Composite packaging container structure and manufacturing process thereof

Abstract

The present invention provides a composite packaging container structure and a manufacturing method comprising a composite packaging container, wherein: the composite packaging container consists of a preform and a body, the preform and the body are made of different materials, the preform has an opening, a connecting part and a sealing part, at least one opening is provided in the side surface of the body, the opening is attached to the opening of the body, the connecting part is expanded by blow molding and connected to the inside of the body, and the sealing part is attached to the outer surface of the opening.

Description

Technical field The present invention claims a domestic priority basis, namely Taiwanese patent application No. 114100767 (filing date: January 8, 2025), which is mentioned in advance here. The present invention relates to a composite packaging container structure and a manufacturing method, in particular a composite packaging container structure and a manufacturing method therefor, which are capable of producing composite packaging containers with the properties of composite materials and a stable structure. State of the art Composite materials often allow for the combination of properties from different materials; for example, more environmentally friendly materials can be used to replace the surface of the packaging and be recycled separately. However, the use of composite materials means that greater attention must be paid to the stability between the materials to prevent separation during use. Therefore, the inventor of the present invention took this into account, considered the idea of ​​the invention, then designed it using many years of experience, and after numerous discussions and trials with samples as well as multiple revisions and improvements, produced the present invention. Content of the invention Technical problem to be solved: The present invention provides a composite packaging container structure and a manufacturing process, wherein the structure produced by the manufacturing process can have the properties of composite materials and a stable structure and is therefore more advantageous for use and recycling. Technical features for solving the problem: The present invention provides 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 are made of different materials, the preform has an opening, a connecting part and a sealing part, at least one opening is provided in the side surface of the body, the opening is attached to the opening of the body, the connecting part is expanded by blow molding and connected to the inside of the body, and the sealing part is attached to the outer surface of the openings. The technical features for solving the problem are as follows: The present invention provides a method for forming a composite packaging container, comprising the following steps: arranging and fixing a body in a mold; preheating a mold to a preheating temperature, then inserting a preform into the mold to heat the preform, the preform having an opening and a connecting part; performing a pre-stretching-blowing operation on the preform by means of a pull rod; the pull rod blows a first gas into the preform, causing the connecting part to expand towards the inner surface of the body to jointly form a bottle-shaped container; first releasing the first gas from the bottle-shaped container, then blowing a second gas into the bottle-shaped container, thereby forming the connecting part, which expands and joins with the inside of the body to form a composite packaging container;and releasing the second gas from the composite packaging container and removing the pull rod from the mold, followed by removing the composite packaging container.; The main purpose of the present invention is that the connecting part is expanded by blow molding and bonded to the inside of the body, and the sealing part is attached to the outer surface of the opening, thereby making the connection between the preform and the body stable and resistant to separation by external forces. When recovering the composite packaging container structure, only the preform and the body need to be separated and recycled separately, thus making the recoverable component a single unit, reducing recovery costs, and increasing the resource recovery rate. Further purposes, advantages and the novel properties of the present invention will become clearer from the following detailed description and the accompanying drawings. Brief description of the drawings Fig. 1 is a perspective view of the composite packaging container of the present invention. Fig. 2 is an exploded view of the composite packaging container of the present invention before molding. Fig. 3 is a schematic representation of the insertion of the body and the preform into the mold for blow molding in the present invention. Fig. 4 is a schematic representation of how the connecting part attaches to the body and the mold after expansion in the present invention. Fig. 5 is a sectional view of the present invention. Fig. 6 is a schematic representation of a further embodiment of the present invention. Fig. 7 is a schematic representation of a further embodiment of the present invention. Fig. 8 is a flowchart of the molding process for the composite packaging container of the present invention. Example(s) of implementation In order for the esteemed examination committee to better understand and become familiar with the purpose, features and effect of the present invention, the following will be explained in detail in conjunction with the brief description of the drawings: First, with reference to Fig. 1, Fig. 2 in conjunction with Fig. 5, it is seen that the present invention provides a composite packaging container structure comprising a composite packaging container 1, wherein: the composite packaging container 1 consists of a preform 10 and a body 20, the preform 10 and the body 20 are made of different materials, the preform 10 has an opening 11, a connecting part 12 and a sealing part 121, at least one opening 21 is provided in the side surface of the body 20, the opening 11 is attached to the opening of the body 20, the connecting part 12 is expanded by blow molding and is connected to the inside of the body 20, and the sealing part 121 is attached to the outer surface of the opening 21. In this embodiment, the material of preform 10 can be a biomaterial or a biodegradable plastic, but the present invention is not limited by this. Here, the biomaterial is preferably PEF (polyethylene furanoate) and the biodegradable plastic is preferably PLA (polylactic acid); the materials chosen in this embodiment have the property of degrading in the natural environment and will not have any negative impact on the environment. In this embodiment, the material of the body 20 can be a recyclable fiber, paper, or a biodegradable plastic, but the present invention is not limited by this. This reduces dependence on traditional plastic materials, and the materials chosen in this embodiment have the property of degrading in the natural environment and will not have any negative impact on the environment. In this embodiment, the preform 10 is translucent, so that when the sealing part 121 is attached to the outer surface of the opening 21, the user can observe the condition in the container through the opening 21 and at the same time a sealing effect exists, so that the user can see the contents of the composite packaging container 1 and its remaining quantity through the sealing part 121. Due to the structure described above, the connecting part 12 is expanded by blow molding and connected to the inside of the body 20, causing the sealing part 121 to snap into the opening 21 and form a protruding structure on its outer surface. This ensures a stable connection between the preform 10 and the body 20, preventing it from being easily separated by external forces. When recovering the composite packaging container 1, only the preform 10 and the body 20 need to be separated and recycled separately, resulting in a uniform recovery component, reducing recovery costs, and increasing the resource recovery rate. As can be seen from Fig. 4 and Fig. 5, the thickness of the bottom of the opening 11 is greater than the thickness of the connecting part 12 after its extension. The surface of the body 20 is treated to make it stronger, smoother, and more water-repellent. Furthermore, the surface of the body 20 has ribs 22 to increase its structural strength and resistance to deformation, and these ribs also increase surface friction when held by the user, preventing it from slipping easily. As shown in Figures 5 and 7, these are further embodiments of the present invention, wherein the material of the body 20 is paper and is therefore better suited for printing, since the paper body 20 can easily display text, patterns, markings, or advertising by printing or similar methods. Therefore, a more diverse visual effect can be achieved with the body 20 in terms of colors, patterns, text, markings, and advertising. It is also not a problem that the surface of the body 20 has vertical or inclined ribs 22 to increase slip resistance. Please see Fig. 8, the present invention provides a method for forming a composite packaging container, comprising the following steps: In step S10, the body 20 is arranged and fixed in the form 30. The material of the body 20 can be a recyclable fiber, paper, or a biodegradable plastic, but the present invention is not limited by this. In step S20, the mold 30 is preheated to a preheating temperature between 20°C and 80°C. Subsequently, the heated preform 10 is inserted into the mold 30, the preform 10 having an opening 11 and a connecting part 12. The material of the preform 10 can be a biomaterial or a biodegradable plastic, but the present invention is not limited by this. In step S30, a pull rod performs a pre-stretching and blowing process on the preform 10. This pre-stretching and blowing process involves lowering the pull rod into the mold 30 while simultaneously introducing the first gas into the opening 11 of the preform 10. In step S40, the first gas is blown into the preform 10, causing the connecting part 12 to expand towards the inner surface of the body 20, together forming a bottle-shaped container. The temperature of the first gas is between 30°C and 80°C. The introduction of the first gas heats the preform 10, causing it to expand and the connecting part 12 to fit snugly against the body 20. In step S50, the first gas is released from the bottle-shaped container. Then, a second gas is blown into the bottle-shaped container, causing the connecting part 12 to expand and bond with the inside of the body 20 to form the assembled packaging container 1. The temperature of the second gas is between 0°C and 30°C. The introduction of the second gas cools the preform 10, which allows the expanded preform 10 to be retained. This, in turn, leads to the preform 10 and the body 20 being assembled and formed to become the assembled packaging container 1. In step S60, the second gas is released from the composite packaging container 1 and the pull rod is removed from the mold 30; subsequently, the composite packaging container 1 is removed. By sequentially carrying out steps S10 to S60, the composite packaging container 1 of the present invention can finally be obtained, which has structural stability and properties such as convenient recycling. Therefore, applying the above-described method for forming a composite packaging container allows the preform 10 and the body 20, made of different materials, to be separated during the recovery process, enabling the recycling of the different materials. For example, the preform 10 can be made of a biomaterial that preferably absorbs liquids, and the body 20 can consist of recycled fiber to reduce plastic, thereby significantly improving the plastic reduction effect and allowing the composite packaging container 1 to achieve a better overall performance. However, the above is only a preferred embodiment of the present invention and cannot limit the scope of implementation of the present invention; that is to say, all equivalent changes and modifications made in accordance with the scope of the claims of the present invention should still fall within the scope covered by the patent of the present invention. Reference symbol list: 1 composite packaging container 10 preform 11 mouth 12 connecting part 121 sealing part 20 body 21 opening 22 rib 30 shape S10~S60 step QUOTES INCLUDED IN THE DESCRIPTION This list of documents cited by the applicant was automatically generated and is included solely for the reader's convenience. The list is not part of the German patent or utility model application. The DPMA accepts no liability for any errors or omissions. Cited patent literature TW 114100767

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Claims

A composite packaging container structure comprising a composite packaging container, characterized in that the composite packaging container consists of a preform and a body, wherein the preform and the body are made of different materials, the preform has an opening, a connecting part and a sealing part, at least one opening is provided in the side surface of the body, the opening is attached to the opening of the body, the connecting part is expanded by blow molding and is connected to an inside of the body, and the sealing part is attached to an outside surface of the openings. Composite packaging container structure according to claim 1, characterized in that the material of the preform is a biomaterial or a biodegradable plastic. Composite packaging container structure according to claim 1, characterized in that the material of the body is a recyclable fiber, paper or a biodegradable plastic. Composite packaging container structure according to claim 1, characterized in that the preform is translucent. A method for forming a composite packaging container, characterized in that it comprises the following steps: arranging and fixing a body in a mold; preheating the mold to a preheating temperature, then inserting a heated preform into the mold, the preform having an opening and a connecting part; performing a pre-stretching blowing operation on the preform by means of a tension rod; blowing a first gas into the preform at the opening, causing the connecting part to expand towards the inner surface of the body to jointly form a bottle-shaped container; first releasing the first gas from the bottle-shaped container, then blowing a second gas into the bottle-shaped container, thereby forming the connecting part, which expands and joins with the inside of the body to form a composite packaging container;and releasing the second gas from the composite packaging container and removing the pull rod from the mold, followed by removing the composite packaging container. Method for forming a composite packaging container according to claim 5, characterized in that the pre-stretch blow molding process comprises lowering the drawbar into the mold while simultaneously introducing the first gas into the preform. Method for forming a composite packaging container according to claim 5, characterized in that the preheating temperature of the mold is between 20°C and 80°C. Method for forming a composite packaging container according to claim 5, characterized in that the temperature of the first gas is between 30°C and 80°C. Method for forming a composite packaging container according to claim 5, characterized in that the temperature of the second gas is between 0°C and 30°C. Method for forming a composite packaging container according to claim 5, characterized in that the material of the preform is a biomaterial or a biodegradable plastic.

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