A method of making an outdoor blanket

Abstract

The present application relates to the field of blanket preparation, and aims to solve the problem of high requirement for antibacterial and mildew-proof performance of outdoor blankets, and provides a preparation method of an outdoor blanket, which comprises three layers of upper, middle and lower layers, the upper layer is a semi-light middle-hole fiber woven gray cloth, the middle layer is a low-density polyethylene film, and the lower layer is a shake pile fabric, polyurethane resin and bridging agent resin are stirred uniformly and then coated on a roller, and the three layers are bonded together by a heating roller to obtain the outdoor blanket. The three layers are made of suitable materials, and the outdoor blanket has the properties of warmth, moisture resistance, softness, skin-friendliness, antibacterial and mildew-proof performance.

Description

Technical Field

[0001] This invention relates to the field of blanket manufacturing, and in particular to a method for manufacturing an outdoor blanket. Background Technology

[0002] As outdoor sports become increasingly popular in China, people's demand for professional outdoor products is rising. Outdoor blankets can be easily spread out outdoors, providing a clean space for picnics or leisure activities. Because they are foldable and easy to store, they are very convenient to use. They can be used with picnic bags or as standalone products, for example, for outdoor picnics, fitness, moisture protection, and other matting needs. For instance, patent CN205107105U discloses an outdoor Raschel blanket, which consists of a blanket body, a waterproof layer, an air cushion layer, and a PE bottom layer from top to bottom. The blanket body includes a base fabric and pile yarn woven into the base fabric, with one end of the pile yarn protruding outside the base fabric to form fluff. The base fabric and the waterproof layer are detachably connected. The waterproof layer, air cushion layer, and PE layer are fixed together by binding and sewing. This utility model has a simple structure, is easy to carry and use, and can be used as a cover or a mat, providing warmth, insulation, and moisture protection, making it very suitable for outdoor use. However, it does not consider the need for antibacterial and anti-mildew properties for outdoor blankets due to their frequent contact with the external environment. Therefore, an ideal solution is needed. Summary of the Invention

[0003] In order to overcome the problem of high requirements for antibacterial and anti-mildew properties in outdoor blankets, this invention provides a method for preparing an outdoor blanket, comprising three layers: upper, middle and lower, each made of a suitable material, to obtain an outdoor blanket that combines warmth and moisture-proof, softness and skin-friendliness, and antibacterial and anti-mildew properties.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A method for preparing an outdoor blanket, comprising three layers: an upper layer of semi-gloss mesoporous fiber woven fabric, a middle layer of low-density polyethylene film, and a lower layer of fleece fabric. Polyurethane resin and crosslinking agent resin are stirred evenly and then applied to a gluing roller. The three layers are then bonded together using a heated roller to obtain the outdoor blanket. Each of the three layers is made of suitable materials: the lower layer is waterproof and moisture-proof, the middle layer is warm, and the upper layer is soft and skin-friendly. The fleece used in the lower layer is soft to the touch and has full tufts, providing direct contact with the body for comfort and softness. The semi-gloss mesoporous fiber woven fabric used in the upper layer is waterproof, moisture-proof, antibacterial, and mildew-proof, and is in direct contact with the ground. The low-density polyethylene film used in the middle layer is lightweight and thin, possessing excellent chemical stability, heat-sealing properties, water resistance, and moisture resistance. It further isolates moisture and cold air, greatly enhancing moisture-proof and warmth-retaining effects, and also preventing outdoor fungi and molds from penetrating the fleece in the lower layer.

[0006] Preferably, the semi-gloss mesoporous fiber woven fabric is 167 dtex / 228f, with a pile height of 8-12 mm and a weight of 250-280 g / m². 2 The travel blanket fabric is used; the low-density polyethylene film has a density of 0.9-0.95 g / m³. 3 The thickness is less than 0.03mm; the fleece has a pile height of 8-12mm and a weight of 280-300g / m². 2 Travel blankets are typically made of polyester or acrylic. Within the preferred range mentioned above, outdoor blankets offer superior warmth, moisture resistance, softness against the skin, and antibacterial and anti-mildew properties.

[0007] Preferably, the temperature of the heating roller is 125-130°C.

[0008] Preferably, the preparation of the upper and lower layers of the outdoor blanket includes weaving, shaping, pretreatment, dyeing, steaming, washing, softening, and posttreatment.

[0009] Preferably, diamine hydrogen phosphate, an antibacterial agent, and a textile antifungal agent are added during the washing process. Due to the special characteristics of outdoor products, it is necessary to further improve their antibacterial and antifungal properties.

[0010] Preferably, the amount of diammonium hydrogen phosphate used is 1-1.5% of the mass of the fabric, and the pH value of the fabric is adjusted to be between 4.5 and 7.5.

[0011] Preferably, the antibacterial agent is ADM-333 antibacterial agent, and the textile antifungal agent is ADM-BJ01 textile antifungal agent; both are used at 3-5% of the weight of the greige fabric, with a liquor ratio of 1:(14-16) and a solution pH of 5-7.

[0012] Preferably, the preparation method of the textile antifungal agent of the present invention is as follows:

[0013] (1) Castor oil, chloropentane, and catalysts copper(II) acetylacetonate and tert-butylamine were added to a high-pressure reactor, heated to 80-100℃ and stirred for 1-2 hours, and then distilled under reduced pressure to obtain chlorinated grafted castor oil.

[0014] (2) Chlorinated castor oil and citric acid are added to ethanol and reacted at 50-70℃ for 6-10 hours under acid catalysis. The resulting product is a textile antifungal agent.

[0015] Preferably, the mass ratio of castor oil, chloropentane and citric acid is 10:(1-1.5):(2-4).

[0016] Castor oil is used as the main component of the antifungal agent. Castor oil contains active groups such as hydroxyl, carbonyl, and carbon-carbon double bonds. Hydroxyl and carbonyl groups have antibacterial and antiseptic effects. This invention first utilizes the carbon-carbon double bond to undergo an addition reaction with chloropentane, causing the castor oil molecule to attach a chlorine group, significantly improving its bactericidal and antifungal properties (the number of chlorine grafts must be strictly controlled to avoid adverse safety effects). Then, the hydroxyl groups on the castor oil undergo an esterification reaction with the carboxyl groups of citric acid, further grafting citric acid onto the castor oil. Citric acid has three carboxyl groups and one hydroxyl group. After one carboxyl group participates in the reaction, the remaining carboxyl and hydroxyl groups can further contribute to the antifungal effect. The molecular structure of castor oil is a long, branched chain, which easily inserts into the fiber pores, shuttles and wraps between the fibers, increases the binding strength between the antifungal agent and the blanket fibers, and can penetrate deep into the blanket fibers for sterilization. Citric acid has three carboxyl groups and one hydroxyl group located on four branches of the same carbon atom, forming a claw shape. Therefore, grafting citric acid is equivalent to adding fixing claws to the long side chains of castor oil, further increasing the bonding strength between the antifungal agent and the blanket fibers. Castor oil itself has slight volatility; after a series of grafting processes, its volatility decreases, and its antibacterial durability is improved.

[0017] Therefore, the beneficial effects of the present invention are: (1) the three layers are made of suitable materials to obtain an outdoor blanket that has the properties of warmth and moisture protection, softness and skin-friendliness, antibacterial and mildew prevention; (2) the outdoor blanket treated with modified castor oil as a textile mildew inhibitor has a good and long-lasting mildew prevention effect. Detailed Implementation

[0018] The technical solution of the present invention will be further described below through specific embodiments.

[0019] In this invention, unless otherwise specified, the raw materials and equipment used can be purchased from the market or are commonly used in the field. The methods in the embodiments, unless otherwise specified, are conventional methods in the field.

[0020] Example 1

[0021] A method for preparing an outdoor blanket includes three layers: upper, middle, and lower. The upper layer is a woven fabric made of 167dtex / 228f semi-glossy mesoporous fiber, with a pile height of 10mm and a weight of 260g / m². 2 It is made of acrylic travel blanket fabric; the middle layer is 0.02mm thick and has a density of 0.92g / cm. 3 Low-density polyethylene film; the lower layer is 10mm high and 290g / m². 2 Fleece fabric: After the polyurethane resin and crosslinking agent resin are mixed evenly, they are bonded together by passing through an 80-mesh gluing roller and a heated roller at 128°C to obtain an outdoor blanket.

[0022] The upper, middle, and lower layers are all produced through weaving, setting, pretreatment, dyeing, steaming, washing, softening, posttreatment, and pelletizing. During the washing process, 1.2% of diammonium hydrogen phosphate by weight of the greige fabric is added; and 4% of ADM-333 antibacterial agent and 4% of ADM-BJ01 textile antifungal agent by weight of the greige fabric are added, with a liquor ratio of 1:15 and a solution pH of 6.

[0023] Example 2

[0024] A method for preparing an outdoor blanket includes three layers: upper, middle, and lower. The upper layer is a woven fabric made of 167dtex / 228f semi-glossy mesoporous fiber, with a pile height of 12mm and a weight of 280g / m². 2 It is made of travel blanket fabric; the middle layer is 0.03mm thick and has a density of 0.9g / cm. 3 Low-density polyethylene film; the lower layer is 8mm high and 280g / m². 2 Fleece fabric: After the polyurethane resin and crosslinking agent resin are mixed evenly, they are bonded together by passing through an 80-mesh gluing roller and a heated roller at 130°C to obtain an outdoor blanket.

[0025] The upper, middle, and lower layers are all produced through weaving, setting, pretreatment, dyeing, steaming, washing, softening, posttreatment, and pelletizing. During the washing process, 1% of diammonium hydrogen phosphate by weight of the greige fabric is added; and 3% of ADM-333 antibacterial agent and 3% of ADM-BJ01 textile antifungal agent by weight of the greige fabric are added, with a liquor ratio of 1:16 and a pH value of 7.

[0026] Example 3

[0027] A method for preparing an outdoor blanket includes three layers: upper, middle, and lower. The upper layer is a woven fabric made of 167dtex / 228f semi-glossy mesoporous fiber, with a pile height of 8mm and a weight of 250g / m². 2 It is made of travel blanket fabric; the middle layer is 0.02mm thick and has a density of 0.95g / cm. 3 Low-density polyethylene film; the lower layer is 12mm high and 300g / m². 2 Fleece fabric: After the polyurethane resin and crosslinking agent resin are mixed evenly, they are bonded together by passing through an 80-mesh gluing roller and a heated roller at 125°C to obtain an outdoor blanket.

[0028] The upper, middle, and lower layers are all produced through weaving, setting, pretreatment, dyeing, steaming, washing, softening, posttreatment, and pelletizing. During the washing process, 1.5% of diammonium hydrogen phosphate by weight of the greige fabric is added; and 5% of ADM-333 antibacterial agent and 5% of ADM-BJ01 textile antifungal agent by weight of the greige fabric are added, with a liquor ratio of 1:14 and a solution pH of 5.

[0029] Example 4

[0030] The difference from Example 1 is that the textile antifungal agent added during the washing process is prepared in-house, and the preparation method is as follows:

[0031] (1) Castor oil, chloropentane, copper(II) acetylacetonate, and tert-butylamine were added to a high-pressure reactor in a mass ratio of 933:128:5:7. The mixture was heated to 90°C and stirred for 2 hours. Chlorinated grafted castor oil was obtained by vacuum distillation.

[0032] (2) Chlorinated castor oil and citric acid were added to ethanol, with a mass ratio of citric acid to castor oil of 933:384. The mixture was reacted at 60°C for 8 hours under sulfuric acid catalysis. The resulting product was a textile antifungal agent.

[0033] The textile antifungal agent needs to be used in conjunction with an emulsifier, such as Tween 80.

[0034] Comparative Example 1

[0035] The difference from Example 4 is that the preparation method of the textile antifungal agent is as follows: castor oil, chloropentane, copper(II) acetylacetonate, and tert-butylamine are added to a high-pressure reactor in a mass ratio of 933:128:5:7, heated to 90°C and stirred for 2 hours, and then distilled under reduced pressure to obtain chlorinated grafted castor oil, which is the textile antifungal agent.

[0036] Comparative Example 2

[0037] The difference from Example 4 is that the preparation method of the textile antifungal agent is as follows: castor oil and citric acid are added to ethanol at a mass ratio of 933:384, and reacted at 60°C for 8 hours under sulfuric acid catalysis. The product obtained is the textile antifungal agent.

[0038] Comparative Example 3

[0039] The difference from Example 4 is that the textile antifungal agent is a mixture of castor oil, chloropentane and citric acid in a mass ratio of 933:128:384.

[0040] Performance Characterization

[0041] The outdoor blankets prepared in the above embodiments were subjected to performance tests, and all met the usage requirements. The results of Example 1 are shown in Table 1:

[0042] Table 1. Performance data of outdoor blankets in Example 1

[0043] performance performance Length deviation rate / % ±2.0 Abrasion resistance / grade 4 Width deviation rate / % ±2.0 Perspiration resistance (acid, alkali) grade 4 Weight deviation rate / % ±2.0 Formaldehyde content / mg / kg ≤75 Shrinkage rate / % Longitude and latitude ±2.0 Decomposable aromatic dyes Disable Sun-resistant / Grade 4 Odor none Wash fastness / grade 4

[0044] The antibacterial properties of outdoor blankets were tested. The test method was GB / T20944.3-2008, and the results are shown in Table 2.

[0045] Table 2. Antibacterial Performance Data of Outdoor Blankets

[0046]

[0047] The mildew resistance of outdoor blankets was tested according to GB / T24346-2009. For mildew resistance and washability, the samples were washed under test condition A1M in GB / T12490-2007. The results are shown in Table 3.

[0048] Table 3. Mildew Resistance Rating of Outdoor Blankets

[0049]

[0050] As shown in Table 3, Example 4, using a self-made textile antifungal agent, exhibits superior antifungal and wash-resistant properties compared to the commercially available textile antifungal agent in Example 1, at the same dosage. Compared to Example 4, which simultaneously modifies castor oil with chlorine and citric acid, Comparative Example 1, which only modifies castor oil with chlorine, shows a decrease in antifungal and wash-resistant properties because citric acid grafting acts as an anchor point, strengthening the bond. Comparative Example 2, which only grafts castor oil with citric acid, shows a decrease in antifungal properties due to the lack of chlorine. Comparative Example 3, which directly mixes castor oil, chlorinated compounds, and citric acid, is far less effective than Example 4, indicating that the three components only achieve optimal effects after grafting.

[0051] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A method for preparing an outdoor blanket, characterized in that, Outdoor blankets consist of three layers: upper, middle, and lower. The upper layer is a semi-glossy mesoporous fiber woven fabric, the middle layer is a low-density polyethylene film, and the lower layer is a fleece fabric. The preparation of the upper and lower layers of the outdoor blankets includes weaving, shaping, pretreatment, dyeing, steaming, washing, softening, and posttreatment. Textile antifungal agent is added during the washing process. The preparation method of the textile antifungal agent is as follows: (1) Castor oil, chloropentane, and catalysts copper acetylacetonate (II) and tert-butylamine are added to a high-pressure reactor and heated to 80-100℃ and stirred for 1-2 hours. The chlorinated castor oil is obtained by vacuum distillation. (2) Chlorinated castor oil and citric acid are added to ethanol and reacted at 50-70℃ for 6-10 hours under acid catalysis. After the polyurethane resin and crosslinking agent resin are mixed evenly, they are applied to the glue roller, and the three layers are bonded together by the heated roller to obtain an outdoor blanket.

2. The method for preparing an outdoor blanket according to claim 1, characterized in that, The semi-gloss mesoporous fiber woven fabric, 167 dtex / 228f, is made from travel blanket fabric with a pile height of 8-12 mm and a weight of 250-280 g / m²; the low-density polyethylene film has a density of 0.9-0.95 g / cm³. 3 The thickness is less than 0.03 mm; the fleece has a pile height of 8-12 mm and a weight of 280-300 g / m².

3. A method for preparing an outdoor blanket according to claim 1 or 2, characterized in that, The temperature of the heating roller is 125-130 ℃.

4. The method for preparing an outdoor blanket according to claim 1, characterized in that, The washing process also includes the addition of diamine hydrogen phosphate and antibacterial agents.

5. The method for preparing an outdoor blanket according to claim 4, characterized in that, The amount of diammonium hydrogen phosphate used is 1-1.5% of the weight of the fabric.

6. A method for preparing an outdoor blanket according to claim 4 or 5, characterized in that, The antibacterial agent is ADM-333 antibacterial agent. The amount of both the antibacterial agent and the textile antifungal agent is 3-5% of the weight of the greige fabric. The liquor ratio is 1:(14-16), and the pH value of the solution is 5-7.

7. The method for preparing an outdoor blanket according to claim 1, characterized in that, The mass ratio of castor oil, chloropentane, and citric acid is 10:(1-1.5):(2-4).

8. The method for preparing an outdoor blanket according to claim 1, characterized in that, Heat to 90℃ and stir for 2 hours.

9. A method for preparing an outdoor blanket according to claim 1, characterized in that, The reaction was carried out at 60 °C for 8 h under acid catalysis.

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