The production process of cat food bags

Raw material selection: Food grade plastic materials such as polyethylene (PE), polypropylene (PP), polyester (PET), etc. are usually selected, which have good physical properties and chemical stability and meet food safety standards.

Printing design: Design packaging bags based on product positioning and market demand, including elements such as patterns, text, colors, etc. Using gravure printing, flexographic printing and other methods, the designed patterns and text are printed on plastic film. The ink used in the printing process must be environmentally friendly, ensuring that it is non-toxic, odorless, and will not cause pollution to cat food.

Composite processing: In order to improve the performance of packaging bags, such as barrier properties, strength, etc., different types of plastic films are usually combined together through composite processes. Common composite methods include dry composite, extrusion composite, etc. For example, combining PET film with soft PE film that has good barrier properties can ensure the barrier effect of the packaging bag on oxygen and water vapor, while also giving the packaging bag a certain degree of flexibility.

Bag making: Cutting the composite plastic film to a certain size, and then sealing the edges of the film through heat sealing and other processes to form the shape of a packaging bag. There are various forms of bag making, such as three sided sealing, four sided sealing, self-supporting bags, zipper bags, etc. The appropriate bag type can be selected according to the packaging needs and market positioning of cat food.

Principle of sealing degree?

Heat sealing principle: During the bag making process, the edges of the plastic film are heated and pressurized to a certain temperature and pressure, causing the molecular chains on the surface of the film to move and fuse, thereby achieving sealing. The temperature, pressure, and time of heat sealing are key factors affecting the sealing effect, and need to be precisely adjusted according to the material and thickness of the plastic film.

Sealing structure design: In order to enhance the sealing effect, cat food packaging bags are usually designed with some special sealing structures. For example, a zipper bag is sealed multiple times by placing a zipper at the bag opening and utilizing the interlocking effect of the zipper; The bottom of the independent bag usually adopts a special folding design, which can maintain a stable standing state after being filled with cat food and also help improve the sealing performance.

Characteristics and advantages of the product?

Good barrier performance: It can effectively block the influence of external factors such as oxygen, water vapor, and light on cat food, prevent oxidation, moisture, and spoilage of cat food, and extend the shelf life of cat food.

High strength and toughness: Plastic packaging bags have high strength and toughness, can withstand certain pressure and impact forces, are not easily broken during transportation and storage, and protect the integrity of cat food.

Exquisite printing: High quality printing technology can be used to present exquisite patterns and text on packaging bags, attracting consumers' attention and enhancing the brand image and market competitiveness of the product.

Convenient to use: Designed according to different bag types, such as zipper bags for easy opening and repeated sealing, and self-supporting bags for easy placement and display, making it more convenient for consumers to use.

Environmentally friendly and recyclable: With the increasing awareness of environmental protection, more and more plastic packaging bags for cat food are made of recyclable materials, which meet environmental requirements and reduce pollution to the environment.