Reclosable bag made of a paper-plastic laminate
AssigneeRummo S.P.A.
InventorCosimo Rummo
Life of this patent
Estimating the term…
Abstract
A reclosable bag (1) made of a paper-plastic laminate, having a rear side (8) and upper and lower heat-sealed edges (3, 4), comprises an external layer (5) made of paper and an inner polymeric lining film (7). A rear window (9) closed by the inner polymeric lining film (7) is formed in the external paper layer (5) on the rear side (8) of the bag (1). An easy open adhesive label (10) is permanently attached through a first portion (11) thereof on the external paper layer (5) of the upper edge (3) of the bag (1), and through a second portion (12) thereof releasably on the internal polymeric lining film (7) that closes the rear window (9).
Claims7
A re-closable bag (1) made of a paper-plastic laminate, comprising:
- an external layer of paper (5);
- an inner polymeric lining film (7);
- a front side (2) comprised of at least the external layer of paper (5);
- a rear side (8) comprised of at least the external layer of paper (5);
- upper and lower heat-sealed edges (3, 4) comprised of the external layer of paper (5);
- a rear window (9) located in the external layer of paper (5) on the rear side (8) the rear window (9) being closed by the inner polymeric lining film (7);
- and
- an easy open adhesive label (10) with i) a first portion (11) permanently attached on the external layer of paper (5) of the upper edge (3) of the bag (1) and ii) a second portion (12) releasably attached on a part of the inner polymeric lining film (7) that closes the rear window (9), the easy open adhesive label being reusable against the inner polymeric lining film that closes the rear window (9) of the re-closable bag, wherein,
- the easy open adhesive label has an adhesive layer on an active side and provides a connection between i) the external layer of paper layer (5) of the upper edge (3) of the bag (1) and ii) the part of the inner polymeric lining film (7) that closes the rear window (9), the adhesive layer allowing the bag to be opened and closed plural times, and
- a width of the rear window (9) is greater than a width of the easy open adhesive label located over the rear window such that the easy open adhesive label (10) is attached only to the external layer of paper (5) of the upper edge (3) of the bag (1) and the part of the inner polymeric lining film (7) that closes the rear window (9), and
- wherein removal of the second portion of the adhesive label from the inner polymeric lining film (7) that closes the rear window (9) is required to open the sealed upper edges of the bag and re-adhering the second portion of the adhesive label on the inner polymeric lining film (7) that closes the rear window (9) again joins the upper edges to the rear side of the bag.
A re-closable bag (1) made of a paper-plastic laminate, comprising:
- an external layer of paper (5);
- an inner polymeric lining film (7);
- a front side (2) comprised of at least the external layer of paper (5);
- a rear side (8) comprised of at least the external layer of paper (5);
- upper and lower heat-sealed edges (3, 4) comprised of the external layer of paper (5);
- a rear window (9) located in the external layer of paper (5) on the rear side (8) the rear window (9) being closed by the inner polymeric lining film (7);
- and
- an easy open adhesive label (10) with i) a first portion (11) permanently attached on the external layer of paper (5) of the upper edge (3) of the bag (1) and ii) a second portion (12) releasably attached on a part of the inner polymeric lining film (7) that closes the rear window (9), the easy open adhesive label being reusable against the inner polymeric lining film that closes the rear window (9) of the re-closable bag;
- and
- a front window (6) located in the external layer of paper (5) on the front side (2), wherein,
- the front window (6) is closed by the inner polymeric lining film (7),
- the easy open adhesive label has an adhesive layer on an active side and provides a connection between i) the external layer of paper layer (5) of the upper edge (3) of the bag (1) and ii) the part of the inner polymeric lining film (7) that closes the rear window (9), the adhesive layer allowing the bag to be opened and closed plural times,
- a width of the rear window (9) is greater than a width of the easy open adhesive label, and
- the inner polymeric lining film (7) covers only parts of an interior side of the external layer of paper (5), and includes a first inner polymeric lining film region that closes the rear window and a separate second inner polymeric lining film (7) that closes the front window, wherein areas of the external layer of paper (5) between the first and second inner polymeric lining film regions are free of the inner liner film (7).
A re-closable bag (1) made of a paper-plastic laminate, comprising:
- an external layer of paper (5) defining a front bag side (2) and a rear bag side (8), the external layer of paper (5) having upper and lower edges that are heat-sealed;
- an inner polymeric lining film (7) covering only portions of the external layer of paper;
- at least one window (9) located in the external layer of paper (5) and closed by the inner polymeric lining film (7);
- and
- a reusable, easy open adhesive label (10) with an adhesive layer that joins the upper edges of the external layer of paper (5) to the inner polymeric lining film (7) that closes the at least one window (9), the easy open adhesive label (10) being comprised of
- i) a first portion (11) permanently attached, via a first portion of the adhesive layer, on the upper edge (3) of the external layer of paper (5), and
- ii) a second portion (12) releasably attached, via a second portion of the adhesive layer, on a part of the inner polymeric lining film (7) that closes the at least one window (9), the easy open adhesive label being reusable against the inner polymeric lining film that closes the at least one window (9), the adhesive layer being reusable against the inner polymeric lining film that closes the at least one window (9) allowing the bag to be opened and closed plural times, wherein,
- removal of the second portion of the adhesive label from the inner polymeric lining film (7) that closes the at least one window (9) is required to open the sealed upper edges of the bag and
- re-adhering the second portion of the adhesive label on the inner polymeric lining film (7) that closes the at least one window (9) again joins the upper edges of the external layer of paper (5) to the inner polymeric lining film (7) that closes the at least one window (9).
Dependencies are inferred from the claim text.