Plastic dye particle capable of adjusting apparent density
By changing the plastic dye particles to a spiral structure and adjusting the apparent density, the problem of uneven mixing was solved, a more uniform mixing effect was achieved, and color difference and surface defects were avoided.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-18
- Publication Date
- 2026-03-24
AI Technical Summary
The density difference between existing plastic dye particles and main material particles leads to uneven mixing, resulting in color difference, color spots or surface defects in the products.
The structure of plastic dye particles is changed to a helical structure, and its apparent density is adjusted by increasing surface grooves and inter-chain pores to match the density of the main material particles and improve the uniformity of mixing.
By adjusting the apparent density of the plastic dye particles, the uniformity of mixing was improved, and color difference and surface defects were avoided.
Smart Images
Figure CN224030913U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The application belongs to the technical field of plastic colorants, and particularly relates to plastic dye particles capable of adjusting apparent density. BACKGROUND
[0002] Plastic dye plastic colorants include color masterbatch, color sand, color paste, color powder and the like, among which the color masterbatch and the color sand are most widely used. The common form of the color masterbatch is a spherical or cylindrical particle with a diameter of 2-5 mm. There are the following technical problems: during mixing, due to the existence of a certain density difference between the main material particles and the dye particles, the problem of uneven mixing is prone to occur.
[0003] The density range of common plastic raw material particles is as follows g / cm³:
[0004] Polypropylene (PP): 0.89-0.93
[0005] Polyethylene (PE): low-density polyethylene (LDPE): 0.91-0.94; high-density polyethylene (HDPE): 0.93-0.97
[0006] Polyvinyl chloride (PVC): 1.35-1.42
[0007] Polystyrene (PS): 1.03-1.07
[0008] Polycarbonate (PC): 1.18-1.22
[0009] Polyoxymethylene (POM): 1.40-1.44
[0010] Polyamide (PA): nylon 6 (PA6): 1.12-1.15; nylon 66 (PA66): 1.12-1.16
[0011] Polyester (PET): 1.38-1.45
[0012] Polyphenylene oxide (PPO): 1.03-1.07
[0013] Polymethyl methacrylate (PMMA), organic glass: 1.17-1.20
[0014] Polyether ether ketone (PEEK): 1.27-1.33
[0015] Polytetrafluoroethylene (PTFE): 2.12-2.17
[0016] Polyphenylene sulfide (PPS): 1.33-1.39
[0017] Acrylonitrile-butadiene-styrene copolymer (ABS): 1.04-1.08
[0018] Commonly used plastic dye particles have a density ranging from 1.5 to 1.9 g / cm3, while inorganic pigments such as titanium dioxide have a density of 3.5 to 5.0 g / cm3, and fillers such as calcium carbonate, talc have a higher dye density.
[0019] Mixing unevenness can cause color differences such as uneven color distribution, color spots or stripes, and surface defects such as flow marks, bubbles, or rough surfaces.
[0020] Extending the mixing time and increasing the stirring intensity are one of the feasible solutions to solve the mixing unevenness, but it will cause particle abrasion and generate small particle materials or powders that are easy to settle at the bottom. Practical new type content
[0021] Therefore, the present application provides a plastic dye particle capable of adjusting the apparent density to solve all or part of the technical problems described in the background section.
[0022] The innovative concept of the present application is to change the structure of the plastic dye particle to a spiral structure such as a double helix or a triple helix, and adjust the apparent density of the dye particle to match the main material particle by increasing the surface groove and / or interchain pore, thereby improving the mixing uniformity.
[0023] The solution provided by the present application to solve the technical problem is:
[0024] A plastic dye particle capable of adjusting the apparent density, characterized by having a spiral structure.
[0025] As a preferred embodiment, the spiral structure is a double helix or a triple helix.
[0026] As a preferred embodiment, the plastic dye particle capable of adjusting the apparent density has a double helix structure; including a forward helix chain and a reverse helix chain; the forward helix chain and the reverse helix chain are coaxially rotated and extended to form a double helix structure.
[0027] As a preferred embodiment, the plastic dye particle capable of adjusting the apparent density has a triple helix structure; including a first helix chain, a second helix chain, and a third helix chain; the first helix chain, the second helix chain, and the third helix chain are coaxially rotated and extended to form a triple helix structure.
[0028] As a preferred embodiment, the two end edge parts of the plastic dye particle capable of adjusting the apparent density are provided with a rounded structure.
[0029] As a preferred embodiment, the outer surface of the plastic dye particle capable of adjusting the apparent density is provided with a spiral groove.
[0030] As a preferred embodiment, the middle part of the plastic dye particle capable of adjusting the apparent density is provided with an interchain gap.
[0031] Beneficial technical effects:
[0032] The present application improves the existing spherical or cylindrical particle structure to a helical structure, which can adjust the apparent density of the dye particles through the helical groove and inter-chain void, thereby matching different plastic master materials and improving the mixing effect.
[0033] The technical solutions and technical effects of the present application are described in detail below in conjunction with the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF DRAWINGS
[0034] Figure 1 : Three-helix plastic dye particle structure schematic diagram;
[0035] Figure 2 : Figure 1 Cross-sectional view of dye particles;
[0036] Figure 3 : Double-helix plastic dye particle structure schematic diagram;
[0037] Figure 4 : Figure 3 Cross-sectional view of dye particles;
[0038] FIG. 1: Description of the figure:
[0039] 1-Forward helical chain;
[0040] 2-Reverse helical chain;
[0041] 3-First helical chain;
[0042] 4-Second helical chain;
[0043] 5-Third helical chain;
[0044] 6-Round corner structure;
[0045] 7-Helical groove. DETAILED DESCRIPTION
[0046] First preferred embodiment: three-helix plastic dye particle
[0047] The three-helix plastic dye particle includes a first helical chain 3, a second helical chain 4, and a third helical chain 5. The first helical chain 3, the second helical chain 4, and the third helical chain 5 are coaxially and rotationally extended to form a three-helix structure.
[0048] The round corner structure 6 is arranged at the two end edge parts of the dye particle. The helical groove structure 7 is arranged on the outer surface of the dye particle. The inter-chain void structure is arranged at the middle part of the dye particle.
[0049] Second preferred embodiment: double-helix plastic dye particle
[0050] The double helix plastic dye particle comprises a positive helix chain and a negative helix chain, and the positive helix chain and the negative helix chain are coaxially and extended to form a double helix structure.
[0051] The two end edge parts of the dye particle are provided with a round corner structure 6. The outer surface of the dye particle is provided with a helical groove structure 7. The middle part of the dye particle is provided with an inter-chain gap structure.
[0052] In the specific implementation, the diameter and the surrounding angle of the helix single chain can be flexibly adjusted according to the given main material density, so as to obtain a dye particle form whose apparent density can be matched with the main material particle. The molding process can adopt a conventional extrusion molding die. Taking the double helix dye particle as an example, two helix surrounding extrusion die mouths should be arranged on the extrusion die, and the material is extruded and molded from the two die mouths, and then cut by a cutter to obtain the double helix dye particle. The triple helix is similar and will not be described here.
[0053] The technical solutions and technical effects of the present application are described in detail in combination with the drawings and specific examples in the specification. It should be noted that other embodiments can be developed by those skilled in the art on the basis of the above; any simple transformation and equivalent replacement without departing from the innovative concept of the present application are covered by the present application and belong to the protection scope of the present patent.
Claims
1. A type of plastic dye particle capable of adjusting apparent density, characterized in that: It has a helical structure.
2. The plastic dye particles capable of adjusting apparent density according to claim 1, characterized in that: The helical structure is a double helix or a triple helix.
3. The plastic dye particles capable of adjusting apparent density according to claim 2, characterized in that: The plastic dye particles capable of adjusting apparent density have a double helix structure; Including forward spiral chain (1) and reverse spiral chain (2); The forward spiral chain (1) and the reverse spiral chain (2) extend coaxially to form a double spiral structure.
4. The plastic dye particles capable of adjusting apparent density according to claim 2, characterized in that: The plastic dye particles capable of adjusting apparent density have a triple helix structure; Including the first helical chain (3), the second helical chain (4), and the third helical chain (5); The first spiral chain (3), the second spiral chain (4), and the third spiral chain (5) are coaxially rotated and extended to form a triple spiral structure.
5. The plastic dye particles capable of adjusting apparent density according to claim 3 or 4, characterized in that: The plastic dye particles that can adjust the apparent density are provided with rounded corner structures at both ends (6).
6. The plastic dye particles capable of adjusting apparent density according to claim 3 or 4, characterized in that: The outer surface of the plastic dye particles that can adjust the apparent density is provided with spiral grooves (7).
7. The plastic dye particles capable of adjusting apparent density according to claim 1, characterized in that: The plastic dye particles, which are capable of adjusting apparent density, have inter-chain pores in their middle portion.