Liquid strip package and heat sealing device for liquid strip package

Abstract

The utility model discloses a liquid strip package and a heat sealing device for the liquid strip package, the liquid strip package comprises a bag body, the upper end and the lower end of the bag body are respectively an upper heat sealing opening and a lower heat sealing opening, and the left end and the right end of the upper heat sealing opening and the left end and the right end of the lower heat sealing opening symmetrically move and sink inwards and are folded to form the liquid strip package with the left end and the right end being of a four-layer structure and the middle being of a two-layer structure. The upper heat sealing opening and the lower heat sealing opening are sealed through first heat sealing indentations, the adjoining positions of the four-layer structures and the two-layer structures of the upper heat sealing opening and the lower heat sealing opening are sealed through second heat sealing indentations, and the second heat sealing indentations are overlapped on the first heat sealing indentations. The upper heat sealing opening and the lower heat sealing opening are sealed through the first heat sealing indentations, then the second heat sealing indentations are obtained through heat sealing at the adjoining positions of the four-layer structure and the two-layer structure of the upper heat sealing opening and the lower heat sealing opening, and the first heat sealing indentations and the second heat sealing indentations are overlapped for heat sealing. The sealing performance of the adjoining position of the four-layer structure and the two-layer structure of the upper heat seal and the lower heat seal can be effectively improved, and liquid leakage is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of liquid strip packages, in particular to a liquid strip package and a heat sealing device used for the liquid strip package. Background Art

[0002] Compared with oral liquid products in glass bottles, oral liquid strip packs have the characteristics of low production cost, easy to carry, and safer to use, thus winning the favor of more manufacturers and consumers.

[0003] Current liquid strip packaging structures are as follows Figure 1 As shown, the left and right ends of the sealing end will fold inward to form a liquid strip package with a four-layer structure on the left and right ends and a two-layer structure in the middle. However, due to the different thicknesses at the junction of the four-layer structure and the two-layer structure, there will be leakage after heat sealing, and the proportion of leaking strip packages ranges from a few ten-thousandths to a few one-hundred-thousandths. Utility Model Content

[0004] The purpose of the utility model is to overcome the defects in the prior art and provide a liquid strip package and a heat sealing device for the liquid strip package, by which the above-mentioned problems in the prior art can be effectively solved.

[0005] To achieve the above-mentioned purpose, the technical solution of the utility model is to design a liquid strip package, which includes a bag body, wherein the upper and lower ends of the bag body are respectively an upper heat seal and a lower heat seal, and the left and right ends of the upper heat seal and the lower heat seal are symmetrically moved inward to be recessed and creased to form a liquid strip package with four-layer structures on the left and right ends and a two-layer structure in the middle, the upper heat seal and the lower heat seal are sealed by a first heat seal indentation, and the four-layer structure and the two-layer structure on the upper heat seal and the lower heat seal are sealed at their adjacent locations by a second heat seal indentation, and the second heat seal indentation is superimposed on the first heat seal indentation.

[0006] Furthermore, the width of the second heat-sealing indentation is less than or equal to the width of the first heat-sealing indentation.

[0007] Furthermore, the length of the second heat-sealing indentation is 0.5-3 cm.

[0008] Furthermore, the texture of the second heat-sealing indentation is different from the texture of the first heat-sealing indentation.

[0009] Furthermore, at the upper heat seal, the lower end of the second heat seal indentation is flush with the lower end of the first heat seal indentation; at the lower heat seal, the upper end of the second heat seal indentation is flush with the upper end of the first heat seal indentation.

[0010] A heat sealing device for a liquid strip package, comprising a bracket, a mounting frame, a first heat sealing assembly, and a second heat sealing assembly, wherein two mounting frames are symmetrically mounted on the bracket;

[0011] The two first heat sealing components are respectively installed on the top of the two mounting frames and are symmetrically arranged, and the first heat sealing components can achieve sealing of the upper heat sealing opening and the lower heat sealing opening and form a first heat sealing indentation;

[0012] The first heat sealing assembly comprises a first heat sealing block, a first connecting block, a first cylinder, and a first driving rod, wherein the first cylinder is mounted on a mounting frame, a driving end of the first cylinder is connected to the first connecting block via the first driving rod, and the first connecting block is connected to the first heat sealing block;

[0013] The four second heat sealing components are installed on the mounting frame in a left-right symmetrical manner, and the second heat sealing components installed on the same mounting frame are front-back symmetrical. The second heat sealing components can achieve partial sealing of the upper heat sealing opening and the lower heat sealing opening and form a second heat sealing indentation;

[0014] The second heat sealing assembly includes a second heat sealing block, a second connecting block, a second cylinder, and a second driving rod. The second cylinder is installed on the side of the mounting frame and is located below the first heat sealing assembly. The second cylinder is connected to the second driving rod, and the second driving rod is connected to the second heat sealing block through the second connecting block.

[0015] Furthermore, the first heat sealing component also includes a guide rod, and the first connecting block and the mounting frame are respectively provided with corresponding through holes and through holes, one end of the guide rod is connected to the first heat sealing block, and the other end of the guide rod is sequentially penetrated by the through hole and the through hole.

[0016] Furthermore, the guide rods are provided in two groups and are arranged symmetrically front and back.

[0017] Furthermore, it also includes a cooling component, which includes a cold air box and a fan. The two cold air boxes are symmetrically installed on the mounting frame and located between the first heat sealing block and the second heat sealing block. The fan is installed in the cold air box for cooling the bag after heat sealing.

[0018] The advantages and beneficial effects of the utility model are:

[0019] (1) The utility model first seals at the upper heat seal and the lower heat seal through a first heat seal indentation, and then heat seals at the upper heat seal and the lower heat seal where the four-layer structure and the two-layer structure are adjacent to obtain a second heat seal indentation. By superimposing the first heat seal indentation and the second heat seal indentation on each other, the sealing performance at the upper heat seal and the lower heat seal where the four-layer structure and the two-layer structure are adjacent can be effectively improved to avoid leakage.

[0020] (2) In the present invention, the second heat seal indentation has a different pattern from the first heat seal indentation. This arrangement can improve the sealing performance of the junction between the four-layer structure and the two-layer structure on the upper heat seal and the lower heat seal, thereby preventing liquid leakage.

[0021] (3) The utility model drives the first heat sealing block to move toward each other through the first cylinder to form a first heat sealing indentation at the upper heat sealing port or the lower heat sealing port of the bag body; drives the second heat sealing block to move toward each other through the second cylinder to form a second heat sealing indentation at the junction of the four-layer structure and the two-layer structure on the upper heat sealing port and the lower heat sealing port, and the second heat sealing indentation is superimposed on the first heat sealing indentation. The device can improve the sealing performance of the junction of the four-layer structure and the two-layer structure on the upper heat sealing port and the lower heat sealing port to avoid liquid leakage.

[0022] (4) The utility model installs a cooling component between the first heat sealing block and the second heat sealing block, and after forming a first heat sealing indentation at the upper heat sealing port or the lower heat sealing port of the bag body, first cools the bag and then forms a second heat sealing indentation at the upper heat sealing port or the lower heat sealing port, thereby improving the heat sealing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the structure of a liquid strip package in the prior art;

[0024] Figure 2 This is a structural schematic diagram of a liquid stick package described in the utility model;

[0025] Figure 3 is a cross-sectional view of a liquid bar bag body;

[0026] Figure 4 It is a structural schematic diagram of a heat sealing device for liquid strip packages according to the utility model;

[0027] Figure 5 yes Figure 4 A schematic diagram of the structure from a first angle;

[0028] Figure 6 yes Figure 4 A second angle structural diagram of .

[0029] In the figure: bag body 1, upper heat seal 10, lower heat seal 11, first heat seal indentation 12, second heat seal indentation 13, bracket 20, mounting frame 21, first heat seal assembly 22, first heat seal block 220, first connecting block 221, first cylinder 222, first driving rod 223, guide rod 224, second heat seal assembly 23, second heat seal block 230, second connecting block 231, second cylinder 232, second driving rod 233, cooling assembly 24, cold air box 240. DETAILED DESCRIPTION

[0030] The following is a further description of the specific implementation of the present invention in conjunction with the accompanying drawings and embodiments. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and cannot be used to limit the protection scope of the present invention.

[0031] according to Figures 1 to 6 As shown, the utility model is a liquid strip bag, which includes a bag body 1, wherein the upper and lower ends of the bag body 1 are respectively an upper heat seal 10 and a lower heat seal 11, and the left and right ends of the upper heat seal 10 and the lower heat seal 11 are symmetrically moved inwardly, recessed and pleated to form a liquid strip bag with four-layer structures on the left and right ends and a two-layer structure in the middle, the upper heat seal 10 and the lower heat seal 11 are sealed by a first heat seal indentation 12, and the upper heat seal 10 and the lower heat seal 11 are sealed at the junction of the four-layer structure and the two-layer structure by a second heat seal indentation 13, and the second heat seal indentation 13 is superimposed on the first heat seal indentation 12.

[0032] In the above technical scheme, the upper heat seal 10 and the lower heat seal 11 are first sealed by a first heat seal indentation, and then the upper heat seal 10 and the lower heat seal 11 are heat-sealed at the junction of the four-layer structure and the two-layer structure to obtain a second heat seal indentation. By superimposing the first heat seal indentation and the second heat seal indentation for heat sealing, the sealing of the junction of the four-layer structure and the two-layer structure on the upper heat seal 10 and the lower heat seal 11 can be effectively improved to avoid leakage.

[0033] As a preferred embodiment of the above technical solution, the width of the second heat-sealing indentation 13 is less than or equal to the width of the first heat-sealing indentation. Preferably, the width of the second heat-sealing indentation along the longitudinal direction of the bag body is equal to the width of the first heat-sealing indentation.

[0034] As a preferred embodiment of the above technical solution, the length of the second heat-sealing indentation 13 is 0.5-3 cm. The length of the second heat-sealing indentation can be set according to the size of the bag.

[0035] As a preferred embodiment of the above technical solution, the texture of the second heat seal indentation 13 is different from the texture of the first heat seal indentation 12. With this arrangement, the sealing performance of the junction between the four-layer structure and the two-layer structure on the upper heat seal 10 and the lower heat seal 11 can be improved to avoid leakage.

[0036] As a preferred embodiment of the above technical solution, at the upper heat seal 10, the lower end of the second heat seal indentation 13 is flush with the lower end of the first heat seal indentation 12; at the lower heat seal 11, the upper end of the second heat seal indentation 13 is flush with the upper end of the first heat seal indentation 12.

[0037] A heat sealing device for a liquid strip package, comprising a bracket 20, a mounting frame 21, a first heat sealing assembly 22, and a second heat sealing assembly 23, wherein two mounting frames 21 are symmetrically mounted on the bracket 20;

[0038] The two first heat sealing components 22 are respectively installed on the top of the two mounting frames 21 and are symmetrically arranged. The first heat sealing components 22 can achieve sealing of the upper heat sealing opening 10 and the lower heat sealing opening 11 and form a first heat sealing indentation 12;

[0039] The first heat sealing assembly 22 includes a first heat sealing block 220, a first connecting block 221, a first cylinder 222, and a first driving rod 223. The first cylinder 222 is installed on the mounting frame 21. The driving end of the first cylinder 222 is connected to the first connecting block 221 through the first driving rod 223. The first connecting block 221 is connected to the first heat sealing block 220.

[0040] The four second heat sealing components 23 are installed on the mounting frame 21 in a left-right symmetrical manner, and the second heat sealing components 23 installed on the same mounting frame 21 are front-back symmetrical. The second heat sealing components 23 can achieve partial sealing of the upper heat sealing opening 10 and the lower heat sealing opening 11 and form a second heat sealing indentation 13;

[0041] The second heat sealing assembly 23 includes a second heat sealing block 230, a second connecting block 231, a second cylinder 232, and a second driving rod 233. The second cylinder 232 is installed on the side of the mounting frame 21 and is located below the first heat sealing assembly 22. The second cylinder 232 is connected to the second driving rod 233, and the second driving rod 233 is connected to the second heat sealing block 230 through the second connecting block 231.

[0042] In the above technical solution, the first heat sealing block is driven by the first cylinder to move toward each other to form a first heat sealing indentation at the upper heat sealing port or the lower heat sealing port of the bag body; the second heat sealing block is driven by the second cylinder to move toward each other to form a second heat sealing indentation at the junction of the four-layer structure and the two-layer structure on the upper heat sealing port 10 and the lower heat sealing port 11, and the second heat sealing indentation is superimposed on the first heat sealing indentation. The device can improve the sealing performance of the junction of the four-layer structure and the two-layer structure on the upper heat sealing port 10 and the lower heat sealing port 11 to avoid liquid leakage.

[0043] As a preferred embodiment of the above technical solution, the first heat sealing component 22 also includes a guide rod 224, and the first connecting block 221 and the mounting frame 21 are respectively provided with corresponding through holes and through holes, one end of the guide rod 224 is connected to the first heat sealing block 220, and the other end of the guide rod 224 passes through the through hole and the through hole in sequence.

[0044] As a preferred embodiment of the above technical solution, the guide rods 224 are provided in two groups and are symmetrically arranged front to back.

[0045] As a preferred embodiment of the above technical solution, it also includes a cooling component 24, which includes a cold air box 240 and a fan. The two cold air boxes 240 are symmetrically installed on the mounting frame 21 and are located between the first heat sealing block 220 and the second heat sealing block 230. The fan is installed in the cold air box 240 for cooling the bag after heat sealing.

[0046] In the above technical solution, by installing the cooling component between the first heat sealing block and the second heat sealing block, after the first heat sealing indentation is formed on the upper heat sealing port or the lower heat sealing port of the bag body, cooling is performed first, and then the second heat sealing indentation is formed on the upper heat sealing port or the lower heat sealing port to improve the heat sealing effect.

[0047] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A liquid stick package, characterized in that: The bag body (1) comprises an upper heat seal (10) and a lower heat seal (11) at the upper and lower ends of the bag body (1), respectively; the left and right ends of the upper heat seal (10) and the lower heat seal (11) are symmetrically moved inwardly, recessed and folded to form a liquid strip bag with four-layer structures at the left and right ends and a two-layer structure in the middle; the upper heat seal (10) and the lower heat seal (11) are sealed by a first heat seal indentation (12); the upper heat seal (10) and the lower heat seal (11) are sealed at the junction of the four-layer structure and the two-layer structure by a second heat seal indentation (13), and the second heat seal indentation (13) is superimposed on the first heat seal indentation (12).

2. A liquid stick package according to claim 1, characterized in that: The width of the second heat-sealing indentation (13) is less than or equal to the width of the first heat-sealing indentation.

3. A liquid stick package according to claim 2, characterized in that: The length of the second heat-sealing indentation (13) is 0.5-3 cm.

4. A liquid stick package according to claim 3, characterized in that: The texture of the second heat-sealing indentation (13) is different from the texture of the first heat-sealing indentation (12).

5. A liquid stick package according to claim 4, characterized in that: At the upper heat seal opening (10), the lower end of the second heat seal indentation (13) is flush with the lower end of the first heat seal indentation (12); and at the lower heat seal opening (11), the upper end of the second heat seal indentation (13) is flush with the upper end of the first heat seal indentation (12).

6. A heat sealing device for a liquid stick pack according to any one of claims 1 to 5, characterized in that: It comprises a support (20), a mounting frame (21), a first heat sealing assembly (22), and a second heat sealing assembly (23), wherein the two mounting frames (21) are symmetrically mounted on the support (20); The two first heat sealing components (22) are respectively mounted on the top of the two mounting frames (21) and are symmetrically arranged, and the first heat sealing components (22) can achieve sealing of the upper heat sealing opening (10) and the lower heat sealing opening (11) and form a first heat sealing indentation (12); The first heat sealing assembly (22) comprises a first heat sealing block (220), a first connecting block (221), a first cylinder (222), and a first driving rod (223); the first cylinder (222) is mounted on a mounting frame (21); a driving end of the first cylinder (222) is connected to the first connecting block (221) via the first driving rod (223); and the first connecting block (221) is connected to the first heat sealing block (220); The four second heat sealing components (23) are installed on the mounting frame (21) in a left-right symmetrical manner, and the second heat sealing components (23) installed on the same mounting frame (21) are front-back symmetrical, and the second heat sealing components (23) can achieve partial sealing of the upper heat sealing opening (10) and the lower heat sealing opening (11) and form a second heat sealing indentation (13); The second heat sealing assembly (23) comprises a second heat sealing block (230), a second connecting block (231), a second cylinder (232), and a second driving rod (233); the second cylinder (232) is mounted on a side of the mounting frame (21) and is located below the first heat sealing assembly (22); the second cylinder (232) is connected to the second driving rod (233); and the second driving rod (233) is connected to the second heat sealing block (230) via the second connecting block (231).

7. A heat sealing device for liquid stick packages according to claim 6, characterized in that: The first heat sealing assembly (22) further comprises a guide rod (224); the first connecting block (221) and the mounting frame (21) are respectively provided with a through hole and a through hole at corresponding positions; one end of the guide rod (224) is connected to the first heat sealing block (220); and the other end of the guide rod (224) passes through the through hole and the through hole in sequence.

8. A heat sealing device for liquid stick packages according to claim 7, characterized in that: The guide rods (224) are provided in two groups and are arranged symmetrically front and back.

9. A heat sealing device for liquid stick packages according to claim 7, characterized in that: It also includes a cooling component (24), the cooling component (24) including a cold air box (240) and a fan, the two cold air boxes (240) are symmetrically installed on the mounting frame (21) and are located between the first heat sealing block (220) and the second heat sealing block (230), and the fan is installed in the cold air box (240) for cooling the bag after heat sealing.

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