V-COIL in use: thread reinforcement in the cosmetics industry
In fully automated production systems, every component counts. Especially when the system runs around the clock, requires regular maintenance and must meet high hygiene requirements at the same time. A practical case from the cosmetics industry shows how V-COIL thread inserts can help make threads in softer materials permanently more load-bearing.
The application involves the V-COIL Thread Repair Assortment VC80 (Art. No. 04080). It is used on machine parts of a production system made of phenolic resin. V-COIL thread inserts can be used not only to repair damaged threads, but also for thread reinforcement. The user produces toothpaste tubes in different sizes and according to individual customer requirements with a fully automated system. The system is located in a hermetically sealed room and runs in 24/7 operation.
The challenge is not only the high cycle rate of production. For hygiene reasons, all machine parts must have antibacterial properties. At the same time, certain components are regularly removed, serviced and reassembled. This is exactly where stresses occur that can quickly become critical for threads in softer materials and lead to wear.
Why are components made of phenolic resin used in this application?
In the production system, transport components made of phenolic resin are used to move the toothpaste tubes further along during the running process. The material helps prevent possible damage to the tubes during transport.
In addition, the phenolic resin components are coated with an antibacterial finish. This is important in this application because the system operates in a hygiene-sensitive production environment. The components therefore have to perform two tasks at the same time: They must transport the tubes gently and meet the hygiene requirements of production.
The disadvantage: The components have to be removed regularly for maintenance. This means that the existing threads are repeatedly loosened and screwed together again. These repeated assembly processes are exactly what lead to wear over time.
What happens to threads in phenolic resin during frequent assembly?
In this application, phenolic resin is a functional material, but it is significantly softer compared to metallic materials. If a thread in such a component is regularly stressed, unscrewed and screwed back in again, it can loosen, wear or become damaged over time.
In practice, the problem is simple: The component itself is often still usable, but the thread becomes the weak point. If the thread no longer holds reliably, the entire component has to be replaced or repaired at considerable effort. In 24/7 production, this means additional costs, more maintenance effort and, in the worst case, unnecessary downtime.
This is exactly where thread reinforcement comes in.
How do V-COIL thread inserts protect the thread in the component?
In this application, V-COIL thread inserts are installed in the phenolic resin components. The aim is not only to repair a damaged thread, but to make the thread in the component permanently more resistant.
This is referred to as thread reinforcement. The thread insert forms a load-bearing internal thread in the component. This relieves the original thread in the softer material. The screw connection can be loosened and reassembled more frequently without the phenolic resin thread being directly exposed to the full mechanical stress.
The thread reinforced with a V-COIL thread insert benefits from the properties of the stainless steel insert. Particularly important in this application: The thread becomes more resistant, can withstand more frequent use and also holds up significantly better under higher loads.
This is especially useful for components that have to be maintained regularly. Instead of repeatedly placing direct stress on the soft base material, the thread insert takes over the function of the more robust internal thread.
This practical case therefore shows very clearly that thread repair does not always begin only when a thread is already defective. In many applications, it makes sense to use thread inserts deliberately as a structural reinforcement, especially when components are regularly assembled, disassembled and screwed together again.
Why is the V-COIL Thread Repair Assortment VC80 the right solution here?
The V-COIL Thread Repair Assortment VC80 used here gives the user the option of using thread inserts directly in the affected components. In this case, the assortment is used to make the threads of the phenolic resin transport components more resistant.
The assortment contains all the necessary tools for the application: the matching core hole drill, the STI tap for the receiving thread of the thread insert, an adjustable tap wrench, thread inserts, installation tool, tang break-off tool, thread pitch gauge and a screwdriver for correctly adjusting the installation tool. The set covers sizes M5 to M12. The thread inserts are each included in three different lengths: 1.0 x D, 1.5 x D and 2.0 x D, based on the nominal diameter of the respective thread.
The application is carried out in four simple steps:
- Drill the core hole
- Cut the receiving thread
- Install the thread insert
- Break off the driving tang
For the user, the benefit is clear: The phenolic resin components can be used for longer because the threads are better protected against wear by the V-COIL insert. This reduces the need for replacement parts and helps keep the system reliably available during ongoing operation.
This is an important point especially in a fully automated production environment. There, it is not only the price of the individual component that matters, but also the availability of the system. Every component that functions reliably for longer contributes to a more stable production process.
What advantages does thread reinforcement provide in this application?
The application shows very concretely why thread inserts are not only interesting for classic repair cases. They can also be used preventively when a thread is exposed to higher loads from the outset.
In this case, the advantages mainly result from:
- longer service life of the phenolic resin components
- less wear during regular removal and installation
- better load-bearing capacity of the threaded connection
- reduced costs for replacement and consumable parts
- greater process reliability in a 24/7 production system
- retention of function despite hygiene-sensitive production conditions
The key point is: The entire component does not have to become more robust. It is enough to reinforce the critical point in a targeted way. And in this case, that critical point is the thread.
When is the use of V-COIL thread inserts particularly worthwhile?
V-COIL thread inserts are particularly worthwhile when threads in softer or heavily stressed materials have to function reliably over the long term. This applies, for example, to components made of plastics, composite materials or other materials where the internal thread can wear more quickly due to repeated assembly.
Thread reinforcement can also make economic sense for components that are regularly removed for maintenance. Because if the component itself is still intact but the thread fails, unnecessary replacement demand arises. A thread insert can help significantly extend the service life of the entire component here.
The application case from the cosmetics industry makes exactly this visible: The V-COIL thread inserts protect the thread, stabilize the connection and ensure that the phenolic resin components can be used for longer.
Conclusion: Small reinforcement, major effect
In the production of toothpaste tubes, high system availability, hygiene requirements and regular maintenance all come together. The transport components made of phenolic resin perform an important function, but are heavily stressed by frequent assembly processes.
With the V-COIL Thread Repair Assortment VC80, Art. No. 04080, the user can specifically protect the threads of these components. The thread inserts act as thread reinforcement and make the connection more durable. This allows components to be used for longer, replacement part costs to be reduced and maintenance processes to be made more reliable.
For applications with softer materials and regularly stressed threads, this is a clear advantage: Instead of accepting worn threads as an unavoidable problem, the critical point can be reinforced in a targeted way.
Do you have a similar application or thread problems in softer materials?
Then it is worth taking a closer look at V-COIL thread inserts.
FAQ: V-COIL thread inserts in phenolic resin and softer materials
Why are V-COIL thread inserts used in phenolic resin?
V-COIL thread inserts are used in phenolic resin to make the thread more resistant. Since phenolic resin is a softer material, the thread can wear during frequent assembly. The thread insert protects the connection and increases the service life of the component.
What does thread reinforcement mean?
Thread reinforcement means that a thread is specifically reinforced by a thread insert. The insert takes over the function of a more load-bearing internal thread and protects the softer base material from direct stress.
Is V-COIL only suitable for defective threads?
No. V-COIL thread inserts can be used not only to repair damaged threads, but also preventively to reinforce heavily stressed threads.
When does thread reinforcement make sense?
Thread reinforcement makes sense when components are regularly assembled and disassembled or when the thread is located in a softer material. Especially for maintenance components, the service life can be significantly extended.
