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公开(公告)号：US5045207A
公开(公告)日：1991-09-03
申请号：US491912
申请日：1990-03-12
申请人： Luciano Fecondini , Enzo Vassarotti
发明人： Luciano Fecondini , Enzo Vassarotti
CPC分类号： B01D63/087 , B01D61/18 , G01N1/34 , G01N2001/4027 , G01N33/487
摘要： A device for concentrating solute-containing solutions, e.g. macromolecular sample solutions, by filtration through a semipermeable membrane, which device enables the user to obtain various different retentate concentrations by placing the device in different positions before use. The device preferably comprises one or more concentration units, each said concentration unit comprising one or more chambers, each chamber having at least one wall impermeable to sample solution and at least one wall, in opposing spaced relation to said sample solution impermeable wall, formed of a semipermeable membrane permeable to said solvent and impermeable to the macromolecules or other solutes to be retained, said membrane having at least two regions of different area which regions are impermeable to said solvent, each of said regions providing a deadstop preventing filtration to dryness of the solvent through the membrane and providing a different final retentate concentration; and means for drawing said solvent through the membrane.
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2.发明授权
公开(公告)号：US4833862A
公开(公告)日：1989-05-30
申请号：US551373
申请日：1983-11-10
申请人： Ermanno Bortolani , Enzo Vassarotti
发明人： Ermanno Bortolani , Enzo Vassarotti
CPC分类号： B65D75/305 , B65B11/52
摘要： By providing raised peripheral edges, preferably walls, for the supporting member of a vacuum skin package, a superior vacuum package is achieved when a product is vacuum packaged on such a supporting number. Wrinkles and weak spots are avoided. Preferably, the raised edges are formed in-line as the package is made.
摘要翻译： 通过为真空皮肤包装的支撑构件提供凸起的周边边缘，优选为壁，当将产品真空包装在这种支撑件上时，实现了优异的真空包装。 避免皱纹和弱点。 优选地，当制成包装时，凸起边缘成直线形成。
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公开(公告)号：US5076436A
公开(公告)日：1991-12-31
申请号：US536047
申请日：1990-06-11
申请人： Ermanno Bortolani , Enzo Vassarotti
发明人： Ermanno Bortolani , Enzo Vassarotti
CPC分类号： B65D75/305 , B65B11/52
摘要： In a vacuum skin package wrinkles and weak spots are avoided by providing a tray as the support or backing member rather than a flat sheet, the angle of the walls as they diverge outwardly being 91.degree. to 160.degree.. Especially useful is such a package when provided with a lid for stacking purposes.
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公开(公告)号：US4611456A
公开(公告)日：1986-09-16
申请号：US831118
申请日：1986-02-20
CPC分类号： B65B11/52 , B65D75/305
摘要： The invention relates to a method of forming containers useful in vacuum packaging applications which require that the packaged product be wrapped in an air-impervious enclosure.According to one aspect of the invention, the method comprises a step wherein a substrate of an air pervious, semipervious or impervious material is mold formed, and a subsequent step wherein an impervious film is applied on the molded substrate and adhered thereto to produce an impervious substrate. In another aspect, a product is placed on the impervious substrate and enclosed by an impervious film in a vacuum skin packaging process.
摘要翻译： 本发明涉及一种形成用于真空包装应用中的容器的方法，其需要将包装的产品包裹在不透气的外壳中。 根据本发明的一个方面，该方法包括一个步骤，其中透气的，半透明的或不透水的材料的基底是模具形成的，随后的步骤，其中不透水膜被施加在模制的基底上并粘附到其上以产生不透水 基质。 另一方面，将产品放置在不透水基材上，并在真空皮肤包装过程中由不透水膜包围。
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公开(公告)号：US4537011A
公开(公告)日：1985-08-27
申请号：US444956
申请日：1982-11-26
IPC分类号： B65B11/52
CPC分类号： B65B11/52
摘要： The invention provides a method of vacuum packing by defining a "dummy product" 17 alongside a product article 14 on a support sheet so that any "webbing" 18 is to the side of that projection 17 which faces away from the adjacent product article 14. That projection 17 can subsequently be trimmed to leave a webbing-free pack. Cutting down webbing reduces the risk of leakage of the pack. Preferably the height of the projection 17 is adjusted in response to the height of a product article 14 so that the extent of such webbing 18 is at a minimum.
摘要翻译： 本发明提供了一种通过在支撑片上与产品14一起定义“虚拟产品”17的真空包装方法，使得任何“织带”18位于远离相邻产品14的那个突出部17的一侧。 该突起17随后可以被修剪以离开无织带包装。 减少织带降低了包装泄漏的风险。 优选地，突起17的高度是响应于产品14的高度来调节的，使得这种织带18的程度最小。
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