A molding device and a molding method are disclosed. The molding device includes an upper mold, a lower mold and a middle mold. The lower mold is disposed below the upper mold. The middle mold is disposed between the upper mold and the lower mold. The middle mold is moveably attached to the lower mold through a position control mechanism.

A molding device and a molding method are disclosed. The molding device includes an upper mold, a lower mold and a middle mold. The lower mold is disposed below the upper mold. The middle mold is disposed between the upper mold and the lower mold. The middle mold is moveably attached to the lower mold through a position control mechanism.

The present invention relates to a method for the production of plastic footwear (10; 100) of the full plastic type by means of moulding using a polyurethane mixture (M; P). The method comprises the steps of: providing a mould (20) having a mould cavity (22) defined by at least two impressions (28, 30) and designed to receive a shoe last (24) so as to define, when the mould (20) is closed, an interspace (26) having the shape and dimensions of the plastic footwear (10; 100) to be produced; spraying a polyurethane mixture (M, P) onto said at least two impressions (28, 30) of the mould cavity (22); inserting the shoe last (24) inside said mould cavity (22); closing the mould cavity (22) so that the sprayed polyurethane mixture (M, P) occupies said interspace (26); opening the mould (20), once at least the demoulding time (td) for the sprayed polyurethane mixture (M, P) has lapsed, such that the sprayed polyurethane mixture (M, P) has solidified inside the interspace (26) forming said plastic footwear (10, 100); extracting the shoe last (24) from the mould cavity (22); removing the plastic footwear (10, 100) from the shoe last (24).

A footwear having a shock attenuating and cushioning sole is provided, including a base to which first and second wave elements are joined, each element including alternating crests and troughs. The crests are wide and can each form a ground contact surface, whereas the troughs can be narrower than the crests. Crests of one element are disposed adjacent the troughs of another element. The widths of the crests to those of the troughs can be in at least a 2:1 ratio. Forward and rearward ends of the elements are connected to the base, and the troughs intermittently join with the base to secure the elements between the ends and to impair lateral movement. Different groups of wave elements can be grouped together to form a forefoot section, a heel section and/or an arch section, with the sections separated from and compressible independent of the other sections.

A main technical feature of a method for molding and forming a flip-flop and a mold thereof provided by the invention is that when a polymer raw material is filled into a mold chamber space of the mold, the filled raw material is preferentially flowed in a direction of a strap area space used to mold a V-shaped strap portion of the flip-flop to ensure that the slender V-shaped strap portion of the flip-flop can be integrally formed.

A main technical feature of a method for molding and forming a flip-flop and a mold thereof provided by the invention is that when a polymer raw material is filled into a mold chamber space of the mold, the filled raw material is preferentially flowed in a direction of a strap area space used to mold a V-shaped strap portion of the flip-flop to ensure that the slender V-shaped strap portion of the flip-flop can be integrally formed.

Provided is a mold (4) for manufacturing a shoe cushion (1), the mold (4) comprising: a first mold (5); a second mold (6) seated on the first mold (5) and configured to contain first cavities (6a); a third mold (7) seated on the second mold (6) and configured to contain second cavities (7a), wherein the second cavities (7a) are smaller than the first cavities (6a) of the second mold (6); a fourth mold (8) seated on the third mold (7); and one or more air vents (9) formed between the first mold (5) and the second mold (6).

Disclosed is a novel non-slip grippy ventilated shoe made of a slip resistant material with a failure mode of from 1 to 50 Newtons/millimeter, and is generally made of a cage-like configuration to provide maximum slip resistance as well as ventilation with minimum structure, just sufficient enough structure to allow the shoe to provide grip on a surface. The shoe is useful in performing floor exercises such as barre, yoga and pilates among other applications such as water sports like surfing where grip is important, or for hospital settings for fall risk patients to alleviate the risk of falling.

Disclosed are a method for preparing a shoe shell and a twice-opening-mold shoe-making mold. The twice-opening-mold shoe-making mold comprises a machine table (1), a bottom mold (2) arranged on the machine table (1), an oil cylinder (3) arranged in the machine table (1) and connected to the bottom mold (2), and a mold main body (4) arranged above the bottom mold (2), wherein a mold cavity (21) is formed in an upper surface of the bottom mold (2). The twice-opening-mold shoe-making mold further comprises a mold inner core arranged in the mold main body (4), a mold inner edge (6) arranged below the mold inner core, an upper heating plate (7) arranged above the mold main body (4), a lower heating plate (8) arranged under the bottom mold (2), and a lifting mechanism (9) connected between the bottom mold (2) and the mold main body (4), wherein the mold inner edge (6) extends downwards from the interior of the mold main body (4) to a position below the mold main body (4) and is directly located above the bottom mold (2). A technology in the whole process is greatly simplified, thereby improving the working efficiency. Moreover, the shoe shell prepared by means of the twice-opening-mold shoe-making mold and obtained by using an integral forming technology is stronger and more durable compared with those obtained by means of a traditional shoe making technology.

Disclosed are a method for preparing a shoe shell and a twice-opening-mold shoe-making mold. The twice-opening-mold shoe-making mold comprises a machine table (1), a bottom mold (2) arranged on the machine table (1), an oil cylinder (3) arranged in the machine table (1) and connected to the bottom mold (2), and a mold main body (4) arranged above the bottom mold (2), wherein a mold cavity (21) is formed in an upper surface of the bottom mold (2). The twice-opening-mold shoe-making mold further comprises a mold inner core arranged in the mold main body (4), a mold inner edge (6) arranged below the mold inner core, an upper heating plate (7) arranged above the mold main body (4), a lower heating plate (8) arranged under the bottom mold (2), and a lifting mechanism (9) connected between the bottom mold (2) and the mold main body (4), wherein the mold inner edge (6) extends downwards from the interior of the mold main body (4) to a position below the mold main body (4) and is directly located above the bottom mold (2). A technology in the whole process is greatly simplified, thereby improving the working efficiency. Moreover, the shoe shell prepared by means of the twice-opening-mold shoe-making mold and obtained by using an integral forming technology is stronger and more durable compared with those obtained by means of a traditional shoe making technology.