A packaging sheet is described. The sheet comprises a first rigid component, a second rigid component, and a multilayer film. Each of the first rigid component and the second rigid component comprises styrenic polymer, aromatic polyester, aliphatic polyester, polypropylene homopolymer, or blends thereof. The multilayer film is a blown, coextruded film positioned between the first rigid component and the second rigid component and comprises (a) an outer layer, (b) a barrier component, and (c) an inner layer, where the barrier component is positioned between the outer layer and the inner layer. The first rigid component is coated on or laminated to a first surface of the multilayer film and the second rigid component is coated on or laminated to an opposing second surface of the multilayer film such that the sheet is not a fully coextruded sheet. Various embodiments of the sheet are also described.

There is provided a co-injection molded multilayer structure comprising a barrier layer and outer layers laminated to contact with the barrier layer on its both sides, wherein the barrier layer is made of a resin composition (X) comprising an ethylene-vinyl alcohol copolymer (A) and an alkali metal salt (B) of a higher fatty acid, having a melting point of 250° C. or lower; the ethylene-vinyl alcohol copolymer (A) has an ethylene unit content of 20 to 60 mol % and a saponification degree of 90% or more, and a content of the alkali metal salt (B) in the barrier layer is 50 to 1500 ppm in terms of metal atoms; and the outer layers are made of a resin composition (Y) comprising an unmodified high-density polyethylene (F) and a maleic anhydride-modified polyethylene (G), and a maleic anhydride modification rate relative to the whole resin composition (Y) is 0.005 to 0.1 wt %. This co-injection molded multilayer structure has excellent adhesiveness, so that its oxygen barrier performance can be maintained even after being subjected to an impact due to falling or the like.

A recyclable article includes 50-90 wt % of at least one polyethylene having a density in the range 0.94 to 0.97 g/cm.sup.3. The article exhibits Young's modulus less than 700 MPa; and a haze value less than or equal to 50%. The recyclable article can be included in a film or a laminate. The article can be prepared using a blown film extrusion process.

Films including a water-soluble layer and a vapor-deposited organic coating are disclosed. The films can optionally further include a vapor-deposited inorganic layer. The films exhibit enhanced barrier properties.

The invention describes a flexible tubular article for transport of volatile hydrocarbons comprising: (a) an inner layer of a polyvinylidene difluoride (PVDF) polymer or a polyvinylidene difluoride copolymer; (b) an intermediate thermoplastic polyurethane (TPU) layer extruded in tubular form over the inner PVDF layer, and (c) a polyvinyl chloride polymer extruded in tubular form over the outside surface of the intermediate layer and being coextensive therewith. The tubular articles of the invention have a maximum permeation rating of 15 g/m.sup.2/day under SAE J1737 test conditions.

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.

Films including a water-soluble layer and a vapor-deposited organic coating are disclosed. The films can optionally further include a vapor-deposited inorganic layer. The films exhibit enhanced barrier properties.

A resealable package assembly is described. The package assembly includes a selectively positionable flap that covers an aperture or enables access through the aperture into the package. The flap and package include provisions for releasably engaging the flap to the package to seal the interior of the package. Provisions for grasping the tab and indicating whether tampering has occurred are also described.

A barrier structure intended for the storage and/or transport of fluids including at least one barrier layer (1) including an MXDT/XT copolyamide in which: MXDT is an amide unit present in a molar ratio of between 5 and 45%, preferably between 15 and 45%, and more preferably between 20 and 45%, where MXD represents m-xylylenediamine (MXD) and T represents terephthalic acid, XT is a majority amide unit present in a molar ratio of between 55 and 95%, preferably between 55 and 85%, and more preferably between 55 and 80%, where X is a C9 to C18, preferably C9, C10, C11 and C12, linear aliphatic diamine, and where T is terephthalic acid, said copolyamide having a melting point: 250° C.<T.sub.f≤300° C. as determined according to standard ISO 1 1357-3 (2013).

A barrier structure for the storage and/or transport of fluids, including at least one barrier layer (1) including an MPMDT/XT copolyamide in which: MPMDT is a unit with an amide motif having a molar ratio of between 5 and 50%, particularly between 5 and 45%, preferably between 15 and 45%, more preferably between 20 and 45%, where MPMD is 2-methyl pentamethylene diamine (MPMD) and T is terephthalic acid, XT being a unit with a majority amide motif having a molar ratio of between 50 and 95%, particularly between 55 and 95%, preferably between 55 and 85%, more preferably between 55 and 80%, where X is a C9 to C18, preferably C9, C10, C11 and C12, linear aliphatic diamine, and where T is terephthalic acid, the copolyamide having a melting point of 250° C.<T.sub.f≤300° C. as determined according to the ISO norm 1 1357-3 (2013).