333 results about "Kraft paper" patented technology

The invention relates to a method for manufacturing SCK paper having a basis weight in the range of 50 to 100 g / m2, wherein an optimal combination of nonrecycled BCP, BCTMP and recycled pulp obtained from release liner supercalendered Kraft paper is used to adjust the properties of the fiber furnish. While the use of BCTMP enables a product having a higher bulk, the recycled pulp component, which has high compatibility with the paper manufacturing process, enables to balance the manufacturing process and reduce the dimensional changes and shrinkage of the formed SCK paper. The combined presence of the BCTMP and the recycled pulp component in the fiber furnish improves the water removal from the fibers during the SCK paper manufacturing, while the presence of non-recycled BCP produced from softwood improves the formation and runnability of the paper web on the paper machine. This enables to produce SCK paper with improved sustainability, wherein the density may be controlled by means of the fiber furnish, without downgauging and without adverse effects to other paper properties, which would prevent the use of the SCK paper as substrate layer in a release liner.

In a release paper consisting of a backing paper layer coated on at least one side with PVOH and a silicone coating on at least one side, in which the backing paper layer coated on at least one side with PVOH consists of bleached kraft paper, containing at least up to 30 wt. % softwood and hardwood with a total freeness between 30 °SR and 42 °SR, preferably between 33 °SR and 38 °SR, and processing aids, and also a release layer which is applied at least on one side to the PVOH-coated side of the backing paper layer and consists of 0.5 to 5 g / m2 of a silicone, and wherein the release paper coated at least on one side with PVOH and silicone has a density between 850 and 990 kg / m3, preferably between 900 and 970 kg / m3, and a method for producing a release paper.

The invention relates to a method for manufacturing SCK paper having a basis weight in the range of 50 to 70 g / m2, wherein an optimal combination of BSKP and BCTMP is used to adjust the properties of the fiber furnish. In SCK papers with low basis weight the bulk of the formed paper web upon paper manufacturing may be controlled by means of the fiber furnish, without downgauging and without adverse effects to other paper properties, which would prevent the use of the SCK paper as substrate layer in a release liner. Thus SCK paper with exceptionally high share of BCTMP in the fiber furnish may be produced into the same thickness as was possible before for a conventional supercalendered kraft paper having a higher basis weight, while maintaining other quality characteristics of the paper sufficient for use as a substrate layer of an industrial release liner.

The present technology relates to fluff pulp having improved odor control and methods of making such fluff pulp. A fluff pulp is provided that includes bleached kraft fibers and a copper ion content of from about 0.2 ppm to about 50 ppm by weight of the bleached kraft fibers. The bleached kraft fibers include a length-weighted average fiber length of at least about 2 mm, a copper number of less than about 7, a carboxyl content of greater than about 3.5 meq / 100 grams; an ISO brightness of at least 80; and a viscosity of from about 2 cps to about 9 cps.

A kraft paper having a pulp according to ISO 536 of between 60 g / m2 and 120 g / m2, a density of between 680 kg / m3 and 720 kg / m3, and a tensile strength index in the machine direction according to ISO 1924-3 of between 79 kNm / kg and 98 kNm / kg, the kraft paper optionally having a coating and / or an auxiliary element on at least one side. The kraft paper is made of a pulp having an average pulp fibre length of 2.2 mm to 2.7 mm with a minimum pulp content of at least 96% wt. %; a pore volume of the uncoated kraft paper is between 200 μl / g and 220 ml / g; in the thickness direction of the paper, there are regions of different porosities; and at least one region has pores with a pore diameter of less than or equal to 0.3 μm. The invention also relates to a paper sack.

A truncated-cone-shaped container body for a truncated-cone-shaped drum for packaging has an upper edge delimiting an upper inlet mouth. The upper edge has a first folded portion projecting outwardly with respect to a lateral wall of the truncated-cone-shaped container body. The first folded portion is in one piece with the lateral wall. The first folded portion serves as a support for a lid and allows stackability of a plurality of drums one inside the other. The truncated-cone-shaped container body is made of kraft fibre. A truncated-cone-shaped packaging drum has the truncated-cone-shaped container body, a bottom, a lid, and a clamping collar for fastening the lid to the truncated-cone-shaped container body.

The utility model discloses a double-sided adhesive tape film tearing machine which comprises a machine frame, a letter cow leather roller is arranged on the top of the machine frame, a transparent adhesive roller is arranged on the top of the machine frame and located on the right side of the letter cow leather roller, and a waste adhesive pasting roller is arranged on the top of the machine frame and located on the right side of the transparent adhesive roller. A waste kraft paper roller is arranged on the top of the rack and located on the right side of the waste glue pasting roller, the upper end of the rack makes contact with a supporting rod, and a guide roller is hinged to the inner side of the supporting rod. Through the design of the guide roller, the movement of the adhesive tape can be guided, the support rod and the support sleeve can be fixed to opposite positions through the insertion of the convex block and the groove, the support rod can be driven to slide along the support sleeve when the handle is pulled, the insertion matching of the convex block and the groove at different positions can be realized, and the adhesive tape can be conveniently taken out. The relative positions of the supporting rod and the supporting sleeve can be conveniently adjusted and fixed, the use height of the guide roller can be conveniently and flexibly adjusted, and the tensioning force on the adhesive tape can be cooperatively adjusted.

The invention discloses a flame-retardant heat-insulating aluminum foil reinforced composite material and a preparation method thereof, and belongs to the technical field of aluminum foil reinforced composite materials. The flame-retardant heat-insulating aluminum foil reinforced composite material prepared by the invention sequentially comprises an aluminum foil layer, a reinforced net, kraft paper and a flame-retardant adhesive layer for bonding the aluminum foil layer and the reinforced net and bonding the reinforced net and the kraft paper from bottom to top, the flame-retardant adhesive layer comprises the following raw material components: a dianhydride monomer, an amine monomer and a heat-insulating filler; the amine monomer comprises 4, 4 '-diaminodiphenyl ether, flame-retardant diaminobenzimidazole and 4-aminobenzonitrile, the heat-insulating filler is prepared from hydroxyapatite nanowires, montmorillonite nanosheets and aminated polyvinyl alcohol, and the flame-retardant heat-insulating aluminum foil reinforced composite material prepared by the preparation method disclosed by the invention is relatively good in flame retardance and heat insulation.

The utility model discloses a high-strength tear-resistant composite aluminum foil paperboard, and belongs to the technical field of packaging materials, the high-strength tear-resistant composite aluminum foil paperboard comprises a composite aluminum foil paperboard main body, the composite aluminum foil paperboard main body comprises a base material layer, the base material layer adopts high-quality kraft paper as a raw material, and a stretch-resistant net is arranged on the upper surface of the base material layer; the high-quality kraft paper is selected as the raw material of the base material layer, good printing applicability and low cost can be guaranteed, the stretch-resistant net is arranged between the base material layer and the aluminum foil layer, and the base material layer, the aluminum foil layer and the stretch-resistant net are fixedly bonded together through the adhesive layer to form a whole. The tensile net formed by weaving the vertical cellulose filaments and the transverse cellulose filaments in a staggered mode has excellent mechanical performance due to the strong interaction force between molecules, so that the tearing strength and the overall mechanical stability of the composite aluminum foil paperboard main body can be greatly improved, the composite aluminum foil paperboard main body can bear large external force such as stretching, compression and bending, and the service life of the composite aluminum foil paperboard main body is prolonged. And firmness and durability are realized.

The present disclosure provides a heat-sealable paper product for use in overwrapping, wherein the heat-sealable paper product: —comprises a paper substrate being a machine-glazed (MG) kraft paper having a glazed side and a non-glazed side, wherein the glazed side of the MG kraft paper is coated with a heat-sealable coating; —has thickness of equal to or below 85 μm according to ISO 534:2011; —has a tensile energy absorption (TEA) in cross direction (CD) of at least 60 J / m2 according to ISO 1924-3:2011; and—has a burst strength of at least 170 kPa according to ISO 2758:2014. The present disclosure also provides a method of producing a heat-sealable paper product for use in overwrapping as well as a method of overwrapping an item in a heat-sealable paper product.

The utility model discloses a multi-layer kraft paper bag punching device, and relates to the technical field of packaging products. The device comprises a collecting box, a base, a support, a cross beam, a pressing plate and a trepanning cutter, the base is arranged on the collecting box in a clamped mode, and the L-shaped support is arranged above the base; two symmetrically-distributed air cylinders are fixed to the top face of the horizontal portion of the support, piston rods of the telescopic ends of the two air cylinders downwards penetrate through the horizontal portion of the support and jointly fix a cross beam, and a pressing plate is arranged below the cross beam. Trepanning knives which are distributed at equal intervals are screwed in the cross beam in a penetrating manner; an air compressor is fixed to the top of the support between the two air cylinders. Through the arrangement of the support, the base, the collecting box, the cross beam, the perforating cutter, the pressing plate, the sliding block and the clamping piece, the problems that waste scraps generated during perforating of kraft paper bags can be accumulated in the perforating cutter, an auxiliary pressing and flattening part is lacked during perforating of the kraft paper bags, and clamping parts matched with the kraft paper bags of different sizes are lacked are solved.

The utility model discloses an antistatic fireproof plate which comprises a fireproof core plate which is formed by gum dipping and pressing of a plurality of layers of kraft paper. The bottom paper layer is adhered to the surface of the rear side of the fireproof core plate; the groove is formed in the surface of the front side of the fireproof core plate and surrounds the edge; the groove is filled with the conductive silica gel, and the conductive silica gel has a radian protruding out of the surface of the fireproof core plate; the polyvinyl alcohol fiber cloth is adhered to the surface of the front side of the fireproof core plate. The grooves are formed in the front side surface of the protective core plate, the conductive silica gel is filled, continuous conduction is formed, the surface resistivity is reduced, the anti-static effect is effectively achieved, meanwhile, the outer side of the protective core plate is further covered with a layer of polyvinyl alcohol fiber cloth, the anti-static fireproof plate has the excellent anti-static performance, the anti-static effect of the surface of the fireproof plate can be greatly enhanced, and the application range is widened.

The utility model discloses a horizontal dip dryer for kraft paper production, which comprises a drying box and a glue box, the drying box is located on one side of the glue box, the drying box and the glue box are fixedly connected through a conveying pipe, a paper receiving roller is fixedly installed on one side of the drying box, a raw paper roll is fixedly installed on the surface of one side of the glue box, and a cover plate is installed on the upper surface of the glue box. An adjusting mechanism is arranged in the cover plate, a supporting plate is fixedly connected to the inner side surface of the drying box, a transverse plate is arranged above the supporting plate, a cleaning brush is fixedly connected to the upper surface of the transverse plate, a flow guide plate is fixedly connected to the surface of one side of the transverse plate, a drying mechanism is arranged on one side of the flow guide plate, and a flow guide groove is formed in the surface of one side of the flow guide plate; the diversion trench and the cleaning brush are staggered, and the upper end of the cleaning brush is located below one end of the conveying pipe. The problem that bumps appear in the drying process due to excessive glue after the existing raw paper is immersed in the glue is solved, so that the production quality of kraft paper is improved.

The utility model discloses a kind of quantitative pulp distribution devices for kraft paper preparation, belong to kraft paper preparation field.The quantitative pulp distribution device for kraft paper preparation of the utility model, including stirring frame, the one side of stirring frame upper end is provided with converging pipe, the both sides of converging pipe outer upper end are all provided with temporary storage barrel.The utility model solves the problem that the intermittent pulp distribution device for existing production color paper needs to spend a lot of time to realize mixing by rotating vane rotation when quantitative pulp distribution, mixing efficiency is lower, influence kraft paper preparation efficiency, the utility model is gathered after the material of temporary storage barrel is discharged by transmission pipe, the inside of converging pipe in material gathering position is temporarily rotated by stirring piece, gather the material falling in different positions, and make material fall on the rotation track of stirring paddle, can directly improve stirring mixing efficiency.

Gypsum fiberboard comprising a gypsum matrix, wherein, for reinforcement of the gypsum matrix, collected and recycled packaging of insulating materials comprising a kraft paper recyclate and / or a papyroline recyclate is added.

The invention discloses coarse-grain veneer white kraft paper for a high-end hand bag and an embossing process of the coarse-grain veneer white kraft paper, and relates to the technical field of white kraft paper, the coarse-grain veneer white kraft paper comprises a high-temperature hot press polish machine, a conveying roller, a white kraft paper body, a mounting frame, a smooth wheel, an embossing roller, a matching roller, an adjusting mechanism and a mounting mechanism, the bottom of the conveying roller is fixedly connected with the front end of the top of the high-temperature hot-press polishing machine, a mounting frame is fixedly connected to the left side of the back of the high-temperature hot-press polishing machine, the white kraft paper body is arranged, breakage of the white kraft paper body is prevented through multiple fiber layers, the folding resistance and tensile strength of the white kraft paper body are greatly improved, and meanwhile a hydrophobic barrier is formed to achieve water resistance; meanwhile, gradient density distribution is formed between the fiber layers, so that the coarse grain stereoscopic impression and the surface texture of the white kraft paper body are improved, the strength and durability of the white kraft paper body are enhanced, the binding force between fibers is optimized, and multiple breakthroughs of attractiveness, toughness and environmental protection are achieved.

The kraft paper cutting device comprises a base, a fixing frame is arranged at the top of the base, a reciprocating lead screw sliding table is fixedly arranged in the fixing frame, and tension adjusting assemblies used for fixing kraft paper are symmetrically arranged on the reciprocating lead screw sliding table. The cutting mechanism comprises two sets of symmetrical tool assemblies, each set is provided with a plurality of assemblies with different ruler tools, the tool assemblies can be switched to the operation position, paper is adsorbed through negative pressure, and a negative pressure sensor monitors the adsorption state. The circumferential angle adjusting assembly adjusts the cutting angle, the blade mechanism monitors the blade state during cutting, the tension adjusting assembly is triggered to relieve fixation when the blade state is abnormal, the device is suitable for kraft paper of various sizes, tools of different rulers can be rapidly switched, and the cutting angle can be accurately adjusted. And the stability of the paper is guaranteed through negative pressure adsorption and multiple monitoring, fixation is automatically relieved when the paper is abnormal, the cutting precision and safety are improved, and costume design and pattern making are efficiently assisted.

The present invention is configured by integrally laminating a chemical nonwoven fabric and (corrugated) kraft paper on both sides of a polyurethane foam sheet. This allows for not only reinforcing rigidity by increasing elongation through the (corrugated) kraft paper, but also satisfying the eco-friendliness required for ESG management by enabling the recycling of the paper material. Furthermore, the use of (corrugated) kraft paper allows for easy molding of engine room sound-absorbing materials with complex shapes, thereby improving sound absorption performance in high-frequency ranges of 2,000 Hz or higher through improved moldability and rigidity. Additionally, by using a polyolefin-based binder to attach the polyurethane foam sheet and (corrugated) kraft paper, the present invention can improve moldability, rigidity, and sound absorption performance by increasing the adhesive strength of the (corrugated) kraft paper through a polyolefin-based binder that is similar to the molding temperature conditions of the polyurethane foam.

The application provides a coated white surface kraft paper with a back surface not easy to drop hair and powder and a preparation method thereof, and relates to the field of coated white surface kraft paper. The preparation method of the coated white surface kraft paper with a back surface not easy to drop hair and powder comprises the following steps: preparing a coating liquid, primary sizing and secondary coating. The coating liquid is prepared from the following raw materials: heavy pulp calcium, kaolin, starch, butadiene styrene latex, polyvinyl alcohol, sodium carboxymethyl cellulose, water-based epoxy silane, ethylene glycol diglycidyl ether and amino silicone oil. The preparation method can ensure that OCC waste paper boxes are effectively recycled for the back surface of the coated white surface kraft paper, and can overcome the problems of hair and powder dropping and adhesive residue on the back surface of the coated white surface kraft paper, so as to avoid the secondary transfer of hair, powder and adhesive on the back surface of the coated white surface kraft paper to the front surface of the paper, and to ensure the printing effect and printing efficiency of the coated white surface kraft paper.

The present invention provides a method for recovering white liquor and a white liquor separation accelerator that makes it possible to reduce the amount of white liquor contained in the lime mud after recovering the white liquor from the emulsion, thereby enabling the separation and recovery of more white liquor from the lime mud. [Solution] The method for recovering white liquor includes a white liquor treatment step of recovering white liquor by separating the lime sludge from the emulsion, which is a mixture of white liquor and lime sludge generated during the manufacture of kraft pulp, by filtration, and further includes a separation enhancement step of adding a white liquor separation enhancer, which contains at least a nonionic surfactant and promotes the separation of lime sludge and white liquor in the emulsion, to the emulsion before or during the white liquor treatment step.

The utility model discloses a kind of moisture-proof composite corrugated paperboard, it is related to corrugated paperboard field, specifically a kind of moisture-proof composite corrugated paperboard, including bottom layer moisture-proof layer, inner layer corrugated core layer, intermediate barrier layer, outer layer corrugated core layer and surface layer moisture-proof layer from inside to outside are sequentially arranged;The bottom layer moisture-proof layer is PET film kraft paper, the surface layer moisture-proof layer is PE film kraft paper, the intermediate barrier layer is aluminum foil composite paper, the inner layer corrugated core layer is melamine resin modified corrugated paper, the utility model solves the current corrugated paperboard surface using coating single waterproof coating or using single layer plastic film film coating, the moisture-proof effect of this single coating processing mode is limited, and easily failure due to abrasion;Although single layer film can block part liquid water, it is difficult to solve water vapor penetration problem, and interlayer is mostly starch adhesive, swelling peeling after meeting water, cannot satisfy the long-term use demand of high humidity environment problem.

The utility model discloses a kind of paper sleeves for preventing metal coiled material from collapsing, comprising: main body cylinder, by multiple layers high-strength kraft paper adhesion;Radial reinforcement structure, is set to one end of the main body cylinder End, and it is distributed along circumference direction;Axial stiffener, along the axial extension of the main body cylinder, and it is set to the wall of the main body cylinder;Waterproof barrier layer, is set to the outer surface of the main body cylinder;Buffer layer, is set to the inner wall of the main body cylinder, the utility model relates to paper sleeve technical field.The paper sleeve for preventing metal coiled material from collapsing, radial compression strength is greatly promoted, can effectively resist the weight and external impact of heavy coiled material, the waterproof barrier layer of outer surface makes paper sleeve have waterproof capacity, effectively prevent inner circle indentation, scratch and other surface defects, improve the finished product quality of coiled material, embedded reinforcing ring or annular protruding portion is integrated with main body cylinder, stress is uniform, there is no risk of loosening and falling off.

The utility model discloses a novel packaging carton, and aims to provide a novel packaging carton which is strong in protection performance and high in stability, the novel packaging carton is characterized by comprising a carton body structure formed by folding and splicing paperboards and a carton cover matched with the carton body structure, and the novel packaging carton is characterized in that the paperboards adopt at least three layers of composite structures; the outer layer is made of high-strength craft paper, the middle layer is made of corrugated paper, the inner layer is made of moisture-proof paper, the box cover is provided with a protection assembly, the protection assembly comprises an elastic protection pad and at least two elastic supporting strips supporting the elastic protection pad, and the elastic supporting strips are made of rubber and are of a honeycomb-shaped supporting structure. The length of the box cover can be adjusted according to the width in the box cover, buckles are arranged at the two ends of the box cover, and clamping grooves fixedly connected with the buckles are formed in the edges of the two sides in the box cover. The carton packaging machine is suitable for the technical field of carton packaging.

The invention discloses multifunctional composite kraft paper and a preparation device, and the multifunctional kraft paper comprises a base material layer which is used as a supporting main body; the aromatic layer is fixed on one surface of the base material layer in a coating manner, fine and dense micropores are distributed in the base material layer in a staggered manner, and the aromatic layer permeates into the micropores and forms mechanical interlocking with the base material layer; the flame-retardant layer is positioned on one surface, deviating from the aromatic layer, of the base material layer and is fixedly connected with the base material layer in a thermocompression bonding fixing manner; the anti-static layer is located on the side, away from the base material layer, of the flame-retardant layer and is fixedly connected with the flame-retardant layer in a bonding mode, various layer structures are matched with one another, the function of kraft paper can be increased, and the connection strength between different functional layers is improved by adding an interlocking structure.

The invention relates to a packing belt and a preparation method thereof, the packing belt comprises a matrix layer, a bonding layer and a protective layer; the base body layer is formed by pressing four or five layers of kraft paper, and bonding layers are arranged on a first surface of the base body layer and a second surface opposite to the first surface; a protective layer is arranged on the surface, far away from the base body layer, of the bonding layer. On one hand, the hardness and tensile strength of the packing belt can be improved, so that the passing ability of the packing belt in the packing process is better, on the other hand, the double-sided adhesion function of the packing belt can be achieved, and the packing requirements of different packed objects can be met; and the packing belt prepared by adopting the preparation method of the packing belt can be recycled after being used, so that full utilization of resources is facilitated.

The application discloses a paper sheet removing device and method in a tobacco stem packaging box unpacking process, which comprises a mechanical arm, a visual identification module, a paper taking mechanism, a paper removing mechanism and a paper storing mechanism; the visual identification module is arranged at a fixed position on the mechanical arm or outside, and a camera of the visual identification module is arranged correspondingly to an unpacking station for identifying kraft paper; the paper taking mechanism comprises a sticking head fixed to a moving end of the mechanical arm; the paper removing mechanism comprises an inclined slope, a plurality of air suction holes are arranged on a surface of the slope, and an air suction channel and a channel switch are arranged on a back surface of the slope; and the paper storing mechanism comprises a paper storing frame connected to a bottom end of the slope. The application solves the problem that kraft paper easily causes paper jam in the folding device in the current work, collects the kraft paper in the unpacking process in time, ensures unmanned operation of the process, and improves the automation efficiency.

It can be stored upright in a cylindrical shape when in use, sealed tightly after use, and stored flat and stacked before use. [Solution] The device comprises a front sheet A and a back sheet B, a bottom sheet C positioned between the lower parts of the front and back sheets, and a resin chuck member 4. The front and back sheets are joined in three layers: an inner-side fused resin film LL, an intermediate aluminum vapor-deposited film AP, and a surface-side kraft paper K. The bottom sheet is joined in three layers, sandwiching an aluminum foil AF between two roughly rectangular fused resin films and resin films, forming a fold 5 in the center and folding it in half with the fused resin film on the outside. The lower and bottom edges of the left and right side edges of the front and back sheets are fused to the left and right side edges and bottom edges of the fused resin film of the folded bottom sheet, and the upper parts of the left and right side edges are fused to each other.

The invention relates to the technical field of paper, in particular to white kraft paper with ultrahigh folding resistance and a preparation method of the white kraft paper. The method comprises the steps that bleached softwood and hardwood pulp are mixed and then shunted, part of pulp is oxidized through a TEMPO / NaBr / NaClO system and subjected to high-pressure homogenization treatment to obtain nanocellulose, and then the nanocellulose is compounded with base pulp; a xylan-chitosan interface reinforcing agent I and a chitosan-dihydrocaffeic acid-polyethylene glycol diglycidyl ether interface reinforcing agent II are prepared at the same time; the composite paper pulp, a reinforcing agent, cationic starch and other auxiliaries are sequentially mixed and then formed, and squeezing, steam drying and heat aftertreatment at 120-125 DEG C are carried out. The obtained kraft paper remarkably improves the folding resistance number through the synergistic effect of a multi-scale fiber network and interface reinforcement, has high strength, high flexibility and excellent whiteness, and is suitable for a high-frequency folding packaging scene.

The invention relates to a method for operating an installation for producing kraft paper, said installation comprising a compacting device (21) for compacting a fibrous web, in particular a Clupak device, wherein - the compacting device (21) has a circulating cloth (26), a pressing bar (33), a wrap-around roller (34), a tensioning roller (32), a counter roller (28) and preferably a cloth drive roller (31), - the compacting device (21) can be operated in a compacting mode in which the circulating cloth (26) is pressed by the pressing bar (33) in the direction of the counter roller (28) and wraps around the counter roller (28) by a wrap-around angle (35), - in the compacting mode, a compacting gap (30) is formed between the cloth (26) and the counter roller (28), said compacting gap being designed such that the fibrous web is conveyed through the compacting gap at a production speed and is thereby compacted in the machine running direction (1), and - the compacting device (21) can be operated in an emergency running mode in which the pressing bar (33) is retracted in comparison to the compacting mode such that a distance is formed between the cloth (26) and the counter roller (28).

The utility model relates to paper processing equipment technical field discloses a kind of processing equipment for high-temperature-resistant waterproof wrapping paper production, including rack, and the side of rack is equipped with feed inlet, and feed inlet is used to high-temperature-resistant waterproof wrapping paper into the inboard of rack;Two support plates are fixed in the inner wall of rack, and two groups of rotating rollers are rotatably connected between rack and support plate, and rotating roller is used to flatten high-temperature-resistant waterproof wrapping paper;Rack top is equipped with heating assembly, and heating assembly is used to dry high-temperature-resistant waterproof wrapping paper;Heating assembly side is equipped with connecting assembly, air is heated by electric heating wire, and hot air is blown out using fan, and several air outlets on first air outlet pipe are evenly blown to the two sides of raw material, to ensure that drying process is uniform, can quickly and effectively dry treatment to high-temperature-resistant waterproof wrapping paper kraft paper raw material, remove moisture in paper, improve production efficiency.