CN117382289A - Method for preparing packing belt - Google Patents
Method for preparing packing belt Download PDFInfo
- Publication number
- CN117382289A CN117382289A CN202310090039.6A CN202310090039A CN117382289A CN 117382289 A CN117382289 A CN 117382289A CN 202310090039 A CN202310090039 A CN 202310090039A CN 117382289 A CN117382289 A CN 117382289A
- Authority
- CN
- China
- Prior art keywords
- adhesive
- packing belt
- kraft paper
- layer
- strapping
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000012856 packing Methods 0.000 title claims abstract description 163
- 238000000034 method Methods 0.000 title claims description 40
- 230000001070 adhesive effect Effects 0.000 claims abstract description 145
- 239000000853 adhesive Substances 0.000 claims abstract description 139
- 239000010410 layer Substances 0.000 claims abstract description 105
- 239000002655 kraft paper Substances 0.000 claims abstract description 102
- 238000000576 coating method Methods 0.000 claims abstract description 52
- 239000011248 coating agent Substances 0.000 claims abstract description 50
- 239000000758 substrate Substances 0.000 claims abstract description 37
- 239000012790 adhesive layer Substances 0.000 claims abstract description 36
- 238000004519 manufacturing process Methods 0.000 claims abstract description 36
- 238000002360 preparation method Methods 0.000 claims abstract description 22
- 239000011241 protective layer Substances 0.000 claims description 29
- 239000000463 material Substances 0.000 claims description 24
- 239000004831 Hot glue Substances 0.000 claims description 22
- 239000003292 glue Substances 0.000 claims description 19
- 230000001681 protective effect Effects 0.000 claims description 19
- 238000007639 printing Methods 0.000 claims description 14
- 238000001816 cooling Methods 0.000 claims description 11
- 239000007788 liquid Substances 0.000 claims description 9
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 claims description 6
- 239000005977 Ethylene Substances 0.000 claims description 6
- 239000002253 acid Substances 0.000 claims description 6
- 239000000839 emulsion Substances 0.000 claims description 6
- 150000002148 esters Chemical class 0.000 claims description 6
- 238000003825 pressing Methods 0.000 claims description 6
- 239000012939 laminating adhesive Substances 0.000 claims description 5
- 239000007787 solid Substances 0.000 claims description 4
- 125000005396 acrylic acid ester group Chemical group 0.000 claims description 3
- 230000008569 process Effects 0.000 description 24
- 238000001723 curing Methods 0.000 description 19
- 238000004026 adhesive bonding Methods 0.000 description 18
- 230000003068 static effect Effects 0.000 description 17
- 239000000835 fiber Substances 0.000 description 14
- 239000000123 paper Substances 0.000 description 12
- 238000005096 rolling process Methods 0.000 description 12
- 239000004033 plastic Substances 0.000 description 10
- 229920003023 plastic Polymers 0.000 description 10
- 238000005520 cutting process Methods 0.000 description 8
- 238000004806 packaging method and process Methods 0.000 description 8
- 239000004743 Polypropylene Substances 0.000 description 6
- 238000012937 correction Methods 0.000 description 6
- 238000011084 recovery Methods 0.000 description 6
- 238000007790 scraping Methods 0.000 description 6
- 238000010438 heat treatment Methods 0.000 description 5
- 230000008030 elimination Effects 0.000 description 4
- 238000003379 elimination reaction Methods 0.000 description 4
- 238000010030 laminating Methods 0.000 description 4
- 239000002994 raw material Substances 0.000 description 4
- 230000001360 synchronised effect Effects 0.000 description 4
- 239000002699 waste material Substances 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 229920001577 copolymer Polymers 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- 239000000178 monomer Substances 0.000 description 3
- 238000000016 photochemical curing Methods 0.000 description 3
- 238000003892 spreading Methods 0.000 description 3
- 230000007480 spreading Effects 0.000 description 3
- 238000004804 winding Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- -1 polypropylene Polymers 0.000 description 2
- 229920001155 polypropylene Polymers 0.000 description 2
- 238000004513 sizing Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000005491 wire drawing Methods 0.000 description 1
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
- B65D63/00—Flexible elongated elements, e.g. straps, for bundling or supporting articles
- B65D63/10—Non-metallic straps, tapes, or bands; Filamentary elements, e.g. strings, threads or wires; Joints between ends thereof
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B29/00—Layered products comprising a layer of paper or cardboard
- B32B29/002—Layered products comprising a layer of paper or cardboard as the main or only constituent of a layer, which is next to another layer of the same or of a different material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B29/00—Layered products comprising a layer of paper or cardboard
- B32B29/06—Layered products comprising a layer of paper or cardboard specially treated, e.g. surfaced, parchmentised
-
- 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
- B32B38/00—Ancillary operations in connection with laminating processes
-
- 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
- B32B38/00—Ancillary operations in connection with laminating processes
- B32B2038/0052—Other operations not otherwise provided for
- B32B2038/0076—Curing, vulcanising, cross-linking
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Package Frames And Binding Bands (AREA)
Abstract
The invention relates to a preparation method of a packing belt, which comprises the following steps: and S1, manufacturing a packing belt body. Step S1 includes step S11 and step S12: s11, manufacturing a substrate layer (10) of the packing belt, wherein the substrate layer comprises a plurality of layers of kraft paper (11) pressed to a preset thickness; and S12, manufacturing an adhesive layer (20) of the packing belt, wherein the adhesive layer comprises the steps of respectively coating a first adhesive on a first surface of the substrate layer (10) and a second surface opposite to the first surface to form two layers of adhesive layers (20). The packing belt prepared by the preparation method of the packing belt can be recycled after being used, and the full utilization of resources is facilitated.
Description
Technical Field
The invention relates to the technical field of packing belts, in particular to a preparation method of a packing belt.
Background
PP, the academic polypropylene, is a lighter one of common plastics, and the main material of the PP packing belt is polypropylene wiredrawing resin, and has been widely used in various fields due to the advantages of good plasticity, strong breaking tension, bending resistance, light specific gravity, convenient use and the like; however, the PP packaging belt is required to be produced through high-temperature extrusion, so that more energy is consumed, and the waste of the plastic belt is difficult to degrade or even cannot degrade, so that the environment is damaged, and the PP packaging belt is quite not environment-friendly.
The single-sided adhesive non-self-adhesive kraft hot melt adhesive tape is also called strap paper or paper strap or bundling paper tape, and the paper is single-layer kraft paper, is mainly used for bundling small-size, small-size and light-weight small-article packages which do not have requirements on tension, such as bundling of the strap of cash and cards, and the like, and can not be used for bundling goods or products which are packaged by standard cartons or trays and the like and are required by tension.
It should be noted that the information disclosed in the background section of the present invention is only for increasing the understanding of the general background of the present invention and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person skilled in the art.
Disclosure of Invention
The invention provides a preparation method of a packing belt, which can reduce plastic pollution caused by production of the packing belt and increase the tensile property of the packing belt.
According to one aspect of the present invention, there is provided a strapping tape manufacturing method comprising:
step S1, manufacturing a packing belt body, which comprises the following steps:
s11, manufacturing a substrate layer of the packing belt, wherein the substrate layer comprises a plurality of layers of kraft paper which are pressed to a preset thickness; and
and S12, manufacturing an adhesive layer of the packing belt, wherein the adhesive layer comprises the steps of respectively coating a first adhesive on a first surface of the substrate layer and a second surface opposite to the first surface to form two adhesive layers.
In some embodiments, step S11 includes:
providing n layers of kraft paper;
coating a second adhesive on opposite sides of two adjacent kraft paper layers; and
and pressing n layers of kraft paper to a preset thickness to form a substrate layer, and bonding two adjacent layers of kraft paper through a second adhesive.
In some embodiments, n has a value of 3, 4, or 5.
In some embodiments, step S11 further comprises: the surface of the kraft paper is subjected to a static-removing treatment prior to the application of the second adhesive.
In some embodiments, step S12 further comprises: the adhesive layer is subjected to a cooling treatment so that the surface temperature thereof is reduced to 35 ℃ or lower.
In some embodiments, the strapping tape preparation method further comprises:
and S2, slitting the packing belt body to form a plurality of packing belt units.
In some embodiments, the strapping tape preparation method further comprises:
and S4, coating a protective material on the surface of the bonding layer, which is far away from the substrate layer, so as to form a protective layer.
In some embodiments, the strapping tape preparation method further comprises:
and step S3, printing a characteristic mark on the surface of the adhesive layer, which is far away from the substrate layer, before the step S4 is performed.
In some embodiments, the protective material comprises a photo-curable glue.
In some embodiments, the strapping tape preparation method further comprises:
and S5, performing light curing treatment on the protective layer.
In some embodiments, the first adhesive has a coating thickness of 0.02 to 0.03mm.
In some embodiments, the first adhesive comprises an EVA hot melt adhesive.
In some embodiments, step S12 further comprises: the first adhesive is heated to convert the first adhesive from a solid state to a liquid state before coating it.
In some embodiments, the second adhesive comprises a paper backing adhesive, a monomeric acid ester ethylene, an acrylic acid ester co-emulsion, or an EVA hot melt adhesive.
Based on the technical scheme, the packing belt is manufactured by taking the multilayer kraft paper as the raw material, compared with the packing belt manufactured by taking plastics as the raw material in the related art, the packing belt can reduce plastic pollution, and the manufactured packing belt can be recycled after being used, so that the full utilization of resources is facilitated; in addition, through pressfitting multilayer kraft paper, can let the fibre of multilayer kraft paper realize supporting each other, increase the hardness and the tensile strength of packing area for the trafficability characteristic of packing area in the packing process is better. And the first adhesive is coated on the first surface of the substrate layer and the second surface opposite to the first surface to form two layers of adhesive layers, so that the double-sided adhesive function of the packing belt can be realized, and the packaging belt is favorable for adapting to the packing requirements of different packaged articles.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiments of the invention and together with the description serve to explain the invention and do not constitute a limitation on the invention. In the drawings:
FIG. 1 is a schematic view showing the structure of a three-layer kraft packing belt in one embodiment of the packing belt preparing method of the present invention;
FIG. 2 is a schematic view showing the structure of a four-ply kraft packing belt in one embodiment of the method for producing a packing belt according to the invention;
FIG. 3 is a schematic view showing the structure of a three-layer kraft packing belt in another embodiment of the packing belt preparing method of the present invention;
FIG. 4 is a schematic view showing the structure of a four-ply kraft packing belt in still another embodiment of the packing belt preparing method of the present invention;
FIG. 5 is a schematic view showing the structure of a two-ply kraft packing belt in one embodiment of the method for producing a packing belt of the present invention;
FIG. 6 shows a schematic view of the structure of a two-ply kraft packing belt in another embodiment of the method for producing a packing belt of the invention.
In the figure:
10. a base layer; 11. kraft paper; 20. an adhesive layer; 30. a protective layer; 40. and (5) characteristic identification.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments. It will be apparent that the described embodiments are only some, but not all, embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be understood that the terms "center," "lateral," "longitudinal," "front," "rear," "left," "right," "upper," "lower," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present invention and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the scope of the present invention.
Referring to fig. 1 to 6, in some embodiments of the method for manufacturing a strapping tape provided by the present invention, the method for manufacturing a strapping tape includes: and S1, manufacturing a packing belt body.
Specifically, step S1 includes step S11 and step S12:
step S11, manufacturing a basal body layer 10 of the packing belt, which comprises the steps of pressing a plurality of kraft paper 11 to a preset thickness;
step S12, manufacturing the adhesive layer 20 of the packing belt includes coating a first adhesive on a first surface and a second surface opposite to the first surface of the substrate layer 10, respectively, to form two adhesive layers 20.
In the above embodiment, the kraft paper 11 includes the long fiber recovery kraft paper or the short fiber recovery kraft paper, the long fiber recovery kraft paper and the short fiber recovery kraft paper can be combined for use, so as to realize the full utilization of the recovery material, and the recovery and the reutilization can be performed after the packing belt is used, and compared with the packing belt made of plastics as raw materials in the related art, the invention can remarkably reduce the pollution of plastics; in addition, through pressfitting multilayer kraft paper 11, can let the fibre of multilayer kraft paper 11 realize supporting each other, increase the hardness and the tensile strength of packing area for the trafficability characteristic of packing area in the packing process is better. The thickness of the laminated kraft paper 11 can be adjusted according to the thickness requirement of the packing belt in practical application, for example, the thickness of the packing belt which is common at present is in the range of 0.55-0.75 mm, and the thickness of the laminated kraft paper 11 can be adjusted by selecting kraft papers 11 with different thicknesses, changing the pressure value in the lamination process, and the like.
In the above embodiment, the adhesive layer 20 is a layer with an adhesive effect in the packing belt, and the first adhesive is coated on the first surface of the substrate layer 10 and the second surface opposite to the first surface to form two layers of adhesive layers 20, so that the double-sided adhesive function of the packing belt can be realized, which is beneficial to adapting to the packing requirements of different packing articles. The specific type of the first adhesive can be selected according to factors such as the use environment and the use working condition of the packing belt.
The packing belt prepared by the preparation method of the packing belt can meet the packing requirements of various different packing articles, for example, the packing belt can be used for packing some articles with external packing boxes and packing bags, or packing and bundling packing cartons, pallet goods and the like.
Referring to fig. 1 to 6, in some embodiments, step S11 includes:
providing n layers of kraft paper 11;
coating a second adhesive on opposite sides of two adjacent kraft paper 11; and
the n kraft paper 11 is laminated to a predetermined thickness to form the base layer 10, and the adjacent two kraft papers 11 are bonded by the second adhesive.
In the above embodiment, the two adjacent kraft paper layers 11 are bonded by the second adhesive, and the fibers of the two adjacent kraft paper layers 11 can be strongly supported by the second adhesive, thereby further improving the hardness and tensile strength of the packing belt. The specific type of the second adhesive can be selected according to factors such as the use environment and the use working condition of the packing belt, and the coating thickness of the second adhesive can be adjusted according to the self adhesive property, the total thickness requirement of the packing belt and the like.
In the above embodiment, the application of the first adhesive and the second adhesive may be performed manually or by a coater, for example, a coater having a multi-layer conveyor line and a plurality of coating rollers may be used to achieve synchronous conveyance of the multi-layer kraft paper 11 and synchronous application of the multi-layer sizing material, thereby improving the production efficiency of the strapping tape.
The applicant has found in practice that the number of plies of kraft paper 11 affects the tensile strength of the final strapping band. Referring to fig. 1-4, in some embodiments, n has a value of 3, 4, or 5, and in some embodiments, n has a value of 2, as shown in fig. 5-6.
The applicant finds through many times of tests that when the number of layers of kraft paper 11 is greater than or equal to 3, the maximum tensile force value that the final packing belt can bear is larger, so that the packing belt can meet common packing requirements, can be used in the packing process of a packer, and when the number of layers of kraft paper 11 is 2, the maximum tensile force value that the final packing belt can bear is smaller, so that the packing belt can be used for packing articles with low requirements on binding force, tensile force and the like.
In some embodiments, step S1 further comprises:
step S12, before the second adhesive is applied, the surface of kraft paper 11 is subjected to static-removing treatment.
Through carrying out the static elimination to the surface of kraft paper 11 and handling, can avoid the static that produces in the transportation process of kraft paper 11 to influence the coating process of first adhesive and second adhesive in the follow-up step to guarantee to realize closely laminating between kraft paper 11 and first adhesive and the second adhesive, guarantee adhesion between two-layer adjacent kraft paper 11, improve adhesive linkage 20 roughness and smoothness, and then ensure the adhesive property and the operational reliability of packing area.
In some embodiments, step S12 further comprises: the adhesive layer 20 is subjected to a cooling treatment so that the surface temperature thereof is reduced to 35 ℃ or lower.
By cooling the adhesive layer 20, the adhesive layer can be cooled down rapidly, so that the viscosity is reduced, the curing to a certain extent is realized, the follow-up processes such as processing and packaging are facilitated, and the overall production time of the packaging belt is shortened.
In some embodiments, the strapping tape preparation method further comprises:
and S2, slitting the packing belt body to form a plurality of packing belt units.
The method for manufacturing the packing belt body and then cutting the packing belt body to form a plurality of packing belt units can realize the production of packing belts with various specifications in one production process. For example, the packing belt body can be cut to form a plurality of packing belt units with different widths of 5mm, 9mm, 12mm, 14mm, 15mm, 16mm and the like so as to correspond to the packing of products with different requirements.
In some embodiments, the strapping tape preparation method further comprises:
in step S4, a protective material is coated on the surface of the adhesive layer 20 away from the base layer 10 to form the protective layer 30.
The protective layer 30 can prevent the packing belt body from being wet and water, ensure the reliability of the packing belt, improve the smoothness of the surface of the packing belt, enable the winding and unwinding processes of the packing belt to be smoother, enable the packing belt to be smoothly threaded in the packing and inserting and tightening processes, and improve the glossiness of the surface of the packing belt.
In some embodiments, the strapping tape preparation method further comprises:
step S3, before step S4, the feature mark 40 is printed on the surface of the adhesive layer 20 away from the base layer 10.
In the above embodiment, the content of the feature identifier 40 may be selected according to actual needs, so as to realize customized production of the packing belt, and since the protective layer 30 is generally transparent, the feature identifier 40 printed on the packing belt body may be presented through the protective layer 30. For example, company information, product characteristics, contact information, environmental protection identification or recycling identification, etc. may be printed to the surface of the adhesive layer 20.
In some embodiments, the protective material comprises a photo-curable glue.
The photo-curing adhesive has the advantages of good bonding effect, high bonding strength, good flexibility, high temperature resistance, good humidity resistance and the like, and compared with the traditional thermosetting adhesive, the energy consumed in the curing process of the photo-curing adhesive is greatly reduced, thereby being beneficial to saving the production cost.
In some embodiments, the strapping tape preparation method further comprises:
step S5, performing a photo-curing treatment on the protective layer 30.
In the above embodiment, the photo-curable adhesive coated on the surface of the base layer 10 is irradiated with ultraviolet light to be cured, wherein different curing effects can be achieved by changing parameters such as irradiation power, irradiation time, and the like of the ultraviolet light.
In some embodiments, the first adhesive has a coating thickness of 0.02 to 0.03mm.
The thickness of the first adhesive may be adjusted according to the adhesive property of the first adhesive, the surface characteristics of kraft paper 11, the viscosity requirement of the strapping tape, and the thickness requirement.
In some embodiments, the first adhesive comprises an EVA hot melt adhesive.
The EVA hot melt adhesive has the characteristics of quick solidification, low pollution, strong adhesive force and the like, has good adhesive property, flexibility, heating fluidity and cold resistance, and can provide excellent adhesive property and stable quality for the packaging belt.
EVA hot melt adhesives are solid at normal temperature, and commercially available EVA hot melt adhesives are generally in the form of granules, flakes or strips.
Thus, in some embodiments, step S12 further comprises: the first adhesive is heated to convert the first adhesive from a solid state to a liquid state before coating it.
The first adhesive is heated to reach proper temperature and fluidity, so that the coating uniformity of the first adhesive is ensured, and the quality of the packing belt is ensured.
The second adhesive is applied between the layers of kraft paper 11 and does not require as much performance as the first adhesive, so the second adhesive may be used with some conventional aqueous sizing materials.
For example, in some embodiments, the second adhesive comprises a laminating adhesive, a monomeric acid ester ethylene, an acrylic acid ester co-emulsion, or an EVA hot melt adhesive.
Alternatively, in other embodiments, the first adhesive and the second adhesive are both EVA hot melt adhesives, and during the preparation of the strapping tape, the first adhesive is heated and insulated by the first glue tank, and the second adhesive is heated and insulated by the second glue tank.
Wherein EVA hot melt adhesives with different properties can be selected according to production requirements, for example, a first adhesive can be an EVA hot melt adhesive with shorter curing, and a second adhesive can be an EVA hot melt adhesive with longer curing.
The following describes the operation of several embodiments of the strapping tape preparation method of the present invention:
in the following embodiments, the preparation of the packing belt is performed by a packing belt manufacturing apparatus, which includes a paper feeding portion, a deviation correcting device, a static eliminating device, a first glue box, a second glue box, a first glue coating portion, a pressing portion, a second glue coating portion, a cooling device, a dividing and cutting machine, a character marking wheel set, a third glue coating portion, a curing portion and a winding machine.
Embodiment one:
1. three rolls of kraft paper 11 with the thickness of 0.18 plus or minus 0.01mm are selected to be put into a paper feeding part;
2. the second adhesive and the first adhesive are respectively put into a first adhesive box and a second adhesive box and heated to 185 ℃ to be melted into a liquid state, and the adhesive outlet thickness of the adhesive coating head is adjusted to be 0.02-0.03 mm;
3. conveying the kraft paper 11 to a deviation correcting device to finish deviation correction, so that three layers of kraft paper 11 are synchronously and parallelly conveyed;
4. conveying kraft paper 11 to a static removing device to remove static on the surface;
5. conveying kraft paper 11 to a first gluing part, and spreading a second adhesive on the surface of the kraft paper 11 through a gluing head to finish the coating of the second adhesive between two adjacent layers of kraft paper 11;
6. the three-layer kraft paper 11, on which the coating of the second adhesive is completed, is conveyed to the nip and laminated to a preset thickness, forming the base layer 10;
7. conveying the substrate layer 10 to a second gluing part, and scraping and coating a first adhesive on the surface of the substrate layer 10 through a gluing head to form two adhesive layers 20;
8. the surface temperature of the bonding layer 20 is reduced to below 35 ℃ through a cooling device, so that the manufacturing of the packing belt body is completed;
9. dividing the packing belt body into packing belt units with different widths (5 mm, 9mm, 12mm, 14mm, 15mm, 16mm and the like) by a dividing and cutting machine;
10. printing of the feature identification 40 is completed on the surface of the packing belt unit through the character identification wheel set;
11. conveying the packing belt unit to the third glue coating part, and coating a protective material on the surface of the adhesive layer 20 to form a protective layer 30;
12. curing the protective layer 30 by generating ultraviolet light through the curing portion;
13. and (5) rolling and boxing the packing belt through a rolling machine.
The layer structure of the final prepared strapping band is shown in fig. 1.
In this embodiment, kraft paper 11 is a long fiber high stretch recycled kraft paper, the first adhesive and the second adhesive are both EVA hot melt adhesives, and the protective material is a photo-curable adhesive.
In the above-mentioned process of producing the packing belt, the slitting process performed by the slitter may be performed at the end, that is, the packing belt is slit after the protective layer 30 is produced. Further, if not necessary, the printing of the feature identifier 40 may not be performed.
Embodiment two:
1. four rolls of kraft paper 11 with the thickness of 0.14 plus or minus 0.01mm are selected to be put into a paper feeding part;
2. the second adhesive and the first adhesive are respectively put into a first adhesive box and a second adhesive box and heated to 185 ℃ to be melted into a liquid state, and the adhesive outlet thickness of the adhesive coating head is adjusted to be 0.02-0.03 mm;
3. conveying the kraft paper 11 to a deviation correcting device to finish deviation correction, so that synchronous parallel conveying of four layers of kraft paper 11 is realized;
4. conveying kraft paper 11 to a static removing device to remove static on the surface;
5. conveying kraft paper 11 to a first gluing part, and spreading a second adhesive on the surface of the kraft paper 11 through a gluing head to finish the coating of the second adhesive between two adjacent layers of kraft paper 11;
6. conveying the four kraft paper 11, on which the coating of the second adhesive is completed, to a press-fit portion and pressing to a preset thickness to form a base layer 10;
7. conveying the substrate layer 10 to a second gluing part, and scraping and coating a first adhesive on the surface of the substrate layer 10 through a gluing head to form two adhesive layers 20;
8. the surface temperature of the bonding layer 20 is reduced to below 35 ℃ through a cooling device, so that the manufacturing of the packing belt body is completed;
9. dividing the packing belt body into packing belt units with different widths (5 mm, 9mm, 12mm, 14mm, 15mm, 16mm and the like) by a dividing and cutting machine;
10. printing of the feature identification 40 is completed on the surface of the packing belt unit through the character identification wheel set;
11. conveying the packing belt unit to the third glue coating part, and coating a protective material on the surface of the adhesive layer 20 to form a protective layer 30;
12. curing the protective layer 30 by generating ultraviolet light through the curing portion;
13. and (5) rolling and boxing the packing belt through a rolling machine.
The layer structure of the final prepared strapping band is shown in fig. 2.
In this embodiment, kraft paper 11 is a long fiber high stretch recycled kraft paper, the first adhesive and the second adhesive are both EVA hot melt adhesives, and the protective material is a photo-curable adhesive.
In the above-mentioned process of producing the packing belt, the slitting process performed by the slitter may be performed at the end, that is, the packing belt is slit after the protective layer 30 is produced. Further, if not necessary, the printing of the feature identifier 40 may not be performed.
Embodiment III:
1. three rolls of kraft paper 11 with the thickness of 0.18 plus or minus 0.01mm are selected to be put into a paper feeding part;
2. laminating three layers of kraft paper 11 together at the first glue application using a second adhesive to form a substrate layer 10;
3. placing the first adhesive into a second adhesive box and heating to 185 ℃ to melt the first adhesive into a liquid state, and adjusting the adhesive outlet thickness of the adhesive coating head to 0.02-0.03 mm;
4. conveying the substrate layer 10 to a deviation correcting device to finish deviation correction;
5. conveying the substrate layer 10 to a static eliminating device to finish surface static elimination;
6. conveying the substrate layer 10 to a second gluing part, and scraping and coating a first adhesive on the surface of the substrate layer 10 through a gluing head to form two adhesive layers 20;
7. the surface temperature of the bonding layer 20 is reduced to below 35 ℃ through a cooling device, so that the manufacturing of the packing belt body is completed;
8. dividing the packing belt body into packing belt units with different widths (5 mm, 9mm, 12mm, 14mm, 15mm, 16mm and the like) by a dividing and cutting machine;
9. printing of the feature identification 40 is completed on the surface of the packing belt unit through the character identification wheel set;
10. conveying the packing belt unit to the third glue coating part, and coating a protective material on the surface of the adhesive layer 20 to form a protective layer 30;
11. curing the protective layer 30 by generating ultraviolet light through the curing portion;
12. and (5) rolling and boxing the packing belt through a rolling machine.
The layer structure of the final prepared strapping band is shown in fig. 3.
In this embodiment, kraft paper 11 is a long fiber high stretch recycled kraft paper, the first adhesive is an EVA hot melt adhesive, the second adhesive is a laminating adhesive, a monomer acid ester ethylene or acrylic acid ester copolymer emulsion, and the protective material is a photo-curable adhesive.
In the above-mentioned process of producing the packing belt, the slitting process performed by the slitter may be performed at the end, that is, the packing belt is slit after the protective layer 30 is produced. Further, if not necessary, the printing of the feature identifier 40 may not be performed.
Embodiment four:
1. four rolls of kraft paper 11 with the thickness of 0.14 plus or minus 0.01mm are selected to be put into a paper feeding part;
2. laminating the four kraft paper 11 together at the first glue application portion using a second adhesive to form a base layer 10;
3. placing the first adhesive into a second adhesive box and heating to 185 ℃ to melt the first adhesive into a liquid state, and adjusting the adhesive outlet thickness of the adhesive coating head to 0.02-0.03 mm;
4. conveying the substrate layer 10 to a deviation correcting device to finish deviation correction;
5. conveying the substrate layer 10 to a static eliminating device to finish surface static elimination;
6. conveying the substrate layer 10 to a second gluing part, and scraping and coating a first adhesive on the surface of the substrate layer 10 through a gluing head to form two adhesive layers 20;
7. the surface temperature of the bonding layer 20 is reduced to below 35 ℃ through a cooling device, so that the manufacturing of the packing belt body is completed;
8. dividing the packing belt body into packing belt units with different widths (5 mm, 9mm, 12mm, 14mm, 15mm, 16mm and the like) by a dividing and cutting machine;
9. printing of the feature identification 40 is completed on the surface of the packing belt unit through the character identification wheel set;
10. conveying the packing belt unit to the third glue coating part, and coating a protective material on the surface of the adhesive layer 20 to form a protective layer 30;
11. curing the protective layer 30 by generating ultraviolet light through the curing portion;
12. and (5) rolling and boxing the packing belt through a rolling machine.
The layer structure of the final prepared strapping band is shown in fig. 4.
In this embodiment, kraft paper 11 is a long fiber high stretch recycled kraft paper, the first adhesive is an EVA hot melt adhesive, the second adhesive is a laminating adhesive, a monomer acid ester ethylene or acrylic acid ester copolymer emulsion, and the protective material is a photo-curable adhesive.
In the above-mentioned process of producing the packing belt, the slitting process performed by the slitter may be performed at the end, that is, the packing belt is slit after the protective layer 30 is produced. Further, if not necessary, the printing of the feature identifier 40 may not be performed.
Fifth embodiment:
1. two rolls of kraft paper 11 with the thickness of 0.29 plus or minus 0.01mm are selected to be put into a paper feeding part;
2. laminating together two kraft paper 11 layers at the first glue application portion using a second adhesive to form a base layer 10;
3. placing the first adhesive into a second adhesive box and heating to 185 ℃ to melt the first adhesive into a liquid state, and adjusting the adhesive outlet thickness of the adhesive coating head to 0.02-0.03 mm;
4. conveying the substrate layer 10 to a deviation correcting device to finish deviation correction;
5. conveying the substrate layer 10 to a static eliminating device to finish surface static elimination;
6. conveying the substrate layer 10 to a second gluing part, and scraping and coating a first adhesive on the surface of the substrate layer 10 through a gluing head to form two adhesive layers 20;
7. the surface temperature of the bonding layer 20 is reduced to below 35 ℃ through a cooling device, so that the manufacturing of the packing belt body is completed;
8. dividing the packing belt body into packing belt units with different widths (5 mm, 9mm, 12mm, 14mm, 15mm, 16mm and the like) by a dividing and cutting machine;
9. printing of the feature identification 40 is completed on the surface of the packing belt unit through the character identification wheel set;
10. conveying the packing belt unit to the third glue coating part, and coating a protective material on the surface of the adhesive layer 20 to form a protective layer 30;
11. curing the protective layer 30 by generating ultraviolet light through the curing portion;
12. and (5) rolling and boxing the packing belt through a rolling machine.
The layer structure of the final prepared strapping band is shown in fig. 5.
In this embodiment, kraft paper 11 is a long fiber high stretch recycled kraft paper, the first adhesive is an EVA hot melt adhesive, the second adhesive is a laminating adhesive, a monomer acid ester ethylene or acrylic acid ester copolymer emulsion, and the protective material is a photo-curable adhesive.
In the above-mentioned process of producing the packing belt, the slitting process performed by the slitter may be performed at the end, that is, the packing belt is slit after the protective layer 30 is produced. Further, if not necessary, the printing of the feature identifier 40 may not be performed.
Example six:
1. two rolls of kraft paper 11 with the thickness of 0.29 plus or minus 0.01mm are selected to be put into a paper feeding part;
2. the second adhesive and the first adhesive are respectively put into a first adhesive box and a second adhesive box and heated to 185 ℃ to be melted into a liquid state, and the adhesive outlet thickness of the adhesive coating head is adjusted to be 0.02-0.03 mm;
3. conveying kraft paper 11 to a deviation correcting device to finish deviation correction, so that synchronous parallel conveying of two layers of kraft paper 11 is realized;
4. conveying kraft paper 11 to a static removing device to remove static on the surface;
5. conveying kraft paper 11 to a first gluing part, and spreading a second adhesive on the surface of the kraft paper 11 through a gluing head to finish the coating of the second adhesive between two layers of kraft paper 11;
6. the two kraft paper 11, on which the coating of the second adhesive is completed, is conveyed to the press part and pressed to a preset thickness to form a base layer 10;
7. conveying the substrate layer 10 to a second gluing part, and scraping and coating a first adhesive on the surface of the substrate layer 10 through a gluing head to form two adhesive layers 20;
8. the surface temperature of the bonding layer 20 is reduced to below 35 ℃ through a cooling device, so that the manufacturing of the packing belt body is completed;
9. dividing the packing belt body into packing belt units with different widths (5 mm, 9mm, 12mm, 14mm, 15mm, 16mm and the like) by a dividing and cutting machine;
10. printing of the feature identification 40 is completed on the surface of the packing belt unit through the character identification wheel set;
11. conveying the packing belt unit to the third glue coating part, and coating a protective material on the surface of the adhesive layer 20 to form a protective layer 30;
12. curing the protective layer 30 by generating ultraviolet light through the curing portion;
13. and (5) rolling and boxing the packing belt through a rolling machine.
The layer structure of the final prepared strapping band is shown in fig. 6.
In this embodiment, kraft paper 11 is a long fiber high stretch recycled kraft paper, the first adhesive and the second adhesive are both EVA hot melt adhesives, and the protective material is a photo-curable adhesive.
In the above-mentioned process of producing the packing belt, the slitting process performed by the slitter may be performed at the end, that is, the packing belt is slit after the protective layer 30 is produced. Further, if not necessary, the printing of the feature identifier 40 may not be performed.
By way of illustration of various embodiments of the strapping tape preparation method of the present invention, it can be seen that the strapping tape preparation method of the present invention has at least the following advantages:
(1) In response to the call of the environmental protection policy, the kraft paper made of recycled materials is adopted as the raw material for preparing the packing belt, so that the full utilization of waste materials can be realized, the disposable plastic package is reduced, the pollution caused by waste plastics is reduced, the used kraft paper packing belt can be recycled, and the waste plastic reduction contribution can be made;
(2) The fibers of the multi-layer kraft paper can be mutually supported by pressing the multi-layer kraft paper, so that the hardness and tensile strength of the packing belt are increased, and the trafficability of the packing belt in the packing process is better;
(3) Two layers of bonding layers are formed through the first adhesive, so that the double-sided adhesion function of the packing belt can be realized, and the packaging belt is beneficial to adapting to the packing requirements of different packaged articles;
(4) Bonding two adjacent kraft paper layers through a second adhesive, so that the hardness and tensile strength of the packing belt are further improved;
(5) The surface of the kraft paper is subjected to static electricity removal treatment, so that the static electricity is prevented from influencing the coating process of the adhesive, the kraft paper and the adhesive are guaranteed to be tightly attached, and the adhesive property and the working reliability of the packing belt are further guaranteed;
(6) The protective material is coated to form the protective layer, so that the packing belt is not easy to wet and wet, the reliability of the packing belt is guaranteed, the smoothness of the surface of the packing belt can be improved, the winding and unwinding processes of the packing belt are smoother, and smooth threading of the packing belt is realized in the packing and inserting and tightening processes.
(7) The EVA hot melt adhesive has good environmental protection, adhesion, flexibility, heating fluidity and cold resistance, and the EVA hot melt adhesive is adopted as an adhesive, so that the excellent adhesion performance and stable quality of the packaging belt are ensured.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention and not for limiting the same; while the invention has been described in detail with reference to the preferred embodiments, those skilled in the art will appreciate that: modifications and equivalents of the features disclosed herein may be made to the specific embodiments of the invention or to parts of the features may be substituted without departing from the principles of the invention, and such modifications and equivalents are intended to be encompassed within the scope of the invention as claimed.
Claims (14)
1. A method of making a strapping tape comprising:
step S1, manufacturing a packing belt body, which comprises the following steps:
s11, manufacturing a substrate layer (10) of the packing belt, wherein the substrate layer comprises a plurality of layers of kraft paper (11) pressed to a preset thickness; and
and S12, manufacturing an adhesive layer (20) of the packing belt, wherein the adhesive layer comprises the steps of respectively coating a first adhesive on a first surface of the substrate layer (10) and a second surface opposite to the first surface to form two layers of adhesive layers (20).
2. The method of producing a strapping band as in claim 1, wherein the step S11 comprises:
-providing n layers of said kraft paper (11);
coating a second adhesive on opposite sides of two adjacent layers of said kraft paper (11); and
and pressing n layers of kraft paper (11) to the preset thickness to form the substrate layer (10), wherein two adjacent layers of kraft paper (11) are bonded through the second adhesive.
3. The method of claim 2, wherein n has a value of 3, 4 or 5.
4. The method of producing a strapping band as in claim 2, wherein the step S11 further comprises: the surface of the kraft paper (11) is subjected to a static-removing treatment before the coating of the second adhesive is performed.
5. The method of producing a strapping band as in claim 1, wherein the step S12 further comprises: the adhesive layer (20) is subjected to a cooling treatment so that the surface temperature thereof is reduced to 35 ℃ or lower.
6. The strapping preparation method of claim 1, further comprising:
and S2, slitting the strapping tape body to form a plurality of strapping tape units.
7. The strapping preparation method of claim 1, further comprising:
and S4, coating a protective material on the surface, far away from the substrate layer (10), of the bonding layer (20) to form a protective layer (30).
8. The strapping preparation method of claim 7, further comprising:
and step S3, printing a characteristic mark (40) on the surface of the bonding layer (20) away from the substrate layer (10) before the step S4.
9. The method of claim 7, wherein the protective material comprises a photo-curable glue.
10. The strapping preparation method of claim 7, further comprising:
and S5, performing light curing treatment on the protective layer (30).
11. The method of producing a strapping band as in claim 1, wherein the first adhesive is applied in a thickness of 0.02 to 0.03mm.
12. The method of making a strapping band of claim 1 wherein the first adhesive comprises EVA hot melt adhesive.
13. The method of producing a strapping band as in claim 12, wherein the step S12 further comprises: the first adhesive is heated to convert the first adhesive from a solid state to a liquid state prior to application thereof.
14. The method of producing a strapping tape of claim 2 wherein the second adhesive comprises a laminating adhesive, a monomeric acid ester ethylene, an acrylic acid ester co-emulsion, or an EVA hot melt adhesive.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310090039.6A CN117382289A (en) | 2023-01-19 | 2023-01-19 | Method for preparing packing belt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310090039.6A CN117382289A (en) | 2023-01-19 | 2023-01-19 | Method for preparing packing belt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117382289A true CN117382289A (en) | 2024-01-12 |
Family
ID=89439781
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310090039.6A Pending CN117382289A (en) | 2023-01-19 | 2023-01-19 | Method for preparing packing belt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117382289A (en) |
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2023
- 2023-01-19 CN CN202310090039.6A patent/CN117382289A/en active Pending
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