FR2783251A1 - Material for molding into surface claddings for roads is composed of waste plastics granules with a bitumen bonding agent and aggregates for heating and molding - Google Patents

Abstract

The material for molding into surface claddings is composed of crushed waste plastics, of one or more types. The granules are coated with a bonding agent with at least one bitumen base. The plastics materials form at least 75 wt.% of the molding material. The material for molding into surface claddings is composed of crushed waste plastics, of one or more types. The granules are coated with a bonding agent with at least one bitumen base. The plastics materials form at least 75 wt.% of the molding material. The bonding agent contains colored pigments. The material also contains a defined vol. of reinforcement matter such as sand, gravel, and aggregates integrated into the cladding material after heating. After heating, the material is fed into a mold to be shaped. The material is heated at 30-90 deg C to soften the plastics content. A temp. of 100-130 deg C is used to melt the bitumen bonding agent and give the plastics granules an even coating when they are mixed together into a homogenous mixture. After the reinforcement sand, etc. has been added, the mixture is heated at 100-130 deg C and poured into a mold.

Description

The moldable composition and its manufacturing process The present invention

relates to a moldable composition,

  in particular for the manufacture of surface coating products, as well as the process for manufacturing such a composition.

  Plastics are widely used in industry today. This results in the production of a large number of plastic waste of any type. Due to the diverse origins of these plastics, they are difficult to recycle for new use. Furthermore, when a new use of plastics is envisaged, it often relies on a use as a binder of said materials. This results in the consumption of small quantities of materials

  plastics which does not make it possible to exhaust the stock of waste plastics available.

  The object of the present invention is therefore to propose a moldable composition and a process for the manufacture of a moldable composition allowing the use in large quantities of plastic waste of origins.

2 various and any.

  Another object of the present invention is to provide a

  moldable composition and a method of manufacturing a moldable composition making it possible to obtain a material of low cost, the applications of which are numerous.

  To this end, the subject of the invention is a moldable composition, in particular for the manufacture of surface coating products, characterized in that it consists of a shred of one or more plastic material (s), of which the particles are coated with a binder based on at least one bitumen, the plastic material (s) representing at least 75% by weight of said composition.15 Such a composition has a significant amount of

  plastics of any origin.

  According to a preferred embodiment of the invention, the

  binder further comprises paint powders.

  A further subject of the invention is a method of manufacturing a moldable composition used in particular for the manufacture of surface coating products, characterized in that it is heated, in particular to a temperature within the range [30 C - 90 C], one or more ground material (s), in that a bitumen-based binder is heated to a temperature in the range [100 C - 130 C], that plastic material (s) and binder are mixed in proportions such that the plastic material (s) represents (s) at least 75% by weight of the mixture, in that the mixing is continued until obtaining '' a homogeneous mixture in which the binder coats the particles of plastic material (s). The invention will be clearly understood on reading the

  following description of exemplary embodiments.

  3 The moldable composition, object of the invention, is more particularly intended for the manufacture of surface coating products, such as mixes for roads, parking lots, terraces or molded parts such as slabs ... This composition consists a ground material of one or more plastic material (s) whose particles are coated with a bitumen-based binder. By ground material of one or more plastics is meant a ground material obtained from a single plastic material or10) a mixture of plastic materials having different compositions. These plastics are generally general-purpose plastic waste. Grinding is generally carried out by means of a hammer mill. The plastic materials appear after grinding in the form of particles, the particle size of which is of the order of several millimeters. The binder used is

  a bitumen conventionally used in the manufacture of surface coatings.

  The plastic material is present in said composition so as to constitute at least 75% by weight of said composition. Due to the quantitative importance of plastics in the composition, the composition obtained is of low cost. The binder may, for its part, comprise, in addition to bitumen, paint powders. These paint powders are wastes obtained during the

  spraying paint powders on parts to be painted. Powders that have not adhered to the workpiece are dispersed on the floor. They are recovered30) in order to be able to be incorporated into the binder of the composition which is the subject of the invention.

  This composition can have various applications. Indeed, this composition can be incorporated, as a filler, in a predefined mixture of materials used for the production of coating, such as sand,

  gravel, so that the predefined filler and mixture form the final coating after heating.

  4 This composition can also be poured, after heating, into a mold to form a molded article, such as a slab or any other product, in particular a surface coating product. 5 To obtain such a composition, the stages of the manufacturing process are particularly simple. In fact, one or more ground plastics are heated to a temperature in the range [30 C - 90 C], these plastics being of any origin. It can be seen from the temperatures used that the

  plastics do not reach their melting temperature, as is conventional in the plastics processing processes. In parallel, onl1 heats to a temperature in the range [100 C -

   C] a bitumen-based binder, this binder being able, as already mentioned above, to also incorporate paint powders resulting from paint operation waste. We mix plastic material (s)

  and binder in proportions such that the plastic material (s) represent at least 75% by weight of the mixture.

  The mixing is continued, carried out by means of a kneader, until a homogeneous mixture is obtained in which the binder coats the particles of plastic material (s). A2; once these operations have been carried out, the composition can be used as it is by simply being incorporated into

  the predefined composition of a coating. In this case, it is used as a filler for the coating. This mixture and predefined coating composition is heated to a temperature in the range [100 C - 130 C] to form the final coating.

  Another application consists in subjecting the mixture, as mentioned above, to heating at a temperature in the range [100 ° C.-130 ° C.] and to placing said heated composition in a mold to form a molded article.

  Consequently, the composition as mentioned above

  above presents several applications. It can be used as is without additional treatment. It can be used as a filler in a predefined composition of a coating or it can be used as a filling composition for a mold. These diverse applications allow the use of a large

amount of plastic.

Claims (1)

6 CLAIMS   1. Mouldable composition, in particular for the manufacture of surface coating products, characterized in that it consists of a ground product of one or more plastic material (s) whose particles are coated with a binder. base of at least one bitumen, the plastic material (s) representing at least 75% by weight of said composition. 10 2. Mouldable composition according to claim 1, characterized in that the binder also comprises paint powders.   3. Mouldable composition according to one of claims 1 and   2, characterized in that it is incorporated as a product of   filler, to a predefined mixture of materials used to produce coatings, such as sand, gravel, de2) so that the predefined filler and mixture constitute, after heating, the final coating.   4. Mouldable composition according to one of claims 1 and 2,   characterized in that it is poured after heating into a mold to form a molded article.   5. Mouldable composition according to one of claims 1 to 4,   characterized in that the ground material of plastics is a ground material of general purpose plastic waste.   6. A method of manufacturing a moldable composition, in particular according to claim 1, and used in particular for the manufacture of surface coating products, characterized in that it is heated in particular to a temperature within the range [30 'C - 90 C] one or? several crushed plastic material (s), in that a bitumen-based binder is heated to a temperature in the range [100 C - 130 C], in that the material (s) is mixed ) plastic (s) and binder in proportions such that the plastic material (s) represent at least 75% by weight of the mixture, in that the   mixing until a homogeneous mixture is obtained in which the binder coats the particles of plastic material (s).   7. The manufacturing method according to claim 6, characterized in that this mixture is incorporated into the predefined composition of a coating as a filler and in that the assembly is heated to a temperature within the range [100 C - 130 C] .15 8. The manufacturing method according to claim 6, characterized in that said mixture is subjected to heating at a temperature in the range [100 C 130 C] and in that disposes said heated composition in a mold.