11 results about "Blow molding" patented technology

A very low pressure gas or blow forming process for shaping a bulk metallic glass (BMG) in its supercooled liquid state that avoids the fractional stick forces experienced by conventional shaping techniques by engineering the expansion of a pre-shape or parison of BMG material such that substantially all of the lateral strain required to form the final article is accomplished prior to the outer surface of the parison contacting the surface of the shaping apparatus is provided. The capability offered by the inventive shaping process to avoid the frictional forces exerted by the shaping apparatus surface allows for the formation of precision net-shape complex multi-scale parts and components using processing conditions inaccessible by conventional processes.

The invention discloses a Pasteur pipettesemi-finished product, comprising a gas port, a pipette and surrounding remaining materials. A cutting port is formed between a small suction head of the pipette and the gas port. According to the technical scheme provided by the invention, for demoulding in a blow molding process, a mold directly cuts off the connection between the pipette and the gas port, so that artificial operation only needs to tear down a pipette from the Pasteur pipette semi-finished product, thereby greatly improving the processing efficiency and ensuring product quality.

The invention discloses a mold opening and closing mechanism of a blow molding machine. The mechanism comprises a fixing assembly. Guide bars are arranged on the two terminals of the fixing assembly. A first inner template and a second inner template which can move left and right are sleeved on the guide bars. The first inner template and the second inner template are respectively hinged on the fixing assembly through hinging components. A first connecting bar and a second connecting bar are respectively hinged on the hinging components. One end of the first connecting bar is hinged on a motor shaft of a connecting bar driving motor. One end of the second connecting bar is hinged on a transmission shaft. The connecting bar driving motor and the transmission shaft are respectively fixed on the fixing assembly. The first connecting bar and the second connecting bar move concurrently with a linkage apparatus, wherein the linkage apparatus is arranged on the fixing assembly. A bottom mold set is sleeved on the guide bars between the first inner template and the second inner template. A bottom mold elevating mechanism is used for elevating the bottom mold when the bottom mold set and the linkage apparatus move.

The invention discloses an environment-friendly film for home decoration. The environment-friendly film comprises a PE film layer, an ink printing layer and a water-based coating layer which are arranged from bottom to top. The PE film layer is a modified PE film layer, the ink printing layer is a water-based polyurethane PVC ink printing layer, the water-based coating layer is a water-soluble coating layer, the thickness of the environment-friendly film ranges from 0.08 mm to 0.45 mm, and the ink printing layer is prepared from the following raw materials in percentage by mass: 50%-80% of water, 0%-5% of alcohol, 15%-30% of waterborne polyurethane resin and 5%-30% of pigment. The environment-friendly film is good in tensile property and convenient to use, can be used for blow molding, flat pasting and coating, meets the surface protection and decoration requirements of plates, and is clear in surface texture, attractive in appearance, environmentally friendly, practical, scratch-resistant, antibacterial, stain-resistant and environmentally friendly and healthy to use.

The invention discloses a blow molding process with an effect of improving the strength of a flow guide plate by injection molding of inserts. The blow molding process comprises the following steps that firstly, a first combined insert body and a first inner insert are jointly made into a first combined insert through injection molding; a second combined insert body and a second inner insert are jointly made into a second combined insert through injection molding; a third combined insert body and a third inner insert are jointly made into a third combined insert through injection molding; a fourth combined insert body and a fourth inner insert are jointly made into a fourth combined insert through injection molding; the first combined insert and the second combined insert form a left insert group, and the third combined insert and the fourth combined insert form a right insert group; a mold is opened, the left insert group and the right insert group are assembled into the mold, a molten plastic blank is extruded to be placed in the mold, after the mold is closed, compressed air is introduced into the mold blank, cooling and demolding are performed, and then a hollow product is obtained. According to the blow molding process, the flow guide plate and an automobile body sheet metal are assembled more firmly and stably, the local strength of the product and the delicate feeling ofa customer are obviously improved, and the risk of cracking caused by insufficient local strength of the product is reduced.

The invention discloses a high-low-temperature anti-fog breathable polyethylene heat-sealing film for fruit and vegetable packaging. The film comprises a surface layer, a core layer and a heat-sealinglayer from top to bottom, the layer ratio structure of three-layer co-extrusion is lDPE + LLDPE/(LDPE + LLDPE + a high and low temperature antifogging agent)/(LDPE + LLDPE + PBE + the high and low temperature antifogging agent + ultrafine diatomite). According to the invention, the high and low temperature compound antifogging agent is added into the heat sealing layer and the core layer, so thatthe film has high and low temperature antifogging performance at the same time; superfine diatomite with adsorption function is added into the heat sealing layer, so that precipitation of the antifogging agent can be delayed, and anti-fog effect lasting time of the film can be prolonged; granular krypton of diatomite can improve film air permeability and film opening performance, and increase film strength; and three-layer co-extrusion blow molding technology is adopted, so that the polyolefin with high-temperature and low-temperature antifogging effects, good air permeability, good tensile strength and good heat-sealing strength is prepared.

The invention provides a packaging bag and application thereof. The packaging bag comprises a packaging bag opening part and a packaging bag body, wherein the packaging bag opening part and the packaging bag body are integrally connected; internal folded wires which are sunken towards the inner side of the packaging bag body are arranged at the connection part of the packaging bag opening part and the packaging bag body; a sealing bonding strip which can perform sealing multiple times is arranged below the packaging bag opening part; zigzag tearing wires are arranged on the outer side of the packaging bag body; tearing wire pull heads are arranged on the tearing wires; the packaging bag opening part and the packaging bag body are composed of a plastic film layer and an outer layer; the outer layer is arranged on the outer side of the plastic film layer; and the tearing wires are arranged on the outer layer. The packaging bag has the beneficial effects that a plastic film is prepared through adopting the seven-layer coextrusion blow molding manner, the shelf life of industrial milk powder can be effectively prolonged through the packaging bag prepared through the film, the milk powder does not go bad within 3 to 6 months and even 12 months, the shelf life of industrial milk powder is prolonged, and the storage time of industrial milk powder is effectively prolonged.

The invention relates to the technical field of automobile air conditioners, and particularly relates to a manufacturing method of a blow molding and forming air channel. The method comprises the following steps: 1, preparing materials; 2, mixing plastic particles and a foaming agent; 3, feeding into a conveying mechanism; 4, heating to smelt; 5, foaming a mixture; and 6, forming through a mold. With the adoption of the method, the weight of spare parts can be reduced, so that the air channel is light in mass; and moreover, the noise produced by vibration of the air channel when an automobileruns is reduced, and thus the comfort of use is improved; the foaming time can be controlled; the pressure control range is accurate; the prefabricating time can be determined; the technology is controllable; and the method is low in production cost, high in efficiency, and easy to realize industrialization.

The invention discloses a tear-resistant blown film and a preparation process thereof, relates to packaging bags, and aims to solve the problem that normal use of a film bag is affected due to the fact that the film bag is prone to deformation under the pulling action of a hand, severe deformation and damage are caused, and the key point of the technical scheme is that the tear-resistant blown film comprises a base body of a cylindrical structure formed through blow molding, the base body comprises an inner layer and an outer layer, frosted parts located on the outer circumferential wall of the base body are formed on the surface of the outer layer, the multiple frosted parts are arranged in the length direction of the base body, and a cloth layer bonded with the base body is arranged between every two adjacent frosted parts. Through the arrangement of the cloth layer, the tear resistance and puncture resistance of the film can be improved, the service life of the film and the service life of a film bag can be prolonged, the high-density outer layer is made of a polyvinyl chloride material, polyvinyl chloride has the advantages of flame retardance (the flame retardant value is 40 or above), high chemical resistance and good mechanical strength and electrical insulating property, the comprehensive capacity of the film can be improved, and the service life of the film bag can be prolonged. And the strength is good.

The invention relates to a reshaping station (1) for reshaping plastic preforms (10) into plastic containers. The reshaping station (1) has two lateral part supports (4, 6) for supporting lateral parts (14, 16) of a blow mold and preferably a base part support for supporting a base part of the blow mold. The lateral parts (14, 16) and the base part (18) of the blow mold together form a cavity (15)within which the plastic preforms (10) can be reshaped into the plastic containers by applying a flowable medium. At least one of the two lateral part supports can be pivoted relative to the other lateral part support with respect to a specified main axis (S) in order to open and/or close the blow mold, and the reshaping station has a locking mechanism in order to lock one lateral part support (4) with the other lateral part support (6) in a closed state of the blow mold. The locking mechanism (20) has a first locking element (22) which can be pivoted with respect to a specified pivot axis (S1) and which engages into a second locking element (24) in order to lock the lateral part supports. According to the invention, at least one of the two locking elements has a first contact surface (26) which is suitable for interacting with a second contact surface (28) of the second locking element (24) when locking with the second locking element (24). At least one of the contact surfaces is designed such that the two lateral part supports (4, 6) are forced against each other during a pivoting process of the first locking element (26) with respect to the pivot axis (S1) in the direction of the second locking element (28).