摘要:
A gusset bag for packing a content comprises a bag body having a tubular structure and composed of a pair of opposing flat portions constituting front and back surface portions and two side surface portions connecting the front and back surface portions at both side edges thereof and having lines folded inward which extend along longitudinal direction of the side surface portions and along which the side surface portions are folded inward. A zipper element is mounted on inner surfaces of the flat portions at portions near the end opening of the bag body. A fused seal portion formed to and near the end opening portion of the bag body to seal the end opening portion, the fused seal portion including an end seal portion extending along an entire length of the end opening and side seal portions extending from both ends of the end seal portion along the side edges of the flat portions. The side seal portions extend beyond the portions on which the zipper element is mounted. The sealing process is carried out integrally with portions of the side surface portions, which are once inwardly folded along the folding lines and then drawn out and folded outward from the end opening of the bag body. The zipper element is mounted to the portions near the end opening between the end opening and the once folded and then drawn out side surface portions.
摘要:
A self-standing container comprises a tubular main body and a bottom-forming sheet. The main body has upper and lower end portions, which are opened. The bottom-forming sheet is joined to the periphery of the lower end portion by a fusion-bonding so as to form a self-standing container having a flat bottom. Each of the main body and the bottom-forming sheet comprises a laminate film having at least two layers. Each of the at least two layers has a thickness of from 20 &mgr;m to 120 &mgr;m.
摘要:
A bag such as gusset bag or flat bag comprises a tubular bag body having a pair of opposing flat portions constituting front and back side portions of the bag body and side portions, a zipper element mounted on inner surfaces of the exposed inner surface portions of the flat portions and the side portions, and a fused seal portion formed at an end opening portion of the bag body. The exposed inner surface portions are formed by folding outwardly portions of the flat portions and the side portions near the end opening of the bag body, for example, by cutting the bag body along the lines connecting the flat portions and the side portions of the bag body and bending the cut open portions outwardly along the predetermined base line. On the exposed inner surfaces, are mounted male and female members constituting the zipper element when mated, and after the mounting of the zipper element, the end opening is closed by engaging the male member with the female member as the zipper element and the end opening is fused to seal the end opening of the bag body and portions of the front and back portions near the cuts.
摘要:
A fastener bag includes a packaging bag formed by heat-sealing side parts of a packaging sheet in a butt seam, and a fastening device attached to the inner surface of the packaging bag. The fastening device includes a male fastening member and a female fastening member. The male fastening member is disposed on one side of the heat-sealed butt seam of the packaging bag, and the female fastening member is disposed on the other side of the heat-sealed butt seam of the packaging bag so as to be engage with the male fastening member, and a tear-facilitating means is interposed between the male and the female fastening member. The fastener bag is capable of being opened and of being reclosed, and is suitable for use on an automatic filling and packaging machine.
摘要:
A reclosable packaging bag comprises a main bag body having an opening portion and at least one heat-sealed portion; and a linear fastener provided on the opening portion of the main bag body. The linear fastener is provided along the opening portion of the main bag body by an insert injection molding so as not to extend to the heat-sealed portions. A method for manufacturing the bag comprises the three steps. First, the first and second linear fastening members are formed on a prescribed position of a sheet of film material by an insert injection molding so as to be spaced from each other. These fastening members are engageable with each other to form a linear fastener. Second, the sheet of film material is folded in two so that the fastening members can engage with each other. Third, each of opposite portions of the sheet of film material thus folded is heat-sealed to form side heat-sealed portions.
摘要:
There is provided a fastener bag capable of improving working efficiency for the filling of inner content and surely forming a bag cut-starting portion. The faster bag 1 is formed as gusset-type packaging bag, to which a fastener 10 for freely opening or closing the packaging bag is attached. The fastener 10 is composed of a male portion 11 to which a projected thread 11b is formed and a female portion 12 to which a groove 12b is formed so as to be engaged with the projected thread 11b. Base portions 11a and 12a of both the portions 11 and 12 are attached to an inner surface of one of the flat surface portions 2 or side surface portions 3 so that the projected thread 11b and the groove 12b face each other. A cut-tape 14 for separating the flat surface portion 2 into the male portion side and the female portion side is provided between the base portions 11a and 12a.
摘要:
A reclosable packaging bag comprises a main bag body having an opening portion and at least one heat-sealed portion; and a linear fastener provided on the opening portion of the main bag body. The linear fastener is provided along the opening portion of the main bag body by an insert injection molding so as not to extend to the heat-sealed portions. A method for manufacturing the bag comprises the three steps. First, the first and second linear fastening members are formed on a prescribed position of a sheet of film material by an insert injection molding so as to be spaced from each other. These fastening members are engageable with each other to form a linear fastener. Second, the sheet of film material is folded in two so that the fastening members can engage with each other. Third, each of opposite portions of the sheet of film material thus folded is heat-sealed to form side heat-sealed portions.
摘要:
A liquid container having a stable shape that is easy to fill and that enables the user to pour out liquid to the last drop into an intended target using one hand only and without spilling the liquid. An internal space of a container is defined by a front surface portion, a rear surface portion having the shape identical with the front surface portion, and a pair of gussets each connecting together each confronting edges of the front and rear surface portions. The gusset has a folded arrangement. If liquid is filled in the container, V-shape of the gusset expands to provide a three dimensional container. The gussets extend to a neck portion. By the expansion of the gussets, a spout has a sufficient open area capable of controlled pouring of the liquid therethrough. If the liquid amount in the container is reduced, the spout is automatically closed when the container is self-standing on a table.
摘要:
A gusset bag (10), having a pair of flat surface portions (11, 11) facing each other and a pair of side surface portions (12, 12) facing each other which are folded toward the inside, has a side edge sealing portion (13) in which the flat surface portion and the side surface portion are heat-sealed together at side edge portions thereof, and a folded-back portion (13c) in which all or a part of the side edge sealing portion in the width direction is folded back toward the flat surface portion or the side surface portion. The gusset bag and a spout-attached gusset bag (1) using the gusset bag have an excellent self-standing property, and causes one's hand to feel little pain even when being squeezed.
摘要:
A spout assembly for a packaging bag for improving the prevention of oxidation to an inner content and discharging such content at a desired amount. The spout assembly mounted to the bag body includes a spool to move along the axial direction of the spout assembly and an urging member having an outer peripheral surface fixed to the inner peripheral surface of the spout assembly and adapted to urge the spool toward the bag body side. A check valve allows the inner content to flow only from the bag body side toward the mouth portion side. The urging member has a seat surface for the spool and the urging member presses the spool against the seat surface to shut off the flow of the inner content, and when an inner pressure of the bag body or a suction force of the mouth reaches a predetermined value, the spool separates from the seat surface.