JP2008273530A5 - - Google Patents

Claims (7)

A bag main body portion having a pair of flat portions which are made of a liquid impermeable film and constitute at least the front side and the back side of the bag;
An opening end portion that is disposed at one end of the bag body portion, becomes an opening portion or is already an opening portion, and
A chuck provided in the vicinity of the unsealing end and capable of reclosing the opening after unsealing;
The chuck is composed of a pair of engaging pieces that engage with each other,
Each of the engaging pieces is joined to the inner surfaces of the pair of flat portions at a position that crosses from one end to the other end in the width direction of the opening and opposes the other.
Non-joint in which the joining surface between at least one of the engaging pieces and the flat part can pass liquid from the internal space of the bag body part to the outside and cannot pass a solid larger than a predetermined dimension. A zippered bag having a region.   The bag with a chuck according to claim 1, wherein a joint surface between at least one of the engagement pieces and the flat portion is joined discontinuously. Between the position where the edge of the unsealed end is closed in a liquid-tight state with respect to the position where the chuck is attached, and between the position where the chuck is attached and the position where the chuck is closed in the liquid-tight state The bag body with a chuck according to claim 1 , further comprising a tear facilitating means for facilitating tearing of the main body. A gripping part comprising a seal part wider than the width of the upper edge seal part and the bottom edge seal part of the bag body part over the entire region of at least one side edge part of the bag body part, and / or the bottom of the bag body part The grip part which consists of a sealing part wider than the width | variety of the upper edge seal part of the said bag main-body part and a side edge seal part is provided in the whole region of an edge part, The Claim 1 thru | or 3 characterized by the above-mentioned. Bag with chuck. Contents of contacting with liquid is accommodated in the bag body portion, and, wherein the peripheral edge of the bag main body is closed in a liquid-tight state, according to any one of claims 1 to 4 chuck With bag body. The bag body with a chuck according to any one of claims 1 to 5, wherein the bag body portion has a bottom portion made of gusset. The step of conveying the liquid impermeable film, folding one liquid impermeable film so as to match the inner surface of the flat portion made of the liquid impermeable film, or facing two liquid impermeable films A step, a step of inserting a chuck between a pair of inner surfaces facing each other of the planar portion, a step of aligning the chuck between the inner surfaces of the planar portion, an engagement piece of the chuck and an inner surface of the planar portion Joining two or more bags at the side edges, and joining the openings to each other at a constant interval in a direction orthogonal to the joining direction of the engaging piece of the chuck and the inner surface of the flat part. A method of manufacturing a bag body with a chuck including a step of forming an intermediate product in which a chuck is disposed in the vicinity of a position, and a step of cutting a central portion of a region joined at a constant interval of the intermediate product,
In the step of joining the engagement piece of the chuck and the inner surface of the flat portion,
A method for manufacturing a bag with a chuck, wherein a heat seal bar having a step as a concave portion and a convex portion is pressed and fused from an outer surface of the flat portion.