KR101315279B1 - Oriented Co-extrusion Film with Multi-Adhesive-Layer - Google Patents
Oriented Co-extrusion Film with Multi-Adhesive-Layer Download PDFInfo
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- KR101315279B1 KR101315279B1 KR1020110075774A KR20110075774A KR101315279B1 KR 101315279 B1 KR101315279 B1 KR 101315279B1 KR 1020110075774 A KR1020110075774 A KR 1020110075774A KR 20110075774 A KR20110075774 A KR 20110075774A KR 101315279 B1 KR101315279 B1 KR 101315279B1
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- 239000012790 adhesive layer Substances 0.000 title claims abstract description 136
- 238000001125 extrusion Methods 0.000 title claims description 5
- 238000000034 method Methods 0.000 claims abstract description 15
- 239000010410 layer Substances 0.000 claims description 54
- 238000002844 melting Methods 0.000 claims description 47
- 230000008018 melting Effects 0.000 claims description 47
- 229920005989 resin Polymers 0.000 claims description 46
- 239000011347 resin Substances 0.000 claims description 46
- 239000011229 interlayer Substances 0.000 claims description 42
- 150000001336 alkenes Chemical class 0.000 claims description 12
- -1 ethylene, propylene, 1-butene Chemical class 0.000 claims description 11
- 239000002344 surface layer Substances 0.000 claims description 11
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 claims description 10
- 239000000758 substrate Substances 0.000 claims description 9
- 150000001732 carboxylic acid derivatives Chemical class 0.000 claims description 8
- 229920000089 Cyclic olefin copolymer Polymers 0.000 claims description 7
- 150000001244 carboxylic acid anhydrides Chemical class 0.000 claims description 7
- 229920001577 copolymer Polymers 0.000 claims description 7
- AFFLGGQVNFXPEV-UHFFFAOYSA-N 1-decene Chemical compound CCCCCCCCC=C AFFLGGQVNFXPEV-UHFFFAOYSA-N 0.000 claims description 6
- KWKAKUADMBZCLK-UHFFFAOYSA-N 1-octene Chemical compound CCCCCCC=C KWKAKUADMBZCLK-UHFFFAOYSA-N 0.000 claims description 6
- RWHRFHQRVDUPIK-UHFFFAOYSA-N 50867-57-7 Chemical compound CC(=C)C(O)=O.CC(=C)C(O)=O RWHRFHQRVDUPIK-UHFFFAOYSA-N 0.000 claims description 6
- QABZOJKEJLITJL-UHFFFAOYSA-N but-3-enoic acid;ethenyl acetate Chemical compound CC(=O)OC=C.OC(=O)CC=C QABZOJKEJLITJL-UHFFFAOYSA-N 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 6
- YWAKXRMUMFPDSH-UHFFFAOYSA-N pentene Chemical compound CCCC=C YWAKXRMUMFPDSH-UHFFFAOYSA-N 0.000 claims description 6
- 239000004711 α-olefin Substances 0.000 claims description 5
- WROUWQQRXUBECT-UHFFFAOYSA-N 2-ethylacrylic acid Chemical compound CCC(=C)C(O)=O WROUWQQRXUBECT-UHFFFAOYSA-N 0.000 claims description 4
- 239000003795 chemical substances by application Substances 0.000 claims description 4
- FEUFEGJTJIHPOF-UHFFFAOYSA-N 2-butyl acrylic acid Chemical compound CCCCC(=C)C(O)=O FEUFEGJTJIHPOF-UHFFFAOYSA-N 0.000 claims description 3
- WWUVJRULCWHUSA-UHFFFAOYSA-N 2MP Natural products CCCC(C)=C WWUVJRULCWHUSA-UHFFFAOYSA-N 0.000 claims description 3
- ATMLPEJAVWINOF-UHFFFAOYSA-N acrylic acid acrylic acid Chemical compound OC(=O)C=C.OC(=O)C=C ATMLPEJAVWINOF-UHFFFAOYSA-N 0.000 claims description 3
- 239000000654 additive Substances 0.000 claims description 3
- RYPKRALMXUUNKS-UHFFFAOYSA-N hex-2-ene Chemical compound CCCC=CC RYPKRALMXUUNKS-UHFFFAOYSA-N 0.000 claims description 3
- TVMXDCGIABBOFY-UHFFFAOYSA-N n-Octanol Natural products CCCCCCCC TVMXDCGIABBOFY-UHFFFAOYSA-N 0.000 claims description 3
- 239000004609 Impact Modifier Substances 0.000 claims description 2
- 239000006096 absorbing agent Substances 0.000 claims description 2
- 230000000996 additive effect Effects 0.000 claims description 2
- 239000003963 antioxidant agent Substances 0.000 claims description 2
- 239000002216 antistatic agent Substances 0.000 claims description 2
- 239000000945 filler Substances 0.000 claims description 2
- 239000000314 lubricant Substances 0.000 claims description 2
- 239000004014 plasticizer Substances 0.000 claims description 2
- LKUWQWDAIWXHIY-UHFFFAOYSA-N 2-methylbut-2-enoic acid Chemical compound CC=C(C(=O)O)C.CC=C(C(=O)O)C LKUWQWDAIWXHIY-UHFFFAOYSA-N 0.000 claims 1
- IROHAHSEZJNYEB-UHFFFAOYSA-N CC(C(=O)O)=CCC.CC(C(=O)O)=CCC Chemical compound CC(C(=O)O)=CCC.CC(C(=O)O)=CCC IROHAHSEZJNYEB-UHFFFAOYSA-N 0.000 claims 1
- 230000001070 adhesive effect Effects 0.000 abstract description 17
- 239000000853 adhesive Substances 0.000 abstract description 15
- 238000004519 manufacturing process Methods 0.000 abstract description 14
- 238000011109 contamination Methods 0.000 abstract description 8
- 239000011248 coating agent Substances 0.000 abstract description 6
- 238000000576 coating method Methods 0.000 abstract description 6
- 238000003475 lamination Methods 0.000 abstract description 5
- 239000002184 metal Substances 0.000 abstract description 3
- 239000005038 ethylene vinyl acetate Substances 0.000 description 8
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 8
- 239000000047 product Substances 0.000 description 6
- 239000004743 Polypropylene Substances 0.000 description 5
- 229920001155 polypropylene Polymers 0.000 description 5
- 238000009820 dry lamination Methods 0.000 description 4
- 229920005672 polyolefin resin Polymers 0.000 description 4
- 238000009823 thermal lamination Methods 0.000 description 4
- UIERETOOQGIECD-UHFFFAOYSA-N Angelic acid Natural products CC=C(C)C(O)=O UIERETOOQGIECD-UHFFFAOYSA-N 0.000 description 3
- UIERETOOQGIECD-ONEGZZNKSA-N tiglic acid Chemical compound C\C=C(/C)C(O)=O UIERETOOQGIECD-ONEGZZNKSA-N 0.000 description 3
- JJYWRQLLQAKNAD-UHFFFAOYSA-N 2-methylpent-2-enoic acid Chemical compound CCC=C(C)C(O)=O JJYWRQLLQAKNAD-UHFFFAOYSA-N 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 238000003795 desorption Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000155 melt Substances 0.000 description 2
- 239000000178 monomer Substances 0.000 description 2
- 239000002356 single layer Substances 0.000 description 2
- GNZFHCIZFRLLLQ-UHFFFAOYSA-N 2-methylidenebutanoic acid Chemical compound CCC(=C)C(O)=O.CCC(=C)C(O)=O GNZFHCIZFRLLLQ-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- DQXBYHZEEUGOBF-UHFFFAOYSA-N but-3-enoic acid;ethene Chemical compound C=C.OC(=O)CC=C DQXBYHZEEUGOBF-UHFFFAOYSA-N 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 150000001735 carboxylic acids Chemical class 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000000113 differential scanning calorimetry Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Images
Classifications
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- 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
- B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
-
- 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
- B32B27/08—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 synthetic resin
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/16—Articles comprising two or more components, e.g. co-extruded layers
- B29C48/18—Articles comprising two or more components, e.g. co-extruded layers the components being layers
-
- 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
- B32B37/12—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
-
- 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
- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
- B32B7/04—Interconnection of layers
- B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J7/00—Adhesives in the form of films or foils
- C09J7/20—Adhesives in the form of films or foils characterised by their carriers
- C09J7/29—Laminated material
-
- 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
- B32B2405/00—Adhesive articles, e.g. adhesive tapes
Abstract
본 발명은 열 접착 특성이 우수한 다중 접착층을 갖는 연신 공압출 필름에 관한 것으로, 보다 상세하게는 종이, 필름, 금속 등의 접착 대상물에 직접 접착이 가능한 다중 접착층을 갖는 연신 공압출 필름에 관한 것이다.
본 발명에 따른 다중 접착층을 갖는 연신 공압출 필름에 의할 경우, EVA 라미네이션 코팅과 같은 추가 공정, 두께 불균일, 제조과정에서의 롤의 오염 등이 없으면서도, 접착 대상물과의 접착력이 우수한 연신 공압출 필름을 얻을 수 있게 된다. BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stretched coextruded film having multiple adhesive layers having excellent thermal adhesive properties, and more particularly, to a stretched coextruded film having a multiple adhesive layer capable of directly adhering to an adhesive object such as paper, film, and metal.
In the case of the stretched coextrusion film having the multiple adhesive layers according to the present invention, the stretch coextrusion with excellent adhesion to the object to be bonded is achieved without additional processes such as EVA lamination coating, thickness unevenness, contamination of the rolls during the manufacturing process, and the like. A film can be obtained.
Description
본 발명은 열 접착 특성이 우수한 다중 접착층을 갖는 연신 공압출 필름에 관한 것으로, 보다 상세하게는 종이, 필름, 금속 등의 접착 대상물에 직접 접착이 가능한 다중 접착층을 갖는 연신 공압출 필름에 관한 것이다.
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stretched coextruded film having multiple adhesive layers having excellent thermal adhesive properties, and more particularly, to a stretched coextruded film having a multiple adhesive layer capable of directly adhering to an adhesive object such as paper, film, and metal.
일반적으로 종이, 금속 또는 필름 등의 접착 대상물에 필름을 접착시키는 방법으로는 이축 연신 폴리프로필렌 필름(BOPP) 표면에 아크릴계 또는 유성 접착제 등과 같은 프라이머(primer)를 도포하여 접착 대상물과 접착하는 드라이 라미네에션(dry lamination) 방법과, 표면층에 프라이머를 대체할 수 있는 폴리올레핀 수지를 공압출한 후, 상기 폴리올레핀 수지층 위에 에틸렌초산비닐 수지(EVA)를 라미네이션 코팅하여 접착 대상물과 접착하는 써멀 라미네이션(thermal lamination) 방법이 있다(대한민국 등록특허 10-0531256, 대한민국 등록특허 10-0656264).In general, a method of adhering a film to an object to be bonded such as paper, a metal, or a film may be performed by applying a primer such as an acrylic or an oil-based adhesive on the surface of a biaxially stretched polypropylene film (BOPP) to dry lamination that is bonded to the object to be bonded. Thermal lamination method of dry lamination and co-extrusion of a polyolefin resin that can replace a primer on the surface layer, and then laminating the ethylene vinyl acetate resin (EVA) on the polyolefin resin layer and bonding it to an object to be bonded. ) Method (Republic of Korea Patent Registration 10-0531256, Republic of Korea Patent Registration 10-0656264).
최근 들어, 상기 드라이 라미네이션 방법에 사용되는 용매 등이 환경에 유해한 것으로 알려지면서 드라이 라미네이션으로 생산된 제품은 선진국에서 사용이 제한되기 시작하여, 점차 써멀 라미네이션으로 생산된 제품으로 대체되고 있는 실정이다.Recently, as the solvents used in the dry lamination method and the like are known to be harmful to the environment, the products produced by dry lamination start to be restricted in developed countries, and are gradually replaced by products produced by thermal lamination.
그러나 상기 써멀 라미네이션 방법은 EVA를 코팅해야만 종이 등의 접착 대상물과 접착이 가능하기 때문에 EVA 라미네이션 코팅에 따른 추가 가공비가 들어가며, EVA 자체가 수요에 따라 가격이 급등락하여 일정한 수익 구조를 가지기 어려운 문제점을 가지고 있다.However, since the thermal lamination method is capable of adhering to an adhesive object such as paper only by coating the EVA, additional processing costs are required according to the EVA lamination coating, and EVA itself has a problem that it is difficult to have a constant profit structure due to a sharp rise in price according to demand. have.
최근의 써멀 라미네이션용 BOPP 중에는 폴리올레핀 계열의 단일 열접착층을 형성하고, 상기 열접착층의 두께를 높여 EVA 라미네이션 코팅 없이 종이 등의 접착 대상물과의 접착이 가능한 제품이 일부 생산되고 있는 것으로 알려져 있다. 그러나, 단순히 단일 열접착층의 두께를 증가시킨 제품은 생산 및 적용에 한계가 있다. 우선, 기재층의 폴리프로필렌은 160℃ 이상의 녹는점을 가지고 열접착층 수지는 50~110℃의 녹는점을 가지는데, 기재층과 열접착층을 공압출하는 경우 녹는점이 높은 수지를 기준으로 온도를 설정하기 때문에 열접착층 수지는 적정 이상의 유동성을 보이게 되고 이러한 결과로 열접착층의 두께 불균형이 나타나게 된다. 이러한 두께 불균형은 열접착층의 두께가 얇을 경우에는 불균형의 정도가 약하지만, 열접착층의 두께를 두껍게 생산할 때에는 불균형의 정도가 심하게 나타나게 되며, 또한 생산 속도를 점차적으로 상승시키면 두께 편차가 심해져 필름으로서의 상업적 가치가 상실될 뿐만 아니라 생산 효율도 떨어지는 문제점을 안고 있었다.In recent thermal lamination BOPP, it is known that some products capable of forming a single polyolefin-based thermal adhesive layer, increasing the thickness of the thermal adhesive layer, and adhering to an adhesive object such as paper without EVA lamination coating have been produced. However, products that simply increase the thickness of a single thermal adhesive layer have limitations in production and application. First, the polypropylene of the base layer has a melting point of 160 ° C. or higher and the heat adhesive layer resin has a melting point of 50 to 110 ° C. When co-extrusion of the base layer and the heat adhesive layer, the temperature is set based on the high melting point resin. Therefore, the heat-adhesive layer resin exhibits fluidity more than appropriate, and as a result, the thickness imbalance of the heat-adhesive layer appears. This thickness imbalance is weak when the thickness of the heat adhesive layer is thin, but when the thickness of the heat adhesive layer is produced thick, the degree of unbalance appears severely, and when the production rate is gradually increased, the thickness variation becomes more severe and commercially available as a film. Not only was the value lost, but the production efficiency also had problems.
또한, 열접착층의 두께를 증가시킨 제품을 생산할 때에는 열접착층과 기재층의 폴리프로필렌 간에 접착력의 부족이 발생하여 열접착층의 일부가 필름에서 탈착되어 롤을 오염시키게 되므로, 결과적으로 열접착층으로 사용하는 수지를 제한하는 방향으로 제품 생산이 이루어져 왔다. 나아가, 이러한 열접착층 수지의 제한은 최종 적용 대상이 되는 종이 등의 접착 대상물과 접착시 충분한 접착력을 나타내지 못하게 되어 접착력이 낮은 제품에 제한적으로 적용되어 사용될 수 밖에 없는 문제점이 있었다.
In addition, when producing a product having an increased thickness of the thermal adhesive layer, a lack of adhesive force occurs between the thermal adhesive layer and the polypropylene of the base layer, so that a part of the thermal adhesive layer is detached from the film and contaminates the roll. As a result, it is used as the thermal adhesive layer. Product production has been done in the direction of limiting the resin. In addition, the limitation of such a heat-adhesive layer resin has a problem that can not be used to be limited to the product having a low adhesive strength because it does not exhibit sufficient adhesive strength when bonding with the adhesive object such as paper to be applied finally.
본 발명은 상기와 같은 종래 기술의 문제점을 해결하기 위하여 안출된 것으로서, EVA 라미네이션 코팅과 같은 추가 공정, 두께 불균일, 제조과정에서의 롤의 오염 등이 없으면서도, 접착 대상물과의 접착력이 우수한 연신 공압출 필름을 제공하는 것을 그 목적으로 한다.
The present invention has been made in order to solve the problems of the prior art as described above, stretching balls excellent in adhesion to the adhesive object, without the additional process such as EVA lamination coating, thickness unevenness, contamination of the roll in the manufacturing process, etc. The object is to provide an extruded film.
상술한 목적을 달성하기 위하여 본 발명은 다중 접착층을 갖는 연신 공압출 필름을 제공하는데, 본 발명의 일례에 따른 다중 접착층을 갖는 연신 공압출 필름은, 기재층과 기재층에 접한 접착층을 포함하는 연신 공압출 필름에 있어서, 상기 접착층은 상기 기재층에 접한 한층 이상의 Inter-Layer 접착층 및 상기 Inter-Layer 접착층에 접한 한층 이상의 열접착층으로 이루어지며, 상기 Inter-Layer 접착층은 올레핀 공중합체 또는 올레핀과 불포화카르본산 또는 불포화카르본산 무수물과의 공중합체이면서 녹는점(Tm)이 90 내지 150℃인 수지로 이루어지고, 상기 열접착층은 올레핀 공중합체 또는 올레핀과 불포화카르본산 또는 불포화카르본산 무수물과의 공중합체이면서 녹는점(Tm)이 70 내지 130℃인 수지로 이루어진다.In order to achieve the above object, the present invention provides a stretched coextruded film having multiple adhesive layers, the stretched coextruded film having a multiple adhesive layer according to an example of the present invention, stretched comprising a base layer and an adhesive layer in contact with the base layer In the coextrusion film, the adhesive layer is composed of at least one inter-layer adhesive layer in contact with the substrate layer and at least one thermal adhesive layer in contact with the inter-layer adhesive layer, wherein the inter-layer adhesive layer is an olefin copolymer or an olefin and unsaturated carbide. The copolymer of the main acid or unsaturated carboxylic anhydride and the melting point (T m ) is made of a resin of 90 to 150 ℃, the heat-adhesive layer is an olefin copolymer or a copolymer of olefin and unsaturated carboxylic acid or unsaturated carboxylic anhydride While melting point (T m ) is made of a resin of 70 to 130 ℃.
상기 Inter-Layer 접착층을 이루는 수지의 녹는점은 상기 기재층을 이루는 수지의 녹는점보다 낮고, 상기 열접착층을 이루는 수지의 녹는점은 상기 Inter-Layer 접착층을 이루는 수지의 녹는점보다 낮은 것이 바람직하다.The melting point of the resin constituting the inter-layer adhesive layer is lower than the melting point of the resin constituting the base layer, and the melting point of the resin constituting the thermal adhesive layer is lower than the melting point of the resin constituting the inter-layer adhesive layer. .
상기 올레핀은 α-올레핀인 것이 바람직하며, 상기 α-올레핀은 에틸렌, 프로필렌, 1-부텐, 1-펜텐, 1-핵센, 1-메틸-1-펜텐, 1-핵센, 1-옥텐, 1-데센 및 이들의 혼합물로 이루어지는 군으로부터 선택될 수 있다.The olefin is preferably an α-olefin, and the α-olefin is ethylene, propylene, 1-butene, 1-pentene, 1-nuxene, 1-methyl-1-pentene, 1-nuxene, 1-octene, 1- Decene and mixtures thereof.
상기 불포화카르본산은 아크릴산(Acrylic Acid), 메타트릴산(Methacrylic Acid), 비닐초산(vinyl Acetic Acid), 초산비닐(Vinyl Acetate), 메틸-아크릴산(Methyl-acrylic Acid), 에틸-아크릴산(Ethyl-acrylic Acid), 부틸-아크릴산(Buthyl-acrylic Acid), 메틸-메타크릴산(Methyl Methacrylic Acid), 에틸-메타크릴산(Ethyl Methacrylic Acid) 및 이들의 혼합물로 이루어지는 군으로부터 선택될 수 있다.
The unsaturated carboxylic acid is acrylic acid (Acrylic Acid), methacrylic acid (Methacrylic Acid), vinyl acetate (vinyl Acetic Acid), vinyl acetate (Vinyl Acetate), methyl-acrylic acid (Methyl-acrylic Acid), ethyl-acrylic acid (Ethyl- acrylic acid), butyl-acrylic acid, methyl-methacrylic acid, methyl-methacrylic acid, and ethyl-methacrylic acid, and mixtures thereof.
본 발명에 따른 다중 접착층을 갖는 연신 공압출 필름에 의할 경우, EVA 라미네이션 코팅과 같은 추가 공정, 두께 불균일, 제조과정에서의 롤의 오염 등이 없으면서도, 접착 대상물과의 접착력이 우수한 연신 공압출 필름을 얻을 수 있게 된다.
In the case of the stretched coextrusion film having the multiple adhesive layers according to the present invention, the stretch coextrusion with excellent adhesion to the object to be bonded is achieved without additional processes such as EVA lamination coating, thickness unevenness, contamination of the rolls during the manufacturing process, and the like. A film can be obtained.
도 1은 본 발명의 실시예 1에 의하여 제조된 다중 접착층을 갖는 연신 공압출 필름의 샘플 사진이다.1 is a sample photograph of a stretched coextrusion film having multiple adhesive layers prepared by Example 1 of the present invention.
이하 본 발명을 상세히 설명한다.Hereinafter, the present invention will be described in detail.
본 발명은 다중 접착층을 갖는 연신 공압출 필름을 제공하는데, 본 발명의 일례에 따른 다중 접착층을 갖는 연신 공압출 필름은, 기재층과 접한 단일 접착층으로 이루어지던 종래와 달리 접착층을 기재층과 접한 Inter-Layer 접착층 및 상기 Inter-Layer 접착층에 접한 열접착층으로 구성함으로써 접착 대상물과의 접착력을 향상시킴과 아울러 접착층의 두께 불균일 및 기재층과 접착층의 접착력 부족으로 접착층이 기재층에서 이탈되면서 롤(Roll)을 오염시키던 문제 등을 해결함으로서 품질, 생산성 향상 및 원가를 절감시킬 수 있는 연신 공압출 필름을 제공하는데 그 특징이 있다. The present invention provides a stretched coextruded film having a multi-adhesive layer, the stretched co-extruded film having a multi-adhesive layer according to an example of the present invention, unlike the prior art consisting of a single adhesive layer in contact with the base layer Inter contacting the adhesive layer with the base layer It is composed of a layer adhesive layer and a thermal adhesive layer in contact with the inter-layer adhesive layer to improve the adhesion to the object to be bonded, and the adhesive layer is separated from the substrate layer due to the uneven thickness of the adhesive layer and the lack of adhesion between the substrate layer and the adhesive layer. It is characterized by providing a stretched coextruded film that can solve the problem of contaminating the film and the like, thereby improving the quality, productivity and cost.
즉, 본 발명에 따른 다중 접착층을 갖는 연신 공압출 필름은 기재층과 기재층에 접한 접착층을 포함하는 연신 공압출 필름에 있어서, 상기 접착층은 상기 기재층에 접한 Inter-Layer 접착층 및 상기 Inter-Layer 접착층에 접한 열접착층으로 이루어진다. That is, in the stretched coextruded film having a multiple adhesive layer according to the present invention comprises a base layer and an adhesive layer in contact with the base layer, the adhesive layer is an inter-layer adhesive layer and the inter-layer in contact with the base layer It consists of a thermal adhesive layer in contact with the adhesive layer.
또한 본 발명에 따른 연신 공압출 필름은 상기 기재층의 상기 접착층이 접하는 면의 반대 면에 표면층을 기재층에 접하도록 추가로 포함할 수 있다. In addition, the stretched coextrusion film according to the present invention may further include a surface layer on the opposite side of the surface contacting the adhesive layer of the substrate layer in contact with the substrate layer.
상기 Inter-Layer 접착층 및 열접착층은 각각 단일층으로 이루어질 수 있으며, 설계에 따라서는 각각 다중층으로 이루어질 수도 있다. 마찬가지로 상기 기재층 및 표면층 역시 각각 단일층 또는 다중층으로 이루어질 수 있다. The inter-layer adhesive layer and the thermal adhesive layer may be formed of a single layer, respectively, or may be formed of multiple layers, respectively, depending on the design. Likewise, the base layer and the surface layer may be made of a single layer or multiple layers, respectively.
상기 기재층 및 표면층을 형성하는 수지는 통상의 연신 공압출 필름의 제조에 이용되는 수지, 즉 폴리프로필렌 등의 통상의 폴리올레핀 수지가 사용될 수 있으므로 이의 상세한 설명은 생략한다.The resin forming the base layer and the surface layer may be a resin used for the production of a conventional stretched coextrusion film, that is, a conventional polyolefin resin such as polypropylene, and thus its detailed description is omitted.
상기 Inter-Layer 접착층은 올레핀 공중합체 또는 올레핀과 불포화카르본산 또는 불포화카르본산 무수물과의 공중합체이면서 시차주사열량계(DSC)로 측정한 녹는점(Tm)이 90 내지 150℃인 수지로 이루어지고, 상기 열접착층은 올레핀 공중합체 또는 올레핀과 불포화카르본산 또는 불포화카르본산 무수물과의 공중합체이면서 시차주사열량계(DSC)로 측정한 녹는점(Tm)이 70 내지 130℃인 수지로 이루어지는 것이 바람직하다. The inter-layer adhesive layer is an olefin copolymer or a copolymer of an olefin and an unsaturated carboxylic acid or an unsaturated carboxylic anhydride, and is made of a resin having a melting point (T m ) measured by a differential scanning calorimeter (DSC) of 90 to 150 ° C. The heat-adhesive layer is preferably an olefin copolymer or a copolymer of olefins with unsaturated carboxylic acids or unsaturated carboxylic anhydrides and has a melting point (T m ) measured by differential scanning calorimetry (DSC) of 70 to 130 ° C. Do.
본 발명에 있어서 기재층은 Inter-Layer 접착층과 제조과정에서 서로 접착되고, Inter-Layer 접착층은 열접착층과 제조과정에서 서로 접착된다. 즉, Inter-Layer 접착층은 기재층과 열접착층의 중간에 위치하여 각각을 견고하게 접착되게끔 하여 종래의 기재층과 접착층의 접착력이 미흡하여 발생하던 문제점을 해결할 수 있게끔 하여 준다. In the present invention, the base layer is bonded to each other in the manufacturing process and the inter-layer adhesive layer, the inter-layer adhesive layer is bonded to each other in the manufacturing process. That is, the inter-layer adhesive layer is positioned in the middle of the base layer and the heat adhesive layer so that each can be firmly bonded, thereby solving the problem caused by the insufficient adhesion between the conventional base layer and the adhesive layer.
이를 좀더 자세히 설명하면 기재층으로 주로 사용하는 폴리올레핀 수지는 폴리프로필렌이며, 이의 녹는점은 160℃ 이상이다. 종래의 단일 접착층은 약 50 내지 110℃의 녹는점을 가진 수지를 활용하였다. 상기와 같은 녹는점을 가진 기재층의 수지와 접착층의 수지를 공압출하여 필름을 제조하는 경우 제조의 기준온도는 녹는점이 높은 수지를 기준으로 하여 설정하게 된다. 따라서 녹는점이 낮은 종래의 단일 접착층을 이루는 수지는 과도한 유동성을 보이게 되며, 이로 인하여 두께 불균일이 발생하게 된다. 또한 기재층과 접착층의 층간 접착력이 부족하게 되어 접착층이 기재층으로부터 이탈하여, 성형롤을 오염시키는 문제가 발생하게 된다.In more detail, the polyolefin resin mainly used as the base layer is polypropylene, and its melting point is 160 ° C. or higher. Conventional single adhesive layer utilizes a resin having a melting point of about 50 to 110 ℃. When the film is manufactured by co-extrusion of the resin of the base layer with the melting point and the resin of the adhesive layer as described above, the reference temperature of manufacturing is set based on the resin having a high melting point. Therefore, the resin forming the conventional single adhesive layer having a low melting point shows excessive fluidity, resulting in thickness unevenness. In addition, the adhesion between the substrate layer and the adhesive layer is insufficient, the adhesive layer is separated from the substrate layer, causing a problem of contaminating the forming roll.
상기와 같은 문제를 해결하기 위하여 본 발명은 접착층을 Inter-Layer 접착층과 열접착층으로 이원화하여 구성한다. 이때 상기 Inter-Layer 접착층을 이루는 수지의 녹는점은 상기 기재층을 이루는 수지의 녹는점보다 낮고, 상기 열접착층을 이루는 수지의 녹는점은 상기 Inter-Layer 접착층을 이루는 수지의 녹는점보다 낮게끔 구성한다. 즉, 기재층과 접착층 간에 과도한 녹는점의 차이가 발생했던 종래와 달리 중간에 완충층인 Inter-Layer 접착층을 두어 기재층과 Inter-Layer 접착층, Inter-Layer 접착층과 열접착층의 접착력을 높이게 된다. In order to solve the above problems, the present invention is configured by dualizing the adhesive layer into an inter-layer adhesive layer and a thermal adhesive layer. The melting point of the resin constituting the inter-layer adhesive layer is lower than the melting point of the resin constituting the base layer, and the melting point of the resin constituting the thermal adhesive layer is lower than the melting point of the resin constituting the inter-layer adhesive layer. do. That is, unlike the conventional melting point of the difference between the base layer and the adhesive layer, the inter-layer adhesive layer as a buffer layer in the middle to increase the adhesive strength of the base layer, the inter-layer adhesive layer, the inter-layer adhesive layer and the thermal adhesive layer.
상기 Inter-Layer 접착층은 녹는점이 90 내지 150℃인 수지로 이루어지며, 상기 열접착층은 녹는점이 70 내지 130℃인 수지로 이루어지는데, Inter-Layer 접착층과 열접착층을 이루는 수지의 녹는점이 상기 범위내에서 선택될 때, 열접착층을 이루는 수지의 녹는점이 항상 Inter-Layer 접착층을 이루는 수지의 녹는점보다 낮게 된다. Inter-Layer 접착층의 녹는점이 상기 온도 범위를 벗어날 경우에는 완충 역할을 하기 위하여 Inter-Layer 접착층을 도입한 본 발명 특유의 효과를 달성하지 못할 우려가 있어 바람직하지 않고, 열접착층의 녹는점이 상기 하한치 미만일 경우에는 층간 접착력의 부족 및 성형 롤을 오염시키는 종래와 같은 문제점이 발생할 우려가 있어 바람직하지 않고, 열접착층의 녹는점이 상기 상한치를 초과할 경우에는 접착 대상물과의 접착력이 낮아질 우려가 있어 바람직하지 않다. The inter-layer adhesive layer is made of a resin having a melting point of 90 to 150 ℃, the heat adhesive layer is made of a resin having a melting point of 70 to 130 ℃, the melting point of the resin forming the inter-layer adhesive layer and the heat adhesive layer within the above range. When selected, the melting point of the resin constituting the thermal adhesive layer is always lower than the melting point of the resin constituting the inter-layer adhesive layer. If the melting point of the inter-layer adhesive layer is out of the above temperature range, there is a possibility that it may not achieve the effects of the present invention incorporating the inter-layer adhesive layer in order to act as a buffer, it is not preferable, the melting point of the thermal adhesive layer is less than the lower limit. In this case, there is a possibility that a problem such as a conventional lack of interlayer adhesion and contamination of the forming roll may occur. If the melting point of the heat-adhesive layer exceeds the upper limit, the adhesion to the object to be bonded may be lowered, which is not preferable. .
열접착층의 녹는점은 접착 대상물과의 접착력만을 고려할 때는 낮은 것이 유리하다. 단일 접착층만을 사용하는 종래의 경우 접착력만을 고려하여 기재층 대비 녹는점이 과도하게 낮은 수지를 사용함으로써 상술한 두께 불균일, 성형 롤의 오염 등의 문제가 발생하였다. 본 발명은 완충 역할을 하기 위한 Inter-Layer 접착층을 두어, 두께 불균일 및 롤의 오염 등의 문제가 발생하지 않으면서도 접착 대상물과 접착되는 열접착층을 녹는점이 낮은 수지를 사용할 수 있게 됨으로써, 접착 대상물과의 접착력을 높일 수 있게 된다. The melting point of the heat adhesive layer is advantageously low when only considering the adhesive force with the object to be bonded. In the conventional case of using only a single adhesive layer, the above-described thickness nonuniformity, contamination of the molding roll, and the like have arisen by using a resin having an excessively low melting point compared to the base layer in consideration of only the adhesive force. The present invention has an inter-layer adhesive layer for a buffering role, so that it is possible to use a resin having a low melting point of the thermal adhesive layer bonded to the adhesive object without problems such as thickness unevenness and roll contamination. It is possible to increase the adhesion of.
상기 Inter-Layer 접착층과 열접착층의 녹는점의 온도는 Inter-Layer 접착층과 열접착층의 다중 접착층을 도입하면서 본 발명의 발명자들이 반복된 연구 끝에 얻은 최적의 범위이다. The temperature of the melting point of the inter-layer adhesive layer and the thermal adhesive layer is an optimal range obtained by the inventors of the present invention after repeated studies while introducing the multiple adhesive layers of the inter-layer adhesive layer and the thermal adhesive layer.
상기 올레핀은 올레핀 중 어느 것을 사용하여도 무방하나, 반복된 실험결과 α-올레핀을 사용하는 것이 보다 우수한 효과를 나타냄을 확인할 수 있었다. 상기 α-올레핀의 예를 들어보면 에틸렌, 프로필렌, 1-부텐, 1-펜텐, 1-핵센, 1-메틸-1-펜텐, 1-핵센, 1-옥텐, 1-데센 및 이들의 혼합물로 이루어지는 군으로부터 선택될 수 있다. The olefin may be any one of the olefins, but repeated experiments showed that the use of the α-olefin shows a better effect. Examples of the α-olefins include ethylene, propylene, 1-butene, 1-pentene, 1-nuxene, 1-methyl-1-pentene, 1-nuxene, 1-octene, 1-decene and mixtures thereof It can be selected from the group.
또한 상기 불포화카르본산은 아크릴산(Acrylic Acid), 메타트릴산(Methacrylic Acid), 비닐초산(vinyl Acetic Acid), 초산비닐(Vinyl Acetate), 메틸-아크릴산(Methyl-acrylic Acid), 에틸-아크릴산(Ethyl-acrylic Acid), 부틸-아크릴산(Buthyl-acrylic Acid), 메틸-메타크릴산(Methyl Methacrylic Acid), 에틸-메타크릴산(Ethyl Methacrylic Acid) 및 이들의 혼합물로 이루어지는 군으로부터 선택될 수 있다. In addition, the unsaturated carboxylic acid is acrylic acid (Acrylic Acid), methacrylic acid (Methacrylic Acid), vinyl acetate (vinyl Acetic Acid), vinyl acetate (Vinyl Acetate), methyl-acrylic acid (Methyl-acrylic Acid), ethyl-acrylic acid (Ethyl -acrylic acid, butyl-acrylic acid, methyl-methacrylic acid, ethyl-methacrylic acid, and mixtures thereof.
또한 상기 기재층, Inter-Layer 접착층, 열접착층 및 표면층을 이루는 수지에는 산화방지제, 겔생성 방지제, 자외선흡수제, 대전방지제, 활제, 안티블로킹제, 충격보강제, 충진제 및 가소제로 이루어지는 군으로부터 선택되는 첨가제가 1종 이상 더 포함될 수 있으며, 이러한 첨가제의 사용은 본 발명이 속하는 기술분야에서 일반적인 기술이므로 이의 상세한 설명은 생략한다.
In addition, the resin comprising the base layer, the inter-layer adhesive layer, the heat adhesive layer and the surface layer may be an additive selected from the group consisting of antioxidants, gel forming agents, ultraviolet absorbers, antistatic agents, lubricants, antiblocking agents, impact modifiers, fillers and plasticizers. One or more may be further included, and the use of such additives is a general technique in the art to which the present invention pertains, and a detailed description thereof will be omitted.
이하, 실시예를 통하여 본 발명을 더욱 상세히 설명한다.
Hereinafter, the present invention will be described in more detail by way of examples.
실시예Example : 이중 접착층을 갖는 : Having a double adhesive layer 연신Stretching 공압출Coextrusion 필름의 제조 Production of film
표면층, 기재층, Inter-Layer 접착층, 열접착층으로 이루어진 연신 공압출 필름을 제조하였다. 각 층을 구성하기 위하여 사용하는 수지의 단량체 성분 및 함량, 녹는점, 용융지수를 하기의 표 1에 나타내었다. 녹는점은 시차주사열량계(DSC, 10℃/min)를 이용하여 측정하였으며, 용융지수는 ASTM D 1238에 따라 측정하였다. The stretched coextrusion film which consists of a surface layer, a base material layer, an Inter-Layer adhesive layer, and a thermal bonding layer was produced. The monomer component and content, melting point, and melt index of the resin used to compose each layer are shown in Table 1 below. Melting point was measured using a differential scanning calorimeter (DSC, 10 ℃ / min), the melt index was measured according to ASTM D 1238.
하기 표 1에 나타낸 것과 같은 수지를 각각 압출기로 용융시키고, 240℃의 T 다이로 공압출 시킨 후, 냉각롤로 공압출된 필름을 급냉시켰다. Resin as shown in Table 1 below was melted with an extruder, respectively, and co-extruded with a T die at 240 ° C., followed by quenching the co-extruded film with a chill roll.
냉각된 필름을 예열한 후, 기계방향으로 5배, 폭 방향으로 9배 연신을 하여 이축 연신된 필름을 제조하였다. After preheating the cooled film, stretching was performed 5 times in the machine direction and 9 times in the width direction to prepare a biaxially stretched film.
필름의 층별 두께는 표면층 1㎛, 기재층 13㎛, Inter-Layer 접착층 3㎛, 열접착층 3㎛ 이었으며, 도 1은 실시예 1에 의한 수지를 사용하여 제조한 연신 공압출 필름의 샘플이다.
The thickness of each layer of the film was 1 μm of the surface layer, 13 μm of the base layer, 3 μm of the Inter-Layer adhesive layer, and 3 μm of the thermal adhesive layer. FIG. 1 is a sample of a stretched coextruded film prepared using the resin according to Example 1. FIG.
[표 1][Table 1]
비교예Comparative Example : 단일 접착층을 갖는 : Having a single adhesive layer 연신Stretching 공압출Coextrusion 필름의 제조 Production of film
표면층, 기재층, 접착층으로 이루어진 연신 공압출 필름을 제조하였다. 각 층을 구성하기 위하여 사용하는 수지의 단량체 성분 및 함량, 녹는점, 용융지수를 하기의 표 2에 나타내었다. 녹는점은 시차주사열량계(DSC, 10℃/min)를 이용하여 측정하였으며, 용융지수는 ASTM D 1238에 따라 측정하였다. 제조과정은 상기 실시예와 동일하였으며, 필름의 층별 두께는 표면층 1㎛, 기재층 13㎛, 접착층 6㎛ 이었다.
The stretched coextrusion film which consists of a surface layer, a base material layer, and an adhesive layer was produced. The monomer component and content, melting point, and melt index of the resin used to compose each layer are shown in Table 2 below. Melting point was measured using a differential scanning calorimeter (DSC, 10 ℃ / min), the melt index was measured according to ASTM D 1238. The manufacturing process was the same as the above embodiment, and the thickness of each layer of the film was 1 μm of the surface layer, 13 μm of the base layer, and 6 μm of the adhesive layer.
[표 2][Table 2]
접착력 및 가공성 테스트Adhesion and Machinability Test
상기 실시예 및 비교예에 의하여 제조된 연신 공압출 필름을 종이와 열 접착하고 이의 성능을 확인하여 하기의 표 3에 나타내었다.
The stretched co-extruded film prepared by the above Examples and Comparative Examples was heat-bonded with paper and the performance thereof was shown in Table 3 below.
[표 3][Table 3]
상기 표 3의 결과에서 알 수 있듯이 본 발명의 실시예에 의하여 제조된 연신 공압출 필름은 모두 접착 대상물인 종이와의 열접착력이 우수하면서도, 롤 오염, 접착층의 탈착이 발생하지 않았으나, 비교예에 의하여 제조된 연신 공압출 필름의 경우 종이와의 접착력이 약하거나 롤 오염, 접착층의 탈착이 발생함을 확인할 수 있었다.
As can be seen from the results of Table 3, all of the stretched coextrusion films prepared by the examples of the present invention have excellent thermal adhesive strength with paper, which is an object to be bonded, but roll contamination and desorption of the adhesive layer did not occur. In the case of the prepared co-extruded film, the adhesion to paper was weak or roll contamination, it was confirmed that the desorption of the adhesive layer occurs.
본 발명은 상기한 실시예를 참조하여 설명되었지만, 본 발명의 개념 및 범위 내에서 상이한 실시예를 구성할 수도 있다. 따라서 본 발명의 범위는 첨부된 청구범위 및 이와 균등한 것들에 의해 정해지며, 본 명세서에 기재된 특정 실시예에 의해 한정되지는 않는다.Although the present invention has been described with reference to the above-described embodiments, different embodiments may be configured within the spirit and scope of the present invention. Therefore, the scope of the present invention is defined by the appended claims and equivalents thereof, and is not limited by the specific embodiments described herein.
Claims (10)
상기 접착층은 상기 기재층에 접한 한층 이상의 Inter-Layer 접착층 및 상기 Inter-Layer 접착층에 접한 한층 이상의 열접착층으로 이루어지며,
상기 Inter-Layer 접착층은 올레핀 공중합체 또는 올레핀과 불포화카르본산 또는 불포화카르본산 무수물과의 공중합체이면서 녹는점(Tm)이 90 내지 150℃인 수지로 이루어지고,
상기 열접착층은 올레핀 공중합체 또는 올레핀과 불포화카르본산 또는 불포화카르본산 무수물과의 공중합체이면서 녹는점(Tm)이 70 내지 130℃인 수지로 이루어지지며,
상기 Inter-Layer 접착층을 이루는 수지의 녹는점은 상기 기재층을 이루는 수지의 녹는점보다 낮고, 상기 열접착층을 이루는 수지의 녹는점은 상기 Inter-Layer 접착층을 이루는 수지의 녹는점보다 낮은 것을 특징으로 하는 다중 접착층을 갖는 연신 공압출 필름.
In the stretched coextrusion film containing a base material layer and the contact bonding layer in contact with a base material layer,
The adhesive layer is composed of at least one inter-layer adhesive layer in contact with the base layer and at least one thermal adhesive layer in contact with the inter-layer adhesive layer,
The inter-layer adhesive layer is made of an olefin copolymer or a copolymer of olefin and unsaturated carboxylic acid or unsaturated carboxylic anhydride and having a melting point (T m ) of 90 to 150 ° C.,
The heat adhesive layer is an olefin copolymer or a copolymer of olefin and unsaturated carboxylic acid or unsaturated carboxylic anhydride and is made of a resin having a melting point (T m ) of 70 to 130 ° C.,
The melting point of the resin constituting the inter-layer adhesive layer is lower than the melting point of the resin constituting the base layer, and the melting point of the resin constituting the thermal adhesive layer is lower than the melting point of the resin constituting the inter-layer adhesive layer. Stretched coextrusion film having multiple adhesive layers.
상기 올레핀은 α-올레핀인 것을 특징으로 하는 다중 접착층을 갖는 연신 공압출 필름.
The method of claim 1,
The olefin is an olefin co-extruded film having a multiple adhesive layer, characterized in that.
상기 α-올레핀은 에틸렌, 프로필렌, 1-부텐, 1-펜텐, 1-핵센, 1-메틸-1-펜텐, 1-핵센, 1-옥텐, 1-데센 및 이들의 혼합물로 이루어지는 군으로부터 선택되는 것을 특징으로 하는 다중 접착층을 갖는 연신 공압출 필름.
5. The method of claim 4,
The α-olefin is selected from the group consisting of ethylene, propylene, 1-butene, 1-pentene, 1-nuxene, 1-methyl-1-pentene, 1-nuxene, 1-octene, 1-decene and mixtures thereof Stretched coextrusion film having multiple adhesive layers, characterized in that.
상기 불포화카르본산은 아크릴산(Acrylic Acid), 메타트릴산(Methacrylic Acid), 비닐초산(vinyl Acetic Acid), 초산비닐(Vinyl Acetate), 메틸-아크릴산(Methyl-acrylic Acid), 에틸-아크릴산(Ethyl-acrylic Acid), 부틸-아크릴산(Buthyl-acrylic Acid), 메틸-메타크릴산(Methyl Methacrylic Acid), 에틸-메타크릴산(Ethyl Methacrylic Acid) 및 이들의 혼합물로 이루어지는 군으로부터 선택되는 것을 특징으로 하는 다중 접착층을 갖는 연신 공압출 필름.
The method of claim 1,
The unsaturated carboxylic acid is acrylic acid (Acrylic Acid), methacrylic acid (Methacrylic Acid), vinyl acetate (vinyl Acetic Acid), vinyl acetate (Vinyl Acetate), methyl-acrylic acid (Methyl-acrylic Acid), ethyl-acrylic acid (Ethyl- acrylic acid, butyl-acrylic acid, methyl-methacrylic acid (Methyl Methacrylic Acid), ethyl-methacrylic acid (Ethyl Methacrylic Acid), and a mixture thereof. Stretched coextrusion film having an adhesive layer.
상기 기재층의 상기 접착층이 접하는 면의 반대 면에는 표면층이 추가로 기재층에 접하여 형성되는 것을 특징으로 하는 다중 접착층을 갖는 연신 공압출 필름.
The method of claim 1,
Stretched co-extrusion film having a multiple adhesive layer, characterized in that the surface layer is further formed in contact with the substrate layer on the opposite side of the surface of the substrate layer in contact with the adhesive layer.
상기 기재층, Inter-Layer 접착층, 열접착층 및 표면층을 이루는 수지에는 산화방지제, 겔생성 방지제, 자외선흡수제, 대전방지제, 활제, 안티블로킹제, 충격보강제, 충진제 및 가소제로 이루어지는 군으로부터 선택되는 첨가제가 1종 이상 더 포함되는 것을 특징으로 하는 다중 접착층을 갖는 연신 공압출 필름.
The method according to any one of claims 1 or 4 to 7, wherein
The resin constituting the base layer, the inter-layer adhesive layer, the heat adhesive layer, and the surface layer includes an additive selected from the group consisting of antioxidants, gel forming agents, ultraviolet absorbers, antistatic agents, lubricants, antiblocking agents, impact modifiers, fillers, and plasticizers. Stretched coextrusion film having a multiple adhesive layer, characterized in that it further comprises at least one kind.
상기 접착층은 상기 기재층에 접한 한층 이상의 Inter-Layer 접착층 및 상기 Inter-Layer 접착층에 접한 한층 이상의 열접착층으로 이루어지며,
상기 Inter-Layer 접착층과 상기 열접착층은 올레핀 공중합체 또는 올레핀과 불포화카르본산 또는 불포화카르본산 무수물과의 공중합체로 이루어지고,
상기 열접착층을 이루는 수지의 녹는점은 상기 Inter-Layer 접착층을 이루는 수지의 녹는점보다 낮은 것을 특징으로 하는 다중 접착층을 갖는 연신 공압출 필름.
In the stretched coextrusion film containing a base material layer and the contact bonding layer in contact with a base material layer,
The adhesive layer is composed of at least one inter-layer adhesive layer in contact with the base layer and at least one thermal adhesive layer in contact with the inter-layer adhesive layer,
The inter-layer adhesive layer and the thermal adhesive layer is made of an olefin copolymer or a copolymer of olefin and unsaturated carboxylic acid or unsaturated carboxylic anhydride,
Melting point of the resin constituting the heat-adhesive layer is lower than the melting point of the resin constituting the Inter-Layer adhesive layer stretched coextrusion film having a multiple adhesive layer.
상기 Inter-Layer 접착층을 이루는 수지의 녹는점(Tm)은 90 내지 150℃이고,
상기 열접착층을 이루는 수지의 녹는점(Tm)은 70 내지 130℃인 것을 특징으로 하는 다중 접착층을 갖는 연신 공압출 필름.The method of claim 9, wherein
Melting point (T m ) of the resin constituting the Inter-Layer adhesive layer is 90 to 150 ℃,
Melting point (T m ) of the resin constituting the thermal adhesive layer is a stretched co-extruded film having a multiple adhesive layer, characterized in that 70 to 130 ℃.
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| JP3098731B2 (en) | 1997-08-27 | 2000-10-16 | 三菱化学株式会社 | Laminated film |
| KR100531256B1 (en) * | 2002-11-26 | 2005-11-28 | 주식회사 필맥스 | A oriented polypropylene film by coextrusion |
| KR100656264B1 (en) * | 2006-01-12 | 2006-12-11 | 대림산업 주식회사 | Polyolefin resin composition and film |
| JP2008074028A (en) * | 2006-09-22 | 2008-04-03 | Du Pont Mitsui Polychem Co Ltd | Laminated body |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20130013872A (en) | 2013-02-06 |
| CN103747954A (en) | 2014-04-23 |
| WO2013019038A3 (en) | 2013-07-11 |
| WO2013019038A9 (en) | 2013-05-23 |
| WO2013019038A2 (en) | 2013-02-07 |
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