CA1134579A - Method for reducing sharkskin melt fracture during extrusion of ethylene polymers - Google Patents
Method for reducing sharkskin melt fracture during extrusion of ethylene polymersInfo
- Publication number
- CA1134579A CA1134579A CA000343277A CA343277A CA1134579A CA 1134579 A CA1134579 A CA 1134579A CA 000343277 A CA000343277 A CA 000343277A CA 343277 A CA343277 A CA 343277A CA 1134579 A CA1134579 A CA 1134579A
- Authority
- CA
- Canada
- Prior art keywords
- die
- polymer
- ethylene
- melt
- copolymer
- 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
Links
- 238000000034 method Methods 0.000 title claims abstract description 108
- 238000001125 extrusion Methods 0.000 title claims abstract description 40
- 229920000573 polyethylene Polymers 0.000 title claims abstract description 30
- 229920000642 polymer Polymers 0.000 claims abstract description 82
- 238000009826 distribution Methods 0.000 claims abstract description 29
- 230000008569 process Effects 0.000 claims description 69
- 229920001577 copolymer Polymers 0.000 claims description 30
- 239000000155 melt Substances 0.000 claims description 28
- 239000005977 Ethylene Substances 0.000 claims description 25
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 claims description 21
- 229930195733 hydrocarbon Natural products 0.000 claims description 14
- 239000004215 Carbon black (E152) Substances 0.000 claims description 13
- 125000004432 carbon atom Chemical group C* 0.000 claims description 6
- 239000004711 α-olefin Substances 0.000 claims description 5
- 150000001875 compounds Chemical class 0.000 description 58
- 239000007789 gas Substances 0.000 description 53
- 239000003054 catalyst Substances 0.000 description 46
- 239000002243 precursor Substances 0.000 description 43
- 239000000203 mixture Substances 0.000 description 36
- 150000002500 ions Chemical class 0.000 description 34
- 239000012190 activator Substances 0.000 description 30
- 239000010936 titanium Substances 0.000 description 27
- 239000011347 resin Substances 0.000 description 26
- 229920005989 resin Polymers 0.000 description 26
- 239000002245 particle Substances 0.000 description 24
- 239000000463 material Substances 0.000 description 21
- 229920001684 low density polyethylene Polymers 0.000 description 20
- 239000004702 low-density polyethylene Substances 0.000 description 19
- -1 Polyethylene Polymers 0.000 description 17
- 238000006243 chemical reaction Methods 0.000 description 16
- 238000004519 manufacturing process Methods 0.000 description 14
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 12
- 238000002156 mixing Methods 0.000 description 11
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 10
- 239000012876 carrier material Substances 0.000 description 10
- 239000012530 fluid Substances 0.000 description 10
- QWTDNUCVQCZILF-UHFFFAOYSA-N isopentane Chemical compound CCC(C)C QWTDNUCVQCZILF-UHFFFAOYSA-N 0.000 description 10
- 238000006116 polymerization reaction Methods 0.000 description 10
- 238000001816 cooling Methods 0.000 description 9
- 150000002430 hydrocarbons Chemical class 0.000 description 9
- 239000000178 monomer Substances 0.000 description 9
- 239000002904 solvent Substances 0.000 description 9
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 8
- 230000015572 biosynthetic process Effects 0.000 description 7
- 230000000694 effects Effects 0.000 description 7
- 238000002347 injection Methods 0.000 description 7
- 239000007924 injection Substances 0.000 description 7
- 239000000243 solution Substances 0.000 description 7
- 150000003609 titanium compounds Chemical class 0.000 description 7
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 6
- 230000004913 activation Effects 0.000 description 6
- 238000001035 drying Methods 0.000 description 6
- 238000004806 packaging method and process Methods 0.000 description 6
- 230000002829 reductive effect Effects 0.000 description 6
- 239000007787 solid Substances 0.000 description 6
- 239000011701 zinc Substances 0.000 description 6
- 230000008859 change Effects 0.000 description 5
- AFABGHUZZDYHJO-UHFFFAOYSA-N dimethyl butane Natural products CCCC(C)C AFABGHUZZDYHJO-UHFFFAOYSA-N 0.000 description 5
- 229920001519 homopolymer Polymers 0.000 description 5
- 150000002681 magnesium compounds Chemical class 0.000 description 5
- 230000036961 partial effect Effects 0.000 description 5
- 238000006722 reduction reaction Methods 0.000 description 5
- 239000000377 silicon dioxide Substances 0.000 description 5
- 229910052786 argon Inorganic materials 0.000 description 4
- 238000013461 design Methods 0.000 description 4
- 230000003287 optical effect Effects 0.000 description 4
- 239000002685 polymerization catalyst Substances 0.000 description 4
- 230000009467 reduction Effects 0.000 description 4
- 238000000518 rheometry Methods 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 229910052719 titanium Inorganic materials 0.000 description 4
- 241000239290 Araneae Species 0.000 description 3
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 3
- 239000004698 Polyethylene Substances 0.000 description 3
- 125000001931 aliphatic group Chemical group 0.000 description 3
- 150000001338 aliphatic hydrocarbons Chemical class 0.000 description 3
- 125000005907 alkyl ester group Chemical group 0.000 description 3
- 230000004888 barrier function Effects 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 230000003247 decreasing effect Effects 0.000 description 3
- RTZKZFJDLAIYFH-UHFFFAOYSA-N ether Substances CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 3
- 229920001038 ethylene copolymer Polymers 0.000 description 3
- 239000012632 extractable Substances 0.000 description 3
- 239000001257 hydrogen Substances 0.000 description 3
- 229910052739 hydrogen Inorganic materials 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- 239000011777 magnesium Substances 0.000 description 3
- 239000011148 porous material Substances 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 3
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 3
- 238000010926 purge Methods 0.000 description 3
- 238000010791 quenching Methods 0.000 description 3
- 238000005245 sintering Methods 0.000 description 3
- 239000002002 slurry Substances 0.000 description 3
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 3
- 229920001169 thermoplastic Polymers 0.000 description 3
- 239000004416 thermosoftening plastic Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- 241001387976 Pera Species 0.000 description 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 150000007513 acids Chemical class 0.000 description 2
- 239000012986 chain transfer agent Substances 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 230000001143 conditioned effect Effects 0.000 description 2
- 238000007334 copolymerization reaction Methods 0.000 description 2
- 150000004292 cyclic ethers Chemical class 0.000 description 2
- 239000003085 diluting agent Substances 0.000 description 2
- 235000013305 food Nutrition 0.000 description 2
- 230000020169 heat generation Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000011261 inert gas Substances 0.000 description 2
- 150000002576 ketones Chemical class 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000011068 loading method Methods 0.000 description 2
- 229910052749 magnesium Inorganic materials 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- TZIHFWKZFHZASV-UHFFFAOYSA-N methyl formate Chemical compound COC=O TZIHFWKZFHZASV-UHFFFAOYSA-N 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 230000000171 quenching effect Effects 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 239000004753 textile Substances 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 229910052723 transition metal Inorganic materials 0.000 description 2
- 150000003624 transition metals Chemical class 0.000 description 2
- 238000013022 venting Methods 0.000 description 2
- 229910052725 zinc Inorganic materials 0.000 description 2
- RYHBNJHYFVUHQT-UHFFFAOYSA-N 1,4-Dioxane Chemical compound C1COCCO1 RYHBNJHYFVUHQT-UHFFFAOYSA-N 0.000 description 1
- BPIUIOXAFBGMNB-UHFFFAOYSA-N 1-hexoxyhexane Chemical compound CCCCCCOCCCCCC BPIUIOXAFBGMNB-UHFFFAOYSA-N 0.000 description 1
- KWKAKUADMBZCLK-UHFFFAOYSA-N 1-octene Chemical compound CCCCCCC=C KWKAKUADMBZCLK-UHFFFAOYSA-N 0.000 description 1
- DKPFZGUDAPQIHT-UHFFFAOYSA-N Butyl acetate Natural products CCCCOC(C)=O DKPFZGUDAPQIHT-UHFFFAOYSA-N 0.000 description 1
- 229910000968 Chilled casting Inorganic materials 0.000 description 1
- 241000136406 Comones Species 0.000 description 1
- 241000518994 Conta Species 0.000 description 1
- 241000251729 Elasmobranchii Species 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- 235000013382 Morus laevigata Nutrition 0.000 description 1
- 244000278455 Morus laevigata Species 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 101100409194 Rattus norvegicus Ppargc1b gene Proteins 0.000 description 1
- 101150071661 SLC25A20 gene Proteins 0.000 description 1
- 229910010066 TiC14 Inorganic materials 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 235000018936 Vitellaria paradoxa Nutrition 0.000 description 1
- 238000002835 absorbance Methods 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 125000000217 alkyl group Chemical group 0.000 description 1
- HSFWRNGVRCDJHI-UHFFFAOYSA-N alpha-acetylene Natural products C#C HSFWRNGVRCDJHI-UHFFFAOYSA-N 0.000 description 1
- VREFGVBLTWBCJP-UHFFFAOYSA-N alprazolam Chemical compound C12=CC(Cl)=CC=C2N2C(C)=NN=C2CN=C1C1=CC=CC=C1 VREFGVBLTWBCJP-UHFFFAOYSA-N 0.000 description 1
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical compound [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- HUTDUHSNJYTCAR-UHFFFAOYSA-N ancymidol Chemical compound C1=CC(OC)=CC=C1C(O)(C=1C=NC=NC=1)C1CC1 HUTDUHSNJYTCAR-UHFFFAOYSA-N 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000000498 ball milling Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 101150102633 cact gene Proteins 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 150000001735 carboxylic acids Chemical class 0.000 description 1
- 238000003889 chemical engineering Methods 0.000 description 1
- ANTSCNMPPGJYLG-UHFFFAOYSA-N chlordiazepoxide Chemical compound O=N=1CC(NC)=NC2=CC=C(Cl)C=C2C=1C1=CC=CC=C1 ANTSCNMPPGJYLG-UHFFFAOYSA-N 0.000 description 1
- 238000004587 chromatography analysis Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 125000003963 dichloro group Chemical group Cl* 0.000 description 1
- JXSJBGJIGXNWCI-UHFFFAOYSA-N diethyl 2-[(dimethoxyphosphorothioyl)thio]succinate Chemical compound CCOC(=O)CC(SP(=S)(OC)OC)C(=O)OCC JXSJBGJIGXNWCI-UHFFFAOYSA-N 0.000 description 1
- 125000004177 diethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 1
- YNLAOSYQHBDIKW-UHFFFAOYSA-M diethylaluminium chloride Chemical compound CC[Al](Cl)CC YNLAOSYQHBDIKW-UHFFFAOYSA-M 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 238000005108 dry cleaning Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000000921 elemental analysis Methods 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 125000002573 ethenylidene group Chemical group [*]=C=C([H])[H] 0.000 description 1
- 150000002170 ethers Chemical class 0.000 description 1
- AEOCXXJPGCBFJA-UHFFFAOYSA-N ethionamide Chemical compound CCC1=CC(C(N)=S)=CC=N1 AEOCXXJPGCBFJA-UHFFFAOYSA-N 0.000 description 1
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 1
- 125000002534 ethynyl group Chemical group [H]C#C* 0.000 description 1
- 239000003000 extruded plastic Substances 0.000 description 1
- 238000007765 extrusion coating Methods 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 238000005227 gel permeation chromatography Methods 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 150000004820 halides Chemical class 0.000 description 1
- 150000008282 halocarbons Chemical class 0.000 description 1
- 239000002638 heterogeneous catalyst Substances 0.000 description 1
- FUZZWVXGSFPDMH-UHFFFAOYSA-N hexanoic acid Chemical compound CCCCCC(O)=O FUZZWVXGSFPDMH-UHFFFAOYSA-N 0.000 description 1
- 229920001903 high density polyethylene Polymers 0.000 description 1
- 239000004700 high-density polyethylene Substances 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 238000005470 impregnation Methods 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 239000011147 inorganic material Substances 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- OTCKOJUMXQWKQG-UHFFFAOYSA-L magnesium bromide Chemical compound [Mg+2].[Br-].[Br-] OTCKOJUMXQWKQG-UHFFFAOYSA-L 0.000 description 1
- 229910001623 magnesium bromide Inorganic materials 0.000 description 1
- BLQJIBCZHWBKSL-UHFFFAOYSA-L magnesium iodide Chemical compound [Mg+2].[I-].[I-] BLQJIBCZHWBKSL-UHFFFAOYSA-L 0.000 description 1
- 229910001641 magnesium iodide Inorganic materials 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 235000013372 meat Nutrition 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 239000002480 mineral oil Substances 0.000 description 1
- 235000010446 mineral oil Nutrition 0.000 description 1
- 239000010813 municipal solid waste Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000011368 organic material Substances 0.000 description 1
- 229940061319 ovide Drugs 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 239000012785 packaging film Substances 0.000 description 1
- 229920006280 packaging film Polymers 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 239000002574 poison Substances 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 230000000063 preceeding effect Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000011027 product recovery Methods 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- GPKJTRJOBQGKQK-UHFFFAOYSA-N quinacrine Chemical compound C1=C(OC)C=C2C(NC(C)CCCN(CC)CC)=C(C=CC(Cl)=C3)C3=NC2=C1 GPKJTRJOBQGKQK-UHFFFAOYSA-N 0.000 description 1
- 239000000376 reactant Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 229930195734 saturated hydrocarbon Natural products 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- 238000005204 segregation Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 239000012748 slip agent Substances 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000001694 spray drying Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 235000012976 tarts Nutrition 0.000 description 1
- 229920001897 terpolymer Polymers 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 239000012815 thermoplastic material Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 150000003623 transition metal compounds Chemical class 0.000 description 1
- VOITXYVAKOUIBA-UHFFFAOYSA-N triethylaluminium Chemical compound CC[Al](CC)CC VOITXYVAKOUIBA-UHFFFAOYSA-N 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- 235000013311 vegetables Nutrition 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
- 150000003752 zinc compounds Chemical class 0.000 description 1
Classifications
-
- 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
- B29C48/022—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the choice of material
-
- 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
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/07—Flat, e.g. panels
- B29C48/08—Flat, e.g. panels flexible, e.g. films
-
- 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
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
- B29C48/10—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels flexible, e.g. blown foils
-
- 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
- B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
- B29K2023/04—Polymers of ethylene
- B29K2023/06—PE, i.e. polyethylene
-
- 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
- B29K2995/0063—Density
-
- 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
- B29K2995/0072—Roughness, e.g. anti-slip
- B29K2995/0073—Roughness, e.g. anti-slip smooth
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US001,932 | 1979-01-08 | ||
| US06/001,932 US4267146A (en) | 1979-01-08 | 1979-01-08 | Method for reducing melt fracture during extrusion of ethylene polymers |
| US06/099,061 US4282177A (en) | 1979-01-08 | 1979-12-12 | Method for reducing sharkskin melt fracture during extrusion of ethylene polymers |
| US099,061 | 1979-12-12 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1134579A true CA1134579A (en) | 1982-11-02 |
Family
ID=26669697
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000343277A Expired CA1134579A (en) | 1979-01-08 | 1980-01-08 | Method for reducing sharkskin melt fracture during extrusion of ethylene polymers |
Country Status (18)
| Country | Link |
|---|---|
| US (1) | US4282177A (en:Method) |
| EP (1) | EP0015359B1 (en:Method) |
| AR (1) | AR226049A1 (en:Method) |
| AT (1) | ATE12470T1 (en:Method) |
| AU (1) | AU536497B2 (en:Method) |
| BR (1) | BR8000062A (en:Method) |
| CA (1) | CA1134579A (en:Method) |
| DE (1) | DE3070408D1 (en:Method) |
| DK (1) | DK6680A (en:Method) |
| EG (1) | EG14717A (en:Method) |
| ES (1) | ES8100146A1 (en:Method) |
| FI (1) | FI800042A7 (en:Method) |
| GR (1) | GR71868B (en:Method) |
| IL (1) | IL59056A (en:Method) |
| IN (1) | IN152491B (en:Method) |
| NO (1) | NO800020L (en:Method) |
| NZ (1) | NZ192541A (en:Method) |
| PT (1) | PT70663A (en:Method) |
Families Citing this family (29)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4330501A (en) | 1980-06-30 | 1982-05-18 | Union Carbide Corporation | Method and apparatus for cooling film bubble of low strain hardening polymers |
| US4357291A (en) * | 1980-08-28 | 1982-11-02 | Union Carbide Corporation | Double metering extruder screw and method of extrusion |
| US4348349A (en) * | 1980-10-01 | 1982-09-07 | Union Carbide Corporation | Method for reducing melt fracture during extrusion of a molten narrow molecular weight distribution, linear, ethylene copolymer |
| US4360494A (en) * | 1981-04-01 | 1982-11-23 | Union Carbide Corporation | Process for reducing melt fracture during extrusion of a molten narrow molecular weight distribution, linear, ethylene copolymer |
| US4543399A (en) * | 1982-03-24 | 1985-09-24 | Union Carbide Corporation | Fluidized bed reaction systems |
| US4415711A (en) * | 1982-07-02 | 1983-11-15 | Union Carbide Corporation | Process for forming film from low strain hardening polymers |
| US4447387A (en) * | 1982-09-30 | 1984-05-08 | Union Carbide Corporation | Process for manufacture of tubular film |
| KR850000296A (ko) * | 1983-06-28 | 1985-02-26 | 에드워드 지·그라이어 | 에틸렌 공중합체 압출시 표면 용융파괴의 감소 방법 |
| US4554120A (en) * | 1983-06-28 | 1985-11-19 | Union Carbide Corporation | Process for eliminating surface melt fracture during extrusion of thermoplastic polymers |
| US4522776A (en) * | 1983-06-28 | 1985-06-11 | Union Carbide Corporation | Process for substantially eliminating surface melt fracture when extruding ethylene polymers |
| CA1210917A (en) * | 1983-06-28 | 1986-09-09 | Arakalgud V. Ramamurthy | Process for reducing surface melt fracture during extrusion of ethylene polymers |
| US4552712A (en) * | 1983-06-28 | 1985-11-12 | Union Carbide Corporation | Process for reducing surface melt fracture during extrusion of ethylene polymers |
| US4832897A (en) * | 1984-02-07 | 1989-05-23 | Stamicarbon B.V. | Process for the preparation of blown film |
| NL8502191A (nl) * | 1985-08-06 | 1987-03-02 | Stamicarbon | Werkwijze voor het vervaardigen van vlakfolie. |
| NL8502190A (nl) * | 1985-08-06 | 1987-03-02 | Stamicarbon | Werkwijze voor het vervaardigen van blaasfolie en georienteerde folie. |
| US4713205A (en) * | 1985-09-25 | 1987-12-15 | Mobil Oil Corporation | Method for reducing melt fracture during extrusion of linear polyethylene homopolymers and copolymers by varying the geometry of the die exit face |
| US4753767A (en) * | 1986-04-03 | 1988-06-28 | The Dow Chemical Company | Extrusion apparatus and method |
| US4780264A (en) * | 1987-05-22 | 1988-10-25 | The Dow Chemical Company | Linear low density polyethylene cast film |
| HUT48518A (en) * | 1987-06-03 | 1989-06-28 | Zoltan Balajthy | Process for facilitating processing of thermoplastic polymers |
| US4859398A (en) * | 1987-07-02 | 1989-08-22 | Mobil Oil Corporation | High shear extrusion of linear low density polyethylene |
| US4948543A (en) * | 1989-06-15 | 1990-08-14 | Union Carbide Chemicals And Plastics Company, Inc. | Process for eliminating surface melt fracture during extrusion of thermoplastic polymers |
| US5344714A (en) * | 1992-11-04 | 1994-09-06 | Mobil Oil Corporation | LLDPE composite film free of melt fracture |
| US5718852A (en) * | 1994-05-10 | 1998-02-17 | The Clorox Company | Process controlling a blow molding machine |
| US6245271B1 (en) | 1998-12-18 | 2001-06-12 | Kimberly-Clark Worldwide, Inc. | Reduced die lip buildup extrusion of polymer compositions |
| US6358449B1 (en) | 1999-11-22 | 2002-03-19 | Kimberly-Clark Worldwide, Inc. | Apparatus and method for reducing die accumulation |
| US7955540B2 (en) * | 2007-01-19 | 2011-06-07 | Exxonmobil Chemical Patents Inc. | Extrusion of thermoplastic elastomers |
| US20130319131A1 (en) | 2012-05-31 | 2013-12-05 | Chevron Phillips Chemical Company Lp | Controlling Melt Fracture in Bimodal Resin Pipe |
| WO2017138931A1 (en) * | 2016-02-10 | 2017-08-17 | The Yokohama Rubber Co., Ltd. | Extrusion molding equipment and process for producing cylindrical film |
| CN113784829B (zh) | 2019-05-30 | 2024-07-30 | 陶氏环球技术有限责任公司 | 挤出熔体中无表面破裂的线性低密度聚乙烯（lldpe）的方法 |
Family Cites Families (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2332829A (en) * | 1939-10-04 | 1943-10-26 | American Plastics Corp | Process of making casein plastic products and apparatus therefor |
| US3030665A (en) * | 1958-03-05 | 1962-04-24 | Eagleton Sidney Douglas | Refining thermoplastic resins |
| CH426237A (de) * | 1963-11-30 | 1966-12-15 | Basf Ag | Verfahren und Vorrichtung zum kontinuierlichen Herstellen von Profilen aus thermoplastischen Kunststoffen |
| US3382535A (en) * | 1965-04-16 | 1968-05-14 | Western Electric Co | Minimum length extrusion die |
| US3376605A (en) * | 1966-01-27 | 1968-04-09 | Du Pont | Extrusion apparatus |
| GB1441586A (en) * | 1972-07-12 | 1976-07-07 | Ici Ltd | Method for reducing sharkskin on extruded polymeric material |
| US3874837A (en) * | 1972-09-18 | 1975-04-01 | Airco Inc | Die for extrusion of fine grained green carbon |
| US3915616A (en) * | 1972-10-24 | 1975-10-28 | Phillips Petroleum Co | Diverging mandrel extension for extrusion of foamed polymer |
| US3876740A (en) * | 1972-10-27 | 1975-04-08 | Standard Oil Co | Process for improving interior surface smoothness and gloss in foamed tubular extrudates by the use of extrusion die faces of novel geometry |
| US3879158A (en) * | 1973-01-09 | 1975-04-22 | Enrique Schele | Apparatus for extruding thermoplastic annular shapes |
| US3879507A (en) * | 1973-02-26 | 1975-04-22 | Mobil Oil Corp | Method of producing a foam-form flat film or sheet having a more balanced machine and traverse direction strength |
| US3914366A (en) * | 1973-03-05 | 1975-10-21 | Phillips Petroleum Co | Method for forming a parison |
| US3994654A (en) * | 1975-01-02 | 1976-11-30 | Monsanto Company | Die for extruding thermoplastic sheets |
| US4187269A (en) * | 1975-11-17 | 1980-02-05 | The Dow Chemical Company | Extrusion process for reducing melt fracture |
| US4243619A (en) * | 1978-03-31 | 1981-01-06 | Union Carbide Corporation | Process for making film from low density ethylene hydrocarbon copolymer |
-
1979
- 1979-12-12 US US06/099,061 patent/US4282177A/en not_active Expired - Lifetime
- 1979-12-31 IL IL59056A patent/IL59056A/xx unknown
-
1980
- 1980-01-04 NO NO800020A patent/NO800020L/no unknown
- 1980-01-05 GR GR60903A patent/GR71868B/el unknown
- 1980-01-07 NZ NZ192541A patent/NZ192541A/xx unknown
- 1980-01-07 AT AT80100070T patent/ATE12470T1/de active
- 1980-01-07 BR BR8000062A patent/BR8000062A/pt unknown
- 1980-01-07 AR AR279556A patent/AR226049A1/es active
- 1980-01-07 DE DE8080100070T patent/DE3070408D1/de not_active Expired
- 1980-01-07 IN IN26/CAL/80A patent/IN152491B/en unknown
- 1980-01-07 ES ES487498A patent/ES8100146A1/es not_active Expired
- 1980-01-07 PT PT70663A patent/PT70663A/pt unknown
- 1980-01-07 FI FI800042A patent/FI800042A7/fi not_active Application Discontinuation
- 1980-01-07 DK DK6680A patent/DK6680A/da not_active Application Discontinuation
- 1980-01-07 EP EP80100070A patent/EP0015359B1/en not_active Expired
- 1980-01-08 EG EG8017A patent/EG14717A/xx active
- 1980-01-08 CA CA000343277A patent/CA1134579A/en not_active Expired
- 1980-01-08 AU AU54451/80A patent/AU536497B2/en not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| AU5445180A (en) | 1980-07-17 |
| US4282177A (en) | 1981-08-04 |
| EP0015359B1 (en) | 1985-04-03 |
| GR71868B (en:Method) | 1983-07-08 |
| EP0015359A1 (en) | 1980-09-17 |
| EG14717A (en) | 1985-03-31 |
| IL59056A0 (en) | 1980-03-31 |
| IN152491B (en:Method) | 1984-01-28 |
| DK6680A (da) | 1980-07-09 |
| ES487498A0 (es) | 1980-11-01 |
| AR226049A1 (es) | 1982-05-31 |
| DE3070408D1 (en) | 1985-05-09 |
| BR8000062A (pt) | 1980-10-21 |
| PT70663A (en) | 1980-02-01 |
| IL59056A (en) | 1983-06-15 |
| NZ192541A (en) | 1983-11-30 |
| ATE12470T1 (de) | 1985-04-15 |
| AU536497B2 (en) | 1984-05-10 |
| FI800042A7 (fi) | 1981-01-01 |
| NO800020L (no) | 1980-07-09 |
| ES8100146A1 (es) | 1980-11-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA1134579A (en) | Method for reducing sharkskin melt fracture during extrusion of ethylene polymers | |
| CA1131838A (en) | Process for making film from low density ethylene hydrocarbon copolymer | |
| US4343755A (en) | Process for extruding ethylene polymers | |
| CN1315919C (zh) | 具有改进物理性能的聚乙烯薄膜 | |
| US4267146A (en) | Method for reducing melt fracture during extrusion of ethylene polymers | |
| EP0080052B1 (en) | Improved catalyst composition for copolymerizing ethylene | |
| JPH0827205A (ja) | 低ゲルポリエチレンフィルムの製造方法 | |
| EP0337365A2 (en) | Method for decreasing swell properties of alpha olefins | |
| EP3802640B1 (en) | Unimodal polyethylene copolymer and film thereof | |
| EP0757076A1 (en) | Process for the extrusion of polyethylene | |
| KR20230048362A (ko) | 열가소성 중합체 조성물 및 이로부터 필름을 제조하는 방법 | |
| US4552712A (en) | Process for reducing surface melt fracture during extrusion of ethylene polymers | |
| EP2621962B1 (en) | Polyethylene extruded articles | |
| EP3980491B1 (en) | Polyethylene blend | |
| US11649305B2 (en) | Unimodal polyethylene copolymer and film thereof | |
| CA3106989C (en) | Unimodal polyethylene copolymer and film thereof | |
| Wu et al. | MgCl2‐Supported Ti Catalysts for the Production of Morphology‐Controlled Polyethylene | |
| KR20000005387A (ko) | 고충격lldpe필름 | |
| KR820002059B1 (ko) | 에틸렌 중합체의 압출공정에서 샤크스킨 멜트프렉츄어를 감소시키는 방법 | |
| EP0136412A1 (en) | Method for reducing surface melt fracture during extrusion of ethylene polymers | |
| WO2000015712A1 (en) | Polyethylene film composition | |
| CN119836441A (zh) | 用于吹塑的具有改进的膨胀行为的聚乙烯组合物 | |
| WU et al. | 8 MgCl2-Supported TiCl, Catalysts | |
| CS214804B2 (cs) | Způsob výroby extrudátu z rychle tajícího polymeru ethylenu | |
| MXPA01002520A (en) | Polyethylene film composition |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry | ||
| MKEX | Expiry |
Effective date: 19991102 |