Described herein are methods and systems for forming composite stringer assemblies or, more specifically, for shaping composite charges while forming these stringer assemblies. A system comprises a bladder, having a bladder core, and a bladder skin. The bladder core is formed from foam. The bladder skin is formed from an elastic material and encloses the bladder core. When a composite stringer assembly is formed, the bladder is positioned over a charge base. The charge base later becomes a stringer base, such as a fuselage section or a wing skin. A charge hat is then positioned over the bladder and is conformed to the bladder. A combination of the bladder skin and the bladder core provides support during this forming operation and later while the stringer assembly is cured. In some examples, the bladder core is collapsible for the removal of the bladder from the cavity of the stringer assembly.

The invention relates to a production mold for a rotor blade of a wind turbine plant, having two mold half-shells (3, 4) which during a production method of the rotor blade are disposed so as to be at least temporarily beside one another, and having at least one inner walkway (2c, 2d) that runs along so as to be between the two mold half-shells (3, 4), characterized by at least one escape path (40) which runs along below at least one of the two mold half-shells (3, 4).

The invention relates to a production mold for a rotor blade of a wind turbine plant, having two mold half-shells (3, 4) which during a production method of the rotor blade are disposed so as to be at least temporarily beside one another, and having at least one inner walkway (2c, 2d) that runs along so as to be between the two mold half-shells (3, 4), characterized by at least one escape path (40) which runs along below at least one of the two mold half-shells (3, 4).

A method of manufacturing a forming tool. The forming tool may include at least one die having a perimeter wall and a profile panel. At least a portion of the die may be manufactured using an additive manufacturing process. For instance, the profile panel may be manufactured using an additive manufacturing process or the profile panel and additional portions of the die, such as the perimeter wall, may be manufactured using an additive manufacturing process.

Provided are a preparation method of a piezoelectric composite material, and the application thereof. The preparation method includes: step 1, designing a curved-surface 3D printed mesh mold and forming the curved-surface 3D printed mesh mold by printing; step 2, cutting a blocky piezoelectric phase into a plurality of small piezoelectric columns; step 3, inserting the small piezoelectric columns into empty cells of the 3D printed mold; step 4, filling gaps between the piezoelectric columns and the 3D printed mold with a non-piezoelectric phase such as an epoxy resin, and curing and forming the non-piezoelectric phase; and step 5, grinding, polishing, and ultrasonically cleaning a prepared sample, and then performing an electrode coating operation on the sample to obtain a curved-surface piezoelectric composite material.

Particular embodiments of the invention include apparatus and methods for compensating for shrinkage of a polymeric material in a mold during curing operations. Embodiments of the method include providing a mold comprising a molding cavity defining an interior mold volume separated from an exterior environment and introducing a volume of polymeric material into the molding cavity. Such methods further include impeding the development of a void in the volume of polymeric material by, either: isolating the volume of polymeric material within the molding cavity from the exterior environment, or reducing the interior mold volume of the molding cavity to at least substantially consume a volume of polymeric material shrinkage. Such methods further include curing the polymeric material to form a molded polymeric form.

A blow molded bottle (1): a) which is self-collapsible during its emptying; b) which comprises at least two transversal grooves and/or ribs (6.1), preferably located in the tubular body portion (6), equipped with collapse starters (6.2); c) wherein the mean wall thickness (Tmean) of the tubular body portion (6) is—in an increasing order of preference—less than or equal to 200; 180; 160; 150 μm; preferably comprised between 65 and 150; and more preferably comprised between 90 and 130 μm. The invention also discloses a method, a preform (100) and a mold for the manufacture of the aforementioned container by blow molding. The invention also discloses a method for bottling liquid into the bottles (1), a method for dispensing the liquid, a dispenser for implementing the method and a method for packing the thin-walled bottles, in view of storage and transportation.

To solve the above problem, a pouch forming apparatus according to an embodiment of the present invention includes: a die in which a forming space is recessed inward from a top surface thereof; a partition wall partitioning the forming space into first and second forming spaces; a stripper disposed above the die and configured to descend to contact the die with the pouch film therebetween to fix the pouch film to be seated on a top surface of the die; and an electromagnetic force generation part disposed above the forming space and configured to generate electromagnetic force and configured to apply the electromagnetic force to the forming space.

Provided is a multilayer composite interior component, in which boundary protrusions (20b) aligned in a row on both sides of a parting line (L) are arranged in a staggered manner so as to bend toward the boundary protrusions (20b) in the row opposite thereto. In this way, even when the boundary protrusions (20b) are separated from the parting line (L) by a predetermined distance (g1, g2) in order to maintain the strength of a divided mold, the boundary protrusions (20b ) bend and deform so as to fill in an empty part in the vicinity of the parting line (L) when a surface layer member (16) is pressed by fingers or a hand. As a result, a feeling of unevenness resulting from decreases in reaction force in the vicinity of the parting line (L) is minimized, thus making it possible to obtain a more uniform texture.

A rotatable base for a porous pad has openings that provide for improved flow distribution of a liquid in the base across a substrate. The rotatable base can be molded from a two piece mold and the openings can have draft angles to facilitate the molding process.