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Thursday, November 26, 2020 | History

2 edition of Welding of plastic films using infrared lamp and laser technologies found in the catalog.

Welding of plastic films using infrared lamp and laser technologies

R. Hardy

Welding of plastic films using infrared lamp and laser technologies

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  • 14 Currently reading

Published by TWI in Cambridge .
Written in English


Edition Notes

Includes bibliographical references.

Statementby R. Hardy and I. A. Jones.
Series671/1999
ContributionsJones, I. A., World Centre for Materials Joining Technology.
The Physical Object
PaginationVarious pagings :
ID Numbers
Open LibraryOL18114643M

  Laser machines typically use one of several laser technologies. CO 2 laser machines are versatile and affordable, costing significantly less than other laser systems. They utilize a gas laser in which CO 2 gas is excited by DC electrical energy, producing a beam of light in the far infrared region of the electromagnetic spectrum. Laser joining technology, applicable to a wide range of usages, including metal welding, soldering and plastic welding. Ultrasonic equipment for resin welding, resin melt cutting, resin cutting, metal joining and food cutting; High-frequency induction heater unit for non-contact heating of metal using electromagnetic induction. Currently, the two main types of laser welding for plastics are CO 2 and transmission laser welding. Plastics readily absorb CO 2 laser radiation, allowing quick joints to be made; however, the depth of the beam’s penetration is limited, which restricts the technique to film applications. Very rapid processing of thin plastic film is possible.


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Welding of plastic films using infrared lamp and laser technologies by R. Hardy Download PDF EPUB FB2

TWI Industrial Member Report Summary / R Hardy and I A Jones. The infrared (IR) lamp and laser welding characteristics of polyethylene (PE) and polyester terephthalate (PET) films have been shown to be dependent on the wavelength of the heat source, as well as supplied power, welding speed and clamping design.

This process uses Infrared radiation which is absorbed by the thermoplastic material and transformed into heat. As a result, the faying surface of the plastic part is melted, and the components are joined by pressing them together. This is a fast, non-contact, particulate free welding method.

The Globo welding process would replace two-part epoxy adhesive systems, which require cure-time delays, and vibration welding, which generates r laser welding supplier, LaserQuipment, is touting the joining of 3D parts with a hybrid laser process that combines the cost-effectiveness of conventional infrared welding systems.

IR welding is a welding technique that uses a non-contact heating method to melt and fuse thermoplastic parts together using the energy from infrared radiation. The process was first developed in the late s, but due to the high capital cost of IR equipment the process was not commonly applied in industry until prices dropped in the s.

In the first transmission laser welding process was demonstrated and patented by Toyota in Japan (Toyota, ) using carbon black additive to modify the absorption properties of the lower plastic. This was carried out using a near infrared Nd:YAG laser.

Transmission laser welding of plastics is now carried out using diode and fibre by: Hot gas welding, also known as hot air welding, is a plastic welding technique using heat.A specially designed heat gun, called a hot air welder, produces a jet of hot air that softens both the parts to be joined and a plastic filler rod, all of which must be of the same or a very similar plastic.(Welding PVC to acrylic is an exception to Welding of plastic films using infrared lamp and laser technologies book rule.).

Laser plastic welding, also often referred to as through-transmission welding, is a process of bonding plastic using focused laser radiation. The process is very much different than traditional metal welding.

The concept involves passing a focused laser beam through an upper, laser transmissive part to the interface of the two parts to be joined. Simultaneous Through-Transmission Infrared® (STTIr) laser welding is a process developed and patented by Branson.

Waveguides direct and distribute laser energy simultaneously and homogeneously along the weld line. When two component plastic parts need to be joined, laser welding employs four basic steps to accomplish the task.

'Perforating, welding and cutting plastic films with a continuous CO 2 laser'. PA State University,- Eng. Proc, pp, August 3: Jones I A and Taylor N S: 'High speed welding of plastics using lasers', ANTEC '94 conference proceedings, MaySan Francisco, USA. 4: Toyota Jidosha KK. Hybrid welding uses high-powered halogen lamp energy to assist the laser in the welding process.

The halogen lamps pre-heat the plastic around the joint line, in effect requiring less laser energy to melt the plastic. The benefits of pre-heating are faster cycle times as well as reduced part stress from temperature shock.

The halogen light is. Use of Infrared Absorbers to Laser Weld Plastics William H. Cawley, GENTEX Corporation, Carbondale, PAUSA Abstract The use of infrared lasers to weld plastics has become a commercially accepted method of joining plastics over the past few years.

This paper will discuss the basic principles of laser welding of thermoplastics. Laser welding of plastics was first reported in the early s (Silvers and Wachtell, ), when film materials were welded using a CO 2 laser. This was a ‘direct’ laser welding process, where the laser heated the films directly without the laser being transmitted through the upper part of the joint.

A laser joining technology for direct-bonding a metal and a plastic, named laser-assisted metal and plastic (LAMP) joining, has been developed to overcome the above drawbacks. LAMP joining is performed by melting the plastic near the joint interface and then forming small bubbles in the melted plastic by utilizing a simple lap joint, as shown.

During infrared welding, both part halves are held rigidly in position near an infrared emitting platen. The platen then emits powerful infrared light into both parts along the determined joint path, usually a circle or line. The platen is quickly removed, and the part halves are immediately driven together and allowed to re-solidify under pressure.

Using grit sandpaper, sand off the top part of the welding bead, then work your way up to grit wet sandpaper to get a clean fin­ish. When working with polypropylene or polyethylene, it is possible to regain their glossy surface by lightly heating the surface with a.

Different kinds of laser were used in welding thermoplastic. CO 2 laser is commonly applied in welding plastic film for its poor penetration depth and good absorption in thermoplastic at μm. Laser welding for plastic film. In the world of packaging, laser welding is most used on laminated thermoplastics.

The laser of choice for this technique is the CO2 laser. Direct welding is the type of welding that works best with thin materials. The growth of laser welding of plastics. Laser welding of plastics has transitioned from laboratory studies to real applications relatively quickly as manufacturers became familiar with the technical advantages of a laser welding technology that provides advanced capabilities to produce superior weld joints in many applications.

Infrared welding is a non-contact thermal welding technique capable of producing very strong, air-tight welds in thermoplastic parts. Infrared radiation is most commonly felt in the form of the heat we feel from sunlight.

As with any form of light, infrared radiation is electromagnetic radiation which is transmitted at very high power levels at. In the vast majority of cases, P-Wave welding is most effective with the use of a wavelength transducer, Long says.

The transducer is a plastic film, ribbon, or die-cut device made of IR-absorptive materials and positioned above or below the parts being joined (Fig. Welding of white and transparent thin films of polypropylene and polyethylene of low and high density at high speeds of 20 m s−1 using a CO2 laser.

Basic Laser Welding Process. Laser plastic welding is a method of bonding two or more thermoplastic components together. Although there are many methods for joining thermoplastics, laser plastic welding has a few clear advantages: higher joining quality, minimal resulting flash or particulates, higher quality controls, less stress to.

Infrared Welding Process Advantages. Forward Technology is a world class manufacturer that designs and builds one of the widest available arrays of standard and customized Plastic Assembly and Testing systems specially suited to thermoplastic parts.

Branson Ultrasonics Corp. has teamed with Sono-Tek Corp. to use Clearweld additive technology from Gentex Corp. to create Simultaneous Through-Transmission Infrared (STTIr) laser welding. Welding of Infrared Transmissive Thermoplastic Polymers using Diode Laser Systems Scott Hartley and Nicole Woosman Gentex Corporation, Main Street Carbondale, PA USA Abstract Clearweld™ technology is a tool, which is readily employed for transmission laser welding of thermoplastic polymers using near infrared diode lasers.

TTlr Welding Process Advantages Branson Contour Laser assembly systems use a process called Through Transmission Infrared welding (TTIr). The process passes laser radiation through one plastic. Basic specifications of MLA are shown in Table 2. Figure 4 shows an example application of resin laser welding.

As seen, laser-transmitting resin which is opaque in visible light region and transparent in near infrared region has been developed. Though scanning speed of beam in laser welding depends on material, it ranges 10 mm/s to mm/s.

Infrared Welding. Infrared Welding is the process of joining plastic components with the use of electric quartz glass infrared emitters. It is a complex assembly method that requires a delicate balance of machine capabilities such as accurately regulated parameters.

3-D contour radiators, panel radiators or pin-base lamps that emit light of a short wavelength (λ = µm) are used. Infrared welding with metal foil radiator Metal foils embedded in ceramics, which can also feature a 3-D contour and that emit light of a medium wavelength (λ = µm) are used.

Laser welding of plastic parts has established itself as a robust, flexible and precise joining process. It enables highly efficient and flexible assembly from a small-scale production of parts with complex geometries to a high volume industrial manufacturing, where it.

Laser cutting is done through the use of a beam of infrared light. Although laser light beams can’t be seen by the human eye, they are a powerful tool that can be used with a high level of precision.

Here’s how laser cutting works for metals: We direct the laser beam as needed with a curved lens. Together, we have the most comprehensive technology and support portfolio as well as in-depth application knowledge to enable our customers in a diversified set of core markets.

Our industrial lasers and laser systems cover a broad spectrum of technologies, wavelengths, and output power. Welding of light-coloured or transparent polymers, which is particularly required in the medical device industry, is successfully achieved with CO 2 laser in the case of welding thin films or more general by using the above mentioned laser absorbing high performance additives.

Those have to exhibit high absorption efficiency. Plastic welding processes enable media-tight joints combined with low production costs and short cycle times.

One of these processes is laser trans­mission welding. Here, a laser-transparent part and a laser-absorbing part are in contact with one another while a laser beam passes through the trans­parent part with a low energy loss.

Laser plastic welding is a proven, powerful, and effective way to join plastics. It’s been used in industry for over 20 years and its ability to weld a wide variety of part sizes, with precision weld joints, minimal flash, and no particulate is unmatched by other welding processes.

“The book forms a comprehensive overview of the fundamentals of the technology and is well tailored to the needs of everyone dealing with laser welding of plastics, in particular engineers in packaging, component manufacturing and in medical technology.” (Laser & Photonik, 1 May ).

This application insight explores the different types of plastic welding including; transmission, Contour, Simultaneous, Quasi-simultaneous, Globo, and Radial Welding. Introduction. How Laser welding of plastic works (IR wavelength): In this process, the two layers, to be joined, must differ in such a way that the top one allows the infrared.

Transparent welding can be done using any of these techniques, even though it employs a 2-micron laser. The ideal wavelength is 1, nanometers. “Being able to weld two clear parts has always been considered the holy grail of laser welding,” notes Andrew Geiger, manager of laser plastic welding at Leister.

infrared welding lamp products are offered for sale by suppliers on A wide variety of infrared welding lamp options are available to you, such as 1-year.

You can also choose from glass infrared welding lamp There are suppliers who sells infrared welding lamp onmainly located in Asia. Diode lasers in plastic welding and selective laser soldering: applications and products Steffen Reinl JOINING Figure 1: Temperature control of the solder process.

The blue line shows solder joint temperature using pyrometer control of laser power during the soldering process. the red line shows temperature fluctuations without temperature control.

Laser welding is a rapidly developing and versatile technology which has found increasing applications in industry and manufacturing. It allows the precision welding of small and hard-to-reach areas, and is - Selection from Handbook of Laser Welding Technologies [Book].Request a custom report on Laser Plastic Welding Market.

Analysts’ Viewpoint. The global laser plastic welding market is expected to grow at an impressive CAGR of % during the forecast period. The market growth is driven by a host of factors, including soaring demand from end-use industries, progress in laser technology, dwindling prices.Welding of thermoplastics using near-IR lasers has been seen in wide industrial application.

Most of thermoplastics are transparent to near-IR laser. Particular characteristic of near-IR laser radiation has the ability to heat the interface between the transparent part and absorbent one colored with pigments.