A cover layer (23) of a fleece material for an innerspring unit (20) comprising a plurality of pocketed springs (29) is manufactured by supplying at least two longitudinal fleece webs (24, 25), which extend substantially parallel in a longitudinal direction and are spaced from one another, and repeatedly attaching a transverse fleece web (26, 27), which extends between the longitudinal fleece webs (24, 25) in a direction substantially perpendicular to the longitudinal direction, to the longitudinal fleece webs (24, 25). The transverse fleece web segments (26, 27) are attached to the longitudinal fleece webs (24, 25) such that they form together with the longitudinal fleece webs (24, 25) a framelike structure (21) serving as the cover layer (23).

A pocket spring string, a pocket spring mattress core and a mattress. The pocket spring string includes: springs; cloth, which is folded and provided with welds to form multiple adjacent pockets, each pocket being provided with an opening, and the springs being received in the pockets respectively; and thread provided to stitch the openings so that the springs are packaged in the pockets in a compressed state. The pocket spring mattress core is formed by connection of the pocket spring strings, and the mattress includes a mattress cover and the pocket spring mattress core. Because the top and/or bottom of each pocket is provided with the opening which is stitched by the thread, when the thread is removed, the springs can be quickly separated from the pockets, so that the metal material and the cloth are separated without any special technical means.

In order to manufacture an innerspring unit (31) comprising pocketed springs and having an increased stability at its edge regions, in a first step, an innerspring main body (30) comprising a plurality of first strings (14) of pocketed springs is provided. In a subsequent second step, at least one second string (13c, 13d) of pocketed springs is attached to a lateral surface of the innerspring main body (30), so that the at least one second string (13c, 13d) of pocketed springs extends in a longitudinal direction of the innerspring main body (30). The springs (13) of the at least one second string (13c, 13d) of pocketed springs have a spring characteristic or a spring geometry different from the springs of the plurality of first strings of the innerspring main body (30). The at least one second string (13c, 13d) of pocketed springs forms together with the innerspring main body (30) the innerspring unit (31).

A mattress assembly includes a chassis having top and bottom walls and first and second sidewalls that each extend from the top wall to the bottom wall. Inner surfaces of the walls and the sidewalls define an interior cavity. The top and bottom walls each include a first section that is connected to the first sidewall and a second section that is connected to the second sidewall such that the first sections are pivotable relative to the first sidewall and the second sections are pivotable relative to the second sidewall. The first section of the top wall is pivotable relative to the second section of the top wall and the first section of the bottom wall is pivotable relative to the second section of the bottom wall. A spring assembly is configured to be positioned within the interior cavity.

Compressible mattress assemblies for bed in a box applications consist of a first polymeric foam layer and a second polymeric foam layer, wherein the first polymeric foam layer has a thickness less than the second polymeric foam layer and has a property and/or a foam material that is different from the second polymeric foam layer. In other embodiments, the compressible mattress assemblies consist of a pocketed microcoil array intermediate the first and second polymeric foam layers.

Compressible mattress assemblies for bed in a box applications generally include a first foam layer and a second foam layer, wherein the first foam layer has a thickness less than the second foam layer and has a property and/or a foam material that is different from the second foam layer. In other embodiments, the compressible mattress assemblies consist of a pocketed microcoil array intermediate the first and second polymeric foam layers.

A pocketed spring assembly comprises a plurality of parallel strings of individually pocketed springs. A dimensionally stabilizing substrate is secured to at least some of the strings on one of the top and bottom surfaces of the strings. A scrim sheet is secured to at least some of the strings on an opposed surface of the strings to maintain the positions of the strings. The dimensionally stabilizing substrate is laterally rigid enough to maintain length and width dimensions of the coil spring assembly. However, the dimensionally stabilizing substrate is flexible enough to allow the pocketed spring assembly to be roll packed for shipping.

A circular foam for cushions and mattresses, cushions and mattresses provided therewith, and method for manufacturing such foam. The circular foam for cushions and mattresses includes a circular polymer and a nucleating agent, where the circular polymer is a polyester and/or an aromatic polymer, the circular foam includes an open cell structure, and a fatigue of at most 15% as determined according to ISO 1856:2018.

Mattress assemblies including coil innerspring units, coil innerspring units by themselves, and processes for making the coil innerspring units, wherein the coils within the coil innerspring unit are manufactured with the same geometry, same composition, and from the same gauge wire using different heat treatments to provide the coil innerspring unit with different spring rates.

A system for manufacturing a string of pocketed coil springs comprising: a coil-forming subsystem that produces two coil springs; a spring transporter subsystem that receives the two coil springs at a first position and conveys the two coil springs to a second position; a spring compressor subsystem that compresses the two coil springs; a fabric-folding subsystem that receives a piece of fabric and folds the fabric to create an open side; a spring inserter subsystem that receives the two compressed coil springs and inserts the two compressed coil springs between top and bottom surfaces of a folded piece of fabric; two welder subsystems that form first and second welds between top and bottom surfaces of the folded piece of fabric, the first welds and the second welds forming a plurality of pockets in the fabric, each of the plurality of pockets comprising a compressed coil spring.