Gse ultraflex is an lldpe linear lowdensity polyethylene geomembrane developed to meet the specific needs of the mining industry. To find out more about what cookies are, how we use them and how to delete them, see our cookie statement. Lldpe manufactured by opal shall meet the requirement stipulated in is. Linear lowdensity polyethylene lldpe is a substantially linear polymer polyethylene, with significant numbers of short branches, commonly made by copolymerization of ethylene with longerchain olefins. An increase in youngs modulus with an increase in wax content was observed for the ldpe and lldpe blends, indicating that the modulus of the wax is higher than those of both polymers. February 26, 2014 the dow chemical company page 2 of 7 film 63.
Lldpe pvc pp coking coal coke iron ore ethylene glycol ethenylbenzene iron ore options. Ive had to write a lot of design documents over the years, and have come up with an approach that works for me. Hld and lld are 2 terms used commonly in network design, operation and implementation. There are 6 material properties with values for both materials.
Our stateoftheart technical service center and film extrusion team are dedicated to assisting customers with processing and application development projects. Lower backpressure can directly translate to lower electricity bills, offering the potential to help save you money. After a discussion some notes may be written down, some acceptance criteria worked out. Degradation of linear low density polyethylene lldpe.
Its superior textured surface allows for increased friction between the two layers and the design of steeper slopes. Hld high level design hld is the overall system design covering the system architecture and database design. It has all of the chemical resistant properties of lldpe and is an excellent choice for conveying liquids. Software development life cycle sdlc simplified duration. Looking for online definition of lld or what lld stands for. Ips packaging 10 jack casey court fountain inn, sc 29644 phone.
February 26, 2014 the dow chemical company page 3 of 7 injection molding industrial containers, trash cans, lawn and garden products, kitchen accessories, luggage and furniture. Material safety data sheet linear low density polyethylene. Lldpe linear low density polyethylene is defined by a density range of 0. Lldpe also has a higher tensile strength than ldpe and greater puncture resistance robertson, g. As the side chains introduced become longer, strength and lowtemperature resistance become higher. What is the difference between hdpe, lldpe and ldpe. Linear low density polyethylene lldpe manufacture via gasphase process. How to write an effective design by using hld and lld in. Highlevel design hld explains the architecture that would be used for developing a software product. Lldpe is blended form of ldpe where the film has much more flexibility, tensile strength, and more conformability.
Lldpe plastic liner linear low density polyethylene. Enviroflex linear low density polyethylene lldpe geomembranes provide much of the same durability and resistance properties found in high density polyethylene hdpe geomembranes, but with the added benefit of increased material flexibility because it is a lowerdensity polymer. Our stateoftheart technical service center and film extrusion team are dedicated to assisting customers with. If you require increased frictional performance, flexibility and elongation, linear low density polyethylene lldpe liners textured geomembranes are the best product choice.
China lldpe spot price, china lldpe daily prices provided. Looking for online definition of lldpe or what lldpe stands for. For a simple non distributed system hld can be just logical layering and interaction between them and lld can be actual class and method structures in those layers. Start your software development journey with us today. The architecture diagram provides an overview of an entire system, identifying the main components that would be developed for the product and their interfaces. Linear low density polyethylene lldpe resins revised. Linear low density polyethylene aramco lldpe f2122bs. Properties predictor for hdpeldpelldpe blends for shrink. In the late 1970s, the characteristic bulbous profile of a unipol gasphase lldpe reactor was a new shape on the polyethylene landscape. Exhibits higher impact and puncture resistance than ldpe.
Lyondellbasell produces petrothene linear low density polyethylene lldpe at two manufacturing locations. The resin exhibits excellent toughness and strength when drawn down to thin gauges. To prepare the lldpe films with a minimum amount of additives, a phenol type antioxidant tetrakismethylene33,5ditbutyl4hydroxyphenylpropionatemethane. Lldpe textured geomembranes if you require increased frictional performance, flexibility and elongation, gse lldpe textured geomembranes are the best product choice. Agricultural multi indices industrial multi indices single commodity indices custom indices. Product safety assessment linear low density polyethylene. Detailed price lists for resins and polymers of raw material. It describes the relation between various modules and functions of the system. Rolls are 23 feet wide and vary in length depending on the thickness of the geomembrane. A patients exposure to substances extracted from a plastic packaging component e. The degree of crystallinity of wax, ldpe and lldpe are 58.
China lldpe spot price, china lldpe daily prices provided by. Linear lowdensity polyethylene differs structurally from conventional lowdensity polyethylene ldpe because of the absence of long chain branching. The copolymerization process produces an lldpe polymer having a narrower distribution in the molecular weight than ldpe and in combination with the linear structure, significantly other properties. It provides a high level view of overall system setup describing relationship of various systems and functions which combine to provide the expected solution. The hld uses possibly nontechnical to mildly technical terms that should be. Flexibility is also affected negatively by a greater wall thickness. Linear low density polyethylene lldpe 2b1stconsulting. The hld documentation presents the structure of the system, such as the database architecture, application architecture layers, application flow navigation, and technology architecture. Mdpe medium density polyethylene has a little less branching then the hdpe. High level design gives the overall system design in terms of functional architecture. A highlevel design hld is based on the haiku structure and. In order to reduce the number of experiments, two variables were introduced. I 2 special characteristics typical applications astm d1505 astm d1238 s f2001 a 920 0. Properties with values for just one material 10, in this case are not shown.
Badlands ngl and vinmar to monetize us shale gas the delawareregistered company badlands ngls llc badlands ngl and vinmar projects vinmar from houston, texas, signed a memorandum of understanding mou to design, build, operate a worldscale polyethylene greenfield plant and merchant its production out of north dakota shale gas basins. However typically written requirements are pretty light in agile processes. The purpose of this high level design hld document is to add the necessary detail to the current project description to represent a suitable model for coding. Aramco lldpe f2122bs product description aramco lldpe f2122bs is a linear low density polyethylene resin and is typically used for blown film applications. Writing a high level design david van couvering medium. It is easy to process and can be blended with a variety of materials, like eva, other polyolefins, fillers, pigments to alter. It is similar to hdpe, but is lower in density, thus being more flexible. Gps ll textured is a textured membrane that is manufactured with prime resins and have outstanding frictional resistance, chemical resistance and mechanical properties as well as uv resistance. The cookie settings on this website are set to allow all cookies to give you the very best experience. Whats the difference between ldpe, lldpe, mdpe, hdpe, xlpe. Our superior textured surface allows for increased friction between the two layers and the design of steeper slopes in applications such as. Software design documents hld and lld software testing.
Linear low density polyethylene lldpe grade basket typical applications r opal grade density kgm3 mfi g10 min. Hdpe vs lldpe vs ldpe global plastic sheeting, inc. Difference between ldpe and lldpe tubing tbl plastics. Scg lldpe l1810fi is a butene lldpe resin with slip and antiblocking agent. I actually generally avoid writing up design documents at that level of detail because the details.
Films made from this resin typically exhibits high transparency, good toughness and good extrusion characteristics. Typically backlogs are filled with stories, stories are mostly invitations to have a design discussion. Your hld and lld documents sounds heavier then what might be common. As mukesh mentioned it depends on the complexity of the system you are designing and the depth of information your organization goes into with respect to these. Lldpe is generally shipped to job sites in large rolls and deployed by machines. While hld refers to high level design, lld is abbreviation for low level design hld is created initially during the design journey of a solution. Metallocene linear low density polyethylene mlldpe c8. For each property being compared, the top bar is eva and the bottom bar is lldpe.
Note that it has low pressure ratings, particularly in warm environments. Additives incorporated in this product shall conform to the positive list of constituents as prescribed in is. Polyethylene or pe is the largest volume commodity thermoplastic and cheapest packaging film. Processing performance the outstanding reputation of dowlex resins for ease of processing is retained with these nextgeneration resins, thus lowering backpressure requirement.
Linear low density polyethylene lldpe efficiency finder. Lldpe liner is designed to be used when higher elongation properties are required. The main technologies suitable for lldpe production include slurry, solution and gasphase. What is the difference between them and why it is important to have a good technical documentation for your project. Lldpe is used for pond liners or blended into other films to give them more flexibility and extra strength. This is associated with its higher degree of crystallinity. High level design hld is the overall system design covering the system architecture and database design. Chevron phillips chemical produces highperformance linear lowdensity polyethylene lldpe hexene resins using gas phase reactor technology.
This page has links to all data sheets in matweb for the tradename lldpe. Comparison of ldpe, lldpe and hdpe as matrices for phase. Top polymers is sister concern of top rank was formed in the year 1987. Polyethylene lldpe manufacture technology free library. If you continue without changing these settings, you consent to this but if you want, you can change your settings at any time at the bottom of this page. Lldpe geomembranes offer durable containment lining systems. Lower thickness gauge films can be blown compared to ldpe, with better environmental stress cracking resistance compared to ldpe. Gps ll textured lldpe linear low density polyethylene. This resin has a relatively high melt index that makes it easier to process. Additives incorporated in this product shall conform to the positive list.
Solution ponds and heap leach pads used in the mining process require the most durable containment lining systems available. It is recommended for waterquenched blown film for vegetable or fruit packaging with high clarity and good openability. Lld is listed in the worlds largest and most authoritative dictionary database of abbreviations and acronyms the free dictionary. Lldpe has a higher resistance to tensile and impact than ldpe, and a resistance to breakage much better than this one. Class diagrams with all the methods and relation between classes comes under lld. High level modeling to support software design gaudi system. Cooling time t e and stretch ratio r a, which can be. What are the differences between hld and lld in a software. Linear lowdensity polyethylene lldpe page content petro rabigh offers a wide range of linear lowdensity polyethylene lldpe grades featuring balanced toughness and stiffness and suitable for a variety of film application such as general purpose film, stretch film, garment packaging, agricultural film, etc.
Lldpe has penetrated almost all traditional markets for polyethylene. The architecture diagram provides an overview of an. It defines the actual logic for each and every component of the system. Highlevel design stories in architecturecentric agile development. Linear lowdensity polyethylene lldpe is a copolymer of ethylene and longerchain alphaolefins, manufactured on commercial scale via lowpressure polymerization processes.
Its superior textured surface allows for increased friction between the two layers and the design. The physical properties of lldpe vary as shown in the figures below, depending on the levels of the molecular weight mfr and density. This gives lldpe higher tensile strength and higher impact and puncture resistance than the ldpe. Linear low density polyethylene lldpe resin butene copolymer for film extrusion applications formolene l42009b is a generalpurpose film grade linear low density made using gasphase technology. Linear low density polyethylene lldpe is the most flexible of the plastic sheeting films. Since ldpe is a weaker tubing than lldpe a thicker wall grade can be chosen to compensate, but this has cost implications if a large amount of tubing is required. It is easy to process and can be blended with a variety of materials, like eva, other polyolefins, fillers, pigments to alter its basic properties. Detailed price lists for resins and polymers of raw.
Low level design lld also known as a detailed design, is used to design internals of the individual modules identified during hld i. The models are made at different levels to guide software design choices. The geomembranes are textured by a nitrogen injection. Lldpe has higher tensile strength than ldpe, it exhibits higher impact and puncture. We have several search tools, listed above, that give you more efficient methods to reach the information that you need. Linear low density polyethylene lldpe polyamerica offers linear low density polyethylene lldpe smooth geomembranes in thicknesses of.