Additive Manufacturing of Polymer Moulds for Small-Batch Injection Moulding

Godec, Damir; Breški, Tomislav; Katalenić, Miodrag

doi:10.31803/tg-20200525213336

Cited by 3 publications

(9 citation statements)

References 2 publications

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“…Godec et al [78] studied the AM PolyJet process and its possible application for the production of bridge polymer molds for injection molding of a small quantity of the molded parts together with design rules for PolyJet bridge molds, dividing 3D-printed molds into three categories, depending on the durability [78]:…”

Section: D Printing Of Molds For Injection Techniquesmentioning

confidence: 99%

“…In their studies, Godec et al [78,79] attest that PolyJet molds are not intended to be designed to replace soft or hard tools used in medium-and high-volume production, their purpose being to fill the gap between them and sometimes act as substitutes for 3D-printed prototypes. Although the major advantages are a short time for manufacturing and printing at room temperature, successful injection molding using these molds requires taking into consideration additional factors such (such as design, manufacturing, and post-processing).…”

Section: D Printing Of Molds For Injection Techniquesmentioning

confidence: 99%

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The Use of Additive Manufacturing Techniques in the Development of Polymeric Molds: A Review

Pelin,

Sonmez,

Pelin

2024

Polymers

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The continuous growth of additive manufacturing in worldwide industrial and research fields is driven by its main feature which allows the customization of items according to the customers’ requirements and limitations. There is an expanding competitiveness in the product development sector as well as applicative research that serves special-use domains. Besides the direct use of additive manufacturing in the production of final products, 3D printing is a viable solution that can help manufacturers and researchers produce their support tooling devices (such as molds and dies) more efficiently, in terms of design complexity and flexibility, timeframe, costs, and material consumption reduction as well as functionality and quality enhancements. The compatibility of the features of 3D printing of molds with the requirements of low-volume production and individual-use customized items development makes this class of techniques extremely attractive to a multitude of areas. This review paper presents a synthesis of the use of 3D-printed polymeric molds in the main applications where molds exhibit a major role, from industrially oriented ones (injection, casting, thermoforming, vacuum forming, composite fabrication) to research or single-use oriented ones (tissue engineering, biomedicine, soft lithography), with an emphasis on the benefits of using 3D-printed polymeric molds, compared to traditional tooling.

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Section: D Printing Of Molds For Injection Techniquesmentioning

confidence: 99%

Section: D Printing Of Molds For Injection Techniquesmentioning

confidence: 99%

The Use of Additive Manufacturing Techniques in the Development of Polymeric Molds: A Review

Pelin,

Sonmez,

Pelin

2024

Polymers

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“…2 represents a pair of polymer mold inserts from a case study with particularly distinctive geometric structures. After analyzing the guidelines from literature research [8][9][10][11][12][13], the geometric structures are classified into the following categories.…”

Section: Geometric Structures In Additive Toolingmentioning

confidence: 99%

“…Holes with a diameter smaller than 0.5 mm should not be printed during additive manufacturing, but should be re-drilled afterwards in post-processing [8]. Holes for ejector pins should always be re-drilled due to the recommended fits [9].…”

Section: Lowered Featuresmentioning

confidence: 99%

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Review and Development of Design Guidelines for Additive Tooling of Injection Molds Using PolyJet Modelling

Junk,

Schrock,

Schmieder

2023

Springer Tracts in Additive Manufacturing

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Due to globalization and the resulting increase in competition on the market, products must be produced more and more cheaply, especially in series production, because buyers expect new variants or even completely new products in ever shorter cycles. Injection molding is the most important production process for manufacturing plastic components in large quantities. However, the conventional production of a mold is extremely time-consuming and costly, which creates a contradiction to the fast pace of the market. Additive tooling is an area of application of additive manufacturing, which in the field of injection molding is preferably used for the prototype production of mold inserts. This allows injection molding tools to be produced faster and more cheaply than through the subtractive manufacturing of metal tools. Material Jetting processes using polymers (MJT-UV/P), also called Polyjet Modeling (PJM), have a great potential for use in additive tooling. Due to the poorer mechanical and thermal properties compared to conventional mold insert materials, e.g. steel or aluminum, the previously used design principles cannot be applied. Accordingly, new design guidelines are necessary, which are developed in this paper. The necessary information is obtained with the help of a systematic literature research. The design guidelines are mapped in a uniform design guide, which is structured according to the design process of injection molds. The guidelines do not only refer to the constructive design of the injection mold or the polymer mold insert, but to the entire design process and describe the four phases of planning, conception, development and realization. Particular attention is paid to the special geometric designs of a polymer mold insert and the thermomechanical properties of the mold insert materials. As a result, design guidelines are available that are adapted to the special requirements of additive tooling of molds inserts made of plastics for injection molding.

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Analysis and Advances in Additive Manufacturing as a New Technology to Make Polymer Injection Molds for World-Class Production Systems

et al. 2022

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The currently growing demand for metallic and polymeric products has undoubtedly changed the rules of manufacturing, enabling customers to more functionally define their products based on their needs. Nowadays, a new technique for rapid tooling, Additive Manufacturing (AM), can create customized products with more complex geometries and short life cycles (flexibility) in order to keep up with the new variables imposed by the manufacturing environment. In the last two decades, the migration from subtractive manufacturing to AM has materialized such products with reduced costs and cycle times. AM has been recently promoted to develop polymer molds for product manufacturing. This paper reviews the main findings in the literature concerning polymer molds created by AM compared to conventional (metal) molds obtained by subtractive manufacturing. Information about specific topics is scarce or nonexistent, for example, about the characterization of the most commonly injected materials and molds used in this type of technology, their mechanical properties (part and mold), designs for all types of geometries, and costs. These aspects are addressed in this literature review, highlighting the advantages of this alternative manufacturing process, which is considered a desirable technology worldwide.

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Additive Manufacturing of Polymer Moulds for Small-Batch Injection Moulding

Cited by 3 publications

References 2 publications

The Use of Additive Manufacturing Techniques in the Development of Polymeric Molds: A Review

The Use of Additive Manufacturing Techniques in the Development of Polymeric Molds: A Review

Review and Development of Design Guidelines for Additive Tooling of Injection Molds Using PolyJet Modelling

Analysis and Advances in Additive Manufacturing as a New Technology to Make Polymer Injection Molds for World-Class Production Systems

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