Polyethylene paper

Reneker, D. H., and L. H. Bolz. Effect of atomic oxygen on the surface morphology of polyethylene. Paper Presented at Symposium on Plasma Chemistry of Polymers, American Chemical Society Meeting, Philadelphia, April 6-11, 1975. 

Shell Research Ltd. Carrington Plastics Lab., Ziegler Polyethylene Paper... 

Life cycle stages Paper Polyethylene Paper Polyethylene... 

Table 1.2) based on State Standard 27597 [93]. Kanzaki s method is, for example, employed in South Korean steel mill works for the estimation of the protective ability of packing materials based on inhibited polyethylene-paper laminates. 

Aseptic packaging. Aseptic packaging has been dominated by flexible packs for liquid foods and those containing small particle size solids suspended. The flexible packs have been somewhat varied but are mainly the polyethylene/paper/foil/polyethylene or similar brick structures sterilised with hydrogen peroxide as used in Tetrapack or Combibloc machines. 

Westerlind B, Larsson A, Rigdahl M. Detennination of the degree of adhesion in plasma-treated polyethylene/paper laminates. Int J Adhes Adhes 1987 7 141-146. 

Abstract. This paper presents results from quantum molecular dynamics Simula tions applied to catalytic reactions, focusing on ethylene polymerization by metallocene catalysts. The entire reaction path could be monitored, showing the full molecular dynamics of the reaction. Detailed information on, e.g., the importance of the so-called agostic interaction could be obtained. Also presented are results of static simulations of the Car-Parrinello type, applied to orthorhombic crystalline polyethylene. These simulations for the first time led to a first principles value for the ultimate Young s modulus of a synthetic polymer with demonstrated basis set convergence, taking into account the full three-dimensional structure of the crystal. 

The work presented in this paper was the result of the joint effort with the following colleagues. For the simulations on catalysis Simonetta larlori (IBM Italy), Franco Buda (Scuola NormaJe Superiore, Pisa, Italy) and Gerard van Doremaele (DSM Research) were involved. For the work on polyethylene the simulations were performed by Joost Hageman, with help from Martina Heinemann and Rob de Groot (all University of Nijmegen, The Netherlands). 

PH)PE [OLEFIN POLYTffiRS - POLYETHYLENE - HIGH DENSITY POLYETHYLENE] (Vol 17) -as paper contamnants [RECYCLING - PAPER] (Vol 21)... 

R. C. Winckihofer, "Extended Chaiu Polyethylene Fiber New Technology/New Horizons," paper presented at TAPP11985 Nomrovens Sjmposium,... 

In extmsion coating a polymer is extmded from a slot die into the nip of two roUs where it is bonded to a substrate under pressure (Fig. 6). A corona discharge may be appUed to the substrate just prior to the nip to enhance adhesion. Polyethylene or ionomer are the most common resins used in extmsion coatings. They provide improved moisture barrier (on paper), or sealabUity (on foU, polypropylene, or polyester). When a second substrate is introduced to the nip, laminated stmctures may be produced. 

Cheese products generally must be maintained under refrigeration using closed flexible plastic, or plastic cups or tubs for packaging. Ice cream packaging is generally minimal, ie, lacquered or polyethylene extmsion-coated paper-board cartons, molded plastic tubs, or spinal wound composite paperboard tubs or cartons. 

Margarine and butter contain fat plus water and water-soluble ingredients, eg, salt and milk soHds that impart flavor and color to the product. Generally these products are distributed at refrigerated temperatures to retain their quaHty. Greaseproof packaging, such as polyethylene-coated paperboard, aluminum foil/paper, parchment paper wraps, and polypropylene tubs, is used for butter and margarine (see Dairy substitutes). 

Flexographic Inks. Fluorescent toners such as the Radiant GF, Lawter HVT, and Day-Glo HM and HMS Series toners are used in flexographic ink formulations. These products are soluble in blends of alcohol (80%) and ester solvents (20%) and are compatible with modifying materials such as nitroceUulose resins and acryHc solution polymers. Flexographic inks of this type are used most commonly to print products such as ceUophane and polyethylene film for packaging, and also to print paper products such as gift wrap and price labels. 

Packaging. Most LDPE is packaged in railway hopper cars of 63.5 t capacity, although tmcks of 20 t capacity are also used. Conversely, smaller quantities are packaged either in 500-kg boxes or in 25-kg paper or polyethylene bags. 

Dry oxahc acid is packed and sold in polyethylene-lined, multilayered 25-kg paper bags or in polyethylene-lined 300—600-kg PVC flexible containers. It should be stored in a cool, dry, ventilated place. For storage of its solutions at ordinary temperature, 316 stainless steel is often used as a constmction material. 

Corrosion. Anticorrosion measures have become standard ia pipeline desiga, coastmctioa, and maintenance ia the oil and gas iadustries the principal measures are appHcation of corrosion-preventive coatings and cathodic protection for exterior protection and chemical additives for iaterior protectioa. Pipe for pipelines may be bought with a variety of coatiags, such as tar, fiber glass, felt and heavy paper, epoxy, polyethylene, etc, either pre-apphed or coated and wrapped on the job with special machines as the pipe is lowered iato the treach. An electric detector is used to determine if a coatiag gap (hoHday) exists bare spots are coated before the pipe is laid (see Corrosion and corrosion control). 

Functional derivatives of polyethylene, particularly poly(vinyl alcohol) and poly(acryLic acid) and derivatives, have received attention because of their water-solubility and disposal iato the aqueous environment. Poly(vinyl alcohol) is used ia a wide variety of appHcations, including textiles, paper, plastic films, etc, and poly(acryLic acid) is widely used ia detergents as a builder, a super-absorbent for diapers and feminine hygiene products, for water treatment, ia thickeners, as pigment dispersant, etc (see Vinyl polymers, vinyl alcohol polymers). 

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