Calcium Calendering

In the calendering method, a PVC compound which contains plasticizers (qv) (60—120 phr), pigments (qv) (0—10 phr), fillers (qv) (20—60 phr), stabilizers (10—30 phr), and other additives, is kneaded with calender roUs at 150—200°C, followed by extmsion between clearance-adjusted roUs for bonding onto the substrate. This method is employed for products with thick PVC layers, ie, of 0.05—0.75 mm thickness. The main plasticizer used is di-2-ethylhexyl phthalate (DOP). For filler to reduce cost, calcium carbonate is mainly used. A woven or knit fabric made of cotton, rayon, nylon, polyester, and their blend fiber is used as substrate. For foamed vinyl-coated fabrics, the bonded materials are heated in an oven to decompose the foam-blowing... [Pg.92]

Recent developments in calcium/zinc stabiliser systems used in plasticised PVC are discussed. Here, the term plasticised PVC (PVC-P) represents calendered film, calendered flooring, spread-coated flooring and the various plastisol product areas. Emphasis is placed on the European Market as it is here that the need for new... [Pg.144]

The three samples (Ci, C2, and C3) taken from the calendering machine have been studied by coulometric titration and dehydrochlorination. Taking into account the calcium stearate and the zinc stearate and... [Pg.387]

The additives in PVC bottles for cooking oil and other food products must have FDA clearance. For flexible packaging materials, the most common stabilizers are mixed metals such as barium-zinc and calcium-zinc, which replaced the older cadmium-zinc formulations. For rigid blow molded containers and calendered sheets, or-... [Pg.166]

Chem. Descrip. Calcium carbonate coated by org. media CAS 471-34-1 EINECS/ELINCS 207-439-9 Uses Eiller in plastics (rigid PVC, window profiles, cables, calendered sheets, profiles, pipes, moldings, polyolefins, wh. masterbatches), paints (high-gloss enamels), elastomers... [Pg.529]

Chem. Descrip. Calcium carbonate coated by org. media CAS 471-34-1 EINECS/ELINCS 207-439-9 Uses Eiller in plastics (rigid PVC, cables, calendered sheets, moldings, polyolefins, wh. masterbatches), paints (gloss enamels), elastomers Features Completely compat. with organic media easily dispersed Properties Wh. rhombohedral ctyst. fineness 57% < 2 p dens. 2.7 g/ cm bulk dens. 1.1 g/cm (packed) oil absorp. 15/100 g powd. brightness 97.5% ref. index 1.59 pH 9 hardness (Mohs) 3 Microblanc TMB [Microfill K. Zafranas]... [Pg.529]

Chem. Descrip. Calcium carbonate (99.7%) coated by stearine acid CAS 471-34-1 EINECS/ELINCS 207-439-9 Uses Filler for paints (primers, undercoats), plastics (PVC rigid extrusion, PVC foam extmsion, PVC calendered sheet, PVC inj. molding), rubber, adhesives, sealing compds., and fire extinguishers Properties Spherical crystals 30% < 2 p sp.gr. 2.7 bulk dens. 1.1 g/ml (packed) surf, area 3.5 m /g oil absorp. 14/100 g dry brightness 93% pH 9 ref. index 1.58 hardness (Mohs) 3 < 0.2% moisture MT Binder ENB 02 [Bayer AG]... [Pg.548]

Chem. Descrip. Calcium stearate CAS 1592-23-0 EINECS/ELINCS 216-472-8 Uses Release agent for use in coating colors gloss aid during calendering food pkg. adhesives, coatings, paper defoamer in food-contact coatings, paper/paperboard... [Pg.593]

Calcium stearoyl lactylate, 229,233 Calea urticaefolia, 5 Calendic acid, 11 Calendula officinalis, 11,19 Californian sardine oils, 133 Calvatia gigantea, 153 Camellia sasanqua, 93 Camphor oil, 52 Canbra oil, see Rapeseed oil Candida albicans, 490 Candida species, 19,151-54,478 Candlenut oil, 52, 56,101 Cannabis sativa, 68 Canola oil, see Rapeseed oil Capelin oil, 130,132 Capillary GLC, 273 Capric acid, 1,174,179 see also Decanoic acid Caproic acid, 1,174 see also Hexanoic acid Caprylic acid, 1,174 see also Octanoic acid Carboxylic acids, polymorphism, 343 Carboxyl transferase, 485 Carcass quality of farm animals, 557 Cardiolipin, 138,156 see also Diphosphatidylglycerol Cardiovascular disease, 531,533 Carnitine, role in /S-oxidation, 494 Carotenoids, 38,154,163,397,413,446 Carthamin yellow, see Safflower Carthamus tinctorius, 84 see also Safflower Cary a species, 97... [Pg.562]

Calcium cysteine salt (0.2 wt%) was used for nucleation of flooring compound manufactured from PLA resin." Calendering is the method of choice for its manufacture." ... [Pg.101]

Other stabilizers include special zincs for plasticized applications such as cable and organics added to calcium/zinc or used for pipe extrusion and co-stabilizers for metal soap and tin, improving long-term heat stability. Kickers (liquid barium/zinc and potassium/zinc) are PVC stabilizers that catalyse the decomposition of a blowing agent to be effective at lower temperatures, and can be used for sponge leather calendering. Epoxidized compounds are effective co-stabilizers in most systems chelators with metal soap improve heat stability. [Pg.105]

Metal stearates, including predominately calcium stearate as well as zinc stearate, are the most widely used lubricants. In PVC calendering and extrusion, the stearates provide heat stabilizing effects as well as act as an internal Inbri-cant. In polyolefins, stearates act as external lubricants as well as deactivators of catalyst residues. Ferro (Synpro, Petrac), Baerlocher (Hydense), and Crompton (Witco) are the major producers of metal stearates in North America. [Pg.308]

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