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  2. Linear low-density polyethylene - Wikipedia

    en.wikipedia.org/wiki/Linear_low-density...

    Linear low-density polyethylene (LLDPE) is a substantially linear polymer (polyethylene), with significant numbers of short branches, commonly made by copolymerization of ethylene with longer-chain olefins. Linear low-density polyethylene differs structurally from conventional low-density polyethylene (LDPE) because of the absence of long chain ...

  3. Low-density polyethylene - Wikipedia

    en.wikipedia.org/wiki/Low-density_polyethylene

    LDPE has SPI resin ID code 4 Schematic of LDPE branching structure. Low-density polyethylene (LDPE) is a thermoplastic made from the monomer ethylene.It was the first grade of polyethylene, produced in 1933 by John C. Swallow and M.W Perrin who were working for Imperial Chemical Industries (ICI) using a high pressure process via free radical polymerization. [1]

  4. Polyethylene - Wikipedia

    en.wikipedia.org/wiki/Polyethylene

    The plastic type which releases gases at the highest rate is low-density polyethylene (LDPE). Due to its low density it breaks down more easily over time, leading to higher surface areas. When incubated in air, LDPE emits gases at rates ~2 times and ~76 times higher in comparison to incubation in water for methane and ethylene, respectively.

  5. Geomembrane - Wikipedia

    en.wikipedia.org/wiki/Geomembrane

    The US market is currently divided between HDPE, LLDPE, fPP, PVC, CSPE-R, EPDM-R and others (such as EIA-R and BGMs), and can be summarized as follows: [citation needed] (Note that Mm 2 refers to millions of square meters.) high-density polyethylene (HDPE) ~ 35% or 105 Mm 2; linear low-density polyethylene (LLDPE) ~ 25% or 75 Mm 2

  6. Cross-linked polyethylene - Wikipedia

    en.wikipedia.org/wiki/Cross-linked_polyethylene

    A cross-linked polyethylene (PEX) pipe. Cross-linked polyethylene, commonly abbreviated PEX, XPE or XLPE, is a form of polyethylene with cross-links.It is used predominantly in building services pipework systems, hydronic radiant heating and cooling systems, domestic water piping, insulation for high tension (high voltage) electrical cables, and baby play mats.

  7. Plasticulture - Wikipedia

    en.wikipedia.org/wiki/Plasticulture

    Polyethylene (PE) is the plastic film used by the majority of growers because of its affordability, flexibility and easy manufacturing. [3] It comes in a variety of thicknesses, such as a low density form (LDPE) as well as a linear low density form (LLDPE).

  8. Plastic wrap - Wikipedia

    en.wikipedia.org/wiki/Plastic_wrap

    It is less adhesive than PVC, but this can be remedied by adding linear low-density polyethylene (LLDPE), which also increases the film's tensile strength. [ 5 ] In the US and Japan, plastic wrap is sometimes produced using polyvinylidene chloride (PVdC), though some brands, such as Saran wrap, have switched to other formulations due to ...

  9. Polymer engineering - Wikipedia

    en.wikipedia.org/wiki/Polymer_engineering

    Polymer engineering is generally an engineering field that designs, analyses, and modifies polymer materials. Polymer engineering covers aspects of the petrochemical industry, polymerization, structure and characterization of polymers, properties of polymers, compounding and processing of polymers and description of major polymers, structure property relations and applications.