Relevant bibliographies by topics / Compression molds for molding soles

Academic literature on the topic 'Compression molds for molding soles'

Author: Grafiati
Published: 30 May 2022
Last updated: 31 May 2022

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Journal articles on the topic "Compression molds for molding soles"

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Nagato, Keisuke. "Injection Compression Molding of Replica Molds for Nanoimprint Lithography." Polymers 6, no. 3 (March 5, 2014): 604–12. http://dx.doi.org/10.3390/polym6030604.

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Castro, J. M., and C. C. Lee. "Thermal and cure analysis in sheet molding compound compression molds." Polymer Engineering and Science 27, no. 3 (February 1987): 218–24. http://dx.doi.org/10.1002/pen.760270307.

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Wang, Youmin, Xiangli Li, and He Sui. "Numerical Investigation and Mold Optimization of the Automobile Coat Rack Compression Molding." Advances in Materials Science and Engineering 2021 (April 30, 2021): 1–19. http://dx.doi.org/10.1155/2021/6665753.

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In order to have more accurate control over the compression molding of automobile coat rack, improve the quality of molding products, and achieve the goal of lightweight design, a novel mechanical model for the main two-layer composite structure of the coat rack is proposed. In this regard, the main factors affecting the mechanical properties of the composite structure are obtained. The hot air convection is selected for the sheet preheating. During the experiment, the hot air temperature, preheating time, molding pressure, and pressing holding time are set to 250°C, 110 s, 13 MPa, and 80 s, respectively. Moreover, the error compensation method is applied to compensate for the shrinkage of the product during solidification and cooling. The LS-DYNA finite element software is used to simulate the molding process of the main body of the coat rack, and the node force information with large deformation is obtained accordingly. The load mapping is used as the boundary condition of mold topology optimization, and the compression molding of the main body of the coat rack is optimized. A lightweight design process and method for the compression molding of automotive interior parts and a mathematical model for the optimization of the solid isotropic material penalty (SIMP) (power law) material interpolation of the concave and convex molds are established. Based on the variable density method, OptiStruct is used for the lightweight design of the convex and concave molds of the main body of the coat rack, which reduces the mold weight by 15.6% and meets the requirements of production quality and lightweight.
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Tedde, Giovanni Matteo, Denise Bellisario, Loredana Santo, and Fabrizio Quadrini. "Microsculpturing of Polymeric Surfaces by Compression Molding." Key Engineering Materials 699 (July 2016): 49–56. http://dx.doi.org/10.4028/www.scientific.net/kem.699.49.

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Surface micropatterning of polymers is an important process in a large number of applications ranging from microelectronics, sensors design and material science, to tissue engineering and cell biology. In this study a simple and versatile method for manufacturing micro-scale polymer surface patterns has been developed. Micropatterned surfaces of acrylonitrile-butadiene–styrene (ABS) were engineered by compression molding. Two different micropatterned surfaces were fabricated using diverse molds. The first micropatterning was achieved on a brass mold by the intersection of instrumented microindentation traces. The second microsculptured surface was realized through a bronze sintered mold. The morphological aspects and the surface wettability after microsculpturing were investigated. The microsculptured ABS surface produced by the sintered mold shows a higher contact angle compared with those of flat ABS surfaces. From the experimental results, it was found that the intrinsic hydrophobicity of the material is enhanced simply through increasing surface roughness of the solid surface. The method presented is an economical process to fabricate hydrophobic microsculptured surfaces and it is suitable for many kinds of materials.
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Chval, Zdenek, Karel Raz, and Frantisek Sedlacek. "Design of Injection Mold from Plastic Material." Key Engineering Materials 847 (June 2020): 75–80. http://dx.doi.org/10.4028/www.scientific.net/kem.847.75.

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This paper deals with the use of plastics for making injection molds. Mold production times reduced by 90% and costs cut by up to 75% are some of the benefits of prototype molds from plastic materials. Today, materials with melt temperatures above 300 °C are used for plastic molds. They include ABS, PE, PP and PA. In this study, testing of high-temperature resin from Formlabs was performed. Compression and tensile test data are compared with the datasheet values and with virtual simulations. The tests were carried out at different temperatures. Based on their results, one can identify a suitable molding process with molds from this material.
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Jeong, Jin-Ho, Ki-Taek Kim, and Yong-Taek Im. "Plane-strain compression molding analysis of sheet molding compounds in flat and cross-sectional T-shape molds." Journal of Materials Processing Technology 57, no. 3-4 (February 1996): 320–31. http://dx.doi.org/10.1016/0924-0136(95)02077-2.

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Hanulikova, Barbora, Dana Shejbalova, and Zdenek Dvorak. "INFRARED ANALYSIS OF FOULING DURING EPDM CURING STUDIED ON MOLDS MADE OF STEEL AND ALUMINIUM ALLOYS." Rubber Chemistry and Technology 91, no. 2 (April 1, 2018): 390–400. http://dx.doi.org/10.5254/rct.18.81662.

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ABSTRACT Mold fouling during the crosslinking process of EPDM rubber compounds results in defects in compression-molded products and deterioration of process conditions. Moreover, subsequent cleaning of molds is expensive and causes a loss at production. The fouling of several types of steel and aluminum alloys, which represent molds with variously machined surfaces, was analyzed during 0–70 cycles of EPDM molding. Fourier transform infrared microscopy was used for investigation of fouling and paraffin oil (softener) and/or EPDM fragments were detected in vibrational spectra of fouling as the most probable components of it. Metal specimens with a grinded surface were found to be more resistant to EPDM residue deposition.
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Zyukov, E. A., M. A. Bulatov, and V. G. Duvidzon. "Calculation of thermal regimes and forecasting of the molds for plastic injection molding." Izvestiya MGTU MAMI 8, no. 2-3 (May 20, 2014): 106–16. http://dx.doi.org/10.17816/2074-0530-67599.

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In this paper the mathematical model of the formation of precipitation in the cooling channels of molds are presented, experimentally determined parameters of the cooling system and developed a software module for the calculation of the heat transfer coefficient. The technique for calculating the cooling system, introduced evaluation of the effectiveness of cooling, which allows to predict the performance of the mold. On the example of pressing parts of polypropylene defined cycle time compression and turnaround hot runner mold.
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Synyuk, Oleg, Janusz Musiał, Borys Zlotenko, and Tetiana Kulik. "Development of Equipment for Injection Molding of Polymer Products Filled with Recycled Polymer Waste." Polymers 12, no. 11 (November 17, 2020): 2725. http://dx.doi.org/10.3390/polym12112725.

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Polymer waste of light industry and other industries is processed by chemical recycling and mechanical grinding. Modern equipment for polymer waste processing has the following drawbacks: significant energy consumption and reduced performance properties of recycled polymer. New technological processes and equipment for polymer waste recycling have been developed for the manufacture of light industry polymer products with increased performance characteristics. The manufacturing of such products was made possible by the development of the mathematical model, which describes the movement of a mixture of main polymer material and particles of recycled polymer waste in the process of filling a mold cavity. The model, in contrast to the existing models, allows observing the formation of the polymer product structure containing recycled waste particles. Improvement in the performance characteristics of shoe soles made by the injection molding of a mixture of polyvinylchloride and particles of recycled polyvinylchloride was confirmed by experimental tests of breaking strength and fatigue life. The results of these tests can be used in the design of processing equipment to obtain waste particles of the required shape and size and in the design of molds to provide the required concentration and orientation of waste particles in light industry polymer products.
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Sommer, J. G. "Molding of Rubber for High Performance Applications." Rubber Chemistry and Technology 58, no. 3 (July 1, 1985): 662–83. http://dx.doi.org/10.5254/1.3536084.

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Abstract This paper broadly considers rubbers (elastomers), molding methods, and some problems associated with molding for high-performance (HP) applications. Molding procedures are then reviewed for several products used in HP applications. The elastomers mainly discussed are NR, SBR, CR, NBR, chloro-sulfonylpolyethylene rubber, silicone rubber, hydrofluoroelastomer and perfluorelastomer. NR is used in HP applications because it possesses desirable properties such as excellent fatigue resistance and high strength. Other rubbers or elastomers, such as silicone or perfluoroelastomer, are used in HP applications because they resist high temperatures and aggressive fluids. When molding these elastomers by compression, transfer, and injection, special procedures are sometimes necessary. These are discussed along with factors that affect molding behavior and the quality of molded products. These factors include: rheology, rubber shrinkage, inserts in moldings, mold fouling, mold materials, and design factors for molds. A special design is used for a compression mold for O-rings made from perfluoroelastomer. These are used to seal against aggressive fluids like dinitrogen tetroxide. In other HP sealing applications, NBR lip seals are used; molding factors are discussed which significantly affect their sealing capability. Also discussed are laminates, where NR is bonded to metal. These are used as bridge bearings and the steel plates in them cause nonuniform shrinkage. A nozzle bearing for the space shuttle is another HP application for an NR laminate; over 100 thermocouples were used to monitor temperature during molding. This paper concludes with a brief discussion of molding silicone rubber for spark plug boots and electrical connectors.
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Dissertations / Theses on the topic "Compression molds for molding soles"

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Синюк, О. М., and O. M. Synyuk. "Наукові основи проектування обладнання для переробки полімерних відходів у вироби легкої промисловості." Дисертація, 2018. http://elar.khnu.km.ua/jspui/handle/123456789/7647.

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Books on the topic "Compression molds for molding soles"

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Parker, Philip M. The 2007-2012 World Outlook for Plastics Compression Molding Machines Excluding Patterns and Molds. ICON Group International, Inc., 2006.

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The 2006-2011 World Outlook for Plastics Compression Molding Machines Excluding Patterns and Molds. Icon Group International, Inc., 2005.

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Book chapters on the topic "Compression molds for molding soles"

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Han, Chang Dae. "Compression Molding of Thermoset/Fiber Composites." In Rheology and Processing of Polymeric Materials: Volume 2: Polymer Processing. Oxford University Press, 2006. http://dx.doi.org/10.1093/oso/9780195187830.003.0019.

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Glass-fiber-reinforced thermoset composites have long been used by the plastics industry. Two primary reasons for using glass fibers as reinforcement of thermosets are: (1) to improve the mechanical/physical properties (e.g., tensile modulus, dimensional stability, fatigue endurance, deformation under load, hardness, or abrasion resistance) of the thermosets, and (2) to reduce the cost of production by replacing expensive resins with inexpensive glass fibers. In place of metals, the automotive industry uses glassfiber- reinforced unsaturated polyester composites. One reason for this substitution is that the weight per unit volume of composite materials is quite low compared with that of metals. This has allowed for considerable reductions in the fuel consumption of automobiles. Another reason is that composite materials are less expensive than metals. The unsaturated polyester premix molding compounds in commercial use are supplied as sheet molding compound (SMC), bulk molding compound (BMC), or thick molding compound (TMC) (Bruins 1976; Parkyn et al. 1967). These molding compounds can be molded in standard compression or transfer molds. The basic challenge in molding unsaturated polyester premix compounds is to get a uniform layer of glass reinforcement in place in the die cavity while the resin fills the cavity and reaches its gel stage during cure. Temperature, mold closing speed, pressure, and cure time are all functions of the design of the part being produced. The flow of the mixture through the gate(s) can result in variations in strength across the part due to fiber orientation during the flow. The precise end-use properties depend on the fiber orientation, fiber distribution, and fiber content in the premix compounds, which are greatly influenced by the processing conditions. Since the mechanical properties of the molded articles depend strongly upon the orientation of the glass fibers, it is important to understand how to control fiber orientation during molding. Unsaturated polyester accounts for the greater part of all thermosets used in glass-fiber-reinforced plastics. Glass-fiber-reinforced unsaturated polyesters offer the advantages of a balance of good mechanical, chemical, and electrical properties. Depending upon the application, a number of additives are employed to provide specific products or end-use properties.
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Conference papers on the topic "Compression molds for molding soles"

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Chen, Yang, Allen Y. Yi, Fritz Klocke, and Guido Pongs. "Manufacturing of Glass Diffractive Optical Elements by Use of Precision Compression Molding Process." In ASME 2007 International Manufacturing Science and Engineering Conference. ASMEDC, 2007. http://dx.doi.org/10.1115/msec2007-31210.

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Recent advances in compression molding process offer a potential high volume precision net shape fabrication method for micro and diffractive glass optical elements. In this research, glass diffractive optical elements with lateral features in the order of 2 μm and a vertical height of about 500 nm were fabricated using glassy carbon molds and BK-7 optical glass material. Glassy carbon molds used in this research were fabricated with traditional cleanroom lithography and reactive ion etching process. Compression mold process was performed to duplicate the diffractive structures onto optical glass surface. Molded glass diffractive elements were studied using an atomic force microscope and a Veeco optical profilometer to evaluate the accuracy of replication and the capacity of the molding process. Different molding process parameters were tested to improve the molding process. The experimental results showed that the compression molding process is an effective alternative fabricating method for high volume, net shape and low cost glass diffractive optical elements.
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Cicconi, Paolo, Anna Costanza Russo, Mariorosario Prist, Francesco Ferracuti, Michele Germani, and Andrea Monteriù. "A Parametric Optimization Approach of an Induction Heating System for Energy Consumption Reduction." In ASME 2017 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/detc2017-68020.

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Nowadays, electromagnetic high-frequency induction is very used for different non-contact heating applications such as the molding process. Every molding process requires the preheating and the thermal maintenance of the molds, to enhance the filling phase and the quality of the final products. In this context, an induction heating system, mostly, is a customized equipment. The design and definition of an induction equipment depends on the target application. This technology is highly efficient and performant, however it provides a high-energy consumption. Therefore, optimization strategies are very suitable to reduce energy cost and consumption. The proposed paper aims to define a method to optimize the induction heating of a mold in terms of time, consumption, and achieved temperature. The proposed optimization method involves genetic algorithms to define the design parameters related to geometry and controller. A test case describes the design of an induction heating system for a polyurethane molding process, which is the soles foaming. This case study deals with the multi-objective optimization of parameters such as the geometrical dimensions, the inductor sizing, and the controller setting. The multi-objective optimization aims to reduce the energy consumption and to increase the wall temperature of the mold.
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Chen, Yang, Allen Y. Yi, Donggan Yao, Fritz Klocke, and Guido Pongs. "Thermal Reflow Process for Glass Microlens Manufacturing." In ASME 2008 International Manufacturing Science and Engineering Conference collocated with the 3rd JSME/ASME International Conference on Materials and Processing. ASMEDC, 2008. http://dx.doi.org/10.1115/msec_icmp2008-72459.

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This fabrication process includes three major steps, i.e., fabrication of glassy carbon molds with arrays of micro size holes, glass compression molding to create micro cylinders on glass substrate, and reheating to form microlens arrays. As compared to traditional polymer microlens arrays, glass microlens arrays are more reliable and therefore could be used in more critical applications. In this research, microlens arrays with different surface geometries were successfully fabricated on P-SK57 (Tg = 493 °C) glass substrate using a combination of compression molding and thermal reflow process. The major parameters that influence the final lens shape, including reheating temperature and holding time, were studied to establish a suitable fabrication process. A numerical simulation method was developed to evaluate the fabrication process.
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