You will surely find a suitable laser for your product making. The surface of a target is scorched, oxidised, or discoloured by the laser light. Laser engraving plastic demands both scientific and creative approach. Laser marking is fundamentally different from ink printing, the traditional method of marking on plastics. Topics: Based on the nature of the plastic, its functional purpose and its intended use the requirements for its marking are varying. Looking for a laser marking machine? All Rights Reserved. Laser marking plastic Lasers mark plastic components not only permanently and flexibly, but also very environmentally and material friendly. Irradiate a plastic target with a laser to develop a colour in the target itself. The surface of the target itself is coloured, resulting in high-contrast areas. Even small characters can be easily identified, ensuring reliable quality control. Selecting the best marking method ensures damage-free marking regardless of the target material. Laser Marking for Plastic. along with other resins for marking with variety of different lasers like 1064 nm Nd:YAG-Laser, fiber laser and solid state lasers. The types of laser used and some practical examples of laser processing. Nylon is great for laser cutting and in the case of fabrics, the cut edges do not fray after they are heat sealed with the laser. By using Ytterbium Fiber Laser (1062 nm) technology, the laser quickly creates a permanent mark on your plastic part by reacting with the chemicals in the plastic to create a colored mark on the plastic, whether it is black, white, orange, or many other colors of plastic. Pin holes can appear as a result of overheating when marking under high power. “What exactly is a laser?” “What are the principles behind lasers?” Whether you’re interested in basic knowledge questions like these or more in-depth information such as oscillator structures, these technical references provide the answers in an easy-to-understand way. “What exactly is a laser?” “What are the principles behind lasers?” Whether you’re interested in basic knowledge questions like these or more in-depth information such as oscillator structures, these technical references provide the answers in an easy-to-understand way. Laser engraving has replaced conventional two-part injection molding and rotary engraving as the preferred method for rapid production of custom day-and-night marks because of its speed, operational flexibility, and mark quality. The markings produced in laser marking operations contrast with the material surface, making them easy for both humans and machines to read. In this section, you will find applications in a wide variety of industries as well as detailed examples showing the advantages in using laser markers. Laser Engraving Enables Cost-Effective Day-and-Night Markings on Plastic Parts. along with other resins for marking with variety of different lasers like 1064 nm Nd:YAG-Laser, fiber laser and solid state lasers. In the case of plastics, the process is characterized by a fast marking speed and low cycle times. PVC, ABS, and polystyrene, both fundamental and green lasers show low transmission ratio and high absorption ratio, which ensures good marking. This section describes information ranging from the principles of plastic marking and processing to advantages grouped by laser wavelength. The available types of lasers—such as CO2 lasers, YVO4 lasers, and YAG lasers—depends on the target material and the desired marking method. Laser marking is a non-contact optical process in which the plastic has to absorb the laser beam. This is a must-read if you want to check the laser lineup first! It introduces marking examples and the optimal laser markers for a variety of materials such as ABS, epoxy, and PET. This method provides contrast against the base material colour by peeling the paint, printed surface, or plating layers of a target for marking. This site is managed by KEYENCE CORP. The laser works with a maximum pulse rate, but low energy per pulse. Color laser engraving can essentially be broken down into two subsets, that of color laser engraving on metal and color laser marking on plastic. The graph below shows the transmission ratio of a fundamental laser (1064 nm), a green laser (532 nm), and a UV laser (355 nm) for various plastic materials. Laser markers use laser light irradiated to a specific point, making high-accuracy marking possible. Conventional scanning methods only allow control from the X and Y axes, meaning the light could only be scanned on a flat surface. Damage-free marking is the best method for marking targets where damage to the product surface or the inside due to laser energy is a concern. Gasified, evaporated bubbles are contained in the surface layer of the base material and create a whitish swelling. Laser markings on plastic surfaces are always smudge and abrasion resistant. These bubbles are particularly visible with darker base materials and result in “thin” colouration. With labeling and printing methods, labels or printed surfaces may peel off or fade, making it impossible to identify the printed content. The laser marking process accommodates a variety of materials, ranging from metal and plastic to leather, glass, wood, and more. Copyright (C) 2021 KEYENCE CORPORATION. Laser markers can be roughly divided into two types: masking laser markers and scanning laser markers. In most cases pressing too much when marking can be counterproductive and can decrease the final contrast, so it is better to start with 1 repetition and gradually increase them. The “pigment” elements in the base material always contain metallic ions. These scanning mirrors are called galvano mirrors, and a system that uses one or more of these mirrors is called a “galvano scanner” or “galvano mirror scanning system”. Plastic Processing Plastic marking The optimal laser marker for this task is a hybrid laser marker that has a high peak power within the fundemental wavelength. All Rights Reserved. Peel the paint or printing on the target surface to bring out the contrast with the colour of the base material. Laser Marking Basics is designed to learn about laser marking applications and includes information on laser principles, types, and marking. The surface of a target is removed, marked, or engraved in some way. The types of laser used and some practical examples of laser processing. The molecules are condensed and the colour changes to a darker colour. This page shows some applications and information of laser processing. The highly visible, print-like finishing does not disappear like ink. The CO 2 laser is more often used for etching or engraving on the plastic. This section introduces the principles, characteristics, and advantages of laser marking—a type of laser processing—as well as typical processing examples. Lasers can be used for a variety of marking methods including surface melting and scorching, plating and paint peeling, oxidisation, and discolouration. The laser choice will depend on the application requirements. Marking provides a print-like finishing on designs and other surfaces that cannot be erased. When an area continuously receives high energy, macromolecules of the element around the base material are carbonised and turn black. No material is removed, but some foaming is possible. Plastic laser marking. This is due to the fact that - compared to conventional marking procedures - no templates or consumables such as ink are required. When the base material is irradiated with a laser, gas bubbles are generated inside the material due to the thermal effect of the radiation. The “pigment” elements in the base material always contain metallic ions. Laser marking on plastic can be obtained with either a CO 2 or a fiber laser source. Markings are white and clear, making for an ideal replacement for stamps, labels, and printing. Our laser marking additives can be used in polyolefins like PP, HDPE, PS, ABS, PC, TPU, PET, PBT, Nylon, PVC and TPE etc. This behaviour is also used in the laser welding of plastics, during which one welding partner absorbs the laser beam and the other welding partner is transparent for the laser beam. Different material types behave differently while progressing with laser marking plastic, and there are lots of them: polypropylene, polyethylene, polyamide, acrylic, nylon… Consequently, the composition of the element itself changes chemically, resulting in colour development due to the increased intensity of the pigment. Total Solutions for High Contrast Laser Marking of Plastic. When the base material absorbs the laser energy, the thermal effect increases the molecular density. The most common processes of laser marking on plastic are carbonization, color change, foaming and engraving. When an area continuously receives high energy, macromolecules of the element around the base material are carbonised and turn black. In this section, you will find applications in a wide variety of industries as well as detailed examples showing the advantages in using laser markers. Should a plastic’s properties dictate that it cannot be laser … The absorption ratio varies greatly depending on the wavelength. Laser-based colouration can be divided into four main principles. Color Laser Marking on Plastics As of this writing, color laser markings for plastics is still limited, but recently developed techniques may … Gasified, evaporated bubbles are contained in the surface layer of the base material and create a whitish swelling. This has resulted in an increase in scanning systems that allow for a higher degree of freedom. Direct ink printing puts an image on the surface of the plastic which can be removed by abrasion or solvents, but Laser marking can provide an indelible high-contrast mark in the material itself, with no direct contact with the plastic other than through the incident Laser beam. By using laser radiation to develop a color instead of engraving the plastic, damage from marking the target is minimized. This section describes information ranging from the principles of plastic marking and processing to advantages grouped by laser wavelength. Many plastics and thermoplastics can be laser marked. White paper "Plastic laser marking" Based on the properties of a plastic, its functional purpose and its intended use the requirements for marking it are varying. Irradiate a plastic target with a laser to develop a color in the target itself. Laser Marking is a permanent marking process where discoloration occurred at the surface when a low powered laser beam reacts with the surface of a material, by changing the material properties.. Laser Cut Nylon Services Nylon is a man-made synthetic fiber that is known for its elasticity and strength. Marking is split into two main categories: "contact marking" and "non-contact marking”. Use the heat of laser radiation to weld and join plastic parts. Today’s laser markers, however, can control the Z-axis height using a scanning mirror, making it possible to mark a wide variety of targets with various shapes. Generally, the fiber laser generates a white mark on any plastic base color. The laser radiation changes the crystal structure of the ions and the hydration level in the crystal. Should a plastic’s properties mean that it cannot be laser marked, it can usually … Laser Marking for Other Materials (Glass / Paper / Ceramics / Other), Laser Marking for 2D Codes (Data matrix / QR Code / Barcode), Process Improvements from Mould Machining. Degree of depth is the primary distinguishing factor. With laser marking, however, there is no need to worry that marked content will disappear over time. Laser marking is one of the fastest marking processes available in the market. Laser Marking Plastics? The contact-free method can also be used to mark hard-to-reach and curved surfaces of the part. Foaming works on all polymers, but also on some metals. Laser marking is a type of non-contact marking. Many plastics and thermoplastics can be laser marked. This is a must-read if you want to check the laser lineup first! Laser light is applied to a mask surface, and only those parts that pass through the mask are marked. Peel the paint or printing on the target surface to bring out the contrast with the colour of the base material. This section introduces marking techniques and laser selection according to the material. This makes laser marking the preferred option for marks that need to remain legible even after several years, such as part numbers and serial numbers. A great diversity of plastics are being deployed especially in the automotive or medical industry. The laser radiation changes the crystal structure of the ions and the hydration level in the crystal. Irradiation from the laser light results in a highly visible white colour on the surface of the plastic. 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