摘要:
A reflective vulcanized rubber footwear includes a shoe body unit (1) and at least one reflective unit (2) clad with the shoe body unit (1). The shoe body unit (1) includes a sock (11) and a rubber shoe body (12), which wraps the outside of the sock (11). The reflective unit (2) includes a reflective layer (21) and a hot melt adhesive layer (23),which connects the reflective layer (21) and adheres to the shoe body (12) before vulcanization and heat-treatment of the shoe body (12). With the hot melt adhesive of the reflective unit (2), the invention can make the reflective unit (2) adhere to the shoe body unit (1) before vulcanization and heat-treatment of the shoe body unit(1). When the shoe body unit (1) is being vulcanized and heat-treated, the hot melt adhesive is hot-melt fixed to the shoe body unit (1) more steadily. Thus,the manufacturing process will be simplified and the stability of the reflective unit (2) will be improved.
摘要:
A sole structure (103) for an article of footwear (100) includes an outer sole component (106) with a co-molded flex modifier component (208). The outer sole component is formed of a first mold material, such as a rubber mold material. The flex modifier component includes a fiber material and a second mold material. The second mold material may be mold compatible with the first mold material. The sole structure may be formed by co-molding an outer sole component blank or pre-form (620, 621) (e.g., rubber mold material), and a flex modifier component, e.g., in a hot press molding process using a molding system having a mold cavity (606, 607) configured to form the outer sole component. The flex modifier component may be formed (e.g., cut or stamped) from a sheet of flex modifier material (301), such as a thermoplastic extruded hot melt film sandwiched between fusion bonded non-woven fiber fabric material impregnated with a styrene-coated polymer.
摘要:
The present invention relates to the footwear sector and more specifically a process for injection moulding soles made with monochrome or multicoloured foamable and cross-linkable EVA-based compounds using two moulds placed on two different machines.
摘要:
Pellets, beads, particles, or other pieces of a thermoplastic elastomer having a maximum size in at least one dimension of 10 mm or less (collectively, "pellets") are infused with a supercritical fluid in a pressurized container, then rapidly depressurized and heated either by immersion in a heated fluid or with infrared or microwave radiation to foam the pellets. The pellets are prepared with at least two different densities. Pellets with different densities, thermoplastic elastomer compositions, or foam response rates are placed in different areas of a mold. The mold is filled with pellets, then the pellets are molded into a part. The part has areas of different density as a result of the placement of pellets of different density.
摘要:
An article of footwear is provided and includes an upper having a medial side and a lateral side simultaneously formed from a single sheet of material in a thermoforming mold. The medial side and lateral side are joined to each other such that a joint between the medial side and the lateral side extends continuously from a heel portion of the upper to a toe portion of the upper.
摘要:
The present invention provides a manufacturing method of three-dimensional cross-linked foam for uppers of shoes, comprising: preparing a plurality of foaming materials in a planar or three-dimensional shape with a cross-linked foaming suppressed; forming at least one interfacing pattern on at least one foaming material to prevent physical and chemical interactions between the foaming materials, the interfacing pattern formed of at least one interfacing material; cross-linked foaming of the foaming material having the interfacing pattern thereon to obtain a cross-linked foam in a planar shape, the cross-linked foam having at least one inner cavity structure therein; and vacuum molding the planar cross-linked foam in a vacuum molding die to obtain a cross-linked foam having a shape corresponding to a last, the planar cross-linked foam disposed in a cavity of the vacuum molding die, the cavity having a shape corresponding to the last.
摘要:
This invention refers to an innovating structural material for footwear, thermoplastic and coextruded with thermoadhesives, comprising a multilayer material. The invention also refers to a manufacturing procedure of said structural material for shoes. The structural material proposed may consist of: only a sheet of thermoplastic resins; one sheet of thermoplastic resins coupled to a substratum of woven or non-woven material on only one side; a sheet of thermoplastic resins coupled to two similar or different of woven or non-woven substrates on the two sides (right and reverse). The substrate may use, among others, the following materials: nonwoven polyester, nonwoven polypropylene, polyester web, cotton web, PVC sheet, cotton flake, jersey, mesh, etc. Its thickness may vary according to the material to be laminated. The thermoplastic sheet consists of the following layers: external layers A and C formed by thermo-reactivatable adhesives such as EVA (ethyl-vinyl-acetate), taquifying esters and auxiliary additive substances of flow, such as amides. These layers may present a different formulation among them, according to the use to be given to the structural material. Intermediate layer B formed by polyolefinic resins such as polypropylene, polyethylene or ethylene copolymers of ethylene.
摘要:
A method of moulding an object in polyurethane, in particular a sole for footwear, comprising the steps of: - preparing polyurethane scraps, in granular form, said scraps having a breaking load greater than 20 kg/cm2, and a density greater than 200 g/l, - wetting said scraps with a polyurethane binding agent in order to obtain an agglomerate of scrap material and binding agent, - inserting the agglomerate in a mould (4), so that the percentage by weight of the binding agent is at least equal to 10% of the total weight of the agglomerate inserted in the mould (4), - closing the mould (4) and baking the agglomerate with steam blown inside the mould (4), so as to obtain an increase in the molecular weight of the binding agent and the incorporation of the scraps inside a binding agent matrix, - cooling the mould (4) and removing the moulded part.
摘要:
Procédé de fabrication d'un article chaussant (1), l'article chaussant comprenant au moins une enveloppe (21) dont la forme est figée par chauffage externe, le procédé de fabrication comprenant une étape de référence dans laquelle une première enveloppe (21) est mise en place sur une forme (73), la première enveloppe (21) comprenant au moins un matériau au moins en partie thermofusible ou thermoformable, la forme (73) s'étendant en longueur depuis une extrémité arrière (74) jusqu'à une extrémité avant (75), en largeur entre un bord latéral (76) et un bord médial (77), et en hauteur depuis une base (78) vers un dessus (79). Le procédé de fabrication comprend au moins une étape de fabrication, postérieure à l'étape de référence, l'étape de fabrication comprenant au moins une opération de mise en pression à chaud d'une partie au moins de la surface de la première enveloppe (21) disposée sur la forme (73).
摘要:
Foam items may be buffed using particles such as particulate sodium bicarbonate in accordance with the present invention. Foam items may be, for example, expanded EVA foam items pre-formed into an intermediate size and shape. A skin layer may be formed during the expansion of the foam item to form an expanded foam item which may be entirely or partially removed by buffing the item using particles projected with selected buffing parameters. The buffing parameters may be varied based upon the thickness of at least a portion of the skin layer and/or the desired degree of moldability for the foam item after buffing. Particulate sodium bicarbonate or other types of particles used for buffing may be recycled and reused for further buffing of foam items.