PVC foil

Test Results. The three biocides as listed under 2.1 were incorporated in calandered flexible PVC foils which were investigated according to the NSA test. Table 1 gives an overview on the test results. 

Confirmation of the reaction mechanism was performed by heating samples of the suspect lot of the PVC foil with deuterated methanol. The authors selected methanol as it would not interfere and would form the analogous methyl... 

THEORETICAL STUDY OF THE KINETICS OF LOSS OF PLASTICISER FROM PLASTICISED PVC FOILS... 

A kinetic model of the physical process of loss of plasticiser di-(2-ethylhexyl)-phthalate from plasticised PVC foil is developed. Experimental investigations are carried out using isothermal thermogravimetry in the temperature range of 120-150 deg.C. The thickness of the foil is 0.1 mm and the amount of the plasticiser in the plasticised polymer is 10-40%. The kinetic parameters... 

A major use of PVC in the building industry is for roofing sheets. These sheets are produced on calenders and contain in most cases two plasticized PVC foils that are reinforced by glass fiber or polyester fabrics. The used sheets show different properties, depending on whether they are applied under direct influence of light and weather conditions and on the fact that in some cases these sheets on the roof are loaded with... 

Lower application temperatures lower molar masses and lower softening and melting temperatures. Proeessing of heat suseeptible adherends, e.g., PVC foils, is possible, for example at a processing temperature of 70°C. The heat resistance of the bondline is up to 120°C. 

Chem. Descrip. N-Butylmethaciylate/MMA Uses Binder for formulation of h t-seal lacquers for aluminum and PVC foils food-contact coatings Features Sealable against PVC and PS Regulatory FDA 21 CFR 175.300... 

Polyvinylchloride (PVC) foil has a low strength and creep behaviour and is therefore used only in indoor applications for illuminated ceilings or walls. It has very good printing properties. 

Cotton/polyester blend woven fabric PVC foil... 

Other film dosimeters. Colorless PVC foils are used at electron accelerators to monitor the irradiation process and the accelerator parameters (like scan width and beam spot). In these materials unsaturated chemical bonds form upon irradiation and the optical absorption of these new species can be measured by spectrophotometry at 395 nm in the dose range of 0.5-60 kGy (Artandi and Stonehill 1958). It is important to mention, however, that due to various factors (environmental effects on the response, dose rate effects, batch-to-batch variation, etc.) these films should not be considered and used as dosimeters, but only as dose indicators. 

Tin can be also determined in PVC by polarography and atomic absorption spectrometry and in PVC foils by x-ray fluorescence analysis. ... 

The isolation and determination of organotin compounds in vinegar and salad oil after contact with stabilised hard PVC foil has also been studied by Wieczorek [41]. Foil samples were extracted under reflux, with pentane or ethyl ether other samples were left in contact with oil or vinegar for periods up to 11 months. The organotin compounds in the solvent extracts or in the oil (diluted with pentane) or a chloroform extract of the vinegar were then adsorbed on to a column of Florisil (which was then washed with hexane and ether, if necessary, to remove the oil), eluted with chloroform... 

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