NRDC Technology offer-PLAIN AND PRINTED POLY BAG (Carry bag)

PLANT PARAMETERS
Capacity, TPA	180
No.of Shifts / day	3
Working days / Yr.	300
Land Area, m²	700
Covered Area, m²	500
MANPOWER
Managerial	1
Skilled	6
Unskilled	8
RAW MATERIAL
L.L.D.P.E.	L.D.P.E.
H.M.H.D.P.E.	n-Butyl Alcohol
Printing ink	Colours
Polymer plates	Chemicals
Teflon cloth & adhesive tape	Cotton rags
UTILITIES(Per Tonne of products)
Power, KwH	2800
PLANT & MACHINERY
LLDPE Extruder	Compressor
Corona Treatment unit	Sealing machine
Flexographic Prntg Press	Photo polymer plate making equp
Grinder	Drilling machine

The poly ethylene bags have become an essential materials for any shop keeper, manufacturer or for packaging industry. The shop keepers or manufacturers also use the printed poly ethylene carry bags as very effective tool for advertising. Although the per capita consumption of poly ethylene bags in developing countries is low compared to the developed countries, the demand of these types of bags are fast increasing so as to keep the pace of their rapid development.

PROCESS

The process consists of Sheet making, Printing.

1. FILM/SHEET MAKING

L.L.D.P.E. & H.M.H.D.P.E. raw material is available worldwide in the form of grains in packing of 25 Kgs. This raw material is Extruded in form of film. To extrude natural film, the raw material is put into hopper of the extruder. From hopper the raw material travels to heated barrel. In barrel the grains are melted & pushed into different heated zones of barrel with the help of rotating screw and ultimately to heated die, where it is blown into tubular balloon form. This balloon further is cooled & lay flated and wound in form of rolls on surface winder of the Extruder. To extrude different colours of film, the colour concentrates are blended with the raw material. To Print this film, it is necessary to treat this film when hot, which is done with help of corona treatment equipment at the time of extrusion.

2. PRINTING AND BAG MAKING

Different designs can be printed with help of etched polymer plate on flexographic printing press. The basic raw material required is film in roll form. The L.L.D.P.E/H.M.H.D.P.E. (film roll is put on the unwider of the flexographic machine. There are Six printing stations on a six colour press. The processed polymer plates are mounted on the print cylinder at printing station with the help of double side adhesive plaster. For different colours, different polymer plates are mounted on different stations. Each station is fed with required ink shade where the impression is transferred to the film. The film passes through hot air chamber where the inks are dried and it wound back in rolls on winder. The printed Film rolls are out into different kind of bags (as required) on a bag making machine. These bags are sorted & packed in stacks. Different sizes & shapes of bag can be manufactured on these bag making machines.

National Research Development Corporation, a Government of India Enterprise, is a premier technology transfer Corporation with four decades of experience. It has helped establish over one thousand projects in the small and medium scale sector. The supply of technologies and services to entrepreneurs extend both in the developing and developed countries like USA, Germany, Malaysia , Burma , Nepal, Senegal, Madagascar, Indonesia Philippines, Vietnam, Lanka, Kenya, Brazil, Bangladesh and Egypt.