The laundry detergent packaging bag is a soft packaging form made of flexible composite materials, mainly used for containing, protecting, storing and transporting laundry detergent products. Its core purpose is to replace or supplement the traditional hard plastic bottles, achieving a reduced, environmentally friendly and economical consumption model. It has evolved from the traditional auxiliary packaging role to become the mainstream choice in the current market, especially dominating the refill pouch sector, representing an important trend of the cosmetics industry's transition towards green and sustainable development. It has become a key force driving the sustainable development of the cosmetics industry and has a very broad application prospect in the future.
The packaging bag of laundry detergent is usually made by combining several layers of materials with different functions:
Usually made of PET (polyethylene terephthalate) or BOPP (biaxially oriented polypropylene) films. These materials have smooth surfaces and good printing adaptability, enabling the presentation of vivid and exquisite patterns and brand information, playing a crucial marketing role.
This is the most critical functional layer, usually made of aluminum foil (AL) or aluminum-coated film (VMPET). Its main functions are:
Barrier against oxygen and light: Prevents the active ingredients in the laundry detergent (such as enzymes) from deteriorating due to oxidation or exposure to light.
Barrier against water vapor: Prevents the evaporation of the liquid inside the bag or the entry of external moisture, maintaining the concentration and stability of the product.
Barrier against odors: Locks in the fragrance of the laundry detergent, preventing it from evaporating and losing its scent.
Usually made of PE (polyethylene) or CPP (laminate polypropylene) films. These materials have excellent heat sealing properties, ensuring the sealing integrity of the packaging bag, preventing leakage, and their chemical properties are stable, not reacting with the laundry detergent.
1. Classified by function:
Refill Pouch: The main form. After purchase, consumers pour the contents into the original durable bottle for use, perfectly embodying the "circular economy" concept.
Spout Pouch: Comes with a screw cap and an opening, can be used directly without an additional bottle. It combines the environmental friendliness of the bag with the convenience of the bottle, representing a high-end trend.
One-time/Travel Pack: Small capacity design, meeting the immediate washing needs for travel and outdoor activities.
2. Classified by material:
PE (Polyethylene) Composite Film: The most common type, with good flexibility, moisture-proof properties, and sealing performance.
PET/PE Composite Film: The outer layer is stiffer, and the printing effect is more exquisite.
Recyclable/Degradable Materials: Such as fully PE structure (easy to recycle) or biobased materials, are the future development direction.
3. Classified by bag type:
Three-side Sealed Bag: The most common type, with simple process.
Self-standing Bag: Has a supporting structure at the bottom, can be placed upright, convenient for display and pouring.
Special-shaped Bag: Made through die-cutting into special shapes, enhancing brand recognition.
