摘要:
A method for preparation of a mold (10) intended to form a slab from a mixture of agglomerate comprising the steps of depositing over the mold surfaces a sheet (15) of PVA-based plastic material so as to form with it a surface for subsequent contact with the mixture introduced into the mold for forming the slab, whereby in at least some areas a layer (14) of a fluid agent containing PVA in a solution is interposed between the sheet (15) and the mold surfaces. A plant for carrying out the method and a method for production of a slab are also described.
摘要:
Disclosed are biaxially oriented, multilayered films, wherein said films may include a core layer comprising linear, low-density polyethylene, and the core layer is optionally cavitated. Said films may further include a first skin layer on a first side of the core layer, and a second skin layer on a second side of the core layer, wherein the first skin layer and the second skin layer comprise thin layers of linear, low-density polyethylene of a same or different type. Further, said films may include an aqueous-based primer on an outer surface of the second skin layer, wherein the outer surface faces away from the core layer. Further still, said films may include a sealant coating layer on the first skin layer and a barrier coating layer on the second skin layer, wherein the sealant coating layer and the barrier coating layer are aqueous-based.
摘要:
The present invention relates to an optical film including a polarizing film, and a manufacturing method therefor. The optical film of the present invention can include the polarizing film having an orthogonal transmittance of less than 0.5% in a wavelength of a range of 405-735 nm.
摘要:
The present invention relates to a process for the formation of a structured film, a structured film as such, an article comprising the structured film, a device for the continuous formation of such a structured film and a composite comprising the structured film.
摘要:
The instant invention provides a linear low density polyethylene composition suitable for cast film, films made therefrom, and packaging devices comprising one or more such film layers. The linear low density polyethylene composition suitable for cast film according to the present invention comprises an ethylene/α-olefin interpolymer composition having a Comonomer Distribution Constant (CDC) in the range of from 40 to 200, for example from 40 to 150, a vinyl unsaturation of less than 0.12 vinyls per one thousand carbon atoms present in the backbone of the ethylene-based polymer composition; a zero shear viscosity ratio (ZSVR) in the range from 1.2 to 5, for example from 1.5 to 4; a density in the range of from 0.910 to 0.935, for example from 0.915 to 0.925, g/cm3, a melt index (I2) in a range of from 1 to 10, for example from 2 to 6 g/10 minutes, a molecular weight distribution (Mw/Mn) in the range of from 2 to 3.5.
摘要:
The invention relates to thermoforming plant and their transport chains. Various aspects of the chain and chain rails are proposed. Overall the chain operates such that less wear occurs; it can also be cooled symmetrically and the film can be better heated up to the edges.
摘要:
Poly(ethylene tetrafluoroethylene) (ETFE) polymers having an average molecular weight of at least 300,000 g/mol and a melt enthalpy of at least 57 J/g are provided. The ETFE polymer may include at least one additional comonomer. The ETFE polymer is used to form a porous tape or membrane that has a node and fibril structure. A porous ETFE tape may be formed by lubricating the ETFE polymer and subjecting the lubricated polymer to pressure at a temperature below the melting point of the ETFE polymer. Optionally, the ETFE tape may be expanded at a temperature below the melting temperature of the ETFE polymer to form an expanded ETFE membrane. Alternatively, the ETFE polymer may subjected to heat and pressure without the addition of a lubricant to form a dense preform. The dense preform may be subsequently slit in a length direction and stretched to form a dense ETFE fiber.
摘要:
A method for manufacturing an absorbent article, the method including: while a lower bandlike member is transported in a transport direction, a process in which a cutting position is determined and an adhesion area is formed on each side of the cutting position of the lower bandlike member in the transport direction; a process in which leg elastic members are placed so that a part of each of the leg elastic members overlaps the adhesion area, the leg elastic members being stretched in a direction having a component parallel to the transport direction; a process in which an upper bandlike member is stacked on and adheres to the lower bandlike member and the leg elastic member on the adhesion area; a process in which the lower bandlike member and the upper bandlike member are folded on the center in the intersecting direction; a process in which a welded section on which the lower bandlike member and the upper bandlike member are to be welded to each other is formed on each side of the cutting position in the transport direction; a process in which and the lower bandlike member, the upper bandlike member and the leg elastic members are cut together on the cutting position, a lower exterior member and an upper exterior member which are shaped in the form of underpants are cut and separated, the leg elastic members which are stretched contract towards the adhesion area from positions at which the leg elastic members are cut, the contraction being performed while the leg elastic members shifting relative to the lower exterior member and the upper exterior member.
摘要:
Provided is a laminate comprising a thermoplastic resin substrate and a polyvinyl alcohol based resin layer formed on the thermoplastic resin substrate, being used to form a polarizing film of the polyvinyl alcohol based resin layer treated with a post-process comprising at least a dyeing step of dyeing the polyvinyl alcohol based resin layer with a dichroic material, the post-process being performed after the polyvinyl alcohol based resin layer formed on the thermoplastic resin substrate is stretched together with the thermoplastic resin substrate, wherein the polyvinyl alcohol based resin layer comprises a polyvinyl alcohol based resin and a halide.
摘要:
Thin PTFE layers are described having little or no node and fibril microstructure and methods of manufacturing PTFE layers are disclosed that allow for controllable permeability and porosity of the layers. In some embodiments, the PTFE layers may act as a barrier layer in an endovascular graft or other medical device.