Wide weather-resistant woven reinforced polypropylene inkjet material as well as preparation process and application thereof

Abstract

The invention belongs to the technical field of advertisement consumables, and discloses a wide weather-resistant woven reinforced polypropylene jet drawing material as well as a preparation process and application thereof. The polypropylene spray-painting material sequentially comprises a bottom surface layer, a cloth base layer and a spray-painting surface layer from bottom to top, the cloth base layer comprises a cloth base, the cloth base comprises ribbon-like filaments, and the ribbon-like filaments comprise polypropylene and anti-aging master batches. The polypropylene spray-painting material has the characteristic of a three-layer structure, and due to the structure and composition characteristics of the cloth base layer, the polypropylene spray-painting material has the advantages of good weather resistance, high mechanical strength, no use of PVC (Polyvinyl Chloride) and good environmental friendliness.

Description

Technical Field

[0001] The invention belongs to the technical field of advertising consumables, and particularly relates to a wide-width weather-resistant woven reinforced polypropylene inkjet material and a preparation process and application thereof. Background Art

[0002] The advertising consumables used in the prior art often have poor mechanical properties or poor weather resistance. Some also require the use of PVC polyvinyl chloride film layers, resulting in poor environmental protection.

[0003] Therefore, there is an urgent need to provide an advertising consumable material that has good weather resistance, high mechanical strength and does not use PVC. Summary of the invention

[0004] The present invention aims to solve at least one of the technical problems existing in the above-mentioned prior art. To this end, the present invention provides a wide-width weather-resistant woven reinforced polypropylene inkjet material and its preparation process and application. The polypropylene inkjet material of the present invention has good weather resistance, high mechanical strength and does not use PVC, and has the advantages of good environmental protection.

[0005] A first aspect of the present invention provides a wide-width weather-resistant woven reinforced polypropylene inkjet printing material.

[0006] Specifically, a wide-width weather-resistant woven reinforced polypropylene inkjet printing material comprises, from bottom to top, a bottom surface layer, a cloth base layer, and an inkjet printing surface layer;

[0007] The fabric base layer comprises a fabric base, the fabric base comprises a flat yarn, and the flat yarn comprises polypropylene and an anti-aging masterbatch.

[0008] Preferably, the warp density of the cloth base is controlled at 36-140 strands / 10 cm, and the weft density is controlled at 34-130 strands / 10 cm.

[0009] Preferably, the width of the cloth base is more than 5 meters, for example, 5-5.5 meters.

[0010] Preferably, the weight of the cloth base is 50-130 g / m 2 , further to 52-130g / m 2 .

[0011] Preferably, the cloth base also includes twisted polypropylene yarns.

[0012] Preferably, the cloth base also includes calcium carbonate masterbatch.

[0013] Preferably, the linear density of the twisted polypropylene yarn is 500D-840D.

[0014] Preferably, the width of the flat yarn is controlled at 0.7-2.7 mm, and the linear density is controlled at 28-128 tex.

[0015] Preferably, the tensile strength of a single yarn in the flat yarn is ≥0.38 N / tex, and the shrinkage rate of a single yarn is below 2%.

[0016] Preferably, the mass fraction of the anti-aging masterbatch in the flat yarn is 3-10%, and the mass fraction of the polypropylene is 90-97%.

[0017] Preferably, the flat yarn also includes 1-3% by mass of calcium carbonate masterbatch.

[0018] Preferably, the anti-aging masterbatch comprises a hindered amine light stabilizer, a UV absorber, an antioxidant, and polypropylene.

[0019] Preferably, the melt index of the polypropylene is 0.1-3.

[0020] Preferably, the anti-aging masterbatch comprises, by mass fraction, 5-15% of hindered amine light stabilizer, 5-10% of ultraviolet absorber, 1-3% of antioxidant, and 72-89% of polypropylene.

[0021] Preferably, the hindered amine light stabilizer is selected from FD944 and 770 produced by BASF and UV3853 and 352 produced by Cytec.

[0022] Preferably, the ultraviolet absorber is selected from BASF 328, 327, and Cytec 2908 and 531.

[0023] Preferably, the antioxidant is selected from antioxidants 1010 and 1076.

[0024] Preferably, the bottom layer comprises polypropylene (PP), LDPE (low-density polyethylene) and masterbatch. The masterbatch can be a masterbatch of any color, for example, a titanium dioxide masterbatch, a gray masterbatch or a black masterbatch.

[0025] Preferably, the composition of the bottom layer, by mass fraction, includes 75-89% polypropylene (PP), 10-20% LDPE (low-density polyethylene) and 1-5% masterbatch.

[0026] Preferably, the surface tension of the spray-painted surface layer is not less than 38 dynes, for example, 40-50 dynes.

[0027] Preferably, the composition of the spray-painted surface layer includes polypropylene (PP), LDPE (low-density polyethylene), anti-aging masterbatch and titanium dioxide masterbatch.

[0028] Preferably, the composition of the spray-painted surface layer, by mass fraction, includes 65-84% polypropylene (PP), 10-20% LDPE (low-density polyethylene), 3-10% anti-aging masterbatch and 1-5% titanium dioxide masterbatch.

[0029] Preferably, the weight of the polypropylene inkjet printing material is 71-205 g / m 2 , more preferably 76-200g / m 2 .

[0030] Preferably, the polypropylene inkjet printing material has a warp tensile strength of not less than 400 Newtons / 5 cm, a weft tensile strength of not less than 300 Newtons / 5 cm, and a tear strength of not less than 90 Newtons.

[0031] Preferably, after the polypropylene inkjet printing material is used in an outdoor environment for one year, the mechanical property retention rate of the polypropylene inkjet printing material reaches more than 80%, meeting the requirements of UV inkjet printing.

[0032] Preferably, the bottom layer comprises polypropylene (PP), LDPE (low-density polyethylene) and masterbatch. The masterbatch can be a masterbatch of any color, for example, a titanium dioxide masterbatch, a gray masterbatch or a black masterbatch.

[0033] The second aspect of the present invention provides a preparation process of a wide-width weather-resistant woven reinforced polypropylene inkjet material.

[0034] Specifically, a preparation process of a wide-width weather-resistant woven reinforced polypropylene inkjet printing material comprises the following steps:

[0035] (1) polypropylene and anti-aging masterbatch are mixed, melt-extruded into a film, and then cut into strips, stretched, shaped, and then rolled to obtain flat yarns, which are then woven to obtain a cloth base;

[0036] (2) Mixing polypropylene, low-density polyethylene and masterbatch, melt-extruding, casting onto one side of the fabric base, cooling and shaping, and obtaining a bottom layer - a fabric base layer;

[0037] (3) polypropylene, low-density polyethylene, anti-aging masterbatch and titanium dioxide masterbatch are mixed, melt-extruded, cast on the side of the bottom layer-cloth base layer close to the cloth base layer, cooled and shaped, and the polypropylene inkjet printing material is obtained.

[0038] Preferably, in step (1), calcium carbonate masterbatch is also added.

[0039] Preferably, in step (1), the preparation process of the anti-aging masterbatch is: mixing a hindered amine light stabilizer, an ultraviolet absorber, an antioxidant, and polypropylene, and extruding and granulating to obtain the anti-aging masterbatch.

[0040] Preferably, in step (1), twisted polypropylene yarn is also added during the weaving process.

[0041] Preferably, in step (2), the weight of the film cast onto one side of the cloth base is 15-45 g / m2 , more preferably, 20-45g / m 2 .

[0042] Preferably, in step (3), the weight of the film cast onto the bottom layer-cloth base layer close to the cloth base layer is 20-55 g / m 2 , more preferably, 25-50g / m 2 .

[0043] Preferably, in step (3), after cooling and shaping, the process further includes a corona or plasma treatment and a winding process.

[0044] Preferably, step (2) can be omitted, and step (3) can be directly performed on the surface of the cloth base prepared in step (1). That is, the obtained product may not contain a bottom surface layer.

[0045] A third aspect of the present invention provides an application of a wide-width weather-resistant woven reinforced polypropylene inkjet printing material.

[0046] A billboard comprises the wide-width weather-resistant woven reinforced polypropylene spray-painted material.

[0047] The materials used for advertising printing on the market are mainly based on polyester textiles or polypropylene textiles, and polyvinyl chloride products with composite PVC. The main component is polyvinyl chloride, and some other auxiliary materials are added to enhance its heat resistance and ductility. It has good adhesion and is easy to spray. Therefore, it is often used for surface spraying. Moreover, since this material is cheap, it is widely used. However, its disadvantage is that PVC is difficult to separate from polyester fabrics and polypropylene fabric substrates, so it cannot be recycled, resulting in poor environmental protection; and when PVC decomposes, it will produce toxic and harmful gases such as HCl, which will cause air pollution.

[0048] In recent years, there has also been a practice of using polypropylene mesh fabrics as the base material and coating them with various non-PVC materials for waterproofing and ink-absorbing coatings. However, due to the width limitations of the coating equipment, the product width cannot be very wide and cannot be used for large outdoor billboards.

[0049] The invention uses PP as the main material, adds a proper amount of anti-aging masterbatch, and uses a single-screw wire drawing machine to prepare flat wire with low shrinkage and high strength through the processes of casting, cooling, slitting, stretching, shaping, and winding.

[0050] Use PP flat yarn, or a combination of PP flat yarn and high-strength twisted polypropylene yarn, and weave a 5-meter wide, high-flatness, low-shrinkage cloth base through a flat loom (water loom, rapier loom or shuttle loom).

[0051] With PP and LDPE as the main materials, add appropriate amount of anti-aging masterbatch and color masterbatch, use a single-screw compounding machine to coat and compound on the woven cloth base, and perform surface treatment on the surface layer to make a wide-width weather-resistant woven reinforced polypropylene inkjet material.

[0052] The wide-width weather-resistant woven reinforced polypropylene inkjet printing material prepared by the present invention has the characteristics of a width of more than 5 meters (can also be less than 5 meters, for example, 1.8-5 meters), weather resistance and durability, high flatness, light weight and high strength, high stiffness, low heat shrinkage rate, and high processing temperature resistance. It can be used outdoors for more than one year and can be suitable for large digital inkjet printers such as UV ink.

[0053] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0054] The polypropylene inkjet printing material of the present invention has a three-layer structure. Due to the structural and compositional characteristics of the cloth base layer, the polypropylene inkjet printing material has good weather resistance, high mechanical strength, and does not use PVC, thus having the advantages of good environmental protection. BRIEF DESCRIPTION OF THE DRAWINGS

[0055] Figure 1 This is a schematic diagram of the structure of the polypropylene inkjet printing material of Example 1 of the present invention;

[0056] Figure 2 This is a schematic diagram of the structure of the polypropylene inkjet material of Example 8 of the present invention;

[0057] Figure 3 This is a schematic diagram of the structure of the warp and weft threads in the cloth base in Example 1 of the present invention;

[0058] Figure 4 This is a schematic diagram of the structure of the warp and weft threads in the cloth base of Example 8 of the present invention. DETAILED DESCRIPTION

[0059] In order to make the technical scheme of the present invention more clearly understood by those skilled in the art, the following embodiments are listed for illustration. It should be pointed out that the following embodiments do not limit the protection scope of the present invention.

[0060] Unless otherwise specified, the raw materials, reagents or devices used in the following examples can be obtained from conventional commercial sources or by existing known methods.

[0061] The preparation method of the wide-width weather-resistant woven reinforced polypropylene inkjet material includes a granulation process, a wire drawing process, a weaving process, and a compounding process, which are specifically as follows:

[0062] (1) Anti-aging masterbatch process:

[0063] Raw material formula: (70%-89%) PP (raw material brand L5E89, T03) + (5%-15%) hindered amine light stabilizer (944, 3529) + (5%-10%) ultraviolet absorber (328, 531) + antioxidant with a mass fraction of 1%-3% (such as 1010, 1076);

[0064] The raw materials are put into the twin-screw granulator for extrusion granulation. The temperature distribution of the twin-screw granulator is as follows:

[0065] Barrel 1 170℃, barrel 2 180℃, barrel 3 200℃, barrel 4 210℃, barrel 5 210℃, filter area 210℃, connector 210℃, die head 200℃.

[0066] (2) Wire drawing process:

[0067] Raw material formula: low melt index PP (L5E89, T03) 90%-97% + 3%-10% anti-aging masterbatch.

[0068] The raw materials are put into the single screw extruder for mixing. The temperature distribution of the single screw extruder is as follows:

[0069] Barrel 1 180℃, Barrel 2 230℃, Barrel 3 250℃, Barrel 4 280℃, Barrel 5 290℃, Barrel 6 290℃, Filter area 290℃, Connector 290℃, Die head × 7 290℃.

[0070] Warp production process: extruding a flat film from an extruder under the above process conditions, cooling the flat film at 20-40°C water temperature and then cutting it into flat yarns, hot stretching on a stretching plate at 90-140°C, the stretching multiple is 5-7 times, and shaping at 110-135°C to obtain a flat yarn with a width of 0.7-2.7mm, a linear density of 28-128±3tex, a tensile strength ≥0.38N / tex, and an elongation of 13-30%;

[0071] (3) Weaving process:

[0072] Using a flat loom (water loom, rapier loom or shuttle loom), using flat yarn, or a combination of flat yarn and high-strength twisted polypropylene yarn (linear density of 500D-840D), weaving into a polypropylene cloth base with a width greater than 5 meters and a cloth base weight of 60-130g / m 2 .

[0073] (4) Composite process:

[0074] The rolled cloth base is placed on a plastic coating machine for single-sided casting coating, cooled and shaped to obtain a polypropylene inkjet printing material.

[0075] The raw material formula of the spray-painted surface coating is: (PP+LDPE) 85%-94%+3%-10% anti-aging masterbatch+1%-5% titanium dioxide masterbatch.

[0076] The above raw materials were put into a single screw extruder for mixing. The temperature distribution of the single screw extruder was as follows:

[0077] Barrel 1 180℃, Barrel 2 230℃, Barrel 3 250℃, Barrel 4 275℃, Barrel 5 275℃, Barrel 6 275℃, Barrel 7 275℃, Filter area 275℃, Connector 275℃, Die head × 13 280℃.

[0078] Coating cast film weight: 20-50g / m2.

[0079] The raw material formula of the bottom layer coating is: (PP+LDPE) 85%-94%+1%-5% titanium dioxide masterbatch.

[0080] The above raw materials were put into a single screw extruder for mixing. The temperature distribution of the single screw extruder was as follows:

[0081] Barrel 1 180℃, Barrel 2 230℃, Barrel 3 250℃, Barrel 4 275℃, Barrel 5 275℃, Barrel 6 275℃, Barrel 7 275℃, Filter area 275℃, Connector 275℃, Die head × 13 280℃.

[0082] Coating cast film weight: 20-45g / m 2 .

[0083] Example 1

[0084] A wide-width weather-resistant woven reinforced polypropylene inkjet printing material comprises, from bottom to top, a bottom surface layer, a cloth base layer and an inkjet printing surface layer.

[0085] The fabric base layer comprises a fabric base, the fabric base comprises flat yarns, and the flat yarns comprise polypropylene, anti-aging masterbatch and calcium carbonate masterbatch.

[0086] The width of the flat yarn is controlled at 1.5 mm and the line density is controlled at 63tex.

[0087] Figure 1 1 is a schematic structural diagram of a polypropylene inkjet printing material according to Example 1 of the present invention, wherein 100 represents a bottom surface layer, 200 represents a fabric base layer, and 300 represents an inkjet printing surface layer.

[0088] Figure 3 This is a schematic diagram of the structure of the warp and weft threads in the cloth base of Example 1 of the present invention; wherein 1 represents the weft thread and 2 represents the warp thread.

[0089] A preparation process of a wide-width weather-resistant woven reinforced polypropylene inkjet printing material comprises the following steps:

[0090] (1) Anti-aging masterbatch process:

[0091] Raw material formula: (80%) PP (L5E89) + (10%) hindered amine light stabilizer (944) + (7%) ultraviolet absorber (328) + 3% by mass of antioxidant (1010);

[0092] The raw materials are put into the twin-screw granulator for extrusion granulation. The temperature distribution of the twin-screw granulator is as follows:

[0093] Barrel 1 170℃, barrel 2 180℃, barrel 3 200℃, barrel 4 210℃, barrel 5 210℃, filter area 210℃, connector 210℃, die head 200℃.

[0094] (2) Wire drawing process:

[0095] Raw material formula: low melt index PP (L5E89) 93% + 4% anti-aging masterbatch + 3% calcium carbonate masterbatch.

[0096] The raw materials are put into the single screw extruder for mixing. The temperature distribution of the single screw extruder is as follows:

[0097] Barrel 1 180℃, Barrel 2 230℃, Barrel 3 250℃, Barrel 4 280℃, Barrel 5 290℃, Barrel 6 290℃, Filter area 290℃, Connector 290℃, Die head × 7 290℃.

[0098] Warp yarn production process: extruding a flat film from an extruder under the above process conditions, cooling the flat film at 30°C and then cutting it into flat yarns, heat stretching it on a 100°C stretching plate with a stretching multiple of 6 times, and shaping it at 110°C to obtain a flat yarn with a width of 1.5 mm and a linear density of 63 tex;

[0099] (3) Weaving process:

[0100] Using a flat loom (water loom), flat yarn is used to weave a polypropylene cloth base with a width of 5.2 meters and a cloth base weight of 81g / m 2 The warp density of the cloth base is controlled at 60 threads / 10 cm, and the weft density is controlled at 60 threads / 10 cm.

[0101] (4) Composite process:

[0102] The rolled cloth base is placed on a plastic coating machine for single-sided casting coating, cooled and shaped, and the spray-painted surface layer is subjected to corona treatment to obtain a polypropylene spray-painted material;

[0103] The raw material formula of the spray-painted surface coating is: (70% PP + 15% LDPE) 85% + 3% anti-aging masterbatch + 12% titanium dioxide masterbatch.

[0104] The above raw materials were put into a single screw extruder for mixing. The temperature distribution of the single screw extruder was as follows:

[0105] Barrel 1 180℃, Barrel 2 230℃, Barrel 3 250℃, Barrel 4 275℃, Barrel 5 275℃, Barrel 6 275℃, Barrel 7 275℃, Filter area 275℃, Connector 275℃, Die head × 13 280℃.

[0106] Coating cast film weight: 32g / m 2 .

[0107] The raw material formula of the bottom layer coating is: (80% PP + 13% LDPE) 93% + 7% black masterbatch.

[0108] The above raw materials were put into a single screw extruder for mixing. The temperature distribution of the single screw extruder was as follows:

[0109] Barrel 1 180℃, Barrel 2 230℃, Barrel 3 250℃, Barrel 4 275℃, Barrel 5 275℃, Barrel 6 275℃, Barrel 7 275℃, Filter area 275℃, Connector 275℃, Die head × 13 280℃.

[0110] Coating cast film weight: 27g / m 2 .

[0111] Example 2

[0112] A preparation process of a wide-width weather-resistant woven reinforced polypropylene inkjet printing material comprises the following steps:

[0113] (1) Anti-aging masterbatch process:

[0114] Raw material formula: (80%) PP (L5E89) + (10%) hindered amine light stabilizer (944) + (7%) ultraviolet absorber (328) + 3% by mass of antioxidant (1010);

[0115] The raw materials are put into the twin-screw granulator for extrusion granulation. The temperature distribution of the twin-screw granulator is as follows:

[0116] Barrel 1 170℃, barrel 2 180℃, barrel 3 200℃, barrel 4 210℃, barrel 5 210℃, filter area 210℃, connector 210℃, die head 200℃.

[0117] (2) Wire drawing process:

[0118] Raw material formula: low melt index PP (L5E89) 93% + 4% anti-aging masterbatch + 3% calcium carbonate masterbatch.

[0119] The raw materials are put into the single screw extruder for mixing. The temperature distribution of the single screw extruder is as follows:

[0120] Barrel 1 180℃, Barrel 2 230℃, Barrel 3 250℃, Barrel 4 280℃, Barrel 5 290℃, Barrel 6 290℃, Filter area 290℃, Connector 290℃, Die head × 7 290℃.

[0121] Warp yarn production process: extruding a flat film from an extruder under the above process conditions, cooling the flat film at 30°C and then cutting it into flat yarns, heat stretching it on a 100°C stretching plate with a stretching multiple of 5 times, and shaping it at 120°C to obtain a flat yarn with a width of 0.9 mm and a linear density of 36 tex;

[0122] (3) Weaving process:

[0123] Using a flat loom (water loom), flat yarn is used to weave a polypropylene cloth base with a width of 5.2 meters and a cloth base weight of 77g / m 2 The warp density of the cloth base is controlled at 110 threads / 10 cm, and the weft density is controlled at 110 threads / 10 cm.

[0124] (4) Composite process:

[0125] The rolled cloth base is placed on a plastic coating machine for single-sided casting coating, cooled and shaped, and the spray-painted surface layer is subjected to corona treatment to obtain a polypropylene spray-painted material;

[0126] The raw material formula of the spray-painted surface coating is: (70% PP + 15% LDPE) 85% + 3% anti-aging masterbatch + 12% titanium dioxide masterbatch.

[0127] The above raw materials were put into a single screw extruder for mixing. The temperature distribution of the single screw extruder was as follows:

[0128] Barrel 1 180℃, Barrel 2 230℃, Barrel 3 250℃, Barrel 4 275℃, Barrel 5 275℃, Barrel 6 275℃, Barrel 7 275℃, Filter area 275℃, Connector 275℃, Die head × 13 280℃.

[0129] Coating cast film weight: 34g / m 2 .

[0130] The raw material formula of the bottom layer coating is: (80% PP + 13% LDPE) 93% + 7% carbon black masterbatch.

[0131] The above raw materials were put into a single screw extruder for mixing. The temperature distribution of the single screw extruder was as follows:

[0132] Barrel 1 180℃, Barrel 2 230℃, Barrel 3 250℃, Barrel 4 275℃, Barrel 5 275℃, Barrel 6 275℃, Barrel 7 275℃, Filter area 275℃, Connector 275℃, Die head × 13 280℃.

[0133] Coating cast film weight: 29g / m 2 .

[0134] Example 3

[0135] A preparation process of a wide-width weather-resistant woven reinforced polypropylene inkjet printing material comprises the following steps:

[0136] (1) Anti-aging masterbatch process:

[0137] Raw material formula: (80%) PP (L5E89) + (10%) hindered amine light stabilizer (944) + (7%) ultraviolet absorber (328) + 3% by mass of antioxidant (1010);

[0138] The raw materials are put into the twin-screw granulator for extrusion granulation. The temperature distribution of the twin-screw granulator is as follows:

[0139] Barrel 1 170℃, barrel 2 180℃, barrel 3 200℃, barrel 4 210℃, barrel 5 210℃, filter area 210℃, connector 210℃, die head 200℃.

[0140] (2) Wire drawing process:

[0141] Raw material formula: low melt index PP (L5E89) 93% + 4% anti-aging masterbatch + 3% calcium carbonate masterbatch.

[0142] The raw materials are put into the single screw extruder for mixing. The temperature distribution of the single screw extruder is as follows:

[0143] Barrel 1 180℃, Barrel 2 230℃, Barrel 3 250℃, Barrel 4 280℃, Barrel 5 290℃, Barrel 6 290℃, Filter area 290℃, Connector 290℃, Die head × 7 290℃.

[0144] Warp yarn production process: extruding a flat film from an extruder under the above process conditions, cooling the flat film at 30°C and then cutting it into flat yarns, heat-stretching it on a 100°C stretching plate with a stretching multiple of 5 times, and shaping it at 105°C to obtain a flat yarn with a width of 1.0 mm and a linear density of 53 tex;

[0145] (3) Weaving process:

[0146] Using a flat loom (water loom), flat yarn is used to weave a polypropylene cloth base with a width of 5.2 meters and a cloth base weight of 103g / m2 The warp density of the cloth base is controlled at 100 threads / 10 cm, and the weft density is controlled at 90 threads / 10 cm.

[0147] (4) Composite process:

[0148] The rolled cloth base is placed on a plastic coating machine for single-sided casting coating, cooled and shaped, and the spray-painted surface layer is subjected to corona treatment to obtain a polypropylene spray-painted material;

[0149] The raw material formula of the spray-painted surface coating is: (70% PP + 15% LDPE) 85% + 3% anti-aging masterbatch + 12% titanium dioxide masterbatch.

[0150] The above raw materials were put into a single screw extruder for mixing. The temperature distribution of the single screw extruder was as follows:

[0151] Barrel 1 180℃, Barrel 2 230℃, Barrel 3 250℃, Barrel 4 275℃, Barrel 5 275℃, Barrel 6 275℃, Barrel 7 275℃, Filter area 275℃, Connector 275℃, Die head × 13 280℃.

[0152] Coating cast film weight: 45g / m 2 .

[0153] The raw material formula of the bottom layer coating is: (80% PP + 13% LDPE) 93% + 7% black masterbatch.

[0154] The above raw materials were put into a single screw extruder for mixing. The temperature distribution of the single screw extruder was as follows:

[0155] Barrel 1 180℃, Barrel 2 230℃, Barrel 3 250℃, Barrel 4 275℃, Barrel 5 275℃, Barrel 6 275℃, Barrel 7 275℃, Filter area 275℃, Connector 275℃, Die head × 13 280℃.

[0156] Coating cast film weight: 40g / m 2 .

[0157] Example 4

[0158] A preparation process of a wide-width weather-resistant woven reinforced polypropylene inkjet printing material comprises the following steps:

[0159] (1) Anti-aging masterbatch process:

[0160] Raw material formula: (80%) PP (L5E89) + (11%) hindered amine light stabilizer (944) + (6%) ultraviolet absorber (328) + 3% by mass of antioxidant (1010);

[0161] The raw materials are put into the twin-screw granulator for extrusion granulation. The temperature distribution of the twin-screw granulator is as follows:

[0162] Barrel 1 170℃, barrel 2 180℃, barrel 3 200℃, barrel 4 210℃, barrel 5 210℃, filter area 210℃, connector 210℃, die head 200℃.

[0163] (2) Wire drawing process:

[0164] Raw material formula: low melt index PP (L5E89) 93% + 4% anti-aging masterbatch + 3% calcium carbonate masterbatch.

[0165] The raw materials are put into the single screw extruder for mixing. The temperature distribution of the single screw extruder is as follows:

[0166] Barrel 1 180℃, Barrel 2 230℃, Barrel 3 250℃, Barrel 4 280℃, Barrel 5 290℃, Barrel 6 290℃, Filter area 290℃, Connector 290℃, Die head × 7 290℃.

[0167] Warp yarn production process: extruding a flat film from an extruder under the above process conditions, cooling the flat film at 30°C and then cutting it into flat yarns, hot stretching it on a 100°C stretching plate with a stretching multiple of 5 times, and shaping it at 105°C to obtain a flat yarn with a width of 1.0 mm and a linear density of 48 tex;

[0168] (3) Weaving process:

[0169] Using a flat loom (water loom), flat yarn is used to weave a polypropylene cloth base with a width of 5.2 meters and a cloth base weight of 93g / m 2 The warp density of the cloth base is controlled at 100 threads / 10 cm, and the weft density is controlled at 90 threads / 10 cm.

[0170] (4) Composite process:

[0171] The rolled cloth base is placed on a plastic coating machine for single-sided casting coating, cooled and shaped, and the spray-painted surface layer is subjected to corona treatment to obtain a polypropylene spray-painted material;

[0172] The raw material formula of the spray-painted surface coating is: (70% PP + 15% LDPE) 85% + 3% anti-aging masterbatch + 12% titanium dioxide masterbatch.

[0173] The above raw materials were put into a single screw extruder for mixing. The temperature distribution of the single screw extruder was as follows:

[0174] Barrel 1 180℃, Barrel 2 230℃, Barrel 3 250℃, Barrel 4 275℃, Barrel 5 275℃, Barrel 6 275℃, Barrel 7 275℃, Filter area 275℃, Connector 275℃, Die head × 13 280℃.

[0175] Coating cast film weight: 40g / m 2 .

[0176] The raw material formula of the bottom layer coating is: (80% PP + 13% LDPE) 93% + 7% black masterbatch.

[0177] The above raw materials were put into a single screw extruder for mixing. The temperature distribution of the single screw extruder was as follows:

[0178] Barrel 1 180℃, Barrel 2 230℃, Barrel 3 250℃, Barrel 4 275℃, Barrel 5 275℃, Barrel 6 275℃, Barrel 7 275℃, Filter area 275℃, Connector 275℃, Die head × 13 280℃.

[0179] Coating cast film weight: 35g / m 2 .

[0180] Example 5

[0181] A preparation process of a wide-width weather-resistant woven reinforced polypropylene inkjet printing material comprises the following steps:

[0182] (1) Anti-aging masterbatch process:

[0183] Raw material formula: (80%) PP (L5E89) + (10%) hindered amine light stabilizer (944) + (7%) ultraviolet absorber (328) + 3% by mass of antioxidant (1010);

[0184] The raw materials are put into the twin-screw granulator for extrusion granulation. The temperature distribution of the twin-screw granulator is as follows:

[0185] Barrel 1 170℃, barrel 2 180℃, barrel 3 200℃, barrel 4 210℃, barrel 5 210℃, filter area 210℃, connector 210℃, die head 200℃.

[0186] (2) Wire drawing process:

[0187] Raw material formula: low melt index PP (L5E89) 93% + 4% anti-aging masterbatch + 3% calcium carbonate masterbatch.

[0188] The raw materials are put into the single screw extruder for mixing. The temperature distribution of the single screw extruder is as follows:

[0189] Barrel 1 180℃, Barrel 2 230℃, Barrel 3 250℃, Barrel 4 280℃, Barrel 5 290℃, Barrel 6 290℃, Filter area 290℃, Connector 290℃, Die head × 7 290℃.

[0190] Warp yarn production process: extruding a flat film from an extruder under the above process conditions, cooling the flat film at 30°C and then cutting it into flat yarns, hot stretching it on a 100°C stretching plate with a stretching multiple of 5 times, and shaping it at 105°C to obtain a flat yarn with a width of 0.9 mm and a linear density of 36 tex;

[0191] (3) Weaving process:

[0192] Using a flat loom (water loom), flat yarn is used as the warp yarn, and the weft yarn is 840D high-strength twisted polypropylene yarn, which is woven into a polypropylene cloth base with a width of 5.2 meters and a cloth base weight of 92g / m 2 The warp density of the cloth base is controlled at 110 threads / 10 cm, and the weft density is controlled at 54 threads / 10 cm.

[0193] (4) Composite process:

[0194] The rolled cloth base is placed on a plastic coating machine for single-sided casting coating, cooled and shaped, and the spray-painted surface layer is subjected to corona treatment to obtain a polypropylene spray-painted material;

[0195] The raw material formula of the spray-painted surface coating is: (70% PP + 15% LDPE) 85% + 3% anti-aging masterbatch + 12% titanium dioxide masterbatch.

[0196] The above raw materials were put into a single screw extruder for mixing. The temperature distribution of the single screw extruder was as follows:

[0197] Barrel 1 180℃, Barrel 2 230℃, Barrel 3 250℃, Barrel 4 275℃, Barrel 5 275℃, Barrel 6 275℃, Barrel 7 275℃, Filter area 275℃, Connector 275℃, Die head × 13 280℃.

[0198] Coating cast film weight: 40g / m 2 .

[0199] The raw material formula of the bottom layer coating is: (80% PP + 13% LDPE) 93% + 7% black masterbatch.

[0200] The above raw materials were put into a single screw extruder for mixing. The temperature distribution of the single screw extruder was as follows:

[0201] Barrel 1 180℃, Barrel 2 230℃, Barrel 3 250℃, Barrel 4 275℃, Barrel 5 275℃, Barrel 6 275℃, Barrel 7 275℃, Filter area 275℃, Connector 275℃, Die head × 13 280℃.

[0202] Coating cast film weight: 35g / m 2 .

[0203] Example 6

[0204] A preparation process of a wide-width weather-resistant woven reinforced polypropylene inkjet printing material comprises the following steps:

[0205] (1) Anti-aging masterbatch process:

[0206] Raw material formula: (80%) PP (L5E89) + (10%) hindered amine light stabilizer (944) + (7%) ultraviolet absorber (328) + 3% by mass of antioxidant (1010);

[0207] The raw materials are put into the twin-screw granulator for extrusion granulation. The temperature distribution of the twin-screw granulator is as follows:

[0208] Barrel 1 170℃, barrel 2 180℃, barrel 3 200℃, barrel 4 210℃, barrel 5 210℃, filter area 210℃, connector 210℃, die head 200℃.

[0209] (2) Wire drawing process:

[0210] Raw material formula: low melt index PP (L5E89) 93% + 4% anti-aging masterbatch + 3% calcium carbonate masterbatch.

[0211] The raw materials are put into the single screw extruder for mixing. The temperature distribution of the single screw extruder is as follows:

[0212] Barrel 1 180℃, Barrel 2 230℃, Barrel 3 250℃, Barrel 4 280℃, Barrel 5 290℃, Barrel 6 290℃, Filter area 290℃, Connector 290℃, Die head × 7 290℃.

[0213] Warp yarn production process: extruding a flat film from an extruder under the above process conditions, cooling the flat film at 30°C and then cutting it into flat yarns, hot stretching it on a 100°C stretching plate with a stretching multiple of 5 times, and shaping it at 105°C to obtain a flat yarn with a width of 0.9 mm and a linear density of 36 tex;

[0214] (3) Weaving process:

[0215] Using a flat loom (water loom), flat yarn is used as the warp yarn, and the weft yarn is made of 600D high-strength twisted polypropylene yarn to weave a polypropylene cloth base with a width of 5.2 meters. The cloth base weight is 77g / m 2 The warp density of the cloth base is controlled at 110 threads / 10 cm, and the weft density is controlled at 54 threads / 10 cm.

[0216] (4) Composite process:

[0217] The rolled cloth base is placed on a plastic coating machine for single-sided casting coating, cooled and shaped, and the spray-painted surface layer is subjected to corona treatment to obtain a polypropylene spray-painted material;

[0218] The raw material formula of the spray-painted surface coating is: (70% PP + 15% LDPE) 85% + 3% anti-aging masterbatch + 12% titanium dioxide masterbatch.

[0219] The above raw materials were put into a single screw extruder for mixing. The temperature distribution of the single screw extruder was as follows:

[0220] Barrel 1 180℃, Barrel 2 230℃, Barrel 3 250℃, Barrel 4 275℃, Barrel 5 275℃, Barrel 6 275℃, Barrel 7 275℃, Filter area 275℃, Connector 275℃, Die head × 13 280℃.

[0221] Coating cast film weight: 35g / m 2 .

[0222] The raw material formula of the bottom layer coating is: (80% PP + 13% LDPE) 93% + 7% black masterbatch.

[0223] The above raw materials were put into a single screw extruder for mixing. The temperature distribution of the single screw extruder was as follows:

[0224] Barrel 1 180℃, Barrel 2 230℃, Barrel 3 250℃, Barrel 4 275℃, Barrel 5 275℃, Barrel 6 275℃, Barrel 7 275℃, Filter area 275℃, Connector 275℃, Die head × 13 280℃.

[0225] Coating cast film weight: 30g / m 2 .

[0226] Example 7

[0227] A preparation process of a wide-width weather-resistant woven reinforced polypropylene inkjet printing material comprises the following steps:

[0228] (1) Anti-aging masterbatch process:

[0229] Raw material formula: (80%) PP (L5E89) + (10%) hindered amine light stabilizer (944) + (7%) ultraviolet absorber (328) + 3% by mass of antioxidant (1010);

[0230] The raw materials are put into the twin-screw granulator for extrusion granulation. The temperature distribution of the twin-screw granulator is as follows:

[0231] Barrel 1 170℃, barrel 2 180℃, barrel 3 200℃, barrel 4 210℃, barrel 5 210℃, filter area 210℃, connector 210℃, die head 200℃.

[0232] (2) Wire drawing process:

[0233] Raw material formula: low melt index PP (L5E89) 93% + 4% anti-aging masterbatch + 3% calcium carbonate masterbatch.

[0234] The raw materials are put into the single screw extruder for mixing. The temperature distribution of the single screw extruder is as follows:

[0235] Barrel 1 180℃, Barrel 2 230℃, Barrel 3 250℃, Barrel 4 280℃, Barrel 5 290℃, Barrel 6 290℃, Filter area 290℃, Connector 290℃, Die head × 7 290℃.

[0236] Warp yarn production process: extruding a flat film from an extruder under the above process conditions, cooling the flat film at 30°C and then cutting it into flat yarns, hot stretching it on a 100°C stretching plate with a stretching multiple of 5 times, and shaping it at 105°C to obtain a flat yarn with a width of 0.9 mm and a linear density of 36 tex;

[0237] (3) Weaving process:

[0238] Using a flat loom (water loom), flat yarn is used as the warp yarn, and the weft yarn is made of 600D high-strength twisted polypropylene yarn to weave a polypropylene cloth base with a width of 5.2 meters. The cloth base weight is 77g / m 2 The warp density of the cloth base is controlled at 110 threads / 10 cm, and the weft density is controlled at 54 threads / 10 cm.

[0239] (4) Composite process:

[0240] The rolled cloth base is placed on a plastic coating machine for single-sided casting coating, cooled and shaped, and the spray-painted surface layer is subjected to corona treatment to obtain a polypropylene spray-painted material;

[0241] The raw material formula of the spray-painted surface coating is: (68% PP + 15% LDPE) 83% + 5% anti-aging masterbatch + 12% titanium dioxide masterbatch.

[0242] The above raw materials were put into a single screw extruder for mixing. The temperature distribution of the single screw extruder was as follows:

[0243] Barrel 1 180℃, Barrel 2 230℃, Barrel 3 250℃, Barrel 4 275℃, Barrel 5 275℃, Barrel 6 275℃, Barrel 7 275℃, Filter area 275℃, Connector 275℃, Die head × 13 280℃.

[0244] Coating cast film weight: 35g / m 2 .

[0245] Bottom layer coating raw material formula: (PP+LDPE) 93%+7% black masterbatch.

[0246] The above raw materials were put into a single screw extruder for mixing. The temperature distribution of the single screw extruder was as follows:

[0247] Barrel 1 180℃, Barrel 2 230℃, Barrel 3 250℃, Barrel 4 275℃, Barrel 5 275℃, Barrel 6 275℃, Barrel 7 275℃, Filter area 275℃, Connector 275℃, Die head × 13 280℃.

[0248] Coating cast film weight: 30g / m 2 .

[0249] Example 8

[0250] A preparation process of a wide-width weather-resistant woven reinforced polypropylene inkjet printing material comprises the following steps:

[0251] (1) Anti-aging masterbatch process:

[0252] Raw material formula: (80%) PP (L5E89) + (10%) hindered amine light stabilizer (944) + (7%) ultraviolet absorber (328) + 3% by mass of antioxidant (1010);

[0253] The raw materials are put into the twin-screw granulator for extrusion granulation. The temperature distribution of the twin-screw granulator is as follows:

[0254] Barrel 1 170℃, barrel 2 180℃, barrel 3 200℃, barrel 4 210℃, barrel 5 210℃, filter area 210℃, connector 210℃, die head 200℃.

[0255] (2) Wire drawing process:

[0256] Raw material formula: low melt index PP (L5E89) 93% + 4% anti-aging masterbatch + 3% calcium carbonate masterbatch.

[0257] The raw materials are put into the single screw extruder for mixing. The temperature distribution of the single screw extruder is as follows:

[0258] Barrel 1 180℃, Barrel 2 230℃, Barrel 3 250℃, Barrel 4 280℃, Barrel 5 290℃, Barrel 6 290℃, Filter area 290℃, Connector 290℃, Die head × 7 290℃.

[0259] Warp yarn production process: extruding a flat film from an extruder under the above process conditions, cooling the flat film at 30°C and then cutting it into flat yarns, heat stretching it on a 100°C stretching plate with a stretching multiple of 5 times, and shaping it at 105°C to obtain a flat yarn with a width of 1.0 mm and a linear density of 27 tex;

[0260] (3) Weaving process:

[0261] Using a flat loom (water loom), flat yarn is used to weave a polypropylene cloth base with a width of 5.2 meters and a cloth base weight of 52g / m 2 The warp density of the cloth base is controlled at 100 threads / 10 cm, and the weft density is controlled at 90 threads / 10 cm.

[0262] (4) Composite process:

[0263] The rolled cloth base is placed on a plastic coating machine for single-sided casting coating, cooled and shaped, and the spray-painted surface layer is subjected to corona treatment to obtain a polypropylene spray-painted material;

[0264] The raw material formula of the spray-painted surface coating is: (70% PP + 15% LDPE) 85% + 3% anti-aging masterbatch + 12% titanium dioxide masterbatch.

[0265] The above raw materials were put into a single screw extruder for mixing. The temperature distribution of the single screw extruder was as follows:

[0266] Barrel 1 180℃, Barrel 2 230℃, Barrel 3 250℃, Barrel 4 275℃, Barrel 5 275℃, Barrel 6 275℃, Barrel 7 275℃, Filter area 275℃, Connector 275℃, Die head × 13 280℃.

[0267] Coating cast film weight: 24g / m 2 .

[0268] Figure 2 This is a schematic diagram of the structure of the polypropylene inkjet printing material of Example 8 of the present invention. Figure 2 Schematic diagram of the structure of the polypropylene inkjet material of Example 8 of the present invention, wherein 200' represents the cloth base layer and 300' represents the inkjet surface layer.

[0269] Figure 4 Schematic diagram of the structure of the warp and weft in the cloth base of Example 8 of the present invention, wherein 1' represents the weft and 2' represents the warp.

[0270] Example 9

[0271] A preparation process of a wide-width weather-resistant woven reinforced polypropylene inkjet printing material comprises the following steps:

[0272] (1) Anti-aging masterbatch process:

[0273] Raw material formula: (80%) PP (L5E89) + (10%) hindered amine light stabilizer (944) + (7%) ultraviolet absorber (328) + 3% by mass of antioxidant (1010);

[0274] The raw materials are put into the twin-screw granulator for extrusion granulation. The temperature distribution of the twin-screw granulator is as follows:

[0275] Barrel 1 170℃, barrel 2 180℃, barrel 3 200℃, barrel 4 210℃, barrel 5 210℃, filter area 210℃, connector 210℃, die head 200℃.

[0276] (2) Wire drawing process:

[0277] Raw material formula: low melt index PP (L5E89) 93% + 4% anti-aging masterbatch + 3% calcium carbonate masterbatch.

[0278] The raw materials are put into the single screw extruder for mixing. The temperature distribution of the single screw extruder is as follows:

[0279] Barrel 1 180℃, Barrel 2 230℃, Barrel 3 250℃, Barrel 4 280℃, Barrel 5 290℃, Barrel 6 290℃, Filter area 290℃, Connector 290℃, Die head × 7 290℃.

[0280] Warp yarn production process: extruding a flat film from an extruder under the above process conditions, cooling the flat film at 30°C and then cutting it into flat yarns, heat stretching it on a 100°C stretching plate with a stretching multiple of 5 times, and shaping it at 105°C to obtain a flat yarn with a width of 1.0 mm and a linear density of 27 tex;

[0281] (3) Weaving process:

[0282] Using a flat loom (water loom), flat yarn is used as the warp yarn, and 500D high-strength twisted polypropylene yarn is used as the weft yarn to weave a polypropylene cloth base with a width of 5.2 meters. The cloth base weight is 52g / m 2 The warp density of the cloth base is controlled at 100 threads / 10 cm, and the weft density is controlled at 43 threads / 10 cm.

[0283] (4) Composite process:

[0284] The rolled cloth base is placed on a plastic coating machine for single-sided casting coating, cooled and shaped, and the spray-painted surface layer is subjected to corona treatment to obtain a polypropylene spray-painted material;

[0285] The raw material formula of the spray-painted surface coating is: (70% PP + 15% LDPE) 85% + 3% anti-aging masterbatch + 12% titanium dioxide masterbatch.

[0286] The above raw materials were put into a single screw extruder for mixing. The temperature distribution of the single screw extruder was as follows:

[0287] Barrel 1 180℃, Barrel 2 230℃, Barrel 3 250℃, Barrel 4 275℃, Barrel 5 275℃, Barrel 6 275℃, Barrel 7 275℃, Filter area 275℃, Connector 275℃, Die head × 13 280℃.

[0288] Coating cast film weight: 24g / m 2 .

[0289] Comparative Example 1

[0290] Compared with Example 1, the only difference of Comparative Example 1 is that no anti-aging masterbatch is added to the raw material formula of the inkjet surface coating, and the rest of the process is the same as Example 1.

[0291] Comparative Example 2

[0292] Compared with Example 5, the difference of Comparative Example 2 is that no anti-aging masterbatch is added to the raw material formula of the inkjet surface coating, and the rest of the process is the same as Example 5.

[0293] Comparative Example 3

[0294] Compared with Example 6, the difference of Comparative Example 3 is that the weight of the spray-painted surface coating cast film is 25 g / m 2 The weight of the bottom layer cast film is 23g / m 2 , the rest of the process is the same as Example 6.

[0295] Product effect testing

[0296] The polypropylene inkjet printing materials prepared in the above examples and comparative examples were tested for mechanical properties and aging resistance according to the following standards. The results are shown in Tables 1 and 2.

[0297] The 1000h aging retention rate is based on the exposure method 6 in GB / T 16422.3 to test the tensile retention rate after 1000 hours;

[0298] The tensile strength and elongation in the warp and weft directions are measured according to the test method of GB / T 1040;

[0299] Warp and weft tearing are measured according to the test method of GB / T 13763;

[0300] Warp and weft heat shrinkage are part of the company's internal control standards.

[0301] Table 1

[0302]

[0303] Table 2

[0304]

[0305] In comparative example 3, the density of the flat yarn is reduced, and the weight of the cloth base is also reduced, but the weight of the lamination is unchanged. The measured mechanical properties are greatly reduced, and the aging resistance is also reduced. It is judged that the lamination weight ratio is too large, causing thermal damage to the flat yarn, making the product brittle and unable to meet the product requirements.

[0306] It can be seen from Table 1 and Table 2 that the polypropylene inkjet printing materials prepared in Examples 1-9 of the present invention have good mechanical properties and aging resistance.

Claims

1. A wide-width weather-resistant woven reinforced polypropylene inkjet material, characterized in that: From bottom to top, it includes bottom surface layer, cloth base layer and spray-painted surface layer; The fabric base layer comprises a fabric base, the fabric base comprises a flat yarn, and the flat yarn comprises polypropylene and an anti-aging masterbatch.

2. The polypropylene inkjet printing material according to claim 1, characterized in that: The warp density of the cloth base is controlled at 36-140 strands / 10 cm, and the weft density is controlled at 34-130 strands / 10 cm.

3. The polypropylene inkjet printing material according to claim 1, characterized in that: The cloth base also includes twisted polypropylene yarn or calcium carbonate masterbatch.

4. The polypropylene inkjet printing material according to claim 1, characterized in that: The width of the flat yarn is controlled at 0.7-2.7 mm, and the linear density is controlled at 28-128 tex; and / or the tensile strength of a single yarn in the flat yarn is ≥ 0.38 N / tex, and the shrinkage rate of a single yarn is below 2%.

5. The polypropylene inkjet printing material according to claim 1, characterized in that: The mass fraction of the anti-aging masterbatch in the flat yarn is 3-10%, and the mass fraction of the polypropylene is 90-97%.

6. The polypropylene inkjet printing material according to claim 1, characterized in that: The anti-aging masterbatch comprises a hindered amine light stabilizer, an ultraviolet absorber, an antioxidant and polypropylene.

7. The polypropylene inkjet printing material according to claim 1, characterized in that: The bottom surface layer comprises polypropylene, low-density polyethylene and masterbatch; and / or, the spray-painted surface layer comprises polypropylene, low-density polyethylene, anti-aging masterbatch and titanium dioxide masterbatch; and / or, the bottom surface layer is omitted.

8. The polypropylene inkjet printing material according to claim 1, characterized in that: The tensile strength of the polypropylene inkjet printing material in the warp direction is not less than 400 Newtons / 5 cm, the tensile strength in the weft direction is not less than 300 Newtons / 5 cm, and the tear strength is not less than 90 Newtons.

9. The process for preparing the polypropylene inkjet printing material according to any one of claims 1 to 8, characterized in that: The following steps are involved: (1) polypropylene and anti-aging masterbatch are mixed, melt-extruded into a film, and then cut into strips, stretched, shaped, and then rolled to obtain flat yarns, which are then woven to obtain a cloth base; (2) Mixing polypropylene, low-density polyethylene and masterbatch, melt-extruding, casting onto one side of the fabric base, cooling and shaping, and obtaining a bottom layer - a fabric base layer; (3) polypropylene, low-density polyethylene, anti-aging masterbatch and titanium dioxide masterbatch are mixed, melt-extruded, cast on the side of the bottom layer-cloth base layer close to the cloth base layer, cooled and shaped, and the polypropylene inkjet printing material is obtained.

10. A billboard, characterized in that: The invention comprises the polypropylene inkjet printing material according to any one of claims 1 to 8.

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