The present invention generally relates to a carding machine for preparing a continuous non-woven fibrous web, and especially to such a machine comprising a plurality of product outlets commenced along the process succession previous to the final carding cylinder.
Industrial carding machinery produce non-woven web forms mixtures of fibers such as polypropylene, polyethylene, cotton, viscose or regenerated fiber, A typical carding machine is having one or more main carding cylinders, and various other rolls that are arranged in juxtaposition and rotate wherein their axes horizontal. Fibers are traditionally fed and transferred to the first carding cylinder and carded by means of a plurality of sets of worker and striper rolls, which provide for a web of opened fibers of mainly longitudinal orientation. The carding succession continues wherein the fibers are processed by means of randomizing cylinders and doffer rolls that process the web until has a network characterization. Along the second or more carding cylinders along carding succession, the web is further processed to a predetermined measure. The finished carded web is then transferred to a set of complement rolls or air suction to a product conveyer belt.
It is known in the art that short fibers are discharge to waste by various suction chambers located adjacent to the main cylinder rolls and/or the doffer or other cylinders along the carding process. Hence, U.S. Pat. No, 6,568,037 to Leder and U.S. Pat. No, 5,095,584 to Temburg disclose few apparatuses for separating waste and short fibers from the carding process, Moreover, few inventions, such as U.S. Pat No. 5,226,214 to Napolitano have presented a carding process characterized by a multiple doffing outlets, usually in a parallel configuration, located at the very last step of the process, after the last main carding cylinder. This invention is also teaching two or more combing cylinder adapted to convey the half finished web to the second cylinder.
It is well acknowledge in the art that the carded web being processed along the carding cylinder is comprised of half-finished fiber web and a relatively minor portion of fully opened carded fibers. Said finished fibers are being re-cycled in this costly carding process and hence severely decrease homogeny and process productivity. Hence, a carding machine adapted for maintaining low fiber density on the main finisher cylinder while increasing production rate of the machine through the discharge of a certain amount of fully opened (-carded.) fibers from the breaker or first cylinder and thus increase in productivity and reduce the carding cost is still a long felt need.
In order to understand the invention and to see how it may be implemented in Practice. A plurality of embodiments will now be described, by way of non-limiting example only. With reference to the accompanying drawing, in which
It is one object of the present invention to present a useful carding machine for preparing a continuous non-woven fibrous web. This novel machine is comprised (I) a succession of carding cylinders including a first carding cylinder and subsequently a final carding cylinder; said cylinders are in communication with one or more carding—rolls; doffers and/or randomizing rolls arranged in juxtaposition and rotate wherein their axes horizontal; (II) at least one Feeding inlet unit in communication with said first carding cylinder; and (III) at least one product outlet in communication with said last carding cylinder; wherein one or more product outlets commenced form said carding succession, previous to said final carding cylinder.
It is a further object of the present invention to present a cost effective method for maintaining fiber density on the carding cylinder while increasing production rate of the machine through the discharge of a certain amount of fully opened fibers from the cylinder previous to the final main cylinder. This method is essentially comprised of the step of collecting a predetermined measure of said carded fibers by means of one or more product outlets located before said final carding cylinder.
The following description is provided, alongside all chapters of the present invention, so as to enable any person skilled in the art to make use of said invention and sets forth the best modes contemplated by the inventor of carrying out this invention. Various modifications, however, will remain apparent to those skilled in the art since the generic principles of the present invention have been defined specifically to provide a novel carding machine adapted for preparing a continuous non-woven fibrous web or other fiber forms comprising a plurality of fiber product outlets commenced along the process succession previous to the last carding cylinder.
The present invention generally relates to a carding machine suitable for preparing a continuous non-woven fibrous web. This machine is comprised of a succession of carding cylinders including a first carding cylinder and subsequently a final carding cylinder; said cylinders are in communication with one or more carding type—rolls doffers and/or randomizing rolls arranged in juxtaposition and rotate wherein their axes horizontal; at least one feeding inlet unit in communication with said first carding cylinder; and at least one product outlet in communication with said last carding cylinder; wherein one or more such product outlets commenced form said succession, previous to said last main carding cylinder.
More specifically, the present invention relates to a carding machine wherein the at least one of the product outlet is commenced from at least, one doffer cylinder juxtaposed to the any pre-carding cylinder and ahead of the main cylinder. Additionally or alternatively, the at least one of the product outlet is commenced form at least one randomizing cylinder juxtaposed to the first carding cylinder. Additionally or alternatively, the at least one of the product outlet is a succession commenced with at least one randomizing cylinder juxtaposed to the first carding cylinder, and continuous with at least one doffer.
Reference is made now to
It is acknowledged in this respect that said second downstream carding may comprise (a) at least one of the following sequences: (a) a main carding cylinder, one or more doffer rolls, a plurality of complement rolls and a conveyer belt; (b) a main carding cylinder, one or more randomizing rolls, a plurality of complement rolls and a conveyer belt; (c) a main carding cylinder, two or more randomizing rolls, a doffer roll in communication with said two or more randomizing rolls, a plurality of complement rolls and a conveyer belt; (d) a main carding cylinder, at least one randomizing roll, two or more doffer cylinders in communication with said randomizing cylinder, a plurality of complement rolls and a conveyer belt or any combination thereof.
It is further acknowledged in this respect that the aforementioned carding systems are comprised according to another set of embodiments of the present invention effective means for assisting with air doffers and perforated suction belts. Reference is hence made now to
Reference is made now to
Reference is made now to