33results about How to "Solve curling" patented technology

The invention relates to soft sheepskin-imitating polyurethane resin which includes the following components: wet-method polyurethane resin, N,N-dimethylformamide, paper pulp powder, a hand feeling agent, a permeation agent, an anti-crimping agent and an oily color material. The invention also relates to a method of producing sheepskin-imitating artificial leather with the soft sheepskin-imitating polyurethane resin, wherein the method includes the following steps: 1) impregnating a base cloth in a soft sheepskin-imitating polyurethane resin mixture liquid; 2) regulating sizing quantity through extrusion, and performing solidification, water washing, drying and polishing to prepare wet-method base; and 3) performing veneering and vacuum grain suction to the wet-method base to prepare the sheepskin-imitating artificial leather. The sheepskin-imitating artificial leather has a soft and light feel, has fine and elastic hand feeling, is high in tear strength and good in weather and wear resistance, has a soft and natural surface color, has full grains and has strong stereoscopic sense.

The invention discloses a treatment method for sinking a steel casing to encounter a boulder, a steel casing structure and a drilled pile, and relates to the technical field of steel casing construction. The treatment method includes the following steps that S1, a first steel casing is inserted at a designed pile location until the bottom of the first steel casing encounters the boulder, and the diameter of the first steel casing is larger than that of a designed pile hole; S2, sweep hole operation is carried out along the inner wall of the first steel casing, the boulder at the hole wall is broken and the pile hole is excavated until the bottom of the pile hole reaches the elevation of a bottom port of the steel casing required by design; S3, a bottom port of a second steel casing is lowered to the elevation of a bottom port of the steel casing, and the diameter of the second steel casing is larger than the diameter of the designed pile hole; and S4, a gap in the first steel casing and the second steel casing is filled with concrete. According to the treatment method for sinking the steel casing to encounter the boulder, the steel casing can be lowered into the designed elevationin the pile hole, and the problem of rolled edge or stuck at the bottom port of the steel casing under the condition of steel casing sinking to encounter the boulder is solved.

The invention relates to the technical field of shell fabric weaving and specifically relates to a double-layer air layer pure separation shell fabric capable of being tailored at will. The double-layer air layer pure separation shell fabric an upper-layer plain single face and a lower-layer plain single face, wherein the upper-layer plain single face and the lower-layer plain single face are woven from 20 D asahi kasei spandex and 40 S / 1 toyobo acrylic fiber yarns, the upper-layer plain single face and the lower-layer plain single face are woven and connected together through spandex betweenthe upper-layer plain single face and the lower-layer plain single face, an a thermal-insulation air layer is formed between the upper-layer plain single face and the lower-layer plain single face, the spandex is chosen from asahi kasei 30 D spandex, and the double-layer air layer pure separation shell fabric capable of being tailored at will is woven by a six-way circular weaving method. The double-layer air layer pure separation shell fabric disclosed by the invention has the advantages that upper-layer gray cloth and lower-layer gray cloth are connected through the spandex, no chemical adhesion aid is utilized, and environmental friendliness and hygiene are achieved; the double-layer air layer pure separation shell fabric disclosed by the invention is of a unique lock structure, so thatthe shell fabric can be tailored at will, and the problem of hemming of the shell fabric after being tailored is solved; the thermal-insulation air layer is formed between the two layers of cloth, sothat the fabric has more thermal insulation and good breathability.

The invention relates to an embedded mulch covering perforating seeder, which is suitable for field film spreading and sowing, and belongs to the field of agricultural machinery. It consists of drive assembly, transmission system, drive wheel, mulch, opener, pressure wheel, electric push rod, spraying system, control box, embedded film disc, spring, duckbill perforated sowing roller, fertilizer box, row The device is composed of a seeder, a fertilizer applicator and a frame. The device is driven by the drive assembly through the drive system to drive the drive wheel to work. The opener column is installed on the adjustable frame, and the opener and the opener column are installed at 45°. On the column of the opener, two film-embedded discs at a 45° angle to the column cooperate with the opener to complete the film laying. Duckbill punching sowing rollers are installed at the rear end of the rack, and the distance between each duckbill is adjustable. A truncated conical pressing wheel is installed at the rear end of the whole machine, and the pressure can be adjusted by the monitoring system according to agricultural requirements. Duckbill perforated sowing roller, fertilizer box, seed meter and fertilizer applicator constitute the sowing system of the device. The device is designed with two sets of sowing systems, which are installed equidistantly on both sides of the frame to complete the fertilization and sowing process. The control box controls the lamination strength of the device by controlling the expansion and contraction of the electric push rod.

The invention discloses a knitted fabric and a preparation method thereof, wherein the knitted fabric comprises mutually woven A yarn and B yarn, the A yarn comprises double cotton yarns input in the same way, and the B yarn comprises a fiber network with special-shaped cross-section input in the same way Silk, low-melting chemical fiber and elastic yarn; in the organizational structure of the knitted fabric, the low-melting chemical fiber is bonded to the same path of special-shaped cross-section fiber network silk and elastic thread, and is bonded to the A yarn or B yarn of the adjacent path. The preparation method includes the following steps: S1. Weaving: input A yarn and B yarn in different ways for weaving; A yarn includes double cotton yarns input in the same way, and B yarn includes fiber network filaments with special-shaped cross-sections, low-melting chemical fibers and Stretch yarn; S2. High temperature setting: adjust the setting temperature to melt the cortex of the low melting point chemical fiber to produce adhesion effect. The invention makes the fabric anti-rolling, effectively solves the curling problem of the single-knitted fabric, and provides great convenience for the knitted fabric to make clothes.