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CN-122013596-A - Disposable hand-tearing garbage coil paper base formula and preparation method thereof

CN122013596ACN 122013596 ACN122013596 ACN 122013596ACN-122013596-A

Abstract

The invention discloses a disposable hand-tearing garbage paper base formula, which comprises base paper, a latent hardening adhesive layer and a micro-rough oil-proof layer, wherein the latent hardening adhesive layer and the micro-rough oil-proof layer are sequentially coated on the surface of the base paper, the adhesive layer consists of a film forming base material, ammonium bicarbonate, an ammonium zirconium carbonate solution and a volatile alkali agent, the pH value of the system is 9.0-9.8, the oil-proof layer consists of vinyl silicone oil, a micro-rough regulator, hydrogen-containing silicone oil and a catalyst, and the preparation method comprises the steps of drying at a low temperature after sizing to maintain an alkaline latent state, pre-curing the coating oil-proof layer, cutting and stacking, and then feeding the cut oil-proof layer into a die for hot press molding. The high temperature of hot pressure triggers ammonium bicarbonate to decompose, drives the pH value of the system to reverse, and promotes the crosslinking hardening of ammonium zirconium carbonate and the film forming base material. The invention solves the contradiction between easy rupture of deep drawing and insufficient rigidity of the finished product by utilizing a chemical latency mechanism, reduces interlayer friction by a micro-rough surface structure, ensures that the finished product has excellent rigidity and anti-adhesion performance, and realizes light and loose hand tearing separation.

Inventors

  • WANG XIA

Assignees

  • 江苏维宸复合材料有限公司

Dates

Publication Date
20260512
Application Date
20260320

Claims (10)

  1. 1. The disposable hand-tearing garbage disc paper base formula is characterized in that the paper base comprises base paper, and a latent hardening glue applying layer and a micro-rough oil-proof layer which are sequentially coated on the surface of the base paper; the latent hardening sizing layer is formed by solidifying latent hardening sizing liquid containing the following components in parts by weight: 100 parts of film forming base material; 3.0-6.0 parts of ammonium bicarbonate; 10.0-15.0 parts of ammonium zirconium carbonate solution; A volatile alkaline agent for adjusting the pH of the system to 9.0-9.8; the micro-rough oil-proof layer is formed by solidifying micro-rough oil-proof coating liquid containing the following components in parts by weight: 100 parts of vinyl silicone oil; 1.5-3.0 parts of micro-roughness regulator; 1.2-2.0 parts of hydrogen silicone oil; 1.5-2.0 parts of platinum catalyst solution; 0.04-0.05 part of inhibitor.
  2. 2. The disposable hand-tearing garbage bobbin paper based formula of claim 1, wherein the film forming base material is polyvinyl alcohol or oxidized starch, the active ingredient of the ammonium zirconium carbonate solution is 19.0% -21.0% in terms of zirconium dioxide, and the volatile alkaline agent is ammonia water.
  3. 3. The disposable hand-tearing waste bobbin paper based formula of claim 1, wherein the microroughness regulator is hydrophilic fumed silica or calcined diatomaceous earth, and the molar ratio of Si-H/Vi of the hydrogen-containing silicone oil is 1.5:1-2.0:1.
  4. 4. The disposable, hand-tearing, garbage paper-based formulation of claim 1, wherein the single-sided dry weight coating weight of the latent hardening sizing layer is 0.5-0.8g/m 2 , and the coating weight of the microrough oil-repellent layer is 0.8-1.2g/m 2 .
  5. 5. The finished product prepared by the disposable hand-tearing waste bobbin paper based formulation of any one of claims 1 to 4, wherein the finished product has a paper surface pH of 6.8 to 7.2 and an interlayer peel force of 0.14 to 0.19N/25mm.
  6. 6. A method of making a disposable, hand-tearing waste bobbin-based formulation in accordance with claim 1, comprising the steps of: s1, manufacturing a wet paper web of base paper, and drying to obtain the base paper; S2, coating the latent hardening sizing liquid on the surface of the base paper obtained in the step S1, and drying at a controlled temperature to enable the sizing layer to be in an alkaline latent state, so as to obtain the collagen-applied paper; s3, coating the micro-rough oil-proof coating liquid on the surface of the collagen paper obtained in the step S2, and pre-curing at a controlled temperature to obtain a roll paper; S4, cutting the roll paper obtained in the step S3 into paper blanks and stacking a plurality of sheets; s5, delivering the stacked paper blanks obtained in the step S4 into a mould for hot press forming, triggering ammonium bicarbonate to decompose and produce gas and ammonium zirconium carbonate to crosslink and harden by using the mould at high temperature, and demolding to obtain the finished product.
  7. 7. The method for preparing the disposable hand-tearing waste bobbin paper based formulation of claim 6, wherein the method for preparing the latent hardening sizing solution comprises the following steps: Dissolving a film forming substrate in water to prepare a base solution, adding ammonium bicarbonate for dissolution, adjusting the pH value of the system to 9.0-9.8 by using a volatile alkaline agent, and finally adding ammonium zirconium carbonate solution under the stirring state and adjusting the viscosity.
  8. 8. The preparation method of the disposable hand-tearing garbage paper base formula, according to claim 6, is characterized in that the preparation method of the micro-rough oil-proof coating liquid is as follows: Mixing vinyl silicone oil with micro-coarse regulator, high shearing and dispersing, adding hydrogen-containing silicone oil, inhibitor and platinum catalyst solution, mixing homogeneously and defoaming.
  9. 9. The method of preparing a disposable, hand-tearing waste bobbin-based formulation of claim 6, wherein controlling the temperature in step S2 and step S3 comprises: In step S2, the drying temperature is not more than 95 ℃ at the maximum; in the step S3, the pre-curing temperature is 105-115 ℃; The temperature control is used for controlling that ammonium bicarbonate in the sizing layer is not completely decomposed before hot press molding in the step S5.
  10. 10. The method for preparing a disposable hand-tearing waste bobbin paper based formulation of claim 6, wherein the temperature of the mold is 140-170 ℃, the molding pressure is 3.0-5.0MPa, and the dwell time is 2-5 seconds.

Description

Disposable hand-tearing garbage coil paper base formula and preparation method thereof Technical Field The invention relates to the technical field of paper product processing, in particular to a disposable hand-tearing garbage disc paper base formula and a preparation method thereof. Background The disposable paper-based container has good biodegradability and recycling value, is widely applied to the fields of household waste collection, restaurant packaging and the like, and particularly, the desktop garbage tray product based on the conversion of high-temperature-resistant silicone oil paper (commonly used in scenes such as an air fryer, baking and the like) is usually required to be provided for consumers in a multi-sheet stacked mode, is peeled off singly during use, is required to have certain structural strength to bear household garbage such as pericarps, paper scraps and the like, and is required to meet the basic use functions of oil proofing, water proofing and seepage proofing so as to meet the bearing requirements of wet household garbage such as pericarp juice and the like. In the existing industrial production system, the manufacturing of the product generally follows the process route of 'base paper coating, drying, cutting and stamping forming', in order to endow the paper with necessary barrier property and physical strength, manufacturers apply functional coating on the surface of the base paper, remove moisture through hot air drying or drying cylinder drying, then roll up, slit the roll paper into sheets, and finally send the sheets into a metal mold to press the planar paper blank into a tray body with a three-dimensional shape through mechanical pressure. This process requires that the paper-based material have both surface properties that accommodate coating and winding and physical deformation requirements for subsequent die stamping. However, in the prior art, when manufacturing a deep-drawn paper product with high stiffness, the problem that the forming processability and the final rigidity of the finished product are difficult to be compatible is faced, in order to ensure that the garbage tray does not collapse when bearing, a high content of cross-linking agent or hardening resin is generally required to be added in the formula to improve the modulus of the paper, but the reinforcing component is often cured and cross-linked due to heat in the drying stage after coating, so that the paper is hardened and loses flexibility before entering the punching process. When the pre-hardened paper is subjected to deep drawing or complex folding in a die, the fiber network cannot adapt to severe deformation stress, brittle fracture or macroscopic cracks are easily generated at the edge or the corner of the bottom of the tray body, the yield is seriously affected, and if the consumption of the hardening agent is reduced to avoid stamping cracking, the problem of forming is solved, but the rigidity of a final finished product is insufficient, and the use experience is soft. Disclosure of Invention Aiming at the defects of the prior art, the invention provides a disposable hand-tearing garbage bobbin paper base formula and a preparation method thereof, and solves the problems that in the hot press forming process of the conventional disposable paper base container, the raw paper is easy to be cracked or the rigidity of a finished product is insufficient due to the fact that sizing and curing time is not matched with a forming process, and the finished product is easy to generate interlayer adhesion and is difficult to separate when stacked and stored. In order to achieve the aim, the invention is realized through the following technical scheme that the disposable hand-tearing garbage disc paper base formula is provided in the first aspect, and the following technical scheme is adopted: the disposable hand-tearing garbage bobbin paper base formula comprises base paper, and a latent hardening glue applying layer and a micro-rough oil-proof layer which are sequentially coated on the surface of the base paper. The latent hardening sizing layer is formed by solidifying latent hardening sizing liquid which comprises, by weight, 100 parts of film forming base materials, 3.0-6.0 parts of ammonium bicarbonate, 10.0-15.0 parts of ammonium zirconium carbonate solution and a volatile alkali agent for adjusting the pH value of the system to 9.0-9.8. The micro-rough oil-proof layer is formed by solidifying micro-rough oil-proof coating liquid which comprises, by weight, 100 parts of vinyl silicone oil, 1.5-3.0 parts of micro-rough regulator, 1.2-2.0 parts of hydrogen-containing silicone oil, 1.5-2.0 parts of platinum catalyst solution and 0.04-0.05 part of inhibitor. By adopting the technical scheme, the invention solves the compatibility problem of the processing performance and the service performance of the paper-based material by utilizing the cooperation of the delayed crosslinking characteristic regu