Non-contact measurement of the temperature profile of PET preforms

Saggin, Bortolino; Tarabini, Marco; Scaccabarozzi, Diego; Cornolti, Luca; Giberti, Hermes; Moschioni, G.

doi:10.1016/j.measurement.2018.10.044

Cited by 9 publications

(9 citation statements)

References 19 publications

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“…Papers [6][7][8] give the proposals and requirements for the constructed technological equipment to produce PET-packaging, specifically, its shape formation while ensuring the manufacturing of high-quality products with a minimum degree of defects. Studies [9,10] note the need to introduce modern universal matrices of control over the predefined parameters, specifically in the process of molding bottles from polyethylene terephthalate by a dual-stage stretching under pressure with clearly adjusted properties of the system received. However, the cited papers [6][7][8][9][10] did not resolve those issues that are related to resource-saving and minimizing defects in the obtained packaging containers.…”

Section: Literature Review and Problem Statementmentioning

confidence: 99%

“…Studies [9,10] note the need to introduce modern universal matrices of control over the predefined parameters, specifically in the process of molding bottles from polyethylene terephthalate by a dual-stage stretching under pressure with clearly adjusted properties of the system received. However, the cited papers [6][7][8][9][10] did not resolve those issues that are related to resource-saving and minimizing defects in the obtained packaging containers. The reason for this is the objective technological complexity of the implementation and control of the process in real time.…”

Section: Literature Review and Problem Statementmentioning

confidence: 99%

“…Study [10] noted the influence of uneven temperature distribution on the orientation caused by a two-axial pressure stretching with further influence on the mechanical, optical, and barrier properties of bottles. However, there remain uncertain issues related to the performance characteristics of polymeric product manufacturing equipment at thermal processing.…”

Section: Literature Review and Problem Statementmentioning

confidence: 99%

See 2 more Smart Citations

Improving the quality of the technological process of packaging shape formation based on the information structure of an automated system

Sashnova

Zahorulko

Savchenko

et al. 2020

EEJET

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Section: Literature Review and Problem Statementmentioning

confidence: 99%

Section: Literature Review and Problem Statementmentioning

confidence: 99%

Section: Literature Review and Problem Statementmentioning

confidence: 99%

See 1 more Smart Citation

Improving the quality of the technological process of packaging shape formation based on the information structure of an automated system

Sashnova

Zahorulko

Savchenko

et al. 2020

EEJET

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“…Perhaps the most important feature of a bottle intended for hot filling is its resistance to thermal shrinkage. However, each hot fill bottle used commercially must meet certain minimum requirements [38], including:…”

Section: Influence Of Deformation and Temperature On The Thermal Resistance Of Pet Materialsmentioning

confidence: 99%

A literature survey of the influence of preform reheating and stretch blow molding with hot mold process parameters on the properties of PET containers. Part II

Wawrzyniak¹,

Karaszewski²

2020

Polimery

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The paper presents a wide analysis of the literature on the modified blow molding process with simultaneous stretching of PET [poly(ethylene terephthalate)] material for storing hot filled drinks. The paper is a continuation of the first part presented earlier [1]. In this part it is presented in detail the impact of stretch blow molding with hot mold process parameters on thermal resistance of PET containers. An analysis of the literature shows that the relaxation of the amorphous phase has the greatest impact on the thermal stability and pressure resistance of the bottle. At the same time, the thermal stability of the bottle increases, and the pressure strength decreases when the relaxation of the amorphous phase is increased, and the crystallites increase to the largest size possible without causing thermal whitening of the material. The measure of relaxation of the amorphous phase is based on the amount of oriented and "rigid" amorphous phase, since the higher the degree of relaxation of the amorphous phase, the smaller the amounts of oriented and rigid amorphous phase. The main parameters of the hot mold SBM process that affect the properties of the hot filling bottle are the intrinsic viscosity of the preform material, the power profile of the heating lamps in the heating oven (there are seven levels of heating lamps), the heating time in the oven and the associated time of temperature-induced crystallization prior to the SBM process, the speed of the stretching rod, the pre-blow delay due to the stretching rod position, the pre-blow pressure, pre-blow duration, air blow pressure, duration of the main blow, temperature profile of the heated blow mold (there are two heat zones for the blow mold, the lateral surface of the bottles and base zone), duration of annealing in the mold, cooling air temperature of a bottle in a blow mold fed by a stretching rod, and the pressure in the feed branch for air cooling of a bottle in a blow mold fed by a stretching rod. Thus, the properties of a bottle or hot fill can be influenced by as many as 20 factors during the SBM process with a hot mold.

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“…The new method aims to provide a robust and cost-effective alternative, in agreement with the Internet of Things (IoT) paradigm [9], to the visual inspection performed by trained operators in detecting defects prior to cylinder assembly. The IoT approach has a great relevance in modern industrial quality control; low-cost sensors can be used to greatly improve product quality in different fields [10]. Furthermore, signal processing plays an important role in the extraction of information from production systems, and techniques such as sensor fusion and data fusion are nowadays widely used to reduce the measurement uncertainty [11].…”

Section: Introductionmentioning

confidence: 99%

Measurement Method for Quality Control of Cylinders in Roll-to-Roll Printing Machines

et al. 2020

Self Cite

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This paper describes a measurement method for the quality control of cylinders for printing machines based on roll-to-roll presses. If the surface finishing of the cylinders is not adequate, the printing is unacceptable, and the defective cylinders must be reworked. The performed quality check of the cylinder surface roughness by means of contact methods was unable to identify the cylinder defects, and acceptance of the manufactured cylinders before integration was demanded to the visual inspection performed by trained operators. In this work a contactless measurement method based on the eddy current displacement sensor was proposed and validated as a tool for quality check as an alternative to optical roughness measurements. A test bench for the characterization of printer cylinders was designed and manufactured, allowing for the validation of the proposed method on different batches of cylinders and the identification of a threshold to guide the acceptance of tested cylinders prior to mounting on the roll-to-roll press.

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Non-contact measurement of the temperature profile of PET preforms

Cited by 9 publications

References 19 publications

Improving the quality of the technological process of packaging shape formation based on the information structure of an automated system

Improving the quality of the technological process of packaging shape formation based on the information structure of an automated system

A literature survey of the influence of preform reheating and stretch blow molding with hot mold process parameters on the properties of PET containers. Part II

Measurement Method for Quality Control of Cylinders in Roll-to-Roll Printing Machines

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