Application of prinsepia utilis royle pomace and preparation method of prinsepia utilis royle pomace paper filaments

Abstract

The invention discloses application of prinsepia utilis royle pomace. The prinsepia utilis royle pomace is used as a core raw material for preparing environment-friendly paper filaments for the first time. The invention further discloses a preparation method of the prinsepia utilis royle pomace paper filament, a process route of firstly forming paper and then slitting is adopted, the preparation method is easy to implement, the problems of environmental pollution and resource waste caused by waste prinsepia utilis royle pomace are solved, high-value utilization of the prinsepia utilis royle pomace which is low in cost and environmentally friendly is achieved, and the method is suitable for industrial production. The novel prinsepia utilis royle pomace paper filament material which is high in strength, good in flexibility and biodegradable is prepared to replace traditional paper or natural fibers. The novel application of the prinsepia utilis royle pomace is developed, and the prepared prinsepia utilis royle pomace paper filament can be used in the fields of high-end handicraft weaving, environment-friendly packaging and the like.

Description

Technical Field

[0001] This invention relates to the use of prickly pear pomace and a method for preparing prickly pear pomace paper filaments. Background Technology

[0002] Currently, the main use of sea buckthorn fruit is for oil extraction. The resulting sea buckthorn fruit residue is usually discarded as waste, burned, or used only as low-grade feed / fertilizer. This low utilization rate may cause environmental pollution and resource waste.

[0003] The paper filaments or similar natural fibers (such as raffia, hemp fiber, and wood pulp fiber) currently on the market are mainly derived from wood, specific crops, or imports, which may have problems such as high cost, resource scarcity, pollution during the production process, or limited performance.

[0004] Currently, there are no mature technologies or methods for preparing high-performance paper using pomace of *Cercis chinensis* fruit. Existing technologies suffer from problems such as low fiber extraction rate, insufficient fiber strength, complex process flow, high pollution, or inability to achieve continuous production. Summary of the Invention

[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide a use for the prickly pear pomace, using it as a core raw material for preparing environmentally friendly paper filaments for the first time.

[0006] Another objective of this invention is to provide a method for preparing paper filaments from prickly ash fruit pomace. This method is simple, low-cost, and environmentally friendly. Through specific chemical pretreatment and physical processing, this method overcomes the shortcomings of short and weak fruit pomace fibers, and successfully produces paper with high strength, good flexibility, and woven texture.

[0007] One technical solution to achieve the above objective is: the use of *Prickly pear* pomace in the preparation of environmentally friendly paper filaments.

[0008] This invention also provides a method for preparing paper filaments from prickly ash pomace, comprising the following steps: S1, Raw material preparation steps: Collect fresh prickly pear pulp, rinse it with clean water to remove residual fruit oil, pulp and impurities on its surface; then dry the washed prickly pear pulp until its moisture content is less than 10% to obtain dried block prickly pear pulp. S2, Raw material pretreatment step: The dried blocky prickly pear pomace is crushed to obtain prickly pear pomace powder with a particle size range of 20 to 60 mesh. S3, Alkali treatment step: Add 8-12 times its weight of alkaline solution to the prickly pear pomace powder, heat and stir at 80-95℃ for 2-4 hours to fully soften the fibers in the prickly pear pomace and remove impurities. S4, Washing step: Wash the reaction product after alkali treatment repeatedly with water until neutral to obtain pure sea buckthorn fiber; S5, Pulping step: Pulping the prickly pear fiber, controlling the freeness between 25-40°SR, to obtain prickly pear fiber pulp with good papermaking properties; S6, Reinforcing treatment step: Add 3%-8% of the reinforcing agent relative to the dry fiber weight to the prickly pear fiber pulp and stir evenly; S7, Molding Step: The prickly pear fiber pulp, which is mixed evenly with the reinforcing agent, is formed into a wet paper web through an extrusion device; S8, Drying step: Dry the formed wet paper web at 50-70℃ for 3-5 hours to obtain the paper filaments of the prickly pear fruit residue; S9, Slitting step: After drying, rolls or sheets of *Gnaphalium affine* pulp paper are slit into paper strips or paper shreds to obtain *Gnaphalium affine* pulp paper shreds.

[0009] In the above-mentioned method for preparing paper filaments from prickly ash pomace, in step S3, the concentration of the alkaline solution is 3%-8%.

[0010] In the above-mentioned method for preparing paper filaments from prickly ash pomace, in step S3, the alkaline solution is NaOH solution.

[0011] In the above-mentioned method for preparing paper filaments from prickly ash pomace, in step S6, the reinforcing agent is a natural polysaccharide reinforcing agent.

[0012] In the above-mentioned method for preparing paper filaments from prickly ash pomace, the natural polysaccharide reinforcing agent is polyacrylamide (PAM).

[0013] The above-mentioned method for preparing *Prickly pear* pomace paper filaments, wherein the tensile strength of the *Prickly pear* pomace paper filaments is greater than or equal to 7 NMPa.

[0014] In the above-mentioned method for preparing paper filaments from prickly ash pomace, step S9 involves slitting using a slitting machine, a longitudinal slitting machine, or a rewinding device equipped with precision blades.

[0015] In the above-mentioned method for preparing paper filaments from *Gnaphalium affine* pomace, in step S9, the width of the paper filaments from *Gnaphalium affine* pomace is 2 mm to 5 mm.

[0016] The present invention also provides the application of the prickly pear pulp paper filaments prepared by the above preparation method in the weaving of high-end handicrafts and environmentally friendly packaging.

[0017] The technical solution of this invention, which utilizes the pomace of *Prickly ash* fruit and its preparation method for paper filaments, proposes for the first time the use of *Prickly ash* fruit pomace as the core raw material for preparing environmentally friendly paper filaments. It solves the environmental pollution and resource waste problems caused by the disposal of *Prickly ash* fruit pomace, providing a low-cost, environmentally friendly method for the high-value utilization of this pomace. It produces a novel paper filament material with high strength, good flexibility, and biodegradability to replace traditional paper or natural fibers. This opens up new applications for *Prickly ash* fruit pomace and provides applications for this paper in high-end craft weaving, environmentally friendly packaging, and other fields. Furthermore, the forming of the *Prickly ash* fruit pomace paper filaments in this invention is not direct spinning, but rather adopts a "paper-making first, then slitting" process, which is mature, reliable, and easy to implement. Attached Figure Description

[0018] Figure 1 This is a flowchart of a method for preparing paper filaments from prickly ash fruit residue according to the present invention. Detailed Implementation

[0019] To enable those skilled in the art to better understand the technical solution of the present invention, its specific embodiments will be described in detail below with reference to the accompanying drawings.

[0020] The pomace of the Chinese spiny prickly pear is usually discarded, burned, or used only as low-grade feed / fertilizer, resulting in low utilization and causing environmental pollution and resource waste. This application proposes for the first time to use the pomace of the Chinese spiny prickly pear as the core raw material for preparing environmentally friendly paper filaments.

[0021] Please see Figure 1 An embodiment of the present invention provides a method for preparing paper filaments from prickly ash pomace, comprising the following steps: S1, Raw material preparation steps: Collect fresh prickly pear pulp, rinse with clean water to remove residual fruit oil, pulp and impurities on its surface; then dry the washed prickly pear pulp until its moisture content is less than 10% (by weight) to obtain dried block prickly pear pulp for long-term storage and subsequent crushing; the drying temperature should be controlled at 60-80℃. S2, Raw material pretreatment step: Use a conventional pulverizer to pulverize the dried blocky prickly pear pomace to obtain prickly pear pomace powder with a particle size range of 20 to 60 mesh. S3, Alkali treatment step: Add 8-12 times its weight of alkaline solution to the prickly pear pomace powder. The concentration of the alkaline solution is 3%-8%. Heat and stir at 80-95℃ for 2-4 hours to fully soften the fibers in the prickly pear pomace and remove impurities. S4, Washing step: Wash the reaction product after alkali treatment repeatedly with water until neutral to obtain pure sea buckthorn fiber; S5, Pulping step: Pulping the prickly pear fiber, controlling the freeness between 25-40°SR, to obtain prickly pear fiber pulp with good papermaking properties; S6, Enhancement treatment step: Add 3%-8% of the reinforcing agent relative to the dry fiber weight to the prickly pear fiber pulp and stir evenly; the reinforcing agent is a natural polysaccharide reinforcing agent; S7, Molding Step: The prickly pear fiber pulp, which is mixed evenly with the reinforcing agent, is formed into a wet paper web through an extrusion device; S8, Drying step: Dry the formed wet paper web at 50-70℃ for 3-5 hours to obtain the paper filaments of the prickly pear fruit residue; S9, Slitting Step: The dried rolls or sheets of *Prickly pear* pulp paper are slit into paper strips or shreds to obtain *Prickly pear* pulp paper shreds. Slitting is performed using a slitting machine, a longitudinal slitting machine, or a rewinding device equipped with precision blades. The width of the *Prickly pear* pulp paper shreds is 2mm to 5mm. The shred width can be adjusted according to the final application requirements.

[0022] Tensile strength test: Assemble the appropriate fixtures onto the base and sensor of the tensile testing machine. Take one paper filament sample, fix the upper half of the sample with the fixture on the sensor, then lower the sensor to the appropriate position and fix the lower half of the sample with the fixture on the base. Be careful not to apply a pre-existing separation force to the sample using the upper and lower fixtures. Set the sensor's moving speed to 150 mm / min, start the test, and stop the test when the paper filament completely breaks. Record the peak value of the separation force and remove the sample.

[0023] The paper filaments made from prickly pear pulp have a tensile strength greater than or equal to 7 N MPa, are flexible and can be woven, and can be used in high-end craft weaving and environmentally friendly packaging.

[0024] In the preparation method of the paper filaments of the present invention, the paper filaments are not directly spun, but are formed by adopting the process path of "first forming paper and then cutting". This path is mature, reliable and easy to implement. Steps S2-S8 constitute the process of making thin paper. When cutting, the required paper filaments of the prickly pear fruit can be cut as needed.

[0025] In summary, this invention, for the first time, proposes using *Prickly pear* pomace as a core raw material for preparing environmentally friendly paper filaments. The method for preparing *Prickly pear* pomace paper filaments in this invention solves the environmental pollution and resource waste problems caused by discarding *Prickly pear* pomace, and is a low-cost, environmentally friendly method for the high-value utilization of *Prickly pear* pomace. It produces a novel *Prickly pear* pomace paper filament material with high strength, good flexibility, and biodegradability, which can replace traditional paper or natural fibers. This opens up new applications for *Prickly pear* pomace; the prepared *Prickly pear* pomace paper filaments can be used in high-end craft weaving, environmentally friendly packaging, and other fields.

[0026] Those skilled in the art should recognize that the above embodiments are merely illustrative of the present invention and are not intended to limit the present invention. Any variations or modifications to the above embodiments that are within the spirit and essence of the present invention will fall within the scope of the claims of the present invention.

Claims

1. A use of prickly ash fruit residue, characterized in that, The prickly pear pomace is used to prepare environmentally friendly paper filaments.

2. A method for preparing paper filaments from prickly ash pomace, characterized in that, Includes the following steps: S1, Raw material preparation steps: Collect fresh prickly pear pulp, rinse it with clean water to remove residual fruit oil, pulp and impurities on its surface; then dry the washed prickly pear pulp until its moisture content is less than 10% to obtain dried block prickly pear pulp. S2, Raw material pretreatment step: The dried blocky prickly pear pomace is crushed to obtain prickly pear pomace powder with a particle size range of 20 to 60 mesh. S3, Alkali treatment step: Add 8-12 times its weight of alkaline solution to the prickly pear pomace powder, heat and stir at 80-95℃ for 2-4 hours to fully soften the fibers in the prickly pear pomace and remove impurities. S4, Washing step: Wash the reaction product after alkali treatment repeatedly with water until neutral to obtain pure sea buckthorn fiber; S5, Pulping step: Pulping the prickly pear fiber, controlling the freeness between 25-40°SR, to obtain prickly pear fiber pulp with good papermaking properties; S6, Reinforcing treatment step: Add 3%-8% of the reinforcing agent relative to the dry fiber weight to the prickly pear fiber pulp and stir evenly; S7, Molding Step: The prickly pear fiber pulp, which is mixed evenly with the reinforcing agent, is formed into a wet paper web through an extrusion device; S8, Drying step: Dry the formed wet paper web at 50-70℃ for 3-5 hours to obtain the prickly pear pulp paper; S9, Slitting step: After drying, rolls or sheets of *Gnaphalium affine* pulp paper are slit into paper strips or paper shreds to obtain *Gnaphalium affine* pulp paper shreds.

3. The method for preparing paper filaments from prickly ash fruit residue as described in claim 2, characterized in that, In step S3, the concentration of the alkaline solution is 3%-8%.

4. The method for preparing paper filaments from *Prickly pear* pomace as described in claim 2, characterized in that, In step S3, the alkaline solution is a NaOH solution.

5. The method for preparing paper filaments from prickly ash fruit pomace as described in claim 2, characterized in that, In step S6, the reinforcing agent is a natural polysaccharide reinforcing agent.

6. The method for preparing paper filaments from prickly ash fruit residue as described in claim 7, characterized in that, The natural polysaccharide enhancer is polyacrylamide.

7. The method for preparing paper filaments from *Prickly pear* pomace as described in claim 2, characterized in that, The tensile strength of the prickly pear pulp paper filaments is greater than or equal to 7 N MPa.

8. The method for preparing paper filaments from prickly ash fruit pomace as described in claim 2, characterized in that, In step S9, a slitting machine, a longitudinal slitting machine, or a rewinding device with precision blades is used for slitting.

9. The method for preparing paper filaments from prickly ash fruit residue as described in claim 2, characterized in that, In step S9, the width of the paper shreds from the prickly pear pulp is 2mm to 5mm.

10. The application of *Prickly pear pomace* filament paper prepared by the preparation method described in claim 2 in high-end handicraft weaving and environmentally friendly packaging.

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