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Normal kraft paper is strong and relatively coarse. It has high tensile strength. The grammage is normally 40–135 g/m 2. Sack kraft paper, or just sack paper, is a porous kraft paper with high elasticity and high tear resistance, designed for packaging products with high demands for strength and durability.
Cardboard is a generic term for heavy paper-based products. The construction can range from a thick paper known as paperboard to corrugated fiberboard which is made of multiple plies of material. Natural cardboards can range from grey to light brown in color, depending on the specific product; dyes, pigments, printing, and coatings are available.
The paperboard sector is mainly looked at in conjunction with the paper industry. The Paper & Paperboard market size (2007) had a value of US$630.9 billion and a volume of 320.3 million metric tons. [5] Of that market 40.1% is European. About 50% of all produced paper is used for packaging, followed by printing and writing. [5]
In mid-2022, producer prices flattened out, and in early 2023 they started free-falling, according to the US Bureau of Labor Statistics. Again, it made sense: Americans were spending more on ...
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This was corrugated cardboard as we know it today. The first corrugated cardboard box manufactured in the US was in 1895. [19] By the early 1900s, wooden crates and boxes were being replaced by corrugated paper shipping cartons. By 1908, the terms "corrugated paper-board" and "corrugated cardboard" were both in use in the paper trade. [20]
In the metric system, the mass per unit area of all types of paper and paperboard is expressed in terms of grams per square metre (g/m 2). This quantity is commonly called grammage in both English and French , [ 2 ] though printers in most English-speaking countries still refer to the " weight " of paper.
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