JP2021138133A5 - - Google Patents

Claims (11)

A heat-shrinkable film having a coating layer containing an antistatic agent on at least one side of a layer containing a polyester resin as a main component, which satisfies the following conditions a) and c) , and has no charge in the coating layer. A heat-shrinkable film in which the content of an active ingredient of an inhibitor is 0.0012 g/m ² or more and 0.015 g/m ² or less .
a) The surface resistivity of the coating layer is 5.0 × 10 ¹¹ (Ω/sq) or less at a temperature of 23 °C and an atmosphere of 30% relative humidity, and 1.0 × 10 at a temperature of 23 °C and an atmosphere of 50% relative humidity. ¹¹ (Ω/sq) or less
c) Shrinkage rate in the main shrinkage direction when immersed in warm water at 80°C for 10 seconds is 20% or more
A claim in which the antistatic agent contains at least one of a cationic antistatic agent and an anionic antistatic agent in an amount of 35% by mass or more based on the total amount of the antistatic agent, when the total amount of the antistatic agent is 100% by mass. 1. The heat-shrinkable film according to 1. A static friction coefficient measured in accordance with JIS K7125 of one surface and the other surface of the heat-shrinkable film is 0.20 or more and 0.50 or less at a temperature of 23° C. and a relative humidity of 50%. 3. The heat-shrinkable film according to 1 or 2. The heat-shrinkable film according to any one of claims 1 to 3, having a haze value of 7% or less as measured in accordance with JIS K7136 . The heat shrinkage according to any one of claims 1 to 4 , wherein the charging voltage half-life of the coating layer measured in accordance with JIS L1094 is 5 seconds or less at a temperature of 23°C and an atmosphere of 50% relative humidity. sex film. The heat-shrinkable film according to any one of claims 1 to 5, wherein the polyester resin is an aromatic polyester resin or a polylactic acid resin. The aromatic polyester resin is a copolymerized polyester resin , and the copolymerized components include 1,4-butanediol, neopentyl glycol, diethylene glycol, polytetramethylene glycol, 1,4-cyclohexanedimethanol, 1, The heat-shrinkable film according to claim 6, comprising at least one selected from the group consisting of 3-propanediol and isophthalic acid. The polylactic acid resin is made of a copolymer of D-lactic acid and L-lactic acid, and the D/L ratio of D-lactic acid and L-lactic acid is D/L=1/99 to 10/90, or The heat-shrinkable film according to claim 6 , which has a coefficient of 90/10 to 99/1 . A molded article using the heat-shrinkable film according to any one of claims 1 to 8 as a base material. A heat-shrinkable label using the heat-shrinkable film according to any one of claims 1 to 8 as a base material. A container equipped with the molded article according to claim 9 or the heat-shrinkable label according to claim 10 .