SPRING UNIT WITH SPRINGS IN POCKETS, PROVIDED WITH A MULTI-LAYERED IMPERMEABLE FABRIC Russian patent published in 2021 - IPC A47C27/00 

FIELD: textiles.

SUBSTANCE: claim relates to a fabric intended for use in products for lying and sitting, and, more specifically, for use in a spring unit with springs in pockets, used in products for lying and sitting. The objectives of the invention consist in providing a spring unit with springs in pockets, made at least partially using a fabric impermeable to an air flow and not allowing for the passage of an air flow through the fabric, but allowing for entrance of air into the pockets and exit of air from the pockets with different flow rates as a reaction to different loads applied to one or more pockets, and also in providing a spring unit with springs in pockets, made at least partially using a fabric impermeable to an air flow and not allowing for the passage of an air flow through the fabric, but allowing for entrance of air into the pockets and exit of air from the pockets through gaps in the seams of the pockets. The objectives of the invention also consist in providing a fabric for the spring unit with springs in pockets, impermeable to an air flow and not allowing for the passage of an air flow through the fabric, but permanently attachable thereto by means of seams divided into sections, and in providing a method for producing a fabric for the spring unit with springs in pockets, weldable thereto by means ultrasonic welding, impermeable to an air flow, not allowing for the passage of an air flow through the fabric, and not creating noise. The spring unit with springs in pockets is comprised of multiple parallel rows of springs placed in individual pockets. Each row is attached to at least one adjacent row. Each row has a first and a second opposite fabric webs and multiple pockets formed along the length of the row by means of transverse seams divided into sections and connecting said webs. The gaps between the seam sections allow the passage of air into and from the pockets, despite the fact that the fabric is impermeable to an air flow and does not allow for the passage thereof through the fabric. The fabric has at least four layers. The size of the gaps determines the stiffness or the "sensation" of the spring unit with springs in the pockets or part thereof.

EFFECT: production of a fabric usable in a spring unit with springs in pockets, used in products for lying and sitting.

21 cl, 28 dwg