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How do you select a feeding and conveying system for your injection molding production?

2026/08/17 By le zhan

feeding and conveying system 2-2

A feeding and conveying system does more than transport plastic pellets from one location to another; it also establishes a controlled feed link between the raw material storage area and the injection molding machine. At the same time, it reduces manual handling, improves material supply reliability, and creates a cleaner, more scalable production environment. We recommend selecting a feeding system based on your actual production process and understanding the differences between the various types of automatic feeders available on the market. This product selection guide introduces Topstar’s main feeding and conveying systems and their differences, and explains the most suitable production scenarios for each automatic feeder.

First, Consider Material Supply Requirements

Before purchasing an auto loader or hopper receiver, you should first clarify the material handling conditions in your injection molding process. This helps avoid the pitfall of selecting a model based solely on conveying capacity while overlooking key factors such as conveying distance, material properties, the number of machines, or cleanliness requirements.

Different plastic materials place varying demands on conveying systems. Common injection molding materials include PP, PE, ABS, PC, PA, PET, and others.

Virgin pellets are generally easier to convey, while recycled and regrind materials may generate more dust and fine particles. Optical-grade materials require even stricter contamination control. For this reason, Topstar offers a diverse range of material-contact components and filtration configurations tailored to different conveying applications, rather than relying on a one-size-fits-all solution.

Therefore, the primary principle for selection is simple:

First, determine the feeding configuration based on material characteristics, then determine the specifications and dimensions of the conveying equipment based on production requirements.

Matching Conveying Capacity, Material Consumption, and Production Layout

When selecting feeding and conveying systems, it is also necessary to comprehensively consider material consumption and conveying distance. The system must have sufficient conveying capacity to meet actual material demands while also accommodating the conveying range required by the production layout. Over-sizing the feeding and conveying equipment may lead to unnecessary complexity, while under-sizing may result in unstable material supply.

The basic selection principles are as follows:

Single machine + low demand + short distance → Compact, integrated auto loaders

High material demand + long conveying distance → High-capacity conveying system

Multiple machines + shared material source → Detachable auto loaders with multiple hopper receivers

Selecting the Right Topstar Feeding and Conveying System

Once you have identified the material characteristics, production capacity requirements, and workshop layout needs, let’s take a look at the equipment configurations available in Topstar’s feeding and conveying systems.

Feeding and Conveying System: TAL Series Single Autoloaders

The TAL series single autoloaders are specifically designed for direct installation on injection molding machines. Their core advantages are simplicity and efficiency. There is no need to build a complex centralized conveying network; mount the feeder directly above the injection molding machine to automatically supply material according to production needs.

Key features include:

  • All-stainless-steel construction;
  • Dual-layer filtration system;
  • Combination of filter cloth and stainless-steel mesh for filtration;
  • Motor reverse rotation dust removal function;
  • Motor protection system;
  • Intelligent material level sensing;
  • Automatic low-material alarm.
  • When should you choose the TAL Series standalone feeder?

This equipment is particularly suitable for standalone production, compact workshops with limited installation space, short conveying distances, applications requiring high ease of operation, and scenarios involving injection molding machines that require independent feeding. It is an excellent choice when different machines process different materials and manufacturers wish to avoid unnecessary cross-machine material contamination.

TAL-Single-Autoloader

Feeding and Conveying System: TAL Series Detachable Autoloaders, Enabling Flexible Multi-Machine Conveying

The TAL Series detachable autoloader features a unique architectural design. Its main controller and hopper receivers are physically separated. This split design offers exceptional installation flexibility, allowing multiple hopper receivers to be configured around a single feed source. Two or more hopper receivers can be combined to achieve a “one-to-many” conveying mode. A detachable autoloader can supply material to multiple receiving points according to the production layout.

Depending on the selected configuration, the TAL Series detachable autoloader can achieve a maximum conveying capacity of up to 700 kg/h. This makes the TAL Series detachable autoloader ideal for production environments with high material demand. It also supports conveying distances of up to 10 meters; When the material source is located far from the injection molding machine, it offers significant advantages over compact, machine-mounted feeders.

TAL Separate Suction Host Series

TAL Series Detachable Autoloader(Open type)—Easy to Maintain and Clean to Operate

The TAL Series open-type detachable autoloaders are designed for customers who value both industrial aesthetics and dust management.

Featuring a stainless steel construction, it ensures a clean material conveying process while presenting a professional appearance suited to modern production environments. Its most notable feature is the “downward suction” conveying design, which incorporates the following components:

Cyclone separation baffle;

A separate dust collection bin;

A filtration system.

This configuration effectively treats dust before it can overload the main filter element. The TAL open-style model uses cyclone separation baffles and a separate dust collection bin to significantly reduce the dust load reaching the filter. Rather than allowing all dust to accumulate directly on the filter, a portion of the dust is separated before it reaches the filtration stage.

TAL-Detachable-Autoloaderopen-type

Selecting the Right Hopper Receiver for Effective Material Control

Hopper receivers are critical components in feeding and conveying systems, serving as the link between material conveyance and the injection molding machine. When selecting a hopper receiver, it is important to comprehensively consider material cleanliness, application requirements, conveying architecture, and the level of automation.

Topstar offers a variety of hopper receivers to meet different production needs:

FSR Series Optical-Grade Stainless Steel Hopper Receivers: Designed specifically for optical material applications with extremely high cleanliness and material visibility requirements, these are suitable for producing optical lenses, light-guiding components, and other products.

SR Series Stainless Steel Hopper Receivers: A general-purpose option suitable for conveying standard clean materials; constructed of stainless steel, they facilitate material monitoring and equipment cleaning.

CSR Series Centralized Stainless Steel Hopper Receivers: Designed specifically for central conveying systems, these are particularly suitable for scenarios where multiple injection molding machines share a single material source.

MR Series Magnetic Induction Hopper Receivers: Utilize magnetic induction technology to monitor material demand and support automatic feeding, thereby reducing unnecessary manual intervention.

Therefore, the selection logic can be summarized as follows:

Cleanliness-sensitive applications → FSR Series

Standard machine-side feeding → SR Series

Centralized multi-machine conveying → CSR Series

Automated material level control → MR Series

Hopper-Receiver-2

Final Selection Guide for Different Injection Molding Applications

The simplest decision-making method is to match the system to the actual production scenario.

The selection principles are very clear:

Production ScenarioRecommended Topstar SolutionMain Reason
One IMM, compact installationTAL Series Single AutoloadersSimple machine-side feeding
One IMM with clean material handlingTAL Single + stainless hopper receiverClean material contact
Multiple IMMs using shared materialTAL Series Detachable AutoloadersOne-to-many conveying
Long-distance conveyingTAL Series Detachable AutoloadersUp to 10 m loading distance
High material demandTAL Series Detachable AutoloadersUp to 700 kg/h, configuration dependent
Crushed/recycled materialTAL Detachable / Open TypeIndependent filtration and dust management
Dust-intensive conveyingTAL Detachable Autoloaders Open TypeCyclone baffle + separate dust barrel
Optical materialsFSR Series Optics Stainless Steel Hopper ReceiversCleanliness-focused material handling
General stainless-steel material handlingSR Series Stainless Steel Hopper ReceiversClean and durable construction
Centralized material distributionCSR Series Central Stainless Steel Hopper ReceiversCentral conveying architecture
Magnetic-induction receivingMR Series Magnetic Induction Hopper ReceiversAutomatic sensing and feeding

Do not base your selection solely on the automatic feeder itself. Instead, comprehensively consider material characteristics, production capacity, conveying distance, the number of injection molding machines, cleanliness requirements, and maintenance needs to select a complete feeding and conveying system.

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