Attaching process for outer packaging film of plastic container

Abstract

The invention provides an attaching process for an outer packaging film of a plastic container, and belongs to the technical field of beverage containers. The problem that in the prior art, when an outer packaging film is attached to a plastic container, the attaching quality is not high is solved. The attaching process of the outer packaging film of the plastic container is characterized by comprising the following steps that A, the plastic container is sleeved with the cylindrical outer packaging film, and the plastic container is filled with high-pressure gas for pressure maintaining; b, heating for the first time: locally heating the middle part of the outer packaging film, so that the middle part of the outer packaging film is thermally shrunk and is attached to the outer wall of the cylindrical middle part of the plastic container; c, heating for the second time: integrally heating the outer packaging film, so that the outer packaging film is thermally shrunk and integrally attached to the outer wall of the plastic container. The whole surface of the outer packaging film can be fully thermally shrunk, and wrinkles or bubbles are reduced, so that the outer packaging film can be better attached to the surface of a plastic container, and the attaching quality is better.

Description

Technical Field

[0001] The invention belongs to the technical field of beverage container processing and relates to a process for attaching an outer packaging film of a plastic container. Background Art

[0002] Plastic containers are widely used in various scenarios where alcoholic beverages need to be stored, such as family life, corporate gatherings, outdoor activities, etc. Existing plastic containers are generally made of PC (polycarbonate) or PET (polyethylene terephthalate). Usually, a fixed outer packaging film is attached to the surface of the plastic container. On the one hand, the outer packaging film can display product information and play a role in publicity and beauty. On the other hand, during transportation, storage and sales, the outer packaging film can also prevent the surface of the plastic container from being worn and play a role in protecting the plastic container.

[0003] The outer packaging film of existing plastic containers generally involves first putting a cylindrical outer packaging film on the plastic container, and then heating the outer packaging film so that the outer packaging film shrinks due to heat and adheres to the outer wall of the plastic container. Since electric heating pipes or hot air blowers have the advantages of high heating efficiency, easy control of heating temperature, relatively simple heating equipment and convenient maintenance, and the two heating methods can also ensure that the inner wall of the plastic container remains dry and clean, therefore, in the existing conventional technology, hot air blowers or electric heating pipes are usually used to heat the outer packaging film. For example, a new type of heat shrink film packaging machine (201610635866.9) disclosed in the patent document includes a machine tool and a heat shrink box, a transmission chain belt is provided on the upper end surface of the machine tool, and a symmetrically distributed hot air blower is provided above the heat shrink box through an embedded connection. When in use, the transmission chain belt is started, and the container of the packaged heat shrink film is placed on the transmission chain belt, and the transmission chain belt transports the plastic container into the heat shrink box, and the heat shrink film is heated by the hot air blower, so that the heat shrink film is heat-shrunk and attached to the outer wall of the container.

[0004] The above heat shrink film packaging machines have the following deficiencies in the actual production process:

[0005] The heat shrink film packaging machine adopts the conventional hot air blower heating method. Although the heating efficiency is high and the heating temperature is easy to control, when the outer packaging film packaging machine is used for processing plastic containers, since the top and bottom of the plastic container generally have a concave-convex structured irregular surface, when the hot air blower heats the outer packaging film, i.e., the heat shrink film, at the irregular surface, the concave-convex structured irregular surface will form a barrier to the hot air, so the hot air cannot evenly cover the irregular surface, causing the outer packaging film at the irregular surface to shrink unevenly during the heating process, thereby causing the outer packaging film to move in certain directions, which will affect the position accuracy of the outer packaging film on the plastic container, causing the attached outer packaging film to tilt or be poorly aligned, thereby affecting the attachment quality of the outer packaging film and the overall appearance of the product.

[0006] In the prior art, when affixing an outer packaging film to a plastic container, the technicians in this field face the problem of low attachment quality. Usually, the following conventional techniques are used to avoid the above technical problems:

[0007] 1. Try to reduce the concave-convex structure on the surface of the plastic container, adopt a smoother surface design, or make the outer packaging film avoid the irregular surface with concave-convex structure to improve the attachment quality of the outer packaging film.

[0008] 2. By increasing the number of hot air blowers, the hot air can evenly cover the irregular surface, ensuring that the outer packaging film on the irregular surface shrinks evenly during the heating process, thereby improving the attachment position accuracy and attachment quality of the outer packaging film.

[0009] 3. Optimize the heating temperature and time. By adjusting the heating temperature and heating time of the electric heating tube or hot air blower, avoid overheating of the outer packaging film, make the outer packaging film shrink slowly and evenly, and improve the attachment quality of the outer packaging film. Summary of the invention

[0010] The purpose of the present invention is to solve the above problems in the existing technology and propose a process for attaching outer packaging film to plastic containers. The present invention solves the problem of low attachment quality when the existing process is used to attach outer packaging film to plastic containers.

[0011] The object of the present invention can be achieved by the following technical scheme: A process for attaching an outer packaging film of a plastic container, characterized in that the process comprises the following steps:

[0012] A. A cylindrical outer packaging film is arranged outside the plastic container, and the plastic container is filled with high-pressure gas to maintain pressure;

[0013] B. First heating: locally heating the middle part of the outer packaging film so that the middle part of the outer packaging film is thermally shrunk and adhered to the cylindrical middle outer wall of the plastic container;

[0014] C. Second heating: The outer packaging film is heated as a whole to shrink the outer packaging film and adhere it as a whole to the outer wall of the plastic container.

[0015] Usually, the middle outer wall of a plastic container is cylindrical, and the top and bottom have concave-convex structures, so the shape is relatively complex. Therefore, when the outer packaging film is put on the plastic container and before the outer packaging film is heated, the middle of the outer packaging film and the middle of the plastic container have a good match, and the shape of the outer wall in the middle of the plastic container is more regular. Therefore, through the first heating, the middle of the outer packaging film is first heat-shrunk and attached to the middle of the plastic container, and the attachment position of the outer packaging film can be more accurately located. However, since the middle of the plastic container has no concave-convex structure for structural reinforcement, its deformation resistance is relatively small, and when heated for the first time, the shrinkage pressure of the outer packaging film is all concentrated in the middle of the plastic container. Therefore, how to ensure the accuracy of the outer packaging film attachment position during the first heating also requires solving the problem of compression deformation of the middle of the plastic container. At this time, before the first heating, high-pressure gas is filled into the plastic container to maintain the pressure. In this way, during the heating of the outer packaging film, the filled gas can resist the shrinkage force of the outer packaging film, so that the plastic container always maintains its original shape, avoiding deformation of the middle part of the plastic container due to the shrinkage force of the outer packaging film during the first heating. Therefore, the outer packaging film can be accurately attached to the position and have good attachment stability during the first heating process. In this way, during the second heating of the outer packaging film, when the outer packaging film is attached to the surface of a plastic container with a more complex shape, the outer packaging film will not tilt or shift, thereby ensuring the accurate attachment position of the outer packaging film and the attachment quality.

[0016] In the above-mentioned process of attaching the outer packaging film of the plastic container, the plastic container in step B is conveyed by a conveyor belt, and the lower end edge of the outer packaging film is supported by the support strips on both sides of the conveyor belt during the conveying process to position the height of the outer packaging film relative to the plastic container. After the plastic container is placed on the conveyor belt, the bottom of the plastic container is supported by the conveyor belt, and the lower end edge of the outer packaging film is supported by the support strips on both sides of the conveyor belt. This design allows the upper and lower positions of the outer packaging film relative to the plastic container to be positioned during the first heating process, so that the outer packaging film can be fixed in a precise position after the first heating, ensuring that the outer packaging film has better attachment quality. Transporting plastic containers by conveyor belts can improve the degree of automation and thus improve production efficiency.

[0017] In the above-mentioned process of attaching the outer packaging film of the plastic container, after step B is completed, the plastic container continues to be conveyed forward with the conveyor belt. During the conveying process, the lower end edge of the outer packaging film is separated from the support strips on both sides of the conveyor belt, and then the second heating described in step C is performed.

[0018] This method not only allows the outer packaging film to undergo a "cooling" process without heating for a period of time after the first heating, thereby reducing the temperature of the outer packaging film and enhancing the adhesion of the outer packaging film, but also enables the outer packaging film to be more stably attached to the outer wall of the plastic container and enter the second heating process.

[0019] During the second heating, the bottom of the outer packaging film needs to shrink radially inward to adhere to the bottom of the plastic container. After the first heating is completed, the outer packaging film has been positioned on the plastic container. Therefore, during the second heating process, the lower end edge of the outer packaging film is separated from the support strips on both sides of the conveyor belt, and the outer packaging film will not fall down. At the same time, the bottom of the outer packaging film will not interfere with the support strips during the radial inward contraction process, ensuring that the bottom of the outer packaging film can be thermally contracted smoothly and the adhesion quality can be improved.

[0020] In the above-mentioned process of attaching the outer packaging film of the plastic container, the duration of the first heating is 6S-15S, and in step C, the duration of the second heating is 20S-50S. During the first heating process, since only the middle part of the outer packaging film needs to be heated to attach to the middle outer wall of the plastic container, the required time is short, which can improve the processing efficiency. The second heating lasts longer, which can ensure that the outer packaging film has sufficient time to shrink uniformly, avoiding the phenomenon of excessive or insufficient shrinkage of some areas of the outer packaging film, thereby better avoiding the phenomenon of wrinkles or bubbles after the outer packaging film is thermally shrunk, so that the outer packaging film has better overall appearance and attachment quality.

[0021] In the actual manufacturing process, the first and second heating can be performed with normal pressure steam at a temperature of about 100 degrees Celsius, the first heating lasts for 10 seconds, and the second heating lasts for 30 seconds. Because the conveyor belt is moving forward with the plastic container, the heating duration can be controlled by controlling the conveying speed of the conveyor belt.

[0022] In the above-mentioned process for attaching the outer packaging film of the plastic container, the heating methods of the first heating in step B and the second heating in step C are both steam heating. Since the plastic container needs to be in a sealed state for pressure maintenance, when the outer packaging film is heated by steam, the steam will not enter the inner cavity of the plastic container to cause residual liquid on the inner wall of the plastic container. Since the steam has fluidity, when the outer packaging film is heated by steam, the steam can provide uniform heat, so that the entire surface of the outer packaging film can be fully heat-shrunk, reducing the formation of wrinkles or bubbles caused by local overheating, so that the outer packaging film can better fit the surface of the plastic container and have better attachment quality.

[0023] In the above-mentioned process of attaching the outer packaging film of the plastic container, the first heating in step B is specifically as follows: the conveyor belt conveys the plastic container to a first heating chamber, the first heating chamber has two first steam injectors respectively located above both sides of the conveyor belt, the first steam injectors have a first jet outlet facing the middle of the outer packaging film, the plastic container is conveyed forward between the two first steam injectors, and at the same time, the first jet outlets of the two first steam injectors spray water vapor to heat the outer packaging film for the first time.

[0024] The two first steam ejectors can respectively eject water vapor from both sides of the plastic container. At this time, since the water vapor is fluid and the plastic container is not fixed but continuously moves forward between the two first steam ejectors along the conveyor belt, the middle part of the outer packaging film can be evenly heated by the water vapor, so that the middle part of the outer packaging film shrinks evenly and effectively, ensuring that after the first heating is completed, the middle part of the outer packaging film can be stably attached to the outer wall of the plastic container with good attachment quality.

[0025] In the above-mentioned process of attaching the outer packaging film of the plastic container, the second heating in step C is specifically as follows: the conveyor belt conveys the plastic container to a second heating chamber, the second heating chamber has two second steam injectors respectively located above both sides of the conveyor belt, each of the second steam injectors has at least three second jet ports arranged in sequence up and down, the plastic container is conveyed forward between the two second steam injectors, and at the same time, the second jet ports of the two second steam injectors spray water vapor to heat the outer packaging film for the second time.

[0026] The two second steam ejectors can respectively eject water vapor from both sides of the plastic container, and at least three second air jets arranged in sequence up and down make the second heating chamber evenly filled with water vapor. At this time, since the water vapor is still fluid, and the plastic container is not fixed but continuously moves forward between the two second steam ejectors with the conveyor belt, all parts of the outer packaging film can be well heated by the water vapor, so that the outer packaging film is heated evenly as a whole, and wrinkles or bubbles caused by local overheating of the outer packaging film are reduced, so that the outer packaging film can be better adhered to the surface of the plastic container and has better adhesion quality.

[0027] By providing the first heating chamber and the second heating chamber, heat can be concentrated in the first heating chamber and the second heating chamber as much as possible, thereby reducing heat loss and making the heating process safer.

[0028] In the above-mentioned process of attaching the outer packaging film of the plastic container, the pressure of the gas filled in the plastic container is 1.1BAR-1.3BAR. The pressure within this range can ensure that the plastic container can well resist the shrinkage force of the external outer packaging film and reduce the deformation of the container due to heating, while not causing excessive pressure inside the plastic container to cause deformation or even rupture of the plastic container. Preferably, the pressure value is 1.2BAR. In the actual production process, the gas filled in the plastic container is air or an inert gas. Filling with air has the advantage of low cost, and nitrogen is preferably used as the inert gas. Nitrogen has stable chemical properties and can reduce safety hazards. Moreover, nitrogen has a bactericidal effect. When the wine is filled into the plastic container at a later stage, it can ensure that the wine has a good purity.

[0029] Compared with the prior art, the attachment process of the outer packaging film of the plastic container has the following advantages:

[0030] 1. Before heating, there is a process of filling gas into the plastic container to make the pressure inside the plastic container higher than the atmospheric pressure for pressure maintenance. In this way, during the heating process of the outer packaging film, the filled gas can resist the shrinkage force of the outer packaging film, avoiding the deformation of the plastic container due to the shrinkage force of the outer packaging film, so that the plastic container always maintains its original shape, and the outer packaging film will not form wrinkles or bubbles after heat shrinkage, ultimately ensuring that the outer packaging film has a good overall appearance and adhesion quality.

[0031] 2. The outer packaging film is heated twice. The first heating process can quickly and stably pre-position the outer packaging film on the outer wall of the plastic container, and make the outer packaging film attached to the position accurately. In this way, during the second heating process of the outer packaging film, the outer packaging film can be better heated as a whole, avoiding the displacement or deflection of the outer packaging film, which may lead to reduced attachment quality.

[0032] 3. Use steam to heat the outer packaging film. Since steam is fluid, it can provide uniform heat, so that the entire surface of the outer packaging film can fully shrink, reducing the formation of wrinkles or bubbles caused by local overheating, so that the outer packaging film can better fit the surface of the plastic container and have better adhesion quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a structural schematic diagram of the attachment equipment corresponding to the present attachment process.

[0034] Figure 2 yes Figure 1 A partial enlarged view of the .

[0035] Figure 3 It is a cross-sectional view of the outer packaging film attached to the outer wall of the plastic container.

[0036] Figure 4 It is a schematic diagram of the plastic container in Example 9 being placed on the conveyor belt in an inverted state.

[0037] In the figure, 1, outer packaging film; 2, plastic container; 3, conveyor belt; 4, support bar; 5, first heating chamber; 6, first steam injector; 61, first jet outlet; 7, second heating chamber; 8, second steam injector; 81, second jet outlet. DETAILED DESCRIPTION

[0038] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0039] Embodiment 1

[0040] The attaching process of the outer packaging film of the plastic container comprises the following steps:

[0041] 1. Fill the plastic container 2 with nitrogen until the pressure in the inner cavity of the plastic container 2 reaches 1.2 BAR, then stop filling. Then, the plastic container 2 is sealed to maintain the pressure.

[0042] 2. Place the plastic container 2 filled with nitrogen on the conveyor belt 3 that continuously transports forward.

[0043] 3. If Figure 1 and Figure 2 As shown, a cylindrical outer packaging film 1 is sleeved on a plastic container 2 to ensure that the lower end edge of the outer packaging film 1 abuts against the support strips 4 on both sides of the conveyor belt 3 to position the height of the outer packaging film 1 relative to the plastic container 2 .

[0044] 4. First heating: Figure 1 As shown, the conveyor belt 3 conveys the plastic container 2 to the first heating chamber 5. The first heating chamber 5 has two first steam ejectors 6 located above the two sides of the conveyor belt 3, respectively. The first steam ejectors 6 have a first jet port 61 facing the middle of the outer packaging film 1. The plastic container 2 moves forward between the two first steam ejectors 6. At the same time, the first jet ports 61 of the two first steam ejectors 6 eject normal pressure steam to heat the outer packaging film 1 for the first time, and the duration is 10S. The first heating process utilizes steam to locally heat the middle of the outer packaging film 1, so that the middle of the outer packaging film 1 shrinks and adheres to the cylindrical middle outer wall of the plastic container 2. After the first heating is completed, the plastic container 2 leaves the first heating chamber 5 with the conveyor belt 3. After the conveyor belt 3 continues to transport the plastic container 2 forward for a distance, the edge of the lower end of the outer packaging film 1 is separated from the support bars 4 on both sides of the conveyor belt 3.

[0045] 5. Second heating: Figure 1As shown, the conveyor belt 3 conveys the plastic container 2 to the second heating chamber 7. The second heating chamber 7 has two second steam injectors 8 located above the two sides of the conveyor belt 3, each of which has at least three second jet ports 81 arranged in sequence from top to bottom. The plastic container 2 moves forward between the two second steam injectors 8, and at the same time, the second jet ports 81 of the two second steam injectors 8 spray water vapor to heat the outer packaging film 1 for the second time, which lasts for 30 seconds. The second heating process uses water vapor to heat the outer packaging film 1 as a whole, so that the outer packaging film 1 shrinks and adheres to the outer wall of the plastic container 2 as a whole, forming a plastic container 2 as shown in FIG. Figure 3 The structure shown.

[0046] 6. A handle and a base are installed on the top and bottom of the plastic container 2, respectively, so that the handle presses the edge of the upper end of the outer packaging film 1, and the base presses the edge of the lower end of the outer packaging film 1. In this way, during the transportation of the plastic container 2, the impact, extrusion or friction of external forces will not directly act on the edge of the outer packaging film 1, but will be blocked by the handle or the base, thereby preventing the edge of the outer packaging film 1 from being lifted, wrinkled or even torn due to external forces.

[0047] In the attachment process of the outer packaging film of the plastic container, since there is a process of filling gas into the plastic container 2 before heating, the pressure in the plastic container 2 is maintained higher than the atmospheric pressure. In this way, during the heating process of the outer packaging film 1, the filled gas can increase the pressure in the inner cavity of the plastic container 2, thereby resisting the shrinkage force of the external outer packaging film 1, reducing the deformation of the container caused by heating, so that the outer wall shape of the plastic container 2 maintains the initial shape, especially ensuring that the thinner wall thickness of the plastic container 2 does not deform and rebound. In this way, during the heat shrinkage of the outer packaging film 1, the outer packaging film 1 can better fit the outer wall of the plastic container 2 for heat shrinkage, avoiding the phenomenon that the corresponding area of ​​the outer packaging film 1 shrinks too much or too little due to the deformation and rebound of the plastic container 2, thereby avoiding the phenomenon that wrinkles or bubbles are formed after the outer packaging film 1 shrinks, so that the outer packaging film 1 has better overall appearance and attachment quality.

[0048] Embodiment 2

[0049] The specific operations of this embodiment are basically the same as those of the first embodiment, except that in step 1, nitrogen is filled into the plastic container 2, and the filling is stopped when the pressure of the inner cavity of the plastic container 2 reaches 1.1 BAR, and then the plastic container 2 is kept in a sealed state to maintain the pressure.

[0050] Embodiment 3

[0051] The specific operations of this embodiment are basically the same as those of the first embodiment, except that in step 1, nitrogen is filled into the plastic container 2, and the filling is stopped when the pressure of the inner cavity of the plastic container 2 reaches 1.3 BAR, and then the plastic container 2 is kept in a sealed state to maintain the pressure.

[0052] Embodiment 4

[0053] The specific operations of this embodiment are basically the same as those of the first embodiment, except that in step 1, the gas filled into the plastic container 2 is air, which has the advantage of low cost.

[0054] Embodiment 5

[0055] The specific operations of this embodiment are basically the same as those of the first embodiment, except that in step 4, the duration of the first heating is 6 seconds.

[0056] Embodiment 6

[0057] The specific operations of this embodiment are basically the same as those of the first embodiment, except that in step 4, the duration of the first heating is 15 seconds.

[0058] Embodiment 7

[0059] The specific operations of this embodiment are basically the same as those of the first embodiment, except that in step 6, the heating duration of the second heating is 20 seconds.

[0060] Embodiment 8

[0061] The specific operations of this embodiment are basically the same as those of the first embodiment, except that in step 6, the heating duration of the second heating is 50 seconds.

[0062] Embodiment 9

[0063] The specific operations of this embodiment are basically the same as those of the first embodiment, except that: in step 2, Figure 4 As shown, the plastic container 2 is placed on the conveyor belt 3 in an inverted state, with the bottom of the plastic container 2 facing upward. During actual operation, a support base can be connected to the barrel mouth of the plastic container 2, so that the plastic container 2 can be stably placed on the conveyor belt 3.

[0064] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

[0065] Although the terms 1, outer packaging film; 2, plastic container; 3, conveyor belt; 4, support bar; 5, first heating chamber; 6, first steam ejector; 61, first jet port; 7, second heating chamber; 8, second steam ejector; 81, second jet port are used more frequently in this article, the possibility of using other terms is not excluded. The use of these terms is only for more convenient description and explanation of the essence of the present invention; interpreting them as any additional limitation is contrary to the spirit of the present invention.

Claims

1. A process for attaching outer packaging film of a plastic container, characterized in that: The attachment process includes the following steps: A. A cylindrical outer packaging film (1) is disposed outside a plastic container (2), and the plastic container (2) is filled with high-pressure gas to maintain pressure; B. First heating: locally heating the middle portion of the outer packaging film (1) so that the middle portion of the outer packaging film (1) is thermally shrunk and adheres to the cylindrical middle outer wall of the plastic container (2); C. Second heating: The outer packaging film (1) is heated as a whole, so that the outer packaging film (1) is thermally shrunk and is entirely attached to the outer wall of the plastic container (2).

2. The process for attaching the outer packaging film of a plastic container according to claim 1, characterized in that: In step B, the plastic container (2) is conveyed by a conveyor belt (3). During the conveying process, the support strips (4) on both sides of the conveyor belt (3) are used to support the lower end edge of the outer packaging film (1) to position the height of the outer packaging film (1) relative to the plastic container (2).

3. The process for attaching the outer packaging film of a plastic container according to claim 2, characterized in that: After step B is completed, the plastic container (2) continues to be transported forward along the conveyor belt (3). During the transportation process, the lower end edge of the outer packaging film (1) is separated from the support strips (4) on both sides of the conveyor belt (3), and then the second heating described in step C is performed.

4. The process for attaching the outer packaging film of a plastic container according to claim 1, 2 or 3, characterized in that: In step B, the duration of the first heating is 6S-15S, and in step C, the duration of the second heating is 20S-50S.

5. The process for attaching the outer packaging film of a plastic container according to claim 1, 2 or 3, characterized in that: The heating methods for the first heating in step B and the second heating in step C are both steam heating.

6. The process for attaching the outer packaging film of a plastic container according to claim 2 or 3, characterized in that: The first heating in step B is specifically as follows: the conveyor belt (3) conveys the plastic container (2) to a first heating chamber (5), the first heating chamber (5) has two first steam injectors (6) respectively located above the two sides of the conveyor belt (3), the first steam injectors (6) have a first jet outlet (61) facing the middle of the outer packaging film (1), the plastic container (2) is conveyed forward between the two first steam injectors (6), and at the same time, the first jet outlets (61) of the two first steam injectors (6) spray water vapor to heat the outer packaging film (1) for the first time.

7. The process for attaching the outer packaging film of a plastic container according to claim 2 or 3, characterized in that: The second heating in step C specifically comprises: the conveyor belt (3) conveys the plastic container (2) to the second heating chamber (7); the second heating chamber (7) has two second steam injectors (8) respectively located above the two sides of the conveyor belt (3); each of the second steam injectors (8) has at least three second jet ports (81) arranged in sequence up and down; the plastic container (2) is conveyed forward between the two second steam injectors (8); and at the same time, the second jet ports (81) of the two second steam injectors (8) spray water vapor to heat the outer packaging film (1) for the second time.

8. The process for attaching the outer packaging film of a plastic container according to claim 1, 2 or 3, characterized in that: The pressure of the gas filled into the plastic container (2) is 1.1 BAR-1.3 BAR.

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