KR100322139B1 - Manufacture method and there material of leather like material - Google Patents

Abstract

The present invention utilizes a shaving scrap, a leather solid waste, which is indispensably generated for the rear control of the leather during the leather manufacturing process. It relates to a method of manufacturing a similar material.

Description

Manufacturing method of natural leather-like material and the material. {MANUFACTURE METHOD AND THERE MATERIAL OF LEATHER LIKE MATERIAL}

The present invention relates to the recycling of the saving scrap (Saving scrap), which is inevitably generated for the control of the thickness of the leather during leather manufacturing, and in particular, a method for producing a multifunctional natural leather-like material through various physical and chemical treatments and It is about the material.

Natural leather-like material (Leather like material) may be referred to as a recycled material having a leather-like feeling by utilizing leather waste and other industrial waste. Such natural leather-like material may be used as a shoe insole texon, automotive interior, interior decoration, handbag and bag reinforcement, and other architectural interior materials.

In the case of Texon, Texon, a trademark of a board manufactured by DuPont, USA, is commercialized as a midsole material fiber board that assists shoe midsoles, and mainly pulp, It can be said that the material is composed of cotton, other resins, and the like. The fiber board, which is Texon, performs the fiber-separation work by physically beating the raw materials, and then sheet-by-thickness and item-by-item to dehydrate and dry the shoes. Board will be manufactured.

However, in the case of domestic fiberboard, the pulverization process is uneven as long fibers, and there are disadvantages of unevenness, color unevenness, and hardness in the rear, and also in the case of foreign products, it is not only easy to deform, but also chemical treatment There is a problem with the hazards caused by.

On the other hand, the natural leather-like material to be implemented in the present invention, broadly speaking, using a leather fiber (Leather-fiber or Collagen fiber) is a kind of leather board that looks like a special property, that is, leather, with a leather smell and leather touch It can be said to mean a leather sheet similar to (Leatherboard).

Accordingly, an object of the present invention for solving the above problems is to make a natural leather-like shaving scrap as a raw material without changing the basic physical properties and feel of natural leather. To provide a method of manufacturing a material and the material.

Another object of the present invention is to provide a natural leather-like material having various uses while at the same time reducing the environmental pollution that can be generated during disposal by utilizing leather waste.

The present invention according to the first aspect for achieving the object as described above is beating (Beating) leather solid waste and other industrial waste for 1 to 120 minutes, it is 0.1 to 10.0% of the mixing reactor (Mixing reactor) HCOONa, 0.1-10.0% NaHCO ₃ , neutralized for 10-360 minutes, 0.1-10.0% Retanning agent was treated for 10-240 minutes, and then 0.1-20.0% A method of preparing natural leather-like materials by mixing and stirring eggplants (Oil or Fatliquor) and special binding materials (Binding materials) for 10 to 180 minutes and then sheeting them under a continuous production system.

1 is a flow chart illustrating a manufacturing process of a natural leather-like material according to an embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail. In the following description, it should be noted that only parts necessary for understanding the manufacturing method of the present invention will be described, and descriptions of other parts will be omitted so as not to obscure the subject matter of the present invention.

According to the manufacturing method of the multi-functional natural leather-like material of the present invention, as part of the method for increasing the productability of the product during the leather manufacturing process, inevitably in the shaving process, which is a process for adjusting the thickness, the thickness of the leather The resulting shaving scraps and vegetable tanned scraps, and tricots, which are cutting pieces generated in the fiber satin, are used as raw materials.

In addition, the raw materials are mixed at a suitable ratio to suit the purpose of the product, and then fibrized through a Niagara beater, a cutting mill, a disk mill, a fiber refiner, and the like. Make it.

On the other hand, the result of the fiberization process is subjected to a mixing process in a mixing reactor (Mixing reactor), preferably 0.1 to 10.0% HCOONa, 0.1 to 10.0% as a neutralizing agent in the mixing reactor (Mixing reactor) containing the result NaHCO ₃ is added to carry out the neutralization process for 10 to 360 minutes.

Next, 0.1 to 10.0% of a retanning agent is added to the resultant of the neutralization process, and then a retanning process is performed for 10 to 240 minutes. Here, the retanning agent provides a filling feeling of a leather-like material and at the same time controls flexibility, and as the material, mimosa, chestnut, quebracho And vegetable tanning agents (Vegetable tanning agent) and other synthetic tanning agents (Synthetic tanning agent).

Subsequently, a binder of 0.1 to 30.0% polyvinyl acetate or polyacrylate based binder as a resultant obtained through the fiberization process, the neutralization process, and the retanning process as described above. ) And 0.1 to 30.0% latex (Latex, SBR latex, NR latex, etc.). At this time, the use of the above-described binder allows to induce a smooth bond between the fibers (Fiber) during the sheet (Sheet) process for the manufacture of natural leather-like material.

On the other hand, as the binder of the polyvinylacetate or polyacrylate-based system used as the binder described above, "Brand name: E-76, E-76H, E-77S, E-77H, E-79, E-79H, E- 79S (Company name: Clova), J-21, J-56, J-810 (company name: Garden Chemical), K-96, A-76, H-40, H-10 (Korea Polymer), Icatan 477 (company name: Icap) "is used. And the latex (Latex) "Product name: NR latex, SBR KSL-103, SBR KSL-106, SBR KSL-203, SBR KSL-205, SBR KSL-207, SBR KSL-321, SBR KSL-341, SBR KSL -361, SBR KSL-5123, SBR KSL-5124, SBR KSL-5153 (Company: Kumho Petrochemical), Lutex-470, Lutex-480 (Company: LG Chemical).

Such a mixture is subjected to sheeting using a modified sheet manufacturing apparatus (Sheet forming M / C, also known as Fourdrinier M / C) used in the papermaking process, and then compressed and dehydrated. And a natural leather-like material through a drying process.

Hereinafter, the present invention will be described in detail with reference to preferred embodiments of the present invention. However, the present invention is not limited to the embodiments, and detailed descriptions and drawings of the above-described modified sheet forming apparatus (Modified Sheet forming M / C) are provided. Will be omitted.

Example 1

Leather solid wastes and other industrial wastes are filtrated for 15 minutes to be fibrous, then sheeted, and then compressed and dehydrated again, followed by dyeing and drying, followed by surface treatment to 0.1 to A 1.8mm natural leather-like material for wrapping paper and wallpaper was prepared.

Example 2

Leather solid wastes and other industrial wastes were bent for 10 minutes to fiberize, and then neutralized for 60 minutes by treatment with 1.0% HCOONa and 2.0% NaHCO ₃ in a mixing reactor, followed by 3.0% Treated with vegetable tanning agent (Vimotable tanning agent: Mimosa) for 30 minutes to give a feeling of filling, and again treated with Lipoderm liquor CMG (BASF) as a 10.0% fatliquor (BSF) to provide flexibility and surface texture Then, after mixing and stirring it again with 20.0% of a special binder (Binding material: E-77H, Co., Ltd.) for 60 minutes, it was sheeted, compressed and dehydrated, and dyed and dried. Natural leather-like materials for back counter use were prepared.

Example 3

5 minutes of leather solid waste and other industrial wastes were fiberized and then neutralized for 60 minutes by 1.0% HCOONa and 2.0% NaHCO ₃ in a mixing reactor, followed by 3.0% Synthetic tanning agent (Synthetic tanning agent: Relugan S, BASF) treated for 30 minutes to give heat resistance and surface effects (Effect), and treated with 10.0% eggplant (Fatliquor: Lipoderm liquor CMG, BASF) After providing flexibility, a special binding material (Binding material: E-77H, Inc.) is mixed and stirred for 60 minutes, and then sheeted, then pressed and dehydrated again, and dyed and dried. A natural leather-like material for a book binder was prepared through.

Example 4

Leather solid wastes and other industrial wastes were bent for 5 minutes to fiberize, and then neutralized for 60 minutes by treatment with 1.0% HCOONa and 2.0% NaHCO ₃ in a mixing reactor, followed by 20.0% Fatliquor: Lipoderm liquor CMG (BASF) was treated to provide flexibility and surface feel, which was then mixed with 15.0% of a special binder (SBR KSL-341, Kumho Petrochemical) for 60 minutes. After stirring, the sheet was re-sheeted, pressed and dehydrated, and then dyed and dried to prepare a soft leather-like natural leather like midsole.

Example 5

Leather solid wastes and other industrial wastes were bent for 10 minutes to fiberize, and then neutralized for 60 minutes by treatment with 1.0% HCOONa and 2.0% NaHCO ₃ in a mixing reactor, followed by 3.0% After 30 minutes of treatment with vegetable tanning agent (Quebracho) to give a feeling of filling, and then again 20.0% of the special binding material (Binding material: E-77H, Krobar, SBR KSL-5213, Kumho Petroleum) Chemistry) and mixed for 60 minutes, then sheets are pressed and dehydrated, dyed and dried to obtain a natural leather-like material for the wick or reinforcement of a hard type bag or handbag. Prepared.

Example 6

Leather solid wastes and other industrial wastes were subjected to beating for 20 minutes to be fibrous, and then neutralized for 60 minutes by treatment with 1.0% HCOONa and 2.0% NaHCO ₃ in a mixing reactor, followed by 20.0% After mixing and stirring the special binding material (Binding material: E-77H, CROBA) for 60 minutes, it is sheeted, compressed and dehydrated, and dyed and dried to be hard (hard type). Natural leather-like materials for building interior materials for soundproofing and moisture proofing were prepared.

Example 7

Filtration of leather solid waste and other industrial waste for 15 minutes followed by fiberization, followed by neutralization for 60 minutes with 1.0% HCOONa and 2.0% NaHCO ₃ in a mixing reactor, followed by 10.0% Treated with eggplant (Fatliquor: Lipoderm liquor CMG, BASF) to provide flexibility, and then mixed and stirred with 20.0% of a special binding agent (Binding material: E-77H, Inc.) for 60 minutes The sheet was compressed into a sheet, pressed and dehydrated, and dyed and coated on a surface subjected to a drying process to prepare a natural leather-like material for floor decoration.

On the other hand, it can be seen that the natural leather-like material (Leather like material) prepared according to each embodiment as described above has physical properties of tensile strength of 0.8kg _f / mm ² or more, tear strength of 0.8kg _f / mm or more.

As described above, the present invention utilizes a shaving scrap, a leather solid waste, which is indispensably generated by the leather manufacturer in order to control the thickness of the leather during the leather manufacturing process. It has the advantage of eliminating the problem of increasing the burden on the company due to pollution and disposal costs, and the possibility of manufacturing natural leather-like materials from the waste resources at the same time.

In addition, the natural leather-like material produced by the present invention is less harmful due to deformation and chemical treatment than the conventional fiberboard, which has the effect of obtaining recycled leather material that can be spotlighted in various fields. have.

Claims (5)

In the manufacturing method of the natural leather-like material, Beating the leather solid waste and other industrial wastes for ₁ to 120 minutes, and then neutralizing them for 10 to 360 minutes by treating 0.1 to 10.0% HCOONa and 0.1 to 10.0% NaHCO ₃ in a stirring tank; A step of treating 0.1 to 10.0% of a retaining agent for 10 to 360 minutes in a stirring tank containing the result of the above process; The process of producing a natural leather-like material, characterized in that the process of imparting flexibility to the resulting product by performing the retanning process 0.1-20.0% 0il or branching agent. The natural leather according to claim 1, wherein 0.1 to 30.0% polyvinylacetate or a polyacrylate-based binder, 0.1 to 30.0% latex, or the like is treated on the branched and retanned resultant as a binder. Method of making similar materials. The method of manufacturing a natural leather-like material according to claim 2, wherein the resultant of the bonding agent is sheeted using a continuous system of a sheet forming M / C. 4. The method of claim 3, wherein the aesthetic effect is increased by surface dyeing and silver coating of the sheeted resultant, embossing and perforating for pattern formation. Natural leather-like material produced by the method of any one of claims 1 to 4.