic acoustic insulation properties.
  • Van der Waals forces are, according to Van der Waals, named intermolecular forces, which appear as weak binding forces between inert atoms and saturated molecules. While only the so-called dispersion forces are used in the interaction between atoms, the interactions of induced or possibly existing permanent dipole moments (orientation effect) are effective as additional attractive forces in molecules.
  • Van der Waals forces are considered to be synonymous with intermolecular forces, but the majority of van der Waals forces are understood to be those very wide-ranging forces of attraction between neutral molecules whose energy decreases with the 6th power of the molar distance .
  • the forces are, for example, effective in host-guest relationships, in molecular lattice crystals, inclusion compounds, molecular compounds and in phenomena of colloid chemistry, interfacial and surface chemistry, etc. (see R ⁇ MPPS CHEMIE LEXIKON, 8th ed., Franckh'sche Verlags Stuttgart).
  • a strip-like carrier part which is obtained from a die-rolling operation by means of a sieve, a calendering process or without forming tools via a droplet application process, and then the stalk ends are chemically, mechanically or electrically divided into individual filaments or single fibers.
  • the thus obtained fastener part or adhesive element finds its equivalent in nature, for example, in the feet of a gecko, which is able to move due to the foot design below a ceiling or along vertically extending glass surfaces.
  • the said stems which are present in a billion-fold arrangement in a gecko foot, are referred to in the jargon with "Seta" and the adjoining the free end of the stem individual filaments or single filaments as a "spatula".
  • the WO 03/099951 A2 shows microstructured surfaces with increased adhesion.
  • a method is used for producing adhesive elements on a carrier material by using at least one plastic material which is treated with an electrostatic flocking process, wherein the plastic materials used are organic elastomers, in particular polyvinylsiloxane.
  • the present invention seeks to further improve the known manufacturing process for producing adhesive elements, which adhere to the basis of van der Waals forces, that they can be produced inexpensively on a large industrial scale and yet to a great extent develop an adhesive effect.
  • This object is achieved by a method having the features of claim 1 in its entirety.
  • a drum-shaped or band-shaped sieve is used as the respective shaping element, the sieve having more than 10,000, but preferably with 16,000 mold cavities per cm 2 is provided. Very good arrest results have been found, provided that about 16,000 adhesive elements per cm 2 of carrier material are present, the individual adhesive elements then have only one size, in particular height of about 100 ⁇ m and smaller with a diameter of the widening head end of about 60 ⁇ m or smaller.
  • the pertinent adhesion or adhesive part can be produced very inexpensively on a large industrial scale and connect with the reason with each surface (substrate) releasably connected, for example, a provided with the adhesive elements body part with a vehicle frame or such a picture or a screen to the Hang wall without further connection means by the adhesive elements interact with their widened ends directly to the surface on the above Van der Waals forces.
  • the adhesive element part produced by the process according to the invention finds its way into the clothing industry, no further modifications are necessary here, in particular no loop or fleece material is to be arranged on parts of the clothing in order to ensure entanglement with the otherwise conventional adhesive closure parts (mushroom or hook) , Rather, here directly the closure member interact with the adhesive elements on the free widened ends with the material of the clothing fabric for making a connection. It has been found that in order to release the adhesive elements from a surface, they are preferably peeled off the surface, preferably at an angle of 90 °, so as to release the adhesion via the van der Waals forces and the closure from the surface to be able to remove any nature again.
  • the pertinent attaching and detaching operations can take place several times, preferably several thousand times, depending on the design of the closure system.
  • the length of the adhesive elements is selected such that they open for each stem on their free ends in a common plane, since the van der Waals forces act only over a very short distance, so preferably provide is that the distance of the free contact ends of the widened ends of the single stem to the intended surface substantially constant.
  • the adhesive elements can bend away from the surface to be contacted, they have a sufficient inherent rigidity;
  • the widened ends have a corresponding diameter reduction are connected in the transition region to the stem in such a way. In this way, at the transition point creates a kind of joint, so that the band-like support member with the stems is already peeled off and then adhering surface end of the Abwellamba follows in the sense of a rolling movement on the respective joint.
  • the starting material shown in Figure 3 of adhesive elements in the context of this invention can be, for example, by a method as in DE 100 39 937 A1 described, received.
  • Fig.1 shows a schematic representation of parts of a device for carrying out the method according to the invention with a nozzle head 1 as a feeding device for plastic or liquid and thixotropic plastic, which is supplied as a band whose width corresponds to that of the adhesive element to be produced, the gap between a pressure tool and a mold , As shown by the Fig.1 serves as a pressure tool, a pressure roller 3 and the mold is a designated as a whole with 5 forming roller.
  • Both rollers are in Fig.1 Driven by arrows 7 and 9 indicated directions of rotation, so that between them a conveying gap is formed, through which the plastic strip is conveyed in the transport direction, while the plastic strip is formed in the gap as a shaping zone to the carrier 10 as a carrier material of the fastener elements and the carrier 10 at the the shaping roller 5 adjacent side by the shaping elements of the forming roller 5 is replaced by the necessary to form the adhesive elements shaping.
  • a pertinent mold cavity 12 as a shaping element is exemplified in the Fig.2 shown enlarged.
  • the inflow direction of the plastic material takes place in the direction of the Fig.2 seen in the region of the pressure roller 3 from top to bottom.
  • the mold cavities 12, which is not shown in detail regularly distributed over the forming roller 5 with its sieve 11 on the outer peripheral side, wherein the distribution and the number are selectable; Preferably, however, more than 10,000 of these mold cavities 12 per cm 2 are arranged on the wire and particularly favorable for the design of the adhesive elements has a number of 16,000 mold cavities 12 per cm 2 proved.
  • the Fig.2 gives a longitudinal section again of each used Mold cavity 12, wherein the longitudinal boundary opposite boundary walls 13 are provided with a continuous convex path 14 throughout. It is understood that the said two boundary walls 13 with respect to the rotationally symmetrical structure of the mold cavity 12 basically part of a final shaping wall 15 which is bounded by the screen material 11 of the forming roller 5. With the pertinent mold cavities 12, it is possible to produce adhesive elements in the form of each one provided with a head part 16 as a widened end stem part 17th
  • the curvature of the respective track 14 in the direction of the head part 16 to be formed is designed to be stronger than in the direction of a foot part 18, via which the stem part 17 is connected to the carrier 10.
  • it has proven to be particularly advantageous if, viewed from the longitudinal direction of the stalk part 17 in the direction of the head part 16, the course of the track 14 with its greater curvature above the middle, preferably beginning in the upper third, is provided.
  • galvanic coating processes in particular electroplating processes, have proven in which first a cylindrical mold cavity (not shown) is coated or platinized with a coating material until the convex Trajectory 14 sets.
  • the adhesive elements shown in Figure 3 can be obtained with the method and apparatus described above.
  • the symmetrical Construction results directly from the production in a mold cavity 12 after the Fig.2 , Instead of the device shown in the Fig.1
  • a doctoring tool (not shown) can also be used which directly spends the plastic material into the mold cavities 12 in the sense of a doctoring process.
  • the cylindrical screen structure may form a belt that circulates between two cylindrical drive rollers (not shown), in which case the plastic material is again preferably doctored onto the belt surface.
  • a heat source or UV light may allow post-crosslinking as soon as the adhesive elements are removed from the mold cavities 12. This post-crosslinking is common, so that will not be discussed here at this point.
  • crosslinking with the mentioned means is provided, at least on one side, directly in the mold cavities 12.
  • the free widened head ends should run as a head part 16 outwardly flat. Since the individual mold cavities 12 are closed inwardly by the forming roller 5, it would not be possible to the extent that the air trapped there during the molding operation presses a concave air cushion into the free head end. To counter this, it may be provided to provide within the forming roller 5 a means which allows the air to escape or which allows the air in the mold cavity 12 to be sucked off, for example via a vacuum device or the like.
  • the stem and head design looks like results from the representation of the Fig.2 ,
  • the plastic material is displaced into the mold cavity 12 and then comes to rest there and then forms the flat head outside.
  • the plastic material solidifies in the mold itself and is then removed in the pre-solidified state from the mold cavity 12 or already largely cured in this; but only insofar as a demolding process is not affected.
  • the average constriction, due to the shape of the Rotationshyperboloids can still continue in such a way that at a further constricted point a kind of joint between the stem part 17 and the head part 16 is formed.
  • the pertinent joint is, as already stated, favorable for the operation of the van der Waals closure system.
  • Suitable plastic materials are inorganic and organic elastomers, in particular polyvinyl siloxane, as well as addition-crosslinking silicone elastomers, also in the form of two-component systems and acrylates.
  • the use of rubber materials is also possible.
  • the process can be particularly favorable if the plastic material used in each case is thixotropic.
  • Thixotropic behavior in the context of the invention is intended to mean the reduction of the structural strength during the shear stress phase and its more or less rapid but complete reconstruction during the subsequent rest phase. This degradation / recovery cycle is a fully reversible process and thixotropic behavior is definable as a time dependent behavior.
  • plastic materials have proven to be favorable, in which the viscosity measured with a rotational viscometer ranges from 7,000 to 15,000 mPas, but preferably a value of about 10,000 mPas at one Shear rate of 10 1 sec having.
  • X denotes a length which corresponds to the size of approximately 100 ⁇ m .
  • the geometric dimensions of the adhesive elements are given, the specified magnitudes of the better representation because of their direct precipitation in Figure 3 find that reflects only the structure of the adhesive element material in principle.
  • the adhesive element material according to the invention are more than 16,000 adhesive elements on a cm 2 substrate 10. From the top of the carrier 10 calculated until the completion of the adhesive element on the flat top top, each adhesive element has a height of about 100 ⁇ m, which is the Size scale X according to the Fig.3 corresponds.
  • the planar top surfaces have a diameter of about 50 ⁇ m and reduce towards the upper end of the stem part 17 (joint) to a size of about 30 ⁇ m.
  • an undercut is formed between the head part 16 and stem part 17 at the point of transition.
  • the height of the head portion 16 is about 10 ⁇ m and the size of the radial overhang of the head part 16 to the upper end of stem portion 17 is approximately 10 ⁇ m.
  • the distances between the boundaries of mutually adjacent opposite head portions 16 are 30 .mu.m to 40 .mu.m .
  • the diameter of the stem portion 17 is about 20 ⁇ m to 35 ⁇ m.
  • the pertinent proportions are only exemplary and can be changed in said size frame, in any case it must be ensured that compared to the stem parts 17, the head part 16 has a flat or slightly convex surface, which allows the effect of van der Waals forces, provided the adhesive element part a surface of any kind comes into contact. Due to the nanostructure of the adhesive elements, the adhesive element part which can be produced here on an industrial scale can no longer be seen with the naked eye and it is surprising that due to the adhesive element structure, a very secure releasable attachment takes place via the van der Waals forces.
  • Both the cross-sections of the head and the cross-sections of the cross-sections may be angular, in particular provided with a hexagonal cross-sectional shape, and the aspect ratio of each adhesive element is preferably between 1: 3 and 1: 5.
  • adhesive elements can be provided on the closure characteristic by means of van der Waals forces in a cost-effective and reliable manner on a large-scale industrial scale.

Landscapes

  • Slide Fasteners, Snap Fasteners, And Hook Fasteners (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Adhesives Or Adhesive Processes (AREA)
  • Laminated Bodies (AREA)

Claims (7)

  1. Procédé de fabrication d'éléments agrippants sur une matière (10) de support, en utilisant au moins une matière plastique, qui est mise dans un élément (12) donnant la forme, des éléments agrippants étant ainsi créés en ayant des extrémités élargies, dont l'agrippage est réalisé principalement au moyen de forces de Van-der-Waals, en utilisant comme matière plastique des élastomères minéraux et organiques, notamment du polyvinylsiloxane, des élastomères de silicone se réticulant par addition, également sous la forme de systèmes à deux composants, ainsi que des acrylates, caractérisé en ce qu'on utilise, comme élément respectif donnant la forme, un tamis (11) en forme de tambour ou de bande, qui est pourvu de plus de 10 000, toutefois de préférence de 16000, empreintes (12) de moule par cm2.
  2. Procédé suivant la revendication 1, caractérisé en ce que la matière plastique utilisée est thixotrope et a une viscosité, mesurée au viscosimètre de rotation, de 7 000 à 15 000 mPas, toutefois de préférence d'environ 10 000 mPas, à un gradient de cisaillement de 10 1 sec .
    Figure imgb0003
  3. Procédé suivant la revendication 1 ou 2, caractérisé en ce que l'empreinte (12) de moule respective est conformée à la manière d'un hyperboloïde.
  4. Procédé suivant l'une quelconque des revendications 1 à 3, caractérisé en ce qu'on utilise, comme matière plastique, une matière plastique dont l'angle de contact, en raison de l'énergie superficielle pour le mouillage par de l'eau, donne au moins une valeur plus grande que 60 degrés, de préférence plus grande que 70 degrés.
  5. Procédé suivant l'une quelconque des revendications 1 à 4, caractérisé en ce que les extrémités élargies des éléments agrippants sont sensiblement planes ou légèrement convexes.
  6. Procédé suivant l'une quelconque des revendications 1 à 5, caractérisé en ce que l'élément agrippant respectif est formé d'une partie (17) de tige d'une hauteur de 50 µm à 150 µm, de préférence d'environ 90 µm, et d'un diamètre de 10 µm à 40 µm, de préférence d'environ 30 µm, et en ce que les extrémités élargies ont, en tant que parties (18) de tête sur les parties (17) de tige, un diamètre de 15 µm à 70 µm, de préférence d'environ 50 µm.
  7. Procédé suivant l'une quelconque des revendications 1 à 6, caractérisé en ce que, pour des matières plastiques réticulables, on les post-réticule, pendant ou après la fabrication des éléments agrippants, par exemple par de la lumière UV.
EP04722156.9A 2004-03-12 2004-03-20 Procede pour realiser des elements adhesifs sur un materiau de support Expired - Lifetime EP1729607B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL04722156T PL1729607T3 (pl) 2004-03-12 2004-03-20 Sposób wytwarzania elementów sczepnych na materiale nośnym

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004012067A DE102004012067A1 (de) 2004-03-12 2004-03-12 Verfahren zum Herstellen von Haftelementen auf einem Trägermaterial
PCT/EP2004/002963 WO2005087033A1 (fr) 2004-03-12 2004-03-20 Procede pour realiser des elements adhesifs sur un materiau de support

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EP1729607A1 EP1729607A1 (fr) 2006-12-13
EP1729607B1 true EP1729607B1 (fr) 2014-09-10

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Country Link
US (1) US20070063375A1 (fr)
EP (1) EP1729607B1 (fr)
JP (1) JP4545790B2 (fr)
CN (1) CN1925766B (fr)
DE (1) DE102004012067A1 (fr)
ES (1) ES2505694T3 (fr)
PL (1) PL1729607T3 (fr)
WO (1) WO2005087033A1 (fr)

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JP6071158B2 (ja) * 2015-06-16 2017-02-01 株式会社ボックス 顔面へ取付けられるアンカー部材、その着色方法及び顔面装着部材
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US11219285B2 (en) 2015-12-24 2022-01-11 Ykk Corporation Molded surface fastener manufacturing method
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CN108017035A (zh) * 2016-10-28 2018-05-11 中国科学院深圳先进技术研究院 一种仿生壁虎干胶及其制备方法
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DE102017115704A1 (de) 2016-07-12 2018-04-12 Comprisetec Gmbh Bauteil zur reversiblen adhäsiven Anhaftung an einer glatten Fläche, Bausatz und Fertigungsverfahren

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JP4545790B2 (ja) 2010-09-15
EP1729607A1 (fr) 2006-12-13
PL1729607T3 (pl) 2015-02-27
JP2007528765A (ja) 2007-10-18
ES2505694T3 (es) 2014-10-10
CN1925766B (zh) 2010-09-22
US20070063375A1 (en) 2007-03-22
DE102004012067A1 (de) 2005-10-06
WO2005087033A1 (fr) 2005-09-22
CN1925766A (zh) 2007-03-07

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