55 results about "Crêpe paper" patented technology

The utility model relates to a transformer lead insulation binding machine, and belongs to the technical field of transformer lead binding. According to the technical scheme, a walking motor (206) drives a walking trolley to move back and forth between two lead supporting frames (1); an output shaft of the motor (204) penetrates through the center of the motor support (217) and is provided with a driving disc (212), a belt (205) is wound between the driving disc (212) and the insulation wrapping disc (203), the motor (204) drives the belt (205) to rotate through the driving disc (212), the belt (205) drives the insulation wrapping disc (203) to rotate, the disc (203) rotates to drive the crepe paper roll (207) to rotate, and the crepe paper is wound on the outer surface of a lead. The insulation binding machine has the advantages that manual operation is replaced by the insulation binding machine, binding time is shortened, working efficiency is improved, bound insulation paper is uniform and high in compactness, and insulation electrical performance is improved.

In an embodiment, a package can include a first creped paper packaging material, a second creped paper packaging material, and one or more shipping items. The first creped paper packaging material can include a first single-layer creped packaging paper. The second creped paper packaging material can include a second single-layer creped packaging paper. The first creped paper packaging material and the second creped paper packaging material can define a respective material perimeter, with the second creped paper packaging material being attached to the first creped paper packaging material proximal their respective material perimeters to form a set of bound borders. The first creped paper packaging material and the second creped paper packaging material can thereby be attached together in a manner to define a package enclosure. The one or more shipping items can be carried in the package enclosure.

To provide an absorbent article including an absorber comprising an absorbent core encapsulated in a core wrap sheet of crepe paper, and capable of achieving both improvement of rewet by increasing liquid diffusibility, and suppression of breakage of the core wrap sheet.SOLUTION: An absorbent article 1 includes an absorber 11. The absorber comprises an absorbent core 11a, a skin-side core wrap sheet 11b1 positioned on a skin side in a thickness direction of the absorbent core, and a non-skin-side core wrap sheet 11b2 positioned on a non-skin side in the thickness direction of the absorbent core. The skin-side core wrap sheet and the non-skin-side core wrap sheet are composed of crepe paper having unevenness. A degree of unevenness of the skin-side core wrap sheet is smaller than a degree of unevenness of the non-skin-side core wrap sheet.SELECTED DRAWING: Figure 1

In an embodiment, a package enclosure can include a first creped paper packaging material and a second creped paper packaging material. The first creped paper packaging material can include a first single-layer creped packaging paper. The second creped paper packaging material can include a second single-layer creped packaging paper. The first creped paper packaging material and the second creped paper packaging material can define a respective material perimeter, with the second creped paper packaging material being attached to the first creped paper packaging material proximal their respective material perimeters to form a set of bound borders. The first creped paper packaging material and the second creped paper packaging material can thereby be attached together in a manner to define a package enclosure. The materials used for the package enclosure may be referred to as a package material combination.

The invention discloses a parameter optimization method, device and equipment for electrical crepe paper and a readable storage medium, and the method comprises the steps: determining a plurality of performance target parameters and a plurality of processing optimization parameters of the electrical crepe paper, and determining all processing optimization parameters influencing each performance target parameter and a numerical value adjustment range of each processing optimization parameter; constructing a regression model corresponding to each performance target parameter based on each performance target parameter and each processing optimization parameter corresponding to the performance target parameter; and solving the regression model corresponding to each performance target parameter to maximize the parameter value of each performance target parameter in combination with the numerical value adjustment range of each processing optimization parameter, and determining the optimal parameter value of each processing optimization parameter. Therefore, the scientificity and the accuracy of determining the processing parameters of the electrical crepe paper can be comprehensively improved through parameter analysis, model construction and optimization solution, and the product performance and the processing quality are effectively improved.

The utility model relates to the technical field of masking tape production, and discloses a masking tape rewinding machine with a flattening structure, which comprises a base, the top end of the base is fixedly connected with a support frame, and the front end of the left side of the top of the base is fixedly connected with a support rod. According to the masking tape rewinding machine with the flattening structure, a second hydraulic cylinder and a limiting roller are arranged, the second hydraulic cylinder drives the limiting roller to ascend and descend through a connecting frame, so that masking tape can be limited, the masking tape is prevented from being stuck together in the conveying process, a first hydraulic cylinder drives a pressing roller to ascend and descend, the position of the pressing roller is adjusted, and the working efficiency is improved. The limiting spring can enable the pressing roller to abut against the top end of the winding roller through the elasticity of the limiting spring, the pressing roller can flatten the masking tape wound outside the winding roller, wrinkles are prevented from being generated in the winding process, and the problems that the wound masking tape is inconvenient to flatten, and the quality of the masking tape is likely to be affected are solved.

The utility model discloses a cable crepe paper feeding device which is provided with a tower-shaped base, the bottom of the tower-shaped base is provided with a fixing hole site, a plurality of annular adjusting grooves are formed in the tower surface of the tower-shaped base, each adjusting groove is provided with a plurality of adjusting blocks capable of sliding on the adjusting groove, and the adjusting blocks are positioned on the adjusting grooves through fixing pieces such as bolts. And a paper guide hole for the crepe paper to pass through is formed in the adjusting block. The high-voltage stranding machine is matched with high-voltage stranding equipment for use, conductor strand blocks pass through the tower surface of the tower-shaped base and crepe paper is guided and fed through the paper guide holes and then fully wraps each strand of conductor when a conductor is segmented and stranded in high-voltage cable production, so that the wrapping precision is high, the guide of the crepe paper is accurate and adjustable, the tape breakage rate of the crepe paper is reduced, and the waste rate of consumables is reduced; reliable roundness of the cable is ensured, the quality of high-voltage cable products is improved, and the first-pass yield of the high-voltage cable is improved.

The utility model relates to a mutual inductor, in particular to a primary coil cylindrical framework of a voltage transformer, and solves the problem of structural design of the mutual inductor. The primary coil cylindrical framework of the voltage transformer comprises a cylindrical barrel, a notch is formed in the barrel in the radial direction, positioning grooves are formed in the sides, symmetrical to the circle center of the barrel, of the notch, clamping parts matched with the notch in an embedded mode are arranged on the opposite side faces of the notch, and the barrel is formed through injection molding of alloy plastics. The cylinder body is formed by alloy plastic particles through hot melting injection molding, and the tolerance of the inner diameter, the outer diameter and the height of the cylinder body is smaller than or equal to + / -0.5 mm. The injection molding process has the advantages of high efficiency, realization of automatic mass production, high dimensional precision, round cylinder opening, good insulation performance, flame retardance, matching of a softening point and an epoxy resin curing temperature, and effective bonding with an epoxy resin cured material. And the phenomenon that the partial discharge capacity of the high-voltage side of the voltage transformer exceeds the standard can be improved and solved by matching with semiconductor crepe paper or semiconductor cloth tapes wrapped outside the inner and outer diameters.

The invention discloses equipment for preparing an epoxy impregnated paper sample, the equipment comprises a mold, an epoxy resin casting material and a vacuum oven, the mold comprises two groups of symmetrically arranged mold main bodies, and the two groups of mold main bodies are fixed by fasteners; pouring cavities are formed in the opposite sides of the mold main bodies, tightened crepe paper is clamped between the two mold main bodies, two sample electrodes are symmetrically arranged in the two pouring cavities, and pouring intervals are formed between the opposite ends of the two sample electrodes and the crepe paper; the epoxy resin pouring material is vacuumized in the vacuum oven and then poured into the pouring cavity; and the mold poured with the epoxy resin pouring material is vacuumized in a vacuum oven. By utilizing the equipment disclosed by the invention, the stretching state of the crepe paper can be effectively controlled, the introduction of bubbles is reduced, a test sample with equivalent insulation characteristics with an actual epoxy impregnated paper sleeve is prepared, and a technical support is provided for accurately evaluating the related performance of an epoxy impregnated paper insulating material.

The invention discloses a cable crepe paper feeding device which is provided with a tower-shaped base, the bottom of the tower-shaped base is provided with a fixing hole site, a plurality of annular adjusting grooves are formed in the tower surface of the tower-shaped base, each adjusting groove is provided with a plurality of adjusting blocks capable of sliding on the adjusting groove, and the adjusting blocks are positioned on the adjusting grooves through fixing pieces such as bolts. And a paper guide hole for the crepe paper to pass through is formed in the adjusting block. The high-voltage stranding machine is matched with high-voltage stranding equipment for use, conductor strand blocks pass through the tower surface of the tower-shaped base and crepe paper is guided and fed through the paper guide holes and then fully wraps each strand of conductor during conductor splitting and wire core stranding in high-voltage cable production, so that the wrapping precision is high, the guide of the crepe paper is accurate and adjustable, the tape breakage rate of the crepe paper is reduced, and the waste rate of consumables is reduced; reliable roundness of the cable is ensured, the quality of high-voltage cable products is improved, and the first-pass yield of the high-voltage cable is improved.

A hollow composite filter stick with variable draw resistance relates to the technical field of cigarettes and comprises a filter element and a wrapping layer (1), the filter element comprises a plurality of cylindrical first filter element sections (2) and a plurality of cylindrical second filter element sections (3), the first filter element sections (2) are formed by spirally curling crepe paper from inside to outside, and the second filter element sections (3) are formed by spirally curling crepe paper from inside to outside. A cavity section (4) is arranged between the first filter element section (2) and the second filter element section (3) at an interval, the first filter element section (2), the cavity section (4) and the second filter element section (3) are arranged in sequence, and after the first filter element section (2), the cavity section (4) and the second filter element section (3) are cut into the filter tip, each section of the filter tip comprises one section of the first filter element section (2), one section of the cavity section (4) and one section of the second filter element section (3). The contact area between smoke and the surface of crepe paper can be reduced by pushing the paper filter stick at the near lip end inwards, and the suction resistance of the filter stick is reduced. And on the premise of ensuring tar adsorption, the smoking experience feeling is improved.

The invention relates to a preparation process of a thin high-flatness black paper coated grinding wheel mesh, which comprises the following steps of: firstly, taking a piece of glass fiber mesh cloth, soaking the glass fiber mesh cloth in a phenolic resin glue solution, and drying the glass fiber mesh cloth; secondly, coating glue is dipped on the surface of the glass fiber mesh cloth in a roller coating mode, the coating glue is prepared from white emulsion glue and pressure-sensitive glue, and the dipping amount is 10-12 g / m < 2 >; thirdly, black tissue paper or black crepe paper is compounded on the covering glue of the glass fiber mesh cloth, a solvent of the covering glue is dried through a drying cylinder, and the covering glue is pressed through a pressing roller and then rolled into a coiled material; and finally, the coiled material is unwound and slit, and the required thin high-flatness black paper coated grinding wheel mesh is obtained. When the grinding wheel mesh is prepared, the black tissue paper or the black crepe paper is adopted for compounding, the black tissue paper is lower in gram weight, under the condition that the environment humidity changes, the expansion and shrinkage stress of the black tissue paper is low, the influence on stretching or compression of the mesh is small, and the expansion and shrinkage stress of the crepe paper is almost completely eliminated after the crepe paper is subjected to crepe treatment.

The invention discloses a preparation method of a masking paper back adhesive capable of protecting a wall coating, which solves the problems that the existing low-viscosity back adhesive is unstable in adhesion and the high-viscosity back adhesive damages a wall by integrating a low-viscosity special curing adhesive (side A) and a high-viscosity cloth grain double-sided adhesive (side B) on two sides of a film-coated crepe paper base material. The preparation method comprises the steps of plant fiber crepe paper preparation, thin PET film covering, A / B face differential gluing and curing forming, and the prepared product has the stable pasting and coating protection functions and is suitable for various wall decoration scenes.

Method for producing creped paper characterised by feeding a creping machine (2) with a paper web (4) which has a dryness level between 70% and 95%, preferably between 80% and 90% and is extensible by at least 5% in the transverse direction CD.

The invention discloses a dry-type bushing made based on waterproof insulating crepe paper, which comprises a bushing base and a bushing shell, the bottom of the bushing shell is attached to the upper end of the bushing base, a connecting conductor is arranged in the middle of the bushing base in a penetrating manner, and the connecting conductor penetrates through the bushing shell and extends outwards; upper and lower ends of the connecting conductor are respectively in threaded connection with fixing nuts; a composite insulation assembly is detachably installed in the sleeve shell and arranged outside the connecting conductor in a sleeving mode, and the upper end and the lower end of the composite insulation assembly are connected with the inner top face of the sleeve shell and the upper surface of the sleeve base in a sealed mode respectively. A clamping mechanism used for pressing the composite insulation assembly in the radial direction and a limiting mechanism used for limiting the composite insulation assembly are arranged in the sleeve shell. The internal insulation structure is arranged in a detachable form, so that the internal insulation structure can be replaced after being used for a certain time, and the insulation effect of the device is ensured.

The invention belongs to the technical field of paper-based functional modified materials, and discloses semiconductor crepe paper which comprises a base material which is common plant fiber crepe paper with the original crepe form. According to the invention, the base material is common wood pulp and bamboo pulp crepe paper, special materials are not needed, the base material is convenient to buy and cheap, and the production and use cost is greatly reduced; complicated steps, namely simple operations such as drying, mixing, soaking and low-temperature curing, are avoided, production can be realized by slightly adjusting existing equipment in a factory, expensive new equipment does not need to be specially bought, and the method is suitable for large-scale production; on one hand, the conductivity of a semiconductor can be kept, and the requirements of transformer insulation and electronic element static prevention are just met; and on the other hand, the wrinkles are completely not lost, and can be attached to equipment or follow-up processing like common crepe paper, so that buffering performance is achieved. The conductive component permeates into fiber gaps and is cured, so that the conductive component is not easy to fall off, and the conductive effect is not suddenly good or bad when the conductive component is used; the crepe paper can be used as common crepe paper, can also be used as a semiconductor, can be directly used for an insulation structure of electrical equipment and electrostatic protection of electronic components, and does not need to be specially replaced with a material for electric conduction; the conductive capability is controlled within the range of a semiconductor, equipment short circuit caused by too strong conductivity like metal is avoided, the situation that common paper is completely non-conductive and has no effect is avoided, the conductive paper is more secure when being used on electronic and electrical equipment, normal operation of the equipment is not affected, and actual application and operation are facilitated.

This invention discloses an ultra-thin, highly water-resistant, biodegradable crepe paper mulch film and its preparation method, aiming to replace traditional plastic mulch film, solve the problem of agricultural mulch film pollution, and promote the development of organic agriculture. This paper mulch film consists of layers of topcoat and core pulp. The topcoat is mainly composed of corn starch, silicone water-resistant agent, and water (by weight, 5-10 parts, 2-6 parts, and 84-93 parts, respectively). The silicone water-resistant agent contains carboxyl groups, alcohol hydroxyl groups, and polysiloxane oxygen-containing functional groups, possessing both excellent water resistance and environmental friendliness. The basis weight of the topcoat is 2-3 g / m². The core pulp is made from 100% unbleached recycled fiber, with a basis weight of 30-38 g / m². The paper mulch film has a wrinkling rate of 10-20%. The paper mulch film has excellent technical indicators: thickness 1.5-2.5 mm / 16 ply, longitudinal elongation 6-15%, longitudinal tensile strength 12000-20000 mN, longitudinal wet strength 4000-8000 mN, water absorption 20-35 g / m² (3 layers for 60 seconds), and visible light transmittance 0.3-1.5%. Its low cost, combined with high water resistance, good elasticity and biodegradability, makes it an ideal upgrade solution for the agricultural mulch film industry.

The utility model relates to the technical field of sterilization tools, in particular to a disinfection basket three-dimensional mat which comprises a crepe paper bottom mat and a plurality of crepe paper side mats connected around the edge of the crepe paper bottom mat, and the crepe paper side mats can be folded into a vertical state along the connecting positions of the crepe paper bottom mat and the crepe paper side mats. And a protection groove is formed on the upper side of the crepe paper bottom pad. By means of the crepe paper bottom pad, the cushion layer effect can be achieved between the bottom of the disinfection basket and a sterilization packaging material, friction between the disinfection basket and the sterilization packaging material is reduced, meanwhile, buffering is provided for contact between the disinfection basket and a stainless steel sterilization frame, a stainless steel transfer trolley and a stainless steel loading frame, and the possibility of damage to the sterilization packaging material is reduced. Through the crepe paper side pad, the cushion layer effect can be achieved between the sterilization packaging material and the side face of the sterilization basket, and the situation that instruments in the sterilization basket penetrate through holes of the sterilization basket in the transportation process and pierce the sterilization packaging material is avoided.

The invention relates to a crepe paper rapid equal cutting device which comprises a mounting mechanism and a winding mechanism, the mounting mechanism comprises a first supporting seat and a mounting shaft detachably arranged on the first supporting seat, and the winding mechanism comprises a second supporting seat and a winding wheel disc rotatably arranged on the second supporting seat. And a positioning cut-off groove is formed in the circumferential surface of the winding wheel disc. During application, according to the required length of crepe paper, the winding wheel disc with the corresponding perimeter is used, then the crepe paper disc is arranged on the mounting shaft in a penetrating manner, then one end of the crepe paper is aligned with the positioning cut-off groove to be fixed on the winding wheel disc, according to the required fixed-length crepe paper number, the winding wheel disc is rotated by the preset number of turns, and the crepe paper is cut off at the positioning cut-off groove. By the adoption of the quick equal-dividing and cutting-off device for the crepe paper, multiple pieces of crepe paper with the basically consistent length can be quickly obtained, the cutting efficiency is high, and the production efficiency of transformers can be improved.

To provide a packaging material having excellent packaging processing suitability and air permeability and a method of manufacturing a packaging material.SOLUTION: A packaging material has a paper substrate including natural fibers and a heat seal layer provided on at least one side of the paper substrate, wherein the packaging material is characterized in that the paper substrate comprises crepe paper including a conifer pulp of 80% or more relative to the total amount of pulps and the conifer pulp has an average lumen ratio of 0.50 or more and 0.70 or less. Also, a method of manufacturing the packaging material is disclosed herein.SELECTED DRAWING: Figure 1

The system (1) for the manufacture of layered shaped bodies, comprising: at least one base layer (9); at least one coating layer (8a, 8b); movement means (23) configured to move the at least one base layer (9) and the at least one coating layer (8a, 8b), substantially facing overlapping and parallel to each other, along a line of movement (M); pressing means (2, 3) provided with at least a first pressing body (2), comprising at least a first shaping element (4), and with at least a second pressing body (3), comprising at least a second shaping element (5) having a complementary conformation with respect to the first shaping element (4), the pressing bodies (2, 3) being arranged on opposite sides of the line of movement (M) and being movable, at least one with respect to the other, between: at least one home configuration, wherein the at least one first shaping element (4) and the at least one second shaping element (5) are spaced apart from each other; and at least one work configuration, wherein the at least one first shaping element (4) and the at least one second shaping element (5) are pressed under pressure, enclosing the layers (8a, 8b, 9) with each other and coupling them, so as to make, at a shaping area (10), at least one layered shaped body (11); wherein: the base layer (9) is made of paper; the coating layer (8a, 8b) is made of paper of the crepe paper type.

A method for preparing an adhesive resin for use in a coating composition for a crepe paper manufacturing process that includes the steps of reacting a polycarboxylic acid or a derivative of a polycarboxylic acid with a polyamine to form a polyamidoamine intermediate; reacting a polyetheramine with an epihalohydrin to form a polyetheramine-epihalohydrin intermediate and reacting the polyamidoamine intermediate with the polyetheramine-epihalohydrin intermediate to form a polyamidoamine polyetheramine-epihalohydrin resin.

The utility model relates to a device for preparing an epoxy resin impregnated paper material high-frequency harmonic tolerance experiment sample, which comprises a plate-shaped electrode, a spherical electrode, and an upper cover, a mold cylinder and a bottom plate which are sequentially arranged from top to bottom, the plate-shaped electrode is arranged on the bottom plate, crepe paper is arranged on the upper side of the plate-shaped electrode, and the spherical electrode is arranged on the mold cylinder. A pressing and positioning part is arranged at the lower end of the mold cylinder, the edge of the crepe paper is pressed by the pressing and positioning part, a pouring hole, an exhaust hole and a threaded hole are formed in the upper cover, the upper end of a ball rod of the spherical electrode penetrates through the threaded hole and then is in threaded connection with a nut, and the edge of the upper cover is fixedly connected with the edge of the bottom plate through a connecting column. The device can control the distance between the spherical electrode and the plate-shaped electrode, can meet the requirements of subsequent experiments, solves the problem that the edge of the crepe paper is easy to curl, can ensure that the crepe paper is flat and is completely attached to the plate-shaped electrode, and can be dried and then subjected to vacuum pouring, so that the production efficiency is improved. Sample defects caused by bubbles generated during sample pouring can be avoided.

The utility model discloses a creping scraper holder for a crepe paper creping machine, which relates to the field of crepe paper, and comprises a support frame, a bidirectional motor is fixed on the outer wall of the side surface of the support frame, a ball screw is inserted into the inner wall of the side surface of the support frame, a screw nut is inserted into the outer wall of the ball screw, and the screw nut is fixed on the support frame. A supporting rod is installed on the side, close to the ball screw, of the inner wall of the side face of the supporting frame, a connecting block is installed on the outer wall of the lead screw nut, a connecting disc is fixed to the outer wall of the top of the connecting block, a hydraulic coupler is fixed to the outer wall of the top of the connecting disc, and a connecting shaft is installed on the outer wall of the top of the hydraulic coupler. A blade clamp is fixed to the outer wall of the top of the connecting shaft, and a scraper body is inserted into the inner wall of the blade clamp. The application range of the device can be enlarged, and the practicability of the device can be improved.

The invention discloses a high-temperature-resistant crepe paper pulp grinding device and a pulping method. The device comprises a pulping barrel, a grinding assembly and a gate valve assembly. The pulping barrel is provided with a feeding port, a grinding cavity and a storage cavity which are sequentially arranged in the vertical direction; the grinding assembly is arranged between the grinding cavity and the material storage cavity and defines an annular grinding channel, the two axial ends of the annular grinding channel are through and communicate with the grinding cavity and the material storage cavity correspondingly, and the material storage cavity is used for storing materials passing through the annular grinding channel; the at least two feeding holes are formed in the circumferential direction of the annular grinding channel at intervals; the gate valve assembly comprises a driving mechanism and at least two gate valve bodies, and the gate valve bodies correspond to the feeding ports in a one-to-one mode and are installed at the feeding ports in a sliding mode. And the driving mechanism is connected with each gate valve body and drives the at least two gate valve bodies to periodically alternate at the closing position and the opening position, so that at least one feeding port is in an opening state at any moment. According to the invention, the possibility of grinding blockage caused by excessive one-time blanking can be reduced.

The invention provides a pouring type semi-insulating structure and a manufacturing process thereof. The manufacturing process comprises the following steps: step 1, pre-drying semiconductor crepe paper and insulating crepe paper; 2, sanding the surface of the conductor, and wiping with alcohol; 3, wrapping a zero screen on the conductor by adopting semiconductor crepe paper; 4, wrapping an insulating layer on the zero screen by adopting insulating crepe paper; 5, sleeving the insulating layer, the feeding end flange terminal plate and the discharging end flange terminal plate with a heat-shrinkable tube; 6, baking the heat-shrinkable tube to enable the heat-shrinkable tube to shrink and hoop the bus; 7, wrapping the outer side of the heat-shrinkable tube with a contraction band; 8, epoxy resin is poured into the feeding through hole of the feeding end flange terminal plate; ninthly, after the epoxy resin is solidified, the contraction band is taken down; epoxy resin can be injected outside the conductor, a shielding layer is omitted, the production period is short, interphase short circuit risks are shielded, the production period is shortened, the cable is suitable for extra-urgent engineering projects, and operation safety is guaranteed as much as possible under the condition that the full-insulation period cannot meet the construction period.

A method for preparing an adhesive resin for use in a coating composition for a crepe paper manufacturing process that includes the steps of reacting a polycarboxylic acid or a derivative of a polycarboxylic acid with a polyamine to form a polyamidoamine intermediate; reacting a polyetheramine with an epihalohydrin to form a polyetheramine-epihalohydrin intermediate and reacting the polyamidoamine intermediate with the polyetheramine-epihalohydrin intermediate to form a polyamidoamine polyetheramine-epihalohydrin resin.

The invention belongs to the field of cables, and provides a seven-segment cable core structure and a production process method.The seven-segment cable core structure comprises seven fan-shaped segment strand block conductors which are twisted around the center of a cable to form a cable core with a circular cross section, every two adjacent fan-shaped segment strand block conductors are isolated through insulation crepe paper, and a wrapping copper strip covers the cable core; the cable comprises a cable core, a semi-conductive buffer strip, a flat aluminum sheath and an extruded semi-conductive layer, and the semi-conductive buffer strip is wrapped outside the cable core so as to provide a buffer space when insulation expands with heat and contracts with cold; the inner diameter of the flat aluminum sheath is tightly attached to the semi-conductive buffer strip, and the flat aluminum sheath and the extruded semi-conductive layer on the outermost layer of the cable can form two electrodes for detecting whether the cable sheath is damaged or not. Compared with the prior art, the power cable has the advantages that the wire cores of the 1000KV voltage class are adopted, and the seven-segment fan-shaped segment strand block conductor structure is utilized, so that the loss of electric energy in the line transmission process is effectively reduced, and the reliability and the stability of the cable in operation are improved.

The invention relates to the technical field of material science and engineering, in particular to a high-flexibility insulating crepe paper tube and a preparation technology.The dipping device comprises a supporting frame, a frame is fixedly connected to the top of the supporting frame, a vacuum pump is arranged at the bottom of the frame, and the suction end of the vacuum pump communicates with the inner bottom of the frame through a valve; the side face of the frame body is connected with a valve, and the other end of the valve is connected with a connecting pipe. Hydraulic cylinders are fixedly connected to the side walls of the front end and the rear end of the frame body, fixedly connected with the limiting assembly and used for adjusting the Y-axis height of the limiting assembly. The suction pump is controlled to extract air to enter the transmission cavity, then the air sequentially passes through the flow guide cavity to enter the space between the inner barrel and the elastic film, the elastic film is expanded, the elastic film is expanded and can make contact with the inner diameter surface of the paper tube, and when the interior of the paper tube is full of resin, the elastic film is expanded and can discharge the resin in the paper tube outwards; and then the suction pump is controlled to suck back air in the elastic film.

The invention relates to the technical field of electrical insulating materials, and particularly discloses electrical crepe paper as well as a preparation method and application thereof. According to the preparation method of the electrical crepe paper, through a combined process system of acid treatment, desalted water washing and magnesium salt treatment, the technical problems of high conductivity and low pH value of paper pulp after single acid treatment are effectively solved, terminal groups of cellulose molecular chains can be saturated, and the electrical property of the crepe paper is improved; the content of metal ions such as K < + >, Na < + > and Ca < 2 + > in the paper pulp can be obviously reduced (the removal effect of Na < + > is particularly outstanding); meanwhile, a combined process route of'hot rolling-primary wrinkling-drying-secondary wrinkling 'is innovatively adopted, so that the breakdown strength of the electrical crepe paper is synergistically improved, and the dielectric loss is reduced. According to the electrical crepe paper provided by the invention, breakdown voltage can be guided to be concentrated in a fiber compact area through microstructure regulation and control, so that the electrical performance is further optimized, and the technical bottleneck that high-performance crepe paper is difficult to reproduce in an existing crepe paper preparation process is solved.