A preform configured to form a container when the preform is seated in a cavity of a mold and the preform is expanded within the cavity of the mold by introducing an incompressible fluid under a blow pressure into the preform to stretch the preform to assume a shape of the surrounding cavity. The preform includes a high-density polyethylene (HDPE) resin having: a melt flow index of between 0.3 and 10.0 grams per 10 minutes at a temperature of 190° C. under 2.16 kilograms of load through a test fixture of ASTM D1238; a polydispersity index of 4-24; and a density of between 0.943 and 0.965 grams per cubic centimeter.

A high-density polyethylene (HDPE) resin configured to be molded into a preform that can be biaxially expanded within a cavity of a container mold by introducing an incompressible fluid under pressure into the preform to stretch the preform to assume a shape of a surrounding mold cavity of the container mold. The HDPE resin has: a melt flow index of between 0.3 and 10.0 grams per 10 minutes at a temperature of 190° C. under 2.16 kilograms of load; a polydispersity index of 4-24; and a density of 0.943-0.965 grams per cubic centimeter.

The object of the present invention is to provide a coating agent for forming a coating film having barrier properties and stretchability and to provide a resin container comprising a coating film formed using the coating agent on a surface thereof, wherein the coating film has high barrier properties and is less prone to film breakage during stretching.

LDH, which is in the form of nanometer-scale particles, is added along with PVA.

A preform configured to be blow-molded into a container. The preform includes a first layer and a second layer. The first layer is an active oxygen scavenger layer including an oxygen scavenger, a catalyst, and a first material having up to 25% recycled polymer. The second layer includes a second material having at least 25% recycled polymer.

A high-density polyethylene (HDPE) resin configured to be molded into a preform that can be biaxially expanded within a cavity of a container mold by introducing an incompressible fluid under pressure into the preform to stretch the preform to assume a shape of a surrounding mold cavity of the container mold. The HDPE resin has: a melt flow index of between 0.3 and 10.0 grams per 10 minutes at a temperature of 190? C. under 2.16 kilograms of load; a polydispersity index of 4-24; and a density of 0.943-0.965 grams per cubic centimeter.

A preform configured to be blow-molded into a container. The preform includes a first layer and a second layer. The first layer is an active oxygen scavenger layer including an oxygen scavenger, a catalyst, and a first material having up to 25% recycled polymer. The second layer includes a second material having at least 25% recycled polymer.

A method for forming a preform or part including the following: dispensing an initial amount of an additive and a thermoplastic resin into an injection molding machine; forming the preform or part by operating a molding machine to inject the thermoplastic resin and the additive at the initial amount into a mold of the preform or part; measuring realized visual parameters of the preform or part; comparing the realized visual parameters to the target visual parameters and determining whether the realized visual parameters are within a predetermined acceptable range of the target visual parameters; if the realized visual parameters are outside the predetermined acceptable range of the target visual parameters, adjusting the initial amount of the additive to a modified amount estimated to achieve the target visual parameters; and forming an additional preform or part by operating the injection molding machine to inject the thermoplastic resin and the additive at the modified amount into the mold of the preform or part.

A preform configured to be blow-molded into a container. The preform includes a first layer and a second layer. The first layer is an active oxygen scavenger layer including an oxygen scavenger, a catalyst, and a first material having up to 25% recycled polymer. The second layer includes a second material having at least 25% recycled polymer.