TWM485211U - Air-ventilation structure with a heat-shrinkable tape - Google Patents

Abstract

An air-ventilation structure with a heat-shrinkable tape comprises a film provided with at least one ventilation-slit. The tape is affixed to one surface of the film and completely covers the ventilation-slit. The tape is heat-shrinkable and one part of an adhesive surface thereof is a normal sticky area, and the other part of the adhesive surface is a weak sticky area, wherein the adhesion of the normal sticky area is greater than the weak sticky area, the weak sticky area covers the ventilation-slit.

Description

Exhaust structure with heat shrinkable tape

The present invention relates to an exhaust structure, and more particularly to an exhaust structure having a heat shrink tape.

In order to achieve good exhaust/ventilation characteristics, one or more ventilation holes are formed on the surface of the object in the conventional technology, so that the gas inside the object can convect with the gas outside the object or flow in a single direction. However, in the case where sealing is required, such as packaging of food, in order to maintain the quality and hygiene of the food inside the package, it is not suitable to provide ventilation holes at the beginning of the package, but to encapsulate the food in a sealed manner, only When heating, use external force to make the surface of the package to vent the air hole, or directly tear the packaging film to avoid the expansion of the air inside the package after heating, causing the package to burst and the food to be scattered.

However, this not only causes complicated work when the food is heated, but also tends to cause impurities on the hands or tools to fall on the food and affect food hygiene during the process of using external force. In view of this situation, it is necessary to design a package that is kept closed and that automatically and hygienically exposes the venting holes upon heating without the intervention of external force.

There is currently a food package developed on the market for the above problems. The food package is provided with one or more ventilation holes in advance on the surface of the packaging film, and the air holes are formed by using tape. Sealed, when the food package is about to be heated, use a manual peel off of the tape to expose the air vents. However, such a design still requires the staff to manually remove the tape, and is not completely automated, and the perfect design is excluded from the intervention.

In view of the above-mentioned problems of the prior art, the purpose of the present invention is to provide a film with a heat shrinkable tape and a venting zone, so that the packaging container to which the film is applied will automatically and hygienically expose the venting zone when heated. There is no need to use a tool to poke holes or manually tear the film to create ventilation holes, which not only saves labor costs, but also improves the overall hygiene.

According to the purpose of the present invention, the present invention proposes a film with a heat shrinkable tape and a venting zone, wherein the film has at least all seams, and the heat shrinkable tape is adhered to a portion of the film so that the tape completely covers the at least All the seams, wherein the adhesive tape has heat shrinkage characteristics, and part of the adhesive surface of the adhesive tape is a common adhesive region, and another adhesive surface of the adhesive tape is a weakly adhesive region, and the adhesiveness of the ordinary adhesive region is greater than the weak adhesiveness. The viscosity of the sexual area. Preferably, the weakly viscous region of the tape completely covers the at least all seams, and the tape has the property of shrinking in a particular direction when heated.

Based on the above concept, the raw material of the adhesive tape is mainly selected from the group consisting of elastic ethylene terephthalate, stretchable polypropylene, stretchable polystyrene, and stretchable polyester resin. One. Further, the shape of the slit is preferably selected from one of a V shape, a - shape, a × shape, a Δ shape, a ○ shape, a □ shape, a ◇ shape, and a ☆ shape, but is not limited to the above shape.

Based on the above concept, preferably the common adhesive region is formed by an adhesive, which The weakly viscous region is formed by the adhesive and the weakening agent, wherein the weakening agent reduces the viscosity of the adhesive; or the adhesive thickness of the common adhesive region is greater than the adhesive thickness of the weakly viscous region; or In the adhesive of the ordinary adhesive region, the density of the viscous material is greater than the density of the viscous material in the adhesive of the weakly viscous region.

According to the purpose of the present invention, the present invention further provides an exhaust structure having a heat shrinkable tape, comprising a venting portion having at least all seams; and a tape adhered to one side of the venting portion such that the tape completely covers the squeegee At least all the seams, wherein the adhesive tape has heat shrinkage characteristics, and a part of the adhesive surface of the adhesive tape is a common adhesive region, and another adhesive surface of the adhesive tape is a weak adhesive region, and the adhesiveness of the common adhesive region is greater than the weak Viscosity of the viscous area. Preferably, the weakly viscous region of the tape completely covers the at least all seams, and the tape has the property of shrinking in a particular direction when heated.

According to the above description, the heat shrinkable tape and the film of the exhaust zone and the exhaust structure of the present invention can maintain the airtightness inside the packaging container before heating, and automatically expose the exhaust zone for exhausting when heated. Air pressure adjustment without external force intervention. In this way, the internal contents of the packaging container can be kept hygienic, and the packaging container can be quickly and conveniently heated without additional work without worrying about the deformation or explosion of the container caused by excessive air pressure inside the container.

1‧‧ ‧ film

11‧‧‧ slitting

2‧‧‧ Tape

21‧‧‧ Weakly viscous area

22‧‧‧Ordinary sticky area

3‧‧‧ sealed box

31‧‧‧Package box body

4‧‧‧ sealed bags

41‧‧‧Package bag body

The first picture is a schematic view of the appearance of the film before heating.

The second picture is a schematic view of the appearance of the film after heating.

The third figure is a schematic view of the appearance of the tape of the present invention before being applied to the slit.

The fourth picture is a schematic diagram of the appearance of the original adhesive film applied to the sealed package before heating.

The fifth figure is a schematic diagram of the appearance of the created adhesive film applied to the sealed package.

The sixth figure is a schematic diagram of the appearance of the heat shrinkable tape applied to the sealed package before heating.

Specific examples are given below to explain the contents of the present invention in detail, and the drawings are used as an auxiliary explanation. The symbols mentioned in the description refer to the schema symbols. It is worth noting that the "include" mentioned in the description is an open term and should be interpreted as "including, but not limited to". In addition, those of ordinary skill in the art should understand that the same component/product often has a different designation, such as "tape" or "adhesive tape", and thus is similar to the functionally similar components mentioned in this specification. Products are of course included in the scope of this specification.

Please refer to the first figure. The first figure is an embodiment of the exhaust structure of the heat shrinkable tape, which is presented by a film with heat shrinkable tape. The first figure shows the appearance of the film before heating. . As shown in the first figure, the adhesive film of the heat shrinkable tape comprises a film 1 and a tape 2, wherein the film 1 has at least all the seams 11, and the tape 2 is adhered to one side of the film 1 so that the tape 2 is completely covered. Sew 11. In this state, since the slit 11 is completely attached by the tape 2, the both sides of the film 1 cannot pass through the film 1 to circulate air. In other words, if the film 1 in which the slit 11 is completely attached by the tape 2 is applied to a package or container, the package or container will be in an airtight state. In addition, it must be noted that although the slit 11 in the first figure assumes a shape, the shape of the slit 11 may also be a V shape, a - shape, or an X shape according to different application situations and actual needs. Shape), △ shape (triangle), □ shape (rectangular), ◇ shape (diamond), ☆ shape (star), even irregular shape, etc., ○ shape here is only an example of the embodiment and is not limited Here, I will explain it first.

The tape 2 used in the present invention has a heat shrinkage property, and particularly has a property of shrinking in a specific direction when heated. In another embodiment, the degree of shrinkage of the tape 2 in a particular direction after exposure to heat is greater than the extent of shrinkage in other directions. Preferably, the raw material of the tape 2 is mainly selected from the group consisting of a flexible ethylene terephthalate, a stretchable polypropylene, a stretchable polystyrene, and a stretchable polyester resin. .

One of the adhesive faces of the adhesive tape 2 is a weakly adhesive region 21, and the other adhesive face of the adhesive tape 2 is a common adhesive region 22, and the adhesiveness of the ordinary adhesive region 22 is greater than that of the weakly adhesive region 21. There are many different methods for forming the weakly viscous region 21 and the common viscous region 22. In one embodiment, the common viscous region 22 is formed by an adhesive, and the weakly viscous region 21 is formed by the aforementioned adhesive. In addition to the weakening agent, the aforementioned weakening agent is used to reduce the viscosity of the aforementioned adhesive. That is, the weakening agent is applied to a part of the surface of the adhesive, and the effect is achieved by controlling the application area. In addition, the adhesive tape 2 can be uniformly used in the production of the same adhesive, and the weakening agent is added only at the place where the weakly viscous region 21 is to be formed to lower the viscosity.

In another embodiment, the thickness of the adhesive in the general adhesive region 22 is greater than the thickness of the adhesive in the weakly adhesive region 21, and the difference in the thickness of the adhesive causes a difference in viscosity.

In another embodiment, different adhesives are used to make the common adhesive region 22 and the weak adhesive region 21, respectively, and the common adhesive region 22 and the weakly adhesive region are distinguished by the difference in viscosity between different adhesives. twenty one. That is to say, in the adhesive of the ordinary adhesive region 22, the density of the viscous material is greater than the density of the viscous material in the adhesive of the weakly viscous region 21. Preferably, the weakly viscous region 21 of the tape 2 completely covers the slit 11.

Please continue to refer to the second figure, the second picture is a schematic view of the appearance of the film 1 after heating. When the film 1 with the adhesive tape 2 is heated, since the tape 2 has heat Since the tape 2 is slowly shrunk and becomes small, and because the weakly viscous region 21 in the tape 2 is weakly adhered, it is easy to shrink and leave the surface of the adhered film 1 by the heat shrinking force, thereby achieving The purpose of exposing the slit 11 is to allow air on both sides of the film 1 to flow through the slit 11 for air flow. In addition, since the ordinary viscous region 22 is highly viscous, it can resist the heat shrinking force without falling off the surface of the adhered film 1. In other words, after the above-described heat shrinking process, the slit 11 in the film 1 of the present invention is automatically exposed due to the heat shrinkage of the weakly viscous region 21 in the tape 2, but the ordinary viscous region of the tape 2 22 is still adhered to the film 1, so the tape 2 does not fall off entirely due to heat shrinkage, achieving full-automatic heating and exhausting, while taking care of the benefits of hygiene without making garbage.

The tape 2 will be described in detail below. Please refer to the third figure. The third picture is a schematic view of the appearance of the tape before the heating is applied to the slit. As shown in the third figure, the tape 2 is adhered to the slit 11 before heating, so that the slit 11 is completely covered by the tape 2. The adhesive tape 2 has a weakly viscous area 21 and a common viscous area 22, and the weakly viscous area 21 is used for heat shrinkage to achieve an exhausting effect, and the ordinary viscous area 22 is used to prevent the tape 2 from falling off, wherein the adhesive layer 2 is preferably weakly viscous. The sexual area 21 completely covers the slit 11 above. The tape 2 has the characteristic of shrinking in a specific direction after being heated, so that when the tape 2 starts to heat, the tape 2 starts to shrink in a specific direction, and then the weakly viscous region 21 cannot withstand the heat shrinking force because of its low viscosity, so it shrinks. And leaving the surface of the adhered film 1 so that the slit 11 is exposed and is no longer completely covered by the tape 2, thereby achieving the effect of ventilation and exhaust. The preferred direction of heat shrinkage is parallel to the direction of separation of the weakly viscous region 21 of the tape 2 from the normal viscous region 22, as indicated by the arrows in the third figure. In another embodiment, the heat shrinkage direction is parallel to the length direction of the tape 2 when it is produced.

The film with heat shrinkable tape is suitable for various sealed packaging and dense In the case of a sealed bag or the like, good sealing characteristics can be provided, and the vent hole is automatically exposed to perform air pressure adjustment upon heating. Please refer to the fourth figure. The fourth figure is a schematic diagram of the appearance of the glue film 1 applied to the sealed package before heating. As shown in the fourth figure, the film 1 having the slit 11 is placed on the outside of the package body 31, so that the film 1 completely covers the exposed surface, wherein the slit 11 is provided with a weakly viscous area 21 and a common stick. The tape 2 of the sexual region 22 is covered to form a sealed package 3. Further, it is preferable to completely cover the slit 11 using the weakly viscous region 21. The sealed package 3 in this state is in an airtight state, and the inside is suitable for a device such as food that needs to be kept fresh and kept hygienic.

Please refer to the fifth figure. The fifth figure is a schematic diagram of the appearance of the created adhesive film 1 after it is applied to the sealed package. When the consumer purchases the sealed package 3 containing the food, the sealed package 3 can be conveniently placed in the microwave for heating without any action of opening the vent. When the sealed package 3 is heated in the microwave oven, the tape 2 starts to shrink in a specific direction, and then the weakly viscous region 21 cannot withstand the heat shrinking force because of its low viscosity, so that it shrinks and leaves the surface of the adhered film 1 The slit 11 is exposed and is no longer completely covered by the tape 2, so that the air pressure which is expanded by the inside of the sealed package 3 can be discharged to the outside without being deformed or exploded.

It should be noted that although the appearance of the film 1 shown in the above embodiment is elliptical, it should be apparent to those skilled in the art that the film 1 is outside the spirit and scope of the present invention. The type can be any other shape of film, such as a rectangle, a polygon, and the like. The shape and position of the slit 11 and the direction in which the tape 2 is adhered may also be changed according to requirements. The first drawing is merely an example of the embodiment and is not limited thereto, and is described herein first.

In addition, the heat shrinkable tape of this creation can also be applied to a sealed package. Please refer to the sixth figure. The sixth figure is a schematic diagram of the appearance of the heat shrinkable tape applied to the sealed package before heating. As shown in the sixth figure, a slit 11 is reserved on the package body 41 as a heated vent hole. The slit 11 is completely covered with the tape 2 having the weakly viscous region 21 and the normal viscous region 22, wherein the slit 11 is preferably completely covered with the weakly viscous region 21, so that the sealed package 4 is airtight. . Similarly, after the sealed packaging bag 4 is heated, the weakly viscous area 21 of the adhesive tape 2 begins to heat shrink and breaks off the surface of the sealed packaging bag 4, so that the outside air inside the sealed packaging bag 4 can be circulated while adjusting the air pressure, principle and effect. Ibiding to do so here.

It is worth mentioning that the heat shrinkable tape of the present invention can also be applied to a non-food container or a non-film object, as long as the object has a surface to be exhausted (or called a venting portion), The surface is provided with a slit, and the slit is completely covered by the heat shrinkable tape of the present invention with a weakly viscous area and a common viscous area, so that the weakly viscous area of the heat shrinkable tape is sticky due to the temperature rise. The lower the ability to resist the contraction force, so it shrinks and leaves the surface of the adhered object, so that the slit is exposed to be vented and the air pressure is adjusted. In other words, the heat shrinkable tape of the present invention can be applied to the surface of any object having a slit to form a hot exhaust structure.

In summary, the venting structure of the heat shrinkable tape can maintain the airtightness inside the packaging container, and automatically exposes the slit for exhaust and air pressure adjustment only when heated. Since the whole process does not require external force intervention, the packaging container can be heated quickly and conveniently, and the overall sanitation is ensured. Further, since the heat-shrinkable tape is not completely peeled off after heating, there is no problem such as garbage.

The above is intended to be illustrative only and not limiting. Any equivalent modifications or alterations to the spirit and scope of this creation shall be included in the scope of the appended patent application.

1‧‧ ‧ film

11‧‧‧ slitting

2‧‧‧ Tape

21‧‧‧ Weakly viscous area

22‧‧‧Ordinary sticky area

3‧‧‧ sealed box

31‧‧‧Package box body

Claims (14)

A film with heat shrinkable tape, comprising: a film having at least all seams; and a tape adhered to a portion of the film such that the tape completely covers the at least all seams, wherein the tape has heat shrinkage characteristics And a part of the adhesive surface of the adhesive tape is a common adhesive region, and another adhesive surface of the adhesive tape is a weak adhesive region, and the adhesiveness of the common adhesive region is greater than the viscosity of the weak adhesive region, and the weak adhesive region Cover the at least all seams. The film according to claim 1, wherein the tape has a property of shrinking in a specific direction when heated. According to the film of claim 1, wherein the raw material of the tape is mainly selected from the group consisting of elastic ethylene terephthalate, stretchable polypropylene, stretchable polystyrene, and stretchable. One of polyester resins. The film according to claim 1, wherein the ordinary viscous region is formed by an adhesive, and the weakly viscous region is formed by the adhesive and the weakening agent, wherein the weakening agent lowers the viscosity of the adhesive. The film according to claim 1, wherein the thickness of the adhesive in the ordinary adhesive region is greater than the thickness of the adhesive in the weakly adhesive region. According to the film of the first aspect of the patent application, in the adhesive of the ordinary adhesive region, the density of the viscous material is greater than the density of the viscous material in the adhesive of the weakly viscous region. The film according to claim 1, wherein the shape of the slit is one selected from the group consisting of a V shape, a - shape, a × shape, a Δ shape, a ○ shape, a □ shape, a ◇ shape, and a ☆ shape. An exhaust structure having a heat shrinkable tape, comprising: a venting portion having at least all seams; and a tape adhered to a portion of the venting portion such that the tape completely covers the at least all seams, wherein the tape has a seam The heat shrinkage property, and a part of the adhesive surface of the tape is a common adhesive region, and another adhesive surface of the adhesive tape is a weakly adhesive region, and the viscosity of the common adhesive region is greater than the viscosity of the weakly adhesive region, which is weak. The viscous area covers the at least all seams. The exhaust structure according to item 8 of the patent application, wherein the tape has a characteristic of shrinking in a specific direction when heated. According to the exhaust structure of claim 8, wherein the raw material of the tape is mainly selected from the group consisting of elastic ethylene terephthalate, stretchable polypropylene, stretchable polystyrene, and stretchability. One of the polyester resins. According to the exhaust structure of claim 8, wherein the ordinary adhesive region is formed by an adhesive, and the weak adhesive region is formed by the adhesive and the weakening agent, wherein the weakening agent reduces the viscosity of the adhesive. . The venting structure according to claim 8 wherein the thickness of the adhesive in the common viscous region is greater than the thickness of the adhesive in the weak viscous region. According to the venting structure of the eighth aspect of the patent application, in the adhesive of the ordinary viscous region, the density of the viscous material is greater than the density of the viscous material in the adhesive of the weak viscous region. The exhaust structure according to item 8 of the patent application, wherein the shape of the slit is selected from a V shape, a - shape, a × shape, a △ shape, a ○ shape, a □ shape, a ◇ shape, and a ☆ shape one of them.