4396 results about "Cardboard" patented technology

A repulpable insulated container assembly having a container formed of paper such as corrugated cardboard or varying paper materials and defining an interior; and a repulpable insert placed within the interior of the container and formed of a first paper layer; and a paper fiber pad coupled to the first paper layer.

The invention discloses a PHA / PVA nano-scale paper-based barrier emulsion as well as a preparation method and application thereof. The water-based emulsion comprises PHA particles with the average particle size ranging from 100 nanometers to 300 nanometers and PVA, the PHA and the PVA are blended according to a specific proportion, and the PVA serves as a main film forming component and a barrier property contribution component and is blended with the PHA to form the nano-emulsion. The preparation method comprises the following steps: mixing PHA particles with an initial average particle size of 1-100 microns with a PVA aqueous solution, and carrying out high-pressure homogenization and other nanocrystallization means to obtain the nano-emulsion. The emulsion can be coated on the surfaces of paper-based materials such as paper and paperboards, and a barrier coating is formed after the emulsion is dried. The obtained emulsion is small in particle size, good in stability and good in leveling property, a uniform and compact barrier film is easily formed on a paper base, the film has excellent water vapor, oxygen and grease barrier performance, and the material is bio-based, biodegradable and environmentally friendly.

The utility model relates to the technical field of drying equipment, and provides a packaging box paperboard drying device which comprises a supporting frame and a sealing frame fixedly installed on the supporting frame, a plurality of conveying rollers are installed on the inner side of the supporting frame in a rotating mode, and a conveying belt is arranged outside the conveying rollers in a transmission and sleeving mode. A conveying motor is fixedly installed on one side of the supporting frame, an output shaft of the conveying motor and the conveying rollers are coaxially fixed, a drying assembly used for drying the paperboards is arranged in the sealing frame, and a ventilation assembly used for accelerating drying of the paperboards is arranged in the supporting frame. Through the arrangement of the drying assembly, the packaging box paperboard is dried, hot air generated by the drying assembly can dry the bottom of the packaging box paperboard through operation of the ventilation assembly, and compared with a traditional drying mode, the problem that the bottom of the packaging box paperboard is not prone to making contact with the hot air is solved; in addition, due to the existence of the overturning assembly, the upper and lower surfaces of the packaging box paperboard can be overturned, and the drying effect of the packaging box paperboard is further improved.

An absorbent retail paper product comprised of cellulosic fibers having a concentration of 1, 3-dichloro-2-propanol that is not detected to 50 ppb, as measured using the ACOC official method 2000.0150, a concentration of 3-monochloro-1, 2-propanediol that is not detected to 1000 ppb, as measured using the ACOC official method 2000.0150, as measured by the "adipic acid test", as measured by the ACOC official method 2000.0150, as measured by the ACOC official method 2000.0150, as measured by the ACOC official method 2000.0150, as measured by the ACOC official method 2000.0150, as measured by the ACOC official method 2000.0150, as measured by the ACOC official method 2000.0150. Polyaminoamide-epihalohydrin at a concentration of not detected to 0.09% has a lateral wet strength of from 80 n / m to 200 n / m wherein all of the cellulosic fibers contained in the absorbent paper product are non-synthetic, the cellulosic fibers and the absorbent paper product are substantially free of formaldehyde.

The invention relates to the technical field of direct-current transformers, in particular to a direct-current transformer for a power distribution network, which comprises an iron core, a coil and insulating oil, an insulating assembly is arranged between the coil and the iron core, and the insulating assembly comprises an insulating paperboard, an insulating cushion block, an insulating contour semi-ring and a semi-ring groove, the insulating paper board is of a structure with a round inner wall and an octagonal outer wall. Through the unique design of the insulating paperboards, the insulating partition strips and the insulating partition blocks, the longitudinal oil ducts and the transverse oil ducts are effectively reserved, the oil flow path of the transformer is optimized, the cooling efficiency is improved, and stable operation of the transformer is ensured; through the bisection splicing structure of the insulating cardboard and the overturning action of the insulating parting strip, the quick clamping assembly of the insulating cardboard and the iron core is realized, the time for adapting the winding on site is saved, the tightness and uniformity of the winding are improved, and the reliability and safety of the transformer are enhanced.

The invention relates to a method and a machine for producing a fibrous web, preferably a tissue, paper or cardboard web or a nonwoven web, with a low-water raw material preparation of cellulose-containing fibers, preferably virgin pulp as bales and / or recycled fibers, into individual fibers and / or fiber bundles; wherein the individual fibers and / or fiber bundles are formed and solidified in an air stream into a planar fiber layup on a, preferably permeable, forming belt by a dry forming process; and wherein a fluid, preferably water and / or a water-additive mixture, is applied to the, preferably planar, fiber layup and the fibrous web is dried. The invention is characterized in that the total amount of fluid applied is distributed over at least two application steps.

The present invention discloses a PHA / PVA nanoscale paper-based barrier emulsion, and its preparation method and application. The aqueous emulsion comprises PHA particles with an average particle size of 100 nanometers to 300 nanometers and PVA, wherein PHA and PVA are blended in a specific ratio, and PVA is blended with PHA as the main film-forming component and barrier performance contributing component to form the nanoemulsion. The preparation method comprises mixing PHA particles with an initial average particle size of 1 micron to 100 microns with a PVA aqueous solution, and processing the nanoemulsion by nano-processing means such as high-pressure homogenization. The emulsion can be applied to paper-based materials, such as paper and cardboard surfaces, and forms a barrier coating after drying. The emulsion obtained by the present invention has small particle size, good stability, good leveling properties, and is easy to form a uniform and dense barrier film on the paper base. The film has excellent water vapor, oxygen and grease barrier properties, and the material is bio-based, biodegradable, and environmentally friendly.

The invention discloses a piece-by-piece feeding device and method for box body assembling, and belongs to the technical field of box body machining. The piece-by-piece feeding device comprises a rack, and two pushing assemblies used for preliminarily feeding stacked thick paperboards and aligning the stacked thick paperboards in the left-right direction are symmetrically installed on the leftmost side of the rack in the front-back direction; the right side of the pushing assembly is provided with a feeding assembly used for aligning the stacked thick paperboards front and back and alternately feeding the stacked thick paperboards in a double-station mode, the middle side of the feeding assembly is provided with a conveying assembly used for feeding the stacked thick paperboards one by one, and the right side of the feeding assembly is provided with a board supporting assembly used for assisting in supporting the thick paperboards for feeding. And a gluing machine for gluing the thick paperboard is arranged on the right side of the supporting plate assembly. By means of the mode, sheet alignment in the front-back direction and the left-right direction can be carried out while double-station alternate feeding is carried out, continuous sheet-by-sheet feeding can be carried out on sheets, and machining of the next station is facilitated.

The invention discloses a high-quality edge cutting paperboard edge cutting system in the technical field of paperboard edge cutting. The high-quality edge cutting paperboard edge cutting system comprises an operation table; a clamping module, a cutting module, a detection module and a control module are arranged on the operation table; the clamping module is used for fixing a paperboard; the cutting module comprises a cutter and a first moving assembly; the first moving assembly is used for assisting the cutter to complete shearing motion; a humidity adjusting assembly is arranged on the cutter; the humidity adjusting assembly is used for carrying out targeted humidity adjustment along the paperboard cutting position; the detection module is used for detecting the water content condition of the cutting position; the control module is used for controlling operation of the humidity adjusting assembly based on the water content condition of the cutting position. According to the scheme, the process parameters can be automatically adjusted according to the real-time feedback result, and the stability and consistency of the cutting quality are ensured.

The invention discloses an automatic strapping machine for a cigarette case production line. The automatic strapping machine comprises a rack, a paperboard outlet unit, a strapping unit and a finished product outlet unit. The rack comprises a lower bracket, a positioning backup plate, an upper bracket and a middle plate; the lower support comprises a working platform, two guide grooves transversely formed in the left middle portion of the working platform and a bundling opening formed in the right middle portion of the working platform. The positioning backup plate is fixed to the working platform and located on the front sides of the two guide grooves in parallel. The upper support comprises a top plate and a middle plate which is hung below the top plate and located over the bundling opening. The paperboard outlet unit comprises a paperboard pressing mechanism and a paperboard feeding mechanism; the bundling unit comprises a coated paper placing mechanism, a coated paper feeding mechanism, a coated paper pulling mechanism, a coated paper pressing mechanism, a coated paper cutting mechanism, a paperboard lifting mechanism, a coated paper bending mechanism and a coated paper hot-bonding mechanism; the finished product output unit comprises a finished product output table, a finished product receiving table and a finished product pushing mechanism. The strapping device is good in strapping quality and high in automation degree.

System for handling cardboard reels to feed machines that produce cardboard tubes, comprising a station (F) for picking up the reels configured to receive a stack (2) of overlapping cardboard reels (1), a station (U) for unwinding of the reels, and handling means (D) for moving the reels (1) along a predetermined path. The means (D) for moving the reels comprise pneumatic means intended to pressurize a space (S) inside the stack of reels, in which said space includes the interface between an uppermost reel of the stack and the underlying reel, and gripping means configured and controlled to perform grip and release of the highest reel in the stack respectively.

The invention provides a method for automatically monitoring the humidity of a corrugated board on line, and belongs to the technical field of corrugated board production. Uniform thermal pulses are applied to the surface of the corrugated board through a thermal infrared imaging device in combination with a thermal pulse excitation system, and high-resolution thermal response images are collected in real time. The system calculates thermal diffusivity and thermal attenuation characteristics based on an unsteady state heat conduction equation, generates a temperature distribution matrix, extracts a humidity characteristic spectrum by using a heat and humidity two-parameter neural network model, and establishes a corresponding relation between temperature and water content. Carrying out region segmentation through the humidity characteristic spectrum, identifying a humidity abnormal region, calculating a deviation value, and triggering an alarm when the deviation value exceeds a preset threshold value. The technical problem that in the prior art, corrugated board humidity detection mainly depends on manual sampling and special instruments, and real-time online monitoring on a production line cannot be achieved is solved.

The invention relates to a corrugated board defect detection method, which comprises the following steps: collecting front and back images of a corrugated board, fusing the at least three images to obtain sample images I front and I back, the images being at least three images shot under at least three light source positions; preprocessing the sample image I positive and I negative, performing image segmentation on the preprocessed image, preliminarily extracting a defect region through image segmentation, and obtaining a final defect region according to a gray feature histogram; after a defect area is extracted, graying processing is carried out on the defect area, the defect area is converted into a grayscale image from an RGB image, then sub-pixel edge extraction is carried out on the grayscale image, fitting is carried out on the extracted defect edge contour, and the defect is positioned. Aiming at the problems of low image contrast and small defect area of the corrugated board, the invention provides the sub-pixel edge extraction method, so that a relatively good defect positioning effect is achieved, an expected detection purpose is achieved, and the applicability of the area growing method in a complex environment is relatively well improved.

The invention relates to the technical field of strength detection equipment, in particular to a cigarette case paperboard strength detection device which comprises a workbench, the top of the workbench is connected with a hydraulic box, the top of the hydraulic box is connected with a detachable positioning seat, a top film is arranged in the detachable positioning seat, the top of the workbench is connected with a shell, and the top of the shell is provided with an air cylinder. And a pressure head for applying pressure to the paperboard is mounted on the air cylinder. Through cooperation of the hydraulic box, the detachable positioning seat, the top film, the air cylinder, the pressing head, the clamp and the butt joint assembly, detection of the bursting strength, the edge pressing strength and the tensile strength of the paperboard can be completed, the detection process can be simplified, the paperboard strength detection efficiency can be improved, the data integration accuracy can be improved, and the paperboard strength detection precision can be improved.

The utility model relates to the technical field of packaging paper film covering, and discloses a paperboard film covering device for packaging paper processing, which comprises a film covering table, vertical plates are slidably arranged at the upper end of the film covering table and located at sliding grooves, sliding blocks are fixedly arranged at the lower ends of the two vertical plates, a motor is fixedly arranged on one side of the interior of the film covering table and close to the front end of the film covering table, and the motor is connected with the film covering table. The output end of the motor is fixedly connected with a lead screw, the outer wall of the lead screw is sleeved with a threaded sleeve in a threaded mode, the upper ends of the two film covering tables are fixedly connected with a top plate, first electric telescopic rods are fixedly arranged on one side of the lower end of the top plate and located at the front end and the rear end of the top plate, and a pressing roller is rotationally arranged between the two first electric telescopic rods. A portal frame is fixedly arranged at the upper end of the laminating table and close to one side of the pressing roller, and a second electric telescopic rod is fixedly arranged in the middle of the lower end of the portal frame. According to the paperboard laminating device, the paperboard can be quickly laminated, meanwhile, the paperboard dust cleaning function is achieved before laminating, and the paperboard laminating effect is improved.

The utility model relates to the field of carton production equipment, in particular to an anti-wrinkle thickened paperboard automatic feeding device which comprises a feeding table and a paper conveying table, an overturning mechanism is arranged between the feeding table and the paper conveying table, one side, close to the feeding table, of the overturning mechanism is connected with a rotating mechanism, the outer side of the rotating mechanism is connected with a supporting piece and an installation frame, and the supporting piece is connected with a supporting rod. A material bearing rod and a third air cylinder are hinged to the side, close to the feeding table, of the mounting frame, a paperboard stack is moved to the position above the material bearing rod through the feeding table, then the swing mechanism drives the material bearing rod to ascend, then the material bearing rod supports the paperboard stack, then the turnover mechanism drives the paperboard stack to turn over by 90 degrees upwards, the supporting pieces support the paperboard stack, and the paperboard stack is conveyed to the feeding table through the third air cylinder. And then the third air cylinder drives the material bearing rod to swing so that the material bearing rod can push over the paperboard stack, and finally the swing mechanism drives the supporting piece to move so that the pushed-over paperboard stack can be conveyed to the paper conveying table, the automation degree is high, the production reliability is improved, the production safety degree is improved, and the production efficiency is improved.

The utility model relates to the technical field of carton manufacturing and processing, in particular to novel carton manufacturing and processing equipment which comprises an indentation support, a hydraulic device, a hydraulic rod, a hydraulic support, an upper indentation plate, a buffer frame, a telescopic rod, a buffer spring, a lower indentation plate and a limiting plate. A hydraulic device is arranged on the top face of the creasing support, a hydraulic rod is arranged at the output end of the hydraulic device, a hydraulic support is arranged on the bottom face of the hydraulic rod, an upper creasing plate is arranged on the bottom face of the hydraulic support, a telescopic rod is arranged on the top face of the buffering frame, a buffering spring is arranged on the outer side of the telescopic rod, and a lower creasing plate is arranged on the top face of the telescopic rod. A limiting plate is arranged on the top surface of the lower creasing plate; according to the carton folding device, the creasing structure is arranged, after a paperboard is cut according to the size, a split supporting plate is conveyed to the position below the creasing structure, creasing treatment is conducted on the surface of a carton, slotting treatment can be conveniently conducted on the carton in the subsequent machining process, and therefore the paperboard subjected to creasing and slotting can be rapidly folded into the carton.

The present invention concerns a recyclable container (1) comprising a cardboard-based socket element (2) and a paper-based receptacle element (3), wherein the receptacle element is connected to the socket element in a way that a product can flow from the receptacle element through the socket element, so that the product can be dispensed by the bulk dispensing device. The container is recyclable with the paper stream.

The invention discloses novel environment-friendly flame-retardant corrugated paper and a preparation method thereof, and belongs to the technical field of paperboard products. The corrugated paper is formed by bonding upper surface paper, a V-shaped flame-retardant core base layer and lower surface paper through a flame-retardant adhesive; the flame-retardant adhesive is prepared from the following components in parts by weight: 50 to 65 parts of oxidized cassava starch, 12 to 23 parts of phosphate esterified urea-formaldehyde resin, 5 to 15 parts of nitrogen-phosphorus modified isocyanate-based polyurethane and 2 to 8 parts of nano aluminum hydroxide; wherein the nitrogen and phosphorus modified isocyanate-based polyurethane is prepared by carrying out a reaction on isophorone isocyanate, bisphenol A type monophenyl phosphonate and modified montmorillonite, and the modified montmorillonite is prepared by carrying out a reaction on montmorillonite and polysiloxane. The corrugated paper provided by the invention has excellent flame retardant property, and also has good chemical stability and mechanical properties.

The utility model discloses a paperboard packing machine with a feeding structure, and relates to the technical field of paperboard packing machines, the paperboard packing machine comprises a machine body, a placing mechanism and a conveying belt, the conveying belt is arranged at the bottom end of the inner side of the machine body, the placing mechanism is arranged at the top end of the inner side of the machine body, and the placing mechanism comprises a driving motor, a supporting roller and a conveying belt. The auxiliary feeding mechanism is arranged, due to the fact that linkage is achieved between a lead screw and a supporting roller through cooperation of a bevel gear set and a rotating rod, when the supporting roller and a conveying belt operate, the bevel gear set, the rotating rod and the lead screw rotate together, due to the fact that the lead screw is in threaded connection with a threaded frame, the threaded frame slides in the horizontal direction, and therefore the supporting roller and the conveying belt are driven to rotate. According to the paperboard packaging machine, the anti-toppling plate is arranged on the conveying belt, and the anti-toppling plate synchronously moves along with the conveying belt, so that the anti-toppling operation of packaging bags filled with paperboards can be achieved through the anti-toppling plate, then auxiliary feeding of the packaging bags filled with the paperboards can be achieved in cooperation with the conveying belt, and feeding of the paperboard packaging machine is stable.

The invention relates to the technical field of corrugated paper box production, in particular to a thickness detection device for corrugated paper box production and a using method, the thickness detection device comprises a C-shaped frame, a paperboard placing groove is formed in the upper surface of the bottom of the C-shaped frame and used for positioning a corrugated paperboard, and the lower surface of the top of the C-shaped frame is connected with a reset mechanism. The upper surface of the bottom of the C-shaped frame is connected with a scale plate, the top of the C-shaped frame is connected with a measuring mechanism and an adjusting mechanism, the measuring mechanism is used for measuring the thickness and flatness of a corrugated board, and the adjusting mechanism is used for adjusting a thickness measurement value according to the flatness of the corrugated board. Through cooperative use of the measuring mechanism and the adjusting mechanism, self-adaptive compensation of a thickness measurement value is realized, when the surface of the corrugated board is uneven due to uneven thickness distribution, the average value of the thickness of the corrugated board can be detected, the flatness of the corrugated board can be measured, and the measurement accuracy of the corrugated board is improved. And then the thickness data is adjusted through the measured flatness, so that the production quality of the packaging box is guaranteed.

The invention relates to the technical field of corrugated paper production, one embodiment of the invention provides a dust removal device for corrugated paper production, the dust removal device comprises a rack, and further comprises a conveying belt, a dust collection box, a brush and a cutting knife, the conveying belt is arranged in the rack through a transmission mechanism, a plurality of through holes are formed in the conveying belt, and the dust collection box is arranged on the conveying belt; the dust collection box is arranged in the rack through the dust collection mechanism, the top end of the dust collection box makes contact with the inner wall of the conveying belt, double-face dust removal can be conducted on corrugated boards, the brush is arranged at the top end of the rack through the rotating mechanism and used for driving the brush to brush off dust on the surfaces of the corrugated boards, and the cutting knife is arranged at the top end of the rack through the cutting mechanism. According to the technical scheme, the corrugated board cutting device is used for solving the technical problems that in the prior art, dust removal is conducted on corrugated boards through a brush before the corrugated boards enter a printing machine, impurities and dust which are firmly attached are difficult to clean through the dust removal mode, and the dust removal efficiency of the corrugated boards is reduced.

The utility model discloses a high-strength corrugated board which comprises an outer-layer paper board and an inner-layer paper board and further comprises a plurality of reinforcing assemblies used for reinforcing a corrugated board body, the two sides of each reinforcing assembly are connected with a first supporting plate and a second supporting plate in an adhesion mode respectively, and the first supporting plate and the second supporting plate are connected with the outer-layer paper board and the inner-layer paper board in an adhesion mode respectively. The outer side wall of the first supporting plate is connected with a first UV-shaped corrugated paper core in an adhesive mode, the outer side wall of the second supporting plate is connected with a second UV-shaped corrugated paper core in an adhesive mode, and the outer-layer paper board and the inner-layer paper board are connected to the outer side wall of the first UV-shaped corrugated paper core and the outer side wall of the second UV-shaped corrugated paper core in an adhesive mode respectively. According to the corrugated board, the structural strength and the impact resistance of the corrugated board body are effectively improved by means of the hard reinforcing layers and the buffer layers, so that the corrugated board body has higher bearing strength, is not easy to damage when being collided by external force, and has a higher comprehensive practical effect.

The invention relates to a method for producing a dried fibrous web (36), in particular a paper, cardboard or tissue web, from baled pulp comprising a plurality of stacked pulp sheets, comprising the following steps: feeding the baled pulp into a shredder (16) to produce chips (20) from the fed baled pulp; feeding the chips (20) to a fiberizing device (32) to fiber the chips (20) in a dry process; and feeding the fibers into an air laying unit (34) to form a dried fibrous web (36) from the fibers; wherein the shredder (16) is designed and operated such that at least 50% of the chips (20) produced therein have essentially the shape of an irregular polygon, with a weight-to-circumference ratio between 5.0 g / m² and 10 g / m².Furthermore, the invention relates to a device for carrying out the method according to the invention.

The utility model relates to the field of universal adjustable dies, in particular to a universal adjustable die for a sewing machine. The technical problems that a cardboard is easily damaged due to the fact that a cardboard structure is carved by a manual knife in most universal adjustable dies, large errors exist in manual carving, and scraped products are easily generated are solved. According to the technical scheme, the universal adjustable mold for the sewing machine comprises a universal adjustable mold body. By arranging the mold clamping and adjusting assembly, most products can be universally used, tedious mold plate engraving, mold plate purchasing and mold plate replacing are not needed, the problems that mold plates are many, miscellaneous and high in price are solved, the limiting assembling and stabilizing assembly can complete fixing work of other pattern materials under the condition that the mold is not replaced, patterns can be fixed, and the mold clamping and adjusting assembly is convenient to use. Therefore, the purpose of saving time and labor is achieved.

The utility model discloses a modular adsorption concentration device and relates to the technical field of waste gas treatment. The device comprises a main body structure, comprising an installation shell, an air outlet formed in the upper end of the installation shell, an air inlet formed in the lower end of the installation shell and a support located at the lower end of a machine shell. The adsorption structure comprises a rotating shaft, a grid frame located on the outer wall of the rotating shaft, a filter box inserted into the grid frame, a clamping plate located at one end of the filter box and a spring located in the side of the filter box; the clamping block is positioned at one end of the spring; the fixing structure comprises a threaded sleeve at the upper end of the support, a screw inserted into the threaded sleeve in a rotating mode, a positioning groove formed in the outer wall of the rotating shaft and a positioning block located at the upper end of the screw. By arranging the adsorption structure, the problems that when activated carbon needs to be replaced due to adsorption saturation, equipment operation needs to be stopped, saturated activated carbon needs to be manually cleaned firstly, then new activated carbon needs to be added, and the replacement process is strenuous and tedious are solved.

The invention discloses a laser cutting device for printing and packaging, and relates to the technical field of laser cutting, the laser cutting device for printing and packaging comprises a workbench, two groups of supporting legs are symmetrically mounted at the bottom of the workbench, first electric sliding rails are symmetrically mounted at the top of the workbench, and the interiors of the two first electric sliding rails are slidably connected with right movable seats; a mounting frame is fixedly mounted on the tops of the two movable seats, a second electric sliding rail is fixedly mounted on the upper portion of the inner side of the mounting frame, the movable seats are slidably connected to the outer portion of the second electric sliding rail, the adaptive assembly is arranged below the movable seats, and the adaptive assembly comprises a fixing rod; according to the paperboard cutting device, the distance between the laser cutting head and a paperboard cannot be changed in the cutting process of the paperboards with different thicknesses, the height of the laser cutting head can adapt to the paperboards with different thicknesses, the blowing pressure can be adjusted in a self-adaptive mode according to the thickness of the paperboard in the process that the air spraying pipe cleans the cutting position of the paperboard, and practicability is improved.

The invention relates to a covering (10) for a machine for producing a fibrous web, in particular a paper, cardboard or tissue web, wherein the covering (10) is essentially formed from a perforated substrate (20) and has the form of an endless strip extending in a longitudinal direction, with a first side edge (26) and a second side edge opposite the first side edge (26), wherein an unperforated first edge protection strip (48) extending in the longitudinal direction of the covering (10) is provided immediately adjacent to the first side edge (26) and wherein an unperforated second edge protection strip extending in the longitudinal direction of the covering (10) is provided immediately adjacent to the second side edge, wherein the first edge protection strip (48) and the second edge protection strip each have a width between 1 mm and 5 mm, preferably between 1 mm and 3 mm.exhibit and are coated with a protective layer (52), wherein the respective protective layer (52) extends in the width direction (WD) of the covering (10) beyond the unperforated first edge protection strip (48) or the unperforated second edge protection strip into a perforated area of ​​the substrate (20), wherein the material of the protective layer (52) projects at least partially into passage channels (30) of the perforated area and forms a form-fitting connection with the substrate (20) there.

A preparation method of a foldable / unfoldable honeycomb structure lunar module can meet the requirements of astronauts living on extraterrestrial bodies, liquid transportation, pressure-resistant containers, etc. In the present invention, a planar circular ring sheet material is equally divided and marked, misaligned and connected, axially stretched, and then glued and cured at a specified position to obtain a foldable and telescopic hollow honeycomb structure; the structure shaping of the honeycomb structure lunar module is realized by stepwise curing of the resin coating on the honeycomb surface. The present invention proposes a new hollow honeycomb structure as the skeleton structure of the lunar module. The planar honeycomb structure has the advantages of low density and strong pressure resistance, and is applied to the sandwich of anti-theft doors, airplanes, corrugated cardboard, etc. When the planar honeycomb is bent, the honeycomb will be deformed, seriously affecting its mechanical properties. The novel hollow honeycomb structure not only has the advantages of the planar honeycomb, but also solves the problem that the planar honeycomb is difficult to be applied to curved surfaces.

The present invention comprises: a pair of support arms movably supported along the axial direction of a support shaft of a frame; a drive device that causes the pair of support arms to approach and separate; and a pair of chucks that are rotatably mounted on tip portions of the pair of support arms and are capable of supporting a paper roll. The chucks include: a chuck main body that has a shape in which an outer diameter decreases from a base portion toward a tip portion and in which a plurality of guide parts along the axial direction are provided on an outer circumferential surface; and a plurality of support members that include a receiving part movably supported by the plurality of guide parts and capable of contacting an end of the paper roll, and a support part capable of contacting an inner circumferential surface of the paper roll. Further provided are: a movement unit that includes a movement member capable of contacting the plurality of support members and that can move the plurality of support members to the tip portion side by the movement member; and a force applying device that applies force in a direction in which the plurality of support members and the movement member approach each other.