CN111037990A - Preparation and processing method of corrugated case - Google Patents
Preparation and processing method of corrugated case Download PDFInfo
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- CN111037990A CN111037990A CN201911276358.6A CN201911276358A CN111037990A CN 111037990 A CN111037990 A CN 111037990A CN 201911276358 A CN201911276358 A CN 201911276358A CN 111037990 A CN111037990 A CN 111037990A
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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
- B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
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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
- B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
- B31B50/14—Cutting, e.g. perforating, punching, slitting or trimming
- B31B50/20—Cutting sheets or blanks
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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
- B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
- B31B50/14—Cutting, e.g. perforating, punching, slitting or trimming
- B31B50/20—Cutting sheets or blanks
- B31B50/22—Notching; Trimming edges of flaps
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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
- B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
- B31B50/25—Surface scoring
- B31B50/252—Surface scoring using presses or dies
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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
- B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
- B31B50/26—Folding sheets, blanks or webs
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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
- B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
- B31B50/60—Uniting opposed surfaces or edges; Taping
- B31B50/62—Uniting opposed surfaces or edges; Taping by adhesives
- B31B50/624—Applying glue on blanks
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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
- B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
- B31B50/74—Auxiliary operations
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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
- B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
- B31B50/74—Auxiliary operations
- B31B50/742—Coating; Impregnating; Waterproofing; Decoating
- B31B50/753—Coating; Impregnating; Waterproofing; Decoating by spraying
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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
- B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
- B31B50/74—Auxiliary operations
- B31B50/88—Printing; Embossing
Abstract
The invention discloses a preparation and processing method of a corrugated case, which relates to the technical field of corrugated paper processing and comprises the following steps: cutting, namely cutting a corrugated paper raw material to obtain a corrugated board; step two, printing, namely conveying the cut corrugated board to a printing machine, selecting an image-text printing plate, and printing the corrugated board to obtain a printed matter; step three, line pressing and spraying protection: folding the printed matter by a creasing wheel to form longitudinal indentation and transverse indentation, pre-embossing and marking a cut line, spraying a solid protective agent at the longitudinal indentation, the transverse indentation and the cut line, and completely drying to obtain a coated semi-finished product; step four, grooving, namely grooving the dried coating semi-finished product by a grooving machine to obtain a corrugated paper sample plate; step five, die cutting, namely die cutting is carried out on the corrugated paper sample plate after grooving by a die cutting knife to obtain a die cutting sample plate; and step six, adhering the box. The corrugated carton obtained by the invention has good edge pressure strength.
Description
Technical Field
The invention relates to the technical field of corrugated paper processing, in particular to a preparation and processing method of a corrugated carton.
Background
The corrugated paper is a plate-shaped object formed by bonding the liner paper and the corrugated paper of a waveform formed by processing the corrugated paper through the corrugated roller, has the advantages of low cost, light weight, easy processing, high strength, excellent printing adaptability, convenient storage and transportation and the like, can be used for packaging food or digital products, is relatively environment-friendly and is widely used.
The invention discloses a production method of a corrugated paper packing box in Chinese patent application with publication number CN107042654A, which comprises the following steps: 1) cutting: cutting the corrugated board into a required shape by using a die cutting machine; 2) line pressing: folding the carton into longitudinal indentations and transverse indentations through a creasing wheel; 3) grooving; cutting a slit groove which enables the upper and lower rocking covers to be smoothly folded on the corrugated board, and cutting off redundant paper boards; 4) printing; printing required characters, patterns or information on the surface of the box body by using a printer; 5) bonding: splicing the paper boxes into corrugated paper packaging boxes by adopting a sticking and nailing machine; in the step 1), the corrugated board is selected from a waterproof corrugated board, a fresh-keeping corrugated board, an anti-static corrugated board or a deodorant corrugated board; in the step 4), the printing mode is flexo printing, offset printing or screen printing.
In the above-mentioned application, fold out vertical indentation and horizontal indentation with the carton through the fabric wheel, cut out the slot that makes the upper and lower rocking cover can fold up smoothly on corrugated container board again, and cut off unnecessary cardboard, with the carton size accuracy of guaranteeing to produce, but among the above-mentioned operation process, at the fluting with the in-process that cuts off unnecessary cardboard, make the structure of incision department corrugated paper change easily, intensity greatly reduced after the deformation, and then the whole edge crush strength of the corrugated container that leads to obtaining is not good, the application is relatively poor, consequently, need provide a new scheme and solve above-mentioned problem.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a preparation and processing method of a corrugated case, which is used for solving the technical problems and can improve the stability of the structural strength of the notch of corrugated paper in the application process, so that the obtained corrugated case has good edge pressure strength.
In order to achieve the first purpose, the invention provides the following technical scheme:
a preparation and processing method of a corrugated case comprises the following steps:
cutting, namely cutting a corrugated paper raw material to obtain a corrugated board;
step two, printing, namely conveying the cut corrugated board to a printing machine, selecting an image-text printing plate, and printing the corrugated board to obtain a printed matter;
step three, line pressing and spraying protection: folding the printed matter by a creasing wheel to form longitudinal indentation and transverse indentation, pre-embossing and marking a cut line, spraying a solid protective agent at the longitudinal indentation, the transverse indentation and the cut line, and completely drying to obtain a coated semi-finished product;
step four, grooving, namely grooving the dried coating semi-finished product by a grooving machine to obtain a corrugated paper sample plate;
step five, die cutting, namely die cutting is carried out on the corrugated paper sample plate after grooving by a die cutting knife to obtain a die cutting sample plate;
and step six, gluing the box, namely folding and bonding the die-cutting sample plate through a box gluing machine to obtain a finished corrugated carton product.
By adopting the technical scheme, the corrugated paper raw material is cut into a proper size according to the actual production requirement, then the cut corrugated paper raw material is conveyed to a printing machine, and the corrugated paper board is printed by selecting the image-text printing plate; after printing is finished, folding the printed matter into longitudinal indentation and transverse indentation through a creasing wheel, and pre-embossing and marking a notch line so as to ensure the size accuracy of the corrugated case; and the solid protective agent is sprayed at the longitudinal indentation, the transverse indentation and the cut line, so that the solid protective agent can form a protective layer on the surface of a printed matter after being completely dried, the protective layer has a reinforcing effect on the structural strength of the corrugated paper, the corrugated paper can be ensured to keep good structural stability after being cut, and then the corrugated carton finished product obtained after subsequent grooving, die cutting and carton bonding has good edge pressure strength. Meanwhile, in the process of slotting and die cutting, the protective layer formed by the solid protective agent can greatly reduce the generation of rough edges, so that the finished corrugated carton product obtained after carton sticking is more tidy and has better quality.
Further preferably, in the third step, the solid protective agent comprises the following components in parts by weight:
45-55 parts of silicone-acrylate emulsion;
10-20 parts of deionized water;
0.1-0.3 part of leveling agent;
4-6 parts of a thickening agent;
0.2-0.4 part of defoaming agent;
1.5-2.5 parts of polyethylene glycol;
2-5 parts of brucite fiber;
4-6 parts of lignin fiber.
By adopting the technical scheme, the silicone-acrylic emulsion has good water resistance, durability, corrosion resistance of inorganic materials and higher flexibility of organic materials, can adapt to the deformability of the base material to a certain degree, has good compatibility and associativity with other component raw materials, and can play good supporting and protecting roles on corrugated paper. Polyethylene glycol is a good solvent and dispersant, and is beneficial to forming a stable dispersion system of raw materials of each component. The brucite fiber is used as a reinforcing material and an additive, and has certain adsorption performance; the lignin fiber has good toughness, dispersibility and chemical stability, and has good associativity with corrugated paper; and the brucite fiber and the lignin fiber are mutually matched to form a mutually staggered reinforcing network, so that the solid protective agent can play a good role in protecting and reinforcing the corrugated paper at the notch after being sprayed and cured, and further the whole quality of the corrugated carton can be favorably ensured.
More preferably, the leveling agent is any one of polydimethylsiloxane, polyacrylic acid and carboxymethyl cellulose.
By adopting the technical scheme, the polydimethylsiloxane, the polyacrylic acid and the carboxymethyl cellulose are all good flatting agents, so that the surface tension of the solid protective agent can be effectively reduced, the flatting property and the uniformity of the solid protective agent are improved, a flat, smooth and uniform protective layer is formed in the drying and film forming process of the solid protective agent, and the external aesthetic property of the corrugated case is favorably ensured.
More preferably, the thickener is any one of sodium starch phosphate, sodium polyacrylate and sodium carboxymethyl cellulose.
By adopting the technical scheme, the sodium starch phosphate, the sodium polyacrylate and the sodium carboxymethylcellulose are good thickeners, the whole temperature resistance is good, the solid protective agent can be kept in a uniform and stable dispersion system, and then the solid protective agent is ensured to have a longer storage period and can form a uniform and stable protective layer after being used.
More preferably, the defoaming agent is any one of silicone emulsion, polyoxypropylene glycerol ether and stearic acid.
By adopting the technical scheme, when the solid protective agent is sprayed for use, air easily enters the inside of the solid protective agent to form micro bubbles, and when the solid protective agent is dried, the micro bubbles in the solid protective agent are easy to migrate and gather together to form larger bubbles; the emulsified silicone oil, the polyoxypropylene glycerol ether and the polydimethylsiloxane have good bubble removing effect, so that large bubbles are not easy to appear in the solid protective agent after curing and forming, the whole body is compact, and good and stable flexibility is kept in the using process; thereby ensuring that the corrugated case has good edge pressure strength in the using process.
Further preferably, the third step is specifically set as follows: folding the printed matter by a creasing wheel to form longitudinal indentation and transverse indentation, pre-molding and marking a cut line, spraying a solid protective agent at the longitudinal indentation, the transverse indentation and the cut line, drying at 60-80 ℃ for 5-10min, and completely drying to obtain a coated semi-finished product.
By adopting the technical scheme, the drying temperature is controlled to be 60-80 ℃, the drying time is controlled to be 5-10min, the solid protective agent sprayed on the printed matter can be completely dried, the whole structure of the printed matter is not easily damaged, and a coating semi-finished product with good quality can be obtained.
More preferably, in the third step, the spraying amount of the fixing protective agent on the printed matter is 6-8g per square meter, and the spraying range extends from the longitudinal indentation, the transverse indentation and the incision line to 3-5cm respectively towards the two sides of the printed matter.
By adopting the technical scheme, when the spraying amount of the protective agent is 6-8 g/square meter, the protective layer formed on the printed matter can have a good protective effect on the corrugated paper at the notch, and meanwhile, the spraying range extends from the longitudinal indentation, the transverse indentation and the notch line to 3-5cm respectively to the two sides of the notch, so that the subsequent processing of the obtained coated semi-finished product is facilitated, and the production cost can be controlled.
Preferably, the sixth step is to glue the box, polish the cut on the die-cut template with a rubber wheel to a depth of 15-35 μm, and then fold and bond the cut with a box gluing machine to obtain the finished corrugated case.
By adopting the technical scheme, the rubber wheel is used for polishing the surface of the cutting template, a few rough edges generated in the processing process of the protective layer can be removed, the polishing depth is controlled to be 15-35 mu m, the corrugated paper under the protective layer is not easy to be damaged in the polishing process, and the quality of the corrugated carton finished product can be greatly improved on the premise of ensuring the operation stability.
In summary, compared with the prior art, the invention has the following beneficial effects:
(1) the solid protective agent is sprayed at the longitudinal indentation, the transverse indentation and the cut line, so that the solid protective agent can form a protective layer on the surface of a printed matter after being completely dried, the corrugated paper can keep good structural stability after being cut, and a corrugated paper box finished product obtained after subsequent grooving, die cutting and box sticking has good edge pressure strength;
(2) the brucite fiber and the lignin fiber in the solid protective agent are matched with each other, so that a mutually staggered reinforcing network can be formed, the solid protective agent can play a good role in protecting and reinforcing the corrugated paper at the opening after being sprayed and cured, and the whole quality of the corrugated carton can be guaranteed.
Drawings
FIG. 1 is a process flow diagram of the present invention.
Detailed Description
The invention is described in detail below with reference to the figures and examples.
Example 1: a method for preparing and processing corrugated cartons is prepared by the following steps:
cutting, namely cutting a corrugated paper raw material to obtain a corrugated board;
step two, printing, namely conveying the cut corrugated board to a printing machine, selecting an image-text printing plate, and printing the corrugated board to obtain a printed matter;
step three, line pressing and spraying protection: folding the printed product by a creasing wheel to form longitudinal indentations and transverse indentations, pre-embossing and marking cut lines, spraying a fixing protective agent at the longitudinal indentations, the transverse indentations and the cut lines, wherein the spraying amount of the fixing protective agent on the printed product is 7 g/square meter, the spraying range extends from the longitudinal indentations, the transverse indentations and the cut lines to two sides of the printed product by 4cm respectively, the drying temperature is 70 ℃, the drying time is 7.5min, and completely drying to obtain a coated semi-finished product;
step four, grooving, namely grooving the dried coating semi-finished product by a grooving machine to obtain a corrugated paper sample plate;
step five, die cutting, namely die cutting is carried out on the corrugated paper sample plate after grooving by a die cutting knife to obtain a die cutting sample plate;
and step six, gluing the box, namely folding and bonding the die-cutting sample plate through a box gluing machine to obtain a finished corrugated carton product.
Note: the components and corresponding parts by weight of the solid protective agent in the third step are shown in table 1, and the solid protective agent is prepared by the following steps of firstly stirring and uniformly mixing the silicone-acrylic emulsion, the deionized water and the polyethylene glycol in corresponding parts by weight at the stirring speed of 1200rpm for 5min, then adding the brucite fiber and the lignin fiber in corresponding parts by weight, continuing stirring for 10min, finally adding the polydimethylsiloxane, the sodium starch phosphate and the emulsified silicone oil in corresponding parts by weight at the stirring speed of 700rpm for 5min, and fully stirring and mixing to obtain the solid protective agent.
Examples 2 to 5: the preparation and processing method of the corrugated case is different from the embodiment 1 in that the components of the solid protective agent in the step three and the corresponding parts by weight are shown in the table 1.
TABLE 1 Components and parts by weight of examples 1-5
Example 6: the manufacturing and processing method of the corrugated case is different from the embodiment 1 in that the polydimethylsiloxane and the like in the solid protective agent in the third step are replaced by polyacrylic acid.
Example 7: the manufacturing and processing method of the corrugated case is different from the embodiment 1 in that the mass of polydimethylsiloxane and the like in the solid protective agent in the step three is replaced by carboxymethyl cellulose.
Example 8: the manufacturing and processing method of the corrugated case is different from the embodiment 1 in that sodium starch phosphate and the like in the solid protective agent in the step three are replaced by sodium polyacrylate in quality.
Example 9: the preparation and processing method of the corrugated case is different from the embodiment 1 in that sodium starch phosphate and the like in the solid protective agent in the step three are replaced by sodium carboxymethyl cellulose in quality.
Example 10: the manufacturing and processing method of the corrugated case is different from the embodiment 1 in that the quality of emulsified silicone oil and the like in the solid protective agent in the step three is replaced by polyoxypropylene glycerol ether.
Example 11: the manufacturing and processing method of the corrugated case is different from the embodiment 1 in that the quality of emulsified silicone oil and the like in the solid protective agent in the step three is replaced by stearic acid.
Example 12: the manufacturing and processing method of the corrugated case is different from the embodiment 1 in that the third step is specifically set as the following steps: folding the printed product by a creasing wheel to form longitudinal indentation and transverse indentation, pre-embossing to mark a cut line, spraying a fixing protective agent at the longitudinal indentation, the transverse indentation and the cut line, wherein the spraying amount of the fixing protective agent on the printed product is 6 g/square meter, the spraying range extends from the longitudinal indentation, the transverse indentation and the cut line to two sides of the printed product by 3cm respectively, the drying temperature is 70 ℃, the time is 7.5min, and completely drying to obtain a coated semi-finished product.
Example 13: the manufacturing and processing method of the corrugated case is different from the embodiment 1 in that the third step is specifically set as the following steps: folding the printed product by a creasing wheel to form longitudinal indentation and transverse indentation, pre-embossing to mark a cut line, spraying a fixing protective agent at the longitudinal indentation, the transverse indentation and the cut line, wherein the spraying amount of the fixing protective agent on the printed product is 8 g/square meter, the spraying range extends to two sides of the printed product by 5cm from the longitudinal indentation, the transverse indentation and the cut line respectively, the drying temperature is 70 ℃, the time is 7.5min, and completely drying to obtain a coated semi-finished product.
Example 14: the manufacturing and processing method of the corrugated case is different from the embodiment 1 in that the third step is specifically set as the following steps: folding the printed product by a creasing wheel to form longitudinal indentation and transverse indentation, pre-embossing to mark a cut line, spraying a fixing protective agent at the longitudinal indentation, the transverse indentation and the cut line, wherein the spraying amount of the fixing protective agent on the printed product is 7 g/square meter, the spraying range extends from the longitudinal indentation, the transverse indentation and the cut line to two sides of the printed product by 4cm respectively, the drying temperature is 60 ℃, the time is 10min, and completely drying to obtain a coated semi-finished product.
Example 15: the manufacturing and processing method of the corrugated case is different from the embodiment 1 in that the third step is specifically set as the following steps: folding the printed product by a creasing wheel to form longitudinal indentation and transverse indentation, pre-embossing to mark a cut line, spraying a fixing protective agent at the longitudinal indentation, the transverse indentation and the cut line, wherein the spraying amount of the fixing protective agent on the printed product is 7 g/square meter, the spraying range extends from the longitudinal indentation, the transverse indentation and the cut line to two sides of the printed product by 4cm respectively, the drying temperature is 80 ℃, the time is 5min, and completely drying to obtain a coated semi-finished product.
Example 16: the manufacturing and processing method of the corrugated case is different from the embodiment 1 in that the sixth step is specifically set as gluing the case, grinding the cut on the die-cut template by using a rubber wheel, wherein the grinding depth is 25 mu m, and then folding and bonding the cut by using a case gluing machine to obtain a finished corrugated case.
Example 17: the manufacturing and processing method of the corrugated case is different from the embodiment 1 in that the sixth step is specifically that the case is glued, the cut on the die-cut template is polished by a rubber wheel, the polishing depth is 15 mu m, and then the corrugated case is folded and bonded by a case gluing machine to obtain a finished corrugated case product.
Example 18: the manufacturing and processing method of the corrugated case is different from the embodiment 1 in that the sixth step is specifically set as gluing the case, grinding the cut on the die-cut template by using a rubber wheel, wherein the grinding depth is 35 mu m, and then folding and bonding the cut by using a case gluing machine to obtain a finished corrugated case.
Comparative example 1: the manufacturing and processing method of the corrugated case is different from the embodiment 1 in that the corrugated case is manufactured by the following steps:
s1, cutting, namely cutting the corrugated paper raw material to obtain the corrugated board;
s2, printing, namely conveying the cut corrugated board to a printing machine, selecting an image-text printing plate, and printing the corrugated board to obtain a printed matter;
s3, line pressing: folding the printed matter into longitudinal indentation and transverse indentation through a line pressing wheel, and pre-molding and marking a notch line to obtain a pre-processing sample;
s4, grooving, namely grooving the dried preprocessed sample by a grooving machine to obtain a corrugated paper sample plate;
s5, die cutting, namely die cutting the grooved corrugated paper sample plate by a die cutter to obtain a die cutting sample plate;
and S6, gluing the box, and folding and adhering the die-cutting sample plate through a box gluing machine to obtain the finished corrugated carton.
Comparative example 2: a preparation and processing method of a corrugated case is different from that of embodiment 1 in that the solid protective agent in the third step is prepared by uniformly stirring and mixing the silicone-acrylic emulsion, the deionized water and the polyethylene glycol in corresponding parts by weight, wherein the stirring speed is 1200rpm, the stirring time is 5min, then adding the brucite fiber in corresponding parts by weight, continuously stirring for 10min, finally adding the polydimethylsiloxane, the sodium starch phosphate and the emulsified silicone oil in corresponding parts by weight, the stirring speed is 700rpm, the stirring time is 5min, and fully stirring and mixing to obtain the solid protective agent.
Comparative example 3: the preparation method of the corrugated case is different from the embodiment 1 in that the solid protective agent in the steps of three is prepared by uniformly stirring and mixing the silicone-acrylic emulsion, the deionized water and the polyethylene glycol in corresponding parts by weight at the stirring speed of 1200rpm for 5min, adding the lignin fiber in corresponding parts by weight, continuously stirring for 10min, adding the polydimethylsiloxane, the sodium starch phosphate and the emulsified silicone oil in corresponding parts by weight at the stirring speed of 700rpm for 5min, and fully stirring and mixing to obtain the solid protective agent.
Comparative example 4: the preparation method of the corrugated case is different from the embodiment 1 in that the solid protective agent in the steps of three is prepared by the following steps of stirring and mixing the silicone-acrylic emulsion, the deionized water and the polyethylene glycol in corresponding parts by weight uniformly at the stirring speed of 1200rpm for 5min, adding the polydimethylsiloxane, the sodium starch phosphate and the emulsified silicone oil in corresponding parts by weight at the stirring speed of 700rpm for 5min, and fully stirring and mixing to obtain the solid protective agent.
Comparative example 5: the manufacturing and processing method of the corrugated case is different from the embodiment 1 in that the third step is specifically set as the following steps: folding the printed product by a creasing wheel to form longitudinal indentation and transverse indentation, pre-embossing to mark a cut line, spraying a fixing protective agent at the longitudinal indentation, the transverse indentation and the cut line, wherein the spraying amount of the fixing protective agent on the printed product is 5 g/square meter, the spraying range extends from the longitudinal indentation, the transverse indentation and the cut line to two sides of the printed product by 4cm respectively, the drying temperature is 70 ℃, the time is 7.5, and completely drying to obtain a coated semi-finished product.
Comparative example 6: the manufacturing and processing method of the corrugated case is different from the embodiment 1 in that the third step is specifically set as the following steps: folding the printed product by a creasing wheel to form longitudinal indentation and transverse indentation, pre-embossing to mark a cut line, spraying a fixing protective agent at the longitudinal indentation, the transverse indentation and the cut line, wherein the spraying amount of the fixing protective agent on the printed product is 9 g/square meter, the spraying range extends from the longitudinal indentation, the transverse indentation and the cut line to two sides of the printed product by 4cm respectively, the drying temperature is 70 ℃, the time is 7.5min, and completely drying to obtain a coated semi-finished product.
Comparative example 7: the manufacturing and processing method of the corrugated case is different from the embodiment 1 in that the third step is specifically set as the following steps: folding the printed product by a creasing wheel to form longitudinal indentation and transverse indentation, pre-embossing to mark a cut line, spraying a fixing protective agent at the longitudinal indentation, the transverse indentation and the cut line, wherein the spraying amount of the fixing protective agent on the printed product is 7 g/square meter, the spraying range extends from the longitudinal indentation, the transverse indentation and the cut line to two sides of the printed product by 4cm respectively, the drying temperature is 50 ℃, the time is 7.5min, and completely drying to obtain a coated semi-finished product.
Comparative example 8: the manufacturing and processing method of the corrugated case is different from the embodiment 1 in that the third step is specifically set as the following steps: folding the printed product by a creasing wheel to form longitudinal indentation and transverse indentation, pre-embossing to mark a cut line, spraying a fixing protective agent at the longitudinal indentation, the transverse indentation and the cut line, wherein the spraying amount of the fixing protective agent on the printed product is 7 g/square meter, the spraying range extends from the longitudinal indentation, the transverse indentation and the cut line to two sides of the printed product by 4cm respectively, the drying temperature is 90 ℃, the time is 7.5min, and completely drying to obtain a coated semi-finished product.
Performance testing
Test samples: corrugated paper produced and manufactured by Qingdao Zhengmao packaging company Limited is selected as a corrugated paper raw material; the box-bonding adhesive is HSL-309-1 water-based sealing adhesive of new materials of the Iriketta Limited.
The test method comprises the following steps: 26 standard samples were prepared according to the manufacturing process of corrugated containers in examples 1 to 18 and comparative examples 1 to 8 using the above test samples, and then each standard sample was examined according to the contents of the standard GB/T6546-1998 "measuring method of edge crush strength of corrugated cardboard", and the edge crush strength was recorded in correspondence with examples 1 to 18 and comparative examples 1 to 8.
And (3) test results: the test results of examples 1 to 18 and comparative examples 1 to 8 are shown in Table 2. As can be seen from table 2, the results of the tests of examples 1 to 5 and comparative example 1 are compared, and the edge crush strength of the corrugated cardboard box product can be greatly improved by spraying the solid type protecting agent at the longitudinal indentation, the transverse indentation and the cut line. Comparing the test results of examples 6 to 18 with the test result of example 1, the leveling agent, the thickening agent, the defoaming agent and the processing control process in the solid protective agent disclosed by the invention are all suitable for the preparation and processing method, and the obtained corrugated case finished product has good and stable edge pressure strength. Compared with the test results of comparative examples 2 to 4 and example 1, the brucite fiber and the lignin fiber have good compounding synergistic effect, the solid protective agent has good and stable effect, and the obtained corrugated case finished product has good and stable edge pressure strength.
TABLE 2 test results of examples 1 to 18 and comparative examples 1 to 8
The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.
Claims (8)
1. A preparation and processing method of a corrugated case is characterized by comprising the following steps:
cutting, namely cutting a corrugated paper raw material to obtain a corrugated board;
step two, printing, namely conveying the cut corrugated board to a printing machine, selecting an image-text printing plate, and printing the corrugated board to obtain a printed matter;
step three, line pressing and spraying protection: folding the printed matter by a creasing wheel to form longitudinal indentation and transverse indentation, pre-embossing and marking a cut line, spraying a solid protective agent at the longitudinal indentation, the transverse indentation and the cut line, and completely drying to obtain a coated semi-finished product;
step four, grooving, namely grooving the dried coating semi-finished product by a grooving machine to obtain a corrugated paper sample plate;
step five, die cutting, namely die cutting is carried out on the corrugated paper sample plate after grooving by a die cutting knife to obtain a die cutting sample plate;
and step six, gluing the box, namely folding and bonding the die-cutting sample plate through a box gluing machine to obtain a finished corrugated carton product.
2. The corrugated case manufacturing method according to claim 1, wherein in the third step, the solid protective agent comprises the following components in parts by weight:
45-55 parts of silicone-acrylate emulsion;
10-20 parts of deionized water;
0.1-0.3 part of leveling agent;
4-6 parts of a thickening agent;
0.2-0.4 part of defoaming agent;
1.5-2.5 parts of polyethylene glycol;
2-5 parts of brucite fiber;
4-6 parts of lignin fiber.
3. The corrugated case manufacturing method according to claim 1, wherein the leveling agent is any one of polydimethylsiloxane, polyacrylic acid, and carboxymethyl cellulose.
4. The method for manufacturing a corrugated case according to claim 1, wherein the thickener is any one of sodium starch phosphate, sodium polyacrylate and sodium carboxymethyl cellulose.
5. The method for manufacturing a corrugated case according to claim 1, wherein the defoaming agent is any one of silicone emulsion, polyoxypropylene glyceryl ether and stearic acid.
6. The corrugated carton manufacturing method according to claim 1, wherein the third step is specifically configured as: folding the printed matter by a creasing wheel to form longitudinal indentation and transverse indentation, pre-molding and marking a cut line, spraying a solid protective agent at the longitudinal indentation, the transverse indentation and the cut line, drying at 60-80 ℃ for 5-10min, and completely drying to obtain a coated semi-finished product.
7. The method for preparing and processing the corrugated case according to claim 1, wherein in the third step, the amount of the solid protective agent sprayed on the printed matter is 6 to 8g per square meter, and the spraying range extends from the longitudinal indentation, the transverse indentation and the incision line to 3 to 5cm respectively towards the two sides of the printed matter.
8. The corrugated case manufacturing method according to claim 1, wherein the sixth step is configured to glue the case, grind the cut on the cut template with a rubber wheel to a depth of 15-35 μm, and then fold and adhere the cut by a gluing machine to obtain the finished corrugated case.
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