HK1152021B - Bag - Google Patents

Description

Bag (bag)

Technical Field

The present invention relates to a zipper-type bag including a zipper that can open or close a spout portion.

Background

Various kinds of envelope bags are known, each of which has a spout portion fitted with a zipper that can open or close the spout portion. Among them, as disclosed in a sealed bag shown in patent document 1, for example, its upper corner serves as a spout portion for easy taking out of things. The packaging bag shown in patent document 1 forms a spout portion by obliquely opening the upper corner. These pouches include a zipper on the inside of the spout outlet that is opened to open or close the spout portion.

However, in the package bag shown in patent document 1, the spout portion includes only a linear zipper. Therefore, when taking out the contents through the spout portion, it is difficult to keep the spout portion in the opened state. When the mouth portion is grasped by the fingers, the bag slips off the fingers. Accordingly, the applicant of the subject application invented a sealed bag with a spout unit as described in patent document 2.

Patent document 1: unexamined Japanese patent application laid-open No. 2002-284195.

Patent document 2: unexamined Japanese patent application laid-open No. 2005-350104.

Disclosure of Invention

Problems to be solved by the invention

The packaging bag as described in patent document 2 has a spout outlet whose opening is wider than that of the spout outlet described in patent document 2. However, the spout outlet naturally narrows once opened wider. If the contained object is solid and big substance, sometimes the contained object is difficult to take out. Maintaining a wide open position becomes a problem each time it is necessary to take out a lot of things quickly.

In addition, in the package bag described in patent document 2, a finger easily slides on the side where the spout unit is provided, which causes the package bag to slide off the finger.

In view of such circumstances, the present invention provides a bag which can maintain an open state to easily take out contents even if the contents are large, and a packaging bag does not slip off from fingers.

Means for solving the problems

In the following, the features of the invention with reference signs are described.

Features of the invention provide a bag having a bag body, a spout unit (13) and a recess (17A, 17B, 18A, 18B). The bag body has first and second sides (11c, 11d) meeting each other and a third side (11e) extending obliquely to the first and second sides (11c, 11d) and defining an opening; the spout unit (13) having a vertex (13a) projecting from the third side and defining an angle, and a zipper (15); the recessed portion (17A, 17B, 18A, 18B) is located away from the zipper (15) and is formed on at least one of the first and second sides (11c, 11 d).

Preferably, the recessed portion (17A, 17B, 18A, 18B) is adjacent to the spout unit (13).

Preferably, the recessed portion (18A, 18B) extends perpendicular to a diagonal line (L2), the diagonal line (L2) extending from the apex (13a) and bisecting the spout unit (13).

Effects of the invention

According to the invention, the bag (11) can be easily grasped by placing the fingers in the first and second recesses (17A, 17B, 18A, 18B), respectively, which facilitates the removal of the contents. Fingers grasping the first and second recessed portions (17A, 17B, 18A, 18B) grip the sealed bag inward, which widens the spout outlet (13k) of the spout unit (13) and maintains a flared open state.

Drawings

Fig. 1 is a plan view illustrating a bag according to a first embodiment.

Fig. 2 is a schematic view illustrating the opened bag.

Fig. 3 is a plan view illustrating a bag according to the second embodiment.

Reference mark

10A, 10B bag

11 bag body

13 nozzle unit

14 small projection

15 zipper

17A first recess

17B second recess

18A first recess

18B second recess

Detailed Description

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Example one

Referring to fig. 1, the bag 10A includes a bag body 11, and a spout unit 13 fixed to the bag body 11.

The bag body 11 is a planar bag having first and second planar portions 11a and 11b, which have peripheries 11a1 and 11b1 hermetically sealed from each other by heat sealing. The bag body 11 has a slanted side 11e as a third side connecting the ends of the top side 11c and the side 11d as first and second sides that meet each other.

The pouch body 11 is formed of a laminated film, which may take any form. For example, the laminate film employs a base material layer, an intermediate layer and an innermost layer laminated from the outside.

Desirably, the base material layer is a film having good printability and impact resistance, such as puncture and tensile strength. For example, the base material layer may be a single layer or a laminated layer of a biaxially oriented film or a uniaxially oriented film of polyethylene terephthalate, polypropylene, polyamide, ethylene-vinyl alcohol copolymer or the like. In order to provide the base material layer with barrier properties against oxygen and water vapor, the base material layer employs a film vapor-deposited using aluminum or an inorganic oxide like metal or silicon oxide or the like, or a film coated using polyvinylidene chloride. Paper or cellophane may be used.

Desirably, the intermediate layer is a film having the function of oxygen barrier properties, water vapor barrier properties and tear resistance properties depending on the application of the bag. For example, the intermediate layer is a metal foil of aluminum or the like; or a vapor deposited film or a coated film as described above.

Desirably, the innermost layer is a film that can be heat bonded by heat sealing. For example, the innermost layer may be a non-oriented film of high density polyethylene, low density polyethylene, linear low density polyethylene, polypropylene or the like. The innermost layer may employ a resin layer formed by extruding these resins by extrusion lamination. In addition, for bonding to the spout unit 13, the innermost layer is desirably of the same material as the spout unit 13.

These films use an adhesive, a thermal adhesive resin or the like, and are laminated together by a known method.

The bag is not limited to the body 11 of a flat bag, and may be a stand-up pouch having a bottom member or the like.

The bag 10A includes a spout unit 13 coupled to the bag body 11 and protruding from the inclined side 11e of the bag body 11. The spout unit 13 is made of polyethylene, polypropylene, or the like, and is formed by injection molding. The spout unit 13 includes two rectangular first and second sheets 13b and 13c each having an upper side 13d, a left side 13e, a right side 13f, and a lower side 13 g. The first and second sheets 13b and 13c are stacked on each other. The upper side 13d and the left side 13e form a vertex 13a, which forms the corner 10b of the bag 10A.

The spout unit 13 has a right side 13f and a lower side 13g as peripheral edges on the bag body 11. The right side 13f extends obliquely to the upper side 13 d. The lower side 13g extends obliquely to the left side 13 e. The right side 13f and the lower side 13g meet each other and form a diagonal point 13 h. A diagonal line L2 connecting apex 13a and diagonal point 13h bisects the spout unit 13.

In the spout unit 13, the first and second sheets 13b and 13c are joined together at the upper side 13d and the left side 13 e. The spout unit 13 is integrated with the bag body 11 by bonding the first and second sheets 13b and 13c to the inner surfaces of the first and second flat portions 11a and 11b of the bag body 11 by heat-sealing at the overlapped portions of the first and second sheets 13b and 13c with the bag body 11, respectively.

The spout portion 13 includes a zipper 15 located inside the pouch body 11. For example, the slide fastener 15 is bent on a diagonal line L2, and is positioned in parallel with the right side 13f and the lower side 13 g. The zipper 15 includes male and female zippers 15a and 15b which are engaged with each other. Male and female zippers 15a and 15b are integrally formed on the inner surfaces of the first and second sheets 13b and 13c, respectively. The male and female zippers 15a and 15b are engaged with each other to seal the pouch 10A.

The spout unit 13 may have a tab 14 disposed outside the bag body 11 and positioned to protrude outward. Tab 14 includes first and second tabs 14A and 14B that pass through planar portions 11a and 11B of pocket 11, respectively. Pulling the first and second tabs 14A and 14B to the outside of the bag 10A causes the male and female zippers 15a and 15B of the zipper 15 to separate from each other, which facilitates opening of the bag 10A.

The spout unit 13 may have a tear portion 13j for separating the vertex portion 13a from the tear portion coupled with the bag body 11. The tear portion 13j is located at a position overlapping the inclined edge 11e of the bag body 11. The tear portion 13j extends in a straight line perpendicular to the diagonal line L2, and reaches the upper side 13d and the left side 13 e. For example, the tear portion 13j is formed by thinning the thickness of each of the first and second sheets 13b and 13c, which facilitates tearing away the vertex portion 13a from the tear portion coupled with the bag body 11. The tear portion 13j may be formed with a so-called rough surface in which a plurality of small holes are gathered.

Note that the spout portion 13 may be formed to have cutouts as tear-off start portions of the tear portion 13j on the extension portions on the upper side 13d and the left side 13 e. They may be combined with each other.

The inner and outer surfaces of the first and second sheets 13b and 13c of the spout unit 13 may be formed between the apex 13a and the diagonal point 13h with a folding line coinciding with the diagonal line L2. For example, the folding line is formed by thinning the thickness of each of the first and second sheets 13b and 13 c. When a force is applied to the upper edge 13d and the left edge 13e of the spout unit 13 from the left and right, the first and second sheets 13b and 13c are folded on the folding line, and the folding line becomes a ridge line. That is, the fold line is such that the tear portion 13j may facilitate defining an open, open state in which the spout outlet 13k is rectangular.

The bag 10A includes U-shaped first and second recessed portions 17A and 17B located away from the spout portion 13 and formed in the top edge 11c and the side edge 11 d. The first and second recessed portions 17A and 17B are located adjacent to the right side 13f and the lower side 13 g. The first and second recessed portions 17A and 17B include first and second leg portions 17A and 17B extending inwardly and perpendicularly from the top edge 11c and the side edge 11d, and an arcuate arc portion 17c interconnecting the first and second leg portions 17A and 17B, respectively. The first leg portion 17a is closer to the right side 13f and the lower side 13g than the second leg portion 17b, respectively. In the recessed portions 17A and 17B, respective lines connecting the two leg portions 17A to each other and the two leg portions 17B to each other are preferably perpendicular to the connecting apex 13a and the diagonal point 13h, and bisect the diagonal line L2 of the spout unit. This is because when the concave portions 17A and 17B are gripped by the fingers, the force of the fingers is applied to the concave portions 17A and 17B perpendicularly to the diagonal line L2, which is advantageous in keeping the outlet 13k in the rectangular expanded open state.

The method of using the bag 10A is described next.

The first or top edge 11c of the bag body 11 and the upper edge 13d of the spout unit 13 form an open upper end of the bag 10A. From which contents are received inwardly. After the filling, the upper ends are joined by heat sealing, thereby hermetically sealing the bag 10A.

When the bag 10A is opened, the apex portion 13a of the spout unit 13, which is the corner 10b of the bag 10A, is cut off along the tear portion 13j, which forms a spout outlet 13k (refer to fig. 2). When the tabs 14A and 14B are respectively pulled outward, the engagement of the male and female zippers 15a and 15B of the zipper 15 is opened. Next, referring to fig. 2, fingers are put in the concave portions 17A and 17B and grasp the bag 10A. These fingers grip the bag 10A inward so that the spout outlet 13k of the spout unit 13 is opened in a rectangular shape and is held in an opened state that is opened wide. This prevents the bag 10A from slipping off the fingers.

The bag 10A is tilted and the contents are taken out from the opening 13 k. After removal, the male and female zippers 15a and 15b are engaged with each other so that the pouch 10A is sealed again.

Example two

Referring to fig. 3, the bag 10B has first and second recessed portions 18A and 18B, and other constituent elements are similar to those of the bag 10A according to the first embodiment.

The V-shaped first and second recessed portions 18A and 18B extend perpendicular to the connecting apex 13a and diagonal 13h and bisect a diagonal line L2 of the spout unit 13. The first and second recesses 18A and 18B have first and second leg portions 18A and 18B, respectively, extending obliquely to the top edge 11c and the side edge 11 d. First and second leg portions 18a and 18b are adjacent to each other within bag body 11. The first leg portion 18a is closer to the mouthpiece portion 13 than the second leg portion 18b is to the mouthpiece portion 13. The first leg portions 18a are parallel to a diagonal line L2 joining apex 13a and diagonal point 13 h. The second leg portions 18b are perpendicular to a diagonal line L2 joining apex 13a and diagonal point 13 h.

According to the bag 10B, fingers are inserted between the first and second leg portions 18a and 18B. When a finger applies a force to the first leg portion 18a, the force is applied by a diagonal line L2 perpendicular to the connecting apex 13a and diagonal point 13h, which is advantageous in maintaining the spout unit 13k in the rectangular, expanded, open state.

It is noted that the above-described embodiments may be varied within the scope of the object of the invention. For example, the recessed portions 17A, 17B, 18A, and 18B are not limited to the described U-shape or V-shape, and may be in any shape if they are means for maintaining the open state. As for the position, some or all of them may overlap with the mouthpiece unit 13.

The described heat sealing is not limited to heat sealing, and sealing using an adhesive or sealing by a hot-melt method may be employed. Any method may be used as long as it can be sealed.

Claims (3)

1. A bag, comprising:

a pouch having first and second sides meeting each other and a third side extending obliquely to the first and second sides and defining an opening;

a spout unit having a vertex and a zipper, the vertex protruding from the third side and defining an angle; and

a recess located away from the zipper and formed in at least one of the first and second edges.

2. The bag according to claim 1, wherein said recessed portion is adjacent to said spout unit.

3. The bag according to claim 1 or 2, wherein the recessed portion extends perpendicular to a diagonal line extending from the apex and bisecting the spout unit.