EP0019615A1

EP0019615A1 - Method of producing lining material or filling material for wadded articles.

Info

Publication number: EP0019615A1
Application number: EP78900010A
Authority: EP
Inventors: Robert Bolliand
Original assignee: Rhone Poulenc Textile SA
Current assignee: Rhone Poulenc Textile SA
Priority date: 1977-06-08
Filing date: 1978-12-28
Publication date: 1980-12-10
Also published as: NL7806091A; FI781812A; WO1978000012A1; BE867922A; DE2856902A1; ES470615A1; IT7824346A0; US4259400A; GB2021162A; IT1096511B; EP0019615B1; NO781989L; CA1108835A; GB2021162B; BR7808658A; DK252878A

Abstract

Materiau fibreux de garnissage imitant le duvet naturel pour articles ouatines. Le materiau se presente sous la forme d'un element de longueur definie, de faible epaisseur par rapport a sa largeur, comportant une ame centrale filiforme (1) relativement dense et rigide par rapport a l'ensemble du materiau, ame a laquelle sont liees des fibres (2) orientes sensiblement transversalement par rapport a celle-ci, lesdites fibres etant enchevetrees les unes aux autres de maniere a former un voile homogene et etant disposees de part et d'autre de l'ame sensiblement dans un meme plan. Procede pour la fabrication du materiau dans lequel on forme une nappe fibreuse (4) de maniere connue, on superpose une pluralite de fils espaces thermocollants (6) sur au moins une des faces de ladite nappe, on provoque la liaison des fils espaces avec la nappe fibreuse, on divise la nappe en bandes (10) de part et d'autre de chaque fil et enfin on decoupe lesdites bandes ainsi formees en elements de longueur determinee (12). La division de la nappe en bandes s'effectue de preference par passage des fils dans des oeillets apres leur association a la nappe fibreuse. On peut aussi proceder a la division par decoupe.Fibrous filling material imitating natural down for fleece articles. The material is in the form of an element of defined length, of small thickness compared to its width, comprising a threadlike central core (1) relatively dense and rigid compared to the whole of the material, to which soul are linked fibers (2) oriented substantially transversely relative thereto, said fibers being intermeshed with one another so as to form a homogeneous veil and being arranged on either side of the core substantially in the same plane. Method for the manufacture of the material in which a fibrous sheet (4) is formed in a known manner, a plurality of thermobonding space yarns (6) are superimposed on at least one of the faces of said ply, the spaces son is bonded with the fibrous sheet, the sheet is divided into strips (10) on either side of each wire and finally said strips thus formed are cut into elements of determined length (12). The sheet is divided into strips preferably by passing the threads through eyelets after their association with the fibrous sheet. You can also proceed to division by cutting.

Description

FIBROUS LINING MATERIAL AND METHOD FOR OBTAINING SAME

The present invention relates to a new lining or filling material which can be used in particular for the production of padded or quilted articles, such as bedding articles and various garments such as bathrobes, anoraks, padded coats, etc.

Quilted or quilted articles have been known for a long time and consist essentially of an external envelope, generally based on fabric or knitting which traps an internal layer consisting of feathers and / or various natural or chemical fibers in the form of tablecloths.

In general, it is requested that the filling materials allow obtaining a bulky structure, of a low weight, having a high insulating power, a satisfactory air permeability, as well as an excellent elasticity allowing the together to regain its size when the article is subjected to loads and successive discharges.

These requirements are difficult to fulfill simultaneously and, in general, the filling materials are chosen according to the articles produced. This is moreover well shown by the article published in the review "Textiles Chimiques" from July / August 1969, pages 373 to 379.

Traditionally, quilted products were made in the past from natural materials such as cotton, wool, kapok, and feathers. In recent years, it has been proposed to replace natural fibers with chemical materials such as polyester fibers or the like. It has also been proposed to produce filling plies directly at starting from cables of chemical son, by spreading of the filaments constituting these cables and treatment with a view to giving them bulk and cohesion.

However, in the case of articles for which a large volume is required, a weight as low as possible, a great power of thermal insulation and air permeability, it must be recognized that to date, only the feathers natural give good results. It is obvious that this material is available in limited quantity, which, consequently, leads to expensive articles. It has certainly been proposed to mix natural feathers with a certain proportion of chemical fibers to reduce costs and increase the amount of material available, but it must be recognized that these solutions do not give good results because, on the one hand, these blends are difficult to produce and, on the other hand, the characteristics of the products obtained are not comparable to those communicated using only natural feather.

However, we have found, and this is what is the subject of the present invention, a new type of filling material, economical, sus¬ ceptible to be manufactured in unlimited quantity, which overcomes these disadvantages and allows to make articles whose properties are comparable to those made from natural feathers.

The new filling material according to the invention is based on fibrous material, and it is characterized in that it is in the form of an element of defined length, of small thickness compared to its width and its length. , consisting of a thread-like central core or edge, relatively dense and rigid in relation to the whole of the material, to which fibers orien¬ tees are attached substantially transversely to the core, entangled with one another, of so as to form a homogeneous veil, said fibers being arranged on either side of the core.

This filling material imitating the natural feather, can schematically be considered as constituted by a flexible filiform textile rod, on either side of which are distributed and to which adhere textile fibers forming barbs. The invention also relates to a method for producing such products. The method according to the invention consists, schematically, of forming in a known manner a fibrous sheet made up of fibers en¬ overlapped with one another, for example a cardboard or si¬ milary sheet, and is characterized in that one superimposed on the sheet thus formed and on at least one face thereof a plurality of spaced son based on a heat-bonding material, then provoking the connection of said spaced son with the sheet, which one then divides the sheet into strips on either side of the spaced wires, and finally cutting said strips to a determined length. Advantageously, the connection of the spaced wires with the sheet is obtained under the combined action of heat and pressure, for example by passing between two heating cylinders.

The sheet is divided into strips by any suitable means; generally using a cutting means disposed on either side of the son. However, it may happen that, depending on the weight of the fibrous sheet, fibers of said sheet do not stick to the threads and then disturb the proper functioning of the process after cutting into strips. Also, another means of separation is proposed, characterized in that, after bonding by heat / pressure of the spaced yarns on the fibrous web, the division into strips of the sheet obtained on either side of each yarn, is carried out naturally ¬ Lement by tearing passing each of these in an eyelet, the fibers passing through the eyelet through which passes the wire to which they adhere most securely. The use of a single ply of threads superimposed on the fibrous ply is generally well suited for weights of the latter of up to 50 grams per square meter; beyond, the number of stuck fibers decreases and it is then proposed to place the fibrous web between two plies of spaced yarns, these two plies being offset one relative to the other by half a space; practically, all the fibers are then bonded to one or the other layer of wires under the influence of the heat associated with the pressure, the separation into strips being carried out either by cutting between each wire, or naturally by passing the wires in carnations which also serve as purifiers. These eyelets can have any shape, oval or round; it is important, however, that their diameter is preferably less than the space separating two wires. These eyelets are generally mounted on heddles, themselves held by a frame as they appear to hold the warp threads on a loom. Avantageuse¬ ment, the core is constituted by a wire based on fusible material, or which has been made fusible by coating.

The textiles used are artificial and / or synthetic. The textile of the rod is either a monofilament or a multifilament, a double thread or sheathed with another thread; it may have a core / sheath structure, the latter being made of a polymer with a low melting point. It is also possible to deposit on the surface by coating or sheathing of the wire, a hot-melt type hot-melt product. Preferably, this wire is formed by the assembly of two wires having different bonding points, for example one being based on an interpolyamide whose bonding point is close to 120 to 140 ° C, and the other based on polyamide 6-6. The wire of the rod can possibly be crimped or wavy.

The fibrous material linked to the central core constituted by the above-mentioned thread is advantageously constituted by chemical fibers, such as polyester fibers, natural fibers, or artificial fibers, used alone or in the form of mixtures, of the same title or of different title, of the same section or of different sections, of the same cut or of different cut.

In order to avoid as much as possible the formation of lumps or bundles of fibers in the made-up textile articles containing the padding material which is the subject of the first application, preferably used for the formation of the veil of fibers having at most 5 ripples to the centimeter.

If fibers are used which have undergone the silicone elaser type treatment, there may be difficulties in bonding the fusible wires; in this case, the latter, prior to their deposition on the fibrous web, continuously or discontinuously with this operation, are coated with silicone material and preferably dried around 180 ° C. The application at the time of the implementation of the heat and pressure process, either by plate or on a calender, will then allow the bonding of the wires and silicone fibers. The padding materials which are the subject of the present application may be of the same dimension or of different dimensions. It is thus that they can be of different length. They can also be of different widths; this is achieved by not spacing the wires regularly or by spacing them regularly but at spaces of different sizes. This gives a varied padding material, the mixture of products of different sizes can only provide more comfort.

It is possible, before separating the product into strips, to practice its coloring, for example by printing / transfer.

After gluing and before separation, if it is a question of separation by passing through the eyelets, a light brushing can be carried out to ruffle the fibers and take away the unwanted superfluous fibers which are deposited on a cleaning roller of the known type in spinning. In the case of cutting by cutting, the brushing / cleaning operation can take place after cutting into strips before cutting into elements of defined length.

The invention and the advantages which it brings will however be better understood thanks to the example of embodiment given below and illustrated by the appended diagrams in which:

- Figures 1 and 2 illustrate schematically in side view and in top view, a device for the production of the product according to the invention.

- Figures 3 and 4 show respectively, in top view and in side view, the new packing material according to the invention.

- Figure 5 schematically illustrates in perspective such a material.

As can be seen in Figures 3, 4 and 5, the new packing material according to the invention is in the form of an element of defined length, of small thickness compared to its length, consisting essentially by a threadlike central core 1, relatively dense and rigid with respect to the whole of the material, to which are bonded fibers 2 oriented substantially transversely to this core 1, said fibers being entangled one to others and forming a homogeneous veil. These fibers 2 are arranged on either side of the core 1.

Optionally, in order to accentuate the resemblance to a natural feather, it is possible, as shown in Figure 5, to taper the end of the material.

Obtaining such a material is obtained in a simple manner as illustrated in FIGS. 1 and 2. A fibrous sheet 4 is produced in a bare manner, for example by means of a card, of a device. pneumatic Curlator type, or equivalent. A plurality of spaced apart fusible wires 6, superimposed for example from individual coils 5, are superimposed on this sheet 4. The wires 6 are regularly spaced on said sheet 4. By passing between heated rollers 7-8, causes the connection to the surface of the ply 4. This li¬ aison is obtained thanks to the heating rollers 7-8. Advantageously, these rollers exert a pressure which promotes the connection of the two constituents. Continuously, by means of knives 9 arranged on either side of wires 6, the assembly is cut to form strips 10, then said strips are cut, for example by means of knives 11 so as to obtain elements 12 of determined length which is recovered in a storage member 13.

The use of the padding material which is the subject of the present application is carried out on the same materials as those used for natural feathers.

The padding material which is the subject of the present application is used for padding, the wadding of bedding articles (pillows, bolsters, eiderdowns, bedspreads, bedspreads, etc.), of upholstery , furniture, clothing manufacturing, decoration, headgear and for thermal and sound insulation.

The following examples illustrate the present application without limiting it. Example 1

From polyethylene terephthalate fibers, 3.3 dtex, 45 mm in size, with 3 undulations per centimeter, a sheet of weight 50 g / square meter is produced. A layer of threads formed for each is superimposed on said fibrous sheet thus formed. a polyethylene terephthalate monofilament 24/100 mm in diameter, twisted to 100 turns per meter, with a polyethylene monofilament; the wires are spaced in the web 20 mm from each other. The calendering at 180 ° C. of the fibrous web / web of yarns causes the polyethylene to melt and adhere to the yarns of the fibers of the web. The strips are formed by passing each wire through a round eyelet with a diameter of 15 mm, the fibers passing through the eye through which passes the wire with which they adhere best. The running speed of the assembly is 6 meters / minute; the strips thus produced have an average width of 15 to 20 mm. These strips are then cut transversely by means of knives into elements of length 10 centimeters, and collected in a container. Example 2 On a pneumatic device of the Curlator type, a fibrous sheet of fifty grams per square meter (50 g / m), 1.50 meters wide, is produced from polyester fibers of 3.3 dtex, cut 40 mm 4 undulations per centimeter. The sheet thus formed is wound in the form of a roll 3. The sheet 4 thus formed is superimposed on threads produced on the basis of fusible material and constituted by the assembly of a thread based on an interpolyamide, for example based on polyamide 66/6, polyamide 66/10, whose bonding point is between 120 and 140 ° C and a polyamide 6-6 yarn. These two wires are assembled at 60 turns / meter and the total titer of the assembled wire is 600 dtex. The wires 6 are spaced 15 mm from each other. By passing between two heating cylinders 7-8 brought to a temperature of 140 ° C., the upper cylinder exerting a pressure of 10 kilos per square centimeter, the bonding of the wires 6 is caused on the web 4. The speed of movement of the set is 5 m / minute. After securing the wires 6 on the sheet 4, the assembly thus formed is cut by means of knives 9 arranged on either side of the wires 6. In this way, strips 10 having a width of 15 mm are produced. and having in their central part a continuous wire 6. These strips are then cut by means of knives 11 into elements of defined length. The article thus obtained therefore comprises a relatively dense and rigid central core or edge 1 which has fibers 2 linked to it which form a homogeneous veil and which are oriented substantially relative to this transverse core. Such an article is particularly suitable for filling materials to replace natural feathers. It makes it possible to communicate to articles produced properties comparable to previous articles produced from natural feathers, in particular with regard to the volume and the power of insulation. It is economical to make, easy to store. In addition, it has the advantage of being able to be used as it is on conventional equipment making it possible to make filling articles using natural feathers.

It is obvious that this article can also be used in the form of a sheet after transformation on suitable equipment and in particular pneumatic equipment of the Rando type.

Claims

1. New lining material for wadded articles, based on fibrous material, characterized in that it is in the form of an element of defined length, of small thickness compared to its width, comprising a core relatively dense and rigid filiform unit with respect to the whole of the material, core to which fibers oriented substantially transversely relative to it are linked, said fibers being entangled with one another so as to form a homogeneous veil, and being arranged on either side of the core substantially in the same plane.

2. Material according to claim 1, characterized in that the core is made from a fusible wire.

3. Material according to claims 1 and 2, characterized in that the thermobonding wire is a thermobonding wire by nature.

4. Material according to claims 1 and 2, characterized in that the fusible wire is an ordinary wire associated with a thermo¬ sticky wire.

5. Material according to claims 1 and 2, characterized in that the fusible wire is coated with siliconized material.

6. Material according to claim 1, characterized in that the fibers linked to the core have less than 5 undulations per centi¬ meter.

7. Material according to claims 1 and 6, characterized in that the fibers linked to the core are silicone.

8. Method for obtaining a filling material according to one of claims 1 to 7, characterized in that a fibrous sheet is formed in a known manner, that a plurality of spaced thermobonded wires are superimposed on at least one of the faces of said ply, that causes the spaced wires to bond with the fibrous ply, that the ply is divided into strips on either side of each wire, and, finally, that said strips thus formed are cut into elements of determined length.

9. A method for obtaining a filling material according to claim 8, characterized in that the division of the sheet into strips on each side of each wire is made by cutting.

10. A method for obtaining a filling material according to claim 9, characterized in that the division of the sheet into strips on each side of each wire is carried out naturally by arra¬ chement of fibers by passage of each wire after bonding with the fibrous nap¬ pe in an eyelet, the fibers passing through the eyelet in which the wire passes to which they adhere most firmly.

11. A method for obtaining a lining material for wadded articles according to claim 8, characterized in that the fibrous web is taken between two plies of spaced thermocol¬ lants son, these two plies being offset one with respect to the other by half a space.

12. Method according to claim 8, characterized in that the connection of the spaced son with the fiber_rεe sheet is obtained by the combined action of heat and pressure.

13. Upholstered textile articles, characterized in that they contain at least in part filling materials obtained according to the process which is the subject of claims 8 to 12.