a) True b) False Answer: b Explanation: The statement is false. Co-extrusion doesn’t use adhesives for binding ...
View Question________ is a process which combines layers of two or more plastics together at the point of extrusion.
a) Lamination b) Plating c) Co-extrusion d) Calendering Answer: c Explanation: Co-extrusion is a process which combines ...
View QuestionFlexibility of plastic packaging films increases with increasing density.
a) True b) False Answer: b Explanation: The statement is false. Flexibility of packaging films increases with ...
View QuestionThe term BUR in extrusion and calendering of thermoplastics refers to _______
a) Blow Up Ratio b) Bauxime Up Ratio c) Bottom Upper Ratio d) Bottom Up Ratio Answer: ...
View QuestionCompression ratios for single screw extrusion should lie between ____ and ____
a) 2:1, 3:1 b) 1:2, 4:1 c) 2:1, 4:1 d) 1:2, 1:3 Answer: c Explanation: Compression ratios ...
View QuestionTubular Extrusion is also known as _______
a) Flat Film Extrusion b) Blown Film Extrusion c) Slit Die Extrusion d) Cast Film Extrusion Answer: ...
View QuestionWhich of the following is not used for conversion of extruded plastic into sheets?
a) Cast Film Extrusion b) Slit Die Extrusion c) Blown Film Extrusion d) Micro Extrusion ...
View QuestionAs defined by ASTM, the thickness of a plastic film (after single extrusion) should be not more than ________
a) 0.25mm b) 0.50mm c) 0.01cm d) 1mm Answer: a Explanation: As defined by ASTM, the thickness ...
View QuestionCalendering and extrusion are similar processes.
a) True b) False Answer: b Explanation: This is a false statement. Calendering and extrusion are different processes. ...
View QuestionWhich of the following is not a type of calender?
a) I type b) L type c) Z type d) M type Answer: d Explanation: M type ...
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