A double-sided bright lace sheet material and a preparation method and application thereof

Abstract

The present application provides a kind of double-sided bright lace sheet, including the PET layer, back adhesive layer, embossed lace sheet, printing layer and transparent PVC layer that are sequentially compounded;Or, including the PET layer, back adhesive layer, embossed lace sheet, transparent PVC layer and printing layer that are sequentially compounded;The back adhesive layer is prepared from thermoplastic acrylic resin mixture, organic solvent and silicon powder.The present application uses PET as base material, by back adhesive layer and embossed lace sheet sticking, obtain double-sided bright lace sheet, cost is significantly reduced, and, with PET as base material, the double-sided bright lace sheet obtained is soft in texture, and has good drape, combined with lace modeling, with decorative function, on this basis, product is not deformed and has stronger tear resistance.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of household products, and particularly relates to a double-sided bright lace sheet material and a preparation method and application thereof. BACKGROUND

[0002] Table cloth is an item used to cover the table or desk surface to prevent dirt or increase the aesthetic appearance. According to the production process, it is mainly divided into two categories: plastic and textile. The plastic category includes PVC table cloth, EVA table cloth, PEVA table cloth, hot stamping table cloth, cotton backing PVC table cloth, polyethylene table cloth such as PP table cloth, and flow casting film table cloth. The textile category includes lace table cloth.

[0003] Among them, the plastic table cloth is widely used in daily life due to its easy cleaning, convenience and practicality, and it has strong practicability. However, the current plastic table cloth has high cost, the PET material has low cost, but the PET film has poor heat resistance, and is prone to deformation during preparation and subsequent use. In addition, due to the surface tension of the PET film, the bonding force between the raised lace sheet material and the PET film is poor.

[0004] Therefore, there is an urgent need for a table cloth with low cost, decorative function and excellent performance. SUMMARY

[0005] Therefore, the technical problem to be solved by the present application is to provide a double-sided bright lace sheet material and a preparation method and application thereof. The double-sided bright lace sheet material provided by the present application has low cost, decorative function and excellent performance.

[0006] The present application provides a double-sided bright lace sheet material, which comprises a PET layer, a back adhesive layer, a raised lace sheet material, a printing layer and a transparent PVC layer which are sequentially compounded.

[0007] Alternatively, the double-sided bright lace sheet material comprises a PET layer, a back adhesive layer, a raised lace sheet material, a transparent PVC layer and a printing layer which are sequentially compounded.

[0008] Preferably, the raised lace sheet material is prepared from the following raw materials by mass:

[0009] Calcium carbonate filler 60-75 parts, diisononyl phthalate 25-35 parts, SG-5 resin powder 45-55 parts, heat stabilizer 1.5-2.5 parts, pigment powder 0.06-0.2 parts, titanium dioxide 0.01-0.15 parts, ACR aid 1.5-2.5 parts, stearic acid 0.25-0.4 parts, foaming aid 3 parts.

[0010] Preferably, the back adhesive layer is prepared from a mixture of thermoplastic acrylic resin, organic solvent and silicon powder.

[0011] Preferably, the back adhesive layer is prepared from the following raw materials by mass fraction:

[0012] 9-11 parts of transparent glue;

[0013] 9-11 parts of oil-based glue;

[0014] 10-30 parts of butanone;

[0015] 15-25 parts of ethyl acetate;

[0016] 10-20 parts of n-butyl acetate;

[0017] 15-35 parts of toluene;

[0018] 1-3 parts of silicon powder.

[0019] Preferably, the standard weight of the PET is (17±5) g / m 2 .

[0020] Preferably, the thickness of the raised lace sheet is 200-520 μm; the thickness of the PET layer is 12 μm, and the thickness of the transparent printed pattern layer is between 13-17 μm;

[0021] The thickness of the double-sided bright lace sheet product is 0.50-0.65 mm, and the width is 0.5-1.37 m.

[0022] The application also provides a preparation method of the above-mentioned double-sided bright lace sheet, comprising the following steps:

[0023] A) mixing the raw materials for preparing the raised lace sheet, and then placing them in the screw rod of a lace machine for high-temperature extrusion, plasticization and foaming to obtain foamed material;

[0024] The foamed material is scraped and coated through the discharge port of the front-end die of the screw rod into a gravure lace mold, heated and dried to form a raised lace sheet;

[0025] B) coating a back adhesive layer on the surface of the PET layer, then attaching the raised lace sheet to the surface of the back adhesive layer, then coating a printing layer on the other side of the raised lace sheet, and then hot-pressing the transparent PVC to obtain a double-sided bright lace sheet.

[0026] The application also provides a preparation method of the above-mentioned double-sided bright lace sheet, comprising the following steps:

[0027] a) mixing the raw materials for preparing the raised lace sheet, and then placing them in the screw rod of a lace machine for high-temperature extrusion, plasticization and foaming to obtain foamed material;

[0028] The foamed material is scraped and coated through the discharge port of the front-end die of the screw rod into a gravure lace mold, heated and dried to form a raised lace sheet;

[0029] b) coating the back adhesive layer on the surface of the PET layer, then attaching the embossed lace sheet on the surface of the back adhesive layer, then hot-pressing the other side of the embossed lace sheet with the transparent PVC, coating the printing layer, drying, and winding to obtain the double-sided bright lace sheet.

[0030] Preferably, the primary plasticizing temperature of the screw rod of the lace machine is between 160-170 DEG C, and the secondary plasticizing temperature is between 175-185 DEG C.

[0031] The temperature of the front end die of the screw rod is 170±5 DEG C.

[0032] The tension of the hot-pressing adhesive roller is 5.2±2 kgf / m2, the winding traction tension is 4±2 kgf / m2, the hot-pressing temperature is 165±5 DEG C, the plate roller oil temperature is 185 DEG C±10 DEG C, the adhesive roller water temperature is 10 DEG C±1 DEG C, the cooling wheel water temperature is 10 DEG C±1 DEG C, the main machine speed is 8±1 m / min, the demolding speed is 5±1 m / min, the cooling wheel speed is 5±1 m / min, the traction wheel speed is 5±1 m / min, the winding speed is 10±1 m / min, and the air pressure setting is 4-6 KG.

[0033] In step b), the running speed of the drying forming machine table main machine is 13±1 m / min, and the winding speed is 13±1 m / min, and the oven temperature is 150 DEG C±5 DEG C.

[0034] The application further provides the application of the double-sided bright lace sheet in tablecloths and table mats.

[0035] Compared with the prior art, the application provides a double-sided bright lace sheet, which comprises a PET layer, a back adhesive layer, an embossed lace sheet, a printing layer and a transparent PVC layer which are sequentially compounded, or comprises a PET layer, a back adhesive layer, an embossed lace sheet, a transparent PVC layer and a printing layer which are sequentially compounded, and the back adhesive layer is prepared from a thermoplastic acrylic resin mixture, an organic solvent and silicon powder. The double-sided bright lace sheet is obtained by hot-pressing the back adhesive layer and the embossed lace sheet with PET as the base material, and the cost is significantly reduced. Moreover, the double-sided bright lace sheet obtained by taking PET as the base material has soft texture and good draping property, and has decorative function in combination with the lace modeling. On this basis, the product is not deformed and has stronger tear resistance. DETAILED DESCRIPTION

[0036] The application provides a double-sided bright lace sheet, which comprises a PET layer, a back adhesive layer, an embossed lace sheet, a printing layer and a transparent PVC layer which are sequentially compounded.

[0037] Or, the double-sided bright lace sheet comprises a PET layer, a back adhesive layer, an embossed lace sheet, a transparent PVC layer and a printing layer which are sequentially compounded.

[0038] The PET film is used as the base material, the product cost is significantly reduced, the PET film is soft and has good draping property, and the product has a decorative function when combined with the lace pattern.

[0039] Therefore, the double-sided bright lace sheet product is not deformed and has stronger tear resistance, and the PET film and the raised lace sheet have high bonding force by controlling the process conditions, especially the process of heat pressing and combining the adhesive layer arranged between the PET film and the raised lace sheet.

[0040] In the present application, the standard weight of the 12 mu m thick PET film is (17±5) g / m 2 , preferably any value between 12, 15, 17, 20, 22, or (17±5) g / m 2 .

[0041] The raised lace sheet is prepared from the following raw materials by mass fraction:

[0042] 60-75 parts of calcium carbonate filler, 25-35 parts of diisononyl phthalate, 45-55 parts of SG-5 resin powder, 1.5-2.5 parts of heat stabilizer, 0.06-0.2 parts of pigment powder, 0.01-0.15 parts of titanium white powder, 1.5-2.5 parts of ACR auxiliary agent, 0.25-0.4 parts of stearic acid, and 9-10 parts of foaming aid.

[0043] The heat stabilizer is selected from 1801 stearic acid, and the foaming aid is selected from foaming aid of type AC-6000.

[0044] The preparation raw material of the raised lace sheet provided by the present application includes 60-75 parts of calcium carbonate filler, preferably 60, 65, 70, 75, or any value between 60-75 parts.

[0045] The preparation raw material of the raised lace sheet provided by the present application further includes diisononyl phthalate 25-35 parts, preferably 25, 30, 35, or any value between 25-35 parts.

[0046] The preparation raw material of the raised lace sheet provided by the present application further includes SG-5 resin powder 45-55 parts, preferably 45, 50, 55, or any value between 45-55 parts.

[0047] The preparation raw material of the raised lace sheet provided by the present application further includes heat stabilizer 1.5-2.5 parts, preferably 1.5, 2.0, 2.5, or any value between 1.5-2.5 parts. The heat stabilizer is selected from 1801 stearic acid.

[0048] The preparation raw material of the raised lace sheet provided by the present application further comprises 0.06-0.2 parts of pigment powder, preferably 0.06, 0.1, 0.12, 0.15, 0.2, or any value between 0.06 and 0.2. The present application does not have special restrictions on the specific type of the pigment powder, which can be specifically selected according to the color of the lace sheet.

[0049] The preparation raw material of the raised lace sheet provided by the present application further comprises 0.01-0.15 parts of titanium white powder, preferably 0.01, 0.05, 0.1, 0.15, or any value between 0.01 and 0.15.

[0050] The preparation raw material of the raised lace sheet provided by the present application further comprises 1.5-2.5 parts of ACR auxiliary agent, preferably 1.5, 2.0, 2.5, or any value between 1.5 and 2.5. In the present application, the ACR auxiliary agent is selected from ACR-135A, with a specification of 25KG / bag, and is a powder type.

[0051] The preparation raw material of the raised lace sheet provided by the present application further comprises 0.25-0.4 parts of stearic acid, preferably 0.25, 0.3, 0.35, 0.4, or any value between 0.25 and 0.4.

[0052] The preparation raw material of the raised lace sheet provided by the present application further comprises 3 parts of foaming auxiliary agent. The foaming auxiliary agent is selected from a foaming auxiliary agent with a model of AC-6000.

[0053] In the present application, by arranging the back adhesive layer between the composite PET layer and the raised lace sheet, and combining with a specific preparation process, it can be ensured that the PET film layer does not deform during preparation and use, and has good bonding force with the raised lace sheet.

[0054] The back adhesive layer is prepared from a mixture of thermoplastic acrylic resin, an organic solvent, and silicon powder.

[0055] The organic solvent is selected from one or more of butanone, ethyl acetate, n-butyl acetate, and toluene.

[0056] Specifically, the back adhesive layer is prepared from the following raw materials by mass fraction:

[0057] 9-11 parts of transparent glue;

[0058] 9-11 parts of oily glue;

[0059] 10-30 parts of butanone;

[0060] 15-25 parts of ethyl acetate;

[0061] 10-20 parts of n-butyl acetate;

[0062] 15-35 parts of toluene;

[0063] 1-3 parts of silicon powder.

[0064] In the present application, the preparation raw material of the back adhesive layer comprises 9-11 parts of transparent glue, preferably 9, 10, 11, or any value between 9-11. The transparent glue is pre-coated glue, and the source of the pre-coated glue is not particularly limited in the present application, and it can be generally purchased. The specific composition is preferably as follows:

[0065] Table 1

[0066] Substance Ingredient Name Amount Range (wt%) Modified waterborne polyurethane 23±1 Alcohol solvent 27.8±1 Water 47.7±1 Silica 1.5±1 Leveling agent 0.03

[0067] The preparation raw material of the back adhesive layer also comprises 9-11 parts of oil-based glue, preferably 9, 10, 11, or any value between 9-11. The oil-based glue is back-coated glue, and the source of the back-coated glue is not particularly limited in the present application, and it can be generally purchased. The specific composition is preferably as follows:

[0068] Table 2

[0069] Substance Ingredient Name Amount Range (wt%) Modified acrylic resin 25±1 Solvent (butanone / toluene / ethyl acetate) 74±1 Silica 2±1

[0070] The preparation raw material of the back adhesive layer also comprises 10-30 parts of butanone, preferably 10, 15, 20, 25, 30, or any value between 10-30.

[0071] The preparation raw material of the back adhesive layer also comprises 10-20 parts of n-butyl acetate, preferably 10, 12, 15, 17, 20, or any value between 10-20.

[0072] The preparation raw material of the back adhesive layer also comprises 15-25 parts of ethyl acetate, preferably 15, 17, 20, 22, 25, or any value between 15-25.

[0073] The preparation raw material of the back adhesive layer also comprises 15-35 parts of toluene, preferably 15, 20, 25, 30, 35, or any value between 15-35.

[0074] The preparation raw material of the back adhesive layer also comprises 1-3 parts of silicon powder, preferably 1, 2, 3, or any value between 1-3.

[0075] Mix the above raw materials to obtain a back adhesive, the solid content of the back adhesive is 20±2wt%, and the viscosity at 25°C is 20±3s.

[0076] The back adhesive layer provided by the present application is a hot stamping back adhesive for plastic, which is coated on the surface of PET and adhered to the convex grain lace sheet. The coating amount of the adhesive is 0.8-1.6g / m 2The coated anilox roller is 175-200 mesh, preferably 180 mesh, the coating speed is 80±5 m / min, and the highest temperature zones of the drying tunnel are 100 DEG C, 130 DEG C, 150 DEG C, 150 DEG C, and 120 DEG C, respectively.

[0077] In the present application, the thickness of the raised lace sheet is 200-520 mu m, the thickness of the PET film is 12 mu m, and the thickness of the transparent printing pattern layer is 13-17 mu m.

[0078] The thickness of the double-sided bright lace sheet product is 0.50 mm-0.65 mm, and the width is 0.5 m-1.37 m.

[0079] The present application also provides a preparation method of the above-mentioned double-sided bright lace sheet, comprising the following steps:

[0080] A) mixing raw materials for preparing the raised lace sheet, and then placing the raw materials in a screw of a lace machine to perform high-temperature extrusion plasticization foaming, to obtain a foaming material;

[0081] The foaming material is scraped and coated to a gravure lace mold through a screw front end die discharge port, and then heated and dried to form a raised lace sheet.

[0082] B) coating a back adhesive layer on the surface of the PET layer, then attaching the raised lace sheet to the surface of the back adhesive layer, then coating a printing layer on the other side of the raised lace sheet, and then hot-pressing the transparent PVC to obtain a double-sided bright lace sheet.

[0083] The present application also provides a preparation method of the above-mentioned double-sided bright lace sheet, comprising the following steps:

[0084] a) mixing raw materials for preparing the raised lace sheet, and then placing the raw materials in a screw of a lace machine to perform high-temperature extrusion plasticization foaming, to obtain a foaming material;

[0085] The foaming material is scraped and coated to a gravure lace mold through a screw front end die discharge port, and then heated and dried to form a raised lace sheet.

[0086] b) coating a back adhesive layer on the surface of the PET layer, then attaching the raised lace sheet to the surface of the back adhesive layer, then hot-pressing the transparent PVC to the other side of the raised lace sheet, and then coating a printing layer, drying, and winding to obtain a double-sided bright lace sheet.

[0087] The first plasticization temperature of the screw of the lace machine is 160-170 DEG C, and the second plasticization temperature is 175-185 DEG C; the first plasticization temperature is 164±5 DEG C in a first zone, 165±5 DEG C in a second zone, and 168±5 DEG C in a third zone, and the second plasticization temperature is 170±5 DEG C in a fourth zone, 172±5 DEG C in a fifth zone, and 174±5 DEG C in a sixth zone.

[0088] The temperature of the front end die of the mandrel is 170±5 DEG C. The front end die of the mandrel is divided into seven areas, including area one: 170±5 DEG C, area two: 170±5 DEG C, area three: 170±5 DEG C, area four: 170±5 DEG C, area five: 170±5 DEG C, area six: 170±5 DEG C, and area seven: 170±5 DEG C.

[0089] The glue roller tension of the heat pressing and bonding is 5.2±2 kgf / m2, the winding traction tension is 4±2 kgf / m2, the bonding temperature is 165±5 DEG C, the plate roller oil temperature is 185 DEG C±10 DEG C, the glue roller water temperature is 10 DEG C±1 DEG C, the cooling wheel water temperature is 10 DEG C±1 DEG C, the main machine speed is 8±1 m / min, the stripping speed is 5±1 m / min, the cooling wheel speed is 5±1 m / min, the traction wheel speed is 5±1 m / min, the winding speed is 10±1 m / min, and the air pressure setting is 4-6 KG.

[0090] In step b), the running speed of the drying and forming machine main machine is 13±1 m / min, and the winding speed is 13±1 m / min, and the oven temperature is 150 DEG C±5 DEG C.

[0091] The application also provides application of the double-sided bright lace sheet in tablecloths and table mats.

[0092] The application uses PET as a base material, and the double-sided bright lace sheet is obtained by bonding the back adhesive layer and the relief lace sheet, so that the cost is significantly reduced, and the double-sided bright lace sheet obtained by using PET as a base material is soft in texture and good in draping, has a decorative function in combination with lace modeling, and is not deformed and has stronger tear resistance.

[0093] In order to further understand the application, the double-sided bright lace sheet and the preparation method and application thereof provided by the application are described below in combination with examples, and the protection scope of the application is not limited by the following examples.

[0094] Example 1

[0095] 1. The raw materials of calcium carbonate filler (1000 mesh) 75 parts, diisononyl phthalate 35 parts, resin powder (SG-5 resin powder) 55 parts, heat stabilizer 1801 (stearic acid) 2.5 parts, pigment powder 0.2 parts, titanium dioxide 0.15 parts, ACR aid ACR-135A: 2.5 parts, stearic acid 0.4 parts, foaming aid (model AC-6000) 3 parts are weighed according to the proportion, then stirred uniformly in the mixing equipment, and then loaded into the storage barrel. The mixed powder particles are injected into the lace machine through the opening of the storage barrel and the closing of the baffle above the feeding groove. After foaming by high temperature extrusion, it is injected into the 7 area discharge port of the lace die at the front end of the lace machine through the scraper. Through the high temperature heat conduction oil in the lace die, it is heated and dried to form a convex lace sheet.

[0096] 2. Mix 11 parts of transparent glue, 11 parts of oil-based glue, 30 parts of butanone, 25 parts of ethyl acetate, 20 parts of n-butyl acetate, 35 parts of toluene and 3 parts of silica powder to obtain a back adhesive. The solid content of the back adhesive is 20±2wt%, and the viscosity at 25℃ is 20±3s.

[0097] The back adhesive is coated on the surface of PET. The coating amount of the adhesive is 1.6g / m 2 , the coating anilox roller is 180 mesh, the coating speed is 80m / min, and the highest temperature zone of the drying oven is 100℃, 130℃, 150℃, 150℃ and 120℃, respectively.

[0098] 3. The convex lace sheet is attached to the surface of the back adhesive layer, and then a printing layer is coated on the other side of the convex lace sheet. Then, the transparent PVC is hot-pressed and laminated, and wound to obtain a double-sided bright lace sheet.

[0099] The glue roller tension of the hot lamination is 5.2±2kgf / ㎝2, the winding tension is 4±2kgf / ㎝2, the lamination temperature is 165±5℃, the plate roller oil temperature is 185℃±10℃, the glue roller water temperature is 10℃±1℃, the cooling wheel water temperature is 10℃±1℃, the main machine speed is 8±1m / min, the release speed is 5±1m / min, the cooling wheel speed is 5±1m / min, the traction wheel speed is 5±1m / min, the winding speed is 10±1m / min, and the air pressure setting is 4-6KG.

[0100] The main machine running speed of the drying forming machine is 13m / min(±1m / min), and the winding speed is 13m / min(±1m / min). The oven temperature is 150℃±5℃.

[0101] Example 2

[0102] 1. Weigh 75 parts of calcium carbonate filler (1000 mesh), 35 parts of diisononyl phthalate, 55 parts of resin powder (SG-5 resin powder), 2.5 parts of heat stabilizer 1801 (stearic acid), 0.2 parts of pigment powder, 0.15 parts of titanium white powder, 2.5 parts of ACR aid ACR-135A, 0.4 parts of stearic acid, and 3 parts of foaming aid (model AC-6000) according to the proportion, and then put them into a mixing device for stirring, and then put them into a storage barrel, manually push and pull to the edge of the lacing machine, and then use a row of hangers to hang and transport to the upper part of the feeding groove of the lacing machine, open the baffle at the lower part of the storage barrel, and then inject the mixed powder particles into the lacing machine, and then pass through the six lacing rod sections (164±5℃ for the first section, 165±5℃ for the second section, 168±5℃ for the third section; 170±5℃ for the fourth section, 172±5℃ for the fifth section, and 174±5℃ for the sixth section) through high-temperature extrusion for plasticizing and foaming, and then parallelly inject into the 7-region discharge port of the lacing die at the front end of the lacing rod, and then scrape and coat into the intaglio lacing die through a scraper, and then dry and form through the high-temperature heat conduction oil in the lacing die, and then get the embossed lacing sheet.

[0103] 2. Mix 11 parts of transparent glue, 11 parts of oil-based glue, 30 parts of butanone, 25 parts of ethyl acetate, 20 parts of n-butyl acetate, 35 parts of toluene, and 3 parts of silicon powder to obtain a back adhesive; the solid content of the back adhesive is 20±2wt%, and the viscosity at 25℃ is 20±3s.

[0104] The back adhesive is coated on the surface of PET. Among them, the coating amount of glue is 1.6g / m 2 , the coating screen roller is 180 mesh, the coating speed is 80m / min, and the highest temperature zone of the drying channel is 100℃, 130℃, 150℃, 150℃, and 120℃ respectively.

[0105] 3. The embossed lacing sheet is attached to the surface of the back adhesive layer, and then the other side of the embossed lacing sheet is hot-pressed with transparent PVC, and then a printing layer is coated, dried, and wound to obtain a double-sided bright lacing sheet.

[0106] The glue roller tension of the hot-pressing is 5.2±2kgf / ㎝2, the winding tension is 4±2kgf / ㎝2, the bonding temperature is 165±5℃, the plate roller oil temperature is 185℃±10℃, the glue roller water temperature is 10℃±1℃, the cooling wheel water temperature is 10℃±1℃, the main machine speed is 8±1m / min, the demolding speed is 5±1m / min, the cooling wheel speed is 5±1m / min, the traction wheel speed is 5±1m / min, the winding speed is 10±1m / min, and the air pressure is set to 4-6KG.

[0107] Drying forming machine main machine running speed: 13 m / min (±1 m / min); winding speed: 13 m / min (±1 m / min), oven temperature 150℃±5℃ between.

[0108] Performance test:

[0109] (1) Objective: Test the thermal insulation performance of thermal insulation materials under different use conditions.

[0110] Steps:

[0111] 1. Prepare test equipment and samples: thermometer, heat source, test samples (tablecloth prepared in Example 1 and Example 2), experimental containers, etc.

[0112] 2. Set up a constant temperature source in the laboratory, such as a heat source, and maintain a certain temperature.

[0113] 3. Place the thermal insulation material sample next to the heat source to simulate different use conditions, such as different humidity, different wind speed, etc.

[0114] 4. Use a thermometer to measure the temperature next to the heat source and the surface of the thermal insulation material, and record the data.

[0115] 5. Measure the thermal insulation material sample under each use condition multiple times to ensure the accuracy and repeatability of the test results.

[0116] 6. According to the measured temperature data, calculate and compare the thermal insulation performance indicators such as thermal conductivity under different use conditions.

[0117] 7. According to the test results, evaluate the thermal insulation performance of the thermal insulation material under different use conditions, and propose corresponding technical improvements and optimization suggestions.

[0118] The thermal conductivity of the tablecloth prepared in Example 1 and Example 2 is generally in the range of 0.02 to 1.0 W / (m·K) under standard temperature and humidity conditions (20℃, 50% relative humidity).

[0119] As the temperature rises, the thermal conductivity of the thermal insulation material may increase slightly, about 10-20% per 10℃ temperature rise.

[0120] Factors such as humidity and pressure have relatively small effects on thermal insulation performance, which can generally be ignored.

[0121] (2) Bonding force test

[0122] 1. Objective: Test the bonding force of the tablecloth with the weight.

[0123] Steps:

[0124] 1. Prepare the testing equipment and samples: tablecloth samples, flat surface, calibration weights of different weights.

[0125] 2. Lay the tablecloth sample flat on the testing surface.

[0126] 3. Place the calibration weights on different areas of the tablecloth.

[0127] 4. Slowly apply a vertical pulling force, attempting to move the tablecloth from the surface.

[0128] 5. Record the minimum force at which the tablecloth begins to move when the pulling force is applied.

[0129] 6. Repeat the above steps multiple times to obtain accurate results and calculate the average bond strength value.

[0130] 7. Based on the test results, evaluate the bond strength of the tablecloth with the weights and record the data.

[0131] 8. Compare the bond strengths of different tablecloth samples and propose corresponding technical improvements and optimization suggestions.

[0132] Test results: Using the tablecloths prepared in Example 1 and Example 2, there is a 50-80% probability that a weight of approximately 2-5 kg will remain firmly on the tablecloth.

[0133] 2. Objective: Test the bond strength of the tablecloth with the pulling force.

[0134] Steps:

[0135] 1. Prepare the testing equipment and samples: tablecloth samples, flat surface, equipment capable of applying a pulling force (such as clamps, ropes).

[0136] 2. Lay the tablecloth sample flat on the testing surface.

[0137] 3. Use equipment such as clamps or ropes to secure the tablecloth at one end.

[0138] 4. Gradually apply a pulling force to test the bond strength of the tablecloth with the pulling force.

[0139] 5. Record the force value at which the tablecloth begins to move when the pulling force is applied, and observe the movement.

[0140] 6. Perform multiple tests to obtain accurate results and calculate the average bond strength value.

[0141] 7. Based on the test results, evaluate the bond strength of the tablecloth with the pulling force and record the data.

[0142] 8. Compare the bond strengths of different tablecloth samples and propose corresponding technical improvements and optimization suggestions.

[0143] Using the tablecloths prepared in Examples 1 and 2, a horizontal pulling force was applied, and there was a 60-90% probability that the tablecloth would firmly adhere to the pulling force and not easily loosen or detach.

[0144] 3. Objective: Test the adhesion of tablecloths to humidity.

[0145] Steps:

[0146] 1. Prepare test equipment and samples: tablecloth samples, humidity control equipment or environment, flat surface.

[0147] 2. Lay the tablecloth sample flat on the test surface.

[0148] 3. Adjust the humidity of the environment to the set humidity level.

[0149] 4. Place the humidity control equipment next to the tablecloth to ensure even coverage of the entire tablecloth surface.

[0150] 5. Observe whether the tablecloth material deforms, sticks, or wrinkles under different humidity conditions.

[0151] 6. Record the adhesion of the tablecloth to humidity, including deformation, movement, etc.

[0152] 7. Conduct multiple tests to obtain accurate results and calculate the average adhesion.

[0153] 8. Based on the test results, evaluate the adhesion of the tablecloth to humidity and record the data.

[0154] 9. Compare the adhesion of different tablecloth samples and propose corresponding technical improvements and optimization suggestions.

[0155] As humidity increases, the adhesion between the tablecloths of Examples 1 and 2 and objects gradually increases. In a low relative humidity environment (30%), the adhesion is in the range of 30-50%. In a high relative humidity environment (70%), the adhesion is in the range of 70-90%.

[0156] The above is only a preferred embodiment of the present application. It should be noted that for those skilled in the art, without departing from the principles of the present application, several improvements and refinements can be made, which should also be considered within the scope of protection of the present application.

Claims

1. A double-sided lustrous lace sheet, characterized by, It comprises PET layer, back adhesive layer, embossed lace sheet, printing layer and transparent PVC layer which are compounded in sequence. Or, it comprises PET layer, back adhesive layer, embossed lace sheet, transparent PVC layer and printing layer which are compounded in sequence. The back adhesive layer is prepared from thermoplastic acrylic resin mixture, organic solvent and silicon powder. The back adhesive layer is prepared from the following raw materials in mass fraction: 9~11 parts of transparent glue; 9~11 parts of oily glue; 10~30 parts of butanone; 15~25 parts of ethyl acetate; 10~20 parts of n-butyl acetate; 15~35 parts of toluene; 1~3 parts of silicon powder; The embossed lace sheet is prepared from the following raw materials in mass fraction: Calcium carbonate filler 60~75 parts, diisononyl phthalate 25~35 parts, SG~5 resin powder 45~55 parts, heat stabilizer 1.5~2.5 parts, pigment powder 0.06~0.2 parts, titanium white powder 0.01~0.15 parts, ACR aid 1.5~2.5 parts, stearic acid 0.25~0.4 parts, foaming aid 3 parts; The preparation method of the double-sided bright lace sheet comprises the following steps: A) mixing the raw materials for preparing the embossed lace sheet, then placing them in the screw rod of a lace machine for high-temperature extrusion plasticization and foaming to obtain foaming material; The foaming material is scraped to the intaglio lace mold through the discharge port of the front-end die of the screw rod, and then heated and dried to form the embossed lace sheet; B) coating the back adhesive layer on the surface of the PET layer, then attaching the embossed lace sheet to the surface of the back adhesive layer, then coating the printing layer on the other side of the embossed lace sheet, and then hot-pressing the transparent PVC to obtain the double-sided bright lace sheet; Or, the preparation method of the double-sided bright lace sheet comprises the following steps: a) mixing the raw materials for preparing the embossed lace sheet, then placing them in the screw rod of a lace machine for high-temperature extrusion plasticization and foaming to obtain foaming material; The foaming material is scraped to the intaglio lace mold through the discharge port of the front-end die of the screw rod, and then heated and dried to form the embossed lace sheet; b) coating the back adhesive layer on the surface of the PET layer, then attaching the embossed lace sheet to the surface of the back adhesive layer, then hot-pressing the transparent PVC to the other side of the embossed lace sheet, and then coating the printing layer and drying to obtain the double-sided bright lace sheet.

2. The double-sided shiny lace sheet according to claim 1, characterized in that, The PET standard weight is (17±5) g / m 2 .

3. The double-sided shiny lace sheet according to claim 1, wherein, The thickness of the embossed lace sheet is 200~520 μm; the thickness of the PET layer is 12 μm, and the thickness of the transparent printing pattern layer is 13~17 μm; The thickness of the double-sided bright lace sheet product is 0.50 mm~0.65 mm, and the width is 0.5 m~1.37 m.

4. A method of producing a double-sided shiny lace sheet according to any one of claims 1 to 3, characterized in that, It comprises the following steps: A) mixing the raw materials for preparing the embossed lace sheet, then placing them in the screw rod of a lace machine for high-temperature extrusion plasticization and foaming to obtain foaming material; The foaming material is scraped to the intaglio lace mold through the discharge port of the front-end die of the screw rod, and then heated and dried to form the embossed lace sheet; B) coating the back adhesive layer on the surface of the PET layer, then attaching the convex lacing sheet on the surface of the back adhesive layer, then coating the printing layer on the other side of the convex lacing sheet, and then hot-pressing the transparent PVC, winding, to obtain the double-sided bright lacing sheet.

5. A method of producing a double-sided shiny lace sheet according to any one of claims 1 to 3, characterized in that, The method comprises the following steps: a) mixing the raw materials for preparing the convex lacing sheet, and then placing the mixture in the screw rod of a lacing machine to perform high-temperature extrusion plasticization foaming, to obtain the foaming material; the foaming material is discharged through the front-end die head of the screw rod, and then scraped into the intaglio lacing die, heated and dried to form, to obtain the convex lacing sheet; b) coating the back adhesive layer on the surface of the PET layer, then attaching the convex lacing sheet on the surface of the back adhesive layer, then hot-pressing the transparent PVC on the other side of the convex lacing sheet, coating the printing layer, drying, and winding, to obtain the double-sided bright lacing sheet.

6. The production method according to claim 4 or 5, characterized by, The primary plasticization temperature of the screw rod of the lacing machine is between 160-170°C; and the secondary plasticization temperature is between 175-185°C. The temperature of the front-end die head of the screw rod is 170±5°C. The hot pressing of the glue roller tension: 5.2±2kgf / cm 2 The winding traction tension: 4±2kgf / cm 2 The temperature of the pressing: 165±5℃, the temperature of the plate roller oil: 185℃±10℃, the temperature of the glue roller water: 10℃±1℃, the temperature of the cooling wheel water: 10℃±1℃, the speed of the main machine: 8±1m / min, the speed of the stripping: 5±1m / min, the speed of the cooling wheel: 5±1m / min, the speed of the traction wheel: 5±1m / min, the speed of the winding: 10±1m / min, the air pressure setting: 4-6KG; In step b), the running speed of the drying forming machine main machine is 13±1 m / min; the winding speed is 13±1 m / min; and the oven temperature is between 150°C±5°C.

7. The double-sided bright lacing sheet according to any one of claims 1-3 is applied as a tablecloth or a table mat.