WO2016015608A1

WO2016015608A1 - A rupturable sealing bag

Info

Publication number: WO2016015608A1
Application number: PCT/CN2015/085167
Authority: WO
Inventors: 金朝阳; 高新明
Original assignee: 北京文海阳工贸有限责任公司
Priority date: 2014-08-01
Filing date: 2015-07-27
Publication date: 2016-02-04
Also published as: CN104192423B; CN104192423A

Abstract

A rupturable sealing bag (1) having a press fit area (3) and/or an indentation line (4) provided thereon. The press fit area (3) is an area formed by bonding the inner surface or the outer surface of the sealing bag (1)together, the indentation line (4) is arranged on the wall of the sealing bag (1), and the thickness of the indentation line (4) is 0.1-0.9 times that of the wall of the sealing bag (1). Part or whole of the periphery of the sealing bag (1) can be provided with a sealing edge (5). The sealing bag (1) can be folded arranged and formed with a folding position (7). According to the sealing bag (1), the conflict between the storage reliability and the rupturability of the sealing bag (1) is avoided, and the sealing bag (1) has good storage reliability as well as stable and controllable rupturability, particularly, the rupture and release positions of content can be designed and predicted.

Description

a rupturable sealing capsule

Technical field

The invention relates to a rupturable sealing capsule, belonging to the technical field of packaging.

Background technique

The storage-breakable sealed capsule is used in the commodity packaging market of medicines and cosmetics, and the physical product application has been seen, but the existing storage-breakable sealing capsule is generally obtained by using a shell made of a low-strength material. The release, this is a contradictory system, too high shell strength storage is safer and more reliable, but it is more difficult to use its broken function, and vice versa, it is often difficult to achieve the desired results. Therefore, it is important to provide a sealed bladder that meets both the strength requirement and the breaking function.

Summary of the invention

The object of the present invention is to provide a rupturable sealing jaw, and the sealing capsule provided by the invention can achieve better effect between storage and rupture; the invention has obtained the structure of the capsule cavity through mechanical structure analysis and a large number of experiments. The area of stress concentration under external force is squeezed, and a special structural setting is made on the surface of the cavity to finally release the stress at a point or line, controlling the final fracture area.

The rupturable sealing capsule provided by the invention is provided with a pressing area and/or a score line;

The nip area is 1) or 2) below:

1) a region where the inner surfaces of the sealed bladder are bonded to each other;

2) a region where the outer surfaces of the sealed capsules are bonded to each other;

The score line is disposed on the wall of the sealed capsule and has a thickness of 0.1 to 0.9 times the thickness of the sealed capsule wall.

In the above sealing capsule, the nip may be such that the sealing bladder is heat-fused and/or bonded to press the inner surface of the sealing bladder with the inner surface or the outer surface and the outer surface to form a partial The pleated or pre-stretched region, such that when the capsule cavity of the sealed capsule is pressed by an external force, the stress is extended and the peripheral edge of the region is concentratedly released to cause the sealed bladder to break and release the contents. Among them, the inner surface of the sealed capsule cavity is mutually fused by heat sealing and the nip area is obtained, which is the most convenient and reliable form in engineering.

In the above sealed capsule, the score line is another pre-cracking means, and the score line is unfinished The indentation of the entire penetrating wall may be obtained by means of hot working or shallow cutting on the inner or outer surface of the sealed bag. The score line is configured to provide a controlled stress concentration relief region when the sealed bladder is compressed.

In the above sealed capsule, when the sealing capsule is provided with a nip and a score line at the same time, the nip and the score line may be separated. The simultaneous setting of the nip and the score line can achieve a better controllable crushing effect. The score line may be specifically disposed at an edge of the nip.

In the above sealing capsule, part or all of the periphery of the sealing capsule may be provided with a sealing edge, the sealing edge being distinguished from the pressing area by a position, in particular, the inner surface of the peripheral material of the sealing capsule may be utilized The inner surface and/or the inner surface and the outer surface are welded or bonded to each other. The size of the sealing edge may be specifically set according to the size of the contents of the sealing capsule and the applicable place of the sealing capsule. The sealing edge may be around the entire circumference of the entire sealing capsule, or may be a sealing edge formed by welding around the opening position of the sealing capsule. The form may be a three-side sealing edge or a back sealing sealing edge, and may also be It is a sealed capsule formed by sealing the sealing edges at both ends of the cylindrical material. If the balloon is formed by the warp, it may be more than four sealing edges, that is, the warp of the balloon.

In order to reduce the inner space of the sealing capsule, the content of the sealing capsule is more filled, and the crushing when the external force is applied is more favorable. The sealing capsule provided by the invention can be folded and formed into a folded position; the folding position can be specifically The nip and/or the score line intersect.

In order to prevent the folding from slipping during pressing, the breaking of the sealing capsule is performed after being folded once, and the sealed sealing edge and/or the sealing capsule wall which are folded after being folded are adhesively fixed or bound by a fixing device. Specifically, the overlapping sealing edges can be adhesively fixed; the sealing capsules can be restrained by a fixing device after being disposed for several times.

According to the analysis of computer finite element mechanics, when the cavity is pressed, the tensile stress will be distributed to the area near the edge. It is more effective to design the broken area at these positions. The sealing edge and the folded position after folding can be regarded as A form of the rim, such that in the sealed bladder described above, the nip and/or the score line may be disposed at or near the edge of the sealed bladder or the sealing edge.

The material of the sealing capsule provided by the invention may be a plastic film or a composite film; the plastic film may be polyethylene (PE), polypropylene (PP), polyethylene terephthalate (PET) and two-way pulling Any one of a polypropylene film (BOPP), nylon, polyvinyl chloride, etc.; the composite film may be a composite of the above materials, specifically polyethylene (PE) and biaxially oriented polypropylene film (BOPP) Composite material, polypropylene (PP) and polyethylene terephthalate (PET) Composite material. It may also be a composite material containing a metal layer such as polyethylene terephthalate (PET), aluminum, polyethylene (PE), a three-layer composite material PET/Al/PE. The outer layer material of the normally sealed capsule which constitutes the sealing capsule material by composite material may specifically be a material with low drawing depth such as polyethylene terephthalate (PET) or biaxially oriented polypropylene film (BOPP), and the inner layer material. Specifically, it may be a material that can be welded, such as polypropylene (PP) or polyethylene (PE).

In the sealed capsule provided by the present invention, the shape of the nip may be any one of a circle, an ellipse, a square, a wedge and a triangle, and specifically may be a rectangle, an ellipse or a wedge.

The shape of the score line may be any one of a zigzag shape, a circular shape, an elliptical shape, a square shape, a straight line shape and a continuous wave shape, and specifically may be a sinusoidal waveform. After the actual experiment, the linear effect is the worst, and the zigzag shape is too weak. The sinusoidal waveform peak-valley position or the elliptical long-axis top effect is most suitable;

The sealing bladder has a wall thickness of 0.01 mm to 1.5 mm.

The contents of the sealed bladder provided by the present invention may be a gas and/or a liquid, or a mixture of a solid and at least one of a gas and a liquid.

The rupturable sealing jaw of the invention changes the contradiction between the storage reliability and the breakability of the sealing jaw, so that it has good storage reliability and stable and controllable breakability, especially can be designed And the location where the contents are expected to be broken and released.

DRAWINGS

Figure 1 is a schematic view of the structure of a rupturable sealing jaw provided with a nip.

Figure 2 is a cross-sectional view taken along line A-A' of Figure 1.

Fig. 3 is a structural schematic view showing the sealing capsule shown in Fig. 1 folded in half.

Figure 4 is a cross-sectional view of a rupturable sealing jaw provided with a nip, wherein the nip is formed by the outer surface of the bladder being bonded to the outer surface.

Figure 5 is a schematic view of the structure of a rupturable sealing jaw provided with a score line and a sealing edge.

Figure 6 is a schematic view showing the structure of the sealing capsule shown in Figure 5 after the folded edges are further bonded by overlapping sealing edges.

Figure 7 is a cross-sectional view taken along line B-B' of Figure 6.

Fig. 8 is a structural schematic view showing the sealing cymbal shown in Fig. 5 after being folded a plurality of times and then fixed to a Z-shaped structure by a fixing device.

Figure 9 is a schematic view of the sealing capsule provided with a plurality of nips, wherein the nip is located inside the sealing edge and intersects the sealing edge.

Figure 10 is a schematic view showing the structure in which a rectangular press-fit area is provided and a score line is provided on the outer edge of the press-fit area.

The labels in the figure are as follows:

1 sealed bladder, 2 contents, 3 nip, 4 score lines, 5 sealing edges, 6 fixing devices, 7 folding positions

Best mode for carrying out the invention

The experimental methods used in the following examples are conventional methods unless otherwise specified.

The materials, reagents and the like used in the following examples are commercially available unless otherwise specified.

Embodiment 1. A rupturable sealing capsule provided with a nip area

(1) Preparation of sealed capsule

Figure 1 is a schematic view of the structure of a rupturable sealing jaw 1 having a nip 3 . Among them, the sealing capsule has a length of 40 mm and a width of 30 mm, and is made of polyethylene and has a thickness of 0.043 mm. In the present example, the content 2 of the sealed capsule is 5 mL of water, and it is generally difficult to completely avoid the existence of bubbles, so that it is actually a state in which gas and water coexist.

It can be seen from Fig. 1 that the nip area 3 of the sealing capsule is elliptical, and the long axis is 12 mm and the short axis is 6 mm. The pressing is performed by hot pressing. The specific operation is: using an elliptical hot pressing mold on the outer surface of the capsule. The pressure is applied to fuse the inner surfaces of the capsules to each other to obtain the nip area 3 as shown, and the hot pressing temperature is 130 to 165 ° C and the pressure is 12.5 kg/cm ² . The arrangement of the nip 3 causes the surface of the sealed bladder 1 to undergo a tensile deformation, and the tensile force of the sealed bladder 1 when it is squeezed is concentrated at the boundary of the nip 3, especially the elliptical long axis end. The wedge tip is the most susceptible to cracking.

Fig. 2 is a cross-sectional view taken along line A-A' of Fig. 1, from which the relationship between the nip 3 and the sealed capsule 1 and the contents 2 can be seen.

(2) Folding the sealed capsule in (1)

The rupturable sealed capsule 1 shown in Fig. 1 is folded in half, and the effect diagram after folding is shown in Fig. 3. Folding reduces the inner volume of the sealed bladder, making it more full and facilitating crushing. In addition, a new folded position 7 is created after folding, so that the nip 3 is close to the edge of the sealing capsule, and the folded position 7 becomes the new edge of the sealing capsule, bringing the nip 3 close to the newly formed edge of the sealing capsule and being folded Position 7. After applying the computer for finite element mechanical analysis, it can be found that the maximum tensile deformation zone is often concentrated at the edge of the capsule when the sealing capsule is squeezed, so that the edge of the nip 3 approaches and passes through the area to control the fracture area, causing crushing and crushing. The effect of releasing the contents is better.

The nip 3 can also be hot pressed after folding, so that the formed pressure zone 3 is not only the fusion of the inner surface of the opposite side of the sealing capsule, but constitutes the top-to-lower-inner-outer-outer-inner- The inner four-layer sealing capsule wall is melted into an integrated pressing zone, which makes the processing and processing more convenient, and can also have a fixed function to the folding position 7 to prevent it from sliding.

(3) Mechanical contrast experiment

In order to compare the crushing effect of the sealing capsule provided with the nip 3, the sealing capsule shown in Fig. 1, the sealing capsule shown in Fig. 3 and the same sealing and the contents are the same as the sealing capsule shown in Fig. 1 without the nip. The capsule (control group) was subjected to a crushing test by a pressure gauge. The pressure gauge was selected by YISIDA (DS2-2000N), and the pressure was applied by two 100 mm×100 mm 10 mm thick steel plates, and the sealed capsule was placed at the center of the lower steel plate platform. The upper steel plate is fixed on the pressure gauge sensor, and the lower steel plate is lifted by the screw rod. When the two steel plates are squeezed out of the sealed bladder, the pressure release process is recorded by a computer connected pressure gauge, and the peak data when the sealed capsule bursts is the crushing pressure. 10 seals were prepared for each type of sealed bladder, 10 pressure tests were performed, and an average of 10 data results were obtained. The crushing pressure measurement results are shown in Table 1:

Table 1. Test results of crushing pressure of each sealed capsule

产品product	平均值average value	最大值Maximum	最小值Minimum value
产品product	平均值average value	最大值Maximum	最小值Minimum value	图1所示密封囊Figure 1 shows the sealed capsule	7.3kgf7.3kgf	23.5kgf23.5kgf	4.3kgf4.3kgf
图3所示密封囊Figure 3 shows the sealed capsule	5.2kgf5.2kgf	21.2kgf21.2kgf	6.7kgf6.7kgf	图1所示密封囊Figure 1 shows the sealed capsule	7.3kgf7.3kgf	23.5kgf23.5kgf	4.3kgf4.3kgf
图3所示密封囊Figure 3 shows the sealed capsule	5.2kgf5.2kgf	21.2kgf21.2kgf	6.7kgf6.7kgf	对照组(普通密封囊)Control group (ordinary sealed capsule)	77.1kgf77.1kgf	169kgf169kgf	51.3kgf51.3kgf

The sealing capsule shown in FIG. 1 is a sealing capsule provided only with the pressing area 3, and the sealing capsule shown in FIG. 3 is a sealing capsule which is folded in the sealing capsule shown in FIG. 1 , and the control group has no pressing area. A sealed pouch of the same material, size, and contents that is not folded.

From the above data, it can be concluded that the sealing capsule (shown in Figure 1) provided with the nip and the sealed capsule (shown in Figure 3) after folding have a lower crushing pressure and are easier to use; The sealing capsule of the zone (control group) has a very high crushing pressure and is almost impossible to reach with human hands. However, if the sealing capsule without the nip area (control group) is to achieve the same crushing pressure, it is possible to use a thinner film, usually less than 0.03 mm, but such a film is extremely poor in mechanical strength, general transportation or Friction will cause it to break and has no practical value.

(4) nip area is provided by bonding the outer surface of the sealing capsule to the outer surface

In addition to as shown in FIG. 1, the inner surface of the sealing capsule 1 is pressed against the inner surface to form the nip 3, and the outer surface of the capsule wall of the sealing capsule 1 can be pressed against the outer surface and extended to the sealing capsule. Inner cavity, The nip 3 shown in Fig. 4 is formed. The specific operation is as follows: before filling the liquid, pressing the inner side of the capsule to fuse the outer surface of the sealed capsule 1 with the outer surface to form a nip area 3, and then filling the liquid to close the filling port. As in the previous embodiment, the edge of the nip area also forms a breakable line, so that the sealed bag is easily broken when squeezed.

Similarly, in practice, the above-mentioned sealed capsule can also pinch the side wall of the capsule from the outside to form an inner-inner surface adhesively extending to the nip area 3 outside the sealed capsule, and the same is true when the sealed capsule is squeezed. The sealed bladder can be broken from the outside of the nip 3 .

Example 2, a rupturable sealing capsule provided with a score and a sealing edge

(1) Preparation of sealed capsule

The sealed capsule 1 provided by the present invention may also be provided with a score line 4 and a sealing edge 5, as shown in FIG. The sealing jaw 1 has a length of 50 mm and a width of 35 mm and is made of a PET/Al/PE composite material; the thickness is 0.02 mm/0.006 mm/0.06 mm. In the embodiment, the content 2 is sealed in the sealing crucible 1, specifically, 4.5 mL of paraffin oil and 0.5 g of 60 mesh quartz sand. The sealing pouch 1 is surrounded by a piece of aluminum foil composite film, and the sealing edge 5 is at the opening 3 thereof. The surface is pressed and sealed, and the sealing side is 7mm wide.

As shown in Fig. 5, an S-shape (notch line 4) was embossed with a hot knife above the liquid storage area in the middle of the sealed bladder 1 to a depth of 0.02 mm. The PET layer of the sealed bladder is broken, but the underlying aluminum foil layer and PE layer can still keep the sealed bladder 1 closed. When the sealed bladder 1 is squeezed, it will be broken from one of the two curved top ends of S, and the paraffin oil mixed with the solid quartz sand will be released from the break.

(2) Folding and sealing the sealed bladder in (1)

Fig. 6 is a view in which the sealed capsule 1 shown in Fig. 5 is folded and the score line 4 is outward, and the score line 4 passes through the folded position 7, and the overlapping sealing edges 5 are bonded and fixed by glue. Folding causes the sealed bladder to fill more and pushes the score line 4 toward the newly created edge of the sealed bladder 1 so that the stress is more concentrated on the edge region of the score to cause it to break.

Figure 7 is a cross-sectional view of the folded sealed bladder 1 of Figure 6, from which the positional relationship between the sealing edge 5, the contents 2 and the folded position 7 can be better seen.

(3) Mechanical test

The experimental apparatus of Example 3 was used to test the crushing pressure of the sealed bladder shown in Fig. 5 and the sealed bladder shown in Fig. 6. The experimental results are shown in Table 2:

Table 2, each sealed capsule fracture pressure test results

product

average value

图5所示密封囊Figure 5 shows the sealed capsule	19.2kgf19.2kgf
图5所示密封囊Figure 5 shows the sealed capsule	19.2kgf19.2kgf	图6所示密封囊Figure 6 shows the sealed capsule	9.7kgf9.7kgf

5 is a sealed bladder with a score 4 and a sealing edge 5; and FIG. 6 is a sealed bladder with a score 4 and bonded to the overlapping sealing edges after folding.

It can be seen from Table 2 that the folded and fixed sealing capsule is more likely to be broken, because the sealed sealing capsule is more filled, which is more favorable for the crushing when the external force is applied; the fixing can prevent the folded parts when the sealing capsule is pressed. Sliding open makes it difficult to break.

Fig. 8 is a schematic view showing the sealed capsule 1 having the score 4 or the nip 3 repeatedly folded and fixed by a fixing means 6 such as a tape. Multiple folding can greatly enhance the filling degree of the sealing capsule, and binding is necessary, otherwise the sealing capsule which is folded many times can be easily opened.

Embodiment 4, a sealing capsule provided with a nip area on the inner side of the sealing edge

Fig. 9 shows a sealing capsule provided with two nips 3, the sealing cymbal 1 shown having a length of 70 mm and a width of 55 mm, which is made of BOPP/PP composite material and having a thickness of 0.06 mm/0.06 mm. The contents 2, specifically 6.5 mL of water, were sealed in the sealed crucible 1 and the remaining space was flushed with air.

The sealing capsule 1 is formed by heat sealing of two composite membranes on four sides. The inner surface of the composite membrane is pressed against the edge of the inner surface to obtain a sealing edge 5, and the sealing edge is 5 mm wide. Two wedge-shaped nips 3 abut against the inside of the left sealing edge 5 in the illustration, while being disposed in the region of the sealing bladder containing the sealing contents 2, with the tapered tip side pointing to the right reservoir in the figure. When the right region of the sealed bladder 1 is pressed, the stress concentrates on the wedge-shaped tip of the left nip region 3, and one of the wedge-shaped tips is first broken by the contents 2 to be released. Since the manual extrusion of the sealed capsule will be slightly different each time, the stress concentration area may not be completely uniform at a time, and the provision of a plurality of pressing areas in the stress concentration area may increase the probability of squeezing the sealed capsule, so that the nip may be provided by setting the nip area. The position and number control the area and force of release, so that the contradiction between storage stability and fragmentation is well regulated.

The experimental apparatus of Example 3 was used to test the sealing capsule of the embodiment shown in FIG. 9 and the average value of the crushing pressure was 23.0 kgf; the sealing capsule of the embodiment shown in FIG. 9 was not provided with the nip area, and the above test method was even exceeded. The limit of the instrument 200kgf also failed to burst.

Embodiment 5, a sealing capsule with a score line at the edge of the sealing edge

Figure 10 is a sealing capsule 1 provided with a rectangular pressing portion 3 and a score line 4 on the outer edge of the pressing portion. The sealing cymbal 1 is shown in the figure, the length is 100 mm, the width is 65 mm, and the material is PE sheet. Material, thickness 0.5mm. The contents 2, which is 1 g of talc solids, are sealed in the sealing bowl 1, and the remaining space is blown with air. The sealing capsule 1 is surrounded by a piece of material and is heat sealed to the rear three sides. Sealed, the heat sealing edge is the sealing edge 5, the sealing edge width is 10mm, the pressing zone 3 is 10mm width/50mm length, and the outer edge of the pressing zone 3 is pressed by the pressing knife to inscribe a depth of 0.3 to 0.4mm, and the sealing is sealed. The capsule 1 is divided into two airbag regions by pressing and zone 3, and the airbag is pressed against the side with a maximum contact area of 50 mm × 50 mm. When the pressure reaches about 45 kg to 75 kg, the sealing capsule bursts, and the gas and talcum powder are released.

If there is no press-bonding zone 3 or score line 4, even if the apparatus is pressurized to 160 kg, the PE sheet undergoes expansion deformation and the capsule cavity does not burst at all.

In the embodiment, the nip area 3 is rectangular. In the actual process: angle type and round shape are feasible solutions. Different nip areas can adjust different crushing pressures. The general rule is a pressure with a sharp shape. The junction will cause the pressure to break down.

It should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, and are not intended to be limiting, although the present invention will be described in detail with reference to the preferred embodiments. The modifications and equivalents of the present invention are intended to be included within the scope of the appended claims.

Claims

A rupturable sealing capsule, characterized in that: the sealing capsule is provided with a pressing area and/or a score line;

The nip area is 1) or 2) below:

1) a region where the inner surfaces of the sealed bladder are bonded to each other;

2) a region where the outer surfaces of the sealed capsules are bonded to each other;

The score line is disposed on the wall of the sealed capsule and has a thickness of 0.1 to 0.9 times the thickness of the sealed capsule wall.
The sealing capsule according to claim 1, wherein the sealing capsule is provided with a nip and a score line, and the score line is separated from the nip.
The sealed bladder of claim 2 wherein said score line is disposed at an edge of said nip.
A sealed bladder according to any one of claims 1 to 3, wherein a part or all of the periphery of the sealed bladder is provided with a sealing edge.
A sealed bladder according to any one of claims 1 to 4, wherein the sealed bladder is folded and formed into a folded position.
A sealed bladder according to claim 5 wherein said folded position intersects said nip and/or said score line.
The sealing capsule according to claim 5 or 6, wherein the sealing capsule is provided in a single fold, and the sealing edge and/or the sealing capsule wall which are overlapped after being folded are adhesively fixed or fixed by a fixing device. Carry out the bondage.
A sealed bladder according to claim 5 or claim 6 wherein the sealed bladder is disposed over a plurality of folds and is restrained by a fixture.
A sealing capsule according to any one of claims 1-8, wherein the nip or/and the score line intersect or are close to the edge of the sealed bladder or the sealing edge Settings.
The sealing capsule according to any one of claims 1 to 9, wherein the sealing capsule is made of a plastic film or a composite film;

The shape of the nip area is any one of a circle, an ellipse, a square, a wedge, and a triangle;

The shape of the score line is zigzag, circle, ellipse, square, straight line and continuous wave Any of the waves;

The sealing bladder has a wall thickness of 0.01 mm to 1.5 mm.