A method of making an object on a bottom-up stereolithography apparatus is provided. The apparatus includes a light source, a drive assembly, and a controller operatively associated with the light source and the drive assembly, with the light source and/or the drive assembly having at least one adjustable parameter that is adjustable by the controller. The method includes installing a removable window cassette on the apparatus in a configuration through which the light source projects, the window cassette comprising an optically transparent member having a build surface on which an object can be produced, and with the optically transparent member having and at least one variable property therein; and then modifying the at least one adjustable parameter by the controller based on the at least one variable optical property of the window; and then producing the object on the build surface from a light-polymerizable liquid by bottom-up stereolithography.

A co-injected molded multi-layer article has inner and outer layers, an interior layer contained within the inner and outer layers and a surface portion to which a closure or other component may be heat-sealed. The article is molded by co-injecting the inner, outer and interior layer materials into a mold cavity of a mold. The interior layer material is caused to flow along a steam line offset from the zero velocity gradient of the combined material flow and biased toward a material flow for forming an outer wall of the multi-layer article. The resultant molded multi-layer article contains an interior layer located in a heat sealable region that avoids a breach or failure during a heat seal operation to seal an opening of the molded article.

An object of the present invention is to provide a laminated member for decoration that can be molded into a complicated shape and has a superior hardcoating property. The present invention relates to a laminated member for decoration having a protective film, a coating layer and a resin substrate, wherein the surface roughness Rz(a) of the adhesive layer of the protective film on the side where the coating layer is located and the surface roughness Rz(b) of the coating layer of an unheated sample formed by peeling the protective layer, the surface roughness being taken on the side opposite from the resin substrate, define Rz(b)/Rz(a)100 having a prescribed relationship; the surface roughness Rz(b) and the surface roughness Rz(bh) of the coating layer of a heated sample prepared by heating the unheated sample under a prescribed condition, the surface roughness being taken on the side opposite from the resin substrate, satisfy at least one of Formulas (2) and (3) below:
0%Rz(bh)/Rz(b)100<30%(2), and
0Rz(bh)Rz(b)<0.5 m(3);
and the unreacted (meth)acryloyl groups of the coating layer of the heated sample irradiated with a prescribed amount of active energy rays have disappeared 10 to 100% as compared with the coating layer of the unheated sample.

This disclosure provides a fluorine-containing mixture and a fluorine-containing super-oleophobic microporous membrane using the fluorine-containing mixture as a raw material, as well as preparation methods and applications for the fluorine-containing mixture and the fluorine-containing super-oleophobic microporous membrane. The fluorine-containing mixture of the present disclosure comprises, by weight percentage, the following components: Component A: 50%90%; Component B: 3%25%; Component C: 0%35%; Component D: 0%3%; wherein Component A comprises high molecular weight polytetrafluoroethylene homopolymer or copolymer dispersion resin; Component B comprises one or more fluorine-containing alkyl acrylate monomers; Component C comprises one or more fluorine-free acrylates; Component D comprises high temperature free radical initiator. There's no need to add inflammable or explosive lubricating oil, making the process highly safe; and the obtained fluorine-containing super-oleophobic microporous membrane has high waterproof, air-permeable, oil-resistant and washable performance, in line with the needs of a new generation of waterproof and air-permeable protective clothing.

A laminated film includes a first polyolefin-based resin layer including a first polyolefin-based resin having a melting point of from 95 C. to 200 C., a second polyolefin-based resin layer including a second polyolefin-based resin having a melting point of less than 95 C., and a third polyolefin-based resin layer including a third polyolefin-based resin having a melting point of from 95 C. to 200 C., which are disposed in this order. The laminated film has an oxygen permeability of from 7,500 mL/m.sup.2.Math.day.Math.atm to 85,000 mL/m.sup.2.Math.day.Math.atm.

A gas-permeable porous fluororesin membrane (4) made of a fluororesin is welded to a resin component (2) made of a thermoplastic resin using a welding horn (62) having a working surface (62p) adapted to be brought into contact with a work object and provided with a projection (62t). The working surface (62p) of the welding horn (62) is provided with, for example, a plurality of projections (62t). The plurality of projections (62t) may be arranged in a grid pattern on the working surface (62p).

A porous membrane comprising PTFE blended with PFSA is disclosed.

Provided is a process for thermoforming a gas and liquid permeable layer (10) of thermoplastic material having an average thickness of less than 1.0 mm, the process comprising the steps of bringing the layer of thermoplastic material, at a temperature below that required for thermoforming, into contact with a mould (16) at a temperature above that of a thermoforming temperature of the thermoplastic material; pressing the mould into contact with the layer of thermoplastic material, the contact between mould and thermoplastic material causing heat to transfer from the mould to the thermoplastic material and raising the temperature of the thermoplastic material to a thermoformable temperature; such pressing thereby causing thermoforming of the thermoplastic material to conform to the shape of the mould.

The present invention provides a preparation method for microporous film, wherein the method uses dry stretch film technology. In addition, no grease is added to a polymer material for subsequent removal to create pores, nor is there any pore-forming microparticles added that promote the formation of micropores. The methodology steps include: a) a nonporous precursor extrusion process; b) an annealing and aging process; c) a longitudinal stretching with or without transverse relaxation process3; d) a transverse stretching without longitudinal relaxation process; e) a transverse relaxation process; and f) a winding process.

The invention relates to biodegradable polymer packaging films composed of a blend of different biodegradable polymers. These films provide a sustainable alternative to conventional plastic films, offering similar mechanical strength and enhanced biodegradability. The invention outlines the composition, manufacturing process, properties, and applications of the biodegradable films, which decompose under natural environmental conditions, reducing environmental pollution and contributing to a more sustainable packaging solution.