CN212289057U - Solvent-free composite material for flexible package - Google Patents
Solvent-free composite material for flexible package Download PDFInfo
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- CN212289057U CN212289057U CN202020033473.2U CN202020033473U CN212289057U CN 212289057 U CN212289057 U CN 212289057U CN 202020033473 U CN202020033473 U CN 202020033473U CN 212289057 U CN212289057 U CN 212289057U
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Abstract
The utility model provides a solvent-free composite material for flexible package, which relates to the technical field of solvent-free compounding. The utility model discloses an including shaping aluminium body, shaping aluminium body includes top layer, inferior inlayer and the inlayer that sets gradually within by outer, and the top layer is connected with inferior inlayer through first adhesive linkage, and inferior inlayer passes through the second adhesive linkage and is connected with the inlayer. The utility model discloses reduced to the pollution of packing content article especially food, medicine etc. and no volatile solvent discharges in the production, does not pollute atmospheric environment, and the production environment is good.
Description
Technical Field
The utility model relates to a solvent-free composite technology field especially relates to a solvent-free composite material for soft package.
Background
The solvent-free compounding technology is developed on the basis of solvent compounding due to the rising cost of organic solvents caused by the petroleum crisis in the 70 th of the 20 th century and the increasingly high environmental protection requirement in the world. Particularly, with the stricter and stricter restriction on organic solvent discharge in various countries, flexible package manufacturers generally adopt solvent-free compounding to replace the traditional solvent compounding technology when expanding the compounding production capacity.
SUMMERY OF THE UTILITY MODEL
To the weak point that exists in the above-mentioned problem, the utility model provides a solvent-free combined material for soft-packing makes it reduce to the pollution of packing content article especially food, medicine etc. and there is not volatile solvent emission in the production, does not pollute atmospheric environment, and the production environment is good.
In order to solve the problem, the utility model provides a solvent-free combined material for soft-packing, including the shaping aluminium body, wherein, the shaping aluminium body includes top layer, inferior inlayer and the inlayer that sets gradually within by outer, the top layer through first adhesive linkage with inferior inlayer is connected, inferior inlayer pass through the second adhesive linkage with the inlayer is connected.
Preferably, the inner layer is a polyethylene layer.
Preferably, the secondary inner layer is an aluminized biaxially oriented polyester layer.
Preferably, the skin layer is a biaxially oriented polyester layer.
Preferably, the first adhesive layer and the second adhesive layer are both solvent-free adhesives
A preparation process of a solvent-free composite material for flexible packaging comprises the following steps:
s10, after the surface layer is printed or the surface layer is not printed, the surface layer is adhered to the secondary inner layer through solvent-free composite glue;
s20, bonding the two bonded films obtained in the S10 with the inner layer through a solvent-free adhesive, and then sending the films to a curing chamber to be cured at a certain temperature and time;
and S30, taking out the product obtained in the step S20 after the arrival time, placing the product for cooling, carrying out all-item inspection according to the product standard, and selling the product after the inspection is qualified.
Compared with the prior art, the utility model has the advantages of it is following:
1.100 percent of adhesive, no solvent residue, reduced pollution to packaged contents, especially food, medicines and the like, no volatile solvent emission in production, no pollution to atmospheric environment and excellent production environment.
2. Higher running speed. The speed of the apparatus can be up to 480 m/min. The machine is fast, the occupied area is small, and the fire and explosion risks are avoided.
3. Less binder consumption. The production cost is lower, and the gluing and total cost is reduced to a certain extent compared with the prior art; the related calculation shows that: compared with the domestic solvent-free glue, the consumption cost of the solvent-free adhesive can be reduced by 29 percent by using the imported solvent-free two-component glue.
4. The equipment operates with lower energy consumption. Since a general drying system is not used, energy consumption can be significantly reduced.
5. Better return on investment, the investment efficiency of the solvent-free compound machine is exponentially higher than that of the solvent-based compound machine.
6. The danger of organic solvent transportation and storage is reduced.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention;
FIG. 2 is a schematic process flow diagram of an embodiment of the present invention;
FIG. 3 is a schematic diagram showing the comparison of the sizing amount of two composite processes in the embodiment of the present invention;
fig. 4 is a schematic diagram of the solvent-free composite advantage of the embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail with reference to the accompanying drawings and examples, which are not intended to limit the present invention.
As shown in fig. 1 and 2, the embodiment of the utility model comprises a shaping aluminum body, the shaping aluminum body includes by top layer 1, inferior inlayer 2 and inlayer 3 that sets gradually within outer, top layer 1 is connected with inferior inlayer 3 through first adhesive linkage 2, inferior inlayer 3 is connected with inlayer 5 through second adhesive linkage 4, inlayer 5 is the polyethylene layer, inferior inlayer 3 is the biaxial stretching polyester layer of aluminizing, top layer 1 is the biaxial stretching polyester layer, first adhesive linkage 2 and second adhesive linkage 4 are solvent-free adhesive
A preparation process of a solvent-free composite material for flexible packaging comprises the following steps:
s10, after the surface layer is printed or the surface layer is not printed, the surface layer is adhered to the secondary inner layer through solvent-free composite glue;
s20, bonding the two bonded films obtained in the S10 with the inner layer through a solvent-free adhesive, and then sending the films to a curing chamber to be cured at a certain temperature and time;
and S30, taking out the product obtained in the step S20 after the arrival time, placing the product for cooling, carrying out all-item inspection according to the product standard, and selling the product after the inspection is qualified.
In this example, solvent-free compounding:
1. the glue does not contain solvent, has certain fluidity at room temperature, and the viscosity is reduced along with the temperature rise.
2. During compounding, the glue components are preheated, the viscosity is reduced to a proper degree through heating, then the glue components are mixed according to a certain proportion, and the glue is coated on a substrate through mutual rotation of a series of glue rollers.
3. After coating, the coating can be directly compounded with another base material without heating and drying.
4. Two-component or one-component solvent-free polyurethane adhesive.
One-component solvent-free adhesive:
1. the temperature of the single-component solvent-free adhesive is reduced by preheating, coating is carried out, and the gluing amount is adjusted on line according to the gap and the rotating speed ratio of the metering roller.
2. Isocyanate terminated, moisture cured.
3. Sizing temperature: between 60 and 100 degrees (depending on the viscosity).
4. Higher initial adhesion.
5. The application range is as follows: paper/plastic, cardboard/plastic, paper/aluminum foil (pack, box, etc. applications).
Two-component solvent-free adhesive:
1. a glue mixer is required.
2. The gluing amount can be adjusted on line (glue ratio of the glue mixer, and the ratio of the gap and the rotating speed of the metering roller).
3. Sizing temperature: 35-45 ℃.
4. The initial adhesion is low.
5. Maximum speed: 450 m/min.
6. The curing speed is fast, and the production efficiency is high.
In this embodiment, the process difference between solvent glue and solvent-free glue is as follows:
| solvent type | Difference in process | Solvent-free type |
| Manual stirring | Glue supply mode | Automatic glue mixing |
| Anilox roll | Coating roller | Smooth roller |
| Can not be adjusted online | Coating amount | Can be adjusted on line |
| With drying tunnel (heating) | Heating of | No drying tunnel (No drying heating) |
| Medium speed | Speed of rotation | High speed |
| Easy to stretch | Product dimensional stability | Is not easy to stretch |
| Big smell and big noise | Workshop environment | No smell, low noise |
| In | Degree of automation | Height of |
Cost of solvent glue and solvent-free glue:
| solvent type | Amount of the composition used | Solvent-free type |
| 2.5-5.8 | Coating weight g/m2 | 1.5-1.6 |
| 35-40％ | Working concentration | 100％ |
| 16-18 | Price per kg of adhesive | 38 |
| 6-7 | Price of solvent is Yuan/kg | ------ |
| 0.10 | Cost per square meter | 0.057-0.058 |
And (3) comparing the gluing amount of the two composite processes: as shown in fig. 3
The solvent-free composite advantage: as shown in fig. 4
Superiority of adhesive
1. The glue has little influence on the friction coefficient of the PE film and has good opening performance.
2. Has little influence on the friction coefficient under the high-temperature environment or high-temperature transportation condition
3. Long shelf life (up to 50 min at 40 deg.C), and convenient operation
4. Good leveling property
5. High and stable peel strength
6. The structure is applicable:
the general structure is as follows: PET/PE NY/PE OPP/CPP/VMCPP PET/VMPET/PE PET/AL/PE
The water boiling structure is as follows: PET/PE NY/PE
The cooking structure is as follows: NY/RCPP PET/RCPP (conditions not considering PAA).
In this embodiment, the solvent-free composite material structure for the flexible package
Plastic-plastic compounding, aluminum-plastic compounding, paper-plastic compounding and the like. The following representative materials:
biaxially oriented polyester/aluminum-plated biaxially oriented polyester/polyethylene (BOPET/VMBOPET/PE)
Biaxial stretching polypropylene/vacuum aluminum plating casting polypropylene (BOPP/VMCPP)
Biaxially oriented polyester/aluminum/polyethylene (BOPET/AL/PE)
Aluminium/polyethylene (AL/PE)
In this embodiment, the product structure may be formed by combining two or more materials (three, four or even five).
In this example, the binder is bosch.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (5)
1. The utility model provides a solvent-free combined material for soft-packing, includes shaping aluminium body, its characterized in that, shaping aluminium body includes by outer within the surface layer that sets gradually, inferior inlayer and inlayer, the surface layer through first adhesive linkage with inferior inlayer is connected, inferior inlayer through the second adhesive linkage with the inlayer is connected.
2. The solvent-free composite for flexible packaging of claim 1, wherein the inner layer is a polyethylene layer.
3. The solvent-free composite for flexible packaging of claim 1, wherein the secondary inner layer is an aluminized biaxially oriented polyester layer.
4. The solvent-free composite for flexible packaging of claim 1 wherein the skin layer is a biaxially oriented polyester layer.
5. The solvent-free composite for flexible packaging of claim 1, wherein the first adhesive layer and the second adhesive layer are both solvent-free adhesives.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020033473.2U CN212289057U (en) | 2020-01-08 | 2020-01-08 | Solvent-free composite material for flexible package |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020033473.2U CN212289057U (en) | 2020-01-08 | 2020-01-08 | Solvent-free composite material for flexible package |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212289057U true CN212289057U (en) | 2021-01-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020033473.2U Active CN212289057U (en) | 2020-01-08 | 2020-01-08 | Solvent-free composite material for flexible package |
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|---|---|
| CN (1) | CN212289057U (en) |
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2020
- 2020-01-08 CN CN202020033473.2U patent/CN212289057U/en active Active
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