Printed superfine fiber towel and preparation method thereof

Abstract

The invention discloses a sublimation printing superfine fiber towel and a preparation method thereof.The preparation method comprises the steps that a hot pressing die head makes contact with label printing roll paper and presses down towel cloth, the temperature of the hot pressing die head is transmitted to the towel cloth through the label printing roll paper, looped piles on the upper side of the towel cloth are heated and thermally shrunk, a printed label is transferred into a thermal shrinkage concave area, and the hot pressing die head rises; a heat-shrinkage concave area consistent with the hot-pressing die head is formed on the towel cloth, looped piles in the heat-shrinkage concave area are laid in a lodging mode, and the color of the looped piles is different from that of an area which is not heated and subjected to heat shrinkage; the surface temperature of the hot pressing die head is 215-220 DEG C, and the contact time of the hot pressing die head and the towel cloth is 2.5-5 seconds; according to the towel, low-gram-weight transfer paper can be adopted, the cost is lower, the plane of the heat-shrinkage concave area is lower than the surface of the looped pile layer of the towel, and the color in the heat-shrinkage concave area is much lighter than the color of the towel body. Moreover, the looped piles are laid in a lodging manner, so that the surface is flatter, the color development of the transfer printing mark is facilitated, and particularly, the color development of the printing mark similar to the natural color of the towel is facilitated.

Description

Technical Field

[0001] The invention relates to the technical field of fiber towel cloth, in particular to a printed ultrafine fiber towel and a preparation method thereof. Background Art

[0002] Printing is a common method for making marks on textiles. For microfiber towels, the required pattern, text or logo can be printed on the surface of the towel using printing technology. This technology has the advantages of bright colors, clear patterns and easy operation.

[0003] Thermal transfer technology is a method of transferring a film with a pattern or text printed on it to a textile by heating it. For microfiber towels, thermal transfer technology can be used to print the logo on the towel. This technology has the advantages of simple operation, diverse patterns, and low cost.

[0004] The patent document with application publication number CN118163473A discloses a continuous textile fabric with a pattern and a hot-melt tear line, as well as a continuous textile fabric integrated processing device capable of synchronously preparing a pattern and a hot-melt tear line, and a specific preparation method, as well as a first limit rod and a second limit rod that limit the upward displacement of the first section to form a force opposite to the movement of the hot pressing plate and the continuous hot printing label roll. Thus, the loops or fluff under the prepared heat transfer pattern are pulled up again and remain standing, and the textile fabric after heat transfer still has soft and fluffy wool layers on both sides, which is not only more beautiful, but also maintains the high water absorption characteristics of the microfiber towel.

[0005] When preparing trademark patterns, corporate LOGO patterns or designated patterns on microfiber towels, the colors of these patterns are fixed and cannot be changed. However, when the color of the microfiber towel body is the same as the pattern color or the color difference is small, the embossed pattern of the same color cannot appear on the towel. Summary of the invention

[0006] In view of the problems in the prior art, the technical problem to be solved by the present invention is to provide a printed microfiber towel which has less influence on water absorption and is more suitable for printing labels in the same color, and a preparation method thereof.

[0007] The technical solution adopted by the present invention to solve the above technical problems is: a method for preparing a thermal sublimation printed microfiber towel, which is characterized by the following steps:

[0008] Step A, a terry cloth having at least an upper terry loop is mounted on a cloth taking-up and releasing mechanism, and the terry cloth passes gradually over the transfer support table in a pulsed manner;

[0009] Step B, installing a label roll with a thermal sublimation ink label on a label roll retracting mechanism with the label facing downward, and passing the label roll over the towel cloth in a pulsed manner, so that the label roll is in close contact with the surface of the towel cloth;

[0010] Step C, the hot pressing die head descends, the detection position on the hot pressing die head synchronously collects the transfer mark position signal on the printing mark roll, and the printing mark roll retracting and releasing mechanism adjusts the position of the printing mark roll according to the position signal in real time;

[0011] Step D, the hot pressing die head descends to contact the printed label roll, vacuuming is turned on, and the printed label roll is adsorbed on the hot pressing die head;

[0012] Step E, the hot pressing die head is pressed downward, and the upper side loops of the towel cloth are heated and shrunk to form a heat shrinkage concave area consistent with the hot pressing die head, the loops in the heat shrinkage concave area are flattened and the color is different from the color of the area that is not heated and shrunk, and the printed mark is transferred to the heat shrinkage concave area to form a print;

[0013] Step F, vacuuming is turned off, the hot pressing die head rises, and the cloth taking-up and releasing mechanism and the printing paper taking-up and releasing mechanism move the printing paper and the towel cloth to a period position respectively.

[0014] The preferred technical solution adopted by the present invention to solve the above technical problem is: in step E, the surface temperature of the hot pressing die head is lower than the melting point of the terry material of the towel cloth.

[0015] The preferred technical solution adopted by the present invention to solve the above technical problem is: in step E, the surface temperature of the hot pressing die head is 215-220 degrees, and the contact time between the hot pressing die head and the towel cloth from the beginning of step E to the completion of step F is 2.5-5 seconds.

[0016] The preferred technical solution adopted by the present invention to solve the above technical problems is: in step A, the towel cloth at the position of the transfer support table is laterally tensioned, and in step F, the hot pressing die head is driven upward for a distance that causes the printed label paper to be pulled up, and then the vacuum is closed and the hot pressing die head is further raised.

[0017] The preferred technical solution adopted by the present invention to solve the above-mentioned technical problems is: a method for preparing a thermal sublimation printed microfiber towel, comprising the following steps: a hot pressing die head contacts a printing label roll and presses down the towel cloth, the temperature of the hot pressing die head is transmitted to the towel cloth through the printing label roll, the upper terry loops of the towel cloth shrink due to heat, the printing label is transferred to the heat shrinkage depression area, the hot pressing die head rises, and a heat shrinkage depression area consistent with the hot pressing die head is formed on the towel cloth, the terry loops in the heat shrinkage depression area are flattened and their color is different from the color of the area that is not heated and shrunk; the surface temperature of the hot pressing die head is 215-220 degrees, and the contact time between the hot pressing die head and the towel cloth is 2.5-5 seconds.

[0018] The preferred technical solution adopted by the present invention to solve the above technical problem is: during the process of the hot pressing die head pressing down the towel cloth and rising up, the towel cloth is placed on the transfer support table and is laterally tensioned.

[0019] The preferred technical solution adopted by the present invention to solve the above-mentioned technical problems is: the hot pressing die head descends to contact the printing paper roll, the vacuum is turned on, the printing paper roll is first adsorbed on the hot pressing die head, and then the hot pressing die head presses down the towel cloth. When rising, the hot pressing die head is driven upward to a distance that pulls up the printing paper roll, and then the vacuum is turned off and the hot pressing die head rises further.

[0020] Another technical solution adopted by the present invention to solve the above-mentioned technical problem is: a thermal sublimation printed microfiber towel, comprising a plurality of towel units connected by mutually spaced hot-melt tear lines, which are continuously processed and prepared by the thermal sublimation printed microfiber towel preparation method to form a print, each towel unit having the heat shrinkable recessed area and the print obtained by transfer and located in the heat shrinkable recessed area.

[0021] The preferred technical solution adopted by the present invention to solve the above-mentioned technical problems is: a thermal sublimation printed microfiber towel, comprising a plurality of towel units connected by mutually spaced hot-melt tear lines, each towel unit having a heat shrinkage recessed area, the loops in the heat shrinkage recessed area lying flat and having a color different from the color of the area that is not heated and shrunk, and the heat shrinkage recessed area has a transferred print.

[0022] Compared with the prior art, the advantages of the present invention are: low-weight transfer paper can be used, and the cost is lower. Moreover, the plane of the heat shrinkable concave area is lower than the surface of the terry layer of the towel. The color in the heat shrinkable concave area evaporates due to the high temperature, and its color is much lighter than the color of the towel body. Moreover, the flattening of the terry loops makes the surface smoother, which is more conducive to the color development of the transfer printing mark, especially the color development of the printing mark that is close to the original color of the towel. In addition, the flattening of the terry loops also improves the color fastness of the printing mark. The terry loops in the heat shrinkable concave area are only heat-shrunk and flattened, but not hot-melted, so they are still in a terry state, and there is no glue feeling that affects the wiping test. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The present invention will be further described in detail below in conjunction with the accompanying drawings and preferred embodiments, but those skilled in the art will appreciate that these drawings are drawn only for the purpose of explaining the preferred embodiments and therefore should not be used as a limitation on the scope of the present invention. In addition, unless otherwise specified, the drawings are only schematically representing the composition or structure of the described objects and may contain exaggerated displays, and the drawings are not necessarily drawn to scale.

[0024] Figure 1 Illustration of a sublimation printed microfiber towel Figure 1 ;

[0025] Figure 2 Illustration of a sublimation printed microfiber towel Figure 2 ;

[0026] Figure 3 Schematic diagram of the equipment for preparing thermal sublimation printed microfiber towels. DETAILED DESCRIPTION

[0027] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It will be appreciated by those skilled in the art that these descriptions are only illustrative and exemplary and should not be construed as limiting the scope of protection of the present invention.

[0028] In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "upper", "lower", "front", "back", "left", "right", "inside" and "outside" are based on the directions or positional relationships shown in the accompanying drawings, or are the directions or positional relationships in which the inventive product is usually placed when used. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0029] It should be noted that like reference numerals denote similar items in the following drawings, and thus, once an item is defined in one drawing, it may not be further defined or explained in subsequent drawings.

[0030] like Figure 1-2 As shown, this embodiment provides a thermal sublimation printed microfiber towel 100 and a preparation method thereof. The thermal sublimation printed microfiber towel 100 is made of polyester or polyester, and includes a base layer 10 and a terry layer 20 on the upper and lower surfaces. The microfiber towel is a continuous towel, including a plurality of towel units 101 connected by mutually spaced hot-melt tear lines Y, each towel unit 101 has a heat shrinkable recessed area S, the terry in the heat shrinkable recessed area S is flatly laid and has a color different from that of the area that is not heated and shrunk, so that the heat shrinkable recessed area presents a distinct marking area, and the heat shrinkable recessed area S has a transferred print.

[0031] The preparation method is as follows: the hot pressing die head 3 contacts the printed label paper and presses down the towel cloth, the temperature of the hot pressing die head 3 is transmitted to the towel cloth through the printed label paper, the upper terry loops of the towel cloth shrink due to the heat, the printed label is transferred to the heat shrinkage depression area, the hot pressing die head rises, and a heat shrinkage depression area consistent with the hot pressing die head is formed on the towel cloth, the terry loops in the heat shrinkage depression area lie flat and their color is different from the color of the area that is not heated and shrunk.

[0032] Furthermore, if Figure 3 As shown, the specific steps include:

[0033] Step A: The terry cloth with double-sided terry loops is mounted on the cloth taking-up and releasing mechanism 1 , and the terry cloth passes over the transfer support table 4 step by step in a pulsed manner.

[0034] Step B: Install the label roll with thermal sublimation ink printing mark on the label roll retracting mechanism 2 with the printing mark facing downward, and the label roll passes over the towel cloth in a pulsed manner, so that the label roll is in close contact with the surface of the towel cloth.

[0035] Step C, the hot pressing die head 3 descends, and the detection position on the hot pressing die head synchronously collects the transfer mark position signal on the printing label roll, and the printing label roll retracting and releasing mechanism adjusts the printing label roll position according to the position signal in real time.

[0036] Step D: The hot pressing die head 3 descends to contact the printed label paper, vacuuming is turned on, and the printed label paper is adsorbed on the hot pressing die head. The printed label paper receives the temperature of the hot pressing die head before being pressed to achieve preheating, which is more conducive to subsequent transfer.

[0037] Step E, the hot pressing die 3 presses, the upper side loops of the towel cloth are heated and shrunk, forming a heat shrinkage depression area consistent with the hot pressing die head, the loops in the heat shrinkage depression area are inverted and laid flat, and the color is different from the color of the area that is not heated and shrunk, and the printed mark is transferred to the heat shrinkage depression area to form a print.

[0038] Step F, vacuuming is turned off, the hot pressing die head 3 rises, and the cloth retracting and releasing mechanism and the printing label roll retracting and releasing mechanism respectively move the printing label roll and the towel cloth by one cycle position. Preferably, after the die head is driven upward by a distance that the printing label roll is pulled up, vacuuming is turned off and the hot pressing die head rises further. The vacuuming setting is more conducive to the separation of the printing label roll paper carrier and the ink printing label.

[0039] It should be recognized that the plane of the heat shrinkable concave area is lower than the surface of the terry layer of the towel. The color in the heat shrinkable concave area evaporates due to high temperature, and its color is much lighter than the color of the towel itself. Moreover, the flattening of the terry makes the surface smoother, which is more conducive to the color development of the transfer printing, especially the color development of the printing that is close to the original color of the towel. In addition, the flattening of the terry also improves the color fastness of the printing. The terry in the heat shrinkable concave area is only heat shrunk and flattened, but not melted, so it is still in the terry state, and there is no glue feeling that affects the wiping test.

[0040] Microfiber towels for cleaning are consumables used in large quantities in daily cleaning operations, and they are inexpensive, so automated continuous production is required to reduce costs. Therefore, in this embodiment, the cloth retracting and releasing mechanism and the printing roll retracting and releasing mechanism are pulsed to achieve intermittent printing on continuous towel cloth.

[0041] In this embodiment, the towel cloth first undergoes a printing operation and then enters the next process of preparing a hot melt tear line using ultrasound, and the whole process is continuous. When the towel cloth passes over the transfer support table in a pulsed manner, it has a fixed retention time, which is the printing operation time. During this period of time, the towel cloth at the transfer support table position is horizontally tensioned. This tensioning method can be to set a tensioning wheel 5 on both sides, or to press down the two sides of the transfer support table by a pressure plate driven by a cylinder on both sides. When the vacuum is turned off in step F and the hot pressing die head is rising, the tensioning wheel relaxes or the cylinder releases the pressure plate so that the pressure plate presses down on the towel cloth, thereby restoring the towel cloth to a natural state, which is conducive to the forward feeding of the towel cloth.

[0042] Preferably, the carrier of the printed label roll is a low-weight transfer paper, and the ink is an ultra-high-melting thermal sublimation ink. Continuous cursor detection points are provided on the printed label roll, and these cursor detection points are synchronously collected by the detection positions on the hot pressing die head to detect the positions, thereby adaptively adjusting the printing position to ensure the position of the printing mark on the towel unit.

[0043] In this embodiment, the printed label on the printed label roll paper used for transfer adopts the printing technology matched with the thermal sublimation transfer technology, and the printed label carrier is 30g transfer paper.

[0044] In this embodiment, in step E, the surface temperature of the hot pressing die head is lower than the melting point of the terry material of the towel cloth. In step E, the surface temperature of the hot pressing die head is 215-220 degrees, and the contact time between the hot pressing die head and the towel cloth, i.e., the hot pressing time, is 2.5-5 seconds from the start of step E to the completion of step F. Since the temperature of the hot pressing die head is low and the hot pressing time is short, the temperature will not be transmitted to the lower terry, so the terry of the towel cloth on the back of the printed label will not change its shape due to the upper hot label.

[0045] If the die head temperature is set at 215-220 degrees and the pressing time is set to more than 5 seconds, the transfer paper or the printed label of the printed label roll will be easily burned, or the transfer paper will stick to the towel body. If it is less than 2.5 seconds, the printed label will be missing. If the die head temperature is set to more than 220 degrees, the transfer paper or the printed label of the printed label roll will be easily burned, and the fiber material will be hot-melted and plasticized to produce glue.

[0046] Preferably, in this embodiment, the surface temperature of the hot pressing die is 218 degrees, the hot pressing time is 3 seconds, and after 10,000 pieces of the prepared thermal sublimation printed microfiber towels are washed 5 times at room temperature without detergent and dried, the defective rate of the pattern is 0.06%, which greatly improves the production efficiency.

[0047] The above is an introduction to the thermal sublimation printed microfiber felt and its preparation method provided by the present invention. This article uses specific examples to illustrate the principle and implementation of the present invention. The description of the above embodiments is only used to help understand the present invention and its core ideas. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the present invention, the present invention can also be improved and modified in a number of ways, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A method for preparing a thermal sublimation printed microfiber towel, characterized in that Follow these steps: Step A, a terry cloth having at least an upper terry loop is mounted on a cloth taking-up and releasing mechanism, and the terry cloth passes gradually over the transfer support table in a pulsed manner; Step B, installing a label roll with a thermal sublimation ink label on a label roll retracting mechanism with the label facing downward, and passing the label roll over the towel cloth in a pulsed manner, so that the label roll is in close contact with the surface of the towel cloth; Step C, the hot pressing die head descends, the detection position on the hot pressing die head synchronously collects the transfer mark position signal on the printing mark roll, and the printing mark roll retracting and releasing mechanism adjusts the position of the printing mark roll according to the position signal in real time; Step D, the hot pressing die head descends to contact the printed label roll, vacuuming is turned on, and the printed label roll is adsorbed on the hot pressing die head; Step E, the hot pressing die head is pressed downward, and the upper side loops of the towel cloth are heated and shrunk to form a heat shrinkage concave area consistent with the hot pressing die head, the loops in the heat shrinkage concave area are flattened and the color is different from the color of the area that is not heated and shrunk, and the printed mark is transferred to the heat shrinkage concave area to form a print; Step F, vacuuming is turned off, the hot pressing die head rises, and the cloth taking-up and releasing mechanism and the printing paper taking-up and releasing mechanism move the printing paper and the towel cloth to a period position respectively.

2. The method for preparing a thermal sublimation printed microfiber towel according to claim 1, characterized in that: In step E, the surface temperature of the hot pressing die head is lower than the melting point of the terry material of the towel cloth.

3. The method for preparing a thermal sublimation printed microfiber towel according to claim 1, characterized in that: In step E, the surface temperature of the hot pressing die head is 215-220 degrees, and the contact time between the hot pressing die head and the towel cloth is 2.5-5 seconds from the start of step E to the completion of step F.

4. The method for preparing a thermal sublimation printed microfiber towel according to claim 1, characterized in that: In step A, the towel cloth at the transfer support table is laterally tensioned, and in step F, after the hot pressing die head is driven upward a distance that causes the printed label paper to be pulled up, the vacuum is closed and the hot pressing die head is further raised.

5. The preparation method of thermal sublimation printed microfiber towel is characterized in that The method comprises the following steps: a hot pressing die head contacts a printed label paper roll and presses down a towel cloth, the temperature of the hot pressing die head is transmitted to the towel cloth through the printed label paper roll, the upper terry loops of the towel cloth shrink due to the heat, the printed label is transferred to the heat shrinkage depression area, the hot pressing die head rises, a heat shrinkage depression area consistent with the hot pressing die head is formed on the towel cloth, the terry loops in the heat shrinkage depression area are flattened and laid flat, and the color is different from the color of the area that is not heated and shrunk; the surface temperature of the hot pressing die head is 215-220 degrees, and the contact time between the hot pressing die head and the towel cloth is 2.5-5 seconds.

6. The method for preparing the thermal sublimation printed microfiber towel according to claim 5, characterized in that: The hot pressing die head presses the towel cloth downward until it rises, and the towel cloth is placed on the transfer support table and is laterally tensioned.

7. The method for preparing the thermal sublimation printed microfiber towel according to claim 5, characterized in that: The hot pressing die head descends to contact the printing paper roll, and the vacuum is turned on. The printing paper roll is first adsorbed on the hot pressing die head. Then, the hot pressing die head presses down the towel cloth. When rising, the hot pressing die head is driven upward for a distance that pulls up the printing paper roll, and then the vacuum is turned off and the hot pressing die head rises further.

8. Thermal sublimation printed microfiber towel, characterized by It comprises a plurality of towel units connected by mutually spaced hot-melt tear lines, and is continuously processed and prepared by the preparation method of thermal sublimation printed microfiber towels as described in any one of claims 1 to 7 to form printing, and each towel unit has the heat shrinkable recessed area and the printing obtained by transfer in the heat shrinkable recessed area.

9. Thermal sublimation printed microfiber towel, characterized by It comprises a plurality of towel units connected by mutually spaced hot-melt tear lines, each towel unit has a heat-shrinkable concave area, the terry loops in the heat-shrinkable concave area are flattened and the color is different from the color of the area not subjected to heat shrinkage, and the heat-shrinkable concave area has a transferred print.

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