KR20140109803A - Refill roll and the method for the same and roll cleaner with the refill roll - Google Patents

Abstract

The present application provides a refill roll which includes a foreign material removal part which comprises a cylindrical base and polyurethane which surrounds the outer side of the base and has adhesion, and touches a foreign material to collect the foreign material. The polyurethane is formed by the polymerization of a hardener including isocyanate compound and a main material including polyol having at least two hydroxyl radicals per molecular. The content of the polyol in the main material is 75 wt% to 95 wt%. The content of isocyanate compound in the hardener is 30 wt% to 60 wt%.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a refill roll and a refill roll,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a refill roll for removing various pollutants and a roll cleaner equipped with the refill roll. More specifically, the present invention relates to a method of manufacturing a refill roll and a refill roll which are made of a polyurethane material and can be repeatedly used, Roll cleaner.

In the case of fabrics such as clothes and carpets, a large amount of contaminants may stick to the surface due to static electricity.

As such, in order to remove various contaminants attached to clothes or carpets, a paper tape cleaner, which is usually rolled up in a home or office, is used. In this case, the adhesive side of the paper tape cleaner So that the dust is removed.

Such a paper tape cleaner is wound in a plurality of layers, and the surface to which the contaminants are adhered along the perforated line formed in the transverse direction can be cut off and peeled off.

In addition, since the peeled cut surface can not be reused and must be disposed, there is a problem that waste is generated.

In addition, when the paper tape cleaner with the contaminants adhered to the paper tape is peeled off, the paper tape cleaner is not easily peeled off or many pieces of paper tape are peeled at a time, resulting in inconvenience of use and loss of paper tape.

Accordingly, in recent years, a roll cleaner has been put on the market in which contaminants attached to the adhesive surface are rinsed with water and then water can be removed.

Such a conventional roll cleaner is formed by applying silicone or acrylic on a plastic mold.

However, such a conventional roll cleaner has a problem that adhesion of the contaminants is deteriorated because the adhesion of silicone or acrylic is significantly reduced when the roll cleaner is washed repeatedly with water because the thickness of the refill roll is thin,

In order to solve this problem, when the viscosity of the silicone is increased, the silicone oil seeps into the adhered surface (in particular, clothing or carpet) and damages the object.

Further, in the case of the plastic mold constituting the body of the conventional roll cleaner, there is an inconvenience that the cleaner must be in contact with the contaminants adhered to the curved adhered surface because it is not closely adhered to the curved bottom surface or bedding.

Korea public utility model 2001-0000676

Accordingly, the present invention has been made to solve the above problems of the prior art, and it is an object of the present invention to provide a refill roll, a refill roll manufacturing method, and a roll cleaner equipped therewith, which are made of a polyurethane material and maintain high adhesive force even during repeated reuse, I want to.

The method of manufacturing the refill roll and the refill roll according to the present application and the problems of the roll cleaner equipped with the refill roll and the refill roll are not limited to the above-mentioned problems, and other problems not mentioned are clearly understood by those skilled in the art from the following description .

According to an aspect of the present invention, there is provided a foreign substance removing unit comprising a cylindrical base and a polyurethane having an adhesive force to cover an outer side of the base and capable of collecting the foreign substance by contacting with a foreign substance, Wherein the polyol is formed by polymerization of a subject comprising a polyol having at least two hydroxy groups and a curing agent comprising an isocyanate compound, wherein the content of the polyol in the subject is not less than 75 wt% and not more than 95 wt% Wherein the content of the compound is not less than 30 weight percent and not more than 60 weight percent.

The isocyanate compound may include at least one of hexa-methylene-diisocyanate, methylene-diisocyanate, toluene-diisocyanate, and isoprene-diisocyanate.

The subject matter is a first polypropylene glycol having a molecular weight of from 2500 to 3500, two hydroxyl groups per molecule, and a content within the subject of from 13 weight percent to 40 weight percent; A second polypropylene glycol having a molecular weight of 2500 or more and 5500 or less, 3 hydroxy groups per molecule, and a content within the subject of 40 weight% or more and 77 weight% or less; A catalyst having a content in the subject of not less than 0.2 wt% and not more than 12 wt%; A chain extender having a content in the subject of 0.1 weight percent or more and 13 weight percent or less, and a plasticizer as a remainder.

Wherein the curing agent is a toluene diisocyanate having a content of the curing agent in the curing agent is 29 wt% or more and 49 wt% or less; Hexamethylene diisocyanate wherein the content of the curing agent is 32 weight% or more and 52 weight% or less; A third polypropylene glycol having a molecular weight of 2500 or more and 3500 or less and having 3 hydroxy groups per molecule and having a content of 5 wt% or more and 20 wt% or less in the curing agent, and a plasticizer as a remainder.

The base may be made of one of PVC, PP, LDPE, HDPE and PET.

The base may be printed with a logo or pattern, and the foreign matter removing unit may be made of a transparent material so that the logo or the pattern may be projected to the outside.

As the surface of the base is subjected to the primer coating treatment, the strength of the base and the foreign substance removing unit may be higher than the foreign substance removing unit may attach to the foreign substance.

According to another aspect of the present invention, there is provided an image forming apparatus including a refill roll, a pivoting roller rotatably installed inside the base, a grip portion extending from the pivoting roller to be gripped by a user, A refill roll, and a cover portion into which the rotating roller is inserted, and a groove portion is formed at an end of the cover portion where the opening is formed, so that the handle portion can be fitted into the groove portion.

The cover portion may have a cylindrical shape and a rectangular support portion may be provided outside the cover portion in a direction opposite to the groove portion.

A fixing protrusion for preventing a gap with the base may be formed at an end of the rotation roller.

According to another aspect of the present invention, there is provided a method of manufacturing a refill roll including a cylindrical base and a polyurethane surrounding the base surface, the method comprising: mixing a subject and a curing agent into a stirrer, stirring the subject and the curing agent, A stirring step of causing a subject to react with the curing agent; a feeding step of feeding polyurethane formed by the polymerization reaction between the subject and the curing agent into a mold mold provided with the base; heating the polyurethane inside the mold mold And a separating step of separating the polyurethane adhered to the base and the base surface from the mold mold.

The stirring step may further include a defoaming step of defoaming the polyurethane which has been stirred.

The refill roll and the refill roll manufacturing method of the present application and the roll cleaner equipped with the refill roll and refill roll have the following effects.

First, the refill roll according to the present application is made of a polyurethane material, and can have high elasticity and adhesion.

Second, the refill roll according to the present application can be washed in water and semi-permanently reused.

Third, the refill roll according to the present application is made of a printable base material, and can form a specific logo.

Fourthly, since the refill roll according to the present application has a high elastic force, it can be easily adhered to the curved adhered surface.

Fifth, the after-refill roll according to the present application does not leave after-images on the adhesive surface and does not cause deterioration on the adherend surface.

Sixth, the roll cleaner equipped with the refill roll according to the present application is easy to carry and can easily remove contaminants by using the handle having the slip prevention groove formed therein.

The effects of the present application are not limited to the effects mentioned above, and other effects not mentioned can be clearly understood by those skilled in the art from the description of the claims.

The foregoing summary, as well as the detailed description of the embodiments of the invention set forth below, may be better understood when read in conjunction with the appended drawings. Embodiments are shown in the figures for purposes of illustrating the present application. It should be understood, however, that this application is not limited to the precise arrangements and instrumentalities shown.
1 is a perspective view illustrating a refill roll according to an embodiment of the present invention.
2 is a perspective view illustrating a refill roll according to another embodiment of the present invention.
3 is a perspective view showing an embodiment of a roll cleaner equipped with a refill roll according to another embodiment of the present invention.
4 is a detailed view of a cover part of a roll cleaner according to an embodiment of the present invention.
5 is a view illustrating a roll cleaner according to another embodiment of the present invention.
6 is a view illustrating a method of manufacturing a refill roll according to an embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory and are intended to provide further explanation of the invention as claimed. It will be easy to know if you have the knowledge of.

In describing the embodiments of the present invention, components having the same function are denoted by the same names and symbols, and substantially the same as the conventional method of manufacturing the refill roll and the refill roll and the roll cleaner equipped therewith .

Furthermore, the terms used in the embodiments of the present invention are used only to describe specific embodiments, and are not intended to limit the present invention. The singular expressions include plural expressions unless the context clearly dictates otherwise. Furthermore, in the embodiments of the present invention, terms such as "comprises" or "having ", etc. are intended to specify the presence of stated features, integers, steps, operations, elements, parts, or combinations thereof, Steps, operations, elements, components, or combinations of elements, numbers, steps, operations, components, parts, or combinations thereof.

It will be understood by those skilled in the art that various changes and modifications may be made without departing from the scope of the present invention as defined by the appended claims, It is obvious.

1 is a perspective view illustrating a refill roll 100 according to an embodiment of the present invention.

1, a refill roll 100 according to an embodiment of the present invention includes a base 110, a foreign matter removing unit 130, and a degassing unit 140. As shown in FIG.

The base 110 may be made of any one of PVC, PP, LDPE, HDPE, and PET.

The base 110 may be formed in a cylindrical shape, or may be wound in a cylindrical shape in a planar tube.

Accordingly, when the refill roll 100 is rolled, the foreign matter removing unit 130 surrounding the outside of the base 110 can be continuously contacted with the foreign material while rolling together with the base 110.

Meanwhile, as the surface of the base 110 is subjected to the primer coating treatment, the bonding strength with the foreign substance removing unit 130 surrounding the base 110 is increased, so that the foreign substance removing unit 130 attached to the foreign substance can be easily removed.

At this time, the primer may include silicon, urethane, acryl, and the like.

Accordingly, even when the user removes the foreign substance removing unit 130 by applying an external force greater than the adhesive force of the foreign substance removing unit 130 that contacts the foreign substance, the foreign substance removing unit 130 is disconnected or stretched .

As described above, the foreign material removing unit 130 surrounds the outside of the base 110 and can directly contact the object to be cleaned to collect foreign matter.

The material of the foreign material removing unit 130 may be polyurethane (P) having a high viscosity and elasticity.

Meanwhile, the polyurethane (P) of the foreign matter removing unit 130 according to an embodiment of the present invention may include a polyolefin having at least two hydroxyl groups per molecule and containing a polyol that affects the viscosity of the refill roll 100 131) and an isocyanate compound, and the curing agent 133 affects the elasticity of the refill roll 100.

At this time, the content of the polyol in the subject 131 is not less than 75% by weight and not more than 95% by weight, and the content of the isocyanate compound in the curing agent 133 may be controlled within a range of 30% by weight or more and 60% by weight or less.

If the content of the polyol is 75 weight percent or more, the viscosity of the polyurethane (P) can be increased. Therefore, the foreign material removing unit 130 made of the polyurethane (P) Can be used to collect from the garment surface.

Further, even if the adhesive force is lost due to the sticking of dust to the polyurethane (P) due to prolonged use, if the polyurethane (P) is washed with a neutral detergent or water, all the dust adhered to the polyurethane (P) The foreign substance removing unit 130 can be repeatedly used.

Therefore, the refill roll 100 according to the embodiment of the present invention is advantageous in terms of environmental protection because it does not produce any additional waste.

When the content of the polyol is less than 95 weight percent, the polyurethane (P) adheres to the adherend surface to cause contamination or to remove the polyol (P), thereby damaging the floor or clothing surface Can be prevented.

In addition, since it is not necessary to apply a large external force to remove the polyurethane (P) from the floor or the surface of the clothes, it is possible to prevent the elongation rate of the foreign material removing unit 130 from being increased.

Such a polyol may comprise at least one of an ether polyol and an ester polyol, wherein the ether polyol is etherified with propylene glycol.

Hereinafter, embodiments for implementing a subject 131 including a polyol according to an embodiment of the present invention will be described in detail. The following examples illustrate the invention and are not intended to limit the scope of the invention.

[Example 1]

The polyol constituting the subject 131 according to an embodiment of the present invention can be used in combination with two or more polyols and has a molecular weight of 2500 or more and 3500 or less and has 2 hydroxy groups per molecule, A first polypropylene glycol having a content of not less than 13% by weight and not more than 40% by weight and a second polypropylene glycol having a molecular weight of not less than 2500 and not more than 5500 and having three hydroxy groups per one molecule and having a content of not less than 40% by weight and not more than 77% A second polypropylene glycol can be used.

The polyurethane (P) can be produced by adding a catalyst, a chain extender and a plasticizer as additives to a polyol containing a first polypropylene glycol and a second polypropylene glycol.

The catalyst may be a variety of catalysts commonly known to those skilled in the art for promoting the reaction of the compound 131 in the subject 131. In order to minimize the side reaction, the content of the subject 131 may be 0.2 weight% or more and 12 weight% or less .

The chain extender has a functional group capable of reacting with an isocyanate group, which will be described later, and a variety of extender extruders generally known to those skilled in the art can be used. In order to increase the cohesion of the polyurethane (P) Or more and 13 weight percent or less.

Then, the plasticizer may be mixed as the remaining amount.

[Example 2]

The polyol constituting the subject 131 according to another embodiment of the present invention can be used in combination with two or more polyols and has a molecular weight of 1,500 to 2,500 and a content in the subject 131 of 30 to 50% A polyester polyol and a polyol having a molecular weight of 3500 or more and 5500 or less and having 3 hydroxy groups per molecule and having a content in the subject 131 of 25 wt% or more and 45 wt% or less can be used.

The subject 131 can be produced by adding a catalyst, a chain extender and a plasticizer as additives to the polyester polyol and the polyol.

The catalyst may be a variety of catalysts commonly known to those skilled in the art for promoting the reaction of the compound 131 in the subject 131. In order to minimize the side reaction, the content of the subject 131 may be 0.2 weight% or more and 12 weight% or less .

The chain extender has a functional group capable of reacting with an isocyanate group, which will be described later, and various diuretics generally known to those skilled in the art can be used. In order to increase the cohesion of the polyurethane (P) Or more and 1.5 weight percent or less.

Then, the plasticizer may be mixed as the remaining amount.

On the other hand, when the content of the isocyanate compound is 30 weight percent or more, since the elasticity of the polyurethane (P) can be enhanced, the foreign matter removing unit 130 (130), which is pressed by the adhered surface such as dust, hair, ) Is easily restored to its original shape, and plastic deformation does not occur along the direction of the external force.

When the content of the isocyanate compound is less than 60 percent by weight, the polyurethane (P) is not rigid and has a good cushioning feel, so that the foreign substance removing unit 130 is contacted with a foreign substance adhered to a curved bottom surface, The foreign matter can be collected without inconvenience.

These isocyanate compounds may include at least one of hexa-methylene-diisocyanate, methylene-diisocyanate, toluene-diisocyanate, and isoprene-diisocyanate.

Hereinafter, embodiments for implementing a curing agent 133 containing an isocyanate compound according to an embodiment of the present invention will be described in detail. The following examples illustrate the invention and are not intended to limit the scope of the invention.

[Example 1-1]

The isocyanate constituting the curing agent 133 to be mixed with the subject 131 according to the above-described Example 1 can be used in combination with two or more isocyanate compounds and can be used in combination with a toluene die having a content of the curing agent 133 in the range of 29 to 49% Hexamethylene diisocyanate having a content of isocyanate and the content of the curing agent (133) in the range of 32 weight% to 52 weight% can be used.

The isocyanate compound containing toluene diisocyanate and hexamethylene diisocyanate has a molecular weight of not less than 2500 and not more than 3500, 3 hydroxy groups per molecule, and a content of the curing agent (133) of 5 weight% or more and 20 weight% The curing agent 133 can be prepared by adding a plasticizer as the polypropylene glycol and the remaining amount.

[Example 2-1]

As the isocyanate compound constituting the curing agent 133 mixed with the subject 131 according to the above-described Embodiment 2, toluene diisocyanate can be used alone.

Accordingly, the polyurethane (P) used as the foreign matter removing unit 130 according to an embodiment of the present invention is produced by mixing the main subject 131 and the curing agent 133 and performing polymerization reaction, And has an excellent elasticity such that the pressed volume can be restored to its original shape due to abutment with the object to be cleaned while having an adhesive strength to such an extent that it does not cause damage to the object to be cleaned and an abundant viscosity that can be repeatedly used even by washing with a neutral detergent or water .

On the other hand, the user can control the viscosity and elasticity of the foreign material removing unit 130 by adjusting the blending ratio or the molecular weight of the subject 131 and the hardening agent 133 or adjusting the addition amount.

For example, in order to remove dirt and contaminants adhering to the futon, a foreign matter removing unit 130 having a strong viscosity is required. Accordingly, the user can manufacture the polyurethane (P) according to the embodiment of manufacturing the foreign matter removing unit 130 having a strong viscosity.

On the other hand, in order to remove dust or contaminants adhering to clothes, a foreign substance removing unit 130 having a weaker viscosity than that used for a floor or a futon is required. Therefore, the user can manufacture the polyurethane (P) according to the embodiment of manufacturing the foreign matter removing unit 130 having such viscosity.

That is, the user can manufacture polyurethane (P) having various viscosities and selectively use the polyurethane (P) for the foreign substance removing unit 130.

On the other hand, the foreign material removing unit 130 is formed to have a thickness of at least 1 mm to prevent the polyurethane P from being easily broken due to the tensile force from the user and to be easily adhered to the bottom surface with bending, Can provide a sense of cushioning.

The separator 140 is used to prevent impurities from adhering to the viscous foreign matter removing unit 130 before using the refill roll 100, and may be used after being peeled off when the refill roll 100 is used.

The surface of the degreasing agent 140 may be coated so as to be easily peeled off from the viscous foreign matter removing agent 130.

2 is a perspective view illustrating a refill roll 100 according to another embodiment of the present invention.

The refill roll 100 according to another embodiment of the present invention includes a base 115, a foreign matter removing unit 130, and a degassing unit 140.

The foreign matter removing unit 130 and the separating unit 140 of the refill roll 100 according to the present embodiment are the same as the foreign substance removing unit 130 and the separating unit 140 of the embodiment described above, The same names and reference numerals will be used.

As shown in FIG. 2, the base 115 according to another embodiment of the present invention may be printed with a logo or a pattern. At this time, the foreign substance removing unit 130 may remove the logo or the pattern And may be made of a transparent material.

This makes it possible to feel a sense of aesthetics by printing various patterns, colors, patterns, and the like on the base 115, and to transmit the image of the refill roll 100 to the consumer with a strong impression, thereby enhancing the value of the product, To be able to remain.

The method of increasing the aesthetics of the refill roll 100 is not limited to the one described above. The method of attaching stickers with various logos on the base 115 and wrapping the foreign material removing unit 130 made of transparent material The feel of the refill roll 100 can be enhanced.

The foreign substance removing unit 130 and the foreign matter removing unit 140 are the same as the foreign substance removing unit 130 and the removing unit 140 of the refill roll 100 according to the embodiment of the present invention. do

3 to 4 are views showing a roll cleaner 200 equipped with a refill roll 100 according to another embodiment of the present invention.

3 is a perspective view illustrating one embodiment of a roll cleaner 200 equipped with a refill roll 100 according to another embodiment of the present invention.

3, the roll cleaner 200 according to an embodiment of the present invention includes a pivoting roller 210, a handle 230, and a cover 250. As shown in FIG.

The pivoting roller 210 may be rotatably inserted into the base 115 of the refill roll 100 so as to rotate about the central axis of the cylinder of the refill roll 100.

The outer diameter r1 of the pivoting roller 210 is the same as the inner diameter r2 of the base 115 and the gap between the pivoting roller 210 and the base 115 is prevented A fixing protrusion 211 may be formed.

The grip portion 230 may include a shaft portion 231 and a grip portion 233.

One end of the shaft portion 231 may be rotatable inside the rotation roller 210 and a grip portion 233 may be provided at the other end of the shaft portion 231.

At this time, the middle portion of the shaft portion 231 is bent to facilitate rolling the roll cleaner 200, so that the other end of the shaft portion 231 can be positioned in a direction perpendicular to the refill roll 100.

A plurality of non-slidable protrusions 233a may be formed on one side of the grip portion 233 to facilitate gripping by the user.

Accordingly, the user can hold the non-slip protrusion 233a with a slight gap between the fingers, and the non-slip protrusion 233a maximizes the contact area of the user with the grip 233, thereby preventing slippage.

Accordingly, the user can pick up foreign matter through the refill roll 100 inserted with the pivoting roller 210 by rolling the pivoting roller 210 by holding the handle 230.

4 is a view illustrating a state in which a rotation roller 210 and a refill roll 100 in which the rotation roller 210 is inserted are stored in a cover part 250 of a roll cleaner 200 according to an embodiment of the present invention to be.

The cover part 250 has an opening at one side and the refill roll 100 having the rotation roller 210 and the rotation roller 210 inserted through the opening can be inserted into the cover part 250.

The cover 250 may have a circular shape corresponding to the refill roll 100, but may have various shapes.

Accordingly, the viscous refill roll 100 can be shielded from foreign matter by the cover portion 250.

A groove portion 251 is provided at the end of the cover portion 250 so that the shaft portion 231 of the handle 230 can be engaged with the groove portion 251. A rectangular shape is formed outside the cover portion 250 in a direction opposite to the groove portion 251. [ The roll cleaner 200 according to an embodiment of the present invention can be stably mounted on a floor surface and stored.

5 is a view illustrating a roll cleaner 200 according to another embodiment of the present invention.

The roll cleaner 200 according to another embodiment of the present invention includes a rotating roller 210, a handle portion 235 and a cover portion 250.

The rotating roller 210 and the cover 250 of the roll cleaner 200 according to the present embodiment are the same as the rotating roller 210 and the cover 250 of the above- And reference numerals will be used.

5, the handle 235 may include a shaft portion 232 and a grip portion 234 according to another embodiment of the present invention.

At this time, the shaft portion 232 may be provided so that one end thereof is rotatable inside the rotation roller 210, and the grip portion 234 may be provided at the other end of the shaft portion 232.

At this time, the middle portion of the shaft portion 232 may be formed in a straight shape without being folded in the middle portion like the shaft portion 231 of the roll cleaner 200 according to an embodiment of the present invention.

Meanwhile, the grip portion 234 is the same as the grip portion 233 of the roll cleaner 200 according to an embodiment of the present invention, and thus a detailed description thereof will be omitted.

The user rotates the rotating roller 210 by holding the handle 235 including the shaft portion 232 and the grip portion 234 and rotates the rotating roller 210 to move the foreign material through the refill roll 100 in which the rotating roller 210 is inserted Can be collected.

The modified embodiment of this shaft portion 232 is not limited to that described above, and the rotation roller 210 may be inserted into the refill roll 100 in combination with the shaft portions 232 of various shapes.

Next, a method of manufacturing the refill roll 100 according to the embodiment of the present invention will be described.

6 is a view illustrating a method of manufacturing the refill roll 100 according to an embodiment of the present invention.

6, a method of manufacturing a refill roll 100 including a cylindrical base 115 and a polyurethane (P) wrapping the surface of the base 115 according to an embodiment of the present invention includes a stirring step, A charging step, a heating step and a separating step.

The user may mix the subject 131 stored in the subject tank 151 and the curing agent 133 stored in the hardener tank 153 into the agitator 160 in the stirring step.

At this time, the subject 131 and the curing agent 133 may be the composition prepared through the above-described Example 1 or Example 2. [

The motions of the agitator 160 and the agitator 163 may be controlled by stirring the agitator 163 with the motors 161. The motors 161 may be agitated by the stirrer rods 163, (131) and the curing agent (133) are mixed uniformly, the polymerization reaction can be caused.

Since the agitated polyurethane (P) contains a lot of bubbles, it can lower the aesthetics. Therefore, the bubbling step that completely removes the bubbles generated in the stirring step can be further roughed.

The polyurethane (P) formed by the polymerization reaction of the subject 131 and the curing agent 133 may then be introduced into the mold mold 155 in the charging step.

The cylindrical base 115 may be provided in the mold mold 155 before the polyurethane P is injected into the mold mold 155 so that the polyurethane P is injected into the mold mold 155, And can be introduced into the space outside the base 115 provided inside.

The polyurethane (P) injected into the mold mold 155 can be cured by heating to a temperature of 30 to 70 ° C.

Upon completion of curing of the polyurethane (P), the polyurethane (P) adhered to the surfaces of the base 110 and the base 115 from the mold mold 155 is demolded from the mold template 155, The refill roll 100 according to the example can be manufactured.

Therefore, the method of manufacturing the refill roll and the refill roll according to various embodiments of the present invention and the roll cleaner 200 equipped with the refill roll and the refill roll according to various embodiments of the present invention are made of polyurethane (P) material and can have high elastic force and adhesive force, It can be washed and semi-permanently reused.

It will be understood by those skilled in the art that various changes and modifications may be made without departing from the scope of the present invention as defined by the appended claims, It is obvious.

P: Polyurethane
100: refill roll
110, 115:
130: Foreign body removal
131: Topics
133: Hardener
155: Mold mold
160: stirrer
200: Roll Cleaner
210: rotating roller
230, 235:
231, 232:
233, 234:
250: Cover part

Claims (12)

A cylindrical base; And
And a foreign matter removing unit which is made of polyurethane having an adhesive force to cover the outside of the base and is capable of contacting the foreign matter and collecting the foreign matter,
The polyurethane is formed by polymerization of a curing agent comprising an isocyanate compound and a subject comprising a polyol having at least two hydroxy groups per molecule,
Wherein the content of the polyol in the subject is not less than 75 wt% and not more than 95 wt%, and the content of the isocyanate compound in the curing agent is not less than 30 wt% and not more than 60 wt%. The method according to claim 1,
Wherein the isocyanate compound comprises at least one of hexa-methylene-diisocyanate, methylene-diisocyanate, toluene-diisocyanate, and isoprene-diisocyanate. The method according to claim 1,
The subject
A first polypropylene glycol having a molecular weight of 2500 or more and 3500 or less and having two hydroxy groups per molecule and having a content in the subject of 13 weight% or more and 40 weight% or less; A second polypropylene glycol having a molecular weight of 2500 or more and 5500 or less, 3 hydroxy groups per molecule, and a content within the subject of 40 weight% or more and 77 weight% or less; A catalyst having a content in the subject of not less than 0.2 wt% and not more than 12 wt%; And a plasticizer as a remainder and a chain extender having a content in the subject of 0.1 wt% or more and 13 wt% or less. The method according to claim 1,
The curing agent
Toluene diisocyanate having a content of the curing agent in a range of 29 to 49 percent by weight; Hexamethylene diisocyanate wherein the content of the curing agent is 32 weight% or more and 52 weight% or less; A third polypropylene glycol having a molecular weight of 2500 or more and 3500 or less and having 3 hydroxyl groups per molecule and having a content of 5 wt% or more and 20 wt% or less in the curing agent, and a plasticizer as a remainder. The method according to claim 1,
Wherein the base is made of one of PVC, PP, LDPE, HDPE and PET. The method according to claim 1,
Wherein the base is printed with a logo or pattern, and the foreign substance removing unit is made of a transparent material, and the logo or the pattern is projected to the outside. The method according to claim 1,
Wherein the surface of the base is subjected to a primer coating treatment so that the strength with which the base and the foreign matter removing unit are combined is higher than the strength of the foreign matter removing unit with respect to the foreign matter. A refill roll comprising at least one of the claims 1 to 7;
A rotating roller rotatably installed inside the base;
A grip portion extending from the rotation roller and capable of being gripped by a user; And
And a cover portion in which an opening is formed in one side and the refill roll and the rotation roller are inserted through the opening,
Wherein a groove portion is formed at an end of the cover portion where the opening is formed, so that the handle portion can be fitted into the groove portion. 9. The method of claim 8,
Wherein the cover portion is formed in a cylindrical shape and a rectangular support portion is provided outside the cover portion in a direction opposite to the groove portion. 9. The method of claim 8,
And a fixing protrusion for preventing a gap with the base is formed at an end of the rotation roller. A method of manufacturing a refill roll including a cylindrical base and a polyurethane surrounding the base surface,
Stirring the subject and the curing agent into a stirrer, stirring the subject and the curing agent to cause polymerization reaction of the subject and the curing agent;
An injection step of injecting the polyurethane formed by the polymerization reaction of the above-mentioned subject and the curing agent into a mold mold having the base;
A heating step of heating the polyurethane inside the mold mold; And
And separating the polyurethane adhered to the base and the base surface from the mold mold. 12. The method of claim 11,
The stirring step
Further comprising a defoaming step of defoaming the polyurethane after the stirring is completed.

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