Common Difficulties of Film Blower and Bag Making Machine

1.What is the function of bottom warming of flat mouth machine?

Increase the tightness of the seal, mostly use the thicker bag, because the bag is four layers, often the upper two layers are rotten, and the lower seal is not firm, so increase the base heating. (for tight sealing)

2.What is the difference between the upper and lower rotation of the film blower?

(1) The upper rotation is 340 degrees and the lower rotation is 360 degrees.

(2) Single screw film blower is commonly used for lower rotation and multi-layer co-extrusion film blower with higher requirements for upper rotation. The cost difference between the two is quite large.

3. Differentiation between coder and thermal transfer?

(1) Code Jetting Machine: The typeface sprayed out in small dots is not clear enough.

(2) Hot transfer: good font effect, similar to gravure press effect

4.Under what circumstances will the flattener spring break?

One: The spring is installed in the wrong way. The correct way is to rotate 7 turns in the opposite direction and then to turn in the positive direction, which is not easy to break.

Two: The rubber bag will break when wrapped in the spring by improper handling.

Three: The rubber roll will break if it is pressed too tightly between the rubber roll and the rubber roll.

5. How to solve the leakage of regenerative material from film blower?

(1) Temperature can be increased appropriately by 10-20 degrees, because impurities are more in the production of regenerative material, and the temperature during production is generally about 10-20 degrees higher than that of film blowing.

(2) Increase the number of times to replace the filter screen and add an additional layer if necessary.

Reasons for air leakage: The recycled material will be mixed with some impurities, sand, etc., the sealing is not very good, so it will leak.

6.Under what circumstances is the single/twin screw and single/dual head recommended for the film blower?

(1) If both industrial and market bags are to be made, we recommend single head single screw for easy replacement of high and low pressure die heads.

(2) The twin screw is used for making larger rubber bag. Single screw cannot meet the extrusion volume. Customers have high requirements on the tension of bags. Express film, food packaging film and medical packaging film all need twin-screw and multi-screw extrusion.

(3) If the order quantity of professional vest bags is large and stable, twin-screw ABA double-mode head can be recommended (advantages of double-mode head of ABA film blower: high output and good brightness of film blown out by good pulling force).

7.Can the 2C thick film on the film blower be scalded?

The key point of this problem is thickness. If blowing PE, the hot-edged film can be hot-edged at 0.2C to 4C. If blowing PO, the thickness is 0.9 to 0.2C. What we need to know is the material and thickness, if too thick, ironing edge is unstable, which can also lead to ironing problem.

8.Where should the thickness of the film blower be adjusted?

Traction frequency conversion, host frequency conversion, module head, the size of steam inside the membrane bubble.

9.55 What is the blow film width and overall height respectively? What are the reducer models and the main motor models?

55 units: can blow 30-90cm, height: 4.8m/5m reducer: 146 main motor: 15KW

10. 45 What is the blow film width and overall height respectively? What are the reducer models and the main motor models?

45 Width: 10-60CM Height: 4m/4.2 or 4.5m Reducer: 133 Main Motor: 11KW

11. 65 What is the blow film width and overall height respectively? What are the reducer models and the main motor models?

65 Width: 600-1200MM Height: 5.2m Reducer: 173 Main Motor: 18.5/22KW

12.Why do side seals use side straighteners?

Because the bags produced by the edge sealing machine are generally self-adhesive bags, the self-adhesive position of the self-adhesive bags can not run off, while the edge straightening machine can exactly correct the effect, so that the film can be conveyed in a straight line when cutting the bags.

13.Why do express bags use hot melt?

Express bags are confidential and self-adhesive strips must be destructive. Hotmelts are very practical because of their low cost and good destructiveness.

14.How many die heads are there for the film blower?

There are many kinds of dies. At present, our company usually uses PE and PO dies. Under the die blown with different materials, it is divided into single-layer die head, double-layer die head and three-layer die head. Two screws will have double die heads and three screws will have three die heads, but it is important to note that single screw also has double die heads. Mainly some customers blow rubbish bags and vest bags. In this way, the tension of the die pair with double die heads is increased.