Plastic Food Bags with Zipper

We are manufacturer of Plastic Food Bags With Zipper. A high quality bag will enhance your brand awareness and upgrade your corporate image.

1.good transparency, low density;

2.non-toxic, tasteless;

3.convenient and easy to open;

4.durable, light weight, eco-friendly;

5.easy to make kinds of styles;

6.recycle, disposable;

LDPE (high pressure Low Density Polyethylene) : the relative Density of 0.910 0.925 Polyethylene as Low Density Polyethylene (Low Density Polyethylene).Low density polyethylene wax is a feeling of white resin, its structure is characterized by nonlinear. Molecular weight is in commonly 100000 ~ 100000. It has a lower crystallinity and softening point, has good flexibility, elongation, electrical insulation, transparency, and high impact resistance strength, low density polyethylene with poor mechanical strength, heat resistance is poor, and the other is an obvious weakness environmental stress cracking resistance is poor.

Most of the low density polyethylene used as film products, and most of the film products used for packing. One part was used for agricultural film and architectural membrane. Low density polyethylene packaging film can be used for candy, vegetables, frozen foods, such as food packaging, also can be used as inner film, shrink packaging film, stretch film, heavy packaging film and other non-food packaging film.

A gravure printing operation procedure

Installed version

When installing the plate, pay attention to the left and right sides of the plate, not too tight when the cone is tight, to prevent the copper plate from cracking and loose, and the printing will "escape". Install the rollers according to the printed color sequence. The printed color sequence of printing is gold and silver ink, black ink, original green, original yellow, original red (magenta), white plate. When printing is just the opposite: white ink, magenta ink, yellow ink, green ink, black ink, gold and silver ink.

Top scraper

The blade usually adopts thin steel sheet, and the thickness is between 0.15 and 0.55mm.Scraping blade with the Angle between the tangent printing roller contact between 15 ° to 45 °, and less than 15 °, the ink is not easy to scrape, 45 °, the heavy damage of plate and scraper, easy to scratch plate chrome plating layer. 

The scraping ink is also placed in the middle of the clamping plate with the hard knife liner, and bolted with bolts. The bolt should be tightened symmetrically from the center to the left and right to remove the blade. The length of the blade sticking out of the blade is 10-20mm. The length of the blade is long, the blade is soft, not easy to scrape, too short, rigid, and scratches are too big, and the blade is damaged. The thickness of the hard knife liner is 0.8-1.8mm.