KR20060021398A - Defect Marking Method, Defect Marking Device and Sheet Shape - Google Patents

Abstract

On the basis of the signals from the line sensor 5 and the binarizing means 10a, the defect detection means 10b detects the defects 2a and 2b of the sheet-like object 1 that travels. The solenoid 6 is operated on the basis of the signal from the defect detection means 10b to bring the shaft attachment grindstone 7 into contact with the defects 2a and 2b. Thereby, the marks 3a and 3b can be formed in the vicinity of the defects 2a and 2b of the sheet-like article 1.

Description

Flaw Marking Method, Flaw Marking Device and Sheet Shaped Objects {METHOD AND APPARATUS FOR MARKING DEFICIENT, AND SHEET-SHAPED OBJECT}

1 is a plan view of a sheet-like article on which a mark is formed;

2 is a view showing a defect marking method according to the present invention.

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a defect marking method and a defect marking apparatus in which defects of a sheet-like article having a film laminated on a sheet-like base material are specified by marking. Moreover, this invention relates to the sheet-like object in which the mark was formed in this way.

When manufacturing or handling sheet-like objects such as plastic film, paper, metal foil or metal foil, or a composite thereof, the defects of these sheet-like objects are detected and the positions and sizes of the defects are identified, It is well done to remove the defective part in the post process or to find a means for eliminating the defect.

In addition, the sheet-like material described above is coated on the base material (sheet-shaped base material) and its surface, printing using ink, plating, vapor deposition, or sputtering, which is a method of forming a metal thin film, or other methods (these are all It is also formed from the film formed by carrying out a wide coating) and made into the laminated body which provided various characteristics and states. Since the coating formed by such a coating is generally required to have a uniform film thickness, and furthermore, a physical or chemical property and state brought by the coating, the position of the defect of the coating, in addition to the position and size of the defect of the substrate, It is well known to grasp the size and the like, and to find a means for removing the defective portion or eliminating the defect in the later step.

Moreover, below, a sheet-like thing may be called a sheet.

In any of the above cases, the detection of a defect is a defect that may be impeded by applying appropriate illumination to the sheet, reading the state of the surface of the sheet, etc. by a line sensor or the like, and processing the obtained information at a predetermined threshold. Is extracted and the place where the defect is generated is specified.

The information on the detected defect is stored by appropriate storage means, and then, based on the information, a procedure for eliminating the defect is performed by cutting out or repairing the defective portion.

Alternatively, when a defect is detected, a mark is attached with a water-based pen or an oil pen, a mark is applied by an inkjet, or a label is placed on or near the detected defect. Subsequently, the sheet is treated by recognizing the defective part and cutting out or repairing the defective part by the presence of the pasted mark or pasted label.

Generally, marking and labeling are often performed.

Industrially, when the sheet is handled, a roll-shaped sheet is used to wind the sheet, and to apply the sheet. The sheet is usually run at high speed in order to increase production efficiency.

However, in the method of marking or labeling, the sheet is in contact with various rolls or parts when the sheet passes through processing equipment such as an applicator because the mark is pasted with ink or the label is pasted. There is this. In this case, the pasted mark or label may be lost due to peeling off of the ink of the undried mark or peeling off of the label. In such a case, the defect may be missed and the treatment of the defect may not be performed. When the mark is formed by ink, there is a fear that the ink may adhere to the sheet superimposed or wound on it.

In addition, the sheet may be subjected to a treatment using a liquid, such as cleaning the surface or developing a photograph, in a series of processing steps. In this case, the undried ink or the label is peeled off, and in particular, the undried ink is dissolved and removed, so that the mark may be lost. In this case, the defect may be missed and the treatment of the defect may not be performed.

Moreover, the sheet-shaped article marked with marks minimizes the damage to the function and properties of the sheet-shaped article itself by the mark, and the mark itself is not lost by the handling of the sheet-shaped article, and it is possible to prevent overlooking the defect. Must be present

This invention is made | formed in view of the point mentioned above, and when the process of a sheet | seat is carried out using an application | coating apparatus or another processing apparatus, the mark is lost, and the objective is to solve that it does not miss a defect and becomes excessive. .

In addition, the present invention has a purpose to solve the problem that the mark is lost and the defect is not excessive when the processing using the liquid is performed.

Moreover, an object of this invention is to provide the sheet | seat which a mark does not lose in the case of such a process and the process using a liquid.

In the present invention for achieving the above object, a defect in which a sheet-like object that runs continuously is detected, and a marking is made of a material or blade whose tip is harder than the sheet-like object on the side opposite to the location having the defect. A tool is used to attach the mark.

In the defect marking method according to the present invention, a film is formed on a sheet-like base material which is continuously running, and a step of detecting a defect in the sheet-like material, and a defect in the sheet-like product in the defect portion or vicinity of the sheet-like material are formed. On the surface opposite to the surface, a marking tool is used to attach a mark made of blade marks, abrasion traces or cutting traces, and the mark is attached to the surface on the side opposite to the surface where the film of sheet-like material is present. And a step of treating the sheet-like article with an acidic solution or an alkaline solution.

The present invention further comprises a step of applying a treatment to one surface of the sheet-like article, and the mark is affixed to a surface on the side opposite to the surface on which the sheet-like article is processed.

The present invention is a defect marking method wherein a mark is applied after a sheet-like object is processed.

The present invention is a defect marking method wherein a mark is applied before the sheet-like object is processed.

The present invention is a defect marking method characterized in that the treatment carried out on the sheet-like article is corona discharge treatment, oxidation treatment, plasma treatment or flame treatment.

The present invention is a defect marking method, wherein the film is formed by coating or printing.

The present invention is a defect marking method, wherein the coating is formed by plating, vapor deposition, or sputtering.

The present invention is a defect marking method characterized in that the treatment using a liquid is a treatment for the purpose of cleaning treatment, developing treatment, corrosion treatment or adhesion improvement.

The present invention is a defect marking method further comprising the step of forming a protective layer on the sheet-like article.

In the sheet-like article which has a defect in the surface, this invention is provided in the vicinity of a defect, and has a mark which consists of a blade mark, abrasion mark, or a cutting trace, and the mark is provided in the surface on the opposite side to a defect. It is a sheet-like thing.

In the present invention, the sheet-like article is composed of a sheet-like base material and a film formed on the sheet-like base material, and the mark is provided on the surface of the sheet-shaped base material.

According to the present invention, there is provided a defect detecting means for optically detecting a defect of a sheet-like article that runs continuously, and a surface opposite to a surface on which a defect of the sheet-like article is formed in the vicinity of the defect of the sheet-like article based on a signal from the defect detecting means. And a marking tool for attaching a mark made of blade marks, wear marks or cutting marks.

(Example)

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

1 is a view showing an example of a sheet on which a defect point according to the present invention is displayed, wherein the sheet-like article 1 (hereinafter, the sheet) has a width direction in the drawing, and a left and right direction in the drawing is in the longitudinal direction, It is also a Ginza shape that runs continuously from left to right.

The sheet 1 illustrated in FIG. 1 is provided with defects 2a and 2b in each of two locations on the upper left side and the lower side on the right side in the drawing. The marks 3a and 3b corresponding to each of the defects 2a and 2b are provided in a linear shape parallel to the longitudinal direction of the sheet 1. That is, the former mark 3a transverses over the defect 2a, and the latter mark 3b is affixed in the vicinity of the defect 2b, respectively.

There are several kinds of defects 2 of the sheet 1, and the defects of the sheet-shaped base material 1a of the sheet 1 include impurities in the sheet-shaped base material, pinholes, and thick thicknesses ( I), foreign matter adhered during the manufacture of the sheet-shaped base material, transparent stains, unevenness of the surface gloss, and the like, and when the sheet-shaped material is colored, uneven coloration may also become a defect.

In addition, when the sheet | seat 1 is a laminated body which consists of the sheet-like base material 1a and the film 1b provided by application | coating or printing on the sheet-like base material 1a, the sheet 1 is a sheet-like base material, for example. In the case of the film 1b formed on the sheet-like base material 1a by coating, the defects of the film 1b formed by coating are further included as the defects 2a and 2b of the sheet 1. Is added. For example, as the defects 2a and 2b, the pinhole of the film 1b, the thick film of the thickness, the undissolved matter, the foreign matter adhered to the film, etc. are considered.

Moreover, you may form the film 1b by plating, vapor deposition, or sputtering.

Generally speaking, these kinds of defects 2a and 2b are many in kind, but they are practically impaired even if they are visually seen as defects, and the types of defects that may be problematic are determined in advance based on normal use.

In addition, about the grades of the defects 2a and 2b, there are some that can be ignored practically. Normally, from a practical point of view or an economic point of view, an approximate limit enumerated as a defect may be determined, for example, to determine whether a foreign material of a certain number or more is regarded as a defect, and a defect below the limit may not be regarded as a defect.

The steps from the detection of the defect of the sheet 1 to the marking of the sheet 1 are typically performed as in the examples shown in the following FIGS. 2A and 2B.

In FIG. 2A, the sheet 1 runs continuously from left to right in the drawing, and the sheet 1 is illuminated by the illumination 4 provided below the sheet 1, The line sensor 5 takes light from the illuminated spot and turns it into a signal. As shown in Fig. 2 (a), since the light passing through the sheet 1 is illuminated at a portion having defects 2a and 2b on the lower surface side of the sheet 1, the output of the line sensor 5 is output. This changes. The change of the output is binarized by, for example, the binarization means 10a, and based on the signal from the binarization means 10a, the defects 2a and 2b exist in the defect detection means 10b, and The position is detected.

Information on the presence and position of these defects 2a and 2b detected by the defect detection means 10b is sent to the marking tool driving means 10c and based on the signal from the marking tool driving means 10c, the solenoid ( The plunger (= movable core) of 6) is activated. In this case, the shaft attachment grinding wheel 7, which is a marking tool, fixed to the tip of the plunger of the solenoid 6 momentarily contacts the sheet 1, and returns to its original position.

The back-up roller 8 is provided on the opposite side between the seat 1, where the seated contact point 7 is in contact with the seat 1, so that the seated contact point 7 is securely in contact with the seat 1. .

The tip of the shaft-attached grindstone 7 is made of a grindstone, carborando, a metal, or the like, and is made of a material having a hardness sufficiently higher than that of the sheet 1. In addition, the tip of the axial wheel 7 has a diameter of several millimeters to several tens of millimeters, the sharpest end of which is sharp or curved, and has a shape capable of point contact with a plane. By contacting the seat 1 with which such an axial sticking wheel 7 travels, as shown in FIG. 1, on the upper surface of the seat 1, a linear wear trace or parallel to the running direction of the seat 1 or Marks 3a and 3b made of cutting marks are formed. In the sense of preventing the sheet 1 from protruding to the rear surface side by forming the marks 3a and 3b, it is preferable that the uppermost end of the axial sticking wheel 7 forms a curved surface while forming a curved surface.

As the marking tool, instead of the shaft-attached grindstone 7, the tip may be made of a blade made of a material such as metal or ceramic. In the case of using the blade, as the marks 3a and 3b, cutting marks or blade marks may be used. Is formed.

In the case where the marks 3a and 3b are formed, when residual debris due to abrasion, cutting or the like occurs, it is preferable to remove the generated debris by a suitable method such as suction.

The marks 3a and 3b have a linear shape parallel to the traveling method of the seat 1 as shown in Fig. 1 because the operating speed of the solenoid 6 is sufficiently slow compared to the traveling speed of the seat. to be. Traveling speed of the seat as an example; 20 m / min., Operating time of solenoid; In the case of 90 msec, the length of the damage caused by the axial sticking wheel 7 is about 3 cm, but by lowering the traveling speed of the seat 1 and speeding up the operation of the solenoid 6, the line 3 of the marks 3a and 3b is selected. The length can be shortened.

Of course, the marks 3a and 3b are not limited to linear ones parallel to the running direction of the sheet 1 as long as they can be formed at a speed.

Although the marks 3a and 3b are shown by one line in FIG. 1, they may be formed from two or more lines, or may be a dashed line instead of a continuous line. It may be a combination.

In the case where the marks 3a and 3b are formed by two or more lines, the positions of the defects 2a and 2b can be further specified by placing the defects 2a and 2b between the plurality of lines. Any one line may be formed so as to transverse the defects 2a and 2b.

In the case of forming the marks 3a and 3b, the degree of damage of the marks 3a and 3b can be changed by adjusting the force that the marking tool such as the axial sticking wheel 7 contacts the sheet 1.

From the viewpoint of the ease of viewing the marks 3a and 3b, the more severe degree of damage is preferable. On the other hand, if the damage is too severe, the area around the damage swells or swells on the opposite side of the sheet 1, where the marks 3a and 3b are left and right when the sheet 1 after processing is wound. In this case, the sheet 1 becomes thick, whereby the roll shape of the sheet 1 at the time of being wound may be distorted.

By adjusting the holding force of the solenoid 6 by changing the exciting current of the coil, the suction force for sucking the movable iron core may be adjusted. As an example, in the case of the marking on the sheet 1 made of a triacetyl cellulose film having a thickness of 80 µm, when the holding force is set to 0.226 Nm using a solenoid having a holding force of 0.056 Nm to 1.15 Nm, appropriate damage is obtained. Obtained.

The points on which the marks 3a and 3b are to be formed are located directly above the defect 2a as shown in the upper left side in FIG. 1, or from the position having the defect 2b as shown in the lower right side in FIG. 1. It may be in the vicinity of the space (in this case, the position biased toward the end of the sheet 1 than the defects 2a and 2b).

However, in the present invention, since the marks 3a and 3b are physical and cannot be removed, the portions where the marks 3a and 3b are formed cannot be used. Therefore, although the sheet 1 of what dimension is cut out from the sheet | seat 1 which runs continuously, it is good to form the mark 3a, 3b in the vicinity of defect 2a, 2b as much as possible. Moreover, unless specifically determined in advance, the vicinity of the defects 2a and 2b forming the marks 3a and 3b includes immediately above and around the defects 2a and 2b.

The position at which the marks 3a and 3b are formed is determined by the signal from the marking tool driving means 10c. In order to accurately position the axial sticking wheel 7 and to symmetry the grindstone 7 with the defects 2a and 2b, the solenoid 6 with the axial sticking wheel 7 is placed in the width direction of the sheet 1. It may be made to move and may move every time.

Alternatively, a plurality of solenoids 6 having shaft attachment stones 7 are densely arranged side by side at equal intervals in the width direction of the sheet 1, and the solenoids 6 closest to the defects 2a and 2b are provided. It may work.

Which side of the sheet 1 forms the marks 3a and 3b is determined by the convenience of handling the subsequent sheet 1, and is formed on the upper surface of the sheet 1 as shown in FIG. It may form on the lower surface instead of.

In the case of the laminate in which the sheet 1 has the sheet-like base material 1a and the coating 1b formed by coating, in principle, the marks 1a and 3b are laminated with the coating 1b in the sheet 1. Even if it forms in the base material 1a side which is not formed, or it forms in the film 1b, it may be anywhere. Generally, when the film 1b is soft, the marks 3a and 3b formed on the film 1b tend to return to the original. When formed on the sheet-like base material 1a (for example, plastic film) that is harder than the film 1b, since the marks 3a and 3b are returned to their originals, the film 1b is laminated in that severe damage may occur. It is preferable to form on the base material 1a side which is not.

In the case where the marks 3a and 3b are formed on the sheet 1 and the protective layer 1c (FIG. 2B) or another layer is laminated on the marks 3a and 3b in a subsequent step, generally, Marks 3a and 3b become difficult to see. This is because the marks 3a and 3b are filled when the coating is applied on the marks 3a and 3b to form these layers.

However, when the extremely thin adhesive is laminated on the sheet 1 made of a relatively hard film with the adhesive layer side in contact with the mark 3, the mark 3 is less likely to be filled, so that the adhesive on the mark 3 Even if laminated | stacked, the visibility of the mark 3 does not fall. However, when the sheet 1 made of a film is soft and the adhesive layer is thick, the mark 3 is strongly tended to be filled by the adhesive, so that the visibility of the mark 3 is lowered.

In addition, when the sheet 1 is subjected to a treatment using a liquid such as cleaning of the surface or developing of a photograph in a series of processing steps, the treatment using the liquid is the surface of the film 1b on one side of the sheet 1. If only to be carried out, it is preferable to apply the mark 3 to the substrate 1a side where the processing is not performed. In addition, the sheet 1 is subjected to a treatment using a liquid such as cleaning or photographic development on the surface of the film 1b, and a protective layer on the surface of the substrate 1a side that is not subjected to the treatment before the treatment. When (1c) is laminated, the base material 1a on which the protective layers 1c of the sheet 1 are laminated while detecting defects 2a and 2b before formation of the protective layer 1c, that is, before processing. It is good to apply marks 3a and 3b to the side.

Furthermore, after the process using the liquid, the defects 2a and 2b may be detected and the marks 3a and 3b may be provided.

As a treatment performed using a liquid, in addition to cleaning the surface of the film 1b and developing a photograph, treatment with an acid solution (oxidation treatment or degreasing treatment) or immersion treatment with an alkaline solution (neutralization treatment or saponification treatment) Etc., there is a corrosion treatment using an acidic or alkaline solution. Moreover, the process performed using a liquid may improve the adhesiveness of a process surface.

Since the liquids used for these treatments are largely divided, and mainly consisted of an aqueous solution and mainly contain an organic solvent, the mark implemented using a ballpoint pen, a marker pen, etc., elutes with water or an organic solvent, and the mark This often makes it impossible to find a defect. In contrast, according to the present invention, since the marks 3a and 3b are made of blade marks, wear marks or cutting marks, the marks 3a and 3b are not removed.

Further, one surface of the sheet-like article 1 (sheet) may be subjected to treatment such as corona discharge treatment, plasma treatment, or flame treatment, preferably while continuously running. These treatments are not a type of treatment in which a new layer is specially laminated on the sheet-like material or gives an appearance change, but is a treatment that can improve the properties and state of the sheet-like material 1. In this case, after detecting the defects 2a and 2b of the sheet 1, the marks 3a and 3b are provided on the surface on which the treatment is performed and on the surface of the bed bag side. The defect marking method of the present invention can withstand a treatment capable of improving the properties and state of such a sheet-like article.

Before such corona discharge treatment, plasma treatment, or flame treatment is performed, defects 2a and 2b of sheet 1 are detected and marks 3a and 3b are formed, but defects 2a and 2b are previously identified. The marks 3a and 3b may be provided after the detection.

Moreover, in the above embodiment, when it is known in advance that defects 2a and 2b occur on the film 1b side of the sheet 1, the axial attachment wheel 7 causes the opposite side to the film 1b. By attaching the marks 3a and 3b to the surface of the substrate 1a, the marks 3a and 3b can always be attached to the surface on the side opposite to the surface on which the defects 2a and 2b are formed in the sheet 1.

In addition, as shown in Fig. 2 (a), the axial attachment grinding wheels 7 which are operated by the solenoids 6 are arranged on both sides of the sheet 1, and the defects 2a, The formation surface of 2b) may be detected, and the marks 3a and 3b may be affixed to the sheet | seat 1 by operating the grindstone 7 of the surface on the opposite side to defect 2a, 2b.

As described above, according to the present invention, marks formed of cutting marks, cutting marks, or wear traces by a marking tool made of a material or blade with a high hardness are formed at a defective part of a sheet-like object that runs continuously. Therefore, it is possible to provide a defect marking method in which the mark is not lost during handling, and therefore, the missed overshoot of the defect can be eliminated. In addition, when the defective side is the use surface, a mark is formed on the non-use surface side, so that a defect marking method capable of avoiding damage to the use surface can be provided.

According to the present invention, since defects of sheet-like objects that continuously run are detected in advance, and before or after the treatment, marks formed of cutting marks, cutting traces, or wear traces by a marking tool are formed. It is possible to provide a defect marking method in which no mark is lost.

According to the present invention, in the case of forming a film on a sheet material, cutting marks, cutting traces, or wear traces by a marking tool made of a material or blade having a high hardness at the tip of a sheet-like base material or a film defect Since the mark is formed, the mark is not lost during handling, and therefore, a defect marking method capable of eliminating the overlooking of the defect can be provided. In addition, when there is a defect on the film, since a mark is formed on the substrate side, a defect marking method capable of avoiding damage to the use surface can be provided.

According to the present invention, in the case where a film is formed on a sheet-like base material and a process using a liquid is applied to the film, a marking tool composed of a material or a blade having a high hardness at the tip of the sheet-like base material or a defective part of the film Since the mark formed by the blade marks, cutting traces, or abrasion traces is formed, the marks are not lost during handling, in particular, by a treatment with a liquid, and the defect marking method capable of eliminating the overlooking of the defects can be eliminated. Can be provided. In addition, when there is a defect on the film, since a mark is formed on the substrate side, a defect marking method capable of avoiding damage to the use surface can be provided.

According to this invention, you may form a film by application | coating or printing with high versatility.

According to the present invention, the film may be formed mainly by plating, vapor deposition, or sputtering, which is highly versatile for forming a metal thin film.

According to the present invention, in the treatment using a liquid, even in a process for the purpose of cleaning, developing, corrosion, or improving the adhesiveness, the mark is not lost, and therefore, defect marking that can eliminate the defects can be avoided. It may provide a method.

According to the present invention, even when the protective layer is formed on the uppermost layer of the sheet-like article, the mark is not lost, and therefore, a defect marking method capable of eliminating the overlooking of the defect can be provided.

According to the present invention, since a mark made of a blade mark, a cutting mark, or abrasion mark is formed at a defective position of a sheet-like article, the mark is lost in the case of processing using an application device or other processing equipment, It is possible to provide a sheet-like article that can be eliminated from seeing a defect. In addition, when the defect side is a use surface, since the mark is formed on the non-use surface side, the sheet-like object in which the defect location was specified which avoided the damage to the use surface can be provided.

According to the present invention, in the case of a sheet-like article in which a film is laminated on a sheet-like base material, a mark made of blade marks, cutting marks, or wear traces is formed at a defective position of the sheet-shaped base material or the coating film, so that the coating device or the In the case of processing using other processing equipment, it is possible to provide a sheet-like article in which defects are specified, in which marks are lost and the defects are not missed. In addition, when a defect exists on a film, since the mark is formed in the non-use surface side, the sheet-like object in which the defect location was specified which avoided the damage of the use surface can be provided.

Claims (12)

Detecting the defect of the sheet-like object by which the film is formed on the sheet-form base material which runs continuously, And A marking tool is used to attach a mark made of blade marks, abrasion marks, or cutting traces to a surface opposite to a surface where a sheet-shaped product defect is formed in or near the defect portion of the sheet-shaped article, The mark is characterized in that the sheet is attached to the surface on the opposite side to the surface where the film of the film-like material A defect marking method comprising the step of performing a treatment using an acidic solution or an alkaline solution to a sheet-like article. The process according to claim 1, further comprising a step of performing a treatment on one surface of the sheet-like article, The mark is a defect marking method, wherein the mark is attached to a surface opposite to the surface on which the sheet-like object is to be treated. The defect marking method according to claim 2, wherein the mark is applied after the sheet-like object is processed. The defect marking method according to claim 2, wherein the mark is applied before the sheet-like object is processed. The defect marking method according to claim 2, wherein the treatment performed on the sheet-like material is corona discharge treatment, oxidation treatment, plasma treatment or flame treatment. The defect marking method according to claim 1, wherein the coating is formed by coating or printing. The defect marking method according to claim 1, wherein the coating is formed by plating, vapor deposition, or sputtering. The defect marking method according to claim 1, wherein the treatment using a liquid is a treatment for the purpose of cleaning treatment, developing treatment, corrosion treatment, or improvement of adhesion. The defect marking method according to claim 1, further comprising a step of forming a protective layer on the sheet-like article. In a sheet-like article having a defect on its surface, It is installed in the vicinity of the defect and has a mark made of blade marks, wear marks or cutting marks, The mark is provided on the surface opposite to a defect, The sheet-like object characterized by the above-mentioned. The sheet-shaped article is made of a sheet-shaped base material and a film formed on the sheet-shaped base material, The mark is provided on the surface of a sheet-like base material, The sheet-like object characterized by the above-mentioned. Defect detection means for optically detecting a defect of a sheet-like article which continuously runs; On the basis of the signal from the defect detecting means, a marking tool for attaching a mark made of blade marks, wear traces or cutting traces is provided on the surface on the side opposite to the surface on which the sheet-shaped article defect is formed in the vicinity of the defect of the sheet-like article. Defect marking device.

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