Innovation

1. Manufacturing technique of multi-layer co-extruded film

Generally speaking, multi-layer co-extruded technology is to melt and extrude different resin raw materials with different functions by 5 or more extruders, integrating advantages of various materials. It helps to control cost effectively and adjust the film structure based on demand with wide application scope.

In the field of flexible packaging Composite film, the frequently-used composite substrates include: biaxially polyester film (BOPET), Biaxially oriented Polypropylene (BOPP), biaxially oriented nylon film (BOPA),Casting polypropylene film(CPP), casting polyethylene (CPE), blowing PE, etc., and part of the films above with surface treatment of coating or steam modification. Besides the traditional substrate materials above, with the rapid development, the co-extruded composite film is also widely used in flexible packaging.

Ink is an essential material used in printing, serving as the substance that forms textual and graphic information during the printing process. It directly determines the tone, color, clarity, and other aspects of the images on the printed product. With the advancement of printing technology, the variety of inks continues to grow, and there are various methods of classification.

Pasteurization, also known as low-temperature disinfection or cold sterilization, is a method of disinfection that kills bacteria at relatively low temperatures. Widely used in food processing, it preserves the freshness and taste of food while minimizing the loss of nutritional components.

Packaging’s tensile strength and elongation are essential when it comes to the packaging strength. The heat sealing strength, pressure resistant property, drop performance and puncture resistance of packaging are all closely related to it.

(1) Biaxially Oriented Polyester Film Production Process

 1.Ingredients and Mixing: The primary raw material required for the production of biaxially oriented polyester (BOPET) film is polyester film masterbatch. Depending on specific requirements, substances such as silica, titanium dioxide, calcium carbonate, etc., can be added. Additionally, different types of polyester film masterbatch, such as APET or PETC, can be chosen based on the production process requirements to achieve specific functionalities.

The packaging requirements of sauce packaging are as follows:

     1. High oxygen resistance / humidity resistance: high fat content in food, oxygen resistance to avoid oxidation and deterioration, odor, taste deterioration, nutritional value reduction and other conditions.

 Slitting operation is an important link in flexible packaging production, the quality of slitting will directly affect the quality of pouch making and automatic packaging film.