Easily-processed air cushion film group and air cushion film

Abstract

The utility model discloses an air cushion film group easy to process and an air cushion film. Partition areas penetrating through the air column bag set are arranged on the air cushion film set in the transverse direction at intervals, the two sides of each partition area are sealed through heat sealing lines, and therefore the inflation effect of the portions, located outside the partition areas, of the air column bags cannot be affected by easy-to-tear lines formed through cutting in the partition areas. In the production process of the air cushion film group, the easy-to-tear lines do not need to be subjected to high-precision standard following cutting, only the easy-to-tear lines need to be arranged in the partition areas, high production flexibility is achieved, the production efficiency and the yield are improved, the production cost is reduced, and the air cushion film group has good industrial application prospects.

Description

Technical Field

[0001] This utility model belongs to the field of cushioning packaging technology, specifically relating to an easy-to-process air cushion film assembly and air cushion film. Background Technology

[0002] In the logistics and transportation sector, the protective performance of product packaging directly impacts transportation safety and cost efficiency. While traditional cushioning materials (such as foam and molded pulp) offer some protection, they suffer from inherent drawbacks such as poor environmental friendliness, high cost, and low operational efficiency. However, with breakthroughs in new plastic packaging technologies, air cushion films, with their advantages of lightweight, high cushioning, and recyclability, are becoming the mainstream choice for modern logistics packaging.

[0003] The production process of air cushion film mainly consists of four steps: ① Hot pressing: Double-layer film is pressed together at high temperature to form parallel air column bladders and air supply channels, and equidistant markings are completed simultaneously; ② Precision cutting: Based on the marking technology, easy-tear lines are cut at the marked positions to make the film assembly to be inflated; ③ Inflation and sealing: After inflating the film assembly, it is cut along the easy-tear lines to obtain independent air cushion units; ④ Quality inspection: The inflation saturation and sealing integrity of the air column bladders are checked.

[0004] However, the current production process has two major pain points: ① It relies on mechanical label cutting, which limits the production speed and increases the production cost; ② The easy-tear line cutting deviation may damage the air column bladder, causing air leakage or product scrap, and the yield rate fluctuates significantly. Utility Model Content

[0005] The purpose of this invention is to provide an easy-to-process air cushion film assembly and air cushion film. A segmentation area is provided on the air cushion film assembly, and the two lateral sides of the segmentation area are heat-sealed to isolate the segmentation area. An easy-tear line is simply placed within the segmentation area. Through this design, the production process of the air cushion film assembly eliminates the need for label-based cutting, improving production efficiency and reducing production costs, thus possessing significant industrial application value.

[0006] The technical solution of this utility model is as follows:

[0007] An easily processed air cushion film assembly includes an air supply channel and an air column bag assembly. The air column bag assembly includes several air column bags arranged side by side in a transverse direction, and one longitudinal end of each air column bag is connected to the air supply channel.

[0008] The air cushion film group is arranged at intervals along the transverse direction, and the segmented area is overlapped in the area where the air column group or the air column group and the air supply channel are located. It penetrates the air column group in the longitudinal direction and its two transverse sides are sealed by heat sealing lines respectively.

[0009] The segmented area is provided with an easy-tear line along the longitudinal direction, and the longitudinal length of the easy-tear line is greater than or equal to the longitudinal length of the air column group.

[0010] In the above technical solution, a segmentation area is provided that runs through the air column bladder assembly. The two sides of the segmentation area are sealed with heat-sealing lines, ensuring that the tear line formed by cutting within the segmentation area does not affect the inflation effect of the portion of the air column bladder located outside the segmentation area. During the production process of this air cushion film assembly, there is no need for high-precision label-following cutting of the tear line; it is only necessary to ensure that the tear line is placed within the segmentation area. This provides high production flexibility, improves production efficiency and yield, and reduces production costs, demonstrating promising prospects for industrial application.

[0011] In some possible implementations, the dividing area, the tear line, and the air column assembly have the same longitudinal length. In the above technical solution, the air column assembly and the tear line are only provided on the air column assembly, so that the gas can flow smoothly in the air supply channel and the air column assembly can have a high inflation saturation.

[0012] In some possible implementations, one end of the segmented area is connected to the air supply channel in the longitudinal direction. Preferably, the portion of the segmented area near the air supply channel is sealed by a heat-sealing line. In traditional air cushion film assemblies, when the inflation volume is large, some gas may backflow or the air cushion film assembly may rupture due to excessive air pressure. However, when the inflation volume is small, the inflation saturation of the air column will be low, failing to provide a good buffering effect during subsequent use. Therefore, the inflation volume must be precisely set. The above technical solution connects the segmented area to the air supply channel, allowing some gas to flow out of the air cushion film assembly through an easy-tear line. This arrangement increases the flexibility of inflation parameter settings and the structural stability of the air cushion film assembly during inflation. However, when the segmented area is directly connected to the air supply channel, some gas may enter the segmented area, potentially reducing the inflation saturation of the air column assembly. Therefore, preferably, the portion of the segmented area near the air supply channel is sealed by a heat-sealing line, reducing the amount of gas entering the segmented area from the air supply channel and minimizing the impact of the segmented area on inflation saturation.

[0013] In some possible implementations, the maximum lateral length of the segmented area is less than or equal to the maximum lateral length of two parallel air column bags, and the maximum lateral length of the segmented area is greater than or equal to 1 / 4 of the maximum lateral length of the air column bag. In the above technical solution, the lateral length of the segmented area is set appropriately, which can reduce the requirements for production precision while ensuring that the air column bag assembly has a high inflation saturation.

[0014] In some possible implementations, the air column bladder has an inflation port for inflation, through which the air column bladder communicates with the air supply channel; a segmentation zone is disposed between two adjacent inflation ports. In the above technical solution, the area where the segmentation zone is located does not coincide with the inflation port, ensuring that the portion of the air column bladder outside the segmentation zone can be inflated.

[0015] In some possible implementations, the air column assembly includes a first region and a second region distributed longitudinally, wherein the longitudinal length of the first region is greater than or equal to the longitudinal length of the second region, and the air supply channel, the first region, and the second region are connected sequentially.

[0016] The air cushion film assembly is folded along the position between the first region and the second region, and the first region and the second region are connected by a heat-sealing line of the dividing area.

[0017] In some possible implementations, the cross-sectional shape of the air column bladder is a zigzag, wavy, rectangular, or gourd-shaped shape.

[0018] In some possible implementations, the cross-sectional shape of the dividing area is rectangular, and the tear line is a straight line.

[0019] An air cushion film is obtained by cutting the above-mentioned air cushion film assembly along the tear line.

[0020] This utility model has at least the following beneficial effects:

[0021] This invention provides an air cushion film assembly with transversely spaced dividing areas that penetrate the air column assembly. The dividing areas are sealed on both sides by heat-sealing lines, ensuring that the tear lines formed within the dividing areas do not affect the inflation effect of the portion of the air column outside the dividing areas. During the production of this air cushion film assembly, there is no need for high-precision label-following cutting of the tear lines; it is only necessary to ensure that the tear lines are positioned within the dividing areas. This provides high production flexibility, improves production efficiency and yield, and reduces production costs, demonstrating promising prospects for industrial application. Attached Figure Description

[0022] Figure 1 A front view of the air cushion film assembly provided in Example 1;

[0023] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0024] Figure 3 for Figure 1 Enlarged view of point B in the middle;

[0025] Figure 4 This is a front view of the air cushion film provided in Example 1, which is composed of Figure 1 The air cushion film assembly shown is obtained by tearing it along the tear line;

[0026] Figure 5 This is a front view of an intermediate in the production process of the air cushion film assembly provided in Example 2, wherein the intermediate has no dividing area and the air column bladder assembly is not folded.

[0027] Figure 6 This is a front view of the air cushion film assembly provided in Example 2;

[0028] Figure 7 This is a front view of the air cushion film assembly provided in Example 3;

[0029] Figure 8 for Figure 7 Enlarged view of point C in the middle;

[0030] Figure 9 A front view of the air cushion film assembly provided in Comparative Example 1;

[0031] Figure 10 A front view of the air cushion film assembly provided for Comparative Example 2.

[0032] The reference numerals in the diagram are: 1-air supply channel; 2-air column assembly; 21-air column; 211-inflation port; 22-first zone; 23-second zone; 3-dividing zone; 31-heat seal line; 32-easy tear line; 33-opening; 4-buffer zone. Detailed Implementation

[0033] The technical solution of this utility model will be further explained and described below through specific embodiments.

[0034] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are preferred embodiments of the present utility model and should not be considered as excluding other embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0035] The following embodiments only illustrate the technical features related to the technical solution of this application. Any parts not mentioned can be understood or replaced by those skilled in the art using conventional techniques. For example, the air cushion film assembly is obtained by hot-pressing at least two layers of film; the inflation port of the air column is protected from leakage by a one-way valve; and the air supply channel is equipped with an air inlet connected to the inflation device. These technical features are unrelated to the inventive concept of this application and will therefore not be described further.

[0036] Unless otherwise expressly defined, in the claims, description, and accompanying drawings of this utility model, the use of directional terms such as "top," "bottom," "inner," "outer," "upper," "lower," "front," and "rear" to indicate orientation or positional relationships is based on the orientation and positional relationships shown in the drawings and is only for the convenience of describing this utility model and simplifying the description. It does 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 limiting the specific scope of protection of this utility model. The cross-sectional shape referred to herein refers to the shape of the component shown in the front view of the air cushion film assembly.

[0037] Example 1

[0038] This embodiment provides an easily processed air cushion film assembly, such as... Figure 1 As shown, it includes an air supply channel 1 and an air column bag assembly 2.

[0039] Among them, the air column bag group 2 includes several air column bags 21 arranged side by side in a transverse direction, such as Figure 2 As shown, the air column 21 has an inflation port 211. Each air column 21 is connected to the air supply channel 1 through the inflation port 211. The inflation device can inflate the air column 21 through the air supply channel 1.

[0040] The air cushion film assembly has transversely spaced dividing zones 3, which overlap with the area where the air column bladder 21 is located. The transverse sides of the dividing zones 3 are sealed by heat-sealing lines 31, separating the area containing the dividing zones 3 from the air column bladder assembly 2 outside the dividing zones 3. The longitudinal ends of the dividing zones 3 penetrate the air column bladder 21, and their maximum transverse length is approximately 1 / 3 of the maximum transverse length of the air column bladder 21. The dividing zones 3 are located between the inflation ports 211 of two adjacent air column bladders 21, ensuring that the portions of the air column bladder 21 that do not overlap with the dividing zones 3 can be inflated. Furthermore, in this embodiment, the cross-sectional shape of the dividing zones 3 is rectangular. This rectangular shape minimizes the impact of the dividing zones 3 on the inflation saturation of the air cushion film assembly, and also reduces the manufacturing cost of the heat-sealing mold.

[0041] like Figure 3 As shown, a straight tear line 32 is provided along the longitudinal direction in the dividing area 3. Since the tear line 32 is provided in the dividing area 3, cutting the tear line 32 will not cause air leakage in the part of the air column 2 that does not overlap with the dividing area 3.

[0042] Furthermore, in this embodiment, the longitudinal lengths of the dividing area 3, the tear line 32, and the air column assembly 2 are the same. In other possible implementations, when the longitudinal length of the dividing area 3 is greater than that of the air column assembly 2, part of the air column assembly 2 enters the air supply channel 1, causing the air supply channel 1 to become locally narrowed, which may lead to local inflation or even rupture of the air supply channel 1, affecting the inflation of the air column assembly 2. In this embodiment, by setting the longitudinal lengths of the above three components to be the same, the air cushion film assembly can simultaneously possess good tearability and inflation saturation.

[0043] The manufacturing process of the air cushion film assembly is described below. For example, the air cushion film assembly in this embodiment is obtained by hot pressing two layers of film.

[0044] First, at least two layers of film are hot-pressed to form an air supply channel 1 and an air column bladder assembly 2. Then, a pre-defined area on the air column bladder assembly 2 is hot-sealed to form a dividing area 3. Finally, an easy-tear line 32 is cut within the dividing area 3, thus completing the process.

[0045] Compared to traditional air cushion film assembly manufacturing processes, the above-described manufacturing process omits the label-cutting step. The applicant conducted production trials to verify this, resulting in an approximately 50% increase in production efficiency.

[0046] This embodiment also provides a method such as Figure 4 The air cushion film shown is obtained by tearing the air cushion film assembly along the tear line 32.

[0047] Example 2

[0048] The difference between Example 2 and Example 1 is as follows: Figure 5 and Figure 6 As shown, the air column bag group 2 includes a first region 22 and a second region 23 distributed longitudinally, wherein the longitudinal length of the first region 22 is greater than the longitudinal length of the second region 23.

[0049] The air column bladder assembly 2 is folded along the position between the first region 22 and the second region 23 to form a double-layer structure. The dividing area 3 is formed on the air column bladder assembly 2. The heat sealing line 31 on the lateral side of the dividing area 3 heat seals the first region 22 and the second region 23 at the same time, so that the first region 22 and the second region 23 are sealed and connected at the dividing area 3. The air column bladder assembly 2 between two adjacent dividing areas 3 forms a bag.

[0050] The preparation process of the air cushion film assembly in this embodiment is described below:

[0051] First, the film is hot-pressed to form the air supply channel 1 and the air column 2. Then, the air column 2 is folded along the position between the first region 22 and the second region 23. Next, the preset area on the air column 2 is heat-sealed to form the dividing area 3. Finally, the dividing area 3 is cut to form the easy-tear line 32, which is the finished product.

[0052] Example 3

[0053] like Figure 7 and Figure 8 As shown, the difference between Example 3 and Example 1 is that the part of the dividing area 3 near the air supply channel 1 (i.e. the top) is sealed by the heat sealing line 31, while the part of the top that is not sealed forms an opening 33. The dividing area 3 is connected to the air supply channel 1 through the opening 33. Some gas in the air supply channel 1 enters the dividing area 3 and overflows the air cushion film group through the gap of the easy-tear line 32.

[0054] This design ensures that even if the inflation capacity of the inflation device is slightly greater than the inflation capacity required by the air cushion film assembly, the air cushion film assembly is not prone to inflating and bursting.

[0055] Furthermore, the inflation port 211 in Embodiment 3 is a one-way valve to prevent gas in the air column bladder 21 from flowing back into the air supply channel 1. In this embodiment, the dividing area 3 partially overlaps with the inflation port 211, but the air column bladder 21 can still be inflated through the part of the inflation port 211 that does not overlap with the dividing area 3.

[0056] Comparative Example 1

[0057] like Figure 9 As shown, the difference between Comparative Example 1 and Example 1 is that Comparative Example 1 does not include the segmentation region 3.

[0058] In this comparative example, because the easy-tear line 32 was not accurately positioned between two adjacent air column bladders 21, the easy-tear line 32 cut through the film wall of the air column bladder 21, which will cause the air column bladder 21 through which the easy-tear line 32 passes to leak air, affecting the inflation saturation and cushioning performance of the air cushion film assembly.

[0059] Comparative Example 2

[0060] like Figure 10 As shown, the difference between Comparative Example 2 and Example 1 is that Comparative Example 2 does not include the dividing area 3, but by increasing the distance between the two air column bladders 21, a buffer zone 4 for cutting the tear line 32 is provided.

[0061] When the cross-sectional shape of the air column 21 is not rectangular, in order for the buffer to achieve the same segmentation effect as the segmentation area 3 in Example 1, the area of ​​the buffer 4 must be larger than the area of ​​the segmentation area 3 in Example 1. The inflation saturation of Comparative Example 2 is also lower than that of Example 1, and the buffering performance is poor.

[0062] The above description is only a preferred embodiment of the present utility model, and therefore cannot be used to limit the scope of the present utility model. All equivalent changes and modifications made in accordance with the scope of the present utility model patent and the contents of the specification should still fall within the scope of the present utility model.

Claims

1. A processable air cushion film set comprising an air supply channel and an air column bag group, the air column bag group comprising a plurality of air column bags arranged side by side in the transverse direction, one longitudinal end of the air column bags being in communication with the air supply channel, characterized in that: the air cushion film set is provided with a partition region in the transverse direction, the partition region being arranged in the region of the air column bag group or the air column bag group and the air supply channel, extending through the air column bag group in the longitudinal direction and being sealed by heat-sealing lines on both sides in the transverse direction; the partition region is provided with a tear line in the longitudinal direction, the longitudinal length of the tear line being greater than or equal to the longitudinal length of the air column bag group. The longitudinal length of the partition region, the tear line and the air column bag group is the same. One end of the partition region in the longitudinal direction is in communication with the air supply channel.

2. The air mattress film set of claim 1, wherein, The portion of the partition region close to the air supply channel is sealed by a heat-sealing line.

3. The air mattress film set of claim 2, wherein, The maximum transverse length of the partition region is less than or equal to the maximum transverse length of two air column bags arranged side by side, and greater than or equal to 1 / 4 of the maximum transverse length of the air column bag.

4. The air mattress film set of claim 3, wherein, The air column bag has an inflation port for inflation, and the air column bag is in communication with the air supply channel through the inflation port.

5. The air mattress film set of claim 1, wherein, The partition region is arranged between two adjacent inflation ports.

6. The air mattress film set of claim 5, wherein, The air column bag group comprises a first region and a second region distributed in the longitudinal direction, wherein the longitudinal length of the first region is greater than or equal to the longitudinal length of the second region, and the air supply channel, the first region and the second region are in communication in sequence. The air cushion film set is folded at the position between the first region and the second region, and the first region and the second region are connected by the heat-sealing line of the partition region.

7. The air mattress sheet set of any one of claims 1 to 6, wherein, The cross-sectional shape of the air column bag is a broken line, a wave shape, a rectangle or a gourd shape. The cross-sectional shape of the partition region is a rectangle, and the tear line is a straight line.

8. The air mattress film set of claim 1, wherein, The air cushion film set of any one of claims 1-8 is divided along the tear line.

9. The air mattress film set of claim 1, wherein, ​ 10. An air cushion film, characterized by ​

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