1086 results about "Plastic wrap" patented technology

An antistaling plastic film for fruit and vegetable is prepared from the air-permeable inorganic moisture penetrating agent, antibacterial agent, ethylene absorbing and decomposing agent, and resin. Its advantage is high antistaling effect.

A container for dispensing individual plastic wrap covers and a method of assembling such a container are disclosed. The container may be generally parallelopiped in shape and may include a hinged lid initially secured to the container along a score line. The lid may be torn along the score line and pivoted at the hinge to allow the user to access a smaller opening provided within the container. The smaller opening may be provided within a fifth flap provided integrally with the remainder of the template used to form the container. The opening may be sufficiently large to allow for the plastic wrap covers to be removed, but may be sufficiently small so as to prevent or substantially limit the removal of more than one plastic wrap cover at a time.

In one embodiment, a system for removing a plastic wrap from a cylindrical module includes a conveyor transporting the cylindrical module toward a disperser with the cylindrical axis of the module parallel to the direction of conveyor movement. In another embodiment, the disperser is a travelling head disperser thereby providing relative movement between the modules and the disperser. The direction of the wrap around the module is determined and the cover is removed during rotation of the module, either by unwrapping the plastic or by slitting the plastic and then rotating the module. The equipment used to handle a cylindrical module is moved out of the path of movement of a conventional rectangular module so an installation can handle both rectangular and wrapped cylindrical modules.

The invention relates to an antimicrobial moisturizing degradable porous gel preservative film and a preparation method and application thereof. The gel preservative film is formed by polymerizing a carboxyl or amido contained functional monomer, an inorganic nano-powder, biodegradable natural polymer, calcium-ion-contained salt, an inorganic antimicrobial agent and a reductant-oxidant in a water solution. A gel three-dimensional network porous structure is used for spontaneously adjusting gas components inside the film, and the natural polymer is adopted, so that the antimicrobial moisturizing degradable porous gel preservative film has the advantages of being wide in source, biologically degradable, good in film forming property and the like; due to the high antimicrobial property of the inorganic antimicrobial agent, the defects that a traditional preservative film is high in pollution, short in storage period, high in cost, hard to recycle, complex in technology and the like are avoided, and the antimicrobial moisturizing degradable porous gel preservative film can partially replace cardboards, water absorption sponges, ice blocks or plastics and other preservative materials. The preparation method is easy and convenient to implement, capable of promoting large-scale production, long in preservation time, good in permeability, and capable of effectively slowing down the food rotting speed, thereby being applied to food, fruit, vegetable transportation, storage, delivery, assembling, disassembling, storage and preservation in the edible process.

A composite hockey stick blade including a fiber reinforced, high-density foam polymeric core material overlaid with a plastic wrap. The fiber reinforcement material, in the form of a plurality of milled or long fibers, provides increased toughness and stiffness of the high density polymeric foam core material. The hockey stick blade may be utilized as a replacement blade for a two-piece hockey stick, or may be a portion of a one-piece hockey stick.

The invention relates to a method for producing a nano-antimicrobial preservative film for fruits and vegetables, and belongs to the agricultural product and food preservation technical field. The method is characterized in that: 60 to 80 percent of polyethylene (wherein, the adding proportion of linear low density polyethylene and low density polyethylene is 3 to 1), 10 to 20 percent of ethylene-vinyl acetate copolymer, 2 to 5 percent of nano-antibacterial master batch, 2 to 7 percent of anti-condensation master batch, and 2 to 5 percent of degradable master batch are added. The nano-antimicrobial preservative film is produced by adopting a film blowing method, has the functions of bacteriostasis and spontaneous modified atmosphere, and contributes to prolonging the preservation storage period of the fruits and the vegetables and improving the commercial value of the fruits and the vegetables.

A system wherein plastic wrap on round bales of cotton is partially slit starting at one end of the bale and continuing to a location offset from the opposite end of the bale. One or more partial lengthwise slits allow the cotton to fall into a gin input hopper in a controlled manner and maintain the entire wrap, including any non-adhered inner tail remnants, attached to an intact circumferential wrapper portion at the end of the bale opposite the slit end. The non-slit wrapper end portion is pulled from end of the bale, and the remaining cotton material drops into the receptacle free of contamination by any wrap material.

The invention discloses a biodegradable preservative film material which contains polyhydroxyalkanoate. The invention also discloses a preservative film prepared by the material, wherein the preservative film has a proper penetration rate and a good oxygen blocking function, so that some fruits and vegetables can retain proper moisture but not be contact with oxygen to prolong the preservative time; and in addition, the biodegradable preservative film material has a good preservative effect, and can be completely biodegraded after the preservative film is discarded after use, and pollution to the environment is not caused.

A fruit and vegetable millipore preservative film comprises the following components of 100 portions of low-density polyethylene resin, 20 portions of ethene-vinyl acetate resin, 10 portions of linear polyethylene resin, 13 portions of superfine calcium carbonate, 8 portions of superfine medical stone, one portion of Tween 80, 0.5-1.5 portions of antifogging agent, 1.5 portions of SWJU-1 anlistatig, 0.5 portions of antioxidizer1076 and 0.6 portions of polyethylene wax. After organized processing by acetic acid, inorganic functional materials are used to prepare master batch together with polyethylene base material and other functional components by coextrusion; the materials are mixed through diatexis according to the proportion; blow molding is carried out on a single screw extruder; a film is formed through bidirectional biaxial tension in a longitudinal and transverse way; and the rotate speed of the screw and the traction speed are adjusted to ensure that the aperture of the millipore of the formed film is 0.1-3 microns, and the poriness is 40-55 percent. The manufactured film has bidirectional adjusting ability of O2 and CO2, and therefore, when used for small-package storage, the film can spontaneously adjust air and has good moisture permeability without condensation of moisture in the bag.

This invention refers to the preservative film for fruits and vegetables, the method and the equipment. It is to spread a coat of preservative material on the ordinary sheet film and the preservative material includes the film forming matter, organic acid, sterilization preservative, bond and active chemicals, endows the preservative film with antibiotic antiseptic property and adjusting the properties of air and water freely to the preservation environment and makes the ordinary sheet film a kind of preservative film with special preservative function. Its equipment includes pressure roller, rolling machine, surface treatment installation, bracket and tectorial membrane implement. Behind the original velum there is a two-class pressure roller, then surface treatment installation and tectorial membrane implement. On the both side of the tectorial membrane implement there are supporting rollers. The last is a rolling machine, which is driven by an electromotor. This kind of preservative film has good functioning and the production procedure is fully automatic.

A wrap film cutting apparatus includes a guide rail and a sliding cutter slidably mounted on the guide rail. The sliding cutter is provided with a blade mounted therein covertly. The guide rail is covered with an attractive layer made of a polymeric material at a top surface thereof for attracting a wrap film to be cut. Accordingly, the wrap film cutting apparatus can facilitate smooth cutting action to further enhance convenience for the user.

The invention discloses a controllable-respiration preservative film and a preparation method thereof. The method comprises the following steps: dissolving a water-soluble polyhydroxy plasticizer in water, adding the reaction raw material, heating until the raw material is completely dissolved in water, dispersing at high speed, and cooling to 50-70 DEG C to prepare a solution for running filming; and running the solution for running filming onto a steel belt on a running production line via a die head, and drying to obtain the controllable-respiration preservative film. The controllable-respiration preservative film is prepared from the reaction raw materials in percentage by mass: 60-80% of polyvinyl alcohol, 10-30% of water-soluble polyhydroxy plasticizer, 1-5% of moisture respiration regulator, 1-3% of compatilizer, 3-10% of water retention agent and 0.5-3% of assistant. The preservative film has high barrier property for oxygen and nitrogen sources; the bidirectional permeation exchange power for moisture can be effectively regulated and controlled through the raw material formula; and thus, the preservative film can ensure free respiration and moisture exchange of fruits and vegetables in the preservation process.

The invention relates to a water soluble preservative film for fruits and vegetables and a preparation method of the preservative film. The water soluble preservative film for the fruits and vegetables is mainly prepared by the following materials in percentage in weight: 50 to 80% of polyvinyl alcohol with alcoholysis degree of less than 90%; 10 to 30% of polyhydroxy plasticizer, 1 to 5% of auxiliary film forming agent, 3 to 8% of low temperature antifreeze agent, 3 to 10% of adsorbent filling agent and 0.3 to 2% of film-forming adding additive. The preparation method comprises the following two steps of: 1, after metering contents of components of the preservative film in the formula, obtaining a uniform aqueous solution with concentration of 15 to 25% in water; and 2, uniformly casting the prepared solution on a clear steel band, and drying the solution to obtain the film through a dried drying tunnel with temperature of 120 to 180 DEG C. The preservative film has a high barrier property against oxygen, carbon dioxide and nitrogen and the like, and has a high bidirectional permeable exchange capacity for steam, thereby guaranteeing free breathing and water exchange of the fruits and vegetables in a preserving process.

A system and kit of components for winterizing plants and trees, where the invention comprises a skeletal frame formed by plural first tubular members, each having an upper end and a lower end. When assembled, the respective lower ends are spaced apart and positioned vertically and anchored within the ground surrounding the plant or tree. Joined between adjacent first tubular members are plural second tubular, horizontally oriented, members to form a generally square skeletal frame. About the skeletal frame is a light-transmitting plastic wrap. Overriding the skeletal frame is a top frame, preferably pivotal about a pair of upper ends, to allow access to the protected plant or tree. Additionally, the invention contemplates a cover, such as a plastic wrap or canvas-like material over the top frame to ensure complete protection of the plant or tree. Finally, and most significantly, the invention includes a hydro heat transfer system that extracts the inherent heat from the ground and the heated air within the skeletal frame to provide additional protection against sub-freezing temperatures.

The invention provides a tray type automatic packing production line for a vegetable plastic wrap. The production line comprises a vegetable aligning device, a tray picking and conveying device and a fresh-keeping packing device; the harvested vegetables are respectively separated and transported through a vegetable harvesting belt; the vegetables fall the vegetable aligning belt; a cam and an aligning belt baffle are in tangent fitting to enable the whole aligning belt baffle to swing, and then the vegetable aligning belt conveys the aligned vegetables to a vegetable receiving box; a rotating jaw rotates to shift the vegetables into an opening below the vegetable receiving box and then the vegetables fall down; a cutting plate is matched with a cutting rod I and a cutting rod II; the cutting plate linearly moves to drive the cutting rod I and the cutting rod II to move opposite to a tray II in the middle part of the whole device along a linear slide rail III; then the vegetables and the tray II can be wrapped with the plastic wrap, and the plastic wrap can also be cut. According to the tray type automatic packing production line for the vegetable plastic wrap, the vegetable aligning device is arranged to achieve automatic position aligning of the vegetables, and therefore, the working efficiency is increased.

The invention discloses an antibacterial plastic wrap and a preparation method thereof. The antibacterial plastic wrap is prepared by a film forming solution using polyvinyl alcohol, corn starch and citric acid as the matrix through film casting. The film forming solution further comprises glycerin and water. Due to the fact that the citric acid is added into the mixed solution of the polyvinyl alcohol and the corn starch, ion bonding of the mixed solution and the cell membranes of bacteria occurs, the protein and cell membrane synthesizing systems in the bacteria are destroyed, bacterial reproduction is inhibited, and the plastic wrap is antibacterial.

The present invention discloses a kind of environmental friendly SEBS fresh-keeping film, and includes the following components with contents of unit mass: SEBS resin 100 units, rubber filling oil 75-125 units, polypropylene 40-115 units, lubricant 0.6-0.8 units, and anti-aging agent 0.4-0.6 units. The present invention also offers a production method of environmental friendly SEBS fresh-keeping film, which includes the following steps: weighting and taking the various components according to their dosages: SEBS resin 100 units, rubber filling oil 75-125 units, polypropylene 40-115 units, lubricant 0.6-0.8 units, and anti-aging agent 0.4-0.6 units; letting SEBS resin to fully absorb rubber filling oil; being even mixed with polypropylene, lubricant, and anti-aging agent, using twin screw extruder to produce particles; finally, using plastic-extruded blower to extrude the shaped fresh-keeping film. The environmental friendly SEBS fresh-keeping film of the present invention has excellent transparence, tackiness, and good mechanical properties, and is health, safe and environmental friendly, which can replace soft PVC fresh-keeping film for foods and packings of other daily-used goods and industrial products.

A dispenser for a roll of plastic film wrap material, comprising a grooved base (22) defining an elongated trough and having a partial cylinder shaped roll top cover (52), said roll top cover being augmented by a saw tooth cutter (62) and a cutter safety guard (66). The roll top cover (52) is pivotably positioned between parallel end walls, which are constructed of furniture like material and support a space saver shelf (30). An inclined plane (40) stabilizes the roll of plastic wrap, and a static bar (36) holds the loose end of said plastic wrap.

The invention provides a high-transparency physical antibacterial polyolefin fruit and vegetable storage and transportation preservative film, comprising polar PVC resin, primary plasticizer, auxiliary plasticizer, a liquid heat stabilizer, a physical bactericide, antibacterial agent, a solid heat stabilizer, lubricant, anti-blocking agent and dye. On the basis of maintaining or improving the MAPfunction, the high-transparency physical antibacterial polyolefin fruit and vegetable storage and transportation preservative film can improve the physical antibacterial effect, reduces usage of chemical preservative, reduces secondary pollution of chemicals on environment and products, has the effects of beautifying package, highlighting appearance quality of fruits and vegetables and enhance product grade, is in accordance with the higher requirements proposed in fruit and vegetable storage and transportation preservation industry, especially in the use of MAP material in logistic preservation, so as to achieve the aims of improving logistic preservation effect, improving dynamic preservation benefit, and meeting consumer requirements.

The invention relate to a multifunctional fresh-keeping material capable of releasing anions and a preparation method of the material. The multifunctional fresh-keeping material is characterized by comprising 50-95 parts of resin, 5- 20 parts of an anion additive, 0.1-2 parts of a coupling agent, 0.1-0.5 part of an antioxidant and 0.1-0.8 part of a processing aid. The preparation method comprises the steps of firstly mixing resin with the processing aid well in a mixer, and then adding the anion additive, the coupling agent and the antioxidant to the mixer, mixing uniformly and taking out, and then pelletizing in a twin-screw extruder to obtain the multifunctional fresh-keeping material capable of releasing anions, and finally molding in the molding machine. The molded fresh-keeping product disclosed by the invention has the effects in the aspects of resisting bacteria, inhibiting bacteria, keeping fresh, removing peculiar smell, prolonging shelf life of food and promoting the vigor of animal and plant; the multifunctional fresh-keeping material is easily molded and can be produced into films, and boxes and the mechanical properties are not reduced after long-term use; due to the adoption of non-toxic and tasteless food grade resin and additive, the multifunctional fresh-keeping material is more conducive to human health and hygiene. The patent is mainly used in environments needing preservation such as food circulation boxes, seafood circulation boxes, seedling-breeding tray, takeout circulation boxes, refrigerator preservation box and fresh-keeping film.

The invention discloses edible composite cling film, and a preparation method and application thereof. The composite film is prepared by the following steps: adding a polyvinyl alcohol solution, a chitosan solution, a phenolic acid substance and a plasticizer in an edible polysaccharide Curdlan suspension, adjusting the pH value of the mixed solution to 3-5, carrying out ultrasonic degassing to obtain a film-forming liquid, pouring the film-forming liquid into a polytetrafluoroethylene plate, carrying out heat preservation for carrying out a reaction for 8-10 minutes at a temperature of 90-120DEG C, carrying out sizing, carrying out sterilization treatment, carrying out ultraviolet irradiation treatment for 5-10 minutes, carrying out hot-air circulating drying treatment at a temperature of 90-120 DEG C for 30-60 minutes, and carrying out cooling at a temperature of 4 DEG C to obtain the edible composite cling film. The edible composite film provided by the invention has the advantagesof high tensile strength and high extensibility, has excellent integrity, tensile strength and extensibility after being stewed in boiling water for 1 hour, and can effectively prolong the shelf lifeof fruits, vegetables and the meat products.