阅读说明：本技术 一种气泡袋衬纸抄造工艺 (bubble bag lining paper making process ) 是由 杨振永 任怀燕 马炳英 凡菜华 亓彩洁 邵琳淇 杨安全 于 2019-09-05 设计创作，主要内容包括：本发明提供一种气泡袋衬纸抄造工艺,该工艺包括以下步骤：制备混合浆料、制备染料溶液、混合抄浆、大缸干燥、制备表面施胶液、施胶、后干燥、压光,所采用的原料是漂白硫酸盐针叶木浆浆料与次氯酸盐漂白阔叶木浆的混合浆料,通过控制一系列工艺条件,最终制备的气泡袋衬纸耐折度高达85-100次,松厚度达到1.25-1.27 cm<Sup>3</Sup>/g,纸张挺度好,触感厚实；同时衬纸表面强度为14#蜡棒强度,与气泡膜结合紧密,衬纸的撕裂指数达到7.4-8.3mN.m<Sup>2</Sup>/g,成纸不容易被撕破,颜色醒目,色相好,是一种优质的气泡袋衬纸制品。(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.)

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%.

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: