Injection Molding Material Selection Guide

It has a research team including over 20 members, 40% of them have over 20 years’ industrial experience and 15% over 25 years. We make your search for an injection molding machine as simple as possible by providing you with several different ways to conduct your search. Guide_prnt_sprds. It is not always to easy to know how to choose the right tool steel for injection mold making. Special care is required when selecting the plastic material since its processing temperature must be low enough not to soften or liquefy the solder that attaches the IC to a. It includes recommendations for equipment, mold and processing, plus a quick reference trouble shooting guide. 3 Ways to Increase Energy Efficiency in Injection Molding. Injection Molding Training Classes; Part Design Review; Material Selection; Expert Witness & Testimony; Plastic Part Failure Analysis; Injection Molding Processing; Industry Websites; Injection Molding Resources; Thermoplastic Material Selection Guide; Polyethylene (LDPE & HDPE) Units of Conversion; Temperature Conversion; Basic Calculations. 새한 주식회사는 가구용 부자재 제조, 플라스틱 성형사출품, 전자접촉기 oem생산 등 사업으로 미래를 여는 기술, 최고의 경쟁력을 갖춘 제품으로 고객의 가치 향상을 위해 노력하고 있습니다. The most popular reasons for switching to plastics include: • Longer part life • Elimination of lubrication • Reduced wear on mating parts • Faster operation of equipment/line speeds. All material have inherent limitations that must be considered when designing parts. by Douglas Bryce and Travis "Doc. Most molding techniques require the use of a releasing agent. Equipped with a comprehensive array of molding and rubber-mixing equipment along with an onsite R&D lab, we can take your parts from concept to completion quickly and cost-effectively. Rubber Molding Material Selection Guide // pg. Yup origami for engineers With the knowledge of thin high performance films, combined with thermoforming expertise the results are impressive. Texas Injection Molding help guide our customers through the complex material selection process to find cost effective solutions with the right performance. Polyolefins are the most widely used plastic in this process. , Ltd on Alibaba. Molding Injection Sushi Conveyor Belt. Streamlining the selection process by eliminating classes of plastics and individual plastics based on your specifications can help you pinpoint an appropriate material. “hows and whys” of injection molding improvements with specific rules, procedures and explanations for controlling the plastic, Practical Injection Molding - Optimizing Settings This Practical Guide to Injection Moulding is based on course material used by ARBURG in training operators of injection moulding machines. Injection Molding. 6878 or email info@nwreinc. Murray Plastics is a U. This is the work to be done before mold is made, just like building a house with same as house drawings. , consumer electronics parts, zippers. The product is then ejected from the mold and the process is repeated. High density polyethylene can be easily processed by injection molding, extrusion (tubes, blow and cast films, cables, etc. It's important to first determine which mechanical properties are going to be critical to your part's function. Purging a plastic injection molding machine with resin or regrind for color changes or carbon removal often leads to costly waste and lost production time. Selection Guide Redo What will the Manufacturing Process be? Injection Molding Transfer Molding Compression Molding Extrusion, Calendaring: How I Arrived Here. Injection molding is a process in which solid thermoplastic resin pellets are melted, injected into a mold, and then cooled back to a solid state in a new form. This design guide outlines various selection criteria with helpful technical data and comparisons to alternative materials. com injection molding reference guide materials, design, process optimization, troubleshooting and. ASM Metals Handbook Vol 01 Properties and Selection Irons, Steels and High Performance Alloys. To obtain the necessary chemical and physical properties, powders are selected by size and shape and complemented with additives. Injection Molding: Material Selection Guide for Commodity and Engineered Resins Posted on: July 17, 2017 by: GreenLeaf Industries When selecting the optimal plastic material for a certain injection molding application, it is prudent to use a commodity resin. The injection molding process can be one tough task. Quadraplast™ is available in impact-modified opaque grades (AR100). 137 National Drive • Glastonbury, CT 06033 • 860. Plastic Injection Molding Machine,Horizontal Injection Ningbo HYSION mainly supplies stone injection molding machine, horizontal injection molder, stone crusher, belt conveyor, stone perform mold, and more. This list is by no means exhaustive so please feel free to contact us with questions regarding whether the material of your choosing is applicable. Plastic Injection Molding Materials : There are many varieties of materials that will be utilized in the injection molding process. b) appropriate material selection and preparation for processing to achieve the ultimate functional design goal c) maximum functionality d) minimum material usage Our intent in developing this Design Solutions Guide is to supply general information for the customer on a variety of applications as a precursor to the more narrowly focused. Clamping: The two halves of the mold must be tightly closed, before the molten plastic material is injected into the mold. The Custom-Pak blow molding design guide provides you with basic design tools for making engineered blow molded parts. Characteristics of PPS --Injection Molding manufacturing material in china. Injection molding is a manufacturing process in which a molten thermoplastic material is injected at high pressure into a mold, resulting in a desired product. The different version of the Polycarbonate resin cover a wide range of manufacturing machinery,ie: Injection Molding, Extrusion, Blow molding, etc. Material Selection Resin flow Molding Area Diagrams Antistat Nucleation Injection Molding Cylinder temperature Injection pressure Injection time Mold temperature Cure time Back pressure Screw speed Mold release Extrusion General Downstream Sheet Film Tape yarns Fiber Thermoforming / Solid Phase Forming Finishing Hot stamp printing. From basic polypropylene to engineering grade ABS and polycarbonate, our team works closely with our resin suppliers to help you determine the most effective material for your product, at the right price. Mar-Bal offers imprinting with permanent silk screening to customize the products for your selective needs. With this tool, Eck Plastic Arts is not recommending the material that would best suit your part. Application: Automotive parts, Electronic housings, Medical component, Consumer products. With the injection molding machine series, CX, GX, MX and the all-electric PX, the injection molding machinery selection from KraussMaffei covers not only standard applications, but also all process variants and special processes. The injection molding Injection molding is a method of forming a plastic product from powdered thermoplastics by feeding the material through the machine component called the hopper to a heated chamber in order to make it soft and force the material into the mold by the use of the screw. There are a few variations of two-shot molding, including rotary platen, movable. ) In the grid select the desired material by clicking on your selection. Thermoplastic Material Selection for Injection Molding Learn about material properties to quantitatively analyze parts before selecting a thermoplastic resin. Selecting the correct material for each application can be a daunting task, requiring in-depth knowledge Recommending the right type and grade of resin hinges on a thorough understanding of the product's application; all application characteristics need to be carefully weighed. Sometimes this happens right on the factory floor. Known for producing hollow parts, gas-assist techniques can overcome many of the limitations of conventional injection molding. When selecting a material for your injection molded part, do not just assume that you need a material that has the best properties. Inventor tools used in the process. provide the desired properties, appearance, and molding cycle are preferred. Download ICOMold's Plastic Injection Design Guide Check out our Library of Plastic Injection Molds article Go to our plastic injection molding and CNC machining case studies page to see how we helped customers on their projects. Material selection is a key factor for many aspects of your injection molded part or product. The all-encompassing guide to total quality process control for injection molding. Here's a quick reference guide to wall thicknesses, surface finishes, materials, and other important features for rapid injection molding. Plastic Injection Moulding Material Selection For a general guide to choosing resins for injection molding parts. November 15, 2017. The handle's. It reviews the important aspects of the factors required to develop a robust injection molding process, using the techniques of scientific molding and scientific processing. Yes, it adds another element to part production by involving a second material and process, but it’s not really all that complicated. Material Selection with an Eye on Micromolding. Whether you're looking for a purging compound to quickly transition from one color to another or eliminate contamination that causes rejects, ASACLEAN has the solution you need. It's important to first determine which mechanical properties are going to be critical to your part's function. Desktop Plastic Injection Molding Machine The Desktop Plastic Injection Molding Machine was created to address a specific need for designers, R&D professionals, educators, hobbyists, and low volume specialty manufacturers. In the case of injection molding, nylon is subjected to high compression and decompression within a short period of time. We have a rich experienced team, advanced equipment, ERP management system, which make us better on the precision injection molds making with excellent service, good quality injection molds, and after-sales insurance. Phenolic was the first plastic material molded by Rebling. Our proprietary compounds are designed to perform in a wide range of applications with varying chemical exposures, pressures and temperatures. The process generally has the advantages of being more readily automated and of permitting finer part details. FRP Materials Selection Guide is a part, is intended to give practicing engineers an understanding of composites technology in order that they may be able to effectively incorporate FRP, polymer concrete,. Plastic molding material selection can dramatically affect your plastic part's tensile strength, temperature resistance, appearance, life-span, and production cost. Proper material selection is critical in plastic injection molding gate design. Here's a quick reference guide to wall thicknesses, surface finishes, materials, and other important features for rapid injection molding. We have over 50 years of experience using certified commodity and engineering resins that adhere to our stringent manufacturing standards. Plastic Injection Molding Machine,Horizontal Injection Ningbo HYSION mainly supplies stone injection molding machine, horizontal injection molder, stone crusher, belt conveyor, stone perform mold, and more. Solution Guide Injection molding machine 1. Go to the Composite Selection App The Guide. Another challenge in doing DOE on injection molding is the number of parameters that can impact your response (and these could be too many as well). Compound selection, the first part of this gasket design guide, is about asking and answering three main questions: Which materials can withstand the environment? What are their advantages and disadvantages? What are their material costs? To determine which materials can withstand the environment, consider media, temperature, application, and. Sometimes this happens right on the factory floor. One reason for this is the increased performance requirements of the finished articles. PRODUCTVEPLASTICS. Silicone Materials Selection Guide. Therefore, How to choose the suitable. Thumb Plastics, Inc. Injection molding is a molding procedure whereby heated and plasticized thermoplastic or thermoset material is injected under high pressure into a relatively cool mold cavity for solidification. Many of these team members have been committed for a number of years. These materials are each engineered with a unique purpose in mind for quantities from the low hundreds to tens of thousands. Material presented is both an excellent foundation for further development and an extensive update for those already working in the field. D7209 Guide for Waste Reduction, Resource Recovery, and Use of Recycled Polymeric Materials and Products. Injection Molding, in Design News Direct. Injection molding temperature controllers or tempe rature control units, are commonly used in the plastic injection molding industry. Shop from our selection today to find top-of-the-line mold making materials made by Pol-Ease, Polytek, EasyMold, Stoner Molding Solutions, and other reputable brands. Injection molding typically is capable of. Injection molding materials. Hair care product development is strongly influenced by the growing, changing global marketplace. Our services include sales of used granulators, chillers, and all types of plastic processing machinery. Injection Molding Training Classes; Part Design Review; Material Selection; Expert Witness & Testimony; Plastic Part Failure Analysis; Injection Molding Processing; Industry Websites; Injection Molding Resources; Thermoplastic Material Selection Guide; Polyethylene (LDPE & HDPE) Units of Conversion; Temperature Conversion; Basic Calculations. Haifu Mould have discussed a lot of process of plastic injection mould design before, and one of them mentioned drawing injection molding assembly. Plastic Injection Molding : Mold. 10 Most widely used injection molding materials Material Properties. What is injection molding used for? IM technology is mainly used for manufacturing plastic parts. When the material solidifies, the mold is unclamped and the finished part is ejected. Injection molding is the most common method of part manufacturing. 4 The Injection Cylinder 27 3. Injection molding is a manufacturing process commonly used to create a large quantity of plastic parts. This makes electricity costs—and the ability to reduce those costs—of prime importance. Welcome to Valencia Plastics We are a complete manufacturer of Custom Plastic Injection and Blow Molded products. This guide will attempt to give approximate cycles for each type of mold (excluding wear caused by material abrasion, poor mold maintenance and improper technique). Once the parts are cured, the mold is opened, parts are removed and the process repeats. Whether your project calls for HDPE injection molding, polypropylene injection molding, ABS plastic molding, PVC injection molding, or something else, our FEA engineers have the expertise to help you determine the ideal part design and material for your application. PRODUCTVEPLASTICS. In many instances, injection molding isn't the best or only choice for fabricating plastic components. Mold life, because of variations in part design and molding conditions, cannot be guaranteed. offers a wide variety of materials to meet your two-shot injection molding needs. When a part is injection molded, shrinkage will always occur due to the density of the polymer changing from the processing temperature to the ambient temperature. In injection molding (a versatile process used to produce a wide variety of end products), 90 percent of the energy costs go toward electricity. Pending proper mold design, material selection, and product design, the rejection rate for plastic injection molding can be lower than one percent. 5 and 10 business day expedite options available for molding tools and molded parts. O-Ring Materials Selection Guide » Oring Material Compatibility Information Datwyler's high performance o-rings are available in a variety of materials, in both standard and custom sizes. The material is heated to a flowing state and injected under pressure from the heating chamber through a series of runners or sprues into the mold. Choosing the right kind of resin for your plastic injection molding project is crucial and is considered plastic injection 101. We trust your engineering team has been working hard on the design side. Injection molding is a process in which solid thermoplastic resin pellets are melted, injected into a mold, and then cooled back to a solid state in a new form. Ultimately, material selection must be based upon your proto-type testing under actual, end-use conditions. The electric type has become increasingly more in demand because it can be used in clean rooms and it is energy efficient. Hair care product development is strongly influenced by the growing, changing global marketplace. METAL INJECTION MOLDING MATERIALS. All injection molding orders have a team of dedicated Fictiv employees working tirelessly behind the scenes to ensure your. Plastics Materials Guide Nicolet Plastics provides expert advice about the plastic molding materials that drive the cost, function, versatility and production of your parts. This guide contains information and diagrams specific to the Blow Molding process that will help you develop a solid understanding of several important design and material property factors to consider when developing a blow molded part. On this page you will find the online, condensed version of this guide, offering quick answers to your injection molding questions. The usual injection of molten plastic is assisted by. The last thing you want is the wrong material based on machining a part from a stock resin that's been cast into bar stock or flat stock. Injection Molding of XIAMETER™ Liquid Silicone Rubber Consumer Solutions Preface Nowadays injection molding of liquid silicone rubbers is becoming increasingly important. Click the button below to get started. In addition, more and more producers of rubber parts are seeing benefits in the high. Our proprietary compounds are designed to perform in a wide range of applications with varying chemical exposures, pressures and temperatures. Texas Injection Molding help guide our customers through the complex material selection process to find cost effective solutions with the right performance. Allstates Rubber & Tool Corp. Plastic Injection Molding Material Selection Guide will help you start a new project at the very beginning. MATERIAL SELECTION Xirtec®140 PVC is the chosen material for the Drain-Guard systems. 8 of 65 MACHINE SELECTION Typical Injection Molding Machine Typical Injection Molding Screw Figure 3 Figure 4. including injection molding, dry pressing, isostatic forming, and. This brochure does not cover part design. The Process Small Precision Tools’ injection molding process is a combination of powder, injection molding, and sintering technologies. This design guide outlines various selection criteria with helpful technical data and comparisons to alternative materials. If you need a material that is not listed, please let us know and we'll do our best to obtain your specific plastic resin material. This specification is intended to be a means of calling out plastics materials used in the fabrication of end items or parts. com injection molding reference guide materials, design, process optimization, troubleshooting and. Energy-saving performance Molding support Support for maintenance Enriched Hiroshima injection R&D center Comparison of the power consumption amount ※Hydraulic machine: 100 standards Molding support function Molding guide from mounting mold to initial set up of molding conditions to corrective measures Reduction support for power consumption. INJECTION MOLDING HANDBOOK. Plastics 101: Selecting the Right Material for Injection Molding With over 85 thousand types of injection molding plastic materials to choose from, you can only imagine how overwhelming it can. Sample – Thermoplastics Material Guide; Mold Tryouts and Optimizing the Injection Process. Manufacturers commonly use Liquid Injection Molding (LIM) to form Liquid Silicone Rubber (LSR). PRODUCTVEPLASTICS. The ability of phenolic to maintain its mechanical and electrical properties at high operating temperatures is the principal reason for its use today. This is a beginner level class, assumes no / little experience designing plastic parts. Injection molding is a manufacturing process in which a molten thermoplastic material is injected at high pressure into a mold, resulting in a desired product. Our dedicated white paper will show you how to adhere to proper Design for Manufacturing (DFM) practices by explaining design considerations, plastic material selection and common medical injection molding challenges. Application: Automotive parts, Electronic housings, Medical component, Consumer products. To make limitations clear, each material profiled in this site has an Engineering Notes section dedicated to identifying these attributes. Whether you're looking for a purging compound to quickly transition from one color to another or eliminate contamination that causes rejects, ASACLEAN has the solution you need. Plastic molding material selection can dramatically affect your plastic part's tensile strength, temperature resistance, appearance, life-span, and production cost. We employ a team of skilled technicians and engineers that guide our prospective customers to make the right choice of machines and thereafter provide consistent support for spares and service. The industry-standard for material selection, UL IDES is relied upon by over 395,000 plastics professionals and 315,000 product designers and engineers. Search for: Maple corner molding. Sometimes this happens right on the factory floor. 18 mm) suggested) reduces material residence time in the barrel and helps accommodate machine variations. Therefore, How to choose the suitable. To help you select the right plastic for your mouldings, this plastic moulding material selection guide lists the most common plastic material types available together with an overview of basic properties of each plastic when in natural colour unfilled grade. September 7, 2018. Our authors are industry experts who offer a wide range of practical information on injection molding. Additionally, the Injection Molding Process Technician installs, removes, and troubleshoots complex plastic injection molds using various tools in a safe and efficient manner. Due to this wide range of available materials, the selecting the right one for your. Plastic Injection Molding Material Selection Guide. Plastic Design International is a Plastic Injection Molding company providing plastic manufacturing of custom plastic injection molds and injection molded plastic parts. Another key factor to injection molding design is material selection. Liquid injection molding (LIM) is an industrial fabrication process that molds materials into a broad range of components and products. 10 Most widely used injection molding materials Material Properties. اسم المؤلف. We have decades of experience in design, tooling, and manufacturing plastic parts. With hundreds of commodity and engineering resins available on the market today, the material selection process for plastic injection molding jobs can often seem daunting at first. D7209 Guide for Waste Reduction, Resource Recovery, and Use of Recycled Polymeric Materials and Products. Inventor tools used in the process. There are 1,000s of materials available for use in injection molded products, it can be a daunting task to determine the optimal material for your particular application. With design and material selection decided, processing optimisation becomes critical to drive your product quality and manufacturing yields higher. Application: Automotive parts, Electronic housings, Medical component, Consumer products. Free Online Library: Injection molding systems suppliers' data sheets. It is a robust method in which the product can vary greatly in size, complexity, and application. have been developed so far, but presently the in-line screw type injection molding machine as shown in Figure 1・1-1 has become the main type. The following information is provided for reference only. plastic moulding material selection guide. Some advantages of injection molding are high production rates, repeatable high tolerances, the ability to use a wide range of materials, low labor cost, minimal scrap losses, and little need to finish parts after molding. Compounding is an exacting, yet creative, science. NONNENMANN is specialized in the production of cutting and forming punches as well as the corresponding matrices made of hard metal, HSS and ceramics. METAL INJECTION MOLDING MATERIALS. Injection molding is a manufacturing process for making parts from both thermoplastic and thermosetting plastic materials. This is a beginner level class, assumes no / little experience designing plastic parts. The different version of the Polycarbonate resin cover a wide range of manufacturing machinery,ie: Injection Molding, Extrusion, Blow molding, etc. This design guide outlines various selection criteria with helpful technical data and comparisons to alternative materials. Screwdriver handles, toys, eyeglass cases, handles, knobs, etc. Rebling engineers can assess your project to determine if ABS molding is a possibility. The information accuracy of these ratings cannot be guaranteed, nor is it a complete list due to the extensive area of this field. Yet, 3D printing cannot always provide a complete assessment of a part's functional performance because 3D material properties may be different than those used in injection molding. Plastic molding material selection can dramatically affect your plastic part's tensile strength, temperature resistance, appearance, life-span, and production cost. At The Rodon Group, we understand the unique benefits and properties of different types of plastics and work closely with clients to find the best fit for their project. Insert : A part formed from a second material, usually a metal that is placed in the molds and appears as an integral structural part of the final molding. The same material used in each of the manufacturing process will produce different results. Visit our site to learn more about our plastic injection molding part design services, and contact us today to start your next project!. Auto loader machine ×. Introduction: One of the most common methods of converting plastics from the raw material form to an article of use is the process of injection moulding. 새한 주식회사는 가구용 부자재 제조, 플라스틱 성형사출품, 전자접촉기 oem생산 등 사업으로 미래를 여는 기술, 최고의 경쟁력을 갖춘 제품으로 고객의 가치 향상을 위해 노력하고 있습니다. MATERIAL SELECTION Xirtec®140 PVC is the chosen material for the Drain-Guard systems. Injection molding is a manufacturing process in which a molten thermoplastic material is injected at high pressure into a mold, resulting in a desired product. StockCap, a Sinclair & Rush company, is a leader in flexible protection, including caps and plugs. The result is a unique material that meets your design criteria for performance and appearance. Material selection. Eck Plastic Arts is a Woman Owned manufacturer that produces quality made plastic parts. D4000 Classification System for Specifying Plastic Materials. Mold Maintenance & Tooling (hot runner systems, tooling for DFM). Fiberglass (FRP) composite materials and processes are explained in detail. Material Selection - A Primer for Injection Molding. Lecture five in the Design for Manufacturing Course focuses on one of Scott’s favorite topics: Injection Molding. China Thermoforming (Vacuum Forming) Thermoforming is a generic term that encompasses a variety of methods for producing three-dimensional parts from flat sheets of film. Common applications include electronic housings, knobs and dials and hand-held devices. In the last ten years, the advancements in technology coupled with the corresponding developments of material have hugely impacted the way 3D printing is viewed and relied upon by engineers, designers and manufacturers during development and production. The ACCE is the result of a year-round effort by members of the SPE Automotive and Composites Divisions. crusher for injection moulding machines china - LIMING. Engineering Manufacturing. We've also put together The Composite Material Process Selection Guide! Download this guide to see a visual of the major composite processes and materials to help guide you toward a good solution. Multiple plates are used and clamped together in order to segregate the mold cavity from the runner and injection ports. The most popular reasons for switching to plastics include: • Longer part life • Elimination of lubrication • Reduced wear on mating parts • Faster operation of equipment/line speeds. Sample – Thermoplastics Material Guide; Mold Tryouts and Optimizing the Injection Process. This seminar will also cover troubleshooting molding mistakes and alternative processes, and review the selection of an application's appropriate plastic material. Therefore, How to choose the suitable. Once the part inside the mold cools completely, the mold opens, and the part is ejected. Toughened Grades Delrin® 100ST POM homopolymer, Super Tough. From mascara brushes to lip gloss wands, applicators are becoming more unique and specialized. The injection molding process requires the use of an injection molding machine, raw plastic material, and a mold. For clients who truly understand the process of cable assembly molding, which can include cost advantages over a fully mechanical approach, the selection of a vendor is the key to procuring a robust and reliable product. The Custom-Pak blow molding design guide provides you with basic design tools for making engineered blow molded parts. Get your instant quote now. We have over 200 line items of Injection Materials in-house and we can run customer supplied materials along with sourcing specific materials or colorant that are not readily available. Material Selection Resin flow Molding Area Diagrams Antistat Nucleation Injection Molding Cylinder temperature Injection pressure Injection time Mold temperature Cure time Back pressure Screw speed Mold release Extrusion General Downstream Sheet Film Tape yarns Fiber Thermoforming / Solid Phase Forming Finishing Hot stamp printing. Download ICOMold's Plastic Injection Design Guide Check out our Library of Plastic Injection Molds article Go to our plastic injection molding and CNC machining case studies page to see how we helped customers on their projects. Compression molding, Transfer molding, Injection molding. Compound selection, the first part of this gasket design guide, is about asking and answering three main questions: Which materials can withstand the environment? What are their advantages and disadvantages? What are their material costs? To determine which materials can withstand the environment, consider media, temperature, application, and. Injection Molding. Being an engineering company, we provide expert technical support to our clients, utilizing state of the art technology. Injection molding materials. When working with EVCO Plastics, you’ll benefit from decades of injection molded plastic material selection experience. Machine Selection Clamp Tonnage The actual required tonnage depends on a number of factors, including part design, polymer viscosity, poly-. Saturn Industries offers EDM raw materials and is a major industry source of both graphite and metal electrode materials. Material Selection Resin flow Molding Area Diagrams Antistat Nucleation Injection Molding Cylinder temperature Injection pressure Injection time Mold temperature Cure time Back pressure Screw speed Mold release Extrusion General Downstream Sheet Film Tape yarns Fiber Thermoforming / Solid Phase Forming Finishing Hot stamp printing. Equipped with a comprehensive array of molding and rubber-mixing equipment along with an onsite R&D lab, we can take your parts from concept to completion quickly and cost-effectively. Injection Molding Training Classes; Part Design Review; Material Selection; Expert Witness & Testimony; Plastic Part Failure Analysis; Injection Molding Processing; Industry Websites; Injection Molding Resources; Thermoplastic Material Selection Guide; Polyethylene (LDPE & HDPE) Units of Conversion; Temperature Conversion; Basic Calculations. Direct Drive Valves control the thickness of paper on new “state of the art” paper machines. Injection Moulding Machine Selection Criteria. velocity and pressure in plastic injection molding machines and wall thickness in plastic blow molding machines. Molding Characteristics. The Ultimate Design Guide for EVA Injection Foam Molding is material selection. Plastic Injection Molding Choosing the Best Resin Material Top 10 Critical Reasons to Bring Your Plastic Injection Molding Back to the U. Plastic Injection Moulding Material Selection For a general guide to choosing resins for injection molding parts. compression molding or SRIM include low material and labor cost, short completion time, the opportunity for in-mold painting, minimal to no waste, and the creation of a material which is stiff, strong, durable and resistant to warping and cracking. Injection Molding Material Selection Guide.