摘要:
The present invention provides a production method for a microporous polyolefin resin sheet which enables the stable formation of a sheet having uniform crystallinity, even when the speed of the casting cooling device is high, and has excellent thickness uniformity and appearance grade. The production device for a microporous polyolefin resin sheet according to the present invention includes a mouthpiece that extrudes a molten resin in a sheet shape; a casting cooling device that cools and solidifies a sheet extruded from the mouthpiece while conveying the sheet; and a decompression chamber that is installed upstream from the mouthpiece in a conveying direction of the casting cooling device and aspirates air between the sheet extruded from the mouthpiece and the casting cooling device; and further includes a rectifier that is installed and blocks a gap between the sheet discharged from the mouthpiece and the cast surface. The decompression chamber of the production device for a microporous polyolefin resin sheet according to the present invention includes: a sealing member provided in at least a peripheral portion of a surface opposing the casting cooling device and in physical contact with the casting cooling device; and a partition plate provided across a sheet width direction in a vicinity of an opening part opposing the mouthpiece.
摘要:
Bei einem Verfahren und einer Vorrichtung zur Erzeugung und Übertragung diffraktiver Mikrostrukturen auf einen Bedruckstoff (2) ist es vorgesehen, dass ein Fluid auf einen Prägezylinder (14) aufgebracht wird und dort während der Rotation des Prägezylinders so weit verfestigt wird, dass dieser filmartig mit verfestigter Mikrostruktur auf einen Bedruckstoff übertragen wird, wobei der Prägezylinder einen Aufzug (18, 19) aufweist, der vorzugsweise entweder weich als Flexoshim oder hart als Nickelshim ausgebildet ist.
摘要:
A method of making an auxetic mesh, which method includes: (a) extruding a polymeric material (60) onto an open casting surface (58) that has an intended pattern (62) disposed therein, the pattern (62) being configured to create an auxetic mesh ((20); (b) wiping off excess extruded polymeric material (60) from the open casting surface (64); (c) removing the cast mesh (20) from the open casting surface (64) after the excess polymeric material (60) has been wiped off; and (d) removing any residual polymeric material that is not of the intended mesh pattern (20). The method allows for the continuous production of auxetic meshes.
摘要:
Preparation of cellulose acylate film comprises co-casting cellulose acylate solution to form two or more layers of extending film, wherein the associate molecular weight of the outer layer by static light scattering is lower than that of the inner layer.
摘要:
A method of film fabrication is taught that uses a coating and drying apparatus to fabricate resin films suitable for optical applications. In particular, acrylic films are prepared by simultaneous application of multiple liquid layers to a moving carrier substrate. After solvent removal, the acrylic films are peeled from the sacrificial carrier substrate. Acrylic films prepared by the current invention exhibit good clarity and low birefringence.
摘要:
A method of film fabrication is taught that uses a coating and drying apparatus to fabricate resin films suitable for optical applications. In particular, cellulose acetate films are prepared by simultaneous application of multiple liquid layers to a moving carrier substrate. After solvent removal, the cellulose acetate films are peeled from the sacrificial carrier substrate. Cellulose acetate films prepared by the current invention exhibit good dimensional stability and low birefringence.
摘要:
Bei einem Verfahren zur Herstellung eines auf einer Seite mit Noppen, Spikes oder dergleichen versehenen Formierbands zur Verwendung im Formierbereich einer Maschine zur Herstellung einer Faserstoffbahn wie insbesondere einer Papier-, Karton-, Tissue- und/oder Vliesbahn werden im Gießverfahren eine Polymermatrix erzeugt und vorgefertigte Noppen bzw. Spikes während des Gießvorgangs in das noch nicht erstarrte Matrixmaterial eingebracht.
摘要:
Biaxially oriented cellulosic film is produced by stretching in sequence in one direction and then the other a web (20) of a solution of cellulosic material which is cast onto an extensible surface (3) to which the web adheres, and the film is stretched in at least one direction by stretching the extensible surface.
摘要:
A continuous process for producing printed patterns on retroreflective material is disclosed, wherein a partially cured pattern (20') is printed on a roll of film (46) and partially cured cube-corner prisms (64) are bonded to the film over the printed matter thereby encapsulating the printed matter to protect the printed matter from the environment.
摘要:
Compositions and methods for producing colored replicas are described. A method includes: combining a polymerizable varnish and a dye to form a composition, wherein the dye is substantially dissolved in the composition; and replicating a surface topography with the composition. The compositions and methods provide advantages in that surface topography is replicated in a color tinted polymer matrix with enhanced overall cost effectiveness.