News Info News

This news article was originally written in Spanish. It has been automatically translated for your convenience. Reasonable efforts have been made to provide an accurate translation, however, no automated translation is perfect nor is it intended to replace a human translator. The original article in Spanish can be viewed at El marcado y la soldadura láser de plásticos
Solutions Merck: Iriotec 8000

The marked and the welding laser of plastics

Editorial Interempresas16/10/2012
The applications of laser for processing of plastic are increasing continuously. It does not matter if it wishes mark, cut or solder; can realise many of these tasks successfully using the laser. So much the welding laser like the marked laser execute without contact and consumables. With the marked laser, is possible the flexibility, the durability and avoid use dissolvent or previous treatments elaborated. This can offer important advantages of costs in comparison with other methods of marked, as well as a cleaner environingingment.

The welding by laser offers the possibility to solder almost any form without vibrations and without generation of strong heat, that is important for the sensitive components. Different types of polymers can solder of durable form, and the fact that the sewing of welding remain unseen offers additional aesthetic advantages in the design.

So much the welding laser like the marked laser execute without contact and consumables
So much the welding laser like the marked laser execute without contact and consumables.

The processes of marked laser

Marked with the laser vector

With a vectorial laser, the mirrors of galvanometer of high precision move . These guarantee no only a high dynamic, but also an exact positioning of the scrape laser in the piece. With this, the finest textures can mark with an exceptional precision in the outline, even to high speeds of processing.

With this method also exists the option of 'marked on the fly'. Here the movement of the mirror of deviation adjusts with the change of position of the piece that is marking , to be able to inscribe the product without any distortion. The speed of the half of transport is measured continuously by a decodificador of signal to reach a constant registration, also during the set up and the phase of desaceleración.

Marked with the laser of mask

A laser of mask uses a ray laser expanded, that projects through a mask/cavity. With each pulse of the laser creates a mark in the piece. The laser of mask more important for the registration of plastic is the laser CO2. With this method, can attain speeds very elevated of marked, therefore, this type of laser uses with frequency for the identification of batches of mobile pieces. The fault of flexibility of the mask of laser plays a paper subordinated with this application.

The processes of welding by laser

With the welding laser of thermoplastic, creates a connection between two or more pieces of union by means of heat generated with a ray laser. The method more frequently used is the welding laser by transmission.

So that the welding of two materials through the light laser was possible, a component has to be transparent to the scrape laser, and the another has to be absorbent. Both are fixed through a device and are presionados mecánicamente the one to the another. The ray laser penetrates the transparent material and hits the another material absorbent. In this moment, the ray laser transforms in heat and drives to the fusion of both components.

Welding by laser

Outline of welding

In the welding of outline, a ray laser focused displaces secuencialmente along the sewing of welding and melts locally. Because of the geometrical condition, the volume of welding keeps on being small and the release of the mass melted avoids . The relative movement llevar through the movement of the component, of the laser or a combination of the two.

Welding almost-simultaneous

In the process of welding almost simultaneous, the ray laser moves with a very high speed many times along the sewing of welding. Since the time of cooling is longer that the time of cycle, the polymer suelda almost at the same time - of form almost simultaneous. This process is similar to the outline of welding in terms of flexibility, but is faster.

Simultaneous welding

During this process, one or several lasers heat the sewing of welding simultaneously. Thanks to his compact construction, the laser of diode allows in general to attain a high performance. Weldings lineares can realise easily. And besides, new elements developed recently allow the creation of almost any form of ray.

Iriotec Series 8000: optimisation of results in the marked laser of plastics

After having explained all the advantages of these two processes, have to require that the majority of the polymers can not be marked or soldiers with laser GO without the addition of additives. Through the employment of suitable additives, can attain the necessary sensitivity for the power of the laser, independently of the polymer or of the colour wished.

The additives of Merck for laser transform the power of the light laser and, in this way, attain a change of visible colour. This change of colour can obtain of two different ways. Depending on the application, Merck can offer any pigment that attains the change of colour through a reaction with the surrounding polymeric matrix. As alternative, can opt by systems sensitive laser formed by organic and inorganic components that mark from inside (intrinsic) and therefore are independent of the polymer circunstante.

Merck Can offer any pigment that attains the change of colour through a reaction with the surrounding polymeric matrix
Merck Can offer any pigment that attains the change of colour through a reaction with the surrounding polymeric matrix.

The marked of perfect laser for a particular application depends on a lot of factors such as the polymer, additive, colorante and the type and the parameters of the laser. The identification of the correct configuration to attain the ideal combination can be a difficult task.

To find the correct product for his application, you has to have clear his needs. Which requirements has? What is what wants to attain?

When they use products in dust recommends to incorporate the pigment in a masterbacth or granza before adding it to the final product. This offers the advantage that the system of support can be adapted to the final application, like this the impurities of the material can avoid , if necessary. The use of granules offers the possibility to add the sensitive material to the laser in the final stage of the production. This gives flexibility, but the system of support (PE) does not have to interfere with the final application.

If it uses the marked laser with a wide range of polymers, the best election would be a system of marked intrinsic, to avoid the constant change of the composition of the material. The range of products Merck is adapted for different types of laser of which use today in the market for the processing of plastics.

Suscríbase a nuestra Newsletter - Ver ejemplo

Password

Select all

Autorizo el envío de newsletters y avisos informativos personalizados de interempresas.net

I authorize the sending of communications from third parties via interempresas.net

He leído y acepto el Legal notice y la Data protection policy

Responsable: Interempresas Media, S.L.U. Purpose: Subscription to our newsletter(s). User account management. Sending emails related to the same or related to similar or associated interests.Retention: for the duration of the relationship with you, or as long as necessary to carry out the specified purposesTransfer: Data may be transferred to other group companies for internal management purposes.Rights: Access, rectification, opposition, deletion, portability, limitation of processing and automated decisions: contact our DPD. If you consider that the processing does not comply with the regulations in force, you may lodge a complaint with the AEPD.More information: Data protection policy

REVISTAS

TOP PRODUCTS

NEWSLETTERS

  • Newsletter Plástico

    19/09/2024

  • Newsletter Plástico

    12/09/2024

Highlighted links

Enfriadoras Inteco, S.L.U.Plastics & RubberFundación Andaltec I+D+i

Latest news

Featured companies

OPINIÓN

ENTIDADES COLABORADORAS

OTRAS SECCIONES

Services