A heat-shrinkable film comprises a blend of 35-75 wt % of an ethylene-based polymer, 10-45 wt % of an ethylene/unsaturated ester copolymer, and 5-30 wt % of a plastomer, with the blend making up at least 20 wt % of the film. The ethylene-based polymer has a peak melt point ≥95° C. The plastomer has a peak melt point ≤90° C. and a melt index of ≤1.1 g/10 min. The film comprises a cross-linked polymer network which has been strained by solid state orientation. The film has a total free shrink at 85° C. of at least 90% and an energy-to-break of at least 0.70 J/mil.

The present invention includes a mixed composition of an organosilicon compound (A) represented by formula (a1), an organosilicon compound (B) represented by formula (b1) and a curing inhibitor (C), and a mixed composition of the organosilicon compound (A) represented by formula (a1), the organosilicon compound (B) represented by formula (b1), the curing inhibitor (C) and water (D).

R.sup.a1—Si(X.sup.a1).sub.3  (a1)

Si(R.sup.b1).sub.b20(X.sup.b1).sub.4-b20  (b1)

Disclosed is a stretched laminated film 30 having a heat-sealable layer 10 composed of a resin composition which contains 50 to 97 parts by mass of a propylene-based polymer (A) having a melting point (Tm) of not lower than 120° C. but not higher than 170° C. and comprising more than 50% by mol of a structural unit derived from propylene, 3 to 50 parts by mass of a 1-butene-based polymer (B) having a melting point (Tm) of lower than 120° C. and comprising 10 to 90% by mol of a structural unit derived from 1-butene and 10 to 90% by mol of a structural unit derived from an α-olefin having 3 or 5 to 20 carbon atoms, and optionally 3 to 30 parts by mass of an ethylene α-olefin copolymer (C) comprising 50 to 99% by mol of a structural unit derived from ethylene and 1 to 50% by mol of a structural unit derived from an α-olefin having 3 to 20 carbon atoms, wherein the sum of the component (A) and the component (B) is 100 parts by mass; and a base layer 20.

A sealing film suitable for food packaging is disclosed, which adopts the following solution. The sealing film comprises, in sequence, a PET layer, a VMPET layer and a PE layer from outside to inside, wherein the PE layer comprises 100-110 parts of PE, 15-20 parts of EVA, 15-20 parts of EAA, 55-60 parts of HDPE and 10-15 parts of LLDPE in parts by mass. In this manner, the addition of HDPE and LLDPE into the PE layer is intended to enhance the tensile strength of the sealing film.

A polyethylene-based polymer composition suitable for use in a shrink film, the polyethylene-based polymer composition comprising a low density polyethylene having a density of from 0.917 g/cc to 0.935 g/cc and melt index, I.sub.2, of from 0.1 g/10 min to 5 g/10 min, a linear low density polyethylene having a density of from 0.900 g/cc to 0.965 g/cc and melt index, I.sub.2, of from 0.05 g/10 min to 15 g/10 min, or combinations thereof, a material that absorbs radiation in the near-infrared, visible, and ultraviolet spectral wavelength ranges, and optionally, a medium density polyethylene, a high density polyethylene, or combinations thereof.

A propylene polymer composition made from or containing:

a) from 15 wt % to 35 wt % of a propylene 1-hexene copolymer containing from 6.2 to 8.5% by weight, of 1-hexene derived units and having a Melt Flow Rate from 3.5 to 8.5 g/10 min;
b) from 15 wt % to 35 wt % of a propylene 1-hexene copolymer containing from 10.4 wt % to 14.5 wt %, of 1-hexene derived units and having a Melt Flow Rate from 3.5 to 8.5 g/10 min; and
c) from 38 wt % to 68 wt % of a propylene ethylene copolymer containing from 3.4 wt % to 5.7 wt % of ethylene derived units and having a Melt Flow Rate from 3.5 to 12.0 g/10 min,
wherein the sum of the amount of a), b) and c) being 100.

A heat-shrinkable polyester film is made of a polyester resin composition, and has first and second crystal melting peaks at a respective one of first and second melting temperatures determined via differential scanning calorimetry. The heat-shrinkable polyester film further has a melting enthalpy in a range of larger than 0 J/g and at most 7 J/g which is calculated via integration of an area below the second crystal melting peak. The polyester resin composition includes a first polyester resin having a glass transition temperature ranging from 40° C. to 80° C., and a second polyester resin having a crystal melting temperature ranging from 220° C. to 250° C. and a melting enthalpy ranging from 40 J/g to 60 J/g.

New C.sub.2C.sub.3 random copolymer (RACO), which shows improved sealing behaviour due to low sealing initiation temperature (SIT) and high hot tack force. In addition, the inventive C.sub.2C.sub.3 random copolymer (RACO) shows an excellent sterilization behaviour, i.e. retention of low haze level after sterilization. The present invention is furthermore related to the manufacture of said C.sub.2C.sub.3 random copolymer (RACO) and to its use.

A resin composition for a sealant has excellent heat-sealing strength with respect to a substrate, and a reduced elution amount thereof into normal heptane.

A resin composition for a sealant includes: a resin (A) which is an ethylene-(meth)acrylic acid ester copolymer in which a content of a (meth)acrylic acid ester unit is from 10% by mass to 25% by mass; and a tackifying resin (B), in which a content of the resin (A) is more than 45% by mass with respect to a total amount of resin components in the resin composition for a sealant, and a content of the tackifying resin (B) is from 0.1% by mass to 10% by mass with respect to the total amount of the resin components in the resin composition for a sealant.

An ethylene-based resin comprising a high molecular weight component and a low molecular weight component, wherein the high molecular weight component comprises an ethylene/alpha-olefin copolymer or ethylene homopolymer, and has a density ranging from 0.940 g/cc to 0.960 g/cc, and a high load melt index (I21.6) ranging from 4 g/10 min to 15 g/10 min, and wherein the ethylene-based resin has: an overall density ranging from greater than 0.955 to less than or equal to 0.970 g/cc, an overall melt index (I2.16) ranging from 0.5 g/10 min to 7 g/10 min, and less than 0.2 vinyls per 1000 carbon atoms.