128results about How to "Tightly sealed" patented technology

A liquid filter, particularly for filtering diesel fuel, having a device for automatically discharging water separated from the fuel in the liquid filter, including a housing with an inlet and an outlet for the liquid to be filtered, a filter element arranged in a sealed manner between the inlet and the outlet, and a water collecting area underneath the filter element, in which the automatic water discharge device is connected in a sealed manner to the housing below the water collecting area, and includes in a single housing a sensor for sensing the water level in the water collecting area, an electrically operated water discharge device for discharging water from the water collecting area, a water outlet, and a microprocessor operatively connected to the sensor, to the water discharge device and to a control unit of the internal combustion engine, such that in a predetermined operational state of the internal combustion engine while the engine is running, the microprocessor activates the water discharge device when the sensor emits an appropriate signal indicating water in the collecting area.

The invention provides a magnetic levitation balance apron spray sewin aerospace seal plenum chamber air cushion train. The bottom of the body air cushion train is equipped apron, The apron and bottom of the train in it and road pavement form a plenum chamber; the apron is equipped a spray sewin which connects with the air supply duct of the air supply apparatus and the plenum chamber; the bottom of the car body is equipped a air exhaust opening which connects with the plenum chamber; the bottom of the car body is equipped a magnetic levitation balance control system. The invention combines air cushion principle and magnetic levitation balance principle, and solves the problem of control area air cushion balance; the invention uses apron spray sewin aerospace seal plenum chamber air cushion, and large air cushion, strong encapsulation, relative high air pressure. So it gets strong carrying capacity; the invention uses linear motion actuator not traditional jet engine as drive apparatus, so, it is low noise, no pollution.

An enclosure for use in conjunction with a recessed ceiling fixture is provided which includes a substantially rectangular housing defining a top wall and side walls constructed from a single piece of fire-resistant gypsum wallboard. The housing is fastened to continuous stamped metal support flange depend inwardly from bottom edges of side walls of the housing to facilitate mounting of the housing between spaced apart building joists. The recessed fixture is mounted to the interior of the support flange after installation of the housing between the building joists.

The invention discloses a method for measuring pressure of gas in a coal seam in a fracture rock stratum. The method comprises the following steps of firstly, penetrating the seam, measuring the pressure, drilling and tapping to form an outer rock drill hole; after sleeving a borehole orifice-pipe, fixing the pipe and passing the pressure-tight test, continuously going deep into the drill hole to form an inner rock drill hole, then secondary grouting and solidifying the inner rock drill hole; sweeping the hole and drilling along the borehole orifice-pipe again, forming a coal drill hole after coal can be seen from the drill hole, inserting a pressure measuring pipe into the inner rock drill hole, and utilizing expanded synthetic resin to coordinate with a grout stop belt to block two ends of the inner rock drill hole of the drill hole to form a closed chamber; after grouting is performed for the third time in the closed chamber, mounting a pressure gage and observing for 20-30d and recording. Through drilling and grouting processes for multiple times, tight hole sealing and multilayer high-pressure grouting, as well as the functions of thoroughly blocking circumferential cracks of rocks, enhancing hole sealing quality and separating gas in the hole are realized. The method is strong in applicability, and can be adopted no matter how complex the geological conditions are.

The invention relates to a laser sealing method of glass and a kovar alloy. The method comprises the following steps: S1, setting a processing track according to dimension and shape of glass and kovar alloy needed to be sealed, and preparing a welding clamp; S2, performing a pre-stage sealing purifying pre-treatment operation on the glass and kovar alloy and providing Ag-Cu-Ti power or an Ag-Cu-Ti foil as welding flux; S3, uniformly spraying the welding flux in the S2 to the peripheral edges of the kovar alloy to be sealed, and placing the to-be-sealed glass on the kovar alloy; S4, clamping the to-be-sealed body by the welding clamp as required; S5, setting laser processing parameters, wherein a laser performs laser irradiation on the welding flux at the boundary of the glass and the kovar alloy according to the set processing track to prepare a glass-kovar alloy sealing body; and S6, disassembling the welding clamp. The method provided by the invention fully solves the problem that the connecting strength between the glass the kovar alloy is not high, and meanwhile, the sealing body which is high in connecting strength is prepared.

Dual chambered container with partition space between the walls of the two chambers to prevent contents from reaching a uniform temperature; three interchangeable lids with flip up spouts: to pour or sip contents separately when spout is lifted up, to pour or sip contents mixed together when spout is lifted up, pour or sip from one chamber when flip up spout is lifted up and pick out snacks, chips etc from the other chamber; gasket between lid and bottle body to seal bottle and prevent leakage; stainless steel insert between the two content chambers so contents will reach uniform temperature or stainless steel clip sleeve to allow direct thermal contact between content of each chamber.

The invention discloses a nuclear reactor coolant pump and a passive stopping seal assembly thereof. The passive stopping seal assembly comprises a seal ring, a tightening-up ring and a meltable support block. The seal ring is an opening ring. In a normal working condition, a pump shaft is surrounded by the seal ring and a space is kept between the seal ring and the pump shaft. The outer circumferential wall of the seal ring is encircled by the tightening-up ring. In a working condition that power failure happens to a whole plant, the tightening-up ring provides the seal ring with sufficiently big holding-tightly force to drive the seal ring to close to hold the pump shaft tightly. The meltable support block is inlayed in an opening of the seal ring or of the tightening-up ring. In the normal working condition, the meltable support block prevents the ring where the meltable support block is located from being closed and it is ensured that the seal ring is in an opening state. In addition, in the working condition that power failure happens to the whole plant, the meltable support block melts and loses efficacy, so that the seal ring is closed under the action of the tightening-up ring. Compared with the prior art, the passive stopping seal assembly is only provided with the three elements; not only can the integrity requirement of a shaft seal be met under the condition that an emergency shaft seal injection system is not relied on in the working condition that power failure happens to the whole plant, but also the passive stopping seal assembly has the advantages of being simple in structure and firm in seal.

The invention discloses a preparation technology of liquorice ultrafine powder granular decoction pieces, which comprises the following steps of: (S1) cleaning; (S2) slicing; (S3) drying; (S4) cooling and performing ultrafine grinding; (S5) mixing; (S6) granulation; (S7) total mixing; (S8) inspection and (S9) encapsulation. According to the invention, liquorice is ground into ultrafine powder at low temperature, the volatilization loss of volatile ingredients of a medicine is reduced, the dissolution speed and dissolution quantity of active ingredients are improved, and the liquorice is easily absorbed by organism and takes effect quickly and has high efficacy; without adding any excipient, all natural characteristics of the liquorice medicine are effectively maintained; the liquorice ultrafine powder granules are sub-packed by a composite membrane bag and are flexible and convenient to use and easy to store; and moreover, the consistency in the product quality and the content of active ingredients of granules is high, and mechanical and large-scale batch production is facilitated.

A thermostatic valve mounted within a housing which defines a fluid circuit and wherein an internal valve seat is defined withing the housing, the thermostatic valve including a blocking valve component movable relative to the valve seat for opening and closing the fluid circuit, a thermostatic element for actuating the blocking valve and including a body and a piston that are relative movable with respect to one another and a base to which the piston is mounted, an electrical heating element mounted within the and piston of the thermostatic element for heating expansible material contained in the element, wherein one end of the piston is seated and sealed within a blind hole in the base and the base is seated and sealed within a blind cavity in the housing and which cavity has a bottom wall formed integrally with the housing through with electrical pins extend toward the outside of the housing.

The invention discloses a heat sealing machine which comprises a frame, a base and a worktable. The worktable is arranged on the base, a cylinder is mounted on the lower portion of the worktable, a vertical cylinder is mounted on the frame, a space is reserved between the vertical cylinder and the base, a heating plate is arranged in the space, a flattening plate is covered on the lower portion of the heating plate, and the upper end of the heating plate is connected with the vertical cylinder through a sliding guide post. The heat sealing machine has the advantages that the flattening plate is covered on the lower portion of the heating plate and is pressed flat, the heating plate is electrically connected with a temperature adjusting button, the temperature needed by pressing is adjusted according to different plastic films, tightness of a seal is ensured, and a plastic film bag cannot deform and is fine in quality.

The invention relates to a magnetic conductive ceramic pot and a preparation process of the magnetic conductive ceramic pot. The magnetic conductive ceramic pot comprises a ceramic pot matrix, a magnetic conductive anti-oxidation heating plate and a ceramic sealing sheet, wherein a groove is formed in the bottom of the ceramic pot matrix, the magnetic conductive anti-oxidation heating plate is arranged in the groove in the bottom of the ceramic pot matrix, and the size of the magnetic conductive anti-oxidation heating plate is smaller than that of the groove in the bottom of the ceramic pot matrix; the ceramic sealing sheet is sealed to the bottom of the ceramic pot matrix; the magnetic conductive anti-oxidation heating plate comprises a magnetic heating plate and a high-temperature antioxidation coating; the high-temperature antioxidation coating covers the surface of the magnetic heating plate, and after sintering, a closed protective film layer is formed. The preparation process comprises the following steps: preparing blank of the ceramic matrix, carrying out rolling forming, preparing the magnetic conductive anti-oxidation heating plate, preparing the ceramic sealing sheet, embedding the magnetic conductive anti-oxidation heating plate, carrying out sealing, and finally, carrying out sintering. With the adoption of the magnetic conductive ceramic pot, the problem that when the traditional ceramic pot with the metal magnetic conductive heating layer is subjected to electromagnetic heating, since the thermal matching degree between the metal heating layer and the ceramic pot is poor, the swelling, pot breaking and the like are easily caused are solved, in addition, the preparation process is simple, and therefore, the application value is good.

The invention provides a bamboo carbon fiber sanitary towel and belongs to the technical field of feminine hygiene products. The bamboo carbon fiber sanitary towel comprises a sanitary towel body, wherein the sanitary towel body is composed of a surface layer, an absorption layer and a bottom layer, the surface layer, the absorption layer and the bottom layer are arranged in sequence from top to bottom, and a bamboo carbon fiber chip is arranged between the surface layer and the absorption layer. According to the bamboo carbon fiber sanitary towel, due to the fact that the bamboo carbon fiber chip is arranged, the breathability and hygroscopicity of the sanitary towel are improved, bacterium breeding is effectively reduced, the bacteria resistance and bacteriostasis of the sanitary towel are improved, the deodorization function is achieved, and the probability that odor is generated on the private parts of females or a female suffers from gynecological inflammation is effectively lowered; in addition, the bamboo carbon fiber sanitary towel touches soft and is smooth, fine, more comfortable in use, capable of generating negative ions, releasing far infrared rays, regulating the body function balance and promoting metabolism.

The invention discloses a quick-frozen seafood fish ball and a processing method thereof. The quick-frozen seafood fish ball comprises the following ingredients in parts by weight: 100-200 parts of surimi, 10-30 parts of corn starch, 10-20 parts of tapioca starch, 10-30 parts of tapioca modified starch, 20-30 parts of water, seasonings and food additives, wherein the seasonings comprise 2-5 parts of edible salt, 3-5 parts of white granulated sugar, 0.4-0.6 part of monosodium glutamate and 0.1-0.2 part of white pepper; and the food additives comprise 0.1-0.3 part of flavor enhancer, 0.1-0.3 part of fish essence, 0.1-0.3 part of humectants and 0.03-0.05 part of sorbitol. The processing method of the fish ball comprises a series of processes of sampling, mixing, forming, cooling, quick freezing, packaging, storing and the like. The quick-frozen seafood fish ball provided in the invention contains not only the conventional fish meat component but also tapioca with rich nutrition, and is fresh and tender in mouthfeel as well as chewy and crispy by virtue of rational combination.

The invention provides a self-unloading type material shifting and transporting hopper and belongs to the technical field of material storage or transportation devices. The self-unloading type material shifting and transporting hopper comprises a hopper body with the lower portion of a conical structure. A guide support is arranged in the hopper body. A suspension rod penetrates the center of the guide support movably. A suspension ring is arranged at the top end of the suspension rod, and a plug is arranged at the lower end of the suspension rod. A frustum-shaped through hole is formed in a base plate of the hopper body, and the plug is matched with the frustum-shaped through hole so as to seal the hopper body. The self-unloading type material shifting and transporting hopper is novel in structure and reasonable in design; and by researching the falling character of materials, the hopper is subjected to a series of structural improvements in consideration of material airtightness, operation convenience, operation efficiency and the like of the hopper, so that loading and unloading are more convenient, the material airtightness is better, operation is safer and more reliable, the operation efficiency is improved, and the labor intensity is relieved.

The invention discloses a preparation method for a Pt disk sub-micron electrode with a controllable geometrical shape. The method mainly comprises the steps of placing a Pt wire in a capillary glass tube; thinning a middle part of the capillary glass tube through adoption of a laser drawing device; enabling the capillary glass tube to fit with the Pt wire completely; breaking the capillary glass tube to obtain ultramicro electrodes; heating the tips of the ultramicro electrodes through adoption of a needle grinding device; controlling the diameters of the capillary glass tubes and electrode RG by controlling the heating process; and cutting off the sections of the tips of the ultramicro electrodes through adoption of a focused ion beam electron microscope, thereby obtaining the Pt disk sub-micron electrodes. According to the method, the obtained Pt sub-micron electrodes are flat in end face, uniform and densified in insulation layer, high in sensitivity and excellent in electrochemical performance and are especially applicable to basic electrochemistry and bioelectrochemistry sensors and scanning probes.

A full-automatic production device for refractory plastic materials belongs to the field of production devices for refractory materials and is characterized by comprising: a material preparing device, a material metering and dispensing device and a packaging device, wherein the three devices are connected successively to each other. The production device achieves full automation in production operation of the refractory plastic materials, reduces labor intensity of workers and improves production efficiency and quality. The production device is subjected to repeated design modification and test, is excellent in use effects and is suitable for being promoted in the field.

The invention provides an elastic cured foam material for an underground goaf and belongs to the technical field of fire prevention and fire extinguishment of the underground goaf. The elastic cured foam material for the underground goaf, provided by the invention, is prepared from the following raw materials in parts by weight: 30 to 50 parts of polyisocyanate, 2 to 10 parts of a polyol compound,1 to 5 parts of a foaming agent, 2 to 6 parts of a chain extender, 1 to 6 parts of a crosslinking agent, 0 to 10 parts of a flame retardant, 1 to 4 parts of a foam stabilizer, 0 to 3 parts of an anti-ageing agent, 0 to 6 parts of filler, 0.1 to 2 parts of a catalyst and 0 to 5 parts of a softening agent. The elastic cured foam material for the underground goaf, provided by the invention, has theadvantages of great stretching rate, strong compression resisting capability and good sealing performance, and also has the advantages of rapid foaming speed, short curing time and long ageing time.

This invention discloses one rock engineer physical analogue multi-function test device with guide rack, which comprises test case composed of edge frame formed space frame rack; six surfaces of guide rack is set with left load board, right load board, upper load board, bottom load board, front large board and back board; the front board is composed of multiple panels connected to the multiple panels and guide racks. This invention has guide rack earth force property test device.

The invention relates to the technical field of accessories, in particular to a preparation method of a hollow silver necklace. The hollow necklace is formed by a hollow pipe. A preparation method of the hollow pipe includes the following steps of firstly, conducting punching, wherein a silver block is cast and pressed into a silver strip through a tablet press; secondly, conducting quenching, wherein quenching is conducted on the silver strip obtained through pressing in the first step; thirdly, conducting welding, wherein the edges of the silver strip subjected to quenching are welded together in the length direction of the silver strip to form a hollow pipe body; fourthly, manufacturing the hollow pipe, wherein the welded hollow pipe body is manufactured into the hollow pipe, the necklace is formed by the hollow pipe, ground and polished, and then the finished product is obtained. The necklace prepared through the method is novel and unique in style and high in modeling three-dimensional sense; due to the hollow tubular structure, the weight is small, materials are saved, and cost is saved for wearers.

The invention relates to an easy-to-tear can for film covering foods. The easy-to-tear can comprises a can body made by punching a film covering metal sheet, and a cover body made of a laminating film, wherein the can body comprises a cavity with an opening, and an annular bonding body arranged at the edge of the opening in a surrounding manner, and the cover body and the annular bonding body can be thermally pressed and bonded to be sealed. Through the adoption of the easy-to-tear can for the film covering foods disclosed by the invention, the production cost of metal food cans can be reduced, the design and the formation of various appearance shapes are convenient, and individual design requirements are met.

The invention belongs to the technical field of capsule filling processes, and particularly relates to a medical capsule production process. The process includes the following steps of medicine mixing, capsule filling, capsule sealing, drying and packaging. The process adopts a capsule filling device, wherein the capsule filling device comprises a stirring module, a filling module, a drying module, a conveying module, a capsule sealing module, a loading basket and a packaging machine; the stirring module is used for stirring medicine, the filling module is used for filling capsules with the medicine, the conveying module is used for conveying capsule shells, the drying module is used for drying the capsules, the capsule sealing module is used for sealing capsule caps and the capsule shells, the loading basket is used for containing the sealed capsules, and the packaging machine is located on the right side of the loading basket and used for packaging the capsules. The medical capsule production process has the advantages that a complete set of equipment is adopted for completing the production process of capsule filling, sealing and drying, the working efficiency is improved, the cost is reduced, and meanwhile the labor intensity of workers is reduced.

The invention belongs to the field of oil field equipment and discloses an efficient energy-saving environment-friendly mechanical sealing device which is sealed up tight and simple and convenient for replacement. The efficient energy-saving environment-friendly mechanical sealing device is characterized in that a spiral nut is in threaded connection with a bearing block, the upper end of a secondary seal is inserted into the bearing block, a pressing cap is mounted at the upper end of the secondary seal, a thrust ball bearing is mounted between the pressing cap and the bearing block, the secondary seal is inserted into a primary seal which is in threaded connection with a connecting nut, the upper end of the connecting nut is hooked on a boss on the secondary seal, an external thread of the secondary seal at the upper end of the connecting nut is connected with an upper lock nut, a set limiting screw is arranged on the primary seal, a centralizing sleeve is arranged inside the secondary seal, a primary seal part is arranged at the inner bottom end of the primary seal, the primary seal is fixedly connected with an upper deviation adjusting body, deviation adjusting fastening bolts are in threaded connection with a lower deviation adjusting body, and a connector is fixed on the lower deviation adjusting body. The efficient energy-saving environment-friendly mechanical sealing device is compact in structure and simple and easy for mounting and replacement of sealing strips, and is sealed up tight.

The invention relates to a flood preventing and water retaining device which comprises a front plate, a rear plate and a group of locking screws, wherein the plate body of the front plate is provided with a plurality of groups of locking holes, waterproof adhesive tapes are fixed on the side edge of the front plate and the bottom of the front end of the front plate; the plate body of the rear plate is provided with a plurality of groups of locking grooves, waterproof adhesive tapes are fixed at the left and the right sides of the rear plate and the bottom of the front end of the rear plate; one ends of the screws are placed in the locking holes in the plate body of the front plate for fixation and the other ends are arranged in the locking grooves in the plate body of the rear plate for sliding; the locking grooves internally form an inverse T shape, the terminal of the locking grooves is provided with a notch for holding the locking screws; and a pipe plug is filled in the locking holes of the locking screws, in which the plate body of the rear plate is not placed. The invention can ensure that the front plate and the rear plate slide relatively to adjust the width of the floor preventing and water retaining device, thereby achieving the purpose of matching with different specifications of door frames.

The invention relates to a sealing device, in particular to a sealing device for biotechnological yoghurt production. The technical effect that the sealing device achieves tight sesaling for the biotechnological yoghurt production is achieved. In order to achieve the technical effect, the provided sealing device for the biotechnological yoghurt production comprises a push-pull rod, a first bearing seat, a second bearing seat, a top plate, a stop dog, a sliding shaft, a connecting rod, a roller, digging ropes, a small belt wheel, a first rotary shaft, a flat belt and the like. Rectangular grooves are symmetrically formed in the left side and the right side of the inner bottom of a placing frame. Yoghurt bottles are placed in the rectangular grooves. The upper ends of the left wall and the right wall of the placing frame are both connected with the digging ropes. The top plate is arranged above a base. First through holes are symmetrically formed in the left side and the right side of the top plate. The sealing device achieves beneficial effect of tight sealing, by arranging friction pads, bottle caps can be clamped more tightly, and thus the bottle caps can better cover the yoghurt bottles; and an illuminating lamp is arranged.

The invention discloses a salt water stemming. Saline solution is injected into a cylindrical plastic pipe, the mouth of which is sealed and blocked in a heat seal way, which plays a role in inhibiting gas combustion, explosion in the blasting engineering of the coal mine.

A universal cover for covering all types of beverage containers and an associated carrying case is disclosed. When placed over any beverage container, the universal cover disclosed uses decorative weights made with acrylic plastic gems, crystals or metal, to keep the cover secured in place as well as for keeping it well stretched and snugly placed over the rim of beverage container. The universal cover also includes a central opening for inserting a straw or a sipping device there-through. The universal beverage cover offers the functionality of creating a cover for containers where typically no lid or cover typically exists as is the case for non-portable beverage containers such as wine glasses, beer or juice mugs, and other crystal-ware used at a restaurant, banquet hall, or another indoor setting. The universal cover disclosed provides a level of protection against pathogens and other contaminants while maintaining the necessary decor and formality of the setting. Embodiments of the invention provide the additional functionality of maintaining beverage temperature for longer periods. The universal cover can be made with fabrics, or faux leather or vinyl type fabric for based on the degree of insulation or durability desired.

The invention provides a coal seam mining-induced fracture field gas pressure measuring structure. The structure comprises a drilling machine, a gas pipe, a grout prevention strip, a gas collection pipe, a grouting pipe, a gas pressure meter, a pressure sensor and a remote monitoring terminal. The drilling machine drills holes deep in a coal seam from a rock wall to form rock wall drilled holes and a coal drilled hole. The rock wall drilled holes comprise an outer wall drilled hole and an inner wall drilled hole, an orifice pipe is sleeved with the outer rock drilled hole, and a first grouting body is formed in an annular interlayer formed between the outer rock drilled hole and the orifice pipe; a second grouting body is formed in the orifice pipe and the inner rock drilled hole; the gas pipe deeply entering the coal seam is arranged in the center of the second grouting body in a sleeved mode, the grout stopping strip is arranged at the inner end of the gas pipe, and the gas collection pipe is disposed on the inner side wall of the gas pipe. Various drilled holes and multiple layers of grouting bodies are adopted, hole sealing is tight, and the functions of completely plugging cracks around rock, enhancing hole sealing quality and isolating gas in the holes are achieved. The structure is high in adaptability and can be adopted no matter how complex geological conditions are.

The invention relates to the field of mechanical equipment, and provides a pressure roller used for a thermal-sealing device. The pressure roller comprises a first roller and a second roller which are matched with each other, wherein a plurality of first pressure strips are arranged on the outer wall of the first roller; a plurality of second pressure strips are arranged on the outer wall of the second roller; the first pressure strips correspond to the second pressure strips; a distance between the shaft axis of the first roller and one surface, away from the first roller, of any first pressure strip is equal to a distance between the shaft axis of the second roller and one surface, away from the second roller, of any second pressure strip; a first elastic rubber strip is arranged on one surface, away from the first roller, of each first pressure strip; and the first elastic rubber strip is mutually matched with one surface, away from the second roller, of each second pressure strip. A packaging bag thermally sealed by the pressure roller used for the thermal-sealing device is better in airtightness. The invention further provides the thermal-sealing device comprising the pressure roller used for the thermal-sealing device, and the pressure roller used for the thermal-sealing device is in transmission connection with a motor in a machine case. The packaging bag thermally sealed by the thermal-sealing device is good in sealing effect.

The invention discloses a chip testing and sealing device and a technology thereof, and belongs to the technical field of chip testing and packaging. The device comprises suction nozzles, a testing device, a lifted-leg-bagging prevention mechanism and a cover-tape-deviation prevention mechanism, and a cutter sealing mechanism, the lifted-leg-bagging prevention mechanism, the cover-tape-deviation prevention mechanism, and the cutter sealing mechanism are arranged above a carrier tape according to a process order, and the suction nozzles transfer chips tested by the testing device into the lifted-leg-bagging prevention mechanism. The lifted-leg-bagging prevention mechanism device comprises a square pressing plate and a braid window which stretches in the running direction of the carrier tapefrom the middle of the square pressing plate; an outer opening is formed in the bottom of the braid window; the cover-tape-deviation prevention mechanism comprises a pressing plate, a support and a fixed shelf; the pressing plate, the support and the fixed shelf are in soft connection in sequence; the cutter sealing mechanism comprises two sealing cutters which are parallelly arranged, a sealinggroove is formed by the two sealing cutters, and when the cutter openings of the sealing cutters are pressed, soft pressure is applied to a cover tape and the carrier tape; the vertical center lines of the braid window, a cover tape groove and the sealing groove are in the same plane to guarantee that the cover tape and the carrier tape are uniformly and tightly sealed after the chips are bagged.