KR102260578B1 - Method and apparatus for removing oil layer of food packaging material - Google Patents

Abstract

The present invention relates to an oil film removal device and a method for removing an oil film from a food packaging material, comprising: an electric discharge unit having an electrode part of a positive (+) electrode and a negative (-) electrode and arranged to form a spark gap by arranging the gap between the electrodes; A food packaging material that burns and removes an oil film attached to the surface of the packaging material with spark energy generated during discharge by controlling the discharge to occur while sparks pop between the electrodes by applying a voltage to the positive (+) and negative (-) electrodes of oil film removal device and oil film removal method.
According to the present invention, only the oil film on the surface of the foil or film, which is often used as a food packaging material, can be burned and removed without damage to the food packaging material through spark discharge by electric discharge. By removing the oil film, it is possible to improve the adhesion between the layers, thereby preventing the phenomenon of easy peeling between the layers, thereby reducing the occurrence of defects in food packaging and increasing productivity.

Description

Oil film removal device and method for removing oil film from food packaging materials {METHOD AND APPARATUS FOR REMOVING OIL LAYER OF FOOD PACKAGING MATERIAL}

The present invention relates to an oil film removal apparatus and a method for removing an oil film from a food packaging material, and more particularly, an oil film removal apparatus for a food packaging material that can easily remove an oil film attached to the surface of a foil or film used for food packaging, and It relates to a method of removing the oil film.

In general, in the distribution of food, etc., a predetermined amount is measured and the food measured in such a predetermined amount is individually packaged and then distributed. For packaging food, a food packaging material such as a packaging film is used.

As such, the packaging material used for packaging food is made in consideration of sealing properties, waterproofness, air permeability, antibacterial properties, etc. according to the characteristics of the food, and is manufactured in various forms. Paper or film is mainly used, but sometimes paper or paper is used depending on the contents. It is produced and used as a composite for laminating film and film or film and film.

For example, PET film, OPP film, PE film, PP film, aluminum film, LLDPE film, nylon film, CPR film, etc. are currently used as food packaging materials. It is laminated to form a composite film of two or more layers.

Such a composite film is also referred to as a multi-layer packaging material, and refers to a packaging material such as a foil made using materials such as a plastic film or aluminum foil of several layers instead of a single layer.

Here, the foil is produced in various ways, such as by depositing aluminum on a substrate such as a PP film or laminating an aluminum material.

As described above, in the case of laminating packaging materials, a laminating machine, which is a mechanical device, is used for automated production, and most of them are laminating through a rollutol process to ensure productivity.

In other words, in the laminating machine, a supply roll, a winding roll, and a plurality of conveying guide rollers are installed and used organically, and an adhesive applying device is provided to apply an adhesive to be used for laminating between films during the conveying process, The adhesive applying device is installed by a roller method or a spray method.

However, when performing a lamination process on a production line for the manufacture of packaging materials, including such food packaging materials, or when producing a composite film, an adhesive is applied and attached between the film and the film (or foil), but the mutual adhesion between the laminated packaging materials There was a problem in that a defective product was generated due to the separation and peeling.

Although the problem of lack of adhesion between packaging materials is occurring, the industry manufacturing food packaging materials is performing only the method of replacing the adhesive or replacing the laminating equipment used in most cases.

The applicant of the present application has become concerned with the problem of lack of adhesion between packaging materials that occurs during the production of food packaging materials as described above, and for this, the oil film attached to the surface of the film or foil used as the packaging material is the main We judged it as an impeding factor and carried out research and efforts to remove the oil film from the packaging material, and developed a technology that can efficiently remove the oil film on the surface from the packaging material during the production line, and we would like to propose it below.

In addition, various packaging materials such as films or foils used as food packaging materials are manufactured, distributed and stored indispensably in the form of having an oil film on the surface during their own production process. When it is put into a production line such as paper, it is in a situation that only a cleaning process is performed to simply remove dust or foreign substances that may be attached to the surface by means of air pressure spraying or the like.

On the other hand, in the prior art, in the manufacture or production of food packaging materials, there was no prior art literature that removes the surface oil film basically possessed by various packaging materials such as films or foils, and the oil film on automobile glass or machine tools was not found. As most of the techniques for removing the ions are disclosed, there is a particular difference in using a composition having a chemical component or using a device such as a wiper.

Republic of Korea Patent Publication No. 10-1984704 Republic of Korea Patent Publication No. 10-1072570

The present invention has been devised in consideration of and solving the above-mentioned problems of the prior art, and is an oil film removal device for food packaging materials that can be easily removed by dry treatment of an oil film on the surface of a packaging material such as a foil or film used for food packaging And it is an object of the present invention to provide a method for removing the oil film.

The present invention provides an oil film removal device and a method for removing an oil film from a food packaging material that can be burned and removed without damage to the food packaging material through a spark discharge by electric discharge for a foil or film, etc., which are often used as food packaging materials but it has a purpose.

The present invention improves the adhesion between layers according to the removal of the oil film during the production of composite films or the lamination treatment of food packaging materials by burning only the oil film on the surface of the foil or film, which is often used as a food packaging material, by flame discharge. An object of the present invention is to provide an oil film removal device and a method for removing an oil film of a packaging material, which can reduce the occurrence of defects in food packaging materials, such as preventing easy peeling, and increase productivity.

An apparatus for removing an oil film from a food packaging material according to the present invention for achieving the above object includes: an electric discharge unit having an electrode part of a positive (+) electrode and a negative (-) electrode and arranged at an interval between the electrodes to form a spark gap; Including, by applying a voltage to the positive (+) electrode and the negative (-) electrode and controlling the discharge to occur while sparks are sputtered between the electrodes, the flame energy generated during discharge is used to burn and remove the oil film on the surface of the food packaging material. characterized in that

Here, the electric discharge unit is installed on a laminating machine for laminating while transporting the food packaging material roll-to-roll, and before installation and adhesive application on the space in the laminating machine in which the food packaging material is transferred at a constant speed, the food packaging material It can be configured to remove the oil film on the side surface.

Here, the electric discharge unit may be disposed to maintain a distance of 2 mm to 10 mm between the electrode portions of the positive (+) electrode and the negative (−) electrode in which spark discharge occurs by voltage application and the food packaging material.

Here, the discharge start voltage on the side of the electric discharge unit may be 12000V to 30000V in atmospheric pressure air.

Here, the feeding speed of the food packaging material may be 50 m/min to 250 m/min.

Here, the electrode part on the side of the electric discharge unit may be arranged in a straight line or a curved shape.

Here, the electric discharge unit includes a forward/backward cylinder connected to the electrode unit so as to control forward movement toward the food packaging material or backward away from the food packaging material with respect to the electrode portions of the positive (+) electrode and the negative (-) electrode. can do.

In addition, the method for removing an oil film from a food packaging material according to the present invention for achieving the above object is provided with an electrode part of a positive (+) electrode and a negative (-) electrode and arranged at an interval between the electrodes to form a spark gap. installing the units by spacing them on one or both sides of the packaging material; By applying a voltage to the positive (+) and negative (-) electrodes on the side of the electric discharge unit and controlling the discharge to occur as sparks pop between the electrodes, the flame energy generated during the discharge is used to burn and remove the oil film on the surface of the food packaging material. It is characterized in that it includes;

Here, the food packaging material is continuously transferred via the electric discharge unit in a non-contact state through the transfer device, and the surface-side oil film is removed during transfer by the spark energy caused by the electric discharge unit-side discharge, but the food The conveying speed of the packaging material can be controlled from 50 m/min to 250 m/min.

Here, in the electric discharge unit, the distance between the electrode part of the positive (+) electrode and the negative (-) electrode and the food packaging material in which spark discharge occurs by voltage application is maintained at an interval of 2 mm to 10 mm, and the discharge start voltage can be controlled from 12000V to 30000V in atmospheric pressure air.

According to the present invention, it is possible to achieve the usefulness of being able to easily remove the oil film attached to the surface of a food packaging material such as a foil or a film by dry treatment instead of wet treatment.

According to the present invention, only the oil film on the surface of the foil or film, which is often used as a food packaging material, can be burned and removed without damage to the food packaging material through spark discharge by electric discharge. By removing the oil film, the adhesion between the layers can be improved, thereby reducing the occurrence of defects in food packaging materials, such as preventing the easily peeling between the layers, and achieving the usefulness of increasing productivity.

1 is a conceptual diagram illustrating an apparatus for removing an oil film of a food packaging material according to an embodiment of the present invention.
2 is a conceptual diagram illustrating a configuration including a forward/backward cylinder in the oil film removal device of a food packaging material according to an embodiment of the present invention.
3 is a schematic diagram illustrating a process of removing an oil film from a food packaging material through an oil film removal apparatus and an oil film removal method of a food packaging material according to an embodiment of the present invention.
4 is a process diagram illustrating a method for removing an oil film from a food packaging material according to an embodiment of the present invention.
5 is a photograph showing a state in which the oil film removal device of the food packaging material according to the embodiment of the present invention is installed in the laminating machine.
6 is a photograph showing that spark discharge occurs in the electrode part on the side of the electric discharge unit in the oil film removal device of the food packaging material according to the embodiment of the present invention.

Preferred embodiments of the present invention will be described with reference to the accompanying drawings, and the purpose and configuration of the present invention and its features will be better understood through such detailed description.

As shown in FIGS. 1 to 6 , the oil film removal apparatus of a food packaging material according to an embodiment of the present invention is configured to include an electric discharge unit 100 .

The electric discharge unit 100 has an electrode part 110 of a positive (+) electrode and a negative (-) electrode, and is provided to form a spark gap by arranging the electrode part 110 between the electrodes.

The electric discharge unit 100 includes an electrode part 110 of a positive (+) electrode and a negative (-) electrode in which a spark discharge occurs by applying a voltage for the efficiency of using the flame energy due to the spark discharge, and a food packaging material (1). ), it is preferable to arrange to maintain a distance of 2mm to 10mm for the distance.

Here, when the electrode part 110 and the food packaging material 1 are disposed to be less than 2 mm in distance, there is a risk of damage or damage to the food packaging material itself when the oil film on the packaging material 1 side using flame energy is removed, If it exceeds 10mm, it may not be possible to remove the oil film on the food packaging material (1) side using flame energy.

The electrode part 110 on the side of the electric discharge unit 100 may be arranged in a straight line as shown in FIG. 1 (a) according to the transport direction of the food packaging material 1, or as shown in FIG. 1 (b). They can also be arranged in a curved shape.

The electrode part 110 on the side of the electrospinning unit 100 may be installed in a line-type body structure that covers the width of the food packaging material (1).

Here, the electric discharge unit 100 is capable of forward control toward the packaging material 1 or backward control away from the food packaging material 1 with respect to the electrode part 110 of the positive (+) electrode and the negative (-) electrode. It may include a forward/backward cylinder 120 connected to the electrode unit to do so.

Preferably, the electrode part 110 and the forward/backward cylinder 120 are connected via an insulator.

Through the forward/backward cylinder 120, the distance between the electrode part 110 on the side of the electric discharge unit 100 and the food packaging material 1 can be adjusted, and it can be arranged backward to ensure safety during non-work. have.

The electric discharge unit 100 is an embodiment, and as shown in FIG. 5 , it can be installed and used in a lamination machine, but it is not particularly limited to this embodiment, and more diverse applications are possible.

In other words, the electrospinning unit 100 can be installed and used on a laminating machine that processes the lamination while transferring the food packaging material 1 in a roll-to-roll manner, and the food packaging material 1 is controlled at a constant speed. It can be installed on the inner space of the machine and configured to remove the oil film attached to the surface of the food packaging material (1) before applying the adhesive on the food packaging material (1).

That is, the electric discharge unit 100 having the above-described configuration is used, but a voltage is applied to the electrode part 110 of the positive (+) electrode and the negative (-) electrode so that a spark is generated between the electrodes so that the discharge occurs. By controlling it, the oil film attached to the surface of the food packaging material 1 can be burned and removed with the spark energy generated during discharge.

In this case, the discharge start voltage applied to the electrode part 110 on the side of the electric discharge unit 100 may be applied in the range of 12000V to 30000V in atmospheric pressure air.

Here, the discharge start voltage may be modified or changed depending on the distance between the electrode part 110 and the food packaging material 1 or the distance between the electrodes on the electrode part 110 side, and sometimes even depending on the type of food packaging material. It may be modified or changed.

In addition, in the present invention, in consideration of work efficiency and productivity, it is preferable to enable the oil film removal operation to be performed during the process of transferring the food packaging material 1 on the work process line. The transport speed of the food packaging material 1 is It is preferable to control at 50 m/min to 250 m/min.

In addition, the electric discharge unit 100 can be installed and used to face one side (adhesive side or attached side) of the food packaging material 1, and sometimes when the food packaging material 1 is adhered or attached to both sides of the food packaging material. It can be installed and used to face both sides of (1).

Meanwhile, a method for removing an oil film for removing an oil film on the food packaging material side by using the above-described electric discharge unit 100 will be described below.

1 to 6 , the method for removing an oil film from a food packaging material according to an embodiment of the present invention may be configured to include an electric discharge unit installation step ( S100 ) and an oil film removal step ( S200 ).

In the electric discharge unit installation step (S100), the electric discharge unit 100 having an electrode part of a positive (+) electrode and a negative (-) electrode and disposed at an interval between the electrodes to form a spark gap is installed on one or both sides of the packaging material. It is a step to install by arranging at intervals.

Since the electric discharge unit 100 has been described in detail above, a detailed description thereof will be omitted, and the above-described technical configuration and contents will be applied mutatis mutandis.

In the oil film removal step (S200), a voltage is applied to the electrode part 110 of the positive (+) electrode and the negative (-) electrode on the side of the electric discharge unit 100 to generate sparks between the electrodes and control the discharge to occur. It is a step to burn and remove the oil film on the surface of the packaging material with the spark energy generated during discharge.

Here, the electrode part 110 of the positive (+) electrode and the negative (-) electrode in which spark discharge occurs by applying a voltage to the electric discharge unit 100 is disposed close to the packaging material 1 , but the electrode part The distance between the 110 and the packaging material 1 is maintained at a distance of 2 mm to 10 mm.

Then, as shown in FIG. 6 by controlling and applying the discharge start voltage to 12000V to 30000V in atmospheric pressure air to the electrode part 110 on the side of the electric discharge unit 100, as shown in FIG. 6, the spark caused by the spark discharge in the electrode part 110 generate energy.

In this way, the flame energy generated by the application of the discharge start voltage in the electrode part 110 on the side of the electric discharge unit 100 is transferred toward the surface of one side of the food packaging material 1, and the food packaging material 1 by the energy heat of the flame energy. ), the oil film (1a) attached to the surface of one side is removed through the action of melting and evaporation, and only the oil film (1a) can be removed without damage without affecting the raw material of the food packaging material (1) side.

The oil film removal method of the food packaging material according to the present invention can be installed and used in a laminating machine for shortening the production process of the food packaging material and working efficiency with respect to the electrospinning unit 100, and removing the oil film before adhesive spraying or application It can be installed to do the job.

In addition, the food packaging material 1 is controlled to continuously transport the electric discharge unit 100 in a non-contact state through a transfer device of the laminating machine, and by the spark energy caused by the electric discharge unit 100 side discharge. It can be treated to remove the surface-side oil film 1a during transport.

In this case, the transport speed of the food packaging material 1 installed and transported on the lamination machine may be controlled to 50 m/min to 250 m/min for efficiency according to oil film removal.

In this way, by removing the oil film 1a on the surface of the food packaging material 1 such as foil or film through the above-described device and method utilizing the electric discharge unit 100, the lamination process is performed during lamination through adhesive application thereafter. Since the adhesive function is improved by removing the oil film at the interface (laminated side) of the two food packaging materials, the adhesion between the layers can be improved, so that the phenomenon of easily peeling between the layers can be prevented.

Accordingly, ultimately, it is possible to reduce the occurrence of defects in the food packaging material (composite film, etc.) produced and provide the advantage of increasing productivity.

The embodiments described above are merely illustrative of preferred embodiments of the present invention and are not limited to these embodiments, and various modifications and variations or modifications by those skilled in the art within the technical spirit and claims of the present invention It will be said that the substitution of steps may be made, and this will be said to be within the scope of the technical rights of the present invention.

1: Food packaging material 1a: Oil film
100: electric discharge unit 110: electrode part
120: front and rear truth cylinder

Claims (10)

In the oil film removal device of a food packaging material for removing the oil film attached to the surface of the food packaging material,
an electric discharge unit having an electrode part of a positive (+) electrode and a negative (-) electrode and provided to form a spark gap by arranging an interval between the electrodes; Including, wherein the electrode part on the side of the electric discharge unit is arranged in a straight line or a curved shape,
By applying a voltage to the positive (+) electrode and the negative (-) electrode to control the spark to occur between the electrodes, the spark energy generated during the discharge burns and removes the oil film on the surface of the food packaging material,
An oil film removal device for food packaging, characterized in that the distance between the electrode portions of the positive (+) and negative (-) electrodes, where spark discharge occurs by applying the voltage, and the food packaging material are arranged to maintain an interval of 2 mm to 10 mm. In an oil film removal device of a food packaging material installed on a laminating machine for laminating while transporting the food packaging material roll-to-roll, and for removing the oil film attached to the surface of the food packaging material before applying the adhesive on the food packaging material to be transported,
Before installing and applying adhesive on the space inside the laminating machine in which the food packaging material is transported at a constant speed, an operation is performed to remove the oil film attached to the surface of the packaging material, and the electrodes of the positive (+) and negative (-) electrodes an electric discharge unit provided to form a spark gap by arranging a gap between electrodes; Including, wherein the electrode part on the side of the electric discharge unit is arranged in a straight line or a curved shape,
By applying a voltage to the positive (+) electrode and the negative (-) electrode to control the spark to occur between the electrodes, the spark energy generated during the discharge burns and removes the oil film on the surface of the food packaging material,
The distance between the electrode part of the positive (+) electrode and the negative (-) electrode in which spark discharge occurs by the voltage application and the food packaging material is disposed so as to maintain an interval of 2 mm to 10 mm,
The transport speed of the packaging material is an oil film removal device for food packaging, characterized in that 50m/min to 250m/min. delete 3. The method of claim 1 or 2,
The electric discharge unit side discharge start voltage is,
An oil film removal device for food packaging, characterized in that 12000V to 30000V in atmospheric pressure air. delete delete 3. The method of claim 1 or 2,
The electric discharge unit is
Oil film of food packaging material, characterized in that it includes a forward/backward cylinder connected to the electrode unit so as to control forward movement toward the food packaging material or backward movement away from the food packaging material with respect to the electrode portions of the positive (+) electrode and the negative (-) electrode removal device. In the oil film removal method of a food packaging material for removing the oil film attached to the surface of the food packaging material,
Installing an electric discharge unit having an electrode part of a positive (+) electrode and a negative (-) electrode, spaced between the electrodes to form a spark gap, spaced apart on one or both sides of a food packaging material;
By applying a voltage to the positive (+) and negative (-) electrodes on the side of the electric discharge unit and controlling the discharge to occur as sparks pop between the electrodes, the flame energy generated during the discharge is used to burn and remove the oil film on the surface of the food packaging material. to do; includes,
The food packaging material is continuously transferred via the electric discharge unit in a non-contact state through a transfer device, and the surface-side oil film removal is performed during transfer by the spark energy caused by the electric discharge unit-side discharge, but the food packaging material is transferred The speed is 50 m/min to 250 m/min,
The electric discharge unit maintains a distance of 2 mm to 10 mm from the food packaging material for the electrode parts of the positive (+) electrode and the negative (-) electrode where spark discharge occurs by voltage application, and the discharge start voltage is atmospheric pressure. A method for removing an oil film from a packaging material, characterized in that 12000V to 30000V in air. delete delete

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