Precious metal visual embossment product structure with embroidery texture effect

Abstract

The invention provides a precious metal visual embossment product structure with an embroidery texture effect. The precious metal visual embossment product structure comprises a bearing substrate, a precious metal reflecting layer on the bearing substrate, an information layer, a packaging layer covering the information layer, and a cylindrical lens layer which is attached to the outer side of the packaging layer and forms an attaching interface. The information layer is provided with a striped information area, the cylindrical lens layer is provided with a cylindrical lens extending in the axial direction, and the axial direction of the cylindrical lens is parallel to the extending direction of a strip. An edge sealing ring is integrally formed on the periphery of the packaging layer, a spigot step opening is formed in the edge sealing ring to support and limit the edge portion of the cylindrical lens layer in the radial direction, and circumferential positioning is achieved through embedded matching of the first positioning portion and the second positioning portion. The inner side of the edge sealing ring is provided with a glue guide groove communicated with the attaching interface and an exhaust channel communicated with the glue guide groove, and the glue guide groove and the exhaust channel are used for supplying glue and exhausting air, so that the direction registration stability and the attaching reliability are improved.

Description

Technical Field

[0001] This invention relates to the field of microstructure optical display and anti-counterfeiting decoration technology, and in particular to a structure for a precious metal visual relief product with an embroidery texture effect. Background Technology

[0002] Precious metal visual relief products, variable image or three-dimensional decorative products and other angle-variable display products. These products utilize the differences in light path caused by changes in the viewing angle to make the same plane present different graphic information, brightness and darkness or spatial depth effects from different viewing angles, thereby meeting the application needs of decorative display, brand packaging, anti-counterfeiting label and cultural and creative derivatives.

[0003] In existing technologies, angle-variable displays are generally achieved through a combination of an information-carrying layer and an optical sampling layer: the information-carrying layer is used to record multi-view graphics, parallax maps, or multiplexed coded patterns, and is usually formed on a paper, film, or sheet carrier by means of printing, coating, imaging, or transfer; the optical sampling layer is usually made of a transparent material sheet with a microstructure morphology, and is obtained through processes such as replication, imprinting, injection molding, or coating and curing; the two layers are often stacked by lamination, hot pressing, or coating and curing, and are assembled by alignment marks, positioning fixtures, or equipment.

[0004] Based on the above structure and manufacturing path, the existing technology still generally has the following problems: First, the display effect is sensitive to the relative orientation and planar position deviation of the two layers. Assembly offset, rotation error and material thermal shrinkage / curing shrinkage can easily cause ghosting, crosstalk, moiré patterns or unclear switching, resulting in a decrease in batch consistency. Second, the thickness and spreading uniformity of the medium layer are difficult to control stably during the lamination process, which can easily lead to local poor bonding, warping or edge lifting. Third, large-area interfaces are prone to trapping air or forming micro-voids during pressing or curing, resulting in appearance defects such as bubbles, white fog, and scattering points, which further affect long-term reliability and yield under temperature and humidity cycling and friction wear conditions.

[0005] In addition, in precious metal decorative display applications, the industry also hopes to make the surface of the product appear similar to the texture of overlapping threads or embroidery without introducing real embroidery techniques. However, such appearance is more sensitive to the orientation registration of information encoding and optical resolution, the uniformity of bonding, and the control of interface defects. Summary of the Invention

[0006] In view of this, it is necessary to provide a structure for a precious metal visual relief product with an embroidery texture effect to solve the above problems.

[0007] Embodiments of this application provide a structure for a precious metal visual relief product with an embroidery texture effect, comprising: A substrate, a precious metal reflective layer disposed thereon, an information layer disposed on the precious metal reflective layer, an encapsulation layer covering the information layer, and a cylindrical lens layer attached to the outside of the encapsulation layer and forming an interface therewith. The information layer has striped information areas and defines the direction of strip extension; The cylindrical lens layer has cylindrical lenses extending along an axial direction, the axial direction being parallel to the extension direction of the strip; The encapsulation layer has an integrally formed sealing ring on the outer circumference. The sealing ring forms a stop step around the bonding interface. The stop step has a supporting surface and a radial limiting surface. The edge of the cylindrical lens layer is located inside the stop step and contacts the supporting surface and is limited by the radial limiting surface. A first positioning part is provided at a circumferential interval of the stop step opening, and a second positioning part is provided at a circumferential corresponding position of the edge of the cylindrical lens layer. When the cylindrical lens layer is seated on the stop step opening, the first positioning part and the second positioning part are fitted and engaged with each other for positioning. The sealing ring forms an adhesive guide groove on the inner side of the stop step opening. The adhesive guide groove is continuous in the circumferential direction and distributed around the outer periphery of the bonding interface and communicates with the bonding interface. An exhaust channel is formed inside the sealing ring, and the exhaust channel is connected to the adhesive guide groove.

[0008] In at least one embodiment of this application, the striped information area includes a first strip and a second strip, wherein the first strip and the second strip extend continuously along the strip extension direction and are alternately distributed in a direction perpendicular to the strip extension direction.

[0009] In at least one embodiment of this application, the first positioning part is a positioning protrusion formed at the stop step opening, and the second positioning part is a mating recess formed at the edge of the cylindrical lens layer. When the cylindrical lens layer is seated at the stop step opening, the positioning protrusion is embedded in the mating recess to achieve circumferential positioning.

[0010] In at least one embodiment of this application, the adhesive guide groove and the stop step opening are integrally formed by the sealing ring, and the adhesive guide groove is located inside the stop step opening and is arranged around the stop step opening.

[0011] In at least one embodiment of this application, the adhesive guide groove is a stepped groove in radial cross section, including a first groove segment, a second groove segment, and a transition groove segment connecting the first groove segment and the second groove segment; The first groove extends circumferentially along the sealing ring, and the second groove connects to the first groove via the transition groove and connects to the bonding interface at one end near the bonding interface.

[0012] In at least one embodiment of this application, one end of the exhaust channel opens into the guide groove to form an air inlet, and the other end opens into the outer periphery of the sealing ring to form an outer peripheral opening to the outside.

[0013] In at least one embodiment of this application, the exhaust channel is a single channel that communicates with the adhesive guide groove and extends to the outer peripheral opening.

[0014] In at least one embodiment of this application, the exhaust passage forms a throttling structure near the outer peripheral opening. The throttling structure is a broken line segment or a labyrinth segment disposed in the exhaust passage, and the broken line segment or labyrinth segment forms at least one bend near the outer peripheral opening to increase the flow resistance of gas discharged through the exhaust passage.

[0015] In at least one embodiment of this application, the information layer further includes a non-information edge region surrounding the striped information area; The cylindrical lens layer includes an effective cylindrical lens area and a peripheral clearance area surrounding the effective cylindrical lens area, wherein the peripheral clearance area is a cylindrical lens-free plane area; The effective area of ​​the cylindrical lens corresponds to the striped information area in the orthographic projection of the direction perpendicular to the bonding interface, and the peripheral clearance area corresponds to the non-information edge area in the orthographic projection of the direction perpendicular to the bonding interface.

[0016] In at least one embodiment of this application, the peripheral clearance area is located within the stop step opening and is disposed opposite to the supporting surface in a direction perpendicular to the mating interface; The adhesive guide groove is located on the outer periphery of the peripheral clearance area in the orthographic projection of the direction perpendicular to the bonding interface, and the adhesive guide groove is located on the inner side of the stop step opening.

[0017] Implementing a precious metal visual relief structure with an embroidery texture effect according to this embodiment will have at least the following beneficial effects: The aforementioned structure for a precious metal visual relief product with an embroidery texture effect utilizes an integrally formed edge-sealing ring on the outer circumference of the encapsulation layer. A stop step and interlocking first and second positioning parts are constructed on this ring, allowing the cylindrical lens layer to simultaneously receive axial support, radial limitation, and circumferential angle locking upon placement. This ensures a stable relative relationship between the cylindrical lens axis and the strip extension direction, facilitating the stable presentation of a line or weave-like embroidery texture effect in the striped information area under the resolution of the cylindrical lens layer. It also significantly reduces ghosting or crosstalk caused by assembly eccentricity and rotational misalignment. Simultaneously, a continuous circumferential adhesive guide groove connected to the bonding interface and an exhaust channel are provided within the edge-sealing ring, allowing for uniform circumferential distribution of adhesive and organized exhaust of interface gas. This reduces adhesive shortages, strip breaks, and localized non-bonding caused by air trapping, improving bonding consistency, sealing reliability, and finished product yield. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] in: Figure 1 This is a schematic diagram of the structure of a precious metal visual relief product with an embroidery texture effect in one embodiment. Figure 2 This is a schematic diagram of the information layer structure of a precious metal visual relief product with an embroidery texture effect in one embodiment. Figure 3 In one embodiment Figure 1 Schematic diagram at point A in the middle; Figure 4 In one embodiment Figure 1 Schematic diagram at point B in the middle; Figure 5 In one embodiment Figure 1 Schematic diagram at point C; Figure 6 In one embodiment Figure 1 Schematic diagram at point D; Figure 7 In one embodiment Figure 6 Schematic diagram at point d.

[0020] Explanation of key component symbols: 100. A structure for a precious metal visual relief product with an embroidery texture effect; 10. Supporting substrate; 20. Precious metal reflective layer; 30. Information layer; 31. Striped information area; 311. First strip; 312. Second strip; 32. Non-information edge area; 40. Encapsulation layer; 401. Edge sealing ring; 41. Bonding interface; 42. Stop step opening; 420. First positioning part; 420a. Positioning protrusion; 421. Supporting surface; 422. Radial limiting surface; 43. Adhesive guide groove; 431. First groove segment; 432. Second groove segment; 433. Transition groove segment; 44. Exhaust channel; 441. Outer peripheral opening; 50. Lens layer; 51. Lens; 52. Edge of lens layer; 521. Second positioning part; 521a. Mating recess; 53. Effective area of ​​lens; 54. Peripheral clearance area. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] Please see Figures 1-7 The embodiments of this application provide a precious metal visual relief product structure 100 with embroidery texture effect. The structure includes, from bottom to top along the thickness direction, a carrier substrate 10, a precious metal reflective layer 20 disposed on the carrier substrate 10, an information layer 30 disposed on the precious metal reflective layer 20, an encapsulation layer 40 covering the information layer 30, and a lenticular lens layer 50 attached to the outside of the encapsulation layer 40 and forming an interface 41 with the encapsulation layer 40.

[0023] Specifically, the carrier substrate 10 provides a reference support surface for the upper structure, enabling the noble metal reflective layer 20, the information layer 30, and the encapsulation layer 40 to be stacked on the same reference. The noble metal reflective layer 20 is disposed on the carrier substrate 10 and provides a reflective background at the information layer 30, forming a stable optical reflective interface, thereby giving the striped information area 31 in the information layer 30 a recognizable contrast base when observed. The noble metal reflective layer may be a reflective layer formed of gold, silver, or their alloy.

[0024] Furthermore, the information layer 30 is disposed on the noble metal reflective layer 20 and includes a striped information region 31. The striped information region 31 provides a directional reference through its strip extension direction, so that the information layer 30 has a coding carrier shape that can be resolved by the cylindrical lens layer 50 according to the direction. The striped information region 31 extends continuously along the strip extension direction, so that it presents an approximately one-dimensional strip structure in this direction, while in the direction perpendicular to the strip extension direction, it is manifested as a transverse distribution of strips, thereby providing conditions for the subsequent refraction sampling of the cylindrical lens 51 in the transverse direction.

[0025] In this embodiment, the striped information area 31 can be regarded as a visual barcode layer for generating the appearance of stitches or textures. Its strip sequence and texture units are used to form the embroidery texture effect under the resolution of the lenticular lens layer 50. The embroidery texture effect is a visual presentation effect, which is formed by the striped information area of ​​the information layer and the resolution of the lenticular lens layer. It is not limited to the use of actual embroidery techniques or thread sewing methods.

[0026] In one specific embodiment, an X-direction is marked in the spreading plane of the substrate 10. The X-direction is used to indicate the strip extension direction of the striped information area 31. Each strip in the striped information area 31 extends continuously along the X-direction. The cylindrical lens 51 on the cylindrical lens layer 50 extends continuously along the axial direction, and the axial direction of the cylindrical lens 51 is aligned with the X-direction, so that the axial direction of the cylindrical lens 51 is parallel to the strip extension direction of the striped information area 31, thereby establishing a structural correspondence between the strip direction reference and the cylindrical lens axial reference.

[0027] It should be noted that the reason why the cylindrical lens layer 50 must be set and oriented in conjunction with the striped information area 31 is that when the cylindrical lens 51 extends along its axis, its main refraction occurs in the lateral direction perpendicular to its axis, so that the observed light, after passing through the cylindrical lens 51, corresponds to different lateral position segments of the striped information area 31 at the bonding interface 41; when the observation angle changes, the effective light entering the human eye is shifted laterally, thus corresponding to different lateral strip segments of the striped information area 31, thereby realizing the separate presentation of striped information under different viewing angles. Based on this principle, the axis of the cylindrical lens 51 is set to be parallel to the strip extension direction of the striped information area 31, so that the refraction sampling direction of the cylindrical lens 51 matches the lateral distribution direction of the striped information area 31, avoiding strip superposition and resolution instability caused by axial mismatch. If the cylindrical lens layer 50 is missing, the lateral distribution information of the striped information area 31 cannot be sampled directionally during observation, and the strip information is easy to enter the field of view in a superimposed form, making it difficult to form a stable viewing angle separation display. Therefore, the cylindrical lens layer 50 is used in this structure to complete the resolution presentation of the striped information area 31.

[0028] Furthermore, the encapsulation layer 40 covers the information layer 30, serving two purposes: firstly, to encapsulate and protect the information layer 30, and secondly, to provide a controllable bonding substrate for the lens layer 50 and form a bonding interface 41. To ensure that the lens layer 50 can be seated in a defined assembly posture at the bonding interface 41 and maintain a stable relative position, an edge sealing ring 401 is integrally formed on the outer circumference of the encapsulation layer 40. The edge sealing ring 401 forms a stop step opening 42 around the bonding interface 41. The stop step opening 42 has a support surface 421 and a radial limiting surface 422. The edge portion 52 of the lens layer 50 is located within the stop step opening 42 and contacts the support surface 421, so that the seating height of the lens layer 50 in the thickness direction is determined by the support surface 421. At the same time, the edge portion 52 of the lens layer 50 is constrained by the radial limiting surface 422, thus limiting the radial position of the lens layer 50 in the plane. This forms a guide path for seating first and then bonding during assembly.

[0029] In one specific embodiment, in order to establish a defined alignment reference in the circumferential direction and suppress the circumferential rotation of the cylindrical lens layer 50 relative to the information layer 30, a first positioning part 420 is provided at a circumferentially spaced position of the stop step opening 42, and a second positioning part 521 is provided at a corresponding circumferential position of the edge portion 52 of the cylindrical lens layer 50. When the cylindrical lens layer 50 is seated on the stop step opening 42, the first positioning part 420 and the second positioning part 521 are fitted and engaged with each other for positioning, so that the axial direction of the cylindrical lens 51 can maintain a preset parallel relationship with the strip extension direction of the striped information area 31 during assembly, thereby solidifying the strip direction reference and the cylindrical lens axial reference at the structural level.

[0030] Furthermore, during the formation of the bonding interface 41, in order to ensure a controllable supply and expansion path for the adhesive in the circumferential direction, the sealing ring 401 forms an adhesive guide groove 43 inside the stop step opening 42. The adhesive guide groove 43 is continuous in the circumferential direction and distributed around the outer periphery of the bonding interface 41 and communicates with the bonding interface 41, so that the adhesive can be circumferentially distributed along the adhesive guide groove 43 and enter the bonding interface 41. At the same time, an exhaust channel 44 is formed inside the sealing ring 401 and communicates with the adhesive guide groove 43, so that the gas in the bonding interface 41 and the adhesive guide groove 43 during the bonding process can be discharged through the exhaust channel 44, thereby making it easier for the bonding interface 41 to form a continuous bonding state and reducing local air trapping.

[0031] In summary, the precious metal visual relief product structure 100 provides a directional coding reference through the striped information area 31, achieves directional resolution at the bonding interface 41 through the lenticular lens layer 50, and assembles and constrains the lenticular lens layer 50 through the supporting surface 421 of the stop step opening 42, the radial limiting surface 422, and the first positioning part 420 and the second positioning part 521. At the same time, the bonding process is organized and guided by the adhesive guide groove 43 and the exhaust channel 44. It can be applied to scenarios such as precious metal visual relief products that require viewing angle separation display, anti-counterfeiting marks, or display pieces with angle change display effects; for example, it can form surface visual relief texture units for decorative pieces such as tabletops, nameplates / labels, commemorative medals, and gold and silver bar display products.

[0032] In one specific embodiment, the striped information area 31 in the information layer 30 is composed of a first strip 311 and a second strip 312. The first strip 311 and the second strip 312 extend continuously along the strip extension direction, so that the striped information area 31 forms a continuous and consistent strip reference in the strip extension direction. At the same time, the first strip 311 and the second strip 312 are arranged alternately in the transverse direction perpendicular to the strip extension direction, thereby forming a sequence of first strip 311 segments and second strip 312 segments that repeat in the transverse direction on the information layer 30.

[0033] Furthermore, after the cylindrical lens layer 50 is attached to the outside of the encapsulation layer 40 and forms an attachment interface 41, the cylindrical lens 51 on the cylindrical lens layer 50 extends axially and its axial direction is parallel to the strip extension direction, so that the cylindrical lens 51 forms directional sampling of the striped information area 31 below in the lateral direction. The directional sampling is manifested by the cylindrical curvature of the cylindrical lens 51 in the lateral direction mapping the outgoing direction and defining the corresponding lateral sampling window. At a certain viewing angle, the effective light entering the human eye is refracted by the cylindrical lens 51 and mainly corresponds to a certain lateral sampling window of the striped information area 31. When the lateral sampling window falls on the lateral segment corresponding to the first strip 311, the field of view mainly presents the corresponding segment of the first strip 311. When the viewing angle changes, the lateral sampling window shifts laterally and crosses to the corresponding segment of the adjacent second strip 312, so the field of view mainly presents the corresponding segment of the second strip 312. Since the first strip 311 and the second strip 312 extend continuously along the strip extension direction, the above sampling and switching are mainly achieved by the segment sequence provided by the horizontal alternating arrangement, so that the striped information area 31 can form a stable segment correspondence between the first strip 311 and the second strip 312 under different observation angles.

[0034] It should be noted that the first strip 311 and the second strip 312 are simplified configurations of the striped information area 31. In other embodiments, the striped information area 31 can also be expanded to multiple strips arranged alternately in the horizontal direction or in a periodic sequence. As long as each strip extends continuously along the strip extension direction and forms a strip segment sequence that can be sampled by the cylindrical lens 51 in the horizontal direction, and the array pitch of the cylindrical lens 51 is set to correspond to the horizontal period of the strip segment sequence, corresponding sampling and switching presentation of different strip segments can be achieved at different observation angles.

[0035] In one specific embodiment, the encapsulation layer 40 covers the information layer 30. The outer circumference of the encapsulation layer 40 is integrally formed with a sealing ring 401, and the sealing ring 401 forms a stop step opening 42 around the bonding interface 41. The stop step opening 42 is jointly defined by a support surface 421 and a radial limiting surface 422. The support surface 421 is used to support the edge portion 52 of the lens layer 50 to limit the seating height of the lens layer 50, and the radial limiting surface 422 is used to laterally constrain the edge portion 52 of the lens layer 50 to limit the radial positioning of the lens layer 50.

[0036] Furthermore, a first positioning portion 420 is formed at a circumferential interval position of the stop step opening 42. The first positioning portion 420 is specifically a positioning protrusion 420a. The positioning protrusion 420a is preferably located at a local position of the radial limiting surface 422 and protrudes toward the receiving space of the stop step opening 42, so that the positioning protrusion 420a has a preset angle reference position in the circumferential direction. The positioning protrusion 420a can be formed in one step by the mold surface when the sealing ring 401 and the stop step opening 42 are formed in the encapsulation layer 40. The outer contour of the positioning protrusion 420a can adopt an arc transition or a sloped guide contour to form an assembly guide surface.

[0037] Specifically, the lenticular lens layer 50 is preferably an integral structure, comprising a transparent substrate layer and an array of lenticular lenses 51 formed on one side of the transparent substrate layer, the lenticular lenses 51 extending continuously along the axial direction; the other side of the lenticular lens layer 50 is a flat bonding surface for bonding with the encapsulation layer 40, and an edge portion 52 is formed on the outer periphery of the lenticular lens layer 50. Further, a second positioning portion 521 is formed at a corresponding position in the circumferential direction at the edge portion 52 of the lenticular lens layer 50. The second positioning portion 521 is specifically a mating recess 521a, which is disposed in the border area of ​​the transparent substrate layer and recessed inward to form a notch space, the recessed contour of the mating recess 521a matching the raised contour of the positioning protrusion 420a. The mating recess 521a can be formed in one step by a mold structure during the forming stage of the cylindrical lens layer 50, or formed on the edge portion 52 by punching, milling or laser processing after the cylindrical lens layer 50 is formed; the mating recess 521a is located in the outer frame area of ​​the cylindrical lens 51 array, so that it forms an effective working area that does not cut into the cylindrical lens 51.

[0038] During assembly, the lens layer 50 is aligned with the stop step opening 42 as a single unit and moves downward toward the encapsulation layer 40 along the thickness direction. After the edge portion 52 of the lens layer 50 enters the stop step opening 42, it forms a lateral abutment with the radial limiting surface 422 to complete the radial introduction. Subsequently, the lens layer 50 continues to move downward until the edge portion 52 contacts the supporting surface 421 to complete the height positioning. During the radial introduction and height positioning of the lens layer 50, when the circumferential angle of the lens layer 50 is consistent with the preset assembly angle, the positioning protrusion 420a and the mating recess 521a are aligned at the corresponding circumferential positions and form an embedded fit, so that the positioning protrusion 420a enters the recess space of the mating recess 521a, thereby locking the circumferential angle of the lens layer 50 relative to the encapsulation layer 40. After the lens layer 50 is seated, the flat mating surface of the lens layer 50 and the outer surface of the encapsulation layer 40 form a mating interface 41 to achieve the mating fit between the lens layer 50 and the encapsulation layer 40.

[0039] It should be noted that the positioning protrusion 420a and the mating recess 521a are both located in the frame mating area formed by the stop step opening 42 and the edge portion 52 of the lens layer 50. Their fitting and positioning are completed during the process of the lens layer 50 being seated. The central area of ​​the mating interface 41 is kept for the lens 51 to cover and resolve the information layer 30, and is not occupied or changed by the setting of the circumferential positioning structure.

[0040] In one specific embodiment, the encapsulation layer 40 is formed of a curable transparent resin or a thermoformable transparent polymer material, and the outer circumference of the encapsulation layer 40 is integrally formed with a sealing ring 401, which forms a stop step 42 around the bonding interface 41.

[0041] Furthermore, the adhesive guide groove 43 and the stop step opening 42 are integrally formed by the sealing ring 401. The adhesive guide groove 43 is located inside the stop step opening 42 and is continuously arranged around the stop step opening 42 in the circumferential direction. The adhesive guide groove 43 and the bonding interface 41 are connected through a connecting opening or a connecting seam.

[0042] It should be noted that the inner side here refers to the radial inner side, that is, the direction relative to the stop step opening 42 towards the bonding interface 41; in the radial direction, from the bonding interface 41 outwards are the cylindrical lens effective area 53, the peripheral clearance area 54, the adhesive guide groove 43 and the stop step opening 42.

[0043] Specifically, in the embodiment where the encapsulation layer 40 is formed by resin curing, the carrier substrate 10, the precious metal reflective layer 20 and the information layer 30 are stacked and placed on a flat carrier fixture. An annular forming mold is fitted around its outer periphery. The cavity of the forming mold corresponds to the shape of the sealing ring 401, the stop step 42 and the adhesive guide groove 43. Uncured resin is poured into or dotted into the cavity and cured before demolding. The sealing ring 401, the stop step 42 and the adhesive guide groove 43 are formed in one step around the outer periphery of the encapsulation layer 40. The guide groove 43, with its stepped structure in radial cross-section, is defined by the graded recesses of the mold cavity: the first recess of the cavity corresponds to the first groove segment 431, the second recess of the cavity corresponds to the second groove segment 432, and the connecting surface between the first and second recesses corresponds to the transition groove segment 433; the first groove segment 431 extends continuously along the circumference of the sealing ring 401, and the second groove segment 432 communicates with the first groove segment 431 via the transition groove segment 433. The connection opening or connecting seam is obtained by providing a through notch or forming a thin-walled gap inside the mold cavity, so that the second groove segment 432 communicates with the bonding interface 41 at one end near the bonding interface 41.

[0044] Furthermore, in embodiments where the encapsulation layer 40 is injection molded from a thermoplastic transparent sheet or a transparent frame, the sealing ring 401 of the encapsulation layer 40 is obtained by injection molding or hot pressing. The surface of the injection mold or embossing mold simultaneously includes the limiting surface of the stop step opening 42 and the limiting surface of the guide groove 43. The stepped cross section of the guide groove 43 is processed by two levels of grooves on the mold surface, wherein the outer level groove corresponds to the first groove segment 431, the inner level groove corresponds to the second groove segment 432, and the transition slope or arc surface between the two levels of grooves corresponds to the transition groove segment 433. Subsequently, a flat surface for bonding is formed in the inner region of the encapsulation layer 40 and bonded to the lenticular lens layer 50. The guide groove 43 is connected to the bonding interface 41 through the communication notch reserved on its inner side, forming the inlet of the second groove segment 432 to the bonding interface 41.

[0045] It should be noted that the geometric essence of the above-mentioned steps is that the same circumferential groove has two groove segments with different groove depths or different groove widths in the radial section, and they are connected by the transition groove segment 433. In terms of process implementation, the two groove segments are obtained by the two-level recess of the forming mold cavity at one time, or by the two-level groove of the injection / imprinting mold surface at one time. The guide groove 43 and the stop step opening 42 are both integrally formed by the sealing ring 401 rather than being subsequently glued and assembled.

[0046] In one specific embodiment, an edge sealing ring 401 is integrally formed on the outer periphery of the encapsulation layer 40. An exhaust channel 44 is formed within the edge sealing ring 401. The exhaust channel 44 extends along the thickness direction or circumferential direction of the edge sealing ring 401 and is arranged within the outer peripheral frame area where the adhesive guide groove 43 is located. One end of the exhaust channel 44 forms an opening in the side wall or bottom of the adhesive guide groove 43, which directly connects to the cavity of the adhesive guide groove 43 and serves as an air inlet. The other end of the exhaust channel 44 forms an outer peripheral opening 441 in the outer peripheral side wall or outer peripheral end face of the edge sealing ring 401. The outer peripheral opening 441 communicates with the channel cavity of the exhaust channel 44 and is connected to the outside.

[0047] Thus, a continuous connecting path is formed between the adhesive guide groove 43 and the outer peripheral opening 441 through the exhaust channel 44, and the opening position of the air inlet end and the groove cavity boundary of the adhesive guide groove 43 are defined by the solid surface of the sealing ring 401.

[0048] Specifically, in the embodiment where the sealing ring 401 and the adhesive guide groove 43 are integrally formed, the forming mold of the sealing ring 401 is provided with an annular groove cavity for the adhesive guide groove 43, and a through notch is reserved in a local position of the cavity as the forming position of the air inlet end of the exhaust channel 44; at the same time, a channel cavity for the exhaust channel 44 is provided on the outer periphery of the sealing ring 401, and one end of the channel cavity is connected to the through notch, and the other end extends to the outer periphery of the sealing ring 401 to form an outer peripheral opening 441. During forming, the exhaust channel 44 is defined by a slender core, insert, or removable core in the mold. After curing or cooling and demolding, the exhaust channel 44 is retained as a closed channel cavity inside the sealing ring 401, the air inlet end is exposed to the groove cavity of the adhesive guide groove 43 in an open form, and the outer peripheral opening 441 is exposed to the outer periphery of the sealing ring 401 in an open form.

[0049] Furthermore, the exhaust channel 44 is a single-channel structure, meaning that the exhaust channel 44 extends continuously along the channel axis from the air inlet to the outer peripheral opening 441 without branching or paralleling. The exhaust channel 44 can extend radially, circumferentially, or a combination of both within the sealing ring 401, but its channel cavity remains a continuous path from the guide groove 43 to the outer peripheral opening 441. During assembly, after the adhesive is placed into the guide groove 43, the gas in the guide groove 43 enters the exhaust channel 44 through the air inlet during the pressing of the cylindrical lens layer 50 and is discharged along this single channel to the outer peripheral opening 441.

[0050] Furthermore, the exhaust passage 44 forms a throttling structure near the outer peripheral opening 441. The throttling structure is configured as a broken line segment or a labyrinth segment of the exhaust passage 44. The broken line segment or labyrinth segment is located in the vicinity of the outer peripheral opening 441 and forms at least one bend in the passage path, causing the direction of the passage axis of the exhaust passage 44 to change in this region. The bend can be any one of an L-shaped bend, an S-shaped bend, or a Z-shaped bend, and the bend segment remains connected to the outer peripheral opening 441.

[0051] In another specific embodiment, the zigzag segment or labyrinth segment can be formed in one step by setting a zigzag path core on the mold core, or by setting the channel cavity near the outer peripheral opening 441 as a segmented continuous cavity connected by inter-segment turns, so that the exhaust channel 44 forms a continuous zigzag path near the outer peripheral opening 441; the outer peripheral opening 441 is correspondingly set at the end of the zigzag segment or labyrinth segment, so that the end of the channel is open to the outside at the outer peripheral opening 441 while the front section remains the channel cavity inside the sealing ring 401. It should be noted that the above-mentioned zigzag segment or labyrinth segment keeps the exhaust channel 44 as a single continuous channel, and the turns are formed by the geometric direction of the channel path, and the channel cavity is continuous and uninterrupted at the turns.

[0052] In one specific embodiment, the information layer 30 is disposed on the noble metal reflective layer 20. In addition to the striped information area 31, the information layer 30 also reserves a non-information edge area 32 around the outer periphery of the striped information area 31. The non-information edge area 32 is continuously disposed around the striped information area 31 in the circumferential direction and is adjacent to and connected to the striped information area 31 on the same level.

[0053] Specifically, the striped information area 31 is obtained through printing, exposure and development, metallization patterning or microstructure forming. The non-information edge area 32 is naturally preserved during the above patterning or microstructure forming by external masking, leaving blank frames, removing graphic areas or not performing microstructure replication, so that the information layer 30 forms a region division in the plane with "the center being the striped information area 31 and the outer perimeter being the non-information edge area 32", and the non-information edge area 32 forms a continuous border band in the circumferential direction.

[0054] Furthermore, the lenticular lens layer 50 is an integral sheet-like component, comprising an effective lenticular lens region 53 and a peripheral clearance region 54 surrounding the effective lenticular lens region 53. The peripheral clearance region 54 is a lenticular lens-free planar region. Specifically, the lenticular lens layer 50 includes a transparent substrate layer, and an array of lenticular lenses 51 is formed on one side surface of the transparent substrate layer. The lenticular lenses 51 extend continuously along the axial direction within the effective lenticular lens region 53. The peripheral clearance region 54 is located in the outer peripheral frame region of the effective lenticular lens region 53, and within this frame region, no lenticular lenses 51 are formed, maintaining a planar region opposite to the bonding interface 41.

[0055] In one specific embodiment, the peripheral clearance area 54 can be obtained in one step during the forming stage of the cylindrical lens layer 50. For example, the cylindrical lens microstructure surface is only set on the surface of the corresponding effective cylindrical lens area 53 on the injection mold or embossing mold, while the surface of the corresponding peripheral clearance area 54 is kept as a planar surface. Thus, in one replication process, a cylindrical lens 51 array is formed in the central region and a cylindrical lens-free plane is retained in the outer peripheral region; or after the cylindrical lens 51 array is formed, the outer peripheral frame area is flattened and the boundary is defined so that the outer peripheral frame area forms a cylindrical lens-free plane area as the peripheral clearance area 54.

[0056] Furthermore, after the cylindrical lens layer 50 is attached to the outside of the encapsulation layer 40 and forms an interface 41 with the encapsulation layer 40, in the direction perpendicular to the interface 41, the orthographic projection of the effective area 53 of the cylindrical lens corresponds to the striped information area 31, and the orthographic projection of the peripheral clearance area 54 corresponds to the non-information edge area 32.

[0057] Specifically, the boundary formed by the striped information area 31 and the non-information edge area 32 on the information layer 30 serves as the boundary alignment reference between the effective area 53 of the cylindrical lens and the peripheral clearance area 54 during assembly alignment. After the cylindrical lens layer 50 is seated and circumferential positioning is completed, the effective area 53 of the cylindrical lens covers the central area where the striped information area 31 is located, and the peripheral clearance area 54 covers the outer peripheral frame area where the non-information edge area 32 is located, thus forming a one-to-one corresponding area stacking relationship in the plane.

[0058] Furthermore, an edge sealing ring 401 is integrally formed around the outer circumference of the encapsulation layer 40. The edge sealing ring 401 forms a stop step opening 42 around the bonding interface 41. The stop step opening 42 has a support surface 421 and is used to accommodate the edge portion 52 of the cylindrical lens layer 50. A peripheral clearance area 54 is located within the stop step opening 42 and is disposed opposite to the support surface 421 in a direction perpendicular to the bonding interface 41.

[0059] Specifically, after the edge portion 52 of the cylindrical lens layer 50 enters the stop step opening 42, its lower surface contacts the support surface 421 to complete the seating. The peripheral clearance area 54 is located in the outer peripheral frame area of ​​the cylindrical lens layer 50 and is adjacent to the edge portion 52, so that the area supported by the support surface 421 in the thickness direction falls within the planar area of ​​the peripheral clearance area 54. The effective cylindrical lens area 53 is located radially inside the peripheral clearance area 54 and avoids the direct contact area of ​​the support surface 421. Thus, at the seating support position, a situation is formed in which "the peripheral clearance area 54 bears the support contact of the support surface 421, and the effective cylindrical lens area 53 is maintained as an area for the coverage and resolution of the cylindrical lens array 51".

[0060] Furthermore, the adhesive guide groove 43 is located inside the stop step opening 42, and on the orthographic projection in the direction perpendicular to the bonding interface 41, it is located on the outer periphery of the peripheral clearance area 54. Specifically, the adhesive guide groove 43 is integrally formed by the sealing ring 401 and continuously arranged circumferentially. Its planar position is outside the radial outer edge of the peripheral clearance area 54, while still within the radial inner boundary of the stop step opening 42, so that the adhesive guide groove 43 is located in the outer peripheral frame area between the peripheral clearance area 54 and the stop step opening 42 in the plane; the adhesive guide groove 43 is connected to the bonding interface 41 through a connecting port or connecting seam, and the adhesive can be placed into the adhesive guide groove 43 and enter the bonding interface 41 through the connecting port or connecting seam during the pressing process.

[0061] Thus, the outer peripheral frame area of ​​the cylindrical lens layer 50 is sequentially arranged in adjacent partitions on the plane, including the effective cylindrical lens area 53, the peripheral clearance area 54, the adhesive guide groove 43, and the stop step opening 42. The assembly position and the adhesive supply position are correspondingly set on the outer peripheral structure of the same edge sealing ring 401 by the sitting limiting shape of the stop step opening 42 and the adhesive supply passage of the adhesive guide groove 43.

[0062] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

Claims

1. A structure for a precious metal visual relief product with an embroidery texture effect, characterized in that, include: A substrate, a precious metal reflective layer disposed thereon, an information layer disposed on the precious metal reflective layer, an encapsulation layer covering the information layer, and a cylindrical lens layer attached to the outside of the encapsulation layer and forming an interface therewith. The information layer has striped information areas and defines the direction of strip extension; The cylindrical lens layer has cylindrical lenses extending along an axial direction, the axial direction being parallel to the extension direction of the strip; The encapsulation layer has an integrally formed sealing ring on the outer circumference. The sealing ring forms a stop step around the bonding interface. The stop step has a supporting surface and a radial limiting surface. The edge of the cylindrical lens layer is located inside the stop step and contacts the supporting surface and is limited by the radial limiting surface. A first positioning part is provided at a circumferential interval of the stop step opening, and a second positioning part is provided at a circumferential corresponding position of the edge of the cylindrical lens layer. When the cylindrical lens layer is seated on the stop step opening, the first positioning part and the second positioning part are fitted and engaged with each other for positioning. The sealing ring forms an adhesive guide groove on the inner side of the stop step opening. The adhesive guide groove is continuous in the circumferential direction and distributed around the outer periphery of the bonding interface and communicates with the bonding interface. An exhaust channel is formed inside the sealing ring, and the exhaust channel is connected to the adhesive guide groove.

2. The structure of a precious metal visual relief product with embroidery texture effect according to claim 1, characterized in that, The striped information area includes a first strip and a second strip, which extend continuously along the strip extension direction and are alternately distributed in a direction perpendicular to the strip extension direction.

3. The structure of a precious metal visual relief product with embroidery texture effect according to claim 1, characterized in that, The first positioning part is a positioning protrusion formed at the stop step opening, and the second positioning part is a mating recess formed at the edge of the cylindrical lens layer. When the cylindrical lens layer is seated at the stop step opening, the positioning protrusion is embedded in the mating recess to achieve circumferential positioning.

4. The structure of a precious metal visual relief product with embroidery texture effect according to claim 1, characterized in that, The adhesive guide groove and the stop step are integrally formed by the sealing ring, and the adhesive guide groove is located inside the stop step and is arranged around the stop step.

5. The structure of a precious metal visual relief product with embroidery texture effect according to claim 4, characterized in that, The adhesive guide groove has a stepped groove shape in radial cross section, including a first groove section, a second groove section, and a transition groove section connecting the first groove section and the second groove section; The first groove extends circumferentially along the sealing ring, and the second groove connects to the first groove via the transition groove and connects to the bonding interface at one end near the bonding interface.

6. The structure of a precious metal visual relief product with an embroidery texture effect according to claim 1, characterized in that, One end of the exhaust channel opens into the guide groove to form an air intake end, and the other end opens into the outer periphery of the sealing ring to form an outer peripheral opening to the outside.

7. The structure of a precious metal visual relief product with an embroidery texture effect according to claim 6, characterized in that, The exhaust channel is a single channel that communicates with the adhesive guide groove and extends to the outer peripheral opening.

8. The structure of a precious metal visual relief product with an embroidery texture effect according to claim 7, characterized in that, The exhaust passage forms a throttling structure near the outer peripheral opening. The throttling structure is a broken line segment or a labyrinth segment provided in the exhaust passage, and the broken line segment or labyrinth segment forms at least one bend near the outer peripheral opening to increase the flow resistance of the gas discharged through the exhaust passage.

9. The structure of a precious metal visual relief product with embroidery texture effect according to claim 1, characterized in that, The information layer also includes a non-information edge region surrounding the striped information area; The cylindrical lens layer includes an effective cylindrical lens area and a peripheral clearance area surrounding the effective cylindrical lens area, wherein the peripheral clearance area is a cylindrical lens-free plane area. The effective area of ​​the cylindrical lens corresponds to the striped information area in the orthographic projection of the direction perpendicular to the bonding interface, and the peripheral clearance area corresponds to the non-information edge area in the orthographic projection of the direction perpendicular to the bonding interface.

10. The structure of a precious metal visual relief product with an embroidery texture effect according to claim 9, characterized in that, The peripheral clearance area is located within the stop step opening and is positioned opposite the supporting surface in a direction perpendicular to the mating interface. The adhesive guide groove is located on the outer periphery of the peripheral clearance area in the orthographic projection of the direction perpendicular to the bonding interface, and the adhesive guide groove is located on the inner side of the stop step opening.

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