Method for producing a molded part and molded part

Patent metadata

Field	Value
Publication number	US-2022016813-A1
Application number	US-202117449556-A
Country	US
Kind code	A1
Filing date	Sep 30, 2021
Priority date	Sep 22, 2017
Publication date	Jan 20, 2022
Grant date	—

Abstract

A method for producing a molded part, in particular a component of a sporting good, includes providing a mixture of a polymer melt and a foaming agent and injecting the mixture into a mold. The method includes solidifying at least a first portion of the molded part without foaming and at least a second portion of the molded part after foaming inside the mold, wherein the mixture includes a polymer having an average molecular mass corresponding to a viscosity number ≥130 ml/g, preferably ≥170 ml/g, more preferably ≥190 ml/g and most preferably ≥225 ml/g, wherein the viscosity number is determined via solution viscometry according to the ISO 307 standard.

First claim

What is claimed is:

1 . A molded part produced according to the method comprising:
providing a mixture of a polymer melt and a foaming agent; injecting the mixture into a mold; and solidifying at least a first portion of the molded part without foaming and at least second portion of the molded part after foaming inside the mold, wherein the mixture comprises a polymer having an average molecular mass corresponding to a viscosity number ≥130 ml/g, preferably ≥170 ml/g, more preferably ≥190 ml/g and most preferably ≥225 ml/g, wherein the viscosity number is determined via solution viscometry according to the ISO 307 standard.

2 . A sole plate for a shoe, in particular a soccer boot, wherein the sole plate comprises the molded part of claim 1 .

3 . The sole plate according to claim 2 , further comprising an essentially non-foamed forefoot section and at least partially foamed midfoot section.

4 . The sole plate according to claim 3 , wherein the midfoot section has a greater thickness than the forefoot section.

5 . The sole plate according to claim 2 , wherein the midfoot section is adapted to provide a higher bending strength than the forefoot section.

6 . A shoe sole, comprising:
the sole plate according to claim 2 .

7 . A shoe comprising the shoe sole according to claim 6 .

8 . A mold configured for producing a molded part according to claim 1 , wherein the volume of a portion of the interior of the mold can be increased in order to achieve localized foaming of the mixture inside the portion.

9 . A mold according to claim 8 , comprising at least a first section and at least a second section, wherein the volume of the portion can be increased by moving the second section.

Assignees

• Adidas Ag

Inventors

• Holmes Christopher Edward
• Price Daniel Stephen
• Kirupanantham Giridharan
• Boyd Rowan John

Classifications

• A43B3/0078 Primary

  provided with logos, letters, signatures or the like decoration (A43B23/24 takes precedence) · CPC title

• A43B13/04

  Plastics, rubber or vulcanised fibre · CPC title

• B29L2031/504

  Soles · CPC title

• B29K2071/00

  Use of polyethers {, e.g. PEEK, i.e. polyether-etherketone or PEK, i.e. polyetherketone or derivatives thereof}, as moulding material · CPC title

• B29C44/12

  Incorporating or moulding on preformed parts, e.g. inserts or reinforcements · CPC title