| 摘要 |
<p>A guarantee seal with pull tab for containers and its manufacture method which comprises a polymeric film in its top, and a bottom consists of a lamination which includes an EPE layer or a layer of PE film, a second layer of aluminium foil which is strongly adheres to the first layer, a third thermosealant layer which covers the aluminium layer in its outer. The top of the guarantee seal is joined to the bottom by an adhesive applied in strips, in such way that a part stays strongly laminated in the area where was applied the adhesive and the other one stays unstuck in the area which does not contain adhesive. The resulting structure is died cut in form of disc in such way that includes a laminated portion and one unlaminated portion, this last forming a pull tab in form of crescent which is used to easily pull and remove the seal of the mouth of the container.</p> |
