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Spool of pocketed springs
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A technology of pocket springs and spools, applied in the field of pocket spring cores, which can solve the problems of increased and limited spring winding speeds
Active Publication Date: 2021-12-24
NV BEKAERT SA
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Problems solved by technology
Spring winding speeds are increasing and this creates limitations for in-line processes as all steps of the manufacturing process must be able to follow higher spring winding speeds
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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[0041] figure 1 An exemplary spool 100 of a linear string of pocket springs according to the first aspect of the invention is shown. An exemplary spool includes a core 102 and a linear string 110 of pocket springs. The string of pocket springs 110 is helically wound on the spool and is in compression such that the pocket springs can expand as the string of pocket springs is unwound from the spool. The linear string 110 of pocket springs is wound in multiple layers along the radial direction of the bobbin. The linear string 110 of pocket springs is wound in alternating first and second layers across the width of the bobbin. After winding the string of pocket springs in a first layer in the first width direction of the bobbin, the string of pocket springs is wound in a second layer in a direction opposite to the first width direction across the width of the bobbin. In this example, successive layers of a linear string of pocket springs are in direct contact. However, it is a...
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Abstract
A spool (100) of a linear string (110, 210, 310, 410) of pocketed springs is disclosed. The linear string of pocketed springs comprises springs (212, 312, 412) each provided in a textile pocket (214, 314, 414). The springs (212, 312, 412) comprise helically coiled steel wire springs. The textile pockets (214, 314, 414) are assembled to each other in linear direction. The linear string (110, 210, 310, 410) has a width of one textile pocket (214, 314, 414). The string (110, 210, 310, 410) of pocketed springs is present in the spool (100) spirally wound and in a compressed state such that the pocketed springs (212, 312, 412) can expand upon unwinding the string (110, 210, 310, 410) of pocketed springs from the spool (100).
Description
technical field [0001] The present invention relates to the field of pocket spring cores for mattresses or cushions, such as for sofas. The present invention relates to spools providing such linear strings of pocket springs; and methods of making such spools. The invention also relates to a method of manufacturing a pocket spring core using a spool of linear spring of a pocket spring, and an apparatus for assembling a linear string of pocket springs into a two-dimensional spring core. Background technique [0002] Pocket spring cores for mattresses or mattresses are well known. The core comprises a two-dimensional array of helically wound springs, each spring disposed in a pocket made of woven fabric. This core is made by assembling linear strings of pocket springs cut to appropriate lengths parallel to each other. Assembly can be done with suitable adhesives. In most cases, the woven fabric from which the bag is made is a woven nonwoven, such as a spunbonded fabric. Th...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information
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