In the mold, use general purpose nozzles (not tapered nozzles) and large, free-flow gates.

In the mold, use general purpose nozzles (not tapered nozzles) and large, free-flow gates.

End of Fill Part Length Dynamic Pressure Hydrostatic Pressure P ss Gate End Part FIGURE 61 - Deflection Equations H F WLMax Deflection: 0.002" (0.05mm) 1 = W • H3 12 _______ bending = F • L3 48 • E • I _______ k Vcoolant nmax, coolant • Pcoolant • Cp, coolant Dmin = k Vcoolant nmax, coolant • Pcoolant • Cp, coolant Dmin = k Vcoolant nmax, coolant • Pcoolant • Cp, coolant Dmin = FIGURE 60 - Pressure vs Part Length FIGURE 61 - Deflection equations FIGURE 62 - For Plate Shaped Parts FIGURE 63 - For Cylindrical Shaped Parts Design Guide 49 • MMoldings = Combined mass of molded parts • Cp = Specific Heat of the material Step 3 – Heat Removal Rate • Nlines = The total number of independent cooling lines there are in the mold • tc = The cooling time required by the part (Determined in step 1) Step 4 – Coolant Volumetric Flow Rate • ΔTMax,Coolant = Change in coolant Temperature During Molding (1°C) • ρCoolant = Density of coolant • CP = Specific heat of coolant Step 5 – Determine Cooling Line Diameter • ρCoolant = Density of coolant • VCoolant = Volumetric flow rate of coolant • μCoolant = Viscosity of coolant • ΔPline = Max pressure drop per line (Usually equals half of the pump capacity) • LLine = Length of the cooling lines COOLING LINE SPACING k Vcoolant nmax, coolant • Pcoolant • Cp, coolant Dmin = k Vcoolant nmax, coolant • Pcoolant • Cp, coolant Dmin = k Vcoolant nmax, coolant • Pcoolant • Cp, coolant Dmin = k Vcoolant nmax, coolant • Pcoolant • Cp, coolant Dmin = k Vcoolant nmax, coolant • Pcoolant • Cp, coolant Dmin = k Vcoolant nmax, coolant • Pcoolant • Cp, coolant Dmin = 2D < H < 5D H < W < 2H FIGURE 70 - Cooling Line Spacing FIGURE 64 - Heat Transfer Equation FIGURE 65 - Total Cooling for Mold FIGURE 66 - Cooling Required by Each Line FIGURE 68 - Max Diameter Equation FIGURE 69 - Min Diameter Equation FIGURE 67 - Volumetric Flow Rate Equation 50 Gravi-Tech ADHESIVE ADVANTAGES DISADVANTAGES Cyanoacrylate Rapid, one-part process Various viscosities Can be paired with primers for polyolefins Poor strength Low stress crack resistance Low chemical resistance Epoxy High strength Compatible with various substrates Tough Requires mixing Long cure time Limited pot life Exothermic Hot Melt Solvent-free High adhesion Different chemistries for different substrates High temp dispensing Poor high temp performance Poor metal adhesion Light Curing Acrylic Quick curing One component Good environmental resistance Oxygen sensitive Light source required Limited curing configurations Polyurethane High cohesive strength Impact and abrasion resistance Poor high heat performance Requires mixing Silicone Room temp curing Good adhesion Flexible Performs well in high temps Low cohesive strength Limited curing depth Solvent sensitive No-Mix Acrylic Good peel strength Fast cure Adhesion to variety of substrates Strong odor Exothermic Limited cure depth Design Guide 51 Bibliography 1.

Find Inspiration in New PolyOne Online Films Design Center CLEVELAND – PolyOne has unveiled an all-new online Decorative Films Design Center, providing visual inspiration for those who want to add inter

Featuring a fresh look at color and additive dispersions for silicone as well as the latest cosmetics ingredients and global color trends, it provides formulators with valuable online color resources. To access PolyOne’s news library online, please go to www.polyone.com/news.

Bu, online iletişimi ve sosyal medyayı kapsamaktadır.

Ide értendők az online és közösségi médiákban leadott közlemények is.

Isso inclui comunicados online e em mídia social.

Dit omvat online communicatie en sociale media.

With a new user-centric online platform and modern, premium visual identity, the Dyneema® brand is better placed than ever to showcase its strengths, generate and capture market demand, and meet the needs and expectations of today’s buyers.   In particular, the new online platform provides an up-to-date hub for content and acts as a central touchpoint for engagement and communication with the wider value chain. To access Avient’s news library online, please visit www.avient.com/news.