Stability of a Blown Film Extrusion Process

1999 ◽  
Vol 14 (4) ◽  
pp. 342-349 ◽  
Author(s):  
K.-S. Yoon ◽  
C.-W. Park
Keyword(s):  
Extrusion Process ◽  
Film Extrusion ◽  
Blown Film ◽  
Blown Film Extrusion

Systems for the measurement and stabilization of film thickness in the blown-film extrusion process

Polimery ◽  
1995 ◽  
Vol 40 (10) ◽  
pp. 601-605
Author(s):  
STANISLAW LUTOMIRSKI ◽  
JOZEF MAZUR ◽  
RYSZARD STRZELECKI
Keyword(s):  
Film Thickness ◽  
Extrusion Process ◽  
Film Extrusion ◽  
Blown Film ◽  
Blown Film Extrusion

scholarly journals Characteristics of producing of the polymer films in blow film extrusion process

Mechanik ◽  
2019 ◽  
Vol 92 (4) ◽  
pp. 230-233
Author(s):  
Sebastian Białasz ◽  
Łukasz Garbacz
Keyword(s):  
Polymer Films ◽  
Extrusion Process ◽  
Polyethylene Film ◽  
Molding Process ◽  
Film Extrusion ◽  
Blow Molding ◽  
Blown Film ◽  
Blown Film Extrusion ◽  
Extrusion Blow Molding

In the article specification of blown film extrusion process of thermoplastics was presented. Methods of extrusion subject to products with determine characteristic received in the process where characteristic. In the research, extrusion blow molding process used polyethylene film PE-LD Malen-E were used. Extensive studies of the extrusion process and selected properties of polymer films were used.

scholarly journals Plasticization Effect of Poly(Lactic Acid) in the Poly(Butylene Adipate–co–Terephthalate) Blown Film for Tear Resistance Improvement

Polymers ◽  
2020 ◽  
Vol 12 (9) ◽  
pp. 1904 ◽  
Author(s):  
Do Young Kim ◽  
Jae Bin Lee ◽  
Dong Yun Lee ◽  
Kwan Ho Seo
Keyword(s):  
Lactic Acid ◽  
Adipic Acid ◽  
Acid Ester ◽  
Extrusion Process ◽  
Poly Lactic Acid ◽  
Product Packaging ◽  
Film Extrusion ◽  
Blown Film ◽  
Blown Film Extrusion ◽  
Tear Resistance

The mechanical properties and tear resistance of an ecofriendly flexible packaging film, i.e., poly(lactic acid) (PLA)/poly (butylene adipate–co–terephthalate) (PBAT) film, were investigated via a blown film extrusion process. The application of PLA and PBAT in product packaging is limited due to the high brittleness, low stiffness, and incompatibility of the materials. In this study, the effects of various plasticizers, such as adipate, adipic acid, glycerol ester, and adipic acid ester, on the plasticization of PLA and fabrication of the PLA/PBAT blown film were comprehensively evaluated. It was determined that the plasticizer containing ether and ester functionalities (i.e., adipic acid ester) improved the flexibility of PLA as well as its compatibility with PBAT. It was found that the addition of the plasticizer effectively promoted chain mobility of the PLA matrix. Moreover, the interfacial adhesion between the plasticized PLA domain and PBAT matrix was enhanced. The results of the present study demonstrated that the plasticized PLA/PBAT blown film prepared utilizing a blown film extrusion process exhibited improved tear resistance, which increased from 4.63 to 8.67 N/mm in machine direction and from 13.19 to 16.16 N/mm in the transverse direction.

Effect of Plasticizers on Tapioca Starch-Based Biofilms via Blown Film Extrusion Process

2015 ◽  
Vol 1113 ◽  
pp. 539-544
Author(s):  
R.R. Ali ◽  
W.A.W.A. Rahman ◽  
H. Hasbullah ◽  
R.M. Kasmani ◽  
N. Ibrahim ◽  
...  
Keyword(s):  
Palm Oil ◽  
Melt Flow Index ◽  
Extrusion Process ◽  
Flow Index ◽  
Film Blowing ◽  
Tapioca Starch ◽  
Entanglement Density ◽  
Film Extrusion ◽  
Blown Film ◽  
Blown Film Extrusion

In this study, a series of tapioca starch-based low density polyethylene (LDPE) biofilms were prepared via extrusion process and further using blown film extrusion with various contents of starch. Various contents of glycerol and palm oil based olein as plasticizers, both ranging from 5 wt% to 20 wt% were added to blends. The starch-based LDPE blends were undergo the melt flow index analysis to study its processability before further process by film blowing extrusion. Both film blowing ability and melt indexes displayed the effect of both plasticizers in starch-based LDPE blends. Starch based LDPE biofilms with addition of 5 wt% palm oil based glycerin show large influence on the shear viscous properties of starch polymer melts compared to glycerol. Palm oil based glycerin would decrease the viscosity of starch polymer melt since it can decrease the polymer entanglement density and increase the ease of disentanglement.

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