Plastic sucking moulding process for damping insole

Abstract

The invention discloses a plastic sucking moulding process for a damping insole, the plastic sucking moulding process comprises the following steps: 1, processing a TPU film with a thickness of 1.0 mmto 4.0 mm from a TPU material having a Shore hardness of 55 A to 75 A; 2, heating and softening the TPU film, placing the TPU film in a plastic sucking machine for plastic sucking moulding, cooling and shaping to obtain a TPU container having a bottom wall and a side wall, wherein the TPU container has an upper opening, and the bottom wall and the side wall form a cavity; 3, fully adding ETPU particles into the cavity of the TPU container; and 4, covering the upper opening of the TPU container with the TPU film with a thickness of 0.03 mm to 0.1 mm, and connecting the TPU film with the side wall of the TPU container to form the damping insole. Compared with the prior art, the plastic sucking moulding process is applied to the field of shoemaking, and greatly improves the forming efficiency.

Description

technical field [0001] The invention relates to the field of shoe midsole molding, in particular to a shock-absorbing midsole molding process, which has the characteristics of easy industrialization and high molding efficiency. Background technique [0002] At present, with the continuous development of science and technology, foamed thermoplastic polyurethane (ETPU) is used more and more in shoe materials. There are generally two ways to apply foamed thermoplastic polyurethane in the market as the midsole material of shock-absorbing shoes: [0003] The first way is to put the ETPU particles into the molding mold first, and then use steam to heat for secondary foaming, so that adjacent ETPU particles can fuse with each other, and then get the ETPU sole after cooling, such as figure 1 Shown, it is the mold 10 that adopts when utilizing steam foam molding, has upper mold 11, lower mold 12 and the mold cavity 13 that is formed between upper mold 11 and lower mold 12, utilizes t...

AI Technical Summary

Problems solved by technology

[0005] The second method adopts a molding method different from the first method, and because people can directly see the granular ETPU particles in appearance, it is very popular with consumers at present, but the second method is currently being used For ETPU particles, the plastic body is usually formed by blow molding process, and then the blow molding mouth is used to fill the cavity with ETPU foam particles until it is full and can no longer be filled, and then the fusing method is used to form a fuse. The head seals the blow molding port. The processing efficiency of this molding method is very limited, which limits the competitiveness of the entire shock-absorbing midsole in industrialization, and because its molding method is very different from the first molding method , cannot be fine-tuned on the original equipment, which increases the cost of the enterprise

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