Plastic, Blown Film Extrusion Offering Positives With Quality Machinery

To run a machine which gives out high quality products, the quality of the machine and its working process needs to be robust. It is more of a norm in the plastic industry nowadays, because the quality of these sheets and bags are to be robust for meeting regulatory standards. The plastic extrusion machinery is supposedly necessary to ensure that there is generation of products of plastic sheet, with high tensile strength but with smoother surfaces. This is possible only if the machineries are of the best quality, as in case of die shaped hangars and T-shaped structures. Hence, plastic extrusion machinery manufacturers like Reifenhauser (India) Marketing Ltd ensure that they are using the top of the range machines, which will create the best results when the molten material passes along the tubing. 

For different types of plastic products, the machines are also needed to be different with individual efficacy

Plastic products are usually developed through simple plain extraction method but some of the demands are from the blown film extrusion methods. In this method, the machinery is not only different, but the products generated will have the rounded bag like shapes. From this kind of blown film extrusion machine, plenty of plastic bags can be generated and packed when such large scale production is targeted. In this method, the molten plastic falls in different method than the straight T shaped machines. The equipments are necessary to be checked out, with authorised personnel, because their working systems are quite different. 

So, the modern day blown film extrusion machine manufacturers are taking care to come up with large roller machines as well as the small sized equipments. To take advantage of such facilities, the blown film has had tubular structure from the time it is converted into plastic after passing through a rigorous process. For the manufacturers, it would be a great theme, if the extrusion and blowing are done in the same machines and this has greatly transformed the manner in which the plastic industry is shaping up in recent times. Many of these units are having the extrusion and blowing of plastic materials in this manner, where the machineries are hugely instrumental in giving the quality to these plastic films.

Blown Film Extrusion

Reifenhauser India is maker and suppliers of plastic expulsion machinery including multilayer blown film Machine, mono layer blown film plant and expulsion covering overlay plant from Mumbai, India.

Advantages and disadvantages of Rotogravure Printing Machines

Rotogravure Printing Machine carries out the process of engraving image onto image carrier in the name of intaglio printing. This Digital printing machine makes use of rotary printing press and is widely used for various commercial purposes including cardboard packaging, printing of postcards and magazines etc… during this process, ink is directly applied to cylinder which is then transferred to substrate. A single printing unit comprises of the following components:

• A dryer
• Impression roller
• Doctor blade assembly
• Ink fountain
• Gravure cylinder (otherwise known as engraved cylinder) with varying circumference
  
  
  
  
  

The major characteristic feature of this Rotogravure is its outstanding density range which makes it, the better choice for photography and fine art reproduction. This industrial printing mechanism is capable enough to deliver enhanced quality of printing experience. One can make use of this printing more efficiently in long-run magazines that exceed more than 1 million orders like furniture laminates, wall papers, advertisement inserts in newspapers, consumer packaging, catalogs for mail order etc…where one need great consistency and high quality.

The additional advantage of this Digital printing machine is its highly flexible packaging efficiency. Various substrates like BOPP, Polyester, Polypropylene and polyethylene which are available at varying thickness between 10 and 30 micrometers. Various other appreciable features are:

• Very low cost running
• Unbelievably high volume of production
• Reproduction of excellent quality image
• Extended self-life of printing cylinders that can go through maximum runs without the problem of image degradation.

The disadvantages of this Rotogravure Printing Machine are:

• High initial investment
• Millions of copies should be made to make profit
• Rasterized texts and lines
• Cylinder preparation takes very long time

Overall, this machine is one of the finest invention by man.

High quality machines for lamination and recycling machines ventured out for Indian market

The laminating machines are highly beneficial in many aspects. They can be deployed to protect the documents and thereby increase their shelf life. One can use this machine to protect various items like business cards, menus, documents, posters, photos and many more. There are various types of laminating machines available in the market but the most widely used ones are cold laminators, roll laminators, pouch laminating machines and also wide format laminating instrument. Each of this type carries their own jobs that differ slightly from the other. Though there are many companies to manufacture recycling machine and laminating machine but only very few make quality machinery that is highly durable and user-friendly. These equipments are necessary and actively involved in designing and manufacturing the machines in Indian market, so that the best quality laminating machines can be designed in the country itself. Most of the companies utilizing such laminating machines can easily design such features and ensure that there is proper supply of the products.

All types of laminating machines are required to cater the needs of wide range of customers. Roll laminators manufactured by this company is used in printing shops, schools and offices as it can handle varied jobs effectively. It can also handle various shapes and sizes and make use of heat to laminate the items.

Cold laminators manufactured by them are the effective solution when presence of heat creates any issue for the laminating material. These machines make use of materials that are self adhesive and make use of cold materials or UV inhibitors which in turn make use of reflective sheeting and transfer tape to laminate items. Pouch laminating machines can deliver studier and thicker lamination that are pre-sized. These machines are mostly employed to laminate photos, ID cards and various other materials that need a highly durable cover.

The Extrusion lamination plant of this company is highly suitable to deliver exclusively slim layers of LDPE and PP. Lining material is later on added to its packaging components. The Extrusion lamination machine is the ideal solution for pp coating, Idpe coating lamination, pet coating lamination, Aluminum foil and paper coating, woven sacks, metalized polyester based coating paper, BOPP film coating extrusions lamination and HDPE woven fabric coating and many more. The plastic recycling machine have their stand in the market and possess strong endurance and also cost effective.

The latest technology in film manufacture – Blown Film Extrusion

One among the recent development in the field of film manufacture is this Blown Film Extrusion which is also referred as Tubular film. This process covers the extrusion of plastic through circular die and later on followed by a bubble-like expansion. There are various advantages in manufacturing film following this new technology. This technique can be employed to manufacture multi-layered co-extruded films that carry high barrier advantages like food packaging. They are capable to allow uniformity in mechanical properties, to get rid of end effects like presence of irregular temperature and edge that may result from the flat die form of film extrusion.

With this blown film extrusion one can control the width of the film and also its thickness by controlling the air volume inside the bubble along with the output of extruder and the speed of haul-off. This technology also helps to produce both gusseted and flat tubing in single process. In this process, they extrude plastic melt through annular shaped slit die in order to form thin size wall tube. They introduce air in its centre resulting in a balloon shaped structure. An air ring blows at high speed into this hot film in order to make it cool. The tube is then continued in the upward direction while cooling till it pass the nip rolls where it gets flattened resulting in ‘lay-flat’ film tube. It is then withdrawn with rollers. The film is then kept in its original form or it can be slit to make two flat shaped film sheets. Materials that are more commonly used include polyethylenes, pp, evoh and pa. 
 

The ratio of expansion between blown tube and die should be 4 to 1.5 times of the diameter of die. One can also control the drawdown that is present between the cooled films and melt wall thickness in both the longitudinal and radial directions by changing the air volume that is present in bubble and also be adjusting the speed of haul-off. The major advantage of this technique is that one can make use of recycling plastic and hence the process becomes more environment friendly.

Blown film produced from recycling plastic can be employed in both sheet and tube form. The technology can be deployed in industry packaging, consumer packaging, laminating film, barrier film, medical products packaging, agricultural films and many more.