fig2
From: Stretchable zipper
Figure 2. Key structure designs of stretchable zipper and bilateral non-equivalent interlocking process. (A) Stretchable zipper under different conditions and (B) the specific structure of its teeth; (C) The specific structures of the novel slider; (D) The novel slider zipping two tapes with different strains; (E) A typical bilateral non-equivalent interlocking process; Under the condition of 15.0% = ε1 ≤ ε2, (F) the initial contact behavior of teeth within the slider during the zipping process.