Expanded polyamide pellets

• Main Authors: KERLING SABRINA, FATHI AMIR, TARRIER JAMES, ALTSTADT VOLKER, PRICE DANIEL STEPHEN, WARDLAW ANGUS, ROBERTSON CHRISTOPHER, KIRUPANANTHAM DHARAN, RAPS DANIEL, CHRISTOPHER EDWARD HOLMES, LE TRU HUU MINH, HILL JAN, CLEMENS KEILHOLZ, SMITH PAUL, THOMAS KOPPL
• Format: Patent
• Language: Chinese; English
• Published: 19.02.2021
• Subjects: AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING; CHARACTERISTIC FEATURES OF FOOTWEAR; CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; FOOTWEAR; GENERAL PROCESSES OF COMPOUNDING; HUMAN NECESSITIES; INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULARARTICLES; MAKING GRANULES OR PREFORMS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; PARTS OF FOOTWEAR; PERFORMING OPERATIONS; PREPARATION OR PRETREATMENT OF THE MATERIAL TO BESHAPED; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIALCONTAINING PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR; SHAPING OR JOINING OF PLASTICS; THEIR PREPARATION OR CHEMICAL WORKING-UP; TRANSPORTING; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL; WORKING-UP

The invention refers to a method for producing expanded polymer pellets, which comprises the following steps: melting a polymer comprising a polyamide; adding at least one blowing agent; expanding themelt through at least one die for producing an expanded polymer; and pelletizing the expanded polymer. The invention further concerns polymer pellets produced with the method as well as their use, e.g. for the production of cushioning elements for sports apparel, such as for producing soles or parts of soles of sports shoes. A further aspect of the invention concerns a method for the manufactureof molded components, comprising loading pellets of an expanded polymer material into a mold, and connecting the pellets by providing heat energy, wherein the expanded polymer material of the pelletsor beads comprises a chain extender. The molded components may be used in broad ranges of application. 本发明涉及生产膨胀聚合物粒料的方法，其包括以下步骤：熔融包含聚酰胺的聚合物；加入至少一种发泡剂；通过用于生产膨胀聚合物的至少一个模头使熔体膨胀；将膨胀聚合物造粒。本发明还涉及用该方法生产的聚合物粒料及其用途，例如用于生产用于运动服装的缓冲元件，缓冲