CN113736376A - Decorative membrane and preparation method for attaching decorative membrane in mold - Google Patents
Decorative membrane and preparation method for attaching decorative membrane in mold Download PDFInfo
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- CN113736376A CN113736376A CN202111036674.3A CN202111036674A CN113736376A CN 113736376 A CN113736376 A CN 113736376A CN 202111036674 A CN202111036674 A CN 202111036674A CN 113736376 A CN113736376 A CN 113736376A
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J7/00—Adhesives in the form of films or foils
- C09J7/20—Adhesives in the form of films or foils characterised by their carriers
- C09J7/22—Plastics; Metallised plastics
- C09J7/24—Plastics; Metallised plastics based on macromolecular compounds obtained by reactions involving only carbon-to-carbon unsaturated bonds
- C09J7/245—Vinyl resins, e.g. polyvinyl chloride [PVC]
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J5/00—Adhesive processes in general; Adhesive processes not provided for elsewhere, e.g. relating to primers
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J7/00—Adhesives in the form of films or foils
- C09J7/20—Adhesives in the form of films or foils characterised by their carriers
- C09J7/22—Plastics; Metallised plastics
- C09J7/24—Plastics; Metallised plastics based on macromolecular compounds obtained by reactions involving only carbon-to-carbon unsaturated bonds
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J7/00—Adhesives in the form of films or foils
- C09J7/20—Adhesives in the form of films or foils characterised by their carriers
- C09J7/22—Plastics; Metallised plastics
- C09J7/25—Plastics; Metallised plastics based on macromolecular compounds obtained otherwise than by reactions involving only carbon-to-carbon unsaturated bonds
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J7/00—Adhesives in the form of films or foils
- C09J7/20—Adhesives in the form of films or foils characterised by their carriers
- C09J7/22—Plastics; Metallised plastics
- C09J7/25—Plastics; Metallised plastics based on macromolecular compounds obtained otherwise than by reactions involving only carbon-to-carbon unsaturated bonds
- C09J7/255—Polyesters
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J7/00—Adhesives in the form of films or foils
- C09J7/50—Adhesives in the form of films or foils characterised by a primer layer between the carrier and the adhesive
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2301/00—Additional features of adhesives in the form of films or foils
- C09J2301/10—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive tape or sheet
- C09J2301/12—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive tape or sheet by the arrangement of layers
- C09J2301/122—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive tape or sheet by the arrangement of layers the adhesive layer being present only on one side of the carrier, e.g. single-sided adhesive tape
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2433/00—Presence of (meth)acrylic polymer
- C09J2433/006—Presence of (meth)acrylic polymer in the substrate
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2455/00—Presence of ABS
- C09J2455/006—Presence of ABS in the substrate
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2467/00—Presence of polyester
- C09J2467/006—Presence of polyester in the substrate
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2469/00—Presence of polycarbonate
- C09J2469/006—Presence of polycarbonate in the substrate
Abstract
The invention provides a decorative film and a preparation method for attaching the decorative film in a mold. The preparation method for attaching the decorative film in the mold comprises the following steps: the method comprises the steps of manufacturing patterns and a glue layer on a thermoplastic plastic membrane, and dividing an inner cavity of a mold into a first cavity and a second cavity through the thermoplastic plastic membrane. After the inner cavity of the mold is vacuumized and heated, atmospheric pressure is only supplemented to the first cavity, the vacuum pressure is utilized to complete the attachment of the thermoplastic plastic film, and the patterns are displayed on the surface of the product to complete the attachment of the product. The vacuum-environment-friendly adhesive tape completely avoids the problem that bubbles appear after the thermoplastic plastic film is adhered on a product, realizes the purpose of stably adhering the product, and improves the production quality of the product.
Description
Technical Field
The invention relates to the field of decorative films, in particular to a decorative film and a preparation method for attaching the decorative film in a mold.
Background
The aesthetic degree of commodity appearance is decorated through decorating the diaphragm generally for the outward appearance on product surface satisfies different crowds' demand, and this technique roughly can divide into rendition technique and attached technique, and then accomplishes the purpose of attaching the decoration on commodity surfaces such as synthetic leather, computer, communication product shell, building material or plastics.
The attaching defective rate of the existing decorative film is high, the main problem is that bubbles appear on the surface of a product easily after the attaching decorative film is attached, and meanwhile, the appearance attractiveness of the product is also influenced.
Disclosure of Invention
The invention provides a decorative film and a preparation method for attaching the decorative film in a mold, and aims to solve the problem that the existing attaching method of the decorative film is high in defective rate.
The invention is realized by the following steps: a decorative film, comprising:
a thermoplastic film layer;
the pattern layer is arranged on one surface of the thermoplastic plastic film layer; and
and the glue layer is arranged on the other surface of the thermoplastic plastic film layer, or is arranged on the thermoplastic plastic film layer where the pattern layer is arranged.
Preferably, the pattern is made by printing, embossing, vacuum evaporation or laser.
Preferably, when the thermoplastic film is ABS, the glue layer is disposed on the other surface of the thermoplastic film, or, when the thermoplastic film is transparent PMMA, PET or PC, the glue layer is disposed on the pattern layer.
Preferably, the thickness of the transparent PMMA, PET or PC is 50 μm to 200 μm.
Preferably, the thickness of the ABS is 50 μm to 500. mu.m.
Preferably, when the thermoplastic plastic film is ABS, a transparent resin layer is coated on the surface of the thermoplastic plastic film having the pattern layer.
Also provides a preparation method for attaching the decorative film in the die, wherein the thermoplastic plastic film is the decorative film, and the preparation method comprises the following steps:
manufacturing a pattern layer on one surface of a thermoplastic plastic membrane, coating a glue layer on the other surface of the thermoplastic plastic membrane when the thermoplastic plastic membrane is ABS, and coating a glue layer on the thermoplastic plastic membrane with the pattern layer when the thermoplastic plastic membrane is transparent PMMA, PET or PC;
placing a thermoplastic film in an inner cavity of a mold, wherein the thermoplastic film divides the inner cavity of the mold into a first cavity and a second cavity;
vacuumizing the first chamber and the second chamber to be in a negative pressure state;
heating the inner cavity of the mold;
supplementing atmospheric pressure to the first cavity, keeping the second cavity in a negative pressure state, attaching the surface of the thermoplastic plastic film where the adhesive layer is located to the surface of the product, and displaying the pattern on the surface of the product;
and the first cavity and the second cavity recover to normal atmospheric pressure values, the heating of the inner cavity of the mold is stopped, and a finished product is taken out.
Preferably, the "filling the first chamber with atmospheric pressure" includes:
continuously increasing the air pressure of the first chamber to a positive pressure.
Preferably, the process of "filling the first chamber with atmospheric pressure and continuously increasing the atmospheric pressure of the first chamber to a positive pressure" further includes:
and continuously heating the inner cavity of the mold.
The invention has the beneficial effects that:
1. the method comprises the steps of firstly making patterns on a thermoplastic film, coating a layer of adhesive layer, utilizing the negative pressure of a vacuum environment to eliminate the interference of air, then changing the pressure value in a cavity, enabling the layer with the adhesive layer to be pasted on the surface of a product, simultaneously carrying out heating treatment to enable the adhesive layer to be in a molten state, achieving the purpose of firm pasting, and completely avoiding the problem that bubbles appear on the product after the thermoplastic film is pasted.
2. In the attaching process, the air pressure of the first cavity can be continuously increased, so that the thermoplastic plastic film can be closely attached to the surface of the product, the stability of the attached thermoplastic plastic film is guaranteed, and the uniformity of the surface of the attached product is high.
3. In the attaching process, the heating temperature can be continuously increased, so that the molten glue on the thermoplastic plastic film is in a complete molten state, and the effect of attaching more tightly is achieved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1 is a schematic structural diagram of a decorative film according to an embodiment of the present invention;
FIG. 2 is a schematic view of a decorative film having a transparent resin layer according to an embodiment of the present invention;
reference numerals:
10. a thermoplastic film layer; 20. a patterned layer; 30. a glue layer; 40. a transparent resin layer.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings of the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
The first embodiment,
Referring to fig. 1 and 2, the present embodiment provides a decorative film, which includes a thermoplastic film layer 10, a pattern layer 20 and a glue layer 30, wherein the pattern layer 20 is disposed on one surface of the thermoplastic film layer 10, and the glue layer 30 is disposed on the other surface of the thermoplastic film layer 10, or the glue layer 30 is disposed on the pattern layer 20. The patterned layer 20 may be formed by printing, embossing, vacuum evaporation or laser.
The thermoplastic film in this embodiment is PMMA (Polymethyl methacrylate) or ABS (acrylonitrile-butadiene-styrene copolymer). PET (Polyethylene terephthalate, abbreviated as PET or PEIT) is commonly called polyester resin. PC is a polycarbonate, which is a tough thermoplastic resin. The thickness of the transparent PMMA, PET or PC is 50-200 μm, the thickness of ABS is 50-500 μm, and the thinner hierarchical design ensures that the thickness of the whole decorative film is thinner, thereby realizing the purpose of good decorative effect.
Polymethyl methacrylate (PMMA) is a popular name. The chemical name of the high molecular transparent material is polymethyl methacrylate, which is a high molecular compound polymerized by methyl methacrylate. Is an important thermoplastic which was developed earlier. The organic glass is classified into colorless transparent, colored transparent, pearly-lustre and embossed organic glass. Organic glass is commonly called acrylic, medium acrylic and acrylic, and has the advantages of better transparency, chemical stability, mechanical property and weather resistance, easy dyeing, easy processing, beautiful appearance and the like. Organic glass is also called gelatin glass, acrylic, etc.
ABS resin is one of five synthetic resins, its impact resistance, heat resistance, low temperature resistance, chemical resistance and electrical property are excellent, and it also has the characteristics of easy processing, stable product size and good surface gloss, and can be easily coated and colored, and can also be used for secondary processing of surface spraying metal, electroplating, welding, hot-pressing and bonding, etc., and can be extensively used in the industrial fields of machinery, automobile, electronic and electric appliances, instruments and meters, textile and building, etc., so that it is a thermoplastic engineering plastic with extensive application. Acrylonitrile-butadiene-styrene copolymers are terpolymers composed of acrylonitrile, butadiene and styrene. The English name is acrylonitrile-butadiene-styrene copolymer, ABS for short. ABS is generally a pale yellow or milky white pellet non-crystalline resin.
When the pattern layer 20 is made on PMMA, PET or PC, the transparent characteristic can clearly show the made pattern, and the pattern layer 20 can be protected, so that PMMA, PET or PC can be attached to a product through the glue layer on the pattern layer. The PMMA has the advantages of mechanical property, weather resistance, easiness in dyeing, easiness in processing, attractive appearance and the like, and the appearance of the product is attractive after the thermoplastic plastic film is attached to the product.
The PMMA film is used as an example for explanation, the decorative film made of PMMA only has a three-layer structure, the transparent performance of PMMA is mainly utilized, patterns can be clearly fed back, the adhesive layer 30 is used for adhesion, and the decorative film is attached to the surface of a product in a smooth mode, so that the film can be coated on the appearance of the product, and the attractiveness of the appearance of the product can be improved. The adhesive layer 30 may be a hot melt adhesive, and may be attached by heating, so that the strength of attachment is relatively higher.
When the ABS is used for manufacturing the pattern, the ABS has the characteristics of easy coating and coloring, secondary processing such as surface metal spraying, electroplating, welding, hot pressing, bonding and the like, the pattern is manufactured on the ABS simply, and the pattern manufacturing effect is good. After the pattern is manufactured, a layer of transparent resin is coated on the surface of the pattern, so that the pattern is clearly displayed, the pattern is protected, and the appearance attractiveness of the thermoplastic plastic membrane is improved. When in use, the ABS adhesive layer on the other surface is adhered to the surface of a product to achieve the effect of decorating the outer surface of the product.
As shown in fig. 2, in this embodiment, when the thermoplastic film is ABS, a transparent resin layer 40 is coated on the surface of the thermoplastic film having the pattern layer 20, and the transparent resin layer 40 is made of a transparent resin layer, and can protect the pattern layer 20 by protecting the pattern, so that the decorative film has a four-layer structure. When the product is in use, the patterns can be protected to a certain extent, the patterns are prevented from being damaged, and the appearance attractiveness of the product is improved.
Example II,
The embodiment provides a preparation method for attaching a decorative film in a mold, which comprises the following steps: the method comprises the steps of manufacturing a pattern layer 20 on one surface of a thermoplastic plastic membrane 10, coating a glue layer 30 on the other surface of the thermoplastic plastic membrane 10 when the thermoplastic plastic membrane 10 is ABS, and coating the glue layer 30 on the thermoplastic plastic membrane 10 with the pattern layer 20 when the thermoplastic plastic membrane 10 is transparent PMMA, PET or PC. Placing thermoplastic film 10 in the inner chamber of mould, and thermoplastic film 10 separates into first cavity and second cavity with the inner chamber of mould, and the mould has last mould and lower mould, carries out the compound die through sealed mode, can install thermoplastic film 10 on the die assembly surface, separates into first cavity with the last mould of mould, and its lower mould is the second cavity. Vacuumizing the first chamber and the second chamber to be in a negative pressure state; heating the inner cavity of the mold; supplementing atmospheric pressure to the first chamber, keeping the second chamber in a negative pressure state, attaching the surface of the thermoplastic film 10 where the glue layer 30 is located to the surface of the product, and displaying the patterns on the surface of the product; and the first cavity and the second cavity recover to normal atmospheric pressure values, the heating of the inner cavity of the mold is stopped, and the attached product is taken out.
An inner cavity is formed after an upper die and a lower die of the die are assembled, the die is divided into a first cavity and a second cavity by taking the assembly surfaces of the upper die and the lower die as separation surfaces, the inner cavity of the upper die is called as the first cavity, and the inner cavity of the lower die is called as the second cavity. And the equipment for vacuumizing the inner cavity of the mold can be a vacuum forming machine.
The patterned layer 20 on the thermoplastic film 10 may be formed by printing, embossing, vacuum evaporation or laser. After the pattern is formed, the thermoplastic film 10 is coated with a glue layer 30 to complete the preparation of the thermoplastic film 10.
When attached, put into the inner chamber of mould with this thermoplastic film 10, thermoplastic film 10 has the one side orientation second cavity of glue layer, sets up a elevating platform that goes up and down towards first cavity in the second cavity, and the elevating platform can drive through the cylinder to the product that will need attached thermoplastic film 10 is placed on the elevating platform. And the area of the thermoplastic film 10 is larger than the area of the cross section of the inner cavity of the mold, so that the thermoplastic film 10 can separate the upper mold from the lower mold, and the upper mold and the lower mold are spliced together to divide the interior of the mold into a first cavity and a second cavity.
After the die assembly of the die is completed and the thermoplastic film 10 is installed, the inner cavity of the die is vacuumized (the vacuum forming machine can simultaneously vacuumize the first cavity and the second cavity through two parallel pipelines) so as to eliminate the interference of air on the film and heat the inner cavity of the die. Then, atmosphere is supplemented into the first cavity, the second cavity is still in a vacuum state, and meanwhile, the lifting mechanism in the second cavity is lifted to enable the product to push the thermoplastic plastic membrane, so that pressure difference is formed between the first cavity and the second cavity, the product and the thermoplastic plastic membrane 10 are extruded and attached, the purpose of attaching the thermoplastic plastic membrane 10 to the surface of the product is achieved, and meanwhile, the attractiveness of the surface of the product is improved through patterns.
After the completion, the first chamber and the second chamber are restored to the state of normal atmospheric pressure, and the heating is stopped, and the attached product is taken out. The thermoplastic plastic film 10 is attached in a vacuum and positive-negative pressure mode, so that the influence of air can be completely eliminated, the problem of bubbles on the surface of a product after attachment is avoided, and the production quality is improved.
Further, after the atmosphere is mended into first cavity in this embodiment, the atmospheric pressure that can continuously increase first cavity is the malleation, through the atmospheric pressure of constantly increasing first cavity, can reach closely attached on the product surface with thermoplastic film 10, avoids attached not firm problem to take place.
Of course, in order to improve the quality of the thermoplastic film 10, the pressure is maintained during the attachment, that is, the pressure is maintained within the artificially set pressure range for a artificially set time period, so as to ensure that the thermoplastic film 10 is completely attached to the product.
In this embodiment, the process of supplementing atmospheric pressure to the first chamber and continuously increasing the atmospheric pressure of the first chamber to positive pressure further includes: and continuously heating the inner cavity of the mold. The adhesive layer 30 of the thermoplastic film 10 can be completely melted by continuously heating up, so that the adhesion degree of the thermoplastic film 10 and the product is improved.
Specifically, when the inner cavity of the mold is heated for the first time, the glue layer 30 on the thermoplastic plastic film 10 is only heated to a semi-molten state, and when the thermoplastic plastic film 10 is attached to a product, the glue layer 30 is heated through continuous temperature rise, so that the glue layer 30 is in a completely molten state, and the purpose that the thermoplastic plastic film 10 is completely attached to the product is achieved.
In the embodiment, a lifting platform for bearing products is arranged in the second chamber; when atmospheric pressure is supplemented to the first cavity, the second cavity is kept in a negative pressure state, one side of the adhesive layer of the thermoplastic plastic membrane 10 is attached to the surface of a product, and the lifting platform moves towards the direction of the thermoplastic plastic membrane 10 to provide abutting pressure for attachment between the thermoplastic plastic membrane 10 and the product.
Specifically, before the use, place the product on lift platform earlier, can install the decoration diaphragm in last mould or lower mould opening part through the mounting to after lower mould and last mould compound die, separate last mould and lower mould through decorating the diaphragm, and then can carry out evacuation treatment through vacuum forming machine, realize utilizing the influence that vacuum environment got rid of the air. And when attached thermoplastic diaphragm 10, heat the inner chamber of intensification to the mould through the heating unit, become the atmospheric pressure of first sealed intracavity simultaneously and malleation, lift platform removes product and thermoplastic diaphragm 10 contact, utilizes pressure differential to make thermoplastic diaphragm 10 attached on the product surface, reaches high-efficient, high-quality pad pasting, avoids because the bubble appears in the pad pasting and leads to the problem of defective percentage.
The lifting platform in this embodiment includes the microscope carrier and drives the cylinder that the microscope carrier removed, and the cylinder setting is on the outer bottom surface of lower mould, and the output shaft of cylinder is sealed to run through the lower mould and is located inside the lower mould. The product is installed through the carrying platform, the purpose of stable installation of the product is achieved, the problem of deviation when the decorative film is attached is avoided, and the production quality is improved.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A decorative film, comprising:
a thermoplastic film layer;
the pattern layer is arranged on one surface of the thermoplastic plastic film layer; and
and the adhesive layer is arranged on the other surface of the thermoplastic plastic film layer or arranged on the pattern layer.
2. The decorative film of claim 1 wherein said pattern is printed, embossed, vacuum evaporated or laser formed.
3. The decorative film of claim 1, wherein the adhesive layer is disposed on the other surface of the thermoplastic film layer when the thermoplastic film is ABS, or on the thermoplastic film layer where the pattern layer is located when the thermoplastic film is transparent PMMA, PET or PC.
4. Decorative film according to claim 3, wherein the thickness of the transparent PMMA, PET or PC is between 50 μm and 200 μm.
5. The decorative film of claim 3, wherein the ABS has a thickness of 50 μm to 500 μm.
6. The decorative film of claim 3, wherein when said thermoplastic film is ABS, a transparent resin layer is coated on the surface of said thermoplastic film having said pattern layer.
7. A method for preparing a decorative film attached in a mold, wherein the thermoplastic film is the decorative film of any one of claims 1 to 6, comprising the steps of:
manufacturing a pattern layer on one surface of a thermoplastic plastic membrane, coating a glue layer on the other surface of the thermoplastic plastic membrane when the thermoplastic plastic membrane is ABS, and coating a glue layer on the thermoplastic plastic membrane with the pattern layer when the thermoplastic plastic membrane is transparent PMMA, PET or PC;
placing a thermoplastic film in an inner cavity of a mold, wherein the thermoplastic film divides the inner cavity of the mold into a first cavity and a second cavity;
vacuumizing the first chamber and the second chamber to be in a negative pressure state;
heating the inner cavity of the mold;
supplementing atmospheric pressure to the first cavity, keeping the second cavity in a negative pressure state, attaching the surface of the thermoplastic plastic film where the adhesive layer is located to the surface of the product, and displaying the pattern on the surface of the product;
and the first cavity and the second cavity recover to normal atmospheric pressure values, the heating of the inner cavity of the mold is stopped, and a finished product is taken out.
8. The method for manufacturing an in-mold decoration film according to claim 7, wherein after "filling the first chamber with atmospheric pressure",
continuously increasing the air pressure of the first chamber to a positive pressure.
9. The method according to claim 8, wherein the step of supplying atmospheric pressure to the first chamber and continuously increasing the atmospheric pressure of the first chamber to a positive pressure further comprises:
and continuously heating the inner cavity of the mold.
10. The method according to claim 7, wherein a lifting platform for supporting a product is disposed in the second chamber;
when the atmospheric pressure is supplemented into the first cavity, the second cavity is kept in a negative pressure state, and the side, where the glue layer of the thermoplastic plastic membrane is located, of the lifting platform moves towards the direction of the thermoplastic plastic membrane in the process of attaching the side, where the glue layer of the thermoplastic plastic membrane is located, to the surface of the product, and the pushing pressure is provided for attaching the thermoplastic plastic membrane to the product.
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| CN201842805U (en) * | 2010-10-26 | 2011-05-25 | 黎泳辰 | Plastic surface decorative direct injection film |
| CN103358649A (en) * | 2013-06-14 | 2013-10-23 | 3M材料技术（广州）有限公司 | Vacuum laminating device and method |
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2021
- 2021-09-06 CN CN202111036674.3A patent/CN113736376A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101351333A (en) * | 2005-12-28 | 2009-01-21 | 大日本印刷株式会社 | Decorated sheet for insert molding |
| CN201842805U (en) * | 2010-10-26 | 2011-05-25 | 黎泳辰 | Plastic surface decorative direct injection film |
| CN103358649A (en) * | 2013-06-14 | 2013-10-23 | 3M材料技术（广州）有限公司 | Vacuum laminating device and method |
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