WO2024117686A1

WO2024117686A1 - Film thickness and air permeability measurement system

Info

Publication number: WO2024117686A1
Application number: PCT/KR2023/019122
Authority: WO
Inventors: 최병기; 최재구; 김진덕; 류경리
Original assignee: 주식회사 엔비컨스
Priority date: 2022-11-30
Filing date: 2023-11-24
Publication date: 2024-06-06
Also published as: KR102532993B1

Abstract

A film thickness and air permeability measurement system according to an embodiment of the present invention unwinds a film wound on a film roll and measures the thickness and air permeability of the unwound film, and may comprise: a main body portion including an upper surface forming portion providing a plane on an upper surface thereof and a mounting portion erected from the upper surface to form a mounting space; an unwinding portion which is installed in front of the mounting portion and on which a film roll having a film wound thereon is mounted; a winding portion which is installed in front of the mounting portion and apart from the unwinding portion, and on which a winding roll on which the film unwound from the film roll is wound is mounted; a thickness measuring portion which is seated on the upper surface forming portion, is disposed in a space between the unwinding portion and the winding portion, and measures the thickness of the unwound film; an air permeability measuring portion which is seated on the upper surface forming portion, is disposed in the space between the unwinding portion and the winding portion, and measures the air permeability of the unwound film; and a control portion which controls the unwinding portion and the winding portion at regular time intervals so that the film is moved.

Description

Film thickness and air permeability measurement system

The present invention relates to a system for measuring film thickness and air permeability, and more specifically, to a system for unwinding a film wound on a film roll and measuring the thickness and air permeability of the unwound film.

Laminated films (sheets) made by laminating various polymer films or these synthetic resin films with metal foil, cellophane, kraft paper, etc. are used to manufacture separator materials for electrochemical devices such as secondary batteries, fertilizer bags, dustproof bags, etc., and also medicine packaging materials. It is also widely used in packaging materials such as food packaging materials.

Breathable film is a functional film that has a porous structure that allows air to pass through but not liquid. It uses characteristics that improve the storage and functionality of the packaging object, thereby improving the freshness of sanitary products such as diapers and sanitary napkins, agricultural products, and fermented foods. It is widely used as a functional packaging material that maintains

Generally, a breathable film is made by compounding a thermoplastic resin containing an inorganic filler, etc. using a twin-screw extruder, then molding the thermoplastic film using a film molding machine, and going through a stretching process to provide breathability, thereby making the thermoplastic film porous. It is manufactured by a method that imparts structure.

One of the important characteristics that a film manufactured through this process must have is uniformity of thickness.

In this way, in order to manufacture web-shaped products such as films with a uniform thickness within the allowable deviation, a device for accurately measuring the product thickness is required.

The purpose of the present invention is to provide a system that unwinds a film wound on a film roll and automatically measures the thickness and air permeability of the unwinded film at the same time.

The film thickness and air permeability measurement system according to an embodiment of the present invention unwinds a film wound on a film roll and measures the thickness and air permeability of the unwinded film, providing a flat surface on the upper surface. A main body portion having an upper surface forming portion and a mounting portion that stands up from the upper surface to form a mounting space, an unwinding portion installed in front of the mounting portion and on which a film roll on which a film is wound is mounted, installed in front of the mounting portion, A winding unit disposed to be spaced apart from the unwinding unit and equipped with a winding roll on which the film unwinded from the film roll is wound. It is seated on the upper surface forming unit and is disposed in a space spaced between the unwinding unit and the winding unit to unwind the film. A thickness measuring part that measures the thickness of the unwinding film, a breathability measuring part mounted on the upper surface forming part and disposed in the space between the unwinding part and the winding part to measure the air permeability of the unwinding film, and a breathability measuring part at regular time intervals, It includes a control unit that controls the unwinding unit and the winding unit to move the film, wherein the control unit alternately moves and stops the film at regular time intervals, and measures the thickness measurement unit and the air permeability. The unit can measure the thickness and air permeability of the film during the time when the film placed in the space is stopped.

The control unit of the film thickness and air permeability measurement system according to an embodiment of the present invention maintains the first tension of the film when the film is moved, and maintains a second tension smaller than the first tension when the film stops moving. Tension can be maintained.

The thickness measurement unit of the film thickness and air permeability measurement system according to an embodiment of the present invention includes a thickness measurement main body portion seated on the upper surface forming portion, a thickness measurement seating portion formed on the upper surface of the thickness measurement main body portion, and the thickness measurement main body. It is connected to the upper side of the unit, is disposed to face the thickness measurement seating portion, and has a thickness measurement elevating portion that moves up and down so that the separation distance from the thickness measurement seating portion changes, and the film unwound from the film roll is used to measure the thickness. Via the first space between the seating portion and the thickness measurement elevation portion, the air permeability measurement portion includes an air permeability measurement main body portion seated on the upper surface forming portion, an air permeability measurement seating portion formed on the upper surface of the air permeability measurement main body portion, and the air permeability measurement portion. It is connected to the upper side of the measurement main body, is disposed to face the air permeability measurement seat, and has an air permeability measurement elevating part that moves up and down so that the separation distance from the air permeability measurement seat part changes, and the film unwound from the film roll is, While passing through the first space, it may be wound on the winding roll via a second space between the air permeability measurement seating part and the air permeability measurement elevating part.

The unwinding part of the film thickness and air permeability measuring system according to an embodiment of the present invention is installed in the mounting part, provides a space for the film roll to be mounted, and includes an unwinding clamp part rotatably connected to the mounting part, and the unwinding part. An unwinding cylinder part that moves the clamp part in the radial direction to implement fixation or release of the fixation of the film roll to the unwinding clamp part, and is disposed adjacent to the unwinding clamp part, and determines whether the unwinding clamp part rotates with respect to the mounting part. It is provided with a tension maintaining cylinder part that determines, wherein the tension maintaining cylinder part restricts the rotation of the unwinding clamp part with respect to the mounting part at a contact position in contact with the unwinding clamp part, and the tension maintaining cylinder part restricts the rotation of the unwinding clamp part with respect to the mounting part at a position spaced apart from the unwinding clamp part. The unwinding clamp part can be rotated with respect to the mounting part.

The winding unit of the film thickness and air permeability measuring system according to an embodiment of the present invention is installed in the mounting unit, provides a space for the winding roll to be mounted, and includes a winding clamp unit rotatably connected to the mounting unit, the winding unit. It is provided with a winding cylinder part that moves the clamp part in the radial direction to fix or release the fixation of the winding roll to the winding clamp part, and a driving part that is connected to the winding clamp part and provides power to rotate the winding clamp part. When the driving unit is driven in the forward direction, the film of the film roll is unwound and winding of the film onto the winding roll can be implemented. When driven in the reverse direction, the driving unit can enable film unwinding onto the winding roll.

The control unit of the film thickness and air permeability measurement system according to an embodiment of the present invention performs a first operation to cause the driving unit to drive in the forward direction for a first time, and a control unit to stop driving the driving unit after the first operation. After operation 2 and the second operation, a third operation is implemented such that the driving unit is driven in the reverse direction for a second time, and the tension maintaining cylinder unit is located at the spaced position while the first operation is implemented, , While the second operation and the third operation are implemented, the film located at the contact position and disposed in the spaced space maintains the first tension while the first operation and the second operation are implemented. And while the third operation is implemented, the second tension may be maintained.

The film thickness and air permeability measuring system according to an embodiment of the present invention includes a guide roll unit installed in the mounting unit to guide the movement path of the film unwound from the film roll to the winding roll, and the guide roll unit, wherein the guide It further includes a length calculation unit that calculates the length of the unwinded film by measuring the rotation amount of the roll unit, wherein the control unit performs the first operation such that the length of the unwinded film measured by the length calculation unit is equal to the set value. can be implemented.

The guide roll part of the film thickness and air permeability measuring system according to an embodiment of the present invention is disposed on the lower side of the unwinding clamp part, and includes a first guide roll piece and the winder that guide the movement path of the film unwinded from the film roll. A second guide roll piece is disposed on the lower side of the clamp portion and guides the movement path of the film via the thickness measurement portion and the air permeability measurement portion, and the first guide roll piece is positioned at a first height from the upper surface of the upper surface forming portion. A 1-1 guide roll disposed at a second height higher than the first height from the upper surface of the upper surface forming portion, a 1-2 guide roll disposed adjacent to the 1-1 guide roll, and the upper surface. and a 1-3 guide roll disposed at the first height from the upper surface of the forming portion and disposed adjacent to the 1-2 guide roll, and the film unwound from the film roll is disposed at the first height from the upper surface of the forming portion. , sequentially passing through the 1-2 guide roll and the 1-3 guide roll, it moves to the thickness measurement unit, and the length calculation unit can measure the rotation amount of the 1-2 guide roll. .

The control unit of the film thickness and air permeability measurement system according to an embodiment of the present invention, when the thickness and air permeability values of the film of the set first length meet the good product standard n consecutive times (n is a natural number greater than 2), A second length longer than the first length is set as a set value, and if the thickness and air permeability value of the film of the set first length do not meet the good product standard n consecutive times (n is a natural number greater than 2), the second length is set as a set value. A third length shorter than 1 length can be set as the setting value.

The film thickness and air permeability measuring system according to an embodiment of the present invention is mounted on the mounting unit, and includes a display unit that outputs values measured by the thickness measuring unit and the air permeability measuring unit, and a display unit installed on the mounting unit, and the driving unit. It further includes an emergency button unit that forcibly stops the operation of the unwinding clamp unit, and the unwinding clamp unit further includes an unwinding clamp button unit that determines whether or not to move the position of the unwinding cylinder unit in the radial direction. The unwinding clamp unit is configured to A winding clamp button portion that determines whether to move the position in the radial direction may be further provided.

According to the present invention, a film wound on a film roll can be unwound, and the thickness and air permeability of the unwound film can be simultaneously and automatically measured.

1 is a schematic perspective view showing a film thickness and air permeability measurement system according to an embodiment of the present invention.

Figure 2 is a schematic diagram illustrating the thickness measurement unit and the air permeability measurement unit of the film thickness and air permeability measurement system according to an embodiment of the present invention.

Figure 3 is a schematic diagram illustrating the guide roll portion of the film thickness and air permeability measurement system according to an embodiment of the present invention.

Figure 4 is a schematic front view showing a film thickness and air permeability measurement system according to an embodiment of the present invention.

Figure 5 is a schematic side view of the front view of Figure 4 as seen from the left.

Figure 6 is a schematic side view of the front view of Figure 4 as seen from the right side.

Figure 7 is a block diagram for explaining the control unit of the film thickness and air permeability measurement system according to an embodiment of the present invention.

Hereinafter, specific embodiments of the present invention will be described in detail with reference to the drawings. However, the spirit of the present invention is not limited to the presented embodiments, and a person skilled in the art who understands the spirit of the present invention may add, change, or delete other components within the scope of the same spirit, thereby creating other degenerative inventions or the present invention. Other embodiments that are included within the scope of the invention can be easily proposed, but this will also be said to be included within the scope of the invention of the present application.

In addition, components having the same function within the scope of the same idea shown in the drawings of each embodiment will be described using the same reference numerals.

Figure 1 is a schematic perspective view showing a film thickness and air permeability measurement system according to an embodiment of the present invention.

Referring to Figure 1, the film thickness and air permeability measurement system (1, hereinafter referred to as measurement system) according to an embodiment of the present invention unwinds the film (F) wound on the film roll (R1), and the unwinded film (F) It is a system that measures the thickness and air permeability of

The measurement system 1 of the present invention may include a main body 10, an unwinding part 20, a winding part 30, a thickness measuring part 40, an air permeability measuring part 50, and a control part 60. there is.

The main body portion 10 may include an upper surface forming portion 11 that provides a flat upper surface and a mounting portion 13 that stands up from the upper surface to form a mounting space.

The mounting part 13 is formed in the shape of a hexahedron with an empty interior, and various cylinders and driving units 35, which will be described later, can be accommodated in the empty accommodation space.

The unwinding unit 20 may be installed in front of the mounting unit 13 and may be equipped with a film roll R1 on which the film F is wound.

The winding unit 30 is installed in front of the mounting unit 13 and is spaced apart from the unwinding unit 20, and is a winding roll on which the film F unwound from the film roll R1 is wound. R2) can be installed.

The thickness measuring part 40 is seated on the upper surface forming part 11 and is disposed in a space between the unwinding part 20 and the winding part 30 to measure the thickness of the unwinded film F. can do.

The air permeability measuring part 50 is seated on the upper surface forming part 11 and is disposed in the space between the unwinding part 20 and the winding part 30 to measure the air permeability of the unwinded film (F). can do.

Here, breathability means the amount of air that can move through the film (F).

The control unit 60 may control the unwinding unit 20 and the winding unit 30 at regular time intervals to move the film F.

Specifically, the control unit 60 can alternately cause the film F to move and stop at regular time intervals.

Here, the movement of the film (F) means that the film (F) is unwound from the unwinding unit (20) and the unwound film (F) is wound by the winding unit (30), and the movement of the film (F) Stop means a case where unwinding of the film F from the unwinding unit 20 is stopped.

The thickness measuring unit 40 and the air permeability measuring unit 50 can measure the thickness and air permeability of the film F disposed in the spaced space during the time when the film F is stopped.

In addition, the measurement system 1 of the present invention may further include a display unit 91 and an input pad unit 95.

The display unit 91 is mounted on the mounting unit 13 and can output values measured by the thickness measurement unit 40 and the air permeability measurement unit 50.

The input pad unit 95 is a type of touch pad that can input setting values of the control unit 60.

Figure 2 is a schematic diagram for explaining the thickness measurement unit and the air permeability measurement unit of the film thickness and air permeability measurement system according to an embodiment of the present invention, and Figure 3 is a guide to the film thickness and air permeability measurement system according to an embodiment of the present invention. This is a schematic diagram to explain the roll part.

In addition, Figure 4 is a schematic front view showing a film thickness and air permeability measurement system according to an embodiment of the present invention, Figure 5 is a schematic side view of the front view of Figure 4 viewed from the left, and Figure 6 is a right view of the front view of Figure 4. This is a schematic side view seen from .

And, Figure 7 is a block diagram for explaining the control unit of the film thickness and air permeability measurement system according to an embodiment of the present invention.

Referring to Figures 2 to 7, the control unit 60 of the present invention can maintain the first tension of the film (F) when the film (F) is moved.

Additionally, the control unit 60 may maintain a second tension smaller than the first tension when the film F stops moving.

Specifically, the tension of the film F may vary depending on the degree of rotation of the unwinding unit 20 and the winding unit 30.

For example, the tension of the film F can be changed by varying the unwinding speed of the unwinding unit 20 and the winding speed of the winding unit 30.

A detailed description of the first tension and second tension of the film F will be provided in detail in the description of the operation of the control unit 60 below.

The thickness measurement unit 40 may include a thickness measurement main body 41, a thickness measurement seating unit 43, and a thickness measurement elevation unit 45.

The thickness measuring body portion 41 may be seated on the upper surface forming portion 11. Specifically, the thickness measurement main body 41 is a structure formed in a “ㄷ” shape.

The thickness measurement seating portion 43 may be formed on the upper surface of the thickness measuring main body 41, and specifically, may be formed on the upper surface of the lower end of the “ㄷ” shape.

The thickness measurement lifting part 45 is connected to the upper side of the thickness measuring main body 41 and is arranged to face the thickness measuring seating part 43, and the separation distance from the thickness measuring seating part 43 is You can go up and down to change.

The film (F) unwound from the film roll (R1) may pass through the first space between the thickness measurement seating portion 43 and the thickness measurement elevation portion 45.

The thickness measurement unit 40 measures the thickness of the film F disposed in the first space through the change in separation distance between the thickness measurement seating unit 43 and the thickness measurement elevation unit 45. .

The air permeability measuring unit 50 may include an air permeability measurement main body part 51, an air permeability measurement seating part 53, and an air permeability measurement elevation part 55.

The air permeability measurement main body 51 may be seated on the upper surface forming part 11. Specifically, the air permeability measurement main body 51 is a structure formed in a “ㄷ” shape.

The air permeability measurement seating portion 53 may be formed on the upper surface of the air permeability measurement main body 51, and specifically may be formed on the upper surface of the lower end of the “ㄷ” shape.

The air permeability measurement lifting part 55 is connected to the upper side of the air permeability measurement main body 51 and is arranged to face the air permeability measurement seating part 53, and the separation distance from the air permeability measurement seating part 53 is You can go up and down to change.

The film (F) unwound from the film roll (R1) passes through the first space and passes through the second space between the air permeability measurement seating part 53 and the air permeability measurement elevating part 55. It can be wound on the winding roll (R2).

The air permeability measuring unit 50 measures the air permeability of the film F disposed in the second space by measuring the amount of air flow between the air permeability measurement seating part 53 and the air permeability measurement elevating part 55.

The unwinding part 20 may include an unwinding clamp part 21, an unwinding cylinder part 23, and a tension maintaining cylinder part.

The unwinding clamp part 21 is installed on the mounting part 13, provides a space on which the film roll R1 is mounted, and can be rotatably connected to the mounting part 13.

The unwinding clamp part 21 may be provided with an unwinding clamp button part 231 that determines whether or not to move the position of the unwinding cylinder part 23 in the radial direction.

The unwinding cylinder part 23 can move the unwinding clamp part 21 in the radial direction to fix or release the film roll R1 from the unwinding clamp part 21.

The tension maintaining cylinder unit (not shown) is disposed adjacent to the unwinding clamp part 21 and can determine whether the unwinding clamp part 21 rotates with respect to the mounting part 13.

The tension maintaining cylinder portion restricts the rotation of the unwinding clamp portion 21 with respect to the mounting portion 13 at a contact position in contact with the unwinding clamp portion 21, and is spaced apart from the unwinding clamp portion 21. The unwinding clamp part 21 can be rotated with respect to the mounting part 13 in the spaced position.

The winding unit 30 may include a winding clamp unit 31, a winding cylinder unit 33, and a driving unit 35.

The winding clamp part 31 is installed on the mounting part 13, provides a space for the winding roll R2 to be mounted, and can be rotatably connected to the mounting part 13.

The winding clamp portion 31 may be provided with a winding clamp button portion 311 that determines whether or not to move the position of the winding cylinder portion 33 in the radial direction.

The take-up cylinder part 33 can move the take-up clamp part 31 in the radial direction to fix or release the take-up roll R2 to the take-up clamp part 31.

The driving unit 35 may be connected to the winding clamp unit 31 and provide power to rotate the winding clamp unit 31.

When the driving unit 35 is driven in the forward direction (S1), the film (F) from the film roll (R1) is unwound and the film (F) can be wound onto the winding roll (R2).

Additionally, when the driving unit 35 is driven in the reverse direction (S2), unwinding of the film (F) onto the winding roll (R2) can be implemented. In FIG. 4, the reverse direction (S2) is shown as the rotation direction of the film roll (R1), but it is natural that the driving unit 35 can also be rotated in the reverse direction (S2).

Meanwhile, the control unit 60 may allow the first to third operations to be implemented repeatedly.

The first operation is an operation that causes the driving unit 35 to be driven in the forward direction (S1) for a first time.

While the first operation is being implemented, the winding clamp unit 31 is rotated in the forward direction (S1), and thus the film (F) is wound on the winding roll (R2). In addition, as the film (F) is wound, the unwinding clamp unit 21 is rotated in the reverse direction (S2), and thus the film (F) wound on the film roll (R1) is unwound.

The second operation is an operation to stop driving of the driving unit 35 after the first operation. The second operation may be determined according to certain time information input to the control unit 60, and may vary depending on the rotation speed of the driving unit 35.

The third operation is an operation that causes the driving unit 35 to be driven in the reverse direction (S2) for a second time after the second operation.

By the third operation, a portion of the film F of the winding roll R2 may be unwound, thereby lowering the tension of the film F.

This is to minimize damage to the film F or measurement inaccuracy that may occur if the tension is too strong when measuring the film F by the thickness measurement unit 40 or the air permeability measurement unit 50. am.

Specifically, the film (F) placed in the first space is lowered by the thickness measurement lifting unit 45, and the film (F) placed in the second space is moved to the air permeability measuring lifting unit 55. If the tension of the film (F) is too strong, the film (F) may be torn when lowered by the thickness measurement elevation part 45 and the air permeability measurement elevation part 55. If it is not supported, the lowering of the thickness measurement elevation unit and the air permeability measurement elevation section 55 may be hindered, making it difficult to accurately measure thickness and air permeability.

The tension maintaining cylinder portion is located at the spaced position while the first operation is being implemented.

Additionally, the tension maintaining cylinder portion is located at the contact position while the second operation and the third operation are implemented.

The film F disposed in the space is maintained at the first tension while the first operation and the second operation are implemented, and the second tension is maintained while the third operation is implemented. .

Meanwhile, the measurement system 1 of the present invention may further include a guide roll unit 70 and a length calculation unit 80.

The guide roll unit 70 is installed on the mounting unit 13 and can guide the movement path of the film F unwound from the film roll R1 to the winding roll R2.

The length calculation unit 80 is installed on the guide roll unit 70, and can calculate the length of the unwinded film F by measuring the rotation amount of the guide roll unit 70.

The control unit 60 may implement the first operation so that the length of the unwound film F, measured by the length calculation unit 80, is equal to a set value.

The guide roll unit 70 may include a first guide roll piece 71 and a second guide roll piece 72.

The first guide roll piece 71 is disposed on the lower side of the unwinding clamp part 21 and can guide the movement path of the film F unwinded from the film roll R1.

The second guide roll piece 72 is disposed on the lower side of the winding clamp part 31 and follows the movement path of the film F via the thickness measuring part 40 and the air permeability measuring part 50. I can guide you.

The first guide roll piece 71 may include a 1-1 guide roll 711, a 1-2 guide roll 712, and a 1-3 guide roll 713.

The 1-1 guide roll 711 may be disposed at a first height from the upper surface of the upper surface forming portion 11.

The 1-2 guide roll 712 is disposed at a second height higher than the first height from the upper surface of the upper surface forming portion 11, and is disposed adjacent to the 1-1 guide roll 711. You can.

The 1-3 guide roll 713 may be disposed at the first height from the upper surface of the upper surface forming portion 11 and adjacent to the 1-2 guide roll 712.

The film (F) unwound from the film roll (R1) is sequentially applied to the 1-1 guide roll 711, the 1-2 guide roll 712, and the 1-3 guide roll 713. It can be moved to the thickness measuring unit 40 while passing through.

The length calculation unit 80 can measure the rotation amount of the 1-2 guide roll 712.

When the thickness and air permeability value of the film (F) of the set first length meet the standard for good products n consecutive times (n is a natural number greater than 2), the control unit 60 controls the second length longer than the first length. can be set as the setting value.

Here, if the thickness and air permeability values of the film (F) meet the standards for good products more than a certain number of times, the length of the measurement section is increased for quick inspection of the film roll (R1) (whether the thickness and air permeability are good products).

In addition, if the thickness and air permeability value of the film F of the set first length do not meet the standard for good products n times in succession (n is a natural number greater than 2), the control unit 60 controls the film F to be shorter than the first length. The third length can be set as a set value.

Here, if the thickness and air permeability values of the film (F) do not meet the standards for good products more than a certain number of times, the length of the measurement section is shortened in order to precisely inspect the film roll (R1) (whether the thickness and air permeability are good products).

And, the control unit 60 controls the driving unit 35 when the value measured by the thickness measurement unit 40 or the air permeability measurement unit 50 is greater than a preset maximum value or less than a minimum value. It can be stopped.

Here, if it is greater than the preset maximum value, it means that the film (F) overlaps or an unexpected foreign substance is attached to the film (F), and if it is less than the preset minimum value, the film (F) falls off or the film (F) is damaged. This is a case where a part is torn.

In addition, the measurement system 1 of the present invention may further include an alarm unit 97 that is mounted on the mounting unit 13 and generates light or sound.

The control unit 60 operates the alarm unit 97 when the value measured by the thickness measurement unit 40 or the air permeability measurement unit 50 is greater than a preset maximum value or less than a minimum value. , allows the user to check the condition of the film (F).

Meanwhile, the measurement system 1 of the present invention may further include an emergency button unit 93.

The emergency button unit 93 is installed on the mounting unit 13 and can forcibly stop the driving unit 35. When an unexpected situation occurs, the user can prevent a safety accident by pushing the emergency button 93 to stop the driving unit 35.

In the above, the configuration and features of the present invention have been described based on the embodiments according to the present invention, but the present invention is not limited thereto, and various changes or modifications may be made within the spirit and scope of the present invention. It is obvious to those skilled in the art, and therefore, it is stated that such changes or modifications fall within the scope of the appended patent claims.

Claims

In the film thickness and air permeability measurement system for unwinding a film wound on a film roll and measuring the thickness and air permeability of the unwound film,

A main body portion including an upper surface forming portion that provides a flat surface and a mounting portion that stands up from the upper surface to form a mounting space;

An unwinding unit installed in front of the mounting unit and onto which a film roll on which a film is wound is mounted;

A winding unit installed in front of the mounting unit, spaced apart from the unwinding unit, and equipped with a winding roll on which the film unwound from the film roll is wound;

A thickness measuring unit mounted on the upper surface forming unit and disposed in a space between the unwinding unit and the winding unit to measure the thickness of the unwinded film;

An air permeability measuring unit mounted on the upper surface forming part and disposed in a space between the unwinding part and the winding part to measure the air permeability of the unwinded film; and

It includes a control unit that controls the unwinding unit and the winding unit to move the film at regular time intervals,

The control unit,

At regular time intervals, the movement and stopping of the film are implemented alternately,

The thickness measurement unit and the air permeability measurement unit,

A film thickness and air permeability measurement system, characterized in that it measures the thickness and air permeability of the film during the time when the film placed in the space is stopped.
According to paragraph 1,

The control unit,

When the film is moved, ensure that the film maintains a first tension,

A system for measuring film thickness and air permeability, characterized in that when the movement of the film stops, a second tension smaller than the first tension is maintained.
According to paragraph 2,

The thickness measuring part,

A thickness measurement main body seated on the upper surface forming part,

A thickness measurement seat formed on the upper surface of the thickness measurement main body and

It is connected to the upper side of the thickness measurement main body, is disposed to face the thickness measurement seating portion, and includes a thickness measurement elevating portion that is raised and lowered so that the separation distance from the thickness measurement seating portion is changed,

The film unwound from the film roll is,

Via the first space between the thickness measurement seating portion and the thickness measurement elevating portion,

The air permeability measuring unit,

An air permeability measurement main body seated on the upper surface forming part,

An air permeability measurement seat formed on the upper surface of the air permeability measurement main body and

It is connected to the upper side of the air permeability measurement main body, is disposed to face the air permeability measurement seat, and has an air permeability measurement elevating part that moves up and down so that the separation distance from the air permeability measurement seat part changes,

The film unwound from the film roll is,

A film thickness and air permeability measurement system, characterized in that it is wound on the winding roll through a second space between the air permeability measurement seating portion and the air permeability measurement elevating portion while passing through the first space.
According to paragraph 3,

The unwinding part,

An unwinding clamp part installed in the mounting part, providing a space for the film roll to be mounted, and rotatably connected to the mounting part,

An unwinding cylinder part that moves the unwinding clamp part in the radial direction to fix or release the film roll to the unwinding clamp part, and

It is disposed adjacent to the unwinding clamp part and has a tension maintaining cylinder part that determines whether the unwinding clamp part rotates with respect to the mounting part,

The tension maintaining cylinder part,

The rotation of the unwinding clamp part with respect to the mounting part is restricted at a contact position in contact with the unwinding clamp part, and the unwinding clamp part is allowed to rotate with respect to the mounting part at a spaced position away from the unwinding clamp part. Film thickness and air permeability measurement system.
According to paragraph 4,

The winding part,

A winding clamp part installed in the mounting part, providing a space for the winding roll to be mounted, and rotatably connected to the mounting part,

A take-up cylinder part that moves the take-up clamp part in the radial direction to fix or release the take-up roll to the take-up clamp part;

A driving unit connected to the winding clamp unit and providing power to rotate the winding clamp unit,

The driving unit,

When driven in the forward direction, the film of the film roll is unwound and winding of the film onto the winding roll is implemented,

A film thickness and air permeability measurement system characterized in that when driven in the reverse direction, unwinding of the film onto the winding roll is realized.
According to clause 5,

The control unit,

A first operation of causing the driving unit to be driven in the forward direction for a first time,

A second operation to stop driving of the driving unit after the first operation, and

After the second operation, a third operation is implemented such that the driving unit is driven in the reverse direction for a second time,

The tension maintaining cylinder part,

While the first operation is being implemented, positioned at the spaced position,

While the second operation and the third operation are being implemented, located at the contact position,

The film placed in the space is

While the first operation and the second operation are implemented, the first tension is maintained,

A film thickness and air permeability measurement system, wherein the second tension is maintained while the third operation is implemented.
According to clause 6,

a guide roll unit installed on the mounting unit to guide the movement path of the film unwound from the film roll to the winding roll; and

It further includes a length calculation unit installed in the guide roll unit and measuring the rotation amount of the guide roll unit to calculate the length of the unwinded film,

The control unit,

A film thickness and air permeability measurement system, characterized in that the first operation is implemented so that the length of the unwound film measured by the length calculation unit is equal to the set value.
In clause 7,

The guide roll part,

A first guide roll piece disposed on the lower side of the unwinding clamp part and guiding the movement path of the film unwinded from the film roll, and

A second guide roll piece is disposed on the lower side of the winding clamp unit and guides the movement path of the film via the thickness measurement unit and the air permeability measurement unit,

The first guide roll piece is,

A 1-1 guide roll disposed at a first height from the upper surface of the upper surface forming part,

A 1-2 guide roll disposed at a second height higher than the first height from the upper surface of the upper surface forming portion and disposed adjacent to the 1-1 guide roll, and

A 1-3 guide roll is disposed at the first height from the upper surface of the upper surface forming portion and is disposed adjacent to the 1-2 guide roll,

The film unwound from the film roll is,

It is moved to the thickness measuring unit while sequentially passing through the 1-1 guide roll, the 1-2 guide roll, and the 1-3 guide roll,

The length calculation unit,

A film thickness and air permeability measurement system characterized by measuring the rotation amount of the 1-2 guide roll.
In clause 7,

The control unit,

If the thickness and air permeability value of the film of the set first length meet the standard for good products n consecutive times (n is a natural number greater than 2), the second length longer than the first length is set as the set value,

If the thickness and air permeability value of the film of the set first length do not meet the standard for good products n consecutive times (n is a natural number greater than 2), a third length shorter than the first length is set as the set value. Film thickness and air permeability measurement system.
According to clause 5,

a display unit mounted on the mounting unit and outputting values measured by the thickness measurement unit and the air permeability measurement unit; and

It further includes an emergency button unit installed on the mounting unit and forcibly stopping the driving unit,

The unwinding clamp part,

It is provided with an unwinding clamp button portion that determines whether or not to move the position of the unwinding cylinder portion in the radial direction,

The winding clamp part,

A film thickness and air permeability measurement system characterized by a winding clamp button unit that determines whether or not to move the position of the winding cylinder unit in the radial direction.