CN210503904U - Novel sealed package box - Google Patents

Abstract

The utility model provides a novel sealed package box, the packing carton is including box body and the sealed cover that is used for holding article, the box body is equipped with the opening, the open-ended periphery is equipped with the platform that extends to the outside, the platform has sunken and/or arch with the sealed position of sealed cover contact, sunken and/or bellied height is 10 ~ 500 microns, the width is 10 ~ 1000 microns, the range density on the platform is 4 ~ 10⁴The ratio of the maximum height to the minimum bottom width of the depressions and/or projections is 0.01 to 50. The packing box can bear certain internal and external pressure difference, obviously improves the sealing property of the box body, and can be suitable for special (if the internal pressure is greater than the internal pressure)External pressure) environment or an article (such as a condom) which is used in a common environment but has a high requirement on sealing performance, so that the risk of accidental breakage of the packaging box in the transportation and storage processes is reduced; additionally, the utility model provides a packing carton has easily opening, characteristics that facilitate the use simultaneously.

Description

Novel sealed package box

Technical Field

The invention relates to the technical field of box body packaging, in particular to a packaging box which has better sealing performance and can bear a certain internal and external pressure difference. According to the packaging box provided by the invention, the box body is fully attached to the sealing cover, so that an extremely fine gap can be avoided, a certain internal and external pressure difference can be borne, the sealing property of the box body is obviously improved, and the applicable environment is increased; in addition, the packing box provided by the invention can simultaneously keep the characteristic of easy opening. The packaging box is particularly suitable for storing products which have high requirements on tightness and can bear certain pressure, such as products used aloft or underwater, condoms, medicated injectors and the like.

Background

The sealed package of the box body is a package form widely used in daily life, and the purpose is to isolate the environment inside and outside the package, thereby preventing leakage and cross contamination inside and outside the package, and the jelly box package is a common box body package. Two key elements of the box packaging technology are sealing performance and easy unsealing, and it is a long-sought goal of those skilled in the art to provide a package with better sealing performance and easy unsealing at the same time.

Through many trial surveys, for an adult, the unsealing force needs to be controlled within 50N, and the packaging box is relatively easy to open.

The inside and outside pressure of packing carton under the ordinary pressure environment is unanimous, does not have pressure differential, and the sealed department of packing carton does not have the atress, and as long as sealed complete when the encapsulation, the inside and outside environment of packing carton is completely isolated, and the leakproofness of packing just can be better keep.

However, in a special environment, the external environment pressure of the package box may change, which may cause the internal pressure and the external pressure of the package box to be inconsistent, and generate an internal-external pressure difference, for example: when the packaging box is in a high space (such as high-altitude food), the external air pressure is reduced, and the pressure in the packaging box is higher than the external pressure; when the package is under water (e.g., an object being transported under water), the external pressure rises and the pressure inside the package will be lower than the external pressure. When the internal pressure and the external pressure of the packing box are inconsistent, stress can be generated at the sealing part of the packing box, and if the sealing strength of the sealing part is not enough to resist the stress, the situation of sealing cracking can occur under the action of the stress. Therefore, under the condition of the existence of the difference between the internal pressure and the external pressure, the packing box has higher sealing requirement to resist the stress caused by the difference between the internal pressure and the external pressure.

Although some special products are also used in an atmospheric environment, a higher sealing property of the sealed package is desired for safety. In the case of condoms, which are a medical device for fertility control and prevention of the transmission of Sexually Transmitted Diseases (STDs), strict requirements are imposed on the tightness of the individual packages of each product; as failure of the seal can result in leakage of product lubricant and exposure of the product to air which can accelerate product degradation and reduce safety performance. The tightness of the condom individual package is evaluated by the ability of the sealed package to resist the stress caused by the internal and external pressure difference under the condition of the internal and external pressure difference, maintain the integrity of the package and avoid leakage. Specifically, the requirement of annex N of ISO 4074-2015 Natural rubber latex binders-requisitions and test methods is met as qualified, and the requirement is as follows: each individual condom package passes the tolerance test for at least 60 seconds under vacuum pressure of (20 + -5) kPa, and no burst leakage occurs within 60 seconds.

The condom jelly box package is a new package form of condoms in recent years, and is very popular among young people because of richer design forms and better visual effect. As mentioned above, the condom jelly box must also meet the requirements of ISO 4074-.

As known to those skilled in the art, jelly box packaging typically employs a polypropylene (PP) or polyvinyl chloride (PVC) sheet material that is blow (suction) molded into a box; after a product is put in, a film is covered on the box opening, and then the opening platform of the box body is attached and sealed with the film through hot pressing.

Since the sealing of the jelly box is performed by thermocompression bonding the platform at the opening of the box body and the film, it is difficult and uneconomical to achieve sufficient press-sealing strength by directly adjusting temperature and pressure under the existing material and technical conditions. For example, with the prior art, a common sheet material such as Polystyrene (PS) is too softened and deformed after the heat sealing temperature exceeds 125 ℃, so that the sheet material cannot be processed into a box body smoothly; at a relatively low temperature (110 ℃), the jelly box sealed by hot pressing under the pressure of 100MPa still cannot meet the sealing performance requirements of ISO 4074-.

In addition, the difficulty of unsealing the sealed package of the jelly box is related to the adhesion degree between the box body platform and the membrane material, and the higher the adhesion degree is, the more difficult the unsealing is. While the sealability of condom individual packages is characterized by the resistance of the package to vacuum pressure of (20 + -5) kPa, a higher degree of adhesion means a better package sealability. Therefore, the jelly box package has a contradiction problem: the better the seal, the more difficult it is to unseal.

Therefore, how to apply the jelly box sealing package to condom packaging not only ensures that the condom jelly box packaging meets the sealing requirement of the condom product standard and the safety of the condom in use, but also ensures that the consumer can easily open the package when using the condom product packaged by the jelly box and gives consideration to the convenience of product use, and the packaging form is a technical problem in the current condom industry. Similar situations also occur in some other special environments, such as where a sealed package is required for use in high altitude or low pressure environments.

In order to overcome the above technical problems and provide a box packaging solution with better sealing performance and easy unsealing, those skilled in the art have made various attempts:

chinese patent CN 1228216C discloses a technical solution for ensuring sealability and easy opening by forming double sealing lines at the edges of the package. However, analysis shows that the package can meet the sealing requirement under the common environment, but is not suitable for the special environment with the internal and external pressure difference and is not suitable for the package of condoms.

There is therefore still a need to provide a package which is better sealed and at the same time easy to unseal, and which can be used for special articles (such as condoms) or which still meets the sealing requirements in special (such as internal and external pressure differences) environments.

Disclosure of Invention

Based on the problems, the invention overcomes the defects of the prior art, provides the packaging box which can bear a certain internal and external pressure difference (the internal pressure is greater than the external pressure), obviously improves the sealing property of the box body, can be suitable for packaging articles (such as condoms) with high requirements on the sealing property, and reduces the risk of accidental breakage of the packaging box in the transportation and storage processes; in addition, the packaging box provided by the invention has the characteristics of easiness in opening and convenience in use. The invention takes the sealed package of the condom jelly box as an example, and better illustrates the creativity and the practicability of the technical scheme of the invention.

In order to achieve the purpose, the invention adopts the technical scheme that:

a novel sealed packaging box is shown in figure 1 and comprises a box body 1 and a sealing cover 2, wherein the box body is used for containing articles, an opening is formed in the box body, a platform 3 extending towards the outside is arranged on the periphery of the opening, the sealing cover is in contact with and sealed with the platform, a concave portion 4 and/or a convex portion 5 are arranged at the position where the platform is in contact with the sealing cover, the maximum height of the concave portion and/or the convex portion is 10-500 micrometers, the width of the minimum bottom face of the concave portion and/or the convex portion is 10-1000 micrometers, and the arrangement density of the concave portion and/or the convex portion on the platform is 4-10⁴The ratio of the maximum height to the minimum bottom width of the depressions and/or projections is 0.01 to 50. When in packaging, the article is placed in the box body, and the box body platform is attached and sealed with the sealing cover by methods of heating, pressurizing, bonding with an adhesive and the like, so that the effect of isolating the article in the box body from the external atmospheric environment is achieved.

According to the novel sealed packaging box provided by the invention, the contact part of the platform and the sealing cover is provided with the recess and/or the protrusion, so that the contact area of the platform and the sealing cover after sealing can be increased, and the sealing strength is higher than that of the platform which is completely a flat surface under the condition that the box body and the sealing cover have the same adhesion degree. By limiting the maximum height and minimum base width of the depressions and/or projections and the density to the above ranges, the sealed package can pass the sealability test (maintained in water for 60 + -5 seconds without stable continuous bubbles overflowing) under a vacuum pressure of 25 kPa; meanwhile, the ratio of the maximum height to the minimum bottom width of the recess and/or the protrusion is controlled to be 0.01-50, and the unsealing force can be controlled within 50N.

Preferably, the ratio of the maximum height to the minimum bottom width of the depressions and/or projections is 0.02 to 3. Therefore, the control of the unsealing force can be further controlled within 20N, and the unsealing is easier.

Preferably, the compressive rupture strength of the sealing cover is greater than or equal to 0.1 MPa.

Preferably, the indentations and/or protrusions are distributed on the platform in at least one of a matrix, an isobar pattern, a radial pattern, and a grid pattern, and the ordered arrangement of the indentations and/or protrusions helps to provide a uniform seal and also maintains a constant force required to unseal the package.

Preferably, the platform takes the inner side as a starting point and takes a part 0.1-1 mm away from the inner side as a flat surface; the flat surface is flat and does not have any recess and/or protrusion, so that the possible contact between the recess and/or protrusion on the platform and the articles in the box body can be avoided, and the articles can be prevented from being damaged.

Preferably, the depressions and/or the protrusions are at least one of columnar, conical, truncated pyramid and segment-shaped, or are linear three-dimensional structures with a cross section perpendicular to the center line in the shape of at least one of triangle, trapezoid, rectangle and circle.

The invention provides a preferable scheme of a novel sealed packaging box, which comprises the following steps: the platform takes the inner side as a starting point to a position 0.1-1 mm away from the inner side as a flat surface, and the rest parts are provided with depressions and/or protrusions, and the depressions and/or protrusions take 4-10 mm²The density of each square millimeter, the mode of a row-column lattice or the mode of a concentric circle with the center of the box body as the center of a circle are arranged on the platform at equal intervals, the maximum height of the concave and/or convex is 10-300 micrometers, the width of the minimum bottom surface is 100-500 micrometers, and the maximum height of the concave and/or convex are equal to each otherThe ratio of the minimum bottom width is 0.02 to 3. Therefore, the unsealing force can be controlled within 20N, and the unsealing is easy; meanwhile, the contact area of the platform and the sealing contact object can be increased more, the sealing performance is better, the sealing performance test can be passed under the vacuum pressure of 25kPa (the vacuum pressure is maintained in water for 60 +/-5 seconds without overflowing stable continuous bubbles), and the sealing performance test can also be passed under the more severe conditions such as 20kPa, 15kPa, 10kPa, 5kPa and even 0 kPa.

Preferably, the volume of the novel sealed packaging box is more than or equal to 2.4cm³。

The novel sealed package box body provided by the invention can be made of one or more blending materials of high polymer materials such as polypropylene (PP), polyvinyl chloride (PVC), Polystyrene (PS) and the like, or a composite material of the high polymer materials and metal.

The sealing cover of the novel sealing packaging box provided by the invention can be a soft film or a hard film made of metal, high polymer or a composite of metal and high polymer.

Preferably, the box body is made of PVC materials, and the sealing cover is an aluminum-plastic composite film.

The novel sealed package box provided by the invention can seal the box body by covering the sealing cover on the platform through heating or pressurizing, and can also seal the box body by adhering the sealing cover on the platform through an adhesive.

Preferably, the novel sealed packaging box is used for packaging products used aloft or underwater, such as condoms, medicated syringes and the like.

In conclusion, the beneficial effects of the invention are as follows:

the invention provides a novel sealed packing box, which is characterized in that a part of a box body opening platform, which is contacted with a sealing cover, is provided with a recess and/or a bulge. Compared with the sealing packing box with a platform which is a flat surface, the novel sealing packing box has obviously improved sealing performance and is suitable for special (if a certain internal and external pressure difference exists) environments or articles (such as condoms) with high sealing requirements; meanwhile, the technical scheme provided by the invention has the characteristic of easy unsealing and is convenient to use.

Drawings

FIG. 1 is a schematic view of an unsealed package of one embodiment of the sealed package of the present invention;

FIG. 2 is a schematic view of an unsealed sealed package of one embodiment of the present invention wherein the platform has an inverted quadrangular frustum of a pyramid shaped recess;

FIG. 3 is an enlarged oblique view of the detail of FIG. 2;

FIG. 4 is an enlarged top view of the detail of FIG. 2;

FIG. 5 is a schematic view of an unsealed package of one embodiment of the sealed package of the present invention; wherein the platform has a bulbous protrusion;

FIG. 6 is an enlarged oblique view of the detail of FIG. 5;

FIG. 7 is an enlarged top view of the detail of FIG. 5;

FIG. 8 is a schematic view of a conventional sealed package arrangement;

the box comprises a box body 1, a box body 2, a sealing cover 3, a platform 4, a recess 5 and a protrusion.

Detailed Description

Some of the names, test samples, test methods, cited standards involved in the present invention are briefly described below:

test sample

The embodiment of the invention takes a jelly box sealed packaging box (a condom is placed inside) as an example to illustrate the purpose and the beneficial effect of the technical scheme provided by the invention.

The condom jelly box sealing package used in the embodiment of the invention is characterized in that the sheet material of the box body is made of PVC material, and the sealing cover is an aluminum-plastic composite film.

The condom jelly box sealed packages used in the embodiments of the present invention were all prepared using consistent production parameters.

Unsealing force (strength) test

Fixing an intact condom jelly box sealed package sample aluminum-plastic composite film on a lower clamp of a tensile testing machine upwards, and clamping an unsealing point of the aluminum-plastic composite film by an upper clamp; a tensile force testing machine is operated at a tensile speed of 50 mm/min, and the jelly box package is unsealed along a direction vertical to the box opening; and recording a tension-time curve, and reading a relatively stable maximum value F on the curve, namely the unsealing force (strength).

Tightness test

Arranging a container which can be vacuumized and contains water; packing 32 intact condom jelly boxes under 25mm of water surface; vacuumizing the container, and stopping vacuumizing when the set vacuum pressure is reached; the set vacuum pressure (60 + -5) is maintained for a second to see if there are stable and continuous bubbles escaping from the package. If stable and continuous bubbles overflow, the test fails, and the result is recorded as D; otherwise, the test is passed, and the result is recorded as A.

Reference standard

ISO 4074：2015《Natural rubber latex male condoms——Requirements andtest methods》

GB 7544: 2009' technical requirements and test methods for natural latex rubber condoms

To better illustrate the objects, aspects and advantages of the present invention, the present invention will be further described with reference to the accompanying drawings and specific embodiments. The values of the parameters used in the present invention are averages of a plurality of groups or a plurality of times, unless otherwise specified.

Example 1

In an embodiment of the sealed package of the condom jelly box of the invention, as shown in fig. 2 (fig. 3 to 4 are detailed enlarged schematic views of fig. 2), a part of the platform 3 contacting the sealing cover 2 is provided with a recess 4 from a position 0.5 mm (width) from the inner side of the platform to a position 0.5 mm (width) from the outer side of the platform; the depressions are arranged in a matrix of rows and columns at equal intervals, and the density is 4 per square millimeter; the recess is in the shape of an inverted quadrangular frustum pyramid, and the upper side length (the minimum bottom surface width) is L₁Lower side length of L₂And the height is H.

The samples of this example are designated samples 1-1, 1-2, … … 1-35, and the dimensional parameters of the samples are listed in Table 1.

Table 1 jelly box with inverted quadrangular frustum pyramid-shaped depressions on platform

Example 2

An example of a sealed package of a condom jelly-box according to the invention, differing from samples 1-7 of example 1 only in that the density of the arrangement of depressions is 16, 36, 64, 100, 10000 per square millimetre.

The samples of this example are designated samples 2-1, 2-2, 2-3, 2-4 and 2-5.

Example 3

In an embodiment of the sealed package of the condom jelly box of the invention, as shown in fig. 5 (fig. 6-7 are detailed enlarged schematic views of fig. 5), a part of the platform 3 contacting with the sealing cover 2 is provided with a bulge 5; the bulges are arranged in concentric circles at equal intervals in the center of the jelly box, and the density is 4 per square centimeter; the bulge is in a segment shape, the diameter of the bottom surface of the segment is D, and the height of the segment is H.

The samples of this example were designated as samples 3-1, 3-2, … … 3-17, and the dimensional parameters of the samples are listed in Table 2.

Table 2 sealed jelly container with platform having bulbous protrusions

Serial number	Diameter D/mum of bottom surface of segment	Height H/mum of bottom surface of segment
			3-1	500	50
3-2	400	50
			3-3	300	50
3-4	200	50
			3-5	100	50
3-6	500	100
			3-7	400	100
3-8	300	100
			3-9	200	100
3-10	100	100
			3-11	500	200
3-12	400	200
			3-13	300	200
3-14	200	200
			3-15	500	300
3-16	400	300
			3-17	300	300

Example 4

The samples of example 1, example 2 and example 3 and the control 1 and control 2 were taken and tested for their unsealing force (strength) F.

Wherein the reference 1 (shown in FIG. 8) is a jelly box with the same size as the 1-1 sample, wherein the contact part of the platform and the sealing cover is a flat surface; control 2 was a jelly box having the same height parameters as samples 1-7 except for height parameters, and had a height of 600 microns.

Wherein the length L of the upper edge of the sample 1 series and the sample 2 series is taken₁Calculating an aspect ratio H/W as the width W; for the series of samples 3, the ball segment bottom diameter D was taken as the width W, and the aspect ratio H/W was calculated.

The test results are shown in Table 3.

TABLE 3 aspect ratio and unsealing force of jelly box

The test result shows that the sealed packaging box provided by the invention has the recess and/or the protrusion with the specified size on the platform, and the ratio of the maximum height to the minimum bottom width of the recess and/or the protrusion is controlled to be 0.01-50, so that the unsealing force can be controlled to be less than 50N, more preferably, the ratio of the maximum height to the minimum bottom width of the recess and/or the protrusion is controlled to be 0.01-3, the unsealing force can be controlled to be less than 20N, and the unsealing is easier.

Example 5

The samples from example 1 and example 2, control 1 and control 2 were taken and tested for sealability at different vacuum pressures P, which were standard test conditions for condom products at 25 kPa.

The test results are shown in Table 4.

Table 4 jelly box tightness test

The test result shows that the technical scheme of the invention can improve the sealing property by increasing the contact area of the platform and the sealing contact object; all samples can pass the test under the standard test pressure of the condom with the vacuum pressure of 25kPa, and the unsealing force can be controlled within 50N, so that the unsealing is easy for adults; for some products of the preferred embodiment of the present invention, the sealability test may be passed under more severe conditions such as vacuum pressure of 20kPa, 15kPa, 5kPa, or 0 kPa. The platform of the reference substance 1 has no recess and/or projection, and can not pass the tightness test; the platform of the comparison product 2 has concave and/or convex parts, but the height-to-width ratio is too large, the unsealing force reaches 63.5, and the unsealing is difficult.

In conclusion, the novel sealed packaging box provided by the invention can obviously improve the sealing property, is easy to open, and is particularly suitable for objects (such as condoms and the like) with extremely high sealing property or environments with certain pressure difference.

Claims (14)

1. The utility model provides a novel sealed package box, its characterized in that, is including box body and the sealed cover that is used for holding article, the box body is equipped with the opening, the open-ended periphery is equipped with the platform that extends to the outside, sealed cover with the platform contact is sealed together, the packing carton opens the back, the position that platform and sealed cover contacted has sunken and/or arch, sunken and/or bellied maximum height is 10 ~ 500 microns, sunken and/or bellied minimum bottom surface width is 10 ~ 1000 microns, sunken and/or bellied range density on the box body is 4 ~ 10⁴The ratio of the maximum height to the minimum bottom width of the depressions and/or projections is 0.01 to 50.

2. The novel sealed package of claim 1, wherein the ratio of the maximum height to the minimum base width of the depressions and/or projections is 0.02 to 3.

3. The new sealed package of claim 2, characterized in that the breaking strength of the sealing cover is not less than 0.1 MPa.

4. The novel sealed package according to any one of claims 1 to 3, wherein the depressions and/or protrusions are distributed on the platform in at least one of a matrix, an isobaric matrix, a radial pattern, and a grid pattern.

5. The novel hermetically sealed package of claim 4, wherein the flat surface is a flat surface from the inner side as a starting point to a position 0.1 to 1 mm away from the inner side.

6. The novel sealed package of claim 3 or 5, wherein the geometrical shape of the concave and/or convex is at least one of a column, a cone, a pyramid, a segment of a sphere, or a linear three-dimensional structure with a cross section perpendicular to the central line being at least one of a triangle, a trapezoid, a rectangle, and a circle.

7. A novel sealed package according to claim 6, wherein the depressions and/or protrusions are provided in the range of 4 to 10²The density of each square millimeter, the density of each square.

8. The novel sealed package of claim 5 or 7, wherein the volume of the novel sealed package is greater than or equal to 2.4cm³。

9. The novel sealed package box of claim 8, wherein the material of the box body is one or more of polypropylene (PP), polyvinyl chloride (PVC), Polystyrene (PS) and other polymer materials, or a composite material of polymer materials and metals.

10. The novel sealed package of claim 8, wherein the sealing cover is a soft or hard film made of metal, polymer, or a combination of metal and polymer.

11. The novel sealed package box of claim 8, wherein the box body is made of PVC, and the sealing cover is made of aluminum-plastic composite film.

12. A novel sealed package according to any of claims 1, 2, 3, 5, 7, 9, 10 or 11, characterised in that the sealing cover seals the packet by applying heat to the platform, or by applying pressure to the platform, or by adhering an adhesive to the platform.

13. The new sealed package of claim 12, wherein the sealing cover seals the enclosure by heat pressing over the platform.

14. The new sealed package of claim 13, wherein the new sealed package is used for packaging condoms.

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