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Low-density polyethylene

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241: 165:. Because of its lower density (high branching), it breaks down more easily than other plastics; as this happens, the surface area increases. Production of these trace gases from virgin plastics increases with surface area and with time, so that LDPE emits greenhouse gases at a more unsustainable rate than other plastics. In a test at the end of 212 days' incubation, emissions recorded were 5.8 nmol g-1 d-1 of methane, 14.5 nmol g d of ethylene, 3.9 nmol g d of ethane, and 9.7 nmol g d of propylene. When incubated in air, LDPE emits methane and ethylene at rates about 2 times and about 76 times, respectively, more than in water. 269: 628: 261: 31: 2416: 46: 787: 249: 646:
Qiu, Xia-Wen; Pei, Jie; Wu, Chen-Chou; Song, Lin; Bao, Lian-Jun; Zeng, Eddy Y. (August 2021). "Determination of low-density polyethylene–water partition coefficients for novel halogenated flame retardants with the large volume model and co-solvent model".
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Polyolefins (LDPE, HDPE, PP) are a major type of thermoplastic. LDPE is widely used for manufacturing various containers, dispensing bottles, wash bottles, tubing, plastic parts for computer components, and various
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cause it to swell. It can withstand temperatures of 65 Â°C (149 Â°F) continuously and 90 Â°C (194 Â°F) for a short time. Made in translucent and opaque variations, it is quite flexible and tough.
91:) is recycled in the United States. Despite competition from more modern polymers, LDPE continues to be an important plastic grade. In 2013 the worldwide LDPE market reached a volume of about US$ 33 billion. 715:
Achilias, D.S.; Roupakias, C.; Megalokonomos, P.; Lappas, A.A.; Antonakou, Ε.V. (November 2007). "Chemical recycling of plastic wastes made from polyethylene (LDPE and HDPE) and polypropylene (PP)".
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is higher. The side branches mean that its molecules are less tightly packed and less crystalline, and therefore its
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Limited resistance (moderate attack/significant chemical reaction, suitable for short-term use only) to
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Despite its designation with the recycling symbol, it cannot be as commonly recycled as
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Karl, David M.; Wilson, Samuel T.; FerrĂłn, Sara; Royer, Sarah-Jeanne (1 August 2018).
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When exposed to consistent sunlight, the plastic produces significant amounts of two
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and LDPE (as the waterproof inner and outer layer), and often with of a layer of
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Excellent resistance (no attack/no chemical reaction) to dilute and concentrated
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Introduction to Industrial Polyethylene: Properties, Catalysts, and Processes
329: 201: 75:, produced in 1933 by Dr John C. Swallow and M.W Perrin who were working for 61: 631: This article incorporates text by Royer et al available under the 1924: 1853: 1783: 1773: 1763: 1748: 1683: 1588: 1468: 1448: 1441: 1431: 1426: 1331: 1256: 1226: 1191: 1158: 1058: 1033: 744: 705: 676: 620: 470:"Municipal Solid Waste Generation,n word and Disposal in the United States" 416: 354: 282: 214: 72: 30: 2205: 2170: 2044: 1833: 1708: 1693: 1658: 1638: 1628: 1568: 1548: 1493: 1416: 1231: 1163: 1148: 1098: 983: 218: 2285: 2265: 2155: 2024: 1949: 1838: 1753: 1618: 1578: 1553: 1518: 1488: 1411: 1386: 1336: 1206: 1038: 1023: 998: 978: 920: 325: 253: 2378: 2185: 1979: 1868: 1858: 1848: 1803: 1778: 1623: 1508: 1463: 1406: 1173: 1018: 950: 834: 300: 207: 714: 569:"Production of methane and ethylene from plastic in the environment" 2200: 2150: 2059: 1929: 1888: 1718: 1643: 1633: 1538: 1473: 1376: 1361: 1306: 1246: 1123: 1088: 988: 296: 211: 193: 162: 68: 45: 1939: 1934: 1883: 1593: 1341: 1196: 158: 147: 115: 65: 2353: 1738: 1436: 1301: 1266: 1261: 1236: 1216: 786: 197: 192:
Good resistance (minor attack/very low chemical reactivity) to
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Parts that require flexibility, for which it serves very well
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LDPE is defined by a density range of 917–930 kg/m. At
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it is not reactive, except to strong oxidizers; some
83:. Its manufacture employs the same method today. The 227:Poor resistance, and not recommended for use with 2431: 308:Very soft and pliable parts such as snap-on lids 281:laboratory equipment. Its most common use is in 871:Modified atmosphere/modified humidity packaging 487:"Market Study: Polyethylene LDPE (2nd edition)" 441: 136:instantaneous-dipole induced-dipole attraction 819: 645: 2005:Hazard analysis and critical control points 826: 812: 1915:Automatic identification and data capture 610: 592: 339:Packaging for computer hardware, such as 544:"Polyethylene (Low Density) LDPE, LLDPE" 422:Ultra-high-molecular-weight polyethylene 267: 259: 247: 244:A GEECO bowl, c.1950, still used in 2014 239: 79:(ICI) using a high pressure process via 44: 29: 285:. Other products made from it include: 126:(on about 2% of the carbon atoms) than 14: 2432: 168: 100:2 plastics (high-density polyethylene) 807: 537: 535: 499: 49:Schematic of LDPE branching structure 1317:Flexible intermediate bulk container 448:. John Wiley and Sons. pp. 1–. 289:Trays and general purpose containers 798:2010_MSW_Tables_and_Figures_508.pdf 699:"LDPE Chemical Compatibility Chart" 272:Facial wash gel bottle made of LDPE 24: 2301:Vertical form fill sealing machine 532: 500:Brady, Angela (28 December 2018). 96:No. 1 (polyethylene terephthalate) 25: 2471: 2271:Rotary wheel blow molding systems 1119:Purdue Improved Crop Storage bags 779: 669:10.1016/j.chemosphere.2021.130235 502:"How to Recycle Number 4 Plastic" 292:Corrosion-resistant work surfaces 2415: 2414: 2241:Mechanical brake stretch wrapper 785: 626: 1975:Electronic article surveillance 1829:Shock and vibration data logger 1674:Linear low-density polyethylene 763: 751: 541: 399:Linear low-density polyethylene 235: 2080:Radio-frequency identification 758:LDPE products and applications 717:Journal of Hazardous Materials 691: 639: 560: 514: 493: 479: 462: 435: 13: 1: 2191:Extended core stretch wrapper 1144:Single-serve coffee container 833: 737:10.1016/j.jhazmat.2007.06.076 428: 105: 1347:Insulated shipping container 594:10.1371/journal.pone.0200574 475:. EPA.gov. 15 November 2016. 77:Imperial Chemical Industries 71:. It was the first grade of 7: 2236:Material-handling equipment 2120:Verification and validation 1352:Intermediate bulk container 1134:Self-heating food packaging 405:Medium-density polyethylene 381: 264:A Ziploc bag made from LDPE 89:resin identification code 4 81:free radical polymerization 10: 2476: 1879:Time temperature indicator 411:Polyethylene terephthalate 2412: 2334:Environmental engineering 2309: 2296:Turntable stretch wrapper 2226:Lineshaft roller conveyor 2216:Injection molding machine 2128: 1897: 1527: 1172: 1154:Toothpaste pump dispenser 1014:Disposable food packaging 959: 856:Child-resistant packaging 841: 772:. IDES – The Plastics Web 760:. Exxon Mobil Corporation 393:High-density polyethylene 2221:Label printer applicator 2090:Shearing (manufacturing) 1689:Low-density polyethylene 1109:Pharmaceutical packaging 1079:Low plastic water bottle 969:Alternative wine closure 792:Low-density polyethylene 229:halogenated hydrocarbons 87:estimates 5.7% of LDPE ( 54:Low-density polyethylene 18:Low density polyethylene 2251:Orbital stretch wrapper 1874:Temperature data logger 1794:Pressure-sensitive tape 1654:Humidity indicator card 1182:Aerosol spray dispenser 507:San Francisco Chronicle 442:Dennis Malpass (2010). 1970:Die forming (plastics) 1679:Liquid packaging board 1382:Multilayered packaging 1114:Plastic milk container 1094:Optical disc packaging 322:liquid packaging board 295:Parts that need to be 273: 265: 257: 245: 50: 42: 2399:Sustainable packaging 2349:Life-cycle assessment 2329:Closed-loop box reuse 2276:Seed-counting machine 1609:Corrugated fiberboard 1559:Biodegradable plastic 1282:Corrugated box design 936:Sustainable packaging 926:Shelf-ready packaging 901:Packaging engineering 377:Electrical components 271: 263: 251: 243: 132:intermolecular forces 48: 33: 2369:PET bottle recycling 2231:Logistics automation 1759:Plastic-coated paper 906:Resealable packaging 794:at Wikimedia Commons 388:Film blowing machine 343:, screen cards, and 2450:Packaging materials 2421:Category: Packaging 2256:Packaging machinery 2065:Product development 1864:Tamper-evident band 1704:Modified atmosphere 1044:Foam food container 729:2007JHzM..149..536A 661:2021Chmsp.27730235Q 585:2018PLoSO..1300574R 528:. 18 February 2022. 345:optical disc drives 169:Chemical resistance 2455:British inventions 2384:Reusable packaging 2344:Industrial ecology 2105:Ultrasonic welding 2070:Production control 2020:Injection moulding 1905:Aseptic processing 1614:Corrugated plastic 1484:Steel and tin cans 1454:Shipping container 1392:Packet (container) 1129:Seasonal packaging 1029:Evidence packaging 1009:Currency packaging 1004:Cosmetic packaging 911:Reusable packaging 362:Plastic containers 274: 266: 258: 246: 142:is lower, and its 138:) are weaker, its 51: 43: 2427: 2426: 2389:Reverse logistics 2374:Plastic recycling 2246:Multihead weigher 2166:Cartoning machine 2161:Cap torque tester 2075:Quality assurance 2050:Plastic extrusion 2015:Induction sealing 1985:Extrusion coating 1844:Staple (fastener) 1814:Security printing 1649:Hot-melt adhesive 1222:Biodegradable bag 1064:Glass milk bottle 946:Tamper resistance 886:Package pilferage 861:Contract packager 790:Media related to 526:Good Housekeeping 455:978-0-470-62598-9 350:Playground slides 334:aseptic packaging 27:Chemical compound 16:(Redirected from 2467: 2418: 2417: 2404:Waste management 2394:Source reduction 2211:Industrial robot 2115:Vacuum packaging 2040:Package tracking 1995:Glass production 1955:Corona treatment 1945:Containerization 1809:Screw cap (wine) 1724:Oxygen scavenger 1187:Aluminium bottle 1139:Screw cap (wine) 1084:Luxury packaging 916:Reuse of bottles 881:Package delivery 866:Edible packaging 851:Active packaging 828: 821: 814: 805: 804: 789: 773: 767: 761: 755: 749: 748: 712: 703: 702: 701:. CP Lab Safety. 695: 689: 688: 643: 637: 630: 624: 614: 596: 564: 558: 557: 555: 554: 539: 530: 529: 518: 512: 511: 497: 491: 490: 483: 477: 476: 474: 466: 460: 459: 439: 374:Automotive parts 341:hard disk drives 324:, a laminate of 223:oxidizing agents 155:greenhouse gases 140:tensile strength 112:room temperature 21: 2475: 2474: 2470: 2469: 2468: 2466: 2465: 2464: 2430: 2429: 2428: 2423: 2408: 2364:Paper recycling 2359:Packaging waste 2339:Glass recycling 2311: 2305: 2261:Pallet inverter 2181:Conveyor system 2136:Barcode printer 2124: 2100:Track and trace 2055:Plastic welding 1990:Flame treatment 1960:Curtain coating 1893: 1714:Nonwoven fabric 1699:Metallised film 1604:Container glass 1531: 1529: 1523: 1499:Tub (container) 1397:Padded envelope 1168: 994:Case-ready meat 961: 955: 891:Package testing 843: 837: 832: 782: 777: 776: 768: 764: 756: 752: 713: 706: 697: 696: 692: 644: 640: 579:(8): e0200574. 565: 561: 552: 550: 540: 533: 520: 519: 515: 498: 494: 485: 484: 480: 472: 468: 467: 463: 456: 440: 436: 431: 384: 332:(thus becoming 316:Juice and milk 238: 171: 108: 28: 23: 22: 15: 12: 11: 5: 2473: 2463: 2462: 2460:Food packaging 2457: 2452: 2447: 2442: 2425: 2424: 2413: 2410: 2409: 2407: 2406: 2401: 2396: 2391: 2386: 2381: 2376: 2371: 2366: 2361: 2356: 2351: 2346: 2341: 2336: 2331: 2326: 2324:Can collecting 2321: 2319:Biodegradation 2315: 2313: 2307: 2306: 2304: 2303: 2298: 2293: 2291:Tape dispenser 2288: 2283: 2278: 2273: 2268: 2263: 2258: 2253: 2248: 2243: 2238: 2233: 2228: 2223: 2218: 2213: 2208: 2203: 2198: 2193: 2188: 2183: 2178: 2173: 2168: 2163: 2158: 2153: 2148: 2143: 2141:Barcode reader 2138: 2132: 2130: 2126: 2125: 2123: 2122: 2117: 2112: 2110:Vacuum forming 2107: 2102: 2097: 2092: 2087: 2082: 2077: 2072: 2067: 2062: 2057: 2052: 2047: 2042: 2037: 2032: 2027: 2022: 2017: 2012: 2007: 2002: 2000:Graphic design 1997: 1992: 1987: 1982: 1977: 1972: 1967: 1962: 1957: 1952: 1947: 1942: 1937: 1932: 1927: 1922: 1920:Blow fill seal 1917: 1912: 1910:Authentication 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254:packaging foam 237: 234: 233: 232: 225: 204: 202:vegetable oils 190: 170: 167: 122:LDPE has more 107: 104: 64:made from the 26: 9: 6: 4: 3: 2: 2472: 2461: 2458: 2456: 2453: 2451: 2448: 2446: 2443: 2441: 2438: 2437: 2435: 2422: 2411: 2405: 2402: 2400: 2397: 2395: 2392: 2390: 2387: 2385: 2382: 2380: 2377: 2375: 2372: 2370: 2367: 2365: 2362: 2360: 2357: 2355: 2352: 2350: 2347: 2345: 2342: 2340: 2337: 2335: 2332: 2330: 2327: 2325: 2322: 2320: 2317: 2316: 2314: 2308: 2302: 2299: 2297: 2294: 2292: 2289: 2287: 2284: 2282: 2281:Shrink tunnel 2279: 2277: 2274: 2272: 2269: 2267: 2264: 2262: 2259: 2257: 2254: 2252: 2249: 2247: 2244: 2242: 2239: 2237: 2234: 2232: 2229: 2227: 2224: 2222: 2219: 2217: 2214: 2212: 2209: 2207: 2204: 2202: 2199: 2197: 2194: 2192: 2189: 2187: 2184: 2182: 2179: 2177: 2176:Check weigher 2174: 2172: 2169: 2167: 2164: 2162: 2159: 2157: 2154: 2152: 2149: 2147: 2146:Bottling line 2144: 2142: 2139: 2137: 2134: 2133: 2131: 2127: 2121: 2118: 2116: 2113: 2111: 2108: 2106: 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896:Package theft 894: 892: 889: 887: 884: 882: 879: 877: 876:Overpackaging 874: 872: 869: 867: 864: 862: 859: 857: 854: 852: 849: 848: 846: 840: 836: 829: 824: 822: 817: 815: 810: 809: 806: 799: 796: 793: 788: 784: 783: 771: 766: 759: 754: 746: 742: 738: 734: 730: 726: 722: 718: 711: 709: 700: 694: 686: 682: 678: 674: 670: 666: 662: 658: 654: 650: 642: 636: 634: 629: 622: 618: 613: 608: 604: 600: 595: 590: 586: 582: 578: 574: 570: 563: 549: 548:www.bpf.co.uk 545: 538: 536: 527: 523: 517: 509: 508: 503: 496: 488: 482: 471: 465: 457: 451: 447: 446: 438: 434: 423: 420: 418: 415: 412: 409: 406: 403: 400: 397: 394: 391: 389: 386: 385: 376: 373: 371:Battery cases 370: 367: 364: 361: 358: 356: 355:Plastic wraps 353: 351: 348: 346: 342: 338: 335: 331: 330:aluminum foil 327: 323: 319: 315: 313: 310: 307: 304: 302: 298: 294: 291: 288: 287: 286: 284: 280: 270: 262: 255: 250: 242: 230: 226: 224: 220: 216: 213: 209: 205: 203: 199: 195: 191: 189: 185: 181: 177: 173: 172: 166: 164: 160: 156: 151: 149: 145: 141: 137: 133: 129: 125: 120: 117: 113: 103: 101: 97: 92: 90: 86: 82: 78: 74: 70: 67: 63: 62:thermoplastic 59: 55: 47: 40: 39:resin ID code 37: 32: 19: 2310:Environment, 1925:Blow molding 1854:Stretch wrap 1784:Polyethylene 1774:Plastic wrap 1764:Plastic film 1749:Paper pallet 1688: 1684:Living hinge 1589:Coated paper 1469:Spray bottle 1449:Security bag 1442:Water sachet 1432:Salvage drum 1427:Retort pouch 1332:Glass bottle 1227:Blister pack 1192:Aluminum can 1159:Water bottle 1059:Gas cylinder 1034:Field ration 931:Shelf-stable 765: 753: 720: 716: 693: 652: 648: 641: 625: 576: 572: 562: 551:. Retrieved 547: 516: 505: 495: 481: 464: 444: 437: 417:Stretch wrap 359:Plastic bags 320:are made of 283:plastic bags 275: 236:Applications 219:mineral oils 215:hydrocarbons 152: 121: 109: 93: 73:polyethylene 57: 53: 52: 2440:Polyolefins 2206:Heat sealer 2171:Case sealer 2045:Papermaking 1965:Die cutting 1930:Calendering 1834:Shrink wrap 1709:Molded pulp 1694:Meat diaper 1659:Kraft paper 1639:Foam peanut 1629:Double seam 1599:Coextrusion 1569:Bubble wrap 1549:Bail handle 1494:Thermal bag 1417:Plastic bag 1232:Boil-in-bag 1164:Wine bottle 1149:Spray paint 1104:Popcorn bag 1099:Oyster pail 984:Beer bottle 649:Chemosphere 489:. Ceresana. 252:A piece of 2434:Categories 2286:Staple gun 2266:Palletizer 2156:Can seamer 2025:Lamination 1950:Converting 1839:Slip sheet 1754:Paperboard 1619:Cushioning 1579:Cellophane 1554:Bioplastic 1532:components 1519:Wooden box 1489:Tetra Brik 1412:Paper sack 1387:Multi-pack 1337:Gunny sack 1207:Bag-in-box 1174:Containers 1039:Flour sack 1024:Egg carton 999:Coffee bag 979:Banana box 921:Shelf life 655:: 130235. 553:2018-06-14 429:References 413:(PET/PETE) 368:Housewares 326:paperboard 301:machinable 150:is lower. 144:resilience 106:Properties 2379:Recycling 2186:Drum pump 2129:Machinery 1980:Extrusion 1898:Processes 1869:Tear tape 1859:Susceptor 1849:Strapping 1804:Screw cap 1779:Polyester 1624:Desiccant 1528:Materials 1509:Unit load 1464:Skin pack 1407:Paper bag 1277:Clamshell 1019:Drink can 951:Wrap rage 835:Packaging 800:. epa.gov 685:232764239 633:CC BY 4.0 603:1932-6203 208:aliphatic 194:aldehydes 130:, so its 124:branching 34:LDPE has 2445:Plastics 2312:post-use 2201:Heat gun 2151:Calender 2060:Printing 1889:Velostat 1884:Tinplate 1719:Overwrap 1644:Gel pack 1634:Flip-top 1539:Adhesive 1474:Squround 1377:Mesh bag 1362:Jerrycan 1307:Envelope 1247:Bulk box 1124:Sand bag 1089:Milk bag 1074:Juicebox 989:Box wine 962:packages 745:17681427 677:33794435 635:license. 621:30067755 573:PLOS ONE 424:(UHMWPE) 382:See also 297:weldable 212:aromatic 180:alcohols 163:ethylene 116:solvents 69:ethylene 2035:Molding 1940:Coating 1935:Canning 1594:Coating 1584:Closure 1342:Inhaler 1197:Ampoule 1069:Growler 960:Product 842:General 725:Bibcode 657:Bibcode 612:6070199 581:Bibcode 401:(LLDPE) 318:cartons 198:ketones 159:methane 148:density 66:monomer 60:) is a 2419:  2354:Litter 2196:Filler 1739:Pallet 1437:Sachet 1302:Endcap 1267:Carton 1262:Carboy 1237:Bottle 1217:Barrel 844:topics 743:  683:  675:  619:  609:  601:  452:  407:(MDPE) 395:(HDPE) 279:molded 221:, and 200:, and 188:esters 186:, and 1744:Paper 1664:Label 1564:BoPET 1287:Crate 681:S2CID 542:BPF. 473:(PDF) 365:Pipes 184:bases 176:acids 1574:Bung 1514:Vial 1504:Tube 1402:Pail 1297:Drum 1272:Chub 1257:Case 1252:Cage 741:PMID 673:PMID 617:PMID 599:ISSN 450:ISBN 299:and 210:and 161:and 128:HDPE 58:LDPE 1669:Lid 1530:and 1372:Keg 1367:Jug 1357:Jar 1242:Box 1212:Bag 733:doi 721:149 665:doi 653:277 607:PMC 589:doi 98:or 85:EPA 36:SPI 2436:: 739:. 731:. 719:. 707:^ 679:. 671:. 663:. 651:. 615:. 605:. 597:. 587:. 577:13 575:. 571:. 546:. 534:^ 524:. 504:. 336:). 217:, 196:, 182:, 178:, 157:: 102:. 827:e 820:t 813:v 747:. 735:: 727:: 687:. 667:: 659:: 623:. 591:: 583:: 556:. 510:. 458:. 231:. 134:( 56:( 41:4 20:)

Index

Low density polyethylene

SPI
resin ID code

thermoplastic
monomer
ethylene
polyethylene
Imperial Chemical Industries
free radical polymerization
EPA
resin identification code 4
No. 1 (polyethylene terephthalate)
2 plastics (high-density polyethylene)
room temperature
solvents
branching
HDPE
intermolecular forces
instantaneous-dipole induced-dipole attraction
tensile strength
resilience
density
greenhouse gases
methane
ethylene
acids
alcohols
bases

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