POCKETED SPRING UNIT AND METHOD OF MANUFACTURE

• Main Authors: SPINKS SIMON, CLARE DAVID
• Format: Patent
• Language: Chinese; English
• Published: 10.04.2020
• Subjects: BEDS; CHAIRS; COFFEE MILLS; DOMESTIC ARTICLES OR APPLIANCES; FURNITURE; HUMAN NECESSITIES; SOFAS; SPICE MILLS; SUCTION CLEANERS IN GENERAL

A resilient unit has strings of individual coil springs (not shown) inside pockets (120) are arranged in an array. The strings together form a spring unit and are each secured to a common cover sheetS, which comprises a non- woven elastic fabric. It is welded ultrasonically or thermally whilst under tension in one or both of its major dimensions - i.e. in-plane - to the pockets (120), the material of which is substantially inelastic and non- woven. In this example the welds, labelled W, are located substantially centrally with respect to the generally circular end surfaces of the pockets. 一种弹性单元具有位于袋(120)内部布置成阵列的单个螺旋弹簧的串(未示出)。这些弹簧的串共同形成弹簧单元并且均被固定到共用覆盖片S，其包括非织造弹性织物。在共用覆盖片的主要尺寸中的一个或两个(即，平面内)处于张力下时，将其超声焊接或热焊接至袋(120)，袋(120)的材料基本上是无弹性的并且是非织造的。在该示例中，标记为W的焊接点相对于袋的大致圆形端表面大体上居中。