General packaging materials include : 3 - side seal , center seal , side seal with gusset , center seal with gusset , tray lid , rolls , retort pouch ( this pouch may look like other regular pouches , but it actually made up of different kinds of materials which enable the pouch to be heated and sterilized ) 其它包装材料包括:三边封袋，中封袋，风琴袋，中间封风琴袋，封口膜，卷膜，蒸煮袋（袋子本身可以在蒸或煮的高温情况下使用，对内包物进行加热和杀菌） 。
Characteristics : this machine is used technique of temperature autoregulating , main - motor conversion stepless speed regulaling and micro - computer double - sensor detector . drive system is used stepping mechanism convenient for different laminated bags to operating . it is one of advanced equipment for sealing of " u " type plastic bag 特点：该机采用智能式自动控温，主电机由变频无级调速，微电脑双电眼跟踪，传动采用步进直压式适应于各种复合及抽真空袋制作，是“ u ”字制袋的边封工序不可缺少的最新设备。
There are many adwanced eauipments , such as high - speed concave edition print , dry composite machine , cutting machine , bag making machine , treble coextrusion machine . the products touch on food . household chemical , clothes and the other areas . the products are including trilateral envelope , middle envelope , self - supporting bag , self - supporting zipper bag , convulve film and pvc thermal shrinkage label 公司目前拥有三层共挤吹膜机、高速凹版印机、干式复合机、分切机、制袋机、特殊成形等设备；产品涉及食品、日用化工、服装等各个领域，主要范围有：三边封袋、中封袋、自立袋、自立拉链袋、纸塑复合袋、卷膜、 pvc热收缩标签等。
This machine is suitable for producing 2 - layers or multiple - layer tri - side sealing composite film bag for foods , laundry detergent , candies etc . based on materials such as bopp , opp , cpp , pe , nylon , aluminum foil , and paper , it is an ideal packing bag making facility with easy operation and rapid working , making even - face , beautiful products with highly strong heating sealing . feature : 1 . the whole machine adopts industrials control level computer and auxiliary three - servo control system . the pouch - making speed , pouch making length , temperature , countring punching and conveyor quantity of doubing finished products , etc . can be preset via touch screen 该机适用于以bopp opp cpp pe尼铝箔纸张为基材的两层或者说多层三边封复合薄膜袋食品袋洗衣粉袋糖果袋等的生产，本设备操作简便，产品平整，形状美丽，封边处热合强度高，制袋速度快是理想的包装制袋设备。
