Method for making a multi-layer plastic container having a carbon-treated internal surface
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
B05D-007/22
B05D-005/00
C23C-016/26
C23C-016/505
C23C-016/511
출원번호
US-0968374
(2001-10-01)
발명자
/ 주소
Slat, William A.
출원인 / 주소
Plastipak Packaging, Inc.
대리인 / 주소
Rader, Fishman & Grauer PLLC
인용정보
피인용 횟수 :
2인용 특허 :
26
초록▼
A method is provided for making a blow molded multi-layer container having an upper wall portion, including an opening; an intermediate sidewall portion positioned beneath the upper wall portion; and a base portion positioned beneath the intermediate sidewall portion. The container includes (i) a mo
A method is provided for making a blow molded multi-layer container having an upper wall portion, including an opening; an intermediate sidewall portion positioned beneath the upper wall portion; and a base portion positioned beneath the intermediate sidewall portion. The container includes (i) a molded inner layer formed from a plastic material, the inner layer having a vertical length and a carbon-treated inner surface; and (ii) a molded outer layer formed from recycled plastic that is substantially coextensive with the inner layer. The recycled outer layer comprises at least 40% by weight of the overall weight of the container, but can comprise more than 90% by weight. In a preferred embodiment, the thickness of the inner and/or outer layers is controllably adjusted along their respective vertical lengths. If functionally desirable, the inner layer and/or outer layer may also include additional barrier materials and/or oxygen scavenging/reacting materials.
대표청구항▼
A method is provided for making a blow molded multi-layer container having an upper wall portion, including an opening; an intermediate sidewall portion positioned beneath the upper wall portion; and a base portion positioned beneath the intermediate sidewall portion. The container includes (i) a mo
A method is provided for making a blow molded multi-layer container having an upper wall portion, including an opening; an intermediate sidewall portion positioned beneath the upper wall portion; and a base portion positioned beneath the intermediate sidewall portion. The container includes (i) a molded inner layer formed from a plastic material, the inner layer having a vertical length and a carbon-treated inner surface; and (ii) a molded outer layer formed from recycled plastic that is substantially coextensive with the inner layer. The recycled outer layer comprises at least 40% by weight of the overall weight of the container, but can comprise more than 90% by weight. In a preferred embodiment, the thickness of the inner and/or outer layers is controllably adjusted along their respective vertical lengths. If functionally desirable, the inner layer and/or outer layer may also include additional barrier materials and/or oxygen scavenging/reacting materials. in conjunction with more rigid component such that: a) during warming to room temperature the confection develops flexibility, b) when flexible, the confection may be bent or wobbled such that one end may distort to an angle of at least 5 degrees from other end and c) during the first 4 distortions, not more than 5% by weight of the rigid component falls off. 2. A composite frozen confection according to claim 1 in which the rigid component is a water ice, sorbet, sherbet, ice cream or other frozen dessert component. 3. A composite frozen confection according to claim 1, in which the gel phase is separate, as a distinct and elongated component block, such as a filling, a layer, a rope, a coating, or as laminations, provided the gel phase substantially extends longitudinally from one end of the product to the other end. 4. A composite frozen confection according to claim 1, in which the polyanionic gel is based on kappa-carrageenan. 5. A composite frozen confection according to claim 1, in the form of a stick bar. 6. A composite frozen confection according to claim 5, which have a gel core in the form of a rod and water ice in various geometric conformations adhered to the external surface of the core. 7. A composite frozen confection according to claim 6, in which the core of the gel component is present as a slightly conical cylinder and spiral stripes of water ice are present around the outside in the manner of a "helter-skelter" fun park slide's orientation. 8. A method for preparing a composite frozen confection according to claim 1, in which the gel component is contacted with the rigid component by molding, enrobing, spraying or co-extrusion. 9. A method according to claim 8, which comprises filling molds with a water ice mix, forming a frozen layer on the side wall of the molds, removing any unfrozen water ice mix from the molds and filling empty spaces in the molds with heated gel in order to produce a shell and core split, quiescently freezing the filled molds, inserting sticks, demolding and packaging the stick bars. 10. A method according to claim 8, which comprises utilizing a two step molding process wherein an internal mold of frustoconical shape is used for the gel core in a first step and an external mold of helicoidal shape is used for a water ice mix in a second step, filling the first series molds with the gel, quiescently freezing the cores, inserting sticks, demolding the sticked centers by surface-heating of the first molds, partly filling the second series of molds with water ice mix and placing the cores into the second series of molds, the liquid ice thus filling the empty spaces of the second molds and quiescently freezing the whole so that the water ice mix forms the more rigid component, demolding and packaging the stick bars.
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