CN210362833U

CN210362833U - Laser shrink film label

Info

Publication number: CN210362833U
Application number: CN201920948649.4U
Authority: CN
Inventors: 林金笋
Original assignee: Guangzhou Liabel Packaging Co ltd
Current assignee: Guangzhou Liabel Packaging Co ltd
Priority date: 2019-06-21
Filing date: 2019-06-21
Publication date: 2020-04-21
Anticipated expiration: 2029-06-21

Abstract

The utility model discloses a radium-shine shrink film label, the structure includes face shrink film, glue layer, printing layer, the radium-shine layer of relief (sculpture) and the lining shrink film that from the top down the range upon range of setting, and the preparation method is including making the radium-shine moulded board of holographic relief (sculpture), preparation radium-shine film of relief (sculpture), electroplating, location secondary printing, compound and the shaping with face shrink film. The laser shrink film label combining the two processes can generate 360-degree three-dimensional effect, and is integrated with the container, so that the product has more artistic charm; the two layers of shrink films can protect the laser relief layer and drive the laser relief layer to shrink integrally, so that the structure of the laser relief layer is kept to the maximum extent. Because the key process adopts low-temperature paper feeding and compounding, the shrinkage performance of the material is not influenced. The utility model is used for flexible package label field.

Description

Laser shrink film label

Technical Field

The utility model relates to a soft-packing label field of high-end wine, cosmetics, beverage and gift especially relates to a radium-shine shrink film label.

Background

Platinum relief laser technology: an intuitive anti-counterfeiting technology, which adopts a platinum relief plate making process combined with a UV mould pressing technology to manufacture a platinum relief film. The platinum relief film has strong stereoscopic impression, good identification brightness, higher precision and metal relief effect.

Labeling a heat shrinkable film: the heat shrinkable film label is a film label printed on a plastic film or a plastic tube by using special ink, and can be quickly shrunk along the outer contour of a container and tightly attached to the surface of the container when heated to 70 ℃ in the process of labeling, and mainly comprises a shrink sleeve type label and a shrink surrounding type label. The shrink sleeve type label is a cylindrical label made of a heat shrink film as a base material after printing, has the characteristic of convenient use, and is extremely suitable for special-shaped containers.

Laser positioning printing: the positioning printing refers to that on high-speed full-automatic printing equipment, through electric eye identification, the printing content is positioned and printed on the specific hologram position on the special platinum relief film, and a bright 3D color platinum effect is presented. The platinum relief has fine grain, high resolution, high manufacturing difficulty and high anti-counterfeiting level.

The platinum relief film is applied to packaging and anti-counterfeiting because of uniqueness and uniqueness of appearance, and is one direction of packaging surface decoration in recent years. Different materials such as OPP, PET, PVC and the like are used, and the composite material can be used for different purposes such as compounding, transferring, hot stamping and the like; the embossing 3D effect is highlighted, and the application fields comprise carton packaging, adhesive labels and in-mold labels, but the embossing 3D effect is not applied to thermal shrinkage film packaging.

The reason why the thermal contraction film label is difficult to be combined with the platinum relief laser technology is that the thermal contraction film label needs to be deformed in the attaching process, and the marking and marking effect of the platinum relief film is easily damaged in the process. The prior art cannot overcome the problem at present, and after a special process is developed, the platinum relief laser technology and the thermal shrinkage film technology can be combined to make up for the technical blank.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a combine radium-shine shrink film label of platinum relief (sculpture) radium-shine technique and thermal contraction membrane technique simultaneously.

The utility model adopts the technical proposal that:

a laser shrink film label comprises a surface shrink film, a glue layer, a printing layer, a relief laser layer and an inner shrink film which are stacked from top to bottom, wherein the shrinkage rate of the surface shrink film is greater than that of the inner shrink film.

As an improvement of the scheme, the material of the surface shrinkage film is PET or PETG.

As an improvement of the scheme, the glue layer is UV composite glue.

As an improvement of the scheme, the inner shrink film is made of PVC.

As an improvement of the scheme, the thickness of the surface shrink film is 40u, and the thickness of the inner shrink film is 22 u.

The utility model has the advantages that:

the embossed laser label is a label which integrates three functions of anti-counterfeiting, sales promotion display and product beautification and is manufactured by using a laser holographic anti-counterfeiting technology, and the embossed laser label is five-color, if hidden, and if hidden, under the sunlight, the embossed laser label gives people a fantastic feeling and has unique artistic charm. The shrink film label is wrapped by a 360-degree ring, so that the characteristics of the product package are displayed to the maximum extent. The laser shrink film label combining the two processes can generate 360-degree three-dimensional effect, and is integrated with the container, so that the product has more artistic charm.

The laser shrink film label adopts a new structure and a new process, the two layers of shrink films can protect the laser relief layer and can drive the laser relief layer to shrink integrally, and the structure of the laser relief layer is kept to the maximum extent. Because the key process adopts low-temperature paper feeding and compounding, the shrinkage performance of the material is not influenced.

Drawings

The present invention will be further explained with reference to the accompanying drawings:

figure 1 is a cross-sectional view of a laser shrink film label.

Detailed Description

I know that the shrink film of PVC material can carry out the mould pressing radium-shine, can make the radium-shine membrane of relief (sculpture), but PVC material shrink performance is lower relatively, is unfavorable for warping the shrink of great bottleneck department, and the relative great PET of shrink performance or PETG material can be adopted to the top layer this moment.

Referring to fig. 1, the utility model relates to a laser shrink film label and a manufacturing method thereof. Laser shrink film label includes face shrink film 5, glue layer 4, printing layer 3, the laser layer 2 of relief (sculpture) and interior shrink film 1 that from the top down the stromatolite set up, and shrink film 1 need laminate the product in the use on, because the bending radius of face shrink film 5 is great, so face shrink film 5's shrinkage factor is greater than interior shrink film 1.

Preferably, the glue layer 4 is UV composite glue, and the UV composite is low-temperature composite, so that the shrinkage performance of the shrink film is not influenced. Therefore, the structure design and the process optimization are combined, and the difficulty in the prior art is overcome.

Preferably, the thickness of the surface shrink film 5 is 40u, and the thickness of the back shrink film 1 is 22 u.

A manufacturing method for manufacturing the laser shrink film label comprises the following steps.

S1, manufacturing a holographic relief laser mould pressing plate:

the laser holographic laser engraving technology is used for engraving patterns and electric eye color blocks on a nickel plate, and then the holographic relief laser mould pressing plate with good mechanical property is further processed by utilizing a vacuum coating or chemical plating method.

Because the laser film is an embossment positioning product, when the laser film is positioned by mould pressing, the position of holographic embossment laser printing needs to be calculated before plate making, embossment patterns are implanted into a specific position in a laser mould pressing plate, and then laser positioning mould pressing is carried out.

The manufacturing of the platinum relief laser label belongs to a relatively mature technology, wherein the manufacturing of the holographic relief laser mould pressing plate belongs to the previous process part of the former and is also a relatively mature technology; other techniques may of course be used for making the holographic embossed laser embossing plate.

For ease of understanding, one of the embodiments is described below. Firstly, determining the size of printing on a machine, and splicing the files into plates according to plate cylinder numbers; then, the manufactured relief laser patterns are spliced according to the size arrangement requirement of the plate cylinder, and an electric eye color block is engraved above the cross-shaped scribed line according to the printing length of each plate during splicing; the nickel plate is manufactured according to the spliced specification plate, the temperature and the speed of batch operation are kept the same in the die pressing, electroplating and cutting operations, and different expansion and contraction amounts of materials caused by different operation conditions are avoided. When the mould pressing plate is engraved, the cross gauge lines are complete, the gripping edge and the pull gauge have stepped arrows and cutting lines, and meanwhile, the positioning electric eye color block is engraved into the identification color bar with the similar frosting effect, so that the tracking electric eye can identify necessarily.

S2, manufacturing a relief laser film:

the 22uPVC shrink film is creatively selected as a base material for mould pressing, and the initial temperature of shrinkage deformation is 60 ℃.

Firstly, coating UV coating on the inward shrinkage film 1 by using a concave printing method, wherein the thickness of the UV coating is 0.15-0.30 mm. The UV coating should maintain the proper viscosity and coating weight while the entire coating process requires a sealed, dust-free, sterile, constant temperature and humidity environment. The thickness of the UV coating directly affects the depth of field effect of the relief pattern, depending on the product design.

Next, the holographic embossed laser molding plate manufactured in step S1 is used to perform a UV molding process, and at this time, the embossed laser layer 2 is formed on the upper surface of the back shrink film 1, that is, the back shrink film 1 and the embossed laser layer 2 together form the embossed laser film.

S3, electroplating:

after the relief laser film is manufactured, a layer of metal foil needs to be sprayed on the relief pattern in order to realize the platinum relief effect; one embodiment may be implemented using a vacuum aluminizing machine. The surface of the embossed laser film needs to be processed through vacuum coating so as to improve the printing adaptability and facilitate subsequent process processing; among the methods used are coating varnishes or corona treatment.

S4, positioning and secondary printing:

and (4) printing a new pattern on the upper surface of the embossed laser film prepared in the step (S3) by adopting a roller printing mode, wherein the used ink is transparent ink. The printing ink of secondary printing can not only protect the embossment pattern, but also can be mutually matched with the embossment pattern, thereby realizing rich display effect.

Preferably, the temperature of a workshop is kept at 18-20 ℃, and the humidity is kept at 50-70%; in order to eliminate static electricity generated by friction between a printed product and each paper feeding roller, a water-cooled roller is adopted as a roller for bearing the relief laser film.

The printing process is prior art and is not strictly limited herein. For ease of understanding, one of the embodiments is illustrated. And (4) manufacturing a printing plate according to the spliced file, firstly discharging a film, and carrying out overprinting inspection on the relief laser film. Since the embossing causes the material to deform telescopically, the layout needs to be adjusted appropriately. After the embossed laser film is spliced by the films, the films are sleeved with the Chinese character mi grids, the position coordinates of the moved films are found out, the films can be operated on a computer according to data, the computer adjusts the spliced plate to form another film, the overprint check is repeated by using the latest film, and the CTP plate can be formed after the correctness is confirmed.

S5, compounding with a surface shrinkage film 5:

the 40uPETG shrink film is creatively selected as the face shrink film 5. The low temperature environment can avoid damaging the shrinkage performance of the material, and the heat generated by the UV composite process is little. And S4, coating UV composite glue on the upper surface of the embossed laser film, laminating and combining the surface shrinkage film 5 and the embossed laser film through a UV composite process, wherein the temperature in the composite process is 18-25 ℃, and then manufacturing the label. In order to obtain a lower pressing temperature, the surface shrinkage film 5 and the embossed laser film are pressed by cold water rolls.

In yet another embodiment, the embossed laser film and the face shrink film are laminated by a solventless lamination process. A solvent-free compound machine belongs to the prior art, wherein a relief laser film and a shrink film are processed by the equipment, and the relief laser film and the shrink film are sent into the equipment after a solvent-free adhesive is coated and relevant processes are operated according to product use instructions.

The two schemes can ensure low-temperature compounding, so that the quality of the prepared label is good.

S6, forming:

and closing the compounded label, forming and packaging, and arranging a breathable pinhole during closing. The palm folding process can be directly realized by using a palm folding machine. It should be noted that the molded label is preferably stored at 25 ℃ or lower.

Of course, the design creation is not limited to the above embodiments, and the combination of different features of the above embodiments can also achieve good effects. Those skilled in the art can make equivalent changes or substitutions without departing from the spirit of the present invention, and such equivalent changes or substitutions are included in the scope defined by the claims of the present application.

Claims

1. A laser shrink film label is characterized in that: the laser embossing film comprises a surface shrink film, a glue layer, a printing layer, a relief laser layer and an inner shrink film which are stacked from top to bottom, wherein the shrinkage rate of the surface shrink film is greater than that of the inner shrink film.

2. The laser shrink film label of claim 1, wherein: the surface shrinkage film is made of PET or PETG.

3. The laser shrink film label of claim 2, wherein: the glue layer is UV composite glue.

4. The laser shrink film label of claim 3, wherein: the inner shrink film is made of PVC materials.

5. The laser shrink film label of claim 4, wherein: the thickness of the surface shrink film is 40u, and the thickness of the inner shrink film is 22 u.