表面處理的應用：练习题

In the context of paper and board finishing, which process involves applying a clear liquid coating that is instantly cured using high-intensity light to provide a high-gloss, durable, and protective surface?

What is the purpose of applying a Spot UV varnish to a printed board package?

In industrial wood finishing, pressure treating with chemical preservatives is often used for timber intended for fence posts. How does this process differ significantly from applied finishes like wax or oil?

Which of the following is a self-finishing polymer, meaning it can be manufactured with a high-quality surface finish and color inherent to the material without requiring secondary painting?

When finishing woods to enhance their longevity in harsh outdoor environments, which method is most effective for ensuring that chemical preservatives penetrate deep into the cellular structure of the timber rather than just the surface?

Identify one common finish applied to timber products specifically to provide resistance against decay in outdoor environments.

Explain the functional purpose of applying a gel coat during the lamination process of Glass Reinforced Plastic (GRP).

In metal finishing, compare the processes of anodising and galvanising in terms of how they provide corrosion resistance to a substrate.

A high-quality batch of mahogany coffee tables is being manufactured for a luxury furniture retailer. The designer must select appropriate finishes to enhance the wood's appearance and provide protection.

(a) State one reason why mahogany is specifically chosen for luxury furniture in terms of its performance characteristics.
(b) Describe the process and benefits of applying polyurethane varnish to the coffee table surface.
(c) Explain how the application of a stain differs from the application of a varnish in terms of its effect on the timber.

Metal products, such as outdoor garden furniture made from low carbon steel, require specific finishing processes to prevent degradation and enhance aesthetics.

(a) Explain why galvanising is a suitable finish for steel furniture intended for permanent outdoor use.
(b) Compare the process of powder coating with traditional cellulose painting for a batch of 500 metal chairs. Consider environmental impact and durability in your answer.