277results about "Felting apparatus" patented technology

This invention relates to nonwoven fabrics with advantageous characteristics and the method to produce these fabrics. Advantageously, the fabrics of the subject invention have increased thickness (loft) compared to conventional nonwoven fabrics and have high air permeability and open space while maintaining softness and strength at the same basis weight.

First continuous web as a component of disposable wearing article to be continuously manufactured is fed in a machine direction and first continuous elastic members are fed via guide means adapted to oscillate the elastic members in a cross direction crossing the machine direction and attached thereto. Each of the guide means comprises a first servomotor having a rotary shaft adapted to repeat reversal of its rotational direction, a first arm connected directly with the rotary shaft and extending in a direction crossing the rotary shaft so that the first arm swings around the rotary shaft as the rotary shaft rotates and a first feed member adapted to direct the first continuous elastic members toward guide means formed on the first arm.

Known methods involve applying a layer of particularly highly absorbent fibers such as woodpulp on a carrier nonwoven and then compacting the composite nonwoven with the aid of water entanglement. One disadvantage of the compacting method is the high woodpulp fiber loss and the associated purification of the circulating water for the entanglement device. According to the invention, a fine layer of microfibers is initially applied before applying the woodpulp fibers. The microfibers are evenly distributed on the carrier nonwoven using, for instance, a meltblown process and the woodpulp fibers are only then applied in the separating layer. The water during entanglement can no longer merge the woodpulp fibers into the carrier nonwoven due to the fact that the microfibers act as a barrier.

A composite fabric comprising a necked and creped spunbond nonwoven web of monocomponent fibers hydraulically entangled with a fibrous component that comprises cellulosic fibers. The nonwoven web contains thermoplastic fibers and the fibrous component comprises greater than about 50% by weight of the fabric.

An entangled fabric that contains a nonwoven web hydraulically entangled with a fibrous component is provided. The nonwoven web is formed from staple fibers and is creped. For example, in one embodiment, the nonwoven web is a creped, point bonded, carded web. Excellent liquid handling properties can be achieved in accordance with the present invention without resulting in the poor liquid handling capabilities often associated with point bonded nonwoven webs. In fact, the entangled fabric of the present invention can have improved bulk, softness, and capillary tension.

A leather-like sheet composed of a microfine-fiber entangled body made of bundles of microfine fibers and an elastic polymer impregnated therein. The bundles of microfine fibers are composed of microfine monofibers having an average cross-sectional area of 0.1 to 30 μm² and have an average cross-sectional area of 40 to 400 μm². The bundles of microfine fibers exist in a density of 600 to 4000/mm² on a cross section taken along the thickness direction of the microfine-fiber entangled body. The elastic polymer contains 30 to 100% by mass of a polymer of ethylenically unsaturated monomer. The polymer of ethylenically unsaturated monomer is composed of a soft component having a glass transition temperature (Tg) of less than −5° C., a crosslinkable component, and optionally a hard component having a glass transition temperature (Tg) of higher than 50° C. and another component. The polymer of ethylenically unsaturated monomer is bonded to the microfine fibers in the bundles of microfine fibers. The leather-like sheet has a flexibility and hand such as dense feeling each resembling natural leathers and a high quality appearance. The leather-like sheet is highly stable in quality such as fastness and surface abrasion resistance and excellent in practical performance.

The invention discloses an automatic molding machine for an automobile interior part felt and belongs to molding machinery of automobile interior parts. The automatic molding machine comprises a frame base, a rail assembly, three lower molds, a group of lower mold station moving mechanisms, a group of lower mold station reversing mechanisms, a pair of pressing upper molds, a feed supplementing mechanism and a net laying mechanism. The rail assembly consists of a group of longitudinal guide rails and a group of transverse guide rails, and is arranged on the frame base, and the longitudinal guide rails and the transverse guide rails are vertically staggered to form a feed complementing station, a pre-pressing station, a net laying station and a molding station. The three lower molds which are provided with a lower mold base are arranged on the rail assembly. The group of lower mold station moving mechanisms are arranged on the frame base. The group of lower mold station reversing mechanisms are arranged on the frame base and matched with the intersection formed by vertically intersecting the transverse guide rails and longitudinal guide rails. The pair of pressing upper molds which is provided with the upper mold base is arranged on the frame base, wherein one pressing upper mold corresponds to the upper part of the pre-pressing station, and the other pressing upper mold corresponds to the upper part of the molding station. The feed complementing mechanism is arranged on the frame base and corresponds to the upper part of the feed complementing station. The net laying mechanism is arranged on the frame base and corresponds to the upper part of the net laying station. The automatic molding machine for the automobile interior part felt has the advantages of high integration degree, small occupancy area, a few on-line workers, high production efficiency and energy conservation.

A tampon has a generally uniform fiber distribution along its length, an insertion end, a withdrawal end, and a longitudinal axis. A finger recess having a depth of at least about 5 mm is formed into the withdrawal end. Nonetheless, a column strength of at least about 10 Newtons (N) can still be achieved. The tampon can be formed by winding an absorbent fibrous web around a winding mandrel; transferring the blank into a press; inserting a forming mandrel into one end of a tampon blank while the tampon blank is positioned in the press; moving a plurality of press jaws toward a central longitudinal press axis to compress the tampon blank and to form a compressed tampon having a finger recess formed into the one end of the tampon; and ejecting the compressed tampon from the press.

A woven preform used to reinforce a composite structure which includes a central portion having a plurality of interwoven layers. The preform also includes first and second end portions having a plurality of independent woven layers that are integrally woven with the plurality of interwoven layers in the central portion and which extend along the entire length the preform. Interspersed between the plurality of independent woven layers in the first and second end portions are bias plies. The first and second end portions can have through thickness reinforcements comprising reinforcement fibers that traverse through the independent woven layers and the bias plies, locking them together.

The present invention provides compact spiral-wound filter elements having cassette-like performance. The invention further provides filtration systems (e.g., TFF systems) and processes (e.g., SPTFF processes) employing compact spiral-wound filter elements having cassette-like performance.

Hydroxyl polymer-containing compositions, especially hydroxyl polymer-containing compositions that can be processed into polymeric structures, especially polymeric structures in the form of fibers are provided.

This present application relates to a three dimensional negative Poisson's ratio spacer knitted fabric and a method for making the same; the fabric includes a first surface layer fabric, a second surface layer fabric, and a spacer yarn layer connecting the first surface layer fabric with the second surface layer fabric, both the first surface layer fabric and the second surface layer fabric are bi-dimensional structures having the negative Poisson's ratio effects; the method is to compress and/or stretch a three dimensional mesh spacer knitted base fabric along one or two plane directions to form a structures having the negative Poisson's ratio effects. The advantages of the present application include low making cost, simple operation method, significant negative Poisson's ratio effects, good elastic recovery, and high practical application value.

Polymer melt compositions, especially polymer melt compositions that can be processed into polymeric structures, especially polymeric structures in the form of fibers are provided.

It is an object of the invention to provide a method of easy production of a nonwoven fabric having at least one projection and at least one recess and to a method of easy processing of a nonwoven fabric.

A method of producing a nonwoven fabric having at least one projection and at least one recess, comprising the steps of non-homogeneous stretching a nonwoven fabric so as to form a nonwoven fabric with high-stretch regions and low-stretch regions, and forming a nonwoven fabric having at least one projection and at least one recess by placing the nonwoven fabric with high-stretch regions and low-stretch regions on a support and spraying a fluid onto the nonwoven fabric with high-stretch regions and low-stretch regions for treatment.

The invention relates to a high-temperature resistant polyacrylonitrile-based carbon fiber heat insulation felt, a preparation method and the use thereof. The ratio of fiber parts on X-Y planes to those in Z direction of the high-temperature resistant polyacrylonitrile-based carbon fiber heat insulation felt is 50:1-250:1; and polyacrylonitrile-based carbon fiber substrate with a chop length of 50 to 150mm is prepared into the polyacrylonitrile-based carbon fiber heat insulation felt with a thickness of 8 to 12mm, a gram weight of 500 to 700g/cm<2>, and a tensile strength of 12 to 50N/2cm. The polyacrylonitrile-based carbon fiber heat insulation felt can be used for preparing carbon/carbon composite heat insulation plates.

The invention provides an automotive upholstery pre-shaping machine adopting an air filling method, belonging to the technical field of automotive upholstery production devices. The automotive upholstery pre-shaping machine adopting the air filling method comprises a pre-shaping box, an airflow circulation mechanism, a fiber weighing and measuring mechanism, a fiber conveying mechanism and a hot air generation mechanism, wherein a box cover is formed on the top part of the pre-shaping box; an aspiration pipe adapting port is connected with the top of the box cover in a matching way; a box chamber opening/closing mechanism is arranged on one side of the pre-shaping box; a pre-shaping mould is arranged on the top of a box chamber; an aspiration hole is opened in the pre-shaping mould; a fiber feeding mechanism is arranged on the bottom of the pre-shaping box; the hot air generation mechanism is connected with the airflow circulation mechanism by a pipeline; and the airflow circulation mechanism comprises a working motor, a fan, an aspiration pipe, an air supply pipe, a connection cotton box and a cotton guide box. The automotive upholstery pre-shaping machine adopting the air filling method has the advantages that the quality of automotive upholsteries which are pressed and shaped by subsequent pressing processes can be reliably guaranteed, the overall structure is simple, and the labor intensity is decreased for workers; the processing efficiency is high and the energy is saved; and in addition, fibers with a low melting point are vitrified, so that the prototypes of the automotive upholsteries are formed.

The invention provides an airflow filling type automotive interior preforming machine and belongs to the technical field of automotive interior production devices. The airflow filling type automotive interior preforming machine comprises a preforming box, an airflow circulating mechanism, a fiber conveying mechanism, a hot air generating mechanism and a fiber weighing and metering mechanism, wherein a box cover is formed on the top; a box cavity opening/closing mechanism is arranged on one side of the preforming box, and the other side of the preforming box is provided with an access door; a preforming mold is arranged on the top of the box cavity; a suction hole is formed on the preforming mold; a fiber feeding mechanism is arranged at the bottom of the preforming box; the airflow circulating mechanism is connected with the box cover in a matching mode; the fiber weighing and metering mechanism comprises a frame, a cotton loosening box, a cotton storage box, a first upper star-shaped roller, a second upper star-shaped roller, a first lower star-shaped roller, a second lower star-shaped roller, a cotton shifting roller, a roller shaft power transmission device and a weighing and metering hopper. The airflow filling type automotive interior preforming machine has the advantages that: the density consistency of a fiber cotton layer adsorbed to the preforming mold can be ensured; the whole structure is simple, and the labor intensity of a worker is lightened; ideal processing efficiency is achieved, and energy is saved; and moreover, according to the fiber weighing and metering mechanism, the metering effect can be guaranteed.

The invention provides an automotive upholstery pre-forming machine by using an airflow filling method, and belongs to the technical field of automotive upholstery producing devices. The automotive upholstery pre-forming machine comprises a pre-forming box, a fiber weighing and measuring mechanism, a fiber conveying mechanism and a hot air generating mechanism, wherein a box cover is formed on the top of the pre-forming box; a box cavity opening and closing mechanism is assembled on one side of the pre-forming box; an access door is assembled on the other side of the pre-forming box; a pre-forming mold is assembled on the top of a box cavity; an induced draft hole is arranged on the pre-forming mold; and a fiber feeding mechanism is assembled at the bottom of the pre-forming box. The automotive upholstery pre-forming machine is characterized by further comprising an airflow circulating mechanism comprising a working motor, a fan, an induced draft tube, an air supply tube, a connected cotton box and a cotton guiding box. The automotive upholstery pre-forming machine has the advantages that density consistency of a fiber cotton layer absorbed on the pre-forming mold can be ensured; the integral structure is simple, and the labor intensity of workers is reduced; processing efficiency is perfect, and energy conservation is facilitated; and the airflow circulating mechanism can realize effects of supplying cotton under positive pressure, absorbing fibers under negative pressure and guiding high-temperature air in the box cavity.