Cap tongue piece as well as preparation method and application thereof

Abstract

The invention discloses a visor piece as well as a preparation method and application thereof, and belongs to the field of hats. The visor piece comprises the elastic flat plate and the outer cover wrapping the elastic flat plate, and the elastic flat plate can be bent at will and can be rebounded to the original shape again after being stretched at will; wherein the elastic flat plate is prepared from polyester rubber. The visor piece disclosed by the invention has high resilience, flexibility and durability, and the visor piece can be randomly changed in camber and randomly stretched to be rebounded to the original shape again. After the cap tongue piece is used for preparing a cap product, the convenience and portability of the product are enhanced, meanwhile, high production efficiency and quality consistency are achieved, and the requirements of modern consumers for personalized, environment-friendly and high-performance products are met.

Description

Technical Field

[0001] The invention relates to the technical field of hats, and in particular to a cap visor and a preparation method and application thereof. Background Art

[0002] In the design and manufacture of hats, the visor (also called the eyebrow) is an important component. With the development of the economy and the improvement of living standards, people's requirements for hats are not limited to their basic sunshade and warmth-keeping functions. They also hope that hats have more personalized features and can be used flexibly in different occasions. For example, in sports, travel and outdoor activities, people hope that hats can be convenient to carry and can quickly return to their original shape when used. In the field of fashion, consumers have higher requirements for the appearance, style and function of hats, hoping that hats are both beautiful and practical. Traditional visors are usually made of hard plastic or other rigid materials. Although these materials can provide the shape and support required by the visor, they also have obvious disadvantages, such as easy to break, difficult to bend, and inconvenient to carry. In addition, the visors made of these traditional materials are easily deformed after long-term use, affecting the appearance and service life of the hat.

[0003] Therefore, it is necessary to provide a visor that can be bent arbitrarily and has support so as to meet the high standards and diversified demands of modern consumers for hat products. Summary of the invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a cap visor with high resilience and durability, which can change the curvature at will and rebound to the original shape after being stretched at will.

[0005] The invention also provides a method for preparing the cap visor.

[0006] The invention also provides application of the cap visor.

[0007] A first aspect of the present invention provides a cap brim piece, the cap brim piece comprising an elastic flat plate, wherein the elastic flat plate is made of a material comprising TPEE.

[0008] The cap brim according to the first embodiment of the present invention has at least the following beneficial effects:

[0009] The elastic flat plate in the visor of the present invention adopts polyester rubber as the main preparation material, which is the first time that polyester rubber is applied to the processing and development of the visor. The raw material of the traditional visor is HDPE, which has high density, high hardness, strong rigidity and is difficult to fold, and continuous force will cause yielding or breaking. Thermoplastic polyester elastomer (TPEE) in this application is also called polyester rubber, which has excellent elasticity, impact resistance, creep resistance, cold resistance, bending fatigue resistance, oil resistance, resistance to chemicals and solvent corrosion, etc., and is very suitable as a material for making the visor. Utilizing these excellent properties of TPEE material, the flexibility and resilience of the visor can be greatly improved, so that it can be bent and folded at will during use, and can be easily stored in a small space, solving the problem of the inconvenience of carrying the traditional visor. However, the TPEE material has the defect of poor fluidity during injection molding, which may cause the prepared product to be unevenly glued and difficult to mold with a large number of bubbles.

[0010] According to some embodiments of the present invention, the thickness of the elastic plate is 0.8 mm to 2.5 mm.

[0011] According to some embodiments of the present invention, the height of the center point of the visor is 0 cm to 7 cm.

[0012] The center point of the brim piece is the maximum value of the distance between any point on the brim and the plane where the brim is located after being flattened.

[0013] Specifically, the visor piece of any eyebrow shape can be designed according to customer needs. For example, when the height of the center point of the visor piece is 0 cm, the visor piece is a flat eyebrow shape, and when the height of the center point of the visor piece is greater than 0 cm, the visor piece is a curved shape.

[0014] According to some embodiments of the present invention, the material used to prepare the elastic flat plate further includes a linear polyethylene material, an ultraviolet absorber, a light stabilizer and a color powder.

[0015] According to some embodiments of the present invention, the ultraviolet absorber includes 2,4-dihydroxybenzophenone (CAS No.: 606-12-2).

[0016] According to some embodiments of the present invention, the light stabilizer includes a high molecular weight triazine-piperidine condensate (UV-119, CAS No.: 106990-43-6).

[0017] A second aspect of the present invention provides a method for preparing the above-mentioned cap visor, the method comprising:

[0018] The prepared material including the TPEE is preheated, injection molded, and cooled to obtain the cap visor.

[0019] According to some embodiments of the present invention, the specific preparation method includes:

[0020] The TPEE, ultraviolet absorber, light stabilizer and color powder are mixed and preheated, injection molded, and cooled and shaped to obtain the cap visor.

[0021] The preparation method according to the second aspect of the present invention has at least the following beneficial effects:

[0022] The preparation method of the visor of the present invention adopts preheating → injection molding → cooling → molding and integrated processing. By increasing the melt temperature, increasing the front mold temperature of the auxiliary equipment oil temperature machine, and setting the corresponding machine adjustment technical parameters, such as mold closing, filling injection molding, pressure holding, cooling, mold opening, and demolding, a complete product is made, which greatly improves the function of the visor to change the curvature at will. The preheating treatment of the present invention uses infrared drying of raw materials for the first time to ensure the dryness and fluidity of the materials; the present invention adopts injection molding technology so that the raw materials can be evenly injected into the mold and stably molded, and the shape and size of the visor can be accurately controlled, so that it has excellent plasticity and flexibility. The visor after injection molding can be easily folded or bent without affecting its elasticity and durability, which is convenient for users to carry when traveling or exercising. The injection molding process combined with the cooling and shaping method makes the production process of the visor more efficient, can achieve large-scale production, and improves production efficiency. The integrated processing method ensures that the size and shape of each visor are consistent, ensures the consistency of product quality, and reduces the scrap rate in the production process.

[0023] The preparation method of the present invention overcomes the disadvantage of poor fluidity of TPEE material through strict material selection, accurate color mixing processing, reasonable preheating and heating, fine injection molding processing and cooling and shaping, as well as perfect water inlet processing and finished product inspection, and ensures high resilience, durability and aesthetics of the visor.

[0024] According to some embodiments of the present invention, the preheating treatment is to dry the raw materials using infrared rays.

[0025] According to some embodiments of the present invention, the temperature of the preheat treatment is 100-110°C, for example, 100°C, 102°C, 105°C, 108°C, or 110°C.

[0026] According to some embodiments of the present invention, the preheating time is 3 to 5 hours, for example, 3 hours, 3.5 hours, 4 hours, 4.5 hours, or 5 hours.

[0027] The present invention focuses on the drying degree of the material. Different from the traditional oil temperature dryer, it adopts infrared drying, which effectively solves the problem of poor fluidity of TPEE during injection molding, while keeping the performance of the raw materials intact.

[0028] According to some embodiments of the present invention, the cooling treatment time is 15 to 20 seconds.

[0029] According to some embodiments of the present invention, the temperature of the injection molding process is 190-260°C.

[0030] According to some embodiments of the present invention, the injection molding process includes injection, pressure holding and melt processing steps.

[0031] According to some embodiments of the present invention, the speed of the injection process is 25% to 75%.

[0032] According to some embodiments of the present invention, the injection molding process has a pressure of 100 to 155 bar.

[0033] According to some embodiments of the present invention, the stroke of the injection molding process is 8 to 42 mm.

[0034] According to some embodiments of the present invention, the injection process lasts for 3 to 5 seconds.

[0035] According to some embodiments of the present invention, the injection process can be divided into at least three stages, for example, it can be: injection stage 1: injection speed 75%, pressure 155 bar, injection stroke 31 mm; injection stage 2: injection speed 60%, pressure 150 bar, injection stroke 26 mm; injection stage 3: injection speed 55%, pressure 140 bar, injection stroke 18 mm; injection stage 4: injection speed 40%, pressure 135 bar, injection stroke 18 mm.

[0036] According to some embodiments of the present invention, the pressure maintaining treatment lasts for 4 to 5 seconds.

[0037] According to some embodiments of the present invention, the pressure of the pressure-maintaining treatment is 140-155 bar.

[0038] According to some embodiments of the present invention, the pressure-maintaining treatment may be divided into at least three stages.

[0039] According to some embodiments of the present invention, the speed of the melt processing is 15% to 95%.

[0040] According to some embodiments of the present invention, the pressure of the melt processing is 35 to 165 bar.

[0041] According to some embodiments of the present invention, the thickness of the melt-bonded film is 4 to 60 mm.

[0042] According to some embodiments of the present invention, the melt adhesive treatment includes melt adhesive treatment and post-melt loosening treatment.

[0043] Too high an injection molding temperature may cause the product to deform and shrink, while too low a temperature may cause the product surface to be rough and internally hollow. Insufficient injection molding pressure may cause the product to be underfilled and concave on the surface, while excessive pressure may cause flash and overflow. Insufficient holding time may cause internal hollows and unstable dimensions of the product, while too long a holding time may cause the product to deform and crack. Insufficient cooling time may cause the product to deform and crack when demolding, while too long a cooling time may affect production efficiency.

[0044] The third aspect of the present invention provides a hat, comprising the above-mentioned brim piece and / or the brim piece prepared by the above-mentioned preparation method, and a hat body part for covering the wearer's head, wherein the brim piece is sewn together along the bottom edge of the hat body.

[0045] The application according to the third aspect of the present invention has at least the following technical effects:

[0046] The visor of the present invention can be processed and formed according to customer needs, and the finished visor can be easily and gently brought into a small space with a diameter of less than 7 cm by hand, which is convenient for storage and convenient carrying. At the same time, the visor can be easily flattened or bent by hand, and when opened from a small space, the visor can rebound 80-100% to the center point height set at the factory without deformation or creases. This feature ensures that no matter how the outer ring shape of the visor changes during use, the stitching of the cap body and the visor can remain perfect and can maintain its purpose throughout the service life.

[0047] The visor of the present invention has good softness and can protect the head and temples; it has good resilience and can be convenient to carry and maintain the eyebrow shape during use; it also has plasticity and can be customized to produce various eyebrow heights; it has fatigue resistance, and the produced visor is relatively light and thin, which effectively relieves the pressure on the head; it is environmentally friendly, the visor can be recycled and reused, is non-toxic and harmless, and meets environmental protection requirements.

[0048] A fourth aspect of the present invention provides use of the above-mentioned visor in a foldable hat.

[0049] The application according to the fourth aspect of the present invention has at least the following technical effects:

[0050] The visor of the present invention can help the wearer to form a tailor-made visor or brim curve according to his / her own preferences when used in a hat, and restore it to the original flat shape as needed for easy wearing or storage.

[0051] Definition of the present invention: In this article, the speed of the injection molding process (such as injection speed, melting speed, etc.) is expressed as a percentage of the maximum speed of the machine. Specifically, the speed percentage is defined as follows:

[0052] Speed ​​(%) = (actual speed / machine maximum speed) × 100; where: actual speed refers to the operating speed at a certain stage in the injection molding process; machine maximum speed refers to the maximum operating speed that the injection molding machine can reach at that stage. For example, if the injection speed is 75%, it means that the speed of the current injection stage is 75% of the maximum injection speed of the injection molding machine.

[0053] Other features and advantages of the present invention will be set forth in the description which follows, and in part will be apparent from the description, or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0054] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0055] Figure 1 is a production process flow chart of Example 1 of the present invention;

[0056] Figure 2 This is a planar dimension diagram of the cap brim piece of Example 1 of the present invention;

[0057] Figure 3 This is a schematic diagram of a cap visor with a height of 1.0 cm in Example 1 of the present invention;

[0058] Figure 4 This is a schematic diagram of a cap visor of Example 1 of the present invention having a height of 7.0 cm;

[0059] Figure 5 This is a schematic diagram of a cap visor of Example 1 of the present invention having a height of 5.0 cm;

[0060] Figure 6 This is a schematic diagram of a flat eyebrow shape of a cap visor according to Example 1 of the present invention;

[0061] Figure 7 The figures are bending test diagrams of the visor pieces in Example 1 and Comparative Example 1 of the present invention; wherein (a) is Comparative Example 1, and (b) is Example 1. DETAILED DESCRIPTION

[0063] The following will be combined with the embodiments to clearly and completely describe the concept of the present invention and the technical effects produced, so as to fully understand the purpose, characteristics and effects of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, other embodiments obtained by those skilled in the art without creative work are all within the scope of protection of the present invention.

[0064] In the description of the present invention, if there is a description of first, second, etc., it is only for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0065] When a numerical range is disclosed herein, the above range is considered to be continuous and includes the minimum and maximum values ​​of the range, as well as every value between such minimum and maximum values. Further, when a range refers to an integer, every integer between the minimum and maximum values ​​of the range is included. In addition, when multiple ranges are provided to describe features or characteristics, the ranges can be combined. In other words, unless otherwise indicated, all ranges disclosed herein should be understood to include any and all subranges included therein.

[0066] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of the present invention.

[0067] Unless otherwise specified, the reagents, methods and equipment used in the present invention are conventional reagents, methods and equipment in the art.

[0068] It should be noted that, in order to avoid obscuring the present invention due to unnecessary details, only structures and / or processing steps closely related to the technical solution of the present invention are shown in the accompanying drawings, while other details that are not closely related to the present invention are omitted. In addition, it should be noted that the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0069] Example 1

[0070] This embodiment provides a cap visor, the plane size of the cap visor is 12cm*14.5cm. Figure 2 As shown; the height of the visor can be set according to customer needs, for example Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 shown.

[0071] The specific preparation process of the visor is as follows:

[0072] 1) TPEE, linear polyethylene material, 2,4-dihydroxybenzophenone, UV-119 and pigment are mixed evenly according to the proportion of the predetermined process formula, and the raw materials are preheated at 105°C using infrared rays and dried for 4 hours;

[0073] 2) Put the preheated material into the injection molding machine for filling and injection molding:

[0074] Injection molding machine settings: The front mold water supply is set to 70℃ oil temperature to ensure that the mold temperature is moderate, which is conducive to the flow and molding of the material; rear mold water supply: Use mold water to cool the rear mold to keep the mold temperature stable. Injection stage 1: injection speed 75%, pressure 155bar, injection stroke 31mm; injection stage 2: injection speed 60%, pressure 150bar, injection stroke 26mm; injection stage 3: injection speed 55%, pressure 140bar, injection stroke 18mm; injection stage 4: injection speed 40%, pressure 135bar, injection stroke 18mm. Melting stage 1: speed 95%, pressure 165bar, back pressure 1bar, position 60mm. Loosening after melting: speed 15%, pressure 35bar, position 4mm.

[0075] 3) After the pressure is maintained, the injection molded visor is cooled in the mold for 18 seconds to be shaped. After cooling and shaping, the visor is opened, locked, and ejected from the mold (DS23-77) and treated with a sprue. The visor after the sprue treatment is inspected and packaged. Among them, the scraps in the production are crushed and processed and recycled again according to the process formula.

[0076] This embodiment also provides a hat made by sewing the above-mentioned visor and the hat body part for covering the wearer's head together along the bottom edge of the hat body. The production process is as follows: Figure 1 shown.

[0077] Example 2

[0078] The specific process of preparing the visor is as follows:

[0079] 1) TPEE, linear polyethylene material, 2,4-dihydroxybenzophenone, UV-119 and pigment are mixed evenly according to the proportion of the predetermined process formula, and the raw materials are preheated at 105°C using infrared rays and dried for 4 hours;

[0080] 2) Put the preheated material into the injection molding machine for filling and injection molding:

[0081] Injection molding machine settings: front mold water supply is set to 70℃ oil temperature to ensure that the mold temperature is moderate, which is conducive to the flow and molding of materials; rear mold water supply: use mold water to cool the rear mold to keep the mold temperature stable. Injection stage 1: injection speed 50%, pressure 115bar, injection stroke 42mm; injection stage 2: injection speed 42%, pressure 120bar, injection stroke 35mm; injection stage 3: injection speed 25%, pressure 100bar, injection stroke 22mm; melt stage 1: speed 90%, pressure 165bar, back pressure 1bar, position 60mm. After melting, loosening and retreating: speed 15%, pressure 35bar, position 4mm.

[0082] 3) After the pressure is maintained, the injection molded visor is cooled in the mold for 18 seconds to be shaped. After cooling and shaping, the visor is opened, locked, and ejected from the mold (DS24-023) and the sprue is processed. The visor after the sprue is processed is inspected and packaged. Among them, the scraps in the production are crushed and processed again according to the process formula.

[0083] Example 3

[0084] This embodiment provides a cap visor, and the preparation process is the same as that of embodiment 1; the specifications of the cap visor are:

[0085] The unfolded plane size of the brim is 6.9cm*17.8cm. The thickness of the brim is thick in the middle and becomes thinner towards the edge. The middle thickness is 1.2mm and the edge thickness is 0.8mm. The outermost hollow hole is 6mm away from the edge. The hole size is 2mm*2mm. The center height of the brim is 52mm.

[0086] Example 4

[0087] This embodiment provides a cap brim piece, and the preparation process is the same as that of embodiment 1; the specification of the cap brim piece is different from that of embodiment 3 in that the center height of the cap brim piece is 45 mm.

[0088] Comparative Example 1

[0089] This comparative example provides a commercially available cap visor, which is made of HDPE. After being bent, it cannot be restored to its original height and cannot be bent 360 degrees. Figure 7 (a) shown.

[0090] Test Example 1

[0091] A cylinder with a diameter of 7 cm was selected. The size of the visor of Example 1 was 12 cm*14.5 cm, and the height of the visor was 3.5 cm. The visor was gently bent to 360 degrees and placed in the cylinder with a diameter of 7 cm. It was successfully placed in the cylinder. After being taken out of the cylinder after 5 hours, the visor basically returned to the center height when it left the factory, without any deformation or creases. The results are as follows: Figure 7 (b) as shown.

[0092] Test Example 2

[0093] A cylinder with a diameter of 5 cm was selected, and the size of the visor of Example 1 was 12 cm*14.5 cm, and the height of the visor was 3.5 cm. The visor was gently bent to 360 degrees twice, and placed in a cylinder with a diameter of 7 cm. It was successfully stored in the cylinder. After being taken out of the cylinder after 5 hours, the visor basically returned to the center height when it left the factory, without any deformation or crease.

[0094] Test Example 3

[0095] A cylinder with a diameter of 4 cm was selected, and the size of the visor of Example 1 was 12 cm*14.5 cm, and the height of the visor was 3.5 cm. The visor was gently bent to 360 degrees four times, and placed in a cylinder with a diameter of 7 cm. It was successfully stored in the cylinder. After being taken out of the cylinder after 5 hours, the visor basically returned to the center height when it left the factory, without any deformation or crease.

[0096] In summary, the super-resilient visor in the above test has a good function of changing the curvature at will in a cylinder with a minimum diameter of only 4cm. It can basically recover to its original height after long-term bending and deformation, and maintains 80% to 100% of its elasticity. Further verification shows that when customers are traveling outdoors, in order to reduce load and release more space, the super-resilient visor can freely stretch and change its curvature in volume, which has a strong advantage.

[0097] The visor of the present invention is mainly based on customer experience. For example, the pocket size of ordinary jeans is generally based on the minimum cylindrical opening diameter of 4 to 8 cm and the depth of about 7.6 to 12.7 cm. With the center tooth of the visor as the center point, the visor is gently bent to 360 degrees and put into the customer's pocket without any obstacles.

[0098] The above is a detailed description of the embodiments of the present invention, but the present invention is not limited to the above embodiments. Various changes can be made within the knowledge of ordinary technicians in the relevant technical field without departing from the purpose of the present invention. In addition, the embodiments of the present invention and the features in the embodiments can be combined with each other without conflict.

Claims

1. A cap visor, characterized in that: The visor piece includes an elastic flat plate, wherein the raw material for preparing the elastic flat plate includes TPEE.

2. The visor according to claim 1, characterized in that: The thickness of the elastic flat plate is 0.8 mm to 2.5 mm; preferably, the height of the center point of the brim piece is 0 cm to 7 cm.

3. The visor according to claim 1, characterized in that: The preparation material of the elastic plate further includes linear polyethylene material, ultraviolet absorber, light stabilizer and color powder; preferably, the ultraviolet absorber includes 2,4-dihydroxybenzophenone; preferably, the light stabilizer includes high molecular weight triazine-piperidine condensate.

4. A method for preparing the cap visor according to any one of claims 1 to 3, characterized in that: The preparation method comprises: The prepared material including the TPEE is preheated, injection molded, and cooled to obtain the cap visor.

5. The preparation method according to claim 4, characterized in that: The preheating treatment is to dry the raw materials by infrared rays; preferably, the temperature of the preheating treatment is 100-110°C; preferably, the preheating time is 3-5h; preferably, the cooling treatment time is 15-20s; preferably, the temperature of the injection molding process is 190-260°C.

6. The preparation method according to claim 4, characterized in that: The injection molding process includes the steps of injection molding, pressure holding and melt molding.

7. The preparation method according to claim 6, characterized in that: The speed of the injection process is 25% to 75%; preferably, the pressure of the injection process is 100 to 155 bar; preferably, the stroke of the injection process is 8 to 42 mm; preferably, the time of the injection process is 3 to 5 seconds.

8. The preparation method according to claim 6, characterized in that: The pressure-maintaining treatment is performed for 4 to 5 seconds. Preferably, the pressure of the pressure-maintaining treatment is 140 to 155 bar.

9. The preparation method according to claim 6, characterized in that: The speed of the melt adhesive treatment is 15% to 95%; preferably, the pressure of the melt adhesive treatment is 35 to 165 bar; preferably, the thickness of the melt adhesive treatment is 4 to 60 mm.

10. A hat brim, characterized in that: The invention comprises the visor piece according to any one of claims 1 to 3 and an outer cover covering the visor piece.

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