Magnetic textile filament made from recycled or non-recycled neodymium powder and the design of a textile article comprising such a filament

Abstract

The subject of the present invention relates to a method for manufacturing a textile filament for producing a textile article comprising at least one magnetized zone ensuring assembly of a ferromagnetic element with said textile article, said method comprising the following steps: supplying into a hopper a thermoplastic resin comprising a polymer mixture loaded with a powder of demagnetized particles, said resin being in the form of granules; extruding said thermoplastic resin by an extruder to obtain a viscous mass; melt spinning said viscous mass to obtain a winding of a textile filament, and magnetizing said textile filament.

Description

Title of the invention: Magnetic textile filament made from recycled or non-recycled neodymium powder and the design of a textile article comprising such a filament Technical field

[0001] The present invention relates to the field of textiles.

[0002] The subject of the present invention relates more particularly to a method for manufacturing a magnetic textile filament from recycled or non-recycled neodymium powder and the design of a textile article comprising such a filament.

[0003] One of the objectives of the present invention is to enable the assembly of a ferromagnetic object with a textile article comprising such a magnetic textile filament or even the assembly of two textile articles each comprising such a filament.

[0004] The present invention will find advantageous applications in particular in the field of sport, and more particularly athletics for example by facilitating the attachment of a bib to a T-shirt during a race.

[0005] Obviously, other applications can be envisaged, for example in the field of fashion, by allowing for example the personalization of a textile article or by providing a system for closing or assembling any textile part for clothing. Prior art

[0006] In the field of closure and assembly systems for textile articles, buttons, snap fasteners, zippers, the Velcro® system and safety pins are known.

[0007] It should be noted here that closing and assembly systems such as buttons, snap fasteners, zippers or Velcro® systems can be difficult to operate for people with disabilities or those with loss of autonomy such as osteoarthritis.

[0008] For running or athletics, safety pins are the most commonly used to attach a bib to a T-shirt.

[0009] Every athlete or runner has already faced the problems of these pins: forgetting the pins before the race (stress), losing pins, fear of injury, loss of time (on average 1 minute and 30 seconds to fix a bib), lack of pins (it is better to have four), bad positioning of the bib, deterioration of the T-shirt fabric by perforation, etc.

[0010] Finally, the Applicant points out that the pins are not recycled and that the time taken to remove the bib does not encourage doing so once the finish line has been crossed.

[0011] The Applicant unfortunately submits that there is currently no device easy to assemble and remove, in a single movement, an element such as for example a bib with a textile item such as for example a T-shirt.

[0012] The Applicant further submits that existing systems are highly noticeable and most often unsightly.

[0013] The Applicant further submits that the personalization solutions are single-use (a sublimated or printed textile).

[0014] A magnetic device is known that is configured to close a blouse, for example. However, such a device is very noticeable; it is sewn directly into the textile article and is not very recyclable.

[0015] Document WO01 / 53575 discloses a magnetic textile part solution.

[0016] Such a textile piece according to document WO01 / 53575 is made using a thread composite textile formed from a combination of textile fibers and temporarily magnetized fibers.

[0017] In document WO01 / 53575, this textile piece serves as a marker and can be used as a detection element incorporated in a commercial article, in a label, a sticker or even product packaging.

[0018] The Applicant submits that this solution remains complex to implement; it is expensive and therefore of little interest from an industrial perspective.

[0019] The Applicant therefore submits here that the solutions of the prior art known up to now are unsatisfactory and the magnetized textile solutions do not allow large-scale deployment. Summary of the invention

[0020] The present invention aims to improve the situation described above.

[0021] The present invention aims more particularly to remedy the various inconveniences advantages mentioned above by proposing a simple solution for manufacturing a magnetic textile filament from neodymium powder, preferably recycled.

[0022] To this end, the subject of the present invention relates, according to a first aspect, to a method of manufacturing a textile filament for producing a textile article comprising at least one magnetized zone ensuring assembly of a ferromagnetic element with said textile article.

[0023] According to the present invention, the method comprising the following steps:

[0024] - a supply in a hopper of a thermoplastic resin comprising a polymer mixture loaded with a powder of demagnetized particles, said resin being in the form of granules; - an extrusion of said thermoplastic resin by an extruder to obtain a viscous mass; - melt spinning of said viscous mass to obtain a winding of a textile filament,

[0025] - a magnetization of said textile filament.

[0026] According to other optional characteristics of the immersive system according to the invention, taken alone or in combination:

[0027] - the thermoplastic resin comprises a polymer of the PET polyester type or of the type polyamide PA;

[0028] - the demagnetized particle powder comprises neodymium particles and / or iron nitride particles of the type SmFeN for example;

[0029] - the particles of the powder have a diameter of a few nanometers and one hundred microns;

[0030] - the magnetization of said textile filament is carried out continuously or discontinuously to form said at least one magnetized zone;

[0031] - the thermoplastic resin comprises between 10 and 60% of dema particle powder gnetized, preferably between 20 and 50%;

[0032] - the spinning is carried out in such a way that the filament has a count between 1.3 and 250 dtex.

[0033] The subject of the invention relates, according to a second aspect, to a textile filament obtained by a manufacturing method as described above.

[0034] The subject of the invention relates, according to a third aspect, to a textile article made from at least one textile filament as described above.

[0035] The subject of the invention relates, according to a fourth aspect, to a use of a textile article as described above in which the magnetized textile filament is implemented on a front zone of said article to allow assembly of a bib comprising ferromagnetic means with said textile article.

[0036] The subject of the invention relates, according to a fifth aspect, to an installation comprising means configured for implementing the different steps of the method.

[0037] By the various technical characteristics above, the present invention makes it possible to obtain a textile article made from an innovative textile filament capable of defining an assembly zone by magnetization.

[0038] Description of the attached figures

[0039] Other characteristics and advantages of the present invention will emerge from the description below, with reference to the appended figures 1 to 3 which illustrate an exemplary embodiment thereof without any limiting character and in which:

[0040] Figures [Fig. 1] [Fig.3] and [Fig.2] each represent a schematic view of the system and method according to an exemplary embodiment of the present invention.

[0041] It should be noted that this detailed description relates to an example of a rea particular use of the present invention, but that in no case does this description have any limiting character to the subject of the invention; on the contrary, its objective is to remove any possible imprecision or any misinterpretation of the claims which follow.

[0042] It should also be noted that the reference signs placed in parentheses in

[0043] the following claims are in no way limiting in nature; these signs have the sole purpose of improving the intelligibility and understanding of the following claims as well as the scope of the protection sought.

Claims

Claims

1. Method for manufacturing a textile filament for producing a textile article comprising at least one magnetized zone ensuring assembly of a ferromagnetic element with said textile article, said method comprising the following steps: supplying in a hopper a thermoplastic resin comprising a polymer mixture loaded with a powder of demagnetized particles, said resin being in the form of granules; extruding said thermoplastic resin by an extruder to obtain a viscous mass; melt spinning of said viscous mass to obtain a winding of a textile filament, magnetizing said textile filament.

2. The method of claim 1, wherein the thermoplastic resin comprises a polymer of the polyester PET type or of the polyamide PA type.

3. A method according to claim 1 or 2, wherein the demagnetized particle powder comprises neodymium particles and / or iron nitride particles of the type for example SmFeN.

4. A method according to any one of the preceding claims, wherein said particles of the powder have a diameter of a few nanometers and one hundred microns.

5. A method according to any one of the preceding claims, wherein the magnetization of said textile filament is carried out continuously or discontinuously.

6. A method according to any preceding claim, wherein the thermoplastic resin comprises between 10 and 60% of demagnetized particle powder, preferably between 20 and 50%.

7. A method according to any preceding claim, wherein the spinning is carried out in such a way that the filament has a count of between 1.3 and 250 dtex.

8. Installation comprising means configured for implementing the different steps of the method according to any one of claims 1 to 7.

9. Textile filament obtained by a manufacturing process according to any one of claims 1 to 7.

10. Textile article made from at least one textile filament according to the re- claim 9.

11. Use of a textile article according to claim 10 in which the magnetized textile filament is implemented on a front area of ​​said article to allow assembly of a bib comprising ferromagnetic means with said textile article.

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