Borealis Technology Oy

Svein Stall Eggen

Siw Bodil Fredriksen

Irene Helland

Katrin Nord-Varhaug

Remko Van Marion

Jorunn Nilsen

Hege Vale Baann

Kim Esbensen

Mats Halstensen

Petter Asrud

Lars Thorn

The present invention relates to a film comprising at least one layer comprising an ethylene homo- or copolymer which has a complex viscosity at 5 kPa shear stress eta5 of 200,000 or less and a shear thinning index SHI(5/300) measured at 190&#xb0; C. as the ratio between the complex viscosity at 5 kPa shear stress and the complex viscosity at 300 kPa shear stress of 120 or more.

Polyethylene film with improved processability and mechanical properties

The present invention relates to a polyethylene composition wherein (i) the composition has an MFRof 0.05 to 100 g/10 min, (ii) the environmental stress crack resistance ESCR measured in hours according to ASTM 1693, condition B and E-modulus EM measured according to ISO 527-2: 1993 in MPa satisfy the following relation: ESCR&#x3e;&#x2212;EM h/MPa+1150 h.

Polyethylene composition for injection moulding with improved stress crack/stiffness relation and impact resistance

Medium to large volume containers having improved environmental stress crack resistance are blow moulded from bimodal high density polyethylene.

Container production process

The present invention relates to a method and apparatus of determining the rheological properties of a polymer flowing in a conduit. The invention provides a method of characterising a polymer under test, comprising: Detecting acoustic emissions from said polymer flowing in a conduit to provide acoustic emission data, comparing the acoustic emissions data obtained against acoustic emission data from a polymer, or a series of polymers, of known characteristics, and thereby characterising the polymer.

Viscosity measurement

A method and apparatus for studying the properties of a fluid are provided in which in which a rheometer is used to obtain, for example, value(s) indicative of the shear stress in the fluid to thereby obtain a set of data. The data is then directly compared using, for example, multivariate analysis, with previously obtained data corresponding to a fluid(s) with known rheological properties. The results of this comparison can then be used, for example, to control a manufacturing process.

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Langangen, Norway

Svein Stall Eggen