Flame-retardant kraft paper
By incorporating a flame-retardant layer and an intermediate layer into kraft paper, and utilizing a combination of graphite coating and thermal conductive sheets, flame-retardant, wear-resistant, and waterproof effects are achieved. This solves the problem of kraft paper being easily damaged in a fire, and improves the safety and lifespan of documents.
Patent Information
- Application Number
- CN202520059633.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-10
- Publication Date
- 2025-12-12
- Estimated Expiration
- 2035-01-10
AI Technical Summary
Kraft paper is easily damaged in a fire, leading to the loss of important documents.
A flame-retardant layer assembly, including a graphite coating and a thermally conductive layer, is incorporated into kraft paper. Graphite particles transfer heat to the thermally conductive sheet to prevent the paper from burning. The heat insulation layer isolates the paper from high temperatures, and the intermediate waterproof and abrasion-resistant layer enhances the paper's waterproofness and abrasion resistance.
It effectively prevents kraft paper from burning, reduces document damage caused by fire, improves water resistance and abrasion resistance, and avoids major losses.
Smart Images
Figure CN223660510U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to paper material technical field more particularly to a kraft paper with flame -retardant. BACKGROUND
[0002] Kraft paper is a kind of paper with tough texture and strong tensile force, is the paper or paperboard produced by kraft paper process production chemical pulp, is named because of kraft paper pulping process, kraft paper has higher tear resistance and tensile strength, can withstand greater external force, kraft paper also has good folding resistance and wear resistance, is not easy to break, is commonly used packaging paper, can be used to make paper bag, envelope, volume etc.
[0003] Kraft paper is often used as envelope, volume etc. The packaging paper of document, in daily life, due to improper storage, important documents are often destroyed due to fire, thereby causing significant loss, therefore need to propose a kraft paper with flame -retardant to solve the above problems. CONTENT OF UTILITY MODEL
[0004] In order to overcome the above-mentioned defects of the prior art, the utility model provides a kraft paper with flame -retardant to solve the problems in the above background art.
[0005] To achieve the above object, the utility model provides the following technical scheme: a kraft paper with flame -retardant, including fire -retardant layer subassembly, the bottom of fire -retardant layer subassembly is fixedly connected with intermediate layer subassembly, the bottom of intermediate layer subassembly is fixedly connected with inner layer subassembly, fire -retardant layer subassembly includes first base layer paper, the bottom of first base layer paper is fixedly connected with graphite coating, the bottom of graphite coating is fixedly connected with heat conduction layer, the bottom of heat conduction layer is fixedly connected with first adhesive layer, and the material of first base layer paper is sulphate wood pulp.
[0006] Further, the graphite coating includes a connecting layer, and the top of the connecting layer is provided with graphite particles.
[0007] Further, the heat conduction layer includes a thermal insulation layer, and the top of the thermal insulation layer is fixedly connected with a heat conduction sheet.
[0008] Further, the heat conduction sheet is made of copper sheet and has a thickness of 0.10-0.20 mm.
[0009] Further, the intermediate layer subassembly includes a waterproof layer, the bottom of the waterproof layer is fixedly connected with a scratch-resistant layer, and the bottom of the scratch-resistant layer is fixedly connected with a second base layer paper.
[0010] Further, the inner layer subassembly includes a third base layer paper, the top of the third base layer paper is fixedly connected with a second adhesive layer, and the top of the second adhesive layer is fixedly connected to the bottom of the second base layer paper.
[0011] Further, the third base paper has a material of sulphate wood pulp.
[0012] The utility model discloses a technical effect and advantage:
[0013] 1. The utility model discloses a fire -retardant layer subassembly is equipped with, when the first base paper contacts the fire source, the graphite particle on the connecting layer will the temperature of first base paper even transmission gives the heat conduction piece, make the temperature of first base paper unable reach the ignition point, and then avoid the first base paper combustion, and the heat conduction piece will temperature conduction give the heat insulating layer, and the heat insulating layer will high temperature isolate the inside and outside, and then make the temperature of heat insulating layer inside enough reach the file paper ignition point, be favorable to reduce the file and cause the damage condition of the fire to take place, to avoid causing the major loss.
[0014] 2. The utility model discloses an intermediate layer subassembly is equipped with, sets up waterproof layer at the top of second base paper, sets up wear -resisting layer at the top of waterproof layer, be favorable to improve the waterproofness and wear resistance of kraft paper, alleviate the wear and tear of kraft paper in daily use. DRAWINGS
[0015] Figure 1 It is the whole structure schematic diagram of the utility model;
[0016] Figure 2 It is the fire -retardant layer subassembly structure schematic diagram of the utility model;
[0017] Figure 3 It is the graphite coating structure schematic diagram of the utility model;
[0018] Figure 4 It is the heat conduction layer structure schematic diagram of the utility model;
[0019] Figure 5 It is the intermediate layer subassembly structure schematic diagram of the utility model;
[0020] Figure 6 It is the inner layer subassembly structure schematic diagram of the utility model.
[0021] The drawing mark is: 1, fire -retardant layer subassembly;101, first base paper;102, graphite coating;1021, connecting layer;1022, graphite particle;103, heat conduction layer;1031, heat insulating layer;1032, heat conduction piece;104, first adhesive layer;2, intermediate layer subassembly;201, waterproof layer;202, wear -resisting layer;203, second base paper;3, inner layer subassembly;301, third base paper;302, second adhesive layer. DETAILED DESCRIPTION
[0022] The technical scheme in the utility model will be described clearly and completely in combination with the drawings in the utility model, and additionally, the forms of each structure recorded in the following embodiments are only examples, and the kraft paper with flame retardation involved in the utility model is not limited to each structure recorded in the following embodiments, and all other embodiments obtained by the ordinary skilled in the art without creative labor belong to the protection scope of the utility model.
[0023] Embodiment one
[0024] With reference to Figures 1 to 6 The utility model provides a kind of kraft paper with flame retardation, including fire -retardant layer subassembly 1, the bottom of fire -retardant layer subassembly 1 is fixedly connected with intermediate layer subassembly 2, the bottom of intermediate layer subassembly 2 is fixedly connected with inner layer subassembly 3.
[0025] In the embodiment, it needs to be specifically supplemented that when the first base layer paper of fire -retardant layer subassembly 1 contacts fire source, the graphite particles on connecting layer will the temperature of first base layer paper be evenly transferred to heat conduction piece, so that the temperature of first base layer paper cannot reach ignition point, to avoid first base layer paper burning, heat conduction piece conducts temperature to heat insulation layer, heat insulation layer isolates high temperature from outside, to make the temperature inside heat insulation layer insufficient to reach file paper ignition point, beneficial to reduce the damage of file due to fire, to avoid causing significant loss, intermediate layer subassembly 2 is provided with waterproof layer on the top of second base layer paper, and wear-resistant layer is provided on the top of waterproof layer, to improve the waterproofness and wear resistance of kraft paper, alleviate the wear of kraft paper in daily use, and the specific structure and working principle of the above each component will be described in detail subsequently.
[0026] In a preferred embodiment, fire -retardant layer subassembly 1 includes first base layer paper 101, the bottom of first base layer paper 101 is fixedly connected with graphite coating 102, the bottom of graphite coating 102 is fixedly connected with heat conduction layer 103, the bottom of heat conduction layer 103 is fixedly connected with first adhesive layer 104, and the material of first base layer paper 101 is sulphate wood pulp.
[0027] In a preferred embodiment, graphite coating 102 includes connecting layer 1021, and connecting layer 1021 is provided with graphite particles 1022 on the top.
[0028] In the embodiment, it needs to be specifically supplemented that graphite particles 1022 are evenly coated on the top of connecting layer 1021, and heat can be rapidly transferred.
[0029] In a preferred embodiment, heat conduction layer 103 includes heat insulation layer 1031, and heat insulation layer 1031 is fixedly connected with heat conduction piece 1032 on the top, and the material of heat conduction piece 1032 is copper sheet and the thickness is between 0.10 millimeter and 0.20 millimeter.
[0030] In the embodiment, it needs to be particularly pointed out that when the first base paper 101 contacts the fire source, the graphite particles 1022 on the connecting layer 1021 uniformly transmit the temperature of the first base paper to the heat conduction sheet 1032, so that the temperature of the first base paper 101 cannot reach the ignition point, thereby avoiding the burning of the first base paper 101, the heat conduction sheet 1032 conducts the temperature to the heat insulation layer 1031, the heat insulation layer 1031 isolates the high temperature from the outside, thereby the temperature inside the heat insulation layer is insufficient to reach the ignition point of the file paper, which is beneficial to reduce the damage of the file caused by the fire, thereby avoiding causing great loss, the overall thickness of the kraft paper is between 0.2 millimeters to 0.3 millimeters.
[0031] In a preferred embodiment, the intermediate layer assembly 2 comprises a waterproof layer 201, the bottom of the waterproof layer 201 is fixedly connected with a scratch-resistant layer 202, the bottom of the scratch-resistant layer 202 is fixedly connected with a second base paper 203, the material of the waterproof layer 201 is polyurethane, and the material of the scratch-resistant layer 202 is polyurethane.
[0032] In the embodiment, it needs to be particularly pointed out that the scratch-resistant layer 202 is arranged on the top of the second base paper 203, and the waterproof layer 201 is arranged on the top of the scratch-resistant layer 202, which is beneficial to improve the waterproofness and wear resistance of the kraft paper and alleviate the wear of the kraft paper in daily use.
[0033] In a preferred embodiment, the inner layer assembly 3 comprises a third base paper 301, the top of the third base paper 301 is fixedly connected with a second adhesive layer 302, the top of the second adhesive layer 302 is fixedly connected to the bottom of the second base paper 203, and the material of the third base paper 301 is sulfite wood pulp.
[0034] Embodiment two
[0035] With reference to Figures 1 to 6 The utility model provides a kraft paper with flame -retardant, including flame -retardant layer assembly 1, the bottom of flame -retardant layer assembly 1 is fixedly connected with intermediate layer assembly 2, and the bottom of intermediate layer assembly 2 is fixedly connected with inner layer assembly 3.
[0036] In a preferred embodiment, the flame -retardant layer assembly 1 comprises a first base paper 101, the bottom of the first base paper 101 is fixedly connected with a graphite coating 102, the bottom of the graphite coating 102 is fixedly connected with a heat conduction layer 103, the bottom of the heat conduction layer 103 is fixedly connected with a first adhesive layer 104, and the material of the first base paper 101 is sulfite wood pulp.
[0037] In a preferred embodiment, the graphite coating 102 comprises a connecting layer 1021, and the top of the connecting layer 1021 is provided with graphite particles 1022.
[0038] It needs to be particularly pointed out in the embodiment that the graphite particles 1022 are evenly coated on the top of the connecting layer 1021, and can rapidly transfer heat.
[0039] In a preferred embodiment, the heat-conducting layer 103 comprises a heat-insulating layer 1031, and the top of the heat-insulating layer 1031 is fixedly connected with a heat-conducting sheet 1032, the material of the heat-conducting sheet 1032 is copper sheet, and the thickness of the heat-conducting sheet 1032 is between 0.10 mm and 0.20 mm.
[0040] It needs to be particularly pointed out in the embodiment that when the first base layer paper 101 contacts the fire source, the graphite particles 1022 on the connecting layer 1021 uniformly transfer the temperature of the first base layer paper to the heat-conducting sheet 1032, so that the temperature of the first base layer paper 101 cannot reach the ignition point, thereby avoiding the burning of the first base layer paper 101, the heat-conducting sheet 1032 conducts the temperature to the heat-insulating layer 1031, the heat-insulating layer 1031 isolates the high temperature from the outside, thereby the temperature inside the heat-insulating layer is insufficient to reach the ignition point of the file paper, which is beneficial to reduce the damage of the file caused by the fire, thereby avoiding causing significant loss, and the overall thickness of the kraft paper is between 0.2 mm and 0.3 mm.
[0041] In a preferred embodiment, the intermediate layer assembly 2 comprises a waterproof layer 201, the bottom of the waterproof layer 201 is fixedly connected with a scratch-resistant layer 202, the bottom of the scratch-resistant layer 202 is fixedly connected with a second base layer paper 203, the material of the waterproof layer 201 is acrylic, and the material of the scratch-resistant layer 202 is polyurethane.
[0042] It needs to be particularly pointed out in the embodiment that the scratch-resistant layer 202 is arranged on the top of the second base layer paper 203, and the waterproof layer 201 is arranged on the top of the scratch-resistant layer 202, which is beneficial to improve the waterproofness and wear resistance of the kraft paper and relieve the wear of the kraft paper in daily use.
[0043] In a preferred embodiment, the inner layer assembly 3 comprises a third base layer paper 301, the top of the third base layer paper 301 is fixedly connected with a second adhesive layer 302, the top of the second adhesive layer 302 is fixedly connected to the bottom of the second base layer paper 203, and the material of the third base layer paper 301 is sulfate wood pulp.
[0044] The difference between the first embodiment and the second embodiment lies in that the material of the waterproof layer 201 in the first embodiment is polyurethane, the material of the waterproof layer 201 in the second embodiment is acrylic, polyurethane and acrylic both have excellent waterproof performance, but the waterproof layer of polyurethane is more compact and has stronger weather resistance, and is suitable for scenes with high long-term waterproof demand, and the first embodiment has longer-term waterproofness than the second embodiment.
[0045] The working principle of the utility model discloses: when the first base layer paper 101 contacts the fire source, the graphite particle 1022 on the connecting layer 1021 will evenly transmit the temperature of the first base layer paper to the heat conduction sheet 1032, so that the temperature of the first base layer paper 101 cannot reach the ignition point, thereby avoiding the first base layer paper 101 from burning, the heat conduction sheet 1032 will transmit the temperature to the heat insulation layer 1031, the heat insulation layer 1031 will isolate the high temperature from the outside, thereby making the temperature inside the heat insulation layer insufficient to reach the ignition point of the file paper, which is favorable for reducing the damage of the file caused by the fire, thereby avoiding causing the significant loss, in addition, the scrub-resistant layer 202 is arranged on the top of the second base layer paper 203, and the waterproof layer 201 is arranged on the top of the scrub-resistant layer 202, which is favorable for improving the waterproofness and wear resistance of the kraft paper and relieving the wear of the kraft paper in daily use.
[0046] Finally, the following points should be noted: first, in the description of the present application, it should be pointed out that, unless otherwise specified and limited, the terms "installation", "connection" and "connection" should be understood broadly, which can be mechanical connection or electrical connection, or the communication between two elements, or direct connection, "up", "down", "left", "right" and the like are only used to indicate the relative positional relationship, when the absolute position of the described object changes, the relative positional relationship may change;
[0047] Secondly: the utility model discloses the embodiment of the drawings, only relate to the structure involved in the embodiment of the present disclosure, other structures can refer to the usual design, under the condition of no conflict, the same embodiment and different embodiments of the utility model can be combined with each other;
[0048] Finally: the above only for the preferred embodiment of the utility model, and does not limit the utility model, any modification, equivalent replacement, improvement, etc. within the spirit and principle of the utility model, should be included in the protection scope of the utility model.
Claims
1. A flame-retardant kraft paper, comprising a flame-retardant layer assembly (1), characterized in that, The flame retardant layer assembly (1) is fixedly connected to the bottom of the intermediate layer assembly (2), and the intermediate layer assembly (2) is fixedly connected to the bottom of the inner layer assembly (3). The flame retardant layer assembly (1) includes a first base paper (101), a graphite coating (102) is fixedly connected to the bottom of the first base paper (101), a thermally conductive layer (103) is fixedly connected to the bottom of the graphite coating (102), and a first adhesive layer (104) is fixedly connected to the bottom of the thermally conductive layer (103). The material of the first base paper (101) is sulfate wood pulp.
2. The flame-retardant kraft paper according to claim 1, characterized in that: The graphite coating (102) includes a connecting layer (1021), and graphite particles (1022) are provided on the top of the connecting layer (1021).
3. The flame-retardant kraft paper according to claim 1, characterized in that: The heat-conducting layer (103) includes an insulation layer (1031), and a heat-conducting sheet (1032) is fixedly connected to the top of the insulation layer (1031).
4. The flame-retardant kraft paper according to claim 3, characterized in that: The heat-conducting sheet (1032) is made of copper and has a thickness between 0.10 mm and 0.20 mm.
5. The flame-retardant kraft paper according to claim 1, characterized in that: The intermediate layer assembly (2) includes a waterproof layer (201), a washable layer (202) is fixedly connected to the bottom of the waterproof layer (201), and a second base paper (203) is fixedly connected to the bottom of the washable layer (202).
6. The flame-retardant kraft paper according to claim 1, characterized in that: The inner layer component (3) includes a third base paper (301), the top of which is fixedly connected to a second adhesive layer (302), and the top of the second adhesive layer (302) is fixedly connected to the bottom of the second base paper (203).
7. The flame-retardant kraft paper according to claim 6, characterized in that: The material of the third base layer paper (301) is sulfate wood pulp.