CN111619163A

CN111619163A - Method for manufacturing packaging material capable of preventing ink from polluting by uniform-temperature extrusion forming system

Info

Publication number: CN111619163A
Application number: CN201910142425.9A
Authority: CN
Inventors: 林紫绮; 林宪仁
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-02-26
Filing date: 2019-02-26
Publication date: 2020-09-04

Abstract

The invention relates to a method for manufacturing a packaging material for preventing ink from polluting by using a uniform-temperature extrusion forming system, which comprises the following steps of: providing a uniform temperature extrusion forming system, and providing extrusion processing temperature with linear pressure of 10-200kg/cm and 30-350 ℃; providing a substrate; forming an ink layer; forming a cationic aqueous solution interface layer; and forming the laminated film layer by using a line-pressing temperature-equalizing extrusion forming system. By the implementation of the invention, not only can the packaging material without ink pollution be manufactured, but also the effect of effectively isolating the ink layer so as to protect the sanitation and safety of drinking or eating of a user can be achieved.

Description

Method for manufacturing packaging material capable of preventing ink from polluting by uniform-temperature extrusion forming system

Technical Field

The invention relates to a method for manufacturing a packaging material for preventing ink from polluting by using a uniform temperature extrusion forming system, in particular to a method for manufacturing a packaging material for preventing ink from polluting by using a uniform temperature extrusion forming system, which is applied to a food packaging container.

Background

Generally, in the existing containers on the market, especially the paper cup structure printed with ink, because of the requirement of cost control, no matter whether black-white or color ink is used, the quality of the used packaging materials is uneven, and it is difficult to ensure the use safety without worry or pollution. In addition, most of the printed ink of the paper cups used in large amount at present is not covered, and the printed ink is often directly exposed to contact users, even pollutes the contained contents, and is very easy to cause the safety worry of the users for drinking or eating.

Moreover, at present, the legal regulations for using ink are not complete, and most of the ink used at present still contains more or less toxic substances, so that the risk of toxic contamination when a user uses a container or a paper cup is actually greatly beyond the imagination of common people.

On the other hand, the packaging material, container or paper cup is usually transported or stored in a nested or stacked manner to reduce the occupied volume, so that the ink material of the high binding ink layer printed on the packaging material, container or paper cup can contaminate other packaging material, container or paper cup nested or stacked in a contact manner.

In view of the above, a method for preventing the packaging material from being contaminated by the ink material must be invented as quickly as possible, which not only can retain the characteristics of convenience and easiness in mass production of the packaging material, but also can effectively isolate the ink material and prevent the ink material from polluting users or contents, so that the packaging material, the container, the paper cup and the wide application industries thereof can become important innovations and progresses.

Disclosure of Invention

The invention aims to solve the problem that an ink material layer and a laminating layer cannot be effectively combined into a whole when how to manufacture a packaging material for preventing ink materials from polluting.

The invention provides a method for manufacturing a packaging material for preventing ink from polluting by using a uniform-temperature extrusion forming system, which comprises the following steps of: providing a linear pressure and uniform temperature extrusion molding system, which is provided with a pressure roller and a uniform temperature roller, wherein the linear pressure formed between the pressure roller and the uniform temperature roller is 10-200 kg/cm; the temperature equalizing roller provides the extrusion processing temperature of 30-350 ℃; providing a base material which is used as a base for preventing the packaging material from being polluted by the ink; forming an ink layer, wherein the ink layer is formed on at least one surface of the substrate; forming an interface Layer by forming an interface Layer (Primer Layer) of a cationic aqueous solution on the ink Layer; and forming a laminating layer, wherein the laminating layer is formed on the base material or the interface layer by using a linear pressure uniform temperature extrusion forming system under the conditions that the linear pressure is 10-200kg/cm and the extrusion processing temperature is 30-350 ℃.

By implementing the invention, at least the following progressive effects can be achieved:

firstly, the ink layer and the laminating layer can be effectively combined into a whole.

And secondly, the ink can be effectively isolated, and the mutual pollution of packaging materials or containers is avoided.

And thirdly, the ink is prevented from polluting users or contents, and the use sanitation and safety of the packaging material or the container are ensured.

So that those skilled in the art can readily understand the disclosure, the claims and the drawings, and can easily understand the objects and advantages of the present invention, the detailed features and advantages of the present invention will be described in detail in the embodiments.

Drawings

FIG. 1 is a flow chart of a method for manufacturing a packaging material with a uniform temperature extrusion molding system to prevent ink contamination according to an embodiment of the present invention.

FIG. 2A is a schematic diagram of a uniform temperature extrusion molding system for laminating film according to the present invention.

FIG. 2B is a diagram of an embodiment of a dual temperature-equalizing roller according to the present invention.

FIG. 2C is a cross-sectional view of an embodiment of a temperature equalizing roller according to the present invention.

FIG. 2D is a sectional view taken along line A-A of FIG. 3.

FIG. 2E is a sectional view taken along line B-B of FIG. 4.

FIG. 2F is a cross-sectional view of an embodiment of the thermal exchange tube of the temperature equalizing roller of the present invention further having heat exchange fins.

FIG. 3A is a schematic view of a substrate according to an embodiment of the present invention.

FIG. 3B is a schematic diagram of an ink layer formed on a substrate according to an embodiment of the invention.

FIG. 4A is a schematic diagram of an ink layer and a lamination layer formed on a substrate according to an embodiment of the invention.

FIG. 4B is a schematic diagram of forming a PE-coated layer according to an embodiment of the present invention.

FIG. 5 is a flow chart of a method embodiment of the present invention further including the step of forming a container.

FIG. 6A is a perspective view of a container manufactured by an embodiment of the method of the present invention.

FIG. 6B is a schematic perspective longitudinal cross-sectional view of the embodiment of FIG. 6A.

FIG. 7A is a schematic longitudinal sectional view of another container manufactured by an embodiment of the method of the present invention.

FIG. 7B is a partial enlarged view of the embodiment of FIG. 7A.

FIG. 8A is a schematic cross-sectional view of yet another container made by an embodiment of the method of the present invention.

FIG. 8B is an enlarged view of a portion of the embodiment of FIG. 8A.

[ description of main element symbols ]

S100: method for manufacturing packaging material capable of preventing ink from polluting by uniform-temperature extrusion forming system

S10: providing a line-pressure temperature-equalizing extrusion molding system S20: providing a substrate

S30: forming the ink layer S40: forming an interfacial layer

S50: forming a lamination layer S60: forming a container

100: ink contamination prevention packaging material 200: container for preventing ink from being polluted

10: line pressure temperature equalization extrusion molding system 110: pressure roller

120: temperature-equalizing roller structure 21: roller body

210: the temperature equalizing chamber 211: partition board

212: first chamber 213: second chamber

214: the third chamber 215: side plate

216: check valve 22: rotating shaft

221: flow passage 23: heat exchanger tube

231: heat exchange fins 130: membrane body

160: temperature adjusting medium 170: supercritical fluid

20: base material 30: ink layer

40: interface layer 50: laminated film layer

Detailed Description

As shown in fig. 1, the present embodiment is a method 100 for manufacturing a packaging material for preventing ink from contaminating by using a uniform temperature extrusion molding system, which includes: providing a linear pressure temperature-equalizing extrusion forming system (step S10); providing a substrate (step S20); forming an ink layer (step S30); forming an interface layer (step S40); and forming a lamination layer (step S50). The water-based polymer of the ethylene imine contains amino group, which is a polar group with high cationic property, so that polyolefin (polyofefin) materials can generate bonding, thereby generating good interface treatment effect, and providing good working pressure and working temperature during film coating by a linear pressure uniform temperature extrusion forming system.

As shown in fig. 1 and fig. 2A to 2F, a linear pressure and temperature equalizing extrusion molding system (step S10) is provided, wherein the linear pressure and temperature equalizing extrusion molding roller system 100 at least comprises a pressure roller 110 and a temperature equalizing roller 120, and a linear pressure of 10-200kg/cm can be formed between the pressure roller 110 and the temperature equalizing roller 120; in addition, the temperature equalizing roller can provide extrusion processing temperature of 30-350 ℃.

In order to clearly understand the above terms, the term "line pressure" refers to the pressure applied to the nip formed by the pressure roller 110 and the temperature-equalizing roller 120.

Specifically, a homogeneous extrusion system 100, comprising: a pressure roller 110 and a temperature-equalizing roller 120; and wherein the temperature-uniforming roller structure 120 includes: a roller body 21; a pair of rotating shafts 22; and a plurality of branch heat exchange tubes 23.

The pressure roller 110 is used for applying a suitable pressure on the film body 130, and the film body 130 includes a substrate 20, an ink layer 30, an interface layer 40, and a lamination layer 50. The pressure roller 110 may be a rubber roller or a metal roller, and the pressure roller 110 may be a pressure roller 110 that only provides pressure, or may be a pressure and temperature equalizing roller 120 that has both pressure and heat/heat dissipation.

The temperature equalizing roller 120 is mainly disposed at a position opposite to the pressure roller 110, which can co-extrude at least one film 130, so that the temperature equalizing roller 120 and the pressure roller 110 can cooperate to clamp the film 130 to be processed on the film 130, thereby effectively producing the film 130, and generally, the temperature equalizing roller 120 is usually a metal temperature equalizing roller 120.

The roller body 21 and the temperature-equalizing roller 120 include the roller body 21, the roller body 21 is a cylindrical hollow housing, generally, a metal roller is mostly used, the roller body 21 has a temperature-equalizing chamber 230, a pair of partition boards 211 is disposed in the temperature-equalizing chamber 230, the partition boards 211 are disposed on two sides of the temperature-equalizing chamber 230, thereby the temperature-equalizing chamber 230 is divided into a first chamber 212, a second chamber 213 and a third chamber 214, which are independent from each other, wherein the first chamber 212 and the third chamber 214 are used for allowing the temperature-adjusting medium 160 to rapidly circulate, and the second chamber 213 mainly allows the roller body 21 to achieve rapid temperature equalization.

The second chamber 213 is designed to be a pressure-resistant and airtight space, so as to rapidly achieve thermal uniformity of the entire roller body 21, the second chamber 213 may be filled with at least one supercritical fluid 170, and the supercritical fluid 170 has a gas state property of low surface tension, low viscosity and high diffusivity, thereby rapidly and effectively achieving a global temperature equalization effect of the second chamber 213.

The supercritical fluid 170 is filled in the second chamber 213 and contacts with each heat exchange tube 23 in a large area, so that the temperature adjusting medium 160 circulating in the heat exchange tube 23 can effectively control the temperature of the roller body 21, thereby achieving the effect of uniform-temperature heating or uniform-temperature heat dissipation of the uniform-temperature roller 120.

The supercritical fluid 170 may be one or a combination of carbon dioxide, water, methane, ethane, propane, ethylene, propylene, methanol, ethanol, or acetone …, and each of the supercritical fluids 170 has a different critical temperature, so that the selection of the supercritical fluid 170 may be based on the required operating temperature of the temperature equalizing roller 120, and the selection of the different types of supercritical fluids 170 may be based on the required operating temperature of the temperature equalizing roller 120.

In order to make the roller body 21 rotate, the rotating shafts 22 are respectively formed on the two side plates 215 of the roller body 21, and in order to make the roller body 21 heat or dissipate heat, in this embodiment, the temperature adjusting medium 160, such as hot water, refrigerant or kerosene …, is effectively input into and output from the roller body 21 for heat exchange, so that a flow channel 221 is provided in each rotating shaft 22, and the flow channel 221 is respectively communicated with the first chamber 212 and the third chamber 214, so that the temperature adjusting medium 160 can be effectively expanded or collected in the first chamber 212 and the third chamber 214.

A plurality of branch heat exchange tubes 23, wherein the plurality of branch heat exchange tubes 23 are disposed in the second chamber 213, and two ends of each heat exchange tube 23 are respectively communicated with the first chamber 212 and the third chamber 214, so that the temperature adjusting medium 160 can rapidly circulate between the first chamber 212 and the third chamber 214, and the heat exchange tubes 23 can exchange heat; in order to increase the heat exchange effect, a plurality of heat exchange fins 231 may be further formed on the at least one heat exchange tube 23 to increase the heat exchange area.

In order to effectively supplement, adjust or replace the supercritical fluid 170, a check valve 216 may be disposed on the side plate 215 of the roller body 21, and the check valve 216 is communicated with the second chamber 213, so that the supercritical fluid 170 in the second chamber 213 can be rapidly supplemented, adjusted or replaced by the check valve 216.

As shown in fig. 3A and 3B, a substrate 20, which is a base material for manufacturing the packaging material with the anti-ink contamination, is provided (step S20), and the substrate is selected from a cardboard or a polymer plate.

When the base material 20 is a paper base material 20, the container formed by the packaging material with ink contamination prevention manufactured by the method S200 for manufacturing the packaging material with a uniform temperature extrusion molding system may be a paper cup, a paper bowl or a paper box.

On the other hand, when the material of the substrate 20 is a polymer material, the polymer material used can be rubber or silicone rubber, which is easy to obtain and has a better cost control.

An ink layer is formed (step S30), which is to form the ink layer 30 on at least one surface of the substrate 20, and the ink layer 30 may be formed on the entire surface of the substrate 20 or only a part of the surface of the substrate 20.

The ink layer 30 may be formed on at least one surface of the substrate 20. While the ink layer 30 may be an aqueous ink layer 30, an oily ink layer 30, a solid ink layer 30, or a composite ink layer 30.

As shown in fig. 4A and 4B, an interface Layer 40(Primer Layer) of a cationic aqueous solution is formed on the ink Layer 30, and the interface Layer 40 may be an ethyleneimine aqueous polymer having a total solid content of 5% to 50%, and the ethyleneimine aqueous polymer may contain 1% to 25% of a polymer containing an amine group (step S40). A lamination layer is formed (step S50) by attaching the lamination layer 50 to the substrate 20 or the interface layer 40.

When the ink layer 30 is formed on the surface of the substrate 20, since the ink layer 30 may not easily adhere to the lamination layer 50, the interface layer 40 that easily adheres to both the lamination layer 50 and the ink layer 30 is formed on the ink layer 30 before the lamination layer 50 is formed, so that stable adhesion of the lamination layer 50 can be ensured.

As shown in fig. 4A, 4B, and 6A to 8B, the lamination layer 50 is attached to the interface layer 40 covering the ink layer 30, so as to effectively shield the ink layer 30, prevent the ink layer 30 from directly contacting with a user or other objects, and prevent the ink used by the ink layer 30 from contaminating the user or other objects and causing adverse effects.

In order to effectively combine the ink layer 30, the interface layer 40 and the lamination layer 50, it is necessary to provide a proper line pressure and a high temperature uniformity; therefore, in the case of the lamination layer 50, the step of forming the lamination layer (step S50) may be performed under the conditions of the linear pressure of 10 to 200kg/cm and the extrusion temperature of 30 to 350 ℃ by using a linear pressure uniform temperature extrusion molding system, and the lamination layer 50 may be formed on the base material 20 or the interface layer 40, thereby manufacturing the packaging material 100 for preventing the contamination of the ink.

The lamination layer 50 used for forming the lamination layer (step S50) may be made of a polymer material, and the polymer material may be polypropylene (PP), polyvinyl chloride (PVC), Polyethylene (PE), Low Density Polyethylene (LDPE), High Density Polyethylene (HDPE), Polystyrene (PS), acrylonitrile-butadiene-styrene copolymer (ABS), polyamide resin (Nylon), polyester resin (PET), ethylene-vinyl acetate copolymer (EVA resin), or silicone.

Furthermore, as shown in fig. 5 and fig. 6A to 8B, in the manufacturing method S100, the method S100 for manufacturing the packaging material for preventing ink contamination by the uniform temperature extrusion molding system further includes a step of forming a container (step S60), in which the container 200 is formed by using the packaging material 100 for preventing ink contamination, and the container 200 may be a cup, a bowl, or a box.

As shown in fig. 6A and 6B, the ink contamination prevention container 200 has the ink layer 30 formed only on the outer surface of the base material 20. As shown in fig. 7A and 7B, the ink contamination preventing container 200 has the ink layer 30 formed on both the outer surface and the inner surface of the base material 20. In the ink contamination prevention container 200 shown in fig. 8A and 8B, the ink layer 30 is formed on the outer surface, the inner surface, and the inner bottom surface of the base material 20.

As shown in fig. 6A-8B, the surface layer of the container 200 that prevents ink from contaminating the interior or exterior of the container is the laminating layer 50, whether directly on the surface of the substrate 20 or on the interface layer 40.

In summary, the ink contamination prevention container 200 with the lamination layer 50 uses the interface layer 40 to ensure that the lamination layer 50 can be attached to the ink layer 30, and the lamination layer 50 can be attached to the substrate 20 and the ink layer 30 at the same time, so that the lamination layer 50 effectively isolates the ink in the ink layer 30, thereby achieving the effect of preventing the ink contamination, and ensuring the sanitation and avoiding the possibility of contacting the toxic substances in the ink.

While the foregoing embodiments have been described in a specific context of preferred embodiments, it will be appreciated by those skilled in the art that variations may be made in these embodiments without departing from the spirit or scope of the invention.

Claims

1. A method for manufacturing a packaging material for preventing ink from polluting by using a uniform temperature extrusion molding system is characterized by comprising the following steps of:

providing a linear pressure and uniform temperature extrusion molding system, which is provided with a pressure roller and a uniform temperature roller, wherein the linear pressure formed between the pressure roller and the uniform temperature roller is 10-200 kg/cm; the temperature equalizing roller provides the extrusion processing temperature of 30-350 ℃;

providing a substrate which is used as a base of the packaging material contaminated by the ink-proof material;

forming an ink layer, wherein the ink layer is formed on at least one surface of the substrate;

forming an interface layer by forming an interface layer of a cationic aqueous solution on the ink layer; and

forming a laminating layer by using the linear pressure uniform temperature extrusion molding system, and forming the laminating layer on the base material or the interface layer under the conditions that the linear pressure is 10-200kg/cm and the extrusion processing temperature is 30-350 ℃.

2. The method of claim 1, wherein: wherein the substrate is a paper substrate or a polymer substrate.

3. The method of claim 1, wherein: wherein the ink layer is an aqueous ink layer.

4. The method of claim 1, wherein: wherein the cationic aqueous solution further contains an ethyleneimine aqueous polymer.

5. The method of claim 1, wherein: wherein the interface layer is formed by ethylene imine water-based polymer with 5-50% of total solid content.

6. The method of claim 5, wherein: wherein the ethylene imine water-based polymer contains 1 to 25 percent of amino-containing polymer.

7. The method of claim 1, wherein: wherein the laminated layer is formed by polypropylene (PP), polyvinyl chloride (PVC), Polyethylene (PE), low-density polyethylene (LDPE), high-density polyethylene (HDPE), Polystyrene (PS), acrylonitrile-butadiene-styrene copolymer (ABS), polyamide resin (Nylon), polyester resin (PET) or ethylene-vinyl acetate copolymer (EVA resin), or silica gel.

8. The method of claim 1, wherein: it further includes the step of forming a container to form an ink contamination prevention container.

9. The method of claim 8, wherein: wherein the container for preventing the ink from polluting is a cup body, a bowl body or a box body.

10. The method of claim 1, wherein the line pressure, uniform temperature extrusion molding system comprises:

a pressure roller; and

samming gyro wheel sets up in the relative position with at least one film body of this pressure roller coextrusion, and this samming gyro wheel includes again:

the roller body is provided with a temperature-equalizing cavity, and a pair of partition plates are arranged in the temperature-equalizing cavity to divide the temperature-equalizing cavity into a first cavity, a second cavity and a third cavity which are independent of each other;

the counter shafts are respectively formed on the two side plates of the roller body; and

a plurality of branch heat exchange tubes arranged in the second chamber, wherein two ends of each heat exchange tube are respectively communicated with the first chamber and the third chamber;

the second chamber is a closed space and is used for containing at least one supercritical fluid, and the temperature regulating medium is input into and output from the roller body to carry out heat exchange, so that a flow passage is arranged in each rotating shaft and is respectively communicated with the first chamber and the third chamber, and the temperature regulating medium can be effectively unfolded or gathered in the first chamber and the third chamber; and

wherein the linear pressure formed between the pressure roller and the temperature-equalizing roller is 10-200 kg/cm; the temperature equalizing roller provides extrusion processing temperature of 30-350 ℃.