CN110541321A - bubble bag lining paper making process - Google Patents
bubble bag lining paper making process Download PDFInfo
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- CN110541321A CN110541321A CN201910837534.2A CN201910837534A CN110541321A CN 110541321 A CN110541321 A CN 110541321A CN 201910837534 A CN201910837534 A CN 201910837534A CN 110541321 A CN110541321 A CN 110541321A
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21D—TREATMENT OF THE MATERIALS BEFORE PASSING TO THE PAPER-MAKING MACHINE
- D21D1/00—Methods of beating or refining; Beaters of the Hollander type
- D21D1/02—Methods of beating; Beaters of the Hollander type
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F11/00—Processes for making continuous lengths of paper, or of cardboard, or of wet web for fibre board production, on paper-making machines
- D21F11/02—Processes for making continuous lengths of paper, or of cardboard, or of wet web for fibre board production, on paper-making machines of the Fourdrinier type
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F5/00—Dryer section of machines for making continuous webs of paper
- D21F5/02—Drying on cylinders
- D21F5/04—Drying on cylinders on two or more drying cylinders
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
- D21G1/00—Calenders; Smoothing apparatus
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
- D21G1/00—Calenders; Smoothing apparatus
- D21G1/02—Rolls; Their bearings
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
- D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
- D21H21/16—Sizing or water-repelling agents
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H23/00—Processes or apparatus for adding material to the pulp or to the paper
- D21H23/02—Processes or apparatus for adding material to the pulp or to the paper characterised by the manner in which substances are added
- D21H23/22—Addition to the formed paper
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H25/00—After-treatment of paper not provided for in groups D21H17/00 - D21H23/00
- D21H25/04—Physical treatment, e.g. heating, irradiating
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Abstract
The invention provides a manufacturing process of bubble bag lining paper, which comprises the following steps: preparing mixed pulp, preparing a dye solution, mixing pulp making, drying in a vat, preparing a surface glue applying solution, applying glue, drying after application and calendaring, wherein the adopted raw materials are the mixed pulp of bleached sulfate softwood pulp and hypochlorite bleached hardwood pulp, and through controlling a series of process conditions, the folding endurance of the finally prepared liner paper of the air pocket is as high as 85-100 times, the bulk reaches 1.25-1.27 cm3/g, the stiffness of the paper is good, and the touch is thick; meanwhile, the surface strength of the lining paper is 14# wax rod strength, the lining paper is tightly combined with the bubble film, the tearing index of the lining paper reaches 7.4-8.3mN.m2/g, the finished paper is not easy to tear, the color is striking, the color is good, and the paper is a high-quality bubble bag lining paper product.
Description
Technical Field
the invention belongs to the technical field of papermaking, and particularly relates to a bubble bag lining paper making process.
Background
The bubble bag is a popular environment-friendly packaging material at home and abroad at present, has the buffering and shockproof effects due to the bubble film lined in the bubble bag, and can prevent articles from being damaged due to pressing, bumping and falling; meanwhile, the cover of the air bubble bag is damaged as soon as the cover is glued after being coated with the film and cannot be restored after being opened, so that the problems of bag adjustment and goods theft in the express delivery process can be prevented; the surface of the bubble bag is smooth, the bubble bag can be written and printed, and different patterns can be printed according to the requirements of customers. Along with the rapid development of the Taobao industry and the logistics industry, the bubble bag is widely applied to the packaging fields of postal delivery express delivery, international aviation packages, fragile articles, compact discs, jewelry, digital product accessories, certificates, photo frames, clocks and watches and the like.
the lining paper of the bubble bag is used for manufacturing the bubble bag, the lining paper level of the bubble bag made in China at present is relatively low, the hue, the bulk, the smoothness, the folding strength, the bonding strength of the bubble bag and the like of a product are different from the advanced technology in China, and the lining paper of the bubble bag at present has the following defects: (1) the folding resistance is poor; (2) the bonding strength with the bubble bag is low; (3) bad hue, large color difference (4) small bulk, low smoothness.
Disclosure of Invention
in order to solve the problems in the prior art and further optimize the prior art, the invention provides a manufacturing process for making bubble pocket lining paper, which aims to achieve the following purposes:
1. the folding resistance of the lining paper of the bubble bag is improved;
2. the bonding strength of the lining paper of the bubble bag and the bubble bag is improved;
3. the hue of the lining paper of the bubble bag is stabilized, and the color is consistent;
4. the bulk of the lining paper of the bubble bag is improved, and the fineness of the paper surface is improved.
in order to solve the technical problems, the technical scheme adopted by the invention is as follows:
the manufacturing process of the bubble bag lining paper is characterized by comprising the following steps: preparing mixed slurry, preparing a dye solution, mixing and pulping, drying in a vat, preparing a surface sizing solution, sizing, drying after-drying, calendaring and rewinding;
the mass ratio of bleached sulfate softwood pulp to hypochlorite bleached hardwood pulp is 4-4.5: 5.5-6;
The preparation of the mixed pulp comprises the steps of bleaching sulfate softwood pulp with the fiber length of 2.5-2.7mm and the ISO whiteness of 86-87%, bleaching hardwood pulp with the hypochlorite with the fiber length of 0.75-0.80mm and the ISO whiteness of 80%, and pulping degree of the mixed pulp of 34-36 OSR; the pulping power of the mixed pulp is 160-;
The weight ratio of softened water to dye is 2000:70-75, the dye is a mixed dye of acid golden yellow G and direct yellow PG, and the weight ratio of acid golden yellow G to direct yellow PG is 60: 12-15;
preferably, the weight ratio of demineralized water to dye is 2000: 72; the weight ratio of the acid golden yellow G to the direct yellow PG is 60: 12;
The adding amount of the dye solution accounts for 1.5-1.6% of the weight of the mixed pulp; adopting a fourdrinier vat paper machine, wherein the concentration of the AKD neutral sizing agent is more than or equal to 15 percent, the dosage of each ton of paper is 13-15kg, and the concentration of the screened paper is controlled to be 0.75-0.81 percent;
The large cylinder drying is carried out by adopting a Yankee dryer for two-step drying, wherein the diameter of a cylinder No. 1 is 3.0m, the pressure is 0.4MPa, and the temperature of a paper feeding position is 90-92 ℃; the diameter of the 2# cylinder is 2.5m, the pressure is 0.3MPa, the paper feed temperature is 85-86 ℃, and the moisture of paper sheets is 4.9-6.0% after the paper sheets are dried in a vat;
The preparation of the surface sizing solution comprises the steps of preparing a prefabricated sizing solution, wherein the weight ratio of water to corn starch is (9-10): 1, boiling at 98 ℃ for 20 minutes to obtain a prefabricated glue solution with the concentration of 9.5-10.5 percent;
the preparation of the surface sizing solution also comprises the step of adding a dye solution again, wherein the mass ratio of the dye solution to the prefabricated sizing solution is 46-48: 2000;
Preferably, the mass ratio of the dye solution to the prefabricated glue solution is 47: 2000;
The sizing pressure is 0.3-0.4MPa, the sizing amount is 5.5-5.8g/m, the sizing temperature is 75-80 ℃, and the water content after sizing is 10.0-10.5%;
drying, wherein the moisture content after drying is 4.0-4.5%;
the calendering, the upper and lower rollers are steel rollers, the pressure is 2.0-3.0MPa, the smoothness of paper (back side) is 35-43s, and the difference of cross-web thickness of paper rollers is not more than 4 g/m;
The rewinding is carried out at the speed of 300m/min, and the water content is controlled to be 4.5-5.0%.
The invention relates to a paper making process of bubble bag lining paper, which adopts specific bleached sulfate softwood pulp and hypochlorite bleached hardwood pulp as raw materials, strictly controls the process conditions of pulp proportioning, pulping, vat drying, calendaring, sizing and the like through dyeing in pulp and surface sizing liquid color compensation treatment, and realizes the excellent effects of high folding strength of the prepared bubble bag lining paper, high bonding strength with a bubble bag, high bulk, good hue of finished paper, fine paper surface and consistent color, thus being a high-quality bubble bag lining paper product.
by adopting the technical scheme, the invention has the beneficial effects that:
1. the folding strength of the lining paper of the air bubble bag prepared by the process is high, and can reach 85-100 times according to the test standard of GB/T457-2008 determination of the folding strength of paper and paperboard;
2. The surface strength of the bubble bag lining paper prepared by the process is 14# wax rod strength, so that the bubble bag lining paper has high bonding strength with a bubble bag and is tightly bonded with a bubble film; meanwhile, the tearing index of the lining paper reaches 7.4-8.3mN.m2/g, and the finished paper is not easy to tear;
3. The bubble bag lining paper prepared by the process has good hue, striking color and small hue difference among paper of the same batch, and is detected by a colorimeter, wherein the L value of the front surface of the paper is 82.27-83.55, the a value is 7.15-8.24, and the b value is 60.9-61.29; the reverse side of the paper has an L value of 82.13-83.65, an a value of 6.77-8.99 and a b value of 60.61-61.00;
4. The bubble bag lining paper prepared by the process has high bulk, the bulk is 1.25-1.27 cm3/g, the paper has good stiffness and thick touch;
5. The bubble bag lining paper prepared by the invention has high smoothness on one surface and low smoothness on the other surface, the smoothness difference between the front surface and the back surface is large, the smoothness of one surface reaches 37-41S, the smoothness of the other surface reaches 20-22S, and the bubble bag lining paper is more easily combined with a bubble bag to enhance the combination strength;
6. the bubble bag lining paper prepared by the invention has good paper tension, and the longitudinal/transverse tensile strength reaches 66-70N (longitudinal)/44-53N (transverse); the paper formation uniformity is good, the fiber flocculation is less, and the fiber dispersion is uniform;
7. on the basis of the advantages, the water absorption value of the bubble bag lined paper prepared by the invention is 25-30g/m, and the paper sheet forming is better, the buckling is avoided, and the folding is avoided; the tightness of the bubble bag lining paper is 0.78-0.8 g/cm through thin wall cultivation, and the quantitative weight is 91-92 g/m;
the product has higher added value, lays a foundation for enterprises to participate in market competition and broaden sales channels, can replace imported paper, increase export earnings, improve the variety and structure of companies, and improve the international market competitiveness and occupation rate.
DETAILED DESCRIPTION OF EMBODIMENT (S) OF INVENTION
The invention is further illustrated by the following examples:
Example 1 manufacturing Process for bubble pocket liner paper
The process comprises the following steps: preparing mixed slurry, preparing a dye solution, mixing and pulping, drying in a vat, preparing a surface sizing solution, sizing, post-drying, calendaring and rewinding:
1. preparation of Mixed slurry
Bleached sulfate softwood pulp with the fiber length of 2.52mm and the ISO whiteness of 86 percent and bleached hardwood pulp with the fiber length of 0.75mm and the ISO whiteness of 80 percent hypochlorite are jointly crushed by a hydrapulper, transferred to a front beating pool, passed through a 508 double-disc mill beater, the beating power is controlled to be 160kwh, the beating current is 310A, the beating concentration is controlled to be 3.4 percent, the beating degree is 34 DEG SR, and transferred to a back beating pool to prepare mixed pulp;
The mass ratio of the bleached sulfate softwood pulp to the hypochlorite bleached hardwood pulp is 4: 6;
2. Preparation of dye solution
Adding dye and softened water into a decocting tank, heating and dissolving to obtain a dye solution for later use, wherein the weight ratio of the added softened water to the dye is 2000: 72;
the dye is a mixture of acid golden yellow G and direct yellow PG, and the weight ratio of the acid golden yellow G to the direct yellow PG is 60: 12;
3. Mixed pulp
starting the automatic batching equipment, pumping the mixed pulp of the bleached sulfate softwood pulp and the hypochlorite bleached hardwood pulp, adding the dye solution, and fully mixing and stirring uniformly. Pumping the mixed pulp to a pre-papermaking pool through a pulp pump, uniformly mixing, sequentially transferring to a pulp stabilizing box by adopting a long-net large-cylinder paper machine, stabilizing the pressure of the pulp, pumping the pulp to a desander by using a fan pump for desanding, purifying by using a pressure screen, transferring the purified pulp to a head box, continuously adding an AKD neutral sizing agent at the head box, wherein the concentration is 15 percent, the dosage of paper per ton is 14kg, then transferring to a head box, papermaking, controlling the online concentration to be 0.75 percent, and finally, performing online forming and squeezing;
the adding amount of the dye solution accounts for 1.6 percent of the weight of the mixed slurry;
4. vat drying
The drying step is called as a front drying part, and the drying step is carried out by using a Yankee dryer, wherein the diameter of a cylinder No. 1 is 3.0m, the pressure is 0.4MPa, and the temperature of a paper feeding part is 90 ℃; the diameter of the 2# cylinder is 2.5m, the pressure is 0.3MPa, the paper feeding temperature is 85 ℃, and the moisture of paper sheets is 6.0% after the paper sheets are dried in a big cylinder;
5. Preparation of surface sizing solutions
Adding water into the dissolving tank, stirring, slowly adding corn starch, stirring, slowly heating for decocting, and keeping the temperature for 20 minutes when the temperature is raised to 98 ℃ to obtain a prefabricated glue solution with the concentration of 9.5%; the weight ratio of the added water to the added corn starch is 9.5: 1;
adding the dye solution into the prefabricated glue solution again, and uniformly stirring to obtain a surface sizing solution for later use; the mass ratio of the dye solution added again to the prefabricated glue solution is 47: 2000;
6. sizing
Conveying the surface sizing solution prepared in the step 5 to a sizing press by using a pump, enabling paper sheets to pass through the sizing press, controlling the pressure of the sizing press to be 0.3MPa, controlling the sizing amount to be 5.5g/m, carrying out surface sizing at the sizing temperature of 75 ℃, and then drying to control the water content after sizing to be 10.0%;
7. post-drying
the paper sheet enters a post-drying part from the sizing part and is dried again by a drying cylinder, and the moisture content is 4.0 percent after drying;
8. Calendering
Feeding the dried paper into a two-roller calender, wherein an upper press roller and a lower press roller are steel rollers, performing hard calendering, controlling the pressure to be 3.0Mpa, controlling the paper to be smooth (reverse side) for 35-40s, controlling the difference of the cross-web thickness of the paper rollers to be less than or equal to 4g/m, ensuring the cross-web smoothness of the paper rollers, and preparing the bubble bag lining paper after calendering;
7. rewinding
the rewinding speed per hour is controlled to be 300m/min, the moisture is controlled to be 4.5%, the rewinding end face is neat, the paper surface is flat, the paper roll is fully wrapped by plastic cloth, the sealing is good, and the paper roll is kept not to be in contact with the outside;
the main technical indexes of the finished product of the liner paper of the blister pack manufactured in the embodiment 1 are detected, and the detection results are shown in a table 1;
TABLE 1 air pocket liner paper finished product for main technical index
the air pocket liner paper prepared in the example 1 has the advantages that the smoothness of finished paper (reverse/normal) is 37/20S, the bulk is 1.27cm3/g, the folding endurance is 85 times, the tearing index reaches 7.4mN.m2/g, the paper formation is good, and the paper is not easy to tear; the surface strength can reach the strength of No. 14 wax rod, and the surface strength is tightly combined with the bubble film.
Example 2 manufacturing Process for bubble pocket liner paper
the process comprises the following steps: preparing mixed slurry, preparing a dye solution, mixing and pulping, drying in a vat, preparing a surface sizing solution, sizing, drying after-drying, calendaring and rewinding;
1. preparation of Mixed slurry
Bleached sulfate softwood pulp with the fiber length of 2.65mm and the ISO whiteness of 87 percent and bleached hardwood pulp with the fiber length of 0.80mm and the ISO whiteness of 80 percent hypochlorite are jointly crushed by a hydrapulper, transferred to a front beating pool, passed through a 508 double-disc mill beater, the beating power is controlled to be 165kwh, the beating current is 315A, the beating concentration is 3.6 percent, the beating degree is 36 DEG SR, and transferred to a back beating pool to prepare mixed pulp;
the mass ratio of the bleached sulfate softwood pulp to the hypochlorite bleached hardwood pulp is 4.5: 5.5;
2. preparation of dye solution
Adding a dye and softened water into a decocting tank, heating and dissolving to obtain a dye solution for later use, wherein the weight ratio of the added softened water to the dye is 2000: 72;
the dye is a mixture of acid golden yellow G and direct yellow PG, and the weight ratio of the acid golden yellow G to the direct yellow PG is 60: 12;
3. mixed pulp
Starting the automatic batching equipment, pumping the mixed pulp of the bleached sulfate softwood pulp and the hypochlorite bleached hardwood pulp, adding the dye solution, and fully mixing and stirring uniformly. Pumping the mixed pulp to a pre-papermaking pool through a pulp pump, uniformly mixing, sequentially transferring to a pulp stabilizing box by adopting a long-net large-cylinder paper machine to stabilize the pressure of the pulp, pumping the pulp to a desander by using a fan pump to remove sand, then purifying by using a pressure screen, transferring the purified pulp to a high-position box, continuously adding an AKD neutral sizing agent at the high-position, wherein the concentration is 15 percent, the consumption per ton of paper is 14kg, then transferring to a pulp flowing box to carry out pulp papermaking, controlling the online concentration to be 0.81 percent, and finally carrying out online forming and squeezing;
the adding amount of the dye solution accounts for 1.6 percent of the weight of the mixed slurry;
4. Vat drying
also called the front drying part, a Yankee dryer is used for two-step drying, the diameter of 1# is 3.0m, the pressure is 0.4MPa, the temperature of a paper feeding part is 92 ℃, the diameter of 2# is 2.5m, the pressure is 0.3MPa, and the temperature of the paper feeding part is 85 ℃. The moisture content of the dried paper sheet is 4.9%;
5. preparation of surface sizing solutions
Adding water into a dissolving tank, stirring, slowly adding corn starch into the dissolving tank, stirring uniformly, slowly heating for decocting, keeping the temperature for 20 minutes when the temperature is raised to 98 ℃, and preparing a prefabricated glue solution with the concentration of 10.0%; the weight ratio of the added water to the added corn starch is 9.0: 1;
Adding the dye solution into the prefabricated glue solution again, and uniformly stirring to obtain a surface sizing solution for later use; the mass ratio of the dye solution added again to the prefabricated glue solution is 47: 2000;
6. sizing
Conveying the surface sizing solution prepared in the step 5 to a sizing press by using a pump, enabling paper sheets to pass through the sizing press, controlling the pressure of the sizing press to be 0.3MPa, controlling the sizing amount to be 5.8g/m, carrying out surface sizing at the sizing temperature of 75 ℃, and then drying to control the water content after sizing to be 10.5%;
7. post-drying
The paper sheet enters a post-drying part from the sizing part and is dried by a drying cylinder, and the moisture content is 4.5 percent after drying;
8. Calendering
feeding the dried paper into a two-roller calender, wherein an upper press roller and a lower press roller are both provided with steel rollers, performing hard calendering, controlling the pressure to be 3.0Mpa, controlling the paper to be smooth (reverse side) for 40-43s, controlling the difference of the cross-web thickness of the paper rollers to be less than or equal to 4g/m, ensuring the cross-web smoothness of the paper rollers, and preparing the bubble bag lining paper after calendering;
7. Rewinding
the rewinding speed per hour is controlled to be 300m/min, the moisture is controlled to be 4.8%, the rewinding end face is neat, the paper surface is flat, the paper roll is fully wrapped by plastic cloth, the sealing is good, and the paper roll is kept not to be in contact with the outside;
the main technical indexes of the finished product of the liner paper of the blister pack manufactured in the embodiment 2 are detected, and the detection results are shown in a table 2;
TABLE 2 air pocket liner paper finished product carries out main technical indexes
the bubble bag lining paper prepared in example 2 has a hue b of 60.9/60.61, can achieve a smoothness of finished paper (reverse/normal) of 41/22S, a tensile force (longitudinal/transverse) of 70/53N, a folding endurance of 97 times, a tear index of 8.3mN.m2/g, a high smoothness of finished paper, a good folding endurance, a high tear endurance, and tight bonding with a bubble film, and can be widely applied to cushion packaging of electronic products, plastic products, ceramic products, glass products and the like.
finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that various changes, modifications and substitutions can be made without departing from the spirit and scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The manufacturing process of the bubble bag lining paper is characterized by comprising the following steps: preparing mixed slurry, preparing dye solution, mixing and pulping, drying in a vat, preparing surface sizing solution, sizing, drying after-drying and calendaring.
2. The papermaking process according to claim 1, wherein the mixed mass ratio of the bleached sulfate softwood pulp to the bleached hardwood pulp is 4-4.5: 5.5-6.
3. The papermaking process according to claim 1, wherein the mixed pulp is prepared such that the bleached kraft softwood pulp has a fiber length of 2.5 to 2.7mm, the hypochlorite bleached hardwood pulp has a fiber length of 0.75 to 0.80mm, and the mixed pulp has a freeness of 34 to 36 ° SR.
4. the papermaking process according to claim 1, wherein the vat drying is carried out such that the moisture content of the paper sheet after vat drying is 4.9-6.0%.
5. the papermaking process according to claim 1, characterized in that calendering, with upper and lower rolls both being steel rolls, with a pressure of 2.0-3.0MPa, a smoothness of the reverse side of the paper of 35-43s, and a difference in cross-web thickness of the paper rolls being not greater than 4 g/m.
6. The papermaking process according to claim 1, wherein the preparation of the surface sizing solution comprises the preparation of a pre-sizing solution, wherein the weight ratio of water to corn starch of the pre-sizing solution is 9-10: 1, the concentration of the preformed gum solution is 9.5-10.5%.
7. The papermaking process according to claim 1, wherein the weight ratio of the dye solution, the softened water and the dye is 2000:72-75, the dye is a mixed dye of acid golden yellow G and direct yellow PG, and the weight ratio of the acid golden yellow G to the direct yellow PG is 60: 12-15.
8. the papermaking process according to claim 1, wherein the mixed pulp is characterized in that the addition amount of the dye solution accounts for 1.5-1.6% of the weight of the mixed pulp; the preparation of the surface sizing solution also comprises the step of adding a dye solution, wherein the mass ratio of the dye solution to the prefabricated sizing solution is 46-48: 2000.
9. the papermaking process according to claim 4, wherein the vat drying is carried out in two steps by using a Yankee dryer, the diameter of a No. 1 cylinder is 3.0m, the pressure is 0.4MPa, and the temperature of a paper feed is 90-92 ℃; the diameter of the 2# cylinder is 2.5m, the pressure is 0.3MPa, and the temperature of a paper feed part is 85-86 ℃.
10. the papermaking process according to claim 1, wherein said sizing is performed at a sizing pressure of 0.3-0.4MPa, a sizing amount of 5.5-5.8g/m, a sizing temperature of 75-80 ℃, and a moisture content after sizing of 10.0-10.5%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910837534.2A CN110541321A (en) | 2019-09-05 | 2019-09-05 | bubble bag lining paper making process |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910837534.2A CN110541321A (en) | 2019-09-05 | 2019-09-05 | bubble bag lining paper making process |
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| CN110541321A true CN110541321A (en) | 2019-12-06 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113832775A (en) * | 2021-07-23 | 2021-12-24 | 广州造纸股份有限公司 | Environment-friendly orange bubble bag envelope paper and preparation method thereof |
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- 2019-09-05 CN CN201910837534.2A patent/CN110541321A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113832775A (en) * | 2021-07-23 | 2021-12-24 | 广州造纸股份有限公司 | Environment-friendly orange bubble bag envelope paper and preparation method thereof |
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Application publication date: 20191206 |
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