Identify Materials And Categorize Recovery

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Identify Materials And Categorize Recovery. Plastic recycling is becoming critical in the contemporary era of extreme resource scarcity. Recycling plastic containers can reduce environmental pollution and create a more sustainable future for our children and grandchildren. By practicing the three steps of “Flushing, Pressurizing, Flattening, and Sorting” and knowing the invoice number for plastic parts recycling, we can do our part in plastic recycling.

Identify Materials And Categorize Recovery


Return Code Guidelines: Classify Wisely for Easy Plastic Returns

Plastics are made of various materials, and proper sorting is crucial to recycling to ensure appropriate reuse. The first step of the “Three Steps to Recycling Plastics” is to rinse the containers and proceed to the “Sorting and Recycling” stage.

The “Material Recovery Code” is a guide to help us sort the plastic wisely. A triangle symbol of an arrow surrounded by numbers is usually marked on commercially available plastics, the plastic recovery material code. Each number represents a different type of plastic, which is essential to assist industry and consumers in categorizing.

According to the Environmental Protection Labeling Regulations, plastic containers numbered 1, 2, 3, 4, 5, and 6 are the only plastic materials that can be recovered and remanufactured. In contrast, the number 7 represents other plastic containers that cannot be recovered. The following are the corresponding mold type numbers:

  1. PET (polyethylene terephthalate)
  2. HDPE (High-Density Polyethylene)
  3. PVC (polyvinyl chloride)
  4. LDPE (low-density polyethylene)
  5. PP (series)
  6.  PS (Polystyrene)
  7. Other (including all plastic varieties beyond the six categories)

Correct classification of plastic containers not only enhances recycling efficiency but also promotes access to rainbow disposal, and reduces the environmental impact. Let’s implement the “Three Steps to Plastic Recycling” together, start from the source, and contribute to a sustainable future!

Identify by material

  • Plastic containers usually have a “Recycling Symbol” on them, stating the material number of the plastic bottle to help you fill in the material. Standard numbers and corresponding materials are as follows: No. 1 (PET): PET bottles, transparent containers (e.g., food containers) No. 2 ( HDPE): opaque containers (e.g., milk bottles, dishwashing detergent bottles) No. 5 (PP): Yogurt boxes, microwaveable containers No. 6 (PS): no-rinse utensils, Styrofoam (not recommended for recycling)

Separating mixed ingredients

  • Some containers may be made of different materials, e.g., cardboard with plastic coating for paper cups. Such containers should be recovered after separating the other materials to avoid affecting the recovery operation.

Other Precautions

  • Rinse well: Rinse the inside of plastic containers to remove contaminants, food residues, or liquids before recovery. Flatten containers: Flattening plastic containers helps to save space and facilitates transportation. Avoid Recovering Contaminated Containers: Plastic oils or chemical liquids. Regular Recovery: The habit of regular recovery avoids plastic waste, which causes environmental problems. Sorting plastic containers is the key to promoting plastic recycling; by following these steps, you can effectively reduce plastic waste and do your part to protect the environment. Let plastic reduction and recovery become a daily routine, and work together to build a sustainable and better future!


Sorting is easy; plastic recycling.

Correctly categorizing and placing containers is essential for adequate recovery. Sorting tips are provided below to get you started:

Quotes for easy judgment

Look for the recovery code at the bottom of the tip container. It is usually located within the triangular arrow symbol.

Sort according to:

  • PET (polyethylene terephthalate): Bowtie bottles, snack boxes, etc.
  • HDPE (High-Density Polyethylene): milk bottles, dishwashing detergent bottles, etc.
  • PVC (polyvinyl chloride): water pipes, raincoats, etc. (bouncing is not recommended).
  • LDPE (low-density polyethylene): cling film, plastic bags, etc.
  • PP (series): Yogurt cups, reinforced lunch boxes, etc.
  • PS (polystyrene): no-wash props, Styrofoam, etc. (recovery is not recommended).
  • Other: contains all plastic varieties other than the six categories (not recommended for recovery).

Container characteristics, classification

  • Bottles and cans: Bowtie bottles, milk bottles, etc.
  • Film Category: cling film, plastic bags, etc.
  • Containers category: yogurt cups, microwave oven lunch boxes, etc.

Special conditions, categorized

  • Small accessories such as bottle caps and lids: It is usually recommended to be removed and categorized separately.
  • Containers with paper labels or aluminum foil: Remove before sorting.
  • Composite containers (e.g., paper cups): Recycling is not recommended, as separating the materials effectively is impossible.

Through proper separation, we can improve the quality of plastic recycling and minimize the negative impact on the environment. Let plastic recycling become a good deed in our daily lives, and together, we can create a more sustainable earth.


Plastic Recycling Conclusion

By understanding the above steps and precautions in recycling plastics, we can quickly get started and do our part for the environment. Every plastic container recycled is a step towards a more sustainable future. Let’s practice plastic recycling together to create a cleaner and better future for our planet.



What types of plastics can be recycled?

  • The types of plastics that can be recycled include No. 1 (PET), No. 2 (HDPE), No. 4 (LDPE), No. 5 (PP), and No. 7 (Others, which includes all types of plastics other than the above six).

How do we recognize different plastic materials?

  • Look for the Plastic Recycling Identification Number (a triangle with a number inside) on the label on the bottom of the plastic container. The numbers represent different plastic materials.

Do I need to clean my plastic containers before recycling?

  • Please rinse the containers before recycling to remove food residue or other contaminants. This helps the recycling plant to sort and dispose of the plastics properly.


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