Bag body, and manufacturing method and manufacturing device for bag body
AssigneeIdemitsu Unitech Co., Ltd.
InventorRyo Katada
Life of this patent
Estimating the term…
Abstract
A bag includes: a film defining a containable space and a first area and a second area both facing the containable space; an elongated tearing guide piece directly or indirectly bonded to the first area; an elongated belt-shaped base disposed between the tearing guide piece and the second area and along the tearing guide piece; a tab defined by a cut portion penetrating through the first area of the film, the tearing guide piece and the belt-shaped base; and a surrounding seal area intersecting the tearing guide piece in a width direction, the surrounding seal area bonding the first area and the second area to define an area surrounding the tab.
Claims20
A bag comprising:
- a film defining a containable space, the film comprising a first area and a second area both facing the containable space;
- an elongated tearing guide piece directly or indirectly bonded to the first area;
- an elongated belt-shaped base disposed between the tearing guide piece and the second area along the tearing guide piece;
- an opposite base disposed along and opposite the belt-shaped base, the opposite base being bonded to the first area;
- at least one pair of engagement portions protrudes from respective ones of the belt-shaped base and the opposite base;
- a tab defined by a cut portion penetrating through the first area of the film, the tearing guide piece, and the belt-shaped base and not penetrating through the second area;
- and
- a surrounding seal area bonding the first area and the second area resulting in a non-sealed space in an area surrounding the tab, the non-sealed space located between the first area and the second area and spatially separated from the containable space, wherein the surrounding seal area intersects the tearing guide piece in a width direction, of the tearing guide piece at a boundary between the non-sealed space and the containable space to define an intersection rigidly bonding the belt-shaped base to the second area to cut the belt-shaped base when the belt-shaped base is pulled together with the tearing guide piece.
A bag comprising:
- a film defining a containable space, the film comprising a first area and a second area both facing the containable space;
- an elongated tearing guide piece directly or indirectly bonded to the first area;
- an elongated belt-shaped base disposed between the tearing guide piece and the second area along the tearing guide piece, the belt-shaped base being bonded to the first area at both sides in a width direction of the tearing guide piece to separate the tearing guide piece from the second area and having a gap facing a surface of the tearing guide piece opposite to the first area;
- a tab defined by a cut portion penetrating through the first area of the film, the tearing guide piece, and the belt-shaped base and not penetrating through the second area;
- and
- a surrounding seal area bonding the first area and the second area resulting in a non-sealed space in an area surrounding the tab, the non-sealed space located between the first area and the second area and spatially separated from the containable space, wherein the surrounding seal area intersects the tearing guide piece in the width direction, at a boundary between the non-sealed space and the containable space to define an intersection rigidly bonding the belt-shaped base to the second area to cut the belt-shaped base when the belt-shaped base is pulled together with the tearing guide piece.
Dependencies are inferred from the claim text.