Monday, June 4, 2018

The History of Paper Bags

Paper bags are bags made of paper; usually they are brown kraft paper or white kraft paper. Commonly used for shopping, it is convenient and excellent to print and promote individual branding on the bag. There are so many paper bags in our life, but who knows when was the first paper bag used?

In 1852, Francis Wolle, a schoolteacher, invented the first machine to mass-produce paper bags. Wolle and his brother patented the machine and founded the Union Paper Bag Company.
In 1871, inventor Margaret E. Knight designed a machine that could create flat-bottomed paper bags, which could carry more than the previous envelope-style design.[citation needed]
In 1883, Charles Stilwell patented a machine that made square-bottom paper bags with pleated sides, making them easier to fold and store. This style of bag came to be known as the S.O.S., or "Self-Opening Sack".
In 1912, Walter Deubener, a grocer in St. Paul, Minnesota, used cord to reinforce paper bags and add carrying handles. These "Deubener Shopping Bags" could carry up to 75 pounds at a time, and became quite popular, selling over a million bags a year by 1915. Paper bags with handles later became the standard for department stores, and were often printed with the store's logo or brand colors.
Plastic bags were introduced in the 1970s, and thanks to their lower cost, they eventually replaced paper bags as the bag of choice for grocery stores. With the trend towards phasing out lightweight plastic bags, though, some grocers and shoppers have switched back to paper bags. It is also much more environmentally friendly.
In 2015, the world's largest paper shopping bag was made in the UK and recorded by Guinness World Records.

Nowadays, people concern about environment problems. All countries are starting to reduce, even prohibit using plastic bags.  Please follow us and use paper bags in the future to protect our earth!

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What Is White Card & SBS ?

Q. What is white card? 
White card is a general designation of paper material made paper box.
And in this article, we are going to talk about a type of white card, Solid Bleached Sulphate (SBS)

Q. What is SBS paper board mean in the printing and packaging?
SBS, or Solid bleached board (SBB), is the highest quality and most expensive paper board substrate. It is produced from bleached virgin wood pulp.

It can easily be cut, creased, hot foil stamped and embossed. Its other properties, such as being hygienic and pure with no smell and taste, make it usable for packaging aroma and flavor sensitive products such as chocolate, cigarettes and cosmetics.

Common used of SBS are health and beauty packaging, pharmaceutical packaging and frozen food packaging.

Q. How SBS is made?
This grade is made purely from bleached chemical pulp and usually has a mineral or synthetic pigment coated top surface in one or more layers (C1S) and often also a coating on the reverse side (C2S). It is a medium density board with good printing properties for graphical and packaging end uses and is perfectly white both inside and out.
SBB (C2S) construction:
1 - Coating
2 - Bleached chemical pulp
1 - Coating
Not drawn to scale
The surface brightness is 90 % ISO – top surface roughness is less than 1.2 microns PPS – Hunter Gloss of top surface more than 75 %

SBS– Available in 200 to 600 GSM – Suitable for all types of Printing Process – Considered as premium grades for packaging and graphical purposes – Suitable for packing aroma and flavor sensitive products – In general SBS are superior when purity good appearance and runnability of the packaging material are required.

As the picture, it is the cake paper box with SBS paper material.

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