CN110802904A - Multilayer high-barrier plastic uptake box and preparation method thereof - Google Patents

Multilayer high-barrier plastic uptake box and preparation method thereof Download PDF

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Publication number
CN110802904A
CN110802904A CN201910986051.9A CN201910986051A CN110802904A CN 110802904 A CN110802904 A CN 110802904A CN 201910986051 A CN201910986051 A CN 201910986051A CN 110802904 A CN110802904 A CN 110802904A
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barrier
layer
base layer
barrier layer
thickness
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李广涛
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Suzhou Tongzhou Packaging Co Ltd
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Suzhou Tongzhou Packaging Co Ltd
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Priority to CN201910986051.9A priority Critical patent/CN110802904A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B7/00—Mixing; Kneading
    • B29B7/002—Methods
    • 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
    • B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
    • B29C51/10—Forming by pressure difference, e.g. vacuum
    • 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
    • B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
    • B29C51/14—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor using multilayered preforms or sheets
    • 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
    • B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
    • B29C51/26—Component parts, details or accessories; Auxiliary operations
    • B29C51/46—Measuring, controlling or regulating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material 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
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
    • B32B27/20—Layered products comprising a layer of synthetic resin characterised by the use of special additives using fillers, pigments, thixotroping agents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
    • B32B27/302—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising aromatic vinyl (co)polymers, e.g. styrenic (co)polymers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
    • B32B27/304—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising vinyl halide (co)polymers, e.g. PVC, PVDC, PVF, PVDF
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
    • B32B27/306—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising vinyl acetate or vinyl alcohol (co)polymers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • 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
    • 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
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D65/00—Wrappers or flexible covers; Packaging materials of special type or form
    • B65D65/38—Packaging materials of special type or form
    • B65D65/40—Applications of laminates for particular packaging purposes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2027/00—Use of polyvinylhalogenides or derivatives thereof as moulding material
    • B29K2027/06—PVC, i.e. polyvinylchloride
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2031/00—Use of polyvinylesters or derivatives thereof as moulding material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/712—Containers; Packaging elements or accessories, Packages
    • B29L2031/7162—Boxes, cartons, cases
    • 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
    • B32B2307/724—Permeability to gases, adsorption
    • B32B2307/7242—Non-permeable
    • B32B2307/7246—Water vapor barrier
    • 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
    • B32B2439/00—Containers; Receptacles
    • B32B2439/70—Food packaging

Abstract

The invention provides a multilayer high-barrier plastic uptake box which is characterized by comprising a base layer, an adhesive layer and a barrier layer, wherein the adhesive layer is positioned between the base layer and the barrier layer and used for bonding the base layer and the barrier layer, the base layer is made of any one of PET, PP or PS, at least one of styrene-butadiene-styrene block copolymer, acrylonitrile-styrene resin copolymer and ethylene-vinyl acetate copolymer is arranged in the adhesive layer, and the barrier layer is a composite film. The barrier property of the plastic-absorbing box can be improved through multilayer compounding, and meanwhile, after the montmorillonite in the barrier layer is modified, the interlayer spacing is increased, the dispersibility of the montmorillonite in a matrix is improved, more barrier layers are formed, the tortuosity of an effective path of water vapor passing through a film is larger, the probability of water vapor permeation is reduced, and the water vapor barrier property of the plastic-absorbing box is improved.

Description

Multilayer high-barrier plastic uptake box and preparation method thereof
Technical Field
The invention relates to a multilayer blister material, in particular to a multilayer high-barrier blister box and a preparation method thereof.
Background
With the improvement of living standard, people have higher and higher requirements on various packaging materials, for example, the packaging materials of food need to have high barrier property, oxygen barrier property and moisture barrier property so as to prolong the shelf life of the food. In order to meet the requirements, people continuously research various polymer material barrier technologies. The conventional barrier film is aluminum, which not only provides a high barrier. And low cost, and can dry compound polymer matrix with high barrier polymer multilayer 13 ]. High barrier materials include PVDC, EVOH, PVAL, PA6, and the like.
The composite barrier modification of plastics is the most effective barrier modification method. For example: the EVOH sandwich layer can be sandwiched between two layers of nylon films, the two resins are polar resins, and can be mutually bonded without an adhesive layer in the middle, so that the cost is greatly reduced. Moreover, the EVOH layer is positioned in the middle of the nylon and can not contact grease and volatile oil. The EVOH core layer can not be damaged by thermal forming processing, thereby ensuring the barrier effect. If the compatibility between the two is poor, a proper adhesive resin needs to be added. At present, the number of composite layers is developed to nine or even ten layers, the development speed is very high, and the composite film is applied to packaging films and hollow containers.
Disclosure of Invention
The technical problem to be solved is as follows: the invention aims to provide a multilayer high-barrier plastic uptake box and a preparation method thereof.
The technical scheme is as follows: the utility model provides a multilayer high resistant separates plastic uptake box, includes basic unit, bond-coat and barrier layer, the bond-coat is located between basic unit and the barrier layer for bond-coat and barrier layer, the basic unit is any one material in PET, PP or PS, at least one of styrene-butadiene-styrene block copolymer, acrylonitrile-styrene resin copolymer, ethylene vinyl acetate copolymer in the bond-coat, the barrier layer is the complex film.
Preferably, the composite film is formed by blending organic intercalation modified filler, PVC, EVA, calcium stearate and tristearin.
Preferably, the thickness of the base layer is between 0.2 and 0.5mm, the thickness of the adhesive layer is between 0.2 and 0.4mm, and the thickness of the barrier layer is between 0.2 and 0.5 mm.
Preferably, the preparation method of the organic intercalation modified filler comprises the following steps:
A. adding montmorillonite into deionized water, swelling, stirring, standing overnight, collecting upper montmorillonite suspension, and ultrasonically dispersing the suspension;
B. adding hexadecyl dimethyl benzyl ammonium chloride into water, and uniformly mixing and dispersing;
C. and B, uniformly mixing the solutions prepared in the step A and the step B, then obtaining a precipitate, washing, drying and grinding the precipitate to obtain the organic intercalation modified filler.
The preparation method of the multilayer high-barrier plastic uptake box is characterized by comprising the following steps:
A. mixing organic intercalation modified filler, PVC, EVA, calcium stearate and tristearin in a high-speed mixer, then mixing the mixed materials, controlling the roll temperature to be 150-165 ℃, the thin passing times to be 4-8 times, and the thickness of the produced sheet to be about 0.2-0.5 mm;
B. respectively carrying out plastic suction molding on the base layer and the barrier layer, then compounding the base layer and the barrier layer together through the bonding layer, stacking the layers in a mold according to the required thickness, preheating the layers in a hydraulic press at the temperature of 150-165 ℃ for 5min, pressurizing to 8-12MPa, maintaining the pressure for 4min, and then cooling to room temperature at the pressure of 5MPa for discharging.
Has the advantages that: the invention has the following advantages: the barrier property of the plastic-suction box can be improved through multilayer compounding, and meanwhile, after montmorillonite in the barrier layer is modified, the interlayer distance is increased, the dispersibility of montmorillonite in a matrix is improved, more barrier layers are formed, the tortuosity of an effective path of water vapor passing through a film is larger, the probability of water vapor permeation is reduced, and the water vapor barrier property of the plastic-suction box is improved.
Detailed Description
Example 1
The preparation method of the organic intercalation modified filler comprises the following steps:
A. adding 10g of montmorillonite into 300g of deionized water, swelling, stirring, standing overnight, taking an upper montmorillonite suspension, and performing ultrasonic dispersion on the suspension;
B. adding 10g of hexadecyl dimethyl benzyl ammonium chloride into 100g of water, and uniformly dispersing by ultrasonic treatment for 2 hours;
C. and B, stirring the solutions prepared in the step A and the step B for 10 hours at the temperature of 60 ℃, uniformly mixing, then obtaining a precipitate, washing, drying and grinding the precipitate to obtain the organic intercalation modified filler.
Example 2
The preparation method of the organic intercalation modified filler comprises the following steps:
B. adding 10g of montmorillonite into 500g of deionized water, swelling, stirring, standing overnight, taking an upper montmorillonite suspension, and performing ultrasonic dispersion on the suspension;
B. adding 10g of hexadecyl dimethyl benzyl ammonium chloride into 200g of water, and uniformly dispersing by ultrasonic treatment for 2 hours;
C. and B, stirring the solutions prepared in the step A and the step B at 80 ℃ for 6 hours, uniformly mixing, then obtaining a precipitate, washing, drying and grinding the precipitate to obtain the organic intercalation modified filler.
Example 3
A. Mixing the organic intercalation modified filler prepared in the example 1, PVC, EVA, calcium stearate and glyceryl tristearate in a high-speed mixer, then mixing the mixed materials, controlling the roll temperature at 150 ℃, controlling the thin pass frequency at 4 times, and obtaining a barrier layer with the thickness of about 0.2 mm;
B. respectively carrying out plastic suction molding on the PET base layer and the barrier layer, then compounding the base layer and the barrier layer together through a styrene-butadiene-styrene segmented copolymer adhesive layer, stacking the layers in a mold according to the required thickness, preheating the layers in a hydraulic press at 165 ℃ for 5min, pressurizing to 8MPa for 4min, keeping the pressure, cooling to room temperature at 5MPa, and discharging, wherein the thickness of the base layer is between 0.2mm, the thickness of the adhesive layer is between 0.4mm, and the thickness of the barrier layer is between 0.2 mm.
Example 4
A. Mixing the organic intercalation modified filler prepared in the example 1, PVC, EVA, calcium stearate and glyceryl tristearate in a high-speed mixer, then mixing the mixed materials, controlling the roll temperature to be 165 ℃, controlling the thin pass frequency to be 8 times, and obtaining a barrier layer with the thickness of about 0.5 mm;
B. respectively carrying out plastic suction molding on the PP base layer and the barrier layer, then compounding the base layer and the barrier layer together through an acrylonitrile-styrene resin copolymer adhesive layer, stacking the layers in a mold according to the required thickness, preheating the layers in a hydraulic press at 150 ℃ for 5min, pressurizing to 12MPa for 4min, keeping the pressure, then cooling to room temperature at 5MPa, and discharging, wherein the thickness of the base layer is between 0.5mm, the thickness of the adhesive layer is between 0.2mm, and the thickness of the barrier layer is between 0.5 mm.
Example 5
A. Mixing the organic intercalation modified filler prepared in the example 2, PVC, EVA, calcium stearate and tristearin in a high-speed mixer, then mixing the mixed materials, controlling the roll temperature to be 155 ℃, the thin passing times to be 6 times, and obtaining a barrier layer with the thickness of about 0.3 mm;
B. respectively carrying out plastic suction molding on the PS base layer and the barrier layer, then compounding the base layer and the barrier layer together through an ethylene-vinyl acetate copolymer bonding layer, stacking the layers in a mold according to the required thickness, preheating the layers in a hydraulic press at 155 ℃ for 5min, pressurizing to 9MPa for 4min, keeping the pressure, then cooling to room temperature at 5MPa, and discharging, wherein the thickness of the base layer is between 0.3mm, the thickness of the bonding layer is between 0.3mm, and the thickness of the barrier layer is between 0.4 mm.
Example 6
A. Mixing the organic intercalation modified filler prepared in the example 2, PVC, EVA, calcium stearate and tristearin in a high-speed mixer, then mixing the mixed materials, controlling the roll temperature to 160 ℃, controlling the thin passing times to 6 times, and obtaining a barrier layer with the thickness of about 0.4 mm;
B. respectively carrying out plastic suction molding on the PET base layer and the barrier layer, then compounding the base layer and the barrier layer together through a styrene-butadiene-styrene segmented copolymer adhesive layer, stacking the layers in a mold according to the required thickness, preheating the layers in a hydraulic press at 160 ℃ for 5min, pressurizing to 10MPa for maintaining the pressure for 4min, then cooling to room temperature at 5MPa, and discharging, wherein the thickness of the base layer is between 0.4mm, the thickness of the adhesive layer is between 0.3mm, and the thickness of the barrier layer is between 0.2 mm.
Comparative example 1
Compared with the example 3, the barrier layer directly adopts the PVC material, and other parameters are the same.
The performance tests were carried out for examples 3 to 6 and comparative example 1, the same parameters as those not defined except that the specific parameters were defined, and the water vapor barrier performance test: the water vapor barrier properties were measured by the evaporation method according to GB/T2679.3-1995, and the water vapor barrier effects of examples 3-6 were 0.009-0.0034 g/(m)224h), whereas the comparative example had a water vapor barrier effect of 0.145 g/(m)2•24h)。

Claims (5)

1. The multilayer high-barrier plastic uptake box is characterized by comprising a base layer, an adhesive layer and a barrier layer, wherein the adhesive layer is positioned between the base layer and the barrier layer and used for bonding the base layer and the barrier layer, the base layer is made of any one of PET, PP or PS, at least one of styrene-butadiene-styrene block copolymer, acrylonitrile-styrene resin copolymer and ethylene-vinyl acetate copolymer is arranged in the adhesive layer, and the barrier layer is a composite film.
2. A multilayer high barrier blister pack according to claim 1, wherein: the composite film is formed by blending organic intercalation modified filler, PVC, EVA, calcium stearate and tristearin.
3. A multilayer high barrier blister pack according to claim 1, wherein: the thickness of the base layer is between 0.2 and 0.5mm, the thickness of the adhesive layer is between 0.2 and 0.4mm, and the thickness of the barrier layer is between 0.2 and 0.5 mm.
4. The multilayer high-barrier blister box according to claim 2, wherein the organic intercalation modified filler is prepared by the following method:
adding montmorillonite into deionized water, swelling, stirring, standing overnight, collecting upper montmorillonite suspension, and ultrasonically dispersing the suspension;
adding hexadecyl dimethyl benzyl ammonium chloride into water, and uniformly mixing and dispersing;
and B, uniformly mixing the solutions prepared in the step A and the step B, then obtaining a precipitate, washing, drying and grinding the precipitate to obtain the organic intercalation modified filler.
5. A process for the manufacture of a multilayer high barrier blister pack according to claims 1 to 4, comprising the steps of:
mixing organic intercalation modified filler, PVC, EVA, calcium stearate and tristearin in a high-speed mixer, then mixing the mixed materials, controlling the roll temperature to be 150-165 ℃, the thin passing times to be 4-8 times, and the thickness of the produced sheet to be about 0.2-0.5 mm;
respectively carrying out plastic suction molding on the base layer and the barrier layer, then compounding the base layer and the barrier layer together through the bonding layer, stacking the layers in a mold according to the required thickness, preheating the layers in a hydraulic press at the temperature of 150-165 ℃ for 5min, pressurizing to 8-12MPa, maintaining the pressure for 4min, and then cooling to room temperature at the pressure of 5MPa for discharging.
CN201910986051.9A 2019-10-17 2019-10-17 Multilayer high-barrier plastic uptake box and preparation method thereof Pending CN110802904A (en)

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CN104553100A (en) * 2015-01-30 2015-04-29 苏州杜伦复合新材料有限公司 Ultra-light plastic plate and manufacturing process thereof
CN204414617U (en) * 2015-01-30 2015-06-24 苏州杜伦复合新材料有限公司 A kind of equipment manufacturing ultralight plastic plate
CN106800113A (en) * 2017-03-15 2017-06-06 卓高泰(广州)包装有限公司 A kind of box body of plastic uptake, integrated through injection molding chemical conversion type
CN107189256A (en) * 2017-06-01 2017-09-22 贵州千叶药品包装股份有限公司 It is a kind of to use saturating medicinal PVC hard piece of high resistant of nano intercalated preparation and preparation method thereof
CN109263075A (en) * 2018-10-18 2019-01-25 深圳市亚美三兄吸塑有限公司 The one-step moulding method of double-layer plastic-sucking forming integrated machine and the double-deck plate

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1511871A (en) * 2002-12-27 2004-07-14 中国石化北京燕化石油化工股份有限公 Polyvinyl/montmorillonite composite separate material
CN104553100A (en) * 2015-01-30 2015-04-29 苏州杜伦复合新材料有限公司 Ultra-light plastic plate and manufacturing process thereof
CN204414617U (en) * 2015-01-30 2015-06-24 苏州杜伦复合新材料有限公司 A kind of equipment manufacturing ultralight plastic plate
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Application publication date: 20200218