Compression bag

Abstract

The utility model relates to the technical field of vacuum compression bags, and provides a compression bag which comprises a bag cylinder, a sealing strip and a one-way valve, the two sides of the bag cylinder are folded inwards to form lamination parts, the part between the lamination parts forms a bag piece, the two ends of the bag cylinder are sealed, the edge of at least one end of the bag cylinder is sealed in a hot pressing mode, and a strip-shaped hole and a valve hole are formed in the bag cylinder. The sealing strip is fixedly arranged in the strip-shaped hole, and the one-way valve is fixedly arranged in the valve hole and can be in one-way conduction from inside to outside. According to the compression bag, the lamination portions used for changing the volume in a telescopic mode and the bag pieces connected between the lamination portions on the two sides of the compression bag are all obtained by folding different portions of the bag cylinder, the opening is only formed in the end portion of the bag cylinder before the bag cylinder is sealed, and therefore the lamination edges are only formed at the end portion of the compression bag after the bag cylinder is sealed, and the air tightness of the compression bag can be effectively improved; the edges of the bag barrels are connected in a sealed mode through the hot-pressing technology to form the folded edges, the air tightness of the compression bag is further guaranteed, and the clothes storage efficiency and the moisture-proof, mildew-proof and peculiar smell-proof effects of the compression bag are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of vacuum compression bags, in particular to a compression bag. Background Art

[0002] A vacuum compression bag is a storage bag that can naturally compress objects inside the bag under the action of atmospheric pressure by extracting the air inside the bag. In daily life, it is mainly used for storing household clothing and bedding, travel clothing, etc. It can be used to store quilts, cotton-padded clothes, pillows, blankets, towels and other highly compressible items. It can not only save storage space, but also prevent moisture, mildew and odor, and prevent the growth of bacteria and mites.

[0003] However, when the existing vacuum compression bags are in use, leaks often occur at the corners of the bag body, causing the inside of the vacuum compression bag to be connected to the outside and inflated, which can easily cause the clothes stored in the vacuum compression bag to mold, making the compression function of the vacuum compression bag ineffective, and the bag body expanding and occupying more space.

[0004] Therefore, how to provide a vacuum compression bag with good sealing performance has become a technical problem to be solved urgently in this field. Utility Model Content

[0005] The utility model aims to solve one of the technical problems in the related art to a certain extent. To this end, the utility model provides a compression bag, which has good sealing performance, can improve storage efficiency and prevent clothes from getting moldy.

[0006] To achieve the above-mentioned purpose, the utility model provides a compression bag, which includes a bag tube, a sealing strip and a one-way valve, the two sides of the bag tube are folded inward to form a laminated portion, and the portion between the laminated portions forms a bag sheet, the two ends of the bag tube are sealed, and the edge of at least one end of the bag tube is heat-pressed and sealed, the bag tube is provided with a strip hole and a valve hole, the sealing strip is fixedly arranged in the strip hole and can selectively open or seal the strip hole, the one-way valve is fixedly arranged in the valve hole, and the one-way valve can be unidirectionally conducted from the inside to the outside to allow the fluid (for example, may include gas) in the compression bag to be discharged outward through the valve hole.

[0007] Optionally, the edges at both ends of the bag tube are heat-pressed and sealed, or the edge of the first end of the bag tube is heat-pressed and sealed, and a bag bottom sheet is provided at the second end of the bag tube, and the four sides of the bag bottom sheet are respectively heat-pressed and connected to the corresponding bag sheet and the laminated part to seal the second end of the bag tube.

[0008] Optionally, the strip-shaped hole and the valve hole are both arranged on the bag sheet.

[0009] Optionally, the laminated portion includes a pair of laminates stacked between the bag sheets, and at one end of the bag tube edge that is heat-pressed and sealed, the edges of the laminates corresponding to the end of the bag tube are heat-pressed connected to the edges of the adjacent bag sheets, and the edges of the bag sheet ends located between the laminated portions are heat-pressed connected to each other; at one end of the bag tube where the bag bottom sheet is arranged, the edges of the laminate ends are heat-pressed connected to the edges of the bag bottom sheet.

[0010] Optionally, the laminates of at least one of the laminated parts are connected to each other by heat compression at at least one side edge corresponding to the end of the bag tube.

[0011] Optionally, a visual window is provided on the bag sheet, and the light transmittance of the bag tube in the visual window area is higher than the light transmittance of the bag tube in other areas.

[0012] Optionally, the visible window is located on the bag sheet, and the visible window extends from the laminated portion on one side of the bag tube to the laminated portion on the other side of the bag tube.

[0013] Optionally, the viewing window is arranged around the bag tube.

[0014] Optionally, the visible window is located on the bag sheet, and the visible window extends from one end of the bag tube to the other end of the bag tube.

[0015] Optionally, the sealing strip and the one-way valve are both arranged on the same bag sheet as the visible window, and are respectively located on both sides of the visible window.

[0016] Optionally, an extension direction of the sealing strip is parallel to an extension direction of the visible window.

[0017] Optionally, the one-way valve is located at the center of an area on one side of the bag sheet corresponding to the visible window.

[0018] Optionally, the bag sheet includes a light-transmitting sheet and connecting sheets connected to two sides of the light-transmitting sheet, and a portion of the light-transmitting sheet that is not overlapped with the connecting sheets is formed as the visible window.

[0019] Optionally, the light transmittance of the light-transmitting sheet is not less than 30%.

[0020] Optionally, a dimension of the compression bag in a width direction extending along the folded edge is 150 mm to 500 mm.

[0021] Optionally, a dimension of the compression bag along the width direction is 220 mm to 430 mm.

[0022] Optionally, the dimension of the compression bag along the length direction is 200 mm to 800 mm.

[0023] Optionally, the dimension of the compression bag along the length direction is 370 mm to 670 mm.

[0024] Optionally, a dimension of the visible window along the width direction is 60 mm to 300 mm.

[0025] Optionally, a dimension of the visible window along the width direction is 85 mm to 180 mm.

[0026] Optionally, the width of the lamination is 20 mm to 90 mm.

[0027] Optionally, the width of the lamination is 45 mm to 75 mm.

[0028] Optionally, the sealing strip extends in a direction from one end of the bag tube to the other end of the bag tube or along the edge of the end of the bag tube, and a force hole is provided on the folded edge at the end of the bag tube. The force hole penetrates the folded edge in the thickness direction, and the position of the force hole corresponds to the end position of the sealing strip.

[0029] Optionally, the sealing strip includes a zipper, the zipper includes a slider, a first tooth group and a second tooth group, the first tooth group includes a plurality of first zipper teeth, the second tooth group includes a plurality of second zipper teeth, the first tooth group and the second tooth group are respectively fixed on two side edges of the strip hole and distributed along the extension direction of the strip hole, and the slider is used to move along the strip hole and to make the first tooth group and the second tooth group engage or open.

[0030] Optionally, the zipper further includes a first connecting piece and a second connecting piece, the first tooth group is fixedly arranged on the first connecting piece, the second tooth group is fixedly arranged on the second connecting piece, and the outer edges of the first connecting piece and the second connecting piece are respectively hot-pressed connected to the two side edges of the strip hole.

[0031] Optionally, the bag tube is made of thermoplastic plastic.

[0032] Optionally, a folded edge reinforcement portion is further provided on the folded edge, the folded edge reinforcement portion is coated on the folded edge, and the force application hole penetrates the folded edge reinforcement portion and the folded edge along the thickness direction.

[0033] Optionally, the force-applying hole is located at a corner of the bag tube, and the shape of the force-applying hole is a triangle, an approximate triangle, a trapezoid, or an approximate trapezoid.

[0034] Optionally, the shape of the folded edge reinforcement portion corresponds to the shape of the force application hole.

[0035] Optionally, the folded edge reinforcement portion is connected to the folded edge by hot pressing.

[0036] Optionally, the material of the folded edge reinforcement portion is consistent with the material of the lamination.

[0037] Optionally, the folded edge reinforcement portion is made of rubber.

[0038] Optionally, the bag sheet and the laminate have a thickness of 0.3 mm to 0.8 mm.

[0039] Preferably, the bag sheet and the laminate have a thickness of 0.4 mm to 0.5 mm.

[0040] Preferably, the thickness of the bag sheet and the laminate is 0.45 mm.

[0041] Optionally, the thickness of the folded edge reinforcement portion is 0.1 mm to 0.3 mm.

[0042] Preferably, the thickness of the folded edge reinforcement portion is 0.2 mm.

[0043] Optionally, the one-way valve includes a valve body, a sealing cover and a flexible connecting portion. The valve body is fixedly arranged in the valve hole and can conduct one-way electricity from the inside to the outside. The sealing cover is connected to the valve body through the flexible connecting portion, and the sealing cover can seal the air outlet of the valve body.

[0044] Optionally, the valve body includes a valve seat and a valve plate, the valve seat is fixedly arranged in the valve hole and an air outlet cavity is formed in the valve seat, the top of the air outlet cavity is formed with the air outlet, the bottom of the air outlet cavity is formed with a connecting hole for circulation with the interior of the bag tube, the valve plate is movably arranged in the air outlet cavity, and can seal the connecting hole under the action of air pressure outside the bag tube.

[0045] Optionally, the sealing cover has a gripping portion on a side away from the flexible connecting portion, and the gripping portion extends in a direction away from the flexible connecting portion.

[0046] In the utility model, the two sides of the compression bag have a laminated part folded inwardly, so that the laminated part can be extended and retracted to provide a flexible storage space for clothes in the bag. In addition, a sealing strip is fixedly arranged on the compression bag, which can be selectively opened to take out clothes, or the strip-shaped hole is sealed to prevent the external gas from entering the compression bag. The one-way valve can be unidirectional from the inside to the outside to achieve outward air extraction, and after the air is extracted, the external gas is prevented from entering the compression bag, so as to maintain the low pressure state inside the compression bag.

[0047] Furthermore, the bag body of the compression bag is a cylindrical structure before the two ends are sealed, and the laminated parts on both sides for expanding and contracting to change the volume and the bag sheets connected between the laminated parts are obtained by folding different parts of the same bag tube, and the bag tube has openings only at the two ends, so that only overlapping edges are formed at the ends after sealing, which can effectively improve the air tightness of the compression bag compared with the design of the spliced ​​bag body in the related art. In addition, the edge of at least one end of the bag tube is sealed and connected by a hot pressing process to form an overlapping edge, which avoids the problems of degumming, water seepage, air leakage, etc. in the viscose solution, further ensures the air tightness of the compression bag, and then ensures the clothing storage efficiency and moisture-proof, mildew-proof, and odor-proof effects of the compression bag product. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] The utility model is further described below in conjunction with the accompanying drawings:

[0049] Figure 1 This is a front structural schematic diagram of a compression bag provided by an embodiment of the utility model;

[0050] Figure 2 It is a structural schematic diagram of a compression bag provided by an embodiment of the utility model;

[0051] Figure 3 yes Figure 2 Schematic diagram of the structure after a certain amount of gas is filled into the middle compression bag;

[0052] Figure 4 yes Figure 3 Schematic diagram of the structure after the middle compression bag is filled with more gas;

[0053] Figure 5 It is a front structural schematic diagram of a compression bag provided by another embodiment of the utility model;

[0054] Figure 6 It is a front structural schematic diagram of a compression bag provided by another embodiment of the utility model;

[0055] Figure 7 This is a front structural schematic diagram of a compression bag provided by an embodiment of the utility model;

[0056] Figure 8 yes Figure 7 A schematic diagram of the three-dimensional structure of the compression bag after inflation;

[0057] Fig. 9 This is a front structural schematic diagram of a compression bag provided by an embodiment of the utility model;

[0058] Fig.10 yes Fig. 9 A schematic diagram of the three-dimensional structure of the compression bag after inflation;

[0059] Fig.11This is a front structural schematic diagram of a compression bag provided by an embodiment of the utility model;

[0060] Fig.12 yes Fig.11 A schematic diagram of the three-dimensional structure of the compression bag after inflation;

[0061] Fig.13 It is a schematic diagram of the principle of the cutting step in the manufacturing process of the compression bag provided by the embodiment of the utility model;

[0062] Figures 14 to 19 This is a schematic diagram of the manufacturing process of the compression bag provided by the embodiment of the utility model;

[0063] Fig. 20 It is a partial structural schematic diagram of a compression bag provided by an embodiment of the utility model;

[0064] Fig.21 It is a structural schematic diagram of a compression bag provided by another embodiment of the utility model;

[0065] Fig. 22 It is a structural schematic diagram of a compression bag provided by another embodiment of the utility model;

[0066] Fig.23 It is a structural schematic diagram of a compression bag provided by another embodiment of the utility model;

[0067] Fig.24 It is a structural schematic diagram of a compression bag provided by another embodiment of the utility model;

[0068] Fig.25 It is a structural schematic diagram of a compression bag provided by another embodiment of the utility model.

[0069] Description of reference numerals:

[0070] 100: bag tube; 110: bag sheet; 111: light-transmitting sheet; 112: connecting sheet; 120: laminated part; 121: laminated sheet; 130: folded edge; 200: sealing strip; 210: pull head; 220: first tooth group; 230: second tooth group; 240: first connecting sheet; 250: second connecting sheet; 300: one-way valve; 310: valve body; 320: sealing cover; 321: holding part; 330: flexible connecting part; 400: visual window; 510: force application hole; 520: folded edge reinforcement part; 10: sheet; 11: strip hole; 12: valve hole. DETAILED DESCRIPTION

[0071] The following is a detailed description of embodiments of the present invention, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments in the implementation manner are intended to be used to explain the present invention and should not be construed as limiting the present invention.

[0072] References to "one embodiment" or "an example" or "an example" in this specification mean that a particular feature, structure, or characteristic described in conjunction with the embodiment itself may be included in at least one embodiment disclosed in the present utility model. The appearance of the phrase "in one embodiment" in various places in the specification does not necessarily refer to the same embodiment.

[0073] In the related art, vacuum compression bags are usually polyhedral structures. When they are made, multiple sheets are generally spliced ​​together to form multiple side walls of the bag body, and adhesive materials are used to seal the seams between the side walls. Therefore, there are many splicing seams on the existing vacuum compression bags, and there are also many potential risk points for air leakage. It is very easy to break during use, resulting in air leakage and failure.

[0074] In order to solve the above technical problems, the utility model provides a compression bag, such as Figures 1 to 12 , Figure 21 to Figure 25 As shown, the compression bag includes a bag tube 100, a sealing strip 200 and a one-way valve 300. Both sides of the bag tube 100 are folded inward to form a laminated portion 120, and the portion between the laminated portions 120 forms a bag sheet 110. Both ends of the bag tube 100 are sealed, and the edge of at least one end of the bag tube 100 is heat-pressed and sealed. The bag tube 100 is provided with a strip hole and a valve hole. The sealing strip 200 is fixedly arranged in the strip hole and can selectively open or close the sealing strip 200. The one-way valve 300 is fixedly arranged in the valve hole, and the one-way valve 300 can be unidirectionally conducted from the inside to the outside to allow the fluid (for example, gas) in the compression bag to be discharged outward through the valve hole.

[0075] It is understandable that the laminated portion 120 formed by folding inwardly on both sides of the bag tube 100 can be stretched out when there are more clothes in the bag, so as to generate more storage space between the upper and lower bag sheets 110. Specifically, in an idle state, such as Figure 2 As shown, the laminated portion 120 is completely folded and stored between the bag sheets 110. At this time, the front view of the compression bag is as shown in FIG. Figure 1 As shown; after stuffing clothes into the compression bag, Figure 3 As shown, the upper and lower bag sheets 110 are stretched open by the clothes in the middle, and the laminated portion 120 connected to the edges of the bag sheets 110 is also stretched open; after a sufficient amount of clothes are stuffed into the compression bag, as shown in FIG. Figure 4 As shown, the stacked portion 120 is stretched straight, and the distance between the bag sheets 110 is stretched to the maximum, thereby providing sufficient storage space for clothes.

[0076] In the present invention, the two sides of the compression bag have a laminated portion 120 folded inwardly, so that a flexible storage space can be provided for clothes in the bag by means of the expansion and contraction of the laminated portion 120. In addition, a sealing strip 200 is fixedly arranged on the compression bag, which can be selectively opened to take out clothes, or the strip-shaped hole can be sealed to prevent the external gas from entering the compression bag. The one-way valve 300 can be unidirectionally conducted from the inside to the outside to realize the outward exhaust, and after the exhaust, the external gas is prevented from entering the compression bag, so as to maintain the low pressure state inside the compression bag.

[0077] Moreover, the bag body of the compression bag is a cylindrical structure before the two ends are sealed, and the laminated parts 120 on both sides for expanding and contracting to change the volume and the bag sheets 110 connected between the laminated parts 120 are obtained by folding different parts of the same bag tube 100. The bag tube 100 has an opening only at the end, so that after sealing, only a folded edge 130 will be formed at the end, which can effectively improve the air tightness of the compression bag compared with the design of the spliced ​​bag body in the related art. In addition, the edge of at least one end of the bag tube 100 is sealed and connected to form a folded edge 130 through a hot pressing process (i.e., a process in which two pieces of material are melted and fused at the heated location by heating, so that the two pieces are connected as one body), which avoids the problems of degumming, water seepage, air leakage, etc. in the viscose solution, further ensures the air tightness of the compression bag, and then ensures the clothing storage efficiency and moisture-proof, mildew-proof, and odor-proof effects of the compression bag product.

[0078] In some embodiments of the present invention, Figures 1 to 12 , Fig.23 , Fig.24 , Fig.25 As shown, the edges at both ends of the bag tube 100 are heat-pressed and sealed to form a folded edge 130 .

[0079] Or, in other embodiments of the present invention, Fig.21 , Fig. 22 As shown, the edge of the first end of the bag tube 100 is heat-pressed and sealed to form a folded edge 130, and the second end of the bag tube 100 is provided with a bag bottom film 500, and the four sides of the bag bottom film 500 are heat-pressed and connected to the corresponding bag sheet 110 and the laminating part 120 respectively to seal the second end of the bag tube 100.

[0080] As an optional implementation of the present utility model, Figure 3 , Figure 4 , Figure 8 , Fig.10 , Fig.12 , Figure 21 to Figure 25 As shown, the strip-shaped hole and the valve hole are both disposed on the bag sheet 110 , and correspondingly, the sealing strip 200 and the one-way valve 300 are also disposed on the bag sheet 110 .

[0081] As an optional implementation of the present utility model, Figure 3 , Figure 4 , Figure 8 , Fig.10 , Fig.12 As shown, the laminated portion 120 includes a pair of laminated sheets 121 laminated between the bag sheets 110. At one end of the bag tube 100 edge heat-pressed and sealed, the edges of the laminated sheets 121 corresponding to the end of the bag tube 100 are heat-pressed and connected to the edges of the adjacent bag sheets 110, and the edges of the ends of the bag sheets 110 located between the laminated portions 120 are heat-pressed and connected to each other.

[0082] like Fig.21 , Fig. 22 As shown, one end of the bag tube 100 is provided with the bag bottom film 500 , and the edge of the end of the laminate 121 is connected to the edge of the bag bottom film 500 by heat compression.

[0083] In the embodiment of the present invention, the laminated portion 120 is folded in half to form a pair of laminated sheets 121 ( Figure 1 , Figure 7 , Fig. 9 , Fig.11 The position indicated by the middle dotted line is the fold position between the laminates 121). In the idle state, the two laminates 121 of the laminated portion 120 are stacked and stored between the bag sheets 110, and are respectively adhered to the bag sheets 110 on both sides. The edges of the laminates 121 corresponding to the ends of the bag tube 100 are respectively hot-pressed connected to the bag sheets 110 adhered to them, or are hot-pressed connected to the corresponding bag bottom sheet 500, thereby sealing the two ends of the bag tube 100 to ensure the airtightness of the compression bag body.

[0084] like Figure 5 As shown, in some embodiments of the present invention, the two laminates 121 of the laminated portion 120 may be in a separated state at the edges corresponding to the ends of the bag tube 100 .

[0085] Or, as an optional implementation of the utility model, Figures 2 to 4 , Figure 6 As shown, the laminates 121 of at least one laminated portion 120 are heat-pressed together at at least one side edge corresponding to the end of the bag tube 100, that is, when the two ends of the bag tube 100 are heat-pressed and sealed, the two laminates 121 and the two outer bag sheets 110 are all heat-pressed together.

[0086] like Figure 6 As shown, in some embodiments of the present invention, only the laminates 121 of the laminated portion 120 on one side are separated, and the edges of the laminates 121 of the laminated portion 120 on the other side are connected as a whole by heat pressing.

[0087] Alternatively, in other embodiments of the present invention, the edge of one side of the laminate 121 may be connected as a whole by heat pressing, and the edge of the other side may be separated.

[0088] When looking for clothes at home or when urgently needing specific clothes or items when traveling, it is often the case that you forget which bag the items are stored in. In order to find the items, you often need to deflate and open multiple compression bags one by one. After getting the items, you also need to close the opened compression bags one by one, deflate them again and put them back in place, which is time-consuming and laborious.

[0089] In order to solve this technical problem, as a preferred implementation of the utility model, as Figure 7 , Figure 8 , Fig.11 , Fig.12 As shown, a visible window 400 is provided on the bag sheet 110 , and the light transmittance of the bag tube 100 in the area of ​​the visible window 400 is higher than the light transmittance of the bag tube 100 in other areas.

[0090] In the embodiment of the utility model, a visual window 400 is provided on the bag tube 100, and the light transmittance of the visual window 400 is higher than that of other positions of the bag tube 100, so that the user can observe the items inside the compression bag through the visual window 400 without opening the compression bag, so as to quickly find the required items, saving the time of opening the bag to search and re-evacuating and sealing each compression bag after finding the items, thereby improving the user experience.

[0091] As an optional implementation of the present utility model, Fig.24 As shown, the visible window 400 is located on the bag sheet 110 , and the visible window 400 extends from the laminated portion 120 on one side of the bag tube 100 to the laminated portion 120 on the other side of the bag tube 100 .

[0092] As another optional implementation of the present invention, Fig.25 As shown, the visible window 400 is arranged around the bag tube 100, that is, the visible window 400 passes through each bag sheet 110 and the laminated sheet 121 in sequence and goes around the outside of the bag tube.

[0093] As a preferred embodiment of the present invention, Figure 7 , Figure 8 , Fig.11 , Fig.12 , Fig. 22 As shown, the visible window 400 is located on the bag sheet 110 , and the visible window 400 extends from one end of the bag tube 100 to the other end of the bag tube 100 .

[0094] In the embodiment of the utility model, the visible window 400 is arranged in the same direction as the bag tube 100, so that when making the compression bag, the material of the visible window 400 can be cut together with other materials of the bag tube 100, simplifying the manufacturing process of the visible window 400, and the visible window 400 can also replace the overlapping edges produced at the seams when a single material is wrapped into a tube shape, thereby improving the overall aesthetics of the compression bag.

[0095] Specifically, Figure 7 , Fig.11 As shown, the bag sheet 110 includes a light-transmitting sheet 111 and connecting sheets 112 connected to both sides of the light-transmitting sheet 111. The portion of the light-transmitting sheet 111 that does not overlap with the connecting sheets 112 forms a visual window 400. When making a compression bag, the bag tube 100 can be obtained by cutting a longer cylindrical structure, and the cutting portion is the end of the bag tube 100. The material of the light-transmitting sheet 111 can be first hot-pressed and connected to the connecting sheets 112 on both sides, and then Fig.13 As shown, the cylindrical structure is cut into sections, and each section is a bag tube 100.

[0096] It can be understood that, for the bag sheet 110 with the visual window 400, the edges of the light-transmitting sheet 111 and the connecting sheet 112 are the edges of the bag sheet 110, and the connection method between the edges at both ends of the light-transmitting sheet 111 and the connecting sheet 112 and other structures is the same as that of the ordinary bag sheet 110. For example, at the end where the edge of the end of the bag sheet 110 is directly connected by heat pressing, the edge of the light-transmitting sheet 111 corresponding to the end of the bag tube 100 and the edge of the connecting sheet 112 corresponding to the end of the bag tube 100 are overlapped with the bag sheet 110 on the opposite side and are connected by heat pressing; at the end where the bag bottom sheet 500 is provided, the edge of the light-transmitting sheet 111 corresponding to one side of the bag bottom sheet 500 and the edge of the connecting sheet 112 corresponding to one side of the bag bottom sheet 500 are connected by heat pressing to the edge of the bag bottom sheet 500.

[0097] As an optional implementation of the present invention, the light transmittance of the light-transmitting sheet 111 to natural light is not less than 30%.

[0098] Preferably, the light-transmitting sheet 111 is made of frosted material, so as to facilitate the user to observe and find items in the bag while protecting the user's privacy.

[0099] To facilitate the understanding of technicians, the following is a specific production process of a compression bag provided by an embodiment of the utility model:

[0100] First, if Fig.14 As shown, the strip hole 11 and the valve hole 12 of each bag tube 100 are made on the sheet 10 (corresponding to the bottom bag sheet 110, the laminated portion 120 and the connecting sheet 112 of the top bag sheet 110 before folding, and only the length corresponding to a single bag tube 100 is shown in the figure);

[0101] Then, if Figure 14 to Figure 15 As shown, a sealing strip 200 is fixed in each strip hole 11, and a one-way valve 300 is fixed in each valve hole 12;

[0102] Then, if Figures 15 to 17 As shown, the sheet 10 is curled, and its two sides are hot pressed together with the side edges of the light-transmitting sheet 111 to form a cylindrical structure;

[0103] Then, if Figure 17 to Figure 18 As shown, the two sides of the cylindrical structure are folded inward to form a laminated portion 120, and the bottom portion located between the two laminated portions 120 is formed as the bottom bag sheet 110, and the top sheet material 10 is folded correspondingly to form a connecting sheet 112, and the connecting sheet 112 and the middle light-transmitting sheet 111 together constitute the top bag sheet 110;

[0104] Finally, if Figure 18 to Figure 19 As shown, the folded tubular structure is cut into sections, and the edges of the cuts are heat-pressed and welded to form overlapping edges 130, thereby obtaining a plurality of compression bags provided by the utility model.

[0105] As an optional implementation of the present utility model, Figure 7 , Figure 8 , Fig.11 , Fig.12 As shown, the sealing strip 200 and the one-way valve 300 are both arranged on the same bag sheet 110 as the viewing window 400 , and are respectively located on both sides of the viewing window 400 .

[0106] As a preferred embodiment of the present invention, Figure 7 , Figure 8 , Fig.11 , Fig.12 As shown, the extension direction of the sealing strip 200 is parallel to the extension direction of the visible window 400, so that when the sealing strip 200 is pulled, a reaction force can be applied to the folded edge 130 on one side of the compression bag. During the pulling process, the seal will not be pulled open, causing the internal items to spill out, thereby improving the user experience.

[0107] As a preferred embodiment of the present invention, Figure 7 , Figure 8 , Fig.11 , Fig.12 As shown, the one-way valve 300 is located at the center of the area on one side of the bag sheet 110 corresponding to the visible window 400, thereby ensuring the uniformity of the material structure around the one-way valve 300, avoiding stress concentration around the one-way valve 300, and thus ensuring the structural strength of the compression bag.

[0108] As an optional implementation of the present invention, the material of the bag tube 100 includes thermoplastic plastic.

[0109] As an optional embodiment of the present invention, the compression bag extends along the width direction of the folded edge 130 (i.e. Figure 1 The dimension in the up and down direction) is 150mm to 500mm.

[0110] Further, as an optional embodiment of the present invention, the dimension of the compression bag along the width direction may be 220 mm to 430 mm.

[0111] As an optional embodiment of the present invention, the compression bag is arranged along the length direction (i.e. Figure 1 The dimension in the left and right direction) is 200mm to 800mm.

[0112] Further, as an optional embodiment of the present invention, the dimension of the compression bag along the length direction may be 370 mm to 670 mm.

[0113] As an optional implementation of the present invention, the dimension of the viewing window 400 along the width direction is 60 mm to 300 mm.

[0114] Further, as an optional embodiment of the present invention, the dimension of the visible window 400 along the width direction may be 85 mm to 180 mm.

[0115] As an optional implementation of the present invention, the width of the laminate 121 is 20 mm to 90 mm.

[0116] Further, as an optional embodiment of the present invention, the width of the laminate 121 may be 45 mm to 75 mm.

[0117] The embodiment of the utility model does not specifically limit the structural type of the sealing strip 200, as long as it can ensure the airtightness of the compression bag. For example, the sealing strip 200 may include a zipper, the zipper includes a zipper pull head, a concave buckle strip and a convex buckle strip, the concave buckle strip and the convex buckle strip both extend along the extension direction of the strip hole, and are respectively fixed on both side edges of the strip hole, and the zipper pull head can move along the strip hole to buckle or open the concave buckle strip and the convex buckle strip.

[0118] As a preferred embodiment of the present invention, Figure 1 As shown, the sealing strip 200 includes a zipper, and the zipper includes a slider 210, a first tooth group 220 and a second tooth group 230. The first tooth group 220 includes a plurality of first zipper teeth, and the second tooth group 230 includes a plurality of second zipper teeth. The first tooth group 220 and the second tooth group 230 are respectively fixed on the two side edges of the strip hole and are distributed along the extension direction of the strip hole. The slider 210 is used to move along the strip hole and make the first tooth group 220 and the second tooth group 230 buckle or open.

[0119] In the embodiment of the utility model, a zipper structure is used to seal the strip-shaped hole. The zipper structure is stable, has high strength, and is resistant to wear and tear. It can still maintain a sealing effect after repeated use, and can effectively ensure the service life of the compression bag and the yield of the compression bag product.

[0120] As an optional implementation of the present utility model, Figure 1As shown, the zipper also includes a first connecting piece 240 and a second connecting piece 250, the first tooth group 220 is fixedly arranged on the first connecting piece 240, and the second tooth group 230 is fixedly arranged on the second connecting piece 250, and the outer edges of the first connecting piece 240 and the second connecting piece 250 are respectively hot-pressed connected to the two side edges of the strip hole.

[0121] In order to facilitate the application of force when opening or closing the sealing strip 200, as a preferred embodiment of the present invention, Figures 9 to 12 As shown, the sealing strip 200 extends from one end of the bag tube 100 to the other end of the bag tube 100, or as shown in FIG. Fig.23 , Fig.24 , Fig.25 As shown, it extends along the edge of the end of the bag tube 100. Figures 9 to 12 , Fig.23 , Fig.24 , Fig.25 As shown, a force application hole 510 is provided on the overlapped edge 130 at the end of the bag tube 100 . The force application hole 510 penetrates the overlapped edge 130 along the thickness direction, and the position of the force application hole 510 corresponds to the end position of the sealing strip 200 .

[0122] In the embodiment of the utility model, a force hole 510 is provided at the end of the sealing strip 200, so that when opening or closing the sealing strip 200, the pull head can be pulled by one hand, and the fingers of the other hand can be inserted into the force hole 510 to apply a reverse force, thereby improving the convenience of taking and placing items on the opening and closing sealing strip 200.

[0123] As a preferred embodiment of the present invention, Figures 9 to 12 , Fig.23 , Fig.24 , Fig.25 As shown, force application holes 510 are correspondingly provided at both ends of the sealing strip 200, so that force can be applied to the force application holes 510 on the corresponding side when the sealing strip 200 is opened or closed.

[0124] In order to further ensure the structural strength of the compression bag, as an optional implementation of the utility model, Figures 9 to 12 , Fig.23 , Fig.24 , Fig.25 As shown, a folded edge reinforcement portion 520 is further provided on the folded edge 130 , the folded edge reinforcement portion 520 is covered on the folded edge 130 , and the force application hole 510 penetrates the folded edge reinforcement portion 520 and the folded edge 130 along the thickness direction.

[0125] In the embodiment of the utility model, a fold edge reinforcement portion 520 is further provided on the fold edge 130 corresponding to the force application hole 510, so as to provide additional reinforcement for the force application hole 510, thereby ensuring the structural strength of the compression bag at the force-bearing part, and further ensuring the product quality of the compression bag.

[0126] As an optional embodiment of the present invention, the force application hole 510 is located at a corner of the bag tube 100, and the shape of the force application hole 510 is a triangle, a nearly triangle, a trapezoid, or a nearly trapezoid. Figures 9 to 12 , Fig.23 , Fig.24 , Fig.25 The figure shows a case where the shape of the force application hole 510 is a rounded trapezoid.

[0127] As an optional implementation of the present utility model, Figures 9 to 12 , Fig.23 , Fig.24 , Fig.25 As shown, the shape of the overlapped edge reinforcement portion 520 corresponds to the shape of the force application hole 510 .

[0128] As an optional implementation of the present invention, the folded edge reinforcement portion 520 is connected to the folded edge 130 by heat pressing.

[0129] As an optional implementation of the present invention, the material of the folded edge reinforcement portion 520 is consistent with the material of the laminate 121 .

[0130] As a preferred embodiment of the present invention, the folded edge reinforcement portion 520 is made of rubber material to ensure the friction between the finger and the compression bag when the sealing strip 200 is pulled.

[0131] As an optional implementation of the present invention, the thickness of the bag sheet 110 and the laminated sheet 121 is 0.3 mm to 0.8 mm.

[0132] Preferably, the thickness of the bag sheet 110 and the laminate 121 may be 0.4 mm to 0.5 mm.

[0133] As an optional implementation of the present invention, the thickness of the bag sheet 110 and the laminated sheet 121 is 0.45 mm.

[0134] As an optional implementation of the present invention, the thickness of the folded edge reinforcement portion 520 is 0.1 mm to 0.3 mm.

[0135] Preferably, the thickness of the folded edge reinforcement portion 520 is 0.2 mm.

[0136] As an optional implementation of the present utility model, Fig. 20As shown, the one-way valve 300 includes a valve body 310, a sealing cover 320 and a flexible connecting portion 330. The valve body 310 is fixedly arranged in the valve hole and can conduct one-way from the inside to the outside. The sealing cover 320 is connected to the valve body 310 through the flexible connecting portion 330, and the sealing cover 320 can seal the air outlet of the valve body 310 to prevent sharp objects outside the compression bag from damaging the valve sheet and other structures inside the valve body 310, thereby further ensuring the structural strength of the compression bag.

[0137] As an optional embodiment of the present invention, the valve body 310 includes a valve seat and a valve plate. The valve seat is fixedly arranged in the valve hole and an air outlet cavity is formed in the valve seat. An air outlet is formed at the top of the air outlet cavity. A connecting hole for circulation with the interior of the bag tube 100 is formed at the bottom of the air outlet cavity. The valve plate is movably arranged in the air outlet cavity and can seal the connecting hole under the action of air pressure outside the bag tube 100.

[0138] As a preferred embodiment of the present invention, Fig. 20 As shown, the sealing cover 320 has a gripping portion 321 on one side away from the flexible connection portion 330 , and the gripping portion 321 extends in a direction away from the flexible connection portion 330 , so that when the sealing cover 320 is pulled open, the user can pinch the gripping portion 321 to apply force, further improving the convenience of using the compression bag.

[0139] In the present invention, the two sides of the compression bag have a laminated portion 120 folded inwardly, so that a flexible storage space can be provided for clothes in the bag by means of the expansion and contraction of the laminated portion 120. In addition, a sealing strip 200 is fixedly arranged on the compression bag, which can be selectively opened to take out clothes, or the strip-shaped hole can be sealed to prevent the external gas from entering the compression bag. The one-way valve 300 can be unidirectionally conducted from the inside to the outside to realize the outward exhaust, and after the exhaust, the external gas is prevented from entering the compression bag, so as to maintain the low pressure state inside the compression bag.

[0140] Moreover, the bag body of the compression bag is a cylindrical structure before the two ends are sealed, and the laminated parts 120 on both sides for expanding and contracting to change the volume and the bag sheets 110 connected between the laminated parts 120 are obtained by folding different parts of the same bag tube 100. The bag tube 100 has an opening only at the end, so that after sealing, only a folded edge 130 will be formed at the end, which can effectively improve the air tightness of the compression bag compared with the design of the spliced ​​bag body in the related art. In addition, the edge of at least one end of the bag tube 100 is sealed and connected by a hot pressing process to form a folded edge 130, which avoids the problems of degumming, water seepage, air leakage, etc. in the viscose solution, further ensures the air tightness of the compression bag, and then ensures the clothing storage efficiency and moisture-proof, mildew-proof, and odor-proof effects of the compression bag product.

[0141] The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Those skilled in the art should understand that the present invention includes but is not limited to the contents described in the drawings and the above specific embodiments. Any modification that does not deviate from the functional and structural principles of the present invention shall be included in the scope of the claims.

Claims

1. A compression bag, It is characterized in that The compression bag includes a bag tube, a sealing strip and a one-way valve. Both sides of the bag tube are folded inward to form a laminated portion, and the portion between the laminated portions forms a bag sheet. Both ends of the bag tube are sealed, and the edge of at least one end of the bag tube is heat-pressed and sealed. The bag tube is provided with a strip hole and a valve hole. The sealing strip is fixedly arranged in the strip hole and can selectively open or seal the strip hole. The one-way valve is fixedly arranged in the valve hole, and the one-way valve can conduct unidirectionally from the inside to the outside to allow the fluid in the compression bag to be discharged outward through the valve hole.

2. The compression bag according to claim 1, It is characterized in that The edges at both ends of the bag tube are heat-pressed and sealed, or the edge at the first end of the bag tube is heat-pressed and sealed, and a bag bottom sheet is provided at the second end of the bag tube, and the four sides of the bag bottom sheet are heat-pressed and connected to the corresponding bag sheet and the laminated part respectively to seal the second end of the bag tube.

3. The compression bag according to claim 2, It is characterized in that The laminated portion includes a pair of laminates stacked between the bag sheets. At one end of the bag tube edge that is heat-pressed and sealed, the edges of the laminates corresponding to the end of the bag tube are heat-pressed connected to the edges of the adjacent bag sheets, and the edges of the bag sheet ends located between the laminated portions are heat-pressed connected to each other; at one end of the bag tube where the bag bottom sheet is arranged, the edges of the laminate ends are heat-pressed connected to the edges of the bag bottom sheet.

4. The compression bag according to claim 3, It is characterized in that The laminated sheets of at least one of the laminated portions are connected to each other by heat compression at at least one side edge corresponding to the end of the bag tube.

5. The compression bag according to any one of claims 1 to 4, It is characterized in that The bag tube is provided with a visual window, and the light transmittance of the bag tube in the visual window area is higher than the light transmittance of the bag tube in other areas.

6. The compression bag according to claim 5, It is characterized in that The visible window is located on the bag sheet, and the visible window extends from one end of the bag tube to the other end of the bag tube.

7. The compression bag according to claim 6, It is characterized in that The sealing strip and the one-way valve are both arranged on the same bag sheet as the viewing window, and are respectively located on both sides of the viewing window.

8. The compression bag according to claim 7, It is characterized in that The one-way valve is located at the center of a region of the bag sheet corresponding to one side of the viewing window.

9. The compression bag according to claim 6, It is characterized in that The bag sheet includes a light-transmitting sheet and connecting sheets connected to two sides of the light-transmitting sheet, and the portion of the light-transmitting sheet that is not overlapped with the connecting sheets forms the visual window.

10. The compression bag according to any one of claims 1 to 4, It is characterized in that The sealing strip extends from one end of the bag tube to the other end of the bag tube or along the edge of the end of the bag tube. A force hole is provided on the folded edge at the end of the bag tube. The force hole penetrates the folded edge along the thickness direction, and the position of the force hole corresponds to the end position of the sealing strip.

11. The compression bag according to claim 10, It is characterized in that The folded edge is also provided with a folded edge reinforcement portion, the folded edge reinforcement portion is coated on the folded edge, and the force application hole penetrates the folded edge reinforcement portion and the folded edge along the thickness direction.

12. The compression bag according to claim 11, It is characterized in that The folded edge reinforcement portion is connected to the folded edge by hot pressing.

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