KR100660147B1 - Shrink film - Google Patents
Shrink film Download PDFInfo
- Publication number
- KR100660147B1 KR100660147B1 KR1020050033838A KR20050033838A KR100660147B1 KR 100660147 B1 KR100660147 B1 KR 100660147B1 KR 1020050033838 A KR1020050033838 A KR 1020050033838A KR 20050033838 A KR20050033838 A KR 20050033838A KR 100660147 B1 KR100660147 B1 KR 100660147B1
- Authority
- KR
- South Korea
- Prior art keywords
- shrink film
- tinuvin
- hydrotalcite
- weight
- blocking
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- 229920006300 shrink film Polymers 0.000 title claims abstract description 22
- GDVKFRBCXAPAQJ-UHFFFAOYSA-A dialuminum;hexamagnesium;carbonate;hexadecahydroxide Chemical compound [OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Al+3].[Al+3].[O-]C([O-])=O GDVKFRBCXAPAQJ-UHFFFAOYSA-A 0.000 claims abstract description 19
- 229960001545 hydrotalcite Drugs 0.000 claims abstract description 19
- 229910001701 hydrotalcite Inorganic materials 0.000 claims abstract description 19
- -1 polyethylene Polymers 0.000 claims abstract description 13
- 239000004698 Polyethylene Substances 0.000 claims abstract description 9
- 229920000573 polyethylene Polymers 0.000 claims abstract description 9
- 239000011347 resin Substances 0.000 claims abstract description 9
- 229920005989 resin Polymers 0.000 claims abstract description 9
- QRUDEWIWKLJBPS-UHFFFAOYSA-N benzotriazole Chemical compound C1=CC=C2N[N][N]C2=C1 QRUDEWIWKLJBPS-UHFFFAOYSA-N 0.000 claims abstract description 5
- 239000012964 benzotriazole Substances 0.000 claims abstract description 5
- 239000004677 Nylon Substances 0.000 claims abstract description 4
- 239000004743 Polypropylene Substances 0.000 claims abstract description 4
- 239000012963 UV stabilizer Substances 0.000 claims abstract description 4
- 229920001778 nylon Polymers 0.000 claims abstract description 4
- 229920001155 polypropylene Polymers 0.000 claims abstract description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 30
- UWSMKYBKUPAEJQ-UHFFFAOYSA-N 5-Chloro-2-(3,5-di-tert-butyl-2-hydroxyphenyl)-2H-benzotriazole Chemical group CC(C)(C)C1=CC(C(C)(C)C)=CC(N2N=C3C=C(Cl)C=CC3=N2)=C1O UWSMKYBKUPAEJQ-UHFFFAOYSA-N 0.000 claims description 16
- 239000000377 silicon dioxide Substances 0.000 claims description 15
- 229910021536 Zeolite Inorganic materials 0.000 claims description 12
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 claims description 12
- 239000010457 zeolite Substances 0.000 claims description 12
- 229920001684 low density polyethylene Polymers 0.000 claims description 7
- 239000004702 low-density polyethylene Substances 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 7
- 229920010126 Linear Low Density Polyethylene (LLDPE) Polymers 0.000 claims description 2
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 claims 1
- 239000000326 ultraviolet stabilizing agent Substances 0.000 claims 1
- 230000000903 blocking effect Effects 0.000 abstract description 24
- 239000000654 additive Substances 0.000 description 15
- 230000000052 comparative effect Effects 0.000 description 13
- OCWYEMOEOGEQAN-UHFFFAOYSA-N bumetrizole Chemical compound CC(C)(C)C1=CC(C)=CC(N2N=C3C=C(Cl)C=CC3=N2)=C1O OCWYEMOEOGEQAN-UHFFFAOYSA-N 0.000 description 10
- 238000002474 experimental method Methods 0.000 description 9
- 230000000996 additive effect Effects 0.000 description 6
- 235000013305 food Nutrition 0.000 description 5
- 235000013361 beverage Nutrition 0.000 description 3
- 230000008014 freezing Effects 0.000 description 3
- 238000007710 freezing Methods 0.000 description 3
- 230000000475 sunscreen effect Effects 0.000 description 3
- 239000000516 sunscreening agent Substances 0.000 description 3
- 230000006866 deterioration Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 235000015203 fruit juice Nutrition 0.000 description 1
- ZZUFCTLCJUWOSV-UHFFFAOYSA-N furosemide Chemical compound C1=C(Cl)C(S(=O)(=O)N)=CC(C(O)=O)=C1NCC1=CC=CO1 ZZUFCTLCJUWOSV-UHFFFAOYSA-N 0.000 description 1
- 229920000092 linear low density polyethylene Polymers 0.000 description 1
- 239000004707 linear low-density polyethylene Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 235000021586 packaging of beverage Nutrition 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
- E06B9/24—Screens or other constructions affording protection against light, especially against sunshine; Similar screens for privacy or appearance; Slat blinds
- E06B9/26—Lamellar or like blinds, e.g. venetian blinds
- E06B9/266—Devices or accessories for making or mounting lamellar blinds or parts thereof
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
- E06B9/24—Screens or other constructions affording protection against light, especially against sunshine; Similar screens for privacy or appearance; Slat blinds
- E06B9/26—Lamellar or like blinds, e.g. venetian blinds
- E06B9/38—Other details
- E06B9/386—Details of lamellae
Landscapes
- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Manufacture Of Macromolecular Shaped Articles (AREA)
Abstract
본 발명은, 수축필름에 관한 것으로서, 폴리에틸렌, 폴리프로필렌, 나일론으로 이루어진 군 중에서 선택되는 적어도 하나를 포함하는 베이스 수지와, 0.01 내지 2중량%의 벤조트리아졸계 자외선 안정제와, 0.01 내지 10중량%의 하이드로탈사이트(hydrotalcite)를 포함하는 것을 특징으로 한다. 이에 의해 자외선과 근적외선 차단 효과가 우수한 수축필름이 제공된다.The present invention relates to a shrink film, a base resin comprising at least one selected from the group consisting of polyethylene, polypropylene, nylon, 0.01 to 2% by weight of a benzotriazole-based UV stabilizer, 0.01 to 10% by weight of It is characterized in that it comprises a hydrotalcite. As a result, a shrink film excellent in blocking ultraviolet rays and near infrared rays is provided.
Description
본 발명은, 수축필름에 관한 것으로서, 보다 상세하게는, 자외선과 근적외선 차단성능이 우수한 수축필름에 관한 것이다.The present invention relates to a shrink film, and more particularly, to a shrink film excellent in UV and near-infrared blocking performance.
최근, 음료수의 포장에 PET용기가 많이 사용된다. 음료수 용기로 PET재질의 용기가 많이 사용되는 이유는 강도와 투명성이 좋고 표면에의 인쇄성이 우수하기 때문이다. Recently, PET containers are often used for the packaging of beverages. PET containers are often used as beverage containers because they have high strength and transparency and good printability on the surface.
공장에서 생산된 음료수는 PET용기에 봉입된 후, 상부가 개방된 종이나 플라스틱 박스 속에 다수개씩 포장된다. 종이박스의 개방된 상부는 통상 저밀도 폴리에틸렌(LDPE)으로 된 수축필름으로 덮어 씌어 포장한 후 운송하여 각 판매상에게 공급된다.The beverages produced at the factory are encapsulated in PET containers and then packaged in large quantities in paper or plastic boxes with the top open. The open top of the paper box is usually covered with a shrink film of low density polyethylene (LDPE), packaged, transported and supplied to each dealer.
그러나 PET용기의 경우 알루미늄 등의 금속캔과 달리 햇빛을 쬐면, 자외선이 투명한 용기 벽을 투과하여 음료의 색깔이나 향이 변하게 될 우려가 있다. 또한 여러 단계의 중간상인을 거치게 되면서 박스의 운송이 이루어지기 때문에 불가피하게 박스를 야적하게 되는 경우도 있게 되어 자외선 노출문제가 심각해진다. 특히 과일 쥬스의 경우 자외선에 의해 변질될 우려가 크므로 주의하여야 한다. However, in the case of PET containers, unlike metal cans such as aluminum, when sunlight is exposed, ultraviolet rays penetrate the transparent container walls, which may change the color or aroma of the beverage. In addition, as the transportation of the box is carried out through several stages of intermediaries, the box is inevitably piled up, which causes serious UV exposure problems. In particular, fruit juices are susceptible to deterioration by ultraviolet light, so be careful.
자외선은 397nm 내지 10nm의 파장을 가지는데, 이 중 음식류 또는 음료수의 맛을 변질시키는 파장은 대략 360nm 내지 380nm이다.Ultraviolet rays have a wavelength of 397 nm to 10 nm, of which the wavelength of altering the taste of food or drink is approximately 360 nm to 380 nm.
한편 파장이 700nm 내지 1000nm 정도인 근적외선은 용기 내 식품을 온도를 상승시켜 식품의 신선도를 저하시키는 요인이 된다.On the other hand, near infrared rays having a wavelength of about 700 nm to 1000 nm may increase the temperature of the food in the container to reduce the freshness of the food.
이와 같은 자외선과 근적외선을 차단하고자 자외선 차단제가 많이 적용되고 있다. 그러나 종래의 자외선 차단제는 근적외선은 효과적으로 차단하지 못하는 문제가 있다.In order to block such ultraviolet rays and near infrared rays, a lot of sunscreens are applied. However, the conventional sunscreen has a problem that does not effectively block the near infrared.
따라서 본 발명의 목적은, 자외선과 근적외선 모두를 효과적으로 차단하는 수축필름을 제공하는 것이다.Accordingly, an object of the present invention is to provide a shrink film that effectively blocks both ultraviolet rays and near infrared rays.
상기 목적은, 본 발명에 따라, 폴리에틸렌, 폴리프로필렌, 나일론으로 이루어진 군 중에서 선택되는 적어도 하나를 포함하는 베이스 수지와, 0.01 내지 2중량%의 벤조트리아졸계 자외선 안정제와, 0.01 내지 10중량%의 하이드로탈사이트(hydrotalcite)를 포함하는 수축필름에 의하여 달성될 수 있다.The object is, according to the present invention, a base resin comprising at least one selected from the group consisting of polyethylene, polypropylene, nylon, 0.01 to 2% by weight of a benzotriazole-based UV stabilizer, 0.01 to 10% by weight of hydro It can be achieved by a shrink film comprising hydrotalcite.
상기 벤조트리아졸계 자외선 안정제는 2(3′,5′-디-t-부틸-2′-하이드록시페닐)-5-클로로벤조트리아졸과 2(3′-t-부틸-2′-하이드록시-5-메틸페닐)-5-클로로벤조트리아졸 중 적어도 어느 하나를 포함하는 것이 바람직하다.The benzotriazole UV stabilizer is 2 (3 ′, 5′-di-t-butyl-2′-hydroxyphenyl) -5-chlorobenzotriazole and 2 (3′-t-butyl-2′-hydroxy It is preferred to include at least any one of -5-methylphenyl) -5-chlorobenzotriazole.
수축필름은 0.1 내지 10중량%의 제올라이트를 더 포함하는 것이 바람직하다.The shrink film preferably further comprises 0.1 to 10% by weight of zeolite.
수축필름은 0.1 내지 10중량%의 실리카를 더 포함하는 것이 바람직하다.The shrink film preferably further comprises 0.1 to 10% by weight of silica.
상기 베이스 필름은 선형 폴리에틸렌과 선형 저밀도폴리에틸렌을 포함하여 이루어진 것이 바람직하다.The base film is preferably made of linear polyethylene and linear low density polyethylene.
수축필름은 수지를 가열 연신하여 배향필름을 제조하고 연화점 이상의 온도로 재가열하여 수지필름에 내재하는 응력을 완화시킨 것으로, 필름의 수축특성을 이용하여 물품을 견고하게 포장하는데 사용된다.Shrink films are heat-stretched resin to produce an orientation film and reheated to a temperature above the softening point to relieve the stress inherent in the resin film, it is used to firmly package the article using the shrinkage characteristics of the film.
수축필름을 제조하는 방법은 통상 다음과 같다. The method for producing a shrink film is usually as follows.
베이스 수지로서 용융지수(melt index)가 0.3 내지 1사이의 저밀도 폴리에틸렌(LDPE)의 제품을 사용하여 블로운 타입(blown type)의 압출기를 이용하여 제품을 제조한다. 가공조건을 보면 가공온도는 150 내지 160℃, 필름팽창비(blow up ratio, BUR)는 1.2 내지 3이다. 필름두께는 50 내지 120㎛로 조절한다. 필름 가공시 결빙선 및 뽑힘성(draw down ratio, DDR)을 적절히 조정하여 고객이 요구하는 수축율을 맞춘다.The product is manufactured using a blown type extruder using a product of low density polyethylene (LDPE) having a melt index of 0.3 to 1 as the base resin. In terms of processing conditions, the processing temperature is 150 to 160 ° C, and the blow up ratio (BUR) is 1.2 to 3. The film thickness is adjusted to 50-120 micrometers. Adequately adjust the freezing line and draw down ratio (DDR) during film processing to match the shrinkage required by the customer.
수축필름에 있어 수축율은 매우 중요한 물성인데, 가로방향 수축율(TD)은 통상 필름팽창비에 의존하고 세로방향 수축율(MD)은 통상 뽑힘성에 의존한다. 이 밖에 수축율에 영향을 미치는 인자는 용융지수, 밀도, 성형온도, 권취속도, 결빙선 높이, 스크류 속도 등이다.Shrinkage is a very important property for shrink films, where the transverse shrinkage (TD) usually depends on the film expansion ratio and the longitudinal shrinkage (MD) usually depends on the drawability. Other factors affecting the shrinkage rate are melt index, density, forming temperature, winding speed, freezing line height and screw speed.
본발명에서 자외선과 근적외선 차단을 위해 사용하는 첨가제는 TINUVIN 326, TINUVIN 327, 하이드로탈사이트(hydrotalcite, Mg4.5Al2(OH)13CO33.5H2O, Mg4Al2(OH)12CO33H2O 등), 실리카, 제올라이트(aluminosillicate dehydrate) 등이다. In the present invention, additives used to block ultraviolet rays and near infrared rays include TINUVIN 326, TINUVIN 327, hydrotalcite, Mg 4.5 Al 2 (OH) 13 CO 3 3.5H 2 O, Mg 4 Al 2 (OH) 12 CO 3 3H 2 O, etc.), silica, aluminosillicate dehydrate, and the like.
TINUVIN 327은 시바-가이기사의 자외선 차단제로 명칭은 2(3′,5′-디-t-부틸-2′-하이드록시페닐)-5-클로로벤조트리아졸이다. 구조식은 다음과 같다.TINUVIN 327 is a sunscreen from Ciba-Geigy Corporation and is named 2 (3 ′, 5′-di-t-butyl-2′-hydroxyphenyl) -5-chlorobenzotriazole. The structural formula is as follows.
- 구조식 --Structural formula-
CAS NO.는 3864-99-1이며 분자량은 357.9이다. 외관은 분말형태이며 노란색을 띠고 있다. TINUVIN 327은 열안정성이 좋고, 휘발도가 낮으며 광안정성이 우수하다.CAS NO. Is 3864-99-1 and molecular weight is 357.9. Appearance is powdery and yellow. TINUVIN 327 has good thermal stability, low volatility and excellent light stability.
TINUVIN 326은 시바-가이기사의 자외선 차단제로 명칭은 2(3′-t-부틸-2′-하이드록시-5-메틸페닐)-5-클로로벤조트리아졸이며 구조식은 다음과 같다.TINUVIN 326 is a sunscreen of Ciba-Geigy Corporation and is named 2 (3'-t-butyl-2'-hydroxy-5-methylphenyl) -5-chlorobenzotriazole.
- 구조식 --Structural formula-
CAS NO.는 3896-11-5이며 분자량은 315.8이다. 외관은 분말형태이며 노란색을 띠고 있다. TINUVIN 326은 열안정성이 좋고, 휘발도가 낮으며 광안정성이 우수하다.CAS NO. Is 3896-11-5 and has a molecular weight of 315.8. Appearance is powdery and yellow. TINUVIN 326 has good thermal stability, low volatility and excellent light stability.
본발명의 첨가제가 적용되는 베이스 수지는 통상 폴리에틸렌이며, 이에 폴리프로필렌, 나일론 등이 추가로 포함될 수 있다. 이외에 수축필름의 성능을 향상시 키기 위한 산화방지제 등이 더 포함되기도 한다. 폴리에틸렌은 선형 폴리에틸렌과 저밀도 선형 폴리에틸렌의 혼합물인 것이 바람직하다.Base resin to which the additive of the present invention is applied is usually polyethylene, which may further include polypropylene, nylon and the like. In addition, antioxidants may be further included to improve the performance of the shrink film. The polyethylene is preferably a mixture of linear polyethylene and low density linear polyethylene.
본발명에 따른 첨가제는 TINUVIN 326과 TINUVIN 327 중 적어도 어느 하나와 하이드로탈사이트를 포함한다. TINUVIN 326과 TINUVIN 327은 혼합하여 사용될 수 있다. 또한 여기에 실리카나 제올라이트가 더 포함될 수도 있고, 실리카와 제올라이트가 모두 포함될 수도 있다. 하이드로탈사이트를 사용하지 않고 TINUVIN 326과 TINUVIN 327 중 적어도 어느 하나와 실리카나 제올라이트를 같이 사용할 수도 있다.The additive according to the present invention includes at least one of TINUVIN 326 and TINUVIN 327 and hydrotalcite. TINUVIN 326 and TINUVIN 327 can be used in combination. In addition, silica or zeolite may be further included here, and both silica and zeolite may be included. Without using hydrotalcite, at least one of TINUVIN 326 and TINUVIN 327 may be used together with silica or zeolite.
사용량은 TINUVIN 326과 TINUVIN 327은 0.01 내지 2중량%이며 혼합하여 사용되는 경우도 마찬가지이다. 하이드로탈사이트의 사용량은 0.01 내지 10중량%이고 실리카와 제올라이트의 사용량은 각각 0.1 내지 10중량%이다.The amount of TINUVIN 326 and TINUVIN 327 is 0.01 to 2% by weight, even when used in combination. Hydrotalcite is used in amounts of 0.01 to 10% by weight and silica and zeolite are used in amounts of 0.1 to 10% by weight, respectively.
이하 실험을 통해 본발명에 따른 첨가제의 효과에 대해 자세히 설명하겠다.Hereinafter will be described in detail the effect of the additive according to the present invention through the experiment.
<실험 1 - TINUVIN 327 + 하이트로탈사이트>Experiment 1-TINUVIN 327 + Hyrotalsite
첨가제로 TINUVIN 327과 하이트로탈사이트를 같이 사용한 경우의 차단효과를 비교하였다. The blocking effect of TINUVIN 327 and Hyrotalcite was used as an additive.
사용된 필름의 두께는 100㎛로 균일하게 하였다. 사용된 베이스 수지는 저밀도 폴리에틸렌(LDPE)인 BF115와 선형 저밀도 폴리에틸렌(LLDPE)인 현대석유화학의 UN314를 50%씩 블렌드하여 사용하였다The thickness of the film used was uniform to 100 μm. The base resin used was a blend of BF115, low density polyethylene (LDPE), and UN314 from Hyundai Petrochemical, linear low density polyethylene (LLDPE).
자외선 투과율 측정에는 일본 시마츠사의 UV-2100S를 사용하였다. UV-2100S manufactured by Shimadzu, Japan, was used for the ultraviolet ray transmittance measurement.
가공에 사용한 기기는 블로운 타입의 Φ50mm 압출기이고, 필름팽창비는 1.5, 뽑힘성은 6, 결빙선은 45cm였다.The apparatus used for the process was a blown-type Φ 50 mm extruder, the film expansion ratio was 1.5, the drawability was 6, and the freezing line was 45 cm.
비교예 1은 첨가제를 사용하지 않은 경우이다. 비교예 2와 비교예 3은 각각 TINUVIN과 하이드로탈사이트 만을 사용한 경우이다.Comparative Example 1 is a case where no additive is used. Comparative Example 2 and Comparative Example 3 are cases where only TINUVIN and hydrotalcite are used, respectively.
실시예 1 내지 실시예 3은 TINUVIN 327 0.4%와 하이드로탈사이트를 각각 1%, 3%, 5% 사용한 경우이다.Examples 1 to 3 used 0.4% TINUVIN 327 and 1%, 3%, and 5% hydrotalcite, respectively.
다음 표 1에 서로 다른 첨가제를 사용한 수축필름에 있어서, 파장에 따른 차단율을 나타내었다. 여기서 327은 TINUVIN 327을, HTC는 하이드로탈사이트를 나타낸다.In the following shrinkage film using different additives in Table 1, the blocking rate according to the wavelength was shown. Where 327 represents TINUVIN 327 and HTC represents hydrotalcite.
첨가제가 들어있지 않은 비교예 1의 경우 모든 파장에서 50%이하의 차단율을 나타냈으며 특히 근적외선 영역의 차단율이 매우 불량하다.Comparative Example 1, which does not contain an additive, exhibits a blocking rate of 50% or less at all wavelengths, and particularly, a blocking rate in the near infrared region is very poor.
TINUVIN 327 0.4%가 첨가된 비교예 2의 경우 자외선 영역의 차단율은 개선되었으나 근적외선 영역의 차단율은 불량하다.In Comparative Example 2 to which 0.4% of TINUVIN 327 was added, the blocking rate of the ultraviolet region was improved, but the blocking rate of the near infrared region was poor.
하이드로탈사이트 4%가 첨가된 비교예 3의 경우 비교예 1과 2에 비해 근적외선 영역의 차단은 개선되었으나 자외선 영역의 차단율이 불량하다.In Comparative Example 3 to which 4% of hydrotalcite was added, the blocking of the near infrared region was improved compared to Comparative Examples 1 and 2, but the blocking rate of the ultraviolet region was poor.
실시예 1 내지 3은 비교예 1 내지 3에 비해 자외선 영역과 근적외선 영역 모두에서 우수한 차단율을 나타낸다.Examples 1 to 3 show excellent blocking rates in both the ultraviolet region and the near infrared region as compared with Comparative Examples 1 to 3.
<실험 2 - TINUVIN 327 + 하이드로탈사이트 + 실리카>Experiment 2-TINUVIN 327 + Hydrotalcite + Silica
첨가제로 TINUVIN 327, 하이드로탈사이트 그리고 실리카를 같이 사용한 경우의 차단효과를 비교하였다. 비교예 4는 실리카만을 사용한 경우이다. The blocking effects of TINUVIN 327, hydrotalcite and silica as additives were compared. Comparative Example 4 is a case where only silica is used.
실험 1과 실험방법은 동일하며, 표 2에 그 결과를 나타내었다.Experiment 1 and the experimental method is the same, the results are shown in Table 2.
표 2. 첨가제에 따른 차단율 (단위 : %)Table 2. Blocking Rate by Additives (Unit:%)
실리카 4.5%만을 적용한 비교예 4를 보면, 하이드로탈사이트 만을 적용한 비교예 3과 같이 근적외선 영역의 차단은 양호하나 자외선 영역의 차단은 불량하다.In Comparative Example 4, in which only 4.5% of silica was applied, as in Comparative Example 3 in which only hydrotalcite was applied, the blocking of the near infrared region was good, but the blocking of the ultraviolet region was poor.
TINUVIN 327, 하이드로탈사이트 그리고 실리카를 모두 사용한 실시예 4를 보면 비교예 1 내지 4보다는 물론 실시예 1 내지 3에 비해서도 우수한 차단효과를 보여주고 있다.Example 4 using all of TINUVIN 327, hydrotalcite and silica shows excellent blocking effects as compared to Examples 1 to 3 as well as Comparative Examples 1 to 4. FIG.
<실험 3 - TINUVIN 326 + 하이드로탈사이트 + 실리카>Experiment 3-TINUVIN 326 + Hydrotalcite + Silica
첨가제로 TINUVIN 326, 하이드로탈사이트 그리고 실리카를 같이 사용한 경우의 차단효과를 비교하였다. 실험 1과 실험방법은 동일하다.The blocking effects of TINUVIN 326, hydrotalcite and silica as additives were compared. Experiment 1 and the method are the same.
표 3에 그 결과를 나타내었다. 여기서 326은 TINUVIN 326을 나타낸다.Table 3 shows the results. Where 326 represents TINUVIN 326.
표 3을 보면 TINUVIN 326, 하이드로탈사이트 그리고 실리카를 같이 사용한 실시예 5의 경우 자외선 영역과 근적외선 영역 모두에서 차단성능이 우수함을 확인할 수 있다. 그러나 실시예 5는 TINVIN 326 대신 TINUVIN 327을 사용한 실시예 4에 비하여는 근적외선 차단 성능이 떨어진다.Table 3 shows that in the case of Example 5 using TINUVIN 326, hydrotalcite and silica together, the blocking performance is excellent in both the ultraviolet region and the near infrared region. However, Example 5 is inferior in near-infrared cut off performance compared to Example 4, which uses TINUVIN 327 instead of TINVIN 326.
<실험 4 - TINUVIN 326 + 제올라이트>Experiment 4-TINUVIN 326 + Zeolite
첨가제로 TINUVIN 326, 그리고 제올라이트를 같이 사용한 경우의 차단효과를 비교하였다. 실시예 6 내지 8은 TINUVIN 326 0.4%와 제올라이트를 각각 2%, 4%, 6% 사용한 경우이다.The blocking effects of TINUVIN 326 and zeolite as additives were compared. Examples 6 to 8 used 0.4% TINUVIN 326 and 2%, 4%, and 6% zeolite, respectively.
실험 1과 실험방법은 동일하다. 표 4에 그 결과를 나타내었다.Experiment 1 and the method are the same. Table 4 shows the results.
표 4에서와 같이 제올라이트가 추가된 실시예 6 내지 8은 제올라이트를 포함하지 않은 비교예 5에 비하여 우수한 근적외선 차단 성능을 나타낸다. 또한 제올라이트의 함량이 증가할수록 근적외선 차단 성능은 개선된다.As shown in Table 4, Examples 6 to 8 to which zeolite was added show superior near-infrared ray blocking performance as compared to Comparative Example 5 without zeolite. In addition, as the zeolite content increases, near-infrared blocking performance is improved.
이상 설명한 바와 같이, 본 발명에 따르면 자외선과 근적외선 모두를 효과적으로 차단하는 수축필름이 제공된다. 본 발명에 따른 수축필름을 식품의 포장에 사용하면 식품의 변질을 감소시킬 수 있다.As described above, according to the present invention, there is provided a shrink film that effectively blocks both ultraviolet rays and near infrared rays. When the shrink film according to the present invention is used for the packaging of food, it is possible to reduce the deterioration of food.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR910004728A (en) * | 1989-08-28 | 1991-03-29 | 원본미기재 | Crystalline Polyolefin Composition |
| JPH03292344A (en) * | 1990-04-10 | 1991-12-24 | Chisso Corp | Polyolefin composition for shrinkable film |
| KR19980019045A (en) * | 1996-08-22 | 1998-06-05 | 한스-피터 위트린 | STABILIZER MIXTURES |
| KR100382589B1 (en) | 1994-06-27 | 2004-03-10 | 시바 스페셜티 케미칼스 홀딩 인크. | Polyolefin or Polyolefin Copolymer Membranes with Improved Light Stability and Insecticide Resistance |
| KR20060013418A (en) * | 2003-05-26 | 2006-02-09 | 시바 스폐셜티 케미칼스 홀딩 인코포레이티드 | Highly compatible and non-movable polymer UV absorbers |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR910004728A (en) * | 1989-08-28 | 1991-03-29 | 원본미기재 | Crystalline Polyolefin Composition |
| JPH03292344A (en) * | 1990-04-10 | 1991-12-24 | Chisso Corp | Polyolefin composition for shrinkable film |
| KR100382589B1 (en) | 1994-06-27 | 2004-03-10 | 시바 스페셜티 케미칼스 홀딩 인크. | Polyolefin or Polyolefin Copolymer Membranes with Improved Light Stability and Insecticide Resistance |
| KR19980019045A (en) * | 1996-08-22 | 1998-06-05 | 한스-피터 위트린 | STABILIZER MIXTURES |
| KR20060013418A (en) * | 2003-05-26 | 2006-02-09 | 시바 스폐셜티 케미칼스 홀딩 인코포레이티드 | Highly compatible and non-movable polymer UV absorbers |
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