EP0329577B1 - Method for making patterns on needled non-woven fabrics - Google Patents
Method for making patterns on needled non-woven fabrics Download PDFInfo
- Publication number
- EP0329577B1 EP0329577B1 EP89420052A EP89420052A EP0329577B1 EP 0329577 B1 EP0329577 B1 EP 0329577B1 EP 89420052 A EP89420052 A EP 89420052A EP 89420052 A EP89420052 A EP 89420052A EP 0329577 B1 EP0329577 B1 EP 0329577B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- embossing
- cylinder
- temperature
- needled
- needled fabric
- 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.)
- Expired - Lifetime
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Classifications
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06C—FINISHING, DRESSING, TENTERING OR STRETCHING TEXTILE FABRICS
- D06C23/00—Making patterns or designs on fabrics
- D06C23/04—Making patterns or designs on fabrics by shrinking, embossing, moiréing, or crêping
Definitions
- the present invention relates to a process for obtaining patterns by embossing on a vertical needle punched with thermoplastic fibers, the method consisting, in known manner, in subjecting the looped face of the needle punch to the action of an embossing cylinder whose depth of etching is less than the height of the needled loops, the embossing cylinder being brought to a given temperature and the counterpart also being heated.
- a method is already described in document US-A-3,997,946.
- the Applicant has set itself the goal of developing a process for obtaining special effects and in particular structured effects or "patterns" on this type of vertical needle punch, a process which it is possible to implement as late as possible in the manufacturing chain, in particular to allow product differentiation just before delivery to resellers.
- the support which one wishes to emboss is an article having relatively large pile heights (about 3 mm), as is the case with vertical needles, it seems essential, in order to achieve interesting and permanent structural effects, using embossing cylinders whose engraving depth corresponds essentially to the height of the bristles.
- the engraving depth of the embossing cylinder may be less than the height of the bristles, but it does not provide any precision on the temperature to which the embossing cylinder is brought.
- the Applicant has surprisingly determined that it is possible to obtain very interesting structured effects on a vertical needle punch, without harming its appearance and feel, playing not only on the depth of the engraving, but also on the temperature of the embossing cylinder and its counterpart.
- the heating temperature of the embossing cylinder is significantly lower than the temperature of softening of the needled thermoplastic fibers.
- the vertical needle punch is generally designated by 2, the embossing cylinder by 3 and the counterpart by 4.
- the installation used for implementing the method according to the invention and shown very diagrammatically in FIG. 2 essentially comprises a storage and unrolling station 6 for the vertical needlework 2, a storage and unrolling station 7 of the sheet of paper 8 intended to be applied by gluing to the reverse side of the needle 2, means 9 making it possible to secure this sheet 8 to the underside of the needled 2 and an embossing cylinder 3-against-part 4 assembly intended to communicate to the vertical needled 2 the desired structural effect, according to the invention.
- a sheet of fine denier polypropylene fibers (from 3 to 6 decitex) is prepared, which is subjected, in a conventional manner and on an apparatus not shown in the drawing, to successive carding, consolidation operations. by flat needling and looping by special needles. This produces the vertical needle 2 having loops or bristles 5a of about 3 mm in height.
- This needled 2 is then passed continuously over a smooth calender 9 which provides the laminating on the reverse side 4 of the needled 2 of the backing paper 8 coming from the roll 7.
- a means of applying glue (not shown in drawing) is planned before arrival at the grille 9.
- the needled assembly 2 - paper 8 is then subjected to a hot embossing process by passage between the embossing cylinder 3, acting by its etching on the bristles 5a and the counterpart 4.
- the engraving of the embossing cylinder 3 is chosen so that its depth is in all cases less than the height of the bristles 5a of the vertical needlework 2. In the present case, the depth of this engraving is from 1 to 2 mm according to the effect you want to achieve.
- the embossing cylinder 3 is brought to a temperature between 120 and 140 ° C, a temperature much lower than the softening temperature (170 ° C) of the polypropylene fibers; the counterpart 4 is brought to a temperature of approximately 160 ° C. and the embossing action is exerted at a pressure of approximately 40 bars.
- the vertical needle 2 After passing through the embossing device, the vertical needle 2 has the appearance shown diagrammatically in FIG. 1 where it can be seen that the part of the bristles 5b subjected to the embossing action is not completely crushed; the article therefore retains its appearance and its textile feel without observing plasticization as could be the case if the softening temperature of the thermoplastic fiber were reached, or if one worked with etching depths such as the hair 5a is crushed over their entire height.
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Treatment Of Fiber Materials (AREA)
- Nonwoven Fabrics (AREA)
- Materials For Medical Uses (AREA)
Abstract
Description
La présente invention concerne un procédé d'obtention de motifs par gaufrage sur aiguilleté vertical à fibres thermoplastiques, le procédé consistant, de façon connue, à soumettre la face bouclée de l'aiguilleté à l'action d'un cylindre gaufreur dont la profondeur de gravure est inférieure à la hauteur des boucles de l'aiguilleté, le cylindre gaufreur étant porté à une température donnée et la contre-partie étant également chauffée. Un tel procédé est déjà décrit dans le document US-A-3 997 946.The present invention relates to a process for obtaining patterns by embossing on a vertical needle punched with thermoplastic fibers, the method consisting, in known manner, in subjecting the looped face of the needle punch to the action of an embossing cylinder whose depth of etching is less than the height of the needled loops, the embossing cylinder being brought to a given temperature and the counterpart also being heated. Such a method is already described in document US-A-3,997,946.
On utilise, depuis de nombreuses années, pour la réalisation de revêtements de sol puis de revêtements muraux, des nappes non-tissées consolidées par aiguilletage traditionnel et auxquelles un aspect velours ou bouclé a été obtenu par l'action d'aiguilles spéciales telles que des aiguilles à fourche.For many years, non-woven plies consolidated by traditional needling and for which a velvet or looped appearance has been obtained by the action of special needles, have been used for the production of floor coverings and then wall coverings. fork needles.
On a déjà cherché à modifier l'aspect de ce type d'aiguilleté dit aiguilleté vertical en faisant varier la pénétration des aiguilles de bouclage ; on peut ainsi obtenir des boucles de hauteur différente en fonction du dessin à obtenir.Attempts have already been made to modify the appearance of this type of needle punch called vertical needle stitching by varying the penetration of the looping needles; it is thus possible to obtain loops of different height depending on the design to be obtained.
Il est bien évident que ce type d'effet doit être prévu lors de la fabrication même de l'aiguilleté vertical.It is obvious that this type of effect must be expected during the manufacture of the vertical needle punch.
La Demanderesse s'est donné pour but de mettre au point un procédé d'obtention d'effets spéciaux et notamment d'effets structurés ou "motifs" sur ce 'type d'aiguilleté vertical, procédé qu'il soit possible de mettre en oeuvre le plus tard possible dans la chaîne de fabrication afin notamment de permettre une différenciation de produit juste avant sa livraison aux revendeurs.The Applicant has set itself the goal of developing a process for obtaining special effects and in particular structured effects or "patterns" on this type of vertical needle punch, a process which it is possible to implement as late as possible in the manufacturing chain, in particular to allow product differentiation just before delivery to resellers.
Les techniques de gaufrage semblaient être spécialement intéressantes dans ce but.Embossing techniques seemed to be especially interesting for this purpose.
On sait que les procédés de gaufrage classiques consistent à faire passer le support ou la nappe auquel on désire communiquer des effets de structure entre un cylindre gravé selon le dessin que l'on désire obtenir et une contrepartie lisse. Dans le cas, de plus en plus fréquent, où le support comporte une proportion importante de fibres ou de fils thermoplastiques, le cylindre gravé est porté à une température proche du point de ramollissement de ces fibres ou fils et c'est l'action combinée de la chaleur et de la pression, jointe à la profondeur de la gravure, qui communiquent au support l'effet de structure permanent désiré.It is known that conventional embossing methods consist in passing the support or the web to which it is desired to communicate structural effects between a cylinder engraved according to the design which it is desired to obtain and a smooth counterpart. In the case, more and more frequent, where the support comprises a significant proportion of fibers or thermoplastic threads, the engraved cylinder is brought to a temperature close to the softening point of these fibers or threads and it is the combined action heat and pressure, joined to the depth of the engraving, which communicate to the support the desired permanent structure effect.
Quand le support que l'on désire gaufrer est un article présentant des hauteurs de poil relativement importantes (environ 3 mm), comme c'est le cas des aiguilletés verticaux, il semble indispensable, pour arriver à des effets de structure intéressants et permanents, d'utiliser des cylindres gaufreurs dont la profondeur de gravure corresponde essentiellement à la hauteur des poils.When the support which one wishes to emboss is an article having relatively large pile heights (about 3 mm), as is the case with vertical needles, it seems essential, in order to achieve interesting and permanent structural effects, using embossing cylinders whose engraving depth corresponds essentially to the height of the bristles.
Or, la Demanderesse a pu déterminer que l'utilisation de cylindres gaufreurs de ce type présentait de nombreux inconvénients parmi lesquels on peut citer le prix de revient élevé à la gravure et surtout l'aspect "plastifié" qu'ils communiquent à l'aiguilleté vertical ; celui-ci perd pratiquement tout aspect textile, si recherché dans le domaine des revêtements muraux.However, the Applicant has been able to determine that the use of embossing cylinders of this type had many drawbacks, among which there may be mentioned the high cost price for engraving and above all the "plasticized" aspect which they impart to the needle punch. vertical; this one loses practically any textile aspect, so sought in the field of wall coverings.
Le document US-A-3997946 précité suggère que la profondeur de gravure du cylindre gaufreur puisse être inférieure à la hauteur des poils, mais il ne fournit aucune précision sur la température à laquelle est porté le cylindre gaufreur.The aforementioned document US-A-3997946 suggests that the engraving depth of the embossing cylinder may be less than the height of the bristles, but it does not provide any precision on the temperature to which the embossing cylinder is brought.
En comparaison avec ce qui précède, la Demanderesse a déterminé, de façon surprenante, qu'il était possible d'obtenir des effets structurés très intéressants sur un aiguilleté vertical, sans nuire à son aspect et à son toucher, en jouant non seulement sur la profondeur de la gravure, mais aussi sur la température du cylindre de gaufrage et de sa contrepartie.In comparison with the above, the Applicant has surprisingly determined that it is possible to obtain very interesting structured effects on a vertical needle punch, without harming its appearance and feel, playing not only on the depth of the engraving, but also on the temperature of the embossing cylinder and its counterpart.
A cet effet, dans le procédé selon l'invention d'obtention de motifs par gaufrage sur des non-tissés aiguilletés, procédé du genre précisé en introduction, il est prévu que la température de chauffage du cylindre gaufreur est nettement inférieure à la température de ramollissement des fibres thermoplastiques de l'aiguilleté.To this end, in the process according to the invention for obtaining patterns by embossing on needled nonwovens, a process of the kind specified in the introduction, it is provided that the heating temperature of the embossing cylinder is significantly lower than the temperature of softening of the needled thermoplastic fibers.
On peut ainsi obtenir toute une série d'effets structurés extrêmement intéressants sans pour autant altérer le toucher de l'aiguilleté et sans occasionner de plastification des fibres.We can thus obtain a whole series of extremely interesting structured effects without altering the feel of the needle punch and without causing plasticization of the fibers.
La présente invention sera mieux comprise et ses avantages ressortiront bien de la description qui suit d'un mode de réalisation du procédé selon l'invention, en référence au dessin schématique annexé dans lequel :
- Figure 1 est une coupe schématique d'un aiguilleté vertical soumis au procédé selon l'invention ;
- Figure 2 est un schéma de l'installation utilisée pour la mise en oeuvre du procédé.
- Figure 1 is a schematic section of a vertical needle punch subjected to the method according to the invention;
- Figure 2 is a diagram of the installation used for the implementation of the method.
Sur les figures, l'aiguilleté vertical est désigné de façon générale par 2, le cylindre gaufreur par 3 et la contre-partie par 4.In the figures, the vertical needle punch is generally designated by 2, the embossing cylinder by 3 and the counterpart by 4.
L'installation utilisée pour la mise en oeuvre du procédé selon l'invention et représentée de façon très schématique à la figure 2 comporte essentiellement un poste de stockage et de déroulage 6 de l'aiguilleté vertical 2, un poste de stockage et de déroulage 7 de la feuille de papier 8 prévue pour être appliquée par collage sur la face envers de l'aiguilleté 2, des moyens 9 permettant d'assurer la solidarisation de cette feuille 8 sur l'envers de l'aiguilleté 2 et un ensemble cylindre gaufreur 3- contre-partie 4 destiné à communiquer à l'aiguilleté vertical 2 l'effet de structure désiré, selon l'invention.The installation used for implementing the method according to the invention and shown very diagrammatically in FIG. 2 essentially comprises a storage and unrolling station 6 for the
Le procédé d'obtention de motifs par gaufrage sur aiguilleté vertical selon l'invention va maintenant être décrit en détail, à titre d'exemple non limitatif.The process for obtaining patterns by embossing on a vertical needle punch according to the invention will now be described in detail, by way of nonlimiting example.
On prépare, tout d'abord, une nappe de fibres de polypropylène fin denier (de 3 à 6 décitex) que l'on soumet, de façon classique et sur un appareillage non représenté au dessin, à des opérations successives de cardage, de consolidation par aiguilletage à plat et de bouclage par aiguilles spéciales. On obtient ainsi l'aiguilleté vertical 2 présentant des boucles ou poils 5a d'environ 3 mm de hauteur.First of all, a sheet of fine denier polypropylene fibers (from 3 to 6 decitex) is prepared, which is subjected, in a conventional manner and on an apparatus not shown in the drawing, to successive carding, consolidation operations. by flat needling and looping by special needles. This produces the
On fait ensuite passer cet aiguilleté 2 en continu sur une calandre lisse 9 qui assure le contre-collage sur la face envers 4 de l'aiguilleté 2 du papier support 8 provenant du rouleau 7. Un moyen d'application de colle (non représenté au dessin) est prévu avant l'arrivée à la calandre 9.This needled 2 is then passed continuously over a
L'ensemble aiguilleté 2 - papier 8 est ensuite soumis à un processus de gaufrage à chaud par passage entre le cylindre gaufreur 3, agissant par sa gravure sur les poils 5a et la contre-partie 4.The needled assembly 2 -
La gravure du cylindre gaufreur 3 est choisie de telle sorte que sa profondeur soit dans tous les cas inférieure à la hauteur des poils 5a de l'aiguilleté vertical 2. Dans le cas présent, la profondeur de cette gravure est de 1 à 2 mm suivant l'effet que l'on désire obtenir.The engraving of the embossing cylinder 3 is chosen so that its depth is in all cases less than the height of the
Le cylindre gaufreur 3 est porté à une température se situant entre 120 et 140°C, température nettement inférieure à la température de ramollissement (170°C) des fibres de polypropylène ; la contre-partie 4 est portée à une température d'environ 160°C et l'action de gaufrage est exercée à une pression d'environ 40 bars.The embossing cylinder 3 is brought to a temperature between 120 and 140 ° C, a temperature much lower than the softening temperature (170 ° C) of the polypropylene fibers; the counterpart 4 is brought to a temperature of approximately 160 ° C. and the embossing action is exerted at a pressure of approximately 40 bars.
Après passage dans le dispositif de gaufrage, l'aiguilleté vertical 2 présente l'aspect schématisé à la figure 1 où l'on voit bien que la partie des poils 5b soumise à l'action de gaufrage n'est pas complètement écrasée ; on conserve donc à l'article son aspect et son toucher textile sans observer de plastification comme ce pourrait être le cas si l'on atteignait la température de ramollissement de la fibre thermoplastique, ou si l'on travaillait avec des profondeurs de gravure telles que le poils 5a soit écrasés sur toute leur hauteur.After passing through the embossing device, the
Il est bien évident qu'en jouant sur le dessin de gravure communiqué au cylindre gaufreur 3, on peut obtenir une gravure tout à fait intéressante de motifs ; de même des effets spéciaux peuvent être obtenus par teinture ou impression préalable de l'aiguilleté vertical 2.It is quite obvious that by playing on the engraving design communicated to the embossing cylinder 3, one can obtain a quite interesting engraving of patterns; similarly special effects can be obtained by dyeing or prior printing of the
Claims (3)
- A method of making patterns by embossing a vertically needled fabric of thermoplastic fibres, consisting of subjecting the looped face of the needled fabric (2) to the action of an embossing cylinder (3) of which the depth of embossing is less than the height of the loops (5a) of the needled fabric (2), the embossing cylinder (3) being raised to a given temperature and the counter-cylinder (4) being also heated, characterised in that the temperature of heating of the embossing cylinder (3) is substantially less than the softening temperature of the thermoplastic fibres of the needled fabric (2).
- A method according to Claim 1, characterised in that the thermoplastic fibres are fibres of polypropylene.
- A method according to Claim 1 and Claim 2, characterised in that the embossing cylinder is raised to a temperature between 120° and 140° C and the counter-cylinder to a temperature of about 160° C, the embossing pressure being about 40 bars.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT89420052T ATE82025T1 (en) | 1988-02-16 | 1989-02-15 | METHOD OF MAKING PATTERNS ON NEEDLE-TREATED NON-WOVEN FABRICS BY EMBOSSING. |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8802185 | 1988-02-16 | ||
| FR8802185A FR2627197B1 (en) | 1988-02-16 | 1988-02-16 | PROCESS FOR OBTAINING SPECIAL EFFECTS ON VERTICAL NEEDLE WOVEN AS WELL AS THE NEEDLES OBTAINED |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0329577A1 EP0329577A1 (en) | 1989-08-23 |
| EP0329577B1 true EP0329577B1 (en) | 1992-11-04 |
Family
ID=9363541
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP89420052A Expired - Lifetime EP0329577B1 (en) | 1988-02-16 | 1989-02-15 | Method for making patterns on needled non-woven fabrics |
Country Status (6)
| Country | Link |
|---|---|
| EP (1) | EP0329577B1 (en) |
| JP (1) | JPH01246465A (en) |
| AT (1) | ATE82025T1 (en) |
| AU (1) | AU609248B2 (en) |
| DE (1) | DE68903340D1 (en) |
| FR (1) | FR2627197B1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6818282B2 (en) | 2002-05-14 | 2004-11-16 | Awi Licensing Company | Resilient flooring structure with encapsulated fabric |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19734943C2 (en) * | 1997-08-12 | 2002-02-21 | Thueringer Daemmstoffwerke Gmb | Process for profiling the surface of a cladding element with insulating properties |
| ITFI20120093A1 (en) * | 2012-05-15 | 2013-11-16 | Antonio Masi | CARPET |
| CN103643434A (en) * | 2013-11-08 | 2014-03-19 | 苏州宝丽洁日化有限公司 | Device for embossing non-woven fabric with double-faced concave embossing |
| CN103643433A (en) * | 2013-11-08 | 2014-03-19 | 苏州宝丽洁日化有限公司 | Device for embossing non-woven fabric with double-faced malposed embossing |
| CN103643435A (en) * | 2013-11-08 | 2014-03-19 | 苏州宝丽洁日化有限公司 | Device for embossing non-woven fabric with front-faced embossing |
| FR3112350B1 (en) * | 2020-07-10 | 2022-09-23 | Faurecia Automotive Ind | Process for producing a patterned interior covering, in particular a floor covering for a motor vehicle |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1495270A (en) * | 1965-10-01 | 1967-09-15 | Girmes Werke Ag | Method and device for treating fluffy fabrics as well as fabrics according to those obtained by the above process or the like |
| DE2021188C3 (en) * | 1970-04-30 | 1979-09-27 | Textilausruestungs-Gesellschaft Schroers & Co, 4150 Krefeld | Process for producing a pattern on the pile side of pile fabrics |
| BE766310A (en) * | 1970-04-30 | 1971-09-16 | Schroers Co Textilausruest | METHOD AND DEVICE FOR MAKING DRAWING PATTERNS ON THE UPPER FACE OF A THREE-DIMENSIONAL FLAT TEXTILE STRUCTURE |
| US4101358A (en) * | 1975-06-26 | 1978-07-18 | Hercules Incorporated | Method of making network structures |
| US3997946A (en) * | 1973-12-20 | 1976-12-21 | Polrotor Inc. | Method for conveying patterned pile fabrics |
| FR2353669A1 (en) * | 1976-05-31 | 1977-12-30 | Tyber Anc Nv | Upgrading pile coated fabrics - by thermal deformation of the hair coating on a more heat resistant canvas base |
| EP0136368B1 (en) * | 1983-10-03 | 1988-09-21 | Saueressig & Co. | Method of making embossing deformations on webs between an embossing roller and a formed counter roller, and device for carrying out this method |
| JPS60143926A (en) * | 1983-12-30 | 1985-07-30 | Nippon Petrochem Co Ltd | Method and apparatus for forming rugged sheet |
-
1988
- 1988-02-16 FR FR8802185A patent/FR2627197B1/en not_active Expired - Lifetime
-
1989
- 1989-02-15 DE DE8989420052T patent/DE68903340D1/en not_active Expired - Lifetime
- 1989-02-15 EP EP89420052A patent/EP0329577B1/en not_active Expired - Lifetime
- 1989-02-15 AU AU29975/89A patent/AU609248B2/en not_active Ceased
- 1989-02-15 AT AT89420052T patent/ATE82025T1/en not_active IP Right Cessation
- 1989-02-16 JP JP1037294A patent/JPH01246465A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6818282B2 (en) | 2002-05-14 | 2004-11-16 | Awi Licensing Company | Resilient flooring structure with encapsulated fabric |
Also Published As
| Publication number | Publication date |
|---|---|
| EP0329577A1 (en) | 1989-08-23 |
| DE68903340D1 (en) | 1992-12-10 |
| JPH01246465A (en) | 1989-10-02 |
| AU2997589A (en) | 1989-08-17 |
| FR2627197A1 (en) | 1989-08-18 |
| AU609248B2 (en) | 1991-04-26 |
| FR2627197B1 (en) | 1990-06-08 |
| ATE82025T1 (en) | 1992-11-15 |
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