WO2017114338A1

WO2017114338A1 - Recyclable packaging used for oxidative polymeric ink

Info

Publication number: WO2017114338A1
Application number: PCT/CN2016/111981
Authority: WO
Inventors: 桑春龙
Original assignee: 桑春龙
Priority date: 2015-12-30
Filing date: 2016-12-25
Publication date: 2017-07-06
Also published as: CN105416838A; CN105416838B

Abstract

Provided is a recyclable packaging used for an oxidative polymeric ink. The recyclable packaging comprises: a paper packaging layer (2), which is a sealed packaging container used for accommodating said oxidized polymeric ink; an anti-oxidation coating (1), comprising a PVA nanomaterial; said anti-oxidation coating being applied to the inside surface of said paper packaging layer and used for blocking oxygen molecules from penetrating said anti-oxidation coating and coming into contact with the oxidized polymeric ink and causing said ink to oxidize and dry out; a waterproof packaging layer (3), wrapped around the outside surface of said paper packaging layer and having a sealed structure, and used for blocking water molecules from passing through the waterproof packaging layer and entering the interior of the waterproof packaging layer, causing the performance of said PVA nanomaterial when blocking oxygen molecules to decline and cause the ink to oxidize and dry out.

Description

Recyclable packaging for oxidative polymerization inks

The present application claims priority to Chinese Patent Application No. 201511025351.9, entitled "Recyclable Packaging for Oxidative Polymeric Inks" by the Chinese Patent Office on December 30, 2015.

Technical field

The present invention relates to the field of ink packaging technology, and more particularly to a recyclable package for oxidative polymerization type inks.

Background technique

The ink is a fluid substance which is uniformly dispersed in a binder by pigment particles, fillers, additives, and the like, and has a certain viscosity.

The inks can be classified into volatile drying inks, osmotic drying inks, oxidative polymerization inks, two-liquid reactive inks, and ultraviolet curable inks, depending on the main drying method.

Because of the anti-oxidation, anti-volatilization, anti-ultraviolet and other requirements required for ink storage, traditional printing inks are mostly sealed in metal drums or plastic drums, resulting in manual ink removal from metal drums or plastic drums during printing operations. Transfer to the ink fountain pool, and because the ink is in direct contact with the metal drum or plastic bucket, the ink in the metal drum or plastic bucket cannot be completely cleaned, and the residual ink is solidified in a metal drum or a plastic bucket, which has the cured latex. The waste of the ink is non-flammable and toxic. Therefore, these wastes cannot be detoxified by incineration, and the use of solvolysis causes atmospheric pollution due to the volatility of the solvent. Therefore, based on current ink packaging, there is no effective way to recycle environmentally.

Summary of the invention

The object of the present invention is to provide a recyclable package for oxidative polymerization type ink, which has a detachable paper packaging layer and a waterproof packaging layer, which can be classified and recycled, wherein the anti-oxidation coating applied in the paper packaging layer The layer is automatically deactivated after the ink is extruded, so that the residual ink is quickly dried, so that the paper packaging layer can satisfy the recycling condition of the paper product, thereby enabling environmentally friendly recycling.

To achieve the above object, the present invention provides a recyclable package for an oxidative polymerization type ink comprising:

a paper packaging layer, which is a sealed flexible packaging container for accommodating the oxidative polymerization type ink;

An oxidation-proof coating comprising polyvinyl alcohol PVA and a nano material, wherein a mass ratio of the nano material to the PVA is from 1% to 80%; and the oxidation resistant coating is applied to the paper packaging layer An inner surface for blocking oxygen molecules from penetrating the oxidation preventing coating to contact the oxidative polymerization type ink to oxidize and dry the ink;

a waterproof packaging layer wrapped on the outer surface of the paper packaging layer and having a sealing structure for blocking water molecules from entering the waterproof packaging layer through the waterproof packaging layer, causing the oxidation preventing coating to form oxygen molecules The barrier properties are degraded, causing the ink to oxidatively dry.

Preferably, the nano material comprises: an organic nano material and/or an inorganic nano material.

Further preferably, the organic nano material is specifically: nano cellulose;

The nanocellulose has a length of from 1 nm to 100 nm.

Further preferably, the nanocellulose is specifically a hydrophobically modified or oleophobic modified nanocellulose.

Preferably, the inorganic nano material is specifically: nano silica or nano montmorillonite.

Further preferably, the nano silica is specifically: hydrophobic modified or oleophobic modified nano silica; the nano montmorillonite is specifically: hydrophobic modified or oleophobic modified nano montmorillonite.

Preferably, the waterproof packaging layer is made of a waterproof membrane material comprising: polyethylene PE, biaxially oriented polypropylene film BOPP, polyethylene terephthalate PET, and cast polypropylene film CPP Any of them.

Preferably, an outer surface of the paper packaging layer is connected to an inner surface portion of the waterproof packaging layer; the connection is broken by an external force, so that the waterproof packaging layer is separated from the paper packaging layer.

Further preferably, when the oxidative polymerization type ink in the recyclable package is used, the waterproof packaging layer which has been separated from the paper packaging layer is first removed, and the paper packaging layer is opened to extrude the ink. The water molecules in the air then combine with the PVA in the oxidation resistant coating to swell the PVA, destroying the oxygen barrier properties of the oxidation resistant coating, such that the ink remaining in the recyclable package Oxidative drying.

Preferably, the sealing of the paper packaging layer coated with the anti-oxidation coating layer is specifically a glue sealing or a thermoplastic sealing; the sealing of the waterproof packaging layer is specifically a thermoplastic sealing.

The recyclable package for oxidative polymerization type ink provided by the embodiment of the invention has a detachable paper packaging layer and a waterproof packaging layer, which can be classified and recycled, wherein the anti-oxidation coating coated in the paper packaging layer is The ink is automatically deactivated after use, so that the residual ink is quickly dried, so that the paper packaging layer can satisfy the recycling condition of the paper product, thereby enabling environmentally friendly recycling.

DRAWINGS

1 is a schematic cross-sectional structural view of a recyclable package for an oxidative polymerization type ink according to an embodiment of the present invention.

detailed description

The technical solution of the present invention will be further described in detail below through the accompanying drawings and embodiments.

1 is a recyclable package for an oxidative polymerization type ink according to an embodiment of the present invention. As shown in the cross-sectional structural diagram of the recyclable package shown in Figure 1, the recyclable package provided by the embodiment of the present invention comprises: an oxidation resistant coating 1, a paper packaging layer 2 and a waterproof packaging layer 3;

The anti-oxidation coating 1, including polyvinyl alcohol (PVA) and nano materials, has a mass ratio of nano materials to PVA of 1% to 80%.

Among them, PVA has certain properties of blocking oxygen molecules, and is also used as a film-forming agent for making points. The nanomaterials dispersed in the PVA are formed together to form an anti-oxidation coating applied to the inner surface of the paper packaging layer 2.

For oxidative polymerization type inks which do not require high oxygen barrier properties, PVA can also be used alone as the oxidation resistant coating 1.

Nanomaterials may include organic nanomaterials, inorganic nanomaterials, and hybrid materials of organic nanomaterials and inorganic nanomaterials.

The organic nanomaterial may be specifically nanocellulose (also called cellulose crystal) or modified nanocellulose, and its size ranges from 1 nm to 100 nm. The modified nanocellulose may be specifically a hydrophobically modified nanocellulose or an oleophobic modified nanocellulose.

The inorganic nano material may be specifically nano silica or nano montmorillonite.

Similarly, the inorganic nanomaterial may also be a modified inorganic nanomaterial such as hydrophobically modified or oleophobic modified nanosilica, and a hydrophobically modified or oleophobic modified nanomontmorillonite.

The above organic nanomaterials, inorganic nanomaterials or a mixture of the two may be used to block oxygen molecules.

In a specific example, PVA mixed nano-silica is used as the oxidation-proof coating 1, the mass ratio of nano-silica to PVA is 25%, and the thickness of the oxidation-resistant coating 1 is 30 μm, and the oxygen permeability is actually measured. It is 1.5 cm ³ /(m ² ·d·Pa).

In another specific example, PVA mixed nano-silica is used as the anti-oxidation coating 1, the mass ratio of nano-silica to PVA is 50%, and the thickness of the anti-oxidation coating 1 is 50 μm, and the oxygen permeability is actually measured. The rate was 0.8 cm ³ /(m ² ·d·Pa).

In another specific example, PVA mixed nanocellulose is used as the oxidation resistant coating 1, the mass ratio of nanocellulose to PVA is 40%, and the thickness of the oxidation resistant coating 1 is 50 μm, and the actual oxygen permeability is measured. 0.6 cm ³ /(m ² ·d·Pa).

The paper packaging layer 2 is a sealed flexible packaging container for accommodating oxidative polymerization type ink.

Specifically, the flexible packaging container formed by the paper packaging layer 2 may be in the form of a flexible packaging bag or a flexible packaging box, and can change shape and volume with an external force.

The oxidation-proof coating 1 is evenly coated on the inner surface of the paper packaging layer 2, so that the ink and the paper packaging layer 2 are separated by the oxidation-proof coating 1, which can effectively block the oxygen molecules outside the paper packaging layer 2. The penetrating anti-oxidation coating 1 is brought into contact with the oxidative polymerization type ink packaged in the paper packaging layer 2 to cause oxidative drying of the ink.

Specifically, after the ink is filled into the paper packaging layer 2, the sealing of the paper packaging layer 2 can be specifically achieved by using a glue seal or a thermoplastic seal. Filling is carried out under an inert atmosphere to ensure high barrier to oxygen.

The waterproof packaging layer 3 is wrapped on the outer surface of the paper packaging layer 2 and has a sealing structure for blocking water molecules from entering the waterproof packaging layer 3 through the waterproof packaging layer 3. Among them, the sealing of the waterproof packaging layer 3 can preferably be achieved by using a thermoplastic seal under an inert gas atmosphere.

Since the PVA in the oxidation-preventing coating 1 can be combined with water molecules in the air, a swelling phenomenon occurs. Therefore, if the water molecules are inhaled into the paper packaging layer 2, they will contact the anti-oxidation coating layer 1, causing the volume expansion of the PVA to cause the density of the nano-material to decrease, thereby causing the barrier property of the oxidation-proof coating layer 1 to reduce oxygen molecules, resulting in ink. Oxidative drying.

The waterproof packaging layer 3 may be specifically made of a waterproof membrane material, and may specifically be: polyethylene (PE), biaxially oriented polypropylene film (BOPP), polyethylene terephthalate (PET) or cast polypropylene film. (CPP) and so on.

Preferably, the length and width of the waterproof packaging layer 3 are 1-3 cm larger than the length and width of the paper packaging layer 2, so that the waterproof packaging layer 3 can be wrapped just outside the paper packaging layer 2.

The outer surface of the paper packaging layer 2 is joined to the inner surface portion of the waterproof packaging layer 3, and the joint area is preferably less than 20% to facilitate separation therebetween. The connection can be broken under the action of an external force, so that the waterproof packaging layer 3 is separated from the paper packaging layer 2 in order to remove the waterproof packaging layer 3. The waterproof packaging layer 3 that has been removed can be environmentally recovered separately.

When using oxidatively polymerized inks in recyclable packaging, follow these steps:

First, an external force is applied to separate the waterproof packaging layer 3 from the paper packaging layer 2, and the waterproof packaging is removed. Layer 3.

Subsequently, the paper packaging layer 2 is opened to extrude the ink. Because it is a flexible packaging container, it can be combined with an extrusion device to deform the flexible packaging container to extrude the ink therein, thereby avoiding the inconvenience of manual operation and obtaining a better extrusion effect.

The paper packaging layer 2 is placed in a centralized manner for recycling. At this time, water molecules in the air are combined with the PVA in the oxidation preventing coating 3 through the paper packaging layer 2 to swell the PVA and destroy the oxygen barrier of the oxidation preventing coating. The performance of the ink remaining in the recyclable package can be quickly oxidized and dried to meet the requirement that the ink must be dried when the paper product is recycled.

In the recycling process, the paper packaging layer 2 can be placed in water at 20 ° C - 70 ° C, the anti-oxidation coating 3 will be completely dissolved in water to separate the ink from the paper packaging layer 2, thereby the paper packaging layer 2 Environmentally friendly recycling and decontamination of the separated ink.

A person skilled in the art should further appreciate that the elements and algorithm steps of the various examples described in connection with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of both, in order to clearly illustrate hardware and software. Interchangeability, the composition and steps of the various examples have been generally described in terms of function in the above description. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the solution. A person skilled in the art can use different methods for implementing the described functions for each particular application, but such implementation should not be considered to be beyond the scope of the present invention.

The steps of a method or algorithm described in connection with the embodiments disclosed herein can be implemented in hardware, a software module executed by a processor, or a combination of both. The software module can be placed in random access memory (RAM), memory, read only memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disk, removable disk, CD-ROM, or technical field. Any other form known In the storage medium.

The specific embodiments of the present invention have been described in detail with reference to the preferred embodiments of the present invention. All modifications, equivalent substitutions, improvements, etc., made within the spirit and scope of the invention are intended to be included within the scope of the invention.

Claims

A recyclable package for oxidatively polymerizing ink, characterized in that the recyclable package comprises:

a paper packaging layer, which is a sealed flexible packaging container for accommodating the oxidative polymerization type ink;

An oxidation-proof coating comprising polyvinyl alcohol PVA and a nano material, wherein a mass ratio of the nano material to the PVA is from 1% to 80%; and the oxidation resistant coating is applied to the paper packaging layer An inner surface for blocking oxygen molecules from penetrating the oxidation preventing coating to contact the oxidative polymerization type ink to oxidize and dry the ink;

a waterproof packaging layer wrapped on the outer surface of the paper packaging layer and having a sealing structure for blocking water molecules from entering the waterproof packaging layer through the waterproof packaging layer, causing the oxidation preventing coating to form oxygen molecules The barrier properties are degraded, causing the ink to oxidatively dry.
The recyclable package of claim 1 wherein the nanomaterial comprises: an organic nanomaterial and/or an inorganic nanomaterial.
The recyclable package according to claim 2, wherein the organic nano material is specifically: nanocellulose;

The nanocellulose has a length of from 1 nm to 100 nm.
The recyclable package according to claim 3, wherein the nanocellulose is specifically a hydrophobically modified or oleophobic modified nanocellulose.
The recyclable package according to claim 2, wherein the inorganic nanomaterial is specifically: nano silica or nano montmorillonite.
The recyclable package according to claim 5, wherein the nano silica is specifically: hydrophobic modified or oleophobic modified nano silica; the nano montmorillonite is specifically: hydrophobic modification Sexual or oleophobic modified nano-montmorillonite.
The recyclable package according to claim 1, wherein the waterproof packaging layer is made of a waterproof membrane material comprising: polyethylene PE, biaxially oriented polypropylene film BOPP, polyparaphenylene. Either ethylene diformate PET and cast polypropylene film CPP.
The recyclable package according to claim 1, wherein an outer surface of the paper packaging layer is connected to an inner surface portion of the waterproof packaging layer; the connection is broken by an external force, so that the waterproofing The packaging layer is separated from the paper packaging layer.
The recyclable package according to claim 8, wherein when the oxidative polymerization type ink in the recyclable package is used, the waterproof packaging layer which has been separated from the paper packaging layer is first removed, Opening the paper packaging layer to extrude the ink, and then water molecules in the air are combined with PVA in the oxidation preventing coating layer to swell the PVA and destroy the oxygen barrier property of the oxidation preventing coating. The ink remaining in the recyclable package is oxidatively dried.
The recyclable package according to claim 1, wherein the sealing of the paper packaging layer coated with the anti-oxidation coating is specifically a glue seal or a thermoplastic seal; the seal of the waterproof packaging layer Specifically, a thermoplastic seal is used.