paper Bag Machines

	ID 2371	Holweg CP 24 bag maschine	Detail
	ID 2366	Holweg RS 1 parforations maschine	Detail
	ID 2335	Fischer & Krecke Maxima 26 + F&K Optima AV 3 colors paper bags	Detail
	ID 2340	Algewa sewing	Detail
	ID 2348	Windmöller & Hölscher Matador S 1 paper bags machine	Detail
	ID 2339	Windmöller & Hölscher Triumph 2 square bottom paper bag	Detail
	ID 2349	Holweg RS 26 flat paper bags	Detail
	ID 2373	Holwer RS 2 with windows unit France bags maschine	Detail
	ID 2376	F&K Maxima 31 Flach und Seitenfaltbeutel Maschine bag maschine	Detail
	ID 2375	Holweg RS 1 perforations bag machine	Detail
	ID 2365	Windmoller & Holscher Triumph 1 paper bags machine	Detail
	ID 2336	Fischer & Krecke Maxima 31 + 2 colrs printer + wax unit paper bag	Detail
	ID 2351	Windmöller & Hölscher Triumph 2 Paper Bags Making Machine	Detail
	ID 2379	Holweg RS26 Flat paper bag machine flate bags maschine	Detail
	ID 2363	Windmoeller&Hoelscher Triumph 2 square bottom bag	Detail
	ID 2369	Windmoeller & Hoelscher Triumph 3 bag square bottom sos	Detail
	ID 2385	FISCHER & KRECKE 31BB	Detail
	ID 2393	Windmoeller & Hoelscher TRIUMPH 3 squary bag maschine	Detail
	ID 2381	Windmoeller & Hoelscher plastic bags PLASTICK BAGS	Detail
	ID 2345	Windmoeller & Hoelscher typ CL bag machine	Detail
	ID 2322	Windmoeller & Hoelscher Triumph 3 S cross bag	Detail
	ID 2399	Fischer&Krecke Combi 0 SQUARE bag maschine	Detail
	ID 2398	Windmoller & Holscher T1441 Bag Handle Machine	Detail
	ID 2367	Manzoni Seriana bag machine	Detail
	ID 2400	W&H Matador S1 perforation BAG MACHINE	Detail
	ID 2404	Windmoller & Holscher Triumph 4 SOS Bag Machine	Detail
	ID 2406	Printer Fischer&Krecke printer	Detail
	ID 2411	W&H QMS 993 Windmoler&Hoerscher printer	Detail
	ID 2412	Fischer&Krecke Combi 2a with PAPER BAG MACHINE	Detail
	ID 2426	W&H TRIUMPH 3 WITH PRINTER bag making maschine	Detail
	ID 2431	Fischer & Krecke Combi 0 , BB 11 servo paper sos bag maschine	Detail
	ID 0		Detail
	ID 2432	Fischer & Krecke 23 BB paper sos bag maschine	Detail

PAPER BAGS

Paper bags, sacks and packaging

 Paper bags, sacks and packaging are made of paper, typically combined with other materials such as laminate or foil, which improve the product properties, chiefly its strength and water resistance. Processes that use combinations of these materials also enable high-quality printing, making the paper bags and various paper packaging attractive to the end user.

 Single-wall paper bags

 Single-wall paper bags are most commonly used in shops. They include food bags, bread bags, and recyclable (brown) bags. They are all made from a single layer of paper and can be printed on. The manufacturer's or vendor's logo is the most common theme.

Single-wall bags are not water-resistant, but they can be laminated, for example.

 Multi-wall paper packaging (sacks)

 Multi-wall paper packaging is made from multiple layers of sack paper. Sacks made from it are very strong and typically intended for transporting larger volumes. Typical examples are bags for cement, animal fodder, larger packs of food such as sugar, flour, and so on.

 Bag bottom shape

 Paper bags were handmade, only by gluing the side walls together, until 1870. Bags were improved by using a flat rectangular bottom and a bag-making machine. At present, bags are made with various bottom shapes depending on their use: rectangular, square, or hexagonal. The cone is a special paper bag shape, mostly used in the food industry.

 Materials for making paper bags

 Paper, foil or paper with foil are the basic materials for making paper bags and packaging. The process of making the final shape of the paper bags - by gluing or fusion - is chosen depending on the material used.

Combinations with other materials are used to modify the paper bag's properties, especially to improve its strength and water resistance.

Sack paper

 Sack paper is used for larger paper bags and packaging, especially for multi-wall paper packaging such as paper sacks as well as shopping bags, etc.

Sack paper is made of softwood cellulose. Microcrepping is used in the manufacturing process to make the material porous and elastic. The paper has to be both elastic and strong. Sack paper can be coated with polythene to increase its resistance to moisture or bacteria.

 Recycling paper bags

 Bags, shopping bags and sacks made of paper are fully recyclable. However, increased attention is required when disposing of products that combine paper with other materials.

History of paper bag manufacturing

 

The US inventor Margaret Ethridge Knight (1838-1914), holder of 87 US patents, invented the paper bag-making machine. Her other inventions include the calculator, the rotary motor, the shoe cutting machine, and the sash window frame.

 After the Civil War, Margaret Knight worked in a paper bag factory in Massachusetts. She realized it would be much more practical for the bags to have a flat rectangular bottom. Until then, bags were made by simply gluing the side walls together.

 Margaret E. Knight made a wooden model of a machine for making flat-bottom paper bags, but the patent office required a metal model to certify the patent. She therefore had one made. However, Charles Annan copied the metal bag-machine model in the workshop that was making it, and had it patented himself. This led to a lawsuit in which Margaret E. Knight was awarded the patent in 1871. She established Eastern Paper Bag Co. together with an investor, which was known as the "mother of lunch bags".

M. E. Knight was awarded patent no. 116842 on 11 July 1871.

 Paper bags are made without or with printing. Bag printing is done when the bag is still just a strip, before the shape is formed. Another material, better suited to better-quality printing, is applied on the base paper layer to improve the printing result, especially on shopping bags. Coating or laminating machines are used for this treatment.

 

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