RFH 355nm UV Nanosecond Laser Enables Toothpaste Production Line

Toothpaste, one of our most commonly used tooth cleaning products, has become a daily necessity. Toothpaste is usually composed of five parts: tube body, tube shoulder, nozzle, sealing piece and cap. In order to highlight the brand, manufacturers often print designed and very distinctive text and patterns on the toothpaste tube body, and also use laser The way of marking is to mark the production date or expiration date in a conspicuous position on the tube body.

In view of the material of the tube body, 355nm ultraviolet nanosecond solid-state laser is often used for marking.

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In the past, the toothpaste tube body was made of metal element aluminum, and now the toothpaste tube body is mostly composed of polyethylene, such as PET (polyethylene terephthalate), EVOH (ethylene/vinyl alcohol copolymer) These materials are environmentally friendly, have strong oil resistance, organic solvent resistance, and high mechanical strength, elasticity, surface hardness, etc., and are especially suitable for use as toothpaste tubes.

Ultraviolet laser light source has the advantages of short wavelength, high single-photon energy, good focusing performance, and small spot area, and can be used for high-precision material cutting, drilling, engraving and marking. Especially for some non-metallic materials and polymer materials, when using ultraviolet laser processing, the essence is not heat treatment, but a highly focused high-energy density beam acts on the surface of the material to break the molecular bonds and separate from the object. This way No high heat is generated, the heat affected zone is small, and no surface damage occurs, so it is called cold working.

This is the case with the RFH 355nm UV nanosecond laser. The 355nm UV laser beam output by it is of high quality (M2<1.2), and the spot diameter can be as small as about 10um after focusing. The marking lines are thin, and information such as toothpaste production date can be clearly marked. It is suitable for occasions with high marking requirements. ; Very narrow pulse width (about 20ns), heat has no time to accumulate on these polyethylene composites, so there is no need to worry about charring and carbonization.

Very importantly, it also has the characteristics of easy integration. It can be easily integrated into the toothpaste production line through foot pads and bolts. With optical components or vision systems, high-quality laser marking on the toothpaste tube body on the production line can be achieved. , liberate manpower and improve production efficiency.