摘要:
The invention relates to a method for producing a foil material, whereby a plastic film (12) is provided with an enamel layer of variable viscosity and a relief structure is subsequently impressed upon the enamel layer. The viscosity of the enamel layer is adjusted to a predetermined value at least while the enamel layer is deposited and during the embossing process. Said viscosity is kept constant during each respective operation. The invention also relates to a device for carrying out the inventive method.
摘要:
Plant for obtaining sheets with optical effects, said sheets (2) receiving the impression of various patterns and/or illustrations (a, b, c, d and e) and receiving a layer of transparent resin (1); the engraving of the resin, by contact and polymerisation, produces the optical effects. In the plant, the application of the resin (1) to the sheet (2) is effected by rotogravure, rotary serigraphy, flexography, offset or other means, directly to the engraving cylinder (4, 4', 4'' or 4''') or on the sheet (2); ultra violet rays (18) are used as polymerising element, optatively with filter (19) for infrared rays, or an electron generator; the engraving and polymerization of the resin (1) are done at the same time and with the use of an engraver cylinder (4, 4', 4'' or 4''') without any seam. The printing means, the engraving means and the polymerization means form a compact assembly (20) arranged in line on a rotary machine (21).
摘要:
The invention relates to a method for producing fastener parts comprising a plurality of hook elements (24). According to said method a formulation containing radiation cross-linkable prepolymers is shaped, cast and/or compression-moulded such that a plurality of hook elements (24) on a fastener base (21) is formed and then radiation cured. The invention also relates to a device for producing such fasteners, which comprises feed means (32, 10) for supplying the formulation (14) containing radiation cross-linkable, notably acrylated, prepolymers, at least one shaping roll (11) and a backing roll (12). The shaping roll (11) comprises a plurality of radial cavities (17). A source of ultraviolet (19) or electron radiation for radiation curing the shaped radiation cross-linkable formulation is also provided for.
摘要:
The invention relates to a method for producing a surface-structured, film-like semifinished product made of a thermoplastic which is applied onto a prepared surface (5) with numerous fine cavities provided in the form of pocket borings and is correspondingly shaped. The solidified plastic material is removed from the surface as a structured film, whereby the thermoplastic material which is inserted into the cavities and removed from the same forms a pile comprised of projections and neps. The projections which form the pile are stretched by combing, brushing, using a squeegee, and/or by squeezing by shearing in order to form naps.
摘要:
A process and an apparatus for making a papermaking belt (90) are provided, the belt comprising a reinforcing structure (40) and a resinous framework (50) joined together. The preferred continuous process comprises the steps of depositing a flowable resinous material onto a patterned molding surface (20); continuously moving the molding surface and the reinforcing structure at a transport velocity such that at least a portion of the reinforcing structure is in a face-to-face relationship with a portion of the molding surface; applying a fluid pressure differential to transfer the flowable resinous material from the molding surface onto the reinforcing structure and causing the flowable resinous material and the reinforcing structure to join together; and solidifying the resinous material thereby forming the resinous framework joined to the reinforcing structure. The apparatus comprises a molding member having a patterned molding surface preferably comprising a plurality of molding pockets to carry a flowable resinous material therein; a means for depositing the flowable resinous material into the molding pockets of the molding surface; a means for moving the reinforcing structure and the molding member in a predetermined direction; and a means for creating a fluid pressure differential sufficient to transfer the flowable resinous material from the molding member to the reinforcing structure.
摘要:
A process and an apparatus for making a papermaking belt are provided, the belt comprising a reinforcing structure (40) and a resinous framework (50A) joined together. The preferred continuous process comprises the steps of depositing a flowable resinous material (50) onto a patterned molding surface (21); continuously moving the molding surface and the reinforcing structure at a transport velocity such that at least a portion of the reinforcing structure is in a face-to-face relationship with a portion of the molding surface; transferring the flowable resinous material from the molding surface onto the reinforcing structure; causing the flowable resinous material and the reinforcing structure to join together; and solidifying the resinous material thereby forming the resinous framework joined to the reinforcing structure. The apparatus comprises a molding member having a patterned molding surface comprising a plurality of molding pockets to carry a flowable resinous material therein; a means for depositing the flowable resinous material into the molding pockets of the molding surface; a means for moving the reinforcing structure in a predetermined direction; a means for moving the molding member in a predetermined direction such that the flowable resinous material is transferred from the molding pockets onto the reinforcing structure.
摘要:
A flexible composite with integral flights is provided and methods for making the same. The composite is made from, for example, silicone rubber, urethane rubber, polytetrafluoroethylene or other polymer. The composites are useful for making articles of manufacture, in particular, conveyor belts for use in high temperature food processing. The conveyor belts are an improvement over the prior art in that they inhibit slippage of the articles conveyed, may be manufactured at low cost and are easy to clean.
摘要:
An aromatic polycarbonate film having excellent transparency and surface smoothness as well as good lubricity useful for optical use through solving the problems of defects such as scratches, wrinkles or abrasions in the production processes and processing processes of the aromatic polycarbonate film for optical use, by specified quality about the concavo-convex forms on both the surfaces of the aromatic polycarbonate film, and by employing specific drying conditions in the drying processes after casting from a solution in a solution-casting film-making method of an aromatic polycarbonate solution.
摘要:
A process for producing an article having a finely uneven surface coated with a film, which has high heat resistance and which neither cracks nor peels off from a substrate, by forming a film of a sol material between a substrate and a mold in such a manner that the film is in close contact with them and applying heat to form a gelled film, which has a surface configuration that is the inversion of the surface configuration of the mold, on the surface of the substrate, wherein the sol material contains (A) R 2 SiX 2 (R is an alkyl group and X is an alkoxyl group or halogen atom) and (B) R'SiX' 3 (R' is an aryl group or substituted aryl group and X' is an alkoxyl group or halogen atom).
摘要:
A method of texturing fluoropolymer film and the textured product produced, which product retains the texture imparted after further processing, such as in thermoforming or molding processes.