CN211394343U

CN211394343U - Matte pre-coating film with surface writing function

Info

Publication number: CN211394343U
Application number: CN201821928414.0U
Authority: CN
Inventors: 武俊
Original assignee: Zhangjiagang Free Trade Zone Kangde Film Industry Co ltd
Current assignee: Zhangjiagang Free Trade Zone Kangde Film Industry Co ltd
Priority date: 2018-11-21
Filing date: 2018-11-21
Publication date: 2020-09-01
Anticipated expiration: 2028-11-21

Abstract

The utility model discloses a matte membrane of precoating with function is write on surface, including can writing matte layer, colored stratum lucidum, PET substrate layer, under coat, hot melt adhesive layer. Wherein, the writable matte layer is composed of resin and porous granular filler with ink absorption performance, and is coated on the surface of PET to ensure that the PET has the writing performance of a pencil, a ball-point pen and a sign pen, and the surface glossiness can be adjusted according to the actual requirement; the color transparent layer is formed by coating color ink with high light transmittance on the surface of PET, and a specific color is given to a product when needed; the primer layer is used for improving the adhesive force between the hot melt adhesive layer and the PET and ensuring that the product has good interlayer force when in use. The utility model discloses a product belongs to one kind of card membrane, is applied to fields such as medical treatment card, total mark card, membership card, gift card, and the ability of can writing on surface is convenient for register card holder's information.

Description

Matte pre-coating film with surface writing function

Technical Field

The utility model belongs to the card membrane class product in film composite material field, more specifically relates to a membrane of precoating of matt with function is write on surface.

Background

Since the late 80 s of the last century, the pre-coating film laminating process has gradually embodied the advantage of environmental protection and becomes one of the important means for the post-printing treatment of printed matters, however, with the economic development and the technological progress, the pre-coating film is not only applied to the field of printed matters.

According to market feedback, the card and certificate film is applied to the fields of medical cards, score cards, membership cards, gift cards and the like, has a certain market share due to the fact that the PET/EVA is in a structure, but sometimes a user needs to record some information on the card, and the conventional PET surface does not have the writing function of a ball pen or a sign pen. The utility model discloses it is exactly in order to solve this problem.

According to the data to be checked, most of the prior patent technologies are to coat a special coating on the surface of PET, so that the PET has the function of repeated erasing and writing and is mainly used for writing boards. For example, a novel writable UV film with the authorization publication number CN 205086430U, and an environment-cured water-based paint with the authorization publication number CN101818014A for erasable surfaces, no technical disclosure of PET pre-coating film suitable for writing of pencils, ball-point pens or sign pens is found.

SUMMERY OF THE UTILITY MODEL

Can write the problem for the PET surface of solving card membrane, give the PET surface characteristic such as abundant colorful colour, the changeable gloss of moderate degree simultaneously, the utility model provides a membrane of precoating of inferior light with surface writing function. The matte PET pre-coating film surface can be smoothly written by a pencil, a ball-point pen or a sign pen, the glossiness can be adjusted according to user preference, a plurality of colors can be given to the film, the transparency of the product is not influenced, and the richness of the product is increased.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the matte precoating film with the surface writing function is characterized in that the structure of the precoating film sequentially comprises a matte writable layer, a color transparent layer, a PET (polyethylene terephthalate) substrate, a bottom coating and a hot melt adhesive layer from top to bottom.

Preferably, the matte writable layer is composed of a resin, a particulate filler having ink-absorbing properties. The resin is used as a connecting material and is formed by mixing one or more of waterborne acrylic acid, waterborne polyurethane or waterborne polyester with self-extinction resin, and the surface glossiness of the product can be adjusted by adjusting the content of the self-extinction resin; the porous granular filler with ink absorbability can reduce the surface friction coefficient and the drying speed of the pen ink in the coating;

preferably, the thickness of the matte writable layer is 1-3 microns.

Preferably, the color transparent layer is formed by coating transparent ink on the surface of the PET, has extremely low covering power and high transparency, can be coated with corresponding colors according to requirements, and can also be not provided with the color transparent layer;

preferably, the thickness of the color transparent layer is 0-3 microns.

Preferably, the PET base material has good stiffness and transparency, and the thickness is 50-150 micrometers;

preferably, the coating of the base coat is an aqueous polyethyleneimine solution, an aqueous polyurethane solution or an aqueous acrylic acid solution;

preferably, the thickness of the bottom coating is 0.01-0.1 micron;

preferably, the coating of the hot melt adhesive layer is one or more of ethylene-vinyl acetate copolymer, ethylene-ethyl acrylate copolymer, ethylene-acrylic acid copolymer, ethylene-methyl acrylate copolymer and low density polyethylene;

preferably, the thickness of the hot melt adhesive layer is 50-150 micrometers.

Preferably, the matte precoating film with the surface writing function has the advantages that the product disclosed by the utility model not only has the surface writable and adjustable surface gloss, but also retains the general performances of precoating film products with heat resistance, high surface tension and the like.

The invention has the following beneficial effects:

1. the utility model discloses a can write matt PET membrane of precoating can provide multiple glossiness and color, provides bigger degree of freedom for the design of card. The lower gloss provides a comfortable, elegant visual experience for the customer.

2. The utility model discloses a can write matt PET precoating membrane surface can be with the visible writing instrument smoothness of everywhere such as pencil, ballpoint or sign pen write, and rapid draing has given the new functional of card and card product.

3. This use novel disclosed inferior light PET of can writing membrane of precoating not only can be used for card class product, has remain the relevant performance of the membrane of precoating for the packing simultaneously, and application scope is very extensive.

Drawings

FIG. 1 is a schematic cross-sectional view of a matte pre-coating film according to an embodiment of the present invention;

FIG. 2 is a schematic cross-sectional view of a pre-coated membrane according to another embodiment of the present invention;

FIG. 3 is a flow chart illustrating the manufacturing process of the sub-coating film according to an embodiment of the present invention.

The meaning of the respective reference numerals in the figures:

1-writable matte layer, 2-color transparent layer, 3-PET substrate layer, 4-bottom coating layer and 5-hot melt adhesive layer.

Detailed Description

In order to explain the present invention more clearly, the present invention will be further described with reference to the preferred embodiments and the accompanying drawings. It is to be understood by persons skilled in the art that the following detailed description is illustrative and not restrictive, and is not to be taken as limiting the scope of the invention.

There is a card membrane now, be applied to fields such as medical treatment card, total mark card, membership card, gift card, the structure is PET/EVA, but the user need record some information on the card sometimes, however conventional PET surface does not possess the function that ballpoint or sign pen write, in order to solve this problem the utility model provides a matte PET membrane of precoating with function is write on surface, can solve the problem of writing on PET surface, give PET rich and colorful colour on surface simultaneously, characteristics such as the changeable gloss of moderate degree, the utility model provides a matte PET membrane surface of precoating can write with pencil, ballpoint or sign pen smoothness, and the glossiness can adjust according to user's hobby, can also give some colors of film, does not influence the prerequisite of product transparency, increases the richness of product.

The utility model discloses a sub-gloss precoating film capable of writing, which comprises a writable sub-gloss layer 1, a color transparent layer 2, a PET substrate layer 3, a bottom coating 4 and a hot melt adhesive layer 5, wherein the writable sub-gloss layer 1 is composed of resin and porous granular filler with ink absorption performance, and is coated on the PET surface to ensure that the PET surface has the writing performance of a pencil, a ball pen and a sign pen, and the surface glossiness can be adjusted according to the actual demand; the color transparent layer 2 is formed by coating color ink with high light transmittance on the surface of PET, and a specific color is given to a product when needed; the primer layer 4 is used for improving the adhesion between the hot melt adhesive layer 5 and the PET, and ensuring that the product has good interlaminar strength in use. The utility model discloses a product belongs to one kind of card membrane, is applied to fields such as medical treatment card, total mark card, membership card, gift card, and the ability of can writing on surface is convenient for register card holder's information.

The technical scheme of the utility model is further explained by combining the attached drawings as follows:

the utility model provides a pair of inferior gloss membrane of precoating with function is write on surface, the structure from the top down of membrane of precoating can write layer, colored stratum lucidum 2, PET substrate layer 3, under coat 4 and hot melt adhesive layer 5 for inferior gloss in proper order.

In one embodiment of the present invention, the matte writable layer is composed of a resin, a particulate filler having ink absorption. The resin is used as a connecting material and is formed by mixing one or more of waterborne acrylic acid, waterborne polyurethane or waterborne polyester with self-extinction resin, and the surface glossiness of the product can be adjusted by adjusting the content of the self-extinction resin; the porous granular filler with ink absorbability can reduce the surface friction coefficient and the drying speed of the pen ink in the coating; the matte writable layer comprises resin and granular filler with ink absorption, can realize the surface coating of the writable matte PET precoating film, can smoothly write by using visible writing tools such as pencils, ball pens or sign pens and the like, is quickly dried, and endows the card and certificate products with new functionality.

In a specific embodiment of the present invention, the thickness of the matte writable layer is 1 to 3 microns, and the thickness can be 1 micron, 1.5 microns or 3 microns according to the difference of the processing technology.

In a specific embodiment of the present invention, the color transparent layer 2 is formed by coating transparent ink on the surface of PET, and has extremely low covering power and high transparency, and can be coated with corresponding colors according to requirements, or not provided with the color transparent layer; the color clear layer 2 allows the writable matte PET pre-coat film to provide a wide variety of gloss and color, providing greater freedom in card design. The lower gloss provides a comfortable, elegant visual experience for the customer.

In a specific embodiment of the present invention, the thickness of the color transparent layer 2 is 0 to 3 microns, and the thickness can be selected to be 0 micron, 1.5 microns or 3 microns according to the difference of the processing technology and the requirement.

In a specific embodiment of the present invention, the PET substrate has good stiffness and transparency, and has a thickness of 50 to 150 micrometers, and the thickness can be 50 micrometers, 100 micrometers or 150 micrometers according to the difference of the processing technology.

In a specific embodiment of the present invention, the coating of the undercoat layer 4 is an aqueous solution of polyethyleneimine, an aqueous solution of polyurethane, or an aqueous solution of acrylic acid;

in one embodiment of the present invention, the thickness of the bottom coating 4 is 0.01 to 0.1 micrometers, and may be 0.01 micrometers, 0.05 micrometers or 0.1 micrometers according to different processing techniques;

in a specific embodiment of the present invention, the coating of the hot melt adhesive layer 5 is one or more of ethylene-vinyl acetate copolymer, ethylene-ethyl acrylate copolymer, ethylene-acrylic acid copolymer, ethylene-methyl acrylate copolymer and low density polyethylene;

in a specific embodiment of the present invention, the thickness of the hot melt adhesive layer 5 is 50 to 150 micrometers, and the thickness can be 50 micrometers, 100 micrometers or 150 micrometers according to the difference of the processing technology.

In one embodiment of the present invention, the matte pre-coating film with surface writing function has the advantages of surface writing capability, adjustable surface gloss, and good heat resistance and high surface tension.

The utility model provides a can write matt PET membrane of precoating not only can be used for card class product, has remain the packing simultaneously with the correlation performance of the membrane of precoating, and application scope is very extensive.

In a specific embodiment of the utility model, a matte precoating film with surface writing function includes 50 microns thick PET substrate layer 3, orange color transparent layer 2 that 2 microns are thick at PET substrate layer 3's upper surface coating one deck, can write matte layer 1 that 1 micron is thick at color transparent layer 2's upper surface coating one deck, use 60 gloss appearance test surface glossiness to reach 33GU, bottom coat 4 at PET substrate layer 33's back coating one deck 0.01 micron is thick, EVA hot melt adhesive layer 5 through the mode composite one deck 100 microns of extrusion casting after the drying, from this form a total thickness 153 microns orange can write matte PET precoating film, during the use, with this product and the PVC card that has the printing pattern, the gloss PET card precoating film is compound under 150 ℃ and 0.6 ~ 1.0MPa pressure, make card evidence product after cutting. The bright surface protects the printed pattern on the PVC surface, and the matte surface registers user information.

In a specific embodiment of the utility model, a matt pre-coating film with surface writing function comprises a PET substrate layer 3 with the thickness of 100 microns, a writable matt layer 1 with the thickness of 1.5 microns is coated on the upper surface of the PET substrate layer 3, a 60-degree gloss meter is used for testing the surface gloss to reach 15GU, and a colorful transparent layer 2 is not arranged; the back of the PET substrate layer 3 is coated with a 0.01 micron thick bottom coating layer 4, after drying, a 150 micron EVA hot melt adhesive layer 5 is compounded in an extrusion casting mode, so that an orange writable matte PET pre-coating film with the total thickness of 251.5 microns is formed, when the product is used, the product is compounded with a PVC card with a printing pattern and a bright PET card pre-coating film at the temperature of 150 ℃ and the pressure of 0.6-1.0 MPa, and the card product is prepared after cutting. The bright surface protects the printed pattern on the PVC surface, and the matte surface registers user information.

Thus, it should be appreciated by those skilled in the art that while a number of exemplary embodiments of the invention have been shown and described in detail herein, many other variations and modifications can be made, consistent with the principles of the invention, which are directly determined or derived from the disclosure herein, without departing from the spirit and scope of the invention. Accordingly, the scope of the present invention should be understood and interpreted to cover all such other variations or modifications.

Claims

1. A matte precoating film with a surface writing function is characterized in that,

the structure of the pre-coating film is sequentially a matte writable layer, a color transparent layer, a PET substrate layer, a bottom coating and a hot melt adhesive layer from top to bottom;

the color transparent layer is coated on the surface of the PET substrate layer through transparent printing ink, and the thickness of the color transparent layer is 0-3 microns.

2. The matte pre-coat film with surface writing function according to claim 1,

the thickness of the PET base material is 50-150 micrometers.

3. The matte pre-coat film with surface writing function according to claim 1,

the thickness of the bottom coating is 0.01-0.1 micrometer.

4. The matte precoating film with the surface writing function according to claim 1, wherein the thickness of the hot melt adhesive layer is 50-150 micrometers.