Coiled spring has benefits over hinges
The use of Spirol coiled springs in hinged cosmetic powder compacts is demonstrating major advantages over traditional hinges in terms of cost and durability. In an industry where product quality is vital but margins small, the need to eliminate product failures is taking on more and more significance with cosmetic compact manufacturers.
However, the use of Spirol series 550 coiled spring pins simplifies the design as misalignment of the inner and outer case to provide friction is no longer necessary. By eliminating this requirement not only is the design and production process simplified, but also the risk of cracking, caused by induced stresses, is removed. This significantly reduces scrap during manufacturing and failure during use.
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