FIELD: satisfaction of human life necessities.
SUBSTANCE: mattress with springs in pockets, containing coil springs arranged as spring elements and enclosed in coating material forming pockets, the spring elements are arranged in series in the elongated strips. A mattress contains a plurality of such interconnected strips arranged side by side. The elongated strips comprise a plurality of transverse seams disposed in parallel with the longitudinal direction of the coil springs to separate the pockets from each other. The middle part of the transverse seams fixes at least a layer of coating material on either side of the spring element to each other. At least some of the transverse seams are folded transverse seams in which the coating material near the end portion of the folded transverse seams is folded towards the middle of the transverse seams, whereby each of said folded transverse seams has at least one end portion, bonding at least twice as many layers of the coating material as in the corresponding transverse seam which is not folded.
EFFECT: elimination of tubercles on the surface.
15 cl, 8 dwg
