Now here comes the 2nd most important function of Packaging - Protect & Preserve.
Yes, protect and preserve functions goes hand in hand, and the companies and managers need to first understand the physical damages and preservation method before selecting the packaging material.
Protect - It means, protection from physical damages such as vibration, shock, temperature and humidity, tamper-proof etc.
Preservation - It means, preventing the product's nature from bio-chemical and analytical changes such as impact of various gases, light, food spoilage, deterioration etc.
The most obvious function of any Packaging is Contain.
Its the first step to be considered for designing a package. We have to first understand the product's type, its form, its usage and its nature/reactivity, so the selected packaging can deliver the desired Contain function.
Screen printing is a printing process in which we use a mesh for ink transfer over substrate by using stencil. In Stencil, areas are made permeable so ink can pass and form an image, and areas made impermeable blocks the ink, hence forming a non-image area. A squeegee is is moved across (from top to bottom direction of stencil) screen to fill and open mesh apertures with ink, then a reverse stroke is made which causes screen to touch substrate momentarily along the line of contact. This makes ink to wet the substrate and is pulled out of mesh apertures as screen springs back after blade has passed. One color is printed at one time, so multiple screens can be used to produce a multicoloured image, graphic or design. There are many terms used, which is essentially same technique. Traditionally, this process was known as screen printing or silk-screen printing, because silk was used in process. It's also called as serigraphy and serigraph printing . At present, synthetic threa
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