CN112455007B - Method for manufacturing paper straw - Google Patents
Method for manufacturing paper straw Download PDFInfo
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- CN112455007B CN112455007B CN201910841408.4A CN201910841408A CN112455007B CN 112455007 B CN112455007 B CN 112455007B CN 201910841408 A CN201910841408 A CN 201910841408A CN 112455007 B CN112455007 B CN 112455007B
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- paper
- processed
- hot melt
- melt adhesive
- straw
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31C—MAKING WOUND ARTICLES, e.g. WOUND TUBES, OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31C1/00—Making tubes or pipes by feeding at right angles to the winding mandrel centre line
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31C—MAKING WOUND ARTICLES, e.g. WOUND TUBES, OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31C11/00—Machinery for winding combined with other machinery
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31C—MAKING WOUND ARTICLES, e.g. WOUND TUBES, OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31C11/00—Machinery for winding combined with other machinery
- B31C11/06—Machinery for winding combined with other machinery for drying the wound and impregnated articles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31C—MAKING WOUND ARTICLES, e.g. WOUND TUBES, OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31C3/00—Making tubes or pipes by feeding obliquely to the winding mandrel centre line
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- Making Paper Articles (AREA)
Abstract
The invention relates to a manufacturing method of a paper straw, which comprises the following steps: the method comprises a paper roll transmission step, a paper strip heating step, a bonding forming step and a cutting step. The paper roll processing method comprises the following steps that paper rolls to be processed are conveyed towards a joint position together, and the paper rolls to be processed comprise paper materials and dry hot melt adhesives; heating the paper strips to be processed to change the dry hot melt adhesive of the paper strips to be processed into a fluid hot melt adhesive; subsequently, the paper strips to be processed are conveyed to the joint position to be wound together, and the fluid hot melt adhesive is respectively adhered to another paper strip to be processed to form a tubular body; and finally, cutting the tubular body to form the paper straw after the tubular body forms a set length. The invention is made of dry adhesive paper, has no adhesive overflow and mildew phenomenon of the traditional wet lamination, does not need the shaping and drying operation required by the common process, greatly improves the production efficiency and reduces the product reject ratio.
Description
Technical Field
The invention relates to a method for manufacturing a straw, in particular to a method for manufacturing a paper straw by adhering dry adhesive paper.
Background
With the development of food culture and the improvement of living standard of materials, the packaged, canned beverages and the on-site prepared hand-operated cup beverages are all visible, so the consumption of straws used in the world is extremely remarkable, the most common straws are plastic straws with the lowest manufacturing cost at present, however, the plastic straws are convenient to use, but are often discarded by people at will after being used, and subsequent recovery treatment is not easy, so that the environmental and ecological damage is caused.
In addition, with the rising of environmental awareness, in order to solve the problems caused by the conventional plastic straws, a reusable metal straw has been introduced, and a stainless steel straw is usually used, but the stainless steel straw has the advantage of being reusable, but is not suitable for being developed and popularized by consumers who are generally troubled because users have to carry the straw with them.
Furthermore, the stainless steel straw must be cleaned or sterilized for repeated use based on sanitary requirements, however, the straw has a small aperture, and is not easy to clean or sterilize, and the general consumers still feel the sanitary conditions to be feared, so the reusable metal straw cannot replace the traditional plastic straw at present.
In view of the inconvenience of the metal straw, another paper straw for replacing the plastic straw is shown in fig. 1, in the conventional method for manufacturing the paper straw, three rolls of paper made of composite material are transported together, the first paper 90, the second paper 91 and the third paper 92 pass through a glue dipping machine 93, the contact surfaces between the first paper 90, the second paper 91 and the third paper 92 are coated with food-grade wet glue respectively, then the first paper 90, the second paper 91 and the third paper 92 are moved together to a winding mechanism 94, the winding mechanism 94 winds the glue of the first paper 90, the second paper 91 and the third paper 92 spirally to produce a paper tube 95 with three paper walls, a cutting machine 96 cuts the paper tube 95 according to the length to complete the length of the paper straw, and finally, a drying machine 97 dries the paper straw to solidify the wet glue.
However, when three paper materials are bonded by a wet glue, the moisture on the outermost paper material can be discharged during the drying process, but the inner paper material is affected by the wet glue, so that the problem of glue overflow or moisture remaining in the paper straw is often caused, and the paper straw is easy to get moldy, which causes the problem of food safety.
In addition, in the current wet production mode, operators must have certain experience to reduce the generation of defective products, and the operators must pay attention to the liquid adding dilution at any time because the concentration of the glue material changes due to the evaporation of water under the long-time production state of the glue material.
If the liquid component of the glue material is too little, the surface of the glue material is easy to be dried to reduce the viscosity, so that false adhesion is caused, and the straw is easy to delaminate; on the other hand, if the liquid content of the glue material is too much, the problems of reduced viscosity and difficult drying will also occur. Therefore, the production efficiency of the conventional wet lamination method cannot be improved, and the product defect rate cannot be effectively improved.
Disclosure of Invention
To solve the above technical problems, the present invention aims to: the method for manufacturing the paper straw by using the dry adhesive tape is provided, so that the conventional adhesive overflowing and delaminating problems and mildewing phenomena do not occur in the production process of dry bonding of the adhesive tape, and the bonding strength of the dry bonding is increased by 20-30% compared with that of the wet bonding.
The secondary objective of the present invention is to provide a dry lamination process that can solve the problem of the conventional wet lamination that an additional adhesive material drying process is required, thereby greatly increasing the production speed and effectively reducing the defective rate of the paper suction tube.
The invention also aims to ensure that the dry-type laminating has low experience requirements on operators, continuous production can be realized only by setting the manufacturing parameters, the experience requirements of operators are greatly reduced, and the risk of improper manual operation can be reduced.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows: a manufacturing method of a paper straw comprises the following steps:
a paper roll transmission step, wherein a plurality of paper rolls to be processed jointly transmit a paper strip to be processed towards a joint position, wherein the paper strip to be processed comprises paper material and dry hot melt adhesive;
a paper strip heating step: heating the paper strips to be processed to change the dry hot melt adhesive of the paper strips to be processed into a fluid hot melt adhesive;
a bonding molding step: conveying the paper strips to be processed to the joint position for winding together, and respectively adhering the fluid hot melt adhesives to another paper strip to be processed to form a tubular body; and
a cutting step: and after the tubular body forms a set length, cutting the tubular body to form at least one paper straw.
The manufacturing method of the paper straw comprises an outer layer paper material, a middle layer paper material, an inner layer paper material, a first hot melt adhesive positioned between the outer layer paper material and the middle layer paper material and a second hot melt adhesive positioned between the middle layer paper material and the inner layer paper material, wherein the width of the outer layer paper material is larger than that of the middle layer paper material, and the width of the middle layer paper material is larger than that of the inner layer paper material.
In the method for manufacturing the paper straw, the first hot melt adhesive and the second hot melt adhesive comprise: according to weight percentage, 40 to 45 percent of acrylic acid copolymer, 55 to 60 percent of water and less than or equal to 0.1 percent of ammonia water.
In the manufacturing method of the paper straw, the heating temperature in the paper strip heating step is 80-200 ℃.
In a practical embodiment of the method for manufacturing the paper straw, the step of heating the paper slip is performed by at least one of hot air, infrared rays, a heater or microwaves before the joining position.
In another possible embodiment of the method for manufacturing the paper straw, the step of heating the paper slip is to perform heating and bonding processes simultaneously at the bonding position by using a hot-rolling machine.
In addition, in a preferred embodiment, the paper roll conveying step further comprises:
a paper gluing step: arranging the fluid hot melt adhesive on at least one surface of the paper material to form a processed paper sheet;
a colloid drying step: drying the fluid hot melt adhesive of the processed paper to change the fluid hot melt adhesive into the dry hot melt adhesive;
a paper winding step: rolling the processed paper to form a paper batch to be processed;
a paper batch cutting step: and cutting the paper batch to be processed according to a processing length to form a plurality of paper rolls to be processed.
Furthermore, in another preferred embodiment, the paper roll conveying step further comprises:
a paper gluing step: arranging the fluid hot melt adhesive on at least one surface of the paper material to form a processed paper;
a colloid drying step: drying the fluid hot melt adhesive of the processed paper to change the fluid hot melt adhesive into the dry hot melt adhesive;
a paper winding step: and winding the processing paper to form the paper roll to be processed.
In the above two preferred embodiments, the drying temperature of the colloid drying step is 40-80 ℃.
In the above two preferred embodiments, the paper material is coated with glue by one of blade coating, roller coating, spraying or curtain coating.
Compared with the prior art, the invention has the advantages that: the paper strip to be processed is composed of paper material and dry hot melt adhesive, and is heated and then wound together to be directly bonded into a tubular body, so that the bonding strength between the paper materials is improved, and the problems of glue overflow, delamination and mildewing in the traditional method are avoided. In addition, the cutting operation is directly carried out after the pasting is finished, an additional colloid drying procedure is not needed, the production speed of the paper straw can be greatly improved, and the reject ratio of products can be effectively reduced.
Drawings
FIG. 1 is a schematic view of a conventional paper drinking straw manufacturing method;
FIG. 2 is a schematic illustration of a method of making a paper-imbibed tube of the invention;
FIG. 3 is a step diagram of a method of making the paper drinking straw of FIG. 2;
FIG. 4 is a flow chart of a method of manufacturing the paper drinking straw of FIG. 2;
FIG. 5 is a cross-sectional view of the tubular body;
FIGS. 6A to 6C are schematic views of a tubular body made of different embodiments of strips to be processed; and
fig. 7A and 7B are flow charts of various processing steps prior to the roll transfer step.
Description of reference numerals:
10-paper roll to be processed; 11-paper strips to be processed; 12-outer ply paper; 13-middle layer paper; 14-inner paper; 15-first hot melt adhesive; 16-a second hot melt adhesive; 20-a heater; 30-a bonding forming machine; 40-a tubular body; 50-a cutting machine; s1, a paper roll transmission step; s2-heating the paper strip; s3, an adhesion forming step; s4, cutting; s5, gluing the paper material; s6-drying the colloid; s7, a paper winding step; s8, cutting the paper batch; a P-engaged position; 90-first paper; 91-second paper material; 92-third paper; 93-glue dipping machine; 94-a winding mechanism; 95-paper tubing; 96-a cutter; 97-dryer.
Detailed Description
The invention will be further described with reference to specific embodiments and drawings, the advantages and features of which will become apparent as the description proceeds.
Referring to fig. 2 to 4, the method for manufacturing a paper straw of the present invention includes four processing steps, i.e., a paper roll transferring step S1, a paper strip heating step S2, a bonding step S3, and a cutting step S4.
In the paper roll transmission step S1, a plurality of transmission devices jointly transmit a paper strip 11 to be processed to a joint position P from a plurality of paper rolls 10 to be processed, wherein the paper strip 11 to be processed comprises a paper material and a dry hot melt adhesive; in the step S2, a heater 20 heats the paper strip 11 to be processed, the heating temperature is 80-200 ℃, and the dry hot melt adhesive of the paper strip 11 to be processed can be changed into a fluid hot melt adhesive; the step S3 of adhesive molding is to transmit the paper strips 11 to be processed to an adhesive molding machine 30 at the joining position P for winding together, and to make the fluid hot melt adhesives respectively adhere to another paper strip 11 to be processed to form a tubular body 40, wherein the adhesive molding machine 30 has a cooling shaft surrounded by the tubular body 40; in the cutting step S4, after the tubular body 40 leaves the cooling shaft to form a set length, a cutting machine 50 capable of moving relative to the cooling shaft moves the tubular body 40 synchronously, and cuts the tubular body 40 to form at least one paper straw.
Referring to fig. 5, the paper straw includes an outer layer paper 12, a middle layer paper 13, an inner layer paper 14, a first hot melt 15 between the outer layer paper 12 and the middle layer paper 13, and a second hot melt 16 between the middle layer paper 13 and the inner layer paper 14, wherein the width of the outer layer paper 12 is greater than the width of the middle layer paper 13, and the width of the middle layer paper 13 is greater than the width of the inner layer paper 14.
Referring to fig. 6A to 6C for different embodiments, as shown in fig. 6A, the first hot melt adhesive 15 and the second hot melt adhesive 16 are respectively coated on two opposite sides of the middle paper 13, and the middle paper 13 is respectively adhered to the outer paper 12 and the inner paper 14.
As shown in fig. 6B, the paper straw can further coat the first hot melt adhesive 15 and the second hot melt adhesive 16 on the adjacent sides of the outer paper 12 and the inner paper 14, respectively, and then adhere the outer paper 12 and the inner paper 14 to the opposite sides of the middle paper 13.
As shown in fig. 6C, a portion of the first hot melt 15 and a portion of the second hot melt 16 are respectively coated on adjacent sides of the outer paper 12 and the inner paper 14, and the remaining portion of the first hot melt 15 and the remaining portion of the second hot melt 16 are respectively coated on two opposite sides of the middle paper 13, and then the paper straw structure is assembled by combining the hot melts.
The paper material of the invention is the standard of general base paper, the paper length of 120 g is 5000 to 6000 m, the paper length of 60 g is 10000 to 12000 m, and the width is 600 to 800 m; various papers such as kraft paper, cardboard and the like are selected. And the first hot melt adhesive 15 and the second hot melt adhesive 16 comprise: according to weight percentage, 40 to 45 percent of acrylic acid copolymer, 55 to 60 percent of water and less than or equal to 0.1 percent of ammonia water.
In addition, in the preferred embodiment shown in the drawings, the paper strip heating step S2 is performed by at least one of hot air, infrared ray, heater or microwave before the joining position P.
In another possible embodiment, the strip heating step S2 is to perform the heating and bonding processes at the bonding position P by using a hot-rolling machine that functionally combines the heater 20 and the bonding forming machine 30.
Referring to fig. 7A, before the step S1 of transporting the paper roll, the method for manufacturing a paper straw according to the present invention may further include: a paper gluing step S5, a colloid drying step S6, a paper winding step S7, a paper batch cutting step S8 and the like.
And the paper material gluing step S5 is to arrange the fluid hot melt adhesive on at least one surface of the paper material by a coating machine to form a processed paper, wherein the coating machine adopts one of blade coating, roll coating, spraying and curtain coating. And the step S6 of drying the colloid is to dry the fluid hot melt adhesive of the processed paper by a dryer to change the fluid hot melt adhesive into the dry hot melt adhesive, wherein the drying temperature is 40-80 ℃. And the paper winding step S7 is to wind the processing paper into a paper batch to be processed with a size larger than the processing requirement. The step S8 of cutting the batch of paper is to cut the batch of paper to be processed into a plurality of rolls 10 to be processed according to a length required for processing.
Referring to fig. 7B, in another preferred embodiment, before the step S1 of transporting the paper roll, the method for manufacturing a paper straw according to the present invention further includes: a paper gluing step S5, a colloid drying step S6 and a paper winding step S7.
The paper gluing step S5 is also to arrange the fluid hot melt adhesive on at least one surface of the paper by a coater to form a processed paper, and similarly, the paper gluing step S5 is to adopt one of blade coating, roll coating, spray coating or curtain coating. And the step S6 of drying the colloid is to dry the fluid hot melt adhesive of the processed paper by a dryer so as to change the fluid hot melt adhesive into the dry hot melt adhesive, wherein the drying temperature is 40-80 ℃. And the paper winding step S7 is to directly wind the processed paper to form the paper roll 10 to be processed which can be directly processed.
The foregoing description and examples are exemplary only, and are not intended to limit the scope of the invention in any way. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention, and that such changes and modifications may be made without departing from the spirit and scope of the invention.
Claims (5)
1. A manufacturing method of a paper straw is characterized in that: comprises the following steps:
a paper gluing step: arranging a fluid hot melt adhesive on at least one surface of a paper material to form a processed paper;
the fluid hot melt adhesive comprises: according to the mass percentage, 40 to 45 percent of acrylic acid copolymer, 55 to 60 percent of water and 0.1 percent or less of ammonia water;
a colloid drying step: drying the fluid hot melt adhesive of the processed paper, wherein the drying temperature is 40-80 ℃, and the fluid hot melt adhesive is changed into a dry hot melt adhesive;
a paper winding step: rolling the processed paper to form a paper batch to be processed;
a paper batch cutting step: cutting the paper batch to be processed according to a processing length to form a plurality of paper rolls to be processed;
a paper roll transmission step, wherein the paper rolls to be processed jointly transmit paper strips to be processed towards a joint position;
a paper strip heating step: heating the paper strips to be processed at 80-200 ℃ to change the dry hot melt adhesive of the paper strips to be processed into a fluid hot melt adhesive;
a bonding molding step: conveying the paper strips to be processed to the joint position for winding together, and respectively adhering the fluid hot melt adhesive to another paper strip to be processed to form a tubular body; and
a cutting step: and after the tubular body forms a set length, cutting the tubular body to form at least one paper straw.
2. The method for manufacturing a paper drinking straw as claimed in claim 1, wherein: the paper straw comprises an outer layer paper material, a middle layer paper material, an inner layer paper material, a first hot melt adhesive and a second hot melt adhesive, wherein the first hot melt adhesive is positioned between the outer layer paper material and the middle layer paper material, the second hot melt adhesive is positioned between the middle layer paper material and the inner layer paper material, the width of the outer layer paper material is larger than that of the middle layer paper material, and the width of the middle layer paper material is larger than that of the inner layer paper material.
3. The method for manufacturing a paper drinking straw according to claim 1, wherein: the paper strip heating step is to perform a heating procedure by at least one of hot air, infrared rays, a heater or microwaves before the joining position.
4. The method for manufacturing a paper drinking straw according to claim 1, wherein: the step of heating the paper strips is to adopt a hot rolling machine to simultaneously carry out heating and bonding procedures at the joint position.
5. The method for manufacturing a paper drinking straw as claimed in claim 1, wherein: the paper material gluing step adopts one of blade coating, roll coating, spraying and curtain coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910841408.4A CN112455007B (en) | 2019-09-06 | 2019-09-06 | Method for manufacturing paper straw |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910841408.4A CN112455007B (en) | 2019-09-06 | 2019-09-06 | Method for manufacturing paper straw |
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| CN112455007A CN112455007A (en) | 2021-03-09 |
| CN112455007B true CN112455007B (en) | 2023-01-31 |
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| CN201910841408.4A Active CN112455007B (en) | 2019-09-06 | 2019-09-06 | Method for manufacturing paper straw |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114619710A (en) * | 2021-06-07 | 2022-06-14 | 湖南臻诚高分子新材料有限公司 | Preparation method of paper straw with characteristics of no softening, no dispersion and low migration of hot water in soaking |
| CN114311853B (en) * | 2021-12-31 | 2024-03-22 | 苏州沪琨智能科技有限公司 | Continuous forming laminated three-layer paper tube processing equipment |
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| CN112455007A (en) | 2021-03-09 |
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