Lati & Dräger for road safety

Lati & Dräger for road safety

Dräger is a leading multinational company in the field of technology dedicated to the medical and safety field. The company’s motto, “technology for life”, also translates into the range of equipment designed to increase road safety.

The family of Dräger drug and alcohol detection devices for roadside testing by law enforcement today also includes additional solutions designed to allow the driver to personally test his or her driving ability.

Interlock 5000 and 7000 devices, which can be installed on any vehicle and equipped with GPS/GPRS communication modules, instantly detect the alcohol content in the breath exhaled by the driver, preventing the engine from being started in the case of positive test.

These devices require, of course, maximum operating precision, so as to prevent the vehicle from being blocked or, worse, used due to wrong measurements. In addition, the electrochemical sensor of the breathalyzer should be quickly ready for use and feature low power consumption of the electronics even at very low ambient temperatures.

To achieve these results, Dräger successfully used LATI Spa (www.lati.com) thermally conductive compounds of the LATICONTHER family based on 70% graphite reinforced PP and PA6. These technopolymers were chosen by Dräger engineers for the manufacture of the molded mouthpiece and sensor heaters due to their combined high electrical and excellent thermal conductivity greater than 20 W/mK, so one hundred times that of conventional plastics.

The injection molding of these pieces is made possible by the rheological properties of the compounds, formulated so as to ensure the filling of complex cavities despite the presence of a high percentage of conductive charge. Mechanical strength and heat resistance typical of automotive applications (from -30° C to + 85° C) are additional properties of selected compounds.

The special composition of PP-based LATICONTHER compounds also allows the use in contact with food and therefore with the driver’s mouth.

The performance of LATI compounds also allowed to obtain for the breathalyzers of the Interlock family both the E1 mark and the EN 50436-2 certification, the European standard for the use of blocking devices based on alcohol concentration for preventive purposes.

For any further information pls. contact LATI Spa technical service – www.lati.com.

Replacement of thermosets in the electromechanical industry

Replacement of thermosets in the electromechanical industry

Thermosetting materials have played a leading role in the history of applications related to transport, management and use of electricity. Since the time of the first synthetic resins, products such as bakelite and melamine resins, to which epoxy resins and polyester were subsequently added, have been widely used as insulation and safety materials. Modern markets, however, require simpler, safer and more flexible solutions during the converting process, which also offer recycling opportunities in the post-industrial stage and possibly also in the post-consumer one – that is at the end of the product’s life cycle.

For this reason, the attention of designers and technicians in the electrical and electronic sector gradually shifted towards the most advanced thermoplastic compounds able to provide advantages typical of thermosetting materials, especially in terms of dimensional stability and strength, as well as ease of use and low environmental impact.

Telergon, a leading Spanish company operating in the electromechanical sector and specializing in the manufacture of manual and motorized switches and changeover switches, has chosen a thermoplastic material for the production of changeover switches and bypasses of the latest generation.

The housings of the most recent devices, in fact, have been manufactured with LATER 4 G/30-V0HF1, a LATI self-extinguishing and structural PBT-based compound.
This choice has considerable strengths, such as, first, the base resin, a polyester that, unlike conventional polyamides, is completely anhygroscopic, thus ensuring dimensional stability, strength and dielectric strength even in very humid environments such as the Equatorial and Asian ones.

The material also features high self-extinguishing properties, UL-certified for low thicknesses without the use of halogen and red phosphorus as required by the most stringent market requirements in terms of respect for the environment and human health. As regards safety during operation, reliability is ensured by extraordinary electrical performance, with tracking resistance greater than 600 V and a high dielectric strength even in extremely humid environments.

This picture is completed by mechanical strength and dimensional stability typical of glass fiber reinforced compounds.The range of halogen and red phosphorus free LATI self-extinguishing compounds includes products meeting even the most demanding designers’ requirements thanks to the available formulations based on PA6, PA66, PBT and PPA reinforced with mineral fillers or glass fiber up to 50%.

Per maggior informazioni contattate i tecnici di LATI S.p.A. – www.lati.com

Ergonomics, functionality and safety with Acti 9 by Schneider Electric

Ergonomics, functionality and safety with Acti 9 by Schneider Electric

Innovating by optimizing interactions between man, machines and the environment. This principle has always been inspiring the engineers of Schneider Electric, a leading multinational company in the field of electric energy management.Acti 9, one of the latest Schneider products proposed in the field of modular systems for the final distribution of low voltage, was developed based on this inspiration.

Acti 9 is a system made of multiple devices for the distribution and measurement of the electric current supplied to the end user, and includes protection devices, monitoring and control, metering, communication systems as well as accessories for the installation.

Maximum safety is an absolute imperative when it comes to electric current, and even in the case of Acti 9, attention to ergonomics, flexibility and practicality cannot leave out the reliability of every single element of the project.

Schneider Electric, already partner of LATI for the self-extinguishing compounds used in the production of boxes, supports and housings, has decided to rely on LATI even for the materials to be used in the internal parts of its devices.In particular, the self-lubricating LATILUB 87/28-10T G/20 compound has been selected for the manufacture of the rotary cam actuating the switches of Acti 9, thanks to its excellent mechanical and tribological properties. Formulated from a PC matrix, thanks to the content of PTFE, this grade offers an extremely low friction coefficient resulting in a smooth, fast, pleasant and reliable operation without jamming over time.

Mechanical strength is also due to the structural reinforcement inside the compound, which in this case is made of 20% glass fibers. This is an ideal combination with the self-lubricating properties of PTFE. The amorphous matrix also ensures dimensional stability and compliance with geometric design tolerances, which is an essential requirement for an element required to perform a fundamental function under maximum safety conditions even in harsh environments due to external temperature or humidity.

The range of LATILUB self-lubricating compounds combines many materials developed during the long experience of LATI, and designed to meet the most demanding mechanical, thermal and chemical resistance requirements. However, the attention of Schneider’s designers was driven by an intrinsic advantage offered by LATILUB, namely the availability of self-lubricating elements perfectly able to operate even without external greases and oils, thus not requiring expensive maintenance and preventing the application from the risk of stopping or failure due to wear or dirt build-up between moving parts.

Per maggior informazioni contattate i tecnici di LATI S.p.A. – www.lati.com

LATILUB for safety and protection at work

LATILUB for safety and protection at work

Safety and comfort: two essential requirements of any personal protective equipment. The utmost attention to protection and wearability is definitely the Credo of ENHA, a leading German manufacturer of safety systems for head, face, hearing, and respiratory system.
ENHA GmbH is based and is producing in Nonnweiler, northern part of german Saarland, selling its products with the brand name ROCKMAN.

The lack of ergonomics, comfort and functionality is, in fact, the main reason why operators fail to wear equipment protecting health and safety at the workplace. To ensure the best functionality of helmet face shields, ENHA has designed a lifting mechanism entirely made of polymer, which combines maximum lightness, absence of jamming and smooth sliding even under a small force.

The material selected for the production of the lever actuating the opening of the face shield is LATILUB 66-10T Y/15, a sophisticated PA66-based self-lubricating compound. The special formulation of this material allows the reduction of the friction coefficient between two parts in relative motion due to the PTFE contribution to lubrication, thus making face shield lifting simple and easy.

The mechanism reliability over time is instead due to the aramid fiber powder dispersed in the polymer matrix. In fact, this additive allows to limit to a minimum the adhesive and abrasive wear, even the third body one, resulting from dust and impurities inevitably present in the workplace.

LATILUB 66-01M is another LATI self-lubricating compound based on PA66 and molybdenum disulfide included by ENHA in the same project for the manufacture of other parts of the lifting system requiring wear limitation. Of course, selected polymers should also meet other basic requirements, first of all mechanical strength of the entire item and dimensional stability of individual parts.

Self-lubricating materials are chosen to ensure continuous and reliable operation of elements such as sliding systems, shoes, gears, linkages, bushings, etc., because they allow the transmission of motion without external lubricants.

Fats and oils can, in fact, collect dirt and dust from the work environment, in addition to requiring ordinary and extraordinary maintenance, which are factors that involve a problematic and expensive management.
For further information please contact the technical service of LATI Spa – www.lati.com.

Structural compounds for S1 safety stirrups – Safe Riding

Structural compounds for S1 safety stirrups - Safe Riding

For a company specializing in the production of compounds for special applications such as LATI, the most sought-after success is to provide answers to those who work in the field of safety and design. This is even more valid if the project adopting LATI’s proposals is meant to protect people’s safety and health.
This is the case of Safety First stirrups of the Safe Riding brand, a special device designed, patented and marketed by the company to ensure maximum safety and comfort for all riding enthusiasts.

The engineering choice behind Safe Riding is based on the great field experience gained by TM Horses, an estate operating in the world of breeding and selection of horses for sporting purposes. By observing the many accidents that affect professionals and simple enthusiasts every year, Safe Riding has decided to design a stirrup allowing not only maximum comfort, but also the unseated rider’s foot to be released, thus preventing it from remaining anchored to the horse during the fall, with consequent great danger.

In fact, the S1 stirrup is designed to completely move 360 degrees outwards, and in all directions, allowing the rider’s foot to be released, thus avoiding to get it caught in the stirrup. The technical trials carried out in the company’s laboratories show that by applying a minimum force of traction on the center of the tip, the stirrups open completely, always releasing the rider.

Being entirely conceived and manufactured in Italy, this project necessarily required technological choices on an equal footing with the challenge. Along with the essential aluminum parts for the most stressed elements during the horseback ride, for the manufacture of all housing and lining parts, LATI’s structural compound LATIGLOSS 66 H2 G/50 was successfully adopted.
Provided with high mechanical strength thanks to the presence of 50% glass fiber by weight, LATIGLOSS was also chosen for its excellent aesthetic performance without defects, which is an essential requirement in an accessory such as the S1 stirrup, where functionality and safety are to be combined with design, elegance and style typical of made in Italy.

The care devoted to both the design and stirrup line necessarily required an impeccable quality of the exposed surfaces, even in the case of reinforced technopolymers. The choice of LATIGLOSS was combined with a material resistant, over time, to aggressive and complex environments such as stables and breeding.

For further information please contact the technical service of LATI Spa – www.lati.com

Perfect gears for professional shears

Perfect gears for professional shears

Lightness and strength are two overriding requirements in many of the industrial sectors where today metal is being replaced with alternative materials.
These features are even more important if the product to be manufactured has to be directly transported and used by the operator, especially if it comes to professional battery powered work tools.

This is the case of electromechanical pruning shears that Campagnola Srl (www.campagnola.it) has developed using thermoplastic materials also for structural elements traditionally made of steel or sintered metals.

Campagnola Srl, a historical company in the production of professional equipment for facilitated harvesting and pruning stands out for the research and development of reliable as well as ergonomic and functional tools, which are essential aspects especially in harsh environments such as agriculture.
With this in mind, a carbon fiber reinforced compound has been successfully used to mold the gear system for the power transmission from the engine to the blade unit of the new pruning shear. The selected material is LATILUB 88/50-20GRT K/10 from LATI S.p.A. .

This grade provides a PEEK matrix in which, in addition to 10% carbon fiber, a PTFE and graphite based self-lubricating system is dispersed. The technopolymer formulated in this way can meet extreme lubrication and temperature resistance requirements. Campagnola has made a choice without compromise, since PEEK ensures, in addition to thermal stability up to 260° C, also excellent dry lubrication, i.e. without oils or fats that may give rise to problems of maintenance and cleaning, especially in a demanding application field such as agriculture.

The appropriate compound conversion, which was entrusted to the experience of SICAM Srl, an Emilia-based company specializing in the molding of technical parts and in the construction of molds for small to medium size objects, allowed to make the most of not only mechanical and tribological properties of this compound, but also of the high dimensional stability of PEEK and graphite, which are basic parameters in the development of gear trains.

SICAM Srl (www.sicam.it) is also involved in the construction of the mold for these gears. This operation is of the utmost importance, especially considering both the necessary observance of dimensional tolerances of the parts and the typical conversion conditions of PEEK in terms of temperature management and fitting on the various parts of the mold. The result is a compact and noiseless gear train without unwanted vibrations, robust and 70% lighter compared to the conventional sintered metal unit.

For further information please contact the technical service of LATI Spa – www.lati.com

Radiopaque filament for 3D printing

Radiopaque filament for 3D printing

The 3D printing as an industrial manufacturing tool is becoming a reality thanks to the extremely fast evolution of not only hardware equipment and control software, but also resins used for the extrusion of filaments.

After the 3D printing stage for the development of prototypes, the market is now beginning to demand materials able to process real functional products also valuable for their technical features, such as electrical conductivity or mechanical performance.
Driven by these requirements, LATI SpA (www.lati.com) decided to deploy its know-how in the field of thermoplastic compounds. The purpose is to create a range of filaments for special use, intended for the most demanding makers in the industrial and professional field.

Nanovia, a specialist company in the world of filaments for 3D printing with filament melting technique, decided to turn to LATI for the development of a compound suitable for the manufacture of X-ray opaque filaments for additive manufacturing in the field of personal care.
LATI successfully proposed its LATIGRAY range material based on suitably modified PLA or PC polymers filled up to 70% by weight with high density ceramics.

The presence of these ceramics ensures variable X-ray opacity to obtain the desired contrast.
Despite the challenging formulation as regards the composition, the filament is flexible and easy to handle and unroll, and is highly suitable for extrusion through the nozzle of the 3D printer.
The melt rheology allows, in fact, the rapid and safe deposition of precise layers without interruptions.
The molded part is compact, with firmly adhering layers without deformation. Despite the high filler content, the quality of the obtained surface, too, is remarkable.

This performance is the result of the joint effort of LATI and its partners in the world of 3D printing, an area that required the review of technological choices and usual production methods for a manufacturer of compounds for injection molding.
LATI’s range of materials for additive manufacturing also includes grades for electrically conductive, self-lubricating, self-extinguishing, and metal detectable filaments.

For further info contact LATI Spa – www.lati.com.

Antistatic belt conveyors with LATISTAT

Antistatic belt conveyors with LATISTAT

There are countless situations in which the presence of electrostatic charges is a problem for both the safety of persons and the integrity and functionality of electrical and electronic devices.It is known that the formation of even high voltage electrostatic potentials may be generated by the fretting of two surfaces made of materials of which at least one is electrically insulating.

To avoid the risks connected with the triboelectric effect described above, the company Dinalager based in Terrassa (Barcelona) has chosen LATISTAT 47/7-03 for the manufacture of the wheels of its minirails used in belt conveyors for the handling of light loads.

The rail consists of a sheet metal guide on which the rings are mounted by means of metal pins in order to obtain a perfect electrical continuity that allows to ground any electrostatic charges.Dinalager’s goal was compliance with the European ATEX standards, which provide for materials a maximum surface resistivity of 10^9 ohm. With LATISTAT 47/7-03, surface resistivity is about 10^2 ohm, so a wide safety margin is available.The selected compound is made from PP copolymer featuring excellent impact resistance, ease of processing, anhygroscopicity, and is suitable for working temperatures up to 80°C.

Antistaticity is obtained by filling the thermoplastic matrix with a special carbon black. The morphology of its particles provides high conductivity with a low filling quantity. This allows to preserve a good part of the mechanical strength of the matrix, which is an essential aspect for a wheel supporting the stresses arising from the handling of packages and the change of feed direction.

LATI’s range of electrically conductive compounds includes several hundreds of grades developed from any thermoplastic polymer modified by the addition of carbon black, graphite, and carbon fibers and nanotubes. LATI engineers are at disposal for advice about the solution that best meets not only electrical project requirements.

Reinforced PPS for precision electronics

Reinforced PPS for precision electronics

The requirements in the field of electronics and telecommunications are ever more stringent with the progress of technological development that characterizes this industry.
From the miniaturization of circuits at high operating temperatures and the integration of functions to the obvious cost containment requirements to keep pace with the mass diffusion of the most advanced engineering: the challenge for designers is always open.

Also in the field of materials, acceptable compromises are becoming less and less, and especially polymers are often required to perform at the limit of application possibilities.
Although all electrical machines and electronic systems are object of miniaturization processes, for inductors and transformers this trend has to come to terms with the ever-increasing performance requirements inevitably involving high operating temperatures.

These are the reasons why F.lli Motta Srl decided to manufacture the spool of a series of transformers on ferrite using the LARTON G/40, a LATI S.p.A. material based on PPS thermoplastic resin with 40% glass fiber reinforcement.
All the components that make up a transformer are subject to a host of equally imperative project requirements.
First, the temperature resistance is set, in this case, at a minimum of 150°C in continuous.
Second, self-extinguishing properties for this project are engineered to meet UL94-V0 at 0.42 mm.

Dimensional stability of the product and the molten compound’s ability to fill even very thin cavities (less than half a millimeter) during the molding process are also fundamental.
Finally, the possibility to insert current-carrying pins without incurring problems of breakage or deformation.
LARTON G/40 is the perfect response to these demands due to the intrinsic self-extinguishing properties of polymer, the excellent thermal performance and resistance to aging that stands comparison even with synthetic materials of the upper price range.
LATI offers PPS-based compounds suitable for every application need and industrial sector: LATI’s engineers and R&D specialists are at disposal to examine any request.

LATIOHM for structural ATEX applications

LATIOHM for structural ATEX applications

The risks inherent to the accumulation of electrostatic charges have long been known and are subject to strict regulations, such as the ATEX Directive 2014/34/EU.
If the effects of an electrical discharge of several thousand volts are dangerous to persons and equipment, they may have devastating consequences in industry, especially in the case of electrical and electronic equipment.

To prevent the formation of high local electric voltages, all parts of the structure to be protected must be properly grounded. This delicate step is a challenge for polymeric materials, since the electrical resistivity of plastics prevents static discharges from ground leakage, thus contributing to the formation of localized electric potentials.

The compounds of the LATIOHM family of LATI S.p.A., www.lati.com, are proposed as a definitive solution to these difficulties due to their formulation using electrically conductive additives able to lower the surface and volume electrical resistivity of the product well below the limits set by the ATEX directive.

This is the reason why the Plastijet company decided to use LATIOHM 62-03 PD01 G/20 for the manufacture of a series of leveling feet for industrial machinery.
The selected compound is a PA6 made electrically conductive by means of carbon fiber, and at the same time it is glass fiber-reinforced.

The feet have not only to ensure the equipment grounding, but also to provide the mechanical strength required to withstand over time the continuously applied static load consisting of the machine weight, without incurring creep phenomena and consequent stability loss.
Besides electrical properties, excellent mechanical performance protects the machinery from all stresses typical of these applications, especially fatigue and vibrations, not to mention excellent appearance, which is now an indispensable factor in even the most technical parts.

The LATIOHM range includes electroconductive compounds also made of high thermal performance resins meeting all requirements in terms of safety and design.