Search

DE-102024132607-A1 - Method for manufacturing a plastic part, plastic part, plant for manufacturing a plastic part and recycling plant

DE102024132607A1DE 102024132607 A1DE102024132607 A1DE 102024132607A1DE-102024132607-A1

Abstract

A method for manufacturing a plastic part is proposed. The method comprises the following steps: • (S1) Generating a label, • (S2) Adapting a section (12) of an injection mold (20) to integrate the marking (12) onto the section (22) and • (S3) Injection molding of the plastic part into the injection mold, wherein the marking (12) is applied to a first surface (16) of the plastic part (100). The plastic part (100) contains at least one plastic component. The marking (12) represents coded origin information for the at least one plastic component.

Inventors

  • Sebastian Krull
  • Oliver Frisch
  • Christoph Heinz

Assignees

  • BAYERISCHE MOTOREN WERKE AKTIENGESELLSCHAFT

Dates

Publication Date
20260513
Application Date
20241108

Claims (12)

  1. A method for manufacturing a plastic part (100) comprising the following steps: • (S1) Generating a marking, • (S2) Adapting a section (22) of a provided injection mold (20) to integrate the marking (12) onto the section (22), and • (S3) Injection molding the plastic part in the injection mold (20), wherein the marking (12) is applied to a first surface (16) of the plastic part (100), whereby the plastic part (100) comprises at least one plastic, and whereby the marking (12) encodes origin information of the at least one plastic.
  2. Procedure according to Claim 1 , wherein the procedure comprises the following steps: • (S01) recording the origin information of the at least one plastic and • (S02) defining a coding scheme, wherein the marking (12) is generated based on the coding scheme and the recorded origin information.
  3. Method according to one of the preceding claims, in which the marking (12) is generated by computer and in which the origin information includes input data.
  4. Method according to one of the preceding claims, wherein the characterization further represents at least one production parameter of the plastic part (100).
  5. Method according to one of the preceding claims, wherein the origin information includes at least one recycled material information.
  6. Plastic part (100) for a vehicle, comprising at least one plastic, a first surface (16) and a second surface (14), wherein the first surface (16) has a marking (12) which encodes origin information of the at least one plastic and where the marking (12) is a 3D marking.
  7. plastic part (100) according to Claim 6 , wherein the plastic part (100) is produced according to a method according to one of the Claims 1 until 5 is manufactured.
  8. Plant (200) for the production of a plastic part (100), comprising an injection mold (20) which has a section (22) configured to apply a marking (12) to the plastic part (100) during injection molding, and a computer unit (24) which is configured to process input data (26), in particular origin information, and/or a coding scheme, for generating the marking (12).
  9. Annex (200) according to Claim 8 , wherein the system is configured to place a plastic part (100) according to one of the Claims 6 until 7 to produce and/or a process according to one of the Claims 1 until 5 to carry out.
  10. Annex (200) according to one of the Claims 8 until 9 , wherein the injection mold (20) is multi-part and/or wherein the section (22) of the injection mold (20) is interchangeable.
  11. Recycling plant for one plastic part (100) according to one of the Claims 6 until 7 , comprising a reading device which is configured to read the marking (12) of the plastic part (100), an evaluation unit which is configured to evaluate and in particular to decode the read marking (12), and a separation system which is robot-controlled and which is configured to separate the at least one plastic of the plastic part (100) based on the evaluated marking (12).
  12. A computer program product comprising instructions which, when executed by a computing unit, cause the computing unit to perform a procedure according to one of the Claims 1 until 5 to execute.

Description

The invention relates generally to the field of plastic parts. In particular, the invention relates to a method for manufacturing a plastic part, a plastic part, a plant for manufacturing a plastic part, a recycling plant, and a computer program product. Nowadays, environmental friendliness and sustainability are gaining increasing importance, which is why there is a growing emphasis on using recycled materials. Many components are already manufactured from recycled materials or are themselves recyclable. Both end consumers and authorities are expressing a growing desire to be able to assess the sustainability of products and components. However, it is currently difficult and imprecise to evaluate the degree of sustainability of a component. The object of the present invention is to at least partially overcome the disadvantages described above. In particular, the invention aims to provide an improved method for manufacturing a plastic part that makes it possible to reliably determine the sustainability of the plastic part. Furthermore, the invention aims to address the increasing interest of authorities in improved traceability of the materials used in the manufacture of plastic parts. The invention is defined in the independent claims. Advantageous embodiments of the invention are described in the dependent claims and the following description. A first aspect of the present disclosure relates to a method for manufacturing a plastic part. The method comprises the following steps: • Generating a label, • Adapting a section of a provided injection mold to integrate the marking onto the section and • Injection molding of the plastic part in the injection mold, whereby the marking is applied to a first surface of the plastic part. The plastic part contains at least one plastic component. It may also contain other materials, such as aluminum and/or steel. The marking provides coded information about the origin of the at least one plastic component. A manufacturing process for a plastic part, such as a headlight element, a door panel element, a support part, or a seal, is proposed. In a first process step, a marking is generated or created. This marking can, for example, encode information about the plastic, such as its origin, composition, or properties. To apply the marking to the finished plastic part, a section of the injection mold is modified so that the marking can be integrated directly into this mold section. This can be achieved, for example, by inserting an additional element with the marking or by redesigning the mold section itself. The section can be machined based on the generated marking. The injection mold can have several sections that are joined together to form the desired plastic part. One or more of these sections can be modified to incorporate the marking directly into the mold section. By modifying the injection mold section in this way, the marking can then be molded directly into the plastic part during injection molding and/or embossed or engraved into the plastic part, instead of having to be applied in a separate step. In the context of the present disclosure, the term “integrate” can be understood to mean that the marking is incorporated into or attached to the section. The plastic part can be injection molded in the prepared mold. The previously created or generated marking can then be applied directly to the first surface of the plastic part. This first surface can be a surface of the plastic part that is preferably visible in the finished part. Preferably, the marking is applied to a surface of the plastic part oriented in such a way that it can be read, for example, by a reading device. Preferably, the first surface is not a functional surface. Since the marking can have 3D shapes, it could impair the function of a functional surface. The finished plastic part can contain the marking on one of its surfaces, which encodes information about the plastic used. This allows origin information of the plastic to be permanently encoded on the component. The method for applying the marking to the plastic part can be easily integrated into existing injection molding processes. In the context of this disclosure, a marking can be a visual element, a machine-readable code, a logo, a graphic element, and/or a numerical code. The marking can be computer-generated. The marking preferably serves to codedly represent origin information of the at least one plastic component of the plastic part. This means that a decoded marking can directly reproduce the origin information of the plastic part. The marking can serve to identify or describe the plastic part, or to convey coded information about the plastic part. For example, the marking can also provide coded information for quality control. The origin information encoded by the marking can encompass various aspects. The marking can contain information about the origin of the plastic material used, such as details about the manufacturer, batch, or com