Back to results
US 12,679,077 B2Granted
Reinforced film for biocontainers
AssigneeEMD Millipore Corporation
InventorsBrian Pereira, John Saragosa, Joseph Muldoon
Life of this patent
Estimating the term…
Abstract
A material for biocontainers comprising a film formed of two or more layers forming a body to the film, the film having an interior and exterior side, and a substrate incorporated in the body of the film wherein the substrate is formed of a fibrous material, wherein each of the at least one of the two or more layers comprises an ethylene vinyl acetate resin. A non-constrained pressure test is also disclosed.
Claims5
A material for biocontainers comprising:
- three layers, wherein the three layers are ordered as an inner contact zone, a gas impermeable zone, and an outer strength zone comprising two layers of polyethylene;
- wherein the inner contact zone comprises a first interior side layer and an exterior side layer, the first interior side layer comprising an ethylene vinyl acetate and the exterior side layer comprising ultra-low density polyethylene;
- wherein the gas impermeable zone comprises an ethylene vinyl alcohol material;
- and
- a stress-inhibiting substrate disposed between the inner contact zone and the gas impermeable zone, wherein the stress-inhibiting substrate is formed of a fibrous polyamide material and wherein the stress-inhibiting substrate is embedded within an ethylene vinyl acetate resin, forming a discontinuity wherein cracks cannot propagate into or through the inner contact zone;
- a first tie layer comprising ethylene vinyl acetate disposed between the gas impermeable zone and the stress-inhibiting substrate;
- and
- a second tie layer comprising ethylene vinyl acetate disposed between the stress-inhibiting substrate and inner contact zone, forming a flexible material having an embedded substate that is resistant to stress concentrations and cracks, maintaining sterility.
5 more elements
Dependencies are inferred from the claim text.