CN216806492U - Bag - Google Patents

Abstract

The utility model belongs to the technical field of food containers and discloses a bag which comprises a bag body, wherein the bag body is provided with an opening, and a male zipper component and a female zipper component are respectively arranged on two sides of the inner wall of the opening; the male zipper assembly comprises a first male sealing strip, a second male sealing strip and a third male sealing strip which are arranged at intervals, and a first clamping portion and a second clamping portion are respectively arranged on one side, facing the second male sealing strip, of the first male sealing strip and one side, facing the second male sealing strip, of the third male sealing strip; the female zipper assembly comprises a first female sealing strip and a second female sealing strip which are arranged at intervals, and a third clamping part and a fourth clamping part are respectively arranged on the sides of the first female sealing strip and the second female sealing strip, which are deviated from each other; when the male zipper assembly is in sealing connection with the female zipper assembly, the first female sealing strip is inserted between the first male sealing strip and the second male sealing strip, the third clamping portion and the first clamping portion are clamped, the second female sealing strip is inserted between the second male sealing strip and the third male sealing strip, and the fourth clamping portion and the second clamping portion are clamped. The external force required for opening and closing the opening is small, and the use is more convenient.

Description

Bag

Technical Field

The utility model relates to the technical field of food containers, in particular to a bag.

Background

The bag is used as a container for containing articles and has wide application. For example, bags are commonly used as freshness retaining and transport packaging for food products. A zipper is arranged at the opening of part of the bag to seal the articles in the bag. However, the existing zipper has poor sealing effect, and the opening and locking operations of the zipper require great strength, which brings inconvenience to the user and causes poor use experience.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a bag, which has good sealing performance of a zipper at an opening, requires less effort for opening and locking the zipper, brings inconvenience to users and has poor use experience.

In order to realize the purpose, the following technical scheme is provided:

providing a bag, which comprises a bag body, wherein the bag body is provided with an opening, and a male zipper component and a female zipper component are respectively arranged on two sides of the inner wall of the opening;

the male zipper assembly includes:

the first male sealing strip, the second male sealing strip and the third male sealing strip are arranged at intervals, the first male sealing strip, the second male sealing strip and the third male sealing strip extend from one end of the opening to the other end of the opening, a first clamping portion is arranged on one side, facing the second male sealing strip, of the first male sealing strip, and a second clamping portion is arranged on one side, facing the second male sealing strip, of the third male sealing strip;

the female zipper assembly includes:

the first female sealing strip and the second female sealing strip are arranged at intervals, the first female sealing strip and the second female sealing strip extend from one end of the opening to the other end of the opening, and a third clamping part and a fourth clamping part are respectively arranged on the sides, deviating from each other, of the first female sealing strip and the second female sealing strip;

the positive zipper assembly with during cloudy zipper assembly sealing connection, first cloudy sealing strip inserts first positive sealing strip with between the positive sealing strip of second, just third joint portion with first joint portion joint, the cloudy sealing strip of second inserts the positive sealing strip of second with between the positive sealing strip of third, just fourth joint portion with second joint portion joint.

As an alternative of the bag of the present invention, one of the first and third clamping portions includes a first groove, and the other includes a first protrusion capable of being clamped into the first groove; and/or the presence of a gas in the gas,

in the second joint portion with in the fourth joint portion both, one includes the second recess, and another includes the second arch, the second arch can be blocked in the second recess.

As an alternative of the bag of the present invention, a side surface of the second male sealing tape away from the inner wall of the bag body is provided with a fifth fastening part;

on the inner wall of the bag body, and in first cloudy sealing strip with between the cloudy sealing strip of second, be provided with sixth joint portion, sixth joint portion can with fifth joint portion joint.

As an alternative of the bag of the present invention, the height of both ends of the first male sealing strip is gradually reduced until the top surfaces of both ends thereof are respectively stopped at the inner walls of both ends of the opening;

the heights of the two ends of the second male sealing strip are gradually reduced until the top surfaces of the two ends of the second male sealing strip are respectively cut off from the inner walls of the two ends of the opening;

the heights of the two ends of the third male sealing strip are gradually reduced until the top surfaces of the two ends of the third male sealing strip are respectively cut off from the inner walls of the two ends of the opening;

the heights of the two ends of the first female sealing strip are gradually reduced until the top surfaces of the two ends of the first female sealing strip are respectively cut off the inner walls of the two ends of the opening;

the heights of the two ends of the second female sealing strip are gradually reduced until the top surfaces of the two ends of the second female sealing strip are respectively cut off the inner walls of the two ends of the opening.

As an alternative to the bag of the present invention, both ends of the end face of the opening are lower than the middle thereof.

As an alternative to the bag of the present invention, the outer wall of the opening is provided with stiffening ribs.

As an alternative to the bag of the present invention, the reinforcing rib is provided annularly around the opening.

As an alternative to the bag of the present invention, the stiffener is located opposite the male and female zipper assemblies.

As an alternative to the bag of the present invention, the bag is made of silicone.

As an alternative to the bag of the present invention, the bag is of injection moulded one-piece construction.

The beneficial effects of the utility model are as follows:

the bag provided by the utility model comprises a bag body, wherein the bag body is provided with an opening, and a male zipper component and a female zipper component are respectively arranged on two sides of the inner wall of the opening. The bag body limits a cavity, and when the opening is opened, articles can be taken and placed into the cavity. When the male zipper component and the female zipper component are connected, the opening is sealed and closed, so that articles in the bag body can be conveniently transported or stored. Wherein, first cloudy sealing strip and first positive sealing strip joint, the joint of second cloudy sealing strip and third positive sealing strip adopt two joint structures, guarantee positive zip fastener subassembly and cloudy zip fastener subassembly's stability in connection and leakproofness. The second male sealing strip is clamped between the first female sealing strip and the second female sealing strip, and the connecting sealing performance of the male zipper assembly and the female zipper assembly is improved. The first female sealing strip is only clamped with the first male sealing strip, but not simultaneously clamped with the first male sealing strip and the second male sealing strip; meanwhile, the second female sealing strip is only clamped with the third male sealing strip, but not simultaneously clamped with the second male sealing strip and the third male sealing strip; therefore, the external force required for opening and closing the opening is smaller while the sealing performance is ensured, the use is more convenient and faster for users, and the use experience is better; in addition, when the opening is opened and closed, the sealing strip is less in deformation and longer in service life, the sealing performance after repeated use is still good, the structure of the sealing strip is simple, and the processing is convenient.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments of the present invention will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the contents of the embodiments of the present invention and the drawings without creative efforts.

FIG. 1 is a first isometric view of a bag provided by an embodiment of the present invention;

FIG. 2 is a second isometric view of a bag provided by an embodiment of the present invention;

FIG. 3 is a front view of a bag according to an embodiment of the present invention;

FIG. 4 is a side view of a bag according to an embodiment of the present invention;

FIG. 5 is a cross-sectional view of a bag provided by an embodiment of the present invention;

FIG. 6 is a schematic view of a portion of the structure of FIG. 5;

FIG. 7 is an enlarged view of a portion of FIG. 5 at A;

FIG. 8 is an enlarged view of a portion of FIG. 5 at B;

FIG. 9 is a third perspective view of a bag according to an embodiment of the present invention;

fig. 10 is a partial enlarged view at C in fig. 9.

Reference numerals:

1. a bag body; 2. a male zipper assembly; 3. a female zipper assembly; 4. reinforcing ribs;

11. an opening; 12. an end face;

21. a first male sealing strip; 22. a second male seal strip; 23. a third male seal strip;

211. a first clamping part; 231. a second clamping part;

31. a first female seal strip; 32. a second female seal;

311. a third clamping connection part; 321. and a fourth clamping part.

Detailed Description

In order to make the technical problems solved, technical solutions adopted and technical effects achieved by the present invention clearer, the technical solutions of the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Wherein the terms "first position" and "second position" are two different positions.

In the description of the present invention, it should be noted that unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection or a removable connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1 to 10, the present embodiment provides a bag, which comprises a bag body 1, wherein the bag body 1 has an opening 11, and a male zipper assembly 2 and a female zipper assembly 3 are respectively arranged on two sides of the inner wall of the opening 11. The bag body 1 defines a cavity into which articles can be accessed when the opening 11 is opened. The article may be a food or the like, and is not limited thereto. When the male and female fastener elements 2 and 3 are connected, the opening 11 is sealed and closed, so that the articles in the bag body 1 can be transported or stored.

The male zipper assembly 2 includes a first male sealing strip 21, a second male sealing strip 22 and a third male sealing strip 23 arranged at intervals. The first male seal strip 21, the second male seal strip 22 and the third male seal strip 23 each extend from one end of the opening 11 to the other end. The side of the first male weather strip 21 facing the second male weather strip 22 is provided with a first snap-in portion 211. The third male weather strip 23 is provided with a second catching portion 231 on a side thereof facing the second male weather strip 22.

The female fastener assembly 3 includes a first female sealing strip 31 and a second female sealing strip 32 arranged at a spacing. The first female seal strip 31 and the second female seal strip 32 each extend from one end of the opening 11 to the other end. The sides of the first and second female seal strips 31, 32 facing away from each other are provided with a third catching portion 311 and a fourth catching portion 321, respectively.

When the male and female fastener elements 2 and 3 are connected in a sealing manner, the first female sealing tape 31 is inserted between the first male sealing tape 21 and the second male sealing tape 22, so that the third engaging portion 311 and the first engaging portion 211 are engaged, and the second female sealing tape 32 is inserted between the second male sealing tape 22 and the third male sealing tape 23, so that the fourth engaging portion 321 and the second engaging portion 231 are engaged.

The first female sealing strip 31 is clamped with the first male sealing strip 21, the second female sealing strip 32 is clamped with the third male sealing strip 23, and two clamping structures are adopted to ensure the connection stability and the sealing performance of the male zipper assembly 2 and the female zipper assembly 3. Both sides of the second male sealing strip 22 facing the first male sealing strip 21 and the third sealing strip 23 are smooth, and the second male sealing strip 22 is not connected with the first female sealing strip 31 and the second female sealing strip 32. The second male sealing tape 22 is sandwiched between the first female sealing tape 31 and the second female sealing tape 32, and also contributes to the improvement of the joint sealability of the male fastener assembly 2 and the female fastener assembly 3. The first female sealing strip 31 is only clamped with the first male sealing strip 21, but not with the first male sealing strip 21 and the second male sealing strip 22 simultaneously; meanwhile, the second female sealing strip 32 is only clamped with the third male sealing strip 23, but not simultaneously clamped with the second male sealing strip 22 and the third male sealing strip 23; therefore, the external force required for opening and closing the opening 11 is small while the sealing performance is ensured, the use is more convenient and faster for users, and the use experience is better; in addition, when opening and closing opening 11, the deformation of sealing strip is also littleer, and life is longer, also makes the leakproofness after repetitious usage still very good, and the simple structure of sealing strip, processing is convenient.

Specifically, in this embodiment, the first male sealing strip 21, the second male sealing strip 22, the third male sealing strip 23, the first female sealing strip 31 and the second female sealing strip 32 are all convex ribs protruding from the inner wall of the bag body 1.

The first male seal strip 21, the second male seal strip 22 and the third male seal strip 23 are arranged at intervals along the longitudinal direction; the first female seal 31 and the second female seal 32 are also longitudinally spaced apart. The longitudinal direction means a direction in which the opening 11 and the bottom of the pouch body 1 face each other. The first male seal strip 21, the second male seal strip 22 and the third male seal strip 23 extend in the transverse direction; the first female seal 31 and the second female seal 32 also extend in the transverse direction. Transverse to the longitudinal direction and perpendicular to the direction in which the opening 11 opens.

The first engaging portion 211 and the third engaging portion 311 are engaged with each other along the opening direction of the opening 11, and the second engaging portion 231 and the fourth engaging portion 321 are also engaged with each other along the opening direction of the opening 11. The first catching portion 211 extends along the entire length direction of the first male weather strip 21, and the third catching portion 311 extends along the entire length direction of the first female weather strip 31, thereby ensuring the connection sealability of the first male weather strip 21 and the first female weather strip 31. Similarly, the second catching portion 231 extends along the entire length of the third male weather strip 23, and the fourth catching portion 321 extends along the entire length of the second female weather strip 32, so that the sealing property of the connection between the third male weather strip 23 and the second female weather strip 32 is ensured.

It should be noted that the first male sealing strip 21, the second male sealing strip 22, the third male sealing strip 23, the first female sealing strip 31 and the second female sealing strip 32 of the present embodiment are all a whole continuous strip-shaped convex rib. In other embodiments, the first male sealing strip 21 and the first female sealing strip 31 may be two or more segments of spaced ribs, and the second male sealing strip 22 and the second female sealing strip 32 may be a whole continuous strip rib, so as to ensure the connection sealing performance of the zipper; or, the second male sealing strip 22 and the second female sealing strip 32 are two or more sections of spaced ribs, and the first male sealing strip 21 and the first female sealing strip 31 are a whole continuous strip rib.

Alternatively, referring to fig. 10, the heights of both ends of the first male seal strip 21 are gradually reduced until the top surfaces of both ends thereof end at the inner walls of both ends of the opening 11, respectively; the heights of both ends of the first female seal strip 31 are gradually reduced until the top surfaces of both ends thereof are respectively stopped at the inner walls of both ends of the opening 11. The height refers to a height at which the first male sealing tape 21 protrudes with respect to the inner wall of the bag body 1. The top surface is the surface of the first male sealing strip 21 away from the inner wall of the bag body 11. That is, in the transverse direction, the heights of both ends of the first male and female seal tapes 21 and 31 are continuously reduced until they disappear at the end of the opening 11 to secure the connection sealability of the male and female fastener assemblies 2 and 3 at both end portions of the opening 11. Similarly, the heights of the two ends of the second male sealing strip 22 are gradually reduced until the top surfaces of the two ends are respectively cut off at the inner walls of the two ends of the opening 11; the heights of both ends of the third male seal strip 23 are gradually reduced until the top surfaces of both ends thereof are respectively cut off at the inner walls of both ends of the opening 11; the heights of both ends of the second female seal strip 32 are gradually reduced until the top surfaces of both ends thereof are respectively stopped at the inner walls of both ends of the opening 11.

Illustratively, with continued reference to fig. 10, the top surfaces of both ends of the first female seal strip 31 and the second female seal strip 32 are both arc surfaces. The top surfaces of both ends of the first male seal strip 21, the second male seal strip 22 and the third male seal strip 23 are all smooth inclined surfaces.

In this embodiment, the first clamping portion 211 includes a first groove, the first groove is recessed in a side surface of the first male sealing strip 21 facing the second male sealing strip 22, and a notch of the first groove faces the second male sealing strip 22. The third engaging portion 311 includes a first protrusion. When the first female seal strip 31 is inserted between the first male seal strip 21 and the second male seal strip 22, the first projection snaps into the first groove. The connection between the first female sealing strip 31 and the first male sealing strip 21 is realized by adopting the structure of the first protrusion and the first groove, the connection is convenient, and the structure is simple. Alternatively, the first groove may be a U-shaped groove, a V-shaped groove, a trapezoidal groove, a profiled groove, or the like, which is not limited herein.

Further, in the present embodiment, the first male weather strip 21 is a flat, long strip having an approximately rectangular cross section. The first groove is provided at the root of the first male sealing strip 21 (i.e., at the junction of the first male sealing strip 21 and the inner wall of the bag body 1), so that the connection sealing performance of the first male sealing strip 21 and the first female sealing strip 31 is better. In other embodiments, the first groove may be provided in the middle or at the end of the side of the first male seal strip 21 facing the second male seal strip 22. Similarly, the second clip portion 231 includes a second groove, and the fourth clip portion 321 includes a second protrusion; the second female sealing strip 32 is inserted between the second male sealing strip 22 and the third male sealing strip 23, and the second projection is snapped into the second groove. The shape and position of the second groove can refer to the arrangement of the first groove, and are not described herein again.

In other embodiments, the first clamping portion 211 may include a first protrusion, and the third clamping portion 311 includes a first groove; and/or, the second clamping portion 231 includes a second protrusion, and the fourth clamping portion 321 includes a second groove.

In another embodiment, a fifth clamping part is arranged on one side surface of the second male sealing strip 22 away from the inner wall of the bag body 1; a sixth clamping portion is provided on the inner wall of the bag body 1 and between the first female sealing tape 31 and the second female sealing tape 32. When the male zipper component 2 is connected with the female zipper component 3, the fifth clamping part is clamped with the sixth clamping part. On the basis that first joint portion 211 and third joint portion 311 along the opening direction joint of opening 11, second joint portion 231 and fourth joint portion 321 also along the opening direction joint of opening 11, sixth joint portion and fifth joint portion along vertical joint, further improve the joint strength and the leakproofness of positive zip fastener subassembly 2 and negative zip fastener subassembly 3.

Illustratively, in the fifth clamping part and the sixth clamping part, one is a third groove, and the other is a third protrusion.

In this embodiment, the height of the protrusion of the second male sealing strip 22 is less than or equal to the height of the first male sealing strip 21 and the third male sealing strip 23, so that the first female sealing strip 31 can be inserted into the root of the first male sealing strip 21, and the third clamping portion 311 on the first female sealing strip 31 is clamped with the first clamping portion 21 at the root of the first male sealing strip 21. In other embodiments, the second male seal strip 22 has a greater protrusion height than the first male seal strip 21 and the third male seal strip 23, respectively. In this way, when the male fastener assembly 2 and the female fastener assembly 3 are joined, the second male sealing tape 22 is first inserted between the first female sealing tape 31 and the second female sealing tape 32, and the second male sealing tape 22 guides the movement of the first female sealing tape 31 inserted between the first male sealing tape 21 and the second male sealing tape 22 and the movement of the second female sealing tape 32 inserted between the second male sealing tape 22 and the third male sealing tape 23, thereby improving the smoothness of operation. In this case, the first clamping portion 211 needs to be disposed in the middle of the side surface of the first male weatherstrip 21 facing the second male weatherstrip 22 as much as possible, so that the third clamping portion 311 on the first female weatherstrip 31 can be clamped with the first clamping portion 21 on the first male weatherstrip 21. Similarly, the second catching portion 231 is provided in the middle of the third male seal strip 23 toward the side of the second male seal strip 22, so that the fourth catching portion 321 on the second female seal strip 32 can catch with the second catching portion 231 on the third male seal strip 23.

Alternatively, both ends of the end surface 12 of the opening 11 are lower than the middle thereof. That is, the end surface 12 of the opening 11 is not a plane, and both ends of the opening 11 are lower than the middle thereof in the longitudinal direction. The middle of the opening 11 may serve as a force application part for opening, closing and extracting the bag. Illustratively, when opening the opening 11, the user slides fingers from both ends of the opening 11 toward the middle, inserts the fingers into the opening 11 to expand the opening 11, and then manually pulls the middle of the opening 11 to open the opening 11.

In this embodiment, the end surface 12 of the opening 11 is arcuate. In other embodiments, the end surface 12 of the opening 11 may also be wavy.

Optionally, the outer wall of the opening 11 is provided with stiffening ribs 4. Through setting up strengthening rib 4, increase the intensity and the leakproofness of opening 11 department, improve life to the size when making opening 11 open is bigger, and opening 11 can be stereotyped under great opening size, and the user need not manually to prop opening 11, gets to put article operation more convenient.

Optionally, the stiffener 4 is annularly wound around the outer wall of the opening 11. The annular reinforcing ribs 4 are arranged along the whole circumferential direction of the opening 11, and the strength of the opening 11 is effectively improved. In other embodiments, the reinforcing ribs 4 may be provided at intervals along the circumferential direction of the opening 11.

Optionally, the reinforcing rib 4 is opposite to the positions of the male zipper assembly 2 and the female zipper assembly 3, so that the strength of the bag body 1 where the male zipper assembly 2 and the female zipper assembly 3 are arranged is effectively enhanced, and meanwhile, the connection strength and the sealing performance of the male zipper assembly 2 and the female zipper assembly 3 are improved.

Optionally, the bag is made of a silicone material. Adopt the silica gel material to make, green is pollution-free, and the peculiar smell is little, and the sense of touch is good, is convenient for get and take.

Alternatively, the bag is an injection molded one-piece structure with high overall strength and no assembled parts.

It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the utility model. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims (10)

1. The bag is characterized by comprising a bag body (1), wherein the bag body (1) is provided with an opening (11), and a male zipper component (2) and a female zipper component (3) are respectively arranged on two sides of the inner wall of the opening (11);

the male zipper assembly (2) comprises:

the sealing structure comprises a first male sealing strip (21), a second male sealing strip (22) and a third male sealing strip (23) which are arranged at intervals, wherein the first male sealing strip (21), the second male sealing strip (22) and the third male sealing strip (23) extend from one end of the opening (11) to the other end, a first clamping portion (211) is arranged on one side, facing the second male sealing strip (22), of the first male sealing strip (21), and a second clamping portion (231) is arranged on one side, facing the second male sealing strip (22), of the third male sealing strip (23);

the female zipper assembly (3) comprises:

the first female sealing strip (31) and the second female sealing strip (32) are arranged at intervals, the first female sealing strip (31) and the second female sealing strip (32) both extend from one end of the opening (11) to the other end of the opening, and a third clamping portion (311) and a fourth clamping portion (321) are respectively arranged on one sides, deviating from each other, of the first female sealing strip (31) and the second female sealing strip (32);

male zipper assembly (2) with during cloudy zipper assembly (3) sealing connection, first cloudy sealing strip (31) insert first male sealing strip (21) with between second male sealing strip (22), just third joint portion (311) with first joint portion (211) joint, second cloudy sealing strip (32) insert second male sealing strip (22) with between third male sealing strip (23), just fourth joint portion (321) with second joint portion (231) joint.

2. The bag according to claim 1, wherein both of said first and third snapping portions (211, 311) comprise a first recess, one of which comprises a first protrusion that can snap into said first recess; and/or the presence of a gas in the atmosphere,

one of the second clamping portion (231) and the fourth clamping portion (321) comprises a second groove, the other of the second clamping portion and the fourth clamping portion comprises a second protrusion, and the second protrusion can be clamped into the second groove.

3. The bag according to claim 1, characterized in that a side of the second male sealing strip (22) away from the inner wall of the bag body (1) is provided with a fifth snapping part;

on the inner wall of the bag body (1), and in first cloudy sealing strip (31) with between second cloudy sealing strip (32), be provided with sixth joint portion, sixth joint portion can with fifth joint portion joint.

4. The bag according to claim 1,

the heights of the two ends of the first male sealing strip (21) are gradually reduced until the top surfaces of the two ends of the first male sealing strip are respectively stopped at the inner walls of the two ends of the opening (11);

the heights of the two ends of the second male sealing strip (22) are gradually reduced until the top surfaces of the two ends of the second male sealing strip are respectively stopped at the inner walls of the two ends of the opening (11);

the heights of the two ends of the third male sealing strip (23) are gradually reduced until the top surfaces of the two ends of the third male sealing strip are respectively cut off from the inner walls of the two ends of the opening (11);

the heights of the two ends of the first female sealing strip (31) are gradually reduced until the top surfaces of the two ends of the first female sealing strip are respectively stopped at the inner walls of the two ends of the opening (11);

the heights of the two ends of the second female sealing strip (32) are gradually reduced until the top surfaces of the two ends of the second female sealing strip are respectively stopped at the inner walls of the two ends of the opening (11).

5. A bag according to any of claims 1 to 4, wherein the end faces (12) of the opening (11) are lower at both ends than at the middle thereof.

6. A bag according to any of claims 1 to 4, characterized in that the outer wall of the opening (11) is provided with stiffening ribs (4).

7. A pouch as claimed in claim 6, wherein said stiffening rib (4) is provided annularly around said opening (11).

8. The bag according to claim 7 wherein said reinforcing rib (4) is opposite to the position of said male zipper assembly (2) and said female zipper assembly (3).

9. A pouch according to any of claims 1 to 4, wherein said pouch is made of silicone.

10. A pouch according to any of claims 1 to 4, wherein said pouch is of injection moulded one-piece construction.

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