CN113561606B - Steaming-resistant multi-layer composite aluminum foil paper and production method thereof - Google Patents

Steaming-resistant multi-layer composite aluminum foil paper and production method thereof Download PDF

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Publication number
CN113561606B
CN113561606B CN202110793784.8A CN202110793784A CN113561606B CN 113561606 B CN113561606 B CN 113561606B CN 202110793784 A CN202110793784 A CN 202110793784A CN 113561606 B CN113561606 B CN 113561606B
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layer
aluminum foil
unit
composite aluminum
foil paper
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CN113561606A (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 utility model 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 utility model provides a steaming-resistant multi-layer composite aluminum foil paper, which can achieve the purposes of steaming resistance and high structural strength of a cutlery box made of the multi-layer composite aluminum foil paper by sequentially arranging a waterproof film layer, a first bonding layer, a paperboard layer, a second bonding layer, an aluminum foil layer and a resin layer from outside to inside and arranging structural reinforcing strips in the second bonding layer and the resin layer. The utility model also provides a production method of the steaming-resistant multi-layer composite aluminum foil paper, which can achieve the purposes of reasonable and effective fixing positions of the structural reinforcing strips and simple and efficient whole production method by adopting a single-side blowing type electric heater to jointly, independently and adjustably dry and solidify the second bonding layer and the resin layer.

Description

Steaming-resistant multi-layer composite aluminum foil paper and production method thereof
Technical Field
The utility model 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
Aluminum foil paper refers to a packaging material with an aluminum foil main structure, is commonly used in the field of food packaging, and is a food cutlery box which can be heated, such as an airplane meal. Because of the application requirement, aluminum foil paper is required to have the characteristic of steaming resistance, and is matched with the specific application environment requirement, namely, a single aluminum foil layer cannot meet the requirement, so that the composite aluminum foil material is formed.
The prior 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 decorating, 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 affected.
However, in the production and use process of the existing composite aluminum foil paper, a few problems are found to exist: the structure strength of the cutlery box made of the first and the existing compound aluminum foil paper is insufficient, the cutlery box is flattened when being subjected to relatively small pressure, and if the cutlery box is unfolded again for use, the indentation is easier 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 components for reinforcing the structural strength of the composite aluminum foil paper cutlery box are introduced, the requirement on the heating and curing operation is higher, which cannot be met by the existing common heating equipment.
In view of the foregoing, there is a need for a composite aluminum foil paper with structural reinforcement members, and a complete set of composite aluminum foil paper manufacturing methods and apparatus that can efficiently process and position the reinforcement members.
The Chinese patent publication No. CN208881269U, publication No. 2019.05.21 discloses an aluminum foil composite paper capable of being heated by an electromagnetic oven, which comprises a printing layer, a food-grade paper board, a glue layer, an aluminum foil layer and a PP film coating layer, wherein the smooth surface of the food-grade paper board is provided with the printing layer, the other surface of the food-grade paper board is provided with the aluminum foil, the aluminum foil layer and the food-grade paper board are adhered through the glue layer, the other surface of the aluminum foil layer is provided with the PP film coating layer, and the thickness of the aluminum foil layer is 0.005-0.01mm.
However, the aluminum foil composite paper in the patent of the utility model is far from sufficient because the structural strength of the cutlery box is mainly dependent on the aluminum foil layer after the cutlery box is manufactured, and the cutlery box is easy to bend and collapse in the use process.
In addition, patent publication number is CN 210759766U, the chinese utility model patent of publication day 2020.06.16 discloses a drying device for paper product printing, which comprises a housin, the stoving room, the stoving roller, paper, between the cooling, infrared heating pipe has all been inlayed to both sides face and the bottom surface between the stoving, the top of breathing pipe runs through the casing and fixedly connected with high-pressure fan, the inside of stoving roller is inlayed and is had the heating rod, the gas pocket has evenly been seted up on the surface of heating rod, it has water absorbent resin to inlay between the gas pocket, the upper and lower both ends of between the cooling are all fixedly connected with cooling fan, 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 paper receiving cylinder.
However, the drying device in the patent of the utility model cannot jointly dry the two sides, the whole drying speed is insufficient, the drying operation is not comprehensive enough, when the device is applied to glue or resin layers to be dried containing reinforcing components, the problem of sedimentation of the reinforcing components can be caused by insufficient drying speed, the positions of the reinforcing components are deviated, and finally the structural strength of the reinforcing components on the aluminum foil composite paper is not obviously improved.
Disclosure of Invention
The utility model provides a steaming-resistant multi-layer composite aluminum foil paper, which can achieve the purposes of steaming resistance and high structural strength of a cutlery box made of the multi-layer composite aluminum foil paper by sequentially arranging a waterproof film layer, a first bonding layer, a paperboard layer, a second bonding layer, an aluminum foil layer and a resin layer from outside to inside and arranging structural reinforcing strips in the second bonding layer and the resin layer.
The utility model also provides a production method of the steaming-resistant multi-layer composite aluminum foil paper, which can achieve the purposes of reasonable and effective fixing positions of the structural reinforcing strips and simple and efficient whole production method by adopting a single-side blowing type electric heater to jointly and adjustably dry and solidify the second bonding layer and the resin layer.
The utility model adopts the technical proposal that: the utility model provides a resistant multilayer composite aluminum foil paper that cooks, includes waterproof membrane layer, first tie coat, cardboard layer, second tie coat, aluminium foil layer and resin layer from outside to inside, all be equipped with the structural reinforcement strip in second tie coat and the resin layer.
The further preferable 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 structural reinforcing strip is round line shape, and the diameter is 0.01-0.02mm.
The further preferable technical scheme is as follows: the spacing between adjacent structural reinforcing bars is 1.0-2.5cm.
The utility model provides a production method of resistant multilayer composite aluminum foil paper that cooks, first tie coat and second tie coat coating preparation, coating speed is 20-30m/min, resin layer drenches the membrane preparation, the second tie coat with the resin layer carries out the common stoving through unilateral blowing electric heater, second tie coat and resin layer are through the mode of adjusting self solidification speed in order to be used for limiting the height and fix the structure reinforcing strip.
The further preferable 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 ℃.
Further preferable technical scheme is that the structure of the single-side blowing type electric heater comprises: the heat-insulating plate comprises an outer frame body unit used for penetrating through a composite aluminum foil main body, an electric heating plate arranged in the outer frame body unit and located below the composite aluminum foil main body, a main heat-insulating plate unit arranged between the composite aluminum foil main body and the electric heating plate and used for conducting heat gathering type drying operation on a downward resin layer, a secondary heat-insulating plate unit arranged between the composite aluminum foil main body and a top plate of the outer frame body unit and used for conducting heat gathering type drying operation on an upward second bonding layer, a C-shaped pipe body unit arranged on the inner side surface of the outer frame body unit and used for conducting vertical heat conduction between the main heat-insulating plate unit and the secondary heat-insulating plate unit, and a rotary cylinder body unit arranged at two ends of the electric heating plate and used for jacking and fixing the inner side surface of the outer frame body unit and the C-shaped pipe body unit, and a heat-inlet pipe arranged on the outer frame body unit and sequentially used for blowing the main unit, the C-shaped pipe body unit and the secondary heat-insulating plate unit.
The further preferable technical scheme is as follows: the external frame unit comprises a rectangular frame with two openings at two ends, and a lower air inlet pipe opening hole, an upper air outlet hole, a middle lower temperature measuring hole for measuring the heating temperature of the resin layer and an upper temperature measuring hole for measuring the heating temperature of the second bonding layer which are arranged on the vertical side plate at the same side of the rectangular frame, wherein the paper plate layer is arranged on the second bonding layer, and the structural reinforcing strip is inserted into the second bonding layer and the resin layer.
The further preferable technical scheme is as follows: the main heat insulation plate unit comprises two main rotating plates with the long side direction perpendicular to the advancing direction of the composite aluminum foil main body and main rotating shafts which are arranged on the side surfaces of the main rotating plates and are used for being spliced on the C-shaped pipe body unit; the auxiliary heat insulation plate unit comprises two auxiliary rotating plates with the long side direction perpendicular to the advancing direction of the composite aluminum foil main body and auxiliary rotating shafts which are arranged on the side surfaces of the auxiliary rotating plates and are used for being spliced on the C-shaped pipe body unit.
The further preferable technical scheme is as follows: the C-shaped pipe body unit comprises an upper pipe body opening aligned with two auxiliary rotating plate middle positions, a lower pipe body opening aligned with two main rotating plate middle positions, a vertical C-shaped pipe body arranged on the inner side surface of the rectangular frame body, an elastic plate 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, a fixing plate arranged in the elastic plate and protruding downwards and used for receiving jacking force of the rotating cylinder body unit, a pressing plate arranged on the side surface of the lower end of the fixing plate and used for clamping the inner side surface of the rectangular frame body, a mounting groove 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 a fastening bolt arranged on the mounting groove and used for clamping the main rotating shaft or the auxiliary rotating shaft.
The further preferable technical scheme is as follows: the rotary cylinder unit comprises a threaded column arranged on the side surface of the electric heating plate, an internal threaded cylinder sleeved on the threaded column, a fixed cylinder sleeved on the internal threaded cylinder, and an elastic block arranged on the end surface of the fixed cylinder and used for pressing the inner side surface of the rectangular frame body or the side surface of the lower end of the fixed plate.
The utility model has the following advantages: the composite structure of each layer of the first and the multi-layer composite aluminum foil paper is reasonable and effective, the waterproof film layer can provide better steaming and boiling resistance, and the structural reinforcing strip can ensure enough structural strength; the single-side blowing type electric heater used in the second production method can carry out common, adjustable and independent drying and curing operation on the second bonding layer and the resin layer, so that the structural reinforcing strip is ensured not to be fixed at an excessively low position in the second bonding layer and the resin layer due to self gravity sedimentation, and the second bonding layer and the resin layer are ensured to have self-proper curing temperature and curing speed; third, unilateral blowing formula electric heater has unilateral heating, the advantage of 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 the whole high-usage of heat.
Drawings
Fig. 1 is a schematic diagram of the structure of each layer of the multi-layer composite aluminum foil paper.
Fig. 2 is a schematic structural diagram of a single-side blowing electric heater according to the present utility model.
Fig. 3 is a schematic structural view of an external frame unit in the present utility model.
FIG. 4 is a schematic view showing the position structure of the main heat insulating board unit and the auxiliary heat insulating board unit in the present utility model.
Fig. 5 is a schematic structural view of a C-shaped pipe unit according to the present utility model.
Fig. 6 is a schematic view showing the position structure of the rotary cylinder unit according to the present utility model.
FIG. 7 is a schematic illustration of the improper structural style of the fixing position caused by excessive settlement of the structural reinforcement strips in the present utility model.
Detailed Description
The following description is of the preferred embodiments of the utility model and is not intended to limit the scope of the utility model.
Examples: as shown in the accompanying drawings 1-7, the steaming-resistant multi-layer 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 material of the waterproof film layer a is polyethylene, the first adhesive layer b and the second adhesive layer d are composed of common glass cement or 602 nitrile rubber, the cardboard layer c is common printing paper, the material of the resin layer f is PP laminating resin, the food safety is higher, the heating requirement of the microwave oven is met, and finally the material of the structural reinforcing strip g is common light aluminum, so that the cutlery box made of the multi-layer composite aluminum foil paper is ensured to have enough structural strength in the storage, transportation and use processes, and the multi-layer composite aluminum foil paper cutlery box is not easy to be flattened and bent.
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, the shape of the structural reinforcing strip g is a round wire shape, and the diameter of the structural reinforcing strip g is 0.01-0.02mm. The spacing between adjacent structural reinforcing bars g is 1.0-2.5cm.
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 blowing type electric heater, and the second bonding layer d and the resin layer f are used for limiting height and fixing the structural reinforcing strip g through a mode of adjusting the self-curing speed. 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 reinforcement bar g needs to be inserted before the second adhesive layer d and the resin layer f are completely cured to ensure that the structural reinforcement bar can be fixedly installed together, and if the curing speed of the second adhesive layer d is too slow, the structural reinforcement bar g can be settled to the bottom in the second adhesive layer d and directly contact the aluminum foil layer e, so that the effective adhesive area of the second adhesive layer d is reduced.
Whereas if the curing speed of the resin layer f is too slow, the structural reinforcing bars g may be settled to the bottom within the resin layer f, even partially exposing the resin layer f, which may not only cause the resin layer f to crack during use, but also affect the beauty of the resin layer f, even the structural reinforcing bars g may directly contact food, which is unhygienic.
Therefore, both the second adhesive layer d and the resin layer f need to be cured at a relatively high and suitable speed, i.e., at a suitable heating and drying temperature, in view of suitable curing speeds of the second adhesive layer d and the resin layer f themselves or avoiding excessive settlement of the structural reinforcing bars g, and of course, the curing operation of the first adhesive layer b is out of the range of the present utility model, and even if undesirable deviation occurs in the curing effect of the first adhesive layer b, the use of the multi-layer aluminum-clad composite paper is not greatly affected.
The structure of the unilateral blowing type electric heater comprises: the heat-insulating plate comprises an outer frame body unit 1 used for penetrating through a composite aluminum foil main body A, an electric heating plate 2 arranged in the outer frame body unit 1 and positioned below the composite aluminum foil main body A, a main heat-insulating 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, a secondary heat-insulating plate unit 4 arranged between the composite aluminum foil main body A and a top plate of the outer frame body unit 1 and used for carrying out heat gathering type drying operation on an upward second bonding layer d, a C-shaped pipe body unit 5 arranged on the inner side surface of the outer frame body unit 1 and used for carrying out vertical heat conduction between the main heat-insulating plate unit 3 and the secondary heat-insulating plate unit 4, a rotary cylinder body unit 6 respectively arranged at two ends of the electric heating plate 2 and used for carrying out jacking fixing on the inner side surface of the outer frame body unit 1 and the C-shaped pipe body unit 5, and an air inlet pipe 7 arranged on the outer frame body unit 1 and sequentially used for carrying out blowing heat-insulating plates according to the sequence of the main unit 3, the C-shaped pipe body unit 5 and the secondary heat-insulating plate 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 panel 2 downward, and the heat at the second adhesive layer d is derived from hot air blown from the air inlet duct 7 between the main heat insulation panel unit 3, the C-shaped duct body unit 5 and the sub heat insulation panel unit 4 in this order, which results in the single side blowing type electric heater having at least the following advantages.
The first, single electric heating plate 2 may heat the resin layer f facing downward and the second adhesive layer d facing upward together.
And the second, the independent positions of the heating temperature intensity of the resin layer f and the second bonding layer d can obtain the optimum heating parameters of the two, so that the structural reinforcing strips g in the two can be cured and fixed at the proper positions, the two can be effectively cured, and the problems of excessive curing and self cracking are avoided.
Third, 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 101 with two open ends, a lower air inlet pipe opening 102, an upper air outlet 103, a middle lower temperature measuring hole 104 for measuring the heating temperature of the resin layer f and a middle upper temperature measuring hole 105 for measuring the heating temperature of a second bonding layer d, wherein the rectangular frame 101 is arranged on the vertical side plate on the same side of the rectangular frame 101, the second bonding layer d and the resin layer f are respectively provided with a paperboard layer c, and the structural reinforcing strip g is inserted into the second bonding layer d and the resin layer f.
In this embodiment, the middle lower temperature measuring hole 104 and the middle upper temperature measuring hole 105 are inserted into the conventional common infrared temperature detectors, so as to measure the specific curing temperatures of the resin layer f and the second adhesive layer d in the curing process, and the heat adjustment degree of the main heat insulation board unit 3 and the auxiliary heat insulation board unit 4 is controlled by the temperature signals.
The main heat insulation board unit 3 comprises two main rotating boards 301 with the long side direction 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 the main rotating board 301 and is used for being spliced on the C-shaped pipe body unit 5; the secondary heat insulating board unit 4 includes two secondary rotating boards 401 having a long side direction perpendicular to the advancing direction of the composite aluminum foil body a, and a secondary rotating shaft 402 provided on the side of the secondary rotating boards 401 and for plugging on the C-shaped pipe body unit 5.
In this embodiment, when the upper ends of the two main rotating plates 301 are gathered, the resin layer f has a relatively high heating and drying temperature, whereas when the upper ends are separated, the resin layer f can obtain a relatively low heating temperature, and similarly, the use 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 opposite to the heating temperature of the second adhesive layer d.
It should be noted that, the heat loss and the change of the loss amount caused by the gaps between the upper, lower, left and right sides of the main rotary plate 301 and the auxiliary rotary plate 401 and the inner side surface of the composite aluminum foil body a or the outer frame unit 1 are relatively small, and do not need to be considered.
The C-shaped pipe body unit 5 includes a vertical C-shaped pipe body 501 having upper pipe body openings aligned with the middle positions of the two sub-rotating plates 401 and lower pipe body openings aligned with the middle positions of the two main rotating plates 301 and provided on the inner side of the rectangular frame 101, an elastic plate 502 provided 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 provided in the elastic plate 502 and protruding downward and used for receiving the jacking force of the rotary cylinder unit 6, a pressing plate 504 provided on the lower end side of the fixing plate 503 and used for clamping the inner side of the rectangular frame 101, a mounting groove 505 provided 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 used for clamping the main rotating shaft 302 or the sub-rotating shaft 402.
In this embodiment, the C-shaped tube unit 5 is movably mounted on the inner side surface of the rectangular frame 101 under the compression action of the rotary cylinder unit 6, so that the apparatus has the advantage of convenient disassembly and maintenance, and hot air enters from the lower opening and flows out from the upper opening of the vertical C-shaped tube main body 501, so that sufficient heat is ensured between the main rotary plates 301 and between the auxiliary rotary plates 401.
Furthermore, the elastic plate 502 has two functions: the first vertical C-shaped pipe main body 501 is made of metal, and has strong thermal conductivity, so that 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 main body 501 and the side plate of the rectangular frame 101; second, the elastic plate 502 is used for ensuring that the vertical C-shaped pipe main body 501 and the side plate of the rectangular frame 101 have a higher anti-slip and anti-drop effect.
Finally, the main rotation shaft 302 or the auxiliary rotation shaft 402 may be optionally adjusted in angle on the mounting groove 505 to obtain a flexible heat gathering effect, and the fastening bolt 506 is used to fix the adjusted angles of the main rotation plate 301 and the auxiliary rotation plate 401.
In this embodiment, the main rotating plate 301 and the auxiliary rotating plate 401 are made of conventional heat insulating materials, such as asbestos plates and heat insulating foam plates.
The rotary cylinder unit 6 comprises a threaded column 601 arranged on the 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 arranged on the end surface of the fixed cylinder 603 and used for pressing the inner side surface of the rectangular frame 101 or the side surface of the lower end of the fixed plate 503.
In this embodiment, the fixed cylinder 603 is fixed on the inner side of the rectangular frame 101 or the lower side of the fixed plate 503 together with the elastic block 604, and the elastic block 604 has a large static friction force, so that when the elongation of the rotary cylinder unit 6 needs to be adjusted, the female screw cylinder 602 needs to be rotated, and the female screw cylinder 602 can smoothly jack up the fixed cylinder 603.
The embodiments of the present utility model have been described in detail with reference to the drawings, but the present utility model is not limited to the above embodiments, and various modifications may be made within the knowledge of those skilled in the art without departing from the spirit of the present utility model. These are all non-inventive modifications which are intended to be protected by the patent laws within the scope of the appended claims.

Claims (4)

1. A production method of steaming-resistant multilayer composite aluminum foil paper is characterized by comprising the following steps: the multi-layer 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),
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 blowing type electric heater, the second bonding layer (d) and the resin layer (f) are used for limiting the height and fixing the structural reinforcing strip (g) in a mode of adjusting the self-curing speed,
the structure of the unilateral blowing type electric heater comprises: an outer frame unit (1) for passing through the multi-layer composite aluminum foil paper, an electric heating plate (2) arranged in the outer frame unit (1) and positioned below the multi-layer composite aluminum foil paper, a main heat insulation plate unit (3) arranged between the multi-layer composite aluminum foil paper and the electric heating plate (2) and used for carrying out heat gathering type drying operation on a downward resin layer (f), a secondary heat insulation plate unit (4) arranged between the multi-layer composite aluminum foil paper and a top plate of the outer frame unit (1) and used for carrying out heat gathering type drying operation on an upward second bonding layer (d), a C-shaped pipe body unit (5) arranged on the inner side surface of the outer frame unit (1) and used for carrying out vertical heat conduction between the main heat insulation plate unit (3) and the secondary heat insulation plate unit (4), a rotary cylinder (6) respectively arranged at two ends of the electric heating plate (2) and used for carrying out jacking fixing on the inner side surface of the outer frame unit (1) and the C-shaped pipe body unit (5), and a secondary air inlet pipe unit (7) arranged on the outer frame unit (1) and the main heat insulation plate unit (4) in sequence,
the external frame body unit (1) comprises a rectangular frame body (101) with two open ends, a lower air inlet pipe opening (102), an upper air outlet hole (103), a middle lower temperature measuring hole (104) for measuring the heating temperature of the resin layer (f) and a middle upper temperature measuring hole (105) for measuring the heating temperature of the second bonding layer (d), wherein the paperboard layer (c) is arranged on the second bonding layer (d), the structural reinforcing strips (g) are inserted into the second bonding layer (d) and the resin layer (f),
the main heat insulation board unit (3) comprises two main rotating boards (301) with the long side direction perpendicular to the advancing direction of the multi-layer composite aluminum foil paper, and a main rotating shaft (302) which is arranged on the side surface of the main rotating boards (301) and is used for being spliced on the C-shaped pipe body unit (5); the auxiliary heat insulation board unit (4) comprises two auxiliary rotating boards (401) with the long side direction perpendicular to the advancing direction of the multi-layer composite aluminum foil paper, and auxiliary rotating shafts (402) which are arranged on the side surfaces of the auxiliary rotating boards (401) and are used for being spliced on the C-shaped pipe body unit (5).
2. The method for producing the steaming-resistant multi-layer composite aluminum foil paper according to claim 1, which is characterized in that: the drying temperature of the second bonding layer (d) is 40-55 ℃, and the drying temperature of the resin layer (f) is 52-75 ℃.
3. The method for producing the steaming-resistant multi-layer composite aluminum foil paper according to claim 1, which is characterized in that: the C-shaped pipe body unit (5) comprises a vertical C-shaped pipe body (501) with an upper pipe body opening aligned with two auxiliary rotating plates (401) in the middle, a lower pipe body opening aligned with two main rotating plates (301) in the middle 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 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), a mounting groove (505) arranged on the side surface of the pipe orifice of the vertical C-shaped pipe body (501) and used for inserting the main rotating shaft (302) or the auxiliary rotating shaft (402), and a fastening bolt (506) arranged on the mounting groove (505) and used for clamping the main rotating shaft (302) or the auxiliary rotating shaft (402).
4. A method for producing a retort resistant multi-layer aluminum foil composite paper according to claim 3, characterized in that: the rotary cylinder unit (6) comprises a threaded column (601) arranged on the 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) arranged on the end surface of the fixed cylinder (603) and used for pressing the inner side surface of the rectangular frame body (101) or the side surface 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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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
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