Download: Catalogue datasheet 2012

Safety and action boots for fire-fighting units

DOUBLE DENSITY RUBBER SOLE DIRECTLY INJECTED TO THE UPPER (DDR):

Production has implemented the most innovative technology in injection molding machines for footwear that allows DOUBLE DENSITY RUBBER SOLE DIRECTLY INJECTED TO THE UPPER (DDR).
This is currently the best technical solution to produce the most long lasting special boots for firefighters, military, forestry and foundries, given the high protection and durability this sytem provide against heat, fire, chemical attack and weather resistance and adhesion between leather upper and sole. THE MOST RESISTANT SOLE IN THE MARKET!

Pictures of the 24 stations injection DDR DESMA machine with four injectors and two robots

With this new system of injection directly to the upper, the sole is fused and filtered through the pores of the leather and the insole, to form a single compact block.

With this new system of injection directly to the upper, the sole is fused and filtered through the pores of the leather and the insole, to form a single compact block.

This system has three advantages:

• The sole can not be cut off because there is no glue as a bonding agent between the sole and the upper. The adhesives have the risk that they may react or decompose to moisture, excessive heat or cold.

• You can not rip because no thread is used to sew the sole to the upper. The thread may be burned with the flames or broken by cuts or abrasions.

• There are no empty spaces inside the sole that can be filled with water as can happen in the cemented soled. Injected soles cover the 100% of the volume of the mould.

In addition, the sole is composed of two distinct layers in density but the same material, the rubber. This two layers has identical material with the same chemical composition, with diferent density, and injected at the same time in semi-liquid state, so the bond between layers is perfect. The union between the two layers are produced by chemical reaction so no need previous treatments, use of adhesives or use of textiles as a link, as it does in the rubber soles with polyurethane.

The two layers are as follows:

The MIDSOLE: It is low-density foam rubber. It is responsible for the following characteristics:

• CUSHIONING: Energy absorption in the heel = Comfort. Test “E” of EN ISO 20344 ensures superior cushioning to 20J. Promotes comfort and unloading step the impact absorbed by the spine during lifting, long periods of standing or running. Monodensity cemented soles are usually hard and not damped.

• ISOLATION: Thermal insulation both cold and heat. The foam material is composed 
of micro-bubbles of air with excellent thermal insulation.

• The same physical properties of rubber that has the ousole.

The OUTSOLE: It is high-density compact rubber. It is responsible for the excellent technical characteristics are as follows:

ADVANTAGES OF DOUBLE DENSITY RUBBER in comparation with other systems with polyurethane:

More heat resistance:

• Resistant to high and low temperatures.

• Resistant to heat contact.

• Radiant heat resistant.

• Flame resistant.

More chemical resistance:

• Resistant to ozone.

• Resistant to the ultraviolets of light.

• Radioactive radiation resistant.

• Excellent resistance to mineral and vegetable oils.

• Resistant to fats, aromatic hydrocarbons and petroleum products.

• Resistant to solvents, alkalis and acids.

• Moisture resistant and to the decomposition by hydrolysis.

• More resistant to many chemicals.

More mechanical and biological resistance:

• Abrasion resistant.

• Abrasion resistant hot.

• Slip resistant.

• Resistant to aging.

• Resistant storage for a long time.

• Resistant to termites.

• Resistant bacteria.

• Resistant microorganisms.

DESIGN OF THE S9 ERGO-PREDATOR SOLE:

During the design of the sole, have been taken into account many more aspects than the purely aesthetic. Knowledge of the use and the environment in which the boot will be used is essential to perform their functions satisfactorily. The sole has been specially designed to work on very steep or rough floors, rubble and rescue works, progression and slippery in mountain slopes and steep slopes, with continuous presence of water, mud, snow and ice, possible use of ladders, climbing scaffolds and / or metal structures, etc. It also meets widely the requirements of the EN ISO 20235 / 20347 and EN 15090 about the design.

CAD-CAM design, several field trials and laboratory tests developed and validated in the I.B.V. Institute of Biomechanics of Valencia have resulted in the new sole

SERIES 9 ERGO-PREDATOR whose main features are explained below:

Angle in the toe area on the floor plan favors the passage at the time of takeoff.

Front cleats in the toe area with saw shape improve the grip in the steep ascent.

Back cleats in the heel area with saw shape improve the grip in the descending of slopes.

Angle in the heel area with the plane of the plant favors the step in the support time. Avoid excessive wear on both pronator and supinator users.

Outer edges of the sole favor the side displacements edging on steep slopes and hillsides. Relief height of the cleats is more than 6 mm against 2.5 mm required by the standard (EN 20345 requirement).

Design central cleats also enhance grip in rough terrain, mud, water, snow, etc.. while evacuating large channels to the outside elements.

Energy absorption zone, with the tunnel system design heel, improves the cushioning of the sole. With proper design and optimum formulation of the midsole material is possible to reach values of energy absoption of more than 70J in front of the 20J required by the standard (EN 20345 requirement).All the reliefs of the sole present channels or outlets to the outside, with self-cleaning chanels (EN 20345 requirement). Also in the area of the toe and rear. This will prevent also the aqua-planning.

Central chanel that marks the line of bending of the sole and the natural flexion at the height of the metatarsals. There is no any open cross- line through the sole without cleats (EN 20345 requirement).

Channels and blocks forming a semicircle permit to pivot easily on itself during changes of direction.

The dimension of the heel with cleats is greater than 0.25 x L, where L is the total length of the sole (EN 20345 requirement). The height is less than 2cm to facilitate the steps and settlement of the foot without damaging the spine.

Waist area provides crossed cleats with more than 2mm relief to grip ladders, climbing poles, towers, etc. (EN 15090 requirement).

The dimension of the plant with cleats is greater than 0.45 x L, where L is the total length of the sole (EN 20345 requirement). A large clested area improves slip resistance.

The width of the plant has been expanded to increase the stability of the foot, improving the user's balance in rough terrain and the support and grip when using ladders.

The waist area has a width greater than 35mm. Heel height has a vertical sidewall more than 10mm and the angle of the heel is greater than 90o (EN 15090 requirement).

ADDITIONAL TESTS OF THE CE STANDARDS:

With regard to the European Standard optional tests that also could meets the sole, mainly be highlighted:

• The test “HRO” or contact heat resistance. The sole is capable of withstanding more than 300°C for more than 1 minute without causing any damage. This feature is met both in the outsole and in the midsole. Other polymeric materials such as polyurethane PUR, EVA, TPU, PVC, etc. melt over 150 °C and ther efore not recommended for use in soles, insoles or heels filled if the boots are for jobs that can reach these temperatures.

• The rubber used contains acro-nitrile additives, which give the shoe qualities resistance to hydrocarbons, like gasoline, grease and all petroleum products, test “FO”.

• Resistance of the sole to heat, test “HI”. Placed the boot at a temperature of 150°C during 30 minutes, the temperature inside the wearer's foot will not increase more than 22°C to minimize sweating and heat stress.

• Resistance of the sole to cold, test “CI”. Similarly, if we place the footwear at an ambient temperature of -20 C during 30 minutes, the boot is insulated so that the interior temperature decrease produced at that time does not exceed 10 C.

• Additional reinforcement to the toe (OPTIONAL). By an extension of the rubber midsole protects the area of greatest impact as the toe against shocks and abrasions caused by stones, falling objects and rubbing with abrasive surfaces that could break the leather. Extends the life of the boot. In prefabricated soles, additional reinforcement can only be included by incorporating pieces of leather or rubber, glued and/or sewn with time and use can become unstuck.

ERGONOMY, LAST AND SIZES:

The last has been designed as volumetric anthropometric studies of the European population by the I.B.V. Institute of Biomechanics of Valencia.

Therefore:

• It's higher and wider than most of the market lasts to imporve the user comfort. Been taken into account that the boots are to be used with thick socks so the fit of it is very spacious and comfortable.

• About the sizes range, the boot are manufactured from size 36 to 48.

Its equivalence with other sizing systems are: