A skin-friendly tablecloth and a preparation method thereof

Abstract

The application provides a skin-friendly tablecloth, which comprises a PVC layer, an ink printing layer and a skin-friendly layer which are sequentially compounded, the skin-friendly layer is prepared from a skin-friendly agent, and the skin-friendly agent comprises the following raw materials in parts by mass: 33-43% of an aqueous polyurethane resin; 25-35% of a siloxane polymer; 3-13% of ethylene glycol butyl ether; 1-7% of a stabilizer; 12-18% of alcohol; 1.5-2.5% of a catalyst; and 2.5-3.5% of a flame retardant. The skin-friendly tablecloth provided by the application is coated with a skin-friendly layer on the PVC surface, and the hard PVC film is healthy and comfortable to the skin, is green and environment-friendly, has the properties of compression resistance, acid and alkali resistance, temperature insulation, oil stain resistance, easy cleaning and the like, is necessary for modern home and catering places (especially western food), and has stable product quality.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of household products, and particularly relates to a skin-friendly tablecloth and a preparation method thereof. BACKGROUND

[0002] There are various tablecloth products, and large and medium-sized tablemats add infinite warmth to modern homes; practical tablecloths are mainly made of PVC, and the PVC tablecloth has the characteristics of wear resistance, slip resistance, high temperature resistance, heavy pressure resistance, easy cleaning and the like, but the shortcoming is that the hand feeling is hard and not soft. SUMMARY

[0003] Therefore, the application aims to provide a skin-friendly tablecloth and a preparation method thereof, and the skin-friendly tablecloth provided by the application is healthy, comfortable, green and environmentally friendly, and has stable product quality.

[0004] The application provides a skin-friendly tablecloth, which comprises a PVC layer, an ink printing layer and a skin-friendly layer which are sequentially compounded, the skin-friendly layer is prepared from a skin-friendly agent, and the skin-friendly agent comprises the following raw materials in mass percentage:

[0005] 33-43% of water-based polyurethane resin;

[0006] 25-35% of siloxane polymer;

[0007] 3-13% of ethylene glycol butyl ether;

[0008] 1-7% of stabilizer;

[0009] 12-18% of alcohol;

[0010] 1.5-2.5% of catalyst;

[0011] 2.5-3.5% of flame retardant.

[0012] Preferably, the siloxane polymer is selected from acrylic resin modified siloxane polymer;

[0013] The stabilizer is selected from thermal stabilizer: calcium-zinc stabilizer;

[0014] The alcohol is selected from edible alcohol with a volume percentage of 38-52%;

[0015] The catalyst is selected from T-12 catalyst;

[0016] The flame retardant is selected from water-based polyurethane flame retardant.

[0017] Preferably, the ink printing layer is prepared from raw materials comprising the following mass percentage:

[0018] Water 7%; alcohol 20%; modified water-soluble polyurethane 40%; pigment 30%; neutralizing agent 0.5%; auxiliary agent 1.2%; ether organic solvent 1.3%.

[0019] Preferably, the modified water-soluble polyurethane is selected from solvent-based polyurethane coatings;

[0020] The volume percentage of the alcohol is 38% to 52%;

[0021] The neutralizing agent is selected from potassium hydroxide;

[0022] The auxiliary agent is selected from heat stabilizers: calcium-zinc stabilizers;

[0023] The ether organic solvent is selected from ethyl acetate.

[0024] Preferably, the thickness of the PVC layer of the skin-friendly tablecloth is 0.08 to 0.2 mm.

[0025] The application also provides a preparation method of the above-mentioned skin-friendly tablecloth, comprising the following steps:

[0026] A) applying a PET water-based release agent to the surface of the PET film and drying, then printing water-based ink to obtain an ink printing layer;

[0027] B) transferring the ink printing layer to the surface of the PVC film, applying a skin-friendly agent to the surface of the ink printing layer, drying, and then winding to obtain a skin-friendly tablecloth.

[0028] Preferably, the raw materials for preparing the PET water-based release agent include:

[0029] Water 10-30%, edible alcohol 15-35%, water-soluble polyurethane 35-45%, titanium dioxide 5%, PVC powder 15-20%, and DOA oil 10%.

[0030] Preferably, in step A), the coating speed is 130-180 m / s, and the drying temperature is 150-200°C.

[0031] The printing speed of the water-based ink printing machine reaches 110-180 m / s, the printing air force reaches 60±10 m / s, and the oven temperature is 60±5°C.

[0032] Preferably, in step B), the transferring, coating, and drying steps are carried out in a transfer-coating-baking integrated device, the machine speed is controlled between 20 and 30 m / s during production, the temperature is set between 130 and 160°C, and the air box air force is controlled at 60 m / s.

[0033] Preferably, the ratio of pure water to the 120-mesh screen printing roller for applying the skin-friendly agent is controlled at 1 kg:50 kg, and the skin-friendly layer is formed on the surface after high-temperature baking at 130-160°C.

[0034] Compared with the prior art, the skin-friendly tablecloth provided by the application comprises a PVC layer, an ink printing layer and a skin-friendly layer which are sequentially compounded, the skin-friendly layer is prepared from a skin-friendly agent, and the skin-friendly agent comprises the following raw materials in parts by mass: 33-43% of water-based polyurethane resin; 25-35% of siloxane polymer; 3-13% of ethylene glycol butyl ether; 1-7% of stabilizer; 12-18% of alcohol; 1.5-2.5% of catalyst; and 2.5-3.5% of flame retardant. The skin-friendly tablecloth provided by the application is coated with the skin-friendly layer on the PVC surface, so that the hard PVC film is healthy and comfortable to the skin, is green and environmentally friendly, has the properties of compression resistance, acid and alkali resistance, temperature insulation, oil stain resistance, easy cleaning and the like, is necessary for modern home and catering places (especially western food), and has stable product quality. DETAILED DESCRIPTION

[0035] The skin-friendly tablecloth provided by the application comprises a PVC layer, an ink printing layer and a skin-friendly layer which are sequentially compounded, the skin-friendly layer is prepared from a skin-friendly agent, and the skin-friendly agent comprises the following raw materials in parts by mass:

[0036] 33-43% of water-based polyurethane resin;

[0037] 25-35% of siloxane polymer;

[0038] 3-13% of ethylene glycol butyl ether;

[0039] 1-7% of stabilizer;

[0040] 12-18% of alcohol;

[0041] 1.5-2.5% of catalyst;

[0042] 2.5-3.5% of flame retardant.

[0043] The skin-friendly tablecloth provided by the application comprises a PVC layer, and the thickness of the PVC layer is 0.08-0.20 mm.

[0044] The skin-friendly tablecloth provided by the application further comprises an ink printing layer, and the ink printing layer is prepared from raw materials comprising the following mass percentage contents:

[0045] 7% of water; 20% of alcohol; 40% of modified water-soluble polyurethane; 30% of pigment; 0.5% of neutralizing agent; 1.2% of auxiliary agent; and 1.3% of ether organic solvent.

[0046] The modified water-soluble polyurethane is selected from solvent type polyurethane coating;

[0047] The volume percentage content of the alcohol is 38%-52%;

[0048] The neutralizing agent is selected from potassium hydroxide;

[0049] The auxiliary agent is selected from thermal stabilizers: calcium zinc stabilizers;

[0050] The ether organic solvent is selected from ethyl acetate ether.

[0051] The skin-friendly tablecloth provided by the application further comprises a skin-friendly layer prepared from a skin-friendly agent, wherein the skin-friendly agent comprises the following raw materials in mass percentage:

[0052] The skin-friendly agent provided by the application further comprises 33-43% of water-based polyurethane resin, preferably 33%, 35%, 37%, 40%, 43%, or any value between 33% and 43%.

[0053] The skin-friendly agent provided by the application further comprises 25-35% of silicone polymer, preferably 25%, 27%, 29%, 30%, 32%, 35%, or any value between 25% and 35%. The silicone polymer is selected from acrylic resin modified silicone polymer.

[0054] The skin-friendly agent provided by the application further comprises 3-13% of ethylene glycol butyl ether, preferably 3%, 5%, 7%, 10%, 13%, or any value between 3% and 13%.

[0055] The skin-friendly agent provided by the application further comprises 1-7% of stabilizer, preferably 1%, 3%, 5%, 7%, or any value between 1% and 7%. The stabilizer is selected from thermal stabilizers, preferably calcium zinc stabilizers.

[0056] The skin-friendly agent provided by the application further comprises 12-18% of alcohol, preferably 12%, 14%, 15%, 16%, 18%, or any value between 12% and 18%. The alcohol is selected from edible alcohol with a volume percentage of 95%.

[0057] The skin-friendly agent provided by the application further comprises 1.5-2.5% of catalyst, preferably 1.5%, 2%, 2.5%, or any value between 1.5% and 2.5%. The catalyst is selected from T-12 catalyst.

[0058] The skin-friendly agent provided by the application further comprises 2.5-3.5% of flame retardant, preferably 2.5%, 3%, 3.5%, or any value between 2.5% and 3.5%. The flame retardant is selected from water-based polyurethane flame retardant.

[0059] The application further provides a preparation method of the skin-friendly tablecloth, comprising the following steps:

[0060] A) After the PET water-based release agent is coated on the surface of the PET film and dried, water-based ink is printed to obtain an ink printing layer;

[0061] B) transferring the ink printed layer to the surface of the PVC film, coating a skin-friendly agent on the surface of the ink printed layer, drying, and then winding to obtain a skin-friendly tablecloth.

[0062] The PET water-based release agent is prepared first, and the raw materials for preparing the PET water-based release agent comprise:

[0063] water 10-30%, edible alcohol 15-35%, water-soluble polyurethane copolymer (synthesized from dimethylol propionic acid (DMPA) and triethylamine (TEA), and the mass fraction of triethylamine is about 1.77%) 35-45%, titanium white powder 5%, PVC powder 15-20%, and DOA oil 10%.

[0064] The raw materials for preparing the PET water-based release agent provided by the application comprise 10-30% of water, preferably 10%, 15%, 20%, 25%, 30%, or any value between 10% and 30%.

[0065] The raw materials for preparing the PET water-based release agent provided by the application further comprise 15-35% of edible alcohol, preferably 15%, 20%, 25%, 30%, 35%, or any value between 15% and 35%.

[0066] The raw materials for preparing the PET water-based release agent provided by the application further comprise 35-45% of water-soluble polyurethane (synthesized from dimethylol propionic acid (DMPA) and triethylamine (TEA)), preferably 35%, 40%, 45%, or any value between 35% and 45%.

[0067] The raw materials for preparing the PET water-based release agent provided by the application further comprise 5% of titanium white powder.

[0068] The raw materials for preparing the PET water-based release agent provided by the application further comprise 15-20% of PVC powder, preferably 15%, 16%, 17%, 18%, 19%, 20%, or any value between 15% and 20%.

[0069] The raw materials for preparing the PET water-based release agent provided by the application further comprise 10% of DOA oil. DOA is the abbreviation of dioctyl adipate, also known as di(2-ethylhexyl) adipate.

[0070] The raw materials are mixed and stirred first, and then stored for 12 hours of reaction, and a PET water-based release agent is coated on a high-speed coating machine with a 120-mesh doctor blade printing plate. The machine speed of the coating machine is 130-180 m / s, the oven temperature is 150-200 DEG C, and the consistency of the water-based release agent is controlled at 60 m / s.

[0071] Then, an aqueous ink is prepared to prepare the ink printing layer. The ink printing layer is prepared from raw materials including the following mass percentage:

[0072] Water 7%; alcohol 20%; modified water-soluble polyurethane 40%; pigment 30%; neutralizing agent 0.5%; auxiliary agent 1.2%; ether organic solvent 1.3%.

[0073] The modified water-soluble polyurethane is selected from solvent-based polyurethane coatings.

[0074] The volume percentage of the alcohol is 38% to 52%.

[0075] The neutralizing agent is selected from potassium hydroxide.

[0076] The auxiliary agent is selected from thermal stabilizers: calcium-zinc stabilizers.

[0077] The ether organic solvent is selected from ethyl acetate.

[0078] The above raw materials are blended to prepare a printing aqueous ink that is easy to color and does not easily block the screen holes of the dry plate. Then, the aqueous ink is printed on the surface of the release layer of the PET film to obtain an ink printing layer. The printing speed is 110 to 180 m / s, preferably 130 ± 10 m / s, the printing wind speed is 60 m / s, and the oven temperature is about 60°C.

[0079] Next, the ink printing layer is transferred to the surface of the PVC film, a skin-friendly agent is coated on the surface of the ink printing layer, and after drying, it is wound to obtain a skin-friendly tablecloth.

[0080] Preferably, the present application selects a transfer coating baking integrated molding equipment, and the transfer, coating and drying steps are carried out in the transfer coating baking integrated molding equipment. The machine speed during production is controlled between 20 and 30 meters per second, the temperature is set between 130 and 160°C, and the air bellow wind speed is controlled at 60 m / s.

[0081] The ratio of pure water to the skin-friendly agent printed on the screen roller is controlled at 1KG:50KG, and the surface is formed into a skin-friendly layer after high-temperature 130 to 160°C oven molding. The oven conveying tension is controlled at about 1.5KG to ensure that the high-elasticity yarn does not stretch and deform.

[0082] The preparation method of the skin-friendly agent is that the raw materials of the skin-friendly agent are mixed and stirred at a high speed under the condition of 180°C, and a floating white liquid is obtained after 24 hours of closed reaction. The prepared skin-friendly agent has a 48-hour shelf life, and the best coating effect is obtained when it is used 1 hour after preparation. If the time is too long, the surface will be easily skinned,

[0083] In the present application, by the formula and compatible process of the specific kind of release layer, ink printing layer and skin-friendly layer, the water-based release film transfer surface is coated with skin-friendly agent to be compatible and not easy to delaminate.

[0084] The product focuses on environmental protection, green, healthy skin, and meets the high-end customer group with high environmental protection standards. The production cost is 10% to 20% lower than the existing preparation process, the production cycle is short, the production capacity is high, and the needs of consumers can be met. The product quality is stable, the pattern is exquisite, the hand feeling is comfortable, and the consumers can feel novel and super value.

[0085] The skin-friendly tablecloth provided by the present application is coated with a skin-friendly layer on the PVC surface, so that the rigid PVC film is healthy and comfortable to the skin, green and environmentally friendly, has the properties of pressure resistance, acid and alkali resistance, temperature insulation, oil stain resistance, easy cleaning and the like, and is a necessity for modern home and catering places (especially western food). The product quality is stable.

[0086] In order to further understand the present application, the skin-friendly tablecloth and the preparation method thereof provided by the present application will be described below in combination with examples, and the protection scope of the present application is not limited by the following examples.

[0087] In the following examples, the volume concentration of edible alcohol is 38% to 52% unless otherwise specified.

[0088] In the following examples, the raw materials for preparing the water-based ink, the modified water-soluble polyurethane is selected from solvent-based polyurethane coatings.

[0089] The volume percentage of the alcohol is 38% to 52%;

[0090] The neutralizing agent is selected from potassium hydroxide;

[0091] The auxiliary agent is selected from thermal stabilizer: calcium zinc stabilizer;

[0092] The ether organic solvent is selected from ethyl acetate.

[0093] In the raw materials for preparing the skin-friendly agent, the siloxane polymer is selected from acrylic resin modified siloxane polymer;

[0094] The stabilizer is selected from thermal stabilizer: calcium zinc stabilizer;

[0095] The catalyst is selected from T-12 catalyst;

[0096] The flame retardant is selected from water-based polyurethane flame retardant.

[0097] Example 1

[0098] 1. PET water-based release agent ratio: water 7%, edible alcohol 28%, polyurethane water-soluble copolymer 35%, titanium dioxide 5%, PVC powder 15%, DOA oil 10%; mix with high-speed mixer for 30 minutes, store for 12 hours or so, use 120 mesh coating and printing plate on PET film surface on high-speed coater for PET water-based release coating printing production, coating machine speed is 130±10 m / s, oven temperature control is between 160±10℃, water-based release thick consistency control is 60 m / s, get PET film coated with release film

[0099] 2. Water-based ink blending: water-based ink ratio water 7%, alcohol 20%, modified water-soluble polyurethane 40%, pigment 30%, neutralizing agent 0.5%, auxiliary agent 1.2%, ether organic solvent 1.3%. The water-based ink is blended to be easy to color and not easy to dry plate mesh block; then, the water-based ink is printed on the surface of the release film, the printing machine speed reaches 130±10 m / s, the printing wind power reaches 60 m / s, and the oven temperature is about 60℃.

[0100] 3. The preparation of skin-friendly agent: water-based polyurethane resin (38%), siloxane polymer compound (30%), ethylene glycol butyl ether (8%), stabilizer (4%), edible alcohol 95% VOL (15%), catalyst (2%), flame retardant (3%) are fully stirred and mixed at 180℃ high temperature and 120M / s high-speed mixer, and a white liquid is obtained after 24 hours of closed reaction. The prepared skin-friendly agent is coated and printed within 1 hour of preparation.

[0101] The ink printing layer is transferred to the surface of the PVC film, the skin-friendly agent is coated on the surface of the ink printing layer, and after drying, it is wound to obtain a skin-friendly tablecloth. Among them, the steps of transfer, coating and drying are carried out in a transfer, coating and baking integrated equipment, the machine speed during production is controlled to be 30±5M, the temperature is set to be between 160±10℃, and the air bellow wind power is controlled to be 60 m / s. The pure water ratio of the skin-friendly agent coating screen roller 120 mesh is controlled to be 1KG:50KG, and the skin-friendly layer is formed on the surface after high-temperature 160±10℃ oven forming. The oven conveying tension is controlled to be about 1.5KG to ensure that the high-elasticity yarn does not stretch and deform.

[0102] Example 2

[0103] 1. PET water-based release agent ratio: water 10%, edible alcohol 25%, polyurethane water-soluble copolymer 45%, titanium dioxide 5%, PVC powder 15%, DOA oil 10%; mix with high-speed mixer for 30 minutes, seal for 12 hours or so, use 120 mesh coating and scraping printing plate on PET film surface to perform PET water-based release coating printing production on high-speed coating machine, coating machine speed is 130±10 m / s, oven temperature is controlled between 160±10℃, water-based release thickness is controlled at 60 m / s, to get PET film coated with release film

[0104] 2. Water-based ink blending: water-based ink blending water 7%, alcohol 20%, modified water-soluble polyurethane 40%, pigment 30%, neutralizing agent 0.5%, auxiliary agent 1.2%, ether organic solvent 1.3%. The water-based ink is blended to be easy to color and not easy to dry plate mesh block; then, the water-based ink is printed on the surface of the release film, the printing speed reaches 130±10 m / s, the printing wind power reaches 60 m / s, and the oven temperature is about 60℃.

[0105] 3. Preparation of skin-friendly agent: high temperature of 180℃ and high speed of 120M / s mixer are used to mix water-based polyurethane resin (38%), siloxane polymer compound (30%), ethylene glycol butyl ether (8%), stabilizer (4%), edible alcohol 95% VOL (15%), catalyst (2%), and flame retardant (3%) to form a floating white liquid after 24 hours of closed reaction. The prepared skin-friendly agent is coated and printed within 1 hour of preparation.

[0106] The ink printing layer is transferred to the surface of the PVC film, the skin-friendly agent is coated on the surface of the ink printing layer, and after drying, it is wound to obtain a skin-friendly tablecloth. The steps of transferring, coating and drying are carried out in a transfer-coating-baking integrated device, the machine speed is controlled at 30±5M / s during production, the temperature is set between 160±10℃, and the air bellow wind power is controlled at 60 m / s. The pure water ratio of the skin-friendly agent coating screen roller 120 mesh is controlled at 1KG:50KG, and the skin-friendly layer is formed on the surface after high temperature 160±10℃ oven forming. The oven conveying tension is controlled at about 1.5KG to ensure that the high elastic yarn does not stretch and deform.

[0107] Test example-hand feeling test

[0108] Prepare test equipment and samples: PVC tablecloth samples, hand feeling measuring instrument (hand feel meter), detection plate, etc.

[0109] Cut the PVC tablecloth sample into standard size as required, place it on the detection plate for testing. Use the hand feeling measuring instrument (hand feel meter) to measure the hand feeling of the tablecloth, and measure the softness, elasticity, touch feeling and other indicators of the tablecloth.

[0110] The results show that the tablecloth of Example 1 exhibits higher softness and touch comfort because of the different ingredient ratio and material used in the formulation.

[0111] The tablecloth of Example 2 has higher elasticity and resilience because of the different polyurethane water-soluble copolymer ratio used in the formulation.

[0112] The tablecloth of Example 1 is more intimate and smooth to the skin when in contact because of the formulated skin-friendly agent used in the formulation.

[0113] The tablecloth of Example 2 presents a more uniform hand distribution during touch because of the different water-based ink formulation ratio used in the formulation.

[0114] The above only describes the preferred embodiments of the present application, and it should be noted that for those skilled in the art, without departing from the principles of the present application, a number of improvements and refinements can be made, and these improvements and refinements should also be considered as the protection scope of the present application.

Claims

1. A skin-friendly tablecloth, characterized in that, The skin-friendly tablecloth comprises a PVC layer, an ink printing layer and a skin-friendly layer which are sequentially compounded, wherein the skin-friendly layer is prepared from a skin-friendly agent comprising the following raw materials in mass percentage: Water-based polyurethane resin 33-43%; Silicone polymer 25-35%; Ethylene glycol butyl ether 3-13%; Stabilizer 1-7%; Alcohol 12-18%; Catalyst 1.5-2.5%; Flame retardant 2.5-3.5%; The preparation method of the skin-friendly tablecloth comprises the following steps: A) applying a PET water-based release agent on the surface of a PET film, drying and then printing water-based ink to obtain an ink printing layer; B) transferring the ink printing layer to the surface of a PVC film, applying a skin-friendly agent on the surface of the ink printing layer, drying and then winding to obtain the skin-friendly tablecloth.

2. The skin-friendly tablecloth according to claim 1, characterized in that, The silicone polymer is selected from acrylic resin modified silicone polymer; The stabilizer is selected from thermal stabilizer: calcium-zinc stabilizer; The alcohol is selected from edible alcohol with a volume percentage of 38-52%; The catalyst is selected from T-12 catalyst; The flame retardant is selected from water-based polyurethane flame retardant.

3. The skin-friendly tablecloth according to claim 1, wherein The ink printing layer is prepared from the following raw materials in mass percentage: Water 7%; alcohol 20%; modified water-soluble polyurethane 40%; pigment 30%; neutralizing agent 0.5%; auxiliary agent 1.2%; ether organic solvent 1.3%.

4. The skin-friendly tablecloth according to claim 3, characterized in that, The modified water-soluble polyurethane is selected from solvent type polyurethane coating; The volume percentage of the alcohol is 38-52%; The neutralizing agent is selected from potassium hydroxide; The auxiliary agent is selected from thermal stabilizer: calcium-zinc stabilizer; The ether organic solvent is selected from acetic ether.

5. The skin-friendly tablecloth according to claim 1, wherein The thickness of the PVC layer of the skin-friendly tablecloth is 0.08-0.2 mm.

6. A method of making a skin-friendly tablecloth according to any one of claims 1 to 5, characterized in that, The preparation method comprises the following steps: A) applying a PET water-based release agent on the surface of a PET film, drying and then printing water-based ink to obtain an ink printing layer; B) transferring the ink printing layer to the surface of a PVC film, applying a skin-friendly agent on the surface of the ink printing layer, drying and then winding to obtain the skin-friendly tablecloth.

7. The preparation method according to claim 6, characterized in that, The preparation raw materials of the PET water-based release agent comprise: Water 10-30%, edible alcohol 15-35%, water-soluble polyurethane 35-45%, titanium dioxide 5%, PVC powder 15-20% and DOA oil 10%.

8. The preparation method according to claim 6, characterized in that, In step A), the coating speed is 130-180 m / s and the drying temperature is 150-200℃; The printing speed of the water-based ink printing machine reaches 110-180 m / s, the printing air force reaches 60±10 m / s and the oven temperature is 60±5℃.

9. The preparation method according to claim 6, characterized in that, In step B), the transferring, coating and drying steps are carried out in a transferring, coating and baking integrated equipment, the production speed is controlled between 20-30 m / s, the temperature is set between 130-160℃ and the air box air force is controlled at 60 m / s.

10. The method of claim 9, wherein, The skin-friendly agent is coated by a 120-mesh screen roller, the ratio of pure water is controlled at 1 kg:50 kg, the surface is formed into a skin-friendly layer by high-temperature baking at 130-160℃.