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US 10,293,539 B2Granted
Method for manufacturing multi-barrier layer blow molded containers
AssigneePrintpack Illinois, Inc.
InventorsVivek A. Chougule, Rabeh H. Elleithy, David T. Foster, Harold S. Bowen
Life of this patent
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Abstract
Methods of making containers are provided, including providing a material sheet having at least two barrier layers and at least two polymer layers, forming the material sheet into a tube, sealing the tube at a seal area, and blow molding the tube to form a container in which the at least two barrier layers form a substantially continuous barrier at the seal area.
Claims20
A method of making a container, comprising:
- providing a material sheet comprising at least two barrier layers and at least two polymer layers;
- forming the material sheet into a tube by lap sealing the material sheet lengthwise at a seal area;
- heating the tube such that the at least two barrier layers form a substantially continuous barrier at the seal area;
- and
- blowing the heated tube against a mold, to form a container in which there is either no gap between two of the barrier layers or a gap between two of the barrier layers is 1 nm or less, at the seal area.
2 more elements
A method of making a container, comprising:
- providing a material sheet comprising at least two barrier layers and at least two polymer layers, wherein two of the at least two polymer layers are outer layers and the at least two barrier layers are inner layers disposed between the outer layers;
- forming the material sheet into a tube by lap sealing the material sheet lengthwise at a seal area;
- and
- blow molding the tube by heating the tube and blowing the tube against a mold, to form a container in which the at least two barrier layers form a substantially continuous barrier at the seal area, in which there is either no gap between two of the barrier layers or a gap between two of the barrier layers is 1 nm or less.
1 more element
A method of making a container, comprising:
- providing a material sheet comprising at least two barrier layers and at least two polymer layers, wherein the at least two polymers layers have a total thickness from about from about 1 percent of a thickness of the material sheet to about 95 percent of the thickness of the material sheet;
- forming the material sheet into a tube by lap sealing the material sheet lengthwise at a seal area;
- and
- blow molding the tube by heating the tube and blowing the tube against a mold, to form a container in which the at least two barrier layers form a substantially continuous barrier at the seal area, in which there is either no gap between two of the barrier layers or a gap between two of the barrier layers is 1 nm or less.
1 more element
Dependencies are inferred from the claim text.