Recent Lessons

Show all results for ""

Blending & Dosing Basics Quiz

Choose a study mode

Play Quiz

Study Flashcards

Spaced Repetition

Chat to Lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Download our mobile app to listen on the go

Get App

Questions and Answers

What is the purpose of blending material ingredients in plastic processing?

To discard regrind produced from the process
To combine materials in predetermined proportions before mixing (correct)
To increase the cost of custom compounds
To sell the materials to other processors

Why did cost-conscious processors need to find a method for introducing regrind back into their process?

To make the process more complicated
To reduce the quality of their final product
To increase their production costs
To prevent wastage and save money (correct)

What was the main drawback of purchasing pre-compounded custom compounds for processors?

They were more expensive than individual raw ingredients (correct)
They were too easy to feed into the process
They were significantly cheaper than raw ingredients
They were difficult to obtain

What did processors realize about selling their regrind to others for re-processing?

It was a waste of money (D) Signup and view all the answers

Why did processors need a method for introducing regrind into the material stream at a repeatable, measured rate?

To effectively reuse the regrind in their production (B) Signup and view all the answers

What is the purpose of using blending and dosing devices in processing materials?

To reduce material costs and inventories, and improve product quality (C) Signup and view all the answers

What is the function of a doser in a processing machine?

To introduce a measured amount of material into the machine throat (B) Signup and view all the answers

How does dosing work in injection molding?

The doser is calibrated to the shot size of the molding machine (D) Signup and view all the answers

Why might multiple dosing devices be connected to a single machine throat?

To introduce multiple additives or provide rapid changeover ease (B) Signup and view all the answers

What is critical for assuring the proper operation of throat-mounted dosing units?

The mounting frame design (D) Signup and view all the answers

Flashcards are hidden until you start studying