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The Science of Temperature Control in Candy Extruders From Overall Heating to 3-Zone Independent Control

2026-07-13

 

The extrusion process is a critical step in candy forming, and its precision directly impacts the final product's shaping, appearance, and texture. During the extrusion of candy ropes, you may occasionally notice intermittent feeding or even direct breakage. This not only causes raw material waste but also compromises the efficiency and aesthetic quality of subsequent forming stages. In many cases, the root cause of this material breakage lies in inadequate temperature control within the machine.

 

 

 

1. The Pain Point: Uneven Heating and Poor Flowability Leading to Material Breakage

 

Candy raw materials are highly sensitive to temperature fluctuations. Traditional single-tank or basic heating systems typically only provide overall or rough heating for the extruder, resulting in an objective flaw: uneven sizing of the extruded candy ropes.

 

As the candy mass flows through the barrel, localized low temperatures can cause the mass to harden and its flowability to drop, thereby increasing extrusion resistance and potentially leading to machine jamming or motor burnout. Conversely, localized high temperatures may alter the properties of the mass, triggering coking. This uneven temperature distribution prevents the formation of continuous, smooth ropes during extrusion, making it difficult to guarantee consistent material output.

 

 

2. Technical Insight: What is Independent Temperature Control?

 

To address the aforementioned issues, candy extruders incorporate a zoned temperature control system. Simply put, this divides the extruder into separate, independently controlled temperature zones.

The core independent temperature control system typically consists of three sections: the upper chamber, the lower chamber, and the die head.

 

By dividing the extruder into these three independent zones, each section can be equipped with its own temperature sensor and a dedicated heating/cooling unit. This allows operators to set the optimal temperature for each specific area based on the unique characteristics of the candy mass.

 

 

3. Working Principle

 

Three independent circulating temperature control systems serve as the hardware foundation of this concept. Equipped with three separate heating circuits at 6kW each, the system provides precise temperature control for the upper extrusion chamber, the lower extrusion chamber, and the die head, creating a highly accurate thermal balance system.

 

The PLC system automatically controls heating or initiates cooling programs based on real-time temperature feedback to maintain stable water temperatures in each zone. Under this precise control, the candy mass maintains its ideal state and viscosity from the extrusion chamber to the die head. Consequently, the mass flows continuously, stably, and evenly through the die holes, significantly reducing the occurrence of material breakage, streaks, and air bubbles.

 

The transition from basic heating to 3-zone independent temperature control reflects the evolution of candy manufacturing from fundamental to precision engineering. Only by mastering the science of temperature can manufacturers produce premium candies with flawless appearances and consistent textures.

 

 

If you are seeking extrusion equipment that offers precise temperature control to elevate your candy quality, consider Zhonghong Machinery's Candy Extruders. We are committed to providing more scientific and stable temperature control technologies to help reduce material waste on your production line, ensuring every single candy achieves its ideal state.

 

 

Low water pressure, uneven heating, frequent breakdowns?

2026-07-07

Low water pressure, uneven heating, frequent breakdowns? Shinhoo AHM Series stainless steel multistage pump solves it all.

 

In small commercial spaces and whole-house heating systems, users often struggle with fluctuating water pressure, poor heating circulation, corrosion-induced leaks, and excessive noise. A restaurant may see water flow drop during peak dining hours – hurting service quality; a villa's underfloor heating may leave rooms cold at the far end – compromising comfort; rusted pump components can contaminate the water supply and shorten equipment life; and frequent, costly maintenance eats into operating budgets.

 

Multi-stage high head

With a multistage impeller design, the maximum head reaches up to 59 meters, ensuring stable pressure delivery for high-rise or long-distance boosting applications.

 

Dual connection options

Compatible with both clamp and threaded connections, enabling fast and flexible installation to suit various piping systems with minimal onsite adaptation.

 

Two mechanical seal choices

Available in graphite/ceramic or graphite/silicon carbide – select the optimal type for your media to ensure durable sealing and extended service intervals.

 

All-stainless-steel wetted parts

Casing, impeller, and shaft are all made of stainless steel, providing excellent corrosion resistance, long service life, and clean water delivery.

 

Easy maintenance & long life

Designed for straightforward routine upkeep, reducing total cost of ownership over the equipment’s lifespan.

 

High protection & NSK bearings

Equipped with premium NSK bearings for low-noise, smooth operation, and built with high-protection-grade construction – suitable for noise-sensitive commercial and residential environments.

With its solid data and proven reliability, Shinhoo AHM Series offers an efficient, durable pumping solution for small-to-medium commercial and premium residential heating applications.

Shinhoo Duplex Pump System丨Basic 50-16 FU Pro

2026-06-26

Introduction

Modern villa water systems face unstable and unpredictable water demand due to simultaneous multi-point usage. Bathrooms, kitchens, laundry rooms, and irrigation systems often operate at the same time, leading to pressure drops and system interruptions.

Traditional single pump systems are not designed for this type of load variability. When demand spikes or a pump fails, the entire household water supply can be disrupted.

Shinhoo Duplex Pump System -Basic 50-16 FU Pro is designed to solve this problem through a dual-pump Duty/Standby architecture, ensuring continuous, stable, and intelligent water supply for villa applications.

Product Overview

Shinhoo Duplex Pump System-Basic 50-16 FU Pro is a dual circulation pump system with integrated relay control designed for residential villa water supply.

It operates using two coordinated pumps in a Duty/Standby configuration, enabling automatic switching between pumps based on system demand or failure conditions.

Core concept:
Continuous Water Supply Through Intelligent Dual Pump Coordination

System Architecture & Operating Modes

The system includes a relay-based control panel supporting three operating modes:

Alternate Mode (A – Load Balancing Mode)

· Pumps switch every 24 hours

· Balanced runtime distribution

· Reduced mechanical wear

· Automatic backup activation in case of failure

Standby Mode (S – Continuous Protection Mode)

· One active pump + one standby pump

· Instant automatic switchover upon failure

· No interruption in water supply

Single Mode (OFF – Energy Saving Mode)

· One pump operates independently

· Reduced energy consumption during low demand periods

Key Benefits

Shinhoo Duplex Pump System provides three major performance advantages:

· System Stability improved by up to 70% through dual redundancy

· Service Life extended by up to 50% through alternating operation

· Maintenance Cost reduced by up to 50% due to independent pump service capability

These benefits ensure reliable water delivery in multi-storey villa environments with fluctuating demand.

Engineering Design & Installation Features

The system is designed with modular installation architecture for ease of deployment:

· Integrated relay control panel with A / S / OFF settings

· Clearly labeled power and signal terminals

· Plug-and-play wiring structure for faster installation

· Real-time status indicators for operational visibility

Safety Note: Power must be fully disconnected before accessing terminal components.

Real-Time Monitoring & System Status

The relay panel provides clear operational feedback:

· Green steady light: Normal operation

· Flashing green light: Switching or standby mode

· Red indicator: Fault or system alert

This allows real-time monitoring of system health without additional diagnostic tools.

Application Scenarios

Shinhoo Duplex Pump System-Basic 50-16 FU Pro is suitable for:

· Luxury villa water supply systems

· Multi-storey residential buildings

· Domestic hot water circulation systems

· Integrated HVAC water distribution systems

· Garden irrigation + household combined systems

It is especially effective in environments with simultaneous multi-point water demand.

Conclusion

Shinhoo Duplex Pump System-Basic 50-16 FU Pro delivers a stable and intelligent solution for villa water supply challenges through its Duty/Standby dual pump architecture.

By combining automatic switching, balanced operation, and modular design, the system ensures:

· Continuous water availability

· Higher operational reliability

· Reduced maintenance risk

· Improved energy efficiency

Shinhoo provides a reliable foundation for modern villa water systems where uninterrupted water supply is essential.

FAQ

What is a duplex pump system used for in villas?

It ensures continuous water supply by using two pumps in a Duty/Standby configuration, preventing water interruption during pump failure or maintenance.

Does the system automatically switch pumps?

Yes. The system automatically switches between pumps based on mode settings or failure detection.

What happens if one pump fails?

The standby pump immediately takes over, ensuring uninterrupted water supply.

Is this system energy efficient?

Yes. It supports single-pump mode during low demand periods to reduce energy consumption.

Can it be used in small residential homes?

It is primarily designed for villas and multi-storey buildings with higher water demand.

Is installation complex?

No. The modular relay-based design simplifies installation for professional technicians.

Twin-Screw Extruder The Standard Choice for Premium Chewing Gum Production

2026-06-25

In the chewing gum and bubble gum industry, the term "premium" signifies superior texture and long-lasting flavor. If you look closely at high-end chewing gums on the market those that command a higher price, offer excellent chewability, and maintain their flavor for longer.You will find that their production lines almost universally feature a twin-screw extruder. It may not be the most expensive piece of equipment, but it is an essential staple for premium production lines. The reason is simple: it makes chewing gum production more stable, cleaner, and hassle-free.

 

 

1. PLC Automatic Control: Fully Digitalized Process

Premium chewing gum formulations are complex, incorporating various components such as gum base, sugar alcohols, and flavorings. Any fluctuation in ingredient ratios or mixing times can compromise the final texture and taste. Equipped with a Programmable Logic Controller (PLC), twin-screw extruders can:

1.Monitor parameters in real-time, including screw speed, material flow rate, and temperature across different zones.

2.Automatically adjust feeding speeds and screw configurations to ensure a continuous and stable output.

3.Compared to older production lines that rely heavily on operator experience, PLC control drastically reduces batch-to-batch variations and significantly minimizes fluctuations caused by manual operation.

 

2. Stainless Steel Construction: Hygienic and Durable

High-end chewing gum demands strict hygiene standards. Furthermore, ingredients like sugar alcohols and flavorings can cause ordinary steel to rust and develop off-flavors over time. Twin-screw extruders utilize food-grade stainless steel for all product-contact parts. The benefits are clear:

1. Rust-free and free from metallic odors.

2.Easy to clean, meeting the stringent audit requirements of food manufacturing plants.

3.Exceptional longevity, maintaining a pristine condition even after years of use.

 

3. Precise Temperature Control: Locking in Flavor and Texture

Temperature plays a critical role in chewing gum quality. Excessive heat causes the gum base to become sticky and the flavorings to evaporate, while insufficient heat leads to uneven mixing and extrusion difficulties. Twin-screw extruders provide highly stable temperature control, which means:

1. Flavorings are not degraded by high temperatures, resulting in a longer-lasting aroma in the final product.

2. The gum achieves the perfect chewy texture,neither sticky nor overly hard.

3.The defect rate is significantly reduced, preventing raw material waste.

 

Continuous Operation with a Failure Rate of Less Than 0.5%

What is the biggest fear for any factory? Frequent breakdowns that halt production for hours. For production lines handling large orders, stability is paramount. Twin-screw extruders are specifically engineered for long-term continuous production. Real-world operational data shows an annual failure rate of less than 0.5%.This translates to:

1. The confidence to accept long-term contracts from major clients.

2.Reduced reliance on extensive maintenance personnel.

3. High equipment utilization rates, leading to a faster return on investment.

 

The twin-screw extruder has become the industry standard for premium chewing gum production for good reason. Its PLC automatic control digitizes the manufacturing process, stainless steel construction ensures food safety and durability, and precise temperature control locks in flavor and texture. Backed by a continuous operation failure rate of less than 0.5%, it delivers unmatched reliability. For chewing gum manufacturers looking to break free from low-price competition and enter the premium market, a twin-screw extruder is not just a piece of machinery,it is your ticket to new heights of quality and efficiency.

Want to find the right twin-screw extruder model for your production capacity or explore production line upgrade solutions? Contact us today for a comprehensive technical assessment.

 

 

 

Boosting Forming Machine Productivity 3 Key pathways

2026-06-25

   

 

 

Pathway 1: Optimizing Mold Design

      As the core component of the forming machine, the mold directly contacts the gum base to complete the shaping process. Its effective working length determines the number of products formed in a single cycle, serving as the foundation for capacity improvement. Standard industry equipment typically features a mold length of 500mm, which limits the output per cycle.

      A viable solution is to extend the mold length from the original 500mm to 900mm or more. By optimizing the effective working length to increase the single-cycle output, this upgrade can boost production capacity by 10% to 15%.

 

Pathway 2: Streamlining Operational Processes

      Complex operating systems inevitably eat into the machine's actual working hours, thereby affecting overall capacity. Therefore, the user interface of the forming machine should prioritize ease of use to minimize operational errors.

     Furthermore, switching molds is required for different candy shapes. Cumbersome changeover procedures can significantly increase machine downtime. These procedural issues may seem trivial, but they are actually hidden killers that hinder capacity growth. By simplifying operational workflows, manufacturers can enhance process fluidity and Overall Equipment Effectiveness, paving the way for a significant boost in production capacity.

Pathway 3: Intelligent Control Systems

     Currently, most equipment on the market relies on mechanical core structures. These require skilled workers for manual debugging, which not only drives up labor costs but also suffers from weak stability. Since mechanical structures cannot make real-time adjustments, they often result in uneven gum pellet sizes.Long-term continuous production is key to unlocking full capacity. Therefore, equipping the forming machine with a stable, intelligent control system is crucial. This system supports the interaction between technicians and the machine, reducing maintenance frequency and defect rates while significantly improving product consistency.

 

     If you are seeking solutions to boost bubble gum production capacity, Zhonghong Machinery’s forming machines are the premier choice, perfectly balancing high output with stability. We invite you to contact us for detailed specifications and case studies, and let's explore the best path for your capacity optimization together.

Key Specifications & Performance:

1.Extra-Long Mold: 1010mm working length.

2.High Cutting Frequency: 45-48 cuts per minute.

3.Superior Stability: Defect rate remains below 5%.

4.High Capacity: Single unit output reaches 250-280kg/h, outperforming industry peers by 15%.

5.User-Friendly Operation: Features simple controls and one-touch mold changing.

6.Advanced Performance: Fully intelligent design driven by servo motors and a PLC core, equipped with a touch screen for maximum ease of use.

 

Essentials for a New Xylitol Factory Production Process and Staffing Plan

2026-06-25

For investors and factory managers planning a new xylitol production line, a clear and complete production workflow, paired with a scientific and reasonable staffing plan, is the key to a smooth launch and stable operation. Drawing on current mainstream automated xylitol chewing gum production techniques, this article comprehensively outlines the standard production process and provides a practical staffing plan that can be implemented immediately, offering valuable reference for new production lines or factories.

1.Raw Material Pre-treatment

The main raw materials for xylitol chewing gum include xylitol, gum base, maltitol, glycerin, lecithin, and flavorings. Before production, these raw materials need to be prepared and pre-treated according to the formula.

2.Melting and Mixing

After the gum base is heated and melted, xylitol and other auxiliary ingredients are added. They are fully mixed in a mixer to form a uniform chewing gum base.

3.Extrusion and Forming

The mixed gum base is extruded through an extruder and then pressed into uniform sheet blanks by a sheet-forming machine. Common shapes include sheets and pellets.

4.Cooling and Setting

The formed chewing gum enters cooling equipment to be cooled and set at a constant temperature, ensuring the texture and stability of the product.

5.Coating and Conditioning

For hard-shell xylitol bubble gum, coating and conditioning steps are required. A coating machine is used for coating, coloring, and polishing to give the product a brighter appearance.

 

Staffing Plan for a Fully Automated Xylitol Chewing Gum Production Line

Sugar Powder Machine: 1 HC

Oven: 1 HC

Mixer: 1 HC

Extruder: 2 HC

Tablet Forming Machine: 1 HC

Cooling Tunnel: 0 HC

Screening Machine: 1 HC

Packaging: 5 HC

Aging: 1 HC

Coating: 3 HC

Aging: 1 HC

Polishing: 1 HC

Aging: 1 HC

Packaging: 5 HC

Total: 19 HC

 

The above outlines the production process and staffing allocation for a basic xylitol production line configured by Zhonghong.

 

Building a new xylitol factory requires not only selecting stable and mature equipment but also planning the production process and staffing in advance. If you have further ideas about this project, feel free to contact us. Whether it's a basic production line or a customized solution, Zhonghong can provide you with professional and reliable plans.

Industrial Production of Spherical Bubble Gum Process and Equipment Analysis

2026-06-25

1.Raw Material Preparation

The core raw materials for bubble gum are gum base, glucose syrup, white sugar, glycerin, and flavorings. Before production, these ingredients need to be proportioned according to the type of bubble gum to be produced.

2.Mixing

The mixing step is key to bubble gum production, as it determines the quality of the gum dough. Specialized mixing equipment is required. After proportioning, the ingredients are sequentially added to the mixer and mixed until uniform, pliable, and free of lumps, meeting the standard before discharging.

3.Extrusion and Forming

The mixed gum dough is then transformed into predetermined shapes using extrusion and forming equipment. The dough is fed into an extruder to form a continuous rope, then sent to a forming machine to be pressed into continuous spherical, dinosaur-egg, pear, or other shapes.

4.Cooling and Setting

The formed gum pieces enter a cooling tunnel, where they are evenly cooled to achieve a moderate softness and hardness without sticking.

5.Coating

The cooled spherical gum pieces enter a coating machine, where they are repeatedly sprayed with coating syrup and dried layer by layer. This continues until the surface forms a uniform-thickness, consistent-color coating. After coating, the gum balls undergo a 24-hour aging process, then move to a polishing step to make the surface shiny and plump, further preventing sticking and extending shelf life.

6.Packaging and Quality Inspection

After coating, the bubble gum is packaged and undergoes quality inspection throughout the process.

 

 

Having understood the complete production process of a spherical bubble gum, what professional equipment supports each step? Next, we continue the breakdown.

 

1.Crusher

As a pre-production raw material preparation step, the crusher’s main function is to crush granular sugar into fine sugar powder, providing the basic sugar ingredient for subsequent batching and mixing.

2.Oven

The oven is essential in gum base candy production, primarily used to soften the gum base.

3.Mixer

After preheating and softening, the gum base is mixed with glucose syrup, flavorings, and other ingredients in the mixer.

4.Extruder

The extruder mainly consists of a frame and guard, transmission box and components, extrusion chamber components, temperature control circulation system, and electrical system. Depending on the candy structure (single-color/two-color) and output, different extrusion chambers (single-chamber/dual-chamber) can be selected.

5.Gum Rope Conveyor Belt

The conveyor belt for the gum rope serves a dual function in bubble gum production: it ensures continuous and stable transport after extrusion while simultaneously performing initial cooling and setting of the rope, laying the foundation for subsequent processing.

6.Forming Machine

The forming machine can change candy shapes freely. Depending on the final shape of the bubble gum (stick, ball, etc.), different forming equipment is needed to achieve precise shaping of the gum dough.

7.Cooling Shaker 

There are several types of cooling equipment, but the cooling shaker is more suitable for spherical bubble gum production. Its unique vibration and oscillating motion design effectively promotes uniform movement of the gum balls, prevents deformation, and ensures stable final product shape.

8.Coating Machine

The coating machine mainly consists of a main unit and a fan. Its function is to evenly coat the formed bubble gum balls with syrup, giving them a smooth, uniformly colored coating. A stable coating machine is key to determining the final appearance of bubble gum.

 

Above is the complete industrial production process and core equipment analysis for spherical bubble gum. From raw material handling to final product, every step relies on equipment support. For food processing enterprises, choosing the right production equipment is the core of producing high-quality bubble gum.

If you need to learn about or purchase bubble gum machinery, Zhonghong Machinery offers complete and efficient production lines as well as various standalone machines. Please feel free to contact us!

 

 

Selection of Cooling Equipment for Different Candy Production Lines

2026-06-25

In candy production, the cooling stage is crucial as it directly impacts the product's final quality, texture, and visual uniformity. A common misconception is that candy cooling is simply a matter of lowering the temperature, so any generic cooling equipment will do.However, in actual production, even seemingly similar candy categories have distinct material properties and molding methods. Therefore, the cooling equipment required varies, and the process design must be highly targeted. Using the categories in the table below as examples, this article will walk you through how to choose the right cooling equipment.

 

 

1. Cooling Tunnel — Xylitol Production Line

Under the blazing sun, shipments never stop — 39 color sorters stand ready for departure overseas

2026-06-17

In the dog days of summer, the ground burns hot while the workshop buzzes with relentless energy.
At the HAWIT production facility, packing and shipping never skip a beat —
39 color sorters have completed debugging one after another, packed batch by batch, and are heading to customer sites overseas.

 

 

High temperatures won't stop our frontline — sweat builds quality.
Production, assembly, debugging, securing, packing… every step is carried out with meticulous care.

39 machines, covering four main series:

 

•  Grain Color Sorters (21 units): 90-channel high-throughput design, specially engineered for small particles like rapeseed and millet — precisely removing off-color grains and impurities.
•  Rice Color Sorters (11 units): Tailored for rice processing, accurately eliminating off-color grains, chalky kernels, glass, plastic, and other hazardous impurities — safeguarding staple food safety.
•  AI Deep Learning Color Sorters (4 units): Equipped with high-definition lenses and self-training sorting models, tackling hidden defects such as wormholes, mold, off-color, and irregular shapes.
•  Mini Color Sorters (3 units): Compact size, high precision — ideal for small-batch processing or space-constrained environments, offering flexible deployment.

 

 

The scorching sun cannot melt our resolve; sweat cannot drown our passion.
From components to complete machines, from debugging to packing — every step undergoes rigorous quality inspection.

HAWIT color sorters have been exported to over 60 countries and regions worldwide, earning the trust of countless customers.

 

HAWIT Technology — making sorting smarter, and service warmer.

 

HAWIT AI Deep Learning Color Sorter---Solving the Same-Color Sorting Challenge for Black Melon Seeds

2026-06-15

Traditional color sorters rely on “eyes” to identify colors. When impurities share the same color as the seeds, they go completely “blind”.

HAWIT Technology proudly introduces the all-new AI Deep Learning Color Sorter. It does more than just “see”--- it “see through”. Upgrading from simple color recognition to a full multi-dimensional perception encompassing color, shape, and hardness, it leaves hidden impurities nowhere to hide. 

 

 

PART.01 --- A Smarter Brain

Traditional color sorters require manual parameter adjustments, which are time-consuming, labor-intensive, and struggle with complex materials.

HAWIT AI Deep Learning Color Sorter, based on deep learning and multi-dimensional modeling technology, automatically trains sorting solutions without starting from scratch.

The system continuously learns and evolves during operation. The more black melon seeds it sorts, the more accurately it identifies black impurities.

PART. 02 --- A Sharper Eye

Black goat dung mixed in black melon seeds is difficult for ordinary lenses to distinguish.

HAWIT AI Color Sorter integrates RGB visible light and near-infrared spectroscopy, capturing hidden information invisible to the human eye.

Whether it’s early-stage mildew, internal cracks, or foreign contaminants, multi-spectral technology sees it all at a glance.

PART.03 --- A More Comprehensive Observation

Black melon seeds and black goat dung are nearly identical in color. Relying solely on color will never tell them apart.

HAWIT AI Color Sorter fuses multi-dimensional data including color, shape, hardness, and texture to construct a complete profile of each material. Black melon seeds are smooth and oval-shaped; goat dung is rough and irregular.

Adopting a “coarse sorting first, fine sorting second” approach, it doesn’t just look at the “surface” - it looks at the “whole picture”. Same color? Still perfectly distinguished!

PART.04 --- A Faster Response

Traditional color sorters struggle with the high output demands of black melon seeds. Too slow, and they can’t keep up; too fast, and they can’t sort accurately.

HAWIT AI Color Sorter achieves deep synergy between AI algorithms and high-speed solenoid valves, enabling efficient and rapid material sorting. It breaks through the speed bottlenecks of traditional sorters, accurately removing black goat dung and other impurities while maintaining high-speed production. Perfectly suited for large-scale, continuous black melon seed sorting.

Sort fast, sort accurately - with black melon seed sorting, both efficiency and purity are achieved.

HAWIT AI Deep Learning Color Sorter

· Deep Learning Algorithm – A smart brain that automatically identifies goat dung

· Multi-Spectral Detection – Sharp eyes that see through black impurities

· Multi-Dimensional Feature Analysis – A More Comprehensive Observation, mastering shape and texture

· Ultra-Fast Sorting – A Millisecond response, guaranteeing both output and purity

 

 

Say goodbye to the embarrassment of "can't tell them apart when colors match." Ensure every single black melon seed product stands up to inspection!