Abstract:
Apparatus (1) for manufacturing a coated masonry product comprising a body part (9) coated with a coating material (101), the apparatus comprising coating apparatus (2) adapted to apply the coating material (101) as a fluid to a surface of the body part. A scraper part(s) (4, 30) define a scraping edge with a re-entrant profile to engage the coating material to scrape therefrom excess quantities thereof when fluid. Drive apparatus (17, 113) is adapted to impart relative motion between the body part and the scraper part(s) when engaged with the coating material thereby to impose the profile of the scraping edge upon scraped coating material remaining on the body part long the direction of said relative motion.
Abstract:
Systems and methods for adjusting a moisture concentration of veneer are provided. In at least one specific embodiment, the method for adjusting a moisture concentration of a veneer can include estimating a moisture concentration of a veneer surface at one or more locations thereon. The method can also include comparing the one or more estimated locations to a minimum moisture concentration level. The method can also include moisturizing at least a portion of the one or more estimated locations that are below the minimum moisture concentration level to increase the moisture concentration thereof.
Abstract:
Methods are provided for applying a layer to a honeycomb body. The methods include the steps of applying a cement mixture to a cylindrical surface of the honeycomb body and rotating the honeycomb body and a blade relative to one another about a longitudinal axis of the honeycomb body. The methods further include the steps of holding the blade at a first interior angle during a relative rotation of the honeycomb body and the blade about the longitudinal axis. The methods then include the step of moving the blade from the first interior angle to a second interior angle greater than the first interior angle. The methods still further include the step of rotating of the honeycomb body and the blade relative to one another about the longitudinal axis after the blade begins to move from the first interior angle toward the second interior angle.
Abstract:
An automatic machine for applying adhesive to planar tile elements comprises a support carriage, an adhesive-containing tank which carries on the lower side thereof an adhesive-dispensing bar facing the top element of said stacked tile elements, a pressure means acting on the adhesive contained in the tank and actuatable by a first electric motor to cause the adhesive contained in said tank to pour out through said dispensing bar, a storage space of said vertically-stacked tile elements, a means controlled by a second electric motor for lifting the stack of tile elements, an alternate displacement system, on a horizontal plane, of said adhesive-dispensing bar controlled by a third electric motor, and a processing unit to control in a coordinated way said first, second and third electric motor in order to determine the application of the desired amount of adhesive to the surface of the top element of said stacked tile elements.
Abstract:
A liquid coating is formed on a substrate by electrostatically spraying drops of the liquid onto a liquid-wetted conductive transfer surface (14) and transferring a portion of the thus-applied liquid from the transfer surface to the substrate (16). Optionally , one or more nip rolls (26) force the substrate against the transfer surface, thereby decreasing the time required for the drops to spread and coalesce into the coating. Preferably, the coating is passed through an improvement station comprising two or more pick-and-place devices (39) that improve the uniformity of the coating. The coating can be transferred from the conductive transfer surface to a second transfer surface and thence to the substrate. Insulative substrates such as plastic films can be coated without requiring substrate pre-charging or post-coating neutralization. Porous substrates such as woven and nonwoven webs can be coated without substantial penetration of the coating into or through the substrate pores.
Abstract:
A sufficient number of pick-and-place devices (e.g., rolls) (162-167) whose periods of contact with a substrate are equal or substantially equal to one another are used to form continuous void-free uniform coatings despite the occurrence of unintended or intended coating caliper surges, depressions or voids. The wetted surfaces of the devices contact and re-contact the coating at positions on the substrate that are different from one another. Extremely uniform and extremely thin coatings can be obtained at very high rates of speed. The pick-and-place devices also facilitate drying and reduce the sensitivity of drying ovens to coating caliper surges. Equipment containing the pick-and-place devices is simple to construct, set up and operate, and can easily be adjusted to alter coating thickness and compensate for coating caliper.
Abstract:
The process relates to the production of a product consisting of a base (20) to which an adhesive (2-10) with long-term effect and a protective band (15) are attached and which allows use of the adhesive (2-10) to be deferred. The process is characterised by the use of a base (20), to one surface of which (22) the adhesive (2-10) is attached, said surface presenting irregularities. The adhesive (20) is heated to a temperature at which it becomes paste-like and almost liquid, and brought to at least one opening (4) situated above a plane surface (5) on which the base (20) has been placed. Said adhesive is then caused to flow at the same time that a relative movement between the base (20) and the opening (4) occurs. This results in the adhesive being deposited on the base (20) along at least one thick cord (10) notably one that is continuous. The temperature of the adhesive (2) is then lowered in order to increase its viscosity until it becomes paste-like to the point of turning solid. Pressure is applied to the paste-like adhesive (2-10) in order to cause lateral stretching and rolling of the cord (10) along its full length. Finally, at least one subsequent cutting of the product, which consists of a base (20), an adhesive strip (10) and a protection band (15), takes place.