619 results about "Kraft paper" patented technology

The invention provides a kraft paper wet water full-automatic corner and edge box sealing machine which comprises a rack, a conveying belt assembly, a corner and edge unit and a shaping assembly, through four specially-designed tape pasting mechanisms, automatic water dipping, accurate length determining, automatic cutting and pasting of water-based adhesive tape are achieved, and the production efficiency is improved. The automatic edge banding device is simple in structure and matched with the shaping mechanism to ensure that the adhesive tape is firmly attached to the four linear edges of the carton, efficient and synchronous four-corner automatic edge banding is achieved, in addition, the device can adapt to cartons of different sizes through the design of the height adjusting mechanism and the horizontal adjusting mechanism, and universality and flexibility are improved. According to the four-corner edge sealing machine, the problems of application of environment-friendly materials and packaging of four corners of a carton in the prior art are solved, and an efficient, reliable and low-cost carton four-corner edge sealing scheme is provided for the industry through unique design and technical improvement of the four-corner edge sealing machine.

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 discloses a preparation method of a CoCrNi medium-entropy alloy and Q235B steel explosive welding composite board, which comprises the following steps of: annealing a CoCrNi medium-entropy alloy board, sequentially laying sandy soil, an anvil, a Q235B hot-rolled steel plate, a support column, a medium-entropy alloy board, kraft paper and explosive from bottom to top on an explosion field, and performing explosive welding to obtain the CoCrNi medium-entropy alloy and Q235B steel explosive welding composite board. The detonation velocity of the explosive ranges from 2500 m / s to 3000 m / s, and the brisance of the explosive ranges from 18 mm to 22 mm. According to the method, metallurgical bonding of the CoCrNi medium entropy alloy and the Q235B steel plate is achieved, the interface bonding rate of the obtained composite plate is larger than 99.2%, the yield strength is larger than 420 MPa, the tensile strength is larger than 500 MPa, the percentage elongation after fracture is larger than 35%, and the interface shear strength is larger than 200 MPa. The method is simple in process and suitable for industrial production.

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.

The invention discloses dialdehyde starch waterproof and oilproof packaging paper and a preparation method thereof, and belongs to the technical field of packaging materials. The tapioca starch waterproof and oil-proof paper comprises raw paper, the surface of the raw paper is coated with a dialdehyde starch waterproof and oil-proof layer, and the dialdehyde starch waterproof and oil-proof layer is prepared by modifying tapioca starch through an oxidizing agent. After the prepared coating is applied to the surface of kraft paper, the coating has excellent waterproof and oil-proof performance, the situation that when the coating is in contact with food with large moisture and oil content, the moisture and the oil content can soak a package, consequently, the package is damaged, and the food package is unstable can be avoided, and the coating has good barrier performance and can be widely applied to the field of food packaging. Meanwhile, the material disclosed by the invention has good biodegradability, can be naturally degraded in the environment, and is more environment-friendly.

The utility model relates to the field of foamed sponge processing and discloses foamed sponge forming equipment which comprises a forming device, a placement groove is formed in the middle of the top end of the forming device, kraft paper is placed in the placement groove, a fixing frame is fixedly installed at an opening of the top end of the forming device, and fixing grooves are symmetrically formed in the inner wall, close to the corners of the forming device, of the fixing frame. A movable plate is movably installed in the fixing frame and extends into the fixing groove, springs are installed on the two side edges of one end of the movable plate and located in the fixing groove, and a connecting pull rod is welded to the middle of one end of the movable plate and penetrates through the fixing frame; the kraft paper is fixed to the inner wall of the containing groove through cooperation of the multiple limiting pressing plates and the movable clamping plates, so that the effect of conveniently keeping the kraft paper in the containing groove to be stably placed is achieved, and the attaching degree between the kraft paper and the inner wall of the containing groove is improved; the problem that the surface of the foamed sponge is uneven after being formed due to wrinkles of kraft paper is solved.

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.

The utility model discloses 3d honeycomb packing paper and box packing paper thereof, and relates to the field of packing paper design, the 3d honeycomb packing paper comprises a plurality of paper strips, and the plurality of paper strips are arranged with the same length and the same width; a plurality of adhesive layers are arranged on the two sides of the paper strip respectively, the adhesive layers are arranged in an equidistant array mode, and the adhesive layers on the two sides of the paper strip are arranged in a staggered mode. When the multiple paper strips are stretched in the vertical direction of the side faces, the paper strips and the adhesive layers on the two sides are stretched to form a honeycomb-shaped structure. When the paper tape is stretched, the paper tape can be stretched and deformed from the adhesive layers which are arranged in a staggered mode, the paper tape can form a honeycomb-shaped structure after being completely stretched, and due to the fact that the honeycomb-shaped structure is high in stability, the paper tape can be stretched in the stretching direction and does not deform in other directions; compared with kraft paper, the paper strip is lower in preparation cost, the strength of the 3d honeycomb packaging paper can be guaranteed by setting the corresponding width of the paper strip, and the protection effect is better.

The utility model discloses a limiting drawing display gift box, relates to the technical field of packaging boxes, and aims to solve the problems that in the prior art, a conventional packaging box for tea, wine, various hardcover gifts and the like is inconvenient to draw and display and poor in use effect. The drawing box body is connected to the interior of the outer packaging box body in a sliding mode, a hidden limiting clamp used for limiting the drawing box body is arranged in the outer packaging box body, a drawing box base is arranged on one side of the drawing box body, and the peripheral size of the drawing box base is the same as that of the outer packaging box body. The outer packaging box body and the drawing box body are both made of kraft paper and supported in a paper folding mode, first card paper is arranged in the drawing box base, a first magnetic attraction block is arranged on the inner side of the first card paper, second card paper is arranged in the drawing box base, and a second magnetic attraction block is arranged on the inner side of the second card paper. And a second magnetic attraction block is arranged on the inner side of the second card paper.

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.

The utility model relates to the technical field of kraft paper composite forming, in particular to a multi-layer kraft paper efficient composite forming device which comprises a workbench, a first fixing frame is fixedly connected to the upper end of the workbench, and a first overlapping roller, a second overlapping roller and a third overlapping roller are sequentially and rotationally connected to the interior of the first fixing frame from left to right. The other end of the spring is fixedly connected with the sliding block, heating rods are fixedly connected to the circumferential face of the first fixing shaft and the circumferential face of the second fixing shaft, and a hot pressing mechanism is installed at the upper end of the workbench and located at the right end of the pre-pressing forming assembly. Under the action of the pre-pressing forming assembly, the drying and curing speed of glue in the kraft paper can be increased, it is guaranteed that the laminated composite kraft paper has the excellent combination degree, drying is not needed in the follow-up process, the step of drying in a drying mechanism is omitted in the whole scheme, and the production efficiency is improved. Therefore, the whole scheme is simpler, more convenient, more efficient and more convenient to use.

The utility model provides lining paper for tobacco, which comprises a lining paper roll, the lining paper roll consists of an aluminum foil layer, a waterproof film layer, a kraft paper layer and a composite paper layer, the top end of the aluminum foil layer is connected with the waterproof film layer in a bonding manner, the surface of the waterproof film layer is connected with the kraft paper layer in a bonding manner, and the surface of the kraft paper layer is connected with the composite paper layer in a bonding manner. According to the lining paper roll, the waterproof film layer and the kraft paper layer are matched, so that not only is the waterproof performance of the lining paper improved, but also the structural strength of the lining paper is improved, and cigarettes in a cigarette case are effectively protected.

The utility model discloses a corner reinforcing type packaging carton which comprises a carton body and corner reinforcing angle paper arranged at the four corner angles of the left end and the right end of the carton body, the corner reinforcing angle paper is fixedly connected with the carton body through adhesives, kraft paper is further pasted on the outer wall of the corner reinforcing angle paper and used for preventing moisture and water, and the kraft paper is fixedly connected with the carton body through adhesives. The length of the corner reinforcing angle paper is equal to the height of the carton body, a novel inner supporting protection device is additionally arranged in the corner reinforcing type packaging carton, and the two portable handle pieces of the inner supporting protection device are exposed out of the front end and the rear end of the carton respectively. The inner supporting protection device can play a supporting and reinforcing role in the carton through the inner supporting plastic frame, and due to the fact that the inner supporting plastic frame is made of plastic and tightly attached to the inner wall of the carton, the situation that the carton is prone to deformation and damage due to the fact that the carton is extruded by foreign objects in the using process can be avoided.

The invention relates to the technical field of inflatable bubble bag composite film processing, in particular to a preparation process of a paper protective inflatable bubble bag composite film and a product thereof, and the preparation process comprises the following preparation steps: S1, coating waterproof and air-isolating glue on the surface of a base material, and drying to form a waterproof and air-isolating layer to obtain a waterproof and air-isolating composite film, the waterproof and air-insulation glue is prepared by mixing polyvinyl alcohol, polyurethane modified organic silicon, water-soluble chitosan, water-soluble acrylic resin, 2-ethylhexyl acrylate, a cross-linking agent, ethanol and water; s2, the kraft paper and the waterproof and air-proof composite film are pressed at the pressing temperature of 140-150 DEG C and the pressing pressure of 12-16 MPa, so that the kraft paper and the waterproof and air-proof layer are adhered to each other, and a kraft paper composite film is obtained; s3, tearing off the base material layer; and S4, the surface of the waterproof and air insulation layer is coated with heat sealing glue, drying is conducted, and the paper protective inflatable bubble bag composite film is obtained and has good waterproof and air insulation performance.

There is provided a coated paper comprising a kraft paper substrate, a precoating layer provided on the kraft paper substrate and a water vapour barrier coating layer provided on the pre-coating layer. The grammage according to ISO 536:2019 of the coated paper is 65-155 g / m2, the pre-coating layer comprises inorganic filler and binder in a dry weight ratio of between 100:25 and 100:5 and the water vapour barrier coating layer comprises clay pigment and styrene-butadiene co-polymer (SBR) binder in a dry weight ratio between 100:30 and 100:80. The particle size distribution (%<2 pm) of said clay pigment is above 90 and the shape factor of said clay pigment is below 20, such as below 10.

The invention discloses a preparation method of a waterproof and oilproof paper-based material containing a composite coating, and belongs to the technical field of packaging papers.The preparation method comprises the following steps that S1, a sodium alginate aqueous solution is prepared, and a coating A is obtained; s2, preparing a PLA and PBAT mixed solution to obtain a coating B; s3, uniformly coating the surface of raw kraft paper with the coating A, and then performing drying and hot pressing to obtain dry raw kraft paper with a flat surface; and S4, uniformly coating the coating B on the surface of the kraft base paper coated with the coating A, and fully drying to obtain the waterproof and oilproof paper-based material containing the sodium alginate, PLA and PBAT composite coating. The water-proof and oil-proof paper-based material prepared by the invention not only remarkably improves the water-proof and oil-proof performance of paper, but also retains the biodegradable characteristic of the paper, and has a wide application prospect.

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 invention provides processing equipment for a fireproof layer of a fireproof plate, and relates to the technical field of fireproof plate processing. The top face of the main table body is fixedly connected with a fixing support, and the bottom face of the main table body is fixedly connected with a round rod support. The opposite sides of the fixing supports are movably connected with connecting pieces. The inner side of the connecting piece is movably connected with a pressing device in a clamped mode. The pressing device is electrically connected with an external control circuit of the main table body, after the pressurizer is started, pressure is applied to the pressing block downwards, after the front end of the pressing block is attached to the top face of the auxiliary table face, pressurization continues to enable the bottom face of the pressing block to be completely attached to the top face of the auxiliary table face, the pressing block rotates through a shaft at the tail end of the pressurizer, and the pressurizer rotates through a rotating rod. After a pressing block is tightly attached to the top face of the auxiliary table top, kraft paper can be pressurized, a pressing device can move left and right on the inner side of a sliding groove plate through an external control circuit, kraft paper conveying work is achieved, and the problem that conveying work cannot be conducted during clamping is solved.

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.