Multilayer composite paper

Abstract

The utility model relates to the technical field of multi-layer composite paper, in particular to multi-layer composite paper which comprises a first paper layer, a non-woven fabric is attached to the first paper layer, a second paper layer is attached to the non-woven fabric, a hydrophilic layer is arranged in the non-woven fabric, a reinforcing layer is attached to the hydrophilic layer, and an antibacterial layer is attached to the reinforcing layer. The composite material has the skin-friendly feeling of paper and the wet strength of non-woven fabric, and is low in manufacturing cost and suitable for high-quality paper for daily use.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of multilayer composite paper, especially to a multilayer composite paper. BACKGROUND

[0002] ‌Multilayer composite paper is a kind of paper product which is laminated by paper, paperboard and other materials (such as plastic, aluminum foil, cloth, etc.) through composite processing technology. This material not only improves the appearance performance and strength of paper and paperboard, but also improves its waterproof, moisture-proof, oil-resistant, airtight aroma-proof and other characteristics, and has heat sealing property, light resistance and heat resistance‌.

[0003] With the increasing demand for high quality of life, the demand for paper is also increasing. After the development of single-layer paper to double-layer paper, the market has successively launched three-layer paper, four-layer paper, five-layer paper, six-layer paper and other multi-layer paper to improve the quality and applicability. Paper pulp has strong wiping power, good skin feeling and low cost, and is always the first choice of raw materials in the industry. The current multi-layer paper on the market is made of 100% paper pulp, which can improve the thickness and quality, but the strength is low in wet state, and it is not suitable for making wet wipes or wiping with a large amount of water stains. In addition, as another submarket of wiping materials, composite non-woven wiping towels are also popular in the market. The raw material of spunlace non-woven fabric is viscose fiber or polyester fiber, which can greatly improve the strength, but these two types of fibers do not have the fibrillation characteristics of paper pulp fibers, and the skin feeling during wiping is not as good as paper products, and the cost is more than twice that of paper products‌.

[0004] The patent with the patent number ZL200720138039.5 discloses a multi-layer composite wiping cloth, and the overall technical solution of the patent is that the material is composed of three layers, including a first wiping layer, which is made of one of water-jet non-woven fabric or dust-free paper, including but not limited to plain or mesh non-woven fabric made of viscose fiber, polypropylene fiber or polyester interwoven, so that the wiping layer 1 has good water absorption and permeability; a second water-retaining layer made of one of non-woven fabric or fiber with high quality and bulkiness, including but not limited to polypropylene fiber fabric with strong water-retaining performance; the first layer and the second layer are connected by one or more of glue, mechanical connection, thermal compounding or ultrasonic compounding; the third layer is compounded by PE film to meet the strength and softness requirements. The existing technology has the following problems in use: the first layer uses non-woven fabric, which has a minimum technical limit of gram weight, if it is water-jet non-woven fabric, the minimum gram weight is 30gsm, and if it is dust-free paper, the minimum gram weight is 45gsm, high gram weight not only leads to high cost, but also makes the composite feel hard and the fiber does not have fibrillation characteristics, reducing the comfort during wiping; the third layer uses flow casting compounding, which reduces the water absorption of the fabric and damages the thickness of the fabric, reducing the use experience; the utility model patent aims to develop a paper-cloth composite wiping material which has the skin-friendly feeling of paper, the wet strength of non-woven fabric and the cost between paper and non-woven fabric;

[0005] By embedding a layer of non-woven fabric with excellent bulkiness between two layers of paper, the wet strength and bulkiness are increased, the layers are firmly combined, the skin-friendly feeling, high wet strength and cost performance are achieved, and the existing composite wiping cloth is composed of cloth-cloth or paper-paper. The technical difficulty of cloth-paper compounding lies in the matching of the performance of the two materials, i.e. paper and non-woven fabric, which is suitable for smooth processing in the compounding process.

[0006] Therefore, in view of the problems of the existing composite paper, i.e. not having skin-friendly feeling after production, low humidity and high cost, a multi-layer composite paper is designed, which has the skin-friendly feeling of paper, the wet strength of non-woven fabric and low manufacturing cost, and is suitable for high-quality living paper. Utility model content

[0007] In order to overcome the problems of the existing composite paper, i.e. not having skin-friendly feeling after production, low humidity and high cost.

[0008] The technical scheme of the utility model is as follows: a multi-layer composite paper, which comprises a first paper layer, the first paper layer is attached with non-woven fabric, the non-woven fabric is attached with a second paper layer, the inside of the non-woven fabric is provided with a hydrophilic layer, the hydrophilic layer is attached with a reinforcing layer, and the reinforcing layer is attached with an antibacterial layer.

[0009] Preferably, the multi-layer composite paper body is made of high-density material by compounding the first paper layer, the second paper layer and the non-woven fabric inside the multi-layer composite paper body as the main material, the composite material has the skin-friendly feeling of paper, the wet strength of non-woven fabric, and the cost is lower than that of non-woven fabric wiping cloth, the practicability of the multi-layer composite paper body is greatly improved, the hydrophilic layer inside the non-woven fabric improves the hydrophilic and skin-friendly feeling of the multi-layer composite paper body, the reinforcing layer inside the non-woven fabric improves the toughness and practical effect of the multi-layer composite paper body as a whole, and the antibacterial layer improves the bacteriostatic effect of the multi-layer composite paper body.

[0010] Preferably, the end of the hydrophilic layer and away from the reinforcing layer is attached with the non-woven fabric, and the surface of the non-woven fabric is attached with the first cloth surface.

[0011] Preferably, the other end of the antibacterial layer and away from the reinforcing layer is attached with the high-density surface layer, and the surface of the high-density surface layer is attached with the second cloth surface.

[0012] Preferably, the first paper layer, the non-woven fabric and the second paper layer are all attached with the adhesive layer, and the first paper layer, the non-woven fabric and the second paper layer are all attached through the adhesive layer.

[0013] Preferably, the surface of the first paper layer and the second paper layer is provided with the wiping layer, and the reinforcing layer is made of PBO fiber material.

[0014] Preferably, the non-woven fabric is provided with the water-retaining layer between the non-woven fabric and the hydrophilic layer.

[0015] Preferably, the first paper layer, the paper core and the second paper layer are attached to form the multi-layer composite paper body, the thickness of the multi-layer composite paper body is 0.28-0.80mm, and the gram weight range is 45gsm-95gsm.

[0016] The utility model discloses the beneficial effects of:

[0017] This multi-layer composite paper is made by high-density bonding of a first paper layer, a second paper layer, and a paper core as the main materials. The composite material combines the skin-friendly feel of paper with the wet strength of non-woven fabric, and is less expensive than non-woven wiping cloths, greatly improving the practicality of the multi-layer composite paper. A hydrophilic layer enhances its skin-friendly and hydrophilic properties, while an internal reinforcing layer improves its overall toughness and usability. An antibacterial layer enhances its antibacterial effect. The paper used in the multi-layer composite paper body is 13-25gsm wiping paper, 0.10-0.15mm thick, 100% pulp, with an air permeability of 200-400L / m² / s. The non-woven fabric is either hot-air non-woven fabric or bicomponent polypropylene spunbond non-woven fabric, with a basis weight range of 15-25gsm and a thickness of 0.15-0.45mm. The non-woven fabric fiber material is 100%. PE / PET or 100% PP, air permeability 2500~3500L / M2 / S, elongation at break 60%~300%, non-woven fabric has a certain degree of elastic shrinkage, and the composite can help the product to be fluffy and soft. Attached Figure Description

[0018] Figure 1 The diagram shown is a three-dimensional structural illustration of the multilayer composite paper of this utility model.

[0019] Figure 2 The diagram shown is a three-dimensional structural diagram of the internal material of the multilayer composite paper of this utility model.

[0020] Figure 3 The diagram shown is a planar structural diagram of the internal material of the multilayer composite paper of this utility model.

[0021] Figure 4 The diagram shown is a partial cross-sectional view of the internal material of the nonwoven fabric of this utility model.

[0022] Explanation of reference numerals in the attached drawings: 1. Multi-layer composite paper body; 2. First paper layer; 3. Paper core; 4. Second paper layer; 5. Non-woven fabric; 6. Hydrophilic layer; 7. Reinforcing layer; 8. Antibacterial layer; 9. High-density surface layer. Detailed Implementation

[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0024] Please see Figures 1-4The utility model provides a kind of embodiment: a multilayer composite paper, including first paper layer 2, first paper layer 2 is attached with paper inner core 3, paper inner core 3 is attached with second paper layer 4, the inside of paper inner core 3 is provided with hydrophilic layer 6, hydrophilic layer 6 is attached with reinforcing layer 7, reinforcing layer 7 is attached with antibacterial layer 8, by the first paper layer 2, second paper layer 4 and paper inner core 3 inside the multilayer composite paper body 1 are mainly material and are made of the composite of high-density material, by composite material has the skin feeling of paper, the wet strength of paper inner core 3, and the cost of wiping cloth is lower than paper inner core 3, greatly improve the practicality of multilayer composite paper body 1.

[0025] Please refer to Figures 2-4 In the embodiment, one end of the hydrophilic layer 6 away from the reinforcing layer 7 is attached with non-woven fabric 5, the surface of the non-woven fabric 5 is attached with first cloth surface, the other end of the antibacterial layer 8 away from the reinforcing layer 7 is attached with high-density surface layer 9, the surface of the high-density surface layer 9 is attached with second cloth surface, the first paper layer 2, the paper inner core 3 and the second paper layer 4 are all provided with adhesive layer between layers, the first paper layer 2, the paper inner core 3 and the second paper layer 4 are all adhered by the adhesive layer, by the first paper layer 2, the second paper layer 4 and the paper inner core 3 inside the multilayer composite paper body 1 are mainly material and are made of the composite of high-density material, by composite material has the skin feeling of paper, the wet strength of non-woven fabric 5, and the cost of wiping cloth is lower than non-woven fabric 5, greatly improve the practicality of multilayer composite paper body 1.

[0026] Please refer to Figures 2-4 In the embodiment, the surface of the first paper layer 2 and the second paper layer 4 is provided with wiping layer, the reinforcing layer 7 is PBO fiber material, the non-woven fabric 5 is provided with water-retaining layer between the hydrophilic layer 6, the thickness of the multilayer composite paper body 1 material is 0.28~0.80mm, the grammage range is 45gsm~95gsm, by the hydrophilic layer 6, the hydrophilic and skin feeling of the multilayer composite paper body 1 is improved, and the reinforcing layer 7 inside it improves the toughness and practical effect of the multilayer composite paper body 1 as a whole, and the antibacterial layer 8 improves the bacteriostatic effect of the multilayer composite paper body 1.

[0027] In the working, by the first paper layer 2, the second paper layer 4 and the paper inner core 3 inside the multilayer composite paper body 1 are mainly material and are made of the composite of high-density material, by composite material has the skin feeling of paper, the wet strength of non-woven fabric 5, and the cost of wiping cloth is lower than non-woven fabric 5, greatly improve the practicality of multilayer composite paper body 1, by the hydrophilic layer 6, the hydrophilic and skin feeling of the multilayer composite paper body 1 is improved, and the reinforcing layer 7 inside it improves the toughness and practical effect of the multilayer composite paper body 1 as a whole, and the antibacterial layer 8 improves the bacteriostatic effect of the multilayer composite paper body 1.

[0028] Through the above steps, the first paper layer 2, the second paper layer 4 and the paper inner core 3 inside the multi-layer composite paper body 1 are mainly made of high-density composite materials, and the composite material has the skin-friendly feeling of paper and the wet strength of non-woven fabric 5, so as to solve the problems that the existing composite paper does not have skin-friendly feeling after production, the humidity is low, and a large amount of cost is needed.

Claims

1. A multi-ply composite paper comprising a first paper ply (2), characterised in that: The first paper layer (2) is attached to a paper inner core (3), the paper inner core (3) is attached to a second paper layer (4), the inside of the paper inner core (3) is provided with a hydrophilic layer (6), the hydrophilic layer (6) is attached to a reinforcing layer (7), and the reinforcing layer (7) is attached to an antibacterial layer (8).

2. A multi-ply composite paper according to claim 1, characterized in that: One end of the hydrophilic layer (6) away from the reinforcing layer (7) is attached to a non-woven fabric (5), and the surface of the non-woven fabric (5) is attached to a first cloth surface.

3. The multi-ply composite paper of claim 1, wherein: The other end of the antibacterial layer (8) away from the reinforcing layer (7) is attached to a high-density surface layer (9), and the surface of the high-density surface layer (9) is attached to a second cloth surface.

4. The multi-ply composite paper of claim 1, wherein: The first paper layer (2), the paper inner core (3) and the second paper layer (4) are all provided with an adhesive layer between each layer, and the first paper layer (2), the paper inner core (3) and the second paper layer (4) are all adhered by the adhesive layer.

5. The multi-ply composite paper of claim 1, wherein: The surface of the first paper layer (2) and the second paper layer (4) is provided with a wiping layer.

6. The multi-ply composite paper of claim 1, wherein: A water-retaining layer is provided between the non-woven fabric (5) and the hydrophilic layer (6).

7. The multi-ply composite paper of claim 1, wherein: The first paper layer (2), the paper inner core (3) and the second paper layer (4) are adhered to form a multi-layer composite paper body (1), the thickness of the material of the multi-layer composite paper body (1) is 0.28-0.80mm, and the gram weight range is 45gsm-95gsm.

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