Conference Proceedings

Plastics Are Shaping Tomorrow Today

April 18-21,1988 Society of Engineers

IMG, MO DIFIERS&ADDmV ES, THERMOPLA STICS, FAILURE ANALYSIS, COM PUTERSINPLAS TICS, MATERIALS & FOAMS, ENER GETIC PROCESS ING, COLOR & APPEAR ANCE, ENERGE TIC, DISPOSING & RECYCLING OF ALLOYS & BLE NDS, PLASTICS IN ELECTRONICS &PHOTOTRONICS

46th ANNUAL iCHNICAL CONFERENCE & EXHIBITS Contents COLOR AND APPEARANCE DIVISION Synthetic Complex Metal Oxide Pigments for Plastics 2 J. Hackman, The Shepherd Color Co. Colored Luminescence—The Next Frontier 7 T. Mahany II, Eldon Enterprises Ltd. Liquid Color in PET Packaging 10 D. Peacock, PDI The Effects of Metal Ions on Daylight Fluorescent Pigments in Plastic Systems 12 J. Cook, Day-Glo Color Corp. Colorants for Polymers Regulation as Indirect Food Additives 16 G. McCowin, Food and Drug Administration Refractive Index—A Key to Understanding Color Differences 18 B. Donald, Dow Chemical Co. R. Mathew, Americhem, Inc. The Effect of Concentrate Viscosity Characteristics on Color Development in LLDPE Film 22 R Patet, Colortech Inc. W. Baker, Queen's University Concentrates of Minerals, Additives, and Pigments Using Low MW Carriers 24 L. Bourland, ARCO Chemical Co. Color Stability of Pigmented 28 D. Holtzen, £ /. du Pont de Nemours & Co., Inc.

EXTRUSION DIVISION Extrusion Characteristics of Polypropylene Resins 34 C. Cheng, Exxon Chemical Co. Analysis of Slump in Plastic Pipe Extrusion 38 A. Giacomin, Texas A&M University S. Doshi, McGill University Product Liability—Who Pays for It? , 41 R. Gregory, Robert Gregory Associates, Inc. Evaluating Extruder Screw Performance 45 E. Steward and W. Kramer, Crompton & Knowles Corp. On-Line Additive Injection in the Extrusion Process 51 S. Houlihan, Parker Hannifin Corp. Heat Transfer in Twin Screw Extruders 54 D. Todd, Baker Perkins Inc. Mixing Performance in a Non-lntermeshing, Counter-Rotating Twin Screw Extruder: Experimental Study of Key Parameters Affecting the Nip Region 59 D. Bigio and D. Penn, University of Maryland Towards a Better Understanding of Mixing in a Co-Rotating Twin Screw Extruder 64 D. Kalyon, A. Gotsis, C. Gogos, and C. Tsenoglou, Stevens Institute of Technology Heat Transfer in Twin Screw Extruders 67 H. Larsen and A. Jones, £ /. du Pont de Nemours & Co., Inc.

ANTEC '88/vii A Comparative Study of Single and Twin Screw Devolatilizers 71 V. Notorgiacomo and J. Biesenberger, Stevens Institute of Technology Optimisation of Compounding Machines 76 J. Colbert, Baker Perkins Chemical Machinery . •> Scaleup of Counter-Rotating Non-lntermeshing Twin Screw Extruders 80 R. Nichols, Welding Engineers, Inc. J. Lindt, University of Pittsburgh A Numerical Procedure for Evaluation of Mixing in the Nip Region of a Non-lntermeshing, Counter-Rotating Twin Screw Extruder 85 D. Bigio and S. Zerafati, University of Maryland Simulation of Flow of Polymer Melts in Intermeshing Co-Rotating Twin Screw Extruders 89 W. Szydlowski and J. White, The University of Akron Finite Element Modeling of a Counter-Rotating, Tangential (CRT) Twin Screw Extruder 93 K. Nguyen and J. Lindt, University of Pittsburgh Current Developments in Twin Screw Design and Its Application in the Preparation of Polymer Blends 96 K. Kapfer, Werner & Pfleiderer GmbH Feed Mechanism and Screw Design for Grooved Feed Extruders 102 W. Krueger, 3M Co. The Compressibility of the Resin Solid Feed Bed in Extrusion 105 S. Derezinski, Eastman Kodak Co. Extrusion of Pipe Compounds with Double Flight Screws 109 Y. Gau, Union Carbide Corp. An Enhanced Plasticating System Using a Combination of a High-Speed Extruder and Gear Pump 114 G. Menges and H. Langhorst, Institute for Plastics Processing Extruder Screw Analysis 120 R. Kline, Hoechst Celanese Corp. Temperature Development in Pure Drag Flow, Exact Analytical Solution 125 C. Rauwendaal, Raychem Corp. ' J. Ingen Housz, Twente University Dependence of Melt Temperature on Screw Speed and Size in Extrusion 132 Y. Guo and C. Chung, Rensselaer Polytechnic Institute Polycad: A Finite Element Program for Polymer Flow Analysis Through Extrusion Dies 137 J. Vlachopoulos, P. Behncke, and J. Vlcek, McMaster University A Heuristic Approach to Modeling Viscoelasticity in Polymer Processing 140 E. Mitsoulis, University of Ottawa Analysis of Fluted Mixing Devices for Single Screw Extruders 145 D. Sebastian, A. Kiani, and R. Rakos, Stevens Institute of Technology Blown Stretch Film Processing Parameters 149 D. Smith, Battenfeld Gloucester Engineering Co. Equipment and Processing Update for the Blown Film Extrusion of Linear Low Density Polyethylene 151 W. Bode, Battenfeld Gloucester Engineering Co. Review of Developments in Blown Film Machinery Over the Last Decade 158 D. Lounsbury, SANO Inc. Practical Considerations in Barrier Film Coextrusion 162 H. Brax, BC Enterprises, Inc. On-Line Layer Discrimination of Multi-Layer Structures 1£5 S. Shapiro, Aeonic Systems Experimental/Theoretical Studies on a Special Sheet Die 168 J. Charrier and R. Ciplijauskas, McGill University A. Catani and C. de Grandpre, IGM/CNRC J. Agassant and B. Vergnes, CEMEF/Ecole des Mines The Analysis of Non-Isothermal Multi-Layer Coextrusion Flows—A New Approach 172 Y. Shu, S. Chen, and J. Cheng, University of Lowell Automatic Blown Film Dies for High Quality Film 175 W. Feistkorn, Windmoller & Holscher Predicting Flow Performance of Spiral Mandrel Dies 179 J. Perdikoulias, J. Vlcek, and J. Vlachopoulos, McMaster University

Viii /ANTEC '88 Correlation Between Orientation and Tear Strengths on Blown Linear Low-Density Polyethylene (LLDPE) Films 183 C. Lee, I. Peat, L. Wild, and R Fernando, USI Chemicals Co. Double Bubble Tubular Film Extrusion Process to Produce Biaxially Oriented Polyethylene terephthalate) Films 187 H. Kang, M. Cakmak, and J. White, University of Akron M. Pollack, Eastman Kodak Co. Utilization of Pressure Transducers for Improved Control of the Extrusion Process 193 R. Infante, Dynisco, Inc. New Melt Pressure Transducer Enhancements 197 W. Wareham and T. Healy, Dynisco, Inc. Maximizing Extruder Throughput and Product Quality Between Screw-Installation and Rebuilding 201 K. O'Brien, Hoechst Celanese Corp. The Processing Functions of Polish and Draw Roll Stands in Plastic Sheet Production 205 W. Virginski, Davis-Standard Division INJECTION MOLDING DIVISION Experimental Determination and Analysis of the Flow Pattern During the Filling of a Complex Mold and Its Dependence on Gate Characteristics 212 A. Garcia-Rejon, G. Salloum, R Girard, and G. Lague, National Research Council of Canada Effects of Deviations from Ideal Runner Balance in Multi-Cavity Co-Injection Molding 216 M. Amon and T. Tung, American National Can Co. Optimization of Gate Location and Operational Molding Conditions for Injection Molding 219 I. Pandelidis, Q. Zou, and I Lingard, University of Maryland Injection Molding—A Systems Approach 223 M. Urquhart, Husky Injection Molding Systems The Hydro-Flex Gate for Injection Molding 226 J. Von Holdt, Plas-Tool Co. Hot Runner Molding Thermodynamic Behaviour of the Gate Area 229 H. Rozema, Mold-Masters Ltd. Determination of Approximate Feasible Molding Space for Injection Molding 233 I. Pandelidis and Q. Zou, University of Maryland A Schematic Overall View of Packing Process in Injection Molding 237 T. Shibayama, Nagoya Municipal Comparisons Between Injection Mold-Filling Simulation and Experiments 240 V. Wang, Advanced CAE Technology, Inc. C. Hieber and K. Wang, Cornell University J. Werlin and K. Malburn, Eastman Kodak Co. A Bi-Dimensional Model for Mold Filling Simulation: Fill 2 245 S. Philipon, J. Villemaire, M. Vincent, and J. Agassant, Cenfre de Mise en Forme des Materiaux M. de la Lande, G. Degeneve, and A. Latrobe, CISI Ingenierie A Study of Finite Element Mold Filling Analysis in Application 250 S. Chen, R Pai, and C. Hsu, Application Engineering Corp. Quick Mold Change for Injection Molding Machines 255 R Glorio, Incoe Corp. An Introduction to the Molding of Optical Disc Substrates 259 M. Dunn, Klockner Ferromatik Desma Process Engineering Design of RAM Screws for Injection Molding Machines with Regard to an Improved Melt Quality and Higher Plasticizing Capacity 263 G. Langecker, Battenfeld Entwicklungsgesellschaft MBH New Mixing Screw Concepts for Injection Molding 267 R. Nunn, University of Lowell S. Takashima, HPM Corp. Melt Homogeneity in Injection Molding: Application of a Ring-Bar Device 271 G. Peischl and I. Bruker, General Electric Corporate Research and Development Mechanism for Injection Molding of Difficult High-Aspect-Ratio Configurations 276 G. Galic and S. Maus, Galic/Maus Ventures Melt Viscosity Measurements Using an Instrumented Injection Molding Nozzle 279 R. Malloy, S. Chen, and S. Orroth, University of Lowell

ANTEC '88/ix A New Method to Predict the Structural Stability of Injection Molded Parts. A Combination of Flow Simulation and Finite Element Stress Analysis Techniques 285 G. Salloum, A. Garcia-Rejon, R. Connolly, and G. Lague, National Research Council Canada „ Post-Filling Simulation of Injection Molding and Its Applications 290 V. Wang, Advanced CAE Technology, Inc C. Hieber, Cornell University A Statistical Study on the Effects of Velocity and Cavity Pressure on Retained Orientation 294 C. Davis, J. Hudson, and B. Stechulte, GMI Engineering & Management Institute Adaptive Process Control for Injection Molding 298 R. Nunn, University of Lowell C. Grolman, Johnson Wax Transfer Point Control Comparison Between Mold Parting Line and-the Standard Strategies 305 J. Wenskus, Eastman Kodak Co. New Software Developments for Part Design and Process Simulation in 310 R Filz and G. Menges, Institute for Plastics Processing Injection Molding Diagnostics Based on Priority First Minimum Cover 313 I. Pandelidis and Z. Lin, University of Maryland Computer Mold Cooling Simulation of Injection Molded Plastic Parts 316 R. Schoen and D. McDonald, G£ Plastics Applications Center Three Dimensional Temperature Distribution of Polymer Melts During Injection 320 O. Amano and S. Utsugi, Nippon Petrochemicals Co., Ltd. Minimizing Residual Stresses in Molded Parts 324 M. Liou, The Ohio State University N. Suh, Massachusetts Institute of Technology Direct Observation of Jetting Phenomena under a High Injection Pressure by Using a Prismatic-Glass Inserted Mold 329 H. Yokoi and T. Hayashi, University of Tokyo N. Morikita and K. Toda, Sumitomo Heavy Industries, Ltd. Injection Molding Compact Discs: Relationship Between Process Conditions, Birefringence and Block Error Rate 334 L. Schmidt and J. Maxam, General Electric Co. Degradation of Polypropylene During the Injection Moulding Process 339 H. Ries and G. Menges, Institut fur Kunststoffverarbeitung ELECTRICAL AND ELECTRONIC DIVISION Conductive Polymeric Materials for Robotic Tactile Sensors 346 R Hammond and J. Gooch, Georgia Tech Research Institute Switching Behavior of Solvent-Cast Metal-Filled Composites 349 K. Murali and R. Roberts, University of Akron Thermally Processible and Environmentally Stable Conducting Polymers 353 C. Chiklis, Polaroid Corp. R lannazzi and N. Schott, University of Lowell Nickel Coated Graphite Fibers for Electrostatic Discharge Protection of Plastics 357 M. Murthy, American Cyanamid Co. Effect of Regrind on the Electrical and Physical Properties of a Thermoplastic Resin with NCG Fibers 362 M. Murthy, American Cyanamid Co. Testing of Electrostatically Dissipative Polycarbonate-Based Materials 367 T. Rothwell and B. Chow, Materials Engineering Laboratory Copper Coated Glass-Fiber Composites for EMI Shielding Applications 369 J. Montanye and G. Halldin, 7exas A&M University Polymeric Coatings for Optical Fibers 372 J. Toler and G. Kar, Corning Glass Works Ultraviolet Light (UV) Curable Coatings for Optical Fibers 377 G. Pasternack, DeSoto, Inc. The Effects of Cure Temperature on the Thermomechanical Properties of UV Curable Coatings 378 B. Overton, C. Taylor, and A. Muller, AT&T Bell Laboratories How Coating/Polymer Properties Affect Fiber/Cable Performance 382 B. Skutnik, Ensign-Bickford Optics Co.

X/ANTEC '88 Thermo-Oxidative Aging of a Primary Lightguide Coating in Films and Dual-Coated Fibers 386 D. Simoff, M. Chan, J. Chapin, and B, Overton, AT&T Bell Laboratories The Processing and Use of Organosilicon Polymers for Photonic Applications .390 B. Bagley and W. Quinn, Bell Communications Research "• • C. Kurkjian, AT&T Bell Laboratories Time Temperature Dependence of Dual Coated Lightguide Pullout Measurements 392 B. Overton and C. Taylor, AT&T Bell Laboratories Optical Fibre Coatings: High Modulus Coatings for Fibres with a Low Microbending Sensitivity 395 R Bouten, D. Broer, C. Jochem, and T. Meeuwsen, Philips Research Laboratories Calculated Stresses in Dual Coated Optical Fibers .... 398 E. Suhir, AT&T Bell Laboratories •• A Fire Resistant Optical Cable with Special Plastic Jacketed Fiber 405 H. Suzuki, T. Tsujita, N. Shamoto, and K. Inada,- Fujikura Ltd. The Effect of Temperature Dependent Materials Properties on Fiber Optic Cable Design 409 S. Cooper, K. Coupe, and B. Zimmermann, Siecor Corp. Selection and Test Criteria for Polymeric Materials for Tactical Fiber-Optic Cables .415 K. Kathiresan, B. Overton, M. Santana, J. Shea, and C. Taylor, AT&T Bell Laboratories Plastic Molded Single and Ribbon Type Optical Fiber Connector 420 K. Inada and H. Yokosuka, Fujikura Ltd. Gradient-Index Polymer Materials and Their Optical Devices 424 Y Koike and Y Ohtsuka, Keio University Materials for Nonlinear Optics—Orientationally Ordered Polymer Films 429 J. Sohn, K. Singer, M. Kuzyk, and W. Holland, AT&T Engineering Research Center H, Katz, C. Dirk, and M. Schilling, AT&T Bell Laboratories Polymers for Optoelectronics ... 431 T. Kaino and Y. Katayama, NTT Opto-Electronics Laboratories Optical Fiber Chemical Sensors Utilizing Dye-Doped Silicone Polymer Claddings 435 L. Blyler, Jr., R. Lieberman, L. Cohen, J. Ferrara, and J. MacChesney, AT&T Bell Laboratories Coated Metals Compatible with PVC Jackets for Bonded Sheath Cable Applications 439 K. Bow, D. Pikula, B. Grosser, and P. Leng, Dow Chemical U.S.A. Insulation Displacement Connections for High Current Wiring 443 W. Pegram, iMAX, Inc. Development of Nonmetallic Flat-Plate Antenna 446 G. Gupta and H. Yee, 7exas Instruments Inc. Dimensional Tolerance Requirements of Plastic Fiber Optic Connectors 450 D. Thompson, AMP Inc. A Semi-Empirical Algorithm for Flow Balancing in Multicavity .454 L. Manzione, J. Osiniski, G. Poelzing, D. Crouthamel, and W. Thierfelder, AT&T Bell Laboratories Moisture Diffusion in Electronic Packages. II. Molded Configurations vs. Face Coatings 459 L. Nguyen, I.B.M. T. J. Watson Research Center Transport Properties of Epoxy Encapsulants 462 J. Liutkus, L. Nguyen, and S. Buchwalter, I.B.M. T. J. Watson Research Center Photooxidation of Conformal Coatings 465 S. Sawan, K. Muni, and S. Kitchloo, University of Lowell P. Schuessler, IBM Corp.

THERMOFORMING DIVISION Vibro-Punching of Plastic Composites and Thermoplastic Sheets with Poor Punchability .470 H. Yokoi and T. Nakagawa, University of Tokyo Vibro- of Thermoplastic Sheets by Repeated Deformation Process 476 H. Yokoi, University of Tokyo H. Arakawa, Nachi-Fujikoshi Corp. N. Kobayashi, Shin-Etsu Polymer Co., Ltd. Thermoforming Pen Barrels v 480 M. Tseng, The Gillette Co. Closed Loop Control for Surface Temperature Distribution—Innovative Developments in the Field of Infrared Heating of Plastic Films . 486, K. Rudolph and G. Menges, Institut fur Kunststofherarbeitung

ANTEC '88/xi The Effect of Molecular Weight and Molecular Weight Distribution on Extrusion and Thermoforming Properties of Polypropylene 491 D. Hylton and C. Cheng, Exxon Chemical Co. Melt Processing and Thermoforming of High Nitrile Resins *. 496 R Lund, BP Chemicals International

ENGINEERING PROPERTIES AND STRUCTURE DIVISION Blends of Novolac Resin for Adhesive Applications 502 R Hadjiandreou, A. Kioul, N. Mekhilef, and T. Chougui, Algerian Petroleum Institute (I.A.P.) Structure-Property-Processing Relationships of Polyurethane- Interpenetrating Polymer Networks 507 K. Wang, T. Hsu-, and L. Lee, The Ohio State University Modification of Engineering Thermoplastics with Functionalized Styrenic Block Copolymers 513 R. Gelles and M. Modic, Shell Development Co. J. Kirkpatrick, Shell Chemical Co. Mechanical, Dynamic Mechanical Properties, and Morphology of Modified Polyphenylene Oxide Blends 516 C. Ma and C. Hsiao, National Tsing Hua University H. Hsu, China Technical Consultants, Inc Prediction of Melt Flow Rate and Spiral Flow of Glass Fiber Filled Polycarbonate 521 B. Whipple, Mobay Corp. Experimental Rheology of Glass Fiber/Polyester Sheet Molding Compound 524 S. Davis and C. Tucker III, University of Illinois Effects of Glass Fiber Diameter on the Mechanical Properties of Crystalline and Amorphous Thermoplastic Composites 528 J. Watkins, R Gaa, and R. Swisher, PPG Industries The Effect of Processing Variables on the Structural Integrity of Filled 534 R. Quigley and S. Petrie, University of Lowell Carbon Fiber Reinforced Polycarbonate Characterization for Aerospace Applications of Injection Molding 538 R. Sherman, McDonnell Douglas Astronautics Co. The Influence of Shear Deformation on the Structural Behavior of Composites in Finite Element Modelling ,., 544 R. Connolly, T. Vu-Khanh, and G. Salloum, National Research Council Canada Predictions of the Doi Theory for Liquid Crystalline Polymers 547 K. Blizard and D. Baird, Virginia Polytechnic Institute Structure Development in Thermotropic Liquid Crystalline Polymers: Effect of Various Types of Extensional Flow 551 K. Blizard, D. Done, and D. Baird, Virginia Polytechnic Institute Powder Characterization and Compaction of Polyether-etherketone (PEEK) 555 J. Reilly, Naval Air Development Center I. Kamel, Drexel University HDPE Abrasion to UHMWPE Abrasion by Crosslinking During Injection Molding 559 M. Callahan and A. Crugnola, University of Lowell A New Model for the High Modulus and Strength Performance of Ultradrawn 563 A. Zachariades, IBM Almaden Research Center T. Kanamoto, Science University of Tokyo Lateral Strain Effects During the Large Extension of Thermoplastics 565 V. Stokes and H. Nied, General Electric Co. Creep in Glassy Polymers and Composites: A Constitutive Equation 569 S. Kumar and C. Armeniades, Rice University N. Dharmarajan, University of Houston Shear and Tensile Impact Strength of Thermoplastics 573 M. Kimura and K. Koide, Idemitsu Petrochemical Co., Ltd. Crack Propagation Studies in Multi-Layer Test Pieces of Reinforced and Unreinforced Thermoplastic Materials 577 S. Doshi, J. Charrier, and J. Dealy, McGill University Effects of Thickness and Quenching on the Fracture Toughness of Polycarbonate 582 R Mallick and J. Jennings, The University of Michigan-Dearborn

X&/ANTEC '88 The Effect of Self-Reinforcement on the Tribological Behaviour of Thermoplastics 587 J. Song, C. Maertin, and G. Ehrenstein, University of Kassel Effect of Comonomer Additions on the Properties of Linear Low-Density Polyethylene (LLDPE) Resins 591 C. Lee, I. Peat, L. Wild, and R Fernando, USI Chemicals Co. Chain Extended Low Density Polyethylene Tubular Films for the Heat Shrinkable Packaging Applications 595 J. Cizravi, Z. Fekkai, and M. Bakar, Algerian Petroleum Institute (LAP) Property-Orientation Correlation for Biaxially Stretched Polystyrene Film 600 K. Choi, Fleetguard, Inc. J. Spruiell, University of Tenn. J. White, University of Akron Microstructure Development in Injection Molded Engineering Plastics: Poly(ether imide) and Poly(2,6-dimethyl-1,4 phenylene ether) 605 D. Kalyon, A. Wagner, and S. Dey, Stevens Institute of Technology Measurement of Thermal Conductivity of Polymer Melts by the Line Source Method 609 H. Lobo and C. Cohen, Cornell University

VINYL PLASTICS DIVISION Computerized PVC Formulating for Optimized Cost/Performance 614 C. Brofman, J. Caillault, and L. Krauskopf, Exxon Chemical Co. Alumina Trihydrate in Flexible PVC—Effects of Alumina Particle Morphology 619 D. Green and A. Dallavia, Jr., Solem Industries, Inc. Application of the UNIFAC-FV Group Contribution Method to the Prediction of Relative Compatibility of with PVC 624 H. Boo and M. Shaw, The University of, Connecticut Fillers for Vinyl Plastisols .628 J. Pereira and R. Deanin, University of Lowell Multiphase PVC/Styrenic Copolymer Alloys: Internally Reinforced by Partial Miscibility 631 L. Bourland, ARCO Chemical Co. Improved CPVC Compounds: Miscible Alloying with Styrenic Copolymers 638 L. Bourland, ARCO Chemical Co. Glutarimide Acrylic Copolymer: A New Route to High Heat PVC 643 J. Patterson and C. Gruber, Rohm and Haas Co. Evaluation of PVC Formulations Meeting the Various Cell Classifications in ASTM D-3034 648 A. Kupfer, J. M. Huber Corp. Delayed Fusion in PVC Compounds from High Melting Point, LMWPP Lubricants .652 L. Bourland, ARCO Chemical Co. Reinforcement Using Heat-Treated Colloidal Silica 657 J. Cizravi and A. Mahtali, Algerian Petroleum Institute (LAP) Mathematical Model of Strain-Induced Crystallization of Vinylidene Chloride/ (VDC/VC) Copolymers .661 M. Read and M. Lund, The Dow Chemical Co. Shrinkage in Rigid PVC Profile Extrusions 664 E. Rabinovitch and J. Quisenberry, BFGoodrich Geon® Vinyl Division Injection Molding CPVC Industrial Materials .668 R. Neuman, BFGoodrich Specialty Polymers & Chemicals Div. Effect of Injection Molding Conditions on Creep Rupture and Flex Fatigue of Rigid PVC .671 T. Forsyth, R. Butler, and J. Summers, BFGoodrich Sintering of PVC 675 C. Crolla and G. Menges, Institut fur Kunststoffverarbeitung THERMOSET DIVISION Flow-Cure Characteristics of Novolac Resins Cross-Linked by Formurea 680 R Hadjiandreou and A. Gouasmi, Algerian Petroleum Institute (I.A.P) Mechanical and Electrical Properties of Novolac Resins Cured by Formurea 684 A. Gouasmi, N. Guefroudj, and R Hadjiandreou, Algerian Petroleum Institute (I.A.P.)

ANTEC '88/xUi A Numerical Simulation to Predict Fiber Orientation in Thin Compression Moldings 687 S. Advani, University of Delaware C. Tucker III, University of Illinois at Urbana-Champaign . •. , Cold Runner Technology for Crosslinking Materials. .7 ,. .692 P Barth and G. Menges, Institut fur Kunststoffverarbeitung , A New Process Control for the Injection Moulding of free Flowing Thermosets 695> G. fischbach and G. Menges, Institut fur kunststoffverarbeitung •<...,• ..,'-"- Studies of Phenol-formaldehyde/Polyurethane Hybrid Foam for Sound Absorption Material ...... »*.*. ..-.•••>.•• • • • •• • • •? • •• •• •...... • • • • .699 S. Tong, S. Tsai, J. Chen, and R Wu, Industrial technology Research Institute :

THERMOPLASTIC MATERIALS AND FOAMS DIVISION Gas Chromatographic Determination of Residual Blowing Agents in Polystyrene Foams ...... 704 C. Krutchen and W. Wu, Mobil Chemical Co. .•••••••• Corrected Volatiles Test for Determination of Residual Blowing Agents in Polystyrene Foams 707 C. Krutchen and W. Wu, Mobil Chemical Co. Blowing Agent Emissions from Polystyrene Foam Plants. 711 C. Krutchen and W. Wu, Mobil Chemical Co. Structure of Microcellular Thermoplastic Foam .715 V. .Kumar and N. Suh, Massachusetts Institute of Technology The Production of Microcellular Foams in Semi-Crystalline Thermoplastics . . .719 J. Colton, Georgia Institute of Technology Failure Data for Modified Polyphenylene Oxide Structural Foam. ... .723 V. Stokes, R. Nimmer, and D. Ysseldyke, General Electric Co. The Properties of High Performance Expandable Beads Based on Blends of Polystyrene and Polyphenylene Ether 727 L. Martynowicz Hans and R. Allen, General Electric Co. , ; Structure-Property Relationship and Its Correlation wtth Thermal Behavior of Cross-Linked Expanded EVA Formulation 733 R Hadjiandreou and F. Zitouni, Algerian Petroleum Institute (LAP.) Water Formation During Crosslinking of PE Cable Insulations with Dicumyl Peroxide; A Model System Study ,...,.... 738 J. van Drumpt, Akzo Chemie America ' ' Stress Whitening Resistant Polypropylene Impact Copolymers 741 H. Ficker and G. Goeke; Uhldh Carbide Corp. ' •.• , . D. Walker, Shell Development Co. Stiffness and Toughness Enhanced Engineering Resins .. .745 K. O'Brien and J. Crincoli, Celanese Engineering Resins, Inc. Unique Polypropylene Products from Gas-Phase Polymerization ...... 751 D. Walker, Shell Development Co. I. Burdett and H. Ficker, Union Carbide Corp. •

BLOW MOLDING DIVISION Market Development of PVC Mineral Water and Wine Bottles in Western Europe. Current Status and Projections for the Future 758 V. Sahajpal, Rohm and Haas European\ Labs . • Processing of Engineering Materials in 763 J. Higgins, General Electric Co. A System to Mold Mixed, Contaminated Plastics into Wood, Metal and Concrete Replacements 767 J. Maczko, Mid-Atlantic Plastic Systems, Inc. Computer Integrated Manufacturing 773 T. Wagner, Wagner CAD/CAM Software Engineering Blow Molding of Technical Parts Development Trends 775 R Junk, Battenfeld Fischer Three Station Stretch-Blow Molding Machines—The Machine You've Been Expecting! 785 L. Beres, Formex • '

'88