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US 9,283,704 B2Granted
Multilayer containers
AssigneeBecton, Dickinson and Company
InventorsBrian F. Ahern, Donald J. Carano, Nicholas A. Grippi, Paul R. Soskey, Gregory L. Lusardi
Life of this patent
Estimating the term…
Abstract
A multilayer evacuated blood collection tube is provided having a first tube layer, and a second tube layer formed on the first tube layer and a closure, the second tube layer being a nanocomposite barrier layer. Such containers include but are not limited to blood collection tubes, evacuated blood collection tubes, centrifuge tubes, culture bottles, and syringe barrels.
Claims18
A multilayer evacuated blood collection tube comprising:
- an open-ended tube structure having a top edge, the open-ended tube structure comprising an inner polymeric skin layer, an outer polymeric skin layer, and a polymeric core layer wherein the core layer is formed from a polymeric material selected from the group consisting of polypropylene and polyester, and the skin layers comprise a composite formed from polyester and montmorrillonite, said inner and outer polymeric skin layers and polymeric core layer being co-injected to form the tube structure free from fluid passageways located therebetween, wherein the core layer is non-compatible with the inner and outer skin layers and wherein the inner and outer polymeric skin layers encapsulate the core layer and the top edge has a cross-section of only the inner and outer skin layers to physically restrain the core layer from delamination from the inner and outer skin layers.
A multilayer evacuated blood collection tube comprising:
- an open-ended tube structure having a top edge, the open-ended tube structure comprising:
- a first tube layer;
- a second tube layer;
- a third tube layer, said first, second, and third tube layers being co-injected to form the tube structure wherein the first, second, and third tube layers are flush with respect to one another and wherein said first tube layer is formed from a material that is non-compatible with the second and third tube layers and is encapsulated by the second and third tube layers and the top edge has a cross-section of only the second and third tube layers to physically restrain the first layer from delamination from the second and third tube layers;
- and
- a closure adapted to fit said open end of said tube structure to define a tube interior, wherein the interior of the tube is evacuated.
3 more elements
Dependencies are inferred from the claim text.