Process for making a shoe and shoe thus made
View Patent ↗Disclosed herein is a process for making a shoe using a stand-alone mouldable nonwoven fabric which has the ability of self-sustaining and shape maintenance and which is heated to become softened till molten. In the process of the invention, the shoe parts are moulded by a compression moulding process and the moulded parts are then heated and welded together by a plastic welding method.
1. A process for making a shoe including a shoe upper, a midsole, and an outsole, the shoe upper comprising an upper body having an opening configured to receive a wearer's foot, and a lower edge extending perimetrically from the upper body, the process comprising steps of:
i) providing separately the shoe upper, the midsole, and the outsole, wherein the shoe upper is made from a standalone mouldable nonwoven fabric, the midsole and the outsole are respectively moulded from the stand-alone mouldable nonwoven fabric, and the standalone mouldable nonwoven fabric has the ability of self-sustaining and shape maintenance and is heated to become softened until molten;
ii) attaching the lower edge of the shoe upper to the midsole; and
iii) heating at least a part of the midsole and at least a part of the outsole for welding said heated parts of the midsole and the outsole so as to attach the midsole to the outsole, wherein different degrees of welding hardness are obtained through nonuniform welding at different welding sections of said heated parts,
wherein the shoe upper is provided by moulding two separate symmetrical halves as one piece from the stand-alone mouldable nonwoven fabric, respectively; heating the two symmetrical moulded halves at their respective marginal portions along a longitudinal direction of the shoe upper to an extent that allows for welding said heated marginal portions of the two halves so as to attach the two halves at the marginal portions thereof in a manner that the two symmetrical halves form together the shoe upper.
2. The process of claim 1 , wherein the lower edge of the shoe upper and the midsole are heated and welded so that they are attached to each other.
3. The process of claim 1 , wherein the midsole and the outsole are heated and welded over their entire surfaces in step iii).
4. The process of claim 1 , further comprising the step of moulding an insole as one piece from the stand-alone mouldable nonwoven fabric, the insole being provided fixedly or removably in the shoe upper.
5. The process of claim 4 , wherein the insole and the midsole are heated and welded together.
6. The process of claim 1 , wherein the moulding of the two separate symmetrical halves is carried out in a compression moulding process.
7. The process of claim 1 , wherein the welding comprises plastic welding.