(1) ¿But what do you sell? ¿What is your product?

We sell tyre treads that later our clients use to manufacture soles and shoes.

(2) ¿What is a tyre tread?

It is the exterior layer of the tyre that makes contact with the road or the ground. At the end of the day, it is a tyre rubber sheet 1,8 meters long and 14cm wide that happens to be excellent to make soles.

(3) ¿How many pairs of shoes can be produced with each tyre tread?

The answer depends. Covering the whole surface of the sole, would be three pairs. In case of covering just one part of the surface through grafts in another material, the quantity would increase considerably.

(4) ¿Is the length and width of all the treads always the same?

No, they vary slightly. The treads depend on the size of the tyre of origin. If we extract a tread from a 205/45/15 tyre, we will get a 14cm wide and 160cm long tread. For a 255/65/18 tyre, we will obtain a 17cm wide and 230cm long tread.

Before obtaining the bands, we select the tyres so that we use the largest in each batch. Depending on the model, technical sheets are available that indicate the expected widths and lengths in each lot.

(5) ¿What thicknesses are available?

By provisioning ourselves with tyres that have never been used, all treads have an initial thickness of 10mm with a textile reinforcement. We can reduce that thickness and offer any thickness between 10 and 2,5mm.

(6) ¿What is the textile layer?

It is a layer of the tyre that is not visible, since it is below the rubber. It consist in nylon or aramid threads that reinforce the structure of the tyre. This layer reduces the elasticity of the tread to 20%, although it reinforces it structurally.

Most of the footwear sector requests its elimination, so that a lighter and more flexible sole is obtained, keeping the abrasion and sliding properties intact.

(7) ¿What is the difference between the material with textile and the material without textile?

The brands that decide keeping the textile can choose any thickness between 2,5mm and 10mm. Is recommendable for brands who look for stiffness and consistency in their footwear. It should be noted that, for treads with textile and small thickness the tyre footprint will be less noticeable. In case of maintaining the textile, we recommend a minimum thickness of 3.5mm so that the footprint can be well visible.

The brands that decide to remove the textile can choose any thickness between 2,5mm and 8mm. This option happen to be the most popular, since after removing the textile you get a more flexible and lighter tread, easier to manipulate.

(8) ¿What models are available?

Summer is the model we produce although there are available some winter patterns as limited editions. You have to consult in advance the availability of these editions.

(9) ¿What is the maximum amount per model?

Currently, 120.000 units of the V model (SUMMER) and 25.000 units of the limited editions are obtained annually.

(11) ¿Which is the supply format?

The material is prepared in special pallets of 200x100cm of 300 units, which reach a height of 80cm. Each unit (each tread) is 1.8 meters and 14cm wide on average.

These pallets are stackable at three heights, and each of them reaches a weight of 800-1000 kilos, depending on the model selected. If material with thicknesses less than 10mm is requested, the height-weight of the pallet decreases linearly.

This means that shipments can be made taking advantage of the maximum authorized transport load. In the case of Spain, about 24t per truck.

For customers who need shipments of less than 300 units, specific packages are prepared with Europallet, half pallet or boxes, to optimize the cost of transport.

(12) ¿What is the composition of our material?

The base composition of the mixture is SBR, and it is specifically additivated to resist UV and ozone radiation, as well as to have excellent grip properties and wear resistance in any type of environmental condition; since, it is designed to keep the properties intact in extreme cold, heat, humidity, salinity, etc. conditions.

Keep in mind that we do NOT manufacture the material, we just rescue the tyres and extract the treads. The detailed composition of the material is in the hands of the tyre manufacturers that for reasons of confidentiality cannot share with us. Anyway, in our technical data sheet appears the chemical and physical tests that we have made to the tyre treads. We can share this information upon request.

(14) ¿What are the mechanical properties of the material (Hardness, Abrasion, Density ...)?

In our technical data sheet appears the chemical and physical tests that we have made to the tyre treads. We can share this information upon request.

(15) ¿Where does the material come from?

Almost all the material we supply comes from the tyres that do not pass the strict quality controls required by the European-made tyres. These tyres follow exactly the same path as used tyres do and end up in waste treatment centres.

We take advantage of the quality of these tyres which, despite being removed from their commercialization for cars, keep a homogeneity in quality and properties, excellent for the manufacturing of soles and shoes.

(16) ¿Can you work with used tyres?

Used tyres can be requested, taking into account that the patterns are random. In other words, we do not distinguish models and in each lot the variability in the drawings is so high that the repetition in the drawing is low. This make each pair to be different.

Furthermore, the used tyre has a maximum thickness of 5mm, and it is always necessary to keep the textile layer, which gives the structural stability. If this layer is removed, the integrity of the bonding gum can be affected.

(17) ¿Is any special treatment necessary in the gluing process?

The tyre sole does not need special processes in comparison to other rubber soles. We would use the same advice; sanding the rubber or applying halogen liquid on it would strengthen the gluing.

The halogen liquid is the impregnation recommended for the rubber. Each material has its own recommended impregnation to strengthen the gluing.

(18) ¿Is it possible to sew the material like the leather?

Yes, as long as the thickness of the tyre sheet is less than 6mm.

(19) ¿Is our material compatible with the manufacturing of soles or/and footwear through vulcanization? ¿What thickness is most suitable for this process?

Yes. Both, vulcanization of precast soles and vulcanization of finished shoes.

Precast soles: With a mold that has a gap to place a piece of tread, bimaterial soles are achieved, allowing to add color to the sole. Due to the high pressures that are reached in the vulcanization process, it is recommended to use low thicknesses, to avoid deformations during the process.

Finished shoes: Including a piece of die cutted tyre in the vulcanization of the whole shoe. Since the used pressures are not as high as in the previous process, higher thicknesses can be used.

It is always recommended to perform some previous tests, to know what is the ideal thickness.

(21) ¿Is our material compatible with the manufacturing of soles or/and footwear through injection process?

So far, has not been possible to make the tyre compatible with polyurethane injection. For injection of other materials, it is recommended to carry out previous tests to verify if they are compatible.

Our technical team can propose processes prior to the introduction of the piece in the mold to activate the joining surface.

Others

(22) ¿What is tiresoul?

Tiresoul is our Brand! Although the project was born a few years ago, in December 2018 we realized that it was vital the market to identify us like a brand in the footwear sector and thus tiresoul was born with the slogan “new step without trace”.

(23) ¿What advantages does tiresoul have over other materials?

The main advantage is the use of the excellent properties of the tyre, resistance, grip and abrasion, as well as being a recycled and sustainable material for the planet.

We are able to extend the lifetime of the tyres through an innovative recycling initiative, using it as a sole in the shoes. Massive tire manufacturing is serious environmental problem and tiresoul proposes one more alternative to deal with it, offering a high value-added product and, besides, recycled.

(24) ¿What are the environmental benefits of choosing tiresoul?

Apart from the recycling of a rejected material, we have calculated that we reduce the environmental footprint 0,5kg of CO2 per rescued tread.

(25) ¿What is the main limitation of tiresoul?

Initially, the main disadvantage of the material was that the colour of the sole could only be black since only we knew traditional shoe and sole manufacturing processes. However, today we know that our clients are able to offer colourful soles with tyre through glued or vulcanized tyre grafts.

(26) ¿Do you have distributors throughout the world?

Yes. We have distributors in Alicante (South Spain), Portugal and India.

(27) ¿Do you have a product catalogue?

We have a technical data sheet for each available model. This sheet describes the dimensions of each model, since there is a slight variation from one to another. Summer bands, in general, are wider and longer.