Comparison of advantages between constant tension models and traditional models:

Firstly, the appearance has been optimized by replacing the previous text with a touch screen, simplifying the complex operations as shown in the figure. We have added simulation animations on the touch screen; And universal operation symbols, etc.

　　　　

Secondly, this machine is a film holder that can control the film release speed and tension through digital display and adjustment, thus solving the problem of tightness during packaging. At the same time, the digital display also makes it easy to know the tightening force of the film on the goods at a glance, making packaging more intelligent, diversified, and simplified.

Thirdly, a 1:3 pre stretched constant tension film frame is used, which can provide a constant tension at the set tension value and stretch the raw material film by three times before packaging the goods. The original 500mm wide stretch film is pre stretched at a ratio of 1:3, and the width is kept at around 450mm to minimize the packaging of raw materials.

Fourthly, this constant tension film frame has undergone a brand new transformation on the drum. Through years of experience and analysis, McGonagall Company has made breakthroughs and improvements in areas where membrane racks are prone to quality problems in order to extend their service life and increase product safety. Firstly, a rubber drum is used, which has stronger wear resistance compared to self wrapping rubber drums. In terms of quality, the rubber drum is less likely to fall off, and in terms of packaging effect, it will not damage the transparency of the stretch film; Secondly, a thicker galvanized drum was used to replace the aluminum drum, which solved the problem of aluminum pipe breakage and bearing damage during the use of the aluminum drum. Thirdly, the door handle has been replaced; Make closing the door smoother and simpler (this door is the movable cover door mentioned later). The advantage of adding a movable cover is that it increases the safety factor during the film application process, eliminates the risk of accidentally stirring hands into the drum during film penetration, and makes mold penetration simpler. Fourthly, an emergency stop device is installed at the bottom of the membrane frame (this function is optional). When the membrane frame descends, the emergency stop device at the bottom of the membrane frame touches an obstacle and the whole machine stops running immediately, thereby achieving foot injury when the membrane frame descends. Number five: In terms of appearance, we have adopted a sliding style for the membrane frame cover, making the entire membrane frame more artistic and three-dimensional.