Oil absorbent material and method for producing an oil absorbent material

Abstract

To provide an oil adsorbent body that can be manufactured in a short time with reduced costs and a manufacturing method of an oil adsorbent body.SOLUTION: A manufacturing method of an oil adsorbent body includes pulverization of, at least, a defective paper added with a wet strength agent and a size agent and not needing addition of new wax, a used paper added with a wet strength agent and a size agent and not needing addition of new wax, or a paper to be wasted added with a wet strength agent and a size agent and not needing addition of new wax.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to an oil adsorbent and a method for manufacturing the same, and particularly to an oil adsorbent that can be manufactured in a short time and at a low cost, and a method for manufacturing the same.

Background Art

[0002] The applicant of this application previously disclosed an oil adsorbent (see Patent Document 1). This oil adsorbent is obtained by immersing waste cardboard in molten wax in a tank, then taking out the waste cardboard from the tank, cooling it, and coating wax over the entire outer surface of the waste cardboard, and then pulverizing the coated waste cardboard into fibers to manufacture the oil adsorbent.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, in the above oil adsorbent, the waste cardboard has to be immersed in the molten wax in the tank, then taken out from the tank and cooled, and then wax has to be coated over the entire outer surface of the waste cardboard, which is a problem that requires a lot of labor and time.

[0005] The present invention aims to provide an oil adsorbent and a method for manufacturing the same that take the above problems into consideration.

Means for Solving the Problems

[0006] The method for producing the oil adsorbent described in claim 1 involves crushing defective paper to which a wet strength enhancer and sizing agent that do not require the addition of new wax have been added, or used paper to which a wet strength enhancer and sizing agent that do not require the addition of new wax have been added, or waste paper to which a wet strength enhancer and sizing agent that do not require the addition of new wax have been added.

[0007] Furthermore, the method for producing the oil adsorbent described in claim 2 involves crushing at least defective unbleached kraft paper to which a paper strength enhancer and sizing agent that do not require the addition of new wax have been added, or used unbleached kraft paper to which a paper strength enhancer and sizing agent that do not require the addition of new wax have been added, or unbleached kraft paper for disposal to which a paper strength enhancer and sizing agent that do not require the addition of new wax have been added.

[0008] Furthermore, the method for producing an oil adsorbent according to claim 3 does not require the addition of any new wax. A wet strength enhancer and a sizing agent have been added. Defective product paper , or there is no need to add new wax. A wet strength enhancer and a sizing agent have been added. Used paper , or there is no need to add new wax. A wet strength enhancer and a sizing agent have been added. It is made from shredded waste paper. the law of nature , The aforementioned paper is the packaging material used in beer cartons (Multipack Cluster-Pak®). ru.

[0009] Furthermore, the oil adsorbent described in claim 4 is made by crushing at least defective paper to which a wet strength enhancer and sizing agent that do not require the addition of new wax have been added, or used paper to which a wet strength enhancer and sizing agent that do not require the addition of new wax have been added, or waste paper to which a wet strength enhancer and sizing agent that do not require the addition of new wax have been added.

[0010] Furthermore, the oil adsorbent described in claim 5 is made by crushing at least defective unbleached kraft paper to which a paper strength enhancer and sizing agent that do not require the addition of new wax have been added, or used unbleached kraft paper to which a paper strength enhancer and sizing agent that do not require the addition of new wax have been added, or unbleached kraft paper for disposal to which a paper strength enhancer and sizing agent that do not require the addition of new wax have been added.

[0011] Furthermore, the method for producing an oil adsorbent according to claim 6 does not require the addition of any new wax. Unbleached kraft paper of defects with added paper strength enhancers and sizing agents. , or there is no need to add new wax. Used, unbleached kraft paper with added paper strength enhancers and sizing agents. , or there is no need to add new wax. Unbleached kraft paper for disposal, with paper strength enhancers and sizing agents added. It is made by crushing The aforementioned unbleached kraft paper is used for rice and wheat bags or cement bags. ru. [Effects of the Invention]

[0012] According to the method for manufacturing an oil adsorbent described in claim 1, at least defective paper to which a wet strength enhancer and a sizing agent have been added, or used paper to which a wet strength enhancer and a sizing agent have been added, or waste paper to which a wet strength enhancer and a sizing agent have been added, is crushed. In other words, the added wet strength enhancer maintains the strength of the crushed fibers even after the paper is crushed, and the added sizing agent maintains the water-repellent ability of the crushed fibers even after the paper is crushed. Therefore, since there is no need to add new wax or the like during the manufacturing process, the oil adsorbent can be manufactured in a short time, with reduced costs and resources. When the oil adsorbent is added to a mixture of water and oil, it hardly absorbs any water, and the oil can be preferentially adsorbed into the gaps between the fibers of the oil adsorbent formed by crushing "paper to which a wet strength enhancer and a sizing agent have been added". Furthermore, the oil adsorbent of the present invention has stronger fibers and wider gaps between the fibers compared to the corrugated cardboard fibers that make up conventional oil adsorbents, thus improving its oil adsorption capacity.

[0013] Furthermore, according to the method for producing an oil adsorbent described in claim 2, at least a paper strength enhancer and a Unbleached kraft paper of defects with added sizing agents, or paper strength enhancers and sizing agents. Used unbleached kraft paper, or waste paper to which a paper strength enhancer and a sizing agent have been added raft paper, after pulverization, maintains the strength of the pulverized fibers, and the added sizing agent maintains the water repellency of the pulverized fibers even after pulverizing the unbleached kraft paper. Therefore, since there is no need to add new wax or the like during the manufacturing process, the oil adsorbent can be manufactured with reduced cost and resources in a short time. If the oil adsorbent is put into a mixture of water and oil, almost no water is absorbed, and the oil can preferentially adsorb into the gaps between the fibers of the oil adsorbent formed by pulverizing "unbleached kraft paper to which a paper strength enhancer and a sizing agent have been added". Also, since the oil adsorbent of the present invention uses unbleached kraft paper which originally has strong fibers, compared to the corrugated fiber constituting the conventional oil adsorbent, the fibers are stronger and the gaps formed between the fibers are wider, so the oil adsorption ability is improved. oil adsorbent formed by pulverizing "unbleached kraft paper to which a paper strength enhancer and a sizing agent have been added". between the fibers of the oil adsorbent formed by pulverizing "unbleached kraft paper to which a paper strength enhancer and a sizing agent have been added". Also, since the oil adsorbent of the present invention uses unbleached kraft paper which originally has strong fibers, compared to the corrugated fiber constituting the conventional oil adsorbent, the fibers are stronger and the gaps formed between the fibers are wider, so the oil adsorption ability is improved. Furthermore, according to the oil adsorbent described in claim 4, at least defective paper to which a wet paper strength enhancer and a sizing agent have been added, or used paper to which a wet paper strength enhancer and a sizing agent have been added, or waste paper to which a wet paper strength enhancer and a sizing agent have been added is pulverized. That is, the added wet paper strength enhancer maintains the strength of the pulverized fibers even after pulverizing the paper, and the added sizing agent maintains the water repellency of the pulverized fibers even after pulverizing the paper. Therefore, since there is no need to add new wax or the like during the manufacturing process, the oil adsorbent can be manufactured with reduced cost and resources in a short time. If the oil adsorbent is put into a mixture of water and oil, almost no water is absorbed, and the oil can preferentially adsorb into the gaps between the fibers of the oil adsorbent formed by pulverizing "paper to which a wet paper strength enhancer and a sizing agent have been added". Also, since the oil adsorbent of the present invention has stronger fibers and wider gaps between the fibers compared to the corrugated fiber constituting the conventional oil adsorbent, the oil adsorption ability is improved.

[0015] Furthermore, according to the oil adsorbent described in claim 4, at least defective paper to which a wet paper strength enhancer and a sizing agent have been added, or used paper to which a wet paper strength enhancer and a sizing agent have been added, or waste paper to which a wet paper strength enhancer and a sizing agent have been added is pulverized. That is, the added wet paper strength enhancer maintains the strength of the pulverized fibers even after pulverizing the paper, and the added sizing agent maintains the water repellency of the pulverized fibers even after pulverizing the paper. Therefore, since there is no need to add new wax or the like during the manufacturing process, the oil adsorbent can be manufactured with reduced cost and resources in a short time. If the oil adsorbent is put into a mixture of water and oil, almost no water is absorbed, and the oil can preferentially adsorb into the gaps between the fibers of the oil adsorbent formed by pulverizing "paper to which a wet paper strength enhancer and a sizing agent have been added". Also, since the oil adsorbent of the present invention has stronger fibers and wider gaps between the fibers compared to the corrugated fiber constituting the conventional oil adsorbent, the oil adsorption ability is improved.

[0016] ​ Moreover, according to the oil adsorbent of claim 5, at least, it is obtained by pulverizing defective unsized kraft paper to which a paper strength enhancer and a sizing agent are added, or used unsized kraft paper to which a paper strength enhancer and a sizing agent are added, or waste unsized kraft paper to which a paper strength enhancer and a sizing agent are added. That is, the added paper strength enhancer maintains the strength of the pulverized fibers even after pulverizing the unsized kraft paper, and the added sizing agent maintains the water repellency of the pulverized fibers even after pulverizing the unsized kraft paper. Therefore, since there is no need to add new wax or the like during the manufacturing process, the oil adsorbent can be manufactured with reduced cost and resources in a short time. When the oil adsorbent is put into a mixture of water and oil, almost no water is absorbed, and the oil can preferentially adsorb into the gaps between the fibers of the oil adsorbent formed by pulverizing "unsized kraft paper to which a paper strength enhancer and a sizing agent are added". In addition, the oil adsorbent of the present invention has stronger fibers and wider gaps between the fibers compared to the fibers of the cardboard constituting the conventional oil adsorbent, so the oil adsorption ability is improved.

Brief Description of the Drawings

[0018] [Figure 1] FIG. 1 is a photograph of the oil adsorbent of an embodiment of the present invention.

Embodiments for Carrying Out the Invention

[0019] The oil adsorbent and the method for manufacturing the oil adsorbent of an embodiment of the present invention will be described.

[0020] (Example 1) When pulverizing defective cardboard, used cardboard, or waste cardboard The oil adsorbent (the method for manufacturing the oil adsorbent) is at least obtained by pulverizing defective cardboard (for example, cardboard that cannot be commercialized due to printing errors, cardboard that cannot be commercialized due to dirt, etc.) (for example, pulverized into fibers). The pulverization is performed, for example, with an opener (not shown) to open the fibers to a fiber length of about 0.03 cm to 5 cm. oil adsorbent (method for manufacturing an oil adsorbent), at least, defective cardboard (e.g., printing missed and non - commercializable cardboard, dirty and non - commercializable cardboard, etc.) is pulverized (e.g., pulverized into fibers), and the pulverization is performed, for example, with a fiber opener (not shown), for example, to open the fibers to a fiber length of 0. 03 cm to about 5 cm. The raw materials for the oil absorbent shown in Figure 1 are not limited to defective cardboard, but can also be, for example, used cardboard. These are balls, or cardboard boxes for disposal (for example, unnecessary cardboard boxes). The aforementioned corrugated cardboard consists of two layers of wax-impregnated inner and outer liners, and the space between the two liners A cardboard box having a wax-impregnated core sandwiched between layers, or extending over substantially the entire surface of the cardboard. It's impregnated with wax.

[0021] Therefore, according to the oil absorbent (method for manufacturing the oil absorbent) described above, at least the defective product stage Oil absorbent material made from crushed balls, used cardboard, or discarded cardboard (oil absorbent A method for manufacturing a corrugated cardboard, wherein the corrugated cardboard consists of two liners, one inside and one outside, impregnated with wax. and a wax-impregnated core sandwiched between the two liners, or Because the entire surface of the cardboard is impregnated with wax, it is a defective product. Alternatively, used cardboard or cardboard for disposal may contain wax. Two liners, one inside and one outside, impregnated with wax, which are difficult to recycle as raw materials for papermaking, and the two "Cardboard with a wax-impregnated core sandwiched between liner layers" "Approximately throughout the entire surface" Therefore, in order to make effective use of "wax-impregnated cardboard", a new wax is used in the manufacturing process. Because it eliminates the need to add oxalic acid, it allows for the rapid production of oil absorbent materials while reducing costs and resource consumption. If an oil absorbent is added to a mixture of water and oil, it will hardly absorb any water, and the oil will absorb the oil. It can preferentially adsorb to the fibers formed by crushing the ball and the gaps that make up the fibers. ru.

[0022] (Example 2) Defective paper impregnated with wax, or used paper impregnated with wax or when wax-impregnated waste paper is crushed. The oil absorbent (method for manufacturing the oil absorbent) is made of at least defective paper impregnated with wax. For example, paper impregnated with wax that has printing errors and cannot be commercialized, or wax that is dirty and cannot be commercialized. This is made by crushing (for example, into fibrous material) paper impregnated with kus, and the crushing is done, for example, as shown in the figure. These fibers were opened using a fiber opening machine (not shown), for example, to a fiber length of approximately 0.03 cm to 5 cm. The raw material for oil absorbent material is defective paper impregnated with wax (for example, paper with printing errors that were not used in commercial products). This includes not only paper impregnated with wax that cannot be used, and paper impregnated with wax that is too dirty to be commercialized, but also other types of paper. For example, used paper impregnated with wax, or waste paper impregnated with wax (example) For example, paper impregnated with unnecessary wax.

[0023] Therefore, according to the oil adsorbent (method for manufacturing the oil adsorbent) described above, at least wax Defective paper impregnated with, or used paper impregnated with wax, or wax impregnated Because it is made from shredded discarded paper, it contains defective paper impregnated with wax, or wax Used paper impregnated with wax, or waste paper impregnated with wax, contains wax. It contains wax-impregnated paper, which is difficult to recycle as a raw material for papermaking, and we aim to make effective use of it. Because there is no need to add new wax during the manufacturing process, it can be done in a short time and saves on costs and resources. It is possible to reduce the amount of oil absorbent material produced, and if you add the oil absorbent material to a mixture of water and oil... It absorbs very little water, and oil is absorbed by the fibers and fibers formed by crushing "wax-impregnated paper". It can preferentially adsorb into the gaps that make up the fibers.

[0024] (Example 3) Defective paper to which a wet paper strength enhancer and a sizing agent have been added, or wet paper strength enhancer Used paper to which strengthening agents and sizing agents have been added, or wet paper strength enhancers and When waste paper with sizing agents added is shredded The oil absorbent (and method for manufacturing the oil absorbent) contains at least a wet paper strength enhancer and a sizing agent. Defective paper that has been added (for example, wet paper strength enhancers and sizing agents that cannot be commercialized due to printing errors) (Paper with added substances, paper with added wet strength enhancers and sizing agents that are too dirty to be commercialized, etc.) This is obtained by crushing (for example, crushing into fibers), and the crushing is done, for example, with a fiber opener (not shown). For example, it is made by splitting the fibers to a length of approximately 0.03 cm to 5 cm. The raw material for the oil absorbent is defective paper to which a wet-strength enhancer and a sizing agent have been added (for example, Paper with printing errors that cannot be commercialized, containing wet-strength enhancers and sizing agents, and paper that is soiled and unsuitable for commercial use. This is not limited to paper to which wet strength enhancers and sizing agents have been added, but for example, wet strength enhancers Used paper to which strengthening agents and sizing agents have been added, or paper to which wet strength enhancers and sizing agents have been added. Disposal paper (for example, paper to which unnecessary wet strength enhancers and sizing agents have been added) be. Paper to which wet strength enhancers and sizing agents have been added is Cluster-Pak® paper, for example. For example, the packaging used in beer cartons (multipacks, Cluster-Pak®). The packaging material contains water-resistant and water-repellent materials.

[0025] Therefore, according to the oil absorbent (method for manufacturing the oil absorbent) described above, at least, wet paper strength Defective paper with added strengthening agents and sizing agents, or paper with added wet strength strengthening agents and sizing agents. Used paper that has been processed, or waste paper to which wet strength enhancers and sizing agents have been added, is crushed. Therefore, it is a defective paper to which wet strength enhancers and sizing agents have been added, This refers to used paper to which a wet strength enhancer and a sizing agent have been added, or paper to which a wet strength enhancer and Because waste paper with added sizing agents contains wet strength enhancers and sizing agents The added wet strength enhancer helps maintain the strength of the crushed fibers even after the paper has been crushed. The sizing agent used in the manufacturing process helps maintain the water-repellent properties of the shredded fibers even after the paper has been shredded. Since there is no need to add new waxes or other substances during the process, it can be done quickly and cost-effectively, without requiring resources. It is possible to manufacture an adsorbent, and if the oil adsorbent is added to a mixture of water and oil, almost all of the water will be absorbed. It does not absorb oil, and is formed by crushing "paper to which a wet-strength enhancer and sizing agent have been added" to absorb oil. The oil adsorbent in this embodiment can preferentially adsorb into the gaps between the fibers of the garment, and the oil adsorbent in this embodiment is conventional Compared to the corrugated cardboard fibers that make up the oil absorbent material, the fibers are stronger and the gaps between the fibers are wider, so oil Adsorption capacity improves.

[0026] (Example 4) Unbleached kraft paper of defects to which a paper strength enhancer and a sizing agent have been added, Used unbleached kraft paper to which paper strength enhancers and sizing agents have been added, or Unbleached kraft paper for disposal, to which paper strength enhancers and sizing agents have been added, is crushed. If The oil absorbent (method for manufacturing the oil absorbent) contains at least a paper strength enhancer and a sizing agent. Unbleached kraft paper with defects (for example, paper with printing errors that cannot be commercialized, paper strength enhancers and other materials) Unbleached kraft paper with added sizing agents, paper strength enhancers and sizing agents that are too dirty to be commercialized. This is made by crushing (for example, crushing into fibers) unbleached kraft paper with added materials, etc. For example, in a machine not shown in the diagram, the fibers are opened to a length of approximately 0.03 cm to 5 cm. be. The raw material for the oil absorbent is unbleached, defective kraft paper to which paper strength enhancers and sizing agents have been added. (For example, unbleached paper with printing errors, containing paper strength enhancers and sizing agents that cannot be commercialized) Thick paper, unbleached kraft paper with added strength enhancers and sizing agents that are too dirty to be sold commercially, etc. This is not limited to the above; for example, used unbleached kraft paper to which paper strength enhancers and sizing agents have been added. , or unbleached kraft paper for disposal to which paper strength enhancers and sizing agents have been added (for example, unnecessary This refers to unbleached kraft paper, etc., to which necessary paper strength enhancers and sizing agents have been added. Furthermore, unbleached kraft paper to which paper strength enhancers and sizing agents have been added is used, for example, in rice and wheat bags. It is used in cement bags, etc.

[0027] Therefore, according to the oil absorbent (and method for manufacturing the oil absorbent) described above, at least the paper strength is enhanced. Unbleached kraft paper of defects to which sizing agents and other additives have been added, or paper strength enhancers and sizing agents Used unbleached kraft paper to which a paper strength enhancer and sizing agent have been added, or Because it is made from crushed unbleached kraft paper intended for disposal, in other words, the added paper strength enhancers Even after the unbleached kraft paper is crushed, the crushed fibers retain their strength, and the added sizing agent... Even after crushing unbleached kraft paper, the crushed fibers maintain their water-repellent properties during manufacturing. Since there is no need to add new waxes or other substances during the process, it can be done quickly and cost-effectively, without requiring resources. It is possible to manufacture an adsorbent, and if the oil adsorbent is added to a mixture of water and oil, almost all of the water will be absorbed. It does not absorb oil, and is formed by crushing "unbleached kraft paper to which paper strength enhancers and sizing agents have been added". The oil absorbent material can preferentially adsorb oil into the gaps between the fibers, and the oil absorbent material of this embodiment The adhesive material has stronger fibers compared to the corrugated cardboard fibers that make up conventional oil absorbents, and the gaps between the fibers are smaller. Because of its larger surface area, its oil absorption capacity is improved.

[0028] (Example 5) Products containing defective hemp material, or products containing used hemp material, When materials containing waste hemp are crushed The oil absorbent material contains at least defective hemp material [for example, hemp material that cannot be commercialized]. Crushing materials (such as burlap sacks) containing wood, or materials containing damaged burlap (burlap sacks), etc. (for example, into fibers) The material is crushed, and the crushing is done, for example, with a fiber opening machine (not shown), for example, with a fiber length of 0.03 cm. These fibers have been spread to approximately 5 cm in length. The raw materials for the oil absorbent include defective hemp material [for example, hemp material that cannot be commercialized]. This includes not only items such as burlap sacks, burlap sacks containing damaged burlap material, etc., but also, for example, used burlap. This includes materials, or materials containing discarded hemp (for example, unnecessary hemp bags). In addition to burlap sacks, other items containing hemp material include hemp clothing and hemp bags. .

[0029] Therefore, according to the oil absorbent (method for manufacturing the oil absorbent) described above, at least defective products Items containing hemp material, or items containing used hemp material, or items containing hemp material for disposal. Because it contains crushed material, it is rarely reused. It contains defective hemp material, This aims to make effective use of materials that include used hemp or materials that are destined for disposal. In other words, the oil contained in hemp exhibits water-repellent properties similar to wax, during the manufacturing process. Since there is no need to add new wax, it can be manufactured quickly and at low cost. If an oil absorbent is added to a mixture of water and oil, it will hardly absorb any water, and the oil will be absorbed by the hemp material. The material is crushed to form fibers, and these fibers can preferentially adsorb into the spaces between them. Furthermore, since the oil absorbent material in this embodiment uses hemp, which inherently has strong fibers, it is not comparable to conventional oil absorbents. Compared to the fibers of cardboard that make up the body, the fibers are stronger and the gaps between the fibers are wider, resulting in high oil absorption capacity. It will improve.

[0030] (Example 6) In the above-mentioned Examples 1, 2, 3, 4, and 5, only the cardboard was impregnated with wax. Paper only, paper with added wet strength enhancers and sizing agents, paper with added wet strength enhancers and sizing agents While only unbleached kraft paper with added material, or only those containing hemp material, in the present invention, This is not limited to the above; the cardboard from Example 1, which was crushed into fibers, and the wax impregnation from Example 2 are also examples. Paper that has been crushed into fibers, and paper to which the paper strength enhancer and sizing agent of Example 3 have been added, are used. Unbleached kraft paper with fibrously ground material, and the paper strength enhancer and sizing agent from Example 4 added. The material is ground into fibers, and the hemp material from Example 5 (for example, a hemp bag) is ground into fibers. An oil absorbent made by combining two or more of the above is also acceptable. For example, 50% by weight of the cardboard from Example 1 that has been crushed into fibers, and a material containing hemp. An oil absorbent made by combining 50% by weight of pulverized burlap sacks (for example) is also acceptable. stomach. The oil adsorbent in this embodiment also adsorbs oil in the same way as in Examples 1, 2, 3, 4, and 5. The desired effect was achieved.

Claims

1. At the very least, a wet-strength enhancer and sizing agent are added, which do not require the addition of new wax. Defective paper, or wet paper strength enhancers and sizes that do not require the addition of new wax. Used paper to which the agent has been added, or a wet-strength paper enhancer that does not require the addition of new wax. An oil adsorbent characterized by being made from crushed waste paper to which a sizing agent has been added. Manufacturing method.

2. At the very least, paper strength enhancers and sizing agents are added that do not require the addition of new wax. Unbleached kraft paper with defects, or paper strength enhancers that do not require the addition of new wax, and Used, unbleached kraft paper with sizing agent added, or the need to add new wax. This is made from crushed unbleached kraft paper intended for disposal, to which paper strength enhancers and sizing agents have been added, but without any added properties. A method for producing an oil adsorbent characterized by certain features.

3. At the very least, a wet-strength enhancer and sizing agent are added, which do not require the addition of new wax. Defective paper, or wet paper strength enhancers and sizes that do not require the addition of new wax. Used paper to which the agent has been added, or a wet-strength paper enhancer that does not require the addition of new wax. It is made from crushed waste paper to which a sizing agent has been added. The aforementioned paper is a packaging material used in beer cartons (Multipack, Cluster-Pak®). A method for producing an oil adsorbent characterized by the above.

4. At the very least, a wet-strength enhancer and sizing agent are added, which do not require the addition of new wax. Defective paper, or wet paper strength enhancers and sizes that do not require the addition of new wax. Used paper to which the agent has been added, or a wet-strength paper enhancer that does not require the addition of new wax. An oil adsorbent characterized by being made from crushed waste paper to which a sizing agent has been added.

5. At the very least, paper strength enhancers and sizing agents are added that do not require the addition of new wax. Unbleached kraft paper with defects, or paper strength enhancers that do not require the addition of new wax, and Used, unbleached kraft paper with sizing agent added, or the need to add new wax. This is made from crushed unbleached kraft paper intended for disposal, to which paper strength enhancers and sizing agents have been added, but without any added properties. An oil adsorbent with certain characteristics.

6. At the very least, paper strength enhancers and sizing agents are added that do not require the addition of new wax. Unbleached kraft paper with defects, or paper strength enhancers that do not require the addition of new wax, and Used, unbleached kraft paper with sizing agent added, or the need to add new wax. This is made from crushed unbleached kraft paper intended for disposal, to which paper strength enhancers and sizing agents have been added, but without any added properties. can be, The aforementioned unbleached kraft paper is a rice / wheat bag or a cement bag. A method for producing an oil adsorbent characterized by the above.

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