One-way air outlet channel for vacuum compression bag and vacuum compression bag having one-way air outlet channel

Abstract

A one-way air outlet channel is disposed inside a vacuum compression bag. The one-way air outlet channel includes an air inlet opening, a horizontal air channel, inclined air channel and vertical air channel and an air outlet opening in communication with one another in sequence. One end of the horizontal air channel is the air inlet opening in communication with a space inside the bag body, and the other end of the horizontal air channel is in communication with the inclined air channel. A bottom end of the vertical air channel is in communication with the air outlet opening, and a top end is in communication with the inclined air channel, such that at least two corner points are formed, at a location where the horizontal air channel connects the inclined air channel and at a location where the inclined air channel connects the vertical air channel.

Claims

1. A one-way air outlet channel, adapted for a vacuum compression bag, the vacuum compression bag having a bag body that has a split structure, the bag body of the vacuum compression bag including a front bag panel, a rear bag panel, and at least one connecting panel, wherein the at least one connecting panel is divided into a first connecting surface and a second connecting surface along a fold line, the one-way air outlet channel is made of a flexible material, is adapted to be arranged in the vacuum compression bag, and is adapted to be located between the front bag panel and the first connecting surface and/or between the rear bag panel and the second connecting surface, the one-way air outlet channel comprising an air inlet opening, a horizontal air channel, an inclined air channel, a vertical air channel, and an air outlet opening arranged in communication with one another in sequence, a length of the inclined air channel is 100 mm to 250 mm, and a length of the vertical air channel is 100 mm to 300 mm, wherein the air outlet opening in communication with the outside is adapted to be provided on the bag body of the vacuum compression bag, wherein a bottom end of the vertical air channel is in communication with the air outlet opening, and the air outlet opening is adapted to be arranged on a lateral side of the bag body close to a bottom edge or a top edge of the bag body, and wherein a top end of the vertical air channel is in communication with the inclined air channel, such that at least two corner points are formed at a location where the horizontal air channel connects to the inclined air channel and at a location where the inclined air channel connects to the vertical air channel, wherein the horizontal air channel is adapted to be arranged along the top edge or the bottom edge of the bag body, the air inlet opening is adapted to face a center of the top edge or a center of the bottom edge of the vacuum compression bag, wherein the horizontal air channel comprises a first horizontal air channel section and a second horizontal air channel section, the first horizontal air channel section and the second horizontal air channel section are parallel with each other, the air inlet opening is located at one end of the first horizontal air channel section, and the other end of the first horizontal air channel section communicates with one end of the second horizontal air channel section, and a corner point is formed between the first horizontal air channel section and the second horizontal air channel, such that the first horizontal air channel section, the corner point, and the second horizontal air channel section cooperatively form a U-shaped structure, the other end of the second horizontal air channel section communicates with the inclined air channel, a length of the first horizontal air channel is 40 mm to 150 mm, and a length of the second horizontal air channel is 40 mm to 150 mm.

2. The one-way air outlet channel according to claim 1, wherein the one-way air outlet channel is adapted to be formed by pressing the front bag panel and the first connecting surface and/or pressing the rear bag panel and the second connecting surface.

3. The one-way air outlet channel according to claim 1, wherein the one-way air outlet channel is adapted to be arranged at a corner of the vacuum compression bag.

4. The one-way air outlet channel according to claim 1, wherein the inclined air channel is a straight inclined air channel or an arc inclined air channel.

5. The one-way air outlet channel according to claim 1, wherein diameters of the air inlet opening, the horizontal air channel, the inclined air channel, the vertical air channel and the air outlet opening are 20 to 60 mm.

6. The one-way air outlet channel according to claim 1, wherein an obtuse angle is formed between the inclined air channel and the lateral side of the bag body, and the obtuse angle ranges from 120° to 160°.

7. A vacuum compression bag, comprising the one-way air outlet channel according to claim 1, wherein: the connecting panel is a bottom bag panel, two lateral sides of the first connecting surface are respectively pressed against a lower end section of two lateral sides of the front bag panel to form first lower lateral sides; two lateral sides of the second connecting surface are respectively pressed against a lower end section of two lateral sides of the rear bag panel to form second lower lateral sides; remaining portions of the two lateral sides of the front bag panel and remaining portions of the two lateral sides of the rear bag panel are pressed against each other to form third lateral sides, the first lower lateral sides, the second lower lateral sides and the third lateral sides together form respective lateral sides of the bag body; a bag opening is formed at an upper end of the bag body or formed by a top edge of the front bag panel and a top edge of the rear bag panel; and the one-way air outlet channel is provided in the bag body.

8. The vacuum compression bag according to claim 7, wherein the bag body further includes a top bag panel, which forms a split structure with an upper part of the bag body, the top bag panel is divided into a first top surface and a second top surface along a fold line, an outer edge of the second top surface parallel to the fold line is pressed against the top edge of the rear bag panel to form a first top edge, the bag opening is formed between an outer edge of the first top surface parallel to the fold line and the top edge of the front bag panel; two lateral sides of the first top surface are respectively pressed against upper sections at the two lateral sides of the front bag panel to form first upper lateral sides, two lateral sides of the second top surface are respectively pressed against upper sections at the two lateral sides of the rear bag panel to form second upper lateral sides, the remaining portions of the two lateral sides of the front bag panel and the remaining portions of the two lateral sides of the rear front panel are pressed against each other to form the third lateral sides, the third lateral sides extend from the first lower lateral sides and the second lower lateral sides to the first upper lateral sides and the second upper lateral sides.

9. The vacuum compression bag according to claim 8, wherein a top surface of the top bag panel is provided with an interposing layer, and an accommodating space is formed between the interposing layer and the top surface of the top bag panel for a hard press plate to be movably inserted therein.

10. The vacuum compression bag according to claim 7, wherein the bottom bag panel is divided into a first bottom surface serving as the first connecting surface and a second bottom surface serving as the second connecting surface along the fold line, an outer edge of the first bottom surface parallel to the fold line is pressed against the bottom edge of the front bag panel to form a first bottom edge, an outer edge of the second bottom surface parallel to the fold line is pressed against the bottom edge of the rear bag panel to form a second bottom edge.

11. The vacuum compression bag according to claim 10, wherein each of the first lower lateral sides and a respective one of the second lower lateral sides are pressed together to form a reinforced lateral side.

12. The vacuum compression bag according to claim 10, wherein the one-way air outlet channel is provided at each of the four corners of the vacuum compression bag formed between the first bottom surface and the front bag panel, and between the second bottom surface and the rear bag panel.

13. The vacuum compression bag according to claim 7, wherein an obtuse angle is formed between the inclined air channel of the one-way air outlet channel and the lateral side of the bag body, the one-way air outlet channel is provided with a tear-proof arc-shaped hot press block arranged at a position where the obtuse angle forms.

14. The vacuum compression bag according to claim 13, wherein a junction is formed among the first lateral side, the second lateral side and the third lateral side, a distance between a horizontal tangent of the arc-shaped hot press block and the junction ranges from 5 to 20 mm; the first lateral side is the first upper lateral side or the first lower lateral side; the second lateral side is the second upper lateral side or the second lower lateral side.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) The invention will be further explained through the accompanying drawings.

(2) FIG. 1 is a three-dimensional schematic view of a conventional vacuum compression bag with a split structure.

(3) FIG. 2 is a schematic exploded view of a conventional vacuum compression bag with a split structure.

(4) FIG. 3 is a front view of the vacuum plastic bag with one-way air outlet channel in embodiment 1.

(5) FIG. 4 is a front view of the vacuum plastic bag with one-way air outlet channel in embodiment 2.

(6) FIG. 5 is a first front view of the vacuum plastic bag with one-way air outlet channel in embodiment 3.

(7) FIG. 6 is a second front view of the vacuum plastic bag with one-way air outlet channel in embodiment 3.

(8) FIG. 7 is a front view of the vacuum plastic bag with one-way air outlet channel in embodiment 4.

(9) FIG. 8 is a perspective view of the vacuum plastic bag with one-way air outlet channel in embodiment 5.

(10) FIG. 9 is a partial enlarged view of part I in FIG. 8.

(11) FIG. 10 is a perspective view of the vacuum plastic bag with one-way air outlet channel in embodiment 6.

(12) FIG. 11 is a perspective view of the vacuum plastic bag with one-way air outlet channel in embodiment 7.

(13) FIG. 12 to FIG. 16 are front views of the vacuum plastic bag with one-way air outlet channel in comparative examples 1 to 5.

DESCRIPTION OF THE EMBODIMENTS

(14) The invention will be further described by specific embodiments below.

Embodiment 1

(15) As shown in FIG. 3, the one-way air outlet channel 6 is arranged in a vacuum compression bag. The one-way air outlet channel 6 includes a horizontal air channel 61, an inclined air channel 62, and a vertical air channel 63 that are in communication in sequence. A first corner point is formed at the position where the horizontal air channel 61 and the inclined air channel 62 are connected. A second corner point is formed at the position where the inclined air channel 62 is connected with the top end of the vertical air channel 63. An air inlet opening 60 is provided at one end of the horizontal air channel 61 away from the inclined air channel 62. An air outlet opening 64 is provided on the bag body of the vacuum compression bag. The bottom end of the vertical air channel 63 is in communication with the air outlet opening 64.

(16) The vacuum compression bag is a vacuum compression bag with a split structure on a bag body, and the split structure is located at the bottom portion of the bag body. The bag body of the vacuum compression bag includes a front bag panel 1, a rear bag panel 2 and a bottom bag panel 3. The bottom bag panel 3 is divided into a first bottom surface 31 and a second bottom surface 32 by a fold line. The two lateral sides of the first bottom surface 31 are pressed against the lower sections at the two lateral sides of the front bag panel 1 to form a first lower lateral side. The two lateral sides of the second bottom surface 32 are pressed against the lower sections at the two lateral sides of the rear bag panel 2 to form a second lower lateral side. The remaining portions of the two lateral sides of the front bag panel 1 and the remaining portions of the two lateral sides of the rear bag panel 2 are pressed against each other to form the third lateral side. The first lower lateral side, the second lower lateral side and the third lateral side together constitute the lateral side of the vacuum compression bag.

(17) A bag opening is formed between the top side of the front bag panel 1 and the top side of the rear bag panel 2. The bag opening is further provided with a buckle mechanism 5 for sealing the bag opening.

(18) Two one-way air outlet channels 6 are pressed between the front bag panel 1 and the first bottom surface 31, and are separately located on the left and right sides of the vacuum plastic bag. The horizontal air channel 61 is closely attached to the bottom of the bag body, and the vertical air channel 63 is closely attached to the first lower lateral side. An obtuse angle α is formed between the inclined air channel 62 and the third lateral side, and the angle α is 120° to 160°. The air inlet opening 60 faces the center of the bottom of the bag body, and the air outlet opening 64 is provided at the bottom of the first lower lateral side. When in use, after putting the object into the vacuum compression bag, the bag opening is sealed by the buckle mechanism 5, and then the bag body of the vacuum compression bag is squeezed, so that the air in the bag body can be expelled to the outside through the one-way air outlet channel 6. The channel wall of the one-way air outlet channel 6 is a flexible bag wall. When air is expelled from the vacuum compression bag, the one-way air outlet channel 6 is flattened under the effect of atmosphere pressure, so that the one-way air outlet channel 6 is blocked, so as to realize the sealing of the bag body. If air from the outside flows back into the bag body through the one-way air outlet channel 6, the first corner point and the second corner point of the one-way air outlet channel 6 force the air to change the flowing direction twice, thereby forming a huge resistance.

(19) In the process of squeezing, the air in the bag body is largely distributed at the center of the bottom of the bag body. Therefore, by arranging the air inlet opening 60 to face the center of the bottom of the vacuum compression bag, the air in the bag body can be expelled to the outside more quickly.

Embodiment 2

(20) As shown in FIG. 4, the difference between the embodiment 2 and the embodiment 1 is as follows.

(21) The one-way air outlet channel 6 is further provided with an arc-shaped hot press block 7, which is specifically located at the position where the obtuse angle α is formed between the inclined air channel 62 and the third lateral side, such that the arc-shaped hot press block 7 can be used to disperse the stress concentrated here in the process of pressing and expelling air.

(22) A junction A is formed between the first lateral side, the second lateral side and the third lateral side. The distance between the horizontal tangent of the arc-shaped hot press block 7 and the junction A is d, and d ranges from 5 to 20 mm. With the distance within this range, a good tear-proof effect can be achieved.

Embodiment 3

(23) As shown in FIG. 5, the difference between the embodiment 3 and the embodiment 2 is as follows.

(24) The horizontal air channel 61 includes a first horizontal air channel 611 and a second horizontal air channel 612. The first horizontal air channel 611 and the second horizontal air channel 612 are in communication with each other. A corner point is formed between the first horizontal air channel 611 and the second horizontal air channel 612, so that the horizontal air channel 61 forms a U-shaped structure. The air inlet opening 60 is located at one end of the first horizontal air channel 611 away from the second horizontal air channel 612, and one end of the second horizontal air channel 612 away from the first horizontal air channel 611 is in communication with the inclined air channel 62.

(25) With the one-way air outlet channel 6 designed in this way, the number of corner points increases from two to four. The air from the outside must change flowing direction four times in order to pass through the one-way air outlet channel 6 to return to the bag body. In this way, the resistance is further increased, and airtightness is improved.

(26) As shown in FIG. 6, a length of the first horizontal air channel 611 and a length of the second horizontal air channel 612 are both L1, and L1 ranges from 40 to 150 mm. A length of the inclined air channel 62 is L2, and L2 ranges from 100 to 250 mm. A length of the vertical air channel 63 is L3, and L3 ranges from 100 to 300 mm. The lengths within this range allow the one-way air outlet channel 6 to have a sufficient length and thus it is more difficult for the air to flow back, which further improves the airtightness of the vacuum compression bag.

(27) The diameters of the air inlet opening 60, the horizontal air channel 61, the inclined air channel 62, the vertical air channel 63 and the air outlet opening 64 range from 20 to 60 mm. The diameters within this range can make the one-way air outlet channel 6 to achieve an ideal air-expelling effect.

Embodiment 4

(28) As shown in FIG. 7, the difference between embodiment 4 and embodiment 3 is as follows.

(29) The inclined air channel 62 is an arc-shaped air channel.

(30) Either the linear inclined air channel 62 in the embodiment 2 and the embodiment 3 or the linear inclined air channel 62 in the embodiment 4 can achieve a good sealing effect.

Embodiment 5

(31) A shown in FIG. 8 and FIG. 9, the difference between the embodiment 5 and the embodiment 3 is as follows.

(32) Four one-way air outlet channels 6 are provided in the vacuum compression bag. Two of the one-way air outlet channels 6 are provided between the front bag panel 1 and the first bottom surface 31. The vertical air channels 63 of the two one-way air outlet channels 6 are respectively closely attached to the first lower lateral side 81 on the left and right sides, and each of the vertical air channels 63 is close to the junction A formed by the first lower lateral side 81, the second lower lateral side 82 and the third lateral side 83. The other two of the one-way air outlet channels 6 are arranged between the rear bag panel 2 and the second bottom surface 32. The vertical air channels 63 of the two one-way air outlet channels 6 are respectively closely attached to the second lower lateral side 82 on the left and right sides, and each of the vertical air channels 63 is close to the junction A formed by the first lower lateral side 81, the second lower lateral side 82 and the third lateral side 83. That is, a one-way air outlet channel 6 is provided at each of the four corners of the vacuum compression bag formed between the first bottom surface 31 and the front bag panel 1, and between the second bottom surface 32 and the rear bag panel 2.

Embodiment 6

(33) As shown in FIG. 10, the difference between the embodiment 6 and the embodiment 5 is as follows.

(34) The vacuum compression bag has a split structure at the top and bottom. In addition to the front bag panel 1, the rear bag panel 2 and the bottom bag panel 3, the bag body further includes a top bag panel 9. The top bag panel 9 is divided into a first top surface 91 and a second top surface 92 along a fold line. The two lateral sides of the first top surface 91 are respectively pressed against the upper sections of two lateral sides of the front bag panel 1 to form a first upper lateral side 84. The two lateral sides of the second top surface 92 are respectively pressed against the upper sections of the two lateral sides of the rear bag panel 2 to form a second upper lateral side 85. A bag opening is formed between the outer edge of the first top surface 91 and the top edge of the front bag panel 1, and a buckle mechanism 5 is arranged at the bag opening.

(35) The third lateral side 83 is the remaining portions of the two lateral sides of the front bag panel 1 and the rear bag panel 2. The junction A1 is formed by the first lower lateral side 81, the second lower lateral side 82 and the third lateral side 83. The junction A2 is formed by the first upper lateral side 84, the second upper lateral side 85 and the third lateral side 83.

Embodiment 7

(36) As shown in FIG. 11, the difference between the embodiment 7 and the embodiment 6 is as follows.

(37) The first lower lateral side 81 and the second lower lateral side 82 are pressed together to form a reinforced lateral side 86.

Comparative Examples 1-5

(38) As shown in FIG. 12 to FIG. 16, the bag body in comparative examples 1-5 is the same as embodiment 1 and embodiment 3, but the structure of the air outlet channel is different.

(39) As shown in FIG. 12, the one-way air outlet channel in comparative example 1 includes horizontal air channels that are in communication in sequence and two inclined air channels with different inclination angles. The air inlet opening is located at one end of the horizontal air channel, and the air outlet opening is located at the terminal end of the second inclined air channel.

(40) As shown in FIG. 13, the one-way air outlet channel in comparative example 2 includes three vertical air channels arranged side by side, forming three U-shaped structures.

(41) As shown in FIG. 14, the one-way air outlet channel in comparative example 3 includes a horizontal air channel and a vertical air channel that are perpendicular to each other.

(42) As shown in FIG. 15, the one-way air outlet channel in comparative example 4 includes a plurality of inclined channels arranged side by side, and adjacent inclined channels form a U-shaped structure.

(43) As shown in FIG. 16, the one-way air outlet channel in comparative example 5 includes a horizontal air channel, and the air inlet opening and the air outlet opening are respectively located at both ends of the horizontal air channel.

(44) Vacuum sealing effect tests were performed on embodiments 1 to 7 and comparative examples 1 to 5. The bag opening was sealed by the buckle mechanism after the objects were placed in the bag body, and the bag body was squeezed to expel the air in the bag body to the outside, so that the inside of the bag body is in a vacuum state. Then the vacuum compression bag in the vacuum state was kept for 30 days (in accordance with the standard procedure for a vacuum compression bag, the minimum requirement of airtightness is that there is no air leakage for 30 days under the sealing state). Then, the day when the air leakage start to occur was recorded.

(45) The experiment results are as follows.

(46) TABLE-US-00001 Embodiment Embodiment Embodiment Embodiment Embodiment Embodiment Embodiment 1 2 3 4 5 6 7 Experiment No air No air No air No air No air No air No air Result leakage in leakage in leakage in leakage in leakage in leakage in leakage in 30 days 30 days 30 days 30 days 30 days 30 days 30 days Comparative Comparative Comparative Comparative Comparative example 1 example 2 example 3 example 4 example 5 Experiment No air No air No air No air No air result leakage in leakage in leakage in leakage in leakage in 1 day 3 days 1 day 2 days 30 days

(47) It can be seen from the experiment results in the above table that the one-way air outlet channel with the structure of comparative examples 1 to 4 start to have air leakage within only 1 to 3 days. Such one-way air outlet channel has unsatisfactory sealing effect and is unable to achieve the requirement for vacuum compression bag. For comparative example 5, although there is no air leakage within 30 days, it occupies a relatively large space in the bag body, which is unsatisfactory for use.

(48) In embodiments 1 to 7, no air leakage occurred within 30 days, and the space in the bag body occupied by the one-way air outlet channel is small, which can well meet the requirement of use.

(49) It should be pointed out that the above-mentioned embodiments are only a further description of the invention, rather than a limitation. Any adjustment or change within the meaning and scope equivalent to the technical solution of the invention by those skilled in the art should be considered as involved in the scope of the invention.