[특허]Packaging for shipment and containment of hazardous wastes

Packaging for shipment and containment of hazardous wastes 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	B65D-030/08
출원번호	US-0821267 (1992-01-10)
발명자 / 주소	Russo Joseph D. (Palo Alto CA) Russo Laurence M. (Oakland CA)
출원인 / 주소	Rousseau Research, Inc. (Palo Alto CA 02)
인용정보	피인용 횟수 : 33 인용 특허 : 0

초록 ▼

The present invention pertains to a method of packaging hazardous liquids for shipment or containment, and to the structure and composition of the packaging which can be used to practice the method. The method comprises packaging a hazardous liquid for shipment or containment wherein the hazardous liquid, present in at least one sealed container or in a leaking container, respectively, is placed in a package which can be sealed so that the package completely surrounds and isolates the container, wherein the improvement comprises: constructing the packaging material so that it comprises at least two layers, including an interior layer and an exterior layer, wherein the interior layer of the packaging material adjacent to the sealed or leaking container can be penetrated by liquid which escapes from the container, and wherein the exterior layer of the packaging material, the external portion of which is in contact with the external environment, is impermeable by the liquid and by hazardous vapor therefrom. Typically the packaging material is comprised of three layers, the interior, permeable layer, an adjacent layer which comprises an absorbent or adsorbent, and the exterior impermeable layer.

대표청구항 ▼

A shipping package for safe containment during shipping of a container of hazardous material containing at least one etiologic agent comprising in operative combination: a) a multi-layer pouch having generally parallel spaced interior and exterior walls defining a central volume for receiving therein a hazardous material secondary container assembly; b) said multi-layer pouch including as said interior wall a first, interior layer contactable by said container; c) said interior layer is easily and rapidly permeable throughout its entire interior extent by liquid escaping from said hazardous material container; d) said multi-layer pouch including as said exterior wall a second, exterior plastic layer having an external surface in contact with the external ambient environment; e) said exterior layer is impermeable by said liquid and by hazardous vapors from said hazardous material; f) a seal flap formed from an extension of one exterior wall layer beyond a terminal edge of said interior layer which is sealable to an opposed exterior wall layer to define an opening to said central volume, said pouch upon sealing closure in the area of said flap completely surrounding and isolating said container; g) seal means for completely adhesively sealing said package opening in said area of said flap so that said seal is impermeable by said hazardous liquid, or the vapors or an etiologic agent from said hazardous material; h) a third layer of absorbent cellulosic wadding material disposed secured in a place between said first interior layer and said second exterior plastic layer; i) said interior permeable layer comprises a fibrous, woven or non-woven material which retains said absorbent wadding layer in place and permits rapid passage of liquid therethrough for absorption by said wadding; j) said absorbent material extending throughout the entire area of said interior layer which defines said central volume, so that upon closure of said flap, said absorbent material substantially completely encloses said hazardous material container, and upon any accidental release of hazardous liquid from said container during shipping there is absorbent material disposed immediately adjacent to any point of leakage through said permeable interior layer; k) the density of said absorbent wadding material layer being sufficient to contain broken shards from said hazardous material container; l) at least a portion of said wadding layer includes wicking channels which aid in the distribution of liquid to portions of said wadding remote from the area of said container from which said liquid is escaping; m) the volume of said absorbent wadding material layer being sufficient to contain and completely absorb all liquid from said hazardous material upon release from said container while said exterior layer prevents leakage of liquid and vapors to the external ambient environment; and n) said adhesive seal providing direct sealing of said opposed exterior wall layers to each other without contacting said first interior layer and said absorbent wadding material.

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Packaging for shipment and containment of hazardous wastes 원문보기

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