506 results about "Kraft paper" patented technology

The present invention discloses a tensile and wear-resistant washed kraft paper and its preparation process, which relates to the technical field of kraft paper. The process includes the following steps: Step 1: Add color paste, waterborne acrylic resin, preservative, reinforcing agent, softening agent, curing agent, and waterproofing agent into a solvent in sequence and stir evenly to obtain a sizing slurry; Step 2: Coat the sizing slurry on the base paper, and successively perform extrusion, ultraviolet light irradiation, first drying, ironing, and second drying to obtain the tensile and wear-resistant washed kraft paper. In this application, by preparing specific reinforcing agent and waterproofing agent and introducing them into the sizing slurry for sizing, the interfacial action between the sizing slurry and the base paper is effectively improved, thereby improving the tensile and wear resistance of the washed kraft paper while enhancing the flame retardant performance; it can achieve the purpose of replacing plastic, leather, and cloth with paper.

The invention relates to the technical field of spunbond non-woven fabric manufacturing, in particular to a low-cost recyclable spunbond non-woven fabric manufacturing method capable of replacing traditional kraft paper, and the method comprises the steps of raw material preparation, melt extrusion, spinning web forming, hot-press shaping, cooling and trimming, post-processing, coiling and forming and the like. Raw materials comprise polypropylene particles, degradable master batches and recycled spunbond non-woven fabric fragments, the recycled fragments are subjected to surface modification treatment, and the degradable master batches contain polylactic acid, a starch-based degradation agent and other components. The non-woven fabric is quantified to 80-120 g / m < 2 > by optimizing processes such as a barrier type screw, infrared preheating and laser trimming and cooperating with water-repellent and antistatic post-treatment, the mechanical properties such as tensile strength, tearing strength and folding resistance are superior to those of traditional kraft paper, the non-woven fabric can be recycled for at least three times, and the degradation period is controllable; the method realizes closed-loop utilization of raw materials, reduces cost and energy consumption, expands application in the fields of packaging, agriculture and the like, and has remarkable economic and environmental benefits.

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.

According to the wet kraft paper box sealing machine, an upper box sealing device and a lower box sealing device each comprise a paper frame and a paper pressing guide assembly, a wet kraft paper roll is arranged on each paper frame, and wet kraft paper is guided to a wet kraft paper humidifying and heating device through a paper feeding guide part; the wet kraft paper passes through the wet kraft paper humidifying and heating device and waits for packaging boxes at outlets of the upper box sealing device and the lower box sealing device, and a wet kraft paper pressurizing part is arranged above a paper inlet of the wet kraft paper humidifying and heating device; water inlet and outlet holes of the two wet kraft paper humidifying and heating devices are connected into a water storage tank located on the rack at the lower end of the roller shaft layer through pipelines, and paper pressing guide assemblies are arranged on the front side and the rear side of the upper box sealing device and the front side and the rear side of the lower box sealing device correspondingly and located on the rear sides of the corresponding wet kraft paper. The device has the advantages that the cover plate is pressurized through the electromagnetic driving part to further pressurize the wet kraft paper, so that the wet kraft paper works smoothly; the wet kraft paper humidifying and heating device heats and humidifies the wet kraft paper to improve viscosity and facilitate box sealing.

Systems and methods are described for fiber-based, plastic-free products for storage of emulsion food products. In some embodiments, a coating is applied to the product, such as a coating comprising efficacious proportions of xylitol, citric acid, water, microfibrillated cellulose, and polyvinyl alcohol. A slurry is used to fabricate the product includes various proportions of fiber blends (e.g., combinations of bleached softwood, bleached hardwood, kraft paper, and / or virgin fiber), AKD, starch, a stearate (e.g., Magnesium or Calcium Stearate), a defoamer, and microfibrillated cellulose.

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 invention discloses a waste collecting device after surface-mounted circuit board processing, and relates to the field of surface-mounted circuit boards, the waste collecting device comprises a processing table and a frame, the top of the frame is provided with a driving assembly, the output end of the driving assembly is connected with a sliding plate, and the bottom of the sliding plate is slidably provided with a solder paste head; a containing plate is arranged in the machining table, a fixing plate is arranged at the bottom of the containing plate of the machining table, a special-shaped groove is formed in the fixing plate, clamping plates are symmetrically arranged on the two sides of the containing plate, and a limiting block is arranged on one side of a sliding plate. A clamping plate slides downwards under the action of a special-shaped groove, so that kraft paper and a circuit board are limited by the clamping plate, an electric sliding rail continuously drives a placing plate to slide towards one side subsequently, limiting of the kraft paper is automatically relieved, and a scraper on a reciprocating screw rod can slide back and forth conveniently under meshing of a toothed rod and a fixed gear, so that the kraft paper is prevented from being scraped. And the solder paste on the kraft paper can be uniformly smeared.

Removable watermark device for traditional manual paper mold. The device is a fabric, carrying the excess thickness of the watermark, to be stretched between a screen and a cover. This simple device allows the same mold to sequentially produce series of sheets of paper with different watermarks. Figure for the abstract: Figure 5

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 utility model discloses a high-sound-insulation fireproof decorative plate, which comprises a surface paper layer, the outer kraft paper layer is bonded and laminated on the surface of the surface paper layer; the high-sound-insulation fireproof core board layer is arranged on the surface of the outer kraft paper layer and comprises a middle magnesium oxysulfate board layer and fireproof board layers located on the two sides, and the middle magnesium oxysulfate board layer is provided with a plurality of sound absorption inner cavity holes; the polyester film layer is adhered to the surface of the high-sound-insulation core plate layer; the inner kraft paper layer is arranged on the surface of the polyester film layer; the bonding glue layer is coated on the surface of the inner kraft paper layer in a roller coating manner. The middle magnesium oxysulfate board layer and the fireproof board layer form the high-sound-insulation fireproof core board layer, sound absorption is achieved through the sound absorption inner cavity holes, the polyester film layer, the inner kraft paper layer and the outer kraft paper layer improve strength, finally, bonding and fixing are achieved through the bonding glue layer, exterior decoration is achieved through the surface paper layer, and abrasion resistance is improved.

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.

1. The name of the design product: kraft paper toy (five pavilions bridge model). 2. The use of the design product: for toys. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective drawing.

The invention discloses fluoride-free bio-based membrane transfer oil-proof paper as well as a preparation method and application thereof, and belongs to the technical field of oil-proof paper. The preparation method comprises the following steps: adding Tempo oxidized nanocellulose gel into water, dispersing the Tempo oxidized nanocellulose gel into a uniform solution through a high-speed dispersion machine, and adding hyaluronic acid into water to obtain a hyaluronic acid solution; mixing the Tempo oxidized nanocellulose solution and a hyaluronic acid solution according to a mass ratio of 7: 3-3: 7, casting the mixture into a plastic plate, and then evaporating the solvent to form a thin film; and soaking the obtained film in a calcium chloride solution, washing with deionized water, transferring to kraft paper, and drying to obtain the fluoride-free bio-based film transfer oil-proof paper. The fluoride-free bio-based membrane transfer oil-proof paper provided by the invention has excellent oil-proof performance, the oil-proof grade reaches 12 grade, and no edible oil permeates 30 minutes after edible oil at 230 + / -5 DEG C is dripped into the fluoride-free bio-based membrane transfer oil-proof paper; the raw materials do not contain fluorine and are derived from a bio-based material, so that the material is biodegradable and environment-friendly.

The utility model discloses a kraft paper board labeling and conveying device which comprises an installation bottom plate and a kraft paper board body, a material storage box is arranged on the upper surface of the installation bottom plate through a plurality of sets of supporting legs, and a labeling box is arranged on the upper surface of the installation bottom plate and located on the side face of the material storage box. A discharging groove corresponding to the kraft paper board body is formed in the side, close to the labeling box, of the storage box. A pushing assembly used for driving a set of kraft paper board bodies to move towards the discharging groove is arranged on the upper surface of the mounting bottom plate and located below the storage box, a servo motor drives a driving rotary disc to rotate so as to drive a belt to rotate along the outer arc faces of a driven rotary disc and the driving rotary disc, and the belt drives a connecting plate and a pushing column to rotate. And the pushing columns are clamped into the moving grooves to push the kraft paper board bodies to the discharging grooves, and the discharging grooves correspond to the kraft paper board bodies, so that it is guaranteed that only one set of kraft paper board bodies are pushed out each time, and the phenomenon of missing labeling is avoided while the labeling efficiency is improved.

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.

1. Name of the design product: Wine bottle (wine bottle with Mengboyuan ancient-burning kraft paper label and cap). 2. Use of the design product: A container for holding wine. 3. Design key points of the design product: The combination of shape, pattern and color. 4. The picture or photograph that best shows the design key points: Perspective view. 5. The design for which protection is claimed includes color.