CN112141514B - Silica gel milk storage bag and manufacturing method thereof - Google Patents
Silica gel milk storage bag and manufacturing method thereof Download PDFInfo
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- CN112141514B CN112141514B CN202011008992.4A CN202011008992A CN112141514B CN 112141514 B CN112141514 B CN 112141514B CN 202011008992 A CN202011008992 A CN 202011008992A CN 112141514 B CN112141514 B CN 112141514B
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- bag body
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D31/00—Bags or like containers made of paper and having structural provision for thickness of contents
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/0053—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor combined with a final operation, e.g. shaping
- B29C45/0055—Shaping
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
- B29C45/2602—Mould construction elements
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2022/00—Hollow articles
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- 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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W90/00—Enabling technologies or technologies with a potential or indirect contribution to greenhouse gas [GHG] emissions mitigation
- Y02W90/10—Bio-packaging, e.g. packing containers made from renewable resources or bio-plastics
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- Engineering & Computer Science (AREA)
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- Manufacturing & Machinery (AREA)
- Packging For Living Organisms, Food Or Medicinal Products That Are Sensitive To Environmental Conditiond (AREA)
Abstract
The invention discloses a silica gel milk storage bag and a manufacturing method thereof, belonging to the technical field of articles for daily use. The silica gel milk storage bag comprises a bag body part and a bag bottom part, an opening is formed in the bottom of the bag body part, the bag bottom part is blocked and opened, the bag bottom part is bonded to the inner side wall of the bottom part, and the bag body part and/or the bag bottom part are made of solid silica gel materials. The manufacturing method of the silica gel milk storage bag comprises the steps of plugging the bottom of the bag at the opening of the bag body, and then mutually bonding the bottom end of the bag body and the bottom of the bag to obtain the silica gel milk storage bag. The silica gel milk storage bag can be recycled and used repeatedly, is not easy to pollute the environment, decompose and age.
Description
Technical Field
The invention relates to the technical field of articles for daily use, in particular to a silica gel milk storage bag and a manufacturing method thereof.
Background
At present, plastic materials such as polypropylene or polyethylene are mainly used as the materials of the milk storage bag main body in the market, and then the seal is pressed. In the manufacturing process, a cutting machine is used for cutting the whole plastic according to a set size, the edge position is sealed in a hot pressing mode, two sealing chains are usually arranged at the top end of the bag opening, and a user can seal the bag opening after pouring milk. This milk storage bag body adopts the sealed effectual of plastics material, easy plasticity, and is with low costs, nevertheless also has following several technical problem:
firstly, when the waste is recycled, the classification is very difficult and the cost is high; secondly, the milk storage bag made of plastic materials is inflammable and generates toxic gas when burning or high temperature; thirdly, the plastic is refined by petroleum, and the petroleum resource is a limited resource; fourthly, the plastic is not easy to decompose; fifthly, the plastic has poor heat resistance and the like and is easy to age.
Disclosure of Invention
One objective of the present invention is to provide a silica gel milk storage bag, which can be recycled and used repeatedly, and is not easy to pollute the environment, decompose and age.
The invention also aims to provide a manufacturing method of the silica gel milk storage bag, which can reduce the process difficulty and is convenient for demoulding.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides a silica gel milk storage bag, includes bag body portion and bag bottom, the bottom of bag body portion is provided with the opening, bag bottom shutoff the opening just bonds in on the inside wall of bottom, bag body portion and/or the bag bottom adopts the solid-state silica gel material to make.
Optionally, the bag bottom is bonded to the inner side wall of the bottom of the bag body part through liquid silica gel.
Optionally, the silica gel milk storage bag further comprises a sealing part, and the sealing part is bonded on the bottom end face of the bag bottom part, the bottom end face of the bag body part and the inner side wall of the bottom part of the bag body part at the same time.
The silica gel milk storage bag has the beneficial effects that: the silica gel milk storage bag is formed by bonding the bag body part and the bag bottom part which are made of solid silica gel materials, the solid silica gel is a stable substance, does not react with any substance except strong alkali and hydrofluoric acid, is insoluble in water and any solvent, is nontoxic and tasteless, and has stable chemical properties. Therefore, the material can be recycled and used repeatedly, is not easy to pollute the environment, is easy to decompose and is not easy to age.
A manufacturing method of a silica gel milk storage bag comprises the following steps:
and plugging the bottom of the bag at the opening of the bag body, and then bonding the bottom of the bag body and the bottom of the bag to obtain the silica gel milk storage bag.
Optionally, the method for manufacturing the silica gel milk storage bag comprises the following steps:
s1, injecting the solid silica gel which is heated at high temperature to form flowing solid silica gel into the bag body mould until the flowing solid silica gel is cooled into solidified solid silica gel to form the bag body part; injecting the flowing solid silica gel into a bag bottom mold until the flowing solid silica gel is cooled into the solidified solid silica gel to form the bag bottom;
s2, sleeving the bag bottom on a bottom sleeve mold, sleeving the bag body on the bag bottom, and supporting the bottom sleeve mold assembled with the bag bottom and the bag body to be placed in a main body mold;
s3, main part mould arrives the injecting glue along the conveyer belt and heats in the storehouse, the injecting glue pipe of injecting glue pressfitting machine with the injecting glue hole butt joint of bottom cover mould injects liquid silica gel, liquid silica gel follows the guiding gutter of injecting glue hole both sides flows in bag bottom with on the contact surface of bag body portion, under temperature and the time of predetermineeing the bag bottom with bag body portion bonds, takes out after bonding bag bottom and bag body portion treat that normal atmospheric temperature cooling obtains the shaping the silica gel stores up milk bag.
Optionally, the bottom cover die is detachably placed in the main body die.
Optionally, in step S2, an annular channel is formed between the edge end of the bag bottom and the edge end of the injection portion of the bottom cover die, the liquid silicone rubber flows into the annular channel from the diversion trench, and after the liquid silicone rubber is solidified, the sealing portion made of the liquid silicone rubber is bonded to the edge end of the bag bottom and the edge end of the bag body.
Optionally, the step of manufacturing the silica gel milk storage bag further includes a step S4 of cleaning the rim charge in the injection hole and the diversion trench.
Optionally, the preset temperature is in the range of 130 ℃ to 160 ℃; the preset time ranges from 50s to 60 s.
Optionally, a gap is arranged between the injection part and the pressing cover of the glue injection pressing machine.
The method for manufacturing the silica gel milk storage bag has the beneficial effects that: the step of manufacturing the silica gel milk storage bag can solve the problems of low hardness and low rigidity of a silica gel semi-finished product, the bag body part and the bag bottom are sequentially sleeved on the bottom sleeve mold to provide supporting acting force, then the bottom sleeve mold is placed into the main body mold, the bag body part and the bag bottom can be bonded through high-temperature molding in the glue injection heating bin, demolding and taking out are facilitated, and the process difficulty is low.
Drawings
FIG. 1 is a schematic structural diagram of a silica gel milk storage bag according to an embodiment of the present invention;
FIG. 2 is a schematic illustration of the bag body and bag bottom when unbonded as provided by an embodiment of the invention;
FIG. 3 is a schematic structural view of a bottom shell mold provided in accordance with an embodiment of the present invention;
FIG. 4 is a schematic structural diagram of a main body mold for placing a bag body and sleeving a bag bottom on a bottom sleeve mold according to an embodiment of the present invention;
FIG. 5 is a cross-sectional view of a seal engaged with a body portion and a bottom portion of a bag according to an embodiment of the present invention;
fig. 6 is a flowchart of a method for manufacturing a specific silica gel milk storage bag according to an embodiment of the present invention.
Reference numerals:
1-bag body part, 2-bag bottom part, 3-sealing part, 4-bottom cover die, 41-annular channel, 42-injection part, 43-glue injection hole, 44-diversion trench, 5-main body die and 6-handle.
Detailed Description
In order to make the technical problems solved, the technical solutions adopted and the technical effects achieved by the present invention clearer, the technical solutions of the present invention are further described below by way of specific embodiments with reference to the accompanying drawings.
The specific structure of the silicone milk storage bag according to the embodiment of the present invention is described below with reference to fig. 1 to 5.
It should be noted in advance that liquid silica gel and solid silica gel are respectively one type of silica gel, the physical parameters of the liquid silica gel and the solid silica gel are different, the liquid silica gel has fluidity, the solid silica gel has fluidity after being heated at high temperature, and the hardness of the solid silica gel is greater than that of the liquid silica gel.
As shown in fig. 1 and fig. 2, the present embodiment provides a silica gel milk storage bag, which includes a bag body portion 1 and a bag bottom portion 2, wherein the bottom of the bag body portion 1 is provided with an opening, the bag bottom portion 2 plugs the opening and is bonded to the inner side wall of the bottom portion, and the bag body portion 1 and/or the bag bottom portion 2 are made of solid silica gel.
It should be noted that the bag body 1 and/or the bag bottom 2 are formed by bonding the bag body and the bag bottom made of solid silica gel, the solid silica gel is a stable substance, does not react with any substance except strong alkali and hydrofluoric acid, is insoluble in water and any solvent, is nontoxic and odorless, and has stable chemical properties. Therefore, the material can be recycled and used repeatedly, is not easy to pollute the environment, is easy to decompose and is not easy to age.
Optionally, the bag bottom 2 is bonded to the inner side wall of the bottom of the bag body 1 by liquid silicone.
It can be understood that the liquid silica gel has better stability as well as the solid silica gel, and in addition, has the advantages of firm bonding and good sealing property. Except strong alkali and hydrofluoric acid, the paint does not react with any substance, is insoluble in water and any solvent, is nontoxic and tasteless, and has stable chemical properties. Therefore, the material can be recycled and used repeatedly, is not easy to pollute the environment, is easy to decompose and is not easy to age.
Optionally, as shown in fig. 1 and 5, the silicone milk storage bag further includes a sealing part 3, and the sealing part 3 is adhered to both the bottom end face of the bag bottom part 2 and the edge end face of the bag body part 1 and the inner side wall of the bottom part of the bag body part 1.
It should be noted that, the sealing portion 3 is bonded on the end faces of the bottom ends of the bag body portion 1 and the bag bottom portion 2 and on the inner side wall of the bottom of the bag body portion 1, so as to further enhance the sealing effect, and when the liquid milk is injected into the silica gel milk storage bag, the liquid milk does not leak from the bonding portion, so that the storage and the use are facilitated.
Specifically, the sealing portion 3 is made of a silicone material, and has the advantages of being not easy to pollute the environment, easy to decompose, not easy to age, and the like, as well as the bag body portion 1 and the bag bottom portion 2.
Specifically, the bag bottom 2 may be a straight structure or a convex structure. The bag bottom 2 of the convex structure has a better sealing effect than the bag bottom 2 of the straight structure.
The method for manufacturing the silica gel milk storage bag according to the embodiment of the present invention will be described with reference to fig. 1 to 5.
A method for manufacturing a silica gel milk storage bag comprises the steps of plugging a bag bottom 2 at an opening of a bag body 1, and then mutually bonding the bottom end of the bag body 1 and the bag bottom 2 to obtain the silica gel milk storage bag.
As shown in fig. 5, a method for manufacturing a silica gel milk storage bag comprises the following steps:
s1, injecting the flowing solid silica gel formed by high-temperature heating into the bag body mould until the flowing solid silica gel is cooled into solidified solid silica gel to form the bag body part 1; and the flowing solid silica gel is injected into the bag bottom die until the flowing solid silica gel is cooled into solidified solid silica gel to form a bag bottom 2;
s2, sleeving the bag bottom 2 on the bottom sleeve mold 4, sleeving the bag body part 1 on the bag bottom 2, supporting the bottom sleeve mold 4 assembled with the bag bottom 2 and the bag body part 1, and placing the bottom sleeve mold 4 into the main body mold 5;
s3, the main body mold 5 is conveyed to a glue injection heating bin, a glue injection pipe of the glue injection press is in butt joint with the glue injection hole 43 of the bottom sleeve mold 4, liquid silica gel is injected into the glue injection pipe, the liquid silica gel flows into the contact surface of the bag bottom 2 and the bag body 1 from the flow guide grooves 44 on the two sides of the glue injection hole 43, the bag bottom 2 and the bag body 1 are bonded at a preset temperature and in a preset time, the bonded bag bottom 2 and the bonded bag body 1 are taken out, and the molded silica gel milk storage bag is obtained after normal temperature cooling.
It can be understood that, firstly, liquid silica gel is respectively injected into the bag body mold and the bag bottom mold, and after the flowing solid silica gel is cooled into solidified solid silica gel, semi-finished products of the silica gel milk storage bag, namely, the bag bottom 2 and the bag body 1, are obtained. The bag bottom 2 of the semi-finished product is sleeved on the bottom sleeve mold 4 to be fixed, then the bag body 1 of the semi-finished product is sleeved on the bag bottom 2 assembled on the bottom sleeve mold 4, and the bottom sleeve mold 4 assembled with the bag bottom 2 and the bag body 1 is supported by hands or an auxiliary tool to be placed in the main body mold 5. Open the switch that the control conveyer belt removed, main part mould 5 arrives in the injecting glue storehouse of heating along direction of delivery, carry out the heating under temperature and the predetermined time of predetermineeing, liquid silica gel in the injecting glue pipe flows into injecting glue hole 43, flow into towards the guiding gutter 44 of the relative both sides of injecting glue hole 43 again, until the contact surface that reaches bag bottom 2 and bag body 1 is in order to carry out the silica gel bonding, the sealing connection of bag bottom 2 and bag body 1 has been realized, treat that the normal atmospheric temperature cooling obtains fashioned silica gel bag of storing up milk.
The steps for manufacturing the silica gel milk storage bag can solve the problems of low hardness and low rigidity of a silica gel semi-finished product, the bag body part 1 and the bag bottom part 2 are sequentially sleeved on the bottom sleeve mold 4 to provide a powerful supporting effect, the bottom sleeve mold 4 is placed into the main body mold 5, the bag body part 1 and the bag bottom part 2 can be bonded through high-temperature molding in the glue injection heating bin, demolding and taking out are facilitated, and the process difficulty is low.
Alternatively, the bottom cover mold 4 is detachably placed in the main body mold 5.
It can be understood that, because the bottom cover die 4 is detachably placed in the main body die 5, firstly, the bottom cover die 4 is convenient to take out and load the bag bottom 2 and the bag body 1, and then the bottom die sleeved with the bag bottom 2 and the bag body 1 is placed in the main body die 5 for subsequent silica gel injection; secondly, when the bottom cover die 4 is not used, the bottom cover die is placed in the main body die 5, so that the storage is convenient, and the space is saved.
Alternatively, as shown in fig. 3, in step S2, an annular channel 41 is formed between the edge end of the bag bottom 2 and the edge end of the injection portion 42 of the bottom cover die 4, the liquid silicone rubber flows into the annular channel 41 from the guiding groove 44, and after the liquid silicone rubber is solidified, the sealing portion 3 made of the liquid silicone rubber is adhered to the edge ends of the bag bottom 2 and the bag body 1.
It should be noted that, the sealing portion 3 made of liquid silicone rubber is adhered to the edge ends of the bag bottom portion 2 and the bag body portion 1 to form an integral structure, and the annular channel 41 facilitates the liquid silicone rubber to flow into the sealing portion 3. The sealing part 3 further enhances the sealing performance, and when the liquid milk is injected into the silica gel milk storage bag, the liquid milk is not easy to leak out from the bonding part, thereby being convenient for storage and use.
Specifically, as shown in fig. 4, in step S2, the bottom cover mold 4 assembled with the bag bottom 2 and the bag body 1 is held and placed in the main body mold 5, centered and aligned. It can be understood that the bottom sleeve mold 4 is placed in the middle, the position is correct, the butt joint of the glue injection pipe and the glue injection hole 43 is facilitated to be more accurate, and the liquid silica gel is not prone to side leakage.
Optionally, the step of manufacturing the silica gel milk storage bag further includes a step S4, which is to clean the rim charge in the glue injection hole 43 and the diversion trench 44, so as to ensure the beauty and tidiness of the silica gel milk storage bag.
Optionally, the preset temperature range is 130-160 ℃, the fluidity of the liquid silica gel is relatively good, and the normal-temperature cooling time for taking out the bonded bag body 1 and the bag bottom 2 is short. If the preset temperature is higher than 160 ℃, the liquidity of the liquid silica gel is weak, and the liquid silica gel is not favorable for flowing into the flow guide groove 44 from the glue injection hole 43; if the preset temperature is lower than 130 ℃, the waiting time for cooling is longer, and the production efficiency is reduced. Of course, in other embodiments of the present invention, the preset temperature may be adjusted according to actual requirements.
Optionally, the preset time range is 50s-60s, and the time period can not only ensure the glue injection effect, but also ensure the glue injection efficiency. Of course, in other embodiments of the present invention, the preset time can be adjusted according to actual requirements.
Optionally, a gap is provided between the injection portion 42 and the pressing cover of the glue injection pressing machine.
It should be noted that, because a gap is formed between the injection portion 42 and the press cover, the liquid silica gel can flow into the flow guide groove 44 from the glue injection hole 43 through the plane tables on both sides, and then flow into the contact surface between the bag bottom 2 and the bag body 1 and the annular channel 41 from the flow guide groove 44, and after cooling at normal temperature, the rim charge in the glue injection hole 43 and the flow guide groove 44 is cleaned.
Optionally, as shown in fig. 3, a handle 6 is provided on the bottom cover die 4, and an operator can lift the handle 6 to lift the bottom cover die 4.
In the description herein, references to the description of "some embodiments," "other embodiments," or the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Further, it is to be understood that the terms "upper", "lower", "inner", "outer", "vertical", "horizontal", and the like, as used herein, refer to an orientation or positional relationship based on that shown in the drawings, which is for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
In the present invention, unless otherwise expressly stated or limited, the terms "connected," "mounted," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other suitable relationship. Those skilled in the art can understand the above specific meanings included in the present invention according to specific situations.
Furthermore, features defined as "first" and "second" may explicitly or implicitly include one or more of the features for distinguishing between descriptive features, non-sequential, non-trivial and non-trivial. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
The above description is only a preferred embodiment of the present invention, and for those skilled in the art, the present invention should not be limited by the description of the present invention, which should be interpreted as a limitation.
Claims (5)
1. A method for manufacturing a silica gel milk storage bag is characterized by comprising the following steps: a silica gel milk storage bag comprises the following steps:
the silica gel milk storage bag comprises a bag body part (1) and a bag bottom part (2), an opening is formed in the bottom of the bag body part (1), the bag bottom part (2) seals the opening and is bonded to the inner side wall of the bottom part, and the bag body part (1) and/or the bag bottom part (2) are made of solid silica gel materials;
the bag is characterized by further comprising a sealing part (3), wherein the sealing part (3) is simultaneously bonded on the bottom end surface of the bag bottom part (2), the bottom end surface of the bag body part (1) and the inner side wall of the bottom part of the bag body part (1);
the steps are as follows:
plugging the bag bottom (2) at the opening of the bag body part (1), and then mutually bonding the bottom of the bag body part (1) and the bag bottom (2) to obtain a silica gel milk storage bag;
the method comprises the following specific steps:
s1, injecting the solid silica gel which is heated at high temperature to form a flow into the bag body mould until the solid silica gel which is heated at high temperature is cooled into solidified solid silica gel, and forming the bag body part (1); and the flowing solid silica gel is injected into the bag bottom die until the flowing solid silica gel is cooled into solidified solid silica gel to form the bag bottom (2);
s2, sleeving the bag bottom (2) on a bottom sleeve mold (4), sleeving the bag body part (1) on the bag bottom (2), supporting the bottom sleeve mold (4) assembled with the bag bottom (2) and the bag body part (1), and placing the bottom sleeve mold into a main body mold (5);
s3, main part mould (5) reach the injecting glue along the conveyer belt and heat the storehouse in, the injecting glue pipe of injecting glue pressfitting machine with injecting glue hole (43) butt joint and injection liquid silica gel of bottom cover die (4), liquid silica gel is followed guiding gutter (44) of injecting glue hole (43) both sides flow into bag bottom (2) with on the contact surface of bag body portion (1), under temperature of predetermineeing and time of predetermineeing bag bottom (2) with bag body portion (1) bonds, takes out after bonding bag bottom (2) with bag body portion (1), treat that normal atmospheric temperature cooling obtains the shaping silica gel storage milk bag, the edge end of bag bottom (2) with form between the edge end of the injection portion (42) of bottom cover die (4) annular channel (41), liquid silica gel follows guiding gutter (44) flow in annular channel (41), wait after liquid silica gel solidifies, the bag bottom (2) with the edge end face of bag body portion (1) goes up to bond and has the material to be liquid silicone's sealing part (3).
2. The method for manufacturing the silica gel milk storage bag according to claim 1, wherein the bottom cover mold (4) is detachably placed in the main body mold (5).
3. The method for manufacturing a silica gel milk storage bag according to claim 1, further comprising a step of S4, wherein the rim charge in the pouring hole (43) and the diversion trench (44) is cleaned.
4. The method for manufacturing the silica gel milk storage bag according to claim 1, wherein the preset temperature is in the range of 130 ℃ to 160 ℃; the preset time ranges from 50s to 60 s.
5. The method for manufacturing the silica gel milk storage bag according to claim 1, wherein a gap is provided between the injection part (42) and the pressing cover of the glue injection pressing machine.
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| CN202011008992.4A CN112141514B (en) | 2020-09-23 | 2020-09-23 | Silica gel milk storage bag and manufacturing method thereof |
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| CN202011008992.4A CN112141514B (en) | 2020-09-23 | 2020-09-23 | Silica gel milk storage bag and manufacturing method thereof |
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