108 results about "Packaging industry" patented technology

The invention relates to the technical field of intelligent manufacturing in the packaging industry, in particular to a packaging box production line monitoring system based on artificial intelligence, and aims to solve the problems that in the prior art, accurate feature extraction and classification cannot be carried out on packaging box images, multi-source information cannot be weighted and integrated by using an attention mechanism, and the detection accuracy is poor. And the accuracy of identifying the surface defects of the packaging box is improved. According to the invention, standardization, feature extraction and classification are carried out on packaging box images by using a convolutional neural network through a defect identification module, vibration, noise and temperature data collected from a die-cutting machine are processed and then fused with image features, multi-source information is weighted and integrated by using an attention mechanism, unified feature representation is generated, defect determination is completed by a full connection layer, and the defect identification accuracy is improved. And the accuracy and stability of the model in a complex environment are improved.

The invention discloses a composite material liner and a production process thereof, and the production process comprises the following steps: carrying out plasma surface activation treatment on a foam substrate to obtain an activated foam substrate; the activated foam substrate and a polyester film are placed in ultraviolet irradiation equipment to be subjected to modified composite treatment, and a composite base material is obtained; performing line-by-line irradiation on the composite base material along a preset grid pattern based on a laser, forming a groove network structure on the surface of the composite base material, and obtaining a grid base material with grid identification lines; the grid base material is subjected to nanometer coating spraying treatment, and a coating base material is obtained; the coating base material is subjected to hot-pressing shaping treatment, and a semi-finished liner product is obtained; and the semi-finished liner is subjected to laser cutting treatment according to the preset size, and the composite liner is obtained. Through the integrated process design, the technical bottleneck that in the prior art, the surface structure machining precision is insufficient is remarkably overcome, and the applicability and reliability of the product in the electronic equipment industry, the automotive trim industry and the packaging industry are remarkably improved.

The invention belongs to the technical field of packaging materials, and particularly relates to a packaging material with antibacterial activity and a preparation method thereof. The packaging material with antibacterial activity is prepared from the following raw materials in parts by weight: 60 to 70 parts of polylactic acid, 10 to 20 parts of poly (butylene succinate), 3 to 5 parts of modified montmorillonite, 0.5 to 1 part of a bacteriostatic agent, 0.5 to 1 part of a lubricating agent, 1 to 3 parts of a compatilizer and 1 to 1.5 parts of functional filler. The packaging material provided by the invention has excellent barrier property, antibacterial property and mechanical property, stable fixation and synergistic interaction of functional components such as the modified montmorillonite and the functional filler are realized, and the packaging material has important significance in promoting technical progress of the packaging industry and meeting the requirements of the market on high-performance packaging materials.

The utility model relates to a pet trousers packaging machine which comprises a machine frame, a packaging bag forming device arranged on the inner side of the machine frame and a pet trousers forming and packaging device arranged on the inner side of the machine frame, and a clamping mechanism is arranged between the adjacent packaging bag forming device and the pet trousers forming and packaging device in a lifting mode. And the lifting device is used for holding the pet trousers output by the pet trousers forming and packaging device and then vertically lifting the pet trousers to a specified height. By means of the design, manual intervention is greatly reduced, labor cost is remarkably reduced, meanwhile, various problems caused by manual operation are effectively avoided, it is ensured that each piece of pet trousers can be accurately conveyed to a designated position without errors, a solid foundation is laid for subsequent perfect cooperation with a packaging bag, and the production efficiency is improved. And therefore, the packaging efficiency and the product quality are comprehensively improved, and the pet pants packaging industry is led to advance to a new automation height.

The invention relates to a PET material as well as a preparation method and application thereof. The PET material is prepared from the following components in parts by weight: 75 to 95 parts of PET resin, 2 to 10 parts of PCTG, 3 to 8 parts of flexibilizer, 2 to 5 parts of glass flake and 0.2 to 1 part of poly alkyl glycol dibenzoate. The toughening agent comprises an ethylene-methacrylic acid copolymer and / or ethylene-butyl acrylate. According to the PET material provided by the invention, the PET resin and the PCTG are taken as base materials, the ethylene-methacrylic acid copolymer and / or ethylene-butyl acrylate are / is taken as a toughening unit, the glass flakes are taken as a reinforcing framework, and the poly alkyl glycol dibenzoate is taken as a crystallization inhibitor, so that the PET material has good transparency through the design of all the components; meanwhile, the PET material has good strength and rigidity and can well meet the high-performance requirements of the fields of low-temperature food packaging industry and the like on the PET material.

The invention belongs to the technical field of adhesive packaging, and relates to an adhesive barreled package and a packaging method.The adhesive barreled package comprises a barrel body, an aluminum foil bag and a PE inner bag; a detachable barrel cover is arranged on the barrel body in a sealing manner; the aluminum foil bag is arranged in the barrel body, and the PE inner bag is arranged in the aluminum foil bag; the two ends of the aluminum foil bag and the two ends of the PE inner bag are sealed. Low-dew-point shielding gas is contained between the aluminum foil bag and the PE inner bag. And the PE inner bag is used for storing an adhesive. According to the barreled package and method for the adhesive, multiple barrier protection is provided for transportation of the adhesive, effective protection of the adhesive in the transportation process is achieved, the safety and stability of the adhesive in the long-distance transportation process are improved, and the situation that due to long-distance transportation, the adhesive shakes, impact is caused to a packaged object, the packaged object is damaged, the product performance is affected, and the service life of the packaged object is prolonged is avoided. The product quality is further influenced; and the packaging method is simple and easy to implement, and is suitable for all adhesive packaging industries.

The application relates to a fruit and vegetable packaging film based on a MOF material, which comprises the following components: polyvinyl alcohol, modified polylactic acid, Ag@MOF nanoparticles, plant extract, glycerol, and a solvent; wherein the modified polylactic acid is obtained by reaction of acrylamide, double-bond polylactic acid, vinyl acetate and KH570 modified nano-silver particles. Through the synergistic effect of the modified polylactic acid and components such as polyvinyl alcohol, Ag@MOF nanoparticles and plant extract, the mechanical properties, compatibility, antibacterial property, barrier property and preservation performance of the packaging film are significantly improved, the degradability of the material is ensured, and the application has important significance for promoting the development of the fruit and vegetable preservation packaging industry.

The invention innovatively provides the boxing machine paper box supply system based on ribbon bundling. The paper box feeding system of the boxing machine comprises a paper box bin device which comprises a paper box bin, and is characterized by comprising a paper box transferring mechanical arm and a paper box ribbon removing device, and the paper box transferring mechanical arm comprises a mechanical arm body and a paper box clamp; the paper box clamp comprises a mounting seat, a suction belt suction nozzle, a suction nozzle lifting power source, a left clamping block, a right clamping block and a clamping power source; the paper box binding belt removing device comprises a placing platform, a binding belt upward suction mechanism, a binding belt cutting mechanism, a binding belt downward suction mechanism and a binding belt downward pulling mechanism, and the binding belt upward suction mechanism and the binding belt cutting mechanism are located above the placing platform; and the ribbon down-sucking mechanism and the ribbon down-pulling mechanism are positioned below the placing platform. The carton feeding system of the boxing machine solves the automation bottleneck of the carton feeding link of the high-speed boxing machine, has high efficiency, economical efficiency and safety, and provides key technical support for intelligent upgrading of the packaging industry.

The present invention relates to the field of packaging materials, and particularly to a bio-based antibacterial packaging material and a preparation method thereof, which are used to solve the problem that the existing packaging materials have poor antibacterial performance, restricting their application in the field of antibacterial packaging. The preparation method reacts and modifies polylactic acid with doped zinc oxide, modified chitosan and multi-group siloxane to form an antibacterial substrate, endowing the bio-based antibacterial packaging material with a strong antibacterial ability, effectively inhibiting the growth of bacteria and molds. Moreover, polylactic acid is a bio-based material and can be naturally degraded, reducing environmental pollution, so that the prepared packaging material has excellent antibacterial performance, mechanical properties and biodegradability, and has broad application prospects in the fields of food, medicine and medical devices, which is of great significance for promoting the green development and sustainable development of the packaging industry.

This invention relates to the field of AI intelligent design technology, specifically to a packaging system platform based on AI intelligent design and its usage method, including an AI intelligent design unit, an ASIC computing acceleration unit, a seamless data integration unit, an intelligent manufacturing control unit, and a smart logistics warehousing unit. This invention achieves intelligent analysis of packaging design requirements, automatic generation and optimization of compliant and implementable digital design solutions through multimodal large-scale models, a packaging industry-specific database, and ASIC computing power support. Furthermore, it provides low-power, low-latency hardware-level dedicated acceleration support for AI design model computation and visual inspection algorithms through lightweight acceleration technologies such as a customized heterogeneous computing architecture for the packaging field, dedicated instruction set scheduling, mixed-precision quantization, and operator fusion. The synergistic effect of these two technologies significantly improves packaging design efficiency, compliance, and feasibility.

The utility model relates to the field of the printing and packaging industry, in particular to a waste gas collecting and purifying device for the printing and packaging industry, which comprises a waste gas purifying box body, an exhaust fan body is arranged on one side of the waste gas purifying box body, the positive pressure end of the exhaust fan body is connected with a gas conveying pipeline, and the other side of the gas conveying pipeline is inserted into the waste gas purifying box body. A first spraying assembly, a second spraying assembly and a third spraying assembly are arranged in the waste gas purification box body at equal intervals; according to the waste gas purification device disclosed by the utility model, waste gas is introduced into the waste gas purification box body through the exhaust fan body, and treatment liquid in the liquid storage box is sprayed out through the spray head through the first spray assembly, the second spray assembly and the third spray assembly, so that the waste gas is purified, the contact area between the waste gas and the treatment liquid is increased, and the contact time between the waste gas and the treatment liquid is prolonged; the full contact between the waste gas and the treatment liquid is ensured, so that the purification efficiency of the waste gas is improved.

The utility model relates to the technical field of PE film processing equipment, in particular to a PE wrapping film slitting processing device facilitating quick film replacement. According to the technical scheme, the slitting device comprises a slitting device body and a guide roller used for guiding and conveying a PE winding film, and a fixing assembly used for fixing the position of a PE winding film winding drum is further installed in the slitting device body; the fixing assembly comprises a first air cylinder fixedly connected with the side face of the slitting equipment body, the output end of the first air cylinder is connected with a fixing frame, and the outer ring of the fixing frame is further provided with a first sleeve piece, a second sleeve piece and a third sleeve piece with the diameters sequentially increased. According to the utility model, the winding drums with different inner diameters can be quickly positioned and fixed without frequently replacing a fixing assembly, the PE winding film is quickly mounted, and the winding drum fixing device is suitable for flexible production scenes of various varieties and conforms to the development trend of high efficiency and intelligence in the packaging industry.

This invention relates to a process for manufacturing hot stamping foil for cigarette tipping paper. The process involves preparing a base film layer, release layer, color layer, plating layer, and adhesive layer using biodegradable materials. The base film is prepared by mixing polylactic acid with a cellulose derivative. A wax-based release agent is then coated onto the base film to form the release layer. Next, a water-based pigment is coated to form the color layer. A thin aluminum plating layer is formed using vacuum evaporation. Finally, a biodegradable adhesive is coated to form the adhesive layer. The hot stamping foil obtained by this process is suitable for cigarette tipping paper, possessing certain degradation properties and hot stamping adhesion. The manufacturing process includes raw material preparation, coating, and drying steps, and is applicable to the cigarette packaging industry.

The invention discloses an organic waste gas solvent recovery and dehydration device and a dehydration method, and belongs to the technical field of organic waste gas treatment.The organic waste gas solvent recovery and dehydration device comprises two collaborative dehydration tanks, a rough solvent tank, a phase splitting tank, a wastewater buffer tank, a two-stage condenser, a hot oil heat exchanger, a regeneration fan, a matched oxygen analyzer, a pressure gauge, a thermometer and a liquidometer, and the components are communicated through pipelines provided with stop valves; the two-stage condenser is respectively connected with a cooling water source and a freezing water source to form a circulation loop; and the hot oil heat exchanger is connected with a heat-conducting oil circulation system. According to the method, continuous operation is achieved through two-tank inert gas replacement, raw material conveying adsorption, material backflow switching, residual material recovery, safety detection, desorption, product separation and cooling reset. The core technical problems that the dehydration process is interrupted, the safety and stability are poor, the dehydration efficiency and the solvent recovery rate are low, and the existing organic waste gas solvent recovery dehydration device is difficult to adapt to industrial continuous production in the printing and packaging industry due to the fact that adsorption and regeneration processes cannot be synchronously carried out are solved.

The utility model discloses an efficient reinforcement forming device for a cosmetic bottle opening. And a plurality of problems in the process of manufacturing the bottle opening from the PET bottle preform in the blow molding process are effectively solved. The device comprises forming dies which are symmetrically arranged, and forming cavities on the inner sides of the forming dies determine the shape of a bottle opening. And cooling runners are arranged in the forming die and are uniformly distributed along the outer side of the forming cavity. The semi-ring cavity cooling cavity and the inner edge cooling forming groove in the lower end inside are matched with the bottom of the forming die in shape, material flowing is guided, and the strength of the bottle opening is enhanced. The heat dissipation spacers distributed in the cooling cavity in a circumferential array mode are matched with the surface micro-channels, the heat dissipation efficiency is greatly improved, and the dimensional deviation caused by uneven cooling is solved. In addition, a guide groove and a guide column on the front side of the forming die ensure accurate opening and closing of the die and stable production. The device obviously improves the bottle opening forming quality, improves the size precision and strength, shortens the blow molding period, reduces the cost, and powerfully promotes the development of the cosmetic packaging industry.

The invention relates to a preparation method of novel anti-counterfeiting directly-plated paper, belongs to the technical field of packaging materials, and is realized by mainly depending on the interaction of a prime coating and a printing coating. According to the key point of the technical scheme, the coating comprises the following components in parts by weight: a primer coating comprises the following components in percentage by weight: 20-22% of epoxy acrylic resin; 28 to 30% of TPGDA (Thermoplastic Glycol 20%-21% of TMPTA (trimethylolpropane 28.5%-29.5% of HDDA (High Density And 0.5 to 1% of BYK333. The printing coating comprises the following components in percentage by weight: 20-24% of pure acrylic resin; 5% of epoxy acrylic acid; 35.8% to 39.8% of TPGDA (Thermoplastic 20%-22% of TMPTA (Trimethoprim Poly 13 to 15% of HDDA (Hexamethylene Diamine Diamine And 0.2%-0.5% of BYK333. The invention aims to provide the coating for prime coat and the coating for printing, which are used for producing a high-quality positioning anti-counterfeiting product, a high-brightness effect and a matte effect of a mirror surface are formed on the same printed matter through a cohesion reaction between the prime coat layer and the printing layer, high contrast of local images and texts is visually realized, and the anti-counterfeiting effect of the printed matter is improved. And the three-dimensional convex feeling and the cold ironing effect are achieved at the same time, the double requirements for counterfeiting prevention and attractiveness are met, and the requirements of the novel high-end packaging industry and the decorative material market are met.

The utility model belongs to the technical field of transport packaging, and particularly relates to a fresh food frame. The fresh food frame comprises a frame body and a bottom pad. The frame body comprises a bottom plate and a side peripheral plate arranged around the bottom plate by a circle, and the bottom plate and the side peripheral plate define a containing groove with an opening in the top. The bottom pad is arranged in the containing groove and connected with the bottom plate. The bottom pad at least comprises an antibacterial layer, and the antibacterial layer is made of fibrilia composite materials and can cover the bottom of the containing groove. According to the embodiment of the invention, the antibacterial layer is made of the fibrilia composite material, so that the bottom pad has the characteristics of good antibacterial property, bearing property, buffering property, renewable recycling property and the like, the shelf life of goods such as fresh goods can be prolonged, the durability of the bottom pad is improved, and the service life of the bottom pad is prolonged. And the requirement of green transformation in the fresh cold-chain packaging industry can be met.

The invention belongs to the technical field of light, fireproof and heat-insulating materials used in building and packaging industries, and provides a flame-retardant smoke-suppression EPS (Expandable Polystyrene) composite material and a preparation method thereof. Curing and forming the EPS foam balls coated with the flame-retardant reagent into an EPS plate coated with a flame-retardant solution, and spraying hydrogel powder on the EPS plate coated with the flame-retardant solution; the flame-retardant reagent is prepared by mixing a char-forming flame retardant tea polyphenol, a smoke suppressant cane sugar, an organophosphorus flame retardant phytic acid and water according to the mass ratio of 3: 2: 1: 25; the hydrogel powder is prepared by mixing acrylic acid, sodium hydroxide, N, N '-methylene bisacrylamide, potassium persulfate and water according to the mass ratio of 2500: 1120: 5: 8: 8000. The EPS composite material plate prepared by the invention has excellent fire resistance and smoke suppression performance, and also has relatively low density, so that the defect that an organic thermal insulation material cannot consider fire resistance, smoke suppression and low density at the same time is effectively overcome; the preparation method is simple, raw materials are easy to obtain and environment-friendly.

A hot melt adhesive composition, a hot melt adhesive, and a preparation method for the hot melt adhesive. The hot melt adhesive composition comprises a base polymer, a tackifying resin, and an antioxidant. The base polymer comprises a styrene block copolymer, an amorphous α-olefin copolymer, and an ethylene-vinyl acetate copolymer. The tackifying resin is a pure monomer resin. The hot melt adhesive is prepared mainly from the hot melt adhesive composition. The hot melt adhesive has a non-stringing effect during coating. The hot melt adhesive composition or the hot melt adhesive is applied to the industrial assembly or packaging industry.

The invention relates to the technical field of stickers, and provides a food-grade environment-friendly sticker which comprises a printing layer, a base material, a glue layer and release paper or a release film, and the printing layer, the base material, the glue layer and the release paper or the release film are sequentially distributed from top to bottom. By reasonably selecting environment-friendly materials and combining a scientific preparation process, the environment-friendly sticker which is reasonable in structure and excellent in performance and meets the food safety standard is successfully prepared. The sticker not only has good bonding performance and environmental protection performance, but also is simple and convenient in production process and moderate in cost, and has relatively high industrial application value and popularization prospect. Through the implementation of the method, the safety and the environmental protection level of food packaging can be effectively improved, the urgent demand of the market for high-quality green packaging materials is met, and green transformation and sustainable development of the packaging industry are promoted.

The utility model relates to degradable high-barrier double-sided direct plating paper, and belongs to the technical field of packaging materials. Degradable high-barrier double-sided direct plating paper comprises a body paper layer, and is characterized in that a barrier layer I, an evaporation layer and a protective layer are sequentially coated upwards along the upper surface of the body paper layer, and a barrier layer I, an aluminum plating layer, a barrier layer I and a heat sealing layer are sequentially coated downwards along the lower surface of the body paper layer. According to the utility model, a plurality of coatings are matched with one another to fill the paper exhaust holes and seal the paper fibers, so that the paper is subjected to complete coating sealing, the barrier property to gas molecules such as water vapor and oxygen is improved on the whole, and the packaging requirements of different contents and different weights are met. The environment-friendly degradable decorative material has the dual effects of environmental protection, degradability and exquisite printing appearance, meets the two requirements of anti-counterfeiting and attractiveness, and meets the requirements of the novel high-end packaging industry and the decorative material market.

The invention belongs to the technical field of cellulose, and particularly relates to type II bacterial cellulose slurry as well as a preparation method and application thereof. Compared with the prior art, the preparation method has the advantages that the bacterial cellulose gel is modified to be converted into a cellulose type II from a cellulose type I, the stacking structure and the hydrophilic performance of a bacterial cellulose molecular chain are changed, and the bacterial cellulose pulp from the nanometer level to the millimeter level is further obtained through pulping treatment; the product is milky white, odorless, tasteless, controllable in granularity and adjustable in hydrophilic performance, can be quickly dispersed after being added with water and stirred, and can be applied to the fields of preparation of degradable materials, reinforcement of composite materials, papermaking and packaging industry, biomedicine and health, daily chemical industry, cosmetics and the like; and the preparation method greatly reduces the dosage of the poor alkali solvent and the recovery energy consumption, is simple in process, does not need special equipment, and is green and environment-friendly.

1. The name of the design product: electric punch (soft package composite film). 2. The use of the design product: used for packaging industry punching. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view 1.

This utility model provides a rollerball ampoule dispensing device, relating to the packaging industry. It includes a lower shell and an upper shell that cooperates with the lower shell. A cavity is formed between the lower and upper shells to accommodate the ampoule. A sealing plate is provided at the upper opening of the cavity for contacting the ampoule mouth. A rollerball structure is provided on the other side of the sealing plate. A through hole is provided in the middle of the sealing plate, connecting the rollerball structure and the cavity. This application utilizes a through opening at the bottom of the lower shell, a cutting structure, and positioning ribs for guidance and fixation, retaining waste materials and preventing glass fragments from splashing, ensuring safety and the cleanliness of the medication. The combination of the upper shell, rollerball structure, and sealing cap allows the medication to flow evenly from the sealing plate through the through hole to the rollerball during administration. Rolling allows for precise medication delivery, making ampoule medication administration more convenient.

A sleeve for mounting on a mandrel of a commercial printing machine can include distinct annular regions that are integrally formed simultaneously as a unitary structure without a forming mandrel and without any need to be adhered to one another in manufacturing steps separate from the manufacture of each annular region of the completed sleeve. A 3D printing machine and method suitable for one or more of the flexible packaging industry, the offset printing industry, the publication printing industry, the décor printing industry, and the corrugated printing industry, employs a build plate that descends from a horizontal printing plane where each of multiple printing heads extrudes a road cycle of thermoplastic material onto the immediately underlying road cycle of the sleeve.

The application discloses a dictionary proxy cutting surface method for corrugated paper packaging industry and related equipment, and the method comprises the following steps: obtaining parameters, mechanical codes and names of each equipment, and establishing a dictionary table based on the parameters, the mechanical codes and the names; splitting the dictionary table to obtain a business dictionary table and a system dictionary table, and respectively performing self-defined annotation on the business dictionary table and the system dictionary table to obtain a first list annotation and a second list annotation; capturing list data of the dictionary table based on a dictionary cutting surface proxy, and obtaining an identifier of the list data based on the first list annotation and the second list annotation; obtaining target data based on the identifier, and encapsulating and returning the data to a front-end page. The application splits a dictionary table into a system dictionary table and a business dictionary table, simultaneously reforms a cutting surface interface, and places the system dictionary table into a redis cache and the business dictionary table into a query database, so that the pressure of a database is greatly reduced, and the system performance is improved.

The utility model relates to the technical field of carton cleaning production, in particular to an efficient dust removal device for carton cleaning production. Conveying structures used for conveying and moving carton paperboards are installed at the two ends of the machining rack, a dust removal structure used for removing dust of the carton paperboards is installed in the middle of the machining rack, the dust removal structure comprises a dust removal rack fixedly installed on the machining rack, and a plurality of first synchronous air cylinders are installed on the bottom wall of the inner side of the dust removal rack. Through cooperation of the synchronous air cylinder, the adjusting bottom frame and the adjusting top frame, deep dust removal of the bottom of a carton paperboard is achieved, thoroughness of dust removal is guaranteed, dust removal processing can be conducted on the front face and the back face of the carton paperboard at the same time, working efficiency is improved, and the quality of the carton paperboard is guaranteed; the automation degree and efficiency of carton paperboard dust removal are improved, meanwhile, the dust removal quality is guaranteed, and the productivity and the product quality of the packaging industry can be improved.

The present application relates to the technical field of composite hoses for cosmetic packaging, and in particular to a high-barrier composite hose for cosmetic packaging and a method for preparing the same. A high-barrier composite hose for cosmetic packaging, wherein the composite hose comprises, from the outside to the inside, a polyethylene film layer, an adhesive layer, a vacuum sputtered deposited alumina polyethylene film, an adhesive layer, and an antibacterial polyethylene layer; wherein the antibacterial polyethylene layer comprises the following raw materials in parts by mass: high-density polyethylene, low-density polyethylene, metallocene polyethylene, β-cyclodextrin modified titanium dioxide, an antioxidant, an antibacterial agent, and a coupling agent. The high-barrier composite hose for cosmetic packaging of the present application has excellent comprehensive performance, antibacterial performance, and barrier performance, and is also recyclable and reusable, and can provide an efficient, safe, and environmentally friendly packaging solution for the cosmetic packaging industry.

The utility model relates to the technical field of packaging equipment, in particular to heat-sealing packaging equipment which is provided with a conveying mechanism and a film covering heat shrinkage mechanism, a negative pressure generating mechanism is arranged in the conveying mechanism, negative pressure can be generated between a heat shrinkage film and a bottom film, meanwhile, a product is heat-sealed between the heat shrinkage film and the bottom film through the high temperature of a heating pipe, and therefore the packaging efficiency is improved. The automation degree is high, heat sealing efficiency and quality are improved, and the requirements of the modern packaging industry are met; in addition, the film covering thermal shrinkage mechanism comprises a movable support, a lifting driving assembly, an unwinding assembly and a grabbing assembly, and the grabbing assembly pulls out the thermal shrinkage film in the unwinding assembly and covers the lower portion of the movable support. The lifting driving assembly drives the movable support to move downwards and enables the pulled-out heat shrinkage film to cover the upper end of the product so that subsequent negative pressure heat sealing packaging can be conveniently carried out, the packaging efficiency is improved, and the device is suitable for various product sizes. And the heat shrinkage film is pulled out through the grabbing assembly, the phenomena of jamming and deviation are avoided, and the heat sealing packaging quality is improved.

The invention discloses high-solid-content water-soluble starch glue suitable for printing or packaging industry and a preparation method thereof, and belongs to the field of glue, the high-solid-content water-soluble starch glue is mainly prepared from the following components: 100 parts by weight of modified starch, 50-450 parts by weight of functional filler, 0.01-10 parts by weight of surfactant and 3-20 parts by weight of fiber, 10-30 parts by weight of a drying agent and 120-200 parts by weight of water, and the solid content of the high-solid-content water-soluble starch glue is greater than or equal to 70 wt%. No caustic soda or borax participates in the gelatinization link, the solid content is high and is not smaller than 70 wt%, the total thickness and the compressive strength can be increased after the adhesive is used for adhering an adhered object, and moisture absorption and deformation are avoided.