CN113561606A - Steam-resistant multilayer composite aluminum foil paper and production method thereof - Google Patents

Steam-resistant multilayer composite aluminum foil paper and production method thereof Download PDF

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Publication number
CN113561606A
CN113561606A CN202110793784.8A CN202110793784A CN113561606A CN 113561606 A CN113561606 A CN 113561606A CN 202110793784 A CN202110793784 A CN 202110793784A CN 113561606 A CN113561606 A CN 113561606A
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unit
layer
composite aluminum
resin layer
plate
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CN113561606B (en
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沈渠成
郑水法
周立新
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Huzhou Jinjie Packaging Co ltd
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Huzhou Jinjie Packaging Co ltd
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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
    • 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
    • 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
    • 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
    • B32B15/12—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 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
    • 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
    • B32B29/00—Layered products comprising a layer of paper or cardboard
    • B32B29/002—Layered products comprising a layer of paper or cardboard 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
    • B32B33/00—Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
    • 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
    • B32B37/06—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the heating method
    • 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
    • B32B38/16—Drying; Softening; Cleaning
    • B32B38/164—Drying
    • 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
    • B32B7/02—Physical, chemical or physicochemical properties
    • B32B7/027—Thermal properties
    • 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
    • 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
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/30—Properties of the layers or laminate having particular thermal properties
    • B32B2307/306—Resistant to heat
    • 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
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/726—Permeability to liquids, absorption
    • B32B2307/7265—Non-permeable

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  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Laminated Bodies (AREA)

Abstract

The invention belongs to the technical field of aluminum foil materials, and particularly relates to a steaming-resistant multilayer composite aluminum foil paper and a production method thereof. The invention provides a steam-resistant multilayer composite aluminum-foil paper, which can achieve the purposes of steam resistance and high structural strength of a lunch box made of the multilayer composite aluminum-foil paper by arranging a waterproof film layer, a first bonding layer, a paperboard layer, a second bonding layer, an aluminum foil layer and a resin layer in sequence from outside to inside and arranging structural reinforcing strips in the second bonding layer and the resin layer. The invention also provides a production method of the steam-resistant multilayer composite aluminum-foil paper, which can achieve the purposes of reasonable and effective fixing position of the structural reinforcing strips and simple and efficient whole production method by using a single-side blowing type electric heater to jointly, independently and adjustably dry and solidify the second bonding layer and the resin layer.

Description

Steam-resistant multilayer composite aluminum foil paper and production method thereof
Technical Field
The invention belongs to the technical field of aluminum foil materials, and particularly relates to a steaming-resistant multilayer composite aluminum foil paper and a production method thereof.
Background
The aluminum foil paper refers to a packaging material with a main structure of aluminum foil, which is commonly used in the field of food packaging, and is a heatable food box such as airplane meal. Due to the requirement of the application, the aluminum foil paper is required to have the characteristic of steaming resistance, and the aluminum foil paper is matched with the specific requirement of the use environment, which cannot be met by a single layer of aluminum foil, so that the composite aluminum foil material is formed.
The structure of each layer of the existing composite aluminum-foil paper mainly comprises a paperboard layer, a glue layer, an aluminum foil layer and a resin layer, wherein the paperboard layer is used for printing, printing or decoration, the resin layer is used for directly contacting food, and after all, if the aluminum foil directly contacts the food, the taste of the food can be influenced.
However, in the production and use processes of the existing composite aluminum foil paper, a plurality of problems are still found: firstly, the structure strength of the lunch box made of the existing composite aluminum foil paper is not enough, the lunch box can be flattened when being subjected to relatively small pressure, and if the lunch box is unfolded for use again, the indentation part is easy to bend and deform; secondly, in the production process of the existing composite aluminum-foil paper, the glue layer and the resin layer are required to be heated and cured, and if a part for reinforcing the structural strength of the composite aluminum-foil paper lunch box is introduced, the requirement on the heating and curing operation is higher, which cannot be met by the existing common heating equipment.
Therefore, in view of the above, there is a need for a composite aluminum-foil paper with a structural reinforcement member, and a method and apparatus for producing a complete set of composite aluminum-foil paper that can effectively process and install the structural reinforcement member.
The patent publication number is CN208881269U, and the china utility model patent that the announcement day is 2019.05.21 discloses an aluminium foil composite paper that can supply electromagnetism stove heating, drench the rete including printing layer, food level cardboard, glue layer, aluminium foil layer and PP, the smooth surface of food level cardboard is equipped with the printing layer, the another side of food level cardboard is equipped with the aluminium foil, through glue layer bonding between aluminium foil layer and the food level cardboard, the another side of aluminium foil layer is equipped with PP and drenches the rete, the thickness on aluminium foil layer is 0.005-0.01 mm.
But the aluminium foil composite paper in this utility model patent, it is after making the cutlery box, and the structural strength of cutlery box mainly relies on the aluminium foil layer, and this is not enough far away, and this cutlery box takes place the problem of buckling and collapsing very easily in the use.
In addition, patent publication number is CN 210759766U, the china utility model patent that the announcement day is 2020.06.16 discloses a drying device is used in paper products printing, which comprises a housin, between drying, the stoving roller, paper, between the cooling, both sides face and the bottom surface between drying are all inlayed and are had infrared heating pipe, casing and fixedly connected with high pressure positive blower are run through at the top of breathing pipe, the inside of stoving roller is inlayed and is had the heating rod, the gas pocket is evenly seted up on the surface of heating rod, it has water absorbent resin to inlay between the gas pocket, the equal fixedly connected with cooling fan in upper and lower both ends between the cooling, both ends all run through the casing and outwards extend about the paper, the junction of paper and casing is provided with auxiliary roller, the left end of paper passes between the cooling and fixedly connected with receipts paper section of thick bamboo.
But the utility model discloses a drying device in the patent, it can not both sides dry jointly, and whole stoving speed is not enough, and stoving operation is not comprehensive enough, uses to contain the glue or the resin layer of waiting to dry of strengthening part in, can cause the problem that strengthening part subsides because stoving speed is not enough, and strengthening part's position is just on the left, and final strengthening part promotes just not obvious to the structural strength of above-mentioned aluminium foil composite paper.
Disclosure of Invention
The invention provides a steam-resistant multilayer composite aluminum-foil paper, which can achieve the purposes of steam resistance and high structural strength of a lunch box made of the multilayer composite aluminum-foil paper by arranging a waterproof film layer, a first bonding layer, a paperboard layer, a second bonding layer, an aluminum foil layer and a resin layer in sequence from outside to inside and arranging structural reinforcing strips in the second bonding layer and the resin layer.
The invention also provides a production method of the steam-resistant multilayer composite aluminum-foil paper, which can achieve the purposes of reasonable and effective fixing position of the structural reinforcing strips and simple and efficient whole production method by using a single-side blowing type electric heater to jointly and adjustably dry and solidify the second bonding layer and the resin layer.
The technical scheme adopted by the invention for solving the problems is as follows: the utility model provides a resistant compound aluminium foil paper of multilayer who cooks, includes from outer waterproof rete, first tie coat, cardboard layer, second tie coat, aluminium foil layer and the resin layer to interior, all be equipped with the structure in second tie coat and the resin layer and strengthen the strip.
The further preferred technical scheme is as follows: the thickness of the second bonding layer is 0.03-0.06mm, the thickness of the resin layer is 0.04-0.09mm, the shape of the structure reinforcing strip is a round line shape, and the diameter of the structure reinforcing strip is 0.01-0.02 mm.
The further preferred technical scheme is as follows: the distance between the adjacent structural reinforcing strips is 1.0-2.5 cm.
The production method of the steam-resistant multilayer composite aluminum-foil paper comprises the steps of coating the first bonding layer and the second bonding layer at a coating speed of 20-30m/min, laminating the resin layer for preparation, drying the second bonding layer and the resin layer together by a single-side blowing type electric heater, and fixing the structural reinforcing strips in a height-limiting manner by adjusting the curing speed of the second bonding layer and the resin layer.
The further preferred technical scheme is as follows: the drying temperature of the second bonding layer is 40-55 ℃, and the drying temperature of the resin layer is 52-75 ℃.
A further preferred technical solution is that the structure of the single-side blowing type electric heater includes: an outer frame unit for penetrating a composite aluminum foil main body, an electric heating plate arranged in the outer frame unit and positioned below the composite aluminum foil main body, a main heat insulation plate unit arranged between the composite aluminum foil main body and the electric heating plate and used for performing heat gathering type drying operation on the downward resin layer, an auxiliary heat insulation plate unit arranged between the composite aluminum foil main body and a top plate of the outer frame unit and used for performing heat gathering type drying operation on the upward second bonding layer, a C-shaped pipe unit arranged on the inner side surface of the outer frame unit and used for performing vertical heat diversion between the main heat insulation plate unit and the auxiliary heat insulation plate unit, and rotary cylinder units respectively arranged at two ends of the electric heating plate and used for jacking and fixing the inner side surface of the outer frame unit and the C-shaped pipe unit, and the air inlet pipe is arranged on the external frame unit and blows air in sequence according to the sequence of the main heat insulation plate unit, the C-shaped pipe body unit and the auxiliary heat insulation plate unit.
The further preferred technical scheme is as follows: the outer frame unit comprises a rectangular frame body with openings at two ends, a lower air inlet pipe opening, an upper air outlet hole, a middle lower temperature measuring hole and a middle upper temperature measuring hole, wherein the lower air inlet pipe opening and the upper air outlet hole are arranged on the same vertical side plate of the rectangular frame body on the same side, the middle lower temperature measuring hole is used for measuring the heating temperature of the resin layer, the middle upper temperature measuring hole is used for measuring the heating temperature of the second bonding layer, the paperboard layer is arranged on the second bonding layer, and the structure reinforcing strips are inserted into the second bonding layer and the resin layer.
The further preferred technical scheme is as follows: the main heat insulation plate unit comprises two main rotating plates and a main rotating shaft, wherein the long edge directions of the two main rotating plates are perpendicular to the advancing direction of the composite aluminum foil main body, and the main rotating shaft is arranged on the side surface of each main rotating plate and used for being inserted into the C-shaped pipe body unit; the auxiliary heat insulation plate unit comprises two auxiliary rotating plates and an auxiliary rotating shaft, wherein the long edge directions of the two auxiliary rotating plates are perpendicular to the advancing direction of the composite aluminum foil main body, and the auxiliary rotating shaft is arranged on the side surfaces of the auxiliary rotating plates and used for being plugged on the C-shaped pipe body unit.
The further preferred technical scheme is as follows: the C-shaped pipe body unit comprises a vertical C-shaped pipe body, an elastic plate, a fixed plate, a pressing plate, a mounting groove and a fastening bolt, wherein the upper pipe body opening is aligned with the middle positions of the two auxiliary rotating plates, the lower pipe body opening is aligned with the middle positions of the two main rotating plates, the elastic plate is arranged on the side surface of the vertical C-shaped pipe body and used for clamping the inner side surface of the rectangular frame body, the fixed plate is arranged in the elastic plate and protrudes downwards and used for receiving the jacking force of the rotating pipe body unit, the pressing plate is arranged on the side surface of the lower end of the fixed plate and used for clamping the inner side surface of the rectangular frame body, the mounting groove is arranged on the side surface of a pipe orifice of the vertical C-shaped pipe body and used for inserting the main rotating shaft or the auxiliary rotating shaft, and the fastening bolt is arranged on the mounting groove and used for clamping the main rotating shaft or the auxiliary rotating shaft.
The further preferred technical scheme is as follows: the rotary cylinder unit comprises a threaded column arranged on the side face of the electric heating plate, an internal thread cylinder sleeved on the threaded column, a fixed cylinder sleeved on the internal thread cylinder, and an elastic block arranged on the end face of the fixed cylinder and used for pressing the inner side face of the rectangular frame body or the side face of the lower end of the fixed plate.
The invention has the following advantages: the first and the multiple layers of composite aluminum foil paper have reasonable and effective composite structure, the waterproof film layer can provide better steaming resistance, and the structural reinforcing strips can ensure enough structural strength; secondly, the single-side blowing type electric heater used in the production method can carry out common, adjustable and independent drying and curing operation on the second bonding layer and the resin layer, ensures that the structural reinforcing strip cannot be fixed at an excessively low position in the second bonding layer and the resin layer due to self gravity settlement, and ensures that the second bonding layer and the resin layer have self proper curing temperature and curing speed; third, unilateral blowing type electric heater has the advantage of unilateral heating, both sides stoving, and its internal structure stability is high, the dismouting maintenance degree of difficulty is moderate, and the stoving temperature of upper and lower both sides is nimble adjustable, and heat overall utilization is high.
Drawings
FIG. 1 is a schematic view of the structure of each layer of the multi-layer composite aluminum-foil paper of the present invention.
Fig. 2 is a schematic view showing a structure of a single side blowing type electric heater in the present invention.
Fig. 3 is a schematic structural view of an external frame unit according to the present invention.
Fig. 4 is a schematic view of the position structure of the main and sub heat insulation board units according to the present invention.
FIG. 5 is a schematic structural view of a C-shaped tubular unit according to the present invention.
Fig. 6 is a schematic view of the position structure of the rotary cylinder unit in the present invention.
Fig. 7 is a schematic view of the structure pattern with improper fixing position caused by excessive settlement of the structural reinforcing bars in the invention.
Detailed Description
The following description is only a preferred embodiment of the present invention and is not intended to limit the scope of the present invention.
Example (b): as shown in fig. 1-7, the steam-resistant multilayer composite aluminum-foil paper comprises a waterproof film layer a, a first bonding layer b, a paperboard layer c, a second bonding layer d, an aluminum foil layer e and a resin layer f from outside to inside, wherein structural reinforcing strips g are arranged in the second bonding layer d and the resin layer f.
In this embodiment, the waterproof film layer a is made of polyethylene, the first adhesive layer b and the second adhesive layer d are made of common glass cement or 602-butadiene-acrylonitrile rubber, the paperboard layer c is made of common printing paper, the resin layer f is made of PP laminating resin, the food safety is high, and the requirement of microwave oven heating is met, and finally the structural reinforcing strip g is made of conventional common lightweight aluminum, so that the lunch box made of the multilayer composite aluminum foil paper is guaranteed to have sufficient structural strength in the storage, transportation and use processes, and the multilayer composite aluminum foil paper lunch box is not easy to flatten and bend.
The thickness of the second bonding layer d is 0.03-0.06mm, the thickness of the resin layer f is 0.04-0.09mm, and the shape of the structure reinforcing strip g is a round line shape, and the diameter is 0.01-0.02 mm. The distance between the adjacent structural reinforcing strips g is 1.0-2.5 cm.
The first bonding layer b and the second bonding layer d are prepared in a coating mode, the coating speed is 20-30m/min, the resin layer f is prepared in a film spraying mode, the second bonding layer d and the resin layer f are dried together through a single-side air blowing type electric heater, and the second bonding layer d and the resin layer f are used for height limitation and fixation through a mode of adjusting the self curing speed of the second bonding layer d and the resin layer f. The drying temperature of the second bonding layer d is 40-55 ℃, and the drying temperature of the resin layer f is 52-75 ℃.
In this embodiment, the structural reinforcing strip g needs to be inserted before the second adhesive layer d and the resin layer f are completely cured to ensure that they can be fixedly mounted together, and if the curing speed of the second adhesive layer d is too slow, the structural reinforcing strip g will sink to the bottom in the second adhesive layer d and directly contact the aluminum foil layer e, so that the effective bonding area of the second adhesive layer d becomes small.
If the curing speed of the resin layer f is too slow, the structural reinforcing bars g may be settled down in the resin layer f or even partially expose the resin layer f, which not only may cause the resin layer f to be broken during use and affect the aesthetic appearance of the resin layer f, but also may cause the structural reinforcing bars g to directly contact food, which is unhygienic.
Therefore, both the second adhesive layer d and the resin layer f need a relatively fast and proper curing speed, i.e., a proper heating and drying temperature, in consideration of the proper curing speed of the second adhesive layer d and the resin layer f themselves and in consideration of avoiding excessive sedimentation of the structural reinforcing bars g, and the curing operation of the first adhesive layer b is out of the scope of the present invention, and the curing effect of the first adhesive layer b has little influence on the use of the multilayer aluminum foil composite even if an undesirable deviation occurs.
The structure of the single side blowing type electric heater includes: an outer frame unit 1 for penetrating a composite aluminum foil main body A, an electric heating plate 2 arranged in the outer frame unit 1 and positioned below the composite aluminum foil main body A, a main heat insulation plate unit 3 arranged between the composite aluminum foil main body A and the electric heating plate 2 and used for performing heat gathering type drying operation on the downward resin layer f, an auxiliary heat insulation plate unit 4 arranged between the composite aluminum foil main body A and a top plate of the outer frame unit 1 and used for performing heat gathering type drying operation on the upward second bonding layer d, a C-shaped pipe unit 5 arranged on the inner side surface of the outer frame unit 1 and used for performing vertical heat flow guiding between the main heat insulation plate unit 3 and the auxiliary heat insulation plate unit 4, and rotary cylinder units 6 respectively arranged at two ends of the electric heating plate 2 and used for jacking and fixing the inner side surface of the outer frame unit 1 and the C-shaped pipe unit 5, and an air inlet pipe 7 which is provided on the outer frame unit 1 and blows air in the order of the main heat insulation board unit 3, the C-shaped pipe unit 5, and the sub heat insulation board unit 4.
In this embodiment, the resin layer f requires a higher curing temperature and curing heat than the second adhesive layer d, so that the resin layer f directly receives the heating operation of the electric heating plate 2 downward, and the heat at the second adhesive layer d is derived from the hot wind blown from the air inlet pipe 7 among the main heat insulation board unit 3, the C-shaped pipe unit 5, and the sub heat insulation board unit 4 in this order, which allows the one-side blowing type electric heater to have at least the following advantages.
The first, single electric-heating plate 2 can heat the resin layer f facing downward and the second adhesive layer d facing upward together.
Secondly, the heating temperature intensity independent positions of the resin layer f and the second bonding layer d can obtain the self-optimum heating parameters so as to ensure that the structure reinforcing strips g in the respective interiors of the resin layer f and the second bonding layer d can be solidified and fixed at the proper positions, and the resin layer f and the second bonding layer d can be effectively solidified so as to avoid the problems of excessive solidification and self cracking.
Thirdly, the heat generated by the electric heating plate 2 is continuously used, and the heat utilization rate of the whole single-side blowing type electric heater is high.
The external frame unit 1 comprises a rectangular frame body 101 with openings at two ends, and a lower air inlet pipe opening 102, an upper air outlet hole 103, a middle and lower temperature measuring hole 104 for measuring the heating temperature of the resin layer f, and a middle and upper temperature measuring hole 105 for measuring the heating temperature of the second bonding layer d which are arranged on the same side plate of the rectangular frame body 101, wherein the paperboard layer c is arranged on the second bonding layer d, and the structure reinforcing strips g are inserted into the second bonding layer d and the resin layer f.
In this embodiment, a conventional common infrared temperature detector is inserted into the middle lower temperature measurement hole 104 and the middle upper temperature measurement hole 105, and is used to specifically measure the specific curing temperature of the resin layer f and the second adhesive layer d during the curing process, and the heat adjustment degree of the main insulation board unit 3 and the auxiliary insulation board unit 4 is adjusted and controlled according to this temperature signal.
The main heat insulation board unit 3 comprises two main rotating boards 301 with long side directions perpendicular to the advancing direction of the composite aluminum foil main body a, and a main rotating shaft 302 which is arranged on the side surface of each main rotating board 301 and is used for being inserted into the C-shaped pipe unit 5; the auxiliary heat insulation board unit 4 comprises two auxiliary rotating boards 401 with the long side directions perpendicular to the advancing direction of the composite aluminum foil main body a, and an auxiliary rotating shaft 402 which is arranged on the side surface of the auxiliary rotating board 401 and is used for being inserted into the C-shaped pipe unit 5.
In this embodiment, when the upper ends of the two main rotating plates 301 are gathered together, the resin layer f has a relatively high heating and drying temperature, and otherwise, the upper ends of the two main rotating plates are separated, the resin layer f can obtain a relatively low heating temperature, and similarly, the using method of the auxiliary rotating plate 401 is also the same, and the distance between the lower end edges of the two auxiliary rotating plates 401 is inversely related to the heating temperature of the second adhesive layer d.
It should be noted that the heat loss and the variation of the heat loss caused by the gaps between the upper, lower, left and right sides of the main rotating plate 301 and the sub rotating plate 401 and the inner side of the aluminum foil composite main body a or the outer frame unit 1 are relatively small and do not need to be considered.
The C-shaped pipe unit 5 comprises a vertical C-shaped pipe body 501 having an upper pipe opening aligned with the middle position of the two sub rotating plates 401, a lower pipe opening aligned with the middle position of the two main rotating plates 301 and arranged on the inner side of the rectangular frame 101, an elastic plate 502 arranged on the side of the vertical C-shaped pipe body 501 and used for clamping the inner side of the rectangular frame 101, a fixing plate 503 arranged in the elastic plate 502 and protruding downwards and used for receiving the jacking force of the rotating cylinder unit 6, a pressing plate 504 arranged on the lower end side of the fixing plate 503 and used for clamping the inner side of the rectangular frame 101, and an installation groove 505 arranged on the pipe orifice side of the vertical C-shaped pipe body 501 and used for inserting the main rotating shaft 302 or the sub rotating shaft 402, and a fastening bolt 506 provided on the mounting groove 505 and clamping the main rotating shaft 302 or the sub rotating shaft 402.
In this embodiment, the C-shaped pipe unit 5 is movably mounted on the inner side surface of the rectangular frame 101 by the pressing action of the rotary cylinder unit 6, so that the C-shaped pipe unit has the advantage of being convenient to disassemble, assemble and maintain, and hot air enters from the lower opening of the vertical C-shaped pipe body 501 and flows out from the upper opening, so that sufficient heat is ensured to be provided between the main rotary plate 301 and between the auxiliary rotary plates 401.
Furthermore, the elastic plate 502 has two functions: firstly, the vertical C-shaped pipe body 501 is made of metal and has strong thermal conductivity, so the elastic plate 502 made of common heat-resistant rubber is arranged, and a good effect of reducing heat loss can be achieved between the vertical C-shaped pipe body 501 and the side plate of the rectangular frame 101; secondly, the elastic plate 502 is used for ensuring that a higher anti-slip and anti-dropping effect is achieved between the vertical C-shaped pipe body 501 and the side plates of the rectangular frame 101.
Finally, the angle of the main rotating shaft 302 or the sub rotating shaft 402 can be adjusted freely on the mounting groove 505 to obtain a flexible heat gathering effect, and the fastening bolt 506 is used for fixing the adjusted angles of the main rotating plate 301 and the sub rotating plate 401.
In this embodiment, the main rotating plate 301 and the sub rotating plate 401 are made of conventional heat insulating materials, such as asbestos plate and heat insulating foam plate.
The rotary cylinder unit 6 includes a threaded column 601 disposed on a side surface of the electric heating plate 2, an internal threaded cylinder 602 sleeved on the threaded column 601, a fixed cylinder 603 sleeved on the internal threaded cylinder 602, and an elastic block 604 disposed on an end surface of the fixed cylinder 603 and configured to press an inner side surface of the rectangular frame 101 or a lower end side surface of the fixed plate 503.
In this embodiment, the fixed cylinder 603 and the elastic block 604 are fixed on the inner side of the rectangular frame 101 or the lower end side of the fixed plate 503, because the elastic block 604 has a large static friction force, when the extension of the rotary cylinder unit 6 needs to be adjusted, the internally threaded cylinder 602 needs to be rotated, so that the internally threaded cylinder 602 can smoothly jack up the fixed cylinder 603.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various modifications can be made within the knowledge of those skilled in the art without departing from the gist of the present invention. These are non-inventive modifications, which are intended to be protected by patent laws within the scope of the claims appended hereto.

Claims (10)

1. The utility model provides a resistant compound aluminium foil paper of multilayer who cooks, its characterized in that includes from outer waterproof rete (a), first tie coat (b), cardboard layer (c), second tie coat (d), aluminium foil layer (e) and resin layer (f) to interior, all be equipped with structure in second tie coat (d) and resin layer (f) and strengthen strip (g).
2. The steam-resistant multilayer composite aluminum-foil paper as claimed in claim 1, wherein: the thickness of the second bonding layer (d) is 0.03-0.06mm, the thickness of the resin layer (f) is 0.04-0.09mm, and the shape of the structural reinforcing strip (g) is a round line shape with the diameter of 0.01-0.02 mm.
3. The steam-resistant multilayer composite aluminum-foil paper as claimed in claim 1, wherein: the distance between the adjacent structural reinforcing strips (g) is 1.0-2.5 cm.
4. A method of producing a retortable multi-layer composite aluminum-foil paper as claimed in claim 1, wherein: the first bonding layer (b) and the second bonding layer (d) are coated and prepared, the coating speed is 20-30m/min, the resin layer (f) is coated and prepared, the second bonding layer (d) and the resin layer (f) are dried together through a single-side air blowing type electric heater, and the second bonding layer (d) and the resin layer (f) are fixed by height limitation in a mode of adjusting the self curing speed.
5. The method for producing the steam-resistant multilayer composite aluminum-foil paper as claimed in claim 4, wherein the method comprises the following steps: the drying temperature of the second bonding layer (d) is 40-55 ℃, and the drying temperature of the resin layer (f) is 52-75 ℃.
6. The method for producing a steam-resistant multilayer composite aluminum-foil paper as claimed in claim 4, wherein the structure of the single-side blowing type electric heater comprises: an external frame unit (1) used for penetrating a composite aluminum foil main body (A), an electric heating plate (2) arranged in the external frame unit (1) and positioned below the composite aluminum foil main body (A), a main heat insulation plate unit (3) arranged between the composite aluminum foil main body (A) and the electric heating plate (2) and used for carrying out heat gathering type drying operation on a downward resin layer (f), an auxiliary heat insulation plate unit (4) arranged between the composite aluminum foil main body (A) and a top plate of the external frame unit (1) and used for carrying out heat gathering type drying operation on an upward second bonding layer (d), a C-shaped pipe unit (5) arranged on the inner side surface of the external frame unit (1) and used for carrying out vertical heat diversion between the main heat insulation plate unit (3) and the auxiliary heat insulation plate unit (4), the hot-air heating device comprises rotary barrel units (6) and air inlet pipes (7), wherein the rotary barrel units (6) are arranged at two ends of an electric heating plate (2) respectively and used for jacking and fixing the inner side surface of an external frame unit (1) and a C-shaped barrel unit (5), and the air inlet pipes (7) are arranged on the external frame unit (1) and sequentially blow air according to the sequence of a main heat insulation plate unit (3), the C-shaped barrel unit (5) and an auxiliary heat insulation plate unit (4).
7. The method for producing the steam-resistant multilayer composite aluminum-foil paper as claimed in claim 6, wherein the method comprises the following steps: the outer frame unit (1) comprises a rectangular frame body (101) with two open ends, a lower air inlet pipe opening (102) and an upper air outlet hole (103) which are arranged on the same vertical side plate of the rectangular frame body (101), a middle lower temperature measuring hole (104) used for measuring the heating temperature of the resin layer (f), and a middle upper temperature measuring hole (105) used for measuring the heating temperature of the second bonding layer (d), wherein the paperboard layer (c) is arranged on the second bonding layer (d), and the structure reinforcing strips (g) are inserted into the second bonding layer (d) and the resin layer (f).
8. The method for producing a steam-resistant multilayer composite aluminum-foil paper as claimed in claim 7, wherein: the main heat insulation plate unit (3) comprises two main rotating plates (301) with the long side directions perpendicular to the advancing direction of the composite aluminum foil main body (A), and a main rotating shaft (302) which is arranged on the side surface of each main rotating plate (301) and is used for being inserted into the C-shaped pipe body unit (5); the auxiliary heat insulation plate unit (4) comprises two auxiliary rotating plates (401) with the long side directions perpendicular to the advancing direction of the composite aluminum foil main body (A), and an auxiliary rotating shaft (402) which is arranged on the side surface of each auxiliary rotating plate (401) and used for being inserted into the C-shaped pipe body unit (5).
9. The method for producing a steam-resistant multilayer composite aluminum-foil paper as claimed in claim 8, wherein: the C-shaped pipe body unit (5) comprises a vertical C-shaped pipe body (501) with an upper pipe body opening aligned with the middle position of the two auxiliary rotating plates (401), a lower pipe body opening aligned with the middle position of the two main rotating plates (301) and arranged on the inner side surface of the rectangular frame body (101), an elastic plate (502) arranged on the side surface of the vertical C-shaped pipe body (501) and used for clamping the inner side surface of the rectangular frame body (101), a fixing plate (503) arranged in the elastic plate (502) and protruding downwards and used for receiving the jacking force of the rotating cylinder body unit (6), a pressing plate (504) arranged on the side surface of the lower end of the fixing plate (503) and used for clamping the inner side surface of the rectangular frame body (101), and a mounting groove (505) arranged on the side surface pipe opening of the vertical C-shaped pipe body (501) and used for being inserted into the main rotating shaft (302) or the auxiliary rotating shaft (402), and a fastening bolt (506) provided on the mounting groove (505) and clamping the main rotating shaft (302) or the sub rotating shaft (402).
10. The method for producing a retortable multilayer composite aluminum-foil paper as claimed in claim 9, wherein: the rotary cylinder unit (6) comprises a threaded column (601) arranged on the side face of the electric heating plate (2), an internal thread cylinder (602) sleeved on the threaded column (601), a fixed cylinder (603) sleeved on the internal thread cylinder (602), and an elastic block (604) arranged on the end face of the fixed cylinder (603) and used for pressing the inner side face of the rectangular frame body (101) or the side face of the lower end of the fixed plate (503).
CN202110793784.8A 2021-07-14 2021-07-14 Steaming-resistant multi-layer composite aluminum foil paper and production method thereof Active CN113561606B (en)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102922820A (en) * 2012-11-12 2013-02-13 杭州顶正包材有限公司 Low basis weight and high barrier property multilayer composite membrane and manufacturing process thereof
CN205310951U (en) * 2015-11-12 2016-06-15 常州沃信能源科技有限公司 Composite metal material structure
CN205781466U (en) * 2016-05-31 2016-12-07 嘉兴市金阳塑胶管业有限公司 A kind of anti-breaking formula is with the plain weave pipe of self-protection
CN208035604U (en) * 2018-06-19 2018-11-02 浙江青蓝新材料科技有限公司 High intensity anti-medium composite membrane
CN111924329A (en) * 2020-07-16 2020-11-13 灵璧县亨哼食品有限公司 Food packaging film

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102922820A (en) * 2012-11-12 2013-02-13 杭州顶正包材有限公司 Low basis weight and high barrier property multilayer composite membrane and manufacturing process thereof
CN205310951U (en) * 2015-11-12 2016-06-15 常州沃信能源科技有限公司 Composite metal material structure
CN205781466U (en) * 2016-05-31 2016-12-07 嘉兴市金阳塑胶管业有限公司 A kind of anti-breaking formula is with the plain weave pipe of self-protection
CN208035604U (en) * 2018-06-19 2018-11-02 浙江青蓝新材料科技有限公司 High intensity anti-medium composite membrane
CN111924329A (en) * 2020-07-16 2020-11-13 灵璧县亨哼食品有限公司 Food packaging film

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