34results about How to "Consistent extrusion speed" patented technology

The invention relates to a hot and humid and comfortable polyester fiber FDY silk for winter and a preparation method thereof. The preparation method comprises the following steps that the hot and humid and comfortable polyester fiber FDY silk for winter is prepared by conducting weighing, extrusion by a composite spinneret plate, cooling, oiling, stretching, heat shaping and winding on a spinningmelt, the texture of the silk is polyester with a matte agent being dispersed, the thermal resistance of the obtained woven fabric is higher than or equal to 0.18m<2>. DEG C/W, the moisture vapor resistance of the woven fabric is lower than or equal to 14 Pa.m<2>/W, cross-shaped spinneret orifices and double-cross-shaped spinneret orifices are formed in the composite spinneret plate simultaneously, the micropore length ratio of the cross-shaped spinneret orifices and the double-cross-shaped spinneret orifices is equal to product of the equivalent diameter ratio and the coefficient K, the value range of the coefficient K is between 0.97 and 1.03, an oiling agent used in the oiling contains crown ether, and the content of crown ether is 67.30-85.58wt%. The preparation method is simple, theobtained polyester fiber FDY is excellent in thermal-wet comfort, and has considerable application prospects.

The invention relates to hot-wet comfortable polyester-fiber draw texturing yarns (DTYs) for winter, and a preparation method of the DTYs. The preparation method comprises the steps of metering spinning melt, extruding by using a composite spinneret, cooling, oiling and winding to obtain polyester pre-oriented yarns (POYs); enabling the POYs to pass through a yarn guide pipe and a network, stretching under the condition of heating, carrying out false twisting and heat-setting, and molding by winding so as to obtain the hot-wet comfortable polyester-fiber DTYs; the material of the DTYs is polyester with a dispersed matting agent; the thermal resistance and moisture resistance of knitted fabric made from the DTYs are respectively more than or equal to 0.16m<2>.DEG C/W and less than or equalto 12Pa.m<2>/W; the composite spinneret is provided with a cross-shaped spinneret orifice and a double-cross shaped spinneret orifice; the ratio of the micropore length of the cross-shaped spinneret orifice to the micropore length of the double-cross shaped spinneret orifice is equal to a product of the ratio of the equivalent diameter and a coefficient K, wherein the value range of the coefficient K is 0.97-1.03; an oiling agent for oiling contains crown ether, and the content of the crown ether is 67.30-85.58wt%. The preparation method provided by the invention is simple, and the obtained hot-wet comfortable polyester-fiber DTYs are excellent in hot-wet comfort performance.

The invention relates to polyester cotton-like type differential shrinkage composite yarns and a preparation method thereof. The preparation method comprises the following steps: respectively preparing modified polyester POY (Pre-Oriented Yarn) and FDY (Fully Drawn Yarn) wires, and then compounding the POYs with the FDYs to prepare the polyester cotton-like type differential shrinkage composite yarns, wherein the color difference delta E of the prepared composite yarns is less than 0.200, a beam of POYs or FDYs extruded by the same yarn spraying plate simultaneously contains crossed single yarns and trefoiled single yarns; a molecular chain of the modified polyester comprises a branched diol chain segment, a structural formula of the branched diol is as follows: the formula (1) is shown inthe description; in the formula, R1 and R2 are straight-chain alkylene with carbon atomic number 1-3, R3 is alkyl with carbon atomic number 1-5, R4 is alkyl with carbon atomic number 2-5, and a matteagent dispersed in the modified polyester is amorphous titanium dioxide and amorphous silicon dioxide or a mixture of calcium carbonate and the amorphous silicon dioxide. The method disclosed by theinvention is simple and reasonable, and the prepared composite yarns have good fluffy, moisture absorption and perspiration performance.

The invention relates to a moisture absorption and perspiration fiber and a preparation method thereof. The moisture absorption and perspiration fiber is prepared by measuring polyester melt, extruding by a compositing spinneret plate, cooling, oiling, stretching, thermally shaping and coiling, wherein the composite spinneret plate is provided with a cross spinneret hole and a spinneret hole shaped like the Chinese character Wang, a length ratio of micropores of the cross spinneret hole and the spinneret hole shaped like the Chinese character Wang is equal to a product of an equivalent diameter ratio of the cross spinneret hole and the spinneret hole shaped like the Chinese character Wang and a coefficient K, the equivalent diameter is a ratio of an area and perimeter of a cross section ofthe spinneret hole, the valuing range of the coefficient K is 0.97 to 1.03, an oiling agent comprises crown ether, the content of the crown ether is 67.30 to 85.58 percent, and a capillary parameterof the prepared moisture absorption and perspiration fiber is greater than or equal to 0.16. The preparation method is simple and reasonable in method, and the prepared fiber has excellent moisture absorption and perspiration performance and has good popularization value.

The invention relates to polyester-nylon composite yarn and a preparation method thereof. The polyester-nylon composite yarn is prepared by conducting measurement, composite spinneret extrusion, cooling, oil applying, stretching, heat shaping and winding on PET flux and PA flux, a composite spinneret is provided with a spinneret hole A and a spinneret hole B different from the spinneret hole A atthe same time, and the microporous length ratio of the spinneret hole A to the spinneret hole B is equal to the product of the equivalent diameter ratio of the spinneret hole A to the spinneret hole B, a coefficient K and the consistency coefficient ratio of a material flowing through the spinneret hole B to a material flowing through the spinneret hole A, wherein the equivalent diameter is the radio of the cross sectional area of one spinneret hole to the cross sectional perimeter of the spinneret hole, and the coefficient K is 0.97-1.03; composite spinneret extrusion means that the PET fluxis extruded from the spinneret hole A, and the PA flux is extruded from the spinneret hole B, or the PET flux is extruded from the spinneret hole B, and the PA flux is extruded from the spinneret holeA. The method is simple and reasonable, the prepared polyester-nylon composite yarn not only has the advantages of a good moisture absorption performance and good dimensional stability at the same time, but also has rich color and lustre, and has an excellent promotion value.

The invention provides a PVC floor formula and a floor processing technology using the same. The objective of the invention is to overcome the problems that individual usage of tribasic lead sulfate and dibasic lead sulfate as a stabilizing agent poses great harm to a human body and that individual usage of calcium ricinoleate as a stabilizing agent leads to poor floor stability. The PVC floor formula comprises, by mass, 54 to 58% of a PVC resin, 26 to 30% of a softener dioctyl phthalate, 12 to 16% of calcium carbonate, 0.05 to 0.15% of an antistatic agent SN, 0.5 to 0.7% of a fire retardant aluminum hydroxide, 0.2 to 0.4% of glitter, 0.3 to 0.7% of tribasic lead sulfate and dibasic lead sulfate and 0.3 to 0.7% of calcium ricinoleate. The floor processing technology mainly comprises the following steps: batching; feeding; extrusion; press polish; cooling; rolling; and warehousing. According to the invention, a mixture of tribasic lead sulfate, dibasic lead sulfate and calcium ricinoleate is used as a stabilizing agent, so harm of lead in tribasic lead sulfate and dibasic lead sulfate to the human body is reduced, and floor stability is guaranteed.

The invention relates to a porous ultra-bright polyester fiber and a preparation method thereof. The preparation method comprises the steps that polyester melt undergoes metering, composite spinneretextruding, cooling, oiling, stretching, heat setting and winding, wherein a composite spinneret is provided with a triangular spinneret hole and a --shaped spinneret hole, the ratio of micropore lengths of the triangular spinneret hole and the --shaped spinneret hole is equal to the product of the equivalent diameter ratio and the coefficient K, the equivalent diameter is the ratio of the cross sectional area of the spinneret hole to the perimeter of the cross section, and the value range of the coefficient K is 0.97 to 1.03; an oiling agent for oiling contains crown ether, and the crown ethercontent is 67.30-85.58wt%. The preparation method is simple and reasonable, and the smooth spinning of the fiber is achieved. The prepared porous ultra-bright polyester fiber has a fineness of 75-150dtex, a breaking strength larger than or equal to 3.8 cN/dtex and an oil content of 0.90+/-0.20%, a glossiness larger than or equal to 80% and a full-package rate larger than or equal to 99%.

The invention discloses a thin film extruding speed control device for a plastic extruding and drawing machine. The thin film extruding speed control device for the plastic extruding and drawing machine comprises a cooling water tank; a guide roller is mounted at the left upper end of the cooling water tank; a first supporting roller is arranged in the cooling water tank; a front mounting frame and a rear mounting frame are respectively arranged on the front side wall and the rear side wall of the upper end in the middle of the cooling water tank; each of the front mounting frame and the rearmounting frame is connected with a rotating shaft; each of the two rotating shafts is connected with a connecting mounting plate; a second supporting roller is mounted on the two connecting mounting plates; a first gear is mounted on a shaft body, positioned outside the cooling water tank, of the rotating shaft connected to the front mounting frame; a potentiometer is mounted on the front mountingframe; the potentiometer is electrically connected to a control frequency converter of a driving motor of a screw of the plastic extruding and drawing machine; a second gear is mounted on a rotatingadjusting shaft of the potentiometer; and the second gear is engaged with the first gear. According to the thin film extruding speed control device for the plastic extruding and drawing machine, the extruding speed of a thin film can be automatically adjusted and controlled so that the extruding speed of the thin film is kept consistent with the traction speed of a tractor.