Sealed single-dose package with laser incision and related production method
AssigneeEasysnap Technology S.r.l.
InventorsAndrea TAGLINI, Tomas DI GIROLAMO, Domenico Antonio FLORIO
Life of this patent
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Abstract
A sealed single-dose package with break opening has a multilayer semi-rigid sheet having a carrier layer, an inner layer and a metal barrier layer interposed between the carrier layer and the inner layer, a flexible sheet overlapped and welded to the semi-rigid sheet to form an inner pocket for a product, an outer incision concerning only the carrier layer, and an inner incision concerning only the inner layer. The inner incision is a laser incision. The laser is a CO2 laser allowing incision of organic materials. A beam of the CO2 laser encountering the metal barrier layer is reflected towards the inner layer.
Claims11
1-9. (canceled)
A sealed single-dose package with break opening, comprising:
- a semi-rigid sheet comprising a rear face and an opposite front face, the semi-rigid sheet being a multilayer comprising:
- a carrier layer having the rear face;
- an inner layer having the front face, the inner layer comprising polyethylene or polypropylene;
- a metal barrier layer interposed between the carrier layer and the inner layer, the metal barrier layer being made of aluminum;
- a flexible sheet comprising an inner face and an outer face, overlapped on the semi-rigid sheet so that the inner face faces the front face, and welded to the front face to form an inner pocket for containing one dose of a product;
- an outer incision on the rear face of the semi-rigid sheet, at the inner pocket, which only involves the carrier layer;
- and
- an inner incision on the front face of the semi-rigid sheet, at the inner pocket, which only involves the inner layer, the inner incision being a laser incision,
- wherein the carrier layer is made of paper, cardboard or other predominantly cellulose-based material, and
- wherein the inner incision only partially interrupts the inner layer, and the metal barrier layer remains covered by a residual portion of the inner layer.
A method for manufacturing a sealed single-dose package with break opening, the method comprising:
- providing a semi-rigid sheet comprising a rear face and an opposite front face, the semi-rigid sheet being a multilayer comprising:
- a carrier layer having the rear face, the carrier layer being made of paper, cardboard or other predominantly cellulose-based material;
- an inner layer having the front face, the inner layer comprising polyethylene or polypropylene;
- and
- a metal barrier layer interposed between the carrier layer and the inner layer, the metal barrier layer being made of aluminum;
- at an inner pocket, making an outer incision on the rear face of the semi-rigid sheet, the outer incision only involving the carrier layer;
- at the inner pocket and aligned with the outer incision, making an inner incision, by a CO2 laser, on the front face of the semi-rigid sheet, the inner incision only involving the inner layer;
- and
- overlapping a flexible sheet comprising an inner face and an outer face on the semi-rigid sheet so that the inner face faces the front face, and welding the flexible sheet to the front face to form the inner pocket for containing one dose of a product,
- wherein making the inner incision by the CO2 laser includes at least partially incising the inner layer without incising the metal barrier layer, and
- wherein the inner incision only partially interrupts the inner layer, and the metal barrier layer remains covered by a residual portion of the inner layer.
Dependencies are inferred from the claim text.