Manufacturing Technology Of Waterproof Shoes

One: the waterproof membrane used for the waterproof socks should reach the way of 0.03MM tongue fitting material; waterproof Oxford cloth + waterproof membrane 0.03 thick +4MM foam +28GT/C or use net cloth film technology.

Two: waterproof film should be smooth without wrinkle or breakage, and waterproof material testing should reach 10 thousand water pressure.

Three: waterproof interior should pay attention to cutting (straight knife) in the process of blanking, should pay attention to protect the waterproof membrane, not be chopped.

Four: when the car is waterproof, the hot-air sewing machine must be adjusted correctly. The temperature adjustment depends on the material of the waterproof material. The temperature is 360-375, the pressure is 2.5KG, the speed is 200-400 turn (according to the proficiency level of operation), the pressure of the nozzle 0.6KG. pays special attention to the air volume of the hot air sewing machine cylinder, and it should not be too big to prevent damage to the waterproof membrane.

Five: watertight inner car seams must be lined with 40# or waterproofing when they are sewn by the waterproofing line. There is no overlap. The universal thread spacing is 8 pin / inch and the width is 5-6MM.

Six: Waterproofing strip should not be wrinkled or blister. Special attention should be paid to both sides of the waterproof bar to be compacted and pressed in place, not loose or wrinkled, especially in places where the turning or soliton is relatively large.

Seven: socks, car waterproof strip test qualified before the shoe can be combined.

Eight: nail nails should not be too long or not round, otherwise they will damage the waterproof socks.

Nine: if the PVC is used to reinforce, the PVC of the needle car should be strengthened, and the PVC should be strengthened. First, the PVC treatment agent should be brushed on the front side. After the drying is done, the waterproof glue should be brushed and dried.

Ten: after the sewing machine, the back of each part of the upper part of the shoe should be lightly brushed with water repellent. The water repellent should not be brushed too much to avoid being soaked outside. After drying, the waterproof adhesive should be affixed to the bonding position. When the lower part of the upper part of the shoe is tested, there must be a waterproof adhesive for the joint of the foam parts to be placed on the water parts. The waterproof umbrella strips should be affixed, and it should be adhered to the clockwork. In particular, the shoe toe should be attached. The location of the combination of the door, the shoe and the tongue must be brushed with waterproofing agent.

Eleven: tongue cotton, adjacent cotton, to light spray water repellent.

Twelve: the back of buttonholes should be affixed with soft material (1.2) to avoid scratching waterproof membrane.

Thirteen: during the molding process, the glue should not be brushed too much. The base plate should be made of benzene free or non adhesive. The molding should be finished at the last time. It is not necessary to touch sharp objects or exert too much force to break the waterproof membrane.

Fourteen: when forming the pliers, it is necessary to spray the glue in the stockings or to plunder the ends after dispensing. When the tongs are used, the toe ends should be pasted with oil paper or PE paper so as to prevent the pliers from breaking through the waterproof membrane.

Fifteen: after the shoe is molded, the face of the whole shoe must be sprayed with a water repellent agent after freezing.