FIELD: protective materials.
SUBSTANCE: invention relates to technology for preparing thermal shrinkage polyethylene films that can be used as package material. Film has thickness from 5 to 500 mcm and prepared from polyethylene representing a mixture of homopolymer and copolymer of ethylene, and showing molecular-mass distribution value in the range from 5 to 40 and average-mass molecular mass at least 100 kDa. Invention provides preparing films satisfying for requirements with respect to the melt strength, strength in cold state and other mechanical properties at stage of hot and cold shrinkage and after shrinkage also.
EFFECT: improved and valuable properties of film.
23 cl, 3 tbl, 3 ex
| Title | Year | Author | Number |
|---|---|---|---|
| SORTING SHRINK FILM | 2020 |
|
RU2775985C1 |
| POLYMERIC FILM | 2003 |
|
RU2296775C2 |
| FILMS PREPARED FROM ETHYLENE COPOLYMERS | 1994 |
|
RU2156779C2 |
| POLYMERS BASED ON ETHYLENE AND PRODUCTS PRODUCED FROM THEM | 2013 |
|
RU2638261C2 |
| POLYETHYLENES WITH INCREASED MOLECULAR WEIGHT DISTRIBUTION | 2014 |
|
RU2672730C2 |
| LAMINATE FILM | 2008 |
|
RU2490135C2 |
| METHOD OF PRODUCING POLYOLEFIN FILM COMPOSITION AND FILMS OBTAINED USING SAID METHOD | 2017 |
|
RU2731614C1 |
| STRETCHABLE PACKING FILM | 2004 |
|
RU2340635C2 |
| AIR-PERMEABLE FILMS | 2003 |
|
RU2299219C2 |
| MULTILAYER NON-SEWN HEAT SHRINKING PACKAGING FILMS | 2018 |
|
RU2749311C2 |
