Method for creating luggage, particularly a flexible or semi-rigid travel bag

1. A method for creating a luggage bag, said method comprising the following operations:

a) creating a one-piece casing having an inner surface and an outer surface, the casing being flexible, the casing having a housing and a flap, the flap being designed for placement in a folded-in position in which the casing has an interior volume and a slit extending between the housing and the flap in a U-shape comprising two longitudinal portions connected by a transverse portion, the slit being one continuous slit, and

b) attaching fixing a pulling device on the outer surface of the casing, the pulling device forming a sealing device on the housing and the flap, at the slit and covering the entire slit.

2. The method according to claim 1 , wherein in operation a), the casing is entirely created by knitting, using at least one structural yarn.

3. The method according to claim 2 , wherein the at least one structural yarn is knitted with a first density in a first area of the casing and the at least one structural yarn is knitted with a second density in a second area of the casing, the second density being substantially twice the first density.

4. The method according to claim 2 , wherein the at least one structural yarn is knitted with a first density in a first area of the casing and the at least one structural yarn is knitted with a second density in a second area of the casing, the second density being greater than the first density.

5. The method according to claim 2 , wherein the creation of the casing during operation a) comprises the use of two structural yarns of different colors.

6. The method according to claim 1 , wherein:

creating the casing during operation a) comprises the use of a thermoplastic polymer, then

thermoforming the casing.

7. The method according to claim 1 , wherein creating the casing during operation a) comprises the use of a polyamide structural material.

8. The method according to claim 1 , wherein, during operation b), a rigid shell is fixed to the housing and to the flap, on each side of the slit, over the entire slit.

9. The method according to claim 8 , wherein the rigid shell is fixed to the inner surface of the casing.

10. The method according to claim 1 , wherein:

the pulling device comprises a telescopic bar, two tubes, and a protective plate, the telescopic bar has two arms and a handle connecting the arms, the arms of the telescopic bar being mounted in the tubes so as to slide between a folded position and an extended position of the bar,

the tubes are fixed on the outer surface of the casing and cover the longitudinal portions of the slit, and

the protective plate is fixed on the outer surface of the casing and covers the transverse portion of the slit.

11. A method for creating a luggage bag said method comprising the following operations:

a) creating a one-piece casing having an inner surface and an outer surface, the casing being flexible, the casing having a housing and a flap, the flap being designed for placement in a folded-in position in which the casing has an interior volume and a slit extending between the housing and the flap, the slit being one continuous slit, and

b) attaching a sealing device on the housing and the flap at the slit

wherein creating the casing during operation a) comprises:

creating the housing with a main face, a first longitudinal face, a second longitudinal face, a first transverse face, and a second transverse face,

creating the flap in substantially flat form, and

the flap is designed to be placed in an open position in which the flap is substantially in the extension of the second transverse face and in the folded-in position, the slit extending around the flap and only along the first longitudinal face, the second longitudinal face, and the first transverse face.

12. The method according to claim 11 , comprising:

during operation a) creating the slit in a U-shape comprising two longitudinal portions connected by a transverse portion, and

during operation b), fixing a pulling device on the outer surface of the casing, the pulling device forming a sealing device and covering the entire slit.

13. A method for creating a luggage bag, said method comprising the following operations:

creating a one-piece casing having an inner surface and an outer surface, the casing being flexible, the casing having a housing and a flap, the flap being designed for placement in a folded-in position in which the casing has

an interior volume and a slit extending between the housing and the flap, the slit being one continuous slit, and

attaching a sealing device on the housing and the flap, at the slit,

making an incision by cutting into the casing,

inserting an attachment portion of an accessory, through the incision,

depositing glue between the attachment portion of the accessory and the casing, and

sewing the attachment portion of the accessory to the casing, near the incision.

14. The method according to claim 13 , wherein the casing is cut by ultrasound.

15. A method for creating a luggage bag, said method, comprising the following operations:

creating a one-piece casing having an inner surface and an outer surface, the casing being flexible, the casing having a housing and a flap, the flap being designed for placement in a folded-in postion in which the casing has

an interior volume and a slit extending between the housing and the flap, the slit

being one continuous slit, and

attaching a sealing device on the housing and the flap, at the slit,

making an incision by cutting into the casing,

inserting an attachment portion of an accessory, through the incision,

depositing glue between the attachment portion of the accessory and the casing, and

sewing the attachment portion of the accessory to the casing, near the incision.