Plasma process anti-back corona structure of aluminum plating machine

Abstract

The utility model discloses an anti-back corona structure for a plasma process of an aluminum plating machine, which relates to the technical field of aluminum plating of aluminum plating films and comprises a baffle plate and an insulating seat, the insulating seat is arranged in a vacuum chamber of the aluminum plating machine and supports the baffle plate, and the tail end of the baffle plate extends between the edge of the film and the electrode; the position of the baffle is adjusted along the insulating seat to change the width of the baffle shielding the edge of the film; the baffle is used for shielding between the film edge and the electrode, reverse corona of the film edge is prevented, the film edge is prevented from being subjected to excessive corona treatment, and the heat sealing performance of the aluminum laminated film edge is guaranteed; the width of the baffle shielding the edge of the film can be adjusted, and the anti-back corona effect is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of aluminum plating of aluminum films, in particular to an anti-reverse corona structure of a plasma process of an aluminum plating machine. Background Art

[0002] The plasma process of aluminum-plated film production uses electrode corona discharge to ionize the air, generate plasma and accelerate it to impact the film surface (such as CPP film) under the action of a strong electric field. The energy of these plasma particles is close to the chemical bonds of the molecules on the film surface, which can induce the chemical bonds of the molecules on the film surface to break and degrade, increase the surface roughness, and then increase the surface tension of the film, so that after subsequent aluminum plating, the aluminum layer will be more tightly bonded to the film and will not fall off easily.

[0003] The plasma process is that the discharge electrode of the corona generator performs corona treatment on the outer surface of the cast film conveyed around the corona roller in the vacuum chamber of the aluminum plating machine. During the film corona treatment process, it is necessary to ensure that the front of the aluminum-plated film is fully corona treated, and the back of the film should be avoided from being corona treated. Excessive corona treatment on both sides of the film will damage the sealing performance of the film, reduce the barrier properties, deteriorate the freshness preservation performance, and cause the film layer to stick. In severe cases, the corona will penetrate the micropores and the heat sealing strength will be poor.

[0004] The utility model patent film corona device with publication number CN202702614U has a clamping mechanism, the utility model patent with publication number CN211307768U has a plastic film surface treatment device, and the plastic film production equipment with publication number CN112046038A has a method of avoiding the air between the back side of the film and the corona roller, thereby avoiding the back side corona phenomenon. However, the electrode length in the vacuum chamber is not less than the film width, and the back side of the film edge on the corona roller side is suspended, which will cause the back side of the film edge to produce corona. The back side of the film edge is the heat-sealed part of the package, and the back side corona will make the heat-sealing strength of this part worse, affecting the quality of the aluminum-plated film. Utility Model Content

[0005] The utility model aims to solve the above-mentioned problems in the prior art and to provide an anti-reverse corona structure for a plasma process of an aluminum plating machine.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A back-corona prevention structure for a plasma process of an aluminum plating machine comprises a baffle and an insulating seat; the insulating seat is installed in a vacuum chamber of the aluminum plating machine and supports the baffle, and the end of the baffle extends between the edge of a film and an electrode; the position of the baffle is adjusted along the insulating seat to change the width of the edge of the film blocked by the baffle.

[0008] Furthermore, the baffle is L-shaped, and includes a shielding portion and a connecting portion on both sides of the L-shaped corner.

[0009] Furthermore, the shielding portion is an arc-shaped plate structure.

[0010] Furthermore, the baffle is connected to the insulating seat via a first bolt, and the insulating seat is provided with a strip hole matched with the first bolt, and the extending direction of the strip hole is parallel to the width direction of the film.

[0011] Furthermore, the baffle is connected to a movable seat, and the first bolt is passed through the movable seat.

[0012] Furthermore, the insulating seat is installed in the vacuum chamber of the aluminum plating machine through a second bolt.

[0013] Furthermore, the insulating seat is L-shaped.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] The utility model utilizes a baffle to block between the edge of the film and the electrode to prevent the back side of the edge of the film from corona, avoid excessive corona treatment of the edge of the film, and ensure the heat sealing performance of the back side of the edge of the aluminum-plated film; the width of the baffle to block the edge of the film can be adjusted to ensure the anti-reverse corona effect;

[0016] The utility model supports the baffle plate through the insulating seat to achieve insulating support; the connection position of the baffle plate and the insulating seat can be adjusted through the cooperation of the first bolt and the strip hole, thereby adjusting the width of the edge of the baffle plate shielding film. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional structural schematic diagram of the shielding film state of the utility model.

[0018] Figure 2 It is a schematic diagram of the side view structure of the shielding film state of the utility model.

[0019] Figure 3 It is a schematic diagram of the three-dimensional structure of the utility model from the first viewing angle.

[0020] Figure 4 It is a schematic diagram of the three-dimensional structure of the utility model from a second viewing angle.

[0021] In the figure: 1, baffle; 2, insulating seat; 3, first bolt; 4, strip hole; 5, movable seat; 6, second bolt; 7, CPP film; 8, electrode; 9, corona roller;

[0022] 101. Shielding portion; 102. Connecting portion. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the utility model and are not used to limit the utility model, that is, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. The components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0024] In the description of the present invention, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" that may appear should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the term "provided with" that may appear should be understood in a broad sense. For example, the object "provided with" may be a part of the body, or may be arranged separately from the body and connected to the body, and the connection may be a detachable connection or an inseparable connection. For those skilled in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0026] The present invention is further described in detail below in conjunction with the embodiments.

[0027] The specific embodiment of the anti-reverse corona structure of the aluminum plating machine plasma process provided by the utility model is as follows:

[0028] See also Figure 1-4 The anti-reverse corona structure of the plasma process of the aluminum plating machine includes a baffle 1 and an insulating seat 2; the insulating seat 2 is installed inside the vacuum chamber of the aluminum plating machine, and the vacuum chamber is provided with a corona roller 9 for guiding the cpp film 7, and the cpp film 7 is transported around the corona roller 9, and a corona generator and its electrode 8 are provided on the outer side of the cpp film 7 outside the corona roller 9, and the electrode 8 generates plasma, and the plasma impacts the front of the cpp film 7.

[0029] The insulating seat 2 can be made of oak or hard plastic to play an insulating role; the insulating seat 2 is L-shaped, and is installed in the vacuum chamber of the aluminum plating machine through four second bolts 6. The insulating seat 2 is provided with four through holes that cooperate with the second bolts 6, and gaskets are provided on the outside of the heads of the second bolts 6.

[0030] The baffle 1 is L-shaped, and the material of the baffle 1 can be steel or aluminum alloy; the baffle 1 includes a shielding portion 101 and a connecting portion 102 on both sides of the L-shaped corner; the shielding portion 101 is an arc-shaped plate structure, and the shielding portion 101 is arranged along the width direction of the cpp film 7, and the end of the shielding portion 101 of the baffle 1 extends between the edge of the cpp film 7 and the electrode 8.

[0031] The baffle 1 is between the edge of the CPP film 7 and the electrode 8, shielding the edge of the CPP film 7, weakening the plasma impact on the front side of the edge of the CPP film 7, and weakening the corona on the front side of the edge of the CPP film 7 to a small extent, but can prevent the corona on the back side of the edge of the CPP film 7, thereby ensuring the heat sealing performance on the back side of the edge of the CPP film 7, and avoiding the phenomenon that the back side of the edge of the aluminum-plated film cannot be heat-sealed. There is a gap between the front side of the edge of the CPP film 7 and the baffle 1, so that the front side of the edge of the CPP film 7 has a certain corona effect during the corona process, and the front side of the edge of the CPP film 7 can still be stably combined with the aluminum layer during the subsequent aluminum plating process.

[0032] The insulating seat 2 supports the baffle 1. Specifically, the end of the connecting portion 102 of the baffle 1 is connected to the movable seat 5. Four first bolts 3 are passed through the movable seat 5. The movable seat 5 is provided with four through holes that cooperate with the first bolts 3. The movable seat 5 is connected to the insulating seat 2 by the first bolts 3, so that the baffle 1 and the insulating seat 2 are connected through the first bolts 3.

[0033] In this embodiment, two strip holes 4 are provided on the insulating seat 2 to cooperate with the first bolts 3, and the extension direction of the strip holes 4 is parallel to the width direction of the CPP film 7; every two first bolts 3 pass through a strip hole 4, and a nut is provided on the outer side of the end of the first bolt 3, and a gasket is provided on the outer side of the first bolt 3 on the side of the nut facing the insulating seat 2. The movable seat 5 and the baffle 1 can be positioned by tightening the nut, and the connection position of the movable seat 5 and the baffle 1 with the insulating seat 2 can be adjusted by loosening the first bolt 3.

[0034] In this way, the position of baffle 1 can be adjusted along insulating seat 2, and the width of baffle 1 shielding the edge of cpp film 7 can be adjusted and changed, and then the position of baffle 1 is determined. In actual installation, the appropriate width of baffle 1 shielding cpp film 7 is determined to ensure the anti-corona effect.

[0035] Finally, it should be noted that the above is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments without creative work, or replace some of the technical features therein with equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A plasma process anti-reverse corona structure for an aluminum plating machine, characterized in that: It comprises a baffle (1) and an insulating seat (2); the insulating seat (2) is installed in a vacuum chamber of an aluminum plating machine and supports the baffle (1); the end of the baffle (1) extends into between the edge of the film and the electrode (8); the position of the baffle (1) is adjusted along the insulating seat (2) so that the width of the baffle (1) shielding the edge of the film changes.

2. The anti-reverse corona structure of the aluminum plating machine plasma process according to claim 1 is characterized in that: The baffle (1) is L-shaped, and comprises a shielding portion (101) and a connecting portion (102) on both sides of the L-shaped corner.

3. The anti-reverse corona structure of the aluminum plating machine plasma process according to claim 2 is characterized in that: The shielding portion (101) is an arc-shaped plate structure.

4. The anti-reverse corona structure of the aluminum plating machine plasma process according to claim 1, 2 or 3, characterized in that: The baffle (1) is connected to the insulating seat (2) via a first bolt (3); a strip hole (4) is provided on the insulating seat (2) and matches the first bolt (3); the extending direction of the strip hole (4) is parallel to the width direction of the film.

5. The anti-reverse corona structure of the aluminum plating machine plasma process according to claim 4 is characterized in that: The baffle (1) is connected to a movable seat (5), and the movable seat (5) is penetrated by the first bolt (3).

6. The anti-reverse corona structure of the aluminum plating machine plasma process according to claim 1, characterized in that: The insulating seat (2) is installed in the vacuum chamber of the aluminum plating machine via a second bolt (6).

7. The anti-reverse corona structure of the aluminum plating machine plasma process according to claim 1 or 6, characterized in that: The insulating seat (2) is L-shaped.

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