摘要:
A method and apparatus is disclosed which include a pair of opposed seal bars for the manufacture of reclosable packages. The method and apparatus are particularly adaptable to form fill seal manufacture of reclosable packages. At least one of the opposed seal bars includes a rubberized or otherwise deformable sealing surface. This allows a hermetic seal to be formed across an abrupt transition of thickness of material between the opposed seal bars, such as when a zipper ends adjacent to a side seal in a reclosable bag.
摘要:
A method and apparatus is disclosed which include a pair of opposed seal bars for the manufacture of reclosable packages. The method and apparatus are particularly adaptable to form fill seal manufacture of reclosable packages. The first opposed seal bars includes a concave metal sealing surface and the second opposed seal bar includes a rubberized or otherwise deformable sealing surface. This allows a hermetic seal to be formed across an abrupt transition of thickness of material between the opposed seal bars, such as when a zipper ends adjacent to a side seal in a reclosable bag.
摘要:
The present disclosure relates to methods for forming reclosable bags with slider zippers which can be used in high pressure pasteurization. In particular, these methods form reclosable bags with a shroud formed over the slider zipper, with a patch or cap for protecting the slider during high pressure pasteurization. When the user tears the shroud from the bag, the patch or cap remains attached to the shroud but releases from the slider. An alternative embodiment forms an air pocket in the shroud to protect the slider.
摘要:
The disclosure relates to a semi-soft cap or patch which is secured by adhesive to a slider on a zipper in a reclosable package. This cap or patch prevents the slider from puncturing the web or film of the bag during high pressure pasteurization. Further, the cap or patch is secured to a tear-away header which is formed as a shroud over the zipper. This allows the user to tear off the header which likewise removes the cap or patch from the slider. The header, with the cap or patch still attached thereto, can thereafter be disposed of as a single piece.
摘要:
A method of manufacturing flexible containers that are hermetically resealable. Each resealable container comprises a receptacle and a pair of plastic zipper strips. The zipper strips are flattened at the ends within the side seal regions and are joined to each other, without substantial deformation of the closure profiles, in respective transition areas substantially contiguous with the side seals. These transition areas of zipper strip joinder assist in providing a leakproof transition from the openable section of the zipper to the side seals, where the closure profiles are fused and flattened (i.e., crushed).
摘要:
The disclosure pertains to various embodiments of zippers with a tear flange for use in a reclosable flexible package or bag. A line of weakness can be introduced into the tear flange by application of a peel seal polymer resin or of a foaming agent. The disclosure includes further embodiments wherein lines of weakness are introduced into the flange of zippers in reclosable packages or bags.
摘要:
The disclosure relates to a semi-soft cap or patch which is secured by adhesive to a slider on a zipper in a reclosable package. This cap or patch prevents the slider from puncturing the web or film of the bag during high pressure pasteurization. Further, the cap or patch is secured to a tear-away header which is formed as a shroud over the zipper. This allows the user to tear off the header which likewise removes the cap or patch from the slider. The header, with the cap or patch still attached thereto, can thereafter be disposed of as a single piece.
摘要:
The disclosure pertains to a sleeve cover for a slider clip which is used for such applications as high pressure pasteurization wherein high pressure is applied to a reclosable bag, including a zipper and slider, which typically includes foodstuffs such as meat products. The sleeve cover is molded, glued or otherwise attached, to the slider to prevent the film of the bag from pressing against and entering the interstices between the slider and the zipper profile and subsequently deforming, pinching or rupturing.
摘要:
This disclosure pertains to a child deterrent closure with multiple interlocking elements on each zipper profile. The lower interlocking element of one of the profiles includes an interior flange which is unsealed thereby causing opening forces on that profile to be directed to a lower seal rather than to the lower interlocked elements. The interior flange must be moved to expose the lower interlocked elements and to direct opening forces to the lower interlocked elements.
摘要:
The disclosure pertains to various embodiments of zippers with a tear flange for use in a reclosable flexible package or bag. A line of weakness can be introduced into the tear flange by application of a peel seal polymer resin or of a foaming agent. The disclosure includes further embodiments wherein lines of weakness are introduced into the flanges of zippers in reclosable packages or bags.