CN111846574A - Environment-friendly middle-sealed formed multilayer packaging bag and production process thereof - Google Patents

Environment-friendly middle-sealed formed multilayer packaging bag and production process thereof Download PDF

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Publication number
CN111846574A
CN111846574A CN202010612240.2A CN202010612240A CN111846574A CN 111846574 A CN111846574 A CN 111846574A CN 202010612240 A CN202010612240 A CN 202010612240A CN 111846574 A CN111846574 A CN 111846574A
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China
Prior art keywords
layer
parts
polyethylene
polypropylene
raw materials
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CN202010612240.2A
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Chinese (zh)
Inventor
徐卫国
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Jiangsu Wanle Composite Material Co ltd
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Jiangsu Wanle Composite Material Co ltd
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Priority to CN202010612240.2A priority Critical patent/CN111846574A/en
Publication of CN111846574A publication Critical patent/CN111846574A/en
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Classifications

    • 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
    • B65D31/00—Bags or like containers made of paper and having structural provision for thickness of contents
    • B65D31/02—Bags or like containers made of paper and having structural provision for thickness of contents with laminated walls
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D22/00—Producing hollow articles
    • B29D22/003—Containers for packaging, storing or transporting, e.g. bottles, jars, cans, barrels, tanks
    • 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
    • B32B27/12—Layered products comprising a layer of synthetic resin next to a fibrous or filamentary layer
    • 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
    • B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
    • 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
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • 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
    • B32B2255/00—Coating on the layer surface
    • B32B2255/26—Polymeric coating
    • 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
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/02—Synthetic macromolecular fibres
    • B32B2262/0253—Polyolefin fibres
    • 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
    • B32B2307/50—Properties of the layers or laminate having particular mechanical 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
    • B32B2439/00—Containers; Receptacles
    • B32B2439/02—Open containers
    • B32B2439/06—Bags, sacks, sachets
    • 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

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bag Frames (AREA)

Abstract

The invention aims to solve the problem that the existing packaging bag is difficult to recycle, and discloses an environment-friendly middle-sealed formed multilayer packaging bag which comprises a bag body, wherein the bag body comprises an inner layer, a first middle layer, a second middle layer and an outer layer which are sequentially connected, the inner layer is a plastic woven fabric layer, the first middle layer is an adhesive coating layer, the second middle layer is a PP type film printing body layer, and the outer layer is an anti-skid coating layer. The multilayer packaging bag prepared by the invention is more environment-friendly and is extremely easy to recycle.

Description

Environment-friendly middle-sealed formed multilayer packaging bag and production process thereof
Technical Field
The invention relates to the technical field of packaging bag processing, in particular to an environment-friendly middle-sealed formed multilayer packaging bag.
Background
In recent years, the requirement on environment-friendly packaging bags is higher and higher, and the common 25KG chemical packaging bags at present adopt paper-plastic composite bags, the outer layer is kraft paper, the inner layer is woven cloth, and the inner layer and the outer layer are tightly bonded together through a coating film layer in the middle to achieve certain strength; the longitudinal ribs and the transverse ribs on the inner layer of the original crisp paper have certain tension, and the inherent colorful printing performance of the paper and the anti-skid performance with large friction coefficient between the paper are kept; after the woven cloth of the inner layer is compounded and fixed, the longitudinal and transverse warps cannot be loosened, so that the strength of the composite bag is improved; the middle dense coating layer plays a good role in sealing, and is particularly suitable for packaging and transporting chemical granular materials; however, the paper-plastic composite bag is a global problem after use and is not easy to recycle, paper and woven cloth are non-renewable resources, and a plurality of places can only be subjected to incineration treatment, so that not only is the resource wasted, but also the environment is greatly polluted; some enterprises have carried out paper-plastic separation projects, but the cost is too high, the income is too little, and the method is abandoned. Therefore, in view of the above, a change is made to the packaging bag to meet the demand of the package with a suitable substitute product.
Disclosure of Invention
In order to solve the technical problem, an environment-friendly middle-sealed multi-layer packaging bag is provided.
The invention solves the technical problems through the following technical scheme: the utility model provides a sealed shaping multilayer packaging bag in environment-friendly, multilayer packaging bag includes the bag body, the bag body is including inlayer, first middle level, second middle level, the skin that connects gradually, the inlayer is the plastics woven fabrics layer, and first middle level is the bonding and scribbles the rete, and the second middle level is PP type membrane printing body layer, and the skin is anti-skidding and scribbles the rete.
As a preferable technical scheme of the invention, the preparation raw materials of the plastic woven cloth layer comprise the following components in parts by weight: 20-40 parts of polyethylene, 60-90 parts of polypropylene, 3 parts of polyethylene wax, 0.1-0.3 part of antioxidant, 0.1-0.4 part of ultraviolet absorbent and 5-15 parts of modifier; the antioxidant is an antioxidant 1010, the ultraviolet absorbent is an ultraviolet absorbent UV-327, and the modifier is a modifier Y681;
the preparation raw materials of the adhesive coating layer comprise the following components in parts by weight: 20-40 parts of polyethylene, 60-90 parts of polypropylene, 0.1-0.3 part of antioxidant and 0.1-0.4 part of ultraviolet absorbent; the polyethylene is polyethylene 1C7A, the polypropylene is polypropylene R500TF, and the ultraviolet absorbent is ultraviolet absorbent UV-327;
The PP type film printing body layer comprises the following raw materials in parts by weight: 20-40 parts of polyethylene, 60-90 parts of polypropylene, 0.1-0.3 part of antioxidant and 1-4 parts of color master batch; the polyethylene is polyethylene 1C7A, and the polypropylene is polypropylene R500 TF;
the anti-skid coating layer comprises the following raw materials in parts by weight: 20-40 parts of polyethylene, 60-90 parts of polypropylene, 0.1-0.3 part of antioxidant, 0.1-0.4 part of ultraviolet absorbent and 5-15 parts of linear polyethylene; the polyethylene is polyethylene 1C7A, the polypropylene is polypropylene RPP-100, the ultraviolet absorbent is ultraviolet absorbent UV-327, and the linear polyethylene is linear polyethylene LDPE 1001.
As a preferred technical scheme of the invention, the color master batch is prepared from the following raw materials in parts by weight: 70-90 parts of calcium carbonate, 15-25 parts of polyethylene, 6 parts of light stabilizer, 3 parts of antioxidant, 4 parts of light stabilizer, 8 parts of zinc oxide, 2 parts of antioxidant and 4 parts of PE wax; the polyethylene is 7042; the light stabilizer is light stabilizer 2020, and the antioxidant is antioxidant 245; the light stabilizer is light stabilizer 327; the calcium carbonate is 500-1500 meshes.
As a preferable technical solution of the present invention, the PP-type film printed body layer is provided with a printed mark.
As a preferable technical solution of the present invention, the bottom of the bag body (i.e., the bag end) is sewn with a bottom edge by a sewing machine, and a bottom edge sealing tape for sealing the sewn bottom edge is provided at the sewn bottom edge.
As the preferable technical scheme of the invention, the bottom edge sealing adhesive tape consists of a plastic woven cloth middle layer, a polypropylene coating outer layer and a high-temperature self-adhesive inner layer, and the bottom edge sealing adhesive tape wraps the bottom edge of the bag body through high-temperature heating.
As a preferred technical scheme of the invention, the bag body is provided with symmetrical M-shaped folded edges at two sides, polypropylene self-adhesive glue points are sprayed at the bag opening and the bag tail of the bag body on the M-shaped folded edges, and the M-shaped folded edges are bonded through the polypropylene self-adhesive glue points.
As a preferable technical scheme of the invention, the M-shaped folded edge bonding part can be opened by applying a force more than or equal to 30N, and the M-shaped folded edge can be pressed down to reset the bonding part if the M-shaped folded edge bonding part is not used.
The production process of the environment-friendly middle-sealed multi-layer packaging bag comprises the following steps:
(1) obtaining a plastic woven cloth layer raw material; putting the raw materials for preparing the plastic woven cloth layer in parts by weight into a stirrer, and uniformly stirring to obtain the raw materials of the plastic woven cloth layer;
(2) Obtaining a raw material of an adhesive coating layer; putting raw materials for preparing the adhesive coating layer in parts by weight into a stirrer, and uniformly stirring to obtain raw materials of the adhesive coating layer;
(3) obtaining a PP type film printing body layer raw material; putting the PP type film printing body layer preparation raw material in parts by weight into a stirrer, and uniformly stirring to obtain a PP type film printing body layer raw material;
(4) obtaining raw materials of the anti-skid coating layer; putting the raw materials for preparing the anti-skid coating layer in parts by weight into a stirrer, and uniformly stirring to obtain the raw materials of the anti-skid coating layer;
(5) obtaining a plastic woven cloth layer; putting raw materials for preparing a plastic woven cloth layer in parts by weight into a stirrer, uniformly stirring, heating and extruding to form a film, cooling by a water tank, cutting into strips, stretching by 5-6 times by a heating oven to form filaments, shaping and cooling, winding to form a filament ingot, finishing the production of the filament ingot, arranging the coiled filament ingot on a braiding machine according to different specifications, crosswise weaving into a barrel material, cutting into sheets by a hot knife, and winding to form a base material cloth roll;
(6) obtaining a PP type film printing body layer; placing the raw material of the PP type film printing body layer into a PP film machine for molding and manufacturing to form a film layer, and then rolling the film layer for standby; printing marks (such as water-based ink marks of various colors) specified by a customer on the rolled film layer through a printer, then tracking the color positions by over-placing the roll tracking marks, and cutting and positioning to obtain a PP type film printing body layer;
(7) Preparing a multilayer composite material; heating the base material cloth roll obtained in the step 5 and the PP type film printing body layer obtained in the step 6, extruding and coating the raw material of the adhesion coating film layer on the base material to form the adhesion coating film layer, adhering the PP type film printing body layer on the base material through the adhesion coating film layer, extruding and profiling through a composite roller of the compounding machine to prevent the two layers from separating and falling off, and coiling the compounded three-layer composite material into a roll to be used; heating the raw material of the anti-skid coating film layer, extruding and coating the raw material on a PP type film printing body layer on the three-layer composite material, carrying out extrusion molding by a composite roller of the compounding machine to form a multi-layer composite material, and playing a role of anti-skid through the anti-skid coating film layer;
(8) making bags; the multilayer composite material is processed by a forming machine, two sides of the material surface are folded, the middle of the folded part is inserted into the M-shaped folded edge in a halved manner, the two sides are folded, the folded part is compacted and formed by a press roller, a bonding coating is sprayed in the middle seam of the folded part to form a barrel-shaped bag body, polypropylene self-adhesive dots are sprayed on the M-shaped folded edge, and the M-shaped folded edge is bonded by the polypropylene self-adhesive dots so as to be convenient for sewing and edge covering; the bottom of the back bag body is sewn with the bottom edge through a sewing machine, and after the bottom edge is sewn, the bottom edge is heated at high temperature and is wrapped by the bottom edge wrapping adhesive tape.
Compared with the prior art, the invention has the beneficial effects that:
the multilayer packaging bag prepared by the invention is more environment-friendly and is extremely easy to recycle, and in addition, the bottom edge of the sewed bag body is wrapped by the bottom edge wrapping adhesive tape, so that the strength of the bag bottom is increased, and the effects of leakage prevention and scattering prevention are achieved.
Detailed Description
The technical features of the technical solutions provided by the present invention are further clearly and completely described below with reference to the specific embodiments, and the scope of protection is not limited thereto.
The words "preferred", "more preferred", and the like, in the present invention refer to embodiments of the invention that may provide certain benefits, under certain circumstances. However, other embodiments may be preferred, under the same or other circumstances. Furthermore, the recitation of one or more preferred embodiments does not imply that other embodiments are not useful, nor is it intended to exclude other embodiments from the scope of the invention.
The first embodiment is as follows:
the utility model provides a sealed shaping multilayer packaging bag in environment-friendly, multilayer packaging bag includes the bag body, the bag body is including inlayer, first middle level, second middle level, the skin that connects gradually, the inlayer is the plastics woven fabrics layer, and first middle level is the bonding and scribbles the rete, and the second middle level is PP type membrane printing body layer, and the skin is anti-skidding and scribbles the rete.
The plastic woven fabric layer comprises the following raw materials in parts by weight: 40 parts of polyethylene, 60 parts of polypropylene, 3 parts of polyethylene wax, 0.3 part of antioxidant, 0.4 part of ultraviolet absorbent and 15 parts of modifier; the antioxidant is an antioxidant 1010, the ultraviolet absorbent is an ultraviolet absorbent UV-327, and the modifier is a modifier Y681;
the preparation raw materials of the adhesive coating layer comprise the following components in parts by weight: 20 parts of polyethylene, 90 parts of polypropylene, 0.3 part of antioxidant and 0.4 part of ultraviolet absorbent; the polyethylene is polyethylene 1C7A, the polypropylene is polypropylene R500TF, and the ultraviolet absorbent is ultraviolet absorbent UV-327;
the PP type film printing body layer comprises the following raw materials in parts by weight: 20 parts of polyethylene, 90 parts of polypropylene, 0.3 part of antioxidant and 4 parts of color master batch; the polyethylene is polyethylene 1C7A, and the polypropylene is polypropylene R500 TF;
the anti-skid coating layer comprises the following raw materials in parts by weight: 40 parts of polyethylene, 60 parts of polypropylene, 0.1 part of antioxidant, 0.1 part of ultraviolet absorbent and 5 parts of linear polyethylene; the polyethylene is polyethylene 1C7A, the polypropylene is polypropylene RPP-100, the ultraviolet absorbent is ultraviolet absorbent UV-327, and the linear polyethylene is linear polyethylene LDPE 1001.
The color master batch is prepared from the following raw materials in parts by weight: 70 parts of calcium carbonate, 25 parts of polyethylene, 6 parts of light stabilizer, 3 parts of antioxidant, 4 parts of light stabilizer, 8 parts of zinc oxide, 2 parts of antioxidant and 4 parts of PE wax; the polyethylene is 7042; the light stabilizer is light stabilizer 2020, and the antioxidant is antioxidant 245; the light stabilizer is light stabilizer 327; the calcium carbonate is 500-1500 meshes.
And the PP type film printing body layer is provided with a printing mark.
The bottom of the bag body (namely the bag tail) is sewn with a bottom edge through a sewing machine, and a bottom edge sealing adhesive tape for sealing the sewn bottom edge is arranged at the sewn bottom edge.
The bottom edge sealing adhesive tape consists of a plastic woven cloth middle layer, a polypropylene coating outer layer and a high-temperature self-adhesive inner layer, and wraps the bottom edge of the bag body through high-temperature heating.
The bag body is provided with symmetrical M-shaped folded edges at two sides, polypropylene self-adhesive points are sprayed at the bag opening and the bag tail of the bag body by the M-shaped folded edges, and the M-shaped folded edges are bonded by the polypropylene self-adhesive points.
The M-shaped folded edge bonding part can be opened by applying a force more than or equal to 30N, and the M-shaped folded edge can be pressed downwards if the M-shaped folded edge bonding part is not used, so that the bonding part is reset.
The production process of the environment-friendly middle-sealed multi-layer packaging bag comprises the following steps:
(1) obtaining a plastic woven cloth layer raw material; putting the raw materials for preparing the plastic woven cloth layer in parts by weight into a stirrer, and uniformly stirring to obtain the raw materials of the plastic woven cloth layer;
(2) obtaining a raw material of an adhesive coating layer; putting raw materials for preparing the adhesive coating layer in parts by weight into a stirrer, and uniformly stirring to obtain raw materials of the adhesive coating layer;
(3) obtaining a PP type film printing body layer raw material; putting the PP type film printing body layer preparation raw material in parts by weight into a stirrer, and uniformly stirring to obtain a PP type film printing body layer raw material;
(4) obtaining raw materials of the anti-skid coating layer; putting the raw materials for preparing the anti-skid coating layer in parts by weight into a stirrer, and uniformly stirring to obtain the raw materials of the anti-skid coating layer;
(5) obtaining a plastic woven cloth layer; putting raw materials for preparing a plastic woven cloth layer in parts by weight into a stirrer, uniformly stirring, heating and extruding to form a film, cooling by a water tank, cutting into strips, stretching by 5-6 times by a heating oven to form filaments, shaping and cooling, winding to form a filament ingot, finishing the production of the filament ingot, arranging the coiled filament ingot on a braiding machine according to different specifications, crosswise weaving into a barrel material, cutting into sheets by a hot knife, and winding to form a base material cloth roll;
(6) Obtaining a PP type film printing body layer; placing the raw material of the PP type film printing body layer into a PP film machine for molding and manufacturing to form a film layer, and then rolling the film layer for standby; printing marks (such as water-based ink marks of various colors) specified by a customer on the rolled film layer through a printer, then tracking the color positions by over-placing the roll tracking marks, and cutting and positioning to obtain a PP type film printing body layer;
(7) preparing a multilayer composite material; heating the base material cloth roll obtained in the step 5 and the PP type film printing body layer obtained in the step 6, extruding and coating the raw material of the adhesion coating film layer on the base material to form the adhesion coating film layer, adhering the PP type film printing body layer on the base material through the adhesion coating film layer, extruding and profiling through a composite roller of the compounding machine to prevent the two layers from separating and falling off, and coiling the compounded three-layer composite material into a roll to be used; heating the raw material of the anti-skid coating film layer, extruding and coating the raw material on a PP type film printing body layer on the three-layer composite material, carrying out extrusion molding by a composite roller of the compounding machine to form a multi-layer composite material, and playing a role of anti-skid through the anti-skid coating film layer;
(8) making bags; the multilayer composite material is processed by a forming machine, two sides of the material surface are folded, the middle of the folded part is inserted into the M-shaped folded edge in a halved manner, the two sides are folded, the folded part is compacted and formed by a press roller, a bonding coating is sprayed in the middle seam of the folded part to form a barrel-shaped bag body, polypropylene self-adhesive dots are sprayed on the M-shaped folded edge, and the M-shaped folded edge is bonded by the polypropylene self-adhesive dots so as to be convenient for sewing and edge covering; the bottom of the back bag body is sewn with the bottom edge through a sewing machine, and after the bottom edge is sewn, the bottom edge is heated at high temperature and is wrapped by the bottom edge wrapping adhesive tape.
Example two
The utility model provides a sealed shaping multilayer packaging bag in environment-friendly, multilayer packaging bag includes the bag body, the bag body is including inlayer, first middle level, second middle level, the skin that connects gradually, the inlayer is the plastics woven fabrics layer, and first middle level is the bonding and scribbles the rete, and the second middle level is PP type membrane printing body layer, and the skin is anti-skidding and scribbles the rete.
The plastic woven fabric layer comprises the following raw materials in parts by weight: 20 parts of polyethylene, 90 parts of polypropylene, 3 parts of polyethylene wax, 0.3 part of antioxidant, 0.4 part of ultraviolet absorbent and 15 parts of modifier; the antioxidant is an antioxidant 1010, the ultraviolet absorbent is an ultraviolet absorbent UV-327, and the modifier is a modifier Y681;
the preparation raw materials of the adhesive coating layer comprise the following components in parts by weight: 40 parts of polyethylene, 60 parts of polypropylene, 0.1 part of antioxidant and 0.1 part of ultraviolet absorbent; the polyethylene is polyethylene 1C7A, the polypropylene is polypropylene R500TF, and the ultraviolet absorbent is ultraviolet absorbent UV-327;
the PP type film printing body layer comprises the following raw materials in parts by weight: 40 parts of polyethylene, 60 parts of polypropylene, 0.1 part of antioxidant and 1 part of color master batch; the polyethylene is polyethylene 1C7A, and the polypropylene is polypropylene R500 TF;
The anti-skid coating layer comprises the following raw materials in parts by weight: 20 parts of polyethylene, 90 parts of polypropylene, 0.3 part of antioxidant, 0.4 part of ultraviolet absorbent and 15 parts of linear polyethylene; the polyethylene is polyethylene 1C7A, the polypropylene is polypropylene RPP-100, the ultraviolet absorbent is ultraviolet absorbent UV-327, and the linear polyethylene is linear polyethylene LDPE 1001.
The color master batch is prepared from the following raw materials in parts by weight: 80 parts of calcium carbonate, 20 parts of polyethylene, 6 parts of light stabilizer, 3 parts of antioxidant, 4 parts of light stabilizer, 8 parts of zinc oxide, 2 parts of antioxidant and 4 parts of PE wax; the polyethylene is 7042; the light stabilizer is light stabilizer 2020, and the antioxidant is antioxidant 245; the light stabilizer is light stabilizer 327; the calcium carbonate is 500-1500 meshes.
And the PP type film printing body layer is provided with a printing mark.
The bottom of the bag body (namely the bag tail) is sewn with a bottom edge through a sewing machine, and a bottom edge sealing adhesive tape for sealing the sewn bottom edge is arranged at the sewn bottom edge.
The bottom edge sealing adhesive tape consists of a plastic woven cloth middle layer, a polypropylene coating outer layer and a high-temperature self-adhesive inner layer, and wraps the bottom edge of the bag body through high-temperature heating.
The bag body is provided with symmetrical M-shaped folded edges at two sides, polypropylene self-adhesive points are sprayed at the bag opening and the bag tail of the bag body by the M-shaped folded edges, and the M-shaped folded edges are bonded by the polypropylene self-adhesive points.
The M-shaped folded edge bonding part can be opened by applying a force more than or equal to 30N, and the M-shaped folded edge can be pressed downwards if the M-shaped folded edge bonding part is not used, so that the bonding part is reset.
The production process of the environment-friendly middle-sealed multi-layer packaging bag comprises the following steps:
(1) obtaining a plastic woven cloth layer raw material; putting the raw materials for preparing the plastic woven cloth layer in parts by weight into a stirrer, and uniformly stirring to obtain the raw materials of the plastic woven cloth layer;
(2) obtaining a raw material of an adhesive coating layer; putting raw materials for preparing the adhesive coating layer in parts by weight into a stirrer, and uniformly stirring to obtain raw materials of the adhesive coating layer;
(3) obtaining a PP type film printing body layer raw material; putting the PP type film printing body layer preparation raw material in parts by weight into a stirrer, and uniformly stirring to obtain a PP type film printing body layer raw material;
(4) obtaining raw materials of the anti-skid coating layer; putting the raw materials for preparing the anti-skid coating layer in parts by weight into a stirrer, and uniformly stirring to obtain the raw materials of the anti-skid coating layer;
(5) obtaining a plastic woven cloth layer; putting raw materials for preparing a plastic woven cloth layer in parts by weight into a stirrer, uniformly stirring, heating and extruding to form a film, cooling by a water tank, cutting into strips, stretching by 5-6 times by a heating oven to form filaments, shaping and cooling, winding to form a filament ingot, finishing the production of the filament ingot, arranging the coiled filament ingot on a braiding machine according to different specifications, crosswise weaving into a barrel material, cutting into sheets by a hot knife, and winding to form a base material cloth roll;
(6) Obtaining a PP type film printing body layer; placing the raw material of the PP type film printing body layer into a PP film machine for molding and manufacturing to form a film layer, and then rolling the film layer for standby; printing marks (such as water-based ink marks of various colors) specified by a customer on the rolled film layer through a printer, then tracking the color positions by over-placing the roll tracking marks, and cutting and positioning to obtain a PP type film printing body layer;
(7) preparing a multilayer composite material; heating the base material cloth roll obtained in the step 5 and the PP type film printing body layer obtained in the step 6, extruding and coating the raw material of the adhesion coating film layer on the base material to form the adhesion coating film layer, adhering the PP type film printing body layer on the base material through the adhesion coating film layer, extruding and profiling through a composite roller of the compounding machine to prevent the two layers from separating and falling off, and coiling the compounded three-layer composite material into a roll to be used; heating the raw material of the anti-skid coating film layer, extruding and coating the raw material on a PP type film printing body layer on the three-layer composite material, carrying out extrusion molding by a composite roller of the compounding machine to form a multi-layer composite material, and playing a role of anti-skid through the anti-skid coating film layer;
(8) making bags; the multilayer composite material is processed by a forming machine, two sides of the material surface are folded, the middle of the folded part is inserted into the M-shaped folded edge in a halved manner, the two sides are folded, the folded part is compacted and formed by a press roller, a bonding coating is sprayed in the middle seam of the folded part to form a barrel-shaped bag body, polypropylene self-adhesive dots are sprayed on the M-shaped folded edge, and the M-shaped folded edge is bonded by the polypropylene self-adhesive dots so as to be convenient for sewing and edge covering; the bottom of the back bag body is sewn with the bottom edge through a sewing machine, and after the bottom edge is sewn, the bottom edge is heated at high temperature and is wrapped by the bottom edge wrapping adhesive tape.
EXAMPLE III
The utility model provides a sealed shaping multilayer packaging bag in environment-friendly, multilayer packaging bag includes the bag body, the bag body is including inlayer, first middle level, second middle level, the skin that connects gradually, the inlayer is the plastics woven fabrics layer, and first middle level is the bonding and scribbles the rete, and the second middle level is PP type membrane printing body layer, and the skin is anti-skidding and scribbles the rete.
The plastic woven fabric layer comprises the following raw materials in parts by weight: 35 parts of polyethylene, 80 parts of polypropylene, 3 parts of polyethylene wax, 0.1 part of antioxidant, 0.2 part of ultraviolet absorbent and 13 parts of modifier; the antioxidant is an antioxidant 1010, the ultraviolet absorbent is an ultraviolet absorbent UV-327, and the modifier is a modifier Y681;
the preparation raw materials of the adhesive coating layer comprise the following components in parts by weight: 35 parts of polyethylene, 85 parts of polypropylene, 0.15 part of antioxidant and 0.3 part of ultraviolet absorbent; the polyethylene is polyethylene 1C7A, the polypropylene is polypropylene R500TF, and the ultraviolet absorbent is ultraviolet absorbent UV-327;
the PP type film printing body layer comprises the following raw materials in parts by weight: 30 parts of polyethylene, 75 parts of polypropylene, 0.3 part of antioxidant and 3 parts of color master batch; the polyethylene is polyethylene 1C7A, and the polypropylene is polypropylene R500 TF;
The anti-skid coating layer comprises the following raw materials in parts by weight: 35 parts of polyethylene, 70 parts of polypropylene, 0.2 part of antioxidant, 0.4 part of ultraviolet absorbent and 15 parts of linear polyethylene; the polyethylene is polyethylene 1C7A, the polypropylene is polypropylene RPP-100, the ultraviolet absorbent is ultraviolet absorbent UV-327, and the linear polyethylene is linear polyethylene LDPE 1001.
The color master batch is prepared from the following raw materials in parts by weight: 80 parts of calcium carbonate, 20 parts of polyethylene, 6 parts of light stabilizer, 3 parts of antioxidant, 4 parts of light stabilizer, 8 parts of zinc oxide, 2 parts of antioxidant and 4 parts of PE wax; the polyethylene is 7042; the light stabilizer is light stabilizer 2020, and the antioxidant is antioxidant 245; the light stabilizer is light stabilizer 327; the calcium carbonate is 500-1500 meshes.
And the PP type film printing body layer is provided with a printing mark.
The bottom of the bag body (namely the bag tail) is sewn with a bottom edge through a sewing machine, and a bottom edge sealing adhesive tape for sealing the sewn bottom edge is arranged at the sewn bottom edge.
The bottom edge sealing adhesive tape consists of a plastic woven cloth middle layer, a polypropylene coating outer layer and a high-temperature self-adhesive inner layer, and wraps the bottom edge of the bag body through high-temperature heating.
The bag body is provided with symmetrical M-shaped folded edges at two sides, polypropylene self-adhesive points are sprayed at the bag opening and the bag tail of the bag body by the M-shaped folded edges, and the M-shaped folded edges are bonded by the polypropylene self-adhesive points.
The M-shaped folded edge bonding part can be opened by applying a force more than or equal to 30N, and the M-shaped folded edge can be pressed downwards if the M-shaped folded edge bonding part is not used, so that the bonding part is reset.
The production process of the environment-friendly middle-sealed multi-layer packaging bag comprises the following steps:
(1) obtaining a plastic woven cloth layer raw material; putting the raw materials for preparing the plastic woven cloth layer in parts by weight into a stirrer, and uniformly stirring to obtain the raw materials of the plastic woven cloth layer;
(2) obtaining a raw material of an adhesive coating layer; putting raw materials for preparing the adhesive coating layer in parts by weight into a stirrer, and uniformly stirring to obtain raw materials of the adhesive coating layer;
(3) obtaining a PP type film printing body layer raw material; putting the PP type film printing body layer preparation raw material in parts by weight into a stirrer, and uniformly stirring to obtain a PP type film printing body layer raw material;
(4) obtaining raw materials of the anti-skid coating layer; putting the raw materials for preparing the anti-skid coating layer in parts by weight into a stirrer, and uniformly stirring to obtain the raw materials of the anti-skid coating layer;
(5) obtaining a plastic woven cloth layer; putting raw materials for preparing a plastic woven cloth layer in parts by weight into a stirrer, uniformly stirring, heating and extruding to form a film, cooling by a water tank, cutting into strips, stretching by 5-6 times by a heating oven to form filaments, shaping and cooling, winding to form a filament ingot, finishing the production of the filament ingot, arranging the coiled filament ingot on a braiding machine according to different specifications, crosswise weaving into a barrel material, cutting into sheets by a hot knife, and winding to form a base material cloth roll;
(6) Obtaining a PP type film printing body layer; placing the raw material of the PP type film printing body layer into a PP film machine for molding and manufacturing to form a film layer, and then rolling the film layer for standby; printing marks (such as water-based ink marks of various colors) specified by a customer on the rolled film layer through a printer, then tracking the color positions by over-placing the roll tracking marks, and cutting and positioning to obtain a PP type film printing body layer;
(7) preparing a multilayer composite material; heating the base material cloth roll obtained in the step 5 and the PP type film printing body layer obtained in the step 6, extruding and coating the raw material of the adhesion coating film layer on the base material to form the adhesion coating film layer, adhering the PP type film printing body layer on the base material through the adhesion coating film layer, extruding and profiling through a composite roller of the compounding machine to prevent the two layers from separating and falling off, and coiling the compounded three-layer composite material into a roll to be used; heating the raw material of the anti-skid coating film layer, extruding and coating the raw material on a PP type film printing body layer on the three-layer composite material, carrying out extrusion molding by a composite roller of the compounding machine to form a multi-layer composite material, and playing a role of anti-skid through the anti-skid coating film layer;
(8) making bags; the multilayer composite material is processed by a forming machine, two sides of the material surface are folded, the middle of the folded part is inserted into the M-shaped folded edge in a halved manner, the two sides are folded, the folded part is compacted and formed by a press roller, a bonding coating is sprayed in the middle seam of the folded part to form a barrel-shaped bag body, polypropylene self-adhesive dots are sprayed on the M-shaped folded edge, and the M-shaped folded edge is bonded by the polypropylene self-adhesive dots so as to be convenient for sewing and edge covering; the bottom of the back bag body is sewn with the bottom edge through a sewing machine, and after the bottom edge is sewn, the bottom edge is heated at high temperature and is wrapped by the bottom edge wrapping adhesive tape.
Compared with the prior art, the invention has the beneficial effects that: the multilayer packaging bag prepared by the invention is more environment-friendly and is extremely easy to recycle, and in addition, the bottom edge of the sewed bag body is wrapped by the bottom edge wrapping adhesive tape, so that the strength of the bag bottom is increased, and the effects of leakage prevention and scattering prevention are achieved.
It is to be understood that the invention is not limited to the examples described above, but that modifications and variations are possible in light of the above teachings, for example, by routine/routine replacement of various elements of the invention, within the purview of one of ordinary skill in the art and all such modifications and variations are intended to fall within the scope of the invention as defined by the appended claims.

Claims (9)

1. The utility model provides a sealed shaping multilayer packaging bag in environment-friendly, multilayer packaging bag is including the bag body, its characterized in that: the bag body comprises an inner layer, a first middle layer, a second middle layer and an outer layer which are sequentially connected, wherein the inner layer is a plastic woven fabric layer, the first middle layer is an adhesive coating film layer, the second middle layer is a PP type film printing body layer, and the outer layer is an anti-skid coating film layer.
2. The environment-friendly center-sealed multilayer packaging bag as claimed in claim 1, wherein: the plastic woven fabric layer comprises the following raw materials in parts by weight: 20-40 parts of polyethylene, 60-90 parts of polypropylene, 3 parts of polyethylene wax, 0.1-0.3 part of antioxidant, 0.1-0.4 part of ultraviolet absorbent and 5-15 parts of modifier; the antioxidant is an antioxidant 1010, the ultraviolet absorbent is an ultraviolet absorbent UV-327, and the modifier is a modifier Y681;
The preparation raw materials of the adhesive coating layer comprise the following components in parts by weight: 20-40 parts of polyethylene, 60-90 parts of polypropylene, 0.1-0.3 part of antioxidant and 0.1-0.4 part of ultraviolet absorbent; the polyethylene is polyethylene 1C7A, the polypropylene is polypropylene R500TF, and the ultraviolet absorbent is ultraviolet absorbent UV-327;
the PP type film printing body layer comprises the following raw materials in parts by weight: 20-40 parts of polyethylene, 60-90 parts of polypropylene, 0.1-0.3 part of antioxidant and 1-4 parts of color master batch; the polyethylene is polyethylene 1C7A, and the polypropylene is polypropylene R500 TF;
the anti-skid coating layer comprises the following raw materials in parts by weight: 20-40 parts of polyethylene, 60-90 parts of polypropylene, 0.1-0.3 part of antioxidant, 0.1-0.4 part of ultraviolet absorbent and 5-15 parts of linear polyethylene; the polyethylene is polyethylene 1C7A, the polypropylene is polypropylene RPP-100, the ultraviolet absorbent is ultraviolet absorbent UV-327, and the linear polyethylene is linear polyethylene LDPE 1001.
3. The environment-friendly center-sealed multilayer packaging bag as claimed in claim 2, wherein: the color master batch is prepared from the following raw materials in parts by weight: 70-90 parts of calcium carbonate, 15-25 parts of polyethylene, 6 parts of light stabilizer, 3 parts of antioxidant, 4 parts of light stabilizer, 8 parts of zinc oxide, 2 parts of antioxidant and 4 parts of PE wax; the polyethylene is 7042; the light stabilizer is light stabilizer 2020, and the antioxidant is antioxidant 245; the light stabilizer is light stabilizer 327; the calcium carbonate is 500-1500 meshes.
4. The environment-friendly center-sealed multilayer packaging bag as claimed in claim 1, wherein: and the PP type film printing body layer is provided with a printing mark.
5. The environment-friendly center-sealed multilayer packaging bag as claimed in claim 1, wherein: the bottom of the bag body (namely the bag tail) is sewn with a bottom edge through a sewing machine, and a bottom edge sealing adhesive tape for sealing the sewn bottom edge is arranged at the sewn bottom edge.
6. The environmentally friendly center-sealed multilayer packaging bag according to claim 5, wherein: the bottom edge sealing adhesive tape consists of a plastic woven cloth middle layer, a polypropylene coating outer layer and a high-temperature self-adhesive inner layer, and wraps the bottom edge of the bag body through high-temperature heating.
7. The environment-friendly center-sealed multilayer packaging bag as claimed in claim 1, wherein: the bag body is provided with symmetrical M-shaped folded edges at two sides, polypropylene self-adhesive points are sprayed at the bag opening and the bag tail of the bag body by the M-shaped folded edges, and the M-shaped folded edges are bonded by the polypropylene self-adhesive points.
8. The environmentally friendly center-sealed multilayer packaging bag according to claim 7, wherein: the M-shaped folded edge bonding part can be opened by applying a force more than or equal to 30N.
9. The production process of the environment-friendly middle-sealed multi-layer packaging bag according to claim 1, wherein the production process comprises the following steps: the method comprises the following steps:
(1) obtaining a plastic woven cloth layer raw material; putting the raw materials for preparing the plastic woven cloth layer in parts by weight into a stirrer, and uniformly stirring to obtain the raw materials of the plastic woven cloth layer;
(2) obtaining a raw material of an adhesive coating layer; putting raw materials for preparing the adhesive coating layer in parts by weight into a stirrer, and uniformly stirring to obtain raw materials of the adhesive coating layer;
(3) obtaining a PP type film printing body layer raw material; putting the PP type film printing body layer preparation raw material in parts by weight into a stirrer, and uniformly stirring to obtain a PP type film printing body layer raw material;
(4) obtaining raw materials of the anti-skid coating layer; putting the raw materials for preparing the anti-skid coating layer in parts by weight into a stirrer, and uniformly stirring to obtain the raw materials of the anti-skid coating layer;
(5) obtaining a plastic woven cloth layer; putting raw materials for preparing a plastic woven cloth layer in parts by weight into a stirrer, uniformly stirring, heating and extruding to form a film, cooling by a water tank, cutting into strips, stretching by 5-6 times by a heating oven to form filaments, shaping and cooling, winding to form a filament ingot, finishing the production of the filament ingot, arranging the coiled filament ingot on a braiding machine according to different specifications, crosswise weaving into a barrel material, cutting into sheets by a hot knife, and winding to form a base material cloth roll;
(6) Obtaining a PP type film printing body layer; placing the raw material of the PP type film printing body layer into a PP film machine for molding and manufacturing to form a film layer, and then rolling the film layer for standby; printing marks (such as water-based ink marks of various colors) specified by a customer on the rolled film layer through a printer, then tracking the color positions by over-placing the roll tracking marks, and cutting and positioning to obtain a PP type film printing body layer;
(7) preparing a multilayer composite material; heating the base material cloth roll obtained in the step 5 and the PP type film printing body layer obtained in the step 6, extruding and coating the raw material of the adhesion coating film layer on the base material to form the adhesion coating film layer, adhering the PP type film printing body layer on the base material through the adhesion coating film layer, extruding and profiling through a composite roller of the compounding machine to prevent the two layers from separating and falling off, and coiling the compounded three-layer composite material into a roll to be used; heating the raw material of the anti-skid coating film layer, extruding and coating the raw material on a PP type film printing body layer on the three-layer composite material, carrying out extrusion molding by a composite roller of the compounding machine to form a multi-layer composite material, and playing a role of anti-skid through the anti-skid coating film layer;
(8) making bags; the multilayer composite material is processed by a forming machine, two sides of the material surface are folded, the middle of the folded part is inserted into the M-shaped folded edge in a halved manner, the two sides are folded, the folded part is compacted and formed by a press roller, a bonding coating is sprayed in the middle seam of the folded part to form a barrel-shaped bag body, polypropylene self-adhesive dots are sprayed on the M-shaped folded edge, and the M-shaped folded edge is bonded by the polypropylene self-adhesive dots so as to be convenient for sewing and edge covering; the bottom of the back bag body is sewn with the bottom edge through a sewing machine, and after the bottom edge is sewn, the bottom edge is heated at high temperature and is wrapped by the bottom edge wrapping adhesive tape.
CN202010612240.2A 2020-06-30 2020-06-30 Environment-friendly middle-sealed formed multilayer packaging bag and production process thereof Pending CN111846574A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113580662A (en) * 2021-07-08 2021-11-02 业凯包装科技(苏州)有限公司 Printing, corona and forming production line for manufacturing paper-plastic products

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113580662A (en) * 2021-07-08 2021-11-02 业凯包装科技(苏州)有限公司 Printing, corona and forming production line for manufacturing paper-plastic products
CN113580662B (en) * 2021-07-08 2022-12-27 业凯包装科技(苏州)有限公司 Printing, corona and forming production line for manufacturing paper-plastic products

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