Silicone Engraving

What is silicone engraving？

Silicone engraving is the process of making marks on the surface of silicone by using lasers or other engraving equipment. Silicone engraving is often used as a way to retain product information or to personalize silicone products.

Why is silicone suitable for carving?

Silicone engraving is not suitable for all engraving methods, but its physical and chemical properties are highly compatible with laser engraving technology. The main reasons why silicone can be compatible with laser engraving are as follows.

First, silicone has excellent thermal stability and high-temperature resistance. The local high temperature generated by laser engraving ablates the surface of the silicone, thereby leaving high-precision patterns. The high-temperature resistance of silicone determines that it will not melt or even have more severe deformation under the irradiation of the laser.

Secondly, silicone is a synthetic polymer with uniform composition. There are no volatile substances such as plasticizers inside it. Therefore, no harmful substances are released during the laser engraving process. The substances produced by engraving are mainly carbon dioxide and water vapor. There are some residual white powders on the surface of the silicone after engraving, and these powders can be easily cleaned up.

High absorption rate of lasers. Silicone has a high utilization rate of laser energy for commonly used industrial engraving. This also means that effective engraving can be achieved without extremely high laser power. Therefore, laser engraving has low energy consumption and fast processing speed.

Besides, silicone can also better adapt to mechanical engraving. Silicone has certain elasticity and tear resistance. Therefore, it is not easy to tear the silicone during the mechanical engraving process. Moreover, it can also carve deep grooves on the surface of silicone.

Silicone Engraving Methods

Laser Engraving

Laser engraving is a widely used engraving method. Laser engraving does not contact the material surface and generates a large amount of heat energy, it also belongs to non-contact machining and hot working. It can create complex and delicate pattern designs. It works by using a laser beam to irradiate the surface of silicone. The local temperature of the silicone material rose sharply, and the material vaporized and evaporated, forming permanent depressions or discolored marks. There are mainly two engraving modes in laser engraving: foaming and ablation.

The first step in using laser engraving is to design the pattern.Customize the pattern you need to use professional software to create the graphics, text, etc. It is essential to notice that the design pattern is correct. Afterwards, the manufacturer needs to import the designed files into the device and set parameters such as the power, speed and frequency of the software. Then precisely adjust the position of the silicone material. The engraving effect can be tested in a small range. After confirming that there are no errors, laser engraving can be carried out.

Silicone engraving can achieve very complex and fine patterns, including tiny characters, fine lines and QR codes, etc. At the same time, laser engraving does not contact the material, so it will not damage the material or cause it to deform. Therefore, laser engraving is very suitable for soft and volatile silicone products. What’s more, laser engraving can achieve automated production, has high production efficiency, and is very suitable for large-scale production. If you want to engrave a large number of silicone parts, laser engraving is an ideal choice.If you want to customize small batches of silicone products, you can also choose laser engraving. The laser engraving software can change the engraving content in real time to achieve personalized product customization.

 What’s more, the high efficiency and precision of laser engraving have made it widely used in the industrial field. Some brand silicone products are usually engraved with brand logos. These are usually achieved by laser engraving.This application can better show the brand logo of the product or serve as an excellent anti-counterfeiting measure.

Mechanical Engraving

Unlike laser engraving, mechanical engraving belongs to cold working and contact machining. It mainly uses a CNC system to drive a high-speed rotating tool or engraving needle to scratch the surface of the silicone material to form grooved marks.

Mechanical engraving needs to use 3D CAD software to create a 3D model of the custom pattern you need and the engraving path. Choosing a tool of the appropriate size is necessary based on the depth and width of the pattern you are customizing. Then the cutting tool or engraving needle needs to be installed on the spindle. The setting of parameters such as cutting depth and rotational speed in the CNC control system is the key to the failure or success of engraving. After starting the equipment, the cutting tool can perform precise cutting along the preset path.

The notable advantage of this carving lies in its ability to provide a sense of three-dimensionality and touch. As a contact processing mechanical engraving, it belongs to physical cutting and does not change the chemical properties of silicone. Moreover, it can not only engrave silicone but also directly engrave metal molds.Mechanical engraving is suitable for silicone products of various sizes and shapes, and has a very wide range of applications. It can also guarantee the consistency of the quality of the engraved products.

Generally speaking, mechanical engraving can directly engrave the textures and ICONS you need on the mold. The engraved metal can serve as the master mold for silicone products, enabling the production of silicone products with raised ICONS. It can also be used to customize molds for seals and more products with grooved marks.

How does silicone engraving work?

You can choose different engraving techniques to engrave silicone products. The following is the general process of silicone engraving.

Prepare the Design

If the product you customize requires laser engraving, it needs to be created and the design imported using vector graphics software. If mechanical engraving is used, it is necessary to create a two-dimensional or three-dimensional model with CAD software and define the engraving path. Then, auxiliary software is needed to convert the model into code. Set the size and position of the engraving in the software.

It should be noted that the model design must take into account the process issues. For instance, when designing models, it is necessary to avoid thin lines that cannot be carved. The character spacing should not be too close to prevent adjacent parts from sticking together due to laser heat. At the same time, it is necessary to make sure that the designed dimensions are exactly the same as the actual required dimensions.

Position and Secure the Silicone

Before preventing silicone workpieces, it is essential to guarantee that the engraving platform and the surface of the workpiece are free of dust, oil stains, etc. A clean surface can guarantee that the product is not contaminated.

For laser engraving, flat workpieces can be fixed with a magnetic platform. For small workpieces, special tools must be used to firmly fix them to prevent them from shifting during the engraving process.

Precise physical positioning is also required before engraving. It is necessary to guarantee that the engraving path precisely contacts the expected engraving position of the workpiece. This is an important step to verify the accuracy of the engraving position.

Set up and Test Silicone Engraving Machine

After fixing the material, it is necessary to debug the equipment. If your product uses a laser engraving machine, then engineers need to set parameters such as power, speed and frequency in the control software. It is necessary to adjust the height of the laser head to guarantee that the laser focus precisely lands on the material surface. If mechanical engraving is used, the spindle speed, cutting depth and other parameters need to be set in the CNC control panel. Good parameter settings are the key to determining the color, depth, edge quality and processing efficiency of the engraving.

After setting the parameters, it is necessary to test the equipment parameters. This is the most important quality control link to prevent the entire batch of workpieces from being scrapped due to improper parameters. Conduct the test in the waste area of the same material or in an inconspicuous small area. It should guarantee that the clarity, contrast and depth of the test subject all meet the requirements through small-scale engraving tests. If it does not meet the requirements, the equipment parameters need to be adjusted and tested again until the test results meet the requirements.

Start Engraving

After all the preparatory steps are completed, the automated production process can begin. Start the device and let it engrave along the preset path. Before carving, it is also necessary to make sure that the exhaust system is operating normally to prevent smoke and dust pollution.

After the engraving is completed, the surface of the workpiece needs to be wiped and cleaned to remove the powder produced by the engraving. If your product has color filling requirements, corresponding post-processing is also needed.

Applications of Silicone Engraving

Phone Cases

Customizing artistic patterns, brand logos on mobile phone cases can bring stunning designs to them. Personalized customization services will also endow your products with a unique personality. Besides, other fashionable cases such as keychains and other decorative items can also be custom-produced. These products are also great for gifting.

Watch Bands

If you want to customize a brand logo or decorative pattern on a smartwatch or the strap of this fitness band, you can choose the silicone engraving customization service. These complex and exquisite patterns or words can greatly improve the texture of the product and achieve personalized customization. And you don’t need to worry that it will fade and lose its effectiveness.

Silicone Cookware

Customized silicone engraving services are usually also used in baking molds or production. This kind of indication sign is heat-resistant, washable and can directly contact food. It is more environmentally friendly and safe to engrave silicone on kitchenware.

Information Tag

In addition to customized products, most of the silicone carving is used for engraving product number, batch number and other information. Whether for medical components or industrial components, this information can better assist in product management and subsequent maintenance. Silicone engraving gives the product with serial number information without changing its physical and chemical structure. It can well satisfy the high safety and hygiene requirements of medical devices.

Advantages

Durability

Silicone engraving patterns are characterized by durability. Carved patterns are formed by removing the surface of materials through physical or chemical methods.This is a change in the material structure, so it cannot be removed by daily scraping and friction.Just like the silicone, the engraved parts have excellent anti-aging properties and will not fade or become ineffective due to long-term use. Moreover, it can resist the erosion of some chemical solvents and will not become blurred after wiping.

High Precision

Laser engraving can achieve extremely high resolution and can engrave smiling characters and complex patterns. Some products are also engraved with QR codes or barcodes, and the edges of the engraved patterns are clear and sharp. By precisely controlling the process parameters, clear marks can be left on the products, meeting the requirements for marking or traceability of the products.

Non-contact Machining

This advantage is only applicable to laser engraving. Laser engraving does not contact the material. Therefore, laser engraving will not cause damage to the material surface and reduces the risk of material extrusion deformation. Therefore, laser engraving is extremely suitable for soft and irregular silicone parts.

High Efficiency and Automation

Engraving software can be integrated into an automated production line to achieve automated production. It can achieve continuous production, with fast processing speed and high production efficiency. Moreover, the equipment can be controlled by software, making it easy to switch from mass production to personalized customization.

Environmentally Friendly

Whether the product you customize uses laser engraving or mechanical engraving, neither of these engraving methods requires the addition of chemical substances. There is no waste liquid discharge during the carving process, which complies with the strict environmental protection regulations.

Disadvantages

Material Limitation

Silicone carving is mainly for silicone materials, and the carving of other materials requires different carving equipment and carving techniques. Besides, especially for laser engraving, the contrast of silicone engraving is more dependent on the color of the silicone material. Most of the marks engraved by laser are black, white or gray, making it difficult to achieve high-brightness engraved marks.

Initial Investment

Whether the products you customize use laser engraving or mechanical engraving, the initial purchase investment for these engraving devices is huge. In addition, the operating costs caused by equipment operation are all considerable expenses. Not to mention the regular replacement and maintenance costs.

Size Limitation

The size of the engraving area is usually determined by the model of the equipment.For large silicone parts, the equipment can not complete the processing at one time. Secondly, for laser engraving of three-dimensional shapes, the engraving effects at different positions may vary, and even some areas may become blurred. Therefore, a more expensive engraving system is needed. Although CNC can handle the engraving of three-dimensional curved surfaces. However, for soft and elastic silicone, dies may cause local deformation of the silicone. This will affect the consistency of the engraving depth.

Final Thoughts

Silicone engraving can satisfy your various engraving needs. If you also want to customize some silicone products, Legensilico can turn your ideas into what you get. With rich experience, Legensilico can make all your unique customized solutions come true. Contact us now.