FIELD: process engineering.
SUBSTANCE: invention relates to production of polymer tape from secondary polyethylene terephtalate suitable for use as edge tape, etc. Polymer tape is produced by extruding the melt from secondary polyethylene terephtalate that contains inhomogeneous mix of polyethylene terephtalate wastes with initial characteristic viscosity of 0.60-0.80 dl/g. Note here that said initial polyethylene terephtalate is composed of wastes of amorphous-crystalline polyethylene terephtalate mixed with 0.1-1.0 wt % of 1,3-phenylene-bis(2-oxazollinum). Obtained mix is extruded in vacuum to make the tape by spraying.
EFFECT: higher strength and elongation.
2 cl, 1 tbl, 3 ex
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD OF MAKING POLYMER TAPE FROM SECONDARY POLYETHYLENE TEREPHTALATE | 2011 |
|
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