PETTERSSON, TORBJOERN,KASSIBRAHIM, JAN,ODEBERG, JOHAN
申请号：
CA2566847
公开号：
CA2566847C
申请日:
2005.06.01
申请国别(地区):
CA
年份:
2013
代理人:
摘要：
A milking device according to the invention comprises at least a teat-receiving flexible sleeve, adapted to be positioned on/over a teat. A firstportion thereof comprises a material, selected from the group consisting ofthermo-plastic elastomers (TPE), as defined in ISO 18064, and a second portionthereof comprises a material selected from the group consisting ofthermoplastics. The method of making a milking device, in particular a teatcup liner, is a molding process carried out in two or more steps. In the firststep, a thermoplastic, preferably polypropylene (PP) or polyamide (PA), isinjected in a mold defining only those portions of the device that are toexhibit a higher stiffness or rigidity, such as couplings. The stiffer parts,are demolded from the mold, and placed in a second mold, into which, as asecond molding step, a suitable TPE is injected. Further steps can beperformed if required by the design.
