If you ever transported groceries from the store, or packed a lunch for work or school, chances are you're familiar with Margaret Knight's invention—the flat-bottomed paper bag. This was the most famous of several inventions that Knight patented at the end of the 19th century.
Some paper bag printing machines, also called flexographic printers, are fully automatic, while others are semi-automatic. There are also the kraft paper printing machines and China paper bag flexographic printing machines. The most popular on the market are digital paper bag printing machines.
The first version of the paper bag, invented by Francis Wolle in the early 1850s, was an envelope-shaped bag, which was limited in terms of its durability and amount of interior space.
Back in July of 2016, Apple filed a patent for a paper bag – here in May of 2017, Apple has been granted that patent.
Margaret Knight invented a machine that could automatically cut, fold and glue flat-bottomed paper bags. Her revolutionary invention enabled the mass production of paper bags by performing the work of 30 people with one machine. Born in York, Maine, in 1838, Knight enjoyed working with her hands from an early age.
Margaret Knight (1838–1914) applied for a patent using this model to demonstrate her machine that folded and pasted flat-bottomed paper bags. She was granted patent number 220925 for the invention in 1879.
Can you recycle a paper bag? The majority of paper bags can be recycled. However, your paper bags may get rejected by the recycling center if they are made with a combination of paper and plastic; contain a plastic lining; are wet or soiled; or have permanently affixed handles or adornments made of other materials.
You absolutely can get a patent on a bag. There's even an entire classification in the IPC (International Patent Classification) just for backpacks (IPC A45F).