Production process of cosmetic bottle body

Abstract

The present invention discloses a production process for a cosmetic bottle body, which relates to the cosmetic bottle field. The key points of the technical solution are as follows: the bottle body is transparent, and a plurality of ribs are integrally formed on the inner peripheral wall of the bottle body. The plurality of ribs are distributed in a circular array with the center line of the bottle body as the axis, and the upper and lower ends of the ribs extend to the top surface and the bottom surface of the bottle body respectively. The present invention arranges ribs on the inner side of the bottle body, so that the outer peripheral wall of the bottle body is relatively smooth, thereby ensuring the comfort of people when holding it. The ribs increase the overall strength of the bottle body, making the bottle body less likely to deform. The plurality of ribs are distributed in a circular array with the center line of the bottle body as the axis, making the bottle body more structurally strong and ensuring the overall aesthetics of the bottle body. Using raw materials such as PET, PP, PMMA, PETG, etc., the bottle body has good gloss, ensuring the overall aesthetics of the bottle body, and also has high toughness, ensuring the strength of the bottle body.

Description

Technical Field

[0001] The present invention relates to the field of cosmetic bottles, and more particularly to a production process for cosmetic bottle bodies. Background Art

[0002] With the development of social life, people pay more and more attention to their own image issues. People need to touch up their makeup at any time, so cosmetics have become one of the must-have items for daily outings.

[0003] Existing cosmetics are generally placed in cosmetic bottles for storage. Because cosmetics placed in bags will be squeezed by other objects, cosmetic bottles with higher structural strength are needed for protection. In order to improve the overall strength of the cosmetic bottles, some existing cosmetics will add reinforcing ribs on the outside of the bottle, and the reinforcing ribs are arranged along the height direction of the bottle body. The arrangement of the reinforcing ribs reduces the comfort of holding the entire bottle body.

[0004] Therefore, new solutions need to be proposed to solve this problem. Summary of the Invention

[0005] In view of the deficiencies in the prior art, the present invention aims to provide a cosmetic bottle body and a production process thereof.

[0006] The above technical objectives of the present invention are achieved through the following technical solutions: a cosmetic bottle body, including a transparent bottle body, a plurality of ribs integrally formed on the inner circumferential wall of the bottle body, and the plurality of ribs are distributed in a circular array with the center line of the bottle body as the axis, the upper end and the lower end of the ribs extend to the top surface and the bottom surface of the bottle body respectively, and the length of the ribs located on the bottom surface of the bottle body is greater than half the radius of the bottle body.

[0007] The present invention is further configured such that the arc angle between any two adjacent ribs and the center line of the bottle body is 15-45 degrees.

[0008] The present invention is further configured such that: the bottle body is made of transparent, translucent or opaque plastic.

[0009] A production process for a cosmetic bottle body comprises the following steps:

[0010] 1) Prepare ingredients: Dry the raw materials and then mix them to obtain injection molding materials;

[0011] 2) Injection molding: The injection molding material obtained in step 1) is injected into an injection mold and then cooled to form a tube embryo with ribs, and a tube tail is formed at the bottom of the tube embryo;

[0012] 3) Tail cutting: Cut off the tail of the tube embryo after step 2);

[0013] 4) Heating: The tube embryo processed in step 3) is heated at a temperature between 200°C and 220°C.

[0014] 5) Lengthening the tube embryo: stretching the tube embryo processed in step 4) to make its length meet the requirements;

[0015] 6) Blow molding: The tube blank processed in step 5) is placed in a blow molding mold, and compressed air is blown into the tube blank to form the finished product;

[0016] 7) Demolding and cooling: Separate the finished product processed in step 6) from the blow mold and place it in a cool place to cool.

[0017] The present invention is further configured as follows: the injection mold includes an injection core and two clamps, and an injection groove is provided on one side of the two clamps close to each other. The injection core is located in the injection grooves of the two clamps, and an injection hole connected to the injection groove is provided on the bottom surface of the clamp. The tube tail of the tube embryo is formed in the injection hole of the clamp, and the tube embryo is formed in the injection groove.

[0018] The present invention is further configured as follows: a plurality of rib grooves are provided on the outer peripheral wall of the injection core, the rib grooves are connected to one end of the injection core, and the number of the rib grooves is equal to the number of ribs on the bottle body.

[0019] The present invention is further configured such that the groove length of the rib groove is smaller than the length of the injection groove along the length direction of the injection core.

[0020] In summary, the present invention has the following beneficial effects:

[0021] 1. The setting of the ribs can increase the overall strength of the bottle, making it difficult for the bottle to deform when squeezed, thereby ensuring the safety of the cosmetics.

[0022] 2. When the entire bottle body is transparent or translucent, people can directly see the ribs inside the bottle body and the ribs are distributed in a circular array, which makes the overall structure and layering of the bottle body stronger and increases the aesthetics of the bottle body.

[0023] 3. The ribs are arranged inside the bottle body, so that the outer peripheral wall of the bottle body can remain smooth, thereby making the overall grip of the bottle body better and ensuring the comfort of people when holding the bottle body.

[0024] 4. Bottle body

[0025] 1. The one-piece injection-stretch-blow molding process eliminates joints on the bottle body, ensuring the smoothness of the outer wall and the overall strength of the bottle body. The production process is also consistent and efficient, meeting the requirements of mass production.

[0026] 2. The two-step injection-stretch-blow molding process (first, the tube preform is injected by the injection molding machine, cooled and formed, then the tube preform is heated by the stretch-blow-blow machine, the heated tube preform is placed in the blowing mold, and the tube preform is stretched and blown into high-pressure air to form the molding process), which is suitable for the requirements of multi-category and small-batch production. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 Schematic diagram of the structure of the bottle body in the present invention;

[0028] Figure 2 is a cross-sectional view of the bottle body of the present invention;

[0029] Figure 3 It is a schematic diagram of the partial structure of the clamping mold and the injection core in the present invention.

[0030] In the figure: 1. Bottle body; 2. Rib; 3. Label slot; 4. Injection core; 5. Clamp; 6. Injection slot; 7. Injection hole; 8. Rib groove; 9. Clamp; 10. Thread groove. DETAILED DESCRIPTION

[0031] The present invention is described in detail below with reference to the accompanying drawings and embodiments. Example 1

[0032] A cosmetic bottle body, such as Figure 1 and Figure 2 As shown, it includes a transparent bottle body 1, and a plurality of ribs 2 are integrally formed on the inner peripheral wall of the bottle body 1. The length direction of the plurality of ribs 2 is arranged along the height direction of the bottle body 1. The plurality of ribs 2 are distributed in a ring array with the center line of the bottle body 1 as the axis. The upper end and the lower end of the rib 2 extend to the top surface and the bottom surface of the bottle body 1 respectively. The length of the rib 2 located on the bottom surface of the bottle body 1 is greater than half of the radius of the bottle body 1. The arrangement of the rib 2 makes the overall strength of the bottle body 1 higher and the deformation resistance enhanced, so that when the bottle body 1 is squeezed, the bottle body 1 is not easily deformed. The rib 2 extends to the bottle The top and bottom surfaces of the bottle body 1 also improve the structural strength of the top and bottom surfaces of the bottle body 1, and the length of the ribs 2 located at the bottom of the bottle is longer, which further ensures the strength of the bottom surface of the bottle body 1. The bottle body is transparent, so that people can directly see the ribs 2 located in the bottle body 1 and several ribs 2 are distributed in a circular array, so that the overall structure and layering of the bottle body 1 are strong, which increases the aesthetics of the bottle body 1. The ribs 2 are arranged on the inner side of the bottle body 1, so that the outer wall of the bottle body 1 is relatively smooth, thereby ensuring the feel of holding the bottle body 1 and ensuring the comfort of people when holding it.

[0033] like Figure 2As shown, the curvature between any two adjacent ribs 2 and the center line of the bottle body 1 is 15-45 degrees, the number of ribs 2 provided on the bottle body 1 is 12 and the ribs 2 are evenly distributed in an annular array, and the ribs 2 are provided in 12, so that the bottle body 1 has good structural strength, and the top and bottom surfaces of the bottle body 1 both present staggered patterns, so that the bottle body 1 as a whole has good aesthetics, and a label groove 3 spanning three ribs 2 is provided on the outer peripheral wall of the bottle body 1, and the width direction of the label groove 3 is arranged along the circumference of the bottle body 1 and the curvature between the two inner walls of the label groove 3 and the axis of the bottle body 1 is 100 degrees, and the length of the label groove 3 along the height direction of the bottle body 1 is less than half the height of the bottle body 1. The label groove 3 is provided on the bottle body 1 to facilitate production personnel to stick the cosmetic bottle label on the bottle body 1, and the label The label slot 3 is set on the bottle body 1 and occupies a small area, so that the label set on the bottle body 1 has little effect on the overall aesthetics of the bottle body 1. The bottle body 1 is made of transparent plastic, and the transparent plastic can be PETG material, acrylic material, PP material, PET material, etc. Preferably, in this embodiment, the transparent plastic is PETG material. PETG material has good toughness, which ensures the impact resistance of the bottle body 1 and the overall strength of the bottle body 1. The chemical properties of PETG are relatively stable, which makes the bottle body 1 not easy to react with other substances, thereby ensuring the overall life of the bottle body 1. PETG has the same transparency as glass and a density close to that of glass, and the PETG material has good glossiness, thereby also ensuring a certain degree of aesthetics for the overall beauty of the bottle body 1. Example 2

[0034] A production process for cosmetic bottle body, such as Figure 3 As shown, the following steps are included:

[0035] 1) Prepare ingredients: Dry the raw materials and then mix them to obtain injection molding materials;

[0036] 2) Injection molding: The injection molding material obtained in step 1) is injected into an injection mold and then cooled to form a tube embryo with ribs 2. A tube tail is formed at the bottom of the tube embryo, and a threaded portion is formed at the top of the tube embryo. After injection molding, the overall shape of the tube embryo is similar to that of a test tube.

[0037] 3) Tail cutting: Cut off the tail of the tube embryo after step 2);

[0038] 4) Heating: The tube embryo processed in step 3) is heated at a temperature between 200°C and 220°C.

[0039] During the heating process, the threaded portion is heated to make the entire tube easier to blow and stretch.

[0040] 5) Lengthening the tube embryo: stretching the tube embryo processed in step 4) to make its length meet the requirements;

[0041] 6) Blow molding: The tube blank processed in step 5) is placed in a blow molding mold, and compressed air is blown into the tube blank to form the finished product;

[0042] 7) Demolding and cooling: Separate the finished product processed in step 6) from the blow mold and place it in a cool place to cool.

[0043] The injection mold includes a core 4 and two clamps 5. The two clamps 5 are provided with an injection groove 6 on one side close to each other. The cross section of the injection groove 6 is semicircular. The core 4 is located in the injection groove 6 of the two clamps 5. Two clamps 9 are provided between the clamps 5 and the core 4. The two ends of the clamp 9 are respectively pressed against the core 4 and the clamp 9. A transmission device for driving the clamp 9 to move is provided on the outer peripheral wall of the clamp 9. A threaded groove 10 connected to the injection groove 6 is provided on the two clamps 9. The threaded groove 10 and the clamp The top surface and the bottom surface of 9 are connected and the two clamping blocks 9 jointly clamp the injection core 4 in the two threaded grooves 10. The bottom surface of the clamping mold 5 is provided with an injection hole 7 connected to the injection groove 6. The tail of the tube embryo is formed in the injection hole 7 of the clamping mold 5. The tube embryo is formed as a whole between the injection core 4 and the groove wall of the injection groove 6. A plurality of rib grooves 8 are provided on the outer peripheral wall of the injection core 4. The groove length of the rib groove 8 is less than the length of the injection groove 6 along the length direction of the injection core 4. The rib groove 8 is connected to the bottom end of the injection core 4 and the rib groove 8 is connected to the bottle body 1. The number of ribs 2 is equal. During the process of injecting the tube embryo, the production personnel put the two clamps 5 and the two clamps 9 tightly together, so that the thread groove 10 is connected with the injection groove 6. At this time, the injection core 4 is extended into the injection groove 6 from the thread groove 10 on the clamp 9. The shape of the space between the two injection grooves 6 and the outer peripheral wall of the injection core 4 is the same as the shape of the tube embryo. The injection material is injected from the injection hole 7, so that the injection material fills the space between the injection core 4 and the groove wall of the injection groove 6. The injection molding material in the rib groove 8 forms the rib 2 on the tube embryo, and the injection molding material injected into the two thread grooves 10 forms the threaded portion of the tube embryo. Because one end of the rib groove 8 on the injection core 4 is connected to the bottom surface of the injection core 4, the injection core 4 is pulled upward from between the two clamping films after the injection molding material cools. At this time, the injection core 4 moves along the length direction of the rib 2, so that the injection core 4 can be smoothly pulled out of the thread groove 10 without destroying the shape of the rib 2, and a tube embryo with a tube tail is formed between the two clamping molds 5 and the two clamping blocks 9.

[0044] After the production staff separates the two clamps 5, the tube embryo is separated from the injection mold. At this time, the tube embryo is clamped between the two clamps 9. Because the threaded part on the tube embryo is clamped in the thread groove 10, the tube embryo is not easy to separate from the two clamps 9. The production staff drives the clamps 9 to move by the driving transmission device, so that the tube embryo enters the next process. After the tube embryo has gone through the processes of tail shearing, heating, stretching the tube embryo, blow molding and demolding, the production staff separates the two clamps 9, so that the finished part is separated from the clamps 9. The bottle body 1 is made of an integrated injection-stretching-blowing molding process, so that there is no connection on the bottle body 1, which ensures the smoothness of the outer wall of the bottle body 1 and the overall strength of the bottle body 1, and the production process has good consistency and high production efficiency, which meets the requirements of mass production and ensures the overall production efficiency of the bottle body 1. Example 3

[0045] The difference between Example 3 and Example 2 is that when the tube embryo after injection molding is directly cooled and formed in the injection mold, the production personnel directly separate the tube embryo from the two clamping blocks 9 after the tube embryo is cooled, so that the tube embryo can be taken out of the injection mold. After the tube embryo undergoes the tail cutting step, the production personnel place the tube embryo in a plastic box for storage and standby. The production personnel can place the stored tube embryos in different stretch blow blow molding machines according to customer needs for heating, stretching and blow molding processes. The shapes of the finished parts blown by different stretch blow blow molding machines are different, so that the shape of the finished parts can meet the needs of different customers and is suitable for multi-category and small batch production requirements.

[0046] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiment. All technical solutions based on the concept of the present invention are within the scope of protection of the present invention. It should be noted that for those skilled in the art, various improvements and modifications that do not depart from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A production process for a cosmetic bottle body, characterized by: The invention comprises a transparent bottle body (1), wherein a plurality of ribs (2) are integrally formed on the inner peripheral wall of the bottle body (1), wherein the plurality of ribs (2) are distributed in a ring array with the center line of the bottle body (1) as the axis, wherein the upper end and the lower end of the ribs (2) extend to the top surface and the bottom surface of the bottle body (1) respectively, and the length of the ribs (2) located on the bottom surface of the bottle body (1) is greater than half the radius of the bottle body (1); The production process of the bottle (1) comprises the following steps: 1) Prepare ingredients: Dry the raw materials and then mix them to obtain injection molding materials; 2) Injection molding: injecting the injection molding material obtained in step 1) into an injection mold, and then cooling it to form a tube embryo with ribs (2), and a tube tail is formed at the bottom of the tube embryo; 3) Tail cutting: Cut off the tail of the tube embryo after step 2); 4) Heating: The tube embryo processed in step 3) is heated at a temperature between 200°C and 220°C. 5) Lengthening the tube embryo: stretching the tube embryo processed in step 4) to make its length meet the requirements; 6) Blow molding: The tube blank processed in step 5) is placed in a blow molding mold, and compressed air is blown into the tube blank to form the finished product; 7) Demolding and cooling: Separate the finished product processed in step 6) from the blow mold and place it in a cool place to cool; The injection mold comprises an injection core (4) and two clamping molds (5), and an injection groove (6) is provided on one side of the two clamping molds (5) close to each other. The injection core (4) is located in the injection grooves (6) of the two clamping molds (5), and an injection hole (7) connected to the injection groove (6) is provided on the bottom surface of the clamping mold (5). The tail of the tube embryo is formed in the injection hole (7) of the clamping mold (5), and the tube embryo is formed in the injection groove (6).

2. The production process of a cosmetic bottle body according to claim 1, characterized in that: The arc angle between any two adjacent ribs (2) and the center line of the bottle body (1) is 15-45 degrees.

3. The production process of a cosmetic bottle body according to claim 2, characterized in that: A label groove (3) spanning three ribs (2) is provided on the outer peripheral wall of the bottle body (1); the length of the label groove (3) along the height direction of the bottle body (1) is less than half the height of the bottle body (1).

4. The production process of a cosmetic bottle body according to claim 1, characterized in that: The bottle body (1) is made of transparent plastic.

5. The production process of a cosmetic bottle body according to claim 1, characterized in that: A plurality of rib grooves (8) are provided on the outer peripheral wall of the injection core (4), the rib grooves (8) are connected to one end of the injection core (4), and the number of the rib grooves (8) is equal to the number of the ribs (2) on the bottle body (1).

6. The production process of a cosmetic bottle body according to claim 5, characterized in that: The groove length of the rib groove (8) is less than the length of the injection groove (6) along the length direction of the injection core (4).

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