Supply 4"/100 mm/4 inch/10 cm wide Impulse Heat Sealer Cellophane Bag Sealer with Extra Heating Element & Teflon Sheet From Zhejiang Tianyu industry Co. Ltd Factory.Impulse Heat Sealer Cellophane Bag Sealer with Extra Heating Element & Teflon Sheet Made In Zhejiang Tianyu industry Co. Ltd Factory is the perfect sealer to seal kel-F,Mylar,polyflex, P.V.A.,Polyethylene,polyurethane,polyvinylchloride,polypropylene,pliofilm,tivac,saran and all other heat sealable materials.Can be used for Mylar bags up to 6 mils thick.This is an impulse sealer, meaning that it forms a seal when an electric current is passed through a thin wire or strip of metal (covered by a PTFE tape) to generate heat. This means there is no "heat up" time required. This sealer does not have a power switch, just plug it in, turn dial to desired heat setting, place the bag on top of the sealer, and then press the top handle down. (You will need to experiment with a test bag to find the optimum seal). You can adjust the time of the seal from the front knob, and when you press the top bar to seal, the red light will come on, and you will hear a click (this means the heating element is engaged). , And as soon as the seal is done, the red light will go off. . Please keep the handle pressed down for a few seconds to get optimal results. Lift handle, and inspect seal. You should not be able to pull the bag apart, and the seal should be uniform, running from end to end. Inspect the heat sealer for any build-up or burned plastic, wipe with dry cloth, keep the device clean. Great for home business, pharmacies, food products, coffee bags, CD's, party favors. (No loose pieces of toys and candies everywhere. Pack them as if they are from the store) it will seal cellophane, poly-ethylene (PE) plastic bag, poly-propylene (PP) bag. It will also work with the plastic produce bags in the supermarket. (Save those bags. Use them twice and save our resources and environment) , includes 2 each of heating element wires, and Teflon cloth strip.