Understanding Plastic Resin Codes: A Comprehensive Guide for Malaysian Households
When you look at the bottom of most plastic containers, you'll find a number inside a triangular recycling symbol. These numbers, ranging from 1 to 7, represent different types of plastic resins, each with unique properties, uses, and recycling considerations. Understanding these codes is crucial for effective recycling in Malaysia.
The Seven Plastic Resin Codes Explained
Type 1 - PET or PETE (Polyethylene Terephthalate)
This is one of the most commonly recycled plastics in Malaysia. You'll find it in water bottles, soft drink bottles, cooking oil containers, and food packaging. PET is highly recyclable and can be transformed into new bottles, clothing fibers, carpets, and industrial strapping materials. In our workshops, we demonstrate how Malaysian recycling facilities process approximately 45,000 tons of PET annually, with the material being the most valuable in the local recycling market at around RM 1,200 per ton for clean, sorted material.
Type 2 - HDPE (High-Density Polyethylene)
HDPE is found in milk jugs, detergent bottles, shampoo bottles, and plastic bags. It's known for its strength and resistance to moisture. In Malaysia, HDPE recycling has grown significantly, with the material being processed into new bottles, pipes, plastic lumber, and outdoor furniture. The recycling rate for HDPE in Penang alone has increased by 30% over the past three years, largely due to improved sorting systems and community education programs like ours.
Type 3 - PVC (Polyvinyl Chloride)
PVC is commonly used in construction materials, plumbing pipes, window frames, and some food packaging. However, recycling PVC is more challenging due to the presence of additives and chlorine content. In Malaysia, specialized facilities handle PVC recycling, but the infrastructure is limited. We advise participants in our workshops to minimize PVC use where possible and ensure proper disposal through designated collection points.
Type 4 - LDPE (Low-Density Polyethylene)
LDPE is flexible and used in shopping bags, squeeze bottles, and bread bags. While many Malaysian recycling programs accept LDPE, it requires different processing than rigid plastics. Recent innovations in our training programs focus on teaching participants how to identify high-quality LDPE for recycling, which can fetch prices up to RM 800 per ton when properly sorted and cleaned.
Type 5 - PP (Polypropylene)
PP is found in yogurt containers, bottle caps, straws, and food containers. It has a high melting point, making it suitable for hot-fill applications. Malaysian recycling facilities increasingly accept PP, and our workshops teach participants how to identify and separate PP from other plastics. The material can be recycled into automotive parts, industrial fibers, and new food containers, with clean PP commanding prices around RM 900 per ton.
Type 6 - PS (Polystyrene)
Polystyrene includes both solid plastic (CD cases, plastic cutlery) and foam (disposable cups, food containers, packaging materials). Recycling PS is challenging due to its low density and contamination issues. In Malaysia, only specialized facilities can process PS, and we're working with local authorities to expand collection programs. Our current recommendations include avoiding single-use PS products and participating in special collection drives.
Type 7 - Other (Mixed Plastics)
This category includes all other plastics, including polycarbonate, acrylic, and bioplastics. These materials are the most difficult to recycle due to their varied composition. In our advanced workshops, we discuss emerging technologies for handling Type 7 plastics and the importance of source reduction.
Practical Recycling Tips for Malaysian Households
Based on our five years of experience training over 2,500 Malaysian households, here are the most effective practices:
1. Clean Before Recycling: Rinse containers to remove food residue. Contaminated recyclables can spoil entire batches at processing facilities. Even 5% contamination can reduce the value of recycled materials by 40%.
2. Remove Labels and Caps: Many bottles have labels and caps made from different plastic types. Separating these components ensures higher-quality recycling outcomes.
3. Check Local Guidelines: Different municipalities in Malaysia have varying recycling capabilities. In Penang, we accept Types 1, 2, and 5 through curbside programs, while Types 3, 4, 6, and 7 require drop-off at specialized centers.
4. Flatten Bottles: Flattening plastic bottles saves space in recycling bins and transportation vehicles, reducing the carbon footprint of recycling operations by up to 30%.
The Economics of Plastic Recycling in Malaysia
Understanding the economic value of different plastic types helps explain why recycling programs prioritize certain materials. Current market rates in Malaysia (as of December 2025) show PET commanding the highest prices at RM 1,200 per ton for clear, food-grade material, followed by HDPE at RM 1,000 per ton. These prices fluctuate based on global oil prices, demand from manufacturers, and the quality of sorted materials.
Our workshop participants who've started community recycling initiatives report that proper sorting and cleaning can increase the value of collected materials by 50-70%, directly impacting the financial sustainability of their programs.
Environmental Impact
Recycling one ton of plastic saves approximately 1.5 tons of CO2 emissions compared to producing virgin plastic from petroleum. In Penang alone, our trained communities have diverted over 45 tons of plastic from landfills in the past year, equivalent to preventing 67 tons of CO2 emissions.
Join our next Basic Plastic Recycling workshop to learn hands-on techniques for identifying, sorting, and preparing plastics for recycling. Together, we're building a more sustainable Malaysia, one plastic bottle at a time.