Cleaning roller

Abstract

To provide a cleaning roller capable of preventing adhesive from seeping out of a foam layer.SOLUTION: A cleaning roller 30 provided herein comprises an adhesive layer 32, a resin film layer 33 containing a thermoplastic resin, and a foam layer 34 laminated in the described order on an outer periphery of a shaft 31.SELECTED DRAWING: Figure 2

Description

Technical Field

[0001] The present disclosure relates to a cleaning roll.

Background Art

[0002] Patent Document 1 describes a cleaning roll that abuts on a charging roll and cleans its surface by rubbing. Patent Document 2 describes a configuration in which an elastic layer of a cleaning roll and a core body of the cleaning roll are adhered by an adhesive.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0004] In a configuration in which a layer containing a foam layer and an adhesive is in direct contact, there is a concern that the adhesive may ooze out from the foam layer. When the adhesive oozes out from the foam layer, inconveniences such as the adhesive migrating to the charging roll occur, so improvement is desired. The present disclosure has been made in view of the above circumstances, and an object thereof is to provide a cleaning roll capable of suppressing the adhesive from oozing out from the foam layer. The present disclosure can be realized in the following forms.

Means for Solving the Problems

[0005] A cleaning roll in which an adhesive layer, a resin film layer containing a thermoplastic resin, and a foam layer are laminated in this order on the outer peripheral side of a shaft.

Effects of the Invention

[0006] According to the present disclosure, it is possible to provide a cleaning roll that can suppress the seepage of an adhesive from a foamed layer.

Brief Description of the Drawings

[0007]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Embodiments for Carrying Out the Invention

[0008] Here, desirable examples of the present disclosure are shown. [1] A cleaning roll in which an adhesive layer, a resin film layer containing a thermoplastic resin, and a foamed layer are laminated in this order on the outer peripheral side of a shaft. [2] The foamed layer is composed of an open-cell foam having an open-cell structure, The cleaning roll according to [1], wherein at least a part of the protrusions due to the cell skeleton on the surface of the foamed layer is buried in the resin film layer. [3] The cleaning roll according to [1] or [2], wherein the foamed layer is spirally arranged on the outer peripheral side of the shaft. [4] The cleaning roll according to [1] or [2], wherein the resin film layer contains one or more resins selected from the group consisting of EVA and polyethylene.

[0009] Hereinafter, the present disclosure will be described in detail. In this specification, for a description using "-" for a numerical range, unless otherwise specified, it includes the lower limit value and the upper limit value. For example, in the description of "10-20", both the lower limit value "10" and the upper limit value "20" are included. That is, "10-20" has the same meaning as "10 or more and 20 or less". Also, in this specification, the upper limit value and the lower limit value of each numerical range can be arbitrarily combined.

[0010] 1. Cleaning roll 30 As shown in FIGS. 1 to 4, in the cleaning roll 30 of the present embodiment, an adhesive layer 32, a resin film layer 33 containing a thermoplastic resin, and a foaming layer 34 are laminated in this order on the outer peripheral side of the shaft 31. In FIGS. 1 and 4, the adhesive layer 32 and the resin film layer 33 are shown omitted.

[0011] The cleaning roll 30 contacts while rotating with a charging roll 18 provided with a charging material for charging the surface 10a of the photosensitive drum 10 of the image forming apparatus 1. Examples of the image forming apparatus 1 include an electrophotographic image forming apparatus such as a copying machine, a printer, a facsimile machine, and a multifunction machine thereof. FIG. 1 is a schematic view showing a main part of a laser printer as the image forming apparatus 1. This laser printer includes a photosensitive drum 10, a developing roll 12, a transfer roll 14, a fixing roll 16, a charging roll (charge roll) 18, a cleaning roll 30, and the like. This type of laser printer uniformly charges the surface 10a of the photosensitive drum 10 with the charging roll 18, irradiates the surface 10a of the charged photosensitive drum 10 with a pattern of print data by laser light to form a latent image on the surface 10a. Then, toner is attached to the latent image by the developing roll 12, and after the toner T on the surface 10a of the photosensitive drum 10 is transferred to the printing paper P by the transfer roll 14 located on the back side of the printing paper P, the toner T is fixed to the printing paper P by the fixing roll 16.

[0012] The charging roll 18 rotates in synchronization with the rotation of the photosensitive drum 10 with its outer peripheral surface 18a in contact with the surface 10a of the photosensitive drum 10. Therefore, toner remaining on the surface 10a of the photosensitive drum 10, paper dust generated from printing paper, etc. (hereinafter referred to as "foreign matter") may adhere to the outer peripheral surface 18a of the charging roll 18. The cleaning roll 30 is provided to remove the foreign matter adhering to the outer peripheral surface 18a of the charging roll 18.

[0013] The cleaning roll 30 rotates about the shaft 31 with the contact surface 34b of the foamed layer 34 in contact with the outer peripheral surface 18a of the charging roll 18. The cleaning roll 30 can be elastically deformed in the state where the foamed layer 34 is in contact with the charging roll 18 (see Fig. 2). The cleaning roll 30 rotates together with the charging roll 18 and wipes off the foreign matter adhering to the outer peripheral surface 18a of the charging roll 18 with the foamed layer 34. The cleaning roll 30 may be configured to rotate around with the charging roll 18. Hereinafter, the shaft 31, the adhesive layer 32, the resin film layer 33, and the foamed layer 34 constituting the cleaning roll 30 will be described.

[0014] The shaft 31 is, for example, a rod-shaped member having a substantially circular cross-section. The material of the shaft 31 is not particularly limited. The shaft 31 may be made of metal, or may be a composite material of a fiber material such as a thermosetting resin, a thermoplastic resin, carbon fiber, and resin.

[0015] The adhesive layer 32 is a layer containing an adhesive. The adhesive layer 32 adheres the foamed layer 34 to the shaft 31 via the resin film layer 33. The material of the adhesive is not particularly limited. The adhesive is preferably one or more selected from acrylic adhesives and rubber adhesives, and more preferably an acrylic adhesive. The adhesive layer 32 may or may not have a base material. The adhesive layer 32 can be preferably configured by a double-sided adhesive tape having adhesives on both sides of a base material such as a non-woven fabric.

[0016] The thickness of the adhesive layer 32 is not particularly limited. From the viewpoint of ensuring sufficient adhesive strength, the thickness of the adhesive layer 32 is preferably 30 μm or more, more preferably 50 μm or more, and still more preferably 100 μm or more. From the viewpoint of reducing the diameter of the cleaning roll 30, the thickness of the adhesive layer 32 is preferably 250 μm or less, more preferably 200 μm or less, and still more preferably 160 μm or less. From these viewpoints, the thickness of the adhesive layer 32 is preferably 30 μm or more and 250 μm or less, more preferably 50 μm or more and 200 μm or less, and still more preferably 100 μm or more and 160 μm or less.

[0017] The resin film layer 33 is a layer of a resin film containing a thermoplastic resin. From the viewpoint of suppressing the leaching of the adhesive, the resin film layer 33 is preferably a film layer having a lower open pore ratio than the foamed layer 34, and more preferably a non-porous film layer. The open pore ratio can be calculated, for example, by structural analysis using a three-dimensional measurement X-ray CT apparatus. In the present specification, the "non-porous film" means a film in which through-holes are not intentionally formed. For example, the "non-porous film" is a film that has not been subjected to a treatment for forming through-holes, and a state in which fine through-holes are generated due to unintentional factors during the process of manufacturing the film is also considered "non-porous". The treatment for forming through-holes is, for example, a punching treatment, a foaming treatment for forming a continuous bubble structure, or the like.

[0018] The type of the thermoplastic resin is not particularly limited. The thermoplastic resin is, for example, one or more selected from polyolefin resins, thermoplastic elastomers, thermoplastic polyesters, polyamide resins, polyurethanes, polystyrene resins, cellophane, polyacrylate esters, acrylic resins, and polyvinyl chloride resins. The polyolefin resin preferably includes a polyethylene resin, and more preferably includes one or more selected from ethylene-vinyl acetate copolymer (EVA), polyethylene (PE), polybutene, ethylene-propylene copolymer (EPM), ethylene-propylene-diene copolymer (EPDM), ethylene-ethyl acrylate copolymer (EEA), ethylene-ethyl acrylate-maleic anhydride copolymer (EEAMAH), ethylene-glycidyl methacrylate copolymer (EGMA), and ethylene-methacrylic acid copolymer (EMAA). Among these, from the viewpoint of various physical properties such as melting temperature and elongation, it is more preferable to include at least one of ethylene-vinyl acetate copolymer and polyethylene, and even more preferable to include both ethylene-vinyl acetate copolymer and polyethylene. The polyethylene is preferably low-density polyethylene or high-density polyethylene.

[0019] The melting temperature of the thermoplastic resin is not particularly limited. From the viewpoint of ensuring adhesion to the adherend, the melting temperature of the thermoplastic resin is preferably 60°C or higher, more preferably 70°C or higher, and even more preferably 80°C or higher. From the viewpoint of the heat resistance of the adherend, the melting temperature of the thermoplastic resin is preferably 140°C or lower, more preferably 120°C or lower, and even more preferably 110°C or lower. From these viewpoints, the melting temperature of the thermoplastic resin is preferably 60°C or higher and 140°C or lower, more preferably 70°C or higher and 120°C or lower, and even more preferably 80°C or higher and 110°C or lower from the viewpoint of ensuring adhesion to the adherend.

[0020] The thickness of the resin film layer 33 is not particularly limited. From the perspective of ensuring sufficient adhesive strength, the thickness of the resin film layer 33 is preferably 10 μm or more, more preferably 20 μm or more, and still more preferably 40 μm or more. From the perspective of reducing the diameter of the cleaning roll 30, the thickness of the resin film layer 33 is preferably 100 μm or less, more preferably 80 μm or less, and still more preferably 60 μm or less. From these perspectives, the thickness of the resin film layer 33 is preferably 10 μm or more and 100 μm or less, more preferably 20 μm or more and 80 μm or less, and still more preferably 40 μm or more and 60 μm or less.

[0021] The foam layer 34 is a layer of a foam selected from a resin foam and a rubber foam. The types of the resin foam and the rubber foam are not particularly limited. The resin foam is, for example, a foam of a resin selected from a polyurethane resin, a polyolefin-based resin, and an acrylic-based resin. The polyurethane resin foam may be a polyether-based polyurethane resin foam or a polyester-based polyurethane resin foam. The polyurethane resin foam is preferably a polyether-based polyurethane resin foam from the perspectives of hydrolysis resistance, ease of winding, etc. The rubber foam is, for example, a foam of a rubber selected from natural rubber (NR), acrylonitrile-butadiene rubber (NBR), styrene-butadiene rubber (SBR), and chloroprene rubber (CR).

[0022] From the perspective of ease of elastic deformation, the foam layer 34 preferably comprises an open-cell foam having an open-cell structure. The open-cell foam usually has a three-dimensional network-like cell skeleton. The open-cell foam may have a cell membrane as long as it has at least a cell skeleton, or may not have a cell membrane. The number of cells of the open-cell foam is not particularly limited. When measured according to the method based on JIS K6400-1:2004, the number of cells of the open-cell foam is, for example, 30 cells / 25 mm or more and 200 cells / 25 mm or less, or may be 40 cells / 25 mm or more and 150 cells / 25 mm or less.

[0023] The density of the foam constituting the foam layer 34 (conforming to JIS K7222:2005) is not particularly limited. From the viewpoint of suppressing the leaching of the adhesive, the density of the foam is preferably 20 kg / m 3 or more, more preferably 30 kg / m 3 or more, still more preferably 40 kg / m 3 or more, and may be 50 kg / m 3 or more, 60 kg / m 3 or more. From the viewpoint of ease of winding, the density of the foam is preferably 110 kg / m 3 or less, more preferably 95 kg / m 3 or less, still more preferably 90 kg / m 3 or less. From these viewpoints, the density of the foam layer 34 is preferably 20 kg / m 3 or more and 110 kg / m 3 or less, more preferably 30 kg / m 3 or more and 95 kg / m 3 or less, still more preferably 40 kg / m 3 or more and 90 kg / m 3 or less.

[0024] The thickness of the foam layer 34 is not particularly limited. From the viewpoint of ensuring sufficient adhesive strength, the thickness of the foam layer 34 is preferably 1 mm or more, more preferably 1.5 mm or more, and still more preferably 2 mm or more. From the viewpoint of reducing the diameter of the cleaning roll 30, the thickness of the foam layer 34 is preferably 7 mm or less, more preferably 6 mm or less, and still more preferably 4 mm or less. From these viewpoints, the thickness of the foam layer 34 is preferably 1 mm or more and 7 mm or less, more preferably 1.5 mm or more and 6 mm or less, and still more preferably 2 mm or more and 4 mm or less.

[0025] The foam layer 34 and the resin film layer 33 may be directly joined. From the viewpoint of ensuring mechanical adhesion strength, as shown in FIG. 3, it is preferable that at least a part of the protrusions 35 formed by the cell skeleton on the surface of the foam layer 34 is embedded in the resin film layer 33. The protrusions 35 formed by the cell skeleton can be preferably formed, for example, by cutting a continuous foam. In other words, the mounting surface 34a of the foam layer 34 described later may be the cut surface of the continuous foam. Then, by bringing the softened or melted resin film into contact with the mounting surface 34a, a configuration in which at least a part of the protrusions 35 formed by the cell skeleton is embedded in the resin film layer 33 can be preferably realized.

[0026] The resin film layer 33 and the adhesive layer 32 may be directly joined or joined via another layer. When the resin film layer 33 and the adhesive layer 32 are directly joined, sufficient joining strength can be realized by appropriately designing the combination of the resin film layer 33 and the adhesive layer 32. As a combination of the resin film layer 33 and the adhesive layer 32, for example, a combination of a resin film layer 33 containing an ethylene copolymer and an acrylic adhesive is suitable.

[0027] The arrangement mode of the foam layer 34 is not particularly limited as long as the charging roll 18 can be cleaned. The foam layer 34 of the cleaning roll 30 shown in FIG. 4 is spirally arranged on the outer peripheral side of the shaft 31. In addition to being spirally arranged, the foam layer may be, for example, cylindrically arranged on the outer peripheral side of the shaft 31. In the form in which the foam layer is cylindrically arranged, a sheet-like foam layer may be wound around the outer peripheral surface of the shaft to form a cylinder, or the foam layer may be formed into a cylinder.

[0028] Specifically, before being wound around the shaft 31, the foam layer 34 in FIG. 4 has a shape that is long in one direction and has a rectangular shape in a cross-sectional view perpendicular to the longitudinal direction. The foam layer 34 has an attachment surface 34a, a contact surface 34b that contacts the outer peripheral surface 18a of the charging roll 18 on the side opposite to the attachment surface 34a, and a first side surface 34c and a second side surface 34d located between the attachment surface 34a and the contact surface 34b. The attachment surface 34a is a surface facing the resin film layer 33 side, for example, a surface to which the resin film layer 33 is directly joined. In FIG. 4, the resin film layer 33 and the adhesive layer 32 are omitted. When the foam layer 34 has a shape that is long in one direction, the resin film layer 33 may have the same width dimension and length dimension as the foam layer 34. Similarly, the adhesive layer 32 may also have the same width dimension and length dimension as the foam layer 34.

[0029] 2. Manufacturing method of the cleaning roll 30 The manufacturing method of the cleaning roll 30 of the present embodiment is not particularly limited. With reference to FIG. 5, an example of the manufacturing method of the cleaning roll 30 will be described. In the following description, the adhesive tape, resin film, and foam in the state before the adhesive layer 32, resin film layer 33, and foam layer 34 are laminated are referred to as "adhesive tape 32p", "resin film 33p", and "foam 34p", respectively. Also, the upper side of the paper surface of FIG. 5 is referred to as the upper side, and the lower side of the paper surface is referred to as the lower side for explanation. These upper and lower sides do not necessarily indicate the vertical direction during manufacturing. For example, during manufacturing, each part may be arranged in a state where the upper and lower sides of FIG. 5 are reversed.

[0030] The cleaning roll 30 can be manufactured, for example, by laminating the adhesive tape 32p and the resin film 33p, laminating the foam 34p on the laminate of the adhesive tape 32p and the resin film 33p (hereinafter, also referred to as the first laminate 40), and attaching the laminate of the foam 34p, resin film 33p, and adhesive tape 32p (hereinafter, also referred to as the second laminate 50) to the shaft 31.

[0031] The lamination of the adhesive tape 32p and the resin film 33p can be performed, for example, by adhering one adhesive surface of the adhesive tape 32p to one surface (lower surface) of the resin film 33p. Thus, the first laminate 40 is obtained. At this time, from the viewpoint of workability, it is preferable that the other adhesive surface of the adhesive tape 32p is covered with a release paper (not shown).

[0032] The foam 34p can be formed, for example, by cutting out a sheet-like foam 34p from a block of polyurethane foam (not shown). The thickness of the sheet-like foam 34p is substantially the same as the thickness of the foam layer 34 (height dimension H in FIG. 4).

[0033] The lamination of the foam 34p on the first laminate 40 can be performed, for example, by heating the resin film 33p at a predetermined heating temperature with the upper surface of the resin film 33p and the lower surface of the foam 34p in contact. At this time, by immersing at least a part of the resin film 33p in the foam 34p, the adhesive strength between the resin film layer 33 and the foam layer 34 can be suitably ensured. When the foam 34p is placed vertically upward with respect to the resin film 33p, the protrusion 35 in FIG. 3 can be suitably embedded to such an extent that it does not penetrate the resin film 33p due to the self-weight of the foam 34p.

[0034] The heating temperature is preferably, for example, not less than the melting temperature of the resin film 33p - 10°C, more preferably not less than the melting temperature of the resin film 33p - 5°C, and even more preferably not less than the melting temperature of the resin film 33p. The upper limit value of the heating temperature is not particularly limited and can be appropriately set according to the heat resistance temperature of the foam layer 34 and the resin film 33p. The upper limit value of the heating temperature is usually 200°C or less. When the resin film 33p is a polyethylene-based resin, the heating temperature can be, for example, 80°C or more and 150°C or less. The heating time is not particularly limited as long as the foam 34p and the resin film 33p can be adhered. The heating time is, for example, 5 minutes or more and 120 minutes or less. Thus, the second laminate 50 is obtained. The second laminate 50 is cut into a predetermined size and formed into a shape that is long in one direction as needed. The width dimension W of the second laminate 50 (foam layer 34) can be, for example, 3 mm or more and 20 mm or less.

[0035] The attachment of the second laminate 50 to the shaft 31 can be performed, for example, in the following procedure (see Fig. 4). First, with respect to the axial direction of the shaft 31, the longitudinal direction of the second laminate 50 is held at a predetermined angle, and one end portion of the second laminate 50 is attached to one end portion of the shaft 31. The predetermined angle is, for example, 15° or more and 46° or less. The shaft 31 is rotated, and the second laminate 50 is fed out in accordance with the rotation speed of the shaft 31, and the second laminate 50 is spirally attached from one end portion side at a predetermined pitch P. Thus, the production of the cleaning roll 30 is completed.

[0036] 3. Actions and Effects of this Embodiment Since the cleaning roll 30 of the present embodiment has the resin film layer 33, it is possible to suppress the exudation of the adhesive as compared with the configuration that does not have the resin film layer 33. As a result, for example, it is possible to contribute to reducing the diameter of the cleaning roll 30. Further, for example, even if the density of the foam layer 34 is reduced, it is possible to realize the cleaning roll 30 in which the adhesive hardly oozes out. Furthermore, by adopting the resin film layer 33 of the thermoplastic resin as the layer for suppressing the exudation of the adhesive, it is easy to secure the bonding strength between the resin film layer 33 and the other layers, and the durability of the cleaning roll 30 can be suitably ensured.

Example

[0037] Hereinafter, the present disclosure will be specifically described by way of examples. Experimental Example 1 and Experimental Example 2 are examples, and Experimental Example 3 and Experimental Example 4 are comparative examples.

[0038] 1. Production of cleaning roll Sheet-like foams A and B were prepared. Foam A was used in Experimental Example 1 and Experimental Example 3. Foam B was used in Experimental Example 2 and Experimental Example 4. The details of the foams are as follows. Foam A: Closed-cell foam, polyether-based polyurethane foam, density 70 kg / m 3 Foam B: Closed-cell foam, polyether-based polyurethane foam, density 35 kg / m 3

[0039] A resin film and an adhesive tape were prepared. The details of the resin film and the adhesive tape are as follows. Resin film: A film containing 10% by mass of ethylene-vinyl acetate copolymer (EVA) and 90% by mass of polyethylene (PE), melting temperature 110°C, thickness 50 μm Adhesive tape: A double-sided tape containing an acrylic adhesive, thickness 160 μm

[0040] Experimental Example 1 was prepared as follows. An adhesive tape was attached to a resin film to obtain a first laminate. A sheet-like foam A with a thickness of 1 mm was cut out from a block-shaped foam A. The cut-out foam A and the resin film of the first laminate were brought into contact over substantially the entire surface and heated at 120 °C for 30 minutes to obtain a second laminate. The second laminate was cut into strips with a width dimension of 7 mm.

[0041] An iron shaft with a diameter of 4 mm and electroless nickel plating was prepared. The release paper of the strip-shaped second laminate 50 was peeled off and spirally attached to the shaft at a winding angle of 26°. Thus, the cleaning roll of Experimental Example 1 was obtained.

[0042] In Experimental Example 2, instead of foam A (density 70 kg / m 3 ), foam B (density 35 kg / m 3 ) was used, and a sheet-like foam B with a thickness of 3.4 mm was cut out. Otherwise, in the same manner as Experimental Example 1, the cleaning roll of Experimental Example 2 was obtained.

[0043] Experimental Example 3 is an example without a resin film layer. In Experimental Example 3, foam A was cut out in the same manner as Experimental Example 1. A laminate obtained by directly attaching an adhesive tape to the cut-out foam A was attached to the shaft in the same manner as Experimental Example 1. Otherwise, in the same manner as Experimental Example 1, the cleaning roll of Experimental Example 3 was obtained.

[0044] Experimental Example 4 is an example without a resin film layer. In Experimental Example 3, foam B was cut out in the same manner as Experimental Example 1. A laminate obtained by directly attaching an adhesive tape to the cut-out foam B was attached to the shaft in the same manner as Experimental Example 1. Otherwise, in the same manner as Experimental Example 1, the cleaning roll of Experimental Example 4 was obtained.

[0045] The configurations of the cleaning rolls of Experimental Examples 1 - 4 are summarized and described in Table 1. In the column of "Presence or absence of resin film layer" in Table 1, the case with a resin film layer is indicated as "Yes", and the case without a resin film layer is indicated as "No".

[0046]

Table 1

[0047] 2. Evaluation method For the cleaning rolls of Experimental Examples 1 - 4, the following adhesive transfer test was conducted. <Adhesive transfer test> A rubber roll made of epichlorohydrin rubber with a diameter of 30 mm was prepared. With a load of 500 gf applied to both ends of each cleaning roll of Experimental Examples 1 - 4, it was brought into contact with the rubber roll, and the rubber roll was rotated at a rotational speed of 100 rpm for 4 hours. After the rotation ended, the surface of the rubber roll was observed with a microscope to confirm the presence or absence of adhesive transfer.

[0048] The transfer of the adhesive to the rubber roll was evaluated according to the following criteria. A: Almost no transfer of the adhesive to the rubber roll was confirmed. B: A little transfer of the adhesive to the rubber roll was confirmed. C: A large amount of transfer of the adhesive to the rubber roll was confirmed.

[0049] For the cleaning rolls of Experimental Examples 1 and 2, a cross-section along the lamination direction was observed to confirm whether the protrusions due to the cell skeleton on the surface of the foam layer were buried in the resin film layer. When at least some of the protrusions were buried in the resin film layer, it was described as "satisfied" in the column of "Requirements for mechanical bonding between the resin film layer and the foam layer" in Table 1. Since Experimental Examples 3 and 4 do not have a resin film layer, this requirement was not confirmed and was described as "-".

[0050] 3. Results The evaluation results are also shown in Table 1. The cleaning rolls of Experimental Examples 1 and 2 have an adhesive layer, a resin film layer containing a thermoplastic resin, and a foam layer laminated in this order on the outer peripheral side of the shaft. In contrast, the cleaning rolls of Experimental Examples 3 and 4 do not have a resin film layer, and only an adhesive layer and a foam layer are laminated in this order on the outer peripheral side of the shaft.

[0051] In Experimental Example 1 and Experimental Example 2, the transfer of the adhesive to the rubber roll was suppressed more than that of the cleaning rolls in Experimental Example 3 and Experimental Example 4. Therefore, according to the configuration in which the adhesive layer, the resin film layer containing a thermoplastic resin, and the foam layer are laminated in this order on the outer peripheral side of the shaft, it was suggested that the leaching of the adhesive can be suppressed.

[0052] Further, in the cleaning rolls of Experimental Example 1 and Experimental Example 2, at least a part of the protrusions due to the cell skeleton on the surface of the foam layer was buried in the resin film layer. Since Experimental Example 1 and Experimental Example 2 did not cause peeling or the like between the foam layer and the resin film layer even after the adhesive transfer test, it was suggested that the bonding strength between the foam layer and the resin film layer can be ensured according to the above configuration.

[0053] According to the above embodiments, it was possible to provide a cleaning roll capable of suppressing the leaching of the adhesive from the foam layer.

[0054] The present disclosure is not limited to the embodiments described in detail above, and various modifications or changes are possible within the scope of the present disclosure.

Claims

1. A cleaning roll in which an adhesive layer, a resin film layer containing a thermoplastic resin, and a foamed layer are laminated in this order on the outer peripheral side of a shaft.

2. The foamed layer is composed of an open-cell foam having an open-cell structure, The cleaning roll according to claim 1, wherein at least a part of the protrusions due to the cell skeleton on the surface of the foamed layer is embedded in the resin film layer.

3. The cleaning roll according to claim 1 or claim 2, wherein the foamed layer is arranged spirally on the outer peripheral side of the shaft.

4. The cleaning roll according to claim 1 or claim 2, wherein the resin film layer contains one or more resins selected from the group consisting of EVA and polyethylene.

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