495 results about "Paper sack" patented technology

The invention discloses a preparation method for a chitosan fruit moistureproof freshness protection package, which comprises the following steps; firstly, performing pulping, beating, refining, preparing and size mixing on wood pulp and/or straw pulp and manufacturing with pulp to obtain paper through a paper machine; secondly, preparing waterproof emulsion; thirdly, coating the waterproof emulsion on the surface of wood pulp paper and obtaining fruit bagging paper with a waterproof layer through baking processing; fourthly, spraying a chitosan liquid on the inner surface of the fruit bagging paper with the waterproof layer and drying to obtain the paper; and fifthly, cutting the paper into an appropriate size and manufacturing to obtain a paper package. According to the invention, the manufactured product has the advantages of collision resistance, moisture protection, bacterium resistance and freshness retaining, overcomes the defects that the chitosan has poor water-solubility, is difficult in production operation, influences the flavor of fruits and vegetables and is difficult to dry, and is suitable for application to various fruits.

The present invention relates to a plastic container which has a good biodegradability and a moisture permeability manufactured by using a novel polyester resin composition under a specific injection and extrusion molding conditions in the forms of a bottle, a blister pack, a medicated paper pouch and the like, which thus enables to preserve the contents of the container such as pharmaceutical drugs, food and beverages dry without the addition of desiccants and can be disposed of without causing environmental contamination.

The invention discloses an automatic double-sided deburring and cleaning-drying production line. The automatic double-sided deburring and cleaning-drying production line comprises an electric appliance cabinet controlling a whole system to run, a loading manipulator, a first deburring machine, a second deburring machine, a cleaning-drying all-in-one machine and an unloading manipulator, wherein the loading manipulator is arranged just above an input end of the first deburring machine, and conveys a workpiece onto an advancing rail of the first deburring machine through a magnetic attraction disc of the loading manipulator; the workpiece enters an input port of the second deburring machine through a magnetic turnover roller of the first deburring machine; the first deburring machine and the second deburring machine are connected with a paper bag-type water circulation and filtration system separately and form a circulation system; a hidden demagnetizer is arranged on an output part of the second deburring machine; the hidden demagnetizer demagnetizes the workpiece, and the workpiece enters an input end of the cleaning-drying all-in-one machine; the unloading manipulator is arranged in the vertical direction of an output end of the cleaning-drying all-in-one machine; and whole equipment is operated through a PLC programming controlled push-to-start machine. The automatic double-sided deburring and cleaning-drying production line is energy-saving and environment-friendly due to the complete water filtration and circulation system; and the production line is safe and stable, high in machining accuracy, high in machining efficiency, intelligent and high in efficiency due to totally-enclosed running and a transparent observation window.

The invention discloses a paper bag machine and an automatic bottom board placing device of the paper bag machine. The automatic bottom board placing device comprises a paper bag conveying mechanism, a bottom board distribution mechanism and a bottom board conveying mechanism which are all sequentially connected to the paper bag machine. Through the combined application of the paper bag machine, the paper bag conveying mechanism, the bottom board distribution mechanism and the bottom board conveying mechanism, bottom boards can be automatically and independently placed in corresponding paper bags before the paper bags are pasted to barrels and the bottoms are folded or pulled for forming, the problem that the automatic bottom board placing function of a traditional paper bag machine is not available is solved, convenience is provided for achieving paper bag full-mechanical production of the paper bag machine, a large amount of labor and a large number of material resources are saved, and production efficiency is greatly improved.

The invention discloses a carry bag machine and an automatic head card gluing device thereof. The automatic head card gluing device of the carry bag machine comprises a fixed frame, a paper inputting and glue printing assembly, two head card conveying and gluing assemblies and a driving device, wherein the paper inputting and glue printing assembly, the two head card conveying and gluing assemblies and the driving device are arranged on the fixed frame. The paper inputting and glue printing assembly comprises a first paper conveying roller, a second paper conveying roller, a glue printing roller and a paper pressing roller which are rotationally arranged on the fixed frame. Each head card conveying and gluing assembly comprises a head card support fixedly arranged on the fixed frame, wherein a head card driving shaft and a head card driven shaft are rotationally arranged on the head card support. The driving device comprises a paper bag driving device used for driving the paper bag inputting and glue printing assembly to work and a head card driving device used for driving the head card conveying and gluing assemblies to work. As the carry bag machine and the automatic head card gluing device of the carry bag machine are adopted, a great deal of manpower is not needed, the working efficiency is high, the finished product ratio is increased effectively, and the requirement for large-scale batch production is met.

A filling device of a dual-layered filling and packing device having a cotton paper device within the packing device which guides cotton paper via a guide rack to fold the paper and to fill a paper bag with fixed amount of tea leaves, by means of a roller, the paper bag with tea leaves being sealed at the edges thereof, and by means of a gripping structure, the tea bag being held to a funnel tube of the folding structure, a plurality of rollers delivered packing foil from an insertion section through space between a folding slot and the funnel tube, characterized in that the gripping structure composes a magnetic cylinder interconnected to a Y-shaped pneumatic cylinder and the gripping section is extended with two corresponding folding board and the folding structure comprises a folding slot covered a gap outside the funnel tube, the cross-section of the funnel tube has a flat body and the folding slot is a U-shaped plate body having a top end folded outward to form the insertion section.

An insecticidal coating composition is provided for use on cellulosic substrates such as packaging materials to provide protection against insects. The insecticidal coating includes a polyvinyl acetate emulsion; a vinyl acetate ethylene copolymer emulsion; and an insecticide having an LD50 value of between about 14,500 to 15,500 mg/kg. The coating may also include additives such as fillers, defoaming agents, leveling agents, preservatives, and humectants. The insecticidal coating composition may be applied to a variety of cellulosic substrates including corrugated board, linerboard, paper, paper bags, wooden pallets, and paper composite pallets.

The invention relates to a bagging machine for apple paper bags, belonging to the field of farm machinery. The bagging machine comprises a main frame, a mouth supporting system, a mouth closing system and a bag basket, wherein the mouth supporting system comprises a transverse expansion bend, a longitudinal expansion bend, a bag supporting mechanism and a rocker arm; the mouth closing system comprises an inner mouth closing mechanism and a side mouth closing mechanism; and the bag basket is an opened paper bag basket. The bagging machine has the advantages of being simple in operation and convenient to use, and is capable of greatly reducing the labor intensity of workers, thereby reducing the investment cost of apple production.

The invention discloses a full-automatic packing machine for a flat bottom paper bag. The full-automatic packing machine comprises a bag containing device and a bag sealing device; the bag containing device comprises a rotation large disc, a bag taking mechanism, a bag neatening mechanism, a padding mechanism, a material neatening mechanism and an angle folding mechanism; and the bag sealing device comprises a transverse base, a tailoring mechanism, a first edge rolling mechanism, a second edge rolling mechanism, a rolling mechanism, a gluing mechanism, a first press fit mechanism and a second press fit mechanism. Compared with the prior art, the packing machine can achieve bag taking, bag feeding, bag opening, foot opening detection, quantified filling, dust removal, jolt ramming, angle folding, tailoring, edge rolling, glue coating, press fit, weighing detection and other functions at a time, the full-automatic packing process of the flat bottom paper bag is completed, the packing speed of the flat bottom paper bag is greatly increased, and the packing efficiency is improved.

The invention provides a piece of two-sided offset paper for paper bags. The two-sided offset paper is prepared from raw materials including fiber pulp and chemical additives, wherein the fiber pulp comprises the following components in percentage by weight: 50-100 percent of broadleaf wood bleached chemical pulp, 0-50 percent of needlebush bleached chemical pulp and 0-30 percent of high-yield pulp, and the Schopper-Riegler degree is 23-36SR; the chemical additives include the following components in terms of kg/ton of paper: 70-500kg of packing and 8-20kg of an internal sizing agent. According to the two-sided offset paper provided by the invention, the matching and pulp grinding of fiber are adjusted by selecting the types of fibers in the production process, and the brooming degree of pulp grinding is improved; meanwhile, the pressure of calendaring at the rear stage is adjusted and is controlled to be 10-30kg/cm<2>, the surface properties of the paper are improved, and the strength is effectively improved; according to the novel two-sided offset paper for the paper bags, the folding endurance range is 100-500 times, and the pressure of a squeezing part of a paper machine is increased, so that the traction force of paper at the rear section is reduced, the calendaring degree of a curling part is reduced, the stiffness of the paper is improved, and finally the printing performance of terminal customers is improved.

The invention relates to the technical field of packaging, and discloses a production process of a degradable paper bag. The degradable paper bag comprises a paper bag main body; and the paper bag main body comprises packaging paper and a waterproof film. The production process of the paper bag main body comprises the following steps: S1, a film spraying machine is adopted for conducting hot melting on the waterproof film, then spraying the waterproof film on the surface of the packaging paper for coating to form a waterproof layer, and carrying out hot melting on the waterproof layer for primary bonding with the packaging paper; and S2, blowing out hot air by using a hot air bag making machine, so that the waterproof film is further bonded with the packaging paper to prepare the water-proof paper bag. Compared with the prior art, the advantages are as following: the packaging paper is coated with the water-proof film using the film spraying machine, so that the water resistance of thepackaging paper is improved, and in addition, a toughening film is compounded, so that the toughness of the paper bag is improved.

The invention relates to an agricultural pneumatic aerial fruit bagging machine and belongs to the technical field of manufacturing of agricultural garden machinery and tools. The agricultural pneumatic aerial fruit bagging machine comprises a housing, a sleeve, a main cylinder, a fastener ring and its extension arm, a support pillar, a manual rocker, a symmetrical measuring tape, a back-pack support and the like. The housing is driven to rise to specified height by charging of a large cylinder and elongating of a piston rod; the housing is swung in a vertical plane and aligned with an apple and a rail entry, by adjusting a telescopic device; small cylinders in the housing positively charge for driving, bearings and paper bag hooks are controlled, sliders are moved in a fixed direction on a rail, and a single bagging-sealing process is finished; a spring below a supporting base drives a paper bag holder and remaining paper bags to rise along a paper bag support pillar to specified height; the parts then reset. The agricultural pneumatic aerial fruit bagging machine has the advantages such as reasonable design, simple structure and convenience in use; labor intensity is reduced for laborers, and operational safety is guaranteed for the laborers.

The invention discloses a method for preparing composite wrapping paper from pineapple leaf fibers and banana caulo pulp. The method comprises the following steps: separately preparing the pineapple leaf fibers and the banana caulo pulp at first; and then mixing the pineapple leaf fibers and the banana caulo pulp according to a ratio of 1: 50 to 1: 100 to prepare the composite paper. During preparation of the refined pineapple leaf fibers, a combined ultrasonic wave-biological enzyme process is preferred for degumming, so high efficiency and low environmental influence are realized. The invention also discloses a process for preparing the composite paper by braiding the pineapple leaf fibers into a grid which is used as a keel and then mixing the keel with the banana caulo pulp. The prepared paper has high strength, and the environmental protection, physical property detection and antibacterial effect detection results of the paper can meet requirements on packaging paper bags.

The invention discloses a forming device for punching a gift rope hole in a portable bag production line. The forming device is characterized in that a long groove and two symmetrical round holes are formed in a stand; a piston rod is connected with an ejection rod; the head of the ejection rod is hinged with a connecting rod; the other end of the connecting rod is hinged with the middle of a receiving plate; the bottom end of the receiving plate is hinged with a travel plate; two ends of the travel plate are inserted into the long groove of the stand; a spring is arranged between the travel plate and a piston; swing shafts are sleeved in the round holes of the stand; a pair of gears with the same tooth number is arranged at the rear ends of the swing shafts; two swing arms are symmetrically arranged on the swing shafts; punching heads are arranged on the swing arms; and a dual-lug connector at the head of a swing tail air cylinder is connected with a force arm which is connected with one swing shaft. During work, the travel plate is pushed by the spring to move forwards along the long groove of the stand, the receiving plate also moves forwards and is inserted into a bag opening of the portable bag; the force arm drives one swing shaft to rotate; another swing shaft is driven by the gear at the rear end of the previous swing shaft to rotate reversely; and the swing arms on the swing shafts drive the punching heads to swing towards the direction of the receiving plate, and thus the aim of punching is achieved.

The invention discloses a paper bag machine and a paper upper-opening folding device. The paper upper-opening folding device comprises a support assembly and an upper-opening folding assembly, wherein the support assembly comprises a support rod, a paper through plate and a paper cushion block, the paper through plate is arranged on the upper surface of the support rod, the outer end of the paper through plate is bulged on the outer side surface of the support rod, the rear side surface of the paper cushion block is in close fit with the support rod and the inner end surface of the paper through plate, and the upper surface of the paper cushion block is in the shape of a downwards-inclined slope; the upper-opening folding assembly comprises a stop plate and a bent piece, the stop plate is fixed at the upper end of a stop plate fixing rod, the bottom surface of the stop plate is in fit with the upper surface of the paper cushion block, the bent piece is arranged at the upper end of the stop plate, a slide groove is formed in the upper end of the bent piece, and the upper and lower positions of the bent piece can be adjusted with the slide groove. According to the paper bag machine and the paper upper-opening folding device disclosed by the invention, a paper upper-opening folding process is finished for the conveyed paper according to upper-opening indentations by using the stop plate and the bent piece; the paper bag machine and the paper upper-opening folding device are simple in structure, convenient for operating personnel to assemble and debug the device, capable of realizing the upper-opening folding process on the paper bag machine, multi-purpose, capable of increasing the production efficiency, and wide in practicability.

The invention relates to a honeycomb buffer shockproof, moisture-proof and flame-retardant express bag or packaging bag and a paper bag production line thereof. The express bag or packaging bag is formed by folding and adhering composite paper, wherein the composite paper comprises a middle layer, an upper surface layer and a lower surface layer. The express bag or packaging bag is characterized in that the upper surface layer and the lower surface layer are both kraft paper, the middle layer is in a corrugated shape formed by stretching honeycomb paper, and the three layers are connected through glue; the honeycomb paper is flame-retardant paper with a plurality of longitudinal tearing lines and/or cutting marks evenly distributed on the upper face, the longitudinal tearing lines and/or cutting marks are distributed in a matrix mode, and every two adjacent rows of longitudinal tearing lines and/or cutting marks are staggered; and the honeycomb paper is stretched, the longitudinal tearing lines and/or cutting marks are torn open, the flame-retardant paper between every two adjacent tearing lines and/or cutting marks is twisted, and the corrugated shape is formed. The corrugated shape formed by stretching the honeycomb paper is adopted for replacing previous small bubbles, buffer and shockproof functions are achieved, and meanwhile the whole express bag or packaging bag is madeof paper, is easy to degrade and cannot affect the environment.