WO2014131138A1

WO2014131138A1 - Air stop valve of airtight body

Info

Publication number: WO2014131138A1
Application number: PCT/CN2013/000199
Authority: WO
Inventors: 吕尚文
Original assignee: Lv shang-wen
Priority date: 2013-02-27
Filing date: 2013-02-27
Publication date: 2014-09-04

Abstract

An air stop valve of an airtight body (1), comprising: a first outer membrane (2a) and a second outer membrane (2b) that are stacked together, a first air stop valve arranged between the first outer membrane (2a) and the second outer membrane (2b). An air inlet passage (2d) of the air stop valve is arranged at an air column end and is heat sealed. Another heat-resistant material (1c') is coated between a first inner membrane (1a) and the second outer membrane (2a) of the air stop valve. The first inner membrane (1a) and the first outer membrane (2a) are heat sealed without being attached to each other to form another air inlet passage (2d'). The first inner membrane (1a) is provided on the surface thereof at a predetermined position with a plurality of linear geometrically patterned valve pieces (1a'). This allows the air inlet passage (2d) and the other air inlet passage (2d') to form a bend in an air passage. As such, when the internal pressure of a gas that enters an air column (11) is sufficiently strong, the bent air passage can then be tightly affixed together, thereby sealing the air column (11), thus preventing the gas sealed in the air column from back flowing through the original air passage, and achieving the optimal long-term airtight effect.

Description

Air sealing valve for air sealing body

The invention relates to a gas stop valve for an air sealing body, in particular to a gas stop valve which can effectively prevent the gas in the air sealing body from flowing back through the original air passage to achieve long-term air closing effect. Background technique

In recent years, air seals have become more and more popular for use in cushioning packaged articles. They are made of a resin film, which is sealed by heat sealing to form an air column, and is provided with an inflatable port for inflation, when the gas passes through the gas port. After being filled into the air column, the air seal can be used as an object cushioning material in the inner package.

The gas stop valve is formed by sealing a resin film through heat sealing, which can externally fill the gas into the air seal body through the gas inlet port, and prevent the air from flowing back by the gas stop valve to prevent the gas from sealing the gas outside the body. The gas stop valve is generally formed by two sheets of film coated with a heat-resistant material (such as: heat-resistant glue or ink) without being bonded together, and then formed by heat sealing to form a film between the two films. a gas passage through which the gas can be inflated into the air seal body, and as the gas in the air seal body increases, the pressure therein increases, so that when the gas is stopped, the two films of the gas stop valve are at gas pressure The action is applied to prevent the gas in the air sealing body from flowing outward.

The following is a schematic cross-sectional view of a gas stop valve when the existing air sealing body is inflated. As shown in FIG. 1, the air sealing body 1 comprises: two first outer film 2a and a second outer film laminated on top of each other. 2b, between the first outer film 2a and the second outer film 2b, a first inner film la and a second inner film lb are disposed, and the length is shorter than the first outer film 2a and the second outer film 2b. And heat sealing a plurality of heat seal lines 3, 4, 5 to heat the first outer film 2a and the second outer film 2b to form an inflation channel 9 and a gas column 1 1 , wherein the inflation channel 9 has An air inlet (not shown) may be connected to the external gas, the air column 1 1 is used for storing the gas; and another, the heat sealing point 2c is generated by heat sealing to follow the first outer film 2a and the first inner film La, the second outer film 2b and the second inner film lb, the first inner film 1a and the second inner film lb are coated with a heat-resistant material lc (for example, printing a heat-resistant glue or ink by printing), The heat sealing method causes the first inner film la and the second inner film 1b to form an air inlet passage 2d without being connected.

When the gas entering the inflation port expands the inflation channel 9, the first outer film 2a and the second outer film 2b are pulled outward, since the first outer film 2a and the first inner film la, the second outer film 2b and the second The inner membrane 1b is heat sealed and then the filling gas is pulled outwardly through the first inner membrane la and the second inner membrane lb which are not subsequently formed. After entering the air inlet passage 2d and entering the air column 1 1 , the internal pressure of the gas of the air column 11 will press the first inner membrane la or the second inner membrane lb to abut the air inlet passage 2d to close the air column 1 1 , so that the gas does not leak and achieve the effect of closing the gas.

However, according to the design, in the practical application, the film of the air inlet passage 2d formed by the first inner film la and the second inner film lb of the existing gas stop valve is pressed under the gas pressure in the air sealing body 1, It is still unable to effectively prevent the gas from following the original air passage backflow, and the air seal body 1 cannot achieve the effect of long-term air closing.

Therefore, how to design a kind of gas stop valve can prevent the gas in the air seal body from being kept out for a long time, and is a technical problem faced by the inventor of the present invention and the technical field engaged in the related industries. . Summary of the invention

In view of the shortcomings of the above-mentioned existing air sealing body, the design of the present invention has been improved and innovated, and finally successfully developed a gas sealing valve of the air sealing body of the present invention.

SUMMARY OF THE INVENTION A primary object of the present invention is to provide a gas stop valve of an air seal body, by which the design of the gas stop valve can effectively prevent the gas in the air seal body from flowing back through the original air passage to achieve long-term gas shutoff.

In order to achieve the above object, the technical solution adopted by the present invention is:

The air sealing body of the air sealing body, the air sealing body comprises a first outer film and a second outer film, and a gas stop valve is arranged between the two outer films, the gas sealing valve comprises Two pieces of the first inner film and the second inner film which are shorter in length than the two outer films, and are heat-sealed with a heat seal line which causes the two outer films to form an inflation port connectable to the outside air. Further sealing a plurality of heat sealing lines, the plurality of heat sealing lines forming the two outer films to form at least one gas column; and, in a heat sealing manner, generating a heat sealing point, the heat sealing point followed by the first outer film and the first An inner film, the heat seal point is further followed by a second outer film and a second inner film, and a heat resistant material is coated between the first inner film and the second inner film, and the two inner films are not further adhered by heat sealing. Forming an air inlet channel; characterized by:

The air inlet passage of the first inner membrane and the second inner membrane is heat sealed at the end of the air column with another heat sealing line, so that the air inlet passage at the end of the inner membrane is closed, and in the first inner membrane and the first inner membrane An outer heat-resistant material is coated between the outer film, and the first inner film and the first outer film are not heat-sealed to form another air inlet passage, and a plurality of predetermined openings are formed on the surface of the first inner film a linear geometry valve plate, such that the incoming filling gas is closed by the inlet passage, and the first inner membrane and the first outer membrane are pulled outward through the valve sheets to not follow Another incoming air passage is formed into the air column to form a transition of the air passage; when the internal pressure of the body entering the air column is large enough to press the second inner membrane, the first inner membrane and the upper valve plate thereof That is, the inward air passage and the other air inlet passage can be closely attached to each other to close the air column to prevent the gas in the air column from flowing back through the original air passage.

In the air lock valve of the air seal body: the linear geometry of the linear geometry valve plate is selected from one of a triangle, a rectangle and a circle.

Compared with the prior art, the present invention has the beneficial effects that: when the internal pressure of the gas entering the gas column is large enough to press the second inner membrane, the first inner membrane and the upper valve plate thereof, the turning The air inlet channel and the other air inlet channel are closely attached to each other, and the air column is closed to prevent the gas in the air column from flowing back through the original air passage, so that the gas achieves the best air closing effect for long-term air closing. DRAWINGS

1 is a schematic cross-sectional view of a gas stop valve of a conventional air sealing body when inflated;

2 is a schematic plan view of the air sealing body of the present invention before being inflated;

3 is a schematic cross-sectional view of a gas stop valve of the air sealing body in the air in the present invention;

Fig. 4 is a schematic cross-sectional view showing how the air sealing valve of the air sealing body of the present invention fits tightly after being inflated. detailed description

The present invention provides a gas barrier for an air sealing body. As described in the background of the present invention, the air sealing body 1 comprises: two first outer film 2a and a second outer film 2b laminated on top of each other. As shown in FIG. 3, a gas stop valve is disposed between the first outer film 2a and the second outer film 2b, and the gas stop valve includes a first inner film la and a second inner film lb. The length of the first inner film 1a and the second inner film 1b is shorter than the first outer film 2a and the second outer film 2b, and the first outer film 2a and the second outer film 2b are heat sealed by heat sealing. Sealing the heat seal lines 3, 4, the first outer film 2a and the second outer film 2b are followed by an inflation passage 9, as shown in Fig. 2 and Fig. 3, the inflation passage 9 has a gas connectable to the outside The inflation port 12 is such that an inflating device (not shown) can feed the gas through the inflation port 12; in addition, the first outer film 2a and the second outer film 2b are heat-sealed by heat sealing. Heat sealing lines 5, 6, and 7 to form the first outer film 2a and the second outer film 2b to form at least one gas column 1 1 for storing gas; further, heat sealing point 2c is generated by heat sealing Then the first An outer film 2a and a first inner film la, and then a second outer film 2b and a second inner film lb, and a heat resistant material lc is coated between the first inner film 1a and the second inner film 1b (the coating The heat resistant material can print the heat resistant glue or the heat resistant ink in a printing manner, and the first inner film la and the second inner film are heat sealed. The lb does not follow to form an air inlet passage 2d.

The aforementioned gas stop valve is unreliable after the air sealing body 1 is inflated, and cannot achieve the effect of long-term air closing. The following technical features of the present invention are designed to solve this problem.

Referring to FIG. 2 and FIG. 3 , the first inner membrane la and the second inner membrane lb of the air inlet passage 2 d are located at the end of the air column 11 to heat-seal the other heat seal line 8 in a heat-sealing manner. The first inner membrane la and the air inlet passage 2d at the end of the second inner membrane lb are closed, and the first inner membrane is coated between the first inner membrane 1a and the first outer membrane 2a by heat sealing. La and the first outer film 2a are formed without forming another air inlet passage 2d', and a plurality of linear geometrical valve sheets la are opened at a predetermined surface of the first inner film la, and the incoming high-pressure gas is introduced into the air. The passage 2d is closed and transferred through the valve sheets 1a, and the first inner membrane la and the first outer membrane 2a are pulled outward to enter the air column 1 1 without further forming the other air inlet passage 2d. To form a turning point in the air passage.

With the composition of the above components, as shown in FIG. 3 and FIG. 4, when the air sealing body 1 is inflated, the inflating device (not shown) can be used to feed gas to the air column through the inflation port 12. 1 1 , the gas entering the inflation port 12 is first expanded into the inflation channel 9 , and the first outer film 2 a and the second outer film 2 b are pulled outward, since the first outer film 2 a and the first inner film la, second The outer film 2b and the second inner film lb are heat-sealed, and then the filled gas is pulled outward to enter the inlet through the inlet channel 2d formed by the first inner film la1 and the second inner film lb. In the gas passage 2d, the gas inlet passage 2d is closed at the end of the gas column 1 1 by heat sealing another heat seal line 8 so that the gas entering the gas inlet passage 2d cannot continue to flow and expand the inlet. The gas passage 2d, in turn, pushes away the linear geometrical valve sheets la, so that the gas then passes through the linear geometrical valve sheets la into the first inner membrane la and the first outer membrane Between 2a, then pull out again through another one that does not The air inlet channel 2d enters the air column 1 1 .

Finally, after the gas enters the gas column 1 1 , the internal pressure of the gas entering the gas column 1 1 is large enough to press the second inner membrane lb, the first inner membrane la and the upper valve plate la thereof, and then the turning The air inlet channel 2d and the other air inlet channel 2d are closely attached to each other to close the air column 1 1 to prevent the gas in the air column 1 1 from flowing back through the original air passage, so that the gas reaches a long-term air-tight state. The best air-closing effect.

Thus, the inflow air passage 2d and the other air inlet passage 2d' form a turning air passage, so that the charged gas cannot directly enter the air column 1 1 , and must pass through the above-mentioned turning air passage before being inflated. In the gas column 1 1 , therefore, when the turning air passage is closed, the gas in the gas column 1 1 cannot directly pass through the turning air passage, and is deflated outwardly, so that the gas column 1 1 is filled. In the air, It can achieve the best air-closing effect of long-term closed air.

In the foregoing embodiment of the present invention, the other heat resistant material lc' is coated between the first inner film la and the first outer film 2a, and the plurality of linear geometric valve sheets la are opened in the first a surface of the inner film la is predetermined, and of course, another heat resistant material lc may be coated between the inner film lb and the second outer film 2b, and the second inner portion is heat-sealed. The film lb and the second outer film 2b form the other air inlet channel 2d without being connected, and the plurality of linear geometric valve sheets la are opened outside the surface of the second inner film lb to pull the second inner film The lb and the second outer film 2b enter the air column 1 1 with another air inlet passage 2d which is not formed to form a turning of the air passage.

Referring to Figures 2 and 3, the linear geometry of the linear valve plate la, can be a triangle, a rectangle or a circle.

Referring to Figures 2 and 3, the air sealing body 1 can be made of a plastic material.

The above description is intended to be illustrative, and not restrictive, and many modifications, variations or equivalents may be made without departing from the spirit and scope of the invention. All will fall within the scope of protection of the present invention.

Claims

Rights request

An air sealing body comprising a first outer film and a second outer film, wherein a gas stop valve is disposed between the two outer films The valve comprises two first inner and second inner membranes having a length shorter than the two outer membranes, and is heat-sealed with a heat seal line which causes the two outer membranes to form a connection to the outside air. a plurality of heat seal lines, wherein the plurality of heat seal lines cause the two outer films to form at least one gas column; and further, heat seal points are generated by heat sealing, and the heat seal points are followed by the first outer film And the first inner film, the heat seal point is further followed by a second outer film and a second inner film, and a heat resistant material is coated between the first inner film and the second inner film, and the two inner films are sealed by heat sealing. An air inlet channel is not formed; it is characterized by:

The air inlet passage of the first inner membrane and the second inner membrane is heat sealed at the end of the air column with another heat sealing line, so that the air inlet passage at the end of the inner membrane is closed, and in the first inner membrane and the first inner membrane An outer heat-resistant material is coated between the outer film, and the first inner film and the first outer film are not heat-sealed to form another air inlet passage, and a plurality of predetermined openings are formed on the surface of the first inner film a linear geometry valve plate, such that the incoming filling gas is closed by the inlet passage, and the first inner membrane and the first outer membrane are pulled outward through the valve sheets to form another inlet which is not formed The gas passage enters the gas column to form a transition of the air passage; when the internal pressure of the gas entering the gas column is large enough to press the second inner membrane, the first inner membrane and the upper valve plate thereof, the turning The air inlet passage and the other air inlet passage are closely attached to each other to close the air column to prevent the gas in the air column from flowing back through the original air passage.

2. The air lock valve of an air seal according to claim 1, wherein: the linear geometry of the linear geometry valve is selected from the group consisting of a triangle, a rectangle, and a circle.