Hand rolling type vacuum compression bag
By printing or pasting printed parts inside a double-layer liner, and using high-melting-point ink to form vents and air-blocking strips, the problem of adhesion caused by aluminum plates is solved, improving the sealing effect and yield.
Patent Information
- Application Number
- CN202422738363.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-11
- Publication Date
- 2025-11-11
- Estimated Expiration
- 2034-11-11
AI Technical Summary
In existing hand-rolled vacuum compression bags, the high temperature of the aluminum plate during prolonged use causes the double-layer lining film to stick together, affecting the yield rate.
Printed sections or printed parts are printed inside a double-layer liner. The melting point of the ink and PET is higher than that of heat sealing, avoiding the use of aluminum plates for heat sealing. This creates vents and air-blocking strips to improve the sealing effect.
This effectively solves the problem of aluminum plates sticking to the double-layer lining film at high temperatures, improving the sealing effect and yield.
Smart Images
Figure CN223533985U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of storage bags, and in particular to a hand-rolled vacuum compression bag. Background Technology
[0002] Storage bags are widely and commonly used in modern life. Compression bags (vacuum compression bags), also known as PE zipper composite bags, effectively prevent fleas, mold, moisture, oxidation, etc., keeping clothes clean and preserved. They can be divided into vacuum compression bags, air-squeezing quilt compression bags, hand-rolled vacuum compression bags, and hand-press vacuum compression bags, etc.
[0003] The earliest hand-rolled vacuum compression bags, such as Figure 1 As shown, the vacuum compression bag body 10 includes two bag films. A first sealing strip 80 and a second sealing strip 90 are pressed between the two bag films. The first sealing strip 80 and the second sealing strip 90 are arranged vertically at intervals, forming an exhaust channel 42. The first sealing strip 80 and the left sealing edge 11 have a first exhaust port 41, and the second sealing strip 90 and the right sealing edge 11 have a second exhaust port 43. The first exhaust port 41 and the second exhaust port 43 are correspondingly arranged on both sides of the vacuum compression bag body 10. During the rolling process, the air inside the vacuum compression bag body 10 is discharged from the bag through the exhaust channel 42. After the exhaust stops, the two bag films at the bottom exhaust channel 42 are tightly bonded together due to the pressure difference between the inside and outside and electrostatic adsorption, thereby preventing air backflow and achieving a sealing effect. This hand-rolled vacuum compression bag relies on pressure difference and electrostatic adsorption. The thinner the bag film, the better the sealing effect. However, the actual thickness of the bag film produced and sold is not very thin, so the sealing effect is relatively average.
[0004] To solve the above technical problems, a double-layer liner 40 was added at the position of the bag film corresponding to the exhaust channel 42, such as... Figures 2-3 As shown, specifically, the upper first liner 50 is heat-sealed with the upper bag film, and the lower second liner 60 is heat-sealed with the lower bag film. When pressing the two bag films, the double-layer liner 40 is separated by an aluminum plate 110 to prevent the double-layer liner 40 from sticking together and causing the double-layer liner 40 to be unable to form an exhaust channel. In use, this hand-rolled vacuum compression bag relies on air pressure difference and electrostatic adsorption. After exhausting, the double-layer liner 40 will stick together firmly to achieve a sealing effect. However, during long-term production of this hand-rolled vacuum compression bag, the temperature of the aluminum plate 110 will become higher and higher, eventually causing the aluminum plate 110 and the double-layer liner 40 to stick together, causing the double-layer liner 40 to be torn when pulled, thus greatly affecting the yield. Summary of the Invention
[0005] The purpose of this invention is to provide a hand-rolled vacuum compression bag. By printing or pasting printed parts inside the double-layer liner, and utilizing the fact that the melting point of ink and PET is higher than the melting point of the heat-sealed first sealing strip, aluminum plates are not needed when pressing the first and second sealing strips, thus effectively solving the problem that aluminum plates easily stick to the double-layer liner at high temperatures.
[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a hand-rolled vacuum compression bag, comprising a vacuum compression bag body, the vacuum compression bag body comprising a first bag film, a second bag film and a double-layer liner, the double-layer liner comprising a first liner and a second liner, the inner surface of the first liner and / or the second liner being printed with a printed portion, the printed portion extending to the upper edge of the double-layer liner, the first bag film, the double-layer liner, and the second bag film being heat-pressed with a first sealing strip and a second sealing strip, the melting point of the printed portion being higher than the melting point of the heat-sealed first sealing strip so that the double-layer liner forms a first vent at the printed portion, the double-layer liner having an exhaust channel inside, and a gap being left between the second sealing strip and the side sealing edge of the vacuum compression bag body so that the double-layer liner forms a second vent at the gap.
[0007] Furthermore, the double-layer backing film has a vertically arranged air barrier strip heat-sealed on the side of the printing section. The first backing film and the second backing film are connected as one unit by the air barrier strip formed by heat sealing. The air barrier strip is arranged on the side of the printing section facing the second exhaust port.
[0008] Furthermore, the printing section is provided in two or more sets, and the printing sections are arranged laterally at intervals along the length direction of the double-layer film.
[0009] Furthermore, the double-layer liner has a gas barrier strip heat-sealed on one side of each printing section corresponding to the second exhaust port.
[0010] Furthermore, the first exhaust port is located at one of the side sealing edges adjacent to the vacuum compression bag body, and the second exhaust port is located at the other side sealing edge adjacent to the vacuum compression bag body.
[0011] Furthermore, the first sealing strip is disposed at the upper edge of the double-layer liner, and the second sealing strip is disposed at the lower edge of the double-layer liner.
[0012] A hand-rolled vacuum compression bag includes a vacuum compression bag body, which comprises a first bag film, a second bag film, and a double-layer liner. The double-layer liner includes a first liner and a second liner. A printed element is adhered to the inner surface of the first or second liner, extending to the upper edge of the double-layer liner. A first sealing strip and a second sealing strip are heat-pressed onto the first bag film, the double-layer liner, and the second bag film. The melting point of the printed element is higher than the melting point of the heat-sealed first sealing strip, so that the double-layer liner forms a first vent at the printed element. The double-layer liner has an exhaust channel inside. A gap is left between the second sealing strip and the side sealing edge of the vacuum compression bag body, so that the double-layer liner forms a second vent at the gap.
[0013] Furthermore, the printed parts are provided in at least one set, and when there are two or more sets of printed parts, the printed parts are arranged laterally at intervals along the length direction of the double-layer backing film.
[0014] Furthermore, the first exhaust port is located at one of the side sealing edges adjacent to the vacuum compression bag body, and the second exhaust port is located at the other side sealing edge adjacent to the vacuum compression bag body.
[0015] In summary, this utility model has the following beneficial effects:
[0016] This utility model of a hand-rolled vacuum compression bag, by printing or pasting printed parts inside the double-layer liner, utilizes the fact that the melting point of ink and PET is higher than the melting point of the heat-sealed first sealing strip. Therefore, aluminum plates are not required when pressing the first and second sealing strips, thus effectively solving the problem that aluminum plates easily stick to the double-layer liner at high temperatures. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the earliest hand-rolled vacuum compression bag.
[0018] Figure 2 This is a schematic diagram of the structure of an existing hand-rolled vacuum compression bag with a double-layer liner.
[0019] Figure 3 This is an exploded view of an existing hand-rolled vacuum compression bag with a double-layer liner.
[0020] Figure 4 This is a schematic diagram of the structure of the hand-rolled vacuum compression bag with a printing section according to this utility model.
[0021] Figure 5 This is an exploded view of the hand-rolled vacuum compression bag with a printing section according to this utility model.
[0022] Figure 6 This is a schematic diagram of the structure of the double-layer liner with a printing section of this utility model.
[0023] Figure 7 This is a schematic diagram of the structure of the hand-rolled vacuum compression bag with printed parts according to this utility model.
[0024] Figure 8 This is a schematic diagram of the structure of the double-layer liner with printed parts according to this utility model.
[0025] In the figure: 10, vacuum compression bag body; 11, side sealing edge; 20, first bag film; 30, second bag film; 40, double-layer liner; 41, first exhaust port; 42, exhaust channel; 43, second exhaust port; 44, air barrier strip; 50, first liner; 60, second liner; 70, printing section; 80, first sealing strip; 90, second sealing strip; 100, printed part; 110, aluminum plate. Detailed Implementation
[0026] The present invention will be further described below with reference to the accompanying drawings. It should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the accompanying drawings. Figure 4 The orientations or positional relationships shown, or the orientations or positional relationships in which the product of this utility model is usually placed during use, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In addition, the terms "first," "second," "third," etc. are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.
[0027] like Figures 4-6 As shown, a hand-rolled vacuum compression bag includes a vacuum compression bag body 10. The vacuum compression bag body 10 includes a first bag film 20, a second bag film 30, and a double-layer liner 40. The double-layer liner 40 includes a first liner 50 and a second liner 60. The first liner 50 and the second liner 60 are preferably made of PE. The inner surface of the first liner 50 and / or the second liner 60 is printed with a printing portion 70. That is, the printing portion 70 can be printed only on the inner surface of the first liner 50, or only on the inner surface of the second liner 60, or printed on both the inner surfaces of the first liner 50 and the second liner 60. The printing portion 70 extends to the upper edge of the double-layer liner 40. The shape of the printing portion 70 includes, but is not limited to, […]. Figure 3The arrow-shaped markings in the image can also be rectangular, etc. The first bag film 20, the double-layer liner film 40, and the second bag film 30 are stamped with a first sealing strip 80 and a second sealing strip 90. The melting point of the printed part 70 is higher than the melting point of the heat-sealed first sealing strip 80 so that the double-layer liner film 40 forms a first vent 41 at the printed part 100. The double-layer liner film 40 has an exhaust channel 42 inside. The second sealing strip 90 and the side sealing edge 11 of the vacuum compression bag body 10 are left with a gap so that the double-layer liner film 40 forms a second vent 43 in the gap.
[0028] The vacuum compression bag body 10 has side sealing edges 11 on both the left and right sides, namely the left sealing edge 11 and the right sealing edge 11. The upper end of the vacuum compression bag body 10 is provided with a closable opening for storing the contents and a sealing structure. The above is the prior art of this utility model, so it will not be described in detail here.
[0029] During the rolling process, the air inside the vacuum compression bag body 10 is discharged to the outside of the vacuum compression bag body 10 through the first exhaust port 41, the exhaust channel 42 and the second exhaust port 43 in sequence. After the exhaust stops, the first liner 50 and the second liner 60 at the bottom exhaust channel 42 are tightly bonded together under the pressure difference between the inside and outside and the electrostatic adsorption, thereby achieving a sealing effect.
[0030] In some embodiments, the double-layer liner 40 has a vertically arranged air barrier strip 44 heat-sealed on the side of the printing section 70. The first liner 50 and the second liner 60 are connected as one unit by the air barrier strip 44 formed by heat sealing. The air barrier strip 44 is disposed on the side of the printing section 70 facing the second exhaust port 43. The air barrier strip 44 plays a role in preventing air backflow, thereby effectively improving the exhaust efficiency of the vacuum compression bag body 10.
[0031] In some embodiments, the printing section 70 is provided in two or more groups, and the printing sections 70 are arranged laterally at intervals along the length of the double-layer liner film 40. The area of each printing section 70 of the double-layer liner film 40 is a first exhaust port 41. That is, each printing section 70 on the double-layer liner film 40 represents a first exhaust port 41. By providing multiple printing sections 70 (i.e. multiple exhaust ports), the user can quickly exhaust the air inside the vacuum compression bag body 10 to the outside of the vacuum compression bag body 10 when rolling and pressing the vacuum compression bag body 10, thereby improving the exhaust efficiency.
[0032] In some embodiments, the double-layer backing film 40 is heat-sealed with an air-blocking strip 44 on one side of each printing section 70 corresponding to the second exhaust port 43. The air-blocking strip 44 also serves to prevent air from flowing back from the adjacent first exhaust port 41.
[0033] In some embodiments, the first exhaust port 41 is located near one of the side sealing edges 11 of the vacuum compression bag body 10, and the second exhaust port 43 is located near the other side sealing edge 11 of the vacuum compression bag body 10, for example... Figure 3 As shown, the second exhaust port 43 is located near the right sealing edge 11, and the first exhaust port 41 and the second exhaust port 43 are located on the two sides respectively, which can greatly reduce the probability of external air flowing back into the vacuum compression bag body 10.
[0034] In some embodiments, the first sealing strip 80 is disposed at the upper edge of the double-layer liner film 40, and the second sealing strip 90 is disposed at the lower edge of the double-layer liner film 40. The first bag film 20, the double-layer liner film 40, and the second bag film 30 are pressed together at the first sealing strip 80 and the second sealing strip 90.
[0035] In some embodiments, such as Figures 7-8 As shown, a hand-rolled vacuum compression bag includes a vacuum compression bag body 10. The vacuum compression bag body 10 includes a first bag film 20, a second bag film 30, and a double-layer liner 40. The double-layer liner 40 includes a first liner 50 and a second liner 60. The first liner 50 and the second liner 60 are preferably made of PE. A printed element 100 is adhered to the inner surface of the first liner 50 or the second liner 60. The printed element 100 is made of materials including but not limited to PET. The melting point of the printed element 100 is higher than that of the first liner 50 and the second liner 60. The printed part 100 extends to the upper edge of the double-layer liner film 40. The first bag film 20, the double-layer liner film 40, and the second bag film 30 are heat-pressed with a first sealing strip 80 and a second sealing strip 90. The melting point of the printed part 100 is higher than the melting point of the heat-sealed first sealing strip 80 so that the double-layer liner film 40 forms a first vent 41 at the printed part 100. The double-layer liner film 40 has an exhaust channel 42 inside. The second sealing strip 90 and the side sealing edge 11 of the vacuum compression bag body 10 are left with a gap so that the double-layer liner film 40 forms a second vent 43 in the gap.
[0036] In some embodiments, at least one set of printed elements 100 is provided. When two or more sets of printed elements 100 are provided, the printed elements 100 are arranged laterally at intervals along the length of the double-layer backing film 40. Each area of the double-layer backing film 40 containing each printed element 100 is a first exhaust port 41. That is, each printed element 100 on the double-layer backing film 40 represents a first exhaust port 41. By providing multiple printed elements 100 (i.e., multiple exhaust ports), the user can quickly exhaust the air inside the vacuum compression bag body 10 to the outside of the vacuum compression bag body 10 when rolling and compressing it, thereby improving exhaust efficiency.
[0037] In some embodiments, the first exhaust port 41 is located near one of the side sealing edges 11 of the vacuum compression bag body 10, and the second exhaust port 43 is located near the other side sealing edge 11 of the vacuum compression bag body 10. For example Figure 4 As shown, the second exhaust port 43 is located near the right sealing edge 11, and the first exhaust port 41 and the second exhaust port 43 are located on the two sides respectively, which can greatly reduce the probability of external air flowing back into the vacuum compression bag body 10.
[0038] In summary, this utility model has the following beneficial effects:
[0039] This utility model of a hand-rolled vacuum compression bag, by printing a printed part 70 inside the double-layer liner 40 or pasting a printed part 100 inside the double-layer liner 40, utilizes the fact that the melting point of ink and PET is higher than the melting point of the heat-sealed first sealing strip 80, so that the aluminum plate 110 is not needed when pressing the first sealing strip 80 and the second sealing strip 90, thus effectively solving the problem that the aluminum plate 110 is easy to stick to the double-layer liner 40 at high temperature.
[0040] The above description is only a preferred embodiment of the present utility model. Therefore, all equivalent changes or modifications made to the structure, features and principles described in the claims of the present utility model patent application are included in the scope of the present utility model patent application.
Claims
1. A hand-rolled vacuum compression bag, comprising a vacuum compression bag body (10), characterized in that: The vacuum compression bag body (10) includes a first bag film (20), a second bag film (30), and a double-layer liner (40). The double-layer liner (40) includes a first liner (50) and a second liner (60). The inner surface of the first liner (50) and / or the second liner (60) is printed with a printing portion (70), which extends to the upper edge of the double-layer liner (40). The first bag film (20), the double-layer liner (40), and the second bag film (30) are stamped with a first... A first sealing strip (80) and a second sealing strip (90) are provided. The melting point of the printed part (70) is higher than the melting point of the heat-sealed first sealing strip (80) so that the double-layer liner (40) forms a first vent (41) at the printed part (100). The double-layer liner (40) has an exhaust channel (42) inside. The second sealing strip (90) and the side sealing edge (11) of the vacuum compression bag body (10) are left with a gap so that the double-layer liner (40) forms a second vent (43) at the gap.
2. The hand-rolled vacuum compression bag according to claim 1, characterized in that: The double-layer backing film (40) has a vertically arranged air barrier strip (44) heat-sealed on the side of the printing section (70). The first backing film (50) and the second backing film (60) are connected as one unit by the air barrier strip (44) formed by heat sealing. The air barrier strip (44) is arranged on the side of the printing section (70) facing the second exhaust port (43).
3. A hand-rolled vacuum compression bag according to claim 2, characterized in that: The printing section (70) is provided in two or more sets, and the printing sections (70) are arranged laterally at intervals along the length direction of the double-layer backing film (40).
4. A hand-rolled vacuum compression bag according to claim 3, characterized in that: The double-layer liner (40) has a gas barrier strip (44) heat-sealed on one side of each printing section (70) corresponding to the second exhaust port (43).
5. A hand-rolled vacuum compression bag according to any one of claims 1-4, characterized in that: The first exhaust port (41) is located at one of the side sealing edges (11) adjacent to the vacuum compression bag body (10), and the second exhaust port (43) is located at the other side sealing edge (11) adjacent to the vacuum compression bag body (10).
6. A hand-rolled vacuum compression bag according to any one of claims 1-4, characterized in that: The first sealing strip (80) is disposed at the upper edge of the double-layer liner (40), and the second sealing strip (90) is disposed at the lower edge of the double-layer liner (40).
7. A hand-rolled vacuum compression bag, comprising a vacuum compression bag body (10), characterized in that: The vacuum compression bag body (10) includes a first bag film (20), a second bag film (30), and a double-layer liner (40). The double-layer liner (40) includes a first liner (50) and a second liner (60). A printed element (100) is adhered to the inner surface of the first liner (50) or the second liner (60). The printed element (100) extends to the upper edge of the double-layer liner (40). The first bag film (20), the double-layer liner (40), and the second bag film (30) are stamped with a first... A first sealing strip (80) and a second sealing strip (90) are provided. The melting point of the printed part (100) is higher than the melting point of the heat-sealed first sealing strip (80) so that the double-layer liner (40) forms a first vent (41) at the printed part (100). The double-layer liner (40) has an exhaust channel (42) inside. The second sealing strip (90) and the side sealing edge (11) of the vacuum compression bag body (10) are left with a gap so that the double-layer liner (40) forms a second vent (43) at the gap.
8. A hand-rolled vacuum compression bag according to claim 7, characterized in that: The printed parts (100) are provided in at least one set. When the printed parts (100) are provided in two or more sets, the printed parts (100) are arranged laterally at intervals along the length direction of the double-layer backing film (40).
9. A hand-rolled vacuum compression bag according to claim 7, characterized in that: The first exhaust port (41) is located at one of the side sealing edges (11) adjacent to the vacuum compression bag body (10), and the second exhaust port (43) is located at the other side sealing edge (11) adjacent to the vacuum compression bag body (10).