Butt Welding of Transparent Polyamide (PA11) with 1.94um Fiber Laser

Petri Laakso, Saara Ruotsalainen, Otto Gerhard, Alexander Olowinski, Veli Kujanpää

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientific

Abstract

Laser welding of polymeric products has been manufactured for more than 20 years. During that time polymer welding has developed a lot. In spite of that, there are still some limitations in applying the process to the industry. Typically welding has been made in lap joint configuration with black and clear parts because of optical properties of polymers. When using ~1?m lasers, the absorbing and transparent partners are needed. Previously visually transparent materials have been welded in lap joint configuration using infrared absorbers with ~1?m lasers. Recently new fiber lasers have introduced wavelengths which can have interesting optical properties for polymers. For example, 1.94?m laser has volume absorption through the whole material thickness on selected polyamide 11 (PA11) polymer material. This makes it possible to use butt joint for welding of polymeric components. When butt joint can be introduced, it will enable more possibilities in using polymer welding in the industry. A joint between two clear components without any additional absorbers can also be introduced with these new wavelengths and it will also decrease the costs and enable new applications when no infrared absorbing additives are needed or accepted. This paper presents results of butt welding of transparent PA11 using TWIST method with 1.94?m fiber laser. Weld quality is evaluated visually and by comparing weld tensile strength to base material tensile strength.
Original languageEnglish
Title of host publicationCongress proceedings
Subtitle of host publicationICALEO, 32nd International Congress on Applications of Lasers & Electro-Optics
PublisherLaser Institute of America
Pages175-180
ISBN (Print)978-0-912035-98-7
Publication statusPublished - 2013
MoE publication typeB3 Non-refereed article in conference proceedings
Event32nd International Congress on Applications of Lasers & Electro-Optics, ICALEO - Miami, United States
Duration: 6 Oct 201310 Oct 2013
Conference number: 32

Conference

Conference32nd International Congress on Applications of Lasers & Electro-Optics, ICALEO
CountryUnited States
CityMiami
Period6/10/1310/10/13

Fingerprint

Butt welding
Fiber lasers
Polyamides
Welding
Polymers
Lasers
Welds
Tensile strength
Optical properties
Infrared radiation
Wavelength
Laser beam welding
Industry
Costs

Cite this

Laakso, P., Ruotsalainen, S., Gerhard, O., Olowinski, A., & Kujanpää, V. (2013). Butt Welding of Transparent Polyamide (PA11) with 1.94um Fiber Laser. In Congress proceedings: ICALEO, 32nd International Congress on Applications of Lasers & Electro-Optics (pp. 175-180). Laser Institute of America.
Laakso, Petri ; Ruotsalainen, Saara ; Gerhard, Otto ; Olowinski, Alexander ; Kujanpää, Veli. / Butt Welding of Transparent Polyamide (PA11) with 1.94um Fiber Laser. Congress proceedings: ICALEO, 32nd International Congress on Applications of Lasers & Electro-Optics. Laser Institute of America, 2013. pp. 175-180
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abstract = "Laser welding of polymeric products has been manufactured for more than 20 years. During that time polymer welding has developed a lot. In spite of that, there are still some limitations in applying the process to the industry. Typically welding has been made in lap joint configuration with black and clear parts because of optical properties of polymers. When using ~1?m lasers, the absorbing and transparent partners are needed. Previously visually transparent materials have been welded in lap joint configuration using infrared absorbers with ~1?m lasers. Recently new fiber lasers have introduced wavelengths which can have interesting optical properties for polymers. For example, 1.94?m laser has volume absorption through the whole material thickness on selected polyamide 11 (PA11) polymer material. This makes it possible to use butt joint for welding of polymeric components. When butt joint can be introduced, it will enable more possibilities in using polymer welding in the industry. A joint between two clear components without any additional absorbers can also be introduced with these new wavelengths and it will also decrease the costs and enable new applications when no infrared absorbing additives are needed or accepted. This paper presents results of butt welding of transparent PA11 using TWIST method with 1.94?m fiber laser. Weld quality is evaluated visually and by comparing weld tensile strength to base material tensile strength.",
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Laakso, P, Ruotsalainen, S, Gerhard, O, Olowinski, A & Kujanpää, V 2013, Butt Welding of Transparent Polyamide (PA11) with 1.94um Fiber Laser. in Congress proceedings: ICALEO, 32nd International Congress on Applications of Lasers & Electro-Optics. Laser Institute of America, pp. 175-180, 32nd International Congress on Applications of Lasers & Electro-Optics, ICALEO, Miami, United States, 6/10/13.

Butt Welding of Transparent Polyamide (PA11) with 1.94um Fiber Laser. / Laakso, Petri; Ruotsalainen, Saara; Gerhard, Otto; Olowinski, Alexander; Kujanpää, Veli.

Congress proceedings: ICALEO, 32nd International Congress on Applications of Lasers & Electro-Optics. Laser Institute of America, 2013. p. 175-180.

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientific

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AU - Laakso, Petri

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AU - Gerhard, Otto

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AU - Kujanpää, Veli

N1 - Project code: 27712

PY - 2013

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N2 - Laser welding of polymeric products has been manufactured for more than 20 years. During that time polymer welding has developed a lot. In spite of that, there are still some limitations in applying the process to the industry. Typically welding has been made in lap joint configuration with black and clear parts because of optical properties of polymers. When using ~1?m lasers, the absorbing and transparent partners are needed. Previously visually transparent materials have been welded in lap joint configuration using infrared absorbers with ~1?m lasers. Recently new fiber lasers have introduced wavelengths which can have interesting optical properties for polymers. For example, 1.94?m laser has volume absorption through the whole material thickness on selected polyamide 11 (PA11) polymer material. This makes it possible to use butt joint for welding of polymeric components. When butt joint can be introduced, it will enable more possibilities in using polymer welding in the industry. A joint between two clear components without any additional absorbers can also be introduced with these new wavelengths and it will also decrease the costs and enable new applications when no infrared absorbing additives are needed or accepted. This paper presents results of butt welding of transparent PA11 using TWIST method with 1.94?m fiber laser. Weld quality is evaluated visually and by comparing weld tensile strength to base material tensile strength.

AB - Laser welding of polymeric products has been manufactured for more than 20 years. During that time polymer welding has developed a lot. In spite of that, there are still some limitations in applying the process to the industry. Typically welding has been made in lap joint configuration with black and clear parts because of optical properties of polymers. When using ~1?m lasers, the absorbing and transparent partners are needed. Previously visually transparent materials have been welded in lap joint configuration using infrared absorbers with ~1?m lasers. Recently new fiber lasers have introduced wavelengths which can have interesting optical properties for polymers. For example, 1.94?m laser has volume absorption through the whole material thickness on selected polyamide 11 (PA11) polymer material. This makes it possible to use butt joint for welding of polymeric components. When butt joint can be introduced, it will enable more possibilities in using polymer welding in the industry. A joint between two clear components without any additional absorbers can also be introduced with these new wavelengths and it will also decrease the costs and enable new applications when no infrared absorbing additives are needed or accepted. This paper presents results of butt welding of transparent PA11 using TWIST method with 1.94?m fiber laser. Weld quality is evaluated visually and by comparing weld tensile strength to base material tensile strength.

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Laakso P, Ruotsalainen S, Gerhard O, Olowinski A, Kujanpää V. Butt Welding of Transparent Polyamide (PA11) with 1.94um Fiber Laser. In Congress proceedings: ICALEO, 32nd International Congress on Applications of Lasers & Electro-Optics. Laser Institute of America. 2013. p. 175-180