Q:Plastic film sealing machine (Dorch) repair

You, I have not seen this model, I do not know is semi-automatic film sealing machine, but also pedal, or hand press?. Pass the picture and see his structure.

Q:Plastic film surface corona treatment, the bigger the better?

With our experience and Shun packaging, plastic film on the surface of the corona treatment is not better, if the surface treatment of plastic film spark is too large, will make the surface film breakdown, aging, luster faded, heat sealing performance of adhesion, strength reduction or inner film variation, is not easy to seal.

Q:Why should a plastic film be affixed after the concrete has been poured?

According to thermodynamic calculation, and the concrete surface temperature difference is not greater than 25 degrees, concrete pouring time after surface covered with a layer of plastic film insulation, timely prevent the conservation of water caused by excessive temperature difference between inside and outside the concrete temperature crack.

Q:Building floor pouring why plastic film underneath?

This is a relatively old waterproof and moistureproof way, the effect is good, and now waterproof materials are multifarious, most of the materials are less than the effect of doing so

Q:How can concrete pavement be cured after being pressed? In general, concrete curing is made of thin films and concrete pavements

When the concrete surface has a hardness, generally gently press no trace, also can be used wet mats or wet sacks covering, sprinkler maintenance should pay attention to water can not be poured directly on the concrete surface, when encountered heavy rain or high winds, wet grass covered in time to pad. Every day with special hand sprinkler maintenance, keep the grass pad or gunny bag moist. The concrete strength of adding water reducing agent can reach 80% or more in 5 days. At this time, the straw mat, plastic film or wet gunny bag can be removed. After the release, the water needs to be maintained for 2~3 days.

Q:How to detect the surface tension of plastic film?

Use a pen and a ballpoint pen to draw lines or write on the surface of the film, and judge whether the lines drawn by ink or ballpoint pens are continuous. Lines can be printed continuously, otherwise they are not processed enough.

Q:How to choose the plastic film for the salt packing bag?

However, since it is a design competition, is it possible for you to design an internal and external package for the sale of edible salt? For example, are now promoting daily limit intake of salt, not excessive.

Q:Why should plastic film be compounded? What are the composite soft packing substrates?

Composite plastic soft packing commonly used are: transparent, color, black and white or color printing plastic composite film packaging, aluminum plastic composite film packaging, metal foil composite plastic film packaging, paper plastic film packaging.1) PE film, polyethylene, flexible packaging, more than 70% of the material is to use PE.2) BOPP film is biaxially oriented polypropylene, which is used in soft packaging3) PET films are polyester films used for printing and compounding4) CPP film, cast polypropylene film with heat sealing property5) PA film, that is, nylon film, barrier high6) PVDC film, barrier high, commonly used in sausage casings membrane7) PEN films are superior to PET in performance, but in view of price problems, there is no large-scale application.8) EVOH coextrusion film, through the EVOH and PE and PP and other coextrusion formed high barrier film9) aluminized film, high resistance film on the surface of PET, BOPP and CPP film.

Q:Can plastic film be printed?

Plastic film printer operation is very simple without drying plate, various types of tools without the need for screen printing and thermal transfer needed, a computer, a plastic film printer, an exercise machine can be completely independent of the printing operation, save manpower, plastic film printer and printing method is simple. Lidengkequ, low requirement for operating crew experience, as long as the understanding of simple image processing software, careful attention to good use, daily maintenance, absolutely can very good use of the plastic film printer.

Q:Keyboard circuit board, film paper and rubber strip, how is it installed?

The rubber strip is pressed on the outside of the film. Generally, the rubber strip is placed on the cover, then the membrane is placed, and then the circuit board is inserted. Then the screw is screwed down to the circuit board, so that it is compressed.