32results about How to "Improved seam strength" patented technology

A papermaker's fabric, usable in the forming section of a paper machine, having a top layer and a bottom layer of cross-machine direction (CD) wefts. The top (forming) layer and bottom (wear side) layer are woven together to form a multi-layer fabric. CD packing yarns are inserted between adjacent wear side weft yarns. The packing yarns reduce the void volume on the wear side of the cloth without significantly disrupting the air permeability or increasing the caliper of the fabric. The placement of the packing yarns also adds to the CD stability and seam strength of the fabric and reduces the lateral movement of the wear side weft yarns.

The invention discloses herein the use of short wavelength infrared energy to selectively control the locations where thermal fusing or bonding takes place or does not take place in an industrial fabric. Also, the method involves forming a mushroom cap on the tail of a fiber/yarn or monofilament and also creating a surface pattern formation.

The invention provides a traceless joint fabric knitting method of a double-needle-bed warp knitting machine, which is characterized by including the following steps of selecting warps materials, setting yarn laying motions of guide bars and utilizing yarn threading and aligning process; beaming warps; mounting the guide bars with swing yarn guide needles in a needle bed working area, performance traceless jointing at the edges of fabrics of a front needle bed and a rear needle bed; making up information of the yarn guide needles; performing machine-boarding processing adjustment and knitting; and arranging the fabrics. By the traceless joint fabric knitting method of the double-needle-bed warp knitting machine, the technical problem of cylindrical knitting by twice or more guiding on the double-needle-bed warp knitting machine can be solved, joint wrinkles of preformed parts of various cylindrical warp knitting composite materials are eliminated, mechanic performance of the spinning composite materials are improved, ultra-wide products can be provided for cloth used in shed cover industry. In addition, perfect traceless jointing can be provided for warp-knitted fully-formed clothes and appearance and comfortableness of the clothes can be improved.

A belt member is formed with a seam portion by overlapping and adhering both longitudinal end portions thereof to constitute an endless belt stretched and circulated by a rotative, first stretching member and a second stretching member. A length of the seam portion is no less than a length between a first point at which the endless belt is separated from one of the first stretching member and the second stretching member and a second point at which the endless belt is brought into contact with the other one of the first stretching member and the second stretching member.

A method is provided for producing a bonded joint between fiber-reinforced thermoplastic parts to be joined, in which fiber-containing plastic material is mixed into the joining zone while friction stir welding the parts to be joined in the form of a butt joint. A device for carrying out such a method for a joined component is also provided.

A sheet-forming wire with a lower fabric layer formed from a multiplicity of identically constructed lower weave repeats, each of which contains longitudinal threads extending in the lower fabric layer, and lower cross threads, with the lower cross threads extend only in the lower fabric layer. The lower cross threads are tied into the lower fabric layer in each case by exactly two longitudinal threads extending in the lower fabric layer, in that each particular lower cross thread is run under by a first longitudinal thread at a first tying-in point (x) and is run under by a second longitudinal thread at a second tying-in point (x). The lower cross threads form first lower cross threads (I) and second lower cross threads (II). The first lower cross threads form a shorter float on the running side than the second lower cross threads.

The invention provides an electromagnetic swing yarn guide needle device used for a double-needle-bed warp knitting machine, which is characterized by comprising a bearing seat, a swing piece, an L-shaped yarn guide needle and an electromagnetic control part. The bearing seat is fixed on a guide bar plate of the double-needle-bed warp knitting machine, the electromagnetic control part is arranged in a cavity of the bearing seat, the top end of the swing piece is connected with the electromagnetic control part, the upper portion of the swing piece is rotationally connected with the bearing seat, and the bottom end of the swing piece is connected with the L-shaped yarn guide needle. Connecting yarns can be inlaid on edge knitting needles in a front needle bed working area and a rear needle bed working area alternatively by the electromagnetic swing yarn guide needle device according to knitting process, so that seamless cylindrical warp-knitted fabrics or seamless ultra-wide full-width fabrics are formed after fabrics are taken off the machine. Connecting seams of a front fabric and a rear fabric are in weaving structures identical with twice or more guiding fabrics, and the bottleneck problem of existing double-needle-bed warp knitting process is solved.

The invention belongs to the technical field of glass fiber reinforced plastic pipe cylinders and concretely discloses. The technical scheme of the apparatus is that the apparatus comprises a surrounding track arranged on the external side of a lower-segment glass fiber reinforced plastic cylinder body and a walking trolley arranged on the track and formed by an upper rack body and a lower rack body connected via connection rods, wherein a resin fiber yarn mechanism is arranged on the walking trolley; the upper rack body is formed by a sector-shaped framework in an arc-shaped correspondence to the external side surface of the glass fiber reinforced plastic cylinder body; a unidirection cloth winding mechanism and a resin fiber yarn winding mechanism are mounted in the sector-shaped framework. And/or the apparatus comprises a left and right walking trolleys connected via a telescopic mechanism; each walking trolley is formed by an upper rack body and a lower rack body connected via connection rods; a resin fiber yarn mechanism is arranged on the left or/and right walking trolley; the upper and lower rack bodies on the left and right sides are respectively formed a sector-shaped framework in an arc-shaped correspondence to the inner side surface of the glass fiber reinforced plastic cylinder body; and a unidirection cloth winding mechanism and a resin fiber yarn winding mechanism are mounted in the sector-shaped framework. By the use of the apparatus, the inner and outer side walls of upper and lower glass fiber reinforced plastic cylinder bodies can be assembled, abutted and winded.

A seam for joining together the ends of woven fabric to form an endless belt is particularly suitable for joining the ends of woven synthetic dryer fabrics as used in the dryer section of paper making machines and is particularly applicable to joining the ends of those dryer fabrics in at least the machine direction of the fabric. A papermaking fabric comprising a woven fabric body having opposing ends, said fabric body having a system of MD-yarns interwoven with a system of CD yarns. The MD-yarns include first pairs of MD-yarns, second pairs of MD-yarns and third pairs of MD-yarns and the first and the second pairs of MD-yarns form two seam loops, while the third MD-yarns forms the binder. The loops are at identical length to each other over the whole fabric width. Such seam construction reduces marking and increases the seam strength and seam abrasion resistance.

Discloses is a low-noise dry-type iron core reactor assembling process. The assembling process includes the steps: S5-1, taking a flexible pouring guide pipe, blocking one end of the flexible pouring guide pipe, and uniformly drilling small holes in a section equal to the perimeter of an iron core column along a same side of the pouring guide pipe; S5-2, moving the iron core column down to enable a seam on the upper portion to be exposed; S5-3, enabling the pouring guide pipe to surround the seam by one circle, keeping the small holes to face the seam, and using a rubber belt to tension, wind and fix the pouring guide pipe; S5-4, hanging a coil up to enable a seam on the lower portion to be exposed; S5-5, burying the pouring guide pipe at the seam on the lower portion by referring to S5-3, and resetting an upper cushion block and a lower cushion block; S6, transferring a reactor into vacuum pouring equipment, and connecting the guide pipe; S7, vacuumizing to complete vacuum pouring of a seam of the iron core column and an iron yoke; S8, releasing vacuum, and transferring a reactor product into a curing furnace to complete resin curing of the seam. By the low-noise dry-type iron core reactor assembling process, vacuum pouring of the seam of the iron core column and the iron yoke of a dry-type iron core reactor can be realized, firmness in bonding and less proneness to loosening are realized, and seam noise is effectively inhibited.

The invention provides a piezoelectric swing yarn guide needle device for a double-needle-bed tricot machine. The piezoelectric swing yarn guide needle device comprises a support seat, a swing plate and an L-shaped yarn guide needle, wherein the support seat is fixedly connected with a combing plate of the double-needle-bed tricot machine, the upper end of the swing plate is fixed in the support seat, and the lower end of the swing plate is connected with the L-shaped yarn guide needle. With the piezoelectric swing yarn guide needle device, connecting yarns can be padded on edge knitting needles alternatively in front and rear needle bed working areas according to the needs of the knitting technology, so that a seamless cylindrical warp knitting fabric or a seamless superwide flat fabric is formed after the fabric is off the machine. The connection seams of the front and rear fabrics has a textile structure completely consistent with fabrics with two combs or more than two combs, and the bottleneck problem of the existing double-needle-bed warp knitting process is overcome. Warp knitting fabric knitted by adopting the piezoelectric swing yarn guide needle device disclosed by the invention can be used as tubular warp knitting composite materials for decoration, garment and various industries.

The invention relates to an aliphatic polyketone compound comprising 85.0 wt. % to 99.5 wt.% aliphatic polyketone and 0.5 wt. % to 15.0 wt.% ultra-high molecular weight polyethylene.

The invention discloses a high-speed thick package film bag making machine, which comprises an air expansion shaft, a clamping motor, an ironing corner mechanism, a cooling air mechanism, an ironing cutter mechanism, a cutter mechanism, a water circulating cooling mechanism, a conveying motor, a conveying mechanism and a programmable logic control mechanism, wherein the ironing corner mechanism, the cooling air mechanism, the ironing cutter mechanism, the cutter mechanism and the water circulating cooling mechanism are sequentially connected with the working surface of the bag making machine. The high-speed thick package film bag making machine is characterized in that the working surface of the ironing cutter machine is higher than the working surface of the ironing corner mechanism, a rubber roll servo motor is arranged at the right side of the working surface of the ironing cutter mechanism, and is used for driving a pressing rubber roll to convey a to-be-processed film bag to the fixing position of the ironing cutter mechanism for seam ironing, the film bag after the seam ironing by an ironing cutter vertically falls onto the water circulating cooling mechanism and the working surface of the cutter mechanism along the tail end of the right side of the ironing cutter mechanism under the action of gravity, and the conveying motor drives the conveying mechanism to continuously work when the package film bag making machine starts to work. The package film bag making machine has the advantages that the production efficiency is improved by two times, and the seam ironing strength of the film bag is improved by five times.

The invention discloses a necking tool and necking method of a filling valve. The necking tool comprises a pressing sleeve, a screw sleeve, a spring, a screw cap and a top block, wherein the pressingsleeve is a rotary body, the screw sleeve is arranged on the left side of the pressing sleeve, the top block is arranged at the right end of the screw sleeve, the screw cap is arranged at the left endof the screw sleeve, the spring is arranged between the screw cap and the top block, and an inclined edge and a plane are arranged on the right side of the pressing sleeve and used for being matchedwith the necking end of a shell of the filling valve. Compared with the prior art, the necking tool and necking method have the positive effects that in the using process of the necking tool, and thedisposable necking of the shell of the valve is realized by using a press machine through the inclined plane and the plane matching the shell in the inner cavity of the pressing sleeve. Compared withthe necking tool in the prior art, the necking tool is obviously improved in the outer shape, the necking mode and the necking strength, the machining quality and efficiency are greatly improved, andthe labor intensity of an operator is reduced.