CN112537034A - Process for coating EPE pearl wool in aluminum foil bag - Google Patents

Process for coating EPE pearl wool in aluminum foil bag Download PDF

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Publication number
CN112537034A
CN112537034A CN202011314026.5A CN202011314026A CN112537034A CN 112537034 A CN112537034 A CN 112537034A CN 202011314026 A CN202011314026 A CN 202011314026A CN 112537034 A CN112537034 A CN 112537034A
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CN
China
Prior art keywords
base material
aluminum foil
epe pearl
coating
foil bag
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Granted
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CN202011314026.5A
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Chinese (zh)
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CN112537034B (en
Inventor
崔海顺
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Suzhou Yunshun New Type Packaging Co ltd
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Suzhou Yunshun New Type Packaging Co ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
    • B29C65/4805—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding characterised by the type of adhesives
    • B29C65/481—Non-reactive adhesives, e.g. physically hardening adhesives
    • B29C65/4815—Hot melt adhesives, e.g. thermoplastic adhesives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/02—Preparation of the material, in the area to be joined, prior to joining or welding
    • B29C66/022—Mechanical pre-treatments, e.g. reshaping
    • B29C66/0222—Mechanical pre-treatments, e.g. reshaping without removal of material, e.g. cleaning by air blowing or using brushes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/02—Preparation of the material, in the area to be joined, prior to joining or welding
    • B29C66/024—Thermal pre-treatments
    • B29C66/0242—Heating, or preheating, e.g. drying
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/03—After-treatments in the joint area
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
    • B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
    • B29C66/45—Joining of substantially the whole surface of the articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/74—Joining plastics material to non-plastics material
    • B29C66/742—Joining plastics material to non-plastics material to metals or their alloys
    • B29C66/7422—Aluminium or alloys of aluminium
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/80—Packaging reuse or recycling, e.g. of multilayer packaging

Abstract

The invention discloses a process for coating EPE pearl wool in an aluminum foil bag, which relates to a production process of the aluminum foil bag and comprises the following steps: step S1: selecting an inner lamination base material, and selecting aluminum foil paper as the inner lamination base material for the aluminum foil bag; step S2: treating the inner laminating surface of the inner laminated base material, flattening the base material to be subjected to inner lamination, enabling the inner laminating surface to be upward, and pretreating the inner laminating surface of the inner laminated base material to remove oil stains and sundries on the surface for later use; step S3: preheating an inner laminating base material, heating the inner laminating base material with the surface layer being light-absorbing coating to 270-290 ℃, and guiding the inner laminating base material out to the upper end of a lower template of cold pressing equipment. According to the invention, the light-absorbing material is coated on the inner coating surface of the inner coating base material, and the inner coating base material is preheated by the laser beam emitted by the high-frequency laser irradiation equipment, so that the inner coating base material is prevented from deforming to a large extent after being preheated on the basis of avoiding damaging the surface smoothness of the inner coating base material.

Description

Process for coating EPE pearl wool in aluminum foil bag
Technical Field
The invention relates to a production process of an aluminum foil bag, in particular to a process for coating EPE pearl wool in the aluminum foil bag.
Background
The aluminum foil bag is made by combining a plurality of plastic films and then using a bag making machine, and is used for packaging food, pharmaceutical industry products, daily necessities and the like.
EPE pearl cotton is a non-crosslinked closed cell structure, is also called polyethylene foam cotton, is a novel environment-friendly packaging material, and is formed by countless independent bubbles generated by physically foaming low-density polyethylene resin.
With the development and progress of modern society, the storage and transportation technology of frozen food and fresh food and the continuous development of products, in order to slow down the quality change speed of the frozen food and the fresh food in the transportation and distribution process, an aluminum foil bag covered with EPE pearl cotton in a flexible way or a rigid heat preservation bag is largely used, for example, Chinese patent discloses 'a production technology for a heat preservation paper box' (patent number: CN 110949874A), the patent solves the technical problems that seafood products with moisture are generally transported by a foam box or a plastic box in the market, the foam box is easy to break in the transportation process, the foam is a difficult degradation substance, the foam box also has the defect of small transportation amount of an empty box, the plastic box is difficult to fold, the transportation amount of the empty box is small, the transportation cost of a freezing vehicle or a refrigerator is high, and the transportation mode cost of the freezing vehicle or the refrigerator is high for general restaurant owners, moreover, seafood products transported to a freezing vehicle or a refrigerator need a temporary freezing space, and the technical problem is solved by the designed production process of the heat preservation paper box.
At present, the adhesive that EPE pearl cotton chooseed for use is mostly the hot melt adhesive in the aluminium foil bag, and still need heat the aluminium foil paper at the laminating in-process, influenced by the material, the aluminium foil paper takes place deformation easily at the in-process that is heated, and under the effect of high temperature, its surperficial smooth finish suffers destruction easily, and then can reduce the stability after aluminium foil paper and the cotton laminating of EPE pearl, and there is the air at the in-process that carries out the laminating between aluminium foil paper and the EPE pearl cotton, easy bubbling, consequently, urgent need for an aluminium foil bag laminating EPE pearl cotton technology to solve above-mentioned problem on the market at present stage.
Disclosure of Invention
The invention aims to solve the defects in the prior art, such as: at present, the adhesive that EPE pearl cotton chooseed for use is mostly the hot melt adhesive in the aluminium foil bag, and still need heat the aluminium foil paper at the laminating in-process, receive the material influence, the aluminium foil paper takes place deformation easily at the in-process that is heated, and under the effect of high temperature, the smooth finish on its surface suffers destruction easily, and then can reduce the stability after aluminium foil paper and the cotton laminating of EPE pearl, and there is the air at the in-process aluminium foil paper that carries out the laminating and EPE pearl are cotton, easy bubbling, and the aluminium foil bag in-process laminating EPE pearl cotton technology that proposes.
In order to achieve the purpose, the invention adopts the following technical scheme:
a process for coating EPE pearl wool in an aluminum foil bag comprises the following steps:
step S1: selecting an inner lamination base material, and selecting aluminum foil paper as the inner lamination base material for the aluminum foil bag;
step S2: treating the inner laminating surface of the inner laminated base material, flattening the base material to be subjected to inner lamination, enabling the inner laminating surface to be upward, and pretreating the inner laminating surface of the inner laminated base material to remove oil stains and sundries on the surface for later use;
step S3: preheating an inner clad substrate, heating the inner clad substrate with a light-absorbing coating on the surface layer to 270-290 ℃, and guiding the inner clad substrate to the upper end of a lower template of cold pressing equipment;
step S4: selecting a composite fabric, selecting EPE pearl cotton as an inner composite fabric for the aluminum foil bag, arranging the composite fabric corresponding to the shape of the inner composite base material between the inner composite base material and the upper template through a positioning frame, and enabling an inner layer of the composite fabric to face a glue coating layer of the inner composite base material;
step S5: cold laminating, namely compounding an upper template and a lower template of a normal-temperature liquid coolant in a pressurizing manner, wherein the molding pressure is 8-12 Mpa, and the molding time is not less than 60s, so as to obtain the inner-laminated EPE pearl cotton aluminum foil paper;
step S6: carrying out UV surface treatment, namely conveying the obtained inner-coated EPE pearl cotton aluminum foil paper to a UV lamp, and carrying out surface curing treatment by ultraviolet irradiation;
step S6: trimming the peripheral waste of the inner covering EPE pearl cotton aluminum foil paper with qualified quality, sending the waste into a special waste recovery device, and rolling the trimmed inner covering EPE pearl cotton aluminum foil paper to be processed into an aluminum foil bag.
Further, after the inner clad base material is led out to the upper end of the lower template of the cold pressing device in the step S3, a layer of glue is coated on the inner clad surface of the inner clad base material.
Further, the glue is a hot melt adhesive, and the hot melt adhesive is one of a PE hot melt adhesive, a PP hot melt adhesive and an APAO hot melt adhesive.
Further, before the step S3 is performed and before a layer of glue is coated on the inner coating surface of the inner coating substrate, the inner coating surface of the inner coating substrate needs to be cleaned by operating a dust collector.
Further, the light absorbing coating in step S3 includes the following components: the alloy is formed by mixing Co, Si, Ni, C and Fe according to a certain mass percentage.
Further, the liquid coolant selected in step S5 is water or brine.
Further, the device selected for heating in step S3 is a high-frequency laser irradiation device, and after the light absorbing material is dried at room temperature, the clad base material is preheated by a laser beam emitted from the high-frequency laser irradiation device.
Furthermore, a pressure relief hole is formed in the surface of the upper die plate corresponding to the position of the clad fabric, and the pressure relief hole is formed by needling.
Furthermore, the needle punching is completed by a sewing needle which is 6-or 8-sized, and the density of the pressure relief holes is 120-210/m 2.
Furthermore, the composite fabric has the advantages of low thermal conductivity and high heat insulation, and the inner composite base material has the advantages of high light-heat reflectivity, heat insulation, moisture resistance, fire resistance and easiness in cleaning.
Compared with the prior art, the invention has the beneficial effects that:
(1) according to the invention, the light-absorbing material is coated on the inner coating surface of the inner coating base material, and the inner coating base material is preheated by the laser beam emitted by the high-frequency laser irradiation equipment, so that the inner coating base material is prevented from deforming to a large extent after being preheated on the basis of avoiding damaging the surface smoothness of the inner coating base material.
(2) According to the invention, the upper template and the lower template of the normal-temperature liquid coolant are compounded in a pressurizing manner, so that the step of drying glue can be omitted, and further, the production time and the energy consumption can be saved.
(3) The inner composite EPE pearl cotton aluminum foil paper is formed by die pressing and compounding an inner composite fabric and an inner composite base material, the inner composite base material is subjected to heating treatment, on one hand, the inner composite base material is used for coating hot melt adhesive, on the other hand, the inner composite base material is subjected to preheating treatment, and the upper template and the lower template are cooled by adopting normal-temperature liquid coolant, so that the defect that the composite fabric is unstable due to heat transfer from the inner composite base material to the composite fabric can be avoided, and glue on the surface of the inner composite base material can permeate into gaps of the inner composite base material after being heated, so that the stability between the composite fabric and the inner composite base material can be enhanced.
(4) The interior trimming plate is formed by die-pressing and compounding composite fabric and the fiber plate with the hot melt adhesive film layer, the fiber plate is subjected to heating treatment, the discharged fiber plate is placed on the lower die, the plate is in a small-amplitude collapse state, the upper die and the lower die are both cooled by water at normal temperature, the defect that the material is unstable due to heat transfer of the fiber plate to the composite fabric is avoided, in addition, the hot melt adhesive film layer on the surface of the fiber plate can penetrate into gaps of the plate after being heated, so that the glue and the inner covering base material are firmly fused together, and the increase of the bonding interface area and the bonding strength.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a process flow diagram of the present invention;
fig. 2 is a schematic perspective view of an upper mold plate according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
Referring to fig. 1-2, a process for coating EPE pearl wool in an aluminum foil bag comprises the following steps:
step S1: selecting an inner lamination base material, and selecting aluminum foil paper as the inner lamination base material for the aluminum foil bag;
step S2: treating the inner laminating surface of the inner laminated base material, flattening the base material to be subjected to inner lamination, enabling the inner laminating surface to be upward, and pretreating the inner laminating surface of the inner laminated base material to remove oil stains and sundries on the surface for later use;
step S3: preheating an inner clad substrate, heating the inner clad substrate with a light-absorbing coating on the surface layer to 270-290 ℃, and guiding the inner clad substrate to the upper end of a lower template of cold pressing equipment;
step S4: selecting a composite fabric, selecting EPE pearl cotton as an inner composite fabric for the aluminum foil bag, arranging the composite fabric corresponding to the shape of the inner composite base material between the inner composite base material and the upper template through a positioning frame, and enabling an inner layer of the composite fabric to face a glue coating layer of the inner composite base material;
step S5: cold laminating, namely compounding an upper template and a lower template of a normal-temperature liquid coolant in a pressurizing manner, wherein the molding pressure is 8-12 Mpa, and the molding time is not less than 60s, so as to obtain the inner-laminated EPE pearl cotton aluminum foil paper;
step S6: carrying out UV surface treatment, namely conveying the obtained inner-coated EPE pearl cotton aluminum foil paper to a UV lamp, and carrying out surface curing treatment by ultraviolet irradiation;
step S6: trimming the peripheral waste of the inner covering EPE pearl cotton aluminum foil paper with qualified quality, sending the waste into a special waste recovery device, and rolling the trimmed inner covering EPE pearl cotton aluminum foil paper to be processed into an aluminum foil bag.
Specifically, after the inner clad base material is led out to the upper end of the lower template of the cold pressing device in the step S3, a layer of glue is coated on the inner clad surface of the inner clad base material.
Specifically, the glue is a hot melt adhesive, and the hot melt adhesive is one of a PE hot melt adhesive, a PP hot melt adhesive and an APAO hot melt adhesive.
Specifically, before the step S3 is performed and before a layer of glue is coated on the inner coating surface of the inner coating base material, the inner coating surface of the inner coating base material needs to be subjected to dust collection by operating a dust collector.
Specifically, the light absorbing coating in step S3 includes the following components: the alloy is formed by mixing Co, Si, Ni, C and Fe according to a certain mass percentage.
Specifically, the liquid coolant selected in step S5 is water or brine.
Specifically, the device selected for heating in step S3 is a high-frequency laser irradiation device, and after the light-absorbing material is dried at room temperature, the interior laminated base material is preheated by a laser beam emitted from the high-frequency laser irradiation device.
Specifically, the surface of the upper die plate is provided with a pressure relief hole corresponding to the position of the clad fabric, and the pressure relief hole is obtained by needling.
Specifically, the needle punching is completed by a sewing needle which is 6 or 8 in number, and the density of the pressure relief holes is 120-210/m 2.
Specifically, the composite fabric has the advantages of low thermal conductivity and high heat insulation, and the inner composite base material has the advantages of high photo-thermal reflectivity, heat insulation, moisture resistance, fire resistance and easiness in cleaning.
In the invention, an inner covering base material is selected, aluminum foil paper is selected as the inner covering base material for the aluminum foil bag, the inner covering surface of the inner covering base material is treated, the base material to be subjected to inner covering is flattened, the inner covering surface is upward, the inner covering surface of the inner covering base material is pretreated, oil stain and sundries on the surface of the inner covering base material are removed for standby, the inner covering base material is preheated, the inner covering base material with a light absorbing coating on the surface layer is heated to 270-290 ℃, the inner covering base material is led out to the upper end of a lower template of cold pressing equipment, then a layer of glue is further coated on the inner covering surface of the inner covering base material, the glue is selected from a hot melt adhesive, the hot melt adhesive is one of PE hot melt adhesive, PP hot melt adhesive and APAO hot melt adhesive, the light absorbing material is coated on the inner covering surface of the inner covering base material, the inner covering base material is preheated through a laser beam emitted by high-frequency laser irradiation equipment, the surface of the inner covering base material can be prevented, the inner clad base material is prevented from deforming to a large extent after being preheated, the clad fabric is selected, EPE pearl cotton is selected as the inner clad fabric for the aluminum foil bag, the clad fabric corresponding to the shape of the inner clad base material is arranged between the inner clad base material and the upper template through the positioning frame, the inner layer of the clad fabric faces to the glue coating layer of the inner clad base material, the inner decorative plate is formed by laminating the composite fabric and the fiber plate with the hot melt adhesive film layer in a die pressing mode, the fiber plate is heated, the discharged fiber plate is placed on the lower die, the plate is in a small-width collapse state, the upper die and the lower die are cooled by water at normal temperature, the defect that the material is unstable due to the fact that the fiber plate conducts heat to the composite fabric is avoided, in addition, the hot melt adhesive film layer on the surface of the fiber plate can penetrate into gaps after being heated, the glue and the inner clad base material are firmly fused together, cold laminating, compounding an upper template and a lower template of a normal-temperature liquid coolant in a pressurizing manner, wherein the molding pressure is 8-12 Mpa, the molding time is not lower than 60s, obtaining inner laminated EPE pearl cotton aluminum foil paper, carrying out UV surface treatment, conveying the obtained inner laminated EPE pearl cotton aluminum foil paper to a UV lamp, carrying out surface curing treatment through ultraviolet irradiation, trimming peripheral waste materials of the inner laminated EPE pearl cotton aluminum foil paper with qualified quality, conveying the waste materials into waste material special recovery equipment, and rolling the trimmed inner laminated EPE pearl cotton aluminum foil paper to be processed into an aluminum foil bag.
The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims (10)

1. A process for coating EPE pearl wool in an aluminum foil bag is characterized by comprising the following steps:
step S1: selecting an inner lamination base material, and selecting aluminum foil paper as the inner lamination base material for the aluminum foil bag;
step S2: treating the inner laminating surface of the inner laminated base material, flattening the base material to be subjected to inner lamination, enabling the inner laminating surface to be upward, and pretreating the inner laminating surface of the inner laminated base material to remove oil stains and sundries on the surface for later use;
step S3: preheating an inner clad substrate, heating the inner clad substrate with a light-absorbing coating on the surface layer to 270-290 ℃, and guiding the inner clad substrate to the upper end of a lower template of cold pressing equipment;
step S4: selecting a composite fabric, selecting EPE pearl cotton as an inner composite fabric for the aluminum foil bag, arranging the composite fabric corresponding to the shape of the inner composite base material between the inner composite base material and the upper template through a positioning frame, and enabling an inner layer of the composite fabric to face a glue coating layer of the inner composite base material;
step S5: cold laminating, namely compounding an upper template and a lower template of a normal-temperature liquid coolant in a pressurizing manner, wherein the molding pressure is 8-12 Mpa, and the molding time is not less than 60s, so as to obtain the inner-laminated EPE pearl cotton aluminum foil paper;
step S6: carrying out UV surface treatment, namely conveying the obtained inner-coated EPE pearl cotton aluminum foil paper to a UV lamp, and carrying out surface curing treatment by ultraviolet irradiation;
step S6: trimming the peripheral waste of the inner covering EPE pearl cotton aluminum foil paper with qualified quality, sending the waste into a special waste recovery device, and rolling the trimmed inner covering EPE pearl cotton aluminum foil paper to be processed into an aluminum foil bag.
2. The process of claim 1, wherein after the inner laminated base material is guided out to the upper end of the lower template of the cold pressing device in the step S3, a layer of glue is further coated on the inner laminated surface of the inner laminated base material.
3. The process for laminating the EPE pearl wool in the aluminum foil bag according to claim 2, wherein the glue is a hot melt adhesive, and the hot melt adhesive is one of a PE hot melt adhesive, a PP hot melt adhesive and an APAO hot melt adhesive.
4. The process of claim 3, wherein the inner surface of the inner laminated substrate is cleaned by operating a dust collector before the step S3 and before the glue is coated on the inner surface of the inner laminated substrate.
5. The process of claim 1, wherein the light-absorbing coating in step S3 comprises the following components: the alloy is formed by mixing Co, Si, Ni, C and Fe according to a certain mass percentage.
6. The process of claim 1, wherein the liquid coolant used in step S5 is water or saline.
7. The process of claim 1, wherein the heating in step S3 is performed by a high frequency laser irradiation device, and the coated substrate is preheated by a laser beam emitted from the high frequency laser irradiation device after the light-absorbing material is dried at room temperature.
8. The process for covering the EPE pearl wool in the aluminum foil bag according to claim 1, wherein a pressure relief hole is formed in the surface of the upper die plate at a position corresponding to the covering fabric, and the pressure relief hole is obtained by needling.
9. The process for covering the EPE pearl wool in the aluminum foil bag according to claim 8, wherein the needling is performed by using a sewing needle, the sewing needle is No. 6 or No. 8, and the density of the pressure relief holes is 120-210 per m 2.
10. The process for covering the EPE pearl wool in the aluminum foil bag as claimed in claim 1, wherein the covering fabric has the advantages of low thermal conductivity and high thermal insulation, and the inner covering substrate has the advantages of high light-heat reflectivity, thermal insulation, moisture resistance, fire resistance and easy cleaning.
CN202011314026.5A 2020-11-20 2020-11-20 Process for coating EPE pearl wool in aluminum foil bag Active CN112537034B (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104827726A (en) * 2015-05-08 2015-08-12 洪泽民 Expandable polyethylene (EPE) and aluminium foil compound packing material
CN107584852A (en) * 2017-09-21 2018-01-16 海盐华诚新材料有限公司 A kind of Integral ceiling coated by high-molecular film curing process
CN209871138U (en) * 2019-01-12 2019-12-31 苏州市浩鑫包装材料有限公司 Antistatic moisture-proof aluminum foil bag suitable for food
CN111634102A (en) * 2020-06-11 2020-09-08 合肥市兴烨包装材料有限公司 EPE pearl cotton and aluminum film compounding process

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104827726A (en) * 2015-05-08 2015-08-12 洪泽民 Expandable polyethylene (EPE) and aluminium foil compound packing material
CN107584852A (en) * 2017-09-21 2018-01-16 海盐华诚新材料有限公司 A kind of Integral ceiling coated by high-molecular film curing process
CN209871138U (en) * 2019-01-12 2019-12-31 苏州市浩鑫包装材料有限公司 Antistatic moisture-proof aluminum foil bag suitable for food
CN111634102A (en) * 2020-06-11 2020-09-08 合肥市兴烨包装材料有限公司 EPE pearl cotton and aluminum film compounding process

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