{"id":139,"date":"2025-04-25T15:55:38","date_gmt":"2025-04-25T06:55:38","guid":{"rendered":"https:\/\/www.pla-mirai.net\/twinscrew-extruder\/?p=139"},"modified":"2025-06-20T18:40:56","modified_gmt":"2025-06-20T09:40:56","slug":"resin-degradation","status":"publish","type":"post","link":"https:\/\/www.pla-mirai.net\/twinscrew-extruder\/en\/improvement\/resin-degradation.html","title":{"rendered":"Reduce Quality Complaints and Waste Costs with Resin Degradation Prevention"},"content":{"rendered":"

Resin degradation is the root cause of quality complaints. Since it is directly related to trust in the material and the company, a single claim can result in the loss of profits and customers.<\/p>\n

From the perspective of generating trust and profit by protecting materials, this article will summarize the causes of deterioration and management risks, and provide details on effective process management and the use of twin-screw extruders as improvement measures.<\/p>\n

Resin degradation is a hotbed of quality complaints<\/h2>\n

Even a single quality complaint for plastic products can cause tremendous losses to a company. The loss of customer trust and profits is immeasurable, and sometimes even market share can be affected.<\/p>\n

Especially defects that appear on the surface of plastic products,Invisible deterioration of the material itself<\/span>Therefore, it is necessary to take preventive measures to prevent deterioration from the raw material stage. This will greatly reduce product defect rates and improve yields.<\/p>\n

Factors and effects of resin degradation<\/h2>\n

Common Deterioration Mechanisms<\/h3>\n

One of the main mechanisms of resin degradation is the reheating ofMolecular Chain Rupture<\/span>It is. Heating, especially at high temperatures for long periods of time, causes the molecular chains to break up, resulting in a resin that is less strong and more brittle.<\/p>\n

AnotheWater content and oxidation of raw materials<\/span>The appearance and hygiene of the product can also be compromised by problems such as discoloration of the resin, odor, and bubbles, depending on the Other,Excessive heat shear<\/span>is another factor in resin degradation. Thermal degradation can cause problems such as gas generation and carbon deposits.<\/p>\n

Impact on Management Risk<\/h3>\n

What are the risks to business operations that can result from neglecting resin deterioration? The first risk is the cost of dealing with complaints, delays in delivery, and an increase in lost products. These negative effects on management are inevitable.<\/p>\n

Further,Risk of litigation or recall if serious<\/span>Once a customer trust relationship is lost, it is not easy to recover it, and the result can be a long-term loss of revenue. Once trust with customers is lost, it is not easy to regain it, and as a result, it may cause a long-term decline in profits, so early action is required.<\/p>\n

How to Prevent Resin Deterioration? Introducing a basic approach<\/h2>\n

Heating Management<\/h3>\n

To avoid unnecessary heat history,Optimization of temperature profiles and control of reheating<\/span>is essential. By optimizing the heating conditions, the destruction of the molecular structure can be prevented and the original performance of the resin can be maintained.<\/p>\n

Moisture and oxygen management<\/h3>\n

To prevent resin degradation, it is also important to control moisture and oxygen in raw materials.Pre-drying and nitrogen purging<\/span>Thoroughly enforcing the following measures prevents deterioration due to oxidation and hydrolysis, and prevents deterioration in the appearance and physical properties of the product.<\/p>\n

Utilization of stabilizers<\/h3>\n

Proper use of additives such as antioxidants, heat stabilizers, and UV absorbers protects the molecular structure of the resin and minimizes degradation.Selection of stabilizers according to application<\/span>is the point.<\/p>\n

process optimization<\/h3>\n

Prevents excessive shearing and retention and suppresses bubble generationKneading and devolatilization design<\/span>is required. Optimizing the entire process will enable consistent product quality and increased productivity.<\/p>\n

Deterioration control realized by twin-screw extruder<\/h2>\n

The twin-screw extruder has been attracting attention as a device that can optimize the process for resin degradation countermeasures. The devolatilization mechanism eliminates theEffective removal of volatile components<\/span>will be.<\/p>\n

AnotheDesigned to avoid overheating and overshearing<\/span>Another major advantage is that the molecular structure can be protected with<\/p>\n

In addition, anti-degradation agents and various stabilizers areUniform kneading<\/span>This directly leads to longer product life. Twin-screw extruders are indispensable in preventing product problems and ensuring stable quality.<\/p>\n

Introducing CTE's twin-screw extruder, which is highly effective in resin degradation<\/div>\n
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\n \"CTE<\/p>\n
Citation: CTE Official
\n https:\/\/cte-japan.com\/en\/product\/htm-twin-screw-extruder\/<\/div>\n<\/p><\/div>\n
HTM Twin-Screw Kneading Extruder<\/div>\n

The HTM twin-screw extruder has an intermeshing twin-screw structure with interdirectional rotation,High kneadability and excellent outgassing performance<\/span>The machine achieves the following. The high-speed rotor of the Banbury mixer type provides high shear to the resin, while repeated compression and release reduces heat generation, enabling low-temperature extrusion.<\/p>\n

It ensures uniform dispersion while preventing resin degradation and prevents the inclusion of air bubbles that can cause molding defects. This extruder is also suitable for processing high density filler and recycled materials, and has the ability to handle a wide range of materials.<\/p>\n<\/div>\n

See More at CTE.com<\/a><\/div>\n
\n
\n \"CTE<\/p>\n
Citation: CTE Official
\n https:\/\/cte-japan.com\/en\/product\/htm-tandem-compounding-twin-screw-extruder\/<\/div>\n<\/p><\/div>\n
HTM type tandem kneading extruder<\/div>\n

The HTM tandem extruder is based on the technology of the HTM twin-screw extruder and combines a twin-screw kneader and a large diameter single-screw extruder.High kneadability and outgassing performance<\/span>and in the single-axis extrusion sectionLow temperature, low speed<\/span>Extrusion is possible with<\/p>\n

It can process compounds with high filler concentration, recycled materials, and biodegradable resins in a stable manner while minimizing burnout and degradation. In addition, the segmentation of the screw allows for flexible handling of a wide variety of materials.<\/p>\n<\/div>\n

See More at CTE.com<\/a><\/div>\n

What CTE twin-screw extruders can achieve<\/h2>\n

CTE's twin-screw extruders are capable of meeting material and molding challenges that were difficult to meet with conventional equipment, thanks to our reliable technology.Sensitive materials such as recycled materials with thermal history and biodegradable resins<\/span>But it can be extruded without loss of physical properties.<\/p>\n

Further,Drying process can be omitted or shortened.<\/span>This will also contribute to increased productivity.<\/p>\n