Assertion: polypropylene | /r/HasProperty | combined with rubber
Facets:
value: to alter its properties
type: PURPOSE
value: during the production phase
type: TEMPORAL
Source sentences:
text: Polypropylene is a very customizable plastic since it can also be combined with other materials, such as rubber, in order to create an even stronger co-polymer.
text: During the production phase, polypropylene can be combined with other materials, such as rubber, to alter its properties.