Injection Molding
In injection molding, material is fed through a hopper into a barrel where a reciprocating screw mixes and melts the material then injects it into a mold.
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ESSENTIAL READING
VIEW ALLIs There a More Accurate Means to Calculate Tonnage?
Molders have long used the projected area of the parts and runner to guesstimate how much tonnage is required to mold a part without flash, but there’s a more precise methodology.
Read MoreBack to Basics on Mold Venting (Part 2: Shape, Dimensions, Details)
Here’s how to get the most out of your stationary mold vents.
Read MoreBack to Basics on Mold Venting (Part 1)
Here’s what you need to know to improve the quality of your parts and to protect your molds.
Read MoreHow to Design Three-Plate Molds, Part 1
There are many things to consider, and paying attention to the details can help avoid machine downtime and higher maintenance costs, and keep the customer happy.
Read MoreHot Runners: How to Maintain Heaters, Thermocouples, and Controls
I conclude this three-part examination of real-world problems and solutions involving hot runners by focusing on heaters, thermocouples, and controls. Part 3 of 3.
Read MoreMold Maintenance, Tooling Know How
The ability of technicians in an injection molding shop to fix, modify or upgrade a mold has a huge impact on that company’s bottom line. With this collection of content, we’ve bundled some of the very best advice on repairing and maintaining injection molding machines.
Read MoreLatest Injection Molding News And Updates
Allegheny Performance Plastics to Enter Health Care Sector
The custom molder has secured multiple projects in health care and will be adding cleanroom and white-room spaces, as well as injection molding machines, in support.
Read MoreSlimmer All-Electric Press Debuts
A slimmed-down version of Engel’s all-electric, e-mac injection molding machine is among eight displays, which also include LSR micromolding, quick mold changes and a cube mold.
Read MoreFaster Top-Entry Model Among 19 Robots in Orlando
NPE2024: Sepro Group will introduce the newest S5-25 Speed robot, promising 63% faster acceleration, as one of 19 robots on display at its booth and partner booths at the show.
Read MoreCompounding and Injection Molding Combined in Circularity Display
NPE2024: KraussMaffei aims to “make plastic green” with in-booth moldings and recycled plastics converted into other applications through a combination of injection molding, extrusion and inline compounding.
Read MoreIMM Cells Display Communications, Energy Measurement and Energy Recovery
NPE2024: Wittmann will feature five injection molding machines incorporating its range of robotics and auxiliaries, with all products employing industry 4.0 communications, energy measurement and a brand-new red color.
Read MoreDirect Communication, Control Between Cobots and IMMs
NPE2024: Universal Robot will show how its Injection Molding Machine Interface (IMMI) module facilitates direct communication and control between its robots and molding machines.
Read MoreFeatured Posts
Understanding the Effect of Pressure Losses on Injection Molded Parts
The compressibility of plastics as a class of materials means the pressure punched into the machine control and the pressure the melt experiences at the end of fill within the mold will be very different. What does this difference mean for process consistency and part quality?
Read MoreBack in the Family Business
In its 45th year, Precision Molded Plastics has carved out a technology and market niche, growing not just when opportunities arise but when they make sense, after its leader changed careers to keep the family business from changing hands.
Read MoreImprove Production Rates Via Screw Design — Barrier vs. General Purpose vs. Melt Uniformity
I’m looking for a few good molders to help trial a new screw design, and share data and results for a future article to prove the benefits of a melt uniformity screw.
Read MoreIn the Zone: Bottles
The Bottle Zone is the place to explore cutting-edge bottle and container technologies.
Read MoreAutomotive Awards Highlight ‘Firsts,’ Emerging Technologies
Annual SPE event recognizes sustainability as a major theme.
Read MoreThe Experience Curve and Well-Trained Process Technicians
Pairing external big picture training with internal job-specific instruction can help your process technicians meet quality expectations as well as production targets.
Read MoreFAQ: Injection Molding
Plastic injection molding is a cyclical manufacturing process that allows for cost-efficient production of a mass number of identical parts made from either thermoplastic or thermoset materials.
Cushion values in injection molding ultimately are an indication of a part’s quality, especially its dimensions. A consistent cushion will create consistent part dimensions.
It is important to determine which type of bubble your part has, and what the root cause might be. Determining bubble type will allow you to pinpoint the source and determine your next course of action to eliminate the problem.
Most molders are still relying on “general-purpose” screw designs that go back 30 years. With all of the technical improvements that have been made on machines over that time, nothing has been done to improve melt uniformity. We still use “general-purpose” (GP) screws, which well-known screw designer Bob Dray wisely has called “no-purpose” screws. That is they do not melt plastic uniformly. Processing with a uniformly melted plastic would seem like a high priority, but it has seen little if any attention.
Injection Molding Supplier Categories
- Thermoformers
- Injection Molding Machines
- Platens
- Thermoforming Molds
- Extrusion Blow Molding Machines
- Pre-expanders, Polystyrene Bead
- Trimmers, Deflashers for Blow Molding
- Stretch-Blow Molding Machines
- Nonferrous Metals for Molds
- Mold/Die Management Systems
- Injection Molds
- Mold Steels
- Injection Blow Molding Machines
- Dip-Blow or Compression-blow Molding Machines
- Cutting, Stamping, Trimming Dies
- Quick-mold-change Equipment
- Mold Making and Repair Equipment
- Injection Molding Nozzles
- Parison Programmers
- Mold Components
- Injection Blow Molds
- Presses, Polystyrene Bead
- Spray Coating Systems (for Bottles)
- Rotational Molds
- Inserts
- Accumulators (Melt)
- Structural Foam Machines (for Thermoplastics)
- Injection Molding Non-return Valves
- Mold Evacuation Systems
- Mold Grease
- Rotational Molding Machines
- Compression/Transfer Molds
- Mold-cleaning and Maintenance Chemicals
- Nonmetallic Tooling Materials
- Hot Runner Components
- Foam Molds
- Compression/Transfer Presses
- Prototype Molds