January 20, 2016
Sewing 101

Posted by: Lee Bedingfield 5 minute read

There are basically two types of sewing methods used in industrial applications: chain-stitch and lock-stitch.  Each of these two methods has some pros and cons in the industry.  The Lock-stitch name is pretty much self-explanatory in that it “locks” the stitch in by lowering the needle through the material and then the hook makes a complete loop with the lower thread from the bobbin.  Chain-stitch produces continuous loops forming a “chain” of stitching but the stitch can unravel from one end.  The advantage of chain-stitch is the speed of production and reduced change time.  For a lock-stitch process, the operator has to backwind a bobbin and manually add this to the machine.  Chain-stitch machines on the other hand will run continuous from an auxiliary package. 

So now that you have mastered sewing which method does MaxCell utilize?  The answer is actually both – we use a chain-stitch for the continuous sewing of the seam and lock-stitch for the fabric splices where two pieces are joined together.  So why are we discussing this today?  Well it’s because I got the old “can you unravel MaxCell” question again recently and the answer is absolutely yes you can if you try hard enough.  Truth is, it’s not that easy as I can attest to the last time I tried to open a bag of dogfood.  My great dane began to get a little agitated so I finally had to cut it open.   The fact is there have been very, very few complaints over the years for MaxCell unraveling but lots of inquiries.  Mostly these were incidences where the seam caught a sharp edge during the manufacturing process or on a reel in the field but again it is very rare.  One note to keep in mind is that all MaxCell samples are glued on the end to keep someone from picking at the end to see if they can unravel it.


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