CN116714257A - Manufacturing process of sealing gasket - Google Patents
Manufacturing process of sealing gasket Download PDFInfo
- Publication number
- CN116714257A CN116714257A CN202310633892.8A CN202310633892A CN116714257A CN 116714257 A CN116714257 A CN 116714257A CN 202310633892 A CN202310633892 A CN 202310633892A CN 116714257 A CN116714257 A CN 116714257A
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- CN
- China
- Prior art keywords
- layer
- sealing
- heat
- sealing layer
- film
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000007789 sealing Methods 0.000 title claims abstract description 231
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 29
- 239000010410 layer Substances 0.000 claims abstract description 261
- 239000012793 heat-sealing layer Substances 0.000 claims abstract description 51
- 238000005187 foaming Methods 0.000 claims abstract description 28
- 239000000463 material Substances 0.000 claims abstract description 19
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 14
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 14
- 239000011888 foil Substances 0.000 claims abstract description 12
- 238000013329 compounding Methods 0.000 claims abstract description 9
- 239000002131 composite material Substances 0.000 claims abstract description 5
- 238000005520 cutting process Methods 0.000 claims description 27
- 238000000034 method Methods 0.000 claims description 8
- 239000003292 glue Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 8
- 241001411320 Eriogonum inflatum Species 0.000 description 12
- 235000011194 food seasoning agent Nutrition 0.000 description 12
- 239000004278 EU approved seasoning Substances 0.000 description 4
- 241001391944 Commicarpus scandens Species 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 239000010408 film Substances 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
- 239000000123 paper Substances 0.000 description 1
- 239000011087 paperboard Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Abstract
The invention discloses a manufacturing process of a sealing gasket, which is characterized by comprising the following steps of: step (1), respectively compounding a first film layer and a second film layer on the upper surface and the lower surface of the foaming layer to form a double-sided laminated foaming layer; step (2), a first heat sealing layer with the same material is heat-sealed on the lower surface of the second film layer, and the double-sided composite film foaming layer and the first heat sealing layer jointly form an upper sealing layer; step (3), compounding a sealing layer on the lower surface of the aluminum foil layer, compounding a second heat sealing layer which is the same as the first heat sealing layer in material on the upper surface of the aluminum foil layer, and forming a lower sealing layer together by the sealing layer, the aluminum foil layer and the second heat sealing layer; and (4) heat-sealing the first heat-sealing layer of the upper sealing layer and the second heat-sealing layer of the lower sealing layer to form the sealing gasket. The sealing gasket manufactured by the manufacturing process has good sealing effect, the upper sealing layer and the lower sealing layer have good bonding effect when in heat sealing, cannot be easily separated, and are easier to tear when in use.
Description
Technical Field
The invention relates to a sealing gasket, in particular to a manufacturing process of the sealing gasket.
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 sealing gaskets currently comprise an upper sealing layer and a lower sealing layer, wherein the upper sealing layer and the lower sealing layer are in heat sealing, the lower sealing layer is adhered to the sealing edge of a container, the upper sealing layer plays a role in protecting the lower sealing layer, and when the sealing gasket is used, the lower sealing layer is torn together through the upper sealing layer. In order to avoid that the upper sealing layer is difficult to tear and is easy to tear due to too firm combination between the upper sealing layer and the lower sealing layer, the thickness of the upper sealing layer is generally required to be thickened, and the adhesive effect between the upper sealing layer and the lower sealing layer is reduced, however, in this way, the situation that the upper sealing layer is separated independently when being torn and the lower sealing layer cannot be driven to be torn together easily occurs.
Disclosure of Invention
The invention aims to solve the technical problem of providing a manufacturing process of a sealing gasket, which has good sealing effect, and the upper sealing layer and the lower sealing layer of the sealing gasket manufactured by the manufacturing process have good bonding effect when in heat sealing, cannot be easily separated, and are easier to tear when in use.
In order to solve the technical problems, the technical scheme adopted is as follows:
the manufacturing process of the sealing gasket is characterized by comprising the following steps of:
step (1), respectively compounding a first film layer and a second film layer on the upper surface and the lower surface of the foaming layer to form a double-sided laminated foaming layer;
step (2), a first heat sealing layer with the same material is heat-sealed on the lower surface of the second film layer, and the double-sided composite film foaming layer and the first heat sealing layer jointly form an upper sealing layer;
step (3), compounding a sealing layer on the lower surface of the aluminum foil layer, compounding a second heat sealing layer which is the same as the first heat sealing layer in material on the upper surface of the aluminum foil layer, and forming a lower sealing layer together by the sealing layer, the aluminum foil layer and the second heat sealing layer;
and (4) heat-sealing the first heat-sealing layer of the upper sealing layer and the second heat-sealing layer of the lower sealing layer to form the sealing gasket.
In the manufacturing process of the sealing gasket, the upper sealing layer and the lower sealing layer are manufactured respectively, and the lowest layer of the upper sealing layer and the uppermost layer of the lower sealing layer are provided with heat sealing layers for heat sealing, so that the upper sealing layer can be heat-sealed with the lower sealing layer according to the area requirement; because the second film layer, the first heat seal layer and the second heat seal layer are the same in material, the sealing gasket has better bonding effect when in heat seal under the condition of keeping the thickness thinner, the specific material of the second film layer, the first heat seal layer and the second heat seal layer depends on the material of the second film layer, if the material of the second film layer is PP, the first heat seal layer and the second heat seal layer are both made of PP film layers, and if the material of the second film layer is PE, the first heat seal layer and the second heat seal layer are both made of PE film layers.
In a preferred embodiment, the step (3) further includes disposing dense pinholes on the first heat seal layer and the second heat seal layer, respectively. Through set up intensive pinhole on first heat seal layer, second heat seal layer, destroy the wholeness of first heat seal layer, second heat seal layer for the profile at heat seal position is more easy to tear at last sealing layer and lower sealing layer, and it is more convenient to tear when using, can not appear going up sealing layer part fracture and the condition that lower sealing layer was not torn.
In a preferred embodiment, the heat sealing of the first heat sealing layer of the upper sealing layer and the second heat sealing layer of the lower sealing layer in the step (4) is performed in the following manner: and (3) heat-sealing the middle parts of the upper sealing layer and the lower sealing layer together, wherein the rest areas are not heat-sealed. 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 the border of sealing layer and lower sealing layer and do not 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 upper sealing layer border homoenergetic is as carrying the hand portion, makes things convenient for portable pull up, together tears splitting with the lower sealing layer of below, need not to set up in addition and carries the hand portion.
In another preferred embodiment, in the step (4), a handle portion, an annular cutting line and a strip cutting line are further disposed at a middle position of the upper sealing layer, the handle portion is located in an area surrounded by the annular cutting line, and the annular cutting line and the handle portion are connected through the strip cutting line.
In a further preferred embodiment, the heat sealing of the first heat sealing layer of the upper sealing layer and the second heat sealing layer of the lower sealing layer in the step (4) is performed in the following manner: and (3) heat-sealing the rest areas of the upper sealing layer and the lower sealing layer except the corresponding areas of the handle parts. Because the handle part is not attached to the lower sealing layer, the handle part can be easily uncovered and is not easy to break, and when the handle part is pulled upwards, the handle part tears the lower sealing layer along the strip-shaped tearing line and the annular cutting line.
In another further preferred embodiment, in the step (4), a plurality of through holes are further provided at the middle position of the lower sealing layer; the first heat sealing layer of the upper sealing layer and the second heat sealing layer of the lower sealing layer are subjected to heat sealing in the following manner: and (3) heat-sealing the region, which is outside the region enclosed by the annular cutting line, of the upper sealing layer and the region corresponding to the lower sealing layer together, wherein the rest regions are not adhered. When the lower sealing layer is torn, the upper sealing layer is only in heat sealing with the peripheral edge of the lower sealing layer, the whole area surrounded by the annular cutting line of the upper sealing layer can be torn through the handle part, the lower sealing layer is not damaged at the moment, and all through holes can be exposed. In general, a bottle stopper and a bottle cap are arranged at the bottle mouth of the existing seasoning bottle, the bottle stopper is plugged at the bottle mouth, a plurality of through holes for spraying seasonings are formed in the bottle stopper, and the bottle cap covers the bottle stopper after the seasonings are used; the prior bottle stopper is generally made of plastic. The sealing gasket can replace the bottle stopper of the seasoning bottle, so that the cost is effectively reduced, and the edge area of the upper sealing layer is still in heat sealing with the lower sealing layer, so that the sealing gasket is not influenced by tearing in the middle area, and the sealing gasket can also play a good resealing role on the seasoning bottle after the bottle cap is covered after the seasoning is used.
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 embodiment, in the step (1), under the condition that the materials of the first film layer and the second film layer are the same as those of the foaming layer, the manner adopted by the first film layer and the second film layer to be compounded on the upper surface and the lower surface of the foaming layer is as follows: the first film layer and the second film layer are directly heat-sealed on two sides of the foaming 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 preferred embodiment, in the step (1), when the materials of the first film layer and the second film layer are not the same as those of the foaming layer, the manner adopted by the first film layer and the second film layer to be combined on the upper surface and the lower surface of the foaming layer is as follows: the first film layer and the second film layer are respectively compounded on two sides of the foaming layer through glue. In this case, the first film layer, the second film layer, the first heat seal layer, and the second heat seal layer are selected in a wider range.
The invention has the beneficial effects that: the sealing gasket manufactured by the manufacturing process has good sealing effect, the thickness of the upper sealing layer is thinner, the bonding effect between the upper sealing layer and the lower sealing layer is good when in heat sealing, the sealing gasket cannot be easily separated, and the sealing gasket is easier to tear when in use.
Drawings
FIG. 1 is a schematic structural view of a sealing gasket manufactured by the manufacturing process of the present invention in example 1;
FIG. 2 is a cross-sectional view taken along the direction A of FIG. 1;
FIG. 3 is an enlarged view (pinholes not shown) of the sealing gasket (upper and lower sealing layers separated) of example 1 manufactured by the manufacturing process of the present invention;
FIG. 4 is a schematic structural view of a sealing gasket manufactured by the manufacturing process of the present invention in example 2;
FIG. 5 is a cross-sectional view of FIG. 4 taken along the direction B;
FIG. 6 is an enlarged view (pinholes not shown) of the sealing gasket (upper and lower sealing layers separated) of example 2 using the manufacturing process of the present invention;
FIG. 7 is a schematic structural view of a sealing gasket manufactured by the manufacturing process of the present invention in example 3;
fig. 8 is a cross-sectional view of fig. 7 along direction C;
fig. 9 is an enlarged view (pinholes not shown) of the sealing gasket (upper and lower sealing layers separated) of example 3 manufactured by the manufacturing process of the present invention.
Detailed Description
The invention is further described with reference to the accompanying drawings and specific embodiments:
example 1
A process for manufacturing a sealing gasket as shown in fig. 1-3, comprising the steps of:
step (1), directly heat-sealing a first film layer 101 and a second film layer 103 on the upper surface and the lower surface of a foaming layer 102 respectively to form a double-sided composite film foaming layer;
step (2), a first heat sealing layer 104 with the same material is heat-sealed on the lower surface of the second film layer 103, and the double-sided composite film foaming layer and the first heat sealing layer 104 jointly form an upper sealing layer 1;
step (3), a sealing layer 203 is compounded on the lower surface of the aluminum foil layer 202, a second heat sealing layer 201 which is the same as the first heat sealing layer 104 in material is compounded on the upper surface of the aluminum foil layer 202, and the sealing layer 203, the aluminum foil layer 202 and the second heat sealing layer 201 jointly form a lower sealing layer 2; dense pinholes 3 are respectively arranged on the first heat seal layer 104 and the second heat seal layer 201;
and (4) heat-sealing the middle parts of the upper sealing layer 1 and the lower sealing layer 2 together, and forming the sealing gasket without heat-sealing other areas.
In the manufacturing process of the sealing gasket, the upper sealing layer 1 and the lower sealing layer 2 are manufactured respectively, and a heat sealing layer for heat sealing is arranged on the lowest layer of the upper sealing layer 1 and the uppermost layer of the lower sealing layer 2, so that the upper sealing layer 1 can be heat-sealed with the lower sealing layer 2 according to the area requirement; because the materials of the second film layer 103, the first heat sealing layer 104 and the second heat sealing layer 201 are the same, the bonding effect of the sealing gasket during heat sealing is better under the condition of keeping the thickness thinner; meanwhile, due to the fact that the dense pinholes 3 are formed in the first heat sealing layer 104 and the second heat sealing layer 201, the integrity of the first heat sealing layer 104 and the second heat sealing layer 201 is damaged, the outline of the heat sealing part between the upper sealing layer 1 and the lower sealing layer 2 is easy to tear, tearing is convenient during use, and the situation that the upper sealing layer 1 is broken partially and the lower sealing layer 2 is not torn does not occur.
The sealing gasket manufactured by the manufacturing process is characterized in that the heat sealing layer only carries out heat sealing on the middle parts of the upper sealing layer 1 and the lower sealing layer 2, and the edges of the upper sealing layer 1 and the lower sealing layer 2 are not heat sealed, so that a gap is formed between the edge of the upper sealing layer 1 and the edge of the lower sealing layer 2, when the sealing gasket needs to be torn, all the positions of the edge of the upper sealing layer 1 can be used as lifting parts, the lifting parts are convenient to lift, and the lower sealing layer 2 below is torn together without arranging additional lifting parts.
Example 2
This embodiment differs from embodiment 1 in that: as shown in fig. 4-6, in step (4), a handle part 4', an annular cutting line 5' and a strip-shaped cutting line 6' are arranged at the middle position of the upper sealing layer 1', the handle part 4' is positioned in the area surrounded by the annular cutting line 5', and the annular cutting line 5' and the handle part 4' are connected through the strip-shaped cutting line 6 '; and (3) heat-sealing the upper sealing layer 1 'and the lower sealing layer together to form a sealing gasket except the corresponding area of the handle part 4'.
The sealing gasket manufactured by the manufacturing process is characterized in that the handle part 4' is not attached to the lower sealing layer, so that the handle part 4' can be easily uncovered and is not easy to break, and when the handle part 4' is pulled upwards, the handle part 4' tears the lower sealing layer along the strip tearing line and the annular cutting line 5 '.
Example 3
This embodiment differs from embodiment 1 in that: as shown in fig. 7-9, in step (4), a handle part 4", an annular cutting line 5" and a strip-shaped cutting line 6 "are arranged at the middle position of the upper sealing layer 1", the handle part 4 "is positioned in the area surrounded by the annular cutting line 5", and the annular cutting line 5 "and the handle part 4" are connected through the strip-shaped cutting line 6 "; a plurality of through holes 7 'are arranged at the middle position of the lower sealing layer 2'; and (3) heat-sealing the region of the upper sealing layer 1' except the region surrounded by the upper annular cutting line 5' and the region corresponding to the lower sealing layer 2 ' together, wherein the rest regions are not bonded to form the sealing gasket.
When the sealing gasket manufactured by the manufacturing process is torn, as the upper sealing layer 1 is only in heat sealing with the peripheral edge of the lower sealing layer 2 ', the whole area surrounded by the annular cutting line 5' in the upper sealing layer 1 can be torn by the handle 4', the lower sealing layer 2 ' is not damaged, and each through hole 7 ' can be exposed. In general, a bottle stopper and a bottle cap are arranged at the bottle mouth of the existing seasoning bottle, the bottle stopper is plugged at the bottle mouth, a plurality of through holes 7' for sprinkling seasonings are formed in the bottle stopper, and the bottle cap covers the bottle stopper after the seasonings are used; the prior bottle stopper is generally made of plastic. The sealing gasket can replace the bottle stopper of the seasoning bottle, so that the cost is effectively reduced, and the edge area of the upper sealing layer 1 'is still in heat sealing with the lower sealing layer 2' and is not influenced by tearing of the middle area, so that the seasoning bottle can be better resealed after the bottle cap is covered after the seasoning is used.
Example 4
This embodiment differs from embodiment 1 in that: in the step (1), the materials of the first film layer and the second film layer are not the same as those of the foaming layer, and the first film layer and the second film layer are respectively compounded on two sides of the foaming layer through glue. In this case, the first film layer, the second film layer, the first heat seal layer, and the second heat seal layer are selected in a wider range.
Claims (8)
1. The manufacturing process of the sealing gasket is characterized by comprising the following steps of:
step (1), respectively compounding a first film layer and a second film layer on the upper surface and the lower surface of the foaming layer to form a double-sided laminated foaming layer;
step (2), a first heat sealing layer with the same material is heat-sealed on the lower surface of the second film layer, and the double-sided composite film foaming layer and the first heat sealing layer jointly form an upper sealing layer;
step (3), compounding a sealing layer on the lower surface of the aluminum foil layer, compounding a second heat sealing layer which is the same as the first heat sealing layer in material on the upper surface of the aluminum foil layer, and forming a lower sealing layer together by the sealing layer, the aluminum foil layer and the second heat sealing layer;
and (4) heat-sealing the first heat-sealing layer of the upper sealing layer and the second heat-sealing layer of the lower sealing layer to form the sealing gasket.
2. The process for manufacturing a gasket for sealing of claim 1, wherein: the step (3) further comprises the step of arranging dense pinholes on the first heat sealing layer and the second heat sealing layer respectively.
3. The process for manufacturing a gasket for sealing of claim 1, wherein: in the step (4), the manner adopted for performing heat sealing on the first heat sealing layer of the upper sealing layer and the second heat sealing layer of the lower sealing layer is as follows: and (3) heat-sealing the middle parts of the upper sealing layer and the lower sealing layer together, wherein the rest areas are not heat-sealed.
4. The process for manufacturing a gasket for sealing of claim 1, wherein: in the step (4), a handle part, an annular cutting line and a strip cutting line are arranged at the middle position of the upper sealing layer, the handle part is positioned in an area surrounded by the annular cutting line, and the annular cutting line is connected with the handle part through the strip cutting line.
5. The process for manufacturing a gasket for sealing as set forth in claim 4, wherein: in the step (4), the manner adopted for performing heat sealing on the first heat sealing layer of the upper sealing layer and the second heat sealing layer of the lower sealing layer is as follows: and (3) heat-sealing the rest areas of the upper sealing layer and the lower sealing layer except the corresponding areas of the handle parts.
6. The process for manufacturing a gasket for sealing as set forth in claim 4, wherein: in the step (4), a plurality of through holes are arranged at the middle position of the lower sealing layer; the first heat sealing layer of the upper sealing layer and the second heat sealing layer of the lower sealing layer are subjected to heat sealing in the following manner: and (3) heat-sealing the region, which is outside the region enclosed by the annular cutting line, of the upper sealing layer and the region corresponding to the lower sealing layer together, wherein the rest regions are not adhered.
7. The process for manufacturing a gasket for sealing of claim 1, wherein: in the step (1), under the condition that the materials of the first film layer and the second film layer are the same as those of the foaming layer, the mode that the first film layer and the second film layer are compounded on the upper surface and the lower surface of the foaming layer is as follows: the first film layer and the second film layer are directly heat-sealed on two sides of the foaming layer.
8. The process for manufacturing a gasket for sealing of claim 1, wherein: in the step (1), under the condition that the materials of the first film layer and the second film layer are not the same as those of the foaming layer, the mode that the first film layer and the second film layer are compounded on the upper surface and the lower surface of the foaming layer is as follows: the first film layer and the second film layer are respectively compounded on two sides of the foaming layer through glue.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310633892.8A CN116714257A (en) | 2023-05-31 | 2023-05-31 | Manufacturing process of sealing gasket |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310633892.8A CN116714257A (en) | 2023-05-31 | 2023-05-31 | Manufacturing process of sealing gasket |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116714257A true CN116714257A (en) | 2023-09-08 |
Family
ID=87870745
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310633892.8A Pending CN116714257A (en) | 2023-05-31 | 2023-05-31 | Manufacturing process of sealing gasket |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116714257A (en) |
-
2023
- 2023-05-31 CN CN202310633892.8A patent/CN116714257A/en active Pending
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