)( D.1 Assocomaplast - Centro Direzionale Milanofiori - Palazzo F/ Assago - Milan - Italy - tel fax Blow Moulding Process & Barrier Containers Part 3 Multilayer coextruded containers
)( D.2 Assocomaplast - Centro Direzionale Milanofiori - Palazzo F/ Assago - Milan - Italy - tel fax Strength and rigidity - Aluminum seal weldable - Printable and labeling - Use of R-material (middle layer) - Esthetic (gloss) - Chemical resistance - Barrier layer food/beverages: oxygen, light cosmetics: active chemicals, oxygen agro: active chemicals, oxygen Advantage of multimayer bottles
)( D.3 Assocomaplast - Centro Direzionale Milanofiori - Palazzo F/ Assago - Milan - Italy - tel fax BOTTLE WALL Water Oxygen Smell Water Fragrancies Bad smell Barrier layer function: reduce migration of gases through the bottle wall Function
)( D.4 Assocomaplast - Centro Direzionale Milanofiori - Palazzo F/ Assago - Milan - Italy - tel fax MaterialOxygen cm³ mm/m² 24h bar CO2 cm³ mm/m² 24h bar Water vapor g mm/m² 24h bar EVOH PVdC PA PET u-PVC PE-HD PP K- Coefficient of permeability for commercial plastics Coefficient of permeability
)( D.5 Assocomaplast - Centro Direzionale Milanofiori - Palazzo F/ Assago - Milan - Italy - tel fax Barrier performance
)( D.6 Assocomaplast - Centro Direzionale Milanofiori - Palazzo F/ Assago - Milan - Italy - tel fax Polymer and structure selection for barrier containers (1) Data related to: Polymer compatibility/adhesion to other polymers Barrier coefficients Aroma migration data Water absorption Chemical and swell resistance to organic solvents, oils and fats Chemical resistance to agrochemical active components ESCR at different °T are provided normally by polymer, barrier resin and adhesive manufacturers. Selection
)( D.7 Assocomaplast - Centro Direzionale Milanofiori - Palazzo F/ Assago - Milan - Italy - tel fax Polymer and structure selection for barrier containers (2) Brand owners in the food, agro, pharma and cosmetics activity have to issue own customer specifications, which has to identify the container design, weight and structure in terms of polymer selection, including the barrier resin. The blowmolder has to agree with the brand owner about feasibility, cost, timing and container performance. Selection
)( D.8 Assocomaplast - Centro Direzionale Milanofiori - Palazzo F/ Assago - Milan - Italy - tel fax layers PE-LD/PE-HD 3 layers PET/PET/PET PET/PA/PET PE-HD/R PE-HD /PE-HD PE-HD/Adhesive/PA PE-HD/Adhesive/EVOH 4 layers PE-HD/R PE-HD/Adhesive/PA or EVOH Courtesy BEKUM International Structures
)( D.9 Assocomaplast - Centro Direzionale Milanofiori - Palazzo F/ Assago - Milan - Italy - tel fax layers PE-HD/adhesive/EVOH/adhesive/PE-HD PE-HD can be replaced in some cases by PP EVOH can in some cases be replaced by PA 6 layers PE-HD/R PE-HD/adhesive/EVOH/adhesive/PE-HD PE-HD can be replaced in some cases by PP EVOH can in some cases be replaced by PA Courtesy BEKUM International Structures
)( D.10 Assocomaplast - Centro Direzionale Milanofiori - Palazzo F/ Assago - Milan - Italy - tel fax Packaging for Agro-chemical Garden Foodstuffs Cosmetics Pharmaceuticals Courtesy BEKUM International Applications of multilayer coex containers
)( D.11 Assocomaplast - Centro Direzionale Milanofiori - Palazzo F/ Assago - Milan - Italy - tel fax Bottle design - Use of Computer Aided Design