Composite Packaging Container Structure and Molding Method (Part 2)

Abstract

A composite packaging container structure and molding method are disclosed, comprising a composite packaging container consisting of a preform and a body, wherein the preform and the body are made of different materials, the preform has a bottle mouth and a connecting part, and the body has at least one opening on its side. The preform and the body are placed and fixed in a mold, and the mold is used to limit the range. The connecting part is blow-molded and expanded so that its upper part forms a bottle shoulder and its lower part is connected to the inside of the body to form a body. The connecting part further fills the opening and forms a filling part at the opening.

Description

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[0006]

[0001] The present invention relates to a composite packaging container structure and a forming method, particularly to a composite packaging container structure and a forming method capable of producing a composite packaging container with the characteristics of composite materials and a stable structure. Prior Art

[0002] By the way, the decomposition of plastics has always been a major problem during recycling. In particular, plastics discarded into the sea are often difficult to decompose and affect marine life. Moreover, the weathering of plastics also produces a large amount of plastic particles that affect the biosphere. Most packaging containers often use a single material such as plastic mainly to avoid manufacturing troubles. Using composite materials can obtain the benefits of multiple materials and reduce the disadvantages brought by single materials. However, when using composite materials, the stability between materials should be ensured to avoid separation during use.

[0003] Therefore, in view of this, the inventor has come up with the idea of the invention, and then designed it based on years of experience. After extensive discussions and sample tests, and multiple corrections and improvements, the present invention is finally introduced. Summary of the Invention Problems to be Solved by the Invention

[0004]

[0005] The present invention provides a composite packaging container structure and a forming method, which have the characteristics of composite materials and a stable structure, and are preferably suitable for use and recycling. Means for Solving the Problems

[0006]

[0007] The present invention provides a composite packaging container structure, which includes a composite packaging container. Among them, the composite packaging container is composed of a preform and a bottle body. The preform and the bottle body are made of different materials. The preform has a bottle mouth and a joint part. At least one opening is provided on the side surface of the bottle body. The joint part is blow-molded and expanded so that its upper part forms a bottle shoulder and its lower part is combined with the inner side of the bottle body to form a bottle body main body. The joint part further fills the opening and forms a filling part at the opening.

[0008] The present invention provides a method for forming a composite packaging container, which comprises the following steps: forming a preform, the preform having a bottle mouth and a joint portion, and preheating the preform with a heating device to soften the joint portion, and forming a bottle body made of a material different from that of the preform, at least one opening being provided on the side surface of the bottle body, placing the preform and the bottle body into a mold and fixing them, blowing air into the preform to expand and combine the joint portion, using the restricted range of the mold to form a bottle shoulder on the upper part of the joint portion, the lower part of the joint portion forming a bottle body main body inside the bottle body, and the joint portion further expanding to fill the opening to form a filling portion, thereby completing a composite packaging container.

[0009] The main purpose of the present invention is that after the joint portion is blow-molded and expanded to combine, the bottle shoulder is respectively formed and the bottle body main body is formed inside the bottle body, and the filling portion is snapped into the opening, so that the combination of the preform and the bottle body is firm and not easily separated by external force. Separating the preform and the bottle body can be recycled respectively, reducing the use of single materials while improving the resource recycling efficiency, and the bottle body main body is formed by the lower part of the joint portion, so that the bottle body is located near the bottom of the preform and can be easily removed.

[0010] Other objects, advantages and novel features of the present invention will become more apparent from the following detailed description and the related drawings. Effects of the Invention

[0011] Brief Description of the Drawings

[0012]

[0013] 〔Fig. 1〕is a three-dimensional view of the composite packaging container of the present invention.

[0014] 〔Fig. 2〕is an exploded view before the formation of the composite packaging container of the present invention.

[0015] 〔Fig. 3〕is a flowchart of the method for forming the composite packaging container of the present invention.

[0016] 〔Fig. 4〕is a schematic view of the preheating of the preform of the present invention.

[0017] 〔Fig. 5〕is a schematic view of blowing air into the preform and the bottle body placed in the mold of the present invention.

[0018] 〔Fig. 6〕is a schematic view of the joint portion after expansion and being adhered to the bottle body and the mold of the present invention.

[0019] Figure 7 is a cross-sectional view and a partial enlarged cross-sectional view of the present invention.

[0020] Figure 8 is a schematic diagram of another embodiment of the present invention. Implementation

[0021] To enable your review committee to have a better understanding of the purpose, features, and effects of this invention, the following is a detailed description in conjunction with the accompanying drawings:

[0022] Please refer to Figure 1 and Figure 2 in conjunction with Figure 7. The present invention provides a composite packaging container structure, which includes a composite packaging container (1). The composite packaging container (1) is composed of a preform (10) and a body (20). The preform (10) and the body (20) are made of different materials. The preform (10) has a bottle mouth (11) and a connecting part (12). The side of the body (20) is provided with at least one opening (21). The connecting part (12) is blow-molded and expanded so that its upper part forms a bottle shoulder (121) and its lower part is connected to the inside of the body (20) to form a body body (122). The connecting part (12) further fills the opening (21) and forms a filling part (123) at the opening (21).

[0023] With the above structure, the joint (12) is blow-molded and expanded to form the bottle shoulder (121) and the bottle body (122) is formed on the inside of the bottle body (20). The filling part (123) is inserted into the opening (21), so that the combination of the preform (10) and the bottle body (20) is stable and not easily separated by external force. The preform (10) and the bottle body (20) can be separated and recycled separately, reducing the use of a single material and improving the efficiency of resource recycling. The bottle body (122) is formed by the lower part of the joint (12), so that the bottle body (20) is located near the bottom of the preform (10) and can be removed more easily.

[0024] As shown in Figures 3 and 4, the present invention provides a method for forming a composite packaging container, which includes the following steps: forming a preform (10) having a bottle mouth (11) and a connecting part (12), preheating the preform (10) with a heating device (40) to soften the connecting part (12), and forming a bottle body (20) of a different material from the preform (10), wherein the side of the bottle body (20) has at least one opening (21). As shown in Figure 5, the preform (10) is formed into a bottle body (20). The bottle body (20) is placed into a mold (30) and fixed. As shown in Figures 6 and 7, the preform (10) is blown with air to expand and join the joint (12). The mold (30) is used to limit the range so that the upper part of the joint (12) forms a bottle shoulder (121), and the lower part of the joint (12) forms a bottle body (122) inside the bottle body (20). The joint (12) further expands to fill the opening (21) to form a filling part (123), thereby completing a composite packaging container (1).

[0025] Therefore, by using the above-mentioned composite packaging container molding method, the preform (10) of different materials can be combined with the bottle body (20). When recycling, the bottle body (20) and the preform (10) can be separated to recycle different materials. For example, the preform (10) can be made of plastic, which is better for loading liquids. The bottle body (20) can be made of non-plastic to reduce plastic use. The composite properties of the composite packaging container (1) can achieve better use effect, giving full play to the advantages of both and avoiding their disadvantages.

[0026] As shown in Figures 6 and 7, the present invention provides a composite packaging container structure and molding method, wherein the thickness of the bottom of the bottle mouth (11) is greater than the thickness of the expansion joint (12).

[0027] The present invention provides a composite packaging container structure and molding method, wherein the surface of the bottle body (20) is treated to make it more robust, smooth and waterproof.

[0028] The present invention provides a composite packaging container structure and molding method, wherein the preform (10) is made of petrochemical plastic or biodegradable plastic.

[0029] The present invention provides a composite packaging container structure and molding method, wherein the preform (10) can be made of PET or PEF.

[0030] The present invention provides a composite packaging container structure and molding method, wherein the preform (10) is translucent, allowing the user to see the contents and remaining amount of the composite packaging container (1) through the bottle shoulder (121) and the filling part (123).

[0031] The present invention provides a composite packaging container structure and molding method, wherein the bottle body (20) is made of recycled fiber.

[0032] As shown in Figure 8, which is another embodiment of the present invention, the bottle body (20) is made of paper. The shape, number, size, arrangement direction and position of the opening (21) can be customized according to the user's needs, and the filling part (123) can also be changed according to the nature of the opening (21), making the appearance of the composite packaging container (1) more varied and more aesthetically pleasing.

[0033] The present invention provides a composite packaging container structure and molding method, wherein the bottle body (20) is made of biodegradable material, which is natural, renewable and non-toxic, and easy to dispose of.

[0034] The above description is merely one preferred embodiment of the present invention and should not be construed as limiting the scope of the present invention; that is, all equivalent changes and modifications made in accordance with the claims of the present invention should still fall within the scope of the present invention.

[0035]

[0036] This invention includes:

[0037] (1): Composite Packaging Container

[0038] (10): Preform

[0039] (11): Bottle mouth

[0040] (12): Joint

[0041] (121): Bottle shoulder

[0042] (122): Bottle body

[0043] (123): Filling part

[0044] (20): Bottle body

[0045] (21): Opening

[0046] (30): Mold

[0047] (40): Heating device

Claims

1. A composite packaging container structure, comprising a composite packaging container, wherein: The composite packaging container consists of a preform and a body, the preform and the body being made of different materials. The body is made of recycled fiber, paper, or biodegradable material. The preform has a bottle mouth and a connecting part. The body has at least one opening on its side. The connecting part is blow-molded and expanded so that its upper part forms a bottle shoulder and its lower part is joined to the inside of the body to form a bottle body. The connecting part further fills the opening and forms a filling part at the opening.

2. The composite packaging container structure as described in claim 1, wherein, The preform is made of petrochemical plastic or biodegradable plastic.

3. The composite packaging container structure as described in claim 2, wherein, The preform can be made of PET or PEF.

4. The composite packaging container structure as described in claim 1, wherein, The preform is translucent.

5. A method for forming a composite packaging container, comprising the following steps: forming a preform having a bottle mouth and a joint, preheating the preform with a heating device to soften the joint, and forming a bottle body of a different material from the preform, the bottle body being made of recycled fiber, paper, or biodegradable material, the bottle body having at least one opening on its side, placing the preform and bottle body into a mold and fixing them, blowing air into the preform to cause the joint to expand and join, using the mold to limit the area so that the upper part of the joint forms a bottle shoulder, the lower part of the joint forms a bottle body body inside the bottle body, and the joint further expands to fill the opening to form a filling part, thereby completing a composite packaging container.

6. The method for forming a composite packaging container as described in claim 5, wherein, The preform is made of petrochemical plastic or biodegradable plastic.

7. The method for forming a composite packaging container as described in claim 6, wherein, The preform can be made of PET or PEF.

8. The method for forming a composite packaging container as described in claim 5, wherein, The preform is translucent.

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