: PETG's recyclability aligns with growing sustainability concerns, offering eco-friendly alternatives to traditional plastics.

One of PETG's distinguishing features is its exceptional transparency, rivaling that of glass. This property, coupled with its inherent clarity and gloss, makes PETG an attractive choice for products where aesthetics play a crucial role. From cosmetic packaging to display cases, PETG's ability to showcase contents with pristine clarity adds value to various consumer products.

Feature papers are submitted upon individual invitation or recommendation by the scientific editors and must receive positive feedback from the reviewers.

In essence, PETG injection molding transcends mere manufacturing processes, embodying a testament to human ingenuity and technological prowess. As we navigate the complexities of the modern world, PETG stands as a beacon of possibility, reshaping industries and driving progress towards a more sustainable future.

This Special Issue seeks research papers, short communications, and review articles that focus on novel development of soft tooling process chains and their applications. The scope covers all the relevant topics, including (but not limited to): tool life; precision and accuracy; novel process chains and applications; powder injection molding; materials modification; failure of the mold; modeling of the soft tooling process; process monitoring, control, and automation; functional surfaces; and metrology.

PETG boasts impressive mechanical properties, combining high tensile strength with impact resistance. This unique blend of strength and flexibility ensures that PETG components withstand rigorous handling and environmental stresses without compromising performance. Consequently, PETG finds widespread use in applications requiring durable and long-lasting solutions.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Fine-tuning injection molding parameters is paramount in achieving optimal results with PETG. Variables such as melt temperature, injection speed, and packing pressure significantly impact part quality and dimensional accuracy. By meticulously controlling these parameters, manufacturers can ensure uniformity across production batches while minimizing scrap and rework.

All articles published by MDPI are made immediately available worldwide under an open access license. No special permission is required to reuse all or part of the article published by MDPI, including figures and tables. For articles published under an open access Creative Common CC BY license, any part of the article may be reused without permission provided that the original article is clearly cited. For more information, please refer to https://www.mdpi.com/openaccess.

A special issue of Micromachines (ISSN 2072-666X). This special issue belongs to the section "D3: 3D Printing and Additive Manufacturing".

PETG injection molding stands as a cornerstone in the realm of plastic manufacturing, captivating industries with its exceptional properties and adaptability. Originating from the polyester family, PETG exhibits remarkable clarity, durability, and chemical resistance, rendering it an ideal candidate for various applications.

: Injection molding allows for intricate part geometries and customization, empowering designers to unleash their creativity.

While injection molding yields near-net-shaped parts, post-molding operations may be necessary to refine surface finish or add secondary features. Techniques such as machining, polishing, and assembly complement the injection molding process, enabling manufacturers to meet stringent design specifications and functional requirements.

Editor’s Choice articles are based on recommendations by the scientific editors of MDPI journals from around the world. Editors select a small number of articles recently published in the journal that they believe will be particularly interesting to readers, or important in the respective research area. The aim is to provide a snapshot of some of the most exciting work published in the various research areas of the journal.

Injection molding (IM) is the primary method for the manufacture of polymer parts in mass production. A soft tooling process-chain that incorporates polymer 3D printing for mold fabrication will allow for an ultra-flexible manufacturing of medium-scale production series (e.g., from 1000 to 10,000 cycles by injection molding or similar). This method has the potential to replace the tool steel mold with a set of soft tool inserts made from polymer. Thus, the machining time and cost can be reduced significantly compared to conventional tooling processes based on milling, drilling, CNC tooling, etc. Additionally, additive manufacturing and novel process chains make it possible to produce parts with complex 3D geometry.

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

: PETG's susceptibility to contamination necessitates stringent cleanliness protocols during mold preparation and maintenance.

: Continuously refining injection molding processes through advanced modeling and simulation techniques to improve efficiency and reduce waste.

In conclusion, PETG injection molding epitomizes the convergence of innovation and functionality, revolutionizing the manufacturing landscape. As industries continue to embrace sustainable practices and demand custom-tailored solutions, PETG's versatility and performance make it poised for sustained growth and adoption.

: Compatibility issues with certain additives or colorants may arise, necessitating thorough compatibility testing to ensure product integrity.

The success of PETG injection molding hinges on meticulous mold design and optimization. Factors such as gate placement, cooling channel configuration, and part geometry profoundly influence the quality and efficiency of the molding process. Employing advanced simulation techniques aids in predicting and mitigating potential defects, thereby streamlining production and enhancing product consistency.

By embracing these endeavors, stakeholders can propel PETG injection molding towards greater innovation, sustainability, and global relevance in the years to come.

Manuscript Submission Information Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website. Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Micromachines is an international peer-reviewed open access monthly journal published by MDPI. Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

PETG (Polyethylene Terephthalate Glycol) injection molding is a pivotal process in modern manufacturing, offering a versatile solution for producing a wide array of products. This article aims to delve into the intricacies of PETG injection molding, providing readers with a comprehensive understanding of its principles, applications, advantages, challenges, and future prospects.

Manuscript Submission Information Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website. Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Micromachines is an international peer-reviewed open access monthly journal published by MDPI. Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

: Embracing circular economy principles by enhancing recycling infrastructure and promoting closed-loop material cycles to minimize environmental impact.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Micromachines is an international peer-reviewed open access monthly journal published by MDPI.

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website. Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Micromachines is an international peer-reviewed open access monthly journal published by MDPI. Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Feature papers represent the most advanced research with significant potential for high impact in the field. A Feature Paper should be a substantial original Article that involves several techniques or approaches, provides an outlook for future research directions and describes possible research applications.

PETG's versatility enables it to accommodate diverse molding requirements, ranging from intricate designs to large-scale production. Its ability to maintain structural integrity under different temperatures and pressures makes it suitable for a broad spectrum of applications, including packaging, automotive parts, medical devices, and consumer goods.

: PETG's inherent shrinkage tendencies can lead to dimensional inaccuracies and warpage. Employing proper mold design and processing techniques helps mitigate these challenges.