Improve the composite bags of heat sealing strength of the five methods

Composite bag heat sealing strength is an important indicator of packing bag, it is directly related to whether good protection products. Sometimes we will encounter the heat sealing strength of plastic bags is not enough, lead to air leakage, cracking and other phenomena occur. So how can we strengthen heat sealing strength of packing bag? First of all, let's take a look at those factors affect bag heat sealing strength: 1, the heat sealing knife, temperature, pressure and time, the width of the 2, heat sealing knife, shape, 3, heat sealing layer of the material, thickness, 4, and the composite strength, 5 heat sealing layer surface is bright and clean. These five factors are the main factors influencing the intensity of heat sealing. So we want to improve the packing bag heat sealing strength is also from the five aspects. 【 Guangdong bags 】 A smooth surface, to ensure that the heat sealing layer. When a foreign body surface, heat sealing strength will reduce obviously, make sure that the heat sealing layer surface clean must complete the following work: a, to ensure the automatic packaging equipment or bag making machine conveyor belt, transmission roller clean; B, eliminate sharp hard objects on the equipment, prevent cut ceng film from foreign bodies, sandwiched between heat sealing; C, when the filler for powder and so on which are prone to static electricity, heat sealing layer should be chosen with antistatic film. Second, adjust the heat sealing temperature, pressure and heat sealing layer of different material and thickness of time, the best combination of heat sealing temperature, pressure and time are also different, adjust these parameters to the best combination, heat sealing strength is the highest. The consulting suppliers, or adjust test summary. Third, widen the heat sealing width or into a wavy surface heat sealing knife. Widen the heat sealing knife width broaden heat sealing width, actually does not strengthen heat sealing strength, but it can reduce the powder particles such as tiny foreign body's influence on the heat sealing strength. Using corrugated heat sealing knife can make better heat sealing layer of fusion, so as to achieve heat sealing strength of ascension. Four, heat sealing layer or choose better heat sealing film heat sealing layer, make more membrane fusion together, it's like 1 principle of chopsticks chopsticks and 10. And different material film, the fusion between molecules after suction is different also, and also the influence of different under different environment. Such as LDPE than in low temperature environment with the thickness of the CPP high heat sealing strength significantly. Five, promote material composite strength composite bags composite strength is not enough, under pressure from heat sealing knife, offset or fault, then the heat sealing knife heat sealing layer of the bottom pressure will reduce, cause heat sealing strength is not enough. Above the five methods is to improve the strength of the composite bags heat sealing method, are also usually in sequence to improve, if the previous factors does not exist, then choose the next step, of course it's not entirely is fixed. In addition, are now more emphasis on consumer experience, packing bag heat sealing strength is not more is better, especially when bags without tearing mouth design. On the premise of ensuring protection products, packing bag heat sealing strength should be as small as possible.