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So-young Park - One of the best experts on this subject based on the ideXlab platform.

  • A Case of Occupational Asthma in a Plastic Injection Process Worker
    Annals of occupational and environmental medicine, 2013
    Co-Authors: Jong Suk Lee, Hyun Seok Kwak, Byung Soon Choi, So-young Park
    Abstract:

    We report a case of death due to asthma attack in a plastic Injection Process worker with a history of asthma. To assess task relevance, personal history including occupational history and medical records were reviewed. Samples of the substances utilized in the Injection Process were collected by visiting the patient’s workplace. The work environment with the actual Process was reproduced in the laboratory, and the released substances were evaluated. The medical records confirmed that the patient’s conventional asthma was in remission. The analysis of the resins discharged from the Injection Process simulation revealed styrene, which causes occupational asthma, and benzenepropanoic acid, 3,5-bis(1,1-dimethylethyl)-4-hydroxy-, and octadecyl ester. Even though it was not the case in the present study, various harmful substances capable of inducing asthma such as formaldehyde, acrolein, and acetic acid are released during resin Processing. A worker was likely to occur occupational asthma as a result of the exposure to the harmful substances generated during the plastic Injection Process.

  • A Case of Occupational Asthma in a Plastic Injection Process Worker
    Annals of Occupational and Environmental Medicine, 2013
    Co-Authors: Hyun Seok Kwak, Byung Soon Choi, So-young Park
    Abstract:

    Objectives We report a case of death due to asthma attack in a plastic Injection Process worker with a history of asthma. Methods To assess task relevance, personal history including occupational history and medical records were reviewed. Samples of the substances utilized in the Injection Process were collected by visiting the patient’s workplace. The work environment with the actual Process was reproduced in the laboratory, and the released substances were evaluated. Results The medical records confirmed that the patient’s conventional asthma was in remission. The analysis of the resins discharged from the Injection Process simulation revealed styrene, which causes occupational asthma, and benzenepropanoic acid, 3,5- bis (1,1-dimethylethyl)-4-hydroxy-, and octadecyl ester. Even though it was not the case in the present study, various harmful substances capable of inducing asthma such as formaldehyde, acrolein, and acetic acid are released during resin Processing. Conclusion A worker was likely to occur occupational asthma as a result of the exposure to the harmful substances generated during the plastic Injection Process.

Michel Vincent - One of the best experts on this subject based on the ideXlab platform.

  • Numerical Modeling of Bubble Growth in Microcellular Polypropylene Produced in a Core-Back Injection Process Using Chemical Blowing Agents
    International Polymer Processing, 2016
    Co-Authors: José Antonio Reglero Ruiz, Michel Vincent, Jean-françois Agassant
    Abstract:

    A core-back polypropylene foaming Injection Process using chemical blowing agents (CBA) has been studied. First, Injection tests were carried out with two different CBAs and the different morphologies of the obtained samples have been analyzed. Structural parameters such as cell density and average radius size were calculated. Then, a bubble growth model was developed to predict the foaming development during the Process, controlled by the depressurization of the mold cavity during the short core-back opening coupled with the evolution of the temperature during core-back and subsequent cooling. A good agreement is found between theoretical predictions and experimental results.

  • Morphological analysis of microcellular PP produced in a core-back Injection Process using chemical blowing agents and gas counter pressure
    Polymer Engineering and Science, 2015
    Co-Authors: Jose Antonio Reglero Ruiz, Michel Vincent, Alain Claverie, Jean-françois Agassant, Sébastien Huck
    Abstract:

    A complete experimental analysis of the microcellular Injection Process using Chemical Blowing Agents (CBA) with Gas Counter Pressure (GCP) and core-back expansion is presented. Three different types of polypropylene, neat and charged, were mixed with two different CBAs and injected into a plate mold with varying Process parameters. First, an exhaustive cartographical mapping of the plate morphology is analyzed. In a second step, the relation between Injection parameters and the resulting morphology is investigated. The results show that Injection time affects the cellular structure. The formulation, especially the type of chemical foaming agent, controls the average bubble radius. Compared with classical Injection Process, the use of CBAs, combined to Gas Counter Pressure and core-back Process, allows obtaining parts with good surface aspect, more homogeneous cellular structures and smaller bubble radius

  • An operator support system based on case-based reasoning for the plastic moulding Injection Process
    Advances in Case-Based Reasoning, 1998
    Co-Authors: Maria Malek, Marc-philippe Toitgans, Jean-luc Wybo, Michel Vincent
    Abstract:

    We aim at developing an operator support system which could be able to help and to guide the operator in decision making during the control of the plastic Injection moulding Process . The main objective is to optimise the Injection Process in order to decrease as possible the defects (increase the quality) during production. Our approach consists on building a case-based reasoning (CBR) and learning system. Our motivations are based on the fact that the domain knowledge is not complete. In addition, a general comprehensive mathematical model giving satisfactory picture of the Injection Process is not yet available.

  • EWCBR - An Operator Support System Based on Case-Based Reasoning for the Plastic Moulding Injection Process
    Lecture Notes in Computer Science, 1998
    Co-Authors: Maria Malek, Marc-philippe Toitgans, Jean-luc Wybo, Michel Vincent
    Abstract:

    We aim at developing an operator support system which could be able to help and to guide the operator in decision making during the control of the plastic Injection moulding Process. The main objective is to optimise the Injection Process in order to decrease as possible the defects (increase the quality) during production. Our approach consists on building a case-based reasoning (CBR) and learning system. Our motivations are based on the fact that the domain knowledge is not complete. In addition, a general comprehensive mathematical model giving satisfactory picture of the Injection Process is not yet available.

Hyun Seok Kwak - One of the best experts on this subject based on the ideXlab platform.

  • A Case of Occupational Asthma in a Plastic Injection Process Worker
    Annals of occupational and environmental medicine, 2013
    Co-Authors: Jong Suk Lee, Hyun Seok Kwak, Byung Soon Choi, So-young Park
    Abstract:

    We report a case of death due to asthma attack in a plastic Injection Process worker with a history of asthma. To assess task relevance, personal history including occupational history and medical records were reviewed. Samples of the substances utilized in the Injection Process were collected by visiting the patient’s workplace. The work environment with the actual Process was reproduced in the laboratory, and the released substances were evaluated. The medical records confirmed that the patient’s conventional asthma was in remission. The analysis of the resins discharged from the Injection Process simulation revealed styrene, which causes occupational asthma, and benzenepropanoic acid, 3,5-bis(1,1-dimethylethyl)-4-hydroxy-, and octadecyl ester. Even though it was not the case in the present study, various harmful substances capable of inducing asthma such as formaldehyde, acrolein, and acetic acid are released during resin Processing. A worker was likely to occur occupational asthma as a result of the exposure to the harmful substances generated during the plastic Injection Process.

  • A Case of Occupational Asthma in a Plastic Injection Process Worker
    Annals of Occupational and Environmental Medicine, 2013
    Co-Authors: Hyun Seok Kwak, Byung Soon Choi, So-young Park
    Abstract:

    Objectives We report a case of death due to asthma attack in a plastic Injection Process worker with a history of asthma. Methods To assess task relevance, personal history including occupational history and medical records were reviewed. Samples of the substances utilized in the Injection Process were collected by visiting the patient’s workplace. The work environment with the actual Process was reproduced in the laboratory, and the released substances were evaluated. Results The medical records confirmed that the patient’s conventional asthma was in remission. The analysis of the resins discharged from the Injection Process simulation revealed styrene, which causes occupational asthma, and benzenepropanoic acid, 3,5- bis (1,1-dimethylethyl)-4-hydroxy-, and octadecyl ester. Even though it was not the case in the present study, various harmful substances capable of inducing asthma such as formaldehyde, acrolein, and acetic acid are released during resin Processing. Conclusion A worker was likely to occur occupational asthma as a result of the exposure to the harmful substances generated during the plastic Injection Process.

Maria Malek - One of the best experts on this subject based on the ideXlab platform.

  • An operator support system based on case-based reasoning for the plastic moulding Injection Process
    Advances in Case-Based Reasoning, 1998
    Co-Authors: Maria Malek, Marc-philippe Toitgans, Jean-luc Wybo, Michel Vincent
    Abstract:

    We aim at developing an operator support system which could be able to help and to guide the operator in decision making during the control of the plastic Injection moulding Process . The main objective is to optimise the Injection Process in order to decrease as possible the defects (increase the quality) during production. Our approach consists on building a case-based reasoning (CBR) and learning system. Our motivations are based on the fact that the domain knowledge is not complete. In addition, a general comprehensive mathematical model giving satisfactory picture of the Injection Process is not yet available.

  • EWCBR - An Operator Support System Based on Case-Based Reasoning for the Plastic Moulding Injection Process
    Lecture Notes in Computer Science, 1998
    Co-Authors: Maria Malek, Marc-philippe Toitgans, Jean-luc Wybo, Michel Vincent
    Abstract:

    We aim at developing an operator support system which could be able to help and to guide the operator in decision making during the control of the plastic Injection moulding Process. The main objective is to optimise the Injection Process in order to decrease as possible the defects (increase the quality) during production. Our approach consists on building a case-based reasoning (CBR) and learning system. Our motivations are based on the fact that the domain knowledge is not complete. In addition, a general comprehensive mathematical model giving satisfactory picture of the Injection Process is not yet available.

Byung Soon Choi - One of the best experts on this subject based on the ideXlab platform.

  • A Case of Occupational Asthma in a Plastic Injection Process Worker
    Annals of occupational and environmental medicine, 2013
    Co-Authors: Jong Suk Lee, Hyun Seok Kwak, Byung Soon Choi, So-young Park
    Abstract:

    We report a case of death due to asthma attack in a plastic Injection Process worker with a history of asthma. To assess task relevance, personal history including occupational history and medical records were reviewed. Samples of the substances utilized in the Injection Process were collected by visiting the patient’s workplace. The work environment with the actual Process was reproduced in the laboratory, and the released substances were evaluated. The medical records confirmed that the patient’s conventional asthma was in remission. The analysis of the resins discharged from the Injection Process simulation revealed styrene, which causes occupational asthma, and benzenepropanoic acid, 3,5-bis(1,1-dimethylethyl)-4-hydroxy-, and octadecyl ester. Even though it was not the case in the present study, various harmful substances capable of inducing asthma such as formaldehyde, acrolein, and acetic acid are released during resin Processing. A worker was likely to occur occupational asthma as a result of the exposure to the harmful substances generated during the plastic Injection Process.

  • A Case of Occupational Asthma in a Plastic Injection Process Worker
    Annals of Occupational and Environmental Medicine, 2013
    Co-Authors: Hyun Seok Kwak, Byung Soon Choi, So-young Park
    Abstract:

    Objectives We report a case of death due to asthma attack in a plastic Injection Process worker with a history of asthma. Methods To assess task relevance, personal history including occupational history and medical records were reviewed. Samples of the substances utilized in the Injection Process were collected by visiting the patient’s workplace. The work environment with the actual Process was reproduced in the laboratory, and the released substances were evaluated. Results The medical records confirmed that the patient’s conventional asthma was in remission. The analysis of the resins discharged from the Injection Process simulation revealed styrene, which causes occupational asthma, and benzenepropanoic acid, 3,5- bis (1,1-dimethylethyl)-4-hydroxy-, and octadecyl ester. Even though it was not the case in the present study, various harmful substances capable of inducing asthma such as formaldehyde, acrolein, and acetic acid are released during resin Processing. Conclusion A worker was likely to occur occupational asthma as a result of the exposure to the harmful substances generated during the plastic Injection Process.