Boss Chen from a seasoning factory in Shandong came to our workshop with half a bag of spicy sauce that was leaking oil. The crooked indentation at the seal of the plastic bag was like a thorn in the hearts of all technicians. "From Shandong to Yunnan, it leaked like this after three days of bumpy ride on the road." Boss Chen's wry smile made us more determined: the value of the heat-sealing packaging machine should be reflected at the moment when the goods arrive at the terminal shelf.
Our factory has been engaged in heat-sealing packaging machines for more than ten years, and we have seen too many cases of "sealing but not sealing firmly". When we transformed the production line for freeze-dried fruit and vegetable companies last year, we found that the sealing strength of their equipment dropped by 20% in a low temperature environment. The technical team spent three days in the cold storage to debug and found that the traditional temperature control system had a lag in response in a -18¡æ environment, which gave rise to the current adaptive temperature control module.
The newly developed heat-sealing packaging machine seems to have a pair of "temperature eyes" and can automatically compensate for heat according to environmental changes. Last month, the ten devices sent to Hainan were sealed 15% faster than in the inland in the face of a humid and high-temperature environment. Operator Lao Zhou said vividly: "In the past, adjusting the temperature was like burning firewood, but now it is like using a gas stove - the temperature can be changed at any time."
Behind the improvement of sealing strength is the persistence of material engineers. We have tested more than 30 alloy materials and finally selected aerospace-grade nickel-based alloy as the heating element. The thermal attenuation rate of this material is 40% lower than that of conventional materials under continuous working conditions. Yunnan coffee bean exporters reported that the aluminum foil bags sealed by our heat-sealing packaging machine have never had bulging problems when transported from a plateau at an altitude of 2,000 meters to a coastal port.
Customized solutions are our killer. When we meet customers who make pet wet food, the equipment must be corrosion-resistant; when we meet customers who make Chinese medicine powder, we require zero dust residue. Last quarter, we designed a special-shaped sealing equipment for a facial mask company, which can accurately identify bag openings of different shapes. Their quality inspection supervisor joked: "This machine is more delicate than girls putting on false eyelashes."
Energy saving and consumption reduction have not been neglected. Engineers have installed a "standby breathing" function on each heat-sealing packaging machine, which automatically enters energy-saving mode if it stops for more than ten minutes. A daily chemical factory in Guangdong has calculated that the electricity bills saved by 20 equipment throughout the year are enough to give all employees in the factory an extra half month bonus.
What makes me proud recently is the change in the after-sales team. In the past, customers always said "the seal is not tight" when reporting repairs. Now engineers come to the door with thermal imagers and can directly call up the temperature curve of the equipment within three months to analyze the cause. A customer in Northeast China even recorded the maintenance process into a video: "Your maintenance is more sophisticated than the pulse diagnosis of an old Chinese doctor!"
Standing in the assembly workshop, watching the heat-sealing packaging machine that was about to be shipped to Kazakhstan undergoing the final vibration test, I suddenly remembered what the old master said when I entered the industry: "The sealing line is not pressed out by the machine, but a seat belt fastened to the product." Now we have added a 5G data port to each device, just like installing an intelligent monitor on this seat belt - no matter where the goods go in the world, we can hear the heartbeat of the packaging bag.
Next time you come to the factory, be sure to touch the sample bag that has "traveled around the world" in our exhibition hall. From the Sahara Desert to the Siberian frozen soil, the sealing line of this packaging bag filled with colorful sand is still as straight as a knife. It doesn't speak, but it tells us about the perseverance and breakthrough of the heat-sealing packaging machine for twelve years.
