Something about Printing and Polypropylene Woven Animal Feed Packaging Bag

Something About Printing

There are many kinds of printing, such as leaflet printing, color printing, news printing, coated paper printing and so on. It not only enriches our life but also brings us a lot of spiritual food. The book and newspaper industry is the most basic output industry of printing. Printing makes news spread faster and let more people know.

As the society's demand for plastic flexible packaging increases year by year, plastic packaging is covering the market according to its inherent characteristics of bright colors, novel patterns and convenient use. However, due to the lack of technical materials for manufacturing and material selection in most small and medium-sized packaging color printing enterprises, knowledge has not been popularized, which makes the packaged materials more difficult, the loss is huge, and the packaging business is difficult to expand.

Usually, the printing methods are divided into embossing, gravure, lithography, silk screen and so on. Plastic printing is gravure printing, and the often mentioned gravure printing machine refers to the unit type (or arrangement) gravure printing machine.

Something about Polypropylene Woven Animal Feed Packaging Bag

When the polypropylene woven bag is produced, the sewing technology has strict requirements.

1. The tensile strength of the edge seam, according to the actual production experience, must reach more than 67% of the strength of the base fabric.

2. The tensile strength of the bottom seam must reach more than 42% of the strength of the base fabric.

3. The sewing requirements should be straight, no loose needles and broken threads, no floating threads, hanging needles, no less than three stitches at the starting and falling needles of the woven bag, the length of the sling should be equal, and the seams should be uniform and flat. straight.

4. The polypropylene woven bag is required to be straight and straight, there must be no obvious lack of warp and weft, no obvious defects, no obvious stains on the surface, and the printing pattern of the bag body is clear and the position is accurate.