An acetate fiber sheet for making eyeglass frames, its manufacturing method, and its application in eyeglass frames.

Abstract

This invention relates to a cellulose acetate sheet for making eyeglass frames, its manufacturing method, and its application in eyeglass frames. The cellulose acetate sheet for making eyeglass frames is formed by heating and pressing a first cellulose acetate sheet and a second cellulose acetate sheet. The first and second cellulose acetate sheets are arranged side by side along a width direction. The second cellulose acetate sheet has 1 to 100 layers of cellulose acetate skin. In the width direction, the first and second cellulose acetate sheets are arranged alternately, and the thickness direction of the second cellulose acetate sheet is consistent with the width direction. The advantage of this invention is that the cellulose acetate sheet can simultaneously display the structure, color, or pattern of the plane and cross-section of cellulose acetate sheets produced by conventional methods on a single surface; and it will not bulge in the thickness direction to form bumps at adjacent positions, thus avoiding product defects and preserving the integrated structure and overall appearance.

Description

Technical Field

[0001] This invention relates to a cellulose acetate sheet for making eyeglass frames, a method for making the same, and the application of the same in eyeglass frames. Background Technology

[0002] There are several existing methods for manufacturing cellulose acetate sheets, including extrusion, dry pressing, wet pressing, and splicing. Among them, splicing is a combination of the first three production methods, which involves cutting cellulose acetate sheets made by different methods into layers of different thicknesses and then combining and pressing them together.

[0003] Existing splicing methods can only stack and assemble boards produced by different methods. The surface of the finished product can only present the effect of a board made by a single method, or the effect of a board formed by stacking several layers of boards made by a single method. As described in the literature of Chinese authorized invention patent (authorization announcement number CN108608717B), it can achieve 2-100 layers of pressed board (leather) in the produced acetate fiberboard, which can meet the special requirements of layer color and pattern of acetate fiberboard in eyewear design to a certain extent.

[0004] However, with social progress and people's increasing aesthetic demands, people are no longer satisfied with the status quo and continue to pursue novel and varied styles of acetate fiberboard to meet the higher requirements for the structure, color, and pattern of acetate fiberboard in eyewear design or other applications. Summary of the Invention

[0005] The first objective of this invention is to provide a method for manufacturing cellulose acetate sheets for eyeglass frames. This method is not only simple, but also allows the cellulose acetate sheets produced by this method to simultaneously display the structure, color, or pattern of the plane and cross-section of cellulose acetate sheets produced by conventional methods on a single surface.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A method for manufacturing cellulose acetate sheets for eyeglass frames includes the following steps: A) Arranging at least two types of first cellulose acetate sheets of the same or different styles in a pressing mold, with a predetermined distance between adjacent first cellulose acetate sheets; B) Selecting several second cellulose acetate sheets with a thickness equal to the predetermined distance between the first cellulose acetate sheets, wherein the second cellulose acetate sheets are cellulose acetate sheets having 1 to 100 layers of cellulose acetate skin; C) Cutting the second cellulose acetate sheets, wherein the width of the cut second cellulose acetate sheets is equal to the thickness of the first cellulose acetate sheets; D) Rotating the cut second cellulose acetate sheets 90 degrees and placing them between corresponding adjacent first cellulose acetate sheets, ensuring that their two sides in the thickness direction respectively abut against the sides of the adjacent first cellulose acetate sheets, and their two sides in the width direction are flush with the upper and lower surfaces of the first cellulose acetate sheets; E) Heating and pressing to creep-bond the first and second cellulose acetate sheets into one piece; F) Cooling to room temperature to complete the manufacturing process.

[0008] The advantages of this invention are: not only is the process simple, but the cellulose acetate sheets produced by this method can simultaneously display the structure, color or pattern of the plane and cross-section of cellulose acetate sheets produced by conventional methods on one surface; and they will not bulge in the thickness direction and form bumps in adjacent positions, thus avoiding product defects and not damaging the integrated structure and overall appearance.

[0009] A second objective of this invention is to provide a cellulose acetate sheet for manufacturing eyeglass frames that can simultaneously display on one surface the structure, color, or pattern of a freely combinable combination of the plane and cross-section of cellulose acetate sheets produced by conventional methods.

[0010] To achieve the above objectives, the present invention adopts the following technical solution:

[0011] An acetate fiber sheet for making eyeglass frames, wherein the acetate fiber sheet for making eyeglass frames is made by the manufacturing method described above.

[0012] The advantages of this invention are: it can simultaneously display the structure, color or pattern of the plane and cross-section of the cellulose acetate board produced by existing methods on one surface; and it will not bulge in the thickness direction and form bumps at adjacent positions, thus avoiding product defects, and will not damage the integrated structure and overall appearance.

[0013] A third objective of this invention is to provide a cellulose acetate sheet for manufacturing eyeglass frames that can simultaneously display on one surface the structure, color, or pattern of a freely combinable combination of the plane and cross-section of cellulose acetate sheets produced by conventional methods.

[0014] To achieve the above objectives, the present invention adopts the following technical solution:

[0015] An acetate fiber sheet for making eyeglass frames is formed by heating and pressing a plurality of first acetate fiber sheets and a plurality of second acetate fiber sheets. The first and second acetate fiber sheets are arranged side by side along a width direction. The second acetate fiber sheets are acetate fiber sheets with 1 to 100 layers of acetate fiber skin. In the width direction, the first and second acetate fiber sheets are arranged alternately, and the thickness direction of the second acetate fiber sheets is consistent with the width direction.

[0016] The advantages of this invention are: it can simultaneously display the structure, color or pattern of the plane and cross-section of the cellulose acetate board produced by existing methods on one surface; and it will not bulge in the thickness direction and form bumps at adjacent positions, thus avoiding product defects, and will not damage the integrated structure and overall appearance.

[0017] A fourth objective of this invention is to provide an eyeglass frame that can simultaneously display on one surface the structure, color, or pattern of a freely combinable combination of the plane and cross-section of cellulose acetate sheet produced by conventional methods.

[0018] To achieve the above objectives, the present invention adopts the following technical solution:

[0019] An eyeglass frame includes an eyeglass rim made of the cellulose acetate sheet described above for making eyeglass frames.

[0020] The advantages of this invention are: it can simultaneously display the structure, color or pattern of the plane and cross-section of the cellulose acetate board produced by existing methods on one surface; and it will not bulge in the thickness direction and form bumps at adjacent positions, thus avoiding product defects, and will not damage the integrated structure and overall appearance.

[0021] The fifth objective of this invention is to provide an eyeglass frame that can simultaneously display on one surface the structure, color, or pattern of a freely combinable combination of the plane and cross-section of cellulose acetate sheet produced by conventional methods, as well as the patterns.

[0022] To achieve the above objectives, the present invention adopts the following technical solution:

[0023] An eyeglass frame includes temple threads made of the aforementioned cellulose acetate sheet used for making eyeglass frames.

[0024] The advantages of this invention are: it can simultaneously display the structure, color or pattern of the plane and cross-section of the cellulose acetate board produced by existing methods on one surface; and it will not bulge in the thickness direction and form bumps at adjacent positions, thus avoiding product defects, and will not damage the integrated structure and overall appearance. Attached Figure Description

[0025] Figure 1 This is a three-dimensional structural diagram of the second cellulose acetate board material before it is cut, as shown in the embodiment of the present invention.

[0026] Figure 2 This is a three-dimensional structural diagram of the second cellulose acetate board material after cutting in an embodiment of the present invention.

[0027] Figure 3 This is a three-dimensional structural diagram of the second cellulose acetate board material after it has been cut and rotated 90 degrees in an embodiment of the present invention.

[0028] Figure 4 This is a three-dimensional structural diagram of the first and second cellulose acetate boards to be spliced ​​in an embodiment of the present invention.

[0029] Figure 5 This is a three-dimensional structural diagram of the first and second cellulose acetate boards after splicing in an embodiment of the present invention.

[0030] Figure 6 This is a front view of the eyeglass rim of an eyeglass frame in an embodiment of the present invention.

[0031] Figure 7 This is a front view of the eyeglass rim of another eyeglass frame in an embodiment of the present invention.

[0032] Figure 8 This is a front view of the temple wires of the eyeglass frame in an embodiment of the present invention. Detailed Implementation

[0033] Example 1

[0034] As attached Figure 5 The illustrated cellulose acetate sheet for making eyeglass frames is formed by heating and pressing two first cellulose acetate sheets 1 and two second cellulose acetate sheets 2. The first cellulose acetate sheets 1 and the second cellulose acetate sheets 2 are arranged side by side along a width direction W. In the width direction W, the first cellulose acetate sheets 1 and the second cellulose acetate sheets 2 are arranged alternately, and the thickness direction of the second cellulose acetate sheets 2 is consistent with the width direction W.

[0035] The first cellulose acetate board 1 and the second cellulose acetate board 2 can each adopt different structures, colors or patterns, thus enabling the simultaneous display of the plane and cross-section of cellulose acetate boards produced by existing methods on a single surface, allowing for free combination of structures, colors or patterns.

[0036] The second cellulose acetate board 2 is a cellulose acetate board having 1 to 100 layers of cellulose acetate veneer 21. The thickness of the different layers of cellulose acetate veneer 21 can be equal or unequal. Figure 1 To be continued Figure 3The second cellulose acetate sheet 2 shown is a cellulose acetate sheet with 5 layers of cellulose acetate skin 21. When the second cellulose acetate sheet 2 is a cellulose acetate sheet with 1 layer of cellulose acetate skin 21, the cellulose acetate sheet used for making eyeglass frames is equivalent to using a single cut pattern of the second cellulose acetate sheet 2. When the second cellulose acetate sheet 2 is a cellulose acetate sheet with more than 2 layers (including 2 layers) of cellulose acetate skin 21, the cellulose acetate sheet used for making eyeglass frames is equivalent to using a plurality of cut patterns of the second cellulose acetate sheet 2.

[0037] Of course, the cellulose acetate sheets used to make eyeglass frames can also be formed by heating and pressing more than two first cellulose acetate sheets 1 and more than two second cellulose acetate sheets 2. Eyeglass frames made from cellulose acetate sheets are shown in the attached image. Figure 6 To be continued Figure 8 As shown, among which, appendix Figure 6 and attached Figure 7 The image shows the use of cellulose acetate sheets in eyeglass frames, with... Figure 8 The image shows cellulose acetate sheets used on the temple threads of an eyeglass frame.

[0038] Example 2

[0039] This embodiment illustrates a method for manufacturing cellulose acetate sheets for eyeglass frames. The specific steps are as follows:

[0040] A. Arrange at least two identical or different types of first cellulose acetate sheets 1 in a pressing mold, with a set distance between adjacent first cellulose acetate sheets 1.

[0041] B. Select a number of second cellulose acetate sheets 2 with a thickness equal to the set distance between each of the first cellulose acetate sheets 1. The second cellulose acetate sheets 2 are cellulose acetate sheets with 1 to 100 layers of cellulose acetate skin 21.

[0042] C. Cut the second cellulose acetate board material 2, as shown in the attached document. Figure 1 As shown, attached Figure 1 The dotted lines in the diagram refer to the cutting lines. The width of the second cellulose acetate board 2 formed by the cutting is equal to the thickness of the first cellulose acetate board 1, as shown in the attached diagram. Figure 2 As shown.

[0043] D. Flip the second cellulose acetate board material 2 formed by cutting 90 degrees, as shown in the attached figure. Figure 3 As shown, it is placed between corresponding adjacent first cellulose acetate boards 1, ensuring that its two sides in the thickness direction D abut against the sides of the adjacent first cellulose acetate boards 1, and its two sides in the width direction W1 are flush with the upper and lower surfaces (s1, s2) of the first cellulose acetate boards 1, as shown in the attached figure. Figure 4As shown.

[0044] E. Heating and pressing to creep-bond the first cellulose acetate board 1 and the second cellulose acetate board 2 into one piece, as shown in the attached figure. Figure 5 As shown, the finished product, which is bonded together by creep, does not form seams between different sheets. When making specific products such as eyeglass frames, it will not crack at the joints of different sheets due to bending. The structure is stable and facilitates processing.

[0045] F. Cool to room temperature to complete the process.

[0046] The first cellulose acetate board 1 and the second cellulose acetate board 2 can each adopt different structures, colors or patterns, thus enabling the simultaneous display of the plane and cross-section of cellulose acetate boards produced by existing methods on a single surface, allowing for free combination of structures, colors or patterns.

[0047] In step B, the second cellulose acetate board material 2 can be formed by baking cellulose acetate granules of different colors and shapes at high temperatures and then extruding them through a die and a roller. Alternatively, it can be formed by mixing cellulose acetate granules of different colors and shapes into particles of different sizes and colors using a granulator and pelletizer, then placing them in a press mold, pressing them at high temperatures, and planing the bottom. It can also be a cellulose acetate board material with 2 to 100 layers of veneer. Specifically, it involves spraying 2 to 100 sheets of cellulose acetate veneer with adhesive, bonding them together to form a module of thickness, then placing the module in a panelizing machine for hot pressing, cooling it to room temperature, and then cold pressing it to form the final product.

[0048] It is worth noting that during the production process, in the direction of the first cellulose acetate sheet 1 (i.e., the width direction W), the difference between the total width of the first cellulose acetate sheet 1 and the second cellulose acetate sheet 2 and the width of the pressing die is between 0 and 0.5 mm. This ensures that when heated and pressed, each material can extend in the width direction W after thermal expansion, and will not bulge in the thickness direction to form bulges at adjacent positions, which would cause product defects and damage the integrated structure and overall appearance.

[0049] In step A, the heating and pressing process involves a temperature between 150°C and 170°C and a pressure of 35 kg / cm². 2 Up to 45kg / cm 2 The heating and pressing process takes 50 to 70 minutes, under which conditions the product will have the best results.

[0050] Acetate fiberboard produced by this method is shown in the attached figure. Figure 5 As shown.

[0051] Eyeglass frames made of cellulose acetate sheets, as shown in the attached image. Figure 6 To be continued Figure 8 As shown, among which, appendix Figure 6 and attached Figure 7 The image shows the use of cellulose acetate sheets on the eyeglass frame 41, while the attached... Figure 8 The image shows the use of cellulose acetate sheets on temple threads 42 of an eyeglass frame. This allows for the simultaneous display of the planar and cross-sectional structures, colors, or patterns of cellulose acetate sheets produced using conventional methods on a single surface.

[0052] The above embodiments are preferred embodiments of the present invention, but the embodiments of the present invention are not limited thereto. Any changes, modifications, substitutions, combinations, or simplifications made without departing from the spirit and principle of the present invention are equivalent substitutions and are included within the protection scope of the present invention.

Claims

1. A method for manufacturing a cellulose acetate sheet material for use in the manufacture of eyeglass frames, characterized by, It comprises the following steps: A. Arrange at least two first cellulose acetate sheet materials of the same or different patterns in a pressing mold, with a set distance between adjacent first cellulose acetate sheet materials; B. Select several second cellulose acetate sheet materials with a thickness equal to the set distance between the first cellulose acetate sheet materials, the second cellulose acetate sheet material being a cellulose acetate sheet material with 1 to 100 layers of cellulose acetate skin, and the second cellulose acetate sheet material being made of cellulose acetate glue particles of different colors and shapes; C. Cut the second cellulose acetate sheet material, and the width of the cut second cellulose acetate sheet material is equal to the thickness of the first cellulose acetate sheet material; D. Turn the cut second cellulose acetate sheet material by 90 degrees and place it between the corresponding adjacent first cellulose acetate sheet materials, so that the two thickness directions of the second cellulose acetate sheet material respectively touch the side surfaces of the adjacent first cellulose acetate sheet materials, and the two width directions of the second cellulose acetate sheet material respectively align with the upper and lower surfaces of the first cellulose acetate sheet material; in the direction of the arrangement of the first cellulose acetate sheet materials, the total width of the first cellulose acetate sheet material and the second cellulose acetate sheet material is between 0 and 0.5 mm different from the width of the pressing mold, so that after heating and pressing, the materials do not bulge in the thickness direction after expansion; E. Heat and press to combine the first cellulose acetate sheet material and the second cellulose acetate sheet material into one body; F. Cool to room temperature to complete the production.

2. The method of claim 1, wherein the cellulose acetate sheet is used for manufacturing eyeglass frames. The second cellulose acetate sheet material in step B is formed by extruding different colors and shapes of cellulose acetate glue particles through a mold group and a light wheel after high-temperature baking.

3. The method of claim 1, wherein the cellulose acetate sheet is used for manufacturing eyeglass frames. The second cellulose acetate sheet material in step B is formed by mixing particles of different sizes and color effects after granulating and pelletizing different colors and shapes of cellulose acetate glue particles, and then placing them in a pressing machine mold, high-temperature pressing, and planing the bottom to form.

4. The method of claim 1, wherein the cellulose acetate sheet is used for manufacturing eyeglass frames. The second cellulose acetate sheet material in step B is a cellulose acetate sheet material with 2 to 100 layers of skin, which is formed by spraying glue on 2 to 100 layers of cellulose acetate skin and pasting them together to form a module with thickness, then placing the module into a board splicing machine for hot pressing and cooling to room temperature, and then cold pressing to form.

5. The method of claim 1, wherein the cellulose acetate sheet is used for making eyeglass frames. The heating and pressing process of step E is carried out at a temperature of 150°C to 170°C, a pressure of 35kg / cm 2 to 45kg / cm 2 and a time of 50 minutes to 70 minutes.

6. A cellulose acetate sheet material for use in making eyeglass frames, characterized by, The cellulose acetate sheet material for making eyeglass frames is made by the production method of any one of claims 1 to 5.

7. A spectacle frame comprising a spectacle ring, characterized in that The eyeglass ring is made of the cellulose acetate sheet material for making eyeglass frames of claim 6.

8. A spectacle frame comprising spectacle temple wires, characterized in that The eyeglass stem is made of the cellulose acetate sheet material for making eyeglass frames of claim 6.

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