Laser welding is a method in which a laser beam is irradiated on a laminated resin molded body to penetrate the irradiated surface and is absorbed on the other surface, and is melted and fused. The plastic laser welding technology can achieve not only the other conventional plastic welding processes but also the plastic laser welding technology. With high productivity, it can also obtain integrated welding parts, greatly improving the shape of the parts, the freedom of dimension design and the automation of the project.
Recently, Nantong Xingchen, an important engineering plastics production and research and development base under the Bluestar Group, has made significant progress in the field of laser-weldable PBT engineering plastics. It has officially introduced laser transmission-welded PBT engineering plastics under the trade name Starester® LT (Laser Transparent).
In recent years, laser weldable engineering plastics have attracted widespread attention from scholars and technical R&D personnel from various countries. In 2010, BASF, the world’s leading chemical company, introduced Ultradur LUX series laser welding products. In 2016, Panasonic introduced a laser welding type. PBT engineering plastics.
As an important engineering plastics production and research and development base under the Bluestar Group, Nantong Xingchen is committed to the mid-to-high end market and is committed to the innovation and differentiation of engineering plastics products. As an integrated upstream and downstream supplier of PBT engineering plastics, Nantong Star has become a global player. The third mastered the core technology of laser welding PBT engineering plastics and realized the first in China. Related technologies have recently applied for intellectual property protection.
Customer evaluation results show that the material has high laser transmittance, high welding strength, can be widely used in automotive parts, electronics and medical fields.
This is plastic
This is a laser
This is welding
Plastic laser welding The laser beam is irradiated on the laminated resin molding body to make it Through The irradiation surface is absorbed on the other surface, and melting and fusion are performed.
When the bonded plastic part is Very sophisticated material (such as electronic components)Or require a sterile environment (such as medical devices and food packaging), laser welding technology can be of great use. Laser welding technology is fast, especially suitable for Automotive plastic parts Line processing. Also for those that are difficult to bond using other welding methods Complex geometry Laser welding technology can be used completely.
Laser welding plastic technology Advantages, many uses, for example:
Automotive Industry and Components: Laser welding plastic technology can be used to manufacture many auto parts, such as automatic door locks, keyless entry and exit devices, fuel nozzles, shift racks, engine sensors, cab racks, hydraulic tanks, filter racks, headlights and taillights. Other automotive applications include the manufacture of light manifolds for intake manifolds and the manufacture of auxiliary water pumps.
Medical industry: Laser welding technology can be used to manufacture liquid storage tanks, liquid filtration equipment, hose connectors, ostomy bags, hearing aids, implants, analytical microfluidic devices, etc.
Electronic device package: The packaging technology of electronic device products has very strict requirements on the welding environment and process, such as low dust content, low heat, no strong vibration, high packaging precision, reliable and durable seams, beautiful appearance, etc. A large part of the packaging materials is plastic. Therefore, plastic laser welding also has a great application space.
However, laser welding technology requires high materials , usually within a certain wavelength range, A material transparent to laser , The other has a higher absorption rate at the laser wavelength. In the laser welding process, the welding of the material depends on the energy of the laser beam reaching the absorbent material. If the transmissivity of the material is low, The welding time will increase, leading to melting or degrading of the upper layer material, and the surface of the lower absorbent material will not be melted by heat.
Due to the low transmittance, ordinary PBT materials cannot be used as laser transmission materials. Nantong Xingchen has fully utilized the integrated technology advantages of upstream PBT resin, and through front-end control and rear-end modification, has successfully developed a high-laser transmission PBT with a product specification of Starster. ® 110G20 LT.
The main features are the following:
1 High laser transmittance
Starester® 110G20 LT has a high laser transmission rate, wavelength 800-1200mm, PBT parts thickness 1mm transmittance of up to 72% or more, the laser can pass through, absorbed by the underlying material, to achieve instant melting effect.
2 Excellent heat resistance
Starester® 110G20 LT has excellent heat resistance, high heat distortion temperature, up to 195°C (1.8MPa, 3.2mm), and long-term use temperature of 130-140°C. It is not susceptible to thermal deformation during laser welding.
3 Low warpage
Starester® 110G20 LT has excellent dimensional stability, small shrinkage anisotropy, less than 0.5 mm warpage when the laser melts, and is less prone to gaps, ensuring the strength, airtightness and waterproofness of the welded parts.
4 High welding strength
Starester® 110G20 LT is laser-welded to a bond strength of up to 400N at the right power and scan rate.