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197 results about "Crêpe paper" patented technology

Crêpe paper is tissue paper that has been coated with sizing (a glue-like substance). It can then be creased in a way similar to party streamers to create gathers, giving it a crinkly texture like that of crêpe. This creasing process is called creping or crêping.

Method for producing paper towel

The invention relates to a manufacturing method of a crepe paper product. A method for producing a paper towel comprises the following steps of: selecting 70-80 % of bleached softwood pulp and 20-30 % of straw pulp as raw materials; pulping the pulp by using a pulper, after beating the pulp by using a disc mill and adding auxiliary materials of an expanding agent, a softening agent and a wet strength agent to the pulp, molding, dehydrating and squeezing the pulp by using a Harper fourdrinier system; creping a wet paper sheet in a creping cylinder when the dryness of the wet paper sheet is 30-45 %, wherein an angle between a creping knife and the tangential line of a cylinder surface is 20-30 degrees, the cutting edge angle of a scraping knife sticking to the cylinder surface is 60-85 degrees, and the speed ratio of the creping cylinder and a heating cylinder is 1.15-1.18:1; and then drying the wet paper sheet by using the heating cylinder; and winding, rewinding and slicing the paper sheet so as to obtain a finished product. The method for producing the paper towel, provided by the invention, has the advantages as follows: through fiber variety and proportion selection and through the adoption of a wet creping process, the paper towel are produced; and the produced the paper towel has the advantages of tensile strength and proper air permeability; and the strength, wet strength, hydrophobicity, air permeability, flexibility and the like of the paper towel all reach higher standards; therefore, high quality and low cost are achieved.
Owner:QUANZHOU HUAXIANG PAPER IND

Pyemotes spraying structure as well as manufacturing method and release device thereof

InactiveCN101911926ASolve the problem of biological controlImprove breeding efficiencyAnimal huntingForest industryCrêpe paper
The invention particularly discloses a pyemotes spraying structure as well as a manufacturing method and a release device thereof for solving the problem that the traditional pyemotes can not be used for biologically preventing and controlling pests with great population density. The manufacturing method of the pyemotes spraying structure comprises the following steps of: (a) breeding pyemotes to obtain pyemotes physogastry bodies and offspring adult pyemotes; (b) making foamed plastics or gauze or crepe paper into sheets, or making a cotton thread into a strip as a spraying carrier; and (c) crawling the spraying carrier with the offspring adult pyemotes, or sticking the pyemotes physogastry bodies to the glued surface of the spraying carrier to obtain the spraying structure. The pyemotes not only can be applied to the prevention and control of small stem boring pests, but also can be applied to the prevention and control of piercing and sucking pests, leaf-eating pests and the like in the fields of agriculture, parks, forestry and the like. The application range of the pyemotes is greatly expanded, various new alternative hosts are simultaneously used for breeding the pyemotes, so that the breeding efficiency of pyemotes is greatly improved, and the breeding cost is greatly reduced.
Owner:段东红 +2

Model coil of interturn insulation test of oil-immersed power transformer and manufacturing method of model coil

ActiveCN104777406AEffective analog characteristicsEffectively simulate the development process of electrical and thermal agingTesting dielectric strengthTransformers/inductances coils/windings/connectionsTransformerEllipse
The invention relates to a model coil of an interturn insulation test of an oil-immersed power transformer and a winding method of the model coil. Specification parameters of the coil and a category of insulation paper are the same as those of the transformer. The coil is divided into an upper cake and a lower cake, wherein each cake is subjected to parallel winding by two paper wrapped wires A and B; two first tangling positions of a connecting part of the two cakes are wrapped with at least six layers of insulation paper; the two first tangling positions are located on an inner ring of the coil; a distance between the two first tangling positions is half perimeter of a lead wire of the inner ring; the head end and the tail end of each paper wrapped wire are connected together; the two paper wrapped wires serve as a high-voltage outgoing wire and a low-voltage outgoing wire respectively; an ellipse is defined by four leading-out terminals of the paper wrapped wires; the high-voltage outgoing wire and the low-voltage outgoing wire of the coil are arranged at the two ends of a long axis respectively; a short axis is coincided with a straight line formed by the two first tangling positions of the two paper wrapped wires and is equal to the diameter length of an excircle of the coil; and each of the paper wrapped wires from tangent points to end points of the leading-out terminals is additionally wrapped with at least six layers of crepe paper to reinforce insulation. The coil can effectively simulate breakdown characteristics of an interturn oil paper compound insulation system and a development process of electrical aging and thermal aging under a working condition of the large transformer, and is simple to manufacture.
Owner:ELECTRIC POWER RES INST OF GUANGDONG POWER GRID

Novel valve side wire-outlet structure for converter transformer

The invention relates to a novel valve side wire-outlet structure for a converter transformer, and belongs to the technical field of an extra-high voltage converter transformer. According to the technical scheme, multiple layers of insulating paper sleeves and corrugated boards are arranged on the exterior of an aluminum pipe in the wire outlet; the insulating paper sleeves in each layer are arranged from inner to outer in a stepped and overlapped manner; the lengths of the insulating paper sleeves in the inner layer are greater than that of the insulating paper sleeves in the outer layer; the corrugated boards are arranged between adjacent two layers of the insulating paper sleeves; the lengths of the corrugated boards are greater than that of the insulating paper sleeves in the upper layer and less than that of the insulating paper sleeves in the lower layer; flat paper boards (2) are arranged in the junctions of the insulating paper sleeves; the insulating paper sleeves and the corrugated boards on the exterior of the aluminum pipe are gradually thinned to be converted into a crepe paper (1) structure in a transitional manner; the exterior of the aluminum pipe far from the wire outlet is wrapped with the crepe paper (1); the crepe paper wraps for insulation until the flat paper boards (2) are wrapped, and then the crepe paper continuously wraps for insulation until the insulating paper sleeves in the outermost layer are wrapped. The novel valve side wire-outlet structure has the positive effects that the novel valve side wire-outlet structure is reasonable in structure, easy to implement, and capable of effectively relieving tension supply of valve side leads and capable of promoting the rapid development of the direct current power transmission and transformation industries.
Owner:BAODING TIANWEI BAOBIAN ELECTRICAL

Oversized-section hollow corrugated split conductor

The invention discloses an oversized-section hollow corrugated split conductor, which is of a combined type hollow segmentation conductor structure. The center of the conductor is combined by multiple layers of conductor single-line layers; conductor strand block layers integrated by a plurality of corrugated conductor strand blocks are arranged out of the conductor single-line layers; insulated crepe paper is arranged between the conductor strand block layers and the self-supporting external conductor single-line layers. The Z-shaped or corrugated conductor single lines are of a stable self-supporting structure, no gaps are formed between the conductor single lines, and therefore, requirements on tighter connection between the conductor single lines can be met without compression. Strength is guaranteed by the hollow self-supporting structure, a metal spiral pipe, a drawing copper pipe or a supporting pipe made of plastic and the like are replaced a small gap exists between the hollow self-supporting structure and segmentation conductor strand blocks, and the flexibility of the whole conductor is not lowered. According to the hollow structure, the section of the conductor is utilized to a maximum degree, and adverse effects brought by a 'skin effect' are lowered to a larger extent.
Owner:WUXI JIANGNAN CABLE

Suspension end insulation structure with transformer coil inserted with shielding wire

The invention discloses a suspension end insulation structure with a transformer coil inserted with a shielding wire. The suspension end insulation structure comprises a coil current carrying wire and a coil shielding wire distributed at an interval. An end part of the coil shielding wire is connected to a paperboard strip; aluminum metallization crepe papers are covered at outer sides of a suspension end of the coil shielding wire and the contact part of the coil shielding wire and the paperboard strip; a Denison paper is covered at the outer side of the paperboard strip; and the suspension end of the coil shielding wire is in a round corner structure. The invention has the advantages that an existing shielding suspension end which is not treated or is subjected to simple wrapping is changed into a standard insulation structure, so that a local discharge initial voltage at the suspension end is effectively increased, simultaneously the electric field intensity of two adjacent oil conduits at the shielding suspension end and a horizontal oil conduit size between two adjacent shielding suspension ends are reduced; the service life of the transformer is prolonged; and the production cost is lowered.
Owner:SHANDONG DACHI ELECTRIC
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