TWM605568U - Paper straw - Google Patents

Abstract

The paper straws provided by this creation contain technical means for strength, temperature resistance, water resistance, and to increase the beauty of the paper straws, so as to obtain better resistance to temperature and water, so as to increase the degree of replacement of the paper straws with plastic straws. , And provide users with a good use effect.

Description

Paper straw

This creation is related to straws, especially a paper straw.

In order to reduce the negative impact of petrochemical products on the environment, various environmentally-friendly alternative materials are used in the manufacture of straws. For example, stainless steel, glass, etc. are used as reusable straw manufacturing materials, polylactic acid, paper or others Biodegradable materials are usually manufactured as disposable straws.

Among them, paper materials have the advantages of being easier to obtain and having better selectivity than other materials, but due to the inherently poor resistance to moisture and weak strength of paper, it is still difficult to apply after being made into paper straws. When drinking beverages that contain solids or beverages that need to be stirred, and when used in high-temperature beverages, the rolls of the paper straws are easily separated, causing them to lose the straw function and cannot be used by users.

Therefore, the main purpose of this creation is to provide a paper straw that has better resistance to temperature and water, so as to increase the degree of replacement of the paper straw with the plastic straw and provide users with a good use effect.

The paper straws provided by this creation include technical means for strength, temperature resistance, water resistance, and increase the beauty of the paper straws. Among them, in order to improve the strength of the paper straws, this creation system In the tubular body of a paper straw made by a molding method in which a plurality of paper sheets are wound on a core rod as a mold, the adjacent paper sheets that are overlapped with each other are first overlapped with each other without being completely overlapped, and The overlapping range of each other is related to the number of paper sheets constituting the main body of the paper straw. In particular, when the number of paper sheets constituting the paper straw is a natural number N, the overlapping range of adjacent paper sheets That is 1-1/N, so that the paper sheets interlaced with each other have the best mechanical strength.

Secondly, the system can further make the tubular body on the core rod being wound and formed receive an external force applied to the direction of the position of the core rod to press the tubular body during forming to ensure the formation of the tubular body. Most of the paper sheets of the main body are tightly overlapped with each other.

Furthermore, before the majority of the paper sheets constituting the tubular body are wound, they are coated with polyvinyl acetate as an adhesive on both sides of the paper sheets that are in a laminated state and located in the middle position, so that they can be rolled When it is wound around the core rod and pressed by an external force, it can further ensure the tightness of the adhesion of the paper sheets to each other.

Specifically, when the number of paper sheets constituting the tubular body is three, that is, a first paper sheet located in the inner layer, a second paper sheet located in the outer layer, and a third paper sheet located between the inner layer and the outer layer. At this time, after the adhesive is applied to both sides of the third paper sheet, an adhesive layer is formed on both sides of the third paper sheet for bonding with other paper sheets.

Wherein, before applying the adhesive, an external force is applied to the third paper sheet, so that the part to be applied on the third paper sheet has a force to expand the fiber voids inside the third paper sheet to accommodate the adhesive to be coated .

Further, after the paper straw is manufactured through the above process, it is placed in a temperature environment of about 120 degrees Celsius for about 30 minutes to improve the temperature resistance of the paper straw and avoid the adhesive layer During use, due to the thermal energy of the beverage, the loss of hydrolysis or peeling occurs, so as to extend the use time of the paper straw in high-temperature beverages.

In addition, in order to change the appearance of the straws, the paper straws provided by this creation are printed on the paper sheet as the outer layer of the paper straws, printed with edible ink, and coated on it for consumption after the printing is completed The varnish is applied to form an isolation layer to ensure that the printed pattern will not be dissolved out by the beverage in a short time.

(10): Paper straw

(20): Tubular body

(21): The first piece of paper

(22): Second paper

(23): The third piece of paper

(30): Adhesive layer

(40): Pattern layer

(50): Isolation layer

(61): Mandrel

(62): Belt

(621): Rolling part

(70): Oven

Figure 1 is a perspective view of a preferred embodiment of the invention.

Fig. 2 is a cross-sectional view of a preferred embodiment of the present creation along the line 2-2 in Fig. 1.

FIG. 3 is a partial enlarged view of the circled marked area in FIG. 2 in a preferred embodiment of this creation.

Fig. 4 is a schematic diagram of a preferred embodiment of the creation of the paper interleaving.

Figure 5 is a schematic diagram of the manufacturing process of a preferred embodiment of the present invention.

Fig. 6 is a schematic diagram of part of the manufacturing process of a preferred embodiment of the present invention.

First of all, please refer to Figures 1 to 3. The paper straw (10) provided in a preferred embodiment of this creation mainly includes a tubular body (20), two adhesive layers (30), A pattern layer (40) and an isolation layer (50).

The tubular body (20) is formed into a tubular shape with a plurality of long strips of paper interlaced and rolled up. In terms of specific structure, the tubular body (20) has a long strip and is located The first paper sheet (21) of the inner layer, a long strip of paper (22) located on the outer layer, and a strip between the first paper sheet (21) and the second paper sheet (22) The third paper (23).

Each of the adhesive layers (30) is respectively between the two sides of the third paper sheet (23) and the opposing first paper sheet (21) and the second paper sheet (22) to provide appropriate The next force makes the first A paper sheet (21) and the third paper sheet (23), and the second paper sheet (22) and the third paper sheet (23) are adhesively combined.

The pattern layer (40) is located on the outer side of the second paper sheet (22) opposite to the third paper sheet (23) to form corresponding patterns and patterns on the outer surface of the tubular body (20) , Words, signs, or others that can be perceived by human vision or touch.

The isolation layer (50) is wrapped on the outer surface of the tubular body (20), and the pattern layer (40) is sandwiched between the isolation layer (50) and the tubular body (20), To isolate the direct contact between the pattern layer (40) and the outside world.

The article structure of the paper straw (10) has been as described above, but in this embodiment, the manufacturing process should be described to fully explain the technically achievable effects.

To this end, please refer to Figure 4, as the paper sheet composed of the tubular body (20) of the paper straw, the interlaced overlap range between the adjacent overlapped paper sheets is changed according to the number of overlapped paper sheets, as in this embodiment According to the disclosure, the tubular body (20) is composed of the first paper sheet (21), the second paper sheet (22), and the third paper sheet (23), etc., which are three natural numbers of paper sheets, which are adjacent to each other The range of staggered overlap is 1-1/N, N=3. Staggered overlap is performed to ensure the best overlap of the paper sheets to strengthen the mechanical strength of the tubular body after being wound into a tube shape.

Please refer to Figures 5 and 6, the first paper sheet (21), the second paper sheet (22), and the third paper sheet (23) are interlaced as shown in Figure 4, and then are manufactured Using a core rod (61) as a mold, the first paper sheet, the second paper sheet, and the third paper sheet are sequentially wound on the core rod (61) by an external force to form a hollow tubular body, and What needs to be specifically mentioned here is: before the third paper sheet (23) is wound and formed, polyvinyl acetate is applied as an adhesive on both sides of the third paper sheet (23) According to this, after being rolled into a tubular body, each of the adhesive layers can be formed between the two sides of the third paper sheet (23) and the first paper sheet (21) and the second paper sheet (22). (30). In addition, in order to strengthen the adhesive force provided by each adhesive layer (30), the adhesive Coat the first paper sheet (21) on the outer side surface of the third paper sheet (23), or the second paper sheet (22) on the inner side surface of the third paper sheet (23), thereby increasing Any or all of the adhesive dosage of the adhesive layer (30); it can also be applied or applied to the third paper sheet (23), the first paper sheet (21) or the second paper sheet (22) Previously, first applied an external force to the area where the adhesive was to be coated or applied to cause tension on the paper sheet, thereby expanding the inter-fiber gaps inside the paper sheet, so that the coated or applied adhesive could penetrate into the paper fibers, and make subsequent The range of the adhesive force generated can penetrate deep into the paper to improve the strength of the bond. The applied tension can be adjusted according to different paper materials, sizes or other factors. In this embodiment, the applied tension is Take 3 kg as an example.

In addition, when the paper sheet is wound on the core rod (61) to form a tubular body, in order to strengthen the bonding strength between the paper sheets, as shown in Figure 6, a belt (62) can be interlaced on the two On the transmission shaft (63), at the same time, the belt (62) is formed on the outer side of the core rod (61) to form a repeated winding 8-shaped crimping part (621), so that the tube body formed by the paper sheet is wound Between the core rod (61) and the crimping part (621), and applying external force to the core rod (61) through the crimping part (621) to make the molded tube subject to There is a pressure of about 5 kg to ensure the close contact between the paper sheets and improve the mechanical strength of the formed tube.

After forming a continuous tubular body as shown in Figure 5, the paper straw semi-finished product obtained by cutting into an appropriate length can be further collected and placed in an oven (70) to warm it. Bake at about 120 degrees Celsius for about 30 minutes. On the one hand, the paper straw can be completely dried, and on the other hand, the structure of the adhesive layer can be stabilized to ensure that the formed adhesive force can be maintained in a better state. The paper straw (10) can provide better use effect than the conventional technology.

(21): The first piece of paper

(22): Second paper

(23): The third piece of paper

(30): Adhesive layer

(40): Pattern layer

(50): Isolation layer

Claims (9)

A paper straw, comprising: a tubular body with a first paper sheet in a long strip shape and located in the inner layer, a second paper sheet in a long strip shape and located in the outer layer, and an intervening between the first paper sheet and the second paper sheet Between the long strip of third paper; two adhesive layers are respectively located between the inner side of the third paper and the first paper, and between the outer side of the third paper and the second paper, for respectively adhering The first paper sheet and the third paper sheet, and the second paper sheet and the third paper sheet; wherein each of the adhesive layers is respectively coated with polyvinyl acetate on the inner and outer sides of the third paper sheet One-sided formation. The paper straw according to claim 1, wherein, before the polyvinyl acetate is coated on the third paper sheet, an external force is applied to the part to be coated on the third paper sheet to generate a force, thereby expanding the first paper sheet Three fiber voids inside the paper sheet to accommodate the polyvinyl acetate to be coated. The paper straw according to claim 1 or 2, wherein the first paper sheet, the third paper sheet, and the second paper sheet are sequentially combined with each other via the adhesive layers, and are placed in a temperature environment of about 120 degrees Celsius Stay for about 30 minutes. The paper straw according to claim 2, wherein the tension is about 3 kg. The paper straw according to claim 1, 2, or 4, wherein the first paper sheet, the third paper sheet, and the second paper sheet are superimposed on each other and are wound on a core rod to form the tubular body. The tubular body is interposed between the core rod and a wound belt, and a force is applied to the core rod through the belt, so that the first paper sheet, the third paper sheet and the second paper sheet are mutually Close to each other. The paper straw according to claim 5, wherein the force applied by the belt to the tubular body in the direction of the core rod is about 5 kg. The paper straw according to claim 5, wherein the belt is wound in a figure eight shape. The paper straw according to claim 1, wherein the number of paper sheets in the tubular body is a natural number N, and the adjacent paper sheets that are directly overlapped with each other have a range of 1- 1/N. The paper straw according to claim 1, which further includes: a pattern layer, which is printed by ink on an outer layer of the tubular body; and an isolation layer, is a combination of varnish covering the pattern layer On the outer layer of the tubular body.

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