Final answer:
Flat wrap packaging commonly involves blister packaging for non-food items and cling films for various uses. Blister packaging employs a pre-formed plastic blister with a backing for protection and display, while cling films secure items. Other examples include take-out trays, foam peanuts, CD cases, and foam-walled drink cups.
Step-by-step explanation:
Flat Wrap Packaging Techniques
The two most common techniques of flat wrap packaging include the use of blister packaging and cling films. Blister packaging is often used for non-food items. It involves sealing the product between a pre-formed plastic 'blister' and a backing, usually made of cardboard or plastic film. The plastic part is molded to fit the shape of the item, providing a level of protection and a way to display the product visibly. This method is commonly seen in the packaging of small consumer goods like electronics, pharmaceuticals, and toys.
On the other hand, cling film, also known as plastic wrap, is used mainly for securing items during transportation or storage. While cling films are often associated with food packaging, non-food-grade versions exist for industrial or non-edible uses. With the addition of appropriate materials, cling films can also be suitable for containing food products. They provide a tight seal that can be transparent or colored, depending on the application, keeping items clean and preventing damage from moisture or dust.
Additionally, it's important to understand the terms 'packing' and 'cracking'. Packing refers to a process where material is compacted into a container or wrapped around an item to secure it. On the other hand, cracking is a term that refers to breakage or damage, often unintended, that can occur in the product if packaging is not done correctly or if the packaged goods are mishandled during transport or storage.
Other examples of flat wrap packaging include take-out trays, which are often made from foam or plastic designed to hold food securely and maintain its temperature during transport. Foam 'packaging peanuts' are another example, used as filler material within boxes to prevent items from moving and to absorb shock. CD cases protect discs from scratches and breaks, while foam-walled drink cups offer insulation for hot beverages.