How Sneakers are Made

Sneakers are types of shoe that have so much versatility they would never go out of style. From old people sneakers to teenage school sneakers and Cute Baby Sneakers

For the little one, everyone gets in on the sneaker fun. Wearing sneakers has grown from just fashion to culture and urban art. Because of how the culture has grown, sneakerheads are becoming more and more savvy about the products they put on their feet. Gone are the days when companies could ju t plaster their logo on a sneaker, pair it with nice color schemes, and actually get away with it.

 

There are some well known processes of how the best quality sneakers are made. One of these processes is the cold cement process. In the cold cement process, the shoe upper can be prepared with the strobel bottom. For the classic jogger style, the outsole covers the edge upper so a strobel bottom can be used to make the shoe lighter and more flexible. The upper is steamed to soften the materials and the last is inserted and pulled tight. Once the last is tight inside the upper a second lasting machine pulls the heel edge. Once the last is secured inside the upper and temporary shoelaces are pulled tight, the upper is cooled to shrink the upper tight to the last. The shoe may have a plastic or fabric part installed on top of the tongue to protect the surface from damage and drift during the lasting operations. While the upper is being lasted the sole unit is being prepared. In this case, the rubber sheet sole is combined with the EVA foam cushioning component cemented inside. This is done in a separate process that’s called stock fitting.

After that the upper is lasted tightly and the outside unit is complete, the two pieces come together. The rubber sole unit will receive coatings of primer and cement. The outsole will get its own special primer designed for EVA and rubber. The shoe upper is also prepared with its own special primer and cement. After the contact cement and primer has been completely dried in the heating tunnels the two pieces are joined together by hand. The skilled worker aligns the upper and outsole together, then places the shoe in a hydraulic press. For pressing, cooling, and de-lasting, the shoe will have 3 pressing operations, usually, all done with one machine. A vertical press, toe and heel press, and side presses. This ensures there is full contact between the upper and outsole. Once the shoe is pressed together it’s often put in the cooling tunnel to set the glue. After the cooling tunnel, a shoe de-lasting machine is used to push the last out of the shoe without wrinkling the upper. Now the sneaker is complete. At this point, you can insert the footbed. The footbed may be molded EVA with a fabric cover or flat sheet cut foam. The flat die-cut footbed is usually cemented inside the shoe, while molded footbeds are most often removable.


 Running Shoes

 

For running shoes, the process is a little be different because running shoes are made to handle high  and faster frequency in movement and more intensity. What are the best materials for running shoes?  Most running shoes are constructed with breathable knit Polyester or Nylon mesh. Knit fabric allow the material to smoothly follow the last curves.  Running shoe uppers often with PU leather reinforcements.  Pu or synthetic leathers are great for running shoes as they have some stretch and are damaged by water.  The classic running shoe is made from suede with some mesh inserts.  While suede is comfortable and conforming, it’s not weather resistant and it’s very heavy when wet. The running shoe upper is prepared with the strobel bottom.  

The outsole covers the edge of the upper so a strobel bottom can be used to make the shoe lighter and more flexible. The running shoe upper is steamed to soften the materials and the last is inserted and pulled tight.   Once the last is tight inside the upper a second lasting machine pulls the heel edge.  Once the last is secured inside the upper, temporary shoelaces are pulled tight, and the upper is cooled which allows the upper to shrink and fit tight to the last.

The shoe may have a plastic or fabric part installed on top of the tongue to protect the surface from damage and drift during the lasting operations. While the upper is being lasted, the sole unit is being prepared. In this case, a rubber sheet sole is combined with the EVA foam cushioning component cemented inside. This is done in a separate process that’s called stock fitting. Running shoe midsoles will be made from weight EVA foam.  A thin layer of rubber will allow the EVA to flex, but protect the midsole from wear.

Now that the upper is lasted tightly and the outside unit is complete, the two pieces come together. The rubber sole unit will receive coatings of primer and cement. The outsole will get its own special primer designed for EVA and rubber. The shoe upper is also prepared with its own special primer and cement. How Running Shoes are Made Pressing the running shoe sole. After the contact cement and primer have been completely dried in the heating tunnels, the two pieces are joined together by hand. A skilled worker aligns the upper and outsole together then places the shoe in a hydraulic press.

The running shoe will have 3 pressing operations, usually all done with one machine: a vertical press, toe and heel press,  and side pressing. This insures full contact between the upper and outsole uit. Once the shoe is pressed together it’s often put in the cooling tunnel to set the glue. After the cooling tunnel, a shoe de-lasting machine is used to push the last out of the shoe without wrinkling the running shoe upper. Now the running shoe is complete!  At this point you can insert the footbed.  The footbed may be molded EVA with a fabric cover or flat sheet cut foam.  The flat die-cut footbed is usually cemented inside the shoe, while molded footbeds are most often removable.

Seakers are fun for any age so go get yours now.