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Which of the following is a hot-end coating?

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+1 vote
in Food Packaging Technology by (63.0k points)
Which of the following is a hot-end coating?

(a) Tin chloride

(b) Sodium hydroxide

(c) Lithium aluminium hydride

(d) Boron

The question was posed to me in homework.

Origin of the question is Surface Treatment of Glass in portion Glass Packaging Materials of Food Packaging Technology

1 Answer

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by (194k points)
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Best answer
Correct option is (a) Tin chloride

To explain: Hot end coatings consist of tin chloride (which reacts to form tin oxide) or organo-tin. These compounds are applied in vapor form and leave a rough high-friction surface on the glass container, which provides a good adhesive surface for the cold-end coatings. They also supply hardness, fill in minor cracks, and compress the glass surface.

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