Pocketed springs assembly, mattress and pocketed springs assembly manufacturing method
A pocket spring assembly 1 includes a core 1 ′ of a pocket spring assembly formed by a plurality of adjacent first pocket spring webs 2 and at least one second pocket spring web 4 attached to the core. Additional strips ( 6 ) are provided connecting the at least one pocket spring web 2 with the first layer ( 3 ), while on the other side the pocket spring webs 4 are attached to the extending parts of the textile layer. The layers 3,3 ′ are attached to the core 1 ′. A mattress contains a pocket spring assembly and a method is for manufacturing such an assembly.
1 . A pocket spring assembly comprising:
a plurality of first pocket spring webs,
wherein adjacent first pocket spring webs are joined together to form a core of the pocket spring assembly, a first layer of textile material and a second layer of textile material attached to a first and second surface of the core of the pocket spring assembly, respectively, at least one second pocket spring web attached to a first lateral surface of said core of the pocket spring assembly, forming a pocket spring assembly,
wherein said second pocket spring web extends perpendicularly to a direction of the first pocket spring webs, wherein springs in the first pocket spring webs have different stiffness characteristics than springs in said at least one second pocket spring web,
a first strip of textile material which is attached to at least one said second pocket spring web and to the first layer of textile material, and the second layer of textile material has a part extending beyond the core of the pocket spring assembly to which is attached said at least one second pocket spring web.
2 . The pocket spring assembly according to claim 1 , wherein the core of the pocket spring assembly comprises longitudinal ends, and wherein one or more third pocket spring webs are arranged at one of the longitudinal ends of the core of the pocket spring assembly, wherein the springs in the third pocket spring webs have different stiffness characteristics than the springs in the first pocket spring webs.
3 . The pocket spring assembly according to claim 1 , wherein the core of the pocket spring assembly comprises opposed longitudinal ends, and wherein one or more third pocket spring webs are arranged at both longitudinal ends of the core of the pocket spring assembly, wherein the springs in the third pocket spring webs have different stiffness characteristics than the springs of the first pocket spring webs.
4 . The pocket spring assembly according to claim 1 , wherein a set of two second pocket spring webs is attached to the first strip of textile material and to the first layer of textile material and to the part of the second layer of textile material extending beyond the core of the pocket spring assembly.
5 . The pocket spring assembly according to claim 1 , wherein the pocket spring assembly comprises one or more second pocket spring webs, attached to a second lateral surface of the core of the pocket spring assembly, wherein the second layer of textile material has a second part extending beyond the core of the pocket spring assembly to which one or more second pocket spring webs attached to the second side surface, and an additional second first strip of textile material is attached to one or more second pocket spring webs attached to the second side surface and to the first layer of textile material.
6 . A mattress comprising a pocket spring assembly according to claim 1 .
7 . A method of manufacturing a pocket spring assembly comprising the steps of:
a) providing a core of the pocket spring assembly, wherein said core of the pocket spring assembly comprises a plurality of first pocket spring webs, wherein adjacent first pocket spring webs are joined together to form said core of the pocket spring assembly,
b) attaching a first layer of textile material and a second layer of textile material to first and second surfaces of said core of the pocket spring assembly, respectively, wherein the first layer of textile material covers the first surface of the pocket spring core and does not extend beyond a perimeter, while the second layer of textile material has a portion extending beyond the core of the pocket spring assembly,
c) providing at least one second pocket spring web in which springs have different stiffness characteristics than springs in the first pocket spring webs,
d) attaching a strip of textile material to said at least one second pocket spring web in a plane parallel to a plane of the first layer of textile material, wherein after attachment said strip of textile material has an unattached portion extending beyond a surface where said strip is attached to the at least one second pocket springs web,
e) forming a pocket spring assembly by attaching said at least one second pocket spring web obtained in step (d) to a first lateral surface of the core of the pocket spring assembly so that said unattached extending part of the strip of textile material is attached to the first layer of textile material and, on an opposite side, said at least one second pocket spring web is attached to a part of the second layer of textile material extending beyond the core of the pocket spring assembly.
8 . The method according to claim 7 , wherein in step a) the core of the pocket spring assembly is provided with one or more third pocket spring webs attached to an outermost pocket spring web at a longitudinal end of the pocket spring assembly core, wherein springs in the third pocket spring web have different stiffness characteristics than the springs in the first pocket spring webs.
9 . The method according to claim 7 , wherein in step a) the core of the pocket spring assembly comprises one or more third pocket spring webs attached to the outermost pocket spring webs at both longitudinal ends of the core of the pocket spring assembly, springs in the third pocket spring web having different stiffness characteristics than the springs in the first pocket spring webs.
10 . The method according to claim 7 , wherein in step b) the second layer of textile material has two opposite portions extending beyond a perimeter of the core of the pocket spring assembly, and in step e) one or more second pocket spring webs obtained in accordance with step, are additionally attached to a second lateral surface of the core of the pocket spring assembly, such that said unattached extending portion of the strip of textile material is attached to the first layer of textile material, and on the opposite side at least one second pocket spring web is attached to a portion of the second layer of textile material extending beyond the core of the pocket spring assembly.