JP5487885B2 - Cleaning media, cleaning equipment - Google Patents

Description

  The present invention relates to a cleaning medium and a cleaning apparatus for cleaning the deposits on an object to be cleaned.

  Conventionally, various washing and cleaning processes are performed in production processes and recycling processes in factories. In the case of a wet cleaning method using a cleaning liquid or a solvent, there are problems such as safety of the cleaning agent and influence on the global environment. In order to solve this problem, various dry cleaning methods using a solid cleaning medium have been proposed.

  For example, Patent Document 1 discloses a method of removing dirt by continuously contacting and colliding a cleaning medium with an object to be cleaned by high-speed flight and circulation of a thin and easy-to-fly thin cleaning medium in a cleaning tank. Is described.

  Further, in Patent Document 2, the cleaning medium is a flexible thin piece having a bent portion or a curved piece, whereby the cleaning medium adheres to and accumulates on the surface of the object to be cleaned or the wall surface of the cleaning tank. Techniques to prevent are described.

  However, as in Patent Documents 1 and 2, when an ordinary resin film is used as a cleaning medium, sufficient cleaning quality can be obtained for dirt having a low viscosity, such as powder and fixed matter. However, in the case of dirt with high viscosity such as oil, grease, liquid, etc., there is a problem that a cleaning medium sticks to the dirt and a sufficient cleaning effect cannot be obtained.

  Therefore, in view of such a problem, an object of the present invention is to propose a cleaning medium and a cleaning device capable of obtaining a sufficient cleaning effect even for dirt having high viscosity.

To achieve the above object, by colliding with the object to be cleaned in the cleaning medium made of paper made of thin plate members to remove oils adhered to said wash, longitudinal, Clark defined by JIS P8143 and stiffness, the average value of the lateral direction of the Clark stiffness is to provide a cleaning medium which uneven structure of the bellows shape is formed on the thin member 30 or more.

Further, the present invention provides a cleaning device that removes oil adhered to the object to be cleaned by projecting and causing the cleaning medium to collide with the object to be cleaned .

With the cleaning medium and the cleaning apparatus of the present invention, even if the dirt is oil , the cleaning medium does not stick to the object to be cleaned, and a sufficient cleaning effect can be obtained.

Sectional drawing of the washing | cleaning apparatus in washing | cleaning of a present Example. Sectional drawing of the washing | cleaning apparatus after the washing | cleaning of a present Example. The perspective view of the washing | cleaning medium of a present Example. Sectional drawing of the washing | cleaning medium of a present Example. The simplified diagram of a bellows processing apparatus. The perspective view of the washing | cleaning medium of another embodiment (the 1). The side view of the washing | cleaning medium of another embodiment (the 1). The perspective view of the washing | cleaning medium of another embodiment (the 2). The side view of the washing | cleaning medium of another embodiment (the 2). (A) is a cleaning medium of another embodiment, (B) is a top view of the cleaning medium before uneven | corrugated processing, (C) is a side view of (A) (the 1). (A) is a cleaning medium of another embodiment, (B) is a top view of the cleaning medium before uneven | corrugated processing, (C) is a side view of (A) (the 2). (A) is a cleaning medium of another embodiment, (B) is a top view of the cleaning medium before uneven | corrugated processing, (C) is a side view of (A) (the 3). The simplified diagram of a folding processing apparatus. (A) is a cleaning medium of another embodiment, (B) is a top view of the cleaning medium before uneven | corrugated processing, (C) is a side view of (A) (the 4). (A) is a cleaning medium of another embodiment, (B) is a top view of the cleaning medium before uneven | corrugated processing, (C) is a side view of (A) (the 5). (A) is a cleaning medium of another embodiment, (B) is a top view of the cleaning medium before uneven | corrugated processing, (C) is a side view of (A) (the 6). The figure which showed the experimental result.

DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings. In addition, the same number is attached | subjected to the process which performs the structure part which has the same function, and the same process, and duplication description is abbreviate | omitted.
[Explanation of terms]
First, terms used below will be described. The object to be cleaned is an object to be cleaned by the collision of the cleaning medium. The article to be cleaned refers to, for example, a machined part or jig, a used device, or a part. The adhering material is dirt or the like adhering to the object to be cleaned, and particularly oils having high viscosity in this embodiment. Oils include heavy oil, machine oil, cutting oil, fats and oils, grease, and the like.

Further, the flaky cleaning medium of the present embodiment has a thickness of about 0.05 to 0.5 mm and an area of about 5 to 1000 mm ² . Examples of the material include a resin film, cloth, paper, metal, ceramics, and the like. The shape refers to a flaky solid of a rectangle, a circle, an ellipse, a triangle, a polygon, or any other irregular shape.

The cleaning medium of the present embodiment is a flaky cleaning medium that removes deposits on the object to be cleaned by colliding with the object to be cleaned by the cleaning device.
[Cleaning equipment]
Next, the cleaning apparatus 10 that causes the cleaning medium of this embodiment to collide with an object to be cleaned will be described. FIG. 1 shows an example of a simplified cross-sectional view of the cleaning apparatus 10 during cleaning. The cleaning device 10 has a cleaning tank 12. The object to be cleaned 1000 is accommodated and held in the cleaning tank 12 by the holding means. The holding means is an operator's hand or a holding jig.
An air nozzle 14 is provided below the cleaning device 10. The air nozzle 14 ejects an air flow. A large number of cleaning media 100 are projected and collided with the object to be cleaned 1000 by the ejected air flow. Then, the adhering matter adhering to the object to be cleaned is scraped, wiped off or sucked up by the cleaning medium 100.

  Further, the object 1000 to be cleaned may be cleaned entirely by rotating the object 1000 to be cleaned.

  In addition, oils that are solid at room temperature (for example, oil or grease) may adhere to the object to be cleaned. In this case, the object to be cleaned and the deposit are heated in advance by a method such as blowing hot air on the surface of the object to be cleaned, and fluidity is given to the adhered oil, and then the cleaning medium is made to collide. Also good.

FIG. 2 shows a simplified cross-sectional view of the cleaning apparatus 10 after cleaning. When the cleaning of the cleaning object 1000 is completed, the cleaning object 1000 is taken out. And the discharge part 16 (opening-closing part) provided in the lower part of the washing tank 12 is opened, and the used cleaning medium is discharged | emitted. The next time the object to be cleaned 1000 is cleaned, a new cleaning medium is loaded.
[Cleaning medium]
Next, the cleaning medium of this embodiment will be described. FIG. 3 shows a perspective view of an example of the cleaning medium 100, and FIG. 4 shows a cross-sectional view of the cleaning medium 100, the object to be cleaned 1000, and the deposit 1100. As shown in FIGS. 3 and 4, the cleaning medium of this example is subjected to uneven processing in which an uneven structure is formed on a thin plate member. In other words, bending or bending is formed on both surfaces of the thin plate member.

  As described above, the cleaning medium having the concavo-convex structure increases the contact pressure of the convex portion, so that the deposit can be appropriately removed. Further, when the cleaning medium has a concavo-convex structure, the contact area between the cleaning medium and the deposit is reduced even if the deposit has a high viscosity, so that the cleaning medium does not stick to the workpiece.

  Further, the average value of the Clark stiffness defined in JIS P8143 in the longitudinal direction of the thin plate member before being subjected to the uneven processing and the Clark stiffness in the lateral direction (hereinafter referred to as “Clark stiffness average value”) is 30. This is necessary.

  Here, the Clark stiffness is measured based on JIS P8143. This test method fixes one end of a long and narrow test piece, measures the sticking length so that the deflection under its own weight becomes a predetermined standard, and measures the difficulty of bending the test piece (test piece stiffness). Is calculated. That is, Clark stiffness is an index value of difficulty in bending.

  In other words, if the cleaning medium has a high Clark stiffness average value, the concavo-convex structure is maintained even if it collides with the object to be cleaned a plurality of times. Therefore, the cleaning medium does not stick to the highly viscous deposit.

In addition, although there are various types of unevenness processing, the unevenness processing will be described below for each embodiment.
[Embodiment 1]
The cleaning medium 100 according to the first embodiment will be described with reference to FIGS. The cleaning medium 100 is formed by processing a thin plate member into a bellows shape. The processing method will be described later. That is, the concavo-convex structure of the cleaning medium 100 is formed by making it a bellows shape. In other words, the concavo-convex process of Embodiment 1 is a process of making the thin plate member into a bellows shape.

  Since the cleaning medium 100 has a bellows shape, it has a plurality of convex portions 102 and a plurality of concave portions 104 on both surfaces. In other words, the thin plate member is bent or curved.

  When the cleaning medium 100 collides with the article 1000 to be cleaned, the plurality of convex portions 102 come into contact with the deposit 1100 and remove the deposit 1100. Since the convex portion 102 comes into contact with the deposit 1100, the contact pressure is increased as compared with a planar cleaning medium having no concave and convex shapes, so that the deposit removing power is increased.

  Even if the deposit 1100 has a high viscosity, only the convex portion 102 contacts the deposit, so that the cleaning medium 100 does not stick to the workpiece 1000 (the deposit 1100).

  Further, as described above, the cleaning medium 100 of the present embodiment has a strong stiffness because the Clark stiffness average value is 30 or more. Therefore, even if the cleaning medium 100 comes into contact with the object 1000 to be cleaned a plurality of times, the uneven structure is maintained during the cleaning process, and sticking to the object 1000 to be cleaned does not occur. Cleaning pressure) does not decrease.

  Next, a method for processing the cleaning medium 100 according to the first embodiment will be described. The cleaning medium 100 of the first embodiment is formed by an accordion processing apparatus. FIG. 5 shows a simplified diagram of the bellows processing apparatus 120. The bellows processing apparatus 120 in the example of FIG. 5 includes a pair of gear rollers 122 and 124. The tooth tips 122a and 124a of the gear rollers 122 and 124 are both acute angles. The pair of gear rollers 122 and 124 mesh with each other and rotate reversely to each other. The thin plate member 101 is interposed between the pair of gear rollers 122 and 124, and the gear rollers 122 and 124 are rotated while the tooth tips 122 a and 124 a are pressed against both surfaces of the thin plate member 101. With this bellows processing device 120, the thin plate member 101 is processed into a bellows shape.

  Further, the thin plate member 101 may be cut to about several millimeters to 20 mm and then subjected to uneven processing, or may be cut to several millimeters to 20 mm after performing uneven processing. Further, a cutting blade may be incorporated in the pair of gear rollers 122 and 124 (see FIG. 13), and cutting may be performed simultaneously with the uneven processing. The shape at the time of cutting is preferably rectangular from the viewpoint of ease of processing, but it can also be cut into parallelograms, triangles, circles, and the like.

  Further, as shown in FIG. 4, the distance D between the protrusions 102 and the recesses 104 in the height direction (that is, the height difference D between the recesses 104 and the protrusions 102) is the thickness of the cleaning medium 100. It is preferable that the length is longer than t. This is because the distance D between the concaves and convexes is increased, and the contact pressure of the cleaning medium 100 to the object to be cleaned 1000 can be increased.

Moreover, it is preferable that the distance D between the projections and depressions is twice or more the thickness d of the deposit 1100. This is because, if the distance D between protrusions and recesses is twice or more the thickness d, the deposit 110 is accommodated in the recess 102 and the deposit 1100 is appropriately removed.
[Embodiment 2]
FIG. 6 is a perspective view of the cleaning medium 200 according to the second embodiment, and FIG. 7 is a cross-sectional view of the cleaning medium 200. As shown in FIGS. 6 and 7, the unevenness processing of the cleaning medium 200 according to the second embodiment is a process of bonding the convex member 204 onto the thin plate member 202. By the joining process of the convex member 204, an uneven structure composed of the convex portion 208 and the concave portion 206 is formed. In the example of FIG. 6, the convex member 204 has an elongated shape, and a plurality of convex members 204 are respectively joined in parallel to both surfaces of the thin plate member 202. The joining method is, for example, adhesion or fusion.

In the case of the cleaning medium 200, the material of the thin plate member 202 and the material of the convex member 204 can be made different. For example, the convex member 204 may be made of a material having a high oil absorption capacity, or may be made of a hard material in order to remove fixed dirt. That is, without changing the thin plate member 202, the material of the convex member 204 can be changed according to the kind of the deposit. In addition, a high-strength material can be used for the thin plate member 202. That is, the cleaning performance and durability of the cleaning medium 200 can be improved.
<Modification of Cleaning Medium 200>
FIG. 8 shows a cleaning medium 200 ′, which is a modification of the cleaning medium 200, and FIG. 9 shows a cross-sectional view of the cleaning medium 200 ′. In the cleaning medium 200 ′, a plurality of elongated convex members 204 are joined in a grid pattern on both surfaces of the thin plate member 202. In the case of the cleaning medium 200 ′, the plurality of convex portions 208 can be brought into contact with the deposit regardless of the moving direction of the cleaning medium 200 ′ on the workpiece 1000, so that the deposit can be removed. .

Further, as described in the first embodiment, the distance D between the concave and convex portions 206 and the convex portion 208 (see FIGS. 7 and 9) is preferably twice or more the thickness d of the deposit.
[Embodiment 3]
FIG. 10A shows a perspective view of the cleaning medium 300 of the third embodiment, FIG. 10B shows a plan view of the thin plate member 302 before the uneven processing of the cleaning medium 300, and FIG. A side view of 10 (A) is shown. First, a processing method of the cleaning medium 300 will be described. In FIG. 10B, a thick line indicates a cut line, an alternate long and short dash line indicates a mountain fold, and a broken line indicates a valley fold. Further, it is assumed that the shape of the thin plate member 302 in FIG. 10 is a rectangular shape.

  The concavo-convex process of the third embodiment is a process in which a cut 304 is made in the thin plate member 302 and is folded perpendicularly to the cut 304. An uneven structure is formed by this processing.

  The uneven processing of the cleaning medium 300 will be specifically described with reference to FIG. As shown in FIG. 10 (B), a linear notch 304 is formed at a substantially central portion of the thin plate member 302. A line extending from one end 304a of the notch 304 to the outside in a direction perpendicular to the notch 304 is defined as a first valley fold line 302c. In addition, a line that extends outward from the other end 304b of the notch 304 in a direction perpendicular to the notch 304 is defined as a first mountain fold line 302d.

  In addition, a line that is perpendicular to the notch 304 and is opposite to the first valley fold line 302c and that extends outward from the portion 304c from the first valley fold line 302c in the middle of the notch 304 is a second valley fold. Let it be line 302e. A line that is perpendicular to the notch 304 and is opposite to the first mountain fold line 302d in the direction opposite to the first mountain fold line 302d is a line that extends outward from the portion 304c from the first mountain fold line 302d to the second mountain fold line 302f. And

  When the first valley fold line 302c, the second valley fold line 302e, the first mountain fold line 302d, and the second mountain fold line 302f are folded, a shape as shown in FIG. As shown in FIG. 10A, the cleaning medium 300 has a gap 306, and a convex portion 308 and a concave portion 310 are formed with the gap 306 interposed therebetween. A plurality (four in FIG. 10A) of edge portions 320 having an edge shape are formed on the periphery of the gap 306.

  Thus, the notch 304 is made in the thin plate member 302, and the process of being folded perpendicularly to the notch 304 is performed, so that the concavo-convex structure (the convex portion 308 and the concave portion 310) is formed. Further, a plurality of edge portions 320 are formed, and the edge portions 320 remove deposits in the same manner as the convex portions 308. Therefore, since there are many places (the convex part 308 and the edge part 320) which contact with a deposit | attachment, the removal power of a deposit | attachment improves and it does not stick to a deposit | attachment.

Further, the unevenness distance D (see FIG. 10C) is preferably at least twice the thickness d of the deposit.
<Regarding First Modification of Cleaning Medium 300>
Next, a cleaning medium 300 ′ that is a first modification of the cleaning medium 300 will be described. FIG. 11A is a perspective view of the cleaning medium 300 ′, FIG. 11B is a plan view of the thin plate member 302 before the uneven processing of the cleaning medium 300 ′, and FIG. A side view of A) is shown.

  As shown in FIG. 11 (B), a linear notch 304 is formed at a substantially central portion of the thin plate member 302. A line from the center of the notch 304 that is in the direction perpendicular to the notch 304 is a mountain fold line 302g. A line in the opposite direction to the mountain fold line 302g is defined as a valley fold line 302h. Then, when the mountain fold line 302g and the valley fold line 302h are folded, a cleaning medium 300 ′ having a shape as shown in FIG. 11A is completed.

  The cleaning medium 300 ′ has a gap 306, and a convex portion 308 and a concave portion 310 are formed across the gap 306. A plurality (four in the example of FIG. 11A) of edge portions 320 are formed on the periphery of the gap 306. Moreover, about the distance D between unevenness | corrugations, it shows in FIG.11 (C).

If it is cleaning medium 300 ', a processing method can be simplified.
<About Second Modification of Cleaning Medium 300>
Next, a cleaning medium 300 ″ that is a second modification of the cleaning medium 300 will be described. FIG. 12A is a perspective view of the cleaning medium 300 ′, FIG. 12B is a plan view of the thin plate member 302 before the uneven processing of the cleaning medium 300 ′, and FIG. A side view of A) is shown.

  As shown in FIG. 12B, a first notch 304 and a second notch 305, which are straight and parallel to each other, are placed at the center of the thin plate member 302. A line between the first notch 304 and the second notch 305 and connecting the end portions 304a and 305a facing each other of the first notch 304 and the second notch 305 is defined as a first mountain fold line 302q.

  A line between the first cut 304 and the second cut 305 and perpendicular to the first cut 304 and the second cut 305 is defined as a first valley fold line. In addition, a line that is perpendicular to the first cut 304 and extends outward from the other end 304b of the first cut 304 is a second valley fold line 302r. A line that is perpendicular to the second cut 305 and extends outward from the other end 305b of the second cut 305 is defined as a third valley fold line 302t.

  In addition, a line that is perpendicular to the first notch 304 and goes outward from the middle is defined as a second mountain fold line 302s. A line that is perpendicular to the second notch 305 and goes outward from the middle is defined as a third mountain fold line 302h.

  Then, the valley fold lines 302p, 302r, and 302t and the mountain fold lines 302q, 302s, and 302u are folded to complete the cleaning medium 300 ″ shown in FIG.

  The cleaning medium 300 ″ has two voids 306, and a convex portion 308 and a concave portion 310 are formed. A plurality (eight in FIG. 12A) of edge portions 320 are formed on the periphery of the two gaps 306. Moreover, about the distance D between unevenness | corrugations, it shows in FIG.12 (C).

In the cleaning medium 300 ″, since the number of the edge portions 320 is large, it is possible to further improve the adhesion removing ability.
<Processing Method for Cleaning Medium 300>
Next, a processing example for forming the cleaning media 300, 300 ′, and 300 ″ will be described. In order to form the cleaning media 300, 300 ′, 300 ″, a folding device 350 is used as shown in FIG. A folding device 350 shown in the example of FIG. 13 includes an unevenness processing roller 306 and an unevenness processing roller 308. In this example, the uneven processing roller 306 and the uneven processing roller 308 have the same shape. Further, since the unevenness processing roller 306 and the unevenness processing roller 308 are meshed with each other, they rotate reversely to each other.

The uneven processing roller 306 includes a gear 3061, a gear 3062, and a cutting blade 304 . The cutting blade 304 is sandwiched between the gear 3061 and the gear 3062. The uneven processing roller 308 has the same shape. The tooth shapes of the gears 3061 and 3062 are acute.

The thin plate member 302 is interposed between the uneven processing roller 306 and the uneven processing roller 308. When the concavo-convex processing roller 306 and the concavo-convex processing roller 308 rotate, the thin plate member 302 is brought into pressure contact with the teeth of the concavo-convex processing roller 306 and the blade of the cutting blade 304, and the cutting and folding processing is performed simultaneously.
<Third Modification of Cleaning Medium 300>
Next, 300 ′ ″ that is a third modification of the cleaning medium 300 will be described. FIG. 14A shows a perspective view of the cleaning medium 300 ′ ″, FIG. 14B shows a plan view of the thin plate member 302 before the uneven processing of the cleaning medium 300 ′ ″, and FIG. FIG. 14A shows a side view of FIG.

  As shown in FIG. 14B, a first cut 304 and a second cut 305 are made from both ends of the thin plate member 302. A line extending outward from the end 304a of the first cut 304 in a direction perpendicular to the first cut 304 is defined as a first valley fold line 302w. A line that is opposite to the valley fold line 302w and that extends outward from the end 304a is referred to as a first mountain fold line 302y.

  A line extending outward from the end 305a of the second cut 305 in the direction perpendicular to the second cut 305 is defined as a second mountain fold line 302v. A line that is opposite to the second mountain fold line 302v and that extends outward from the end 305a is referred to as a second valley fold line 302x.

  Then, when the first valley fold line 302w, the first mountain fold line 302y, the second mountain fold line 302v, and the second valley fold line 302x are folded, the cleaning medium 300 '' having a shape as shown in FIG. 'become.

In the cleaning medium 300 ′ ″ shown in FIG. 14A, four convex portions 308 are formed. Then, the peripheral edge of the convex portion 308 acts as the edge portion 320. Moreover, about the distance D between unevenness | corrugations, it shows in FIG.14 (C). Since the edge part also increases in this modified example 3 due to the cutting, it is possible to further improve the ability to remove deposits.
[Embodiment 4]
Next, the cleaning medium 400 according to the fourth embodiment will be described. FIG. 15A shows a perspective view of the cleaning medium 400, FIG. 15B shows a plan view of the thin plate member 402 before the uneven processing of the cleaning medium 400, and FIG. 15C shows FIG. The side view of is shown. The concavo-convex structure of the cleaning medium 400 is formed by cutting the thin plate member 402 in a curved shape or a bent shape, and folding the cut portion 404 at a predetermined angle with the thin plate member.

  As shown in FIG. 15 (B), a plurality of (nine in the example of FIG. 15 (B)) incisions 404 having a bent shape (polygonal line shape or L-shape) are formed inside the thin plate member 402. Then, the cut portion (hereinafter referred to as “cut portion”) 406 is folded into a mountain fold or a valley fold. Here, the folding portion refers to a linear portion connecting both ends 404 a and 404 b of the bent notch 404. In the example of FIG. 15B, the mountain fold and the valley fold are reversed at the adjacent cut portions 406.

When the cut portion 406 is folded into a mountain fold or a valley fold, the cleaning medium 400 shown in FIG. Here, the mountain fold or the valley fold is folded at a predetermined angle with the flat plate portion of the thin plate member 402. When the cut portion 406 is folded into a mountain fold or a valley fold, a gap 408 is generated, and a convex portion 410 and a concave portion 412 are formed. Further, the peripheral edge of the convex portion 410 acts as an edge portion 414.
<Modification of Cleaning Medium 400>
Next, a cleaning medium 400 ′, which is a modification of the cleaning medium 400, will be described. FIG. 16A is a perspective view of the cleaning medium 400 ′, FIG. 16B is a plan view of the thin plate member 402 before the uneven processing of the cleaning medium 400 ′, and FIG. A side view of A) is shown. The cleaning medium 400 differs from the cleaning medium 400 in that the thin plate member 402 has a bent notch 404 but the cleaning medium 400 ′ has a curved (or curved) notch 420 in the thin plate member 402. It is different in point. The other parts are the same as those of the cleaning medium 400, and thus description thereof is omitted. Note that a cut portion 406 illustrated in FIG. 16B is a linear portion connecting both ends 420 a and 420 b of the bent cut 420.

The processing method of the cleaning media 400 and 400 ′ is not particularly illustrated, but for example, the cutting and folding may be performed simultaneously by a punch and die.
[About cellulose]
When, for example, a petroleum-derived resin film is used as the cleaning medium material, incineration of the used cleaning medium will result in CO2 emission and environmental degradation. However, by using a paper containing cellulose as a raw material of the cleaning medium, it is possible to suppress the emission of CO2 due to the incineration of the cleaning medium that has been used from the viewpoint of carbon neutral. Accordingly, it is preferable to use paper containing cellulose or other materials as the cleaning medium.
[About oil absorption]
Next, the oil absorption of the cleaning medium will be described. Here, the oil absorption is the JAPAN TAPPI paper pulp test method no. It is measured based on 67 "Paper and paperboard-Oil absorption test method". This test method measures the time required for the specified oil to penetrate into the surface of the test piece (cleaning medium). And it became clear by the experiment mentioned later that it is preferable that oil absorption is 0 to 30 seconds (that is, 30 seconds or less).

In other words, if the oil absorption of the cleaning medium is 30 seconds or less, if the deposit is oil, the oil is absorbed by the cleaning medium even if it is not scraped off or a short cleaning process. The oil can be removed appropriately. Further, if the oil can be absorbed, the oil attached to the cleaning medium can be prevented from reattaching to the object to be cleaned.
[About tear strength]
When the adhering substance is an oil component, it is conceivable that tissue paper, kitchen paper, oil removing paper, or the like made of paper or non-woven fabric that can wipe off oil or moisture is finely cut and used as a cleaning medium.

  However, tissue paper or the like is a bulky and low density material, so it has high oil absorption capacity but low strength and rigidity. For this reason, when tissue paper or the like is used as a cleaning medium, there is a problem that it unwinds and becomes cotton-like during repeated collisions and a sufficient contact force cannot be obtained. In addition, the unraveled fiber or paper dust component adheres to the object to be cleaned, and it becomes difficult to remove the dirt.

Therefore, as shown in the experimental results to be described later, when the tear strength of the cleaning medium (that is, the thin plate member) before the uneven processing is set to 300 mN or more, the cleaning medium is not unraveled, and the above-described problem occurs. Absent. In addition, when the cleaning medium is cut as in the third and fourth embodiments, the tear strength needs to be sufficiently large.
[Experimental result]
Next, experimental results that consider oil absorption and tear strength will be described. FIG. 17 shows the experimental results. As the cleaning medium used in the experiment, PPC paper (dry copying machine paper) was used as Example 1, and clean paper was used as Example 2. Further, as Comparative Example 1, PPC not subjected to uneven processing was used, Newspaper was used as Comparative Example 2, Tempura laying paper was used as Comparative Example 3, Coated paper was used as Comparative Example 4, and Resin was used as Comparative Example 5. A film was used.

  FIG. 17 shows the oil absorption before concavo-convex processing, the Clark stiffness average value, the tear strength, and the cleaning results for Examples 1 and 2 and Comparative Examples 1 to 4. As for the cleaning results, ◯ indicates “good”, Δ indicates “not good”, and x indicates “bad”.

  For example, the PPC paper of Example 1 has an oil absorption of 20 seconds, an average Clark stiffness of 73, a tear strength of 560 mN, and a cleaning result of ◯ (good). Further, as shown in Comparative Example 1, when the uneven processing is not performed, the cleaning medium sticks to the object to be cleaned. From this, it can be understood that the uneven processing on the cleaning medium prevents sticking to the object to be cleaned.

  Further, in the newspaper (Comparative Example 2) having a low Clark stiffness average value and the tempura laying paper (Comparative Example 3), the cleaning medium is unwound and the paper part adheres to the object to be cleaned, and the cleaning result is Δ (not good). ) Results. In addition, the coated paper (Comparative Example 4) and the resin film (Comparative Example 5), which have a large oil absorption, could not absorb the deposits as oil, and the cleaning result was x (bad). .

  From these experimental results, in order to prevent sticking, the Clark stiffness average value needs to be 30 or more. The oil absorption is preferably 30 seconds or less, and the tear strength is preferably 300 mN or more.

Moreover, as shown in Example 1 of the experimental results shown in FIG. 17, PPC paper is excellent in terms of oil absorption and tear strength of paper, and can be suitably used. In addition, it is preferable to use used paper because it can reduce the environmental load and cost as a consumable.
[Effect of the invention]
In the cleaning medium of the present example, as described in the first to fourth embodiments, a concavo-convex structure is formed by performing concavo-convex processing on a thin plate member. With this uneven structure, the cleaning medium can remove the deposit without sticking to the highly viscous deposit. Moreover, since the average value of the Clark stiffness of the cleaning medium is 30 or more, the uneven structure is maintained even during the cleaning of the object to be cleaned, and the cleaning medium does not adhere to the object to be cleaned.

DESCRIPTION OF SYMBOLS 10 ... Cleaning apparatus 12 ... Cleaning tank 14 ... Air nozzle 100 ... Cleaning medium 1000 ... Object to be cleaned 1100 ... Deposit

JP 2007-245079 A JP 2008-149253 A

Claims (5)

By striking the object to be cleaned in the cleaning medium made of paper made of thin plate members to remove oils adhered to said wash,
Vertical, and Clark stiffness defined by JIS P8143, lateral cleaning medium uneven structure is formed of the thin plate members in an accordion shape average value is 30 or more and the Clark stiffness. JAPAN TAPPI Paper Pulp Test Method No. 67. The cleaning medium according to claim 1 , wherein the oil absorption specified in 67 “Paper and paperboard—Oil absorption test method” is 30 seconds or less. The cleaning medium according to claim 1 or 2 , wherein the tear strength specified by JIS P8116 is 300 mN or more. The washing medium according to any one of claims 1 to 3, wherein cellulose is contained. A cleaning apparatus for removing oil adhering to the object to be cleaned by projecting the cleaning medium according to any one of claims 1 to 4 onto the object to be cleaned.

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