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Optimum primer weight for priming films is defined in _____

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in Food Packaging Technology by (63.0k points)
Optimum primer weight for priming films is defined in _____

(a) mg/m^2

(b) μg/m^2

(c) mg/cm^2

(d) mg/mm^2

The question was asked in exam.

My doubt is from Coating and Laminating in Thermoplastics topic in division Thermoplastic Polymers Properties & Processing of Food Packaging Technology

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The correct choice is (a) mg/m^2

To explain: Optimum primer weight for priming films is defined in mg/m^2. The quantity of primer is a critical aspect because thicker primer results in lesser cohesive forces and hence loss of adhesiveness. Thinner primer wouldn’t result in required adhesion.

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