B29C39/36

Articles of composite construction and methods of manufacture thereof

An article manufactured in a mould and which comprises a structural composite of plastics layers, the article having a wall defining an internal space for holding contents therein; wherein, the wall is formed from at least two layers of plastics materials; wherein a first of said layers comprises a thermoplastics material and at least a second layer comprises a thermosetting resin and a fibrous layer.

CASTING IN THE FORM OF A SINK
20220024082 · 2022-01-27 ·

A casting in the form of a sink, including a basin having a base, a rear wall, a front wall and two interconnecting side walls, and also a circumferential rim that extends to the side of the basin and consists of flat rim sections that extend in a straight line from the lateral edges of the rear wall, the side walls and the front wall. The sink is composed of a composite material including a cured polymeric binder and filler particles intercalated therein. A skirt that surpasses the height of the front wall at least in sections adjoins at least the rim section of the front wall, and its outer face extends at right angles from the outer face of the rim section and in a straight line up to the end thereof.

Fluid transfer assembly, a fluid transfer system, and a related method

Fluid transfer assemblies for transferring fluid into or out of a single vessel and distributing the fluid to multiple other vessels are provided. The fluid transfer assemblies are customizable, substantially aseptic, and single-use. The fluid transfer assemblies may be manufactured by solidifying polymeric materials to form a body around a mandrel with protrusions engaged to fluid conduits and leaving recesses in the solidified polymeric material to stretch the resultant body and remove the mandrel with protrusions. The resultant fluid transfer assembly may be surrounded by a rigid housing and valves may be engaged with the conduits and/or body to control the fluid flow within the fluid transfer assembly.

Fluid transfer assembly, a fluid transfer system, and a related method

Fluid transfer assemblies for transferring fluid into or out of a single vessel and distributing the fluid to multiple other vessels are provided. The fluid transfer assemblies are customizable, substantially aseptic, and single-use. The fluid transfer assemblies may be manufactured by solidifying polymeric materials to form a body around a mandrel with protrusions engaged to fluid conduits and leaving recesses in the solidified polymeric material to stretch the resultant body and remove the mandrel with protrusions. The resultant fluid transfer assembly may be surrounded by a rigid housing and valves may be engaged with the conduits and/or body to control the fluid flow within the fluid transfer assembly.

TOOL FOR FORMING A CAVITY IN A MODULAR PAVEMENT SLAB AND METHOD OF FABRICATING PAVEMENT SLABS

A modular pavement slab including a paving material set around a plurality of forming tools and defining a side face and a top surface. Each of the forming tools includes an elongate body extending along a longitudinal axis and having a sidewall exterior surface configured for removal of the elongate body through the side face. Each of the forming tools also includes a riser releasably coupled to the elongate body and extending in a direction noncollinear to the corresponding longitudinal axis.

TECHNIQUES FOR CASTING FROM ADDITIVELY FABRICATED MOLDS AND RELATED SYSTEMS AND METHODS
20210339432 · 2021-11-04 · ·

According to some aspects, a method is provided of casting an object from a mold, the method comprising obtaining a mold comprising a hollow shell of rigid material, the material comprising a thermoset polymer having a plurality of pores formed therein, providing a metal and/or ceramic slurry into an interior of the mold, exposing at least part of the mold to a low pressure environment so that a net flow of gas is produced from the interior of the mold into the low pressure environment. According to some aspects, a method of forming a porous mold is provided. According to some aspects, a photocurable liquid composition is provided, comprising a liquid photopolymer resin, particles of a solid material, in an amount between 30% and 60% by volume of the composition, and a water-soluble liquid.

TECHNIQUES FOR CASTING FROM ADDITIVELY FABRICATED MOLDS AND RELATED SYSTEMS AND METHODS
20210339432 · 2021-11-04 · ·

According to some aspects, a method is provided of casting an object from a mold, the method comprising obtaining a mold comprising a hollow shell of rigid material, the material comprising a thermoset polymer having a plurality of pores formed therein, providing a metal and/or ceramic slurry into an interior of the mold, exposing at least part of the mold to a low pressure environment so that a net flow of gas is produced from the interior of the mold into the low pressure environment. According to some aspects, a method of forming a porous mold is provided. According to some aspects, a photocurable liquid composition is provided, comprising a liquid photopolymer resin, particles of a solid material, in an amount between 30% and 60% by volume of the composition, and a water-soluble liquid.

Method of preparing flexible deformable photonic crystal material for structural health monitoring

Disclosed is a method of preparing a flexible deformable photonic crystal material for structural health monitoring, comprising the following steps: washing a grating master template; preparing and assembling a mold; obtaining an assembled mold by printing a three-dimensional mold comprising an upper die and a lower die by use of a 3D printing device and installing the grating master template on the three-dimensional mold; obtaining a polydimethylsiloxane (PDMS) one-dimensional photonic crystal film by replicating a one-dimensional grating structure of a surface of the grating master template by pouring PDMS into the assembled mold; finally, obtaining the PDMS one-dimensional photonic crystal film with a one-dimensional photonic crystal structure on a middle surface and protrusion structures at both ends by demolding, wherein the PDMS one-dimensional photonic crystal film is the flexible deformable photonic crystal material. A mechanochromic photonic crystal film is prepared by using a master template with a photonic crystal structure, a process is simple and easy to operate, a preparation period of a mechanochromic material is greatly shortened, and a preparation cost is reduced.

Method of preparing flexible deformable photonic crystal material for structural health monitoring

Disclosed is a method of preparing a flexible deformable photonic crystal material for structural health monitoring, comprising the following steps: washing a grating master template; preparing and assembling a mold; obtaining an assembled mold by printing a three-dimensional mold comprising an upper die and a lower die by use of a 3D printing device and installing the grating master template on the three-dimensional mold; obtaining a polydimethylsiloxane (PDMS) one-dimensional photonic crystal film by replicating a one-dimensional grating structure of a surface of the grating master template by pouring PDMS into the assembled mold; finally, obtaining the PDMS one-dimensional photonic crystal film with a one-dimensional photonic crystal structure on a middle surface and protrusion structures at both ends by demolding, wherein the PDMS one-dimensional photonic crystal film is the flexible deformable photonic crystal material. A mechanochromic photonic crystal film is prepared by using a master template with a photonic crystal structure, a process is simple and easy to operate, a preparation period of a mechanochromic material is greatly shortened, and a preparation cost is reduced.

Method for manufacturing transdermal absorption sheet
11160965 · 2021-11-02 · ·

Provided is a method for manufacturing a transdermal absorption sheet which makes it possible to manufacture a transdermal absorption sheet with a stable shape. The method for manufacturing a transdermal absorption sheet includes a step of forming a drug layer (110) on needle-like recess portions (42) of a mold (50) having the needle-like recess portions (42), a step of supplying a polymer layer forming solution (112) to the inside of a step portion (52) of the mold (50), a step of drying the polymer layer forming solution (112) so as to form a polymer layer (114) and a transdermal absorption sheet (120), and a step of peeling off the transdermal absorption sheet (120) from the mold (50). In the step of peeling off, pressing force is applied to a part of the step portion (52) in a second direction (B) opposite to a first direction (A) in which the transdermal absorption sheet (120) is released from the mold (50), and the transdermal absorption sheet (120) is aspirated with a vacuum suction pad (160) from a side opposite to the mold (50) so that the transdermal absorption sheet (120) is peeled off from the mold (50) in the first direction (A).