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How are Paper Bags Made

Paper bags may be used for a variety of purposes. Its advantage is that it is generally a cheap, simple, and ecological method to store and distribute a variety of items — as long as they aren’t damp or too heavy.

Paper bags are made from paper tree pulp that has been crushed into flat sheets or rolls. These rolls are cut to size, which determines the bag’s height. These cut sheets are then folded over and bonded together on the two parallel open sides. This can be accomplished by pushing the glue’s sides together or by heating and pressing the adhesive. This process results in a basic flat paper bag.

A similar procedure is used to create a more sophisticated flat-bottom pattern. But here, the bottom of the bag has more intricate folds, resulting in a square or oblong bag with an open top. Separate paper handles are then adhered to bags using glue.

Brown bags are often made of kraft paper, but they can also be constructed from any type of paper and in any color. Laminated paper may also be used to make kraft bags. This bag features a plastic covering on the inside to keep moisture out or protect it from moisture in the contents.

Kraft paper food containers may be created in any color and weight. These are usually created out of 60gsm paper and available in a variety of sizes. The weight a paper bag can hold is determined by its size and the strength of the material used. The breaking strain of small bags made of 70gsm kraft paper is 4kg, whereas the largest paper sacks made of 90gsm paper can handle ten times that, with a breaking strain of 40kg.

Read this infographic by Bagitan Packaging for a more detailed explanation of how paper bags are made and where to source a quality food packaging paper box.

How are Paper Bags Made?

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