A container includes a housing space, a first layer, a second layer and a gate mark. The first layer forms the housing space, and the second layer includes an adhered surface which is adhered externally to the first layer and a non-adhered surface which is not adhered to the first layer. The gate mark is formed on at least one of an inner surface of the first layer and the non-adhered surface.

A grip body of a body care article, such as toothbrush, includes a grip part, a neck part, and a head part. The grip body includes a first and a second material component of a thermoplastic plastic. Manufacturing of the grip body is performed via an injection moulding tool with at least one tool cavity, and the grip body including a first, second, and third material component of a first, second, and third thermoplastic material, respectively.

A method for integrally forming a sole with hobnails includes the following steps: providing a mold assembly, the mold assembly includes a sole forming member and a hobnail forming member, the hobnail forming member is movable with respect to the sole forming member; forming of sole and hobnails, injecting plastic material into the mold cavity to integrally form the sole and a hobnail; demolding the hobnail, moving the hobnail forming member with respect to the sole forming member to create a buffer space between the hobnail and the hobnail forming member; and demolding of the sole, taking the sole with the hobnail obtained by the previous step out of the mold assembly, wherein an arc-shaped paw portion of the hobnail is bent through the buffer space and then demolded.

A packaging article for containing and holding food products includes a barrier layer for limiting permeability of oxygen through and into the article and an oxygen scavenging layer, which oxygen scavenging layer together with a second plastic material is contained within a cavity in a first plastic material forming walls, bottom(s) and lid(s) of the packaging article, which first plastic material is suitable for contact with food products. A method of manufacturing a packaging finished in one injection molding cycle includes placing the barrier layer in a mold, injecting the first plastic material suitable for contact with food products into the mold, and injecting the second plastic material with the oxygen scavenger into the mold.

A manufacturing method includes an injection molding process of injection-molding a preform having a two-layer structure including an outer layer preform and an inner layer preform, and a blow molding process of blow molding the preform to mold a delamination container made of resin. The injection molding process includes an outer layer molding process of filling an outer layer injection mold with PET (outer layer resin material) to mold the outer layer preform and molding a thin film portion in a part of the outer layer preform, and an inner layer molding process of injecting PP (inner layer resin material) toward the thin film portion to break the thin film portion and filling an inner layer injection mold with PP having a temperature lower than a melting point of PET via the broken thin film portion to mold the inner layer preform.