摘要:
There is provided a lid with a center panel, a rim portion, and a hinge portion for sealing a container. The rim portion is designed to fit around an opening of a container and includes an inner wall for engaging a surface of the container opening. The hinge portion connects the rim portion to the center panel and includes flex points to allow axial movement of the center panel and corresponding radial movement of the rim portion to alternate the lid between an unsealing position and a sealing position. The sealing position provides an improved seal between the inner wall of the rim portion of the lid and the container. The lid may be formed by a two shot mold process in which the hinge portion consists of a more compliant material than the center panel and rim portion. The, lid may also include a flexible barrier membrane for enhanced sealing of the container.
摘要:
One or more sheet material layers in a multi-layer laminated structure is reinforced by adhesive bridges that extend through openings in the layer and tie together the layers on either side of the reinforced layer. A plurality of openings are provided in the layer or layers to be reinforced. The openings are spaced apart and distributed over the surface of the layer. Accordingly, when the layer is incorporated into a multi-layer structure, the adhesive applied to the layer, or to the layers on either side thereof, is forced through the openings so that a continuous adhesive connection is formed between the layers on opposite sides of the reinforced layer via the adhesive bridges that extend through the openings.
摘要:
A retortable container and an easy-opening closure for hermetic sealing of an open end thereof. The closure includes a metal end ring adapted to be double seamed to an open end of the retortable container, an intermediate area extending radially inward and defining an opening to an interior of the container, and a folded area folded into the interior of the container. The folded area extends radially outward from the opening and substantially parallel to at least an adjacent portion of the intermediate area. A first membrane patch overlaps and is bonded to an under side of the intermediate area of the end ring such that the first membrane patch prevents contamination of contents of the container by the metal end. A second membrane patch covers the opening and is bonded to an upper side of the first membrane patch. The bonds have predetermined shear and tensile force strengths sufficient to withstand shear and tensile forces created during retort processing of the container, while allowing easy-opening of the container by peeling the second membrane patch.