TWI673019B - Bi-material midsole manufacturing procedure of cushion component - Google Patents

Abstract

A two-material midsole manufacturing process for a buffer element includes the steps of: providing a first material, a first material being provided to the mold, and after the first material enters the mold, a first upper cover is used to cover the mold; Two materials, a second material is provided to a substrate in a mold, and after the second material enters the mold, a second cover is used to cover the mold; and a mold is formed to cover the second cover. The mold enters an oven, and the oven is heated at a second predetermined temperature to cover the mold with the second upper cover for a second reaction time, so that the second material is foam-formed and combined with the substrate, and A semi-finished product is formed; after the aforementioned heating is completed, the mold covered with the second upper cover leaves the oven, and the second upper cover and the mold are separated from each other.

Description

Bi-material midsole process for cushioning components

A two-material midsole process for cushioning elements, especially a two-material midsole process for cushioning elements having double hardness and light weight.

In addition to protecting the feet, shoes are more comfortable for users. Existing shoes pay more attention to efficacy, so they have excellent elasticity, compression resistance, appropriate soft hardness, and low-density midsoles set in the shoe.

However, the existing midsole still has disadvantages: one is the single hardness, which makes the user feel uncomfortable. Second, if the pursuit of comfort is insufficient, the flexibility is insufficient. Third, if elasticity is sought, comfort is insufficient. Fourth, if comfort and elasticity are satisfied, the weight is too heavy.

In view of the above-mentioned shortcomings, the object of the present invention is to provide a two-material midsole manufacturing process for a cushioning element, which enables the midsole to have two different hardnesses, thereby improving comfort and elasticity and reducing the weight of the midsole.

In order to achieve the above-mentioned object, the technical means of the present invention is to provide a two-material midsole process for a cushioning element. The steps include: providing a second material, and a second material is provided to a substrate in a mold. After the second material enters the mold, a second upper cover is used to cover the mold; and molding, the mold covered with the second upper cover is entered into an oven, and the oven is heated to a second predetermined temperature to cover the mold with The second lid covers the mold at a second reaction time, so that the second The material is foam-formed and combined with the base to form a semi-finished product. After the aforementioned heating is completed, the mold covered with the second upper cover leaves the oven, and the second upper cover and the mold are separated from each other.

In one embodiment, a step of providing a first material is provided to the mold, and after the first material enters the mold, the mold is closed with a first cover.

In an embodiment, a zero-time molding step, the mold covered with the first upper cover enters the oven, and the oven heats the mold covered with the first upper cover at a first predetermined temperature at A first reaction time for the first material to form the substrate. After the aforementioned heating is completed, the mold covered with the first upper cover leaves the oven, and the first upper cover and the mold system are separated from each other. .

To sum up, the manufacturing process of the two-material midsole of a cushioning element of the present invention forms the midsole of two different materials, so that the midsole of the present invention has the characteristics of light weight and double hardness. The mid-sole with double hardness can provide users with better comfort and elasticity.

S1 ~ S8‧‧‧ steps

FIG. 1 is a schematic flow chart of a bi-material midsole manufacturing process of a cushioning element according to the present invention.

Please refer to FIG. 1 for reference. The present invention is a two-material midsole process for a cushioning element. The steps include:

In step S1, a first material is provided. A first material is provided to a mold. After the first material enters the mold, the mold is closed with a first cover.

Step S2, the zero-time molding. The mold covered with the first upper cover enters an oven, and the mold is heated at a first predetermined temperature for a first reaction time to form the first material into a substrate. The first predetermined temperature is 100 ± 5 ° C. First reaction time It is 90 ± 30 minutes. After the aforementioned heating is completed, the mold covered with the first upper cover leaves the oven, and the first upper cover and the mold are separated from each other. The first material is a mixture of a raw material A and a raw material B of a polyether polyol, a catalyst, a hardener, an antioxidant and a pigment. If the polyether polyol is 1 measurement unit, the catalyst is 0.05 to 0.1 measurement unit, the hardener is 0.005 to 0.05 measurement unit, the antioxidant is 0.02 to 0.05 measurement unit, and the pigment is 0 to 0.05 measurement unit. The measurement unit can be a weight unit or a volume unit. For example, the weight unit can be kilograms, grams, or pounds, and the volume unit can be liters, milliliters, cubic centimeters, or cubic meters. The temperature of raw material A and raw material B is 35 ± 10 ° C. The first raw material is located in the first bucket. The ratio of raw material A to raw material B is 1: 0.1 to 0.5. The raw materials of B are polyisocyanate or polyurea solution, ethyl acetate and butyl acetate. Polyurea ester solution is 1 measurement unit. Ethyl acetate is 0.3 to 1 measurement unit. Butyl acetate is 0.3 to 1 measurement unit.

In step S3, a second material is provided. A second material is provided to the substrate located in the mold. After the second material enters the mold, the mold is closed with a second cover. The second material is a foamed material. The second material is expanded polystyrene or thermoplastic polyurethane (TPU).

Step S4, forming. The mold covered with the second upper cover enters the oven. The oven heats the mold covered with the second upper cover at a second predetermined temperature for a second reaction time, so that the second material is foamed and formed, and is combined with the substrate. And half of the finished product is formed. The second predetermined temperature is 100 ± 5 ° C. The second reaction time was 10 ± 5 minutes. After the aforementioned heating is completed, the mold covered with the second upper cover leaves the oven, and the second upper cover and the mold are separated from each other.

Step S5, demolding. Remove the semi-finished product from the mold.

Step S6, trimming. The process of trimming the semi-finished product is to remove the excess burr of the semi-finished product.

Step S7, soaking. The trimmed semi-finished product is put into a soaking liquid for a soaking process at a predetermined soaking temperature and a predetermined soaking time. The predetermined immersion temperature is 30 ± 5 ° C. The scheduled soaking time is 24 hours. The soaking liquid is a mixture of polyurea solution, ethyl acetate and butyl acetate. Polyurea ester solution is 1 measurement unit. Ethyl acetate is 0.3 to 1 measurement unit. Butyl acetate is 0.3 to 1 measurement unit.

Step S8, finishing. Finish the semi-finished product that has been soaked so that the semi-finished product becomes a finished product.

To sum up, the manufacturing process of the two-material midsole of a cushioning element of the present invention forms the midsole of two different materials, so that the midsole of the present invention has the characteristics of light weight and double hardness. The mid-sole with double hardness can provide users with better comfort and elasticity.

The specific embodiments described above are only used to illustrate the features and effects of the present invention, not to limit the implementable scope of the present invention. Any application of the present invention without departing from the spirit and technical scope of the present invention is disclosed. Equivalent changes and modifications made by the disclosure of the invention should still be covered by the scope of patent application described below.

Claims (5)

A two-material midsole manufacturing process for a buffer element includes the steps of: providing a first material, a first material being provided to the mold, and after the first material enters the mold, a first upper cover is used to cover the mold; Two materials, a second material is provided to a substrate in a mold, and after the second material enters the mold, a second cover is used to cover the mold; and a mold is formed to cover the second cover. The mold enters an oven, and the oven is heated at a second predetermined temperature to cover the mold with the second upper cover for a second reaction time, so that the second material is foam-formed and combined with the substrate, and A semi-finished product is formed; after the aforementioned heating is completed, the mold covered with the second upper cover leaves the oven, and the second upper cover and the mold are separated from each other. For example, the two-material midsole process for the cushioning element described in item 1 of the scope of the patent application has a zero-step forming step. The mold covered with the first upper cover is entered into the oven, and the oven is opened with a The first predetermined temperature heats the mold covered with the first upper cover for a first reaction time, so that the first material is formed into the substrate. After the foregoing heating is completed, the mold with the first upper cover is closed. The mold system leaves the oven, and the first upper cover and the mold system are separated from each other. According to the two-material midsole manufacturing process of the buffer element described in item 2 of the patent application scope, wherein the first predetermined temperature is 100 ± 5 ° C; the first reaction time is 90 ± 30 minutes; and the second predetermined temperature is 100 ± 5 ° C; the second reaction time is 10 ± 5 minutes. According to the two-material midsole manufacturing process of the cushioning element described in item 1 of the patent application scope, it further has a demolding step to take the semi-finished product out of the mold; and a trimming step to trim the semi-finished product. That is to remove the excess burr of the semi-finished product. According to the bi-material midsole manufacturing process of the cushioning element described in item 4 of the scope of patent application, it further has a soaking step. The semi-finished product that has been trimmed is put into a soaking liquid at a predetermined soaking temperature and a predetermined soaking time Soaking process; and finishing, finishing the semi-finished product that has been soaked, so that the semi-finished product becomes a finished product.