CN1321036C - Vacuum packaging method and its mechanism - Google Patents

Abstract

The invention relates to a vacuum packaging method and a mechanism thereof, which are suitable for a package to be packaged in a vacuum mode.

Description

Vacuum packaging method and mechanism thereof

Technical field

The present invention relates to a kind of vacuum packaging method and mechanism thereof, be applied to contain the envelope body of core, particularly a kind ofly use the mode that directly vacuumizes and cooperate special air extractor to come Vacuum Package to contain the envelope body of core.

Background technology

Vacuum sealing technique originates from the forties in 20th century.Since nineteen fifty, polyester, sealed polyethylene plastic were successfully applied to commodity packaging, the Vacuum Package correlation technique was just developed rapidly.Vacuum Package is that article are packed in a kind of airtight container, before container closure, the air in the container is taken out light and make a kind of packing method that is vacuum state in the container, its objective is and preventing that oxygen and aqueous vapor from entering in the container, cause quick growth of germ or materials oxidated rotten, when also actv. is avoided adding heat-seal in the past simultaneously, cause packing container to break owing to expanding.The electronic goods of general meat commodity, cereal processed commodities and some easy oxidation deterioration can adopt vacuum packaging that storage period is compared without long three times of vacuum-packed person.When core is the polyurethane (open-cellpolyurethane foams), aerogel (carbon/silica aerogel) etc. of polystyrene (open-cell polystyrene foams), the perforate of perforate, just become the vacuum heat-preserving sheet after vacuumizing, its effect of heat insulation is 3 to 7 times of conventional P U foaming, and when the ventilative and permeability rate of its envelope body extremely hangs down, degree of vacuum in the envelope body is difficult for destroyed, so can be long-term used in refrigerator or other device that need be incubated.

The existing encapsulation technology that directly vacuumizes, because of there not being the restriction on the envelope body size, though be fit to a small amount of various product,, the inside and outside differential pressure that when vacuumizing, is produced, make the envelope body that contains core produce fold, not only be difficult for encapsulation, quality is also wayward, if utilize anchor clamps to fix the envelope body, because pressure reduction is added the strength of anchor clamps, when heat-sealing, also destroy the structure of air blocking thin film.Desire to solve the above problems, U.S. Patent number US6106449 discloses a kind of pump bowl that can be applicable on the vacuum encapsulation mechanism, after spreading anti-leakage of oil, with this pump bowl by the core of the aspirating hole of envelope on the body in touching envelope body, though in the time of can preventing exhaust because of fold that air pressure caused, and actv. break off outer gas enter the envelope body in, the quality of high vacuum also is provided, yet, but because the manufacturing process steps complexity, not only prolong the manufacturing process required time, its quality is wayward, more causes the operating personal inconvenience.

Summary of the invention

The objective of the invention is provides a kind of vacuum packaging method and mechanism thereof for addressing the above problem, not only do not need additionally to smear the vacuum oil leakproof, can also be fast, the various product that is applied to various volume of no dimensional restriction, its manufacturing process is simpler, the easier control of quality can increase module according to hobby in addition.

According to vacuum packaging method disclosed by the invention and mechanism thereof, include the air extractor that to bleed respectively by front end and periphery, an airtight module of pressing and a pressurized heat seal apparatus, to seal body at first earlier around after this core heat-sealing and only leaving a reserved opening, then air extractor being inserted air extractor by reserved opening also contacts to the core that seals in the body, bleed by the periphery of air extractor and to make the envelope body that is positioned at contiguous reserved opening be adsorbed on the air extractor smoothly, then that the reserved opening periphery is partially sealed, avoid outside air to infiltrate, make air extractor bleed and will seal body and keep vacuum state by front end, pressurize at last and seal the envelope body reserved opening, finish the sealed vacuum state of envelope body, and make core be packaged in the body.

Description of drawings

Fig. 1 is a schematic flow sheet of the present invention;

Fig. 2 is the block diagram of vacuum encapsulation mechanism;

Fig. 3 is the scheme drawing of absorption envelope body on air extractor;

Fig. 4 is the scheme drawing of the periphery of the reserved opening of partially sealed envelope body and absorption place;

Fig. 5 is the side schematic view of vacuum encapsulation mechanism; And

The scheme drawing of Fig. 6 for using air extractor to vacuumize.

Description of reference numerals

10... the reciprocating type module of bleeding of air extractor 12... made from porous material position 13...

14... the airtight press fit device 21... of slot 20... goes up U template piece

22, U template piece under 27... rubber gasket 23, the 28... rotary shaft 26...

30... envelope body 31 reserved opening 32... heat-seal land 33... core 40... pressurized heat seal apparatus

The specific embodiment

For making purpose of the present invention, structural attitude and function thereof are had further understanding, conjunction with figs. is described in detail as follows:

Vacuum packaging method disclosed according to the present invention and mechanism thereof, please refer to Fig. 5 for the side schematic view of vacuum encapsulation mechanism, pair of corresponding pressurized heat seal apparatus 40, the airtight module 20 of pair of corresponding pressing, and a air extractor (not being shown on Fig. 5) by envelope body 30 fits dispose according to the mode that Fig. 5 presented.Presenting as Fig. 5, from top to bottom is pressurized heat seal apparatus 40, the air extractor 10 of airtight module 20 of pressing and quilt envelope body 30 fits.The airtight module 20 of its pressing, please refer to Fig. 2, include on the U type plate 26 under plate 21 and the U type, the packing seal 22,27 of rubber material distinctly is housed on the plate, its U template piece 21,26 sideway swivel starts by plate out of the ordinary up and down come this air extractor 10 of clamping in central authorities.Present as Fig. 2, the section external form of air extractor 10 is a kind of biconvex external form of flat and similar eyes, both sides are thinner, the centre is thicker, and only include a made from porous material position 12 (present embodiment is powder metallurgy sintered material), air extractor 10 can be bled by this position, and other material for breathing freely; The front end of air extractor 10 has a reciprocating type module 13 of bleeding that is platypelloid type, is installed in telescopic mode in the slot 14 of air extractor 10.

At first, present as Fig. 6, to seal body 30 seals around core 33, and only reserve a reserved opening 31 that is slightly larger than air extractor 10 (among Fig. 1, step 101), provide enough spaces to allow air extractor 10 turnover seal bodies 30, front end (promptly being the reciprocating type module 13 of bleeding) by the module 13 of bleeding passes the reserved opening 31 of envelope body 30 always toward envelope body 30 interior extensions then, core 33 backs (step 102) in reciprocating type front end of bleeding module 13 touches envelope body 30, activate air extractor 10 again, bleed in made from porous material position 12 by air extractor 10 peripheries, cause beyond heat-seal land 32 but be positioned at the envelope body 30 of contiguous reserved opening 31, present as Fig. 3, be adsorbed on the air extractor 10, the position that while actv. fixed sealing body 30 is fitted on the air extractor 10 produces (step 103) with pre-preventing wrinkle, then, the template of the U up and down piece 21 of the airtight module 20 of pressing, 26 can be with U type open end along the periphery of person's air extractor clamping air extractor 10 and be adsorbed in envelope body 30 on the air extractor in central authorities relatively, present as Fig. 4, cause around the reserved opening 31 of envelope body 30 clamping because of the airtight module 20 of pressing, cause partially sealed (step 104), make envelope body inside and core be isolated from the outside, outside air can't enter, afterwards, utilize the reciprocating type module 13 of bleeding of air extractor 10 front ends to bleed, degree of vacuum up to envelope body 10 reaches predetermined vacuum standard (step 105), after the reciprocating type module 13 of bleeding is understood in automatically retracting to air extractor 10, can maintain vacuum state in order to allow with the envelope body 30 after vacuumizing, utilize pressurized heat seal apparatus 40 to stress on earlier and confirm on the airtight module 20 of pressing that no air can enter into envelope body 30 via reserved opening 31, reserved opening 31 to envelope body 30 seals the possibility (step 106) of thoroughly breaking off air admission envelope body 30 then, presents as Fig. 5.After pressurized heat seal apparatus 40 is finished heat-sealing, can loosen pressure automatically, and the made from porous material position 12 of air extractor 10 can stop also bleeding, so the envelope body 30 that the user can finish encapsulation easily takes out to the airtight module 20 of pressing.

Claims (15)

1. A method for vacuum packaging, applied to vacuum packaging—a sealing body with a core material, characterized in that it at least comprises the following steps: Heat sealing the sealing body around the core material and leaving only one reserved opening; passing an air suction device through the reserved opening and touching the core material; making the enclosure adsorb on the pumping device; Partially sealing the reserved opening of the enclosure and the periphery of the adsorption place; evacuating the enclosure by means of the evacuation device; and Heat seal the reserved opening of the sealing body. 2. The method of vacuum packaging according to claim 1, characterized in that, the step of heat sealing the sealing body around the core material and leaving only a reserved opening, the reserved opening is slightly larger than the air pumping device, Enough space is provided for the suction device to fit on the sealing body. 3. The method of vacuum packaging according to claim 1, wherein in the step of making the sealing body adsorb on the air pumping device, the sealing body is adsorbed on the air pumping device by pumping air around the periphery of the air pumping device. on the suction device. 4. A mechanism for vacuum packaging, applied to a package containing a core material, characterized in that it at least includes: A suction device, which can suck air through the front end and the periphery respectively, the suction device can pass through the reserved opening to make the front end contact with the core material, and through the peripheral suction, make the The sealing body is adsorbed on the air pumping device; A press-fit airtight module, adjacent to the air pumping device, is used to partially seal the periphery of the reserved opening, so that the air pumping device can pump air through the front end to maintain the sealing body in a vacuum state; and A pressure heat sealing device is adjacent to the air pumping device, and the air pumping device maintains the sealing body in a vacuum state, and pressurizes and heat seals the reserved opening. 5 . The vacuum-encapsulated mechanism according to claim 4 , wherein the air extraction device further comprises a reciprocating air extraction module, which is telescopically installed at the front end of the air extraction device. 6 . 6. The vacuum-encapsulated mechanism according to claim 5, wherein the reciprocating pumping module is flat. 7. The vacuum-encapsulated mechanism according to claim 4, wherein the air pumping device has a flat cross-sectional shape and includes a porous material part through which the air is pumped to adsorb the sealing device. body on the suction device. 8. The vacuum-encapsulated mechanism according to claim 7, wherein the porous material part is a powder metallurgy sintered material. 9. The vacuum-encapsulated mechanism according to claim 4, wherein the periphery and the front end of the air pumping device can be operated independently to pump air. 10 . The vacuum-encapsulated mechanism according to claim 4 , wherein the press-fit airtight module includes an upper plate and a lower plate to clamp the air extraction device at the center, so as to partially seal the enclosure. 11 . 11 . The vacuum-encapsulated mechanism according to claim 10 , wherein the upper plate and the lower plate are respectively rotated on one side to sandwich the air extraction device. 12 . 12 . The vacuum-encapsulated mechanism according to claim 10 , wherein the upper and lower plates are U-shaped, and the open ends of the U-shape are oppositely sandwiched on the sealing body along the periphery of the air pumping device. 13 . 13. The vacuum-encapsulated mechanism according to claim 10, wherein a gasket is installed on the press-fit airtight module. 14. The vacuum-encapsulated mechanism according to claim 13, wherein the gasket is made of elastic material. 15. The vacuum-encapsulated mechanism as claimed in claim 14, wherein the gasket is made of rubber.

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