White Papers

  • Boosting Efficiency with Laser Plastic Welding

    Cover Image

    Lasers have gained an excellent reputation for joining plastic components together. They create very efficient joints and boast qualitative as well as economic benefits. Please see the article on the current state-of-the-art, or science, for laser plastic welding below.

    Process Comparison

    Competition Image

    Laser Plastic Welding v. the Competition Laser plastic welding is well suited to work with most any plastic joining need. However, each joining method has its own set of advantages and disadvantages. This paper will walk you through the pros and cons of each method, to help you determine which…

    Is Laser Plastic Welding Economical?

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    Laser plastic welding is becoming well known for its ability to join complex and detailed parts. In fact, the technology is driving innovation for products that were once not possible in the medical, automotive and consumer electronics industries. However, there still exists a stigma that laser technology cannot compete economically…

    Quality Control – Laser Plastic Welding, Impossibly Consistent

    Quality control is a main factor in the development and manufacture of any new product. From pre-production testing to in-line process monitoring, control mechanisms often drive much of the process of bringing a product from concept to production.

    Black-to-Black Laser Transmission Welding

    Laser plastic welding, also known as through transmission welding, is quite simple in its essence (see Basic Process Video). Laser radiation is shot through an upper transmissive plastic part and the energy is absorbed by the lower layer, creating heat at the interface and melting both parts. However, the process does not…

    Competing Processes – Adhesive Bonding versus Laser Welding

    Laser Welding versus Adhesive Bonding

    The increasing adoption of laser welding is due in no small part to the many technical advantages it offers. With regard to the economic advantages, prejudices still exist on account of higher investment costs for suitable materials. Any comparison with other processes must consider all aspects.

    Quality Assurance for Laser Polymer Welding Processe

    Melt Collapse Graph

    Quasi-simultaneous Laser Welding Transmission laser welding of polymers is a well-established industrial joining method, its reliability makes it particularly suitable for applications where very high weld seam quality is specified. A number of quality assurance methods are available when using this technology to safeguard the specifications demand for quality. These quality…

  • Form v. Function

    Laser plastic welding automotive tail lamp

    Why Not Both? Car headlights and tail lamps have traditionally been glued or hot plate welded.  However, with greater emphasis on break and head lamps, these methods are becoming outdated. Adhesive bonding, although capable of providing a clean look, leaves weak seals that eventually degrade and result in condensation. And, although,…

    Welding of Sensor Housing

    Small automotive sensor housings are the bread-and-butter application for laser plastic welding to date. Hermetically sealed, durable and clean joints prove laser welding is the right solution for the auto electronics industry.

    Competing Processes – Adhesive Bonding versus Laser Welding

    Laser Welding versus Adhesive Bonding

    The increasing adoption of laser welding is due in no small part to the many technical advantages it offers. With regard to the economic advantages, prejudices still exist on account of higher investment costs for suitable materials. Any comparison with other processes must consider all aspects.

  • Facilitating Innovation

    It’s simple really. Medical devices are getting smaller. Well, maybe more accurately put, the demand for smaller medical devices is becoming larger. Trends such as minimally invasive surgery and the rise of microfluidic devices, coupled with the advent of manufacturing technologies that allow for production of such ultra-precise designs, are…

    Balloon Dilation Catheters

    Laser Plastic Welded Catheter

    Balloon dilation catheters used to expand the coronary vessels must not only be leak-proof but are also subject to tight tolerances. A CO2 laser integrated into a welding system ensures the requirements are implemented in series production, while making for a robust process that offers short cycle times.

  • Laser Plastic Welding Overview Brochure

    Cover of Laser Plastic Welding Brochure

    The latest evolution in joining technology. This brochure will provide a snapshot of laser plastic welding, the capabilities, some application examples and LPKF competencies within the field. Read it Now

    Inline Systems for Automation Integration

    Laser plastic welding is well suited for high-volume applications that require full automation. There are multiple solutions available for many different types of automated projects. This brochure will give you a clear overview of those systems.


    LQ Integration by LPKF Image

    The LQ-Integration is a versatile system designed to integrate seamlessly with any automation/production line. The welding head is separated from the main control cabinet. The system comes with all of the benefits and capabilities of a stand-alone laser plastic welding system such as process monitoring controls, versatile software and state-of-the-art clamping technology.

    LQ TwinWeld 3D

    TwinWeld3D Close-up on Tail Lamp Welding Image

    With a robotic arm guided laser source, this system is designed for large parts and complex shapes. Did someone say car tail lights? The hybrid technology integrated into this systems sets it apart from the mix of other laser welders. Hybrid technology takes advantage of halogen lamps to provide polychromatic heating to…

    LQ-Vario MF

    Microfluidic Device Close Up Image

    The LQ-Vario MF is a specialized version of the standard LQ-Vario system. The MF version is specially designed to weld microfluidic devices. Microfluidic devices require extremely precise and accurate welding. The MF series Vario is outfitted with a special fiber laser that is capable of producing beam spot sizes as small as 0.07mm in diameter,…

    Quality Monitoring

    Laser Plastic Welding Reflection Diagnosis DIgram

    Quality starts with a safe and reliable welding process, and continues with proper testing. The LPKF LQ systems boast integrated process monitoring including regulation mechanisms which correct even the smallest deviations.This brochure highlights the process monitoring capabilities of laser welding systems.

    TMG2 Handheld Transmission Testing System

    Laser Transmission Measuring Device Image

    The LQ-TMG2 is a handheld unit design for testing the transmission rates of plastics. Excellent for material selection, quality control and testing; the TMG2 is becoming an industry standard for ensuring proper material transmission. Read it Now  

    LQ-Spot Laser Staking System

    Laser Heat Staking Diagram

    The LQ-Spot is a hot riveting system designed for mounting circuit boards into plastic housings. A project typical done with imprecise welding systems, glue or screws; there was a lot of room for improvement. The LQ-Spot provides perfectly reliable mounting with no chance of damaging the circuit board. The precise control over…

  • Design Guidelines: Hybrid Laser Welding of Automotive Lighting

    This design guide is an elaboration on the original LPKF Design Guidelines for Laser Plastic Welding. You will find this document has a specific focus on automotive exterior lighting. All of the considerations have been adapted to this topic and other details have been added. The purpose of this Automotive…

    Clamp Tools and Fixturing in Laser Plastic Welding

    Solid knowledge and execution of clamping and fixturing can have a profound effect on the laser welding process. To ensure quality welds during laser plastic welding, intimate contact between the two parts is paramount. Close contact will allow for adequate heat to be transferred, through heat conduction, from the absorbing…

    Material Compatibility Chart

    Material Compatibility Chart for Laser Plastic Welding

    This chart displays the most common, weldable thermoplastics. Each sample of this study was done with the plastic materials in their natural state. Please take note of the color system which indicates weld quality. For more information on plastics a compatibility please see the Laser Plastic Welding Design Guidelines document or the Design…

    New Design Guidelines Version 4.0

    This very popular document has just been updated to version 4.0, and is now available. The Laser Plastic Welding Design Guidelines is a powerful document for engineers designing applications for laser plastic welding. This improved document covers the main factors affecting a quality weld, material considerations, process types, and much more.


// Zoho