Abstract: A thermoplastic resin composition containing an oxygen-absorbing agent, wherein a resin matrix of the thermoplastic resin composition is substantially non-compatible and is composed of a blend of thermoplastic resins or elastomers, and the non-compatible thermoplastic resins and elastomers are present as a non-uniformly distributed structure in the resin matrix. The packaging container or cap of this invention suppresses the lowering of flavor retention incident to the dissolving out of the oxygen absorbing agent or its oxidation product even after retorting sterilization. The preservability of the contents and flavor retention can be achieved for a long period of time. According to a preferred embodiment, the oxygen absorbing speed can be increased. After storage for a long time, or after heat sterilization, a rugged state does not occur. There can be formed the oxygen-absorbing resin composition and the packaging container having excellent outer appearance.

Abstract: A thermoplastic resin composition containing an oxygen-absorbing agent, wherein a resin matrix of the thermoplastic resin composition is substantially non-compatible and is composed of a blend of thermoplastic resins or elastomers, and the non-compatible thermoplastic resins and elastomers are present as a non-uniformly distributed structure in the resin matrix. The packaging container or cap of this invention suppresses the lowering of flavor retention incident to the dissolving out of the oxygen absorbing agent or its oxidation product even after retorting sterization. The preservability of the contents and flavor retention can be achieved for a long period of time. According to a preferred embodiment, the oxygen absorbing speed can be increased. After storage for a long time, or after heat sterilization, a rugged state does not occur. There can be formed the oxygen-absorbing resin composition and the packaging container having excellent outer appearance.

Abstract: An oxygen-absorbing container capable of forming active sites (polymer radicals) at any moment when it is desired to absorb oxygen remaining in the container and a method of producing packaged food using the container. A package capable of excellently preserving the content maintaining flavor can be easily produced through simple operation using an apparatus which is not so large in scale. The oxygen-absorbing plastic container has at least a portion that is made of a photo-oxidatively degradable resin or a resin composition containing a photo-oxidatively degradable resin and a photo-oxidation promoting agent that absorbs ultraviolet rays and visible light.

Abstract: A container closure comprising a container closure shell and a resin liner applied to the inner surface side of the shell, wherein the resin liner is constituted by an upper layer portion which is composed of a resin composition containing such additives as disoxidation agent, drying agent, deodorant, antibacterial agent and thermo color agent and which forms a panel portion on the inside of the hermetically sealing portion, a lower layer portion which is composed of a thermoplastic resin having cushioning property and elasticity and which is interposed between the upper layer portion and the top surface of the shell to join them together, and a hermetically sealing portion which is formed on the outer peripheral side of the panel portion integrally with the lower layer portion.

Abstract: A container closure comprising a container closure shell and a resin liner applied to the inner surface side of the shell, wherein the resin liner is constituted by an upper layer portion which is composed of a resin composition containing such additives as disoxidation agent, drying agent, deodorant, antibacterial agent and thermo color agent and which forms a panel portion on the inside of the hermetically sealing portion, a lower layer portion which is composed of a thermoplastic resin having cushioning property and elasticity and which is interposed between the upper layer portion and the top surface of the shell to join them together, and a hermetically sealing portion which is formed on the outer peripheral side of the panel portion integrally with the lower layer portion.

Abstract: Disclosed is an oxygen-absorbing resin composition valuable for preserving water-containing contents such as drinks and precooked food, which comprises a heat-formable resin or resin composition having an oxygen permeation coefficient larger than 10.sup.-12 cc.multidot.cm/cm.sup.2 .multidot.sec.multidot.cmHg at a temperature of 20.degree. C. and a relative humidity of 0% and a water adsorption of at least 1% in pure water at 20.degree. C., and an oxygen scavenger incorporated into said resin or resin composition, and a laminate, a liner, a cap and a vessel, which are formed by using this oxygen-absorbing resin composition.

Abstract: Disclosed is a plastic multilayer vessel having a laminate structure comprising an intermediate layer of a resin composition formed by incorporating an organic metal complex of a transition metal into a gas-barrier resin having a specific oxygen permeation coefficient and a specific water absorption, and outer and inner layers of a moisture-resistant thermoplastic resin disposed on both the sides of the intermediate layer. This vessel shows an excellent resistance to the permeation of oxygen even under conditions where water and heat simultaneously act.

Abstract: A container is made of a laminated material that includes a tin layer which is exposed on the inner surface side of the container. Oxygen remaining in the container and included in the content is trapped by the reducing action of tin, and the content is prevented from being oxidized. Further, the remaining enzymes are de-activated and flavor can be excellently retained.

Abstract: In a plastic multi-layer vessel, by forming a layer of a resin composition formed by incorporating an oxygen scavenger, optionally with a water-absorbing agent, in a gas barrier resin, a combination layer comprising a layer of a gas barrier thermoplastic resin and a layer of a resin composition formed by incorporating an oxygen scavenger in a moisture-absorbing thermoplastic resin, or a combination layer comprising a layer of a resin composition formed by incorporating an oxygen scavenger into a gas barrier resin and a layer of a resin composition formed by incorporating an water-absorbing agent into a thermoplastic resin, the resistance against the permeation of oxygen under heat sterilization conditions and after the heat sterilization can be highly improved, and the quantity of oxygen in the vessel can be controlled to a very low level.

Abstract: Disclosed is a vessel closure provided with an easily openable liner, said liner being composed of an olefin resin or olefin resin composition comprising as a lubricant two different lubricants having different functional characteristics whereby the quantity of the lubricant immigrating to the surface of the liner is effectively controlled within a certain range at temperatures of a broad range and the opening torque of the closure is controlled at a low level at storage temperatures of a broad range.