Chapter Introduction Chapter Introduction 1 1 Plastic Industry

Chapter Ⅰ Introduction

Chapter Ⅰ Introduction 1. 1 Plastic Industry and Plastic Products 1. 2 Conception and Characteristics of Plastic Mold 1. 3 Plastic Molding Process and Mold 1. 4 Development Trends of Plastic Molding and Mold

Properties of Plastics 1. Low relative density , which is 0. 9～ 2. 3，high specific strength 2. Good corrosion resistance 3. Excellent electrical insulation properties, widely application in electronics industry 4. Anti-friction, good wear resistance, low friction factor. 5. Can reduce noise and damp vibration

Application of Plastic Products

1. 1 Plastic Industry and Plastic Products General-purpose plastics Plastics is belonging to high molecular material Engineering plastics Special plastics Plastics industry, including plastic production and plastic products (plastic parts) production

1. 1 Plastic Industry and Plastic Products Production of monomer Additives Raw material Production of resin Production of Resin Production Of Plastics Production of Plastics Molding Plastic Products Production of Plastic Parts

1. 2 Conception and Characteristics of Plastic Mold：A tool which uses its specific shape to mold the products with exact shape and size. Characteristics: 1）Mold is a kind of tool 2）The plastic parts are “exactly the same as” mold 3）single-piece production 4） The mold parts with high accuracy, high complexity, high consistency, high productivity and low consumption, other manufacturing methods can not match

Factors Influence the Plastic Production Material: Plastics Basis：Plastic molding performance，Plastic structure, the dimensional accuracy Equipment：Plastic molding equipment Processing equipment：Plastic mold Material, Plastic molding process, efficient equipment and advanced molds are the main factors influencing the production of plastic parts.

1. 3 Plastic Molding Process and Mold Classification： • By structure • Linear molding method • Plate molding method • Three dimensional molding method（Plastic molding） • By physical state • Fusion molding • Solid molding

Classification by The Structure of Products Linear molding method: Artificial fibers Plate molding method: Sheet material or flaky material (thin film , plastic film) Stereo shape molding method: （Plastic molding） Tool Plastics Molds Plastic molded into the products with a geometric shape, dimensional accuracy and physical properties meeting the requirements.

Methods of Plastic Molding Compression Molding Transfer Molding Injection Mold Extrusion Mold Pressure roller (Molding) Vacuum molding Plastic Molding Methods and Molds Blow Molding In-Mold Labeling Foam Mold Roto Mold Hot-pressing Mold

Classification by Physical State In Molding Fusion Molding : A method of molding which heats the plastics to the fusion state to molding. Compression Molding Solid Molding : Blow Molding Transfer Molding Injection Molding Extrusion Molding Roto Molding A method of molding which operate when plastics is in the soften state, a state with low temperature in comparison with fusion state. Vacuum Molding and Compression Molding

Compression Molding Equipment Fusion Molding Compression Molding Products

Compression Molding Products

SMC Compression Molding Products SMC

Transfer Molding Equipment Fusion Molding Principle of Transfer Molding Products

Injection Molding Equipment Fusion Molding Principles of Injection Molding Products

Injection Molding Products

Injection Molding 实 例Products

实 例Products Injection Molding Car bumper

Injection Molding Equipment Hopper Sprue Heater Clamping Mechanism Hydraulic Mechanism Mold Cooling System Feeding Cavity Screw Injection Molding Process

Extrusion Molding Extruder Crosshead Fusion Molding 挤出成型产品 Process of Extrusion Molding

Extrusion Molding Products

Extrusion Molding Pipe Shaping Head device mold Extruder Cooling tank Traction Cutting device Plastic pipe Extrusion Molding is a molding method, depending on the squeezing action with the help of screw or plunger, which drives the fusion polymeric material going through flaring dies to become the continuous profile with constant section.

Extrusion Molding Sheet The polymeric material , already plasticized to sticky flow temperature, is made to go through the clearance of a series of level of rollers in opposite direction, undertakes the extrusion and extend , then becomes sheet-shape product with specific thickness, width and clean surface. The sheet-shape product is mainly used to produce sheet, film, artificial leather and so on.

Extrusion Molding Film

Roto molding A heated hollow mold is filled with a charge or shot weight of material, it is then slowly rotated (usually around two perpendicular axes) causing the softened material to disperse and stick to the walls of the mold. In order to maintain even thickness throughout the part, the mold continues to rotate at all times during the heating phase and to avoid sagging or deformation also during the cooling phase.

Roto molding Plastic powder heating cooling Heating and roto Open mold

Roto molding Applications: Tool case, Car roof, Playground Toys, etc. . Tool case Car roof

Blow Molding Solid Molding Press Machine for Blow Molding Principles of Blow Molding Products

Hollow Molding Products

Blow Molding PF 3 Blow Molding Oil tank

New Process Capability--- 3 D Blow Molding Conventional BM - Pinched parts 3 D blow molding l Wall thickness control (radial + axial control) l Suction blow molding l Parison manipulation l Se. Co techniques

Vacuum Molding Mold Solid Molding Vacuum Molding Products Male Mold Vacuum Molding Female Mold Vacuum Molding Car top box

1. 4 Development Trends of Plastic Molding and Mold 1. Deveolopment of plastic molding technology Theoretical Progress Method Innovation Plastic molds with the properties of high precision, large, complex, long-life Develop high-quality mold materials and advanced surface treatment technology Popularize the CAD/CAE/CAM technology 2. Trendency of Mold processing technology 3. Cultivate Professionals for mold Develop polishing technology, equipment and material for mold. High speed measurement technology, reverse engineering and concurrent engineering Standardize the mold

The Progress of Plastic Molding Theory Stimulation software for mold processing include UG, CATIYA, PRO/E etc. Temperature Analysis of Mold Cooling System Design Temperature Analysis Gas assisted Technology Gas Penetration Analysis of Runner Optimized Design

Advanced Plastic Molding Technology and Molds Injection Molding Without Runners Thermosetting Plastic Injection Molding Gas Assisted Injection Molding Low Foam injection Molding , Exhaust Injection Molding , Flow Injection Molding, Power fusion Injection Molding , Water Assisted Molding , Coinjection Molding , Cast Molding , Rotational Molding, Double-color Dualmode Injection Molding etc.