CN114290781B - Fog-line substrate film - Google Patents
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- CN114290781B CN114290781B CN202210016384.0A CN202210016384A CN114290781B CN 114290781 B CN114290781 B CN 114290781B CN 202210016384 A CN202210016384 A CN 202210016384A CN 114290781 B CN114290781 B CN 114290781B
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Abstract
The invention provides a fog-pattern substrate film, which is formed by compounding three layers, wherein each layer is made of degradable materials, so that the fog-pattern substrate film is convenient for natural biological decomposition and is beneficial to protecting the ecological environment; the preparation process of the fog-pattern substrate film utilizes the transmittance of each position of the surface of the film to calculate whether the thickness distribution of each position of the surface is uniform or not, so that the surface of the fog-pattern substrate film is smooth and comfortable; the beneficial effect that the fog-line substrate film is uniformly and rapidly subjected to biological automatic degradation is realized.
Description
Technical Field
The invention belongs to the technical field of environmental protection and biodegradation of substrate films, and particularly relates to a fog-pattern substrate film and a preparation method thereof.
Background
The base material film with lines is widely applied to sanitary nursing, and is suitable for sanitary towel films for women due to the fact that uniform lines formed by the concave-convex parts on the surface of the base material film generate soft, smooth and comfortable special touch feeling. However, the existing substrate film production process with lines generally has the phenomena of uneven thickness and uneven lines, and can cause uncomfortable touch feeling of skin. The traditional sanitary material casting film has the defects of not light weight, thinness, softness, hard hand feeling, reduced physical property of a low gram weight product after weight reduction and the like, and different polyethylene and polypropylene materials have different melt indexes and process processing temperatures, and have the problems of poor blending effect and poor plasticization in material mixing, so the cast sanitary material casting film is not suitable for women sanitary articles. Moreover, the existing substrate film with grains has high biodegradation difficulty, resource waste does not accord with the low-carbon environmental protection idea at most, the burden on the natural environment is increased, and the existing substrate film with grains is not beneficial to environmental protection.
Disclosure of Invention
The present invention is directed to a haze-textured substrate film that solves one or more of the problems of the prior art and provides at least one of the advantages of the present invention.
The invention provides a fog-pattern substrate film, which is formed by compounding three layers, wherein each layer is made of degradable materials, so that the fog-pattern substrate film is convenient for natural biological decomposition and is beneficial to protecting the ecological environment; the preparation process of the fog-pattern substrate film utilizes the transmittance of each position of the surface of the film to calculate whether the thickness distribution of each position of the surface is uniform or not, so that the surface of the fog-pattern substrate film is smooth and comfortable.
In order to achieve the above object, according to an aspect of the present invention, there is provided a moire base material film, which is formed by compounding three layers of films, wherein the three layers of films comprise:
a first layer: 70-80% of mLLDPE (metallocene linear low density polyethylene), 10% of degradable additive and 10-20% of color master batch;
a second layer: 75-85% of PP, 10% of degradable additive and 5-15% of color master batch;
and a third layer: 73-80% of LDPE, 10% of degradable additive, 9-16.5% of color master batch and 0.5-1% of oleamide;
the degradable additive comprises the following components in percentage by weight: 65-80% of calcium carbonate powder and 20-35% of plant fiber starch.
Further, the preparation method of the fog-line substrate film, as shown in fig. 1, comprises the following steps:
s201, respectively stirring and mixing the raw materials of the three-layer film for 15-20 minutes;
s202, respectively inputting the raw materials of the three layers of films into three screw extruders, respectively shearing the raw materials of the three layers of films, melting at 126-300 ℃, extruding and plasticizing to form films, wherein the thickness of each film is 0.1-0.25mm, and obtaining three groups of films;
s203, sequentially superposing and compounding the three groups of films at a die head through a flow divider of a screw extruder to form a composite substrate film;
s204, obtaining the thickness value of the composite base material film by using a laser online thickness meter, and controlling the thickness value to be limited to 0.35-0.75 mm;
and S205, carrying out corona treatment on the composite substrate film by using a corona machine to obtain a fog-line substrate film, and recording the voltage value of the corona machine.
Further, the preparation method of the fog-line substrate film further comprises the following steps of detecting whether the quality of the fog-line substrate film is qualified:
s206, carrying out light transmittance detection on the composite substrate film by using a light transmittance tester to obtain a light transmittance matrix;
s207, calculating according to the light transmittance matrix to obtain a contrast array;
s208, detecting whether the quality of the fog-line substrate film is qualified or not by using the comparison array;
s209, if the quality of the fog-pattern substrate film is qualified, carrying out traction rolling; and cutting and splitting the rolled fog pattern substrate film.
The preparation system of the fog-pattern substrate film comprises a processor, a memory and a computer program which is stored in the memory and can run on the processor, the preparation system of the fog-pattern substrate film runs in computing equipment such as a desktop computer, a notebook computer, a palm computer and a cloud data center, and the processor executes the computer program to realize the steps in the preparation method of the fog-pattern substrate film:
s201, respectively stirring and mixing the raw materials of the three-layer film for 15-20 minutes;
s202, respectively inputting the raw materials of the three layers of films into three screw extruders, respectively shearing the raw materials of the three layers of films, melting at 126-300 ℃, extruding and plasticizing to form films, wherein the thickness of each film is 0.1-0.25mm, and obtaining three groups of films;
s203, sequentially superposing and compounding the three groups of films at a die head through a flow divider of a screw extruder to form a composite substrate film;
s204, obtaining the thickness value of the composite base material film by using a laser online thickness meter, and controlling the thickness value to be limited to 0.35-0.75 mm;
s205, carrying out corona treatment on the composite base material film by using a corona machine to obtain a fog-pattern base material film, and recording the voltage value of the corona machine;
s206, carrying out light transmittance detection on the composite substrate film by using a light transmittance tester to obtain a light transmittance matrix;
s207, calculating according to the light transmittance matrix to obtain a contrast array;
s208, detecting whether the quality of the fog-line substrate film is qualified or not by using the comparison array;
s209, if the quality of the fog-line substrate film is qualified, carrying out traction rolling; and cutting and splitting the rolled fog pattern substrate film.
The invention has the beneficial effects that: the invention provides a fog-pattern substrate film which is formed by compounding three layers, wherein each layer is made of degradable materials, so that the natural decomposition of organisms is facilitated, and the ecological environment is protected; the preparation process of the fog-line substrate film utilizes the transmittance of each position of the film surface to calculate whether the thickness distribution of each position of the surface is uniform or not, so that the fog-line substrate film surface is smooth and comfortable; the beneficial effect that the fog-line substrate film is uniformly and rapidly subjected to biological automatic degradation is realized.
Drawings
The above and other features of the present invention will become more apparent by describing in detail embodiments thereof with reference to the attached drawings in which like reference numerals designate the same or similar elements, it being apparent that the drawings in the following description are merely exemplary of the present invention and other drawings can be obtained by those skilled in the art without inventive effort, wherein:
FIG. 1 is a flow chart illustrating the preparation of a haze-textured substrate film;
FIG. 2 is a diagram showing an example of a haze-textured substrate film.
Detailed Description
The conception, the specific structure and the technical effects produced by the present invention will be clearly and completely described in conjunction with the embodiments and the attached drawings, so as to fully understand the objects, the schemes and the effects of the present invention. It should be noted that, in the present application, the embodiments and features of the embodiments may be combined with each other without conflict.
In the description of the present invention, the meaning of a plurality of means is one or more, the meaning of a plurality of means is two or more, and larger, smaller, larger, etc. are understood as excluding the number, and larger, smaller, inner, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
Referring to fig. 1, a flow chart of a method for preparing a haze base film according to the present invention is shown, and a haze base film according to an embodiment of the present invention is described with reference to fig. 1.
The invention provides a fog-pattern substrate film, as shown in figure 2, the fog-pattern substrate film is formed by compounding three layers of films, and the three layers of films comprise the following components in percentage by weight:
a first layer: 70-80% of mLLDPE, 10% of degradable additive and 10-20% of color master batch;
a second layer: 75-85% of PP, 10% of degradable additive and 5-15% of color master batch;
and a third layer: 73-80% of LDPE, 10% of degradable additive, 9-16.5% of color master batch and 0.5-1% of oleamide;
the degradable additive comprises the following components in percentage by weight: 65-80% of calcium carbonate powder and 20-35% of plant fiber starch, preferably, the plant fiber starch is potato starch, and the color masterbatch is polyvinyl chloride.
Further, as shown in fig. 1, the method for preparing the haze base material film comprises the following steps:
s201, respectively stirring and mixing the raw materials of the three-layer film for 15-20 minutes;
s202, respectively inputting the raw materials of the three layers of films into three screw extruders, respectively shearing the raw materials of the three layers of films, (the PP melting point is 189 ℃, the LDPE processing temperature is 150-210 ℃) and melting at 126-300 ℃, extruding and plasticizing to form films, wherein the thickness of the films is 0.1-0.25mm, and obtaining three groups of films;
s203, sequentially superposing and compounding the three groups of films at a die head through a flow divider of a screw extruder to form a composite substrate film;
s204, obtaining the thickness value of the composite base material film by using a laser online thickness meter;
and S205, carrying out corona treatment on the composite substrate film by using a corona machine to obtain a fog-line substrate film, and recording the voltage value of the corona machine.
Further, the preparation method of the fog-pattern substrate film further comprises the following steps of detecting whether the quality of the fog-pattern substrate film is qualified:
s206, carrying out light transmittance detection on the composite substrate film by using a light transmittance tester to obtain a light transmittance matrix;
s207, calculating according to the light transmittance matrix to obtain a contrast array;
s208, detecting whether the quality of the fog-line substrate film is qualified or not by using the comparison array;
s209, if the quality of the fog-line substrate film is qualified, carrying out traction rolling; cutting and coiling the coiled fog pattern substrate film;
in S206, the method for detecting the light transmittance of the composite substrate film by using the light transmittance tester to obtain the light transmittance matrix includes: using a light transmittance tester to perform light transmittance test on each point of the composite substrate film in the form of uniformly arranged dot matrixes on the surface of the composite substrate film, wherein the region for performing the light transmittance test is rectangular, so that the light transmittance of each point is respectively obtained, and a matrix formed by the light transmittance of each point obtained in the form of uniformly arranged dot matrixes is used as a light transmittance matrix (the row and column arrangement of the matrix is that the light transmittance of the corresponding row and column positions of the dot matrixes forms a row and column), wherein the uniformly arranged dot matrixes are matrixes;
in S207 to S208, a contrast array is calculated according to the transmittance matrix, and the method for detecting whether the quality of the haze-pattern substrate film is qualified by using the contrast array specifically includes: the method for recording the light transmittance matrix as a matrix Lumat, the Lumat as a matrix with n rows and m columns, the number of rows in the Lumat as n, the number of columns in the Lumat as m, the serial number of the rows in the Lumat as i, the serial number of the columns in the Lumat as j, i belonging to [1, n ], j belonging to [1, m ], the element with the row serial number of i and the column serial number of j in the matrix Lumat as Lumat (i, j), detecting the state of the matrix Lumat to obtain a state value, and detecting the state of the light transmittance matrix to obtain a contrast array comprises the following steps:
taking the element in the triangular region composed of Lumat (1,1), Lumat (n, m) and Lumat (1, m) in Lumat as a first region, taking the element in the triangular region composed of Lumat (n,1), Lumat (n, m) and Lumat (1, m) in Lumat as a second region, taking the element in the triangular region composed of Lumat (1,1), Lumat (n,1) and Lumat (n, m) in Lumat as a third region, taking the element in the triangular region composed of Lumat (1,1), Lumat (n,1) and Lumat (1, m) in Lumat as a fourth region, and taking the set composed of the first region, the second region, the third region and the fourth region as a set of regions, namely the triangular region composed of the Lumat (1,1), Lumat (n,1) and Lumat (1, m) in Lumat is the area of the triangle between every two points, the first region, the second region, the third region and the fourth region are all divided into equal areas, the number of elements contained in each of the first region, the second region, the third region and the fourth region is the same;
recording a region set as a set Pset, the number of regions in the region set is 4, the sequence numbers of the regions in the region set are represented by pi, pi belongs to [1,4], the regions with the sequence numbers of pi in the region set are recorded as Pset (pi), the number of elements contained in each region Pset (pi) is n (pi), the sequence numbers of the elements contained in the regions Pset (pi) are i (pi), i (pi) belongs to [1, n (pi) ], and the value of the element with the sequence number of i (pi) in the Pset (pi) is P [ i (pi) ];
calculating a contrast array for the region set, wherein the contrast array is an array formed by ratios among elements of the region set, the contrast array with Pset is an array Parr, the number of dimensions in the contrast array is the same as the number of regions in the region set, the number of dimensions in the array Parr is 4, the serial number of the dimensions in the Parr is also represented by pi, the numerical value of the dimension with the serial number of pi in the Parr is represented by Parr (pi), and the calculation formula of the Parr (pi) is as follows:
wherein the function exp is an exponential function with a natural constant e as a base;
the resulting array Parr is as follows,
judging whether constraint conditions are met, wherein the constraint conditions can be as follows:
alternatively, the constraints are:
or, the constraint condition is: judging whether at least 3 elements in the array Parr are larger than the average value of all the elements;
and then, whether the quality of the fog-line substrate film is qualified or not is detected by a contrast array: the state value is a Boolean value which indicates whether the constraint condition is met, if the constraint condition is met, the state value is True, if the constraint condition is not met, the state value is False (because the texture of the fog pattern substrate film can cause the uneven surface of the fog pattern substrate film, namely the thickness of the fog pattern substrate film is uneven, the transmittance of the fog pattern substrate film is uneven under the condition that the texture is uneven in thickness, the thickness change distribution of the texture on the surface of the transmittance control film is uniform, so that the soft and comfortable skin touch feeling is generated, whether the thickness of each region is uniform can be detected according to the transmittance of each region, and if the state value is True, the state value is qualified);
judging whether the quality of the fog-pattern substrate film is qualified or not according to the state value, wherein the quality of the fog-pattern substrate film is qualified if the state value is True, and the quality of the fog-pattern substrate film is unqualified if the state value is False; if the quality of the fog-pattern substrate film is qualified, carrying out traction and rolling.
The preparation system of the fog-pattern substrate film comprises a processor, a memory and a computer program which is stored in the memory and can run on the processor, the preparation system of the fog-pattern substrate film runs in computing equipment such as a desktop computer, a notebook computer, a palm computer and a cloud data center, and the processor executes the computer program to realize the steps in the embodiment of the preparation method of the fog-pattern substrate film:
s201, respectively stirring and mixing the raw materials of the three-layer film for 15-20 minutes;
s202, respectively inputting the raw materials of the three layers of films into three screw extruders, respectively shearing the raw materials of the three layers of films, melting at 126-300 ℃, extruding and plasticizing to form films, wherein the thickness of each film is 0.1-0.25mm, and obtaining three groups of films;
s203, sequentially superposing and compounding the three groups of films at a die head through a flow divider of a screw extruder to form a composite substrate film;
s204, obtaining the thickness value of the composite base material film by using a laser online thickness meter (since the thickness of each layer of the three layers of films is 0.1-0.25mm, the thickness value is controlled to be 0.3-0.75 mm);
s205, carrying out corona treatment on the composite base material film by using a corona machine to obtain a fog-pattern base material film, and recording the voltage value of the corona machine;
s206, detecting the light transmittance of the composite substrate film by using a light transmittance tester to obtain a light transmittance matrix;
s207, calculating according to the light transmittance matrix to obtain a contrast array;
s208, detecting whether the quality of the fog-line substrate film is qualified or not by using the comparison array;
s209, if the quality of the fog-pattern substrate film is qualified, carrying out traction rolling; and cutting and splitting the rolled fog pattern substrate film.
The embodiment of the invention provides a preparation system of a fog-line substrate film, which comprises: a processor, a memory, and a computer program stored in the memory and executable on the processor, the processor when executing the computer program implementing the steps in one of the misted substrate film embodiments described above for controlling the preparation of the one misted substrate film.
The preparation system of the fog-line base material film can be operated in computing equipment such as desktop computers, notebooks, palm computers and cloud data centers. The preparation system of the fog-streak substrate film comprises, but is not limited to, a processor and a memory. It will be understood by those skilled in the art that the example is merely illustrative of a haze substrate film and is not intended to be limiting of a haze substrate film, and may include more or less than a proportion of components, or some combination of components, or different components, for example, a haze substrate film manufacturing system may also include input and output devices, network access devices, buses, and the like.
The Processor may be a Central Processing Unit (CPU), other general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other Programmable logic device, discrete component Gate or transistor logic, discrete hardware components, etc. The general purpose processor may be a microprocessor or the processor may be any conventional processor or the like, the processor is a control center of the preparation system of the fog-textured substrate film, and various interfaces and lines are utilized to connect various subareas of the preparation system of the whole fog-textured substrate film.
The memory may be used to store the computer programs and/or modules, and the processor may be configured to implement the various functions of the one hazy substrate film by running or executing the computer programs and/or modules stored in the memory and invoking the data stored in the memory. The memory may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required by at least one function (such as a sound playing function, an image playing function, etc.), and the like; the storage data area may store data (such as audio data, a phonebook, etc.) created according to the use of the cellular phone, etc. In addition, the memory may include high speed random access memory, and may also include non-volatile memory, such as a hard disk, a memory, a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) Card, a Flash memory Card (Flash Card), at least one magnetic disk storage device, a Flash memory device, or other volatile solid state storage device.
The invention provides a fog-pattern substrate film, which is formed by compounding three layers, wherein each layer is made of degradable materials, so that the fog-pattern substrate film is convenient for natural biological decomposition and is beneficial to protecting the ecological environment; the preparation process of the fog-pattern substrate film utilizes the transmittance of each position of the surface of the film to calculate whether the thickness distribution of each position of the surface is uniform or not, so that the surface of the fog-pattern substrate film is smooth and comfortable; the beneficial effect that the fog-line substrate film is uniformly and rapidly subjected to biological automatic degradation is realized.
Although the present invention has been described in considerable detail and with reference to certain illustrated embodiments, it is not intended to be limited to any such details or embodiments or any particular embodiment, so as to effectively encompass the intended scope of the invention. Furthermore, the foregoing describes the invention in terms of embodiments foreseen by the inventor for which an enabling description was available, notwithstanding that insubstantial modifications of the invention, not presently foreseen, may nonetheless represent equivalent modifications thereto.
Claims (3)
1. The preparation method of the fog-pattern substrate film is characterized by comprising the following steps of:
s201, respectively stirring and mixing the raw materials of the three-layer film for 15-20 minutes;
s202, respectively inputting the raw materials of the three layers of films into three screw extruders, respectively shearing the raw materials of the three layers of films, melting at 126-300 ℃, extruding and plasticizing to form films, wherein the thickness of each film is 0.1-0.25mm, and obtaining three groups of films;
s203, sequentially superposing and compounding the three groups of films at a die head through a flow divider of a screw extruder to form a composite substrate film;
s204, obtaining the thickness value of the composite base material film by using a laser online thickness meter;
s205, carrying out corona treatment on the composite base material film by using a corona machine to obtain a fog-grain base material film, and recording the voltage value of the corona machine;
s206, carrying out light transmittance detection on the composite substrate film by using a light transmittance tester to obtain a light transmittance matrix;
s207, calculating according to the light transmittance matrix to obtain a contrast array;
s208, detecting whether the quality of the fog-line substrate film is qualified or not by using the comparison array;
s209, if the quality of the fog-line substrate film is qualified, carrying out traction rolling; cutting and coiling the coiled fog pattern substrate film;
in S206, the method for detecting the light transmittance of the composite substrate film by using the light transmittance tester to obtain the light transmittance matrix includes: using a light transmittance tester to test the light transmittance of each point of the composite substrate film in the form of uniformly arranged dot matrixes on the surface of the composite substrate film, wherein the region for testing the light transmittance is rectangular, so as to respectively obtain the light transmittance of each point, and using a matrix formed by the light transmittances of each point obtained in the form of uniformly arranged dot matrixes as a light transmittance matrix, wherein the uniformly arranged dot matrixes are matrixes;
in S207 to S208, a contrast array is calculated according to the transmittance matrix, and the method for detecting whether the quality of the haze-pattern substrate film is qualified by using the contrast array specifically includes: recording a light transmittance matrix as a matrix Lumat, the Lumat being a matrix with n rows and m columns, the number of rows in the Lumat being n, the number of columns in the Lumat being m, the serial number of the rows in the Lumat being i, the serial number of the columns in the Lumat being j, i belonging to [1, n ], j belonging to [1, m ], recording an element with the row serial number of i and the column serial number of j in the matrix Lumat as Lumat (i, j), performing state detection on the matrix Lumat to obtain a state value, and performing state detection on the light transmittance matrix to obtain a contrast array, wherein the method comprises the following steps:
taking the element in the triangular region composed of Lumat (1,1), Lumat (n, m) and Lumat (1, m) in Lumat as a first region, taking the element in the triangular region composed of Lumat (n,1), Lumat (n, m) and Lumat (1, m) in Lumat as a second region, taking the element in the triangular region composed of Lumat (1,1), Lumat (n,1) and Lumat (n, m) in Lumat as a third region, taking the element in the triangular region composed of Lumat (1,1), Lumat (n,1) and Lumat (1, m) in Lumat as a fourth region, and taking the set composed of the first region, the second region, the third region and the fourth region as a set of regions, namely the triangular region composed of the Lumat (1,1), Lumat (n,1) and Lumat (1, m) in Lumat is the area of the triangle between every two points, the first region, the second region, the third region and the fourth region are all divided into equal areas, the number of elements contained in each of the first region, the second region, the third region and the fourth region is the same;
recording a region set as a set Pset, the number of regions in the region set is 4, the sequence numbers of the regions in the region set are represented by pi, pi belongs to [1,4], the regions with the sequence numbers of pi in the region set are recorded as Pset (pi), the number of elements contained in each region Pset (pi) is n (pi), the sequence numbers of the elements contained in the regions Pset (pi) are i (pi), i (pi) belongs to [1, n (pi) ], and the value of the element with the sequence number of i (pi) in the Pset (pi) is P [ i (pi) ];
calculating a comparison array for the area set, wherein the comparison array is an array formed by ratios of elements of the area set, the comparison array for recording Pset is an array Parr, the number of dimensions in the comparison array is the same as the number of areas in the area set, the number of dimensions in the array Parr is 4, the serial number of the dimensions in the Parr is also represented by pi, the numerical value of the dimension with the serial number of pi in the Parr is recorded as Parr (pi), and the calculation formula of the Parr (pi) is as follows:
wherein the function exp is an exponential function with a natural constant e as a base;
the resulting array Parr is as follows,
judging whether constraint conditions are met or not, wherein the constraint conditions are as follows:
alternatively, the constraints are:
or, the constraint condition is: judging whether at least 3 elements in the array Parr are larger than the average value of all the elements;
and then, whether the quality of the fog-line substrate film is qualified or not is detected by a contrast array: the state value is a Boolean value which indicates whether the constraint condition is met, if so, the state value is True, and if not, the state value is False;
judging whether the quality of the fog-pattern substrate film is qualified or not according to the state value, wherein if the state value is True, the quality of the fog-pattern substrate film is qualified, and if the state value is False, the quality of the fog-pattern substrate film is unqualified; if the quality of the fog-pattern substrate film is qualified, carrying out traction rolling;
the fog-pattern substrate film is formed by compounding three layers of films, wherein the three layers of films comprise the following components in percentage by weight:
a first layer: 70-80% of mLLDPE, 10% of degradable additive and 10-20% of color master batch;
a second layer: 75-85% of PP, 10% of degradable additive and 5-15% of color master batch;
and a third layer: 73-80% of LDPE, 10% of degradable additive, 9-16.5% of color master batch and 0.5-1% of oleamide;
the degradable additive comprises the following components in percentage by weight: 65-80% of calcium carbonate powder and 20-35% of plant fiber starch.
2. The method for preparing the fog-textured substrate film as claimed in claim 1, wherein the thickness value of the composite substrate film is controlled to be 0.35-0.75 mm.
3. A fog-streak substrate film production system, comprising: a processor, a memory, and a computer program stored in the memory and executed on the processor, wherein the processor implements the steps of the method of claim 1 when executing the computer program.
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