A container production method by liquid blow molding. The method includes a pushing step in which a liquid is collected from a preform at the timing at which the pressure inside of the preform starts rising by pushing of the expanded and deformed preform by a movable mold portion of a blow molding mold so that the rise in the pressure is suppressed or prevented.

Provided is a method for manufacturing a container containing a content fluid, including: a molding step of stretching a bottomed tubular preform that is heated to a temperature at which the preform is stretchable so as to form the container by means of pressure of the content fluid injected into the preform through a mouth portion; a sealing step of sealing the content fluid by fitting a cap body to the mouth portion; and a pressurizing step of increasing an inner pressure of the container, wherein the container includes an invertible deforming portion that is freely invertible and deformable toward an inside of the container, and in the pressurizing step, the inner pressure of the container is increased by reducing a volume of the container by inverting and deforming the invertible deforming portion toward the inside of the container.

Blow molding tools and a method of blow molding which provide that the tool have a retractable push up section in the base which allows for the article molded by the tool to have a recessed base internal to an otherwise hollow structure. As the push up is moveable, adjustment of the push up portion can be performed during an automated blow molding operation so as to allow release of the blow molded article.

A blow mold unit including: a blow mold including first and second blow cavity split molds and a plurality of raised bottom molds; first and second pressure receiving members; first and second fixing plates to which the first and second blow cavity split molds and the first and second pressure receiving members are respectively fixed; a third fixing plate interposed between the first and second fixing plates and to which the raised bottom molds are fixed at a first surface thereof; a pressure receiving rod extending down from a second surface; and a placement portion fixed to at least one of the first and second fixing plates and placing the third fixing plate thereon when the first and second blow cavity split molds are closed. The pressure receiving rod includes a first engaging portion engageable with a second engaging portion in a vertical direction.

Method for forming a holder (1), by blow moulding, with a wall (3), whereby a preform is pushed against a first and second mould part (10, 11) to form an intermediate form, in which the second mould part (11) is moved and takes the intermediate form with it in order to form an edge (5) between the first and second mould part (10, 11), whereby the mould parts (10, 11) are such that the edge (5) includes a first and second edge part (13, 14)), of which the second (14) is closer to the wall (3) than the first, of which the first (13) makes an angle () to the direction of movement of the second mould part (11) and of which the second (14) makes a larger angle () to it.

A method for manufacturing a bottle including forming the bottle (10) that is formed in a bottomed tubular shape and has a bottom wall section (19) provided with a contact part (18) positioned at an outer circumferential edge thereof and a deformable tube part that is of a multilevel topped tubular shape, is provided upright at the contact part (18), and blocks an inside of the contact part (18); the method having a primary blow molding process of performing biaxial stretch blow molding on a preform to obtain a primary intermediate molded article; a heat treatment process of heating the primary intermediate molded article to be forcibly shrunken and molded into a secondary intermediate molded article; and a secondary blow molding process of performing blow molding on the secondary intermediate molded article to obtain the bottle (10).

Embodiments include a blow molding machine, a method for replacing a blow mold unit, and a mold unit including a blow mold including first and second blow cavity split molds and a plurality of raised bottom molds; first and second pressure receiving plates; first and second fixing plates to which the first and second blow cavity split molds and the first and second pressure receiving plates are respectively fixed; a third fixing plate interposed between the first and second fixing plates and to which the raised bottom molds are fixed at a first surface thereof; a pressure receiving rod hanging down from a second surface and including an engaged portion engageable with the engaging portion; and a placement portion fixed to at least one of the first and second fixing plates and placing the third fixing plate thereon when the first and second blow cavity split molds are closed.

In a fixing member 110 formed with an insertion hole 113 for inserting an elevation rod 111, a communication hole 114 communicating with the insertion hole 113 is formed to open at a side surface of the fixing member 110. A key member 112 is inserted into the communication hole 114 and engaged with a key groove 118 provided at the distal end of the elevation rod 111. By so doing, the elevation rod 111 and the fixing member 110 are coupled together.

Described are a mold and molding process for manufacturing devices and containers that are scalable, modular, and lockable laterally and vertically with other like devices or containers. The mold is formed with a cup mold and top end mold sections specially designed to allow for molding and demolding a container with an undercut. The cup mold includes, on a vertical wall, one or more undercuts. Multiple undercuts may further form tongues with undercuts each of which forms a groove with undercuts on the molded article, and/or one or more grooves with undercuts each of which form a tongue with undercuts in the molded article. Molding and Demolding of the article with undercuts is further enabled by utilizing an improved method of molding said article with an undercut, and demolding said article from the mold once it is molded, by improvements to each stage of the molding process, including the preform stage, the conditioning station stage, the blow stage and the release stage.

A plastic container comprises an upper portion including a finish defining an opening into the container, a lower portion including a base defining a standing surface, a sidewall extending between the upper portion and the lower portion, the sidewall defining a longitudinal axis, and at least one substantially transversely-oriented pressure panel located in the lower portion. The pressure panel is movable between an outwardly-inclined position and an inwardly-inclined position to compensate for a change of pressure inside the container. The standing surface defines a standing plane, and the entire pressure panel is located between the standing plane and the upper portion of the container when the pressure panel is in the outwardly-inclined position.