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How to start plastic bag making machine plant

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How To Start Plastic Bag Making Machine Plant

# What Is a Plastic Bag?

A plastic bag, often known as a polybag, is a type of container and packaging that is formed of thin, light, and flexible plastic film, or plastic textile. They’re used for various things, including storing, carrying, and delivering groceries, magazines, garbage, chemicals, and a variety of other things. 

Plastic offers several advantages over other materials for carrying, storing, and delivering goods. It is thinner and lighter than other materials, which decreases fuel usage during transportation. Plastic allows for food packaging with great safety and hygienic requirements. They’re more durable, with chemical, moisture, and impact resistance. But, due to the exceptionally long degradation process and problematic handling of plastic bags, it is prohibited both from production and usage in certain countries.

# Development Trends In Future

Because of the environmental impact of plastic, governments and the general public are becoming increasingly wary of many plastic products.

In response to consumer demand and new legislation, many large firms have committed to limit the amount of single-use or less durable plastics in their merchandise. However, it may be difficult for the global economy to altogether abandon plastic bags for purposes of storage and packaging, so many businesses are developing alternative recycling methods.

New products, such as biodegradable polymers and special plastic film industries, are experiencing exponential growth, according to the current scenario. Also, new-type degradable plastic products are industries that are being intended to grow as part of the industrial transformation.

# Types Of Plastic Bags

Plastic Bag Material Types 

Plastic bags are manufactured from a variety of materials, each of which has its own set of benefits for users. They’re also available in a variety of blended forms, shapes, and colours. Let’s have a look at the various types of plastic bags that are currently available on the market.

1. High Density polyethene (HDPE)

HDPE is one of the most widely used plastics, and it has a wide range of properties that make it a good option for making plastic bags. It has high tensile strength, is lightweight, and is quite transparent. It is also water and temperature resistant. Laundry, shampoo, conditioner, household cleaning goods, antifreeze, motor oil and recycling bins are all commonly made from HDPE type of plastic. When these bottles are coloured or tinted, their strength is increased. The USDA and FDA food handling criteria are met by HDPE plastic bags. HDPE plastic bags are also used for storing and packing in restaurants, convenience and grocery stores, and even households.

2. Low-Density polyethene (LDPE) 

Low-Density polyethene is abbreviated as LDPE, and it has great resistance to products with high levels of acid and base, or which contain vegetable oils. Though LDPE bags are not quite as sturdy as HDPE bags, their relative durability, elasticity, and clarity make them ideal for a variety of purposes. Due to their low melting point, LDPE plastic bags are popular for use with heat-sealing and are also used to construct various lightweight, flexible products such as plastic bags for dry-cleaning, magazines and newspapers, packaged foods, fresh vegetables, and trash. Shrink-wrap and stretch film, as well as coatings for disposable beverage cups, are all manufactured by LDPE. LDPE also complies with USDA and FDA food handling regulations and is sometimes also used to manufacture bubble wrap.

3. Linear Low-Density polyethene (LLDPE)

Linear Low-Density polyethene is abbreviated as LLDPE. At lower temperatures and pressures, LLDPE is mass-produced in large quantities. LLDPE has rigid sheer characteristics yet is soft in extension. It has better impact and puncture resistance than LDPE, is used to make thinner films, is chemically resistant, and has strong electrical qualities. Food bags, newspaper bags, shopping bags, and garbage bags are all made from LLDPE type, which has a moderate degree of transparency.

4. Medium Density polyethene (MDPE)

MDPE stands for Medium Density polyethene. MDPE has superior shock and drop resistance, is much less notch sensitive than HDPE, has greater stress cracking resistance, is resistant to acid and base reaction, including oxidants and reducing agents, and has a low water absorption capability, making it a desirable material in industries. MDPE is often used in gas pipes, sacks, shrink film, screw closures, packaging film, among other things. MDPE is also commonly used in garbage bags and in consumer packaging for paper products such as toilet paper and paper towels. MDPE bags, however, are not recommended for carrying or storing bulk materials.

5. Polypropylene (PP)

Polypropylene is sometimes abbreviated as PP. Chemical resistance and chemical strength are two of the most notable characteristics of PP bags. Packaging for consumer goods, plastic parts for several industries, including the automobile industry, unique devices such as live hinges, are just a few examples of usage of PP. PP bags are more transparent than others, and owing to their high melting point, PP bags are ideal for heat sealing. Polypropylene, like other plastic types, complies with USDA and FDA food handling regulations.            

Types Of Plastic Bags For Packaging

Plastic bags can be classified as garbage bags, shopping bags, food saver bags, dust bags, heavy-duty bags, and so on, depending on the function of their packing.

# Different Production Style Of Plastic Bag

Plastic bags come in numerous styles, including Single T-Shirt Bags or T-Shirt Bags on Roll, Self-sealing bags, Zipper bags, Flat Bags or Flat Bags on Roll, and Carry Bags, among others.

# How To Start The Plastic Bag Manufacturing Business

Beginning a plastic bag manufacturing business necessitates a significant amount of effort and understanding. It can be immensely profitable if done properly. The following are a few points to keep in mind when starting a plastic bag manufacturing business:

1. Pick a niche: Plastic bags are used for a myriad of purposes, and there are several types that are in demand. It is essential to narrow down the choices so that your business operations do not end up being chaotic. Decide on the target customers, the type of plastic bag you want to make and the type of plastic material you’ll need.

2. Research: Before you start a plastic bag manufacturing business, conduct intensive research. Learn about the various types of plastic bags you may make and which ones have the highest demand in the market, and about the profitability which can be achieved by doing business in that. Examine operations of companies that have excelled in the same business to have a better understanding of how the plastic bag manufacturing business works. Finally, figure out how much money you’ll need to start your firm, including how much money you’ll need to buy the necessary machinery and raw components. 

3. Design a business plan: A business plan or plan of action is a written document that describes a firm’s key business operations, objectives, and how it intends to accomplish its goals. Designing an elaborated business plan which is well-researched and which incorporates all of the crucial aspects of the business, such as production specifics, types of business operations involved, and measures to take to help the plastic bag manufacturing business reach heights, is critical. One of the most significant advantages of having a skillfully designed business plan is that it facilitates you in obtaining financial assistance from credible sources like banks and investors. 

4. Arrange the capital: The term ‘capital’ is used frequently in the business world to describe how money is used to run a business and grow an economy. The foundation of running a business and funding capital-intensive assets is business capital. Renting or leasing space, raw materials, equipment purchases, labour expenditures, and so on are all areas where a substantial sum of money is required. Estimate how much money you’ll need to start a plastic bag manufacturing business and then approach banks or investors with your business plan to get the required money. Keep all of your important documents pertaining to the business and bank account properly organized so that the process goes more smoothly.

5. Registration: The registration of the company is an important stage. Because plastic is used in the production process, you’ll have to adhere to a number of rules and regulations. Before you start your plastic bag manufacturing business, learn everything there is to know about the registration procedure. Apply for industrial and commercial registration, as well as a licence; and tax registration, which includes both national and municipal taxes.

# Equipment Of Production Plastic Bag

Plastic bags are generally made with three types of machinery: a film blowing machine, a printing machine, and a bag producing machine.

1. Film Blowing Machine

To turn polyethene into plastic film, a film blowing machine is required. The laminating film, packing film, agricultural covering film, textile and apparel bags or film, and other packing materials are some examples of products where a film blowing machine is used. 

There are many different varieties of film blowing machines.

Depending on their structure: 

  • Flat blowing machines
  • Upper blowing machines
  • Down blowing machines
  • Single screw
  • Double-layer co-extrusion
  • Three-layer co-extrusion
  • Multi-layer co-extrusion

Depending on their material: 

  • PE film blowing machine
  • PP film blowing machine
  • PVC film blowing machine
  • Shrink film blowing machine
  • Colour strip blowing film machine
  • Composite film blowing machine
  • Concave-convex button blowing film machine
  • Tear film blowing film Machine 

2. Plastic Film Printing Machine

Flexographic and rotogravure printing machines are two types of plastic film printing machines.

Flexographic printing machines use fast-drying inks and have a high-speed printing process. A flexographic printing machine can print in uninterrupted patterns on a variety of absorbent as well as non-absorbent plastic materials. The rotogravure printing machine is a high-speed intaglio printing system that is used to print on packaging. Because the cost of cylinder production is lower, rotogravure is much more efficient and economical in shorter runs as compared to a flexographic printing machine.

There is a unique machine called a film blowing and printing machine that can blow film and print simultaneously, reducing labour costs. 

3. Plastic Bag Making Machine

Semi-automatic and fully automatic plastic bag making machines, as well as single bag and perforated bag on roll bag making machines, are the most common categories. 

Plastic bag making machines also have two other types: Heat-sealing hot-cutting bag-making machines and heat-sealing cold-cutting bag-making machines.

Heat-sealing hot-cutting bag-making machines: It is heat-sealed first, then heat-cut and cut, and finally heat-sealed and sealed for the heat-sealing and heat-cutting bag-making machine. 

Heat-sealing cold-cutting bag-making machines: It heat-seals with a knife first, then cuts with a cold knife without sealing, leaving the cut open.

# Processes Involved in Making Plastic Bags

Blown film extrusion is a way of manufacturing plastic bags. Melted polyethene pellets are blown into a thin substance and turned into bags.

  1. Pellets of polyethene are put into the hopper of a film blowing machine.
  2. To liquefy the plastic, the polyethene pellets are melted at high temperatures and pressed.
  3. The liquified plastic is blasted upward into a long tube shape using a method known as blown film extrusion.
  4. The liquified plastic is blown upward into a long tube shape using a process known as blown film extrusion. As the plastic tube cools, gigantic rollers flatten it into a fine sheet of plastic.
  5. The plastic is cut to the desired length and width, and then is put onto a huge roll of plastic.
  6. The plastic is printed with desired ink and is given the needed shape.
  7. Each bag is punctured at the top with a large punch, which generates the handles, and the bag’s edges are heat-sealed.

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