WO2023277409A1 - Method for manufacturing artificial leather, and artificial leather manufactured thereby - Google Patents
Method for manufacturing artificial leather, and artificial leather manufactured thereby Download PDFInfo
- Publication number
- WO2023277409A1 WO2023277409A1 PCT/KR2022/008597 KR2022008597W WO2023277409A1 WO 2023277409 A1 WO2023277409 A1 WO 2023277409A1 KR 2022008597 W KR2022008597 W KR 2022008597W WO 2023277409 A1 WO2023277409 A1 WO 2023277409A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- polyethylene
- paper
- artificial leather
- base paper
- fabric
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims abstract description 35
- 239000002649 leather substitute Substances 0.000 title claims abstract description 26
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 20
- 239000004698 Polyethylene Substances 0.000 claims abstract description 60
- 229920000573 polyethylene Polymers 0.000 claims abstract description 60
- 239000000123 paper Substances 0.000 claims abstract description 50
- -1 polyethylene Polymers 0.000 claims abstract description 50
- 229920001903 high density polyethylene Polymers 0.000 claims abstract description 17
- 239000004700 high-density polyethylene Substances 0.000 claims abstract description 17
- 229920001684 low density polyethylene Polymers 0.000 claims abstract description 14
- 239000004702 low-density polyethylene Substances 0.000 claims abstract description 14
- 239000004745 nonwoven fabric Substances 0.000 claims abstract description 14
- 238000010438 heat treatment Methods 0.000 claims abstract description 13
- 238000004049 embossing Methods 0.000 claims abstract description 11
- 238000002156 mixing Methods 0.000 claims abstract description 10
- 239000004744 fabric Substances 0.000 claims abstract description 9
- 238000010030 laminating Methods 0.000 claims description 9
- 239000011230 binding agent Substances 0.000 abstract description 12
- 238000003475 lamination Methods 0.000 abstract description 12
- 239000000126 substance Substances 0.000 abstract description 8
- 230000000694 effects Effects 0.000 abstract description 4
- 239000004800 polyvinyl chloride Substances 0.000 description 15
- 229920000915 polyvinyl chloride Polymers 0.000 description 15
- 229920002635 polyurethane Polymers 0.000 description 9
- 239000004814 polyurethane Substances 0.000 description 9
- 238000009823 thermal lamination Methods 0.000 description 9
- 230000000052 comparative effect Effects 0.000 description 7
- 239000002759 woven fabric Substances 0.000 description 5
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 3
- 238000003851 corona treatment Methods 0.000 description 2
- 208000028659 discharge Diseases 0.000 description 2
- 239000000155 melt Substances 0.000 description 2
- 239000004014 plasticizer Substances 0.000 description 2
- 239000012855 volatile organic compound Substances 0.000 description 2
- KVGZZAHHUNAVKZ-UHFFFAOYSA-N 1,4-Dioxin Chemical compound O1C=COC=C1 KVGZZAHHUNAVKZ-UHFFFAOYSA-N 0.000 description 1
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000003796 beauty Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 150000002367 halogens Chemical class 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 150000002978 peroxides Chemical class 0.000 description 1
- 229920013716 polyethylene resin Polymers 0.000 description 1
- 230000000379 polymerizing effect Effects 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000009958 sewing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B27/10—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of paper or cardboard
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/12—Layered products comprising a layer of synthetic resin next to a fibrous or filamentary layer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/06—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the heating method
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/10—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the pressing technique, e.g. using action of vacuum or fluid pressure
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/04—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
Definitions
- the present invention relates to a method for manufacturing artificial leather that can be sufficiently laminated with only thermal laminate without using a binder harmful to the human body even when polyethylene is used.
- artificial leather is manufactured and used using PVC (Polyvinyl Chloride), PU (Poly Urethane), and the like.
- PVC Polyvinyl Chloride
- PU Poly Urethane
- Such artificial leather is used as a protective cover for sofas, automobile seats, and other products through a separate sewing operation, and also plays a role in conveying beauty and texture to users.
- PVC Polyvinyl Chloride
- PU Polyurethane
- PE resin has a problem in that thermal bonding is difficult without a base paper and a binder (bond) made of paper, fabric, nonwoven fabric, etc. There is a problem in that the process speed is too slow, more than twice as low, and lowers the price competitiveness of the sheet paper compared to the PVC sheet paper.
- the present invention is to solve the above problems, and an object of the present invention is to provide a method for manufacturing artificial leather that can be sufficiently laminated with only thermally bonded paper without using a binder harmful to the human body, base paper made of polyethylene and paper, woven or nonwoven fabric. .
- the present invention for solving the above problems relates to a method for manufacturing artificial leather, more specifically, (a) preparing a polyethylene film by blending high-density polyethylene and low-density polyethylene; (b) preheating the polyethylene film prepared in step (a) using a preheating device; (c) heat-laminating the polyethylene film preheated in step (b) by passing the base paper selected from the group consisting of paper, fabric, and non-woven fabric between the heating roll and the embossing roll of the thermal bonding device; It is characterized by including.
- Another aspect of the present invention relates to artificial leather manufactured by the above manufacturing method.
- base paper made of polyethylene, paper, woven or nonwoven fabric can be sufficiently laminated with only thermally bonded paper without using a binder harmful to the human body, preventing the emission of substances harmful to the human body, and preventing the emission of substances harmful to the human body. It is possible to use thermal lamination equipment for PVC or PU as it is, which can reduce equipment costs, and the process is simplified compared to the lamination process using a binder, which has the effect of lowering the unit cost of the product.
- the thermal lamination speed of base paper made of polyethylene and paper, woven or nonwoven fabric can be increased to a level almost equal to that of conventional PVC sheet paper, so that the price of the product can be increased. It has the effect of further enhancing competitiveness.
- the present invention relates to a method for manufacturing artificial leather, and more specifically, (a) preparing a polyethylene film by blending high-density polyethylene and low-density polyethylene; (b) preheating the polyethylene film prepared in step (a) using a preheating device; (c) heat-laminating the polyethylene film preheated in step (b) by passing the base paper selected from the group consisting of paper, fabric, and non-woven fabric between the heating roll and the embossing roll of the thermal bonding device; It is characterized by including.
- the present invention relates to a method for manufacturing artificial leather, and more specifically, (a) preparing a polyethylene film by blending high-density polyethylene and low-density polyethylene; (b) preheating the polyethylene film prepared in step (a) using a preheating device; (c) heat-laminating the polyethylene film preheated in step (b) by passing the base paper selected from the group consisting of paper, fabric, and non-woven fabric between the heating roll and the embossing roll of the thermal bonding device; It is characterized by including.
- step (a) is a step of preparing a polyethylene film
- the present invention prepares a polyethylene film by blending high-density polyethylene and low-density polyethylene, which is different from conventional polyethylene films that cannot be laminated with base paper in a thermal lamination method.
- lamination with the base paper is possible, and as a result, the base paper can be sufficiently laminated without the use of a binder (bond) harmful to the human body, preventing the emission of substances harmful to the human body, and the existing thermal lamination for PVC or PU.
- the high-density polyethylene is high-density polyethylene with high crystallinity, and has excellent mechanical properties, heat resistance, and cold resistance, but has low transparency, and is used for various containers and insulating materials.
- the low density polyethylene is polyethylene having a density of 0.91 to 0.93 with many branches and low crystallinity, and is obtained by a high-pressure method of polymerizing ethylene with a small amount of oxygen and peroxide under high pressure, and the mechanical strength is It is inferior, but has excellent processability.
- the blending ratio of the high-density polyethylene and the low-density polyethylene is not particularly limited, but in order to further shorten the time required for sheet production by further improving the thermal bonding speed of the polyethylene film and the base paper, high-density polyethylene based on weight : It is preferable that the low density polyethylene is 1:1 to 1:1.5.
- the present invention performs a corona discharge treatment on one side of the polyethylene film prepared in step (a), and then prints a heat-resistant ink for polyethylene of a desired color on the corona discharge treated side of the polyethylene film to specify a specific color. It is also possible to manufacture a polyethylene film having a color.
- step (b) is a step of preheating the polyethylene film prepared in step (a) using a preheating device, and in the present invention, the polyethylene film produced in step (a) is directly thermally bonded together with the base paper.
- the polyethylene film produced in step (a) is preheated by passing through a preheating device before being put into the thermal bonding device without being put into the device and thermally bonded, even if polyethylene (PE) is used instead of PVC. It becomes possible to laminate polyethylene (PE) and the base paper in the same thermal laminating method as the method of thermally laminating the base paper and the base paper.
- preheating of the polyethylene film prepared in step (a) is preferably performed on both sides of the polyethylene film from the viewpoint of energy efficiency, and the temperature of the preheating device is particularly limited.
- the temperature of the preheating device is particularly limited.
- any type of heating device may be used as long as it can sufficiently preheat the polypropylene, and for example, a far-infrared heater, a radiation heater, and the like may be used.
- the step (c) passes the preheated polyethylene film through the step (b) and the base paper selected from the group consisting of paper, fabric and nonwoven fabric between the heating roll and the embossing roll of the thermal lamination device.
- the polyethylene film and the base paper preheated through the step (b) are pressed by the heating roll while passing through the heating roll to form a lamination, and a bumpy texture is formed on the surface while passing through the embossing roll in the second half It becomes.
- the temperature of the heating roll and the embossing roll of the thermal bonding device is approximately 220 to 230°C. This is a problem in that when the temperature of the heating roll and the embossing roll of the thermal bonding device is less than 220 ° C, the thermal bonding speed is significantly lower than that of the conventional PVC and base paper, and when the temperature exceeds 230 ° C, This is because the temperature is too high and part of the polyethylene film melts and sticks to the roll, causing a disruption in the process.
- base paper made of polyethylene, paper, woven or nonwoven fabric can be sufficiently laminated with only thermally bonded paper without using a binder harmful to the human body, preventing the emission of substances harmful to the human body, and preventing the emission of substances harmful to the human body. It is possible to use thermal lamination equipment for PVC or PU as it is, which can reduce equipment costs, and has the advantage of lowering the unit cost of products as the process is simplified compared to the lamination process using binders.
- the thermal lamination speed of base paper made of polyethylene and paper, woven or nonwoven fabric can be increased to the same level as or higher than that of conventional PVC sheet paper, can further enhance its price competitiveness.
- a transparent polyethylene (PE) film having a thickness of 0.1 to 0.12 mm was prepared by mixing high-density polyethylene (HDPE) and low-density polyethylene (LDPE) in the mixing ratio shown in Table 1, and corona discharge treatment was performed on one side of the PE film. After performing, colors were printed on the surface treated with corona discharge using eco-friendly heat-resistant ink exclusively for PE.
- HDPE high-density polyethylene
- LDPE low-density polyethylene
- the paper part of the artificial leather was coated with water, dried, and then aged for about a week.
- Example 1 Example 2
- Example 3 Example 4 HDPE (% by weight) 60 50 40 30 LDPE (% by weight) 40 50 60 70
- Example 2 In the same conditions as in Example 2, except that the polyethylene (PE) film was not preheated, and the paper base paper was directly passed between the heating roll and the embossing roll of the thermal bonding device (230 ° C) and thermally bonded. Made of artificial leather.
- PE polyethylene
- the present invention relates to a method for manufacturing artificial leather that can be sufficiently laminated with only thermal laminate without using a binder harmful to the human body even when polyethylene is used, and has industrial applicability.
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Synthetic Leather, Interior Materials Or Flexible Sheet Materials (AREA)
Abstract
The present invention relates to a method for manufacturing artificial leather and, more particularly, is characterized by comprising the steps of: (a) manufacturing a polyethylene film by mixing high-density polyethylene and low-density polyethylene; (b) preheating the polyethylene film manufactured in step (a) using a preheating apparatus; and (c) passing a base paper between a heating roll and an embossing roll of a heat lamination apparatus and performing heat lamination on the base paper, wherein the base paper is selected from the group consisting of the polyethylene film preheated through step (b), paper, fabric, and nonwoven fabric. According to the method for manufacturing artificial leather of the present invention, there are effects of it being possible to sufficiently laminate the base paper consisting of polyethylene and paper, fabric, or nonwoven fabric by only heat lamination without the use of a binder harmful to the human body, thereby preventing the discharge of substances harmful to the human body, existing heat lamination equipment for PVC or PU being able to be used as it is, so that equipment costs can be reduced, and a process being simplified compared to a lamination process using a binder, so that product costs can be reduced. In addition, according to the method for manufacturing artificial leather of the present invention, there is an effect of being able to increase a heat lamination speed of the base paper consisting of polyethylene and paper, fabric, or nonwoven fabric to the same level or higher than a heat lamination speed of an existing PVC sheet paper, so that price competitiveness of a product can be further increased.
Description
본 발명은 폴리에틸렌을 사용하더라도 인체에 유해한 바인더의 사용 없이 열합지만으로도 충분히 합지가 가능한 인조가죽의 제조방법에 관한 것이다.The present invention relates to a method for manufacturing artificial leather that can be sufficiently laminated with only thermal laminate without using a binder harmful to the human body even when polyethylene is used.
일반적으로 인조가죽은 PVC(Polyvinyl Chloride), PU(Poly Urethane) 등을 이용하여 제조되어 사용되고 있다. 이러한 인조가죽은 별도의 재봉작업을 통하여 쇼파나 자동차용 시트 및 기타 제품의 보호커버로서 사용됨은 물론, 사용자에게 미려함과 질감을 전해주는 역할을 수행한다.In general, artificial leather is manufactured and used using PVC (Polyvinyl Chloride), PU (Poly Urethane), and the like. Such artificial leather is used as a protective cover for sofas, automobile seats, and other products through a separate sewing operation, and also plays a role in conveying beauty and texture to users.
기존의 인조가죽의 주류를 이루는 PVC(Polyvinyl Chloride), PU(Polyurethane)은 할로겐가스, 다이옥신, 휘발성 유기화합물(VOCs), 포름알데히드 등 각종 인체에 유해한 물질들을 발생시키기 때문에 폴리에틸렌(PE)으로 대체하는 시도가 이루어지고 있다. 폴리에틸렌(PE) 소재는 PVC, PU와 달리 가소제를 포함하고 있지 않아 가소재의 여러 가지 유해 물질을 포함하고 있지 않는 장점이 있다.PVC (Polyvinyl Chloride) and PU (Polyurethane), which form the mainstream of existing artificial leather, generate various substances harmful to the human body, such as halogen gas, dioxin, volatile organic compounds (VOCs), and formaldehyde. Attempts are being made. Unlike PVC and PU, polyethylene (PE) material does not contain plasticizers, so it has the advantage of not containing various harmful substances of plasticizers.
하지만, 폴리에틸렌(PE) 수지는 PVC 및 PU와는 달리 종이, 직물, 부직포 등으로 이루어진 원지와 바인더(본드) 없이 열합지가 잘 되지 않는 문제가 있으며, 열합지가 되더라도 PVC의 열합지에 비해 열합지 공정 속도가 2배 이상으로 지나치게 느려 PVC 시트지에 비해 시트지의 가격 경쟁력을 떨어뜨리는 문제가 있다.However, unlike PVC and PU, polyethylene (PE) resin has a problem in that thermal bonding is difficult without a base paper and a binder (bond) made of paper, fabric, nonwoven fabric, etc. There is a problem in that the process speed is too slow, more than twice as low, and lowers the price competitiveness of the sheet paper compared to the PVC sheet paper.
본 발명은 상기와 같은 문제점을 해결하기 위한 것으로, 폴리에틸렌과 종이, 직물 또는 부직포로 이루어진 원지를 인체에 유해한 바인더의 사용 없이 열합지만으로도 충분히 합지 가능한 인조가죽의 제조방법을 제공하는 것을 그 목적으로 한다.The present invention is to solve the above problems, and an object of the present invention is to provide a method for manufacturing artificial leather that can be sufficiently laminated with only thermally bonded paper without using a binder harmful to the human body, base paper made of polyethylene and paper, woven or nonwoven fabric. .
상기와 같은 과제를 해결하기 위한 본 발명은 인조가죽의 제조방법에 관한 것으로, 보다 구체적으로 (a) 고밀도 폴리에틸렌 및 저밀도 폴리에틸렌을 배합하여 폴리에틸렌 필름을 제조하는 단계; (b) 상기 (a) 단계에서 제조된 폴리에틸렌 필름을 예열장치를 이용하여 예열하는 단계; (c) 상기 (b) 단계를 거치면서 예열된 폴리에틸렌 필름과 종이, 직물 및 부직포로 이루어진 군으로부터 선택된 어느 하나인 원지를 열합지 장치의 히팅롤과 엠보롤 사이를 통과시켜 열합지하는 단계;를 포함하는 것을 특징으로 한다.The present invention for solving the above problems relates to a method for manufacturing artificial leather, more specifically, (a) preparing a polyethylene film by blending high-density polyethylene and low-density polyethylene; (b) preheating the polyethylene film prepared in step (a) using a preheating device; (c) heat-laminating the polyethylene film preheated in step (b) by passing the base paper selected from the group consisting of paper, fabric, and non-woven fabric between the heating roll and the embossing roll of the thermal bonding device; It is characterized by including.
또한, 본 발명의 다른 양태는 상기의 제조방법에 의해 제조된 인조가죽에 관한 것이다.In addition, another aspect of the present invention relates to artificial leather manufactured by the above manufacturing method.
본 발명에 따른 인조가죽의 제조방법에 의하면, 폴리에틸렌과 종이, 직물 또는 부직포로 이루어진 원지를 인체에 유해한 바인더의 사용 없이 열합지만으로도 충분히 합지가 가능하여, 인체에 유해한 물질의 배출을 방지하고, 기존의 PVC 또는 PU 용 열합지 설비를 그대로 이용할 수 있어 설비비용을 절감할 수 있으며, 바인더를 이용한 합지 공정에 비해 공정이 간소화되어 제품 단가를 낮출 수 있는 효과가 있다.According to the method for manufacturing artificial leather according to the present invention, base paper made of polyethylene, paper, woven or nonwoven fabric can be sufficiently laminated with only thermally bonded paper without using a binder harmful to the human body, preventing the emission of substances harmful to the human body, and preventing the emission of substances harmful to the human body. It is possible to use thermal lamination equipment for PVC or PU as it is, which can reduce equipment costs, and the process is simplified compared to the lamination process using a binder, which has the effect of lowering the unit cost of the product.
또한, 본 발명에 따른 인조가죽의 제조방법에 의하면, 폴리에틸렌과 종이, 직물 또는 부직포로 이루어진 원지의 열합지 속도를 기존의 PVC 시트지의 열합지 속도와 거의 동등한 수준으로 상승시킬 수 있어, 제품의 가격 경쟁력을 더욱 더 상승시킬 수 있는 효과가 있다.In addition, according to the artificial leather manufacturing method according to the present invention, the thermal lamination speed of base paper made of polyethylene and paper, woven or nonwoven fabric can be increased to a level almost equal to that of conventional PVC sheet paper, so that the price of the product can be increased. It has the effect of further enhancing competitiveness.
본 발명은 인조가죽의 제조방법에 관한 것으로, 보다 구체적으로 (a) 고밀도 폴리에틸렌 및 저밀도 폴리에틸렌을 배합하여 폴리에틸렌 필름을 제조하는 단계; (b) 상기 (a) 단계에서 제조된 폴리에틸렌 필름을 예열장치를 이용하여 예열하는 단계; (c) 상기 (b) 단계를 거치면서 예열된 폴리에틸렌 필름과 종이, 직물 및 부직포로 이루어진 군으로부터 선택된 어느 하나인 원지를 열합지 장치의 히팅롤과 엠보롤 사이를 통과시켜 열합지하는 단계;를 포함하는 것을 특징으로 한다.The present invention relates to a method for manufacturing artificial leather, and more specifically, (a) preparing a polyethylene film by blending high-density polyethylene and low-density polyethylene; (b) preheating the polyethylene film prepared in step (a) using a preheating device; (c) heat-laminating the polyethylene film preheated in step (b) by passing the base paper selected from the group consisting of paper, fabric, and non-woven fabric between the heating roll and the embossing roll of the thermal bonding device; It is characterized by including.
본 발명은 인조가죽의 제조방법에 관한 것으로, 보다 구체적으로 (a) 고밀도 폴리에틸렌 및 저밀도 폴리에틸렌을 배합하여 폴리에틸렌 필름을 제조하는 단계; (b) 상기 (a) 단계에서 제조된 폴리에틸렌 필름을 예열장치를 이용하여 예열하는 단계; (c) 상기 (b) 단계를 거치면서 예열된 폴리에틸렌 필름과 종이, 직물 및 부직포로 이루어진 군으로부터 선택된 어느 하나인 원지를 열합지 장치의 히팅롤과 엠보롤 사이를 통과시켜 열합지하는 단계;를 포함하는 것을 특징으로 한다.The present invention relates to a method for manufacturing artificial leather, and more specifically, (a) preparing a polyethylene film by blending high-density polyethylene and low-density polyethylene; (b) preheating the polyethylene film prepared in step (a) using a preheating device; (c) heat-laminating the polyethylene film preheated in step (b) by passing the base paper selected from the group consisting of paper, fabric, and non-woven fabric between the heating roll and the embossing roll of the thermal bonding device; It is characterized by including.
본 발명에서 상기 (a) 단계는 폴리에틸렌 필름을 제조하는 단계로서, 본 발명은 고밀도 폴리에틸렌 및 저밀도 폴리에틸렌을 배합하여 폴리에틸렌 필름을 제조함으로써, 기존의 폴리에틸렌 필름이 열합지 방식으로 원지와 합지할 수 없었던 것과는 달리 열합지 방식으로 원지와 합지가 가능해졌으며, 이로 인해 원지를 인체에 유해한 바인더(본드)의 사용 없이 충분히 합지가 가능하여, 인체에 유해한 물질의 배출을 방지하고, 기존의 PVC 또는 PU 용 열합지 설비를 그대로 이용할 수 있어 설비비용을 절감할 수 있으며, 나아가 바인더를 이용한 합지 공정에 비해 공정이 간소화되어 제품 단가를 낮출 수 있는 이점이 있다. 상기 고밀도 폴리에틸렌(High Density Polyethylene, HDPE)은 결정화도가 높고 고밀도인 폴리에틸렌으로서, 기계적 성질, 내열성, 내 한성이 우수하나 투명도는 낮은 특성을 가지며, 각종 용기, 절연 재료 등에 이용된다. 또한, 상기 저밀도 폴리에틸렌(Low Density Polyethylene, LDPE)은 분지가 많고 결정성이 낮은 밀도 0.91~0.93의 폴리에틸렌으로서, 고압하 소량의 산소와 과산화물에 의해 에틸렌을 중합하는 고압법으로 얻어지며, 기계적 강도는 떨어지지만 가공성이 우수한 특성을 가지고 있다.In the present invention, step (a) is a step of preparing a polyethylene film, and the present invention prepares a polyethylene film by blending high-density polyethylene and low-density polyethylene, which is different from conventional polyethylene films that cannot be laminated with base paper in a thermal lamination method. Unlike the thermal lamination method, lamination with the base paper is possible, and as a result, the base paper can be sufficiently laminated without the use of a binder (bond) harmful to the human body, preventing the emission of substances harmful to the human body, and the existing thermal lamination for PVC or PU. Since equipment can be used as it is, equipment costs can be reduced, and furthermore, compared to the lamination process using a binder, the process is simplified and the unit cost of the product can be lowered. The high-density polyethylene (HDPE) is high-density polyethylene with high crystallinity, and has excellent mechanical properties, heat resistance, and cold resistance, but has low transparency, and is used for various containers and insulating materials. In addition, the low density polyethylene (LDPE) is polyethylene having a density of 0.91 to 0.93 with many branches and low crystallinity, and is obtained by a high-pressure method of polymerizing ethylene with a small amount of oxygen and peroxide under high pressure, and the mechanical strength is It is inferior, but has excellent processability.
본 발명에서 상기 고밀도 폴리에틸렌 및 저밀도 폴리에틸렌의 배합 비율은 특별히 제한적인 것은 아니나, 폴리에틸렌 필름과 원지의 열합지 속도를 보다 더 향상시켜 시트지 제조에 소요되는 시간을 보다 더 단축하기 위해 중량을 기준으로 고밀도 폴리에틸렌 : 저밀도 폴리에틸렌이 1 : 1 내지 1 : 1.5 인 것이 바람직하다.In the present invention, the blending ratio of the high-density polyethylene and the low-density polyethylene is not particularly limited, but in order to further shorten the time required for sheet production by further improving the thermal bonding speed of the polyethylene film and the base paper, high-density polyethylene based on weight : It is preferable that the low density polyethylene is 1:1 to 1:1.5.
본 발명은 경우에 따라, 상기 (a) 단계에서 제조된 폴리에틸렌 필름의 한쪽 면에 대해 코로나 방전 처리를 수행한 후, 폴리에틸렌 필름의 코로나 방전 처리된 면에 원하는 색상의 폴리에틸렌용 내열 잉크를 인쇄하여 특정 색상을 가지는 폴리에틸렌 필름을 제조할 수도 있다.In some cases, the present invention performs a corona discharge treatment on one side of the polyethylene film prepared in step (a), and then prints a heat-resistant ink for polyethylene of a desired color on the corona discharge treated side of the polyethylene film to specify a specific color. It is also possible to manufacture a polyethylene film having a color.
본 발명에서 상기 (b) 단계는 상기 (a) 단계에서 제조된 폴리에틸렌 필름을 예열장치를 이용하여 예열하는 단계로서, 본 발명은 상기 (a) 단계에서 제조된 폴리에틸렌 필름을 곧바로 원지와 함께 열합지 장치에 투입하여 열합지하지 않고, 상기 (a) 단계에서 제조된 폴리에틸렌 필름을 상기 열합지 장치에 투입하기 전에 예열장치를 통과시켜 예열함으로써, PVC를 대체하여 폴리에틸렌(PE)을 사용하더라도 기존의 PVC와 원지를 열합지하는 방식과 동일한 열합지 방식으로 폴리에틸렌(PE)과 원지를 합지하는 것이 가능해진다.In the present invention, step (b) is a step of preheating the polyethylene film prepared in step (a) using a preheating device, and in the present invention, the polyethylene film produced in step (a) is directly thermally bonded together with the base paper. The polyethylene film produced in step (a) is preheated by passing through a preheating device before being put into the thermal bonding device without being put into the device and thermally bonded, even if polyethylene (PE) is used instead of PVC. It becomes possible to laminate polyethylene (PE) and the base paper in the same thermal laminating method as the method of thermally laminating the base paper and the base paper.
상기 (b) 단계에서 상기 (a) 단계에서 제조된 폴리에틸렌 필름에 대한 예열은 에너지 효율 측면에서 폴리에틸렌 필름의 양면 중 이후 원지와 합지되는 면에 이루어지는 것이 바람직하며, 예열장치의 온도는 특별히 제한적인 것은 아니나 200 내지 230℃의 온도로 예열하는 것이 바람직하다. 이는 예열장치의 온도가 200℃ 미만일 경우에는 열합지 속도가 기존의 PVC와 원지의 열합지 속도보다 현저하게 떨어지게 되는 문제가 있으며, 예열장치의 온도가 230℃를 초과하게 되면, 온도가 지나치게 높아 폴리에틸렌 필름의 일부가 녹아 예열장치의 내부 부품에 들러붙어 공정에 차질을 초래하기 때문이다.In step (b), preheating of the polyethylene film prepared in step (a) is preferably performed on both sides of the polyethylene film from the viewpoint of energy efficiency, and the temperature of the preheating device is particularly limited. However, it is preferable to preheat at a temperature of 200 to 230 ° C. This has a problem that when the temperature of the preheating device is less than 200 ° C, the speed of thermal bonding is significantly lower than that of the existing PVC and base paper. This is because part of the film melts and sticks to the internal parts of the preheating device, causing disruption to the process.
상기 예열장치는 폴리프로필렌을 충분히 예열시킬 수 있는 것이라면 어떠한 방식의 가열장치라도 사용될 수 있으며, 가령 원적외선 히터, 라디에이션 히터 등이 사용될 수 있다.As the preheating device, any type of heating device may be used as long as it can sufficiently preheat the polypropylene, and for example, a far-infrared heater, a radiation heater, and the like may be used.
본 발명에서 상기 (c) 단계는 상기 (b) 단계를 거치면서 예열된 폴리에틸렌 필름과 종이, 직물 및 부직포로 이루어진 군으로부터 선택된 어느 하나인 원지를 열합지 장치의 히팅롤과 엠보롤 사이를 통과시켜 열합지하는 단계로서, 상기 (b) 단계를 거치면서 예열된 폴리에틸렌 필름과 원지는 히팅롤을 통과하면서 히팅롤에 눌려져서 합지가 이루어지며, 후반부의 엠보롤을 통과하면서 표면에 울퉁불퉁한 질감이 형성되게 된다.In the present invention, the step (c) passes the preheated polyethylene film through the step (b) and the base paper selected from the group consisting of paper, fabric and nonwoven fabric between the heating roll and the embossing roll of the thermal lamination device. As a step of thermal lamination, the polyethylene film and the base paper preheated through the step (b) are pressed by the heating roll while passing through the heating roll to form a lamination, and a bumpy texture is formed on the surface while passing through the embossing roll in the second half It becomes.
상기 열합지 장치의 히팅롤 및 엠보롤의 온도는 대략적으로 220 내지 230℃인 것이 바람직하다. 이는 상기 열합지 장치의 히팅롤 및 엠보롤의 온도가 220℃ 미만일 경우에는 열합지 속도가 기존의 PVC와 원지의 열합지 속도보다 현저하게 떨어지게 되는 문제가 있으며, 온도가 230℃를 초과하게 되면, 온도가 지나치게 높아 폴리에틸렌 필름의 일부가 녹아 롤에 들러붙어 공정에 차질을 초래하기 때문이다.Preferably, the temperature of the heating roll and the embossing roll of the thermal bonding device is approximately 220 to 230°C. This is a problem in that when the temperature of the heating roll and the embossing roll of the thermal bonding device is less than 220 ° C, the thermal bonding speed is significantly lower than that of the conventional PVC and base paper, and when the temperature exceeds 230 ° C, This is because the temperature is too high and part of the polyethylene film melts and sticks to the roll, causing a disruption in the process.
본 발명에 따른 인조가죽의 제조방법에 의하면, 폴리에틸렌과 종이, 직물 또는 부직포로 이루어진 원지를 인체에 유해한 바인더의 사용 없이 열합지만으로도 충분히 합지가 가능하여, 인체에 유해한 물질의 배출을 방지하고, 기존의 PVC 또는 PU 용 열합지 설비를 그대로 이용할 수 있어 설비비용을 절감할 수 있으며, 바인더를 이용한 합지 공정에 비해 공정이 간소화되어 제품 단가를 낮출 수 있는 이점이 있다.According to the method for manufacturing artificial leather according to the present invention, base paper made of polyethylene, paper, woven or nonwoven fabric can be sufficiently laminated with only thermally bonded paper without using a binder harmful to the human body, preventing the emission of substances harmful to the human body, and preventing the emission of substances harmful to the human body. It is possible to use thermal lamination equipment for PVC or PU as it is, which can reduce equipment costs, and has the advantage of lowering the unit cost of products as the process is simplified compared to the lamination process using binders.
또한, 본 발명에 따른 인조가죽의 제조방법에 의하면, 폴리에틸렌과 종이, 직물 또는 부직포로 이루어진 원지의 열합지 속도를 기존의 PVC 시트지의 열합지 속도와 동등 수준 또는 그 이상으로 상승시킬 수 있어, 제품의 가격 경쟁력을 더욱 더 상승시킬 수 있다.In addition, according to the artificial leather manufacturing method according to the present invention, the thermal lamination speed of base paper made of polyethylene and paper, woven or nonwoven fabric can be increased to the same level as or higher than that of conventional PVC sheet paper, can further enhance its price competitiveness.
이하, 본 발명을 실시예를 통해 설명하도록 한다. 하기 실시예는 본 발명을 설명하기 위한 일 예에 지나지 않으며, 이에 의해 본 발명의 범위가 제한되는 것은 아니다.Hereinafter, the present invention will be described through examples. The following examples are only examples for explaining the present invention, and the scope of the present invention is not limited thereby.
<실시예><Example>
하기 표 1에 나타난 배합비율로 고밀도 폴리에틸렌(HDPE)과 저밀도 폴리에틸렌(LDPE)을 배합하여 두께 0.1 ~ 0.12mm의 투명한 폴리에틸렌(PE) 필름을 준비하고, 상기 PE 필름의 일측 면에 대해 코로나 방전 처리를 수행한 후 상기 코로나 방전 처리된 면에 친환경 PE 전용 내열 잉크를 사용하여 색상을 인쇄하였다.A transparent polyethylene (PE) film having a thickness of 0.1 to 0.12 mm was prepared by mixing high-density polyethylene (HDPE) and low-density polyethylene (LDPE) in the mixing ratio shown in Table 1, and corona discharge treatment was performed on one side of the PE film. After performing, colors were printed on the surface treated with corona discharge using eco-friendly heat-resistant ink exclusively for PE.
다음으로, 상기 색상이 인쇄된 폴리에틸렌(PE) 필름을 예열장치(210℃)를 통과시키면서 PE 필름 중 원지(종이)와 합지되는 면에 대해 예열 처리하고, 예열 처리된 PE 필름과 종이 원지를 열합지 장치(230℃)의 히팅롤과 엠보롤 사이를 통과시켜 열합지하여 인조가죽을 제조하였다.Next, while passing the color-printed polyethylene (PE) film through a preheating device (210 ° C), the surface of the PE film to be laminated with the base paper (paper) is preheated, and the preheated PE film and paper base paper are heated. Artificial leather was manufactured by heat-laminating by passing between a heating roll and an embossing roll of a laminating device (230° C.).
이후 부가적으로 종이 원지를 합지함에 따라 발생할 수 있는 시트지 휨 현상을 억제하기 위해 인조가죽의 종이 부분에 물을 코팅하여 건조시킨 후 1주일 정도 숙성을 시켰다.After that, in order to suppress the bending of the sheet, which may occur as the paper base is additionally laminated, the paper part of the artificial leather was coated with water, dried, and then aged for about a week.
| 실시예 1Example 1 | 실시예 2Example 2 | 실시예 3Example 3 | 실시예 4Example 4 | |
| HDPE (중량%)HDPE (% by weight) | 6060 | 5050 | 4040 | 3030 |
| LDPE (중량%)LDPE (% by weight) | 4040 | 5050 | 6060 | 7070 |
<비교예><Comparative example>
비교예comparative example
1 One
고밀도 폴리에틸렌(HDPE)으로만 이루어진 폴리에틸렌(PE) 필름을 사용하는 것을 제외하고는 상기 실시예와 동일한 조건으로 인조가죽을 제조하였다.Artificial leather was manufactured under the same conditions as in the above example, except that a polyethylene (PE) film made of only high-density polyethylene (HDPE) was used.
비교예 2Comparative Example 2
폴리에틸렌(PE) 필름에 대해 예열 처리를 하지 않고, 곧바로 종이 원지와 함께 열합지 장치(230℃)의 히팅롤과 엠보롤 사이를 통과시켜 열합지하는 것을 제외하고는 상기 실시예 2와 동일한 조건으로 인조가죽을 제조하였다.In the same conditions as in Example 2, except that the polyethylene (PE) film was not preheated, and the paper base paper was directly passed between the heating roll and the embossing roll of the thermal bonding device (230 ° C) and thermally bonded. Made of artificial leather.
<실험예><Experimental example>
1. 열합지 공정 속도 실험1. Thermal bonding process speed test
상기 실시예 1 내지 4와 비교예 1 및 2의 열합지 공정의 속도를 측정하였으며, 그 결과는 하기의 표 2와 같았다.The speed of the thermal bonding process of Examples 1 to 4 and Comparative Examples 1 and 2 was measured, and the results are shown in Table 2 below.
|
열합지 공정의 속도 (m/day)thermal laminating process Speed (m/day) |
|
| 실시예 1Example 1 | 59305930 |
| 실시예 2Example 2 | 70507050 |
| 실시예 3Example 3 | 73007300 |
| 실시예 4Example 4 | 61106110 |
| 비교예 1Comparative Example 1 | 42064206 |
| 비교예 2Comparative Example 2 | 49084908 |
상기 표 2에 나타난 바와 같이, 실시예 1 내지 4의 인조가죽이 비교예 1 및 2에 비해 열합지 공정의 속도가 훨씬 높아 공정의 소요 시간이 현저하게 줄어듦을 확인할 수 있으며, 특히 실시예 2 및 3의 경우는 실시예 1 및 4에 비해 상대적으로 열합지 공정의 속도가 더 높음을 알 수 있다.As shown in Table 2, it can be confirmed that the artificial leather of Examples 1 to 4 has a much higher speed of the thermal bonding process than Comparative Examples 1 and 2, and the time required for the process is significantly reduced. In the case of 3, it can be seen that the speed of the thermal bonding process is relatively higher than that of Examples 1 and 4.
본 발명은 폴리에틸렌을 사용하더라도 인체에 유해한 바인더의 사용 없이 열합지만으로도 충분히 합지가 가능한 인조가죽의 제조방법에 관한 것으로 산업상 이용가능성이 있다.The present invention relates to a method for manufacturing artificial leather that can be sufficiently laminated with only thermal laminate without using a binder harmful to the human body even when polyethylene is used, and has industrial applicability.
Claims (3)
- (a) 고밀도 폴리에틸렌 및 저밀도 폴리에틸렌을 중량을 기준으로 고밀도 폴리에틸렌 : 저밀도 폴리에틸렌이 1 : 1 내지 1 : 1.5의 배합 비율이 되도록 배합하여 폴리에틸렌 필름을 제조하는 단계;(a) preparing a polyethylene film by blending high-density polyethylene and low-density polyethylene in a blending ratio of high-density polyethylene:low-density polyethylene of 1:1 to 1:1.5 based on weight;(b) 상기 (a) 단계에서 제조된 폴리에틸렌 필름을 예열장치를 이용하여 예열하는 단계;(b) preheating the polyethylene film prepared in step (a) using a preheating device;(c) 상기 (b) 단계를 거치면서 예열된 폴리에틸렌 필름과 종이, 직물 및 부직포로 이루어진 군으로부터 선택된 어느 하나인 원지를 열합지 장치의 히팅롤과 엠보롤 사이를 통과시켜 열합지하는 단계;를 포함하는 인조가죽의 제조방법.(c) heat-laminating the polyethylene film preheated in step (b) by passing the base paper selected from the group consisting of paper, fabric, and non-woven fabric between the heating roll and the embossing roll of the thermal bonding device; Method for manufacturing artificial leather comprising
- 제 1항에 있어서,According to claim 1,상기 (b) 단계에서 상기 (a) 단계에서 제조된 폴리에틸렌 필름의 원지와 합지되는 면을 예열장치를 이용하여 200 내지 230℃의 온도로 예열하는 것을 특징으로 하는 인조가죽의 제조방법.In the step (b), the surface to be laminated with the base paper of the polyethylene film prepared in the step (a) is preheated to a temperature of 200 to 230 ° C using a preheating device.
- 제 1항 또는 제 2항의 제조방법으로 제조된 인조가죽.Artificial leather manufactured by the manufacturing method of claim 1 or 2.
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4606970A (en) * | 1983-12-19 | 1986-08-19 | Mobil Oil Corporation | Laminated plastic/non-woven film and its method of manufacture |
| KR20010110472A (en) * | 1999-04-01 | 2001-12-13 | 그래햄 이. 테일러 | Multilayer structures |
| KR20070044132A (en) * | 2005-10-24 | 2007-04-27 | 강호림 | Air-permeable wallpaper laminated with polyethylene films and method thereof |
| KR20090095044A (en) * | 2008-03-04 | 2009-09-09 | 영보화학 주식회사 | Sheet for synthetic leather and manufacturing method thereof |
| KR20190001955A (en) * | 2017-06-23 | 2019-01-08 | 주식회사 휴비스 | Primary Backing Substrae For Eco-friendly Car Seat Material |
| KR102396692B1 (en) * | 2021-06-30 | 2022-05-12 | 이동호 | Manufacturing method of artificial leather and artificial leather manufactured thereby |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7259114B2 (en) * | 2003-09-01 | 2007-08-21 | Textile Rubber & Chemical Company, Inc. | High-strength, low-cost, recyclable backing for fabrics |
| JP5590890B2 (en) * | 2006-11-13 | 2014-09-17 | シャウ インダストリーズ グループ， インコーポレイテッド | Method and system for regenerating carpets, and carpets made from recycled materials |
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4606970A (en) * | 1983-12-19 | 1986-08-19 | Mobil Oil Corporation | Laminated plastic/non-woven film and its method of manufacture |
| KR20010110472A (en) * | 1999-04-01 | 2001-12-13 | 그래햄 이. 테일러 | Multilayer structures |
| KR20070044132A (en) * | 2005-10-24 | 2007-04-27 | 강호림 | Air-permeable wallpaper laminated with polyethylene films and method thereof |
| KR20090095044A (en) * | 2008-03-04 | 2009-09-09 | 영보화학 주식회사 | Sheet for synthetic leather and manufacturing method thereof |
| KR20190001955A (en) * | 2017-06-23 | 2019-01-08 | 주식회사 휴비스 | Primary Backing Substrae For Eco-friendly Car Seat Material |
| KR102396692B1 (en) * | 2021-06-30 | 2022-05-12 | 이동호 | Manufacturing method of artificial leather and artificial leather manufactured thereby |
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