LV13891B - Composites and methods of the articles manufacturing by using based on plastic organic fibers filled composites, by plastic injection molding method - Google Patents

Abstract

The invention is related to the plastic matrix based composites with high level of fillament as well based on them articles manufacturing with plastic injection molding technologies in combination with gas-liquid injection support method, including plastic co-injection method used. This method is especially suitable for such an articles manufacturing as pallets, one-piece chairs, boxes, body parts of the automotive, large size cable bobbins, other products manufacturing where low weight, high mechanical properties, aesthetic design and high requirements to the ecological aspects of the articles are demanded- their recyclability, biodestruction, reduced energy consumption in their manufacturing process. The invention is related as well to innovative receptions of the composites, which are usable without above mentioned gas or gas-liquid assisted injection molding method used, and are usable for the articles manufacturing by using standard plastic injection molding technology. The invention is related as well to different articles manufacturing methods, which include especial composites with cellulose nature fibres filament as reinforcement as well plastics replacement, considering also the uses of gas or gas-water assisted injection, in order to reach the articles with hollow reinforcement ribs. By optimizing the reception of composites, it is possible to increase the filament level of the fibres, keeping still good flow properties, reduce the manufacturing cycle time, as mentioned has the properties of crystallization at higher temperatures. The composites will better bio-destruct when landfilled, and because of especial receptions of the composites, uses of gas or gas-water assisted injection moulding is less limited in manufacturing the articles with hollow reinforcement ribs.

Description

Compositions and Techniques for the Production of Articles Using Specific Organic Fiber Filled Plastic Matrix Based Composites and Plastic Injection Molding Methods

Description of the Invention

BACKGROUND OF THE INVENTION The present invention relates to a variety of article manufacturing techniques which include special composite compositions / compositions with cellulose fiber filler as reinforcing component and plastic substitute component, including the use of gas or gas-water injection technology to obtain article strength ribs with hollow media. The present invention also relates to high-fill organic matrix compositions of organic fibers, as well as to the manufacture of articles based thereon using plastic injection molding technology in combination with gas-liquid injection techniques, including plastic injection molding. This technique is particularly suitable for the application of this technological solution in the manufacture of articles such as pallet racks, solid chairs, packing boxes, car body parts, bulky cable reels, for the manufacture of other products requiring low weight, high durability, aesthetic appearance and high ecological requirements - their recyclability, environmental degradation, reduced energy intensity in their production process. The invention also relates to innovative composite compositions which are usable without the use of said gas-liquid or gas injection only and are used in the manufacture of articles using conventional plastic injection molding technology.

Analysis of prior art

Various organic fiber-filled, polypropylene and polyethylene matrix-based composite materials are well-known for use in the production of various articles by plastic injection molding. A large number of such compositions are available at www.n-fiberbase.net or https://mbase.aixhibit.de/nfibrebase/homepage/english/index.html.

The high physico-mechanical properties of materials using polypropylene or polyethylene matrix which are suitable for injection molding of plastics can be achieved by a high degree of filling of flax, hemp, sisal and other similar fibers, but in most cases such composites have low tensile properties requiring high pressure plastic molding. applications, and at increased fill rates, PP / PE matrices are fragile.

Fiber, rice, bamboo fiber filled PP / PE matrices are relatively more fragile and have lower physico-mechanical properties than hemp, linen, sisal in other fibers of this type, such as Jer Envirotech / Canada / offer 40% wood-PP matrix composite particle board with a flexural modulus of 3707.03 MPa and an impact strength modulus of 24.25 MPa / ASTM D-638 /.

It is known that nanofillers - such as nanomaterials, alumina nanopowders, carbon nanopowders - radically improve the bending and impact properties of plastics. The use of these components in complex organic fiber filled plastic matrix-based composites has not been found.

High flexural radiation-treated polypropylene is known to increase its flexural and impact properties by 30-50%, but the use of such treated fibers in combination with organic fiber-derived, plastic matrix composites to improve the physical mechanical properties of the materials and to provide better bonding to polyethylene and / or polypropylene matrices.

IKEA uses polypropylene and fiber-optic composites for the manufacture of multi-part chairs with an organic fiber fill rate of less than 40% using a gas injection method for the production of hollow core components. The physical and mechanical properties of the material are lower than those of similar materials filled with flax, hemp, sisal or similar fibers.

Gas or gas-liquid technology traditionally uses materials that do not have plastic matrix filled with reinforcing elements or their reinforcing elements such as fiberglass, polyester fibers, mineral fillers - the application rate in plastic matrices does not exceed 40%.

Patent CN 1837277 protects an inorganic nanoparticle and plastic-fiber composition with composition: 24-98% plastic, 0-70% organic fiber, 1-30% inorganic nanoparticles.

The patent CN 1850900 protects the composition: 100/25 -100/170 parts by weight of polypropylene and wood fibers, 1-40 parts by weight nanometric density intensifier, 0-10 parts by chlorinated polyethylene, 1.0-3.0 parts by anoxidant, 0.5-3.0 parts by polyethylene wax, 0.5-3.0 parts stearic acid and 2.0-10% nanometric density dispersant.

US 7151125 protects a polymer and cellulose fiber composite consisting of a polymer and cellulose fiber composition wherein 30 to 70% is polymer, 70 to 30% cellulose fiber and 1 to 7% is a lubricant.

US 2003087994 describes a flax fiber and polymer composition as well as compositions comprising flax fiber, wood fiber and other cellulose fibers, inorganic fillers and PVC, polypropylene or HDPE.

A method of gas injection for obtaining plastic articles with hollow ribs is described in US 5308574.

Gas-liquid and liquid injection techniques for hollow core plastic product trunking have been discovered by BASF:

https://vvww.basf.com/businesses/plasticportal/water_assist_iniectionjnolding.htm.

This technique is used by Battenfeld / (Battenfeld Aquamold) and manufactured by: PME Fluidtech / Germany /; Maximator / Germany /; Technologie in Kunststoff GmbH / Germany /.

The method of plastic injection using a gas or gas-liquid injection method in combination with plastic injection to obtain reinforced ribs in articles is known and described by Bayer Polymers:

https://www.bayerone.com/gas-assist/ctc.htm /.

The use of gas-liquid injection systems in the manufacture of plastic products is described in GB 2419843, EP 1645394, US 6,896,844 B2 and other patents.

Patent Application WO2007036037 / Canada / and US 20070077379 AI discloses the use of a composite of cellulose fibers and plastics for the manufacture of articles by water injection forming a system of articles in which the use of cellulose fibers in composites does not exceed 40%, the channels are linear.

As shown by a series of experiments and studies of existing technologies, long configurations of complex configurations in plastic matrix composites with organic fiber fillings above 40% are very difficult to obtain. The problem lies in the following circumstances:

- high-density organic fiber composites have a high internal friction and absorption coefficient, which makes complex shapes and long channels difficult to form,

- the fibers are compacted and blocked and absorbed by gas or gas-water pressure,

- the inner walls of the articles are obtained in the channels with a porous nature, thus reducing the physical and mechanical properties of the article in these areas, as would be the case if the material were dense,

- The high (over 40%) filling of only wood fibers in the matrix makes the material fragile, so for products with high physically mechanical requirements and relatively large gas or liquid technology the hollow core strength ribs do not justify themselves due to the properties of the material.

By optimizing the composition of the composite, it is possible to increase the degree of fill of the fibers while maintaining the fluidity of the material, shortening the production cycle time, the high-temperature composites mentioned above having the ability to crystallize at higher temperatures, and reducing their specific composition. application of the gas or gas-water injection method in the manufacture of articles with hollow ribs.

The use of hollow ribs in articles significantly reduces their required mass to provide the product with the required physical and mechanical properties and increases the physical and mechanical strength of the articles. On the other hand, high (above 40% and above) organic fiber-filled plastic matrix-based composites are poorly exposed to the gas or gas-water injection method for obtaining hollow ribs, especially if they have a complicated configuration. This problem can be partially addressed by the use of special composites. This problem can be fully appreciated by using plastic co-injection in the hollow ducting process, since the injected plastic forms a protective layer in the ducting process due to gas or gas-water pressure, which prevents gas and liquid from acting directly on the injected composite material. As a result, the pressure absorption of the composite material is reduced, resulting in more sophisticated configurations and hollow ribs for products made by plastic injection molding using a high level (over 40%) composite organic fiber (including mineral) filler material in plastic matrices. .

The objects of the invention are:

- use of plastic molding technology and high (40-65%) filler compound compositions, including those that are biodegradable and contain natural fibers such as flax, cotton, hemp, wood fiber, etc. and thermoplastic compounds (compositions of monomers, oligomers or polymers), in place of a binder, in the manufacture of various products, including in combination with gas or liquid injection;

to offer technology for the manufacture of articles using the above composite product composition and gas or liquid injection method, including in combination with plastic co-injection;

- use pre-defined technologies (with / without gas or gas-water co-injection and with / without plastic co-injection) and compositions for the manufacture of individual articles with specific design features.

The objects of the invention are:

A) Special Composite Compositions / Compositions (see claims one through nineteenth), also in combination with gas, gas-liquid injection, in combination with plastic co-injection (but not necessarily), for the production of high organic and inorganic fiber filled articles plastic matrices;

(B) Techniques for the manufacture of articles by gas or liquid injection or gas / liquid injection combined with plastic injection molding of articles using the plastic injection molding process (see Figs.

C) use of said composite compositions / compositions and techniques for manufacturing said articles for the manufacture of a variety of articles, including but not limited to, chairs, tare pallets, tare boxes, cable reels, and the above compositions A) in connection with gas or gas; water injection, as well as plastic co-injection with gas, gas-liquid injection.

Summary of the Invention

The subject matter of the invention A) is set forth in claims 1 to 19, wherein a number of compositions are defined. The object of the invention B) is set forth in claims 20 and 21, wherein a number of embodiments of the method are used using the compositions according to any one of claims 1 to 19. The essence of the object C) of the invention is set forth in claims 22 and 23, which define some possible applications of said compositions A) and method B) for the manufacture of particular articles,

To solve the above problems, related to the high (above 40%) degree of filling of cellulose fibers in plastic matrices, using the gas or gas-liquid injection method in the manufacture of articles, the following solutions are offered:

- The method of plastic-gas or liquid co-injection is implemented in such a way that before the gas injection in the product channels the mass of the composite is still viscous but the part of the composite mass inside the mold is already crystallized and the plastic is injected immediately. In the case of gas-liquid injection, immediately after injection of a small amount of gas, the liquid is injected. As a result of gas or gas-liquid pressure, the plastic is pushed along the channel in its longitudinal direction along with the unhardened composite material. The injected plastic thus forms the backing layer. As a result of this type of co-injection, the gas or liquid injection process on the composite does not directly affect the gas or liquid, but the process of applying the force of pressure is mediated directly. As a result, ducts are also obtained in articles based on composite, where the proportion of plastics is less than 50% and even 35% (see Fig. 2), whereby the inner walls of the ducts are obtained without pores and are dense and channel configurations can be used. with relatively sharp bends and build relatively longer (see Fig.4, Fig.5 and Fig.6). The method additionally increases the strength of the articles, since the plastic layer in the hollow channels acts as a sandwich-type reinforcing element and eliminates the porosity of the inner surface of the hollow channels, which in turn weakens the physical-mechanical properties of the article;

- In the practice of the invention, special composite compositions are used, the main feature of which is the use of wood and / or rice and / or bamboo and similar fibers in combination with vegetable (flax, sisal, hemp and other similar) fibers in proportion to reduce intrinsic friction of the material during the injection molding and gas or liquid injection process, in which nanomall or other nanofibres are added in some cases, but not necessarily, to improve the physical-mechanical properties of the articles; irradiated polypropylene fibers 4-40 mm or PET fibers.

Description of attached drawings

The technical problems of blank channel formation using the injection method in the manufacturing process of articles based on said organic fibers, especially in the case of bulky article forming, where it is useful to create long configuration hollow ribs of complex configuration, are shown in Figs. .2, how long the process of obtaining empty, complicated, configurable channels is particularly difficult in these cases because the composite often obstructs these channels.

Fig. 1, which schematically shows, in the manufacturing process of articles based on organic fibers (filling rate above 40%), the formation of empty channels, the following designations are used: (1) - form; (2) - composite injection channel; (3) - gas or gas-liquid injection diesel; (5) - injected composite mass, based on plastic matrix, with high degree of fiber filling; (7) - Nature of the obtained hollow channel.

Fig. 2, which schematically shows a solution for forming a channel with a high degree of fiber filling in plastic matrices, uses the following designations: (1A) - shape;

(2A) - composite injection channel; (3A) - gas or gas-liquid injector diesel; (4) a plastic co-injector die (5) for obtaining an injected composite mass based on a plastic matrix and filled with high-fill fibers; (6) - co-injected plastic, which forms the backing layer in the channel formation process; (7A) - Nature of the obtained hollow channel.

Fig. 3, schematically showing, but not limited to, some possible channel geometric solutions, has the following designations: (8) - Product body; (9B), (9C), (9D), (9E), (9F), (9G) - Hollow channels of various configurations.

Fig.4 schematically shows an example of the construction of a hollow tension rib of a container pallet, where the following symbols are used: (8) - main body of the product; (9) and (9H) hollow ribs.

Fig. 5 schematically shows the construction of a container box using the following designations: (8) - the main body of the product, (9i) - hollow product channels, (13) - the possible place for plastic and / or gas and / or liquid co-injection.

Fig. 6 schematically illustrates a segmental cable reel construction using the following designations: (8) - product body, (9j) - hollow product reinforcement ribs, (10) and (11) segment joints, (13) - plastic and / or Possible space for gas and / or liquid co-injection.

Fig.7 is a schematic representation of a chair segment with a honeycomb structure, using high-strength special composition composites, which use the following designations: (8) - the main body of the article, (14) - the surface of the cellular, cellular article.

Technical result of the invention

As shown by the composite tests performed, said compositions / compositions (see claims 1 to 19) have the following properties, different from known composites:

- the composites offered allow the products to be melted at temperatures up to + 80-85 degrees Celsius in hot forms, whereby the crystallization of materials starts at +125130 ° C, thus reducing production cycle speed and resource consumption / for comparison, polypropylene and polyethylene are traditionally max + 30 ° C in hot molds and their cooling time is significantly longer than organic fiber filled composites /;

- the offered composites provide the possibility to obtain thicker product walls / 6-8 mm / without loss of production speed compared to the casting speed of thin wall / 3-5 mm / polypropylene or polyethylene plastics products;

- the offered composites provide products with high physical-mechanical properties of the material, which are 2-2.5 times higher than those of most polypropylene and polyethylene materials.

The proposed composite compositions are characterized by:

- that they have an increased proportion of organic fibers in special proportions, together with additives, the composition of which, to a lesser extent, limits the use of gas or gas-water injection in the manufacture of articles;

- that most of them are biodegradable when they enter the soil;

- that they have increased strength due to the composition of the composites.

Possibilities of Use of the Invention

The products obtained by the use of said compositions A) and techniques B) C) are but are not limited to the following:

- tare pallets (Fig. 4) having a hollow rib configuration and configuration obtained by gas-liquid co-injection, thereby reducing the article weight and increasing its durability by using said compositions;

- chairs with a honeycomb design (Fig.7), which, due to the honeycomb structure and composition of the composite, produce articles with increased strength;

- tare boxes (Fig. 5) with a structured arrangement of empty channels which serve as reinforcing ribs and improve the ergonomics of the handles;

- cable spools (Fig. 6) with their segmental solution, as well as with strong ribs obtained by means of empty ducts.

All of the aforesaid articles were prepared using compositions in which cellulose and / or vegetable fibers were combined with synthetic polymeric fibers and / or granules and / or powders. In addition, a variety of compositions of thermosetting plastics and polymer recycled products and fibers have been used as the starting material (matrix) for their manufacture, not only those described in the present invention.

While coloring agents may and may not use dyes or crystal crystallizers of the Mold Perfect type, the coloring agents enhance the visual properties of the product, whereas the Crystal Perfect crystallizer causes the composite to crystallize at comparatively higher temperatures. such as PET, increases the physico-mechanical strength of articles, including impact resistance, to the extent to which these materials, in themselves, exhibit higher physico-mechanical properties than PE, PP and natural fiber materials. In addition, high-radiation treated fibers are difficult to melt, but PET has a yield point of + 220-230 ° C, which is 40-60 ° C higher than the composite yield point. As a result, reinforcement of the composite with the given fibers takes place, because reinforcement of the fiber alone does not significantly improve the physico-mechanical properties of the material and at high (above 35%) filling degree it even significantly reduces impact and bending parameters. In addition, the said fibers may completely or partially replace the use of flax, sisal, hemp and other such fibers in the said composites by the use of wood fibers, straw and the like. lower cost fiber.

Claims

Claims (23)

1. A composition for the manufacture of chairs and other heavy duty articles, comprising: - 40% to 60% polypropylene, - between 10% and 30% by weight of flax or hemp or sisal or similar fibers, or any combination thereof, - 5 to 10% for nanomaterials / clay particles, - 15% to 25% of fine fiber or bamboo or rice shells, - high-emissivity polyethylene or polypropylene fibers, including colored fibers, cut between 6 and 40 mm in length, between 4% and 25%, - Crystallization additives of the Mold Perfect type, various additives traditionally used in the plastics industry, such as moisture absorbers, flame retardants, antibacterial agents, etc., but not optional, and binders other than%, - the use of this composition results in a composite material with the following guaranteed physical and mechanical properties: bending modulus - not less than 4400 MPa, impact modulus - not less than 34 MPa. 2. A composition for the manufacture of chairs and other heavy duty articles, comprising: - polypropylene 30-40%; - flax or hemp or sisal or other similar fibers or combinations thereof: 20-25%; - fine wood fiber or bamboo fiber or rice shells - 15-20%; - high-density polyethylene or polypropylene fibers, also colored, cut from 6 to 40 mm in length, 10 to 25%; - dressing additives -1-3%; - coloring additives - 1-3%; - additives which cause the bacterial degradation of polypropylene by 1-2% in the soil; - miscellaneous supplements - other%. 3. A composition for the manufacture of chairs and other heavy duty articles, comprising: - polypropylene 40-60%; - flax or hemp, or sisal, or other similar fibers, or a combination of these, 20-30%; - fine wood fiber or bamboo fiber or rice shells - 4-15%; - Polyethylene or polypropylene fibers treated with strong radiation, whether or not colored, cut to a length of 6-40 mm - 10-25%; - dressing additives - 1-3%; - coloring additives - 1-3%; - additives which cause the bacterial degradation of polypropylene by 1-2% in the soil; - miscellaneous supplements - other%, at which - the use of this composition results in a composite material with the following guaranteed physical and mechanical properties: bending modulus - not less than 4200 MPa, impact modulus - not less than 30 MPa. 4. A composition comprising: - polypropylene 40-60%; - flax or hemp, or sisal, or any combination thereof, 20-30%; - fine wood fiber or bamboo fiber or rice shells - 4-15%; - Polyethylene or polypropylene fibers treated with strong radiation, whether or not colored, cut to a length of 6-40 mm - 10-25%; - fiberglass cut from 4 to 20 mm in length - 3-8% - dressing additives - 1-3%; - coloring additives - 1-3%; - additives which cause the bacterial degradation of polypropylene by 1-2% in the soil; - miscellaneous supplements - other%, at which - the use of this composition results in a composite material with the following guaranteed physical and mechanical properties: bending modulus - not less than 4600 MPa, impact modulus - not less than 36 MPa. 5. A composition comprising: - polypropylene 40-60%; - flax or hemp, or sisal, or any combination thereof, 20-30%; - fine wood fiber or bamboo fiber or rice shells - 4-25%; - Polyethylene or polypropylene fibers treated with strong radiation, whether or not colored, cut to a length of 6-40 mm - 10-25%; - dressing additives - 1-3%; - coloring additives - 1-3%; - additives which cause the bacterial degradation of polypropylene by 1-2% in the soil; - miscellaneous supplements - other%, at which - the use of this composition results in a composite material with the following guaranteed physical and mechanical properties: bending modulus of not less than 4400 MPa, impact modulus of not less than 32 MPa, 6. A composition comprising: - polypropylene 40-60%; - flax or hemp, or sisal, or any combination thereof, 20-30%; - fine wood fiber or bamboo fiber or rice shells - 4-15%; - fiberglass, cut 4-20 mm long - 5-20% - dressing additives - 1-3%; - coloring additives - 1-3%; - additives which cause the bacterial degradation of polypropylene by 1-2% in the soil; - miscellaneous supplements - other%, at which - the use of this composition results in a composite material with the following guaranteed physical and mechanical properties: bending modulus - not less than 4600 MPa. impact modulus - not less than 34 MPa. 7. A composition comprising: - any type of biopolymer with high mechanical properties -10-60%; - polypropylene 10-30% - flax or hemp, or sisal, or any combination thereof, 20-30%; - fine wood fiber or bamboo fiber or rice shells - 4-15%; - fiberglass cut 4-20 mm in length, 3-20% - dressing additives - 1-3%; - coloring additives - 1-3%; - additives which cause the bacterial degradation of polypropylene by 1-2% in the soil; - miscellaneous supplements - other%, at which - the use of this composition results in a composite material with the following guaranteed physical and mechanical properties: bending modulus - not less than 3900 MPa, impact modulus - not less than 30 MPa. Composition according to any one of claims 2 to 7, containing, as an additive, various additives conventionally used in the plastics industry, such as moisture absorbers, including starch based absorbents, lubricants, fire retardants, antibacterial agents and the like. The composition of any one of claims 1 to 7, which provides the following: - Melting products at + 80 / + 85 degrees Celsius in hot molds, thus reducing production cycle speed and resources by adding polymer crystallizers such as Mold Perfect Crystallizers; - obtain thicker product walls / 6-8 mm / without loss of production speed compared to thin wall / 3-5 mm / polypropylene, polyethylene plastic product casting cycle speed; - to provide high physical-mechanical properties of the material, which are 2-2.5 times higher than those of polypropylene, polyethylene materials. 10. A composition for making pallets, boxes, cable reels and other bulky articles comprising: - polypropylene or polyethylene including recycled 35-60% - flax or hemp or sisal or any combination of these, -10-15%; - fine wood fiber or bamboo fiber or rice shells - 20-30%; - Polyethylene or polypropylene filaments, high-radiant, also colored, cut into lengths between 6 and 40 mm, 10 to 20% - polymer crystallization additives - 1 -2%; - dressing additives - 1-3%; - additional supplements - other%. 11. A composition comprising: - polypropylene or polyethylene, including recycling - 35-60%; - flax or hemp, or sisal, or any other fiber of the same type, or any combination thereof - 10-15%; - fine wood fiber or cane or rice hulls or crushed straw 20-30%; - PET fibers, whether or not colored, cut to length between 6-40 mm and -10-20%; - polymer crystallization additives - 1-2%; - dressing additives - 1-3%; - supplements, but not necessarily the remaining%. 12. A composition comprising: - polypropylene or polyethylene, including recycling - 35-60%; - fine wood fiber or cane or rice shells, or chopped straw 25-40%; - PET fibers, also colored, cut to 6-40 mm length -10-20%; - Mold Perfect type polymer crystallization additives -1-2%; - dressing additives - 1-3%; - supplements, but not necessarily the remaining%. 13. A composition comprising: - polypropylene or polyethylene, including recycling - 35-60%; - fine wood fiber or cane or rice hulls or crushed straw 25-40%; - Strongly irradiated polyethylene or polypropylene fibers, whether or not colored, cut to length between 6 and 40 mm - 10 to 20%; - Mold Perfect type crystallization additives - 1-2%; - dressing additives - 1-3%; - supplements, but not necessarily the remaining%. Composition according to any one of claims 10 to 13, containing nanofibres, including nanomaterials, and / or mineral fillers as additives, as well as various additives conventionally used in the plastics industry, such as dyes, moisture absorbers, fire retardants, antibacterial agents, starches. , as well as lubricants, etc., as well as additives that cause the degradation of polypropylene / polyethylene by bacteria upon contact of the product with the soil. A composition according to any one of claims 10 to 13 which replaces polypropylene or polyethylene with any other commonly used plastics having a melting point below +190 ° C and which additionally contains mineral fillers and various additives conventionally used in the plastics industry, such as dyes, humectants, flame retardants, antibacterial agents, lubricants, etc. A composition according to any one of claims 10 to 15, wherein the PET fibers are replaced with any other meltable fibers, including plastic or mineral fibers, above 200 ° C, and which additionally contain mineral fillers and various additives conventionally used in the plastics industry, such as dyes, humectants, flame retardants, antibacterial agents, lubricants, etc. A composition according to any one of claims 10 to 10. 16, wherein the volume of the composite matrix is increased by a percentage and the amount of filler is reduced by the same amount. A composition according to any one of claims 10 to 10. Item 17, wherein natural rubber is added to the composite at the expense of volume change of matrix, or expense of fillers, to increase the impact resistance of the articles. The composition according to any one of claims 10 to 18, wherein the natural mineral dye in powder form is added to the composite as a colorant, thereby further accelerating the crystallization process of the composite during the manufacture of articles. 20. A process for the production of articles using any one of the preceding claims 1 to 19, characterized in that the articles are molded by means of a plastic injection molding process (Fig. 2), according to the following steps: - in the first stage, the articles are manufactured using conventional plastic injection molding techniques in a two-part or multi-part injection, whereby the heated mass of the composite is injected at a temperature between +160 and +190 ° C (depending on the type of composite matrix) until the mold is filled; - in the second step, the mold is cooled; - in the third step, when the cooled composite has already crystallized on the mold walls, a channeling cycle is initiated by injecting a small amount of heated plastic into the strength channels of the gas or gas-liquid injection products; - in the fourth stage, a small amount of gas is injected; - in the fifth step, the fluid is injected at a pressure of 200-600 atmospheres (depending on the nature of the article and the length of the strength channels), which pushes the non-crystallized part of the composite through the channel and discharges the excess composite into a specially designed container; - in a sixth step, the gas is re-injected to remove the fluid in the ducts; - in the seventh step, the article mold is further cooled until the article has cooled to + 30 / + 80 ° C (depending on the composite composition of the article), the mold is opened, the article is removed and the next production cycle is initiated. A method of manufacturing an article using any of the aforementioned compositions as set forth in claims 1 to 19, characterized in that the article is molded in a plastic injection molding process (Fig. 2) by the following steps: - in the first step, the preform is manufactured using one of the traditional plastic injection molding techniques in a two-part or multi-part mold, injecting a heated composite mass at a temperature between +160 and + 190 ° C (depending on the type of composite matrix) with the pressure required to fill the mold; - in the second step, the mold is cooled; - in the third stage, when the quenching composite has already crystallized at the mold walls, a channeling cycle is initiated by injecting gas at a pressure of 200-600 atmospheres (depending on the nature of the product and the length of the strength channels). the forward and excess composite is discharged into a specially designed shaped container; - in the fourth step, the article mold is further cooled until the article mold has cooled from +30 to +85 ° C (depending on the composite composition of the article), the mold is opened, the article is removed and the next production cycle begins. Use of a method of manufacturing articles according to claim 20 or 21 to result in articles which do not have hollow channels. Use of a method of manufacturing articles according to claim 20 or 21, to obtain articles having a complicated configuration and relatively long hollow ribs (Fig.2, Fig.3, Fig.4, Fig.5, Fig.6). , whereby the inner surface of the product hollow channels is obtained without pores.