CN219970596U - Sealing gasket with middle part being heat-sealed - Google Patents
Sealing gasket with middle part being heat-sealed Download PDFInfo
- Publication number
- CN219970596U CN219970596U CN202321362473.7U CN202321362473U CN219970596U CN 219970596 U CN219970596 U CN 219970596U CN 202321362473 U CN202321362473 U CN 202321362473U CN 219970596 U CN219970596 U CN 219970596U
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- layer
- heat
- sealing
- sealing layer
- film
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- 238000007789 sealing Methods 0.000 title claims abstract description 97
- 239000010410 layer Substances 0.000 claims abstract description 174
- 239000012793 heat-sealing layer Substances 0.000 claims abstract description 31
- 238000005187 foaming Methods 0.000 claims abstract description 27
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 11
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 11
- 239000011888 foil Substances 0.000 claims abstract description 7
- 239000003292 glue Substances 0.000 claims description 5
- 239000005030 aluminium foil Substances 0.000 claims description 4
- 239000002131 composite material Substances 0.000 claims description 4
- 150000001875 compounds Chemical class 0.000 claims description 2
- 210000002489 tectorial membrane Anatomy 0.000 claims description 2
- 238000010030 laminating Methods 0.000 abstract description 3
- 239000010408 film Substances 0.000 description 54
- 239000000463 material Substances 0.000 description 8
- 239000006260 foam Substances 0.000 description 5
- 239000000123 paper Substances 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 2
- 238000013329 compounding Methods 0.000 description 2
- 210000003128 head Anatomy 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- -1 for example Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000008267 milk Substances 0.000 description 1
- 210000004080 milk Anatomy 0.000 description 1
- 235000013336 milk Nutrition 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 239000011087 paperboard Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
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- Laminated Bodies (AREA)
Abstract
The utility model discloses a sealing gasket with a middle part heat-sealed, which comprises an upper sealing layer and a lower sealing layer, wherein the upper sealing layer comprises a double-sided laminating foaming layer, and the lower sealing layer comprises an aluminum foil layer and a sealing layer compounded on the lower surface of the aluminum foil layer, and is characterized in that: the sealing gasket also comprises a heat sealing layer, and the middle parts of the upper sealing layer and the lower sealing layer are heat-sealed together through the heat sealing layer. When the sealing gasket is torn, all the positions of the edge of the upper sealing layer can be used as the handle parts, so that the sealing gasket is convenient to pull up by hand, and the handle parts are not required to be additionally arranged.
Description
Technical Field
The utility model relates to a sealing gasket, in particular to a sealing gasket with a middle part for heat sealing.
Background
After the medicine bottles, the oil bottles, the milk powder cans and the like are filled, sealing layers (such as aluminum layers, paperboards, films and the like) are generally needed to be adopted at the bottle mouth/filling opening, the filling containers comprise plastic containers, paper containers or aluminum containers and the like, the upper ends of the containers are provided with openings, sealing edges are arranged at the opening edges, and the sealing edges can be used for sealing and storing the packaging containers in a sealing way by heat sealing of a sealing gasket layer.
Most current closure gaskets typically include an upper seal layer that adheres to the container closure rim and a lower seal layer that generally performs a resealing function.
In order to tear conveniently, a handle part is usually required to be arranged on the upper sealing layer, the processing step is increased, the production cost is increased, a hollowed-out part is required to be additionally arranged in the peripheral area of the handle part, the position, corresponding to the hollowed-out part, on the lower sealing layer is required to be exposed, in addition, in general, the handle part is directly combined with the lower sealing layer, and when the handle part is required to be torn, the handle part is difficult to break off.
Disclosure of Invention
The utility model aims to solve the technical problem of providing a sealing gasket with a middle part for heat sealing, wherein when the sealing gasket is torn, all positions of the edge of an upper sealing layer can be used as lifting parts, so that the sealing gasket is convenient to lift by hand, and no lifting parts are needed to be additionally arranged.
In order to solve the technical problems, the technical scheme adopted is as follows:
the utility model provides a sealing gasket of middle local heat-seal, includes sealing layer and lower sealing layer, and the last sealing layer includes double-sided tectorial membrane foaming layer, and lower sealing layer includes aluminium foil layer and compound at the sealing layer of aluminium foil layer lower surface, its characterized in that: the sealing gasket also comprises a heat sealing layer, and the middle parts of the upper sealing layer and the lower sealing layer are heat-sealed together through the heat sealing layer.
The intermediate portion generally mates with the opening of the bottle.
The sealing gasket is generally applied to plastic containers, paper containers or aluminum containers, wherein the upper ends of the containers are provided with openings, the edges of the openings are provided with sealing edges, and the sealing layer of the lower sealing layer of the sealing gasket is adhered to the sealing edges, so that the sealing gasket seals the openings of the containers. The lower sealing layer plays roles of completely sealing and blocking light; because the heat seal layer only carries out the heat seal with the middle part of last sealing layer and lower sealing layer, and go up sealing layer and lower sealing layer and do not have the heat seal to form the clearance between the border of going up the sealing layer and the border of lower sealing layer, when needs are torn sealing gasket, each position on going up the sealing layer border homoenergetic is as carrying the hand portion, makes things convenient for portable pulling up, together tears splitting with the lower sealing layer of below, need not to set up in addition and carries the hand portion. The local heat seal is carried out by adopting a heat seal die, the die head of the heat seal die is designed to be the same as the heat seal area, and the die assembly is completed.
In a preferred scheme, the heat sealing layer comprises a first heat sealing layer compounded on the lower surface of the double-sided laminating foaming layer and a second heat sealing layer compounded on the upper surface of the aluminum foil layer. The first heat seal layer and the second heat seal layer are made of the same-property film layer, for example, PE or PP film layers can be adopted, the specific material of the film layers depends on the material of the lower surface film layer of the double-sided composite film foaming layer, if the material of the lower surface film layer of the double-sided composite film foaming layer is PP, the first heat seal layer and the second heat seal layer are made of the PP film layer, and if the material of the lower surface film layer of the double-sided composite film foaming layer is PE, the first heat seal layer and the second heat seal layer are made of the PE film layer, in a word, the principle of the same-property heat seal is followed.
In a further preferred embodiment, the double-sided laminated foam layer includes a foam layer, and a first film layer and a second film layer laminated on both sides of the foam layer. If the first film layer and the second film layer are directly compounded on two sides of the foaming layer, the first film layer and the second film layer are made of the same material as the foaming layer, and if the first film layer and the second film layer are compounded on two sides of the foaming layer through glue, the first film layer and the second film layer can be made of different materials from the foaming layer.
In a further preferred embodiment, the first film layer and the second film layer are heat sealed directly to both sides of the foam layer. For example, the foaming layer is a PE foaming layer, the first film layer and the second film layer are PE films, and the first heat sealing layer and the second heat sealing layer should be PE films.
In another further preferred embodiment, the first film layer and the second film layer are respectively glued to both sides of the foam layer. The material of the first film layer and the second film layer can be different from that of the foaming layer by adopting glue for compounding, and under the condition, the selection range of the first film layer, the second film layer, the first heat sealing layer and the second heat sealing layer is wider.
In a further preferred embodiment, the first film layer and the second film layer are both PET. The first film layer is usually used as a printing film layer, and PET has good transparency, gloss, good stiffness and stable size, and is suitable for secondary processing such as printing when being used as a printing film.
In a further preferred scheme, the first heat sealing layer and the second heat sealing layer are both provided with dense pinholes. By arranging the dense pinholes on the first heat sealing layer and the second heat sealing layer, the integrity of the first heat sealing layer and the second heat sealing layer is destroyed, so that the outline of the heat sealing part between the upper sealing layer and the lower sealing layer is easier to tear.
The utility model has the beneficial effects that: when the sealing gasket is torn, all the positions of the edge of the upper sealing layer can be used as the handle parts, so that the sealing gasket is convenient to pull up by hand, and the handle parts are not required to be additionally arranged.
Drawings
FIG. 1 is a schematic structural view of a sealing gasket in embodiment 1 of the present utility model;
FIG. 2 is a cross-sectional view taken along the direction A of FIG. 1;
fig. 3 is an enlarged view of the sealing gasket (with the upper and lower sealing layers separated) in example 1 of the present utility model (pinholes not shown).
Detailed Description
The utility model is further described with reference to the drawings and the specific embodiments below:
example 1
The sealing gasket with the middle part heat-sealed as shown in fig. 1-3 comprises an upper sealing layer 1, a heat-sealing layer 2 and a lower sealing layer 3, wherein the upper sealing layer 1 comprises a double-sided laminating foaming layer, the lower sealing layer 3 comprises an aluminum foil layer 301 and a sealing layer 302 compounded on the lower surface of the aluminum foil layer 301, and the middle parts of the upper sealing layer 1 and the lower sealing layer 3 are heat-sealed together through the heat-sealing layer 2.
The intermediate portion generally mates with the opening of the bottle.
The sealing gasket is generally applied to plastic containers, paper containers or aluminum containers, the upper ends of the containers are provided with openings, sealing edges are arranged at the opening edges, and the sealing layer 302 of the lower sealing layer 3 of the sealing gasket is adhered to the sealing edges, so that the sealing gasket seals the openings of the containers. The lower sealing layer 3 plays a role of completely sealing and blocking light; because the heat seal layer 2 only carries out the heat seal with the middle part of upper seal layer 1 and lower seal layer 3, and upper seal layer 1 and lower seal layer 3 do not heat seal to form the clearance between the border of upper seal layer 1 and the border of lower seal layer 3, when need tearing the gasket that seals, each position on upper seal layer 1 border can both be regarded as the handle portion, makes things convenient for the portable to pull up, tears splitting together with lower seal layer 3 of below, need not to set up in addition and holds the hand. The local heat seal is carried out by adopting a heat seal die, the die head of the heat seal die is designed to be the same as the heat seal area, and the die assembly is completed.
The heat sealing layer 2 includes a first heat sealing layer 201 laminated on the lower surface of the double-sided laminated foaming layer and a second heat sealing layer 202 laminated on the upper surface of the aluminum foil layer 301.
The double-sided laminated foaming layer comprises a foaming layer 102, and a first film layer 101 and a second film layer 103 which are compounded on two sides of the foaming layer 102; the first film layer 101 and the second film layer 103 are directly heat-sealed to both sides of the foamed layer 102.
The first and second heat seal layers 201 and 202 are each provided with dense pinholes 2012. By providing the first and second heat-seal layers 201 and 202 with dense pinholes 2012, the integrity of the first and second heat-seal layers 201 and 202 is broken, so that the outline of the heat-seal portions of the upper and lower seal layers 1 and 3 is more easily torn.
The first film layer 101 and the second film layer 103 are both PET. The first film layer 101 is usually used as a printing film layer, and PET has good transparency, gloss, good stiffness, and stable size, and is suitable for secondary processing such as printing when used as a printing film.
Example 2
This embodiment differs from embodiment 1 in that: the first film layer and the second film layer are respectively matched with the two sides of the foaming layer through glue. The material of the first film layer and the second film layer can be different from that of the foaming layer by adopting glue for compounding, and under the condition, the selection range of the first film layer, the second film layer, the first heat sealing layer and the second heat sealing layer is wider.
Claims (7)
1. The utility model provides a sealing gasket of middle local heat-seal, includes sealing layer and lower sealing layer, and the last sealing layer includes double-sided tectorial membrane foaming layer, and lower sealing layer includes aluminium foil layer and compound at the sealing layer of aluminium foil layer lower surface, its characterized in that: the sealing gasket also comprises a heat sealing layer, and the middle parts of the upper sealing layer and the lower sealing layer are heat-sealed together through the heat sealing layer.
2. An intermediate partially heat sealed closure gasket according to claim 1, wherein: the heat sealing layer comprises a first heat sealing layer compounded on the lower surface of the double-sided composite film foaming layer and a second heat sealing layer compounded on the upper surface of the aluminum foil layer.
3. An intermediate partially heat sealed closure gasket according to claim 2, wherein: the double-sided laminated foaming layer comprises a foaming layer, and a first film layer and a second film layer which are compounded on two sides of the foaming layer.
4. A sealing gasket for an intermediate partial heat seal as set forth in claim 3 wherein: the first film layer and the second film layer are directly heat-sealed on two sides of the foaming layer.
5. A sealing gasket for an intermediate partial heat seal as set forth in claim 3 wherein: the first film layer and the second film layer are respectively matched with the two sides of the foaming layer through glue.
6. A sealing gasket for an intermediate partial heat seal as set forth in claim 3 wherein: PET is adopted for the first film layer and the second film layer.
7. An intermediate partially heat sealed closure gasket according to claim 2, wherein: the first heat sealing layer and the second heat sealing layer are both provided with dense pinholes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321362473.7U CN219970596U (en) | 2023-05-31 | 2023-05-31 | Sealing gasket with middle part being heat-sealed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321362473.7U CN219970596U (en) | 2023-05-31 | 2023-05-31 | Sealing gasket with middle part being heat-sealed |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219970596U true CN219970596U (en) | 2023-11-07 |
Family
ID=88598453
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321362473.7U Active CN219970596U (en) | 2023-05-31 | 2023-05-31 | Sealing gasket with middle part being heat-sealed |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219970596U (en) |
-
2023
- 2023-05-31 CN CN202321362473.7U patent/CN219970596U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |