107results about How to "Easy to heat seal" patented technology

The invention discloses a blend film of linear low-density polyethylene and ethylene-vinyl alcohol copolymer and a manufacturing method thereof, which relates to a blend film and a making method thereof. The invention solves the problems that LLDPE and EVOH are incompatible and require a bonding layer in the middle when being used together. The blend film of the invention is made by linear low-density polyethylene, ethylene-vinyl alcohol copolymer, calcium carbonate master batches, dicumyl peroxide, dibenzoyl peroxide, dimethylformamide and a maleic anhydride monomer or acrylic acid. The manufacturing method of the invention includes that modified master batches are first prepared to be then used for manufacturing the blend film of the invention. The blend film of the invention can be directly obtained without adding a bonding layer between LLDPE and EVOH when in use of raw materials of LLDPE and EVOH.

The invention relates to a pressing mold for two-layer edge curling opening sealing of a sealed aluminum foil lunch box. The pressing mold is characterized by comprising an upper mold part, a lower mold part and an upper and lower mold guide part, wherein the upper mold part comprises a mold mounting plate, an upper mold plate, an upper piston, an upper shearing opening seat, an upper shearing opening, an upper female mold and an upper female mold installing plate; the lower mold part comprises a lower edge pressing ring, a lower female mold, a lower female mold base, a lower air cylinder, a lower air cylinder ejector rod and a lower mold plate; the upper and lower mold guide part comprises guide rods and guide sleeves; the shape of the upper female mold is matched with that of an inner hole of the upper shearing opening for achieving guiding, the upper female mold installing plate is connected with the upper female mold, the upper piston acts on the upper female mold installing plate, the upper shearing opening seat is connected with the upper shearing opening, the upper mold plate is connected with the upper shearing opening seat, an external press is connected with the upper mold plate, and the whole upper mold part is driven to upwards and downwards move; and the shape of an inner hole of the lower edge pressing ring is matched with that of the lower female mold for achieving the guiding, an edge curling groove is formed in the lower edge pressing ring, the lower air cylinder pushes the lower edge pressing ring to do rebounding type movement through the lower air cylinder ejector rod, the lower female mold is fixedly arranged on the lower female mold base, and the lower female mold base is fixed on the lower mold plate.

The invention discloses a preparation method of a flexible packed super-capacitor. The improvement of the invention includes that a liquid injection pipe with a copper bar is inserted into one side of an aluminum-plastic film bag after an electrical core is arranged in the bag, the open part and the joint part of the bag and the pipe are heat-sealed under the temperature of 200-300 degrees Celsius; the copper bar is pulled out and the bag is vacuumized to be under 0.05-0.09MPa, then is injected with electrolyte and laid aside for 8-12 hours under normal temperature, and then has formation process; the bag is vacuumized along with the formation, meanwhile, the inside pressure of the bag is kept within 0.01-0.05MPa, and the lost electrolyte is supplemented after the formation; finally, the protruding part of the liquid injection pipe is released from heat seal. The super-capacitor produced in the method has no gas expansion, avoids potential explosion danger, and guarantees good security and reliability; furthermore, the invention can ensure sufficient capacitance, improves the coherence of single body combination and cycle life of the module, and obtains excellent charge-discharge performance.

The invention relates to a high-insulation low-static anti-wrinkle heat-seal type functional film which comprises the following components of PVC, stabilizing agent, H-16, AC316, MBS, oxidized polyethylene, silicon dioxide, ACR and epoxidized soybean oil, wherein PVC is polyvinyl chloride and poly aluminum hydrogen; the stabilizing agent is a common agent, in particular OM1; AC316 is tissuemat E; MBS is the terpolymer of methyl methacrylate (M), butadiene (B) and styrene (S); and ACR is acrylate copolymer. The components are fully mixed and then made into a film by using a blow molding machine. The high-insulation low-static anti-wrinkle heat-seal type functional film is prepared by the following steps of: fully mixing the components in proportion by weight and finally loading in the blow molding machine. The products produced by the technology has the advantages of no poison, high diaphaneity, bright surface, impact resistance, tear resistance, no combustion, no moisture absorption, and simple and firm heat seal, and is particularly suitable for meeting requirements of various high-speed automatic packaging machines.

The invention discloses a vacuum sealer and a bag-cutting type sealing method. In the vacuum sealer, at least one cutter device is slidably installed at an upper cover; a heat sealing strip and a vacuumizing groove are arranged at the front side of the upper part of the upper cover; the upper cover or a lower cover is provided with a bag body storage chamber; a dismountable automatic rewinding shaft is rotationally installed in the bag body storage chamber; an elastic rewinding mechanism used for driving the automatic rewinding shaft to rewind and an elastic one-way locking mechanism used for locking the automatic rewinding shaft are installed at the end part of the automatic rewinding shaft; the cutter device protrudes from the bottom surface of the lower cover; and after the upper cover is locked on the lower cover in a covering way, a cutter moves back and forth at one side of the heat sealing strip or one side of the vacuumizing groove and is used for cutting a bag body which is pressed tightly between the upper cover and the lower cover. The vacuum sealer disclosed by the invention is simple in structure; the bag is cut at the original heat sealing strip or vacuumizing groove of the lower cover, so more convenient bag cutting is realized; after being cut off, the bag body can be automatically rewound by a vacuum packaging bag roll after the cover is opened, so the operation steps of a user are reduced, and the vacuum sealer is simpler, more convenient and quicker to operate.

A fluid dispensing device includes a container made from a flexible material defining an interior fluid storage region, a flexible metering housing having a metering chamber in fluid communication with the fluid storage region, the flexible metering housing having a button heat sealed to a base plate, a unidirectional intake valve disposed between the container and the flexible metering housing and a unidirectional output valve in fluid communication with the flexible metering housing. The base plate has an extension with a recessed notch, a first tapered portion, and a second tapered portion opposite the first tapered portion with respect to the recessed notch, and the button has an extension and a notch corresponding to the extension and the recessed notch of the base plate.

The invention provides a garbage bag hot melting sealing device. The garbage bag hot melting sealing device comprises two swing arms. One ends of the two swing arms are rotationally connected, so that a sealing space for containing a garbage bag is formed between the two swing arms. Heating sheets are mounted at the other opposite ends of the swing arms. The heating sheets are connected with a hot melting circuit. The heating sheets are used for fusing and hot-sealing a garbage bag opening when the two heating sheets rotate to the center of the sealing opening. According to the garbage bag hot melting sealing device, hot sealing of the garbage bag opening is convenient, and the quality and reliability of garbage bag sealing can be improved.

The invention discloses a heavy packaging film. The heavy packaging film is formed by co-extruding a first layer, a second layer and a third layer, wherein the first layer is prepared from the following raw materials in percentage by weight: 45%-55% of metallocene polyethylene, 20%-30% of low density polyethylene and 17%-27% of linear low density polyethylene; the second layer is prepared from the following raw materials in percentage by weight: 60%-70% of linear low density polyethylene and 27%-37% of high density polyethylene; and the third layer is prepared from the following raw materials in percentage by weight: 45%-55% of metallocene polyethylene, 20%-30% of low density polyethylene and 17%-27% of linear low density polyethylene. The heavy packaging film provided by the invention has the advantages of high tensile strength and tearing strength, easiness of being hotly sealed, good anti-blocking property and excellent anti-falling performance and stacking performance.

The invention provides a bag sealing device and belongs to the technical field of bag production. The bag sealing device comprises a bag taking mechanism and a bag sealing mechanism, wherein the bag taking mechanism is used for grabbing a packaging bag waiting for heat sealing and transferring the packaging bag to a bag sealing station; the bag sealing mechanism comprises a first linear driver anda second linear driver oppositely arranged on the two sides of the bag sealing station; a lining plate is fixedly arranged at the driving end of the first linear driver; a heating plate is fixedly arranged at the driving end of the second linear driver; the lining plate and the heating plate are in parallel and can realize mutual involution under the driving action of the first linear driver andthe second linear driver; and the lining plate and the heating plate realize mutual involution to carry out heat sealing on the opening of a to-be-heated packaging bag on the bag sealing station. Thebag sealing device can realize automatic continuous operation of bag feeding, opening sealing and bag discharging in sequence of a plurality of packaging bags to improve the production bag sealing efficiency and quality.

The invention provides an environment-friendly anti-crease shrink package film, and relates to a package film. The environment-friendly anti-crease shrink package film is characterized by comprising the following components by weight: 100KG of thermoplastic starch (TPS), 350KG of LLDPE (Linear Low Density Polyethylene), 1.9KG of stabilizer, 2KG of pentaerythritol mixed aliphatic ester, 3KG of methyl methacrylate-butadiene-styrene copolymer, 0.01KG of silicon dioxide, 0.6KG of methyl methacrylate and 1KG of epoxidized soybean oil. The environment-friendly anti-crease shrink package film has the beneficial effects that the product produced by the process is toxic, highly transparent, bright in surface, impact-resistant, tear-resistant, non-combustible, nonhygroscopic, and easy and firm for hot sealing, and thus especially capable of meeting the requirements of various high-speed automatic packaging machines. As a result, the environment-friendly anti-crease shrink package film can be widely applied to the cigarette industry and the printing industry, and to the packages of medicine, audiovisual products and various boxed products, and is capable of achieving the effects of moisture protection and dust prevention.

The invention discloses a heat sealing device of a food packaging bag, and relates to the technical field of packaging auxiliary equipment.The heat sealing device comprises a heat sealing rack and two heat sealing mechanisms, the top of the heat sealing rack is provided with a top frame, and each heat sealing mechanism comprises a side pressing support, a side pressing roller, a flattening piece and a heat sealing rotating supporting rod; the side pressing roller is arranged at the end, away from the top frame, of the side pressing support, the leveling piece is slidably arranged on the rod wall of the side pressing roller, the side pressing roller is provided with an elastic returning piece, the heat-sealing rotating supporting rod penetrates through the middle of the side pressing support and is rotationally connected with the side portion of the side pressing support, and a heat-sealing melting pressing plate is arranged at the bottom of the heat-sealing rotating supporting rod; a push-pull rod is arranged between the end part of the flattening piece and the heat-sealing rotating support rod; the device further comprises a driving piece and a flattening shifting piece. The flat shifting piece is arranged on the top frame and located between the two heat sealing mechanisms. The food packaging bag heat sealing device is simple in structure, the heat sealing flatness of food packaging bags can be improved through flatness and side pressure, then the heat sealing effect is improved, operation is convenient and fast, and practicability is high.

The invention relates to the technical field of adhesive tapes for lithium battery cells, in particular to an expansion adhesive tape for lithium battery cells, which comprises a base material and glue, the glue is arranged on the inner side surface of the base material, and the adhesive tape expands when encountering electrolyte, so that the cells can be fixed, and the existing termination adhesive tape is replaced. Compared with other surface treatment modes, the base material is formed by casting and coating non-acid-resistant and degradable films such as CPP, OPS, TPU, PLA and PO, off-line rewinding is not needed during coating, coating is carried out between longitudinal stretching and transverse stretching, a transverse stretching section is used as a drying oven to dry coating liquid, and the production efficiency is high; the coating is uniform, the coating is thinner than off-line coating, the coating effect is better, the coating cost can be obviously reduced, the surface tension of the film subjected to corona treatment is gradually attenuated along with time, the surface of the film subjected to coating treatment does not have the corona attenuation problem, and the acrylic acid glue is selected for coating, so that the adaptability is high, the drying speed is high, and the coating quality is high. The adhesive force to a base material is strong, and the leveling property and transparency are good.