CN210883333U - Air sealing bag without air valve film - Google Patents

Abstract

The utility model provides an air sealing bag without an air valve film, which only has two layers of outer films and no inner film; the upper end and the lower end of the two-layer outer film are respectively provided with an upper heat sealing line and a lower heat sealing line along the width in a transverse direction, the two-layer outer film is bonded into a bag body with a left opening and a right opening, and a plurality of longitudinal heat sealing lines are arranged upwards from the lower heat sealing line to separate the bag body into a plurality of continuous sealed air chambers; a fork is arranged at the top of the longitudinal heat sealing line and is divided into a left isolation heat sealing line and a right isolation heat sealing line; the left isolation heat seal line and the right isolation heat seal line extend upwards together, and then are reconnected and combined into a closed isolation sealing ring; an air inflation channel is arranged between the top of the isolation sealing coil and the upper heat sealing line; an air inlet channel is arranged between the left isolation heat sealing line and the right isolation heat sealing line; after the synchronous inflating heat sealing device is matched with the synchronous inflating heat sealing device for use, the air can be inflated and heat sealed at the same time, the air inlet channel is sealed and locked after the air is inflated, and the air locking is safer and more reliable; and the material cost is greatly reduced.

Description

Air sealing bag without air valve film

Technical Field

The utility model relates to an air seal bag packing field, more specifically say, be a simple structure, aerify convenient air seal bag of no air valve membrane of shaping.

Background

The air type sealing bag commonly used in the packaging field at present can not be separated from a four-layer film structure, and adopts two layers of thicker outer films as bag body outer layers with certain firmness, and two layers of thinner inner films as air valve films for air intake and check after air intake, so that the air-filled sealed shockproof packaging bag is formed. It can be seen that the two-layer inner film is an indispensable material component of all air-type sealing bags at present, and the air valve film structure formed by the two-layer inner film is also an important means for realizing the sealing effect of the bag body, so that different improvements are made to the structure of the air valve film of the two-layer inner film, and dozens of domestic utility model patents and numerous utility model patents have been formed since 2000, such as "a self-adhesive film non-return air packaging material and a manufacturing method thereof" of patent No. 200510025833.4, "an air buffer body with a device for automatically closing and locking air by a sealing body and a manufacturing method thereof" of patent No. 200610067311.5, "an air sealing body" of patent No. 201610025010.X, and the like, which are all numerous, but never leave the traditional four-layer film structure.

Along with the continuous development of domestic electronic commerce in recent years, online commodity transaction is increasingly active, so that the market demand of shockproof air sealing bags for commodity packaging and transportation is increased, and price competition is also intensified; in order to obtain price advantage, a plurality of manufacturers only save materials and reduce cost by continuously reducing the thickness of the outer film layer; some manufacturers even reduce the thickness of the outer membrane layer to 1-4 filaments, which is the same as the thickness of the inner membrane, and reach the limit. Therefore, the thickness of the four-layer film is always close to a value of 2 times of the thickness of the two-layer film, and the heat sealing temperatures corresponding to the films with different thicknesses are different, so that when the four-layer film and the two-layer film are rolled by the same heat sealing roller, the heat sealing temperature close to the temperature difference of 2 times is required to be close to the thickness difference of 2 times, and for some heat sealing lines, such as a longitudinal heat sealing line between isolation air chambers, the lower part of the heat sealing line is a heat sealing two-layer film, and the upper part of the heat sealing line is a heat sealing four-layer film, so that the situation that the four-layer film is required to be completely detached and sealed, the two-layer film is required to. At present, an air sealing bag without an air valve film, which has lower cost and is more convenient to inflate, is lacked.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects in the prior art, completely abandon the traditional four-layer membrane structure, provide an air sealing bag without an air valve membrane, which has lower cost and more convenient inflation and forming,

in order to achieve the above object, the present invention provides the following technical solutions:

an air sealing bag without an air valve film only has two outer films and no inner film; the upper end and the lower end of the two-layer outer film are respectively provided with an upper heat sealing line and a lower heat sealing line along the width in a transverse direction, the two-layer outer film is bonded into a bag body with a left opening and a right opening, and a plurality of longitudinal heat sealing lines are arranged upwards from the lower heat sealing line to separate the bag body into a plurality of continuous sealed air chambers; a fork is arranged at the top of the longitudinal heat sealing line and is divided into a left isolation heat sealing line and a right isolation heat sealing line; the left isolation heat seal line and the right isolation heat seal line extend upwards together, and then are reconnected and combined into a closed isolation sealing ring; an inflation channel is arranged between the top of the isolation sealing ring and the upper heat-sealing line; an air inlet channel is arranged between the left isolation heat sealing line and the right isolation heat sealing line; the compressed air enters from the inflation channel transversely and then enters each sealed air chamber vertically through the parallel air inlet channels.

As a further improvement of the utility model, the inlet and the outlet of the air inlet channel are in the shape of a horn flaring.

As a further improvement of the utility model, the junction of the air inlet channel and the sealed air chamber is provided with an air-blocking heat sealing block.

As a further improvement of the utility model, the air-blocking heat sealing block is in any shape of inverted U-shaped, inverted V-shaped, in-line, circular and triangular.

The utility model also discloses a method of implementing the air seal bag of no air valve membrane, including following step:

(1) the bag body of the air sealing bag without the air valve film is made of two layers of outer films and can be wound into a cylinder according to the length for standby;

(2) when the inflation is carried out, the inflation straight pipe is inserted into the air inlet channel of the bag body for inflation; simultaneously stretching the bag body from a roll;

(3) a cutting knife is arranged at the rear upper part of the inflatable straight pipe; with the further forward extension of the inflation straight pipe, the cutting knife can crack the upper heat seal line of the bag body along with the cutting so as to ensure that the inflation straight pipe extends forward;

(4) a heat-sealing roller opposite to the cutting knife is arranged below the rear part of the inflatable straight pipe; the heat-sealing roller can heat-seal the two outer membranes along with the further advancing of the inflatable straight tube; the generated transverse heat-sealing line respectively passes through the left isolation heat-sealing line, the right isolation heat-sealing line and the air inlet channel, so that the air inlet channel is sealed and does not leak air;

(5) the speed of stretching the bag body from the winding drum and the inflation pressure coming out of the inflation straight pipe are configured, so that the inflation straight pipe can move forward at a constant speed while inflating under the cooperation of the cutting knife, and the heat-sealing roller performs heat-sealing closure on the air inlet channel at the moment when the sealed air chamber is inflated sufficiently.

The utility model also discloses a synchronous inflation heat sealing device for implementing the air sealing bag without the air valve film, which comprises an inflation straight pipe communicated with the air pump, wherein a cutting knife is arranged at the rear upper part of the inflation straight pipe; and a heat-sealing roller opposite to the cutting knife is arranged below the rear part of the inflation tube.

Compared with the prior art, the air sealing bag without the air valve film reduces the material of the two layers of inner films, thereby greatly reducing the cost; the synchronous inflation heat sealing device of the utility model can realize the simultaneous inflation and heat sealing, and the air inlet channel is sealed and locked after inflation, so that the air locking is safer and more reliable; compared with the traditional check of an air valve film, the utility model is more concise and practical; and the utility model discloses a bag body material can convolute into a section of thick bamboo in advance, cooperates the utility model discloses a synchronous inflatable heat-sealing device uses together, can realize automatic operation to can be as required, the fixed length preparation is realized at will.

Drawings

FIG. 1 is a schematic structural view of an air sealing bag without an air valve film according to the present invention;

fig. 2 is a schematic structural view of the synchronous inflation and heat sealing device of the present invention.

In the figure: 1, an upper heat sealing line, 2, a lower heat sealing line, 3, a longitudinal heat sealing line, 31, a left isolation heat sealing line, 32, a right isolation heat sealing line, 4, a sealing air chamber, 5, an isolation sealing ring, 6, 7, 8, an air blocking heat sealing block and 9, a transverse heat sealing line;

11 air pumps, 12 inflation straight pipes, 13 cutting knives and 14 heat sealing rollers.

Detailed Description

The technical solution of the present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

As shown in fig. 1, the air sealing bag without the air valve film of the present invention has only two outer films and no inner film; the height of the two-layer outer film can be determined according to the conditions of the height of the model of the product to be packaged and the like, and different specifications are made in advance for later use; the width of the packaging bag can be infinitely long, the packaging bag is wound into a tube, and the packaging bag is drawn out for a certain distance to be cut according to the requirement of the packaging length during use. An upper heat sealing line 1 and a lower heat sealing line 2 are respectively transversely arranged along the width of the upper end and the lower end of the outer membrane in the height direction of the outer membrane and are used for bonding the two outer membranes; a plurality of parallel longitudinal heat-sealing lines 3 are uniformly arranged upwards from the lower heat-sealing line 2 and used for dividing the bag body into a plurality of continuous sealed air chambers 4; the sealed air cells 4 are inflated to form shock-proof cushion parts of the packaged product, and even if one of the air cells is broken, the sealing of the other air cells is not affected.

A fork is arranged at the top of the longitudinal heat sealing line 3 and is divided into a left isolation heat sealing line 31 and a right isolation heat sealing line 32; as shown in fig. 1, the left and right insulating heat- seal lines 31 and 32 are extended upward together and then joined again to form a closed insulating seal ring 5 having an O-shape or an oval shape, but preferably having a flat straight top portion to form an air-filled passage 6 with the upper heat-seal line 1.

The parallel channel between the left isolation heat seal line 31 and the right isolation heat seal line 32 is an air inlet channel 7; the inlet and the outlet of the air inlet channel 7 are both in a trumpet flaring shape, so that the air is convenient to flow and smoothly discharged. The compressed air enters laterally from the inflation channel 6 and then vertically through each of the juxtaposed inlet channels 7 into each of the plenums 4.

The connecting part of the air inlet channel 7 and the sealed air chamber 4 is provided with an air blocking heat sealing block 8, the air blocking heat sealing block 8 is in any shape of an inverted U shape, an inverted V shape, a straight line shape, a round shape and a triangular shape and is used for offsetting the air pressure from the sealed air chamber 4 to the air inlet channel 7, so that the air pressure in the air charging channel 6 is ensured to be in a smaller constant value, and the operation is convenient.

As shown in figure 2, the utility model also discloses a synchronous inflation heat sealing device, which is used with the air sealing bag without the air valve film. The device comprises an inflatable straight pipe 12 communicated with an air pump 11, and a cutting knife 13 is arranged at the rear upper part of the inflatable straight pipe 12; a heat-seal roller 14 opposite to the cutter 13 is arranged below and behind the inflation tube 12. The utility model discloses the concrete step of implementation includes:

(1) the bag body of the air sealing bag without the air valve film of the utility model is made of only two layers of outer films, and can be wound into a cylinder according to the length for standby;

(2) when the inflation is carried out, the inflation straight pipe 12 is inserted into the air inlet channel 7 of the bag body for inflation; simultaneously stretching the bag body from a roll;

(3) a cutting knife 13 is arranged at the rear upper part of the inflatable straight pipe 12; with the further advancing and extending of the inflation straight pipe 12, the cutting knife 13 can crack the upper heat seal line 1 of the bag body along with the further advancing and extending of the inflation straight pipe 12;

(4) a heat-sealing roller 14 opposite to the cutting knife 13 is arranged below the rear part of the inflatable straight pipe 12; as the inflation straight pipe 12 further advances, the heat-sealing roller 14 can heat-seal the two outer films; the generated transverse heat-seal line 9 respectively passes through the left isolation heat-seal line 31, the right isolation heat-seal line 32 and the air inlet channel 7, so that the air inlet channel 7 can be sealed and does not leak air;

(5) the speed of stretching the bag body from the winding drum and the inflation pressure coming out of the inflation straight pipe 12 are configured, so that the inflation straight pipe 12 can move forward at a constant speed while being inflated under the matching of the cutting knife 13, and the heat-sealing roller 14 performs heat-sealing closing on the air inlet channel 7 at the moment when the sealed air chamber 4 is inflated sufficiently.

Finally, it should be noted that the above list is only one specific embodiment of the present invention. Obviously, the utility model discloses can also have many deformations, all according to the utility model discloses the patent conception structure, characteristics and principle do equivalence or simple change, all be included in the protection scope of the utility model patent. All modifications which can be derived or suggested by a person skilled in the art from the disclosure of the invention should be considered as within the scope of the invention.

Claims (4)

1. An air sealing bag without an air valve film only has two outer films and no inner film; the upper end and the lower end of the two-layer outer film are respectively provided with an upper heat sealing line (1) and a lower heat sealing line (2) along the width in a transverse direction, the two-layer outer film is bonded into a bag body with a left opening and a right opening, a plurality of longitudinal heat sealing lines (3) are arranged upwards from the lower heat sealing lines (2), and the bag body is divided into a plurality of continuous sealed air chambers (4); the heat-insulating and heat-insulating device is characterized in that the top of the longitudinal heat-insulating line (3) is provided with a fork which is divided into a left heat-insulating and heat-insulating line (31) and a right heat-insulating and heat-insulating line (32); the left isolation heat-sealing line (31) and the right isolation heat-sealing line (32) extend upwards together, and then are connected again to form a closed isolation sealing ring (5); an inflation channel (6) is arranged between the top of the isolation sealing ring (5) and the upper heat sealing line (1); an air inlet channel (7) is arranged between the left isolation heat seal line (31) and the right isolation heat seal line (32); the compressed air enters from the charging channel (6) transversely and then enters into each sealed air chamber (4) vertically through the parallel air inlet channel (7).

2. The air-tight bag without air valve membrane according to claim 1, characterized in that the inlet and outlet of the air intake channel (7) are flared.

3. The air-tight bag without air valve film according to claim 1, characterized in that the connection of the air inlet channel (7) and the air chamber (4) is provided with an air-blocking heat-sealing block (8).

4. The air-tight bag without air valve film according to claim 3, wherein the air-blocking heat-sealing block (8) is in any one of the shapes of inverted U, inverted V, I-shaped, circular and triangular.

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