An optically anisotropic polymer thin film includes a crystallizable polymer and an additive configured to interact with the polymer (e.g., via π-π interactions) to facilitate chain alignment and, in some examples, create a higher crystalline content within the polymer thin film. The polymer thin film may be characterized by a bimodal molecular weight distribution where the molecular weight of the additive may be less than approximately 50% of the molecular weight of the crystallizable polymer. Example crystallizable polymers include polyethylene naphthalate, polyethylene terephthalate, polybutylene naphthalate, polybutylene terephthalate, as well as derivatives thereof. Example additives, which may occupy up to approximately 10 wt. % of the polymer thin film, include aromatic ester oligomers, aromatic amide oligomers, and polycyclic aromatic hydrocarbons, for example. The optically anisotropic polymer thin film may be characterized by a refractive index greater than approximately 1.7 and an in-plane birefringence greater than approximately 0.2.

A prepreg includes composition elements [A], [B], and [C] described below,

[A] a reinforcing fiber,

[B] a thermosetting resin, and

[C] a thermoplastic resin.

[B] contains a thermoplastic resin having an aromatic ring with an amount of 10% or more by mass, a resin region containing [B] is present on one surface of the prepreg, a resin region containing [C] is present on another surface of the prepreg, and [A] that crosses over a boundary surface between the resin region containing [B] and the resin region containing [C] and that is in contact with both resin regions is present.

There is provided a co-injection molded multilayer structure comprising a barrier layer and outer layers laminated to contact with the barrier layer on its both sides, wherein the barrier layer is made of a resin composition (X) comprising an ethylene-vinyl alcohol copolymer (A) and an alkali metal salt (B) of a higher fatty acid, having a melting point of 250° C. or lower; the ethylene-vinyl alcohol copolymer (A) has an ethylene unit content of 20 to 60 mol % and a saponification degree of 90% or more, and a content of the alkali metal salt (B) in the barrier layer is 50 to 1500 ppm in terms of metal atoms; and the outer layers are made of a resin composition (Y) comprising an unmodified high-density polyethylene (F) and a maleic anhydride-modified polyethylene (G), and a maleic anhydride modification rate relative to the whole resin composition (Y) is 0.005 to 0.1 wt %. This co-injection molded multilayer structure has excellent adhesiveness, so that its oxygen barrier performance can be maintained even after being subjected to an impact due to falling or the like.

Described is a coextrusion head (1) comprising a plurality of infeeds (11, 12, 13, 14, 15) for fluid products, an inner joining space (16, 17), positioned downstream of said infeeds and communicating with them by means of respective delivery ducts (110, 120, 130, 140, 150) so as to allow flows of products to converge there and an outfeed (18) for the final multi-layer product, positioned downstream of the inner joining space (16, 17). In the head (1) there is a central delivery duct (110), provided for receiving a first flow of product and two lateral delivery ducts (120, 130), designed to receive, respectively, a second flow of product and a third flow of product. The head (1) also comprises adjustable narrowing means (31, 32), acting at least in the central delivery duct (110) and designed to vary a respective opening, to allow adjustment of the relative position of the first flow relative to a composite secondary flow defined by the joining of the first, second and third flow in the joining space (16) .

A fiber-reinforced resin composite sheet of the present invention contains: a polyamide resin film containing a dicarboxylic acid component (a) and a diamine component (b); and a plurality of reinforcing fibers laminated in a state of being oriented in the same direction on the polyamide resin film, the reinforcing fibers being obtained by opening a reinforcing fiber bundle. The dicarboxylic acid component (a) contains 60 mol % or more and 100 mol % or less of terephthalic acid. The diamine component (b) contains 60 mol % or more and 100 mol % or less of 1,9-nonanediamine and 2-methyl-1,8 octanediamine. The fiber-reinforced resin composite sheet has a volume content rate Vf of the reinforcing fibers of 20% or more and 70% or less and a thickness of 20 μm or more and 70 μm or less.

The present invention provides a laminated sheet for manufacturing a packaging container. The laminated sheet comprises a pair of plastic sheets, a barrier sheet, a barrier region, an easily peelable region, and a fixing region. The barrier sheet has flexibility and is disposed between the pair of plastic sheets. The barrier region is formed by overlapping the pair of plastic sheets and the barrier sheet with each other. The easily peelable region is provided in the barrier region. The fixing region is located in a circumference of the easily peelable region, in which the pair of plastic sheets are fixed to each other directly and/or via the barrier sheet. A peel strength between the pair of plastic sheets and the barrier sheet in the easily peelable region is smaller than a direct peel strength between the pair of plastic sheets and/or a peel strength between the pair of plastic sheets via the barrier sheet in the fixing region. This improves recyclability of a packaging container having gas barrier property.

To provide a polyester recycling system including: a functional layer removing means of removing a functional layer from a laminated polyester film including a polyester film having on a surface thereof the functional layer as a recovered waste material, with a cleaning agent dissolving the polyester film; a recovery means of recovering the polyester film, from which the functional layer has been removed; and a production means of producing a recycled polyester product with the recovered polyester film as a raw material.

Elastomeric articles, such as gloves, made from more than one layer, are provided. The gloves can include a first (grip side) layer in which a first colorant is compounded or integrated and a second (donning side) layer in which a second colorant is compounded or integrated. Alternatively, the gloves can include a translucent first layer and a second layer in which a colorant is compounded or integrated. Either arrangement can enable a breach of the first layer to be more easily detected, either due to the high level of contrast between the first layer and the second when a first colorant and a second colorant are utilized, or due to the translucence of the first layer as compared to the donning side layer, where the intensity of the second layer is increased upon a breach of the translucent first layer.

The present disclosure pertains to an improved method and apparatus for compacting a powder layer. An exemplary method comprises placing the substrate on a first plate, placing a second plate over the powder layer so that the substrate and the powder layer are sandwiched between the first plate and the second plate to form a multilayered structure comprising the first plate, the substrate, the powder layer and the second plate, and calendering the multilayered structure between a top calendering roller and a bottom calendering roller.

A metal/resin composite structure includes: a metal member (M) having a fine uneven surface; and a polyamide-based resin member (A) bonded to the metal member (M), and the polyamide-based resin member (A) satisfies the following condition [A1] and condition [A2]: [A1] a glass transition temperature (Tg) observed by a differential scanning calorimeter (DSC) is equal to or higher than 85° C. and equal to or lower than 140° C.; and [A2] a crystallization temperature (Tc) observed by a differential scanning calorimeter (DSC) is equal to or higher than 250° C. and equal to or lower than 292° C.