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Some paper products are coated - mostly with plastic - or treated to improve wet strength or grease resistance. Paper and paperboard packaging like pizza trays, French fry trays, Chinese noodle soup boxes, hamburger clamshell trays, etc., are developed by printers utilizing paper-converting equipment such as tray formers.
It is used for protective packaging or for food service trays and beverage carriers. Other typical uses are end caps, trays, plates, bowls and clamshell containers. [1] For many applications, molded pulp is less expensive than expanded polystyrene (EPS), vacuumed formed polyethylene terephthalate (PET) and polyvinyl chloride (PVC), corrugation ...
The key raw material in corrugating is paper, different grades for each layer making up the corrugated box. Due to supply chain and scale considerations, paper is produced in separate plants called paper mills. Most corrugating plants keep an inventory of paper reels. In the classical corrugator, the paper is softened with high-pressure steam.
Later, in 1915 John Van Wormer of Toledo, Ohio, received the a patent for the gable-topped, wax-coated, "paper bottle," a folded blank box for holding milk, calling it the "Pure-Pak." [24] The milk carton could be folded, glued, filled with milk, and sealed at a dairy farm. [25]
In 2004, the boxboard sector stood out with the acquisition of Dopaco Inc., [2] a leader in the packaging products sector destined for the quick service restaurant industry. Norampac proceeded with the implementation, between 2001 and 2006, of several ultra-modern corrugated cardboard mills in Canada and in the United States.
However, there is still an ongoing debate about who first introduced the use of tinplates as food packaging. [5] 1870: The use of paper board was launched and corrugated materials patented. [7] 1880s: First cereal packaged in a folding box by Quaker Oats. [8] 1890s: The crown cap for glass bottles was patented by William Painter. [9]
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The rest of the meal came packed neatly in a waxed paper or laminated cellophane pack. The pack always contained two packages of 8 rectangular K-1 or 4 square K-2 calorie -dense cracker biscuits each, a 4-pack of commercial-grade cigarettes, and either a flat rectangular stick of chewing gum or a square piece of candy-coated gum .