METHOD FOR THE MANUFACTURE OF RAW MATERIALS FOR THE PRODUCTION OF SHOES, IN WHICH THE RAW MATERIALS ARE DERIVED FROM BATCHES OF RECYCLED SHOES

Abstract

The present invention relates to a process referred to in the opening of Claim 1. In the footwear industry, there is an increasing need for sustainable production processes and the reuse of materials. However, shoe recycling presents a challenge due to the complex composition of the various materials used in shoes. Existing recycling processes are often unable to effectively separate the different materials with high purity. The invention solves this problem by providing an innovative method for recycling shoes, whereby various fractions of high purity are obtained. These fractions can subsequently be processed into high-quality raw materials for the production of new shoes.

Description

The present invention relates to a process according to the introduction of conclusion 1. In the footwear industry, there is an increasing need for sustainable production processes and the reuse of materials. The recycling of shoes forms however a challenge due to the complex composition of various materials that are used in shoes. Existing recycling processes are often unable to Effectively separate various materials with high purity. The invention solves this problem by providing an innovative method for the recycling of shoes, in which various fractions with high purity are obtained. These fractions can subsequently be processed into high-quality raw materials. for the production of new shoes. To that end, the process according to the invention has the characteristic that the process is intermediate step 1a) between step 1) and step 2) comprises: step 1a) sorting the shoes to be recycled by shoe type and / or brand in different batches. Sorting the shoes to be recycled into batches based on shoe type and / or brand prior to processing makes for a more efficient and more targeted recycling possible, resulting in higher quality fractions. The table below shows which materials are used for each part of the shoe. become: Overview _____ _____ The first column lists the shoe parts, such as Outsole, MidSole, Insole, and Upper. Outsole This is the bottom layer of the shoe that comes into direct contact with the ground. Midsole This layer is located between the outsole and the insole and often provides cushioning. and comfort. insole - Insole This is the inside of the shoe on which the foot rests. It is also known as the footbed. named. Upper - Upper leather or shoe upper This refers to the entire upper part of the shoe that covers and encloses the foot. The abbreviations for the materials are explained below. EVA (Ethylene vinyl acetate): EVA is a synthetic material that is widely used for soles. It is lightweight, resilient and offers good cushioning. EVA soles are durable, wear-resistant, and flexible, allowing them to follow the natural movement of the foot. SBR (Styrene-butadiene rubber): This is a type of synthetic rubber that is often used in shoe soles because of its durability and wear resistance. ETPU (Expanded Thermoplastic Polyurethane): A lightweight, elastic material often used in sports shoes for cushioning and energy recovery. PA (Polyamide): Also known as nylon, this material is often used in the uppers of shoes. because of its strength and durability. NBR (Nitrile butadiene rubber): A synthetic rubber that is oil- and fuel-resistant, often used in work shoes. PVC (Polyvinylchloride): A versatile plastic used in various parts of shoes, especially in waterproof or weather-resistant models. TPU (Thermoplastic Polyurethane): A flexible, wear-resistant material that is often used in soles and other shoe parts that require sustainability. PU (Polyurethane): A versatile material that is used in both soles and uppers of shoes. TPE (Thermoplastic Elastomer): TPE is a versatile material that combines properties of both rubber and plastic: TPE is often used in applications such as shoe soles, handles, and medical equipment PP (Polypropylene): PP is a thermoplastic polymer: It is stiffer and harder than TPE, but still relatively lightweight. By pre-sorting by shoe type or shoe brand, it is possible to use the right shoe recycling process to obtain a foam and / or rubber fraction with a high purity, such as: - a foam fraction consisting solely of: EVA or ETPU or PU - a rubber fraction consisting solely of: SBR or NBR or TPR. Materials that can exist both as foam and in non-foamed form (rubber-like) prevent 1. TPU (Thermoplastic Polyurethane) TPU can be used in both solid and foamed form. 2. ETPU (Expanded Thermoplastic Polyurethane) ETPU is a foamed version of TPU and is therefore considered foam. The other materials are officially not foam or rubber, but can be, through the right the recycling process must be sorted as such. Preferably, in step 1) a process is selected that yields fractions of foam, rubber, textiles, leather, each with a high purity or homogeneity of at least 80%, preferably above 90%, and in particular above 95%. By producing fractions with high purity (SO-95%), it becomes recycling process significantly more efficient: Pure fractions can thereby be converted into high-quality recycled materials that are better suited for reuse in new products. Moreover, pure recycled materials have a broader application area and can be used more frequently as a replacement for virgin materials. Pure material fractions generally have a higher market value than mixed or contaminated streams. It reduces the need for further purification steps, which can reduce total recycling costs. By focusing on high purity already in the first step, the entire Recycling process optimized. This differs from conventional methods that often only in pursue purification in later stages. This early focus on purity can lead to a reduced need for energy-intensive purification steps later in the process and the possibility to apply more advanced recycling techniques to purer fractions. In a first embodiment of the method according to the invention, the procedure the further steps: step 3) extruding the foam fraction from step 2) into a foam ribbon in an extruder; step 4) allowing the foam ribbon to cool down; step 5) pelletizing the foam ribbon into foam pellets. An extruder makes it possible to continuously ventilate the foam fraction, which results in an efficient and uninterrupted production process. After leaving the extruder, the foam ribbon is cooled in a controlled manner. This is a critical step because this stabilizes the structure of the foam, deformation loss of the material is prevented and the veneerability for the next step improves. In this final step, the cooled foam ribbon is pressed into pellets. In doing so, the ribbon cut into small, uniform pieces. The size of the pellets is optimized for further processing. This format makes it easy to to dose and mix material for future use. Preferably, the foam fraction in an extruder is treated under the following specific conditions, where the temperature lies between 130 and 260 °C and a pressure prevails in the extruder of 20-75 bar. These parameters are crucial for the successful veneering of the foam. The high temperature causes the foam to melt and become liquid, while the pressure helps in mixing and homogenizing the material. Prior to the extrusion process, the foam fraction can be pulverized. This is particularly important if the foam fraction includes elastic foam particles Foam particles cause problems in the extruder. By first powdering, there are no longer any elastic particles in the foam fraction. With this, the homogeneity of the foam material is increased and leads to better processing in the extruder. Preferably, for the first implementation of the method, according to the invention in step 3) during extrusion unused or new foam on the extruder in a a predetermined ratio is added. This can help to: - to improve the quality of the final product - to achieve specific properties (for example density or elasticity) - to compensate for any degradation of the recycled foam material. Preferably, the unused or new foam is of the same type of foam as the foam fraction that the process has yielded. In a second embodiment of the method according to the invention, the procedure the further steps: step 6) extruding the rubber fraction from step 2) into a rubber ribbon in an extruder where the temperature of the rubber fraction lies between 130 and 260 °C and the rubber fraction is under a pressure of 150-300 bar, such that the rubber fraction during extrusion devulcanizes. step 7) allowing the rubber tape to cool down; step 8) pelletizing the rubber ribbon into rubber pellets; The rubber fraction is processed in an extruder under the following specific conditions in which the temperature lies between 130 and 260 °C and pressure prevails in the extruder from 150-300 bar. These parameters are crucial for the successful processing of the rubber: The high temperature and pressure cause devulcanization of the rubber. Devulcanization is the process in which the sulfur bridges between the polymer chains are broken, making the rubber reusable. Preferably, for the second implementation of the method, according to the invention in step 6) during extrusion unused or new rubber on the extruder in a predetermined ratio added. This can help to: - to improve the quality of the final product - to achieve specific properties (for example density or elasticity) - to compensate for any degradation of the recycled rubber material. Preferably, the unused or new rubber is of the same type of rubber as the rubber fraction that the process has yielded. The table below describes various compounds (compounds) materials) that are produced from recycled shoes, together with the percentages of recycled and new materials that are used. Pcst ccnsumer Percentage Added Materials Percentage Materials EVA 29.5% up to98% Virgin EVA ?Ü.5% up to2% EVA 29.5% up to98% Green EVA ?Ü.5% LI p to2% TPU 29.5% up to98% Virgin TPU ?Ü.5% up to2% PA 29.5% up to98% Virgin PA ?Ü.5%upto2% eTPU 29.5% up to98% Virgin eTPU T&E-% up to2% TPEIPP 29.5% upm98% Virgin TPEIPP ?I}.5%uptc2% NBR 29.5% up to98% Virgin NBR ?Ü.5% up to2% SBR 29.5% up to98% Virgin SBR ?l}.5%uptc2% PVC 29.5% up to98% Virgin PVC ?Ü.5% up to2% The table shows nine different compounds: EVA, TPU, PA, eTPU, TPE / PP, NBR, SBR and PVC. Three columns are shown for each compound: 1) Post-consumer Materials Percentage: This is the percentage of recycled foam or rubber material from used shoes. 2) Added Materials: This is the added new or unused material. 3) Added Materials Percentage: This is the percentage of new (virgin) material that is being added. The same range of percentages applies to all compounds: The recycled material varies from 29.5% to 98%. The added new material varies complementaryly from 70.5% to 2%. This means that the compounds can be formulated flexibly, depending on the desired properties and quality of the final product. For EVA, two options are provided: one with regular virgin EVA and one with "Green EVA" as added material. This table illustrates the flexibility of the recycling process, where a high percentage of recycled material can be used (up to 98%), but also the possibility exists to add more new material if necessary for specific applications or quality requirements. This aligns with the previously discussed importance of being able to add of new materials in the recycling process. In a third embodiment of the method according to the invention, the procedure the further steps: step 9) opening up the textile fraction, whereby the textile fraction by means of needles are pulled apart; step 10) the fiberization of the lifted textile fraction from step 9); step 11) removing contamination from the fibers from step 10); step 12) making a wick from the cleaned fibers from step 11); step 13) spinning yarn from the roving of step 12) with a predetermined thickness; In step 9), the textile fraction is pulled apart using needles. This The aim of the process is to untangle and loosen fibers, any knots or to separate clumped parts and prepare the fibers for further processing. After pulling open, the fibers are further separated in step 10). This process separates the individual fibers, removes any remaining knots or clumps and creates a more homogeneous fiber mass. In step 11), impurities are removed from the fibers. This may include: - the removal of non-textile particles - separating different fiber types if necessary - removing dust and other small contaminants The cleaned fibers are then bent into a wick in step 12). Fluff is a loose, unspun strand of fibers. This process: - Align the fibers in one direction - Creates a continuous strand of fibers - Prepares the material for the spinning process Finally, in step 13), the wick is spun into yarn with a predetermined thickness. This includes: - Further stretching and twisting of the fibers - Creating a continuous thread with the desired thickness - Winding the yarn onto bobbins Preferably, in the third implementation of the method according to the invention step 11) the next follow-up step: - step 11a) adding recycled textiles and / or polyester obtained from other process; The purpose of this is to: - To improve the quality of the final product - To achieve specific properties - To increase the amount of usable material The above-mentioned steps guarantee high-quality recycling. The procedure makes it possible to recycle textiles into new yarns, which is a high-quality form is of reuse. Due to the possibility of adding recycled material, the The quality and composition of the final product are adjusted. Recycling textile fibers reduces the environmental damage resulting from the extraction of raw materials and processing into new textile fibers. The method contributes to a more circular textile industry by reusing used materials in the production chain This detailed marking of the textile fraction enables one to to produce high-quality recycled yarns that can be used in new textile products, including possibly new shoes. This contributes to a more sustainable and circular approach in the textile and footwear industry. In a fourth embodiment of the method according to the invention, the procedure the further steps: step 14) the pulverization of the leather fraction; step 15) sifting the powdered leather fraction from step 14); step 16) mixing the sifted and powdered leather fraction from step 15) with a binder into a leather mixture; step 17) rolling and crushing the leather mixture from step 16); step 18) cutting the rolled coils from step 2a-12) into sheets of leather. In step 14), the leather fraction is pulverized into a fine powder. This process has as goal to reduce the learning particles to a venerable size, so that a homogeneous material is created for further processing. Next, the leather powder is sieved in step 15. This process ensures that the learning particles have a uniform particle size. In addition, any larger pieces are or impurities are removed from the leather powder. This results in consistent quality. of the leather powder for further processing. Next, in step 16), the sifted leather powder is mixed with a binder to form a learning mixture. This step is crucial because: - the binder attaches the learning particles together - it improves the formability of the material - it affects the properties of the end product (for example flexibility or courage. The leather mixture is then rolled and crushed in step 17). This process distributes the leather mixture evenly and creates a consistent thickness. As a result, the structural integrity of the material improved. Finally, in step 19), the rolled coils are cut into sheets of leather. This results in: - usable formats for further applications - standardization of the final product - easier recognition in subsequent processes This method for identifying the learning fraction offers several advantages: Material reuse: Recycled leather from old shoes can be reused used, which contributes to a circular economy. Flexibility in properties: Due to the choice of binder and the venNerking, the properties of the final product are adjusted. Efficient venNerking: The process enables large-scale venNerking of recycled learn possible. Versatility in applications: The resulting learning sheets can be used in various products, possibly including new shoes or other member products. Waste reduction: By recycling leather, the amount of waste is reduced and the life cycle of the material extended. This processing of the leather fraction contributes to a more sustainable and circular approach in the member leather industry, whereby used leather can be converted into new, usable materials. In a fifth and final embodiment of the method according to the The invention includes the method and the further steps: step 19) heating the collected fiber fraction; Step 20) pelletizing the heated fiber fraction from step 19). In step 19), the collected fiber fraction is heated. This process has various goals: - Removing moisture: Heating helps to remove any remaining moisture from the fibers remove, which is important for further venNerking. - Softening of the glue: The glue present in the fiber fraction is softened by the heating softer, which facilitates further fencing. - Preparing for pelletization: Heating makes the fibers and the glue more plastic, which is beneficial for the pelletizing process. After heating, the fiber fraction is pelletized in step 20). This process includes: - Compression: The heated fibers are compressed in a pelletizing machine. - Formation: Due to the combination of pressure and the previously applied heat, the fibers and the glue bound together into small, solid pellets. - Cooling: After pressing, the pellets are cooled to retain their shape. This method offers several advantages: it enables material recycling. significantly reduces the volume of the fiber fraction that might otherwise be considered waste. for easier storage and transport, creates uniform pellets for easier processing and dosing, and retains certain properties of the original material by mixing fibers and glue together. The produced pellets from the fiber fraction can potentially be used in various applications, such as filler material in new shoe soles or other shoe parts, in the production of composite materials, as raw material for thermoplastic products, or even as fuel in industrial processes due to the presence of fibers and polymers (glue). This method for the Processing the fiber fraction with glue contributes to a more circular approach in the shoe industry, where even difficult-to-separate materials can become useful reused The described methods for the cleaning of the various fractions (foam, rubber, textiles, and leather) offer an innovative and sustainable approach to reuse from materials from old shoes. By means of advanced techniques such as Through extrusion, pelletization, and devulcanization, high-quality raw materials are produced. which not only contribute to a circular economy, but also the ecological impact of reduce the shoe industry. These processes make it possible to waste transform into valuable products, thereby extending the life cycle of materials extended and new opportunities arise for sustainable production. The result is a efficient and effective way to reuse recycled materials, which is not benefits not only the industry, but also the environment and society as entirely Selecting the appropriate recycling process in step 1) is crucial for the obtaining fractions with high homogeneity. The chosen process must be set up. to separate shoes and / or shoe parts into fractions of foam, rubber, textile and leather, each with a high purity or homogeneity of at least 95%. This high degree of purity is important for several reasons: - Quality of recycled materials: Pure fractions lead to high-quality recycled materials suitable for use in new products, possibly even in new shoes. - Efficiency of subsequent processes: Homogeneous fractions simplify further processing, such as extrusion or pelletizing, which leads to a more efficient recycling process. - Value of recycled materials: Pure fractions generally have a higher market value, which improves the economic feasibility of the recycling process. - Applicability: The purer the fractions, the wider the range of possible applications for the recycled materials. - Environmental benefits: By enabling high-quality recycling, the need is reduced in new raw materials and extended the life cycle of materials. By focusing on a recycling process that produces fractions with high homogeneity yields, the foundation is laid for an effective circular economy in the footwear industry, where materials retain their value and can be reused be used in high-quality applications. The addition of new materials during the recycling process, as described above described is an important aspect of the invention. This has several advantages: - Quality improvement: By adding new material, the quality of the recycled product are improved or optimized. This is especially important when the processing of the foam and rubber fractions, where the addition of new material is explicitly mentioned. - Modification of properties: Mixing in new material makes the possible to accurately tailor the properties of the end product to the desired application. This increases the applicability of the recycled material. - Compensation for degradation: Recycled material can after multiple cycles of use and recycling deteriorate in quality. The addition of new material can compensate for this degradation and extend the lifespan of the material. - Improvement of veneerability: In some cases, the addition of new may material improve the processability of the recycled material, which the makes the production process more efficient. - Market acceptance: Products made from a mixture of recycled and new materials can sometimes be better accepted in the market because they combining the benefits of both. The invention is naturally not limited to the described 5 preferred forms of execution, but extends to any form of execution that falls within the scope of the extent of protection, as defined in the claims and viewed in the light of the preceding description.

Claims

1. , comprising the following steps: step 1) selecting a process for recycling shoes and / or shoe parts, in which the process is set up to veneer shoes and / or shoe parts to at least fractions of foam, rubber, textile, leather and a remaining fraction of fibers with glue (fluff); step 2) processing each batch of shoes separately using the selected process from step 1) to foam, rubber, textile, leather fractions; characterized in that the method includes an intermediate step 1a) between step 1) and step 2): step 1a) sorting the shoes to be recycled by shoe type and / or brand in different batches.

2. Method according to conclusion 1, in which in step 1) the process yields fractions of foam, rubber, textiles, leather, each with a high purity or homogeneity of at least 80%, in the special 95%.

3. Method in accordance with conclusion 1 or 2, whereby the method comprises the further steps: step 3) extruding the foam fraction step 2) into a foam ribbon in an extruder; step 4) allowing the foam ribbon to cool down; step 5) pelletizing the foam ribbon into foam pellets; 4. Method according to conclusion 3, in which in step 3) the temperature of the foam fraction lies between 130 and 260 °C and the foam fraction is under a pressure of 20-75 bar.

5. Method according to conclusion 3 or 4, in which the method is an intermediate step 2a) between step 2) and step 3) includes: step 2a) powdering the foam fraction.

6. Method according to conclusion 3, 4 or 5, in which in step 3) during extrusion unused or new foam is fed to the extruder in a predetermined ratio added 7. Method in accordance with conclusion 1 or 2, whereby the method comprises the further steps: step 6) extruding the rubber fraction from step 2) into a rubber ribbon in an extruder where the temperature of the rubber fraction lies between 130 and 260 °C and the rubber fraction is under a pressure of 150-300 bar, such that the rubber fraction during extrusion devulcanizes. step 7) allowing the rubber tape to cool down; step 8) pelletizing the rubber ribbon into rubber pellets; 8. Method according to conclusion 7, in which in step 6) during extrusion unused or new rubber is added to the extruder in a predetermined ratio.

9. Method in accordance with conclusion 1 or 2, whereby the method comprises the further steps: step 9) pulling open the textile fraction, whereby the textile fraction is removed by means of needles is drawn together; step 10) the fiberization of the lifted textile fraction from step 9); step 11) removing contamination from the fibers from step 10); step 12) making a wick from the cleaned fibers from step 11); step 13) spinning yarn from the roving of step 12) to a predetermined thickness; 10. Method according to conclusion 9, in which step 11) has the following follow-up step: step 11a) adding recycled textiles and / or polyester obtained from another process; 11. Method in accordance with conclusion 1 or 2, whereby the method comprises the further steps: step 14) the pulverization of the leather fraction; step 15) sifting the powdered leather fraction from step 14); step 16) mixing the sifted and powdered leather fraction from step 15) with a binder into a leather mixture; step 17) rolling and crushing the leather mixture from step 16); step 18) cutting the rolled coils from step 2a-12) into sheets of leather.

12. Method in accordance with conclusion 1 or 2, whereby the method comprises the further steps: step 19) heating the collected fiber fraction; step 20) pelletizing the heated fiber fraction from step 19). PORT CONCERNING RESEARCH INTO THE STATE OF THE ART Patent application 2038967 1 1 classification of the subject : Investigated areas of technology : D35 / 00; A43B1 / 00; B07C5 / 34; B29B17 / 00 B29D; A43B; B07C; B29B PC files: Scope of the investigation: DOC, WPI Incomplete um of the investigated conclusions: Uninvestigated conclusions: October 2024 3-12: non-unit Relevant literature 2 Citation of literature with indication, where necessary, of relevance to gory conclusion(s) of text passages or figures of particular importance X US 2007 / 0202288 A (GEARIN PATRICIA M) August 30, 2007 1, 2 * figure 1; paragraphs [0015] – [0018], [0028] – [0047] * – – – A CN 116619624 A (PUTIAN DAKAI NEW MAT CO LTD) 1 August 22, 2023 * machine translation page 2, lines 37 – 44 and page 6, lines 9 - 22 * – – – A US 2008 / 0111263 A (WANG MING-HUI) May 15, 2008 1 * figures 1, 2; paragraph [0010] * – – – – – Date on which the investigation was completed: The competent official: April 2025 ir. P. Gratessolle Netherlands Patent Office part of the Netherlands Enterprise Agency See explanation on the next page. direction: welding areas of engineering: defined according to International Patent Classification (IPC). Generosity of the cited literature: p state of T being of particular importance in itself: literature on theory or not published in time the technical principle underlying the invention in conjunction with other cited literature E: patent literature published on or after the filing a state of the art of particular importance date of the present application and of which the submission date or the priority date is before the something of importance belonging to category X or Y submission date of the present application being state of the art D: mentioned in the application referring to an unrecorded state of affairs e technique L: literature mentioned for other reasons literature published between priority and &: member of the same patent family; corresponding literature submission date APPENDIX Accompanying the Report on the State of the Art Survey Patent application 2038967 The appendix contains a list of patent applications or patents published elsewhere (so-called and of the same patent family), which correspond to patent specifications mentioned in the report. The statement has been compiled based on data from the computer file of the European severance agency as of April 1, 2025. The accuracy and completeness of this statement are neither guaranteed by the European Patent Office, nor guaranteed by the Netherlands Patent Office; the data are Provided for informational purposes. In the report mentioned Date of Corresponding Date of patent specification publication of patent specifications publication US 2007202288 A1 30-08-2007 CA 2562631 A1 10-11-2005 US 2009170697 A1 02-07-2009 WO 2005105400 A1 10-11-2005 CN 116619624 A 22-08-2023 (none) US 2008111263 A1 15-05-2008 (none) WRITTEN OPINION Patent application 2038967 Opening date: Priority date: October 2024 - 1 Applicant: classification of the subject : 9D35 / 00; A43B1 / 00; B07C5 / 34; B29B17 / 00 FastFeetGrinded BV The written opinion contains an explanation of the following sections: Part I Basis of the written opinion Part II Priority Part III Determination of novelty, inventiveness and industrial applicability not possible Part IV The application relates to more than one invention Part V Reasoned statement regarding novelty, inventiveness and industrial applicability Part VI Other cited documents Part VII Other defects Other comments Part VIII The competent official: ir. P. Gratessolle Netherlands Patent Office part of the Netherlands Enterprise Agency Defined according to International Patent Classification (IPC). Written Opinion Patent application 2038967 Part I Basis of the written opinion The written opinion was prepared on the basis of the conclusions submitted on 31 October 2024. Part III Determination of novelty, inventiveness and industrial applicability not possible The question of whether the invention in the application is new, inventive, and industrially applicable is not deals in this written opinion with regard to: the entire application Conclusions 3 - 12 that: this application or these claims relate to matter that does not concern an invention of any area of ​​technology and is therefore not patentable. this application or these claims relate to subject matter that is not patentable pursuant to Article 3 of the National Patent Act 1995. the description, figures or these conclusions are so unclear that it is not meaningful to to draft a written opinion. this conclusion finds insufficient support in the description, making it meaningless to to draft a written opinion. No prior art research was conducted for these conclusions. a meaningful written opinion could not be drafted because the sequence enumeration was not was available in the correct format, or was not available at all (WIPO ST25). a meaningful written opinion could not be drawn up without the tables regarding the sequence enumerations; or these tables were not available in electronic form. explanation: part IV. Part IV The application relates to more than one invention it has been established that the patent application relates to more than one invention. The state of the art research was conducted with regard to the following conclusions: all Conclusions 1, 2 explanation: Written Opinion Patent application 2038967 is there a single general inventive concept between the various inventions contained in claims, and thus of unity of invention, if there is a technical relationship between the inventions consisting of new and inventive common matter, which has a technical relationship consisting of the same or corresponding special technical measures. Claims 1-12 of the present patent application comprise the following common workshop consisting of the same technical measures: “a method for manufacturing raw materials for the production of shoes” according to claim 1. This common matter is already known from the state of the art (see section V), as a result of which this subject matter is not the only provides a common inventive concept that connects the various inventions. The following groups of inventions can subsequently be distinguished:  independent conclusion 1 and dependent conclusion 2, hereinafter referred to as the first group, comprising the other technical measures ensuring that the shoes and / or shoe parts are processed into the fractions of foam, rubber, textile, leather, each with a high purity or homogeneity of at least 80%. These other technical measures have as a technical effect that high-quality recycled materials are obtained, which are better suited for reuse in new products (see page 3, lines 22 – 34 of the present patent application).  dependent conclusions 3 - 6, hereinafter referred to as the second group, comprising the remainder technical measures that the method includes the further steps of the in an extruder extruding the foam fraction into a foam ribbon, allowing the foam ribbon to cool, and the pelletizing the foam ribbon into foam pellets. These other technical measures implement a further procedure to further process the foam fraction.  dependent claims 7 - 8, hereinafter referred to as the third group, comprising the remaining technical measures for extruding the rubber fraction into a rubber ribbon in an extruder in such a way that the rubber fraction devulcanizes during extrusion, and pelletizes it after cooling from rubber ribbon to rubber pellets. These other technical measures implement a further procedure for further processing the rubber fraction.  dependent conclusions 9 - 10, hereinafter referred to as the fourth group, comprising the remainder technical measures for opening up the textile fraction, whereby the textile fraction is pulled apart by means of needles, the fiberization of the pulled-up textile fraction, the removing impurities from the fibers, making a wick from the cleaned fibers, and spinning yarn from the wick to a predetermined thickness. These other technical implement measures and a further procedure to further process the textile fraction.  dependent claim 11, hereinafter referred to as the fifth group, comprising the remaining technical measures for the pulverization of the leather fraction, the sieving of the pulverized leather fraction, the mixing of the sieved and powdered leather fraction with a binder to form a leather mixture, the rolling and rolling of the leather mixture, cutting the rolled rolls into sheets of leather. Written Opinion Patent application 2038967 These additional technical measures implement a further working method for the learning fraction to process further.  dependent claim 12, hereinafter referred to as the sixth group, comprising the remaining technical measures for heating the collected fiber fraction, and pelletizing the heated fiber fraction. These other technical measures implement a further working method to further process the fiber fraction. achieved technical effects and corresponding technical problems to be solved from the first to with the sixth group are different, as a result of which the remaining technical measures from the first to the sixth group constitute no corresponding technical measures and therefore no constitute common matter. Therefore, the mere general inventive concept is not being considered. shaft that connects the various inventions, whereby the first through sixth to show a lack of unity. Consequently, only the first group of conclusions mentioned is investigated. Part V Reasoned statement regarding novelty and inventiveness and industrial applicability Declaration Yourself Yes: conclusion(s) 2 No: conclusion(s) 1 ventivity Yes: conclusion(s) - No: conclusion(s) 2 Industrial applicability Yes: conclusion(s) 1, 2 No: conclusion(s) - Literature and commentary the report concerning the state of the art study become the following publications names: 1: US 2007 / 0202288 A (GEARIN PATRICIA M) August 30, 2007 2: CN 116619624 A (PUTIAN DAKAI NEW MAT CO LTD) August 22, 2023 3: US 2008 / 0111263 A (WANG MING-HUI) May 15, 2008 The discussion of document D2 below uses a machine translation. References to and citations from this document are references to and citations from the machine translation of this document. 1 Interpretation of conclusion 1 Conclusion 1 includes the measure that “in step 2) each batch of shoes through the selected process Written Opinion Patent application 2038967 step 1) is processed separately into fractions foam, rubber, textile, leather”. It is noted that It is not clear whether this measure requires that every batch be processed into all 4 mentioned actions, or that each batch is processed into at least one of the 4 mentioned fractions. It is it is not possible to process every batch of shoes into the 4 mentioned fractions, because not e batch shoes has the 4 mentioned material fractions (see, for example, the table on page rules 25–30 of the present patent application, from which it follows that running shoes generally and learn to include). This measure from Conclusion 1 is therefore interpreted as follows: “in step each batch of shoes is processed individually using the selected process from step 1) into in at least one of the fractions foam, rubber, textile or leather”. 2 Independent conclusion 1 discloses a method (see paragraphs [0028] – [0043], as well as figure 1) for the manufacture of raw materials for the production of shoes (“shredded categories of sorted raw materials” received from method step 3 as shown in figure 1 and described in paragraph [0041]), in which raw materials are derived from batches of recycled shoes (see [0034] – [0035], as well as step in figure 1), comprising the following steps: • step 1) selecting a process for recycling shoes and / or shoe parts in which the process is set up to process shoes and / or shoe parts into at least fractions of foam, rubber, textiles, leather and a remaining fraction of fibers with glue (selection of the “shredding” process footwear feedstock”, see paragraphs [0039] – [0043], as well as step 3 in Figure 1); • step 1a) sorting the shoes to be recycled by shoe type and / or brand into different batches (see paragraphs [0016] – [0018] and [0036] – [0038], as well as step 2 in Figure 1); • step 2) processing each batch of shoes separately (see paragraph [0041]) by means of the selected process from step 1) to at least one of the fractions foam, rubber, textile, leather (carrying out the process “shredding footwear feedstock”, see paragraphs [0039] – [0043], as well as step 3 in figure 1). Conclusion 1 is therefore not new compared to what is known from D1. 3 Conclusion 2 dependent on conclusion 1 Conclusion 2 depends on conclusion 1. The method according to conclusion 2 differs from the known method. D1 because in step 1) the process yields fractions of foam, rubber, textiles, leather, each with a high skin texture or homogeneity of at least 80%. After all, D1 does not reveal the purity of the actions. Conclusion 2 is therefore new. The technical effect of this differentiation measure is the obtaining high-quality recycled materials that are better suited for reuse in your products (see page 3, lines 22–34 of the present patent application). For a intermediate skilled professional in the field of methods for manufacturing raw materials for the production of shoes, starting from D1 and faced with the objective technical problem of more to obtain high-quality materials for the further production of shoes, it stands to reason to provide more pure fractions, in particular with a purity of at least 80%. Written Opinion Patent application 2038967 Moreover, a purification step is already performed in D1 on the obtained fractions (“metal “Institutes of footwear” are removed from the fractions, see paragraph [0047]). Conclusion 2 therefore shows no inventive activity with respect to what is known from D1 in combination general professional knowledge. 4 More distant state of the art and D3 each disclose a method for manufacturing raw materials for the production of shoes, in which the raw materials are derived from batches of recycled shoes (D2: page 2, gels 37 – 44; D3: see figures 1 and 2), the procedure comprising the sorting of those to be recycled shoes in different batches (D2: “target footwear” and “non-target shoes”, see page 6, lines 9 2; D3: “colors of the material”, see paragraph [0010]). Part VIII Other remarks The following remarks are made regarding the clarity of the conclusions: a conclusion that reveals multiple alternative measures, for example, interconnected or “of”, is anticipated by a state-of-the-art document that one of the discloses alternative measures. Sections beginning with the phrase "preferably" have no limiting influence on the scope of protection of the claim in which they are included. Such phrases are therefore disregarding the assessment of the novelty and inventiveness of the relevant claims ate.