Simulative design and process optimization of the two-stage stretch-blow molding process

2015 ◽  
Author(s):  
Ch. Hopmann ◽  
S. Rasche ◽  
C. Windeck
Keyword(s):  
Process Optimization ◽  
Molding Process ◽  
Two Stage ◽  
Blow Molding ◽  
Stretch Blow Molding

scholarly journals STUDY OF DEFECT ON 180 ML HDPE BOTTLES YOGURT PRODUCTS WITH SMC B11 EXTRUSION BLOW MACHINE AT PT X

KREATOR ◽  
2021 ◽  
Vol 4 (1) ◽  
Author(s):  
Tommy Prasetya Kana ◽  
Handika Dany Rahmayanti ◽  
HM Didik
Keyword(s):  
High Density Polyethylene ◽  
Plastic Material ◽  
Production Cycle ◽  
Molding Process ◽  
Plastic Packaging ◽  
Cycle Times ◽  
Blow Molding ◽  
Plastic Bottle ◽  
Extrusion Blow Molding ◽  
Stretch Blow Molding

The type of plastic packaging that is popular in the community is bottle packaging. The plastic material that is generally used to make plastic bottles is High Density Polyethylene (HDPE). The plastic bottle industry in Indonesia usually uses a blow molding process in its production process, where the blow molding process consists of injection blow molding, extrusion blow molding and stretch blow molding. The SMC B11 machine is one of the extrusion blow molding machines used to produce plastic bottle packaging. In producing workpieces, this machine still produces several products that are not in accordance with company standards, including in terms of production cycle times and product defects. Defects or defects that are often encountered include the appearance of spots, bent parison which causes the bottle to bend (the bottle body is thin one side) and blow pin which causes the thread to not fit.Keywords— Bottle, Plastic, Defect, Extrussion Blow Molding

scholarly journals Finite Element Analysis of PMMA Stretch Blow Molding

2014 ◽  
Vol 2014 ◽  
pp. 1-6
Author(s):  
Afef Bougharriou ◽  
Mohieddine Jeridi ◽  
Mohamed Hdiji ◽  
Anoir Boughrira ◽  
Kacem Saï
Keyword(s):  
Finite Element ◽  
Thickness Distribution ◽  
Geometrical Parameters ◽  
Molding Process ◽  
Element Analysis ◽  
Blow Molding ◽  
Stretch Blow Molding ◽  
Crucial Parameter

The electric bubbles are a useful product made of PMMA material. They are produced by the stretch blow molding process. Thickness, which reflects the quality of the electric bubble, is a crucial parameter that deserves special attention for the molding process. In this work, finite element simulations of the stretch blow molding process are performed aiming at the determination of the preform geometry to ensure homogeneous thickness of the finished product. The geometrical parameters of the preform are optimized allowing a better homogeneity thickness compared to existing data. The predicted parameters allow the improvement of the thickness distribution. The standard deviation of the thickness is reduced to about 95% compared to the existing bubble.

scholarly journals Design and Analysis of Parison Blow Molding Using Adaptive Mesh

2021 ◽  
Vol 9 (VII) ◽  
pp. 1945-1950
Author(s):  
Syed Ayesha Yasmeen
Keyword(s):  
Transient Flow ◽  
Thickness Distribution ◽  
Numerical Data ◽  
Adaptive Mesh ◽  
Time Dependent ◽  
Molding Process ◽  
Pet Bottles ◽  
Blow Molding ◽  
Time Dependent Problem ◽  
Stretch Blow Molding

Blow Molding is one of the most versatile and economical process available for molding hollow materials. When polyethylene is stretched, it exhibits strain-hardening properties, which are temperature, pressure, velocity and strain-rate dependent. In this paper, preform is made by extrusion and forced between two halves by pressurization. This process includes isothermal and transient flow of Newtonian fluid in complex geometries simultaneous with structuring and solidification. A time dependent problem is defined and setting material properties and boundaries condition for bottle blow molding. Numerical data available in POLYDATA for a time dependent problem using ANSYS POLYFLOW were applied. Results display in form contours associated with different variables at different time steps and good agreement with the bottle thickness profile is observed. In this paper, the analysis of the stretch-blow molding (SBM) process of polyethylene terephthalate (PET), parison plastic bottles is studied by the finite element method (FEM). A hyper elastic constitutive behavior was calibrated using material data available in literature in variant high temperatures and strain rates and was used in the numerical simulation. Hydrostatic pressure with convention heat transfer has been used instead of a blowing process. Comparisons of numerical results with experimental observations demonstrate that the model can predict an overall trend of thickness distribution. Through the study, it becomes clear that the proposed model is applicable for simulating the stretch-blow molding process of PET bottles, and is capable of offering helpful knowledge in the production of bottles and the design of an optimum preform.

Blow Molding Process Optimization of Amorphous Alloy Tube Blank Based on DEFORM Software

2012 ◽  
Vol 487 ◽  
pp. 525-529
Author(s):  
Yu Qin Guo ◽  
Xin Yang ◽  
Juan Juan Han ◽  
Wei Chen
Keyword(s):  
Amorphous Alloy ◽  
Process Optimization ◽  
Variable Thickness ◽  
Metallic Glasses ◽  
Amorphous Alloys ◽  
Yale University ◽  
Molding Process ◽  
Blow Molding ◽  
Forming Technology ◽  
Application Fields

In recent years, with the increase of the research about forming technology of amorphous alloys, blow molding is explored to process the amorphous shell parts and containers both at home and abroad. Jan Schroers of Yale University found that it can improve the formability of amorphous alloys greatly by adjusting the thickness of plate blank and prefabricating parison. In this article, choosing Zr44Ti11Cu10Ni10Be25 as the study object, plate blanks with variable thickness are prefabricated to optimize the uniformity of the wall thickness of tube blank molded and studies the effects of blowing pressure and material viscosity on the formability of tube blank based on DEFORM software, so as to define the reasonable process parameters, provide theoretic foundation for blow molding process optimization of bulk metallic glasses (BMGs) plate and develop the industry application fields of BMG materials.

Blow Molding Process Optimization of Amorphous Alloy Tube Blank Based on POLYFLOW Software

2011 ◽  
Vol 121-126 ◽  
pp. 3827-3831
Author(s):  
Yu Qin Guo ◽  
Xin Yang ◽  
Juan Juan Han ◽  
Wei Chen
Keyword(s):  
Amorphous Alloy ◽  
Process Optimization ◽  
Diameter Ratio ◽  
Evaluation Index ◽  
Forming Limit ◽  
Process Scheme ◽  
Molding Process ◽  
Blow Molding ◽  
Software Studies ◽  
Simulation Results

Aimed at Zr44Ti11Cu10Ni10Be25 amorphous alloy and based on POLYFLOW software, studies the influence of die inlet diameter, blowing pressure and die transition fillet on the blow molding performance of tube blank systemly, and raises a new evaluation index to evaluate the formability of amorphous tube blank, limit height to diameter ratio (LHTDR) . The simulation results indicate that the forming limit of tube blank can be multiple improved with the decrease of die inlet diameter, blowing pressure has a significant effect on the forming limit which can be improved by decreasing the pressure, and the larger of the die transition fillet the higher of the forming limit in certain range. Finally, a set of reasonable process parameters is given which has great significance for guiding the formulation of blow molding process scheme.

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