EP0808586B1 - Method to manufacture a layered material comprising one layer with loops - Google Patents
Method to manufacture a layered material comprising one layer with loops Download PDFInfo
- Publication number
- EP0808586B1 EP0808586B1 EP19970401038 EP97401038A EP0808586B1 EP 0808586 B1 EP0808586 B1 EP 0808586B1 EP 19970401038 EP19970401038 EP 19970401038 EP 97401038 A EP97401038 A EP 97401038A EP 0808586 B1 EP0808586 B1 EP 0808586B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- layer
- base
- loops
- connecting agent
- self
- 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.)
- Revoked
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Images
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
- A44B18/0073—Attaching means
Definitions
- the present invention relates to assemblies laminates, or laminates, which have a first layer one side of which is secured, by lamination using of a liaison officer, with a first face of a base a second permeable layer comprising free loops which protrude from the second side of the base.
- the invention applies in particular to such sets that are flexible and that are used for the making, for example in the form of strips, the part female of a so-called hook-and-loop closure, the loops are intended to cooperate, in a separable connection attachment, with complementary male elements, by example of hooks, filiform elements with bulging heads or the like, etc.
- These female parts of hook-and-loop closures are used in particular for diapers.
- This layer of support may be an intermediate support, the assembly laminate then being attached to an article, or else it can be the article itself.
- Document EP-A-0 278 866 proposes a solution which consists of interposing an impermeable film between the base and the adhesive. But this solution, on the one hand, is expensive since it requires an additional layer by this film and, on the other hand, only displaces the problem since this film must itself be glued to the base.
- the object of the invention is to remedy these disadvantages in providing a laminating process which allows, reliably, simply and economically, laminate the first layer, or support layer, on the base of the second layer without the loops being interested in the liaison officer.
- the method according to the invention is characterized in that it consists in making the loops, at less on the surface, in a material presenting, in the laminating operating conditions, an affinity very little or no adhesion to the bond, while the material or materials constituting the first layer and the base of the second layer have a good adhesion affinity towards the liaison agent.
- laminating is carried out by partial thermal fusion of the first layer and / or the base of the second layer, the liaison agent being constituted by the products of fusion.
- the fusion product which is the liaison officer, an integral part of the structure of the first layer and / or the base.
- the loops are made of a material with a point of higher melting than that of the base material of the second layer.
- the base is at least partially made of polypropylene or a polyolefin derivative, and the loops are in polyamide, polyester or derivative polymer, the first layer being for example also made of polypropylene or a polyolefin derivative.
- the first layer is full, while the base of the second layer is perforated, especially mesh.
- the basis of the second layer is obtained by interlacing of threads and / or woven or knitted strips, in warp or weft knitting, the loops being made of wire and produced during manufacture from the base itself.
- the first layer is thin and consists, for example, of a flexible film.
- the laminate assembly shown schematically on the Figure has two laminated layers, namely a first support layer 1 and a second active layer 2 consisting, on the one hand, of a bottom or base 3 and of loops 4 protruding from one of the two sides of the base 3. Layers 1 and 2 are formed as shown above, so there is no need to describe them again.
- the first layer 1 has a face 5 which is laminated, as indicated above, on one side 6 of the base 3, while loops 4 protrude from the other side 7 from base 3.
- the loops 4 have, low affinity towards the liaison officer or zero, so layer 1 and base 3 are firmly laminated without the loops 4 coming to adhere to the base 3, or to the first layer 1 through base 3.
Landscapes
- Laminated Bodies (AREA)
- Slide Fasteners, Snap Fasteners, And Hook Fasteners (AREA)
- Prostheses (AREA)
- Materials For Medical Uses (AREA)
Description
La présente invention est relative aux ensembles stratifiés, ou laminés, qui comportent une première couche dont une face est solidarisée, par contrecollage à l'aide d'un agent de liaison, avec une première face d'une base d'une seconde couche perméable comprenant des boucles libres qui font saillie de la seconde face de la base.The present invention relates to assemblies laminates, or laminates, which have a first layer one side of which is secured, by lamination using of a liaison officer, with a first face of a base a second permeable layer comprising free loops which protrude from the second side of the base.
L'invention s'applique en particulier à de tels ensembles qui sont souples et qui sont utilisés pour la confection,par exemple sous la forme de bandes, de la partie femelle d'une fermeture dite auto-agrippante, dont les boucles sont destinées à coopérer, dans une liaison séparable d'accrochage, avec des éléments mâles complémentaires, par exemple des crochets, des éléments filiformes à tête renflée ou analogue, etc. Ces parties femelles de fermetures autoagrippantes sont utilisées notamment pour les couchesculottes.The invention applies in particular to such sets that are flexible and that are used for the making, for example in the form of strips, the part female of a so-called hook-and-loop closure, the loops are intended to cooperate, in a separable connection attachment, with complementary male elements, by example of hooks, filiform elements with bulging heads or the like, etc. These female parts of hook-and-loop closures are used in particular for diapers.
Pour des raisons de prix de revient, on est amené à fabriquer la base ci-dessus sous une forme légère et ouverte, et donc d'une structure mécaniquement fragile et dimensionnellement instable, sans pour autant sacrifier la qualité des boucles qui constituent l'élément actif primordial de la partie femelle de la fermeture autoagrippante. Cette fragilité et cette instabilité de la base induisent des difficultés de mise en oeuvre, notamment pour positionner et fixer à grande vitesse cette partie femelle sur son support, ainsi que des difficultés d'utilisation, en raison des sollicitations d'arrachement relativement importantes auxquelles la base est soumise et qui proviennent de l'action des éléments mâles d'accrochage sur les boucles. For cost reasons, we are led to fabricate the above base in a light and open form, and therefore of a mechanically fragile structure and dimensionally unstable, without sacrificing the quality of the loops which constitute the active element essential of the female part of the Velcro closure. This fragility and instability of the base induce implementation difficulties, especially for position and fix at high speed this female part on its support, as well as difficulties of use, in reason for relatively large pullout requests important to which the database is subject and which come from the action of the male hooking elements on the buckles.
On est donc conduit à renforcer la base en la contrecollant sur une couche de support plus résistante, par exemple une pellicule pleine, fine et souple. Cette couche de support peut être un support intermédiaire, l'ensemble stratifié étant ensuite fixé sur un article, ou bien il peut être l'article lui-même.We are therefore led to strengthen the base by laminating on a more resistant support layer, by example a full, thin and flexible film. This layer of support may be an intermediate support, the assembly laminate then being attached to an article, or else it can be the article itself.
Toutefois, on rencontre des difficultés, lors de la fabrication d'un tel ensemble stratifié, car les boucles ont tendance à se coller également sur la couche de support, conjointement avec la matière de la base, ce qui détruit leur pouvoir auto-agrippant du fait que leur sommet est fermement plaqué contre la base et/ou la couche de support et ne peut donc pas coopérer, dans la liaison d'accrochage voulue, avec les éléments mâles. En effet, en général, pour réaliser ce laminage, on est amené à presser fortement les deux éléments de l'ensemble l'un contre l'autre à l'aide de calandres, par exemple.However, difficulties are encountered during the manufacture of such a laminate assembly, because the loops have tendency to also stick to the support layer, together with the base material, which destroys their self-gripping power due to the fact that their top is firmly pressed against the base and / or the support layer and cannot therefore not cooperate, in the desired attachment link, with the male elements. Indeed, in general, to achieve this rolling, we have to strongly press the two elements of the whole one against the other using calenders, by example.
Dans le cas où la base n'est pas du type léger ou ouvert, par exemple dans le cas de la partie femelle d'une fermeture auto-agripante décrite dans le document GB-A-1 438 721, ce pressage intense n'est pas gênant car l'adhésif ramolli ne peut pas traverser la base et ne peut donc pas intéresser les boucles.In the case where the base is not of the light type or open, for example in the case of the female part of a self-gripping closure described in document GB-A-1 438 721, this intense pressing is not annoying because the adhesive softened cannot pass through the base and therefore cannot interest the curls.
En revanche, dans le cas où la base est du type léger ou ouvert, comme dans la présente invention, ce risque de traversée de la base par l'adhésif est important.On the other hand, in the case where the base is of the type slight or open, as in the present invention, this risk through the base with the adhesive is important.
Le document EP-A-0 278 866 propose une solution qui consiste à interposer une pellicule imperméable entre la base et l'adhésif. Mais cette solution, d'une part, est onéreuse puisqu'elle nécessite une couche supplémentaire constituée par cette pellicule et, d'autre part, ne fait que déplacer le problème puisque cette pellicule doit elle-même être collée à la base. Document EP-A-0 278 866 proposes a solution which consists of interposing an impermeable film between the base and the adhesive. But this solution, on the one hand, is expensive since it requires an additional layer by this film and, on the other hand, only displaces the problem since this film must itself be glued to the base.
L'invention a pour but de remédier à ces inconvénients en fournissant un procédé de contrecollage qui permet, de manière fiable, simple et économique, de contrecoller la première couche, ou couche de support, sur la base de la seconde couche sans que les boucles soient intéressées par l'agent de liaison.The object of the invention is to remedy these disadvantages in providing a laminating process which allows, reliably, simply and economically, laminate the first layer, or support layer, on the base of the second layer without the loops being interested in the liaison officer.
A cet effet, le procédé selon l'invention est caractérisé en ce qu'il consiste à réaliser les boucles, au moins en surface, en une matière présentant, dans les conditions opératoires de contrecollage, une affinité d'adhérence très faible ou nulle à l'égard de l'agent de liaison, tandis que la ou les matières constituant la première couche et la base de la seconde couche ont une bonne affinité d'adhérence à l'égard de l'agent de liaison.To this end, the method according to the invention is characterized in that it consists in making the loops, at less on the surface, in a material presenting, in the laminating operating conditions, an affinity very little or no adhesion to the bond, while the material or materials constituting the first layer and the base of the second layer have a good adhesion affinity towards the liaison agent.
Ainsi, dans le procédé selon l'invention, on réalise le contrecollage direct de la première couche et de la base de la seconde couche sans que les boucles soient elles-mêmes collées, ce qui conserve à celles-ci toute leur capacité d'accrochage.Thus, in the method according to the invention, one performs direct lamination of the first layer and the base of the second layer without the loops being themselves glued, which keeps them all their hanging capacity.
Suivant le mode de mise en oeuvre de l'invention, le contrecollage s'effectue par fusion thermique partielle de la première couche et/ou de la base de la seconde couche, l'agent de liaison étant constitué par les produits de fusion. Après refroidissement, le produit de fusion, qui constitue l'agent de liaison, fait partie intégrante de la structure de la première couche et/ou de la base. Dans ce cas, les boucles sont en une matière présentant un point de fusion plus élevé que celui de la matière constituant la base de la deuxième couche. Dans un mode pratique de mise en oeuvre, la base est au moins partiellement en polypropylène ou en un dérivé polyoléfine, et les boucles sont en polyamide, en polyester ou en polymère dérivé, la première couche étant par exemple également en polypropylène ou en un dérivé polyoléfine. According to the mode of implementation of the invention, laminating is carried out by partial thermal fusion of the first layer and / or the base of the second layer, the liaison agent being constituted by the products of fusion. After cooling, the fusion product, which is the liaison officer, an integral part of the structure of the first layer and / or the base. In this case, the loops are made of a material with a point of higher melting than that of the base material of the second layer. In a practical mode of setting work, the base is at least partially made of polypropylene or a polyolefin derivative, and the loops are in polyamide, polyester or derivative polymer, the first layer being for example also made of polypropylene or a polyolefin derivative.
D'une manière générale, la première couche est pleine, tandis que la base de la seconde couche est ajourée, notamment à mailles. Par exemple, la base de la seconde couche est obtenue par entrelacement de fils et/ou de bandelettes tissés ou tricotés, en tricot chaíne ou trame, les boucles étant en fil et réalisées lors de la fabrication de la base elle-même.Generally, the first layer is full, while the base of the second layer is perforated, especially mesh. For example, the basis of the second layer is obtained by interlacing of threads and / or woven or knitted strips, in warp or weft knitting, the loops being made of wire and produced during manufacture from the base itself.
Enfin, de préférence, la première couche est fine et est constituée, par exemple, d'une pellicule souple.Finally, preferably, the first layer is thin and consists, for example, of a flexible film.
On comprendra bien l'invention à la lecture du complément de description qui va suivre et en référence au dessin annexé qui fait partie de la description et dont la Figure unique est une coupe transversale schématique d'un ensemble stratifié obtenu par le procédé selon l'invention.The invention will be clearly understood on reading the additional description which follows and with reference to attached drawing which forms part of the description and the Single figure is a schematic cross section of a laminate assembly obtained by the process according to the invention.
L'ensemble stratifié représenté schématiquement sur
la Figure comporte deux couches contrecollées, à savoir une
première couche 1 de support et une seconde couche active 2
constituée, d'une part, d'un fond ou base 3 et de boucles 4
faisant saillie à partir de l'une des deux faces de la base
3.
Les couches 1 et 2 sont constituées comme indiqué
ci-dessus, de sorte qu'il n'est pas nécessaire de les décrire
à nouveau.The laminate assembly shown schematically on
the Figure has two laminated layers, namely a
La première couche 1 présente une face 5 qui est
contrecollée, comme indiqué ci-dessus, sur une face 6 de la
base 3, tandis que les boucles 4 font saillie de l'autre face
7 de la base 3.The
Pour ce mode de contrecollage, c'est-à-dire par fusion partielle on pourra utiliser tout dispositif approprié, connu en lui-même, pour la mise en oeuvre des diverses opérations.For this laminating mode, i.e. by partial merger we can use everything suitable device, known per se, for setting up work of various operations.
Lors de ce contrecollage, les boucles 4 présentent,
à l'égard de l'agent de liaison, une affinité faible ou
nulle, de sorte que la couche 1 et la base 3 sont fermement
contrecollées sans que les boucles 4 ne viennent adhérer à la
base 3, ou à la première couche 1 à travers la base 3.During this lamination, the
Claims (9)
- A method of producing a female part of a self-gripping element comprising:characterised in thata first layer (1) forming a supporta second layer (2) comprising a base (3) and free loops (4) on one (7) of its surfaces, the second layer being of a light and perforate structure, the production method comprising the step which consists in:sticking the second layer (2) by its surface (6) remote from the surface (7) where the loops are situated, on to the first support-forming layer (1), by the application of a connecting agent between the two layers (1) and (2),the loops (4) are made of a material which, under the sticking operating conditions, have a first very low or zero adhesion affinity with the connecting agent; andthe base (3) and the first layer (1) are made from a material or materials having a second adhesion affinity which is good with respect to the connecting agent.
- A production method according to claim 1, characterised in that the base (3) of the second layer (2) has meshes.
- A method according to claim 2, characterised in that the base (3) of the second layer (2) is obtained by interlacing yarns and/or bands which are woven or knitted, in warp or weft knit, the loops (4) being of yarn and made during the production of the base (3).
- A method according to any one of claims 1 to 3, characterised in that sticking is effected by partial thermal fusion of the first layer (1) and/or of the base (3) of the second layer (2), the connecting agent comprising fusion products which, after cooling, form an integral part of the structure of the first layer and/or of the base of the second layer.
- A method according to claim 4, characterised in that the loops (4) are of a material having a higher melting point than that of the material making up the base (3) of the second layer (2).
- A method according to claim 5, characterised in that the base (3) is at least partially of polypropylene or a polyolefin derivative and the loops (4) are of polyamide, polyester or a polymer derivative.
- A method according to claim 6, characterised in that the first layer (1) is of polypropylene or a polyolefin derivative.
- A female part of a self-gripping element produced by the production method according to any one of claims 1 to 7.
- Self-gripping system comprising a female part according to claim 8.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9606398 | 1996-05-23 | ||
| FR9606398A FR2748911B1 (en) | 1996-05-23 | 1996-05-23 | METHOD FOR MANUFACTURING A LAMINATE ASSEMBLY COMPRISING A LAYER PROVIDED WITH LOOPS |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0808586A1 EP0808586A1 (en) | 1997-11-26 |
| EP0808586B1 true EP0808586B1 (en) | 2002-03-13 |
Family
ID=9492386
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP19970401038 Revoked EP0808586B1 (en) | 1996-05-23 | 1997-05-07 | Method to manufacture a layered material comprising one layer with loops |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP0808586B1 (en) |
| JP (1) | JPH1058584A (en) |
| DE (1) | DE69710943T2 (en) |
| ES (1) | ES2171852T3 (en) |
| FR (1) | FR2748911B1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19952417A1 (en) * | 1999-10-30 | 2001-05-03 | Binder Gottlieb Gmbh & Co | Process for the manufacture of an adhesive fastener part |
| KR101895710B1 (en) * | 2017-02-22 | 2018-09-06 | 주식회사 아이케이씨 | Fastener tape combining device for seat pads |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4964106U (en) * | 1972-09-12 | 1974-06-05 | ||
| US4761318A (en) * | 1985-04-15 | 1988-08-02 | Minnesota Mining And Manufacturing Company | Loop fastener portion with thermoplastic resin attaching and anchoring layer |
| FR2610488B1 (en) * | 1987-02-10 | 1990-06-29 | Kaysersberg Sa | SELF-GRIPPING FASTENER, PARTICULARLY FOR A SINGLE USE FULL CHANGE, AND METHOD FOR THE PRODUCTION THEREOF |
| WO1994023609A1 (en) * | 1993-04-16 | 1994-10-27 | Minnesota Mining And Manufacturing Company | Loop fastener material storage/dispensing assembly |
| US5470424A (en) * | 1993-11-30 | 1995-11-28 | Kimberly-Clark Corporation | Process for forming liquid impermeable sheet material having a fibrous surface and products formed thereby |
-
1996
- 1996-05-23 FR FR9606398A patent/FR2748911B1/en not_active Expired - Fee Related
-
1997
- 1997-05-07 EP EP19970401038 patent/EP0808586B1/en not_active Revoked
- 1997-05-07 DE DE1997610943 patent/DE69710943T2/en not_active Revoked
- 1997-05-07 ES ES97401038T patent/ES2171852T3/en not_active Expired - Lifetime
- 1997-05-22 JP JP9132231A patent/JPH1058584A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| EP0808586A1 (en) | 1997-11-26 |
| FR2748911A1 (en) | 1997-11-28 |
| FR2748911B1 (en) | 1998-07-10 |
| DE69710943D1 (en) | 2002-04-18 |
| DE69710943T2 (en) | 2002-10-31 |
| ES2171852T3 (en) | 2002-09-16 |
| JPH1058584A (en) | 1998-03-03 |
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