236results about How to "Excellent oxygen barrier properties" patented technology

A coating compositions for providing substrates with oxygen barrier properties is disclosed. The substrate may be, for instance, a film, such as a polyester film. The coating composition includes a copolymer of maleic acid and acrylic acid and a copolymer of vinyl alcohol and a vinylamine. The barrier coating formed from the coating composition is typically less than about 1 micron in thickness and provides reduced oxygen transmission even at relatively high relative humidities.

A multi-layer biaxially stretched blow bottle having a 3-layer structure of PET / nylon MXD6 / PET or a 5-layer structure of PET / nylon MXD6 / PET / nylon MXD6 / PET, wherein the oxygen gas transmission coefficient of the nylon MXD6 layer is at most 6.0×10−14 cm3·cm / cm2·sec·cmHg as measured under conditions of a temperature of 23° C. and a relative humidity of 80%, and a production process of the bottle by biaxial stretch blow molding at a low stretching temperature and high draw ratios.

The present invention provides a container for retort packaging comprising a laminated film having an outermost layer comprising a layer formed of a cross-linked structure containing ester bonds between poly(meth)acrylic acid (A) and polyalcoholic polymer (B); a resin composition having at least the chemical structures (X) [poly(meth)acrylic acid (A) residue], (Y) [poly(meth)acrylic acid (A)-polyalcoholic polymer (B) residue] and (Z) [metal cross-linked ionic residues], wherein the degree of esterification defined by the equation: degree of esterification=c / (b+c+d) is from 0.01 to 0.5 and the degree of ionization defined by the equation: degree of ionization=c / (b+c+d) is from 0.01 to 0.9 (wherein b, c and d represent the molar ratios of the carbon-oxygen double bond in the chemical structure of the resin composition; and a gas barrier film comprising the same.

The invention relates to a non-foil packaging laminate for liquid food packaging comprising a first layer of paper, which first paper layer is situated towards the inner side of the laminated packaging material and a second layer of paper situated towards the outer side of the laminated packaging material, said first and second paper layers being laminated to each other by means of a first intermediate bonding layer in a sandwich structure, the packaging laminate further comprising a gas barrier coating layer, coated onto the inner side of the first paper layer by liquid film coating of a liquid gas barrier composition onto said first paper layer and subsequent drying, the liquid composition containing a polymer binder dispersed or dissolved in an aqueous or solvent medium, and a further barrier layer towards water vapour laminated and bonded to the barrier- coated inside of the first paper layer. The invention also relates to a method for manufacturing of the packaging laminate and to a packaging container that is made from the packaging laminate.

The present invention makes it possible to provide a film exhibiting an excellent oxygen-gas barrier properties and an excellent moisture proofness, the film containing at least a multivalent metal salt of a polycarboxylate-based polymer (A), the film having the density which is not lower than 1.80 g / cm3; the surface ratio α [the peak surface S1 (3700 to 2500 cm−1) / the peak surface S2 (1800 to 1500 cm−1)] of an infrared absorption spectrum which is not larger than 2.5; and the peak ratio β [the peak A1 (1560 cm−1) / the peak A2 (1700 cm−1)] of the infrared absorption spectrum which is not smaller than 1.2, by means of applying a solution containing the polycarboxylate-based polymer (A) and the multivalent metal compound (B) to a substrate, thus obtaining a dried film, and thereafter treating the dried film with heat under predetermined conditions. Accordingly, the present invention makes it possible to provide packaging materials and packaging containers for not only foods which are required not to contact an oxygen gas, but also foods, beverages, chemicals, pharmaceuticals, and precision metal parts such as electronic parts, as well as members of electronic equipment, all of which are required to be protected from moisture.