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The Seven Classifications of Plastics: Are They All Really Recycled? Recycling Numbers: what do they mean? The recycling symbol we’re familiar with, a single digit number surrounded by a triangle of arrows was designed by The Society of the Plastics Industry (SPI) in 1988 to allow consumers and recyclers to differentiate types of plastics while providing a uniform coding system for manufacturers. The 7 designated polymer groups: PETE: Polyethylene Terephthalate. HDPE: High Density Polyethylene V: Vinyl/Polyvinyl Chloride (PVC). LDPE: Low Density Polyethylene. PP: Polypropylene. PS: Polystyrene. Other mixed resins. Some plastics are easy to recycle and some are not. The easiest and most common plastics to recycle are made of polyethylene terephthalate (PETE) and are assigned the number 1. Examples include soda and water bottles, medicine containers, and many other common consumer product containers. Once it has been processed by a recycling facility, PETE can become fiberfill for winter coats, sleeping bags and life jackets. It can also be used to make bean bags, rope, car bumpers, tennis ball felt, combs, cassette tapes, sails for boats, furniture and, of course, other plastic bottles. Number 2 is high-density polyethylene plastics. These include heavier containers that hold laundry detergents and bleaches as well as milk, shampoo and motor oil. Plastic labeled with the number 2 is often recycled into toys, piping, plastic lumber and rope. Like plastic designated number 1, it is widely accepted at recycling centers. Some Less Commonly Recycled Plastics:- Polyvinyl chloride, commonly used in plastic pipes, shower curtains, medical tubing, vinyl dashboards, and even some baby bottle nipples, gets number 3. Like numbers 4 (wrapping films, grocery and sandwich bags, and other containers made of low-density polyethylene) and 5 (polypropylene containers used in Tupperware, among other products), few municipal recycling centers accept these polymers due to the low rate of recyclability. Hardest Plastics to Recycle:- Items made from combinations of the various plastics or from unique plastic formulations not commonly used are difficult to recycle. These types of products are typically layered (for example multilayer barrier films) or mixed plastic products (like the hard and soft polymers used in toothbrushes). These types of products are imprinted with a number 7 or nothing at all and are seldom recycled and are placed in the regular waste streams (landfilled or incinerated).

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The Seven Classifications of Plastics: Are They All Really Recycled?

Recycling Numbers: what do they mean?
The recycling symbol we’re familiar with, a single digit number surrounded by a triangle of arrows was designed by The Society of the Plastics Industry (SPI) in 1988 to allow consumers and recyclers to differentiate types of plastics while providing a uniform coding system for manufacturers.

The 7 designated polymer groups:
PETE: Polyethylene Terephthalate.
HDPE: High Density Polyethylene
V: Vinyl/Polyvinyl Chloride (PVC).
LDPE: Low Density Polyethylene.
PP: Polypropylene.
PS: Polystyrene.
Other mixed resins.

Some plastics are easy to recycle and some are not.
The easiest and most common plastics to recycle are made of polyethylene terephthalate (PETE) and are assigned the number 1. Examples include soda and water bottles, medicine containers, and many other common consumer product containers. Once it has been processed by a recycling facility, PETE can become fiberfill for winter coats, sleeping bags and life jackets. It can also be used to make bean bags, rope, car bumpers, tennis ball felt, combs, cassette tapes, sails for boats, furniture and, of course, other plastic bottles.
Number 2 is high-density polyethylene plastics. These include heavier containers that hold laundry detergents and bleaches as well as milk, shampoo and motor oil. Plastic labeled with the number 2 is often recycled into toys, piping, plastic lumber and rope. Like plastic designated number 1, it is widely accepted at recycling centers.

Some Less Commonly Recycled Plastics:-
Polyvinyl chloride, commonly used in plastic pipes, shower curtains, medical tubing, vinyl dashboards, and even some baby bottle nipples, gets number 3. Like numbers 4 (wrapping films, grocery and sandwich bags, and other containers made of low-density polyethylene) and 5 (polypropylene containers used in Tupperware, among other products), few municipal recycling centers accept these polymers due to the low rate of recyclability.

Hardest Plastics to Recycle:-
Items made from combinations of the various plastics or from unique plastic formulations not commonly used are difficult to recycle. These types of products are typically layered (for example multilayer barrier films) or mixed plastic products (like the hard and soft polymers used in toothbrushes). These types of products are imprinted with a number 7 or nothing at all and are seldom recycled and are placed in the regular waste streams (landfilled or incinerated).

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Sep 02, 2025 Like 17
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At Rajoo Engineers, we believe continuous learning drives excellence.
A technical training session was conducted by Mr. Chandrasinh Rathore on the topic:
“Awareness and Importance of Assembly Drawing in O.E.M. Industries.”

The session provided valuable insights into the role of assembly drawings in ensuring precision, efficiency, and quality across manufacturing processes. Such initiatives empower our team to stay aligned with industry best practices and deliver engineering excellence.

#RajooEngineers #TechnicalTraining #ContinuousLearning #AssemblyDrawing #EngineeringExcellence #OEMIndustry
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Sep 22, 2025 Like 800
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Two engineering powerhouses, one shared vision - to transform the flexible packaging industry with end-to-end innovation, efficiency, and sustainability.

“We’re blending Indian ingenuity with global ambition. Kohli’s printing and converting excellence and Rajoo’s extrusion leadership will now speak in one language - Performance. Together, we aim to make India the preferred hub for integrated packaging technology solutions for the world.” said Mr. R. N. Doshi, Chairman, Rajoo Group.

“We’re not just combining technologies, we’re combining philosophies and strengths. This partnership is about building smarter, more agile printing & packaging ecosystems that serve the evolving needs of converters worldwide,” said Mr. Kaku Kohli, Managing Director, Kohli Printing and Converting Machines Pvt. Ltd.

Rajesh Doshi Khushboo Doshi Rajoo Engineers Limited Kohli Industries Utsav Doshi Karishma Doshi Sunil Jain #KakuKohli #ArmaanKohli #PallavDoshi Utkarsh Rajeshbhai Doshi #PratikKothari
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Oct 07, 2025 Like 52
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Rajoo Engineers is all set to showcase innovation, precision, and efficiency at Exhibition K, starting tomorrow. Don’t miss the chance to witness our cutting-edge solutions and meet our experts who are shaping the future of extrusion. Be a part of the revolution in manufacturing, see you there!

Join us at K-2025 | Stand No. 16A55

#ExperienceTheExcellence #Rajooengineers
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Oct 09, 2025 Like 235
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Come meet our experts, explore our solutions, and be part of the transformation!

📅 October 8 – 15
📍 Rajoo Engineers Ltd | Hall 16, Booth A55
We can’t wait to welcome you!

#RajooEngineersLtd #K2025 #RajooGroup #BlownFilm #SheetExtrusion #Thermoforming #Extrusion #EngineeredExcellence #InnovationInPlastics #MadeInIndia #FutureOfExtrusion
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