WO2022106332A1

WO2022106332A1 - Method for manufacturing an item of clothing with changeable thermal property

Info

Publication number: WO2022106332A1
Application number: PCT/EP2021/081633
Authority: WO
Inventors: Vincent Ventenat
Original assignee: Decathlon
Priority date: 2020-11-19
Filing date: 2021-11-15
Publication date: 2022-05-27
Also published as: FR3116185B1; CN116528714A; FR3116185A1; EP4247200A1

Abstract

The invention relates to a method for manufacturing an item of clothing with changeable thermal property, the method providing for: producing a tubular textile sleeve comprising a main portion and an adjacent complementary portion; attaching an airtight membrane on the outer walls of the portions; hitching up the complementary portion on the mean portion by placing their outer walls opposite one another in order to form a section (1) covering a part of the body comprising the main portion as inner layer and the complementary portion as outer layer (4), at least a part of the respective membranes of the portions being arranged facing one another between the layers; partially welding the membrane parts on top of one another in order to form between them a thermally insulating network (5) comprising at least one sausage-shaped airbag which extends between the layers of the section (1); producing the item of clothing comprising the section (1).

Description

DESCRIPTION

Title: Process for the manufacture of an article of clothing with evolving thermal properties

The invention relates to a method of manufacturing an article of clothing with changing thermal properties, as well as an article of clothing manufactured by implementing such a method.

It applies in particular to an article of clothing intended to be worn on the torso during the practice of a sporting activity, such as for example an undershirt, in order to contribute to the regulation of temperature and/or perspiration. of the user during different stages of said sports activity.

We know from document US-2016/0366963 an undershirt comprising a central section covering the torso and two lateral sections covering respectively an arm of the user, said shirt comprising beads of air located in particular at the level of the bust. , shoulder blades and back.

In particular, the garment may be formed from a seamless knit, having an outer panel and an inner panel which are superposed and then sealed together by means of an adhesive and/or by sewing to form the air tubes.

Also known from document EP-0 924 999 is a thermal insulation module that can be integrated into a garment such as a jersey or a jacket, said module being equipped with air tubes that can be inflated by the user, in particular by blowing into an inflation valve that can be inserted into a mouthpiece placed on said module, in order to allow said user to adapt the layout of said module, and therefore the regulation of his temperature and/or his perspiration, according to the intensity of the physical effort he provides. In particular, this module can be made by sealing together two internal and external membranes at certain places to form inflatable air tubes, or by folding a single sheet of membrane which is sealed on itself to form a peripheral seal. and several air tubes. Furthermore, for the assembly of the module to a garment, one of the membrane walls can be laminated to a fabric, the face devoid of membrane of said fabric then forming the outer surface of said garment.

The invention aims to improve the prior art by proposing a method for simply manufacturing an article of clothing integrating a thermal insulation network, in particular by being able to confer scalable properties for the comfort of the user.

To this end, according to a first aspect, the invention proposes a method of manufacturing an article of clothing with evolving thermal properties, said article comprising at least one section for covering a part of the body of a user, said method providing of :

- Making a tubular textile sleeve comprising a main portion of geometry similar to the geometry of the cover section and a complementary portion adjacent to said main portion, each of said portions having an outer wall;

- combine a membrane on the outer wall of the main portion and a membrane on the outer wall of the complementary portion, said membranes being airtight and weldable together;

- roll up the complementary portion on the main portion by placing their external walls facing each other to form a covering section comprising the main portion as the internal layer and the complementary portion as the external layer, at least part of the respective membranes of the said portions being arranged opposite between said layers;

- Partially welding the membrane parts to one another to form between them a thermal insulation network comprising at least one air bead which extends between the layers of the covering section; - making the article of clothing comprising the covering section thus obtained.

According to a second aspect, the invention proposes an article of clothing manufactured by implementing such a method, said article comprising at least one section for covering a part of the body of a user, said section comprising an internal textile layer and an outer textile layer between which extends a thermal insulation network comprising at least one air bead formed by welding membrane parts associated respectively with one of said layers.

Other particularities and advantages of the invention will appear in the following description, made with reference to the appended figures, in which: [Fig.1 a],

[Fig.1b] and

[Fig .1 c] schematically represent in longitudinal section different steps of a method of manufacturing an item of clothing according to one embodiment of the invention;

[Fig.2] schematically shows in longitudinal section the arrangement of an air bead between the layers of an article of clothing according to one embodiment of the invention;

[Fig.3a],

[Fig.3b] and

[Fig.3c] schematically represent an example of an article of clothing produced by the method of the preceding figures, respectively in front view (figure 3a), in side view (figure 3b) and in back view (figure 3c).

In relation to these figures, a method for manufacturing an article of clothing with changing thermal properties is described below, as well as an article of clothing manufactured by implementing such a method.

The article of clothing includes at least one section covering a part of the user's body. In FIGS. 3a, 3b and 3c, the item of clothing is an undershirt intended to cover the upper part of the body of the user, in particular during the practice of a sports activity, and comprises a central section 1 covering the torso and two lateral sections 2 covering respectively one arm of said user.

In the embodiment shown, the torso covering section 1 comprises an inner textile layer 3 and an outer textile layer 4 between which extends a thermal insulation network 5 comprising at least one air bead 6, said bead of air being formed by welding membrane parts 7a, 7b respectively associated with one of said layers.

In the figures, the article of clothing comprises air tubes 6 which extend over the top of the bust and over each of the shoulder blades, insofar as these areas of the body are more sensitive to the cold, and therefore require greater thermal insulation than the rest of the torso.

In particular, the article of clothing represented comprises a single thermal insulation network 5 which has a front section 5a and two rear sections 5b respectively covering the bust and the shoulder blades, the front section 5a being in fluid communication with each rear section 5b at the means of respectively a row 5c of air tubes 6, each of said rows extending respectively over a covering portion of a clavicle.

As a variant, the thermal insulation network 5 can extend over other parts of the torso, for example over the lower covering part of the back and/or over the covering part of the abdomen, which are more prone to sweating during the practice of a sporting activity. The article of clothing can also comprise other networks 5 formed on the sections 2 covering the arms, for example on the covering portions of the top of the shoulders.

To form an undershirt, the textile layers 3, 4 may together have a surface weight of less than 300 g/m ² . Furthermore, the sections 1, 2 covering the torso and the arms each have an elasticity adapted to allow the suit to be pressed against the user's body, and thus provide a “second skin” effect to said user.

Advantageously, the textile layers 3, 4 are made together by seamless knitting, which makes it possible to form the covering section 1 in a single piece, and therefore to facilitate its manufacture, but also to easily obtain an article clothing with appropriate elasticity.

In relation to FIGS. 1a, 1b and 1c, a method for manufacturing an article of clothing with changing thermal properties will now be described, said article comprising at least one section 1 for covering a part of the body such as previously described.

To obtain such a covering section 1, the method first provides for making a tubular textile sleeve 8 comprising a main portion 8a of geometry similar to the geometry of the covering section 1, as well as a complementary portion 8b adjacent to said main portion, each of said portions having an outer wall 9a, 9b (FIG. 1a).

Advantageously, the main 8a and complementary 8b portions of the sleeve 8 have a similar geometry, which makes it possible to facilitate the manufacture of the covering section 1, and therefore of the article of clothing as a whole.

As mentioned above, the textile sleeve 8 can be made by seamless knitting, in particular by means of a circular knitting machine, which allows it to be produced in a single piece.

The method then provides for associating a membrane 7a on the outer wall 9a of the main portion 8a and a membrane 7b on the outer wall 9b of the complementary portion 8b, said membranes being airtight and weldable together (figure 1 b). The membranes 7a, 7b can in particular be cut according to the desired shape and/or dimensions from a film of suitable material, then laminated to the respective outer walls 9a, 9b of the main 8a and complementary 8b portions. Alternatively, the membranes 7a, 7b can be formed directly on the outer walls 9a, 9b, for example by coating or by extrusion of a suitable product on the desired areas of said outer walls.

The method then provides for rolling up the complementary portion 8b on the main portion 8a, by placing their external walls 9a, 9b facing each other, to form a covering section 1 comprising the main portion 8a as an internal layer 3 and the complementary portion 8b as an internal layer. external 4, at least a part of the respective membranes 7a, 7b of said portions being arranged opposite between said layers (FIG. 1c).

In particular, when the covering section 1 is intended to be worn around the torso, the portions 8a, 8b can be rolled up along a fold line 10 intended to form the upper collar 11 or the lower hem 12 of the article. clothing.

To finalize the manufacture of the cover section 1, the method then provides for partially welding the membrane parts 7a, 7b to each other to form between them a thermal insulation network 5 comprising at least one bead of air 6 which extends between the layers 3, 4 of said covering section.

In relation to FIGS. 1b and 1c, the method provides for placing a membrane 7a, 7b on each of the external walls 9a, 9b. According to a variant not shown, the same membrane 7a, 7b can be associated on the main 8a and complementary 8b portions of the sleeve 8.

According to one embodiment, at least two membranes 7a, 7b are associated on each of the external walls 9a, 9b, their respective welding making it possible to locate at least two thermal insulation networks 5 between the layers 3, 4 of the cover section 1.

In relation to FIG. 2, at least one portion 8a, 8b of the sleeve 8 can be made with two zones 13a, 13b having a differentiated textile density, in particular according to the thermal sensitivity of the part of the body covered by said zone.

Thus, the sleeve 8 may have a zone 13a with a high textile density, which is intended to be arranged facing the parts of the body most sensitive to cold, in particular the bust and the shoulder blades, in order to provide a greater heat supply. in these parts.

Similarly, the sleeve 8 may have a zone 13b with a lower textile density, in particular perforated, which is intended to be arranged opposite the parts of the body most prone to sweating, in particular the lower back or the abdomen, in order to to facilitate ventilation and the evacuation of perspiration in these parts.

In particular, a membrane 7a, 7b can be associated on the outer wall 9a, 9b of at least one of the zones 13a, 13b, in order to confer a differentiated compression of the thermal insulation network 5 obtained according to its positioning on the cover section 1 .

For example, air tubes 6 can extend:

- on zone 13a of high textile density, in order to improve the thermal insulation at the level of the parts of the body most sensitive to the cold; and or

- On the zone 13b of low textile density, in order to keep the fabric soaked with perspiration away from the skin of the user, and thus to prevent said user from getting cold while facilitating the evaporation of said perspiration. The method provides in particular for welding the membrane parts 7a, 7b together along weld lines 14 delimiting between them at least one air bead 6.

In particular, the parts of membranes 7a, 7b can be welded together to form at least one air bead 6 of variable internal dimension depending on its position on the cover section 1, in order to confer insulation and/or differentiated spacing layers 3, 4.

In FIGS. 3a, 3b and 3c, the network 5 comprises a front section 5a and two rear sections 5b which each have air tubes 6 of substantially constant cross section arranged in a nested manner, the tubes 6 of a section 5a, 5b having an increasing length from the inside out.

Furthermore, the air tubes 6 of each section 5a, 5b communicate with each other by interruptions 15 formed in the weld lines 14 of the membranes 7a, 7b, and the outside air tube 6a of the front section 5a communicates with the air tubes 6b of the rear sections 5b via side tubes 6c extending in rows 5c over the covering portions of the clavicles.

In a variant not shown, the method can provide for welding the membrane parts 7a, 7b together to form a thermal insulation network 5 comprising a single bead of air, for example rolled up on itself.

The welding of the membrane parts 7a, 7b can in particular be carried out through the inner 3 and outer 4 layers of the covering section 1, with a device suitable for carrying out said welding without damaging the textile forming said layers.

Advantageously, the method provides for equipping the thermal insulation network 5 with a valve 16 for inflating/deflating an air tube 6, said valve being associated with said network through the outer layer 4 of the covering section 1, in order to allow the user to access it at any time when wearing the article of clothing, in particular during the practice of an activity athletic.

Thus, the user can, for example by means of a mouthpiece connected to the valve 16, arrange the inflation of the thermal insulation network 5 according to his needs, which evolve in particular during the sporting activity.

For example, the user can:

- before exercise, inflate the air tubes 6 to create a space for air circulation between your skin and the article of clothing, in order to insulate your body from the cold and provide warmth;

- during exercise, deflate said tubes to bring said article into contact with your skin, in order to limit the heat input and allow the absorption of sweat by the textile; and

- after the effort, re-inflate the said tubes to again move the said article away from his skin, in order to avoid a rapid cooling of his body and an unpleasant contact of the said skin with the textile soaked in sweat.

After obtaining the covering section 1, the method provides for making the article of clothing, in particular by associating by seams 17 said section with other sections 2 covering other parts of the body.

Thus, in the embodiment shown, the obtained torso covering section 1 is sewn to two arm covering sections 2 to form the undershirt.

In particular, the method may provide for producing several sections 1, 2 covering different parts of the body according to the steps described above, then for associating all these sections 1, 2 by stitching 17 to form a clothing article comprising several networks of thermal insulation 5 in different places.

Claims

1. Method for manufacturing an article of clothing with changing thermal properties, said article comprising at least one section (1) for covering a part of the body of a user, said method providing for:

- making a tubular textile sleeve (8) comprising a main portion (8a) of geometry similar to the geometry of the section (1) covering and a complementary portion (8b) adjacent to said main portion, each of said portions having an outer wall (9a, 9b);

- associating a membrane (7a) on the outer wall (9a) of the main portion (8a) and a membrane (7b) on the outer wall (9b) of the complementary portion (8b), said membranes being airtight and weldable together;

- roll up the complementary portion (8b) on the main portion (8a) by placing their outer walls (9a, 9b) facing each other to form a covering section (1) comprising the main portion (8a) as an inner layer (3) and the complementary portion (8b) as outer layer (4), at least a part of the respective membranes (7a, 7b) of said portions being arranged opposite between said layers;

- partially welding the membrane parts (7a, 7b) to each other to form between them a thermal insulation network (5) comprising at least one air bead (6) which extends between the layers (3, 4) of the section (1) covering;

- making the article of clothing comprising the covering section (1) thus obtained.

2. Manufacturing process according to claim 1, characterized in that the textile sleeve (8) is made by seamless knitting, in particular by means of a circular knitting machine.

3. Manufacturing process according to one of claims 1 or 2, characterized in that the main portions (8a) and complementary (8b) of the sleeve (8) have a similar geometry.

4. Manufacturing process according to any one of claims 1 to 3, characterized in that the membranes (7a, 7b) are laminated to the outer walls (9a, 9b) of the respective main (8a) and complementary (8b) portions. .

5. Manufacturing process according to any one of claims 1 to 4, characterized in that it provides for welding the membrane parts (7a, 7b) together along weld lines (14) delimiting between them at least one air tube (6).

6. Manufacturing process according to any one of claims 1 to 5, characterized in that it provides for welding the membrane parts (7a, 7b) together to form at least one air bead (6) of dimension internal variable depending on its position on the section (1) covering.

7. Manufacturing process according to any one of claims 1 to 6, characterized in that it provides for welding the membrane parts (7a, 7b) together to form a thermal insulation network (5) comprising a single air tube (6).

8. Manufacturing process according to any one of claims 1 to 7, characterized in that it provides for equipping the thermal insulation network (5) with a valve (16) for inflating / deflating a tube air (6), said valve being associated with said network through the outer layer (4) of the section (1) covering.

9. Manufacturing process according to any one of claims 1 to 8, characterized in that it provides for arranging at least two membranes (7a, 7b) on each of the outer walls (9a, 9b), their respective welding allowing locate at least two thermal insulation networks (5) between the layers (3, 4) of the section (1) covering.

10. Manufacturing process according to any one of claims 1 to 9, characterized in that it provides for making at least one portion (8a, 8b) of the sleeve (8) with two zones (13a, 13b) having a density differentiated textile, a membrane (7a, 7b) being associated on the external wall (9a, 9b) of at least one of said zones to confer a differentiated compression of the thermal insulation network (5) obtained according to its positioning on the section (1) recovery.

11 . Article of clothing manufactured by implementing a method according to any one of claims 1 to 10, said article comprising at least one section (1) for covering a part of the body of a user, said section comprising a layer inner textile (3) and an outer textile layer (4) between which extends a thermal insulation network (5) comprising at least one air bead (6) formed by welding membrane parts (7a, 7b) respectively associated with one of said layers.

12. Clothing article according to claim 1 1, characterized in that the textile layers (3, 4) are made together by seamless knitting.

13. Clothing article according to one of claims 1 1 or 12, characterized in that the textile layers (3, 4) together have a basis weight of less than 300 g / m ² to form an undershirt.

14. Article of clothing according to claim 13, characterized in that the section (1) of recovery has an elasticity allowing the plating of the shirt on the body.