CN110902123A

CN110902123A - Interior protruding air guide formula vacuum packaging bag

Info

Publication number: CN110902123A
Application number: CN201911345330.3A
Authority: CN
Inventors: 廖嘉兴
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-12-24
Filing date: 2019-12-24
Publication date: 2020-03-24

Abstract

The invention relates to an inward convex air-guide type vacuum packaging bag, which comprises a bag surface layer and a bag bottom layer, wherein the bag surface layer and the bag bottom layer are connected together to form a bag body with an opening end, at least one surface of the inner side surfaces of the bag surface layer and the bag bottom layer is provided with a plurality of bulges, air guide channels for communicating the inner cavity of the bag body with the opening end are formed between the bulges, a vacuumizing machine is used for vacuumizing the inner cavity of the bag body through the opening end of the bag body, air in the inner cavity of the bag body is conveyed to the opening end through the air guide channels, the air is then pumped away by vacuumizing, during the period, the air guide channels formed between the bulges can keep the air in the bag body smoothly conveyed to the opening end of the bag body, the phenomenon that the air at the rear part is blocked by the joint generated after the vacuumizing of the bag surface layer and the bag bottom layer is avoided, the air in the bag body is effectively pumped out, the vacuum preservation effect of the packaged objects in the packaging bag is ensured.

Description

Interior protruding air guide formula vacuum packaging bag

Technical Field

The invention belongs to the technical field of fresh-keeping vacuum packaging bag products, and particularly relates to an inward convex air-guide type vacuum packaging bag.

Background

Vacuum packaging is a packaging method in which a product is put into an airtight packaging container, and the air inside the container is evacuated to make the sealed container reach a predetermined vacuum degree. Under the condition of pumping out air and keeping high decompression, the vacuum packaging bag has little residual air in the bag, inhibits the propagation of microorganisms such as bacteria and the like, avoids the oxidation, the mildew and the putrefaction of articles, can enable the microorganisms to have no survival condition, and achieves the purposes of keeping fruits fresh and preventing diseases and rottenness.

The two sides of the existing vacuum packaging bag for the negative pressure type vacuum machine are common plastic films, the inner surfaces of the plastic films are smooth, flat films are generally adopted for manufacturing, when the vacuum is extracted, the phenomenon that the films close to the bag opening part are attached together can easily occur, the air in the bottom of the inner cavity of the bag body (namely, the air is far away from the bag opening part) is prevented from being extracted, so that the speed of vacuumizing is slower, the air is continuously extracted through blocking, the vacuumizing effect of the vacuum packaging bag is reduced, air residues in the bag are caused, the fresh-keeping effect is influenced, and the residual air in the bag is more. It is highly desirable to change the internal structure of the vacuum packaging bag so that the air in the bag can be easily and cleanly extracted by using a common vacuum extraction device.

Disclosure of Invention

The invention aims to provide an inward convex air-guide type vacuum packaging bag which is simple in structure and easy to exhaust air in the bag.

In order to solve the technical problems, the technical scheme of the invention is as follows: the utility model provides an interior protruding air guide formula vacuum packaging bag, it includes bag surface course and bag bottom, bag surface course and bag bottom connect jointly and enclose into the bag body that has the open end, its characterized in that: at least one side of the inner side surfaces of the bag surface layer and the bag bottom layer is provided with a plurality of bulges, air guide channels for communicating the inner cavity of the bag body with the opening end are formed between the bulges, and air in the inner cavity of the bag body is conveyed to the opening end through the air guide channels.

Further, the bulge of the inward bulge air guide type vacuum packaging bag is circular; or, the protrusion is formed by adjacently arranging any two or three of a circle, an octagon and an nonagon.

Further, in the inward convex air-guide type vacuum packaging bag, tearing notches for tearing the bag body to the inner cavity of the bag body are formed in the mutual connection positions of the bag surface layer and the bag bottom layer.

Further, in the internally convex air-guide type vacuum packaging bag, the tearing notch is arranged on the left side or the right side of the bag body.

Further, the open end of the internally convex air-guide type vacuum packaging bag is sealed by a zipper or a thermoplastic seal.

Compared with the prior art, the invention has the beneficial effects that: according to the invention, at least one of the inner side surfaces of the bag surface layer and the bag bottom layer is provided with the plurality of bulges, the air guide channels for communicating the inner cavity of the bag body with the opening end are formed between the bulges, the vacuumizing machine vacuumizes the inner cavity of the bag body through the opening end of the bag body, air in the inner cavity of the bag body is conveyed to the opening end through the air guide channels, and then the air is pumped out through vacuumizing.

Drawings

Fig. 1 is a schematic structural view of the present invention.

Fig. 2 is a top view of the present invention.

Fig. 3 is a first embodiment of the present invention.

Fig. 4 is a second embodiment of the present invention.

Fig. 5 is an enlarged view at a in fig. 4 (the arrow direction in the figure is the direction of air flow).

Fig. 6 is a schematic view of the structure of the vacuum packing machine.

In the figure: the bag comprises a bag body 1, a bag surface layer 2, a bag bottom layer 3, a bulge 4, an air guide channel 5, a tearing notch 6, a machine body 7, a heating strip 8, a vacuum cavity 9 and a sealing pressing strip 10.

Detailed Description

The present invention is described in further detail below with reference to the attached drawing figures.

As shown in fig. 1, the present embodiment provides an internally protruded air-guiding vacuum packaging bag, which comprises a bag surface layer 2 and a bag bottom layer 3, wherein the bag surface layer and the bag bottom layer are both made of a film, preferably a food-grade film. The bag surface layer 2 and the bag bottom layer 3 are connected together to form a bag body 1 with an open end, namely, one end of the bag body 1 is the open end, the open end is a so-called bag opening, the rest edge parts are jointed together through the bag surface layer 2 and the bag bottom layer 3, and the open end can be sealed through a zipper or a thermoplastic seal. Preferably, the mutually connected position of the bag surface layer 2 and the bag bottom layer 3 is provided with a tearing notch 6 for tearing the bag body 1 to the inner cavity of the bag body 1, the tearing notch 6 is arranged at the left side or the right side of the bag body 1, and the tearing notch 6 can be positioned at a position close to the opening end or a position close to the bottom end of the bag body according to different designs, so that the daily use of a user is facilitated.

As shown in fig. 1 to 4, at least one of the inner sides of the bag surface layer 2 and the bag bottom layer 3 is provided with a plurality of protrusions 4, and in a specific product manufacturing process, it is preferable that the protrusions 4 are simultaneously provided on the inner side of the bag surface layer 2 and the inner side of the bag bottom layer 3. An air guide channel 5 for communicating the inner cavity of the bag body 1 with the opening end is formed between the bulges 4, air in the inner cavity of the bag body 1 is conveyed to the opening end through the air guide channel 5, the vacuumizing machine performs vacuumizing operation on the inner cavity of the bag body 1 through the opening end of the bag body 1, air in the inner cavity of the bag body is conveyed to the opening end through the air guide channel 5, the air is then pumped out through vacuumizing, and during the vacuumizing operation, the air guide channel 5 formed between the bulges can keep the air in the bag body to be conveyed to the opening end of the bag body smoothly.

Fig. 3 shows the present embodiment 1, the protrusions 4 are circular and are arranged in several rows and several columns uniformly on the inner side of the bag surface layer 2 and the inner side of the bag bottom layer 3, and the width L of the gap formed between the protrusions 4 and the protrusions 4 is 0.5mm, as shown in fig. 3. Meanwhile, the protrusions 4 on the inner side of the bag surface layer 2 and the protrusions 4 on the inner side of the bag bottom layer 3 can be arranged in the following two vertical modes: (A) the bulges 4 on the inner side surface of the bag surface layer 2 and the bulges 4 on the inner side surface of the bag bottom layer 3 are mutually and correspondingly pressed up and down, namely the bulges 4 on the inner side surface of the bag surface layer 2 and the bulges 4 on the inner side surface of the bag bottom layer 3 are arranged in an up-and-down overlapping manner, the arrangement form ensures that the air guide channels 5 formed between the bulges 4 have enough height, ensures that the sucked air has enough high flow transmission gaps, and can also furthest prevent the air guide channels 5 from being blocked by foreign matters; (B) the mutual up-down dislocation set of the bulge 4 of the inner side surface of the bag surface layer 2 and the bulge 4 of the inner side surface of the bag bottom layer 3, namely, the bulge 4 of the inner side surface of the bag surface layer 2 and the bulge 4 of the inner side surface of the bag bottom layer 3 are arranged in a non-overlapping mode, the setting mode realizes that the air guide channel 5 has enough quantity from the other aspect, the air in the bag body can be rapidly sucked outwards, and the rapid vacuumizing effect is realized. When air in the inner cavity of the bag body 1 is pumped out, the opening end is connected with the pumping end of the vacuum-pumping machine, the bag surface layer 2 and the bag bottom layer 3 cannot be tightly attached due to the existence of the bulges 4, and air guide channels 5 are formed between the bulges. The air of opening end is taken out, the atmospheric pressure of opening end will be little than the atmospheric pressure of the 1 inner chamber bottom of the bag body, the opening end forms a negative pressure for the 1 inner chamber bottom of the bag body, the air of the 1 inner chamber bottom of the bag body will be taken out to the opening end fast consequently, the air of the 1 inner chamber of the bag body supplyes the flow along the direction of air guide channel 5 toward the opening end, until the air of the 1 inner chamber of the bag body is taken out completely, realize that the air in the wrapping bag is sucked totally, there is not remaining of air, compare that traditional inner chamber is the air that the vacuum packaging bag of plain noodles takes out.

As shown in fig. 4 to 5, in embodiment 2, the protrusions 4 are formed by arranging circular, octagonal and nonagon adjacently and differently, which are arranged and combined adjacently and differently in the longitudinal and transverse directions sequentially, the widths L of the gaps formed between the protrusions 4 of different shapes are different from each other, specifically, the shapes of the protrusions 4 adjacent to each other in the axial and longitudinal directions are different from each other, and the adjacent differences shown here refer to only the four directions of the upper, lower, left and right of each protrusion, so that the air draft effect between the adjacent gaps can form the air pressure difference between the gaps, which includes the high pressure and the low pressure between the opposite directions, thereby forming the pressure siphon action between the gaps and playing the role of auxiliary evacuation of the air flow. Meanwhile, in consideration of arrangement layout or differentiation in the longitudinal or transverse direction, the protrusions 4 in the oblique angle direction of each protrusion 4 may be the same shape, the overall gap width L1 between the circular protrusion 4 and the regular octagonal protrusion 4 is greater than 0.5mm, the overall gap width L2 between the regular octagonal protrusion 4 and the regular nonagon protrusion 4 is less than 0.5mm, and the overall gap width L3 between the regular nonagon protrusion 4 and the circular protrusion 4 is greater than 0.5 mm. In this technical solution, there are two vertical arrangement forms for the protrusions 4 on the inner side of the bag surface layer 2 and the protrusions 4 on the inner side of the bag bottom layer 3, which can be referred to the descriptions of (a) and (B) in the above embodiment 1, and are not described herein again. When air in the inward convex air-guide type vacuum packaging bag is pumped out, different local air pressure differences are formed between adjacent different bulges 4, air close to the opening end is firstly pumped out, so that the air at the bottom end of the inner cavity of the bag body 1 flows to local negative pressure along the air guide channel 5 as shown in fig. 5, part of the air guide channel 5 forms auxiliary air pumping, and all the air in the packaging bag finally flows to the opening end until the air is completely discharged out of the bag because the opening end always has local lowest pressure, compared with embodiment 1, the embodiment 2 can better realize the vacuum pumping effect, the air can be guided to flow out due to the formation of the local negative pressure, and the air can be pumped out more quickly and completely.

Additionally, as a variation of the embodiment, on the basis of the embodiment 2, the protrusion 4 may be formed by adjacently arranging any two of a circle, an octagon and a nonagon, i.e. the protrusion 4 may be a combination of a circle and an octagon, a combination of a circle and a nonagon, or a combination of an octagon and a nonagon, which may be set by a manufacturer as required.

Experiments prove that: when the oxygen concentration in the packaging bag is less than or equal to 1 percent, the growth and reproduction speed of the microorganisms is rapidly reduced, and when the oxygen concentration is less than or equal to 0.5 percent, most microorganisms are inhibited and stop reproducing. Vacuum oxygen removal, in addition to inhibiting the growth and reproduction of microorganisms, has another important function of preventing food oxidation, which causes the food to be stale and deteriorated due to oxidation of a large amount of unsaturated fatty acids contained in the fat-based food by oxygen, and in addition, vitamin A and C are lost due to oxidation, and unstable substances in food pigments are darkened by oxygen. Therefore, oxygen removal can effectively prevent food from deteriorating, and the color, the fragrance, the taste and the nutritional value of the food are kept.

In addition, the most used vacuum packaging is mainly made of film materials, and of course, the vacuum packaging also adopts bottling and canning. The film material used for vacuum packaging of food is required to ensure that the film material can achieve the best state in the aspects of packaging effect, attractiveness, economy and the like of various foods. Meanwhile, the vacuum packaging of food has higher requirements on the light resistance and stability of the material. When these requirements are not met with one material alone, the package is often made from a combination of several different materials. The material of the inner convex air-guide type vacuum packaging bag can be PE, RCPP, PA, AL, PET and the like, wherein the PE is suitable for low-temperature use, and the RCPP is suitable for high-temperature cooking; PA is used for increasing physical strength and puncture resistance; the AL aluminum foil is used for increasing the barrier property and shading light; PET, mechanical strength is increased, and stiffness is excellent. Then, various properties were combined as required, also transparent, and a water-resistant PVA high barrier coating was used in order to increase the barrier properties.

In order to match the sealing of the vacuum packaging bag of the above embodiment, it is obvious to those skilled in the art that the open end of the vacuum packaging bag may be sealed by a zipper, or the bag surface layer 2 and the bag bottom layer 3 may be sealed by a vacuum packaging machine through thermal sealing. The present invention preferably uses a vacuum packaging machine to heat seal the bag face layer 2 and the bag bottom layer 3 as shown in fig. 6. The household vacuum packaging machine comprises a machine body 7, vacuum cavities 9 are symmetrically arranged in the machine body 7 from top to bottom, a heating strip 8 is arranged on the upper layer of the machine body 7, a sealing pressing strip 10 is arranged around the opening of the vacuum cavity 9, the open end of an inner convex air-guide type vacuum packaging bag is placed between the heating strip 8 and the sealing pressing strip 10 of the vacuum packaging machine, and is not communicated with the vacuum cavity 9, so that the vacuum cavity 9 can be vacuumized. The sealing bead 10 is preferably a silicone strip, which has good elasticity and good sealing effect, and of course, all sealing beads used in the existing vacuum packaging machines can be selected. And then pre-compressing the heating strip 8 and the sealing pressing strip 10, and then pre-vacuumizing a vacuum cavity 9 of the vacuum packaging machine to further compress the heating strip 8 and the sealing pressing strip 10 through the negative pressure of the vacuum cavity 9. The vacuum cavity 9 is vacuumized, so that the air pressure of the vacuum cavity 9 is smaller than the external atmospheric pressure, the sealing pressing strip 10 arranged on one side of the vacuum cavity 9 is in a linkage downward pressing state of the heating strip 8 under the external atmospheric pressure, the heating strip 8 is further pressed, a gap between the heating strip 8 and the sealing pressing strip 10 is as small as possible, the heat of the heating strip 8 is transferred to the opening end of the inward convex air guide type vacuum packaging bag more fully, the sealing is more perfect under the action of the pressure, meanwhile, the processing precision of the sealing pressing strip 10, the sealing pad assembly and the like is also widened, and the production cost is reduced. Finally, the power supply is connected to electrify the heating strip 8 to heat, the opening end of the inner convex air-guide type vacuum packaging bag is heated, melted and bonded to seal the opening, the heating time is selected according to the actual situation, and the method can be easily realized by a person skilled in the art, and the detailed description is omitted.

The household vacuum packaging machine is suitable for sealing by using a composite film or an aluminum foil bag, has small and exquisite appearance, practical function and simple and convenient operation, the price of the single-chamber vacuum packaging machine is the most economical and practical type, the full-automatic small-sized vacuum packaging machine adopts a microcomputer program control operation system, the electromechanical integration technology is combined, and the daily life requirement of people is met to a great extent. Such as preserving food, preserving bedding, etc. The vacuum packaging machine is characterized in that a hot box fixing instant heating mode is adopted, energy is saved, special electric heating arrangement is adopted, heat is uniformly distributed, the machine body is small and exquisite, the occupied area is small, the sealing operation is simple and quick, and the operation is convenient.

The foregoing detailed description of the preferred embodiments of the invention has been presented. It should be understood that numerous modifications and variations could be devised by those skilled in the art in light of the present teachings without departing from the inventive concepts. Therefore, the technical solutions available to those skilled in the art through logic analysis, reasoning and limited experiments based on the prior art according to the concept of the present invention should be within the scope of protection defined by the claims.

Claims

1. The utility model provides an interior protruding air guide formula vacuum packaging bag, it includes bag surface course (2) and bag bottom (3), bag surface course (2) and bag bottom (3) are connected jointly and are enclosed into bag body (1) that have the open end, its characterized in that: the bag is characterized in that at least one side of the inner side surfaces of the bag surface layer (2) and the bag bottom layer (3) is provided with a plurality of bulges (4), air guide channels (5) for communicating the inner cavity of the bag body (1) with the opening end are formed between the bulges (4), and air in the inner cavity of the bag body (1) is conveyed to the opening end through the air guide channels (5).

2. The internally convex air-guide type vacuum packing bag according to claim 1, wherein: the bulges (4) are round.

3. The internally convex air-guide type vacuum packing bag according to claim 1, wherein: the bulges (4) are formed by adjacently arranging any two or three of a circle, an octagon and an nonagon in a different way.

4. The internally convex air-guide type vacuum packing bag according to claim 1, 2 or 3, wherein: the mutual connection position of the bag surface layer (2) and the bag bottom layer (3) is provided with a tearing notch (6) for tearing the bag body (1) to the inner cavity of the bag body (1).

5. The internally convex air-guide type vacuum packing bag according to claim 4, wherein: the tearing notch (6) is arranged on the left side or the right side of the bag body (1).

6. The internally convex air-guide type vacuum packing bag according to claim 1, wherein: the open end is sealed by a zipper or a thermoplastic seal.