Sealing and shrinking machine how to improve the packaging effect?
2019-01-19
Sealing and shrinking machine has a certain market and ownership in foreign countries.Due to the constant change of packaging materials in various industries, the sealing and cutting shrinking machine has added new vitality and promoted its more extensive use, such as food, drinks, condiments, groceries, electrical supplies, electronic parts, drugs and their size boxes, boxes or articles of packaging.However, in the process of design, production and trial production, it is found that the following factors affect the effect of packaging finished products, which is worthy of further study and discussion.
1.Influence of performance of film cutting knife and film sealing knife fully automatic passageway heat-shrinkable packaging machine, the working performance of film cutting knife and film sealing knife is an important factor affecting the quality of packaging. Before packaging, it is necessary to level the film cutter and film sealing knife, and the upper knife bed and the lower knife bed must be adjusted to be parallel to each other;Pressure adjustment of the knife spring is basically the same, and the two knives should be coordinated when working.Otherwise, it will produce plastic film even knife or tear open the phenomenon, a batch of waste products.Then there is the sequence of film cutting and film sealing.At present, the heat shrink packaging machine on the market, the general cutting knife and sealing knife synchronous work, or first sealing film after cutting film, have the disadvantages of easy to tear film.The experiment shows that the working sequence of cutting film first and then sealing film is good, and the shrinkage yield of packaging is greatly improved.
2.In the design of various forms of thermal shrinkage packaging machine, the first to choose a blower.At the same time, more attention should be paid to the reasonable structure of the hot air circulation pipe system.For example, the performance of the blower is poor, and the design of the flexible flow plate, baffle plate, diverter plate, flow regulating plate and inlet and outlet outlet of the air flow system is not reasonable, and a large amount of waste products will be generated when the heat shrink package, so it is difficult to debug it well.Therefore, the heating blower must be selected appropriately, the air flow system structure design department is reasonable.When the blower works, it can stir up and down the heating temperature evenly, so as to achieve good results.
3.The influence of shrinkage temperature and walking conveying speed. There is a close relationship between shrinkage temperature control and walking conveying speed.Low productivity is the opposite.Therefore, the two debugging control must be coordinated.If the temperature is too high, walking speed is too low, shrink machine packaging products will appear burst or shrink film harvest a group, serious when there will be a cave.If the temperature is too low, walking speed is too fast, the contraction is not complete, there will be wrinkles, not full.According to the actual situation of debugging control, only to master their performance rules and mutual relations, will be packaged beautiful products.
4.The effect of shrink film exhaust when items need to be fully sealed packaging, special attention should be paid to shrink the exhaust problem.When the packaging machine will be wrapped up the goods sent to the hot shrinkage chamber, packaging film by the temperature of the impact began to shrink, edge of the edge of the exhaust, exhaust is generally through the small pinhole punch hole.Because at this time micro hole exhaust speed and contraction speed is basically the same, so the product packaging full and beautiful.But when the packaging material is too big, the micro hole exhaust speed is less than the shrink film speed, will produce residual gas bubble, serious will produce capsule burst, affect the packaging quality.Therefore, packaging large items, should be added to the number of puncher, the packaging film in the film delivery process will play enough exhaust, contraction effect will improve.
