Sachet Packaging Complete Guide: Definition, Types, Applications, Advantages, and How Packaging Machines Work

I. What Is a Sachet?

A sachet is a small, sealed, single-use flexible packaging, typically made of plastic film, aluminum foil composite, or paper-plastic composite. Its characteristics include small volume (generally 1ml–100ml or a few grams to tens of grams), low cost, and portability.

👉 Common Examples:

Shampoo/conditioner trial packs
Ketchup, salad dressing
Coffee powder, milk powder
Medicinal powder or health supplements

A sachet is not only a packaging format but also a marketing strategy tool, particularly suitable for new product launches and price-sensitive markets.

II. Types of Sachets

Based on structure, sealing method, and purpose, sachets can be categorized as follows:

1. Three-side seal: Three sides are sealed, one side is used for filling. Low cost, widely applicable. Suitable for liquids, powders, and granules.

2. Four-side seal: All four sides are sealed. More aesthetically pleasing, stronger sealing. Commonly used for high-end products.

3. Center seal/Pillow sachet: Sealed in the middle on the back. High production efficiency. Commonly used in the food industry.

4. Shaped sachet: Customizable shapes (e.g., heart-shaped, bottle-shaped). Enhances brand recognition.

5. Multi-lane sachet: Produces multiple sachets at once. Increases production capacity and reduces costs.

III. Application of Sachet Packaging

Sachet packaging covers almost all consumer goods sectors:

1. Food Industry
Seasonings (soy sauce, chili sauce)
Instant beverages (coffee, milk tea)
Sugar, salt, spices

👉 Advantages: Hygienic, pre-quantified, convenient for takeout and food delivery

2. Daily Chemical Industry
Shampoo, shower gel
Skincare product trial packs

👉 Used for:

New product promotion
Free trial marketing

3. Pharmaceuticals and Health Products
Oral powders
Traditional Chinese medicine granules

👉 Provides precise dosage, convenient to carry

4. Agriculture and Chemicals
Pesticides
Water-soluble fertilizers

👉 Lowers the barrier to use, improves safety

IV. Advantages of Sachet Packaging

1. Low Cost, Suitable for Large-Scale Promotion

Small sachets use less material, resulting in a lower unit price, making them ideal for developing country markets and price-sensitive consumers.

2. Increased User Conversion Rate

Consumers are more willing to try low-priced or free small-packaged products, helping brands acquire customers.

3. High Portability

Lightweight and easy to carry, suitable for travel, takeout, hotels, and other scenarios.

4. Reduced Waste

Single-use design avoids product expiration or waste.

5. Enhanced Brand Exposure

Can be used as a gift or promotional tool, significantly increasing market coverage.

V. What Is a Sachet Packing Machine?

A sachet packaging machine is an automated device used to quantitatively fill and seal liquid, powder, or granular products into small sachets.

Common types: Liquid sachet packaging machine, Powder sachet packaging machine, Granule sachet packaging machine, Multi-row high-speed packaging machine

👉 Widely used in automated production lines in the food, pharmaceutical, and cosmetic industries.

VI. How Does a Sachet Packing Machine Work?

Sachet packaging machines typically employ an automated continuous production process. The core steps are as follows:

1. Film Unwinding

The packaging material (roll film) is automatically unwound by the machine.

2. Bag Forming

The film is folded into a bag shape using a mold.

3. Quantitative Filling

Liquid: Pump system

Powder: Screw metering

Particles: Measuring cup system

4. Sealing

Heat sealing technology is used to seal the bag opening, ensuring a tight seal.

5. Cutting and Output

The continuous packaging is cut into individual sachets, outputting the finished product.

👉 High-end equipment also features:

Automatic detection

Coding (production date/batch number)

Multi-column synchronous production

VII. Conclusion

Sachet packaging is not just a packaging format, but also a highly efficient marketing strategy. It helps businesses quickly penetrate the market through low cost, high portability, and high conversion rates. Furthermore, with the development of automated packaging technology, sachet packaging machines are becoming increasingly efficient and intelligent.

If you are looking to increase product sales, expand into new markets, or optimize packaging costs, sachet packaging is undoubtedly a solution worth considering.