Release Agent Knowledge Base: Applications, Defects & Soluti

How to Increase Release Cycles of Semi-Permanent Mold Release Agents for Carbon Fiber?

In carbon fiber composite manufacturing, **release cycles** are a key indicator for evaluating the performance of semi-permanent release agents. Whether in **hand lay-up, vacuum infusion, RTM molding, or prepreg processes**, the stability of the release agent directly affects mold efficiency, surface quality consistency, labor and material costs, production cycle time, and delivery schedules. If the release cycles are too low, it means frequent reapplication of the release agent is required. This not only increases cost but also introduces contamination, leading to defects such as **fish eyes, pinholes, and sticking issues**. This article explores how to effectively increase release cycles through **systematic optimization of material selection, application methods, and process control**.

Fish Eyes and Pinholes on Carbon Fiber Parts: Resin Problem or Release Agent Problem?

A systematic guide to diagnosing fish eyes and pinholes on carbon-fiber parts, determining whether the cause is resin, release agent, or process conditions, and applying practical A/B tests and optimization steps.

How to Fix Carbon Fiber Part Sticking: Troubleshooting Checklist from Mold Condition to Demolding Process

Carbon fiber composites are being used more widely in aerospace, automotive, sporting goods, and industrial equipment, but on the production floor the hardest question is often not whether a part can be made, but whether it can be demolded consistently. With the same mold, the same raw materials, and the same equipment, the first few cycles may release normally, only for later cycles to suddenly show sticking, drag marks, local fiber exposure, mold-surface damage, and even line stoppages for rework. Part sticking is often blamed on the release agent alone, but field experience shows that it is usually caused by multiple factors acting together, including mold condition, cleaning steps, release-agent application, curing windows, and demolding actions. In other words, the key is not to switch products blindly, but to build a repeatable troubleshooting logic: find the main cause first, verify changes in small steps, and then lock the parameters into standard practice. The checklist below follows the order of "mold first, process second, material third, and demolding action last." It is suitable for hand lay-up, vacuum infusion, RTM, and some compression-molding applications.

How to Increase Release Cycles of Semi-Permanent Release Agents

During customer communication—especially with composite manufacturers—a common question arises: **“How many release cycles can be achieved with one application of a semi-permanent release agent?”** In reality, the number of releases is not fixed. It depends on several key factors throughout the process. By optimizing these variables, manufacturers can significantly improve productivity and extend mold service life.

Application of Hexagonal Boron Nitride in High-Temperature Release Agents

Boron nitride was first developed over 100 years ago. Among its polymorphs, hexagonal boron nitride (h-BN) is widely used as a high-temperature lubricant. It exhibits excellent smoothness, with an extremely low friction coefficient between particles. Each atomic layer of h-BN consists of boron and nitrogen atoms, with no B–N bonds between layers. This allows the layers to slide easily over one another, resulting in superior lubricity and softness. These characteristics make h-BN highly suitable for high-temperature release agent applications.

How to Stabilize Exposed Concrete Finish: Coordinating Release Agent, Formwork, and Vibration

A practical guide to stabilizing exposed-concrete appearance by coordinating release-agent selection, formwork condition, and vibration control.

Concrete Release Agent Usage Calculation: How to Control Consumption and Unit Cost

A practical guide to calculate concrete release-agent usage with measurable production indicators and trial-based process control.

PU Foaming Technology：Principles & Applications

With the continuous advancement of materials engineering and industrial manufacturing, lightweight, high-performance, and functionally integrated materials have become key development trends across industries. Polyurethane materials, known for their high design flexibility and wide performance adjustability, show outstanding value in foaming applications. Polyurethane foaming technology enables weight reduction and energy efficiency while maintaining excellent mechanical properties, and plays a critical role in industries such as automotive, construction, electronics, and sports equipment. This article provides a systematic overview of the basic principles, production processes, and typical applications of polyurethane foaming technology in composite materials, helping readers better understand its technical characteristics and industrial prospects.

Four Major EVA Foaming Processes for Shoe Soles

EVA (Ethylene Vinyl Acetate) is widely used in footwear manufacturing due to its lightweight properties, excellent resilience, and good processability. With the continuous upgrading of footwear performance requirements and manufacturing technologies, EVA sole foaming processes have gradually become more diversified and mature. At present, the mainstream EVA foaming processes in the industry mainly include **traditional flat-sheet foaming, in-mold micro foaming, injection crosslinked foaming, and supercritical foaming**. Each process has its own characteristics in terms of foaming mechanism, product performance, and production cost, which directly affect the appearance quality of shoe soles and their suitability for subsequent processing. A thorough understanding of the characteristics and differences of these four EVA foaming processes is the foundation for achieving stable production and high-quality EVA shoe soles.

16 Types of Plastic Processing Techniques (Part 2)

In last week’s blog post, we introduced eight plastic processing techniques. In this article, we continue with another eight methods, and we hope you find them helpful and informative.

Industrial Release Agent Solutions & Insights