CN116001187A - Production method and application of injection molding piece - Google Patents
Production method and application of injection molding piece Download PDFInfo
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- CN116001187A CN116001187A CN202211487349.3A CN202211487349A CN116001187A CN 116001187 A CN116001187 A CN 116001187A CN 202211487349 A CN202211487349 A CN 202211487349A CN 116001187 A CN116001187 A CN 116001187A
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Abstract
The production process and application of injection molding part includes the first taking carrier layer, attaching stereo texture layer to one surface of the carrier layer and stripping agent; then attaching a coloring layer or an electroplated layer or the coloring layer and the electroplated layer on the outer side surface of the three-dimensional texture layer, which is opposite to the carrier layer; the veneer board with the three-dimensional texture layer is obtained through the preparation; then placing the facing plate in a mould, coating adhesive on the side surface of the facing plate adjacent to the injection molding product on the side to be injection molded, and injecting injection molding material into the mould for injection molding; taking out the injection molding product from the mold, and stripping the carrier layer from the three-dimensional texture layer adhered to the injection molding product to obtain an injection molding product with the three-dimensional texture layer without the carrier layer; the application has the advantages that the application process does not contain the carrier layer but still keeps the three-dimensional texture display effect of the injection molding product, so that the deformation of the carrier layer cannot occur, and the facing display effect and the structure of the injection molding product are not affected.
Description
Technical Field
The application relates to the technical field of injection molding product veneers, in particular to a production method of an injection molding part and application thereof.
Background
The three-dimensional texture facing is an external facing which is adopted by the existing electronic, household electrical appliances and injection molding products, the printed color pattern layer is used as a film to be adhered on the products, or the three-dimensional texture facing is prepared on a carrier layer firstly and then is carried and combined with the injection molding products to form the products with three-dimensional texture effect; the three-dimensional texture effect of the color pattern layer is not obvious, and the color pattern layer is easy to warp or fall off when adhered to a product; the three-dimensional texture facing with the carrier layer is prepared firstly, and then the whole body is combined with an injection molding product to realize the decoration effect on the facing of the product, and the three-dimensional texture effect of the structure is more ideal and longer in maintenance time than that of the three-dimensional effect of direct bonding of the color pattern layer; however, the above-mentioned method of preparing three-dimensional texture surface and then combining with injection molding product to form product with three-dimensional texture effect still has certain disadvantages: because the facing contains a carrier layer, the carrier layer is often a sheet of organic material prepared in advance, such as PC, PET, PVC, etc., the carrier layer prepared from the organic material is made into the facing, the thickness of the facing cannot be too thick, the facing has a large thickness drop (the thickness of the layer of the injection molded product is thicker) compared with the thickness of the injection molded product to which the facing is attached, and the materials for preparing the facing and the carrier layer are also greatly different; therefore, the deformation of the carrier layer and the injection molding product is easy to occur due to the difference of the material properties of the carrier layer and the injection molding product and the fall of the thickness, particularly the carrier layer with thinner thickness is easier to deform, once the deformation is inevitably separated from the injection molding product, the deformation of the structure of the injection molding product is even caused, the display effect of the facing cannot be ensured, and the structure deformation of the product is also caused to influence the use effect.
The existing three-dimensional texture facing is inevitably used as an indispensable component of the facing, and is combined with an injection molding product, so that the integral structure of the carrier layer and the injection molding product is always maintained, and few reports of the use of the carrier layer are avoided from the perspective that deformation occurs between the carrier layer material and the injection molding product.
Disclosure of Invention
The application provides a production method of an injection molding piece, which is free of a carrier layer in the using process and still keeps the three-dimensional texture display effect of an injection molding product from the aspect that relative deformation is easy to occur between the carrier layer and the injection molding layer, so that the deformation of the carrier layer is avoided to influence the facing display effect and the structure of the injection molding product.
In order to solve the technical problems, the technical scheme adopted in the application is as follows: a method of producing an injection molded article, the method comprising the steps of:
(1) Firstly, taking a carrier layer, attaching a three-dimensional texture layer on one surface of the carrier layer, wherein the three-dimensional texture layer contains a stripping agent (or stripping can occur between the three-dimensional texture layer and the carrier layer); then attaching a coloring layer or an electroplated layer or both the coloring layer and the electroplated layer on the outer side surface of the three-dimensional texture layer, which is arranged opposite to the carrier layer; the veneer board with the three-dimensional texture layer is obtained through the preparation;
(2) Then placing the facing plate obtained in the step (1) in a mold, coating an adhesive on the side surface of the facing plate adjacent to the injection molding product on the side to be injection molded, and then injecting an injection molding material into the mold for injection molding to obtain an injection molding product with the facing plate;
(3) And taking out the injection molding product from the mold, and stripping the carrier layer from the three-dimensional texture layer adhered to the injection molding product to obtain the injection molding product with the three-dimensional texture layer without the carrier layer.
Further, the three-dimensional texture layer in the step (1) is at least provided with two layers, and at least one layer of the two three-dimensional texture layers contains a stripping agent; or the three-dimensional texture layer is at least provided with two layers, and the two three-dimensional texture layers are not adhered to each other and can be peeled off from each other.
Further, the three-dimensional texture layer in the step (1) has two layers, including a first three-dimensional texture layer and a second three-dimensional texture layer, at least one of the first three-dimensional texture layer and the second three-dimensional texture layer contains a stripping agent, the first three-dimensional texture layer is directly attached to the carrier layer, and the second three-dimensional texture layer is attached to the outer side surface of the first three-dimensional texture layer; the first three-dimensional texture layer and the carrier layer can be peeled off from the second three-dimensional texture layer.
Furthermore, the first three-dimensional texture layer is peeled off along with the separation between the carrier layer and the injection molding piece, and the second three-dimensional texture layer and the injection molding piece are mutually adhered; i.e. after injection molding is completed, it is necessary to separate the first three-dimensional texture layer together with the carrier layer from the injection molded part, while the second three-dimensional texture layer is left on the injection molded part for forming the exterior finish of the injection molded part.
Further, the first three-dimensional texture layer is a UV three-dimensional texture layer, and the second three-dimensional texture layer is a coating three-dimensional texture layer.
Further, the outer side surface of the three-dimensional texture layer opposite to the carrier layer in the step (1) is attached with a coloring layer or an electroplated layer.
Furthermore, in the step (1), a coloring layer and an electroplated layer are attached to the outer side surface of the three-dimensional texture layer opposite to the carrier layer, and the coloring layer and the three-dimensional texture layer are directly attached to each other, and the electroplated layer is located on the outer side surface of the coloring layer.
Furthermore, the injection molding piece is provided with at least one three-dimensional texture layer.
Further, the three-dimensional texture layer is obtained by hardening resin.
Further, the outer contour of the facing plate is matched with the contour of the outer facing of the injection molding piece; that is, the exterior facing profile of the injection molded article of the present application is a planar and area-capable area-covering structure of the exterior face of the injection molded article if it is planar, the corresponding facing sheet is a planar and area-capable area-covering structure of the exterior face of the injection molded article if the exterior facing profile of the injection molded article is a structure having arcuate edges, and the corresponding facing sheet is a structure having arcuate edges and area-capable of covering the exterior face of the injection molded article.
Further, the carrier layer of the present application is PET, PC, PMMA, PS, ABS, APETG, PETG, PP or a sheet structure made of PVC material.
The application of the injection molding piece is further provided, and the injection molding piece can be applied to the fields of furniture, household appliances, mobile phone shells, 3C products and the like.
The application has the advantages and beneficial effects that:
1. according to the method, the facing plate with the three-dimensional texture layer and the carrier layer is prepared firstly, then injection molding is carried out in the mold, an injection molding product with the three-dimensional texture layer facing is obtained, in addition, the stripping agent, namely the stripping layer, is arranged in the three-dimensional texture layer, after injection molding is finished, the carrier layer can be separated from the injection molding product through tearing, the three-dimensional texture layer (and the coloring layer or the electroplated layer) and the like are left on the injection molding product, the carrier layer is not formed on the injection molding product, the carrier layer is not contained as in a traditional three-dimensional texture product, and therefore the deformation problem caused by the existence of the carrier layer does not occur, and therefore, the injection molding product prepared by the method is not easy to deform, the three-dimensional texture effect is more durable, and the situation of tilting or separation does not occur.
2. The injection molding piece that this application obtained has the three-dimensional texture layer as the surface of show face, has not only kept the veneer effect of three-dimensional texture, is difficult for taking place to warp, and three-dimensional texture layer self is the resin hardening in addition and obtains, consequently it can effectively improve the hardness of injection molding product surface as the surface, and the hardness of its surface can be up to 4-6H, and then effectively prevents to scrape the flower deformation, and three-dimensional texture veneer is difficult for receiving the damage.
3. According to the preparation method, the finally obtained injection molding piece is formed by combining an independent three-dimensional texture layer (and a coloring layer or an electroplated layer) with the injection molding piece, and the single three-dimensional texture layer has the characteristics of being capable of being highly stretched and not deformed, so that the injection molding piece is more tightly covered and attached in the later period of combination with the injection molding piece, tilting can not occur, and the thickness of the injection molding piece is far smaller than that of a carrier layer and can not cause deformation influence on the injection molding piece.
4. The injection molding piece finally obtained does not have a carrier layer structure, so that the carrier layer is easy to deform due to the difference of material properties and thickness of the carrier layer and the injection molding product in the conventional mode, the injection molding layer is taken together to deform, and particularly, the injection molding layer of a mobile phone shell, a 3C product and the like is thicker in structure and is easy to deform.
5. According to the preparation method, a structure provided with two stereoscopic texture layers is adopted in a preferred scheme, one of the two stereoscopic texture layers is a UV stereoscopic texture layer (tight adhesion is realized between the photo-curing resin and the carrier layer), the other layer is a coated stereoscopic texture layer, the stereoscopic texture layer is directly adhered to the carrier layer, the other coated stereoscopic texture layer is adhered to the injection molding layer to form a whole, and the stripping agent is arranged in any stereoscopic texture layer or in both of the two stereoscopic texture layers, so that the structure has the following advantages compared with the single stereoscopic texture layer: firstly, the two stereo texture layers are respectively used for attaching the carrier layer and the injection molding layer on two sides, so that the carrier layer is stripped after injection molding is completed, one stereo texture layer can be stripped between the carrier layer and the other stereo texture layer, the process realizes stripping between the one stereo texture layer and the other stereo texture layer, compared with stripping between the single stereo texture layer and the carrier layer, the stripping is easier, the effect on the stereo texture layer on one side of the injection molding layer is smaller, and the exhibition of the stereo texture of an injection molding piece is more facilitated; secondly, two layers of three-dimensional texture layers are arranged, wherein the three-dimensional texture layers are peeled off along with the carrier layer and are coated with the three-dimensional texture layers along with the injection molding piece, and the preparation materials of the two layers of three-dimensional texture layers have obvious differences, so that the two layers of three-dimensional texture layers are more beneficial to complete peeling and separation and easier to separate, the three-dimensional texture layers cannot be damaged or influenced in the separation process, and the three-dimensional texture layers cannot be easily separated if the three-dimensional texture layers are only single-layered; in addition, the two layers of three-dimensional texture layers are still an integral structure between the three-dimensional texture layers and the carrier layer and after the three-dimensional texture layers are stripped from the injection molding part, and the structure can be reused as a facing structure with three-dimensional textures, and has high utilization value compared with a carrier layer which is stripped only; moreover, the present application provides at least two layers of three-dimensional texture, which are relatively small in thickness (typically less than 1 millimeter, in the micrometer range) as compared to the carrier layer and the injection molded layer, such that release agents are provided on either layer to facilitate release from each other.
Drawings
Fig. 1 is a schematic structural diagram of a flow chart of a facing sheet of embodiment 1 of the present application.
Fig. 2 is a schematic view of the structure of the combination of the facing sheet and the injection molded article of example 1 of the present application.
FIG. 3 is a schematic diagram of the structure of an injection molded product of example 1 of the present application.
Fig. 4 is a schematic structural view of an injection molded article according to example 1 of the present application.
Fig. 5 is a schematic structural diagram of a flow chart of a facing sheet of embodiment 2 of the present application.
Fig. 6 is a schematic view of the structure of the combination of the facing sheet and the injection molded article of example 2 of the present application.
FIG. 7 is a schematic diagram of the structure of an injection molded product of example 2 of the present application.
Fig. 8 is a schematic structural view of an injection molded article according to example 2 of the present application.
Fig. 9 is a schematic view of the structure of the combination of the facing sheet and the injection molded article of example 3 of the present application.
Fig. 10 is a schematic structural view of an injection molded product of example 3 of the present application.
Fig. 11 is a schematic view of the structure of an injection molding in example 3 of the present application.
Fig. 12 is a schematic view of the flow chart of example 4 facing sheet of the present application.
Fig. 13 is a schematic view of the structure of the combination of the facing sheet and the injection molded article of example 4 of the present application.
Fig. 14 is a schematic view of the structure of an injection molded product of example 4 of the present application.
Fig. 15 is a schematic structural view of an injection molded article of example 4 of the present application.
Fig. 16 a picture of the injection molded part of example 3 was prepared herein.
As shown in the accompanying drawings: a. the decorative plate comprises a decorative plate body, a carrier layer, a first surface, a second surface, a three-dimensional texture layer, a first three-dimensional texture layer, a second three-dimensional texture layer, a coloring layer, a plating layer, an adhesive layer and an injection molding layer.
Detailed Description
The technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments, and it is apparent that the described embodiments are only preferred embodiments, not all embodiments. All other embodiments, based on the embodiments herein, which a person of ordinary skill in the art would obtain without making any inventive effort, are within the scope of the invention;
furthermore, it is to be noted that: when an element is referred to as being "fixed" to another element (and other means similar to the means by which it is "fixed"), it can be directly on the other element or be present with another intervening element(s) by which it is fixed. When an element is referred to as being "connected" (and other means similar to "connected") to another element, it can be directly connected to the other element or intervening elements may also be present. When an element is referred to as being "disposed on" (and other means similar to "disposed on") another element, it can be directly on the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.
Example 1
(1) Firstly, a carrier layer (PET, PC, PMMA, PS, ABS, APETG, PETG, PP or a sheet made of organic materials such as PVC materials and the like can be in a transparent or semitransparent state), as shown in the accompanying figures 1-4, the carrier layer 1 is provided with a first surface 101 and a second surface 102 which are oppositely arranged along the thickness direction, a three-dimensional texture layer 2 is adhered on the first surface of the carrier layer 1, and a stripping agent is contained in the three-dimensional texture layer 2 (the three-dimensional texture layer 2 can be added in the preparation of three-dimensional texture layer resin materials, such as fatty acid vinegar, fatty acid metal salt, organic silicon resin and the like, the addition amount is less than 1 percent, or a spray type stripping agent can be used for spraying an external stripping agent such as organic silicon stripping agent and the like on the three-dimensional texture layer or the carrier layer to form a stripping effect); then attaching a coloring layer 3 on the outer side surface of the three-dimensional texture layer 2, which is opposite to the carrier layer 1 (namely, on the side surface of the three-dimensional texture layer, which is close to the injection molding part and needs to be finally bonded with the injection molding part); the veneer board a with the three-dimensional texture layer is obtained through the preparation;
(2) Then placing the facing sheet material a obtained in the step (1) in a mold (mold for injection molding), and coating an adhesive on the side of the facing sheet material adjacent to the injection molded article on the side to be injection molded to form an adhesive layer 5 to improve the bonding firmness between the facing sheet material and the injection molded material, and then injecting a molten plastic material into the mold for heating injection molding to obtain an injection molded article having the facing sheet material (the injection molded structure formed by injection molded particles for adhesion with the facing sheet material in the injection molded article may be referred to as an injection molded layer 6);
(3) The injection-molded article was taken out of the mold, and the carrier layer 1 was peeled off from the three-dimensional texture layer 2 adhered to the injection-molded article to obtain an injection-molded article having a three-dimensional texture layer without the carrier layer 1, and the injection-molded article was obtained in this example as shown in fig. 4.
In a specific injection molding process, the temperature of the molten injection molding material is between 100 and 150 ℃, the high-temperature resistant temperature range of the three-dimensional texture layer is matched with the molten injection molding material, the texture display effect of the three-dimensional texture layer cannot be affected due to high temperature in the injection molding process, and the high-temperature resistant performance of the three-dimensional texture layer can be improved by increasing the number of layers of the coloring layer and/or the electroplated layer; the three-dimensional texture layer is formed by combining commercially available high-temperature-resistant UV glue with a carrier layer in a transfer printing or coating mode.
Example 2
(1) Firstly, taking a carrier layer (PET, PC, PMMA, PS, ABS, APETG, PETG, PP or a sheet made of organic materials such as PVC (polyvinyl chloride) and the like, wherein the sheet can be in a transparent or semitransparent state), as shown in fig. 5-8, the carrier layer 1 is provided with a first surface 101 and a second surface 102 which are oppositely arranged along the thickness direction, a first three-dimensional texture layer 201 and a second three-dimensional texture layer 202 are attached on the first surface of the carrier layer 1, the first three-dimensional texture layer 201 is directly attached to the first surface of the carrier layer 1, and the second three-dimensional texture layer is attached to the outer side surface of the first three-dimensional texture layer 201 (namely, the surface of the opposite side of the first three-dimensional texture layer, which is contacted with the carrier layer); the first three-dimensional texture layer 201 contains a stripping agent (here, "the first three-dimensional texture layer 201 contains the stripping agent" can be added in the preparation of the three-dimensional texture layer resin material, such as fatty acid vinegar, fatty acid metal salt, organic silicon resin and the like, as an internal stripping agent, or spray stripping agent can be used to spray-coat an external stripping agent, such as an organic silicon stripping agent and the like, on the side of the first three-dimensional texture layer near the carrier layer or on the side of the carrier layer); then attaching an electroplated layer 4 on the outer side surface of the second three-dimensional texture layer 202, which is opposite to the first three-dimensional texture layer 201; the veneer board a with the three-dimensional texture layer is obtained through the preparation;
(2) Then placing the facing plate material a obtained in the step (1) in a mold (mold for injection molding), and coating an adhesive on the side surface of the facing plate material adjacent to the injection molding product on the side to be injection molded to form an adhesive layer 5 so as to improve the bonding firmness between the facing plate material and the injection molding material, and then injecting plastic particles into the mold for heating injection molding to obtain the injection molding product with the facing plate material;
(3) The injection-molded article was taken out of the mold, and the carrier layer 1 and the first three-dimensional texture layer 201 were peeled off from the second three-dimensional texture layer 202 as a whole to obtain an injection-molded article having a second three-dimensional texture layer without the carrier layer 1 and the first three-dimensional texture layer 201, and the specific article shown in fig. 8 is the injection-molded article obtained in this example.
According to the preparation process, compared with a single-layer three-dimensional texture layer, the two-layer three-dimensional texture layer is adopted, the stripping agent can be independently arranged in the first three-dimensional texture layer, and when the stripping agent is stripped from an injection molding product, the bonding between the second three-dimensional texture layer (without the stripping agent) and the injection molding product can be ensured to be firmer; the thicknesses of the two layers of texture layers are thin, the mutual influence of the stripping process is small, and the stripping of the direct carrier layer and the three-dimensional texture layer in the embodiment 1 is easy to damage the three-dimensional texture layer because the carrier layer is directly contacted with the three-dimensional texture layer and the other side of the three-dimensional texture layer is adhered with the injection molding layer, and the three-dimensional texture layer is relatively torn by the carrier layer and the two sides of the injection molding layer in the carrier layer stripping process.
Example 3
(1) Firstly, taking a carrier layer (PET, PC, PMMA, PS, ABS, APETG, PETG, PP or a sheet made of organic materials such as PVC (polyvinyl chloride) and the like, wherein the sheet can be in a transparent or semitransparent state), as shown in fig. 5-8, the carrier layer 1 is provided with a first surface 101 and a second surface 102 which are oppositely arranged along the thickness direction, a first three-dimensional texture layer 201 and a second three-dimensional texture layer 202 are attached on the first surface of the carrier layer 1, the first three-dimensional texture layer 201 is directly attached to the first surface of the carrier layer 1, and the second three-dimensional texture layer is attached to the outer side surface of the first three-dimensional texture layer 201 (namely, the surface of the opposite side of the first three-dimensional texture layer, which is contacted with the carrier layer); the first three-dimensional texture layer 201 contains a stripping agent (here, "the first three-dimensional texture layer 201 contains the stripping agent" can be added in the preparation of the three-dimensional texture layer resin material, such as fatty acid vinegar, fatty acid metal salt, organic silicon resin and the like, as an internal stripping agent, or spray stripping agent can be used to spray-coat an external stripping agent, such as an organic silicon stripping agent and the like, on the side of the first three-dimensional texture layer near the carrier layer or on the side of the carrier layer); then, attaching a coloring layer 3 and a plating layer 4 (the coloring layer is a transparent coloring layer and can penetrate through the base color of the plating layer) on the outer side surface of the second three-dimensional texture layer 202 opposite to the first three-dimensional texture layer 201; the veneer board a with the three-dimensional texture layer is obtained through the preparation;
(2) Then placing the facing plate material a obtained in the step (1) in a mold (mold for injection molding), and coating an adhesive on the side surface of the facing plate material adjacent to the injection molding product on the side to be injection molded to form an adhesive layer 5 so as to improve the bonding firmness between the facing plate material and the injection molding material, and then injecting plastic particles into the mold for heating injection molding to obtain the injection molding product with the facing plate material;
(3) Taking out the injection molding from the mold, and peeling the whole carrier layer 1 and the first three-dimensional texture layer 201 from the second three-dimensional texture layer 202 to obtain an injection molding with the second three-dimensional texture layer without the carrier layer 1 and the first three-dimensional texture layer 201, wherein the specific injection molding is shown in fig. 11, and the injection molding is obtained in the embodiment; the coloring layer and the electroplated layer of the injection molding part are adopted, so that the stereoscopic texture layer can be effectively protected from being influenced in the injection molding process.
According to the preparation process, compared with a single-layer three-dimensional texture layer, the two-layer three-dimensional texture layer is adopted, the stripping agent can be independently arranged in the first three-dimensional texture layer, and when the stripping agent is stripped from an injection molding product, the bonding between the second three-dimensional texture layer (without the stripping agent) and the injection molding product can be ensured to be firmer; the thicknesses of the two layers of texture layers are thin, the mutual influence of the stripping process is small, and the stripping of the direct carrier layer and the three-dimensional texture layer in the embodiment 1 is easy to damage the three-dimensional texture layer because the carrier layer is directly contacted with the three-dimensional texture layer and the other side of the three-dimensional texture layer is adhered with the injection molding layer, and the three-dimensional texture layer is relatively torn by the carrier layer and the two sides of the injection molding layer in the carrier layer stripping process.
In addition, the embodiment of the application adopts the mode that dyed layer and electroplated coating set up simultaneously, can give the color demonstration that three-dimensional texture veneer is richer, and the dyed layer gives the colour, the electroplated coating gives the ground color and can also effectively protect facing panel.
The facing board of this application is produced in the outside earlier (namely bonds the complex through ultraviolet curing etc. mode and carrier layer between), then with mould plastics between the layer and bond and constitute complete injection molding, consequently UV three-dimensional texture need not at the inside preparation of bonding of mould, receive the influence of moulding plastics environment little, three-dimensional texture bandwagon effect that can be located well.
Example 4
(1) Firstly, taking a carrier layer (PET, PC, PMMA, PS, ABS, APETG, PETG, PP or a sheet made of organic materials such as PVC (polyvinyl chloride) and the like, wherein the sheet can be in a transparent or semitransparent state), as shown in figures 12-15, the carrier layer 1 is provided with a first surface 101 and a second surface 102 which are oppositely arranged along the thickness direction, a first three-dimensional texture layer 201 and a second three-dimensional texture layer 202 are attached on the first surface of the carrier layer 1, the first three-dimensional texture layer 201 is directly attached to the first surface of the carrier layer 1, and the second three-dimensional texture layer is attached to the outer side surface of the first three-dimensional texture layer 201 (namely, the surface of the opposite side of the first three-dimensional texture layer, which is contacted with the carrier layer); the first three-dimensional texture layer 201 contains a stripping agent (here, "the first three-dimensional texture layer 201 contains the stripping agent" can be added in the preparation of the three-dimensional texture layer resin material, such as fatty acid vinegar, fatty acid metal salt, organic silicon resin and the like, as an internal stripping agent, or spray stripping agent can be used to spray-coat an external stripping agent, such as an organic silicon stripping agent and the like, on the side of the first three-dimensional texture layer near the carrier layer or on the side of the carrier layer); then attaching an electroplated layer 4 on the outer side surface of the second three-dimensional texture layer 202, which is opposite to the first three-dimensional texture layer 201; the veneer board a with the three-dimensional texture layer is obtained through the preparation;
the first three-dimensional texture layer is a UV three-dimensional texture layer, the second three-dimensional texture layer is a coating three-dimensional texture layer, and the three-dimensional texture layers of the two layers are made of different materials, so that adhesion between the two layers can be avoided, and separation is more convenient during separation; the three-dimensional texture side of the first three-dimensional texture layer is close to the second three-dimensional texture layer, the second three-dimensional texture layer is coated and filled on the outer surface of the first three-dimensional texture layer, three-dimensional textures of the first three-dimensional texture layer and the second three-dimensional texture layer form a complementary structure, and the three-dimensional textures of the first three-dimensional texture layer and the second three-dimensional texture layer are shown in a protruding mode of the three-dimensional texture surface of the first three-dimensional texture layer, so that the corresponding three-dimensional texture surface of the second three-dimensional texture layer and the three-dimensional texture of the first three-dimensional texture layer protrude to form a complementary concave film three-dimensional texture; the complementary three-dimensional texture structure formed by the two;
(2) Then placing the facing plate material a obtained in the step (1) in a mold (mold for injection molding), and coating an adhesive on the side surface of the facing plate material adjacent to the injection molding product on the side to be injection molded to form an adhesive layer 5 so as to improve the bonding firmness between the facing plate material and the injection molding material, and then injecting plastic particles into the mold for heating injection molding to obtain the injection molding product with the facing plate material;
(3) The injection molded article was taken out of the mold, the carrier layer 1 and the first three-dimensional texture layer 201 were peeled off from the second three-dimensional texture layer 202 as a whole (since the composition properties of the coating glue of the first three-dimensional texture layer and the coating glue of the second three-dimensional texture layer were different, and the thickness of the coating glue was very thin, and was 1 mm or less, the coating glue was not adhered to each other, the separation process was more thoroughly separated, and the influence on the three-dimensional texture on the side of the injection molded article was not caused), and an injection molded article having the second three-dimensional texture layer 202 without the carrier layer 1 and the first three-dimensional texture layer 201 was obtained, and the specific article shown in fig. 15 was an injection molded article obtained in this example, which had the second three-dimensional texture layer as the finish layer.
According to the preparation process, compared with a single-layer three-dimensional texture layer, the two-layer three-dimensional texture layer is adopted, the stripping agent can be independently arranged in the first three-dimensional texture layer, and when the stripping agent is stripped from an injection molding product, the bonding between the second three-dimensional texture layer (without the stripping agent) and the injection molding product can be ensured to be firmer; the thicknesses of the two layers of texture layers are thin, the mutual influence of the stripping process is small, and the stripping of the direct carrier layer and the three-dimensional texture layer in the embodiment 1 is easy to damage the three-dimensional texture layer because the carrier layer is directly contacted with the three-dimensional texture layer and the other side of the three-dimensional texture layer is adhered with the injection molding layer, and the three-dimensional texture layer is relatively torn by the carrier layer and the two sides of the injection molding layer in the carrier layer stripping process.
In the above embodiments of the present application, when two three-dimensional texture layers are used, the stripping agent may be disposed in the two three-dimensional texture layers or in any one layer or between the two layers; the material of the three-dimensional texture layer on two sides of the material is two different three-dimensional texture materials which are not bonded at all, so that the two three-dimensional texture materials are easier in the complete injection stripping process, and the three-dimensional texture attached to the side of the injection layer is not damaged.
The coloring layer and the electroplated layer can be realized by spraying, electroplating, coating or nano printing, ink printing or screen printing and the like, and can also be obtained by nano coating treatment; the coloring layer can be obtained by a metal nano coating process which is conventional in the industry, the electroplated layer can be obtained by an electroplating process which is conventional in the industry, and the colors of the coloring layer and the electroplated layer can be set according to the needs of specific products; the mould that this application used for the injection molding is the conventional mould of injection molding trade, and the molding of specific mould is in order to satisfy and prepare the injection molding of this application can.
The UV three-dimensional texture layer can be prepared by firstly preparing needed pictures and texts or characters in a computer, realizing angle adjustment among lines by rotating the lines forming three-dimensional textures in the computer, so that ideal line angles and texture effects of the three-dimensional texture effects are obtained, and then preparing the texture layer by adopting a 3D multi-channel process; the UV three-dimensional texture layer can be specifically prepared by a mold, and the specific mold can be prepared by referring to a preparation method of a CN109465992A multichannel 3D nano texture mold or a nano texture mold disclosed in 201910529441.3; the method comprises the following steps: transferring the texture pattern manufactured by a computer onto a die, transferring the texture pattern on the die onto transfer glue (namely a resin material and a resin material for forming a three-dimensional texture layer), bonding and laminating the transfer glue and a carrier layer, forming a three-dimensional texture layer with UV texture on one surface of the carrier layer, wherein the transfer glue can be UV-cured UV transfer glue, so that the transfer glue with UV texture and a layer structure attached to the transfer glue can be tightly connected into a whole through ultraviolet irradiation, and the transfer glue can be semitransparent or transparent and is convenient for the presentation of the three-dimensional texture or the presentation of a coloring layer and an electroplated layer; forming a first three-dimensional texture layer, and coating a three-dimensional texture layer material of another material on the first three-dimensional UV texture layer to form a complementary three-dimensional texture layer between the three-dimensional texture layer and the first three-dimensional texture layer so as to obtain a second three-dimensional texture layer; the three-dimensional texture layer is microscopically a texture pattern formed by combining countless slender lines, and the three-dimensional sense effect formed by concave-convex degree is manufactured through a die.
The properties of the injection molded articles prepared in examples 1-4 above in this application are shown in Table 1 below:
table 1 properties of injection molded articles prepared in examples 1 to 3
According to the method, from the perspective that the combination of the carrier layer and the injection molding layer can cause deformation, detachment or tilting of the three-dimensional texture, an injection molding product which does not contain the carrier layer and has the three-dimensional texture facing effect is prepared through a specific process, so that the defects caused by the existing carrier layer are effectively overcome; the outermost side of the injection molding product is a three-dimensional texture layer prepared from a resin material, and the three-dimensional texture layer has high surface hardness, is wear-resistant, smooth in surface, has three-dimensional texture handfeel, and is not reflective and not dazzling; the ultraviolet curing shadowless glue is characterized in that a two-layer three-dimensional texture layer structure is adopted in the preparation process, one layer of ultraviolet curing three-dimensional texture layer (photosensitive resin, commonly called ultraviolet curing shadowless glue or ultraviolet curing resin (glue) is mainly composed of a polymer monomer and a prepolymer, wherein a photo (ultraviolet) initiator or a photosensitizer is added, polymerization reaction is immediately caused under irradiation of ultraviolet light (250-300 nm) with a certain wavelength to complete solid state conversion, wherein fatty acid vinegar, fatty acid metal salt, organic silicon resin and the like are added as internal stripping agents) and a carrier layer are solidified and bonded, one layer of coating three-dimensional texture layer (the UV resin can be also used, but the stripping agents are not contained) and an injection molding layer are bonded through an adhesive, and the two types of resin materials with different properties are adopted for the ultraviolet curing three-dimensional texture layer and the coating three-dimensional texture layer, so that the two types of resin materials are not mutually bonded, are more convenient and smooth in the stripping process, and texture damage is not caused to the three-dimensional texture layer on the side of the injection molding layer; fig. 16 is a schematic illustration of a panel injection molding of a washing machine prepared by the process of embodiment 4 of the present application, wherein a stereoscopic texture layer on the injection molding is tightly bonded with an injection molding layer, and the two are highly adaptive, so that the two can be correspondingly bent and bonded along with the radian of the injection molding.
Claims (10)
1. A production method of an injection molding part is characterized by comprising the following steps: the method comprises the following steps:
(1) Firstly, taking a carrier layer, attaching a three-dimensional texture layer on one surface of the carrier layer, wherein the three-dimensional texture layer contains a stripping agent; then attaching a coloring layer or an electroplated layer or both the coloring layer and the electroplated layer on the outer side surface of the three-dimensional texture layer which is opposite to the carrier layer; the veneer board with the three-dimensional texture layer is obtained through the preparation;
(2) Then placing the facing plate obtained in the step (1) in a mold, coating an adhesive on the side surface of the facing plate adjacent to the injection molding product on the side to be injection molded, and then injecting an injection molding material into the mold for injection molding to obtain an injection molding product with the facing plate;
(3) And taking out the injection molding product from the mold, and stripping the carrier layer from the three-dimensional texture layer adhered to the injection molding product to obtain the injection molding product with the three-dimensional texture layer without the carrier layer.
2. The method of producing an injection molded article according to claim 1, characterized in that: the three-dimensional texture layer in the step (1) is at least provided with two layers, and at least one layer of the two three-dimensional texture layers contains a stripping agent.
3. The method of producing an injection molded article according to claim 2, characterized in that: the three-dimensional texture layer in the step (1) is provided with two layers, including a first three-dimensional texture layer and a second three-dimensional texture layer, at least one layer of the first three-dimensional texture layer and the second three-dimensional texture layer contains a stripping agent, the first three-dimensional texture layer is directly attached to the carrier layer, and the second three-dimensional texture layer is attached to the outer side face of the first three-dimensional texture layer.
4. A method of producing injection molded parts according to claim 3, characterized in that: the first three-dimensional texture layer is stripped along with the carrier layer and the injection molding piece, and the second three-dimensional texture layer is mutually adhered with the injection molding piece.
5. The method of producing an injection molded article according to claim 4, wherein: the first three-dimensional texture layer is a UV three-dimensional texture layer, and the second three-dimensional texture layer is a coating three-dimensional texture layer.
6. The method of producing an injection molded article according to claim 1, characterized in that: and (3) attaching a coloring layer or an electroplated layer on the outer side surface of the three-dimensional texture layer which is arranged opposite to the carrier layer in the step (1).
7. The method of producing an injection molded article according to claim 6, wherein: the colored layer and the electroplated layer are attached to the outer side surface of the three-dimensional texture layer which is arranged opposite to the carrier layer in the step (1), the colored layer and the three-dimensional texture layer are directly attached, and the electroplated layer is positioned on the outer side surface of the colored layer.
8. The method of producing an injection molded article according to claim 1, characterized in that: at least one three-dimensional texture layer is arranged on the injection molding piece after the carrier layer is stripped; the three-dimensional texture layer is obtained by hardening resin; the outer contour of the facing plate is matched with the contour of the outer facing of the injection molding piece.
9. The method of producing an injection molded article according to claim 1, characterized in that: the carrier layer is PET, PC, PMMA, PS, ABS, APETG, PETG, PP or a plate structure made of PVC materials.
10. An application of an injection molding piece, which is characterized in that: the injection molding part can be applied to the technical fields of automobiles, furniture, household appliances, mobile phone shells, 3C products and injection molding part exterior surfaces.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202211487349.3A CN116001187A (en) | 2022-11-24 | 2022-11-24 | Production method and application of injection molding piece |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211487349.3A CN116001187A (en) | 2022-11-24 | 2022-11-24 | Production method and application of injection molding piece |
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| CN116001187A true CN116001187A (en) | 2023-04-25 |
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| CN202211487349.3A Pending CN116001187A (en) | 2022-11-24 | 2022-11-24 | Production method and application of injection molding piece |
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