บริษัท เบญจมิตร บรรจุภัณฑ์ จำกัด ผู้ผลิต และจำหน่าย กล่องเหล็ก แก้วน้ำ  ฯลฯ มีงานพิมพ์ที่สวยงาม เพื่อตอบสนองความต้องการของลูกค้าทุกกลุ่ม
 
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   MAKING THREE-PIECE CAN
   
 
Shearing The large coil of metal is cut into metal sheets with size about 800*800 mm2. นำม้วนเหล็กมาตัดออกเป็นแผ่นเหล็กขนาด ประมาณ 800*800 มิลลิเมตร
   
Coating An inside protective coating is placed on the metal sheet and cured. นำแผ่นเหล็กที่ได้มาอาบด้วยแลกเกอร์ตามที่ต้องการ และทำให้แห้งโดยเตาอบที่อุณหภูมิประมาณ 200 องศาเซลเซียส
   
Printing The sheets are decorated with whatever printing the customer desires and then an over coat of varnish is placed on the decorated sheet. นำแผ่นเหล็กที่อาบเสร็จมาพิมพ์ตามแบบที่ต้องการ
Coating A second inside protective coating is placed on the sheets and cured. นำไปอาบแลกเกอร์อีกครั้ง
   
Metal sheets are now cut into small sheets which will be fed into the end making press. End Forming Ends are stamped out of the metal sheets. นำแผ่นเหล็กมาตัดเป็นแผ่นขนาดความกว้างขนาดก้นกระป๋อง นำมาผ่านเครื่องปั๊ม จะได้ก้นกระป๋องออกมาจากแผ่นเหล็ก
Body Forming Body blanks are fed into a bodymaker where they are formed into cylinders and joined at their side seams by solder, cement or weld. นำแผ่นเหล็กมาตัดขนาดเท่าตัวกระป๋อง ผ่านเครื่องม้วยเพื่อให้ได้ตัว แล้วนำไปเชื่อม หรือเข้าตะเข็บต่อไป
   
Double Seaming One end, top or bottom, depending on customer specifications, is double seamed on the can. ม้วนก้นกระป๋องให้ติกกับตัวโดยใช้เครื่องม้วน จะได้กระป๋องตามต้องการ
   
   MAKING TWO-PIECE CAN
   
 
1.Aluminium or steel strip arrives at the can manufacturing plant in huge coils.
   
2.The strip is lubricated with a thin film of oil and then fed continuously through a cupping press which blanks and draws thousands of shallow cups every minute.
   
3.Each cup is rammed through a series of tungsten carbide rings. This is the ironing process which redraws and literally thins and raises the walls of the cans into their final can shape.
   
4.Trimmers remove the surplus irregular edge and cut each can to a precise, specific height. The surplus material is recycled.
   
5.The trimmed can bodies are passed through highly efficient washers and then dried. This removes all traces of oil in preparation for coating internally and externally.
   
6.The clean cans are coated externally with a clear or pigment base coat which forms a good surface for the printing inks.
   
7.The cans pass through a hot air oven to dry the lacquer.
   
8.The next step is a highly sophisticated printer/decorator which applies the printed design in up to six colours, plus a varnish.
   
9.A coat of varnish is also applied to the base of each can by a rim-coater.
   
10.The cans pass through a second oven which dries the inks and varnish.
   
11.The inside of each can is sprayed with lacquer. This special layer is to protect the can itself from corrosion and its contents from any possibility of interaction with the metal.
   
12.Once again, lacquered internal and external surfaces are dried in an oven.
   
13.The cans are passed through a necker/flanger. Here the diameter of the wall is reduced or 'necked-in'. The top of the can is flanged outwards to accept the end once the can has been filled.
   
14.Every can is tested at each stage of manufacture. At the final stage it passes through a light tester which automatically rejects any cans with pinholes or fractures.
   
15.The finished can bodies are then transferred to the warehouse to be automatically palletised before dispatch to filling plant.
   
   
   The Can End (Easy Open Lid)
   
 
1.Can end manufacture begins with a coil of special alloy aluminum sheet.
   
2.The sheet is fed through a press which stamps out thousands of ends every minute.
   
3.At the same stage the edges are curled.
   
4.The newly formed ends are passed through a lining machine which applies a very precise bead of compound sealant around the inside of the curl.
   
5.A video inspection system checks the ends to ensure they are perfect.
   
TAB.The pull tabs are made from a narrow width coil of aluminum. The strip is first pierced and cut and the tab is formed in two further stages before being joined to the can end.
   
6.The ends pass through a series of dies which score them and attach the tabs, which are fed in from a separate source.
   
7.The final product is the retained ring pull end.
   
8.The finished ends, ready for capping the filled cans, are packaged in paper sleeves and palletised for shipment to the can filler.
   
   
 
 
 

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Benjamit Packaging Co.,Ltd.
111 Moo5 Phutthamonthon Sai4 Rd., Sampran, Nakornpathom 73220 Tel: (662)813-0538-40, (662)420-1463