Imagine a technology that could totally revolutionise packaging and the delivery of goods. That could protect and enclose and which could also feature branding and other information? Well, paper bags did just that when they emerged in the mid-late s in the US.
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But how are paper bags made, what are paper bags made from and what can paper bags be used for? In our guide, we take a look at the ingenuity and simplicity behind these useful everyday packing staples. And show you how they can be used for everything from storing your bits and bobs, to giving gifts the wow factor.
While the inventor of the paper bag is lost to obscurity, the invention of the bags square bottomed design is widely accredited to one Luther Childs Crowell of Wellfleet in Massachusetts.
When was the paper bag invented? While Crowells flat-bottomed bag appeared in the s, one Francis Wolle, a US schoolteacher, invented the first machine to mass-produce these bags as early as the s. Wolle and his brother patented the machine and founded the Union Paper Bag Company, which leads us nicely to how paper bags are made.
Paper bags are manufactured from paper pulp, which is pressed into flat sheets or rolls of paper. These rolls of paper are cut to size, that means twice the required height of the finished bag. These cut sheets are then folded over and the two parallel open sides glued together. This can either be by pressing the glues sides together or heating and pressing.
This makes a simple flat bag made from paper.
To make a more complex flat-bottom design, a similar process is followed. Only, there are more complex folds at the bottom of the bag so that the finished bag is square or oblong with an open top.
For bags with handles, separate paper handles are then fixed using adhesive glue.
What are paper bags made of would, on the face of it, seem to be a silly question: paper. But there are many designs and styles, all made from different kinds of paper depending on what the bag is going to be used for.
Standard brown bags are made from Kraft paper, but it can be made from all kinds of paper and in any colour.
Kraft bags can also be made from laminated paper. This has a plastic coating on the inside to protect the bag from moisture from the goods contained in it or to keep moisture out.
Bags made from Kraft paper can also be designed in any colour and any weight of Kraft paper. These are typically made from 60gsm paper and come in a huge range of sizes.
More sturdy Kraft paper gift bags are made from 90gsm paper and can be coloured, or brown or retro polka dot style.
As with all things paper, it can also be made from recycled paper and recycled Kraft paper. This offers a good, sturdy and environmentally friendly way to package goods, gifts and more. Typically, these are made from strong 110gsm recycled Kraft paper.
Paper bags can be used for so many things. Bags made from paper are a cheap, easy and are a sustainable way to store and deliver all manner of things so long as they arent wet, or really heavy.
How to measure a paper bag is simple: measure its height, width and depth (gusset) multiply these together and you will get its volume.
How much can a paper bag hold depends on its size. These handy bags come in all sorts of sizes from small ones measuring 200x300x100mm right up to ones as big as sacks measuring 450x800x290mm.
How much weight can a paper bag hold depends again on its size and on the strength of the paper used. Small bags made of 70gsm Kraft paper have a breaking strain of 4kg, while the largest paper sacks made of 90gsm paper can take ten times that, having a breaking strain of 40kg.
In between lie the myriad sizes of bags available, each able to take a weight of 40kg or less. To see the full range of available sizes and their relative strengths, take a look at this chart.
For additional advice on paper packaging, our Packaging Experts are here to help you find the right solutions and arrange next day delivery. Simply call us on 542 44 28 or visit www.rajapack.co.uk.
Brown paper bags are a packaging essential but how are they made in and are they really eco-friendly?
Paper bags have been a shopping staple for centuries. Brown paper bags, white paper bags, paper bags with handles or without, there are multiple different types of paper bags that have become part of our daily lives without us even realising.
Have you ever thought about how a paper bag is made though? Or when they first came into use? Weve put together this guide on how paper bags are made in to answer exactly that.
Paper bags have become everyday packaging staples but you might be surprised to learn just how long they have been around. The first paper bag was invented back in the s in the United States. While the very first brown paper bag appeared in the s, it was actually in the s that a US school teacher, Francis Wolle, invented the first machine to create paper bags.
Following his invention Wolle and his brother went on to found Union Paper Bag Machine Company alongside a paper packaging plant in that was capable of producing feet of paper in one minute. That very paper packaging plant is still in operation today! Whilst it was Wolle who invented the machine to actually make a paper bag, the iconic square-bottomed paper bag design that weve become accustomed to was the work of Luther Childs Crowell in the s.
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Who would have thought that the humble brown paper bag would still be such an essential over 150 years later?!
Whilst the process of making paper bags today has advanced from Wolles original designs, the principle remains largely the same. Paper bags are made on large machines and for every 1 paper bag produced, 1 gallon of water is required. The process of manufacturing a paper bag starts with paper pulp, which is essentially thin shavings of wood from trees.
The paper pulp comes from trees that have been dried for at least three years. The dried tree bark is stripped, cut into 1-inch strips and then cooked into pulp using intense pressure and heat.
The paper pulp is then pressed into flat sheets or rolls of paper. These sheets and rolls will be cut to size (usually twice the required height of the finished paper bag) and then folded over. The two parallel open sides will be glued together either by pressing the glued sides together or via heating and pressing. Once complete youll have a simple flat paper bag (like the kind you might get from a sweet shop). If you want to make a more complex design, such as a flat-bottomed bag, you follow the same process but simply include more complex folds along the bottom of the bag in order for the finished paper bag to stand up. Paper bag handles are made separately and affixed with glue.
You might think you already know the answer to this question, paper bags are made of paper, right?
Well, technically yes but depending on the style, design and use of the bag, there are various different types of paper that can be used. Standard brown paper bags are made using kraft paper which can come in any colour (creating coloured paper bags). You can also create paper bags using laminated kraft paper. This creates bags that have a plastic coating on the inside to prevent moisture from soaking through the paper, a particularly good idea for food packaging.
Paper bags made using kraft paper can be any colour, not just brown, and any weight. Typically brown paper bags will be made using 60gsm paper and can come in a wide variety of sizes. As we become more eco-conscious, paper bags can also be made using recycled kraft paper, usually using strong 110gsm kraft paper, for an environmentally-friendly packaging solution. Nowadays paper bags tend to be created using a combination of raw and recycled paper.
The great thing about paper bags is that disposing of them is quick, easy and most-importantly, environmentally friendly.
There are three key ways to dispose of paper bags:
As they are made of paper, paper bags can be recycled so that the paper can be used again, usually in the form of another paper bag.
In order to recycle a standard paper bag, the paper will be shredded, boiled and turned back into paper pulp. This will then be rolled out into new sheets of paper and the manufacturing process begins again. If you want to dispose of your paper bags yourself then one of the main ways you can do so is via composting. Once youve set up your compost bin with garden waste and compostable waste (e.g. kitchen scraps) you can begin adding materials such as paper. And of course, you dont always have to dispose of paper bags right away. Providing they havent ripped or been damaged, you can reuse paper bags multiple times before recycling or composting them.
If you opt to reuse your paper bags then you dont just have to reuse them in their original form. Whilst you can continue to use them as a packaging source until they are no longer usable, you can also use the paper for protecting delicate packages and lining household items such as pet trays.
Generally speaking, paper bags are biodegradable, hence why theyre a great choice for composting as mentioned above.
Thanks to how the paper pulp used to create paper bags is made, from wood chips, the final kraft paper is just cellulose fibres that can be easily decomposed through bacteria when added to compost bins.
In order for a paper bag to be fully biodegradable it needs to be free from ink, plastic coatings and other toxins and contaminators.
Paper bags have long been heralded as the eco-friendly packaging option and for good reason.
The fact that paper bags themselves can be recycled is a big tick for the environment. Whilst the production of paper bags does require trees to be cut down, nowadays most paper bags are manufactured using a mix of recycled and raw materials, resulting in much less impact to our forests. The use of recycled paper in the creation of paper bags also requires less energy, helping to reduce the amount of greenhouse gases the manufacturing plants are emitting.
Paper bags can also be reused multiple times before being recycled, helping to further boost their eco credentials. Of course nothing is ever perfect and there are certain parts of the paper bag manufacturing process that are harmful to the environment. Using a paper bag however is much more environmentally friendly than a plastic alternative
Paper bags can be used for many different purposes including carrying groceries or items youve bought when shopping, carrying your packed lunch or even for giving gifts. Not only do they have many uses but in recent years many people have actively decided to use paper bags over plastic alternatives.
We know that paper bags are considerably more environmentally friendly than plastic ones, but exactly why should you use paper bags over plastic?
After hearing how paper bags are made and how good they are for the environment, we wouldnt be surprised if you want to buy some of your own.
As we all look to take steps to becoming more sustainable and eco-conscious, it's no surprise that more and more people are looking for paper bags. Well luckily for you, paper bags are readily available for purchase, including right here from Bestpac. At Bestpac we produce the highest-quality paper bags and sleeves for bakery and patisserie use.
Biodegradable, sustainable and recyclable, you can be assured that our paper bags use only the highest quality materials and manufacturing processes. For more information on our paper bags and finding the right paper packaging solution for you, our experts are always on hand to help. You can contact them here.
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