Blow-molded lamination container and manufacturing method thereof
AssigneeSr Packaging Inc. Taiwan Branch (Seychelles)
InventorChia-Ching Chen
Life of this patent
Estimating the term…
Abstract
A blow-molded lamination container includes an outer layer and an inner layer. The outer layer has a bottom and an air-inletting seam. The air-inletting seam is disposed through the bottom of the outer layer, and is formed from a tapering opening by cooling shrinkage. The inner layer is disposed in the outer layer, is capable of being filled with a content and contracts with respect to the outer layer, and is not nipped within the air-inletting seam by the outer layer. A width of a widest portion of the air-inletting seam is at least twice greater than a width of a narrowest portion of the air-inletting seam. A manufacturing method for the blow-molded lamination container is also provided.
Claims13
A blow-molded lamination container comprising:
- an outer layer having
- a bottom;
- an air-inletting seam disposed through the bottom of the outer layer, and formed from a tapering opening by cooling shrinkage;
- and
- an inner layer disposed in the outer layer, being capable of being filled with a content and contracting with respect to the outer layer, and being not nipped within the air-inletting seam by the outer layer;
- wherein a width of a lower side portion of the air-inletting seam is at least twice greater than a width of an upper side portion of the air-inletting seam.
A manufacturing method of a blow-molded lamination container comprising the following steps:
- preparing a laminated tube comprising an outer layer and an inner layer;
- setting the laminated tube in a mold composed of two halves, wherein one of the two halves has a cutting tool movably mounted thereon;
- clamping the two halves of the mold, and making the outer layer and the inner layer of the laminated tube compressed by bottoms of the two halves and joined;
- inserting a nozzle and injecting air into the laminated tube from a top end thereof, and pushing the laminated tube out to match the two halves of the mold to be shaped as a blow-molded lamination container;
- moving the cutting tool, cutting off residues of the outer layer and the inner layer, and engraving an opening with a triangular cross section on a bottom of the outer layer;
- and
- opening the mold, taking out the blow-molded lamination container, and generating an air-inletting seam from the opening with a triangular cross section;
- wherein the inner layer is not nipped within the air-inletting seam by the outer layer.
Dependencies are inferred from the claim text.