KR101012167B1 - 생분해성 양방향 수축필름 및 이의 제조방법 - Google Patents
생분해성 양방향 수축필름 및 이의 제조방법 Download PDFInfo
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- KR101012167B1 KR101012167B1 KR1020080096961A KR20080096961A KR101012167B1 KR 101012167 B1 KR101012167 B1 KR 101012167B1 KR 1020080096961 A KR1020080096961 A KR 1020080096961A KR 20080096961 A KR20080096961 A KR 20080096961A KR 101012167 B1 KR101012167 B1 KR 101012167B1
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- film
- biodegradable
- bidirectional
- shrinkage
- polylactic acid
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- 230000002457 bidirectional effect Effects 0.000 title claims abstract description 32
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 9
- 229920006300 shrink film Polymers 0.000 title claims description 23
- 229920005989 resin Polymers 0.000 claims abstract description 49
- 239000011347 resin Substances 0.000 claims abstract description 49
- 229920000747 poly(lactic acid) Polymers 0.000 claims abstract description 25
- 239000004626 polylactic acid Substances 0.000 claims abstract description 25
- JVTAAEKCZFNVCJ-REOHCLBHSA-N L-lactic acid Chemical compound C[C@H](O)C(O)=O JVTAAEKCZFNVCJ-REOHCLBHSA-N 0.000 claims abstract description 24
- 238000000034 method Methods 0.000 claims abstract description 19
- 239000005022 packaging material Substances 0.000 claims abstract description 6
- 239000002994 raw material Substances 0.000 claims description 25
- 230000009477 glass transition Effects 0.000 claims description 14
- 238000005266 casting Methods 0.000 claims description 9
- 125000001931 aliphatic group Chemical group 0.000 claims description 8
- 238000009998 heat setting Methods 0.000 claims description 8
- 238000002844 melting Methods 0.000 claims description 7
- 230000008018 melting Effects 0.000 claims description 7
- 238000010521 absorption reaction Methods 0.000 claims description 6
- 239000004645 polyester resin Substances 0.000 claims description 5
- 238000001816 cooling Methods 0.000 claims description 4
- 229920001225 polyester resin Polymers 0.000 claims description 4
- 238000002156 mixing Methods 0.000 claims description 3
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- 238000001125 extrusion Methods 0.000 claims description 2
- 230000003068 static effect Effects 0.000 claims description 2
- 229910004298 SiO 2 Inorganic materials 0.000 claims 2
- 238000007602 hot air drying Methods 0.000 claims 1
- 229920000728 polyester Polymers 0.000 claims 1
- 238000003860 storage Methods 0.000 abstract description 6
- 238000006065 biodegradation reaction Methods 0.000 abstract 1
- 230000001747 exhibiting effect Effects 0.000 abstract 1
- 238000002425 crystallisation Methods 0.000 description 10
- 230000008025 crystallization Effects 0.000 description 10
- 230000008602 contraction Effects 0.000 description 9
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 8
- -1 polyethylene Polymers 0.000 description 7
- OFOBLEOULBTSOW-UHFFFAOYSA-N Malonic acid Chemical compound OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 6
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 5
- 238000012360 testing method Methods 0.000 description 5
- 239000004594 Masterbatch (MB) Substances 0.000 description 4
- 239000004698 Polyethylene Substances 0.000 description 4
- 239000004743 Polypropylene Substances 0.000 description 4
- 239000002253 acid Substances 0.000 description 4
- WERYXYBDKMZEQL-UHFFFAOYSA-N butane-1,4-diol Chemical compound OCCCCO WERYXYBDKMZEQL-UHFFFAOYSA-N 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 229920000573 polyethylene Polymers 0.000 description 4
- 229920000139 polyethylene terephthalate Polymers 0.000 description 4
- 239000005020 polyethylene terephthalate Substances 0.000 description 4
- 229920001155 polypropylene Polymers 0.000 description 4
- 239000004800 polyvinyl chloride Substances 0.000 description 4
- 235000012239 silicon dioxide Nutrition 0.000 description 4
- 239000000377 silicon dioxide Substances 0.000 description 4
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 description 3
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 230000000704 physical effect Effects 0.000 description 3
- 229920000915 polyvinyl chloride Polymers 0.000 description 3
- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical group ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 description 2
- 229920006257 Heat-shrinkable film Polymers 0.000 description 2
- UFWIBTONFRDIAS-UHFFFAOYSA-N Naphthalene Chemical compound C1=CC=CC2=CC=CC=C21 UFWIBTONFRDIAS-UHFFFAOYSA-N 0.000 description 2
- 239000004793 Polystyrene Substances 0.000 description 2
- KKEYFWRCBNTPAC-UHFFFAOYSA-N Terephthalic acid Chemical compound OC(=O)C1=CC=C(C(O)=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-N 0.000 description 2
- DTQVDTLACAAQTR-UHFFFAOYSA-N Trifluoroacetic acid Chemical group OC(=O)C(F)(F)F DTQVDTLACAAQTR-UHFFFAOYSA-N 0.000 description 2
- WNLRTRBMVRJNCN-UHFFFAOYSA-N adipic acid Chemical compound OC(=O)CCCCC(O)=O WNLRTRBMVRJNCN-UHFFFAOYSA-N 0.000 description 2
- 229920003232 aliphatic polyester Polymers 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- XXMIOPMDWAUFGU-UHFFFAOYSA-N hexane-1,6-diol Chemical compound OCCCCCCO XXMIOPMDWAUFGU-UHFFFAOYSA-N 0.000 description 2
- QQVIHTHCMHWDBS-UHFFFAOYSA-N isophthalic acid Chemical compound OC(=O)C1=CC=CC(C(O)=O)=C1 QQVIHTHCMHWDBS-UHFFFAOYSA-N 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- BDJRBEYXGGNYIS-UHFFFAOYSA-N nonanedioic acid Chemical compound OC(=O)CCCCCCCC(O)=O BDJRBEYXGGNYIS-UHFFFAOYSA-N 0.000 description 2
- 238000004806 packaging method and process Methods 0.000 description 2
- 239000003208 petroleum Substances 0.000 description 2
- XNGIFLGASWRNHJ-UHFFFAOYSA-N phthalic acid Chemical compound OC(=O)C1=CC=CC=C1C(O)=O XNGIFLGASWRNHJ-UHFFFAOYSA-N 0.000 description 2
- 229920006267 polyester film Polymers 0.000 description 2
- 238000012805 post-processing Methods 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- CXMXRPHRNRROMY-UHFFFAOYSA-N sebacic acid Chemical compound OC(=O)CCCCCCCCC(O)=O CXMXRPHRNRROMY-UHFFFAOYSA-N 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 230000037303 wrinkles Effects 0.000 description 2
- DNIAPMSPPWPWGF-VKHMYHEASA-N (+)-propylene glycol Chemical compound C[C@H](O)CO DNIAPMSPPWPWGF-VKHMYHEASA-N 0.000 description 1
- YPFDHNVEDLHUCE-UHFFFAOYSA-N 1,3-propanediol Substances OCCCO YPFDHNVEDLHUCE-UHFFFAOYSA-N 0.000 description 1
- RTBFRGCFXZNCOE-UHFFFAOYSA-N 1-methylsulfonylpiperidin-4-one Chemical compound CS(=O)(=O)N1CCC(=O)CC1 RTBFRGCFXZNCOE-UHFFFAOYSA-N 0.000 description 1
- 238000005160 1H NMR spectroscopy Methods 0.000 description 1
- QJGNSTCICFBACB-UHFFFAOYSA-N 2-octylpropanedioic acid Chemical compound CCCCCCCCC(C(O)=O)C(O)=O QJGNSTCICFBACB-UHFFFAOYSA-N 0.000 description 1
- YZCKVEUIGOORGS-OUBTZVSYSA-N Deuterium Chemical group [2H] YZCKVEUIGOORGS-OUBTZVSYSA-N 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- ALQSHHUCVQOPAS-UHFFFAOYSA-N Pentane-1,5-diol Chemical compound OCCCCCO ALQSHHUCVQOPAS-UHFFFAOYSA-N 0.000 description 1
- 239000002202 Polyethylene glycol Substances 0.000 description 1
- KDYFGRWQOYBRFD-UHFFFAOYSA-N Succinic acid Natural products OC(=O)CCC(O)=O KDYFGRWQOYBRFD-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 239000001361 adipic acid Substances 0.000 description 1
- 235000011037 adipic acid Nutrition 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- JFCQEDHGNNZCLN-UHFFFAOYSA-N anhydrous glutaric acid Natural products OC(=O)CCCC(O)=O JFCQEDHGNNZCLN-UHFFFAOYSA-N 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 230000003078 antioxidant effect Effects 0.000 description 1
- 239000002216 antistatic agent Substances 0.000 description 1
- KDYFGRWQOYBRFD-NUQCWPJISA-N butanedioic acid Chemical compound O[14C](=O)CC[14C](O)=O KDYFGRWQOYBRFD-NUQCWPJISA-N 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- PMMYEEVYMWASQN-IMJSIDKUSA-N cis-4-Hydroxy-L-proline Chemical compound O[C@@H]1CN[C@H](C(O)=O)C1 PMMYEEVYMWASQN-IMJSIDKUSA-N 0.000 description 1
- 239000003431 cross linking reagent Substances 0.000 description 1
- QYQADNCHXSEGJT-UHFFFAOYSA-N cyclohexane-1,1-dicarboxylate;hydron Chemical compound OC(=O)C1(C(O)=O)CCCCC1 QYQADNCHXSEGJT-UHFFFAOYSA-N 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 229910052805 deuterium Inorganic materials 0.000 description 1
- 150000002009 diols Chemical class 0.000 description 1
- 150000002013 dioxins Chemical class 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 239000012760 heat stabilizer Substances 0.000 description 1
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 235000014058 juice drink Nutrition 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- SLCVBVWXLSEKPL-UHFFFAOYSA-N neopentyl glycol Chemical compound OCC(C)(C)CO SLCVBVWXLSEKPL-UHFFFAOYSA-N 0.000 description 1
- 235000006408 oxalic acid Nutrition 0.000 description 1
- 229920006280 packaging film Polymers 0.000 description 1
- 239000012785 packaging film Substances 0.000 description 1
- CGEXUOTXYSGBLV-UHFFFAOYSA-N phenyl benzenesulfonate Chemical compound C=1C=CC=CC=1S(=O)(=O)OC1=CC=CC=C1 CGEXUOTXYSGBLV-UHFFFAOYSA-N 0.000 description 1
- 229920002961 polybutylene succinate Polymers 0.000 description 1
- 239000004631 polybutylene succinate Substances 0.000 description 1
- 229920001896 polybutyrate Polymers 0.000 description 1
- 229920001223 polyethylene glycol Polymers 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 229920000166 polytrimethylene carbonate Polymers 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 238000003900 soil pollution Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000006097 ultraviolet radiation absorber Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/18—Manufacture of films or sheets
-
- 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
- B29C55/00—Shaping by stretching, e.g. drawing through a die; Apparatus therefor
- B29C55/02—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets
- B29C55/10—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets multiaxial
- B29C55/12—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets multiaxial biaxial
- B29C55/14—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets multiaxial biaxial successively
- B29C55/143—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets multiaxial biaxial successively firstly parallel to the direction of feed and then transversely thereto
-
- 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
- B29C61/00—Shaping by liberation of internal stresses; Making preforms having internal stresses; Apparatus therefor
- B29C61/003—Shaping by liberation of internal stresses; Making preforms having internal stresses; Apparatus therefor characterised by the choice of material
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L67/00—Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Compositions of derivatives of such polymers
- C08L67/04—Polyesters derived from hydroxycarboxylic acids, e.g. lactones
-
- 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
- B29C61/00—Shaping by liberation of internal stresses; Making preforms having internal stresses; Apparatus therefor
- B29C61/06—Making preforms having internal stresses, e.g. plastic memory
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2067/00—Use of polyesters or derivatives thereof, as moulding material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2067/00—Use of polyesters or derivatives thereof, as moulding material
- B29K2067/04—Polyesters derived from hydroxycarboxylic acids
- B29K2067/046—PLA, i.e. polylactic acid or polylactide
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
- B29K2995/0037—Other properties
- B29K2995/0049—Heat shrinkable
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
- B29K2995/0037—Other properties
- B29K2995/0059—Degradable
- B29K2995/006—Bio-degradable, e.g. bioabsorbable, bioresorbable or bioerodible
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2367/00—Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
- C08J2367/04—Polyesters derived from hydroxy carboxylic acids, e.g. lactones
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/06—Biodegradable
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Manufacture Of Macromolecular Shaped Articles (AREA)
- Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
Abstract
Description
Claims (10)
- 폴리락트산 수지를 주성분으로 하는 이축연신 생분해 필름에 있어서,L-락트산을 80 중량% 이상 함유하는 폴리락트산 수지 및 SiO2를 포함하고;열풍오븐에서 100 ℃, 10 분간 수축시켰을 때의 양방향 수축률이 10 내지 50 %이며;스트레인-스트레스 곡선상에서 초기 탄성모듈러스가 50 내지 350 ㎏f/㎟ 이고;열풍수축터널에서 120 ℃, 10 초간 수축시킨 후의 필름의 신도 저하율(△E)이 0 내지 70 %인 것을 특징으로 하는, 생분해성 양방향 수축필름.
- 제1항에 있어서,상기 폴리락트산 수지 외에, 유리전이온도가 -80 내지 60 ℃인 지방족 또는 지방족방향족 폴리에스테르 수지를 원료수지의 총중량 대비 1 내지 30 중량%의 양으로 포함하는 것을 특징으로 하는 생분해성 양방향 수축필름.
- 제1항에 있어서,상기 필름이 5 ㎏f-㎝ 이상의 충격흡수에너지를 갖는 것을 특징으로 하는 생분해성 양방향 수축필름.
- 제1항에 있어서,상기 필름이 3.0 ㎏f/㎛ 이상의 엘멘도프 인열강도를 갖는 것을 특징으로 하는 생분해성 양방향 수축필름.
- 제1항에 있어서,상기 필름이 30 % 이하의 헤이즈를 갖는 것을 특징으로 하는 생분해성 양방향 수축필름.
- (1) L-락트산을 80 중량% 이상 함유하는 폴리락트산 수지를 주성분으로 하는 원료수지를 SiO2와 블렌딩한 후 열풍 건조하여 수분을 제거하고, 용융압출하는 단계;(2) 용융압출된 미연신 필름을 원료수지의 유리전이온도보다 0 내지 40 ℃ 높은 온도에서 종과 횡 방향으로 각각 2 내지 7 배 연신하는 단계;(3) 이축연신된 필름을 원료수지의 용융온도보다 50 내지 100 ℃ 낮은 온도에서 열고정시키는 단계; 및(4) 열고정된 필름에 대해 무이완 또는 정이완을 주면서 필름을 냉각시키는 단계를 포함하는, 제1항의 생분해성 양방향 수축필름의 제조방법.
- 제6항에 있어서,상기 단계 (2)에서 종과 횡방향으로 각각 3 내지 5 배 이축연신하는 것을 특 징으로 하는 생분해성 양방향 수축필름의 제조방법.
- 제6항에 있어서,상기 단계 (1)의 원료수지가, 상기 폴리락트산 수지 외에, 유리전이온도가 -80 내지 60 ℃인 지방족 또는 지방족방향족 폴리에스테르 성분을 1 내지 30 중량%의 양으로 함유하는 것을 특징으로 하는 생분해성 양방향 수축필름의 제조방법.
- 제6항에 있어서,상기 단계 (2)의 연신공정을 0 내지 30 ℃의 캐스팅 롤에서 수행하는 것을 특징으로 하는 생분해성 양방향 수축필름의 제조방법.
- 제1항의 생분해성 양방향 수축필름을 포함하는 포장재.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020080096961A KR101012167B1 (ko) | 2008-10-02 | 2008-10-02 | 생분해성 양방향 수축필름 및 이의 제조방법 |
PCT/KR2009/005602 WO2010038984A2 (en) | 2008-10-02 | 2009-09-30 | Bidirection-shrinkable biodegradable film and process for preparation thereof |
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KR20250020800A (ko) | 2023-08-04 | 2025-02-11 | 김건한 | 기화성 방청 열수축 필림 제조용 기화성 방청 접착제제조방법 |
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KR101695926B1 (ko) * | 2010-12-02 | 2017-01-12 | 에스케이씨 주식회사 | 폴리에스터 필름 및 이의 제조방법 |
US20140151258A1 (en) * | 2012-12-03 | 2014-06-05 | Cryovac, Inc. | Polymeric Films Comprising Biodegradable Polyester or Copolymer Thereof |
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JP2004058586A (ja) * | 2002-07-31 | 2004-02-26 | Mitsubishi Plastics Ind Ltd | ポリ乳酸系熱収縮性フィルム |
KR20050040851A (ko) * | 2001-11-01 | 2005-05-03 | 아사히 가세이 라이프 앤드 리빙 가부시키가이샤 | 폴리락트산계 수지 2축 연신 필름 |
JP2007161825A (ja) | 2005-12-12 | 2007-06-28 | Mitsubishi Plastics Ind Ltd | 熱収縮性空孔含有フィルム、並びに該フィルムを用いた成形品、熱収縮性ラベル及び容器 |
KR20080011321A (ko) * | 2005-05-11 | 2008-02-01 | 미쓰비시 쥬시 가부시끼가이샤 | 열수축성 필름, 그리고 이 열수축성 필름을 사용한 성형품,열수축성 라벨, 및 이 성형품을 사용한, 또는 이 라벨을장착한 용기 |
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KR20050040851A (ko) * | 2001-11-01 | 2005-05-03 | 아사히 가세이 라이프 앤드 리빙 가부시키가이샤 | 폴리락트산계 수지 2축 연신 필름 |
JP2004058586A (ja) * | 2002-07-31 | 2004-02-26 | Mitsubishi Plastics Ind Ltd | ポリ乳酸系熱収縮性フィルム |
KR20080011321A (ko) * | 2005-05-11 | 2008-02-01 | 미쓰비시 쥬시 가부시끼가이샤 | 열수축성 필름, 그리고 이 열수축성 필름을 사용한 성형품,열수축성 라벨, 및 이 성형품을 사용한, 또는 이 라벨을장착한 용기 |
JP2007161825A (ja) | 2005-12-12 | 2007-06-28 | Mitsubishi Plastics Ind Ltd | 熱収縮性空孔含有フィルム、並びに該フィルムを用いた成形品、熱収縮性ラベル及び容器 |
Cited By (1)
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KR20250020800A (ko) | 2023-08-04 | 2025-02-11 | 김건한 | 기화성 방청 열수축 필림 제조용 기화성 방청 접착제제조방법 |
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KR20100037727A (ko) | 2010-04-12 |
WO2010038984A3 (en) | 2010-06-17 |
WO2010038984A2 (en) | 2010-04-08 |
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