PURPOSE: To provide an excellent shrinkability while being excellent in the usability by raising the rate of open cells over 40% in the cell structure by mainly employing a shrinkable foam polyolefin resin sheet.
CONSTITUTION: A shrinkable foam polyolefin resin 1 made of polyethylene resin or the like is laminated on a shrinkable non-foam polyolefin resin film 2 made of a polyethylene resin or the like to form a sheet S for the formation of a shrink sleeve. A foam sheet 1 is molded by adding a foaming agent and other additives to a polyolefin resin comprising a low-density polyethylene and an ethylene acetatevinyl copolymer, a copolymer resin of these resin and a mixed resin thereof. The expansion ratio of the foam sheet 1 is adjusted by a foaming agent. Then, a core agent such as talc serving as foaming core works to change the generation ratio of closed cells and open cells. The use of the sheet S for the formation of a shrink sleeve can lower the shrinking temperature with a very large shrinkability under the heating as the foam 1 as main component exceeds 40% in the rate of open cells.
FUYUKI CHIYUUKEI
FUKUMOTO YUKITSUGU
| JPS56139950A | 1981-10-31 | |||
| JPS56162639A | 1981-12-14 | |||
| JPS5161389A | 1976-05-27 |