Method for reducing sheeting and static charges

1995-2-21  A method for reducing sheeting during polymerization of an alpha-olefin by feeding either a positive charge generating (MgO, ZnO, Al 2 O 3, CuO, and mixtures thereof) or a negative charge generating (V 2 O 5, SiO 2, TiO 2, Fe 2 O 3, and mixtures thereof) inorganic chemical additive to the reactor responsive to particular static levels in the reactor.The chemical additive is added in amounts

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US7812103B2 Method for reducing sheeting and

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CA2402072C Method for reducing sheeting and

The present invention relates to a method for reducing/suppressing sheeting or agglomerates during polymerisation of olefins, especially during the fluidised bed gas phase polymerisation of olefins. In particular, the present invention relates to a method for reducing/suppressing sheeting or agglomerates during the product grade transition and/or catalyst transitions occuring polymerisation of

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Method for reducing sheeting during polymerization

1989-2-7  A method for reducing sheeting during polymerization of alpha-olefins by feeding either a positive charge generating or negative charge generating chemical additive to the reactor responsive to particular static levels in the reactor. The chemical additive is added in amounts which neutralize the charges in the reactor.

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Method for reducing sheeting during polymerization

A method for reducing sheeting during polymerization of alpha-olefins in a fluidized bed employing catalysts prone to cause sheeting which comprises feeding an inert material in particle or powder form carrying a static electric charge opposite to the static charge in said bed, said opposite charge of said material being generated by passing

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Bitumen Coating versus Plastic Sheeting for Reducing

Additional reduction was achieved by lubricating the polyethylene sheets with oil. The effectiveness of oil-lubricated polyethylene sheets in reducing skin friction was about 94%. Factors that affect the shearing behavior of bitumen coating did not influence the friction characteristics of the polyethylene sheeting.

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ISO 8296-2003 塑料.薄膜和薄板.湿润表面张力的测定 标准

ISO 8296-2003,1 This International Standard specifies a method for determining the wetting tension of surfaces of plastic film and sheeting in contact with drops of specific test solutions. 2 The ability of plastic films to retain inks, coatings, adhesives, etc., is

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Vehicles at work Sheeting and unsheeting

2020-7-18  Sheeting and unsheeting these are more specific for reducing risks from falls. A risk assessment should: identify the hazards; give the likelihood or risk of these hazards causing an injury; Although this method avoids the driver needing to access the vehicle load and is as effective as conventional sheeting in preventing damage to the

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Developing design guidelines for load carrying sheet

2018-4-19  The method of pressing sheet metal also enables more complex geometries and thus makes it Another way of reducing the weight of these components is to consider completely different materials than conventional steel or aluminium. A lot of composite materials possess favourable material properties, such as high strength-to-weight ratio.

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SL Group 3 Fire Retardant Sheeting Ampelite

Surface Finish Properties have been tested to ISO 5660 and achieved a group number 3 performance in accordance with NZBC Verification Method C/VM2 Appendix. Eliminates 99% of harmful ultra violet rays. Available in range of colours including clear or IR heat reducing sheeting and also as a solid colour sheet for corrosive environments.

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Method of reducing slumping in pie dough Patent

A method of reducing slumping in pie dough crust and the product resulting from that method. The method comprises dusting pie dough with limestone either before or after sheeting the dough.

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Bitumen Coating versus Plastic Sheeting for Reducing

Additional reduction was achieved by lubricating the polyethylene sheets with oil. The effectiveness of oil-lubricated polyethylene sheets in reducing skin friction was about 94%. Factors that affect the shearing behavior of bitumen coating did not influence the friction characteristics of the polyethylene sheeting.

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etection of sheeting in polyethylene gas-solid fluidized bed

1989-10-24  The method estimated the position of sheeting through changes of EC’s mean value (MV) and standard deviation (STD). Results showed that EC’s MV and STD in the bed without sheeting were axial symmetrical, while the formation of sheeting on the column wall and asymmetrical sheeting on the distributor destroyed the symmetry of EC in a certain region.

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Standard Test Method for Impact Resistance of Flat, Rigid

2015-11-19  of sheeting was constant at drop heights between 0.30 and 1.4 m. Different materials respond differently to changes in the velocity of impact. 5.2 The test conditions used in Geometry GA are the same as those used in Geometry FA of Test Method D 5628 (see Table 1). 5.3 The test conditions of Geometry GB are equivalent to

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Developing design guidelines for load carrying sheet

2018-4-19  The method of pressing sheet metal also enables more complex geometries and thus makes it Another way of reducing the weight of these components is to consider completely different materials than conventional steel or aluminium. A lot of composite materials possess favourable material properties, such as high strength-to-weight ratio.

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(PDF) Standard Test Method for Tensile Properties of

Reducing the cross-sectional area of the speci- Supporting data on the introduction of the L specimen of T est Method D1822 as the Type V specimen are 10.1.3 For thin sheeting, including

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DIN ISO 8296-2006 塑料.薄膜和薄板.湿润表面张力的测定 标准

DIN ISO 8296-2006,1.1 This International Standard specifies a method for determining the wetting tension of surfaces of plastic film and sheeting in contact with drops of specific test solutions. 1.2 The ability of plastic films to retain inks, coatings, adhesives, etc., is

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ASTM D1746 Standard Test Method for

This test method covers the measurement of the transparency of plastic sheeting in terms of regular transmittance (T r). Although generally applicable to any translucent or transparent material, it is principally intended for use with nominally clear and colorless thin sheeting. The values stated in SI units are to be regarded as the standard.

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OSHA Fact Sheet: Reducing Falls During Residential

Reducing Falls During Residential Construction: Installing Roof Trusses Every year, residential construction workers experience numerous fatal injuries due to falls. Installing roof trusses presents several challenges for protecting workers from these falls. This fact sheet highlights some of the hazards of truss installation and lists some

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THERMAL SHRINKAGE OF PLASTIC FILM AND SHEETING

2015-12-16  THERMAL SHRINKAGE OF PLASTIC FILM AND SHEETING . This stone reviews the definition and meaning of thermal shrinkage of plastic film and sheeting. For purposes of this , film is defined as a thin (less than 40 mils) plastic used in roll form. A sheet is a thick plastic usually over 40 mils that is used in a sheet form.

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Vehicles at work Sheeting and unsheeting

2020-7-18  Sheeting and unsheeting these are more specific for reducing risks from falls. A risk assessment should: identify the hazards; give the likelihood or risk of these hazards causing an injury; Although this method avoids the driver needing to access the vehicle load and is as effective as conventional sheeting in preventing damage to the

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(PDF) Standard Test Method for Tensile Properties of

Reducing the cross-sectional area of the speci- Supporting data on the introduction of the L specimen of T est Method D1822 as the Type V specimen are 10.1.3 For thin sheeting, including

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Standard Test Method for Transparency of Plastic

1. Scope. 1.1 This test method covers the measurement of the transparency of plastic sheeting in terms of regular transmittance (T r).Although generally applicable to any translucent or transparent material, it is principally intended for use with nominally clear and colorless thin sheeting.

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A Novel Method to Assess the Mechanical Behavior of

Cereal Chem. 80(6):707–711 Dough development using sheeting and mechanical dough devel-opment (MDD) were compared with respect to the effect the mixing method had on the molecular size

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Fatigue performance of profiled steel

2020-6-15  A new method for calculating the deflection of profiled steel sheeting–concrete composite slabs based on a discontinuous stiffness is proposed, and the deformation and internal force components of composite plates are deduced theoretically. The midspan deflection and end-slip calculated via this method are close to the experimental values.

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FOP AASHTO R 47 (19)

2019-10-10  d. Continue using the apex method with the unused portion of the asphalt mixture until samples have been obtained for all required tests. e. Retain and properly identify the remaining unused portion of the asphalt mixture sample for further testing if required by the agency. Incremental Method . 1. Cover a hard, clean, level surface with sheeting.

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OSHA Fact Sheet: Reducing Falls During Residential

Reducing Falls During Residential Construction: Installing Roof Trusses Every year, residential construction workers experience numerous fatal injuries due to falls. Installing roof trusses presents several challenges for protecting workers from these falls. This fact sheet highlights some of the hazards of truss installation and lists some

get price

THERMAL SHRINKAGE OF PLASTIC FILM AND SHEETING

2015-12-16  THERMAL SHRINKAGE OF PLASTIC FILM AND SHEETING . This stone reviews the definition and meaning of thermal shrinkage of plastic film and sheeting. For purposes of this , film is defined as a thin (less than 40 mils) plastic used in roll form. A sheet is a thick plastic usually over 40 mils that is used in a sheet form.

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How to Clean, Fix, and Maintain Acrylic Sheeting

Reducing Static Electricity. Acrylic plastic is a natural conductor of electricity. The static electricity charge can attract dirt and debris from the air and cause buildup. To reduce and eliminate static electricity buildup, use an anti-static cleaner for with a soft cloth. This should neutralize the acrylic sheeting, and reduce

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National Center for Biotechnology Information

National Center for Biotechnology Information

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