CN110920199A - Method for manufacturing 121 ℃ steaming bag capable of resisting food discoloration - Google Patents
Method for manufacturing 121 ℃ steaming bag capable of resisting food discoloration Download PDFInfo
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- CN110920199A CN110920199A CN201911335262.2A CN201911335262A CN110920199A CN 110920199 A CN110920199 A CN 110920199A CN 201911335262 A CN201911335262 A CN 201911335262A CN 110920199 A CN110920199 A CN 110920199A
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- film
- bag
- manufacturing
- polyurethane
- adhesive
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B15/08—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
- B32B15/09—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin comprising polyesters
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/20—Layered products comprising a layer of metal comprising aluminium or copper
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/34—Layered products comprising a layer of synthetic resin comprising polyamides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B29/00—Layered products comprising a layer of paper or cardboard
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/12—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B38/00—Ancillary operations in connection with laminating processes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
- B32B7/04—Interconnection of layers
- B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
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- Wrappers (AREA)
- Packages (AREA)
Abstract
The invention discloses a method for manufacturing a 121 ℃ retort pouch with food discoloration resistance, the main formula components of the retort pouch are polyurethane ink, nano epoxy resin, green polyurethane adhesive, 4 percent HAC, 1 percent sodium sulfide (Na2S), 5 percent sodium chloride (NaCl) aqueous solution and refined vegetable oil, the composite film is compounded, then corona treatment is carried out again, and the composite film is subjected to double-layer corona treatment, thus, the integral structure of the composite film is more stable, the problem of the reduction of the stability of the composite film in the later processing can be avoided, meanwhile, the curing agent is added in batches for multiple times when being added, so that the added curing agent can fully and effectively perform the curing effect, the problem that the curing agent added at one time cannot well react is solved, and the problem that the existing cooking bag is delaminated after being filled with food for cooking is solved.
Description
Technical Field
The invention belongs to the technical field of articles for daily use, and particularly relates to a manufacturing method of a 121-DEG C steaming and boiling bag capable of resisting food discoloration.
Background
Retort pouches are composite plastic film pouches that can be heat treated, having the advantages of both can containers and boiling resistant plastic bags, and are also known as soft cans. After more than ten years of use, the packaging container is proved to be an ideal packaging container for sale.
The prior steaming and boiling bag technology has the following problems: the delamination phenomenon occurs after food is placed into the existing steaming bag for steaming, and when the delamination phenomenon is slight, the delamination phenomenon is generally shown in that a stress part or an ink layer of the packaging bag is in a stripe shape and is easy to peel off after being opened by hands or needles; in the heavy case, the layer is naturally delaminated in a large area after cooking, which causes a problem of great loss in the use of the cooking bag.
Disclosure of Invention
The invention aims to provide a method for manufacturing a 121 ℃ steaming bag with food discoloration resistance, which solves the problem of delamination phenomenon after food is filled into the existing steaming bag and steamed, which is proposed in the background art.
In order to achieve the purpose, the invention provides the following technical scheme:
a method for manufacturing a 121 ℃ retort pouch with food discoloration resistance comprises the main formula components of polyurethane ink, nano epoxy resin, green polyurethane adhesive, 4% HAC, 1% sodium sulfide (Na2S), 5% sodium chloride (NaCl) aqueous solution and refined vegetable oil.
Preferably, the method for manufacturing the retort pouch comprises the following operation steps:
the method comprises the following steps: taking polyurethane ink, adding 1.5-2.0 wt% of hardener into the polyurethane ink, adding less polyurethane ink at one time, wherein the adding amount of the polyurethane ink is the same each time, stirring uniformly, and printing on a PET film;
step two: compounding the printed PET film and an aluminum foil in a dry compounding machine, and performing corona treatment on the compounded film;
step three: compounding the composite film and a nylon film, wherein the glue coating amount is 4.5-5.5 g/m2, the oven temperature is 60-70 ℃, the composite roller temperature is 80-90 ℃, the compounding pressure is 0.4-0.45 Mpa, and the machine speed is 60-90 m/min, then placing the composite film into a curing chamber, and curing for 48-72 hours at 50-60 ℃;
step four: making a bag from the compounded film, filling the bag into 4% HAC, 1% sodium sulfide (Na2S), 5% sodium chloride (NaCl) water solution and refined vegetable oil, exhausting and sealing, carrying out high-temperature pressure sterilization at 121 ℃ for 40min in an autoclave with a back pressure cooling device, cooling to below 40 ℃ under the condition of keeping the pressure, taking out, opening the bag and carrying out inspection one by one;
step five: mixing the nano epoxy resin with 83-93 wt% of green polyurethane adhesive, putting the mixture into a stirrer, stirring the mixture for 1-2 hours at the temperature of 60-80 ℃, and defoaming the mixture in vacuum;
step six: ultrasonically vibrating in an ultrasonic vibrator for 30-60 minutes, and standing for 1-2 days to form a nano binder;
step seven: and cutting to obtain the four-layer color-printed high-temperature steaming bag.
Preferably, the retort pouch delaminates for the following reasons:
firstly, the method comprises the following steps: the amount of the curing agent used is not controlled stably;
II, secondly: the curing time of the composite post-treatment is not enough. The short time causes insufficient resin crosslinking reaction, insufficient bonding strength and reduced temperature resistance;
thirdly, the method comprises the following steps: the activity of the printing ink or the adhesive is insufficient, or the proportion is disordered due to the fact that moisture diffuses into the printing ink or the adhesive in the production process under the high-temperature and high-humidity condition and isocyanate in a part of curing agent is consumed;
fourthly, the method comprises the following steps: the problem of base materials, namely, in the curing process of the film, the additive in the film is precipitated quickly under the condition of long-time high temperature, and the bonding strength is also reduced;
fifthly: the type of adhesive is not properly selected.
Compared with the prior art, the invention provides a manufacturing method of a 121 ℃ steaming bag capable of resisting food discoloration, which has the following beneficial effects:
according to the invention, the composite film is subjected to corona treatment again after being compounded, and the composite film subjected to double-layer corona treatment has a more stable overall structure, so that the problem of stability reduction of the composite film in later-stage processing is solved, and meanwhile, the curing agent is added in batches for multiple times when being added, so that the added curing agent can be fully and effectively cured, the problem that the curing agent added at one time cannot well react is solved, and the problem that the existing cooking bag is delaminated after being filled with food and cooked is solved.
Detailed Description
The invention provides a technical scheme that:
a method for manufacturing 121 ℃ retort pouch with food discoloration resistance comprises the main formula components of polyurethane ink, nano epoxy resin, green polyurethane adhesive, 4% HAC, 1% sodium sulfide (Na2S), 5% sodium chloride (NaCl) aqueous solution and refined vegetable oil.
The manufacturing method of the cooking bag comprises the following operation steps:
the method comprises the following steps: taking polyurethane ink, adding 1.5-2.0 wt% of hardener into the polyurethane ink, adding less polyurethane ink at one time, wherein the adding amount of the polyurethane ink is the same each time, stirring uniformly, and printing on a PET film;
step two: compounding the printed PET film and an aluminum foil in a dry compounding machine, and performing corona treatment on the compounded film;
step three: compounding the composite film and a nylon film, wherein the glue coating amount is 4.5-5.5 g/m2, the oven temperature is 60-70 ℃, the composite roller temperature is 80-90 ℃, the compounding pressure is 0.4-0.45 Mpa, and the machine speed is 60-90 m/min, then placing the composite film into a curing chamber, and curing for 48-72 hours at 50-60 ℃;
step four: making a bag from the compounded film, filling the bag into 4% HAC, 1% sodium sulfide (Na2S), 5% sodium chloride (NaCl) water solution and refined vegetable oil, exhausting and sealing, carrying out high-temperature pressure sterilization at 121 ℃ for 40min in an autoclave with a back pressure cooling device, cooling to below 40 ℃ under the condition of keeping the pressure, taking out, opening the bag and carrying out inspection one by one;
step five: mixing the nano epoxy resin with 83-93 wt% of green polyurethane adhesive, putting the mixture into a stirrer, stirring the mixture for 1-2 hours at the temperature of 60-80 ℃, and defoaming the mixture in vacuum;
step six: ultrasonically vibrating in an ultrasonic vibrator for 30-60 minutes, and standing for 1-2 days to form a nano binder;
step seven: and cutting to obtain the four-layer color-printed high-temperature steaming bag.
The reason for retort pouch delamination is as follows:
firstly, the method comprises the following steps: the amount of the curing agent used is not controlled stably;
II, secondly: the curing time of the composite post-treatment is not enough. The short time causes insufficient resin crosslinking reaction, insufficient bonding strength and reduced temperature resistance;
thirdly, the method comprises the following steps: the activity of the printing ink or the adhesive is insufficient, or the proportion is disordered due to the fact that moisture diffuses into the printing ink or the adhesive in the production process under the high-temperature and high-humidity condition and isocyanate in a part of curing agent is consumed;
fourthly, the method comprises the following steps: the problem of base materials, namely, in the curing process of the film, the additive in the film is precipitated quickly under the condition of long-time high temperature, and the bonding strength is also reduced;
fifthly: the type of adhesive is not properly selected.
The working principle and the using process of the invention are as follows:
adding 1.5-2.0 wt% of a hardening agent into polyurethane ink, adding the polyurethane ink in a small amount at one time, uniformly stirring, printing on a PET film, compounding the printed PET film and an aluminum foil in a dry compounding machine, performing corona treatment on the compounded film, compounding the composite film and a nylon film, coating the coating with the coating amount of 4.5-5.5 g/m2, drying at 60-70 ℃, compounding at 80-90 ℃, compounding at the pressure of 0.4-0.45 and the machine speed of 60-90 m/min, placing the film into a curing chamber, curing at 50-60 ℃ for 48-72 h, making bags from the compounded film, then filling 4% HAC, 1% sodium sulfide (Na2S), 5% sodium chloride (NaCl) aqueous solution and refined vegetable oil, performing exhaust sealing, and performing back pressure sterilization in a high-pressure cooker with a back pressure cooling device at 121 ℃, And (2) carrying out high-temperature pressure sterilization for 40min, cooling to below 40 ℃ under the condition that the pressure is kept unchanged, taking out, opening the bags, carrying out inspection one by one, mixing the nano epoxy resin with 83-93 wt% of green polyurethane adhesive, putting the mixture into a stirrer, stirring for 1-2 hours at the temperature of 60-80 ℃, carrying out vacuum defoaming, carrying out ultrasonic vibration for 30-60 minutes in an ultrasonic vibrator, standing for 1-2 days to form a nano adhesive, and slitting to obtain the four-layer color-printed high-temperature steaming bag.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (3)
1. A method for manufacturing a 121 ℃ steaming bag capable of resisting food discoloration is characterized in that: the main formula components of the cooking bag are polyurethane ink, nano epoxy resin, green polyurethane adhesive, 4% HAC, 1% sodium sulfide (Na2S), 5% sodium chloride (NaCl) aqueous solution and refined vegetable oil.
2. The method for manufacturing the 121 ℃ retort pouch with resistance to food discoloration according to claim 1, wherein: the manufacturing method of the cooking bag comprises the following operation steps:
the method comprises the following steps: taking polyurethane ink, adding 1.5-2.0 wt% of hardener into the polyurethane ink, adding less polyurethane ink at one time, wherein the adding amount of the polyurethane ink is the same each time, stirring uniformly, and printing on a PET film;
step two: compounding the printed PET film and an aluminum foil in a dry compounding machine, and performing corona treatment on the compounded film;
step three: compounding the composite film with a nylon film, gluing after compounding, and then placing in a curing chamber;
step four: after the compounded film is made into a bag, 4 percent HAC, 1 percent sodium sulfide (Na2S), 5 percent sodium chloride (NaCl) water solution and refined vegetable oil are filled into the bag for exhausting and sealing;
step five: mixing the nano epoxy resin with 83-93 wt% of green polyurethane adhesive, and stirring in a stirrer;
step six: ultrasonically vibrating in an ultrasonic vibrator, and standing to form a nano binder;
step seven: and cutting to obtain the four-layer high-temperature steaming bag.
3. The method for manufacturing the 121 ℃ retort pouch with resistance to food discoloration according to claim 1, wherein: the reason for delamination of the retort pouch is as follows:
firstly, the method comprises the following steps: the amount of the curing agent used is not controlled stably;
II, secondly: the curing time of the composite post-treatment is not enough. The short time causes insufficient resin crosslinking reaction, insufficient bonding strength and reduced temperature resistance;
thirdly, the method comprises the following steps: the activity of the printing ink or the adhesive is insufficient, or the proportion is disordered due to the fact that moisture diffuses into the printing ink or the adhesive in the production process under the high-temperature and high-humidity condition and isocyanate in a part of curing agent is consumed;
fourthly, the method comprises the following steps: the problem of base materials, namely, in the curing process of the film, the additive in the film is precipitated quickly under the condition of long-time high temperature, and the bonding strength is also reduced;
fifthly: the type of adhesive is not properly selected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911335262.2A CN110920199A (en) | 2019-12-23 | 2019-12-23 | Method for manufacturing 121 ℃ steaming bag capable of resisting food discoloration |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911335262.2A CN110920199A (en) | 2019-12-23 | 2019-12-23 | Method for manufacturing 121 ℃ steaming bag capable of resisting food discoloration |
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| Publication Number | Publication Date |
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| CN110920199A true CN110920199A (en) | 2020-03-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911335262.2A Pending CN110920199A (en) | 2019-12-23 | 2019-12-23 | Method for manufacturing 121 ℃ steaming bag capable of resisting food discoloration |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103057236A (en) * | 2011-10-20 | 2013-04-24 | 利辛县宏达铝塑包装有限公司 | Preparation method of color-printed high-temperature retort pouch |
| CN103660437A (en) * | 2013-12-05 | 2014-03-26 | 广东挚信彩印有限公司 | Nanometer impermeable boiling bag, and nano-binder and making method thereof |
-
2019
- 2019-12-23 CN CN201911335262.2A patent/CN110920199A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103057236A (en) * | 2011-10-20 | 2013-04-24 | 利辛县宏达铝塑包装有限公司 | Preparation method of color-printed high-temperature retort pouch |
| CN103660437A (en) * | 2013-12-05 | 2014-03-26 | 广东挚信彩印有限公司 | Nanometer impermeable boiling bag, and nano-binder and making method thereof |
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Application publication date: 20200327 |