阅读说明：本技术 一种防止pet基膜在放卷机中左右滑膜的方法 (Method for preventing left-right sliding film of PET (polyethylene terephthalate) base film in unreeling machine ) 是由 刘世璋 洪志宗 杨渊智 于 2021-06-01 设计创作，主要内容包括：本发明公开了一种防止PET基膜在放卷机中左右滑膜的方法,步骤包含以下几步：(1)将PET基膜固定在放卷机转轴上；(2)在放卷机的转轴两侧放置固定挡板,基膜两侧紧贴固定挡板；(3)开启电源,进行PET基膜放卷工作。所述固定挡板为轻量化的扇形板、中间圆环板和合页门夹组成的不锈钢挡板；在PET基膜放卷过程中有效防止PET基膜左右滑膜现象的发生,从而提升了增亮膜的产品良率并且有效保护了设备,防止了停机情况的出现,有效避免了生产损失,提高了机器的使用寿命,适宜在光电领域推广,具有广阔的发展前景。(The invention discloses a method for preventing a PET base film from sliding left and right in an unreeling machine, which comprises the following steps: (1) fixing the PET base film on a rotating shaft of an unreeling machine; (2) fixing baffles are arranged on two sides of a rotating shaft of the unreeling machine, and two sides of the base film are tightly attached to the fixing baffles; (3) and (5) starting a power supply to perform PET base film unwinding work. The fixed baffle is a stainless steel baffle consisting of a light fan-shaped plate, a middle circular plate and a hinge door clamp; unreel the emergence of in-process at the PET base film and effectively prevent the synovial membrane phenomenon about the PET base film to promote the product yield of brightness enhancement film and effectively protected equipment, prevented the appearance of the circumstances of shutting down, effectively avoided the production loss, improved the life of machine, suitable popularization in the photoelectricity field has wide development prospect.)

1. A method for preventing a PET base film from sliding left and right in an unreeling machine is characterized in that: the method comprises the following steps: (1) fixing the PET base film on a rotating shaft of an unreeling machine; (2) fixing baffles are arranged on two sides of a rotating shaft of the unreeling machine, and two sides of the base film are tightly attached to the fixing baffles; (3) and (5) starting a power supply to perform PET base film unwinding work.

2. The method for preventing the left and right slip film of the PET-based film in the unreeling machine according to claim 1, wherein: the fixed baffle is a stainless steel plate.

3. The method for preventing the left and right slip film of the PET-based film in the unreeling machine according to claim 2, wherein: the stainless steel plate structurally comprises a sector plate, a middle circular ring plate and a hinge door clamp.

4. The method for preventing the left and right slip film of the PET-based film in the unreeling machine according to claim 2, wherein: the stainless steel plate comprises two fan-shaped plates.

5. The method for preventing the left and right slip film of the PET-based film in the unreeling machine according to claim 3, wherein: the sector plate is a light-weight hollow sector plate.

6. The method for preventing the left and right slip film of the PET-based film in the unreeling machine according to claim 3, wherein: the fan-shaped plate is fixedly connected with the middle annular plate through welding; the arc angle of the sector plate is 90-130 degrees.

7. The method for preventing the left and right slip film of the PET-based film in the unreeling machine according to claim 3, wherein: the fan-shaped plates are fixed on the upper and lower sides of the middle circular plate in an up-and-down symmetrical manner.

8. The method for preventing the left and right slip film of the PET-based film in the unreeling machine according to claim 3, wherein: the hinge door clamp comprises a hinge and a door clamp; the hinge and the door clamp are respectively and independently fixedly connected with the middle circular plate through welding.

9. The method for preventing the left and right slip film of the PET-based film in the unreeling machine according to claim 8, wherein: the hinge and the door clamp are fixed on the left side and the right side of the middle circular plate.

10. The method for preventing the left and right slip film of the PET-based film in the unreeling machine according to claim 1, wherein: the two-side placing fixed baffle is placed in a manner that the plate surfaces of the two-side fixed baffle are parallel to each other and perpendicular to the horizontal plane.

Technical Field

The invention relates to the field of photoelectricity, in particular to a method for preventing a PET (polyethylene terephthalate) base film from sliding left and right in an unreeling machine.

Background

Brightness enhancement film refers to a thin film or sheet that is applied to a TFT LCD backlight module for the purpose of improving the luminous efficiency of the overall backlight system. By utilizing the special prism structure of the brightness enhancement film and through the optical principles such as refraction, total reflection and light accumulation principle, the light rays in all directions can be concentrated to the central visual angle, and then the brightness of the LCD panel is improved and the visual angle is controlled. There are four types of brightness enhancement films, including general prism (normal prism), multi-function prism, micro-lens film, and reflective polarizer (reflective polarizer), each of which has different market characteristics.

Generally, the brightness enhancement film is prepared by the processes of PET unreeling, prism grain transfer, first ultraviolet light curing, back grain transfer, second ultraviolet light curing, front and back protective film laminating and the like. The PET unreeling process is used as the first step of the whole process and is also an important step, and the quality of the brightness enhancement film is determined by the PET unreeling process from the source. And at the in-process that unreels of PET base film, because the influence of PET base film self reason and external equipment, environment takes place the PET base film easily and unreels the in-process about synovial membrane phenomenon, and this kind of phenomenon leads to the product to appear the broad width unstability easily, the condition that the product yield descends to can make the tension of board unstable, cause the condition of shutting down, thereby the economic loss that should not appear, and the emergence of this phenomenon can effectually be prevented in the appearance of PET baffle, and the cost is lower, and is easy and simple to handle.

Therefore, it is a significant work to develop a method for preventing the left and right slip film of the PET base film in the unreeling machine with low cost, simple operation and good effect.

Disclosure of Invention

In order to solve the above problems, the present invention provides a method for preventing a PET base film from being slid left and right in an unreeling machine, comprising the steps of: (1) fixing the PET base film on a rotating shaft of an unreeling machine; (2) fixing baffles are arranged on two sides of a rotating shaft of the unreeling machine, and two sides of the base film are tightly attached to the fixing baffles; (3) and (5) starting a power supply to perform PET base film unwinding work.

Preferably, the fixed baffle is a stainless steel plate.

Preferably, the stainless steel plate comprises a fan-shaped plate, an intermediate circular ring plate and a hinge door clamp.

Preferably, the stainless steel plate comprises two fan-shaped plates.

Preferably, the sector plate is a light-weight hollow sector plate.

As a preferable scheme, the sector plates are fixedly connected with the middle ring plate through welding; the arc angle of the sector plate is 90-130 degrees.

Preferably, the sector plates are fixed on the upper and lower sides of the middle circular ring plate in an up-and-down symmetrical mode.

As a preferred scheme, the hinge door clamp comprises a hinge and a door clamp; the hinge and the door clamp are respectively and independently fixedly connected with the middle circular plate through welding.

Preferably, the hinge and the door clamp are fixed on the left side and the right side of the middle circular ring plate.

As a preferred scheme, the two side placing fixed baffles are placed in a way that the plate surfaces of the two side fixed baffles are parallel to each other and vertical to the horizontal plane.

Has the advantages that:

1. the method for preventing the left and right sliding films of the PET base film in the unreeling machine can effectively prevent the left and right sliding films of the PET base film during unreeling, avoid the phenomenon of large product width caused by the left and right sliding films of the PET base film, and improve the product yield.

2. The method for preventing the left and right slip films of the PET base film in the unreeling machine can effectively prevent the left and right slip films of the PET base film during unreeling, avoid the phenomenon of equipment halt caused by unstable machine tension due to the left and right slip films of the PET base film, reduce production loss and enhance production continuity and efficiency.

3. According to the invention, the stainless steel baffle plate realizes the avoidance of the left and right sliding film phenomenon of the PET base film by the lightest weight of the stainless steel plate and the lowest baffle plate cost through the light weight hollow weight reduction and the ingenious design of the symmetrical sector plates, and the stainless steel baffle plate is economical and practical, has long service life, is simple and convenient to operate, and is convenient to store and transport; wherein the existence of the anti-folding plate on the stainless steel baffle plate and the cooperation of the middle circular plate and the hinge door clamp also provide excellent bending resistance and baffle plate fixing strength for the stainless steel baffle plate.

Drawings

FIG. 1 is a front view of a PET base film unwinding baffle;

FIG. 2 is a rear view of a PET base film unwinding baffle;

in the figure:

1-sector plate, 2-middle circular plate, 3-hinge door clamp, 4-lightweight hollowed hole and 5-anti-folding plate.

Detailed Description

The disclosure may be understood more readily by reference to the following detailed description of preferred embodiments of the invention and the examples included therein. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. In case of conflict, the present specification, including definitions, will control.

The term "prepared from …" as used herein is synonymous with "comprising". The terms "comprises," "comprising," "includes," "including," "has," "having," "contains," "containing," or any other variation thereof, as used herein, are intended to cover a non-exclusive inclusion. For example, a composition, process, method, article, or apparatus that comprises a list of elements is not necessarily limited to only those elements but may include other elements not expressly listed or inherent to such composition, process, method, article, or apparatus.

The conjunction "consisting of …" excludes any unspecified elements, steps or components. If used in a claim, the phrase is intended to claim as closed, meaning that it does not contain materials other than those described, except for the conventional impurities associated therewith. When the phrase "consisting of …" appears in a clause of the subject matter of the claims rather than immediately after the subject matter, it defines only the elements described in the clause; other elements are not excluded from the claims as a whole.

When an amount, concentration, or other value or parameter is expressed as a range, preferred range, or as a range of upper preferable values and lower preferable values, this is to be understood as specifically disclosing all ranges formed from any pair of any upper range limit or preferred value and any lower range limit or preferred value, regardless of whether ranges are separately disclosed. For example, when a range of "1 to 5" is disclosed, the described range should be interpreted to include the ranges "1 to 4", "1 to 3", "1 to 2 and 4 to 5", "1 to 3 and 5", and the like. When a range of values is described herein, unless otherwise stated, the range is intended to include the endpoints thereof and all integers and fractions within the range.

The singular forms "a", "an" and "the" include plural referents unless the context clearly dictates otherwise. "optional" or "any" means that the subsequently described event or events may or may not occur, and that the description includes instances where the event occurs and instances where it does not.

Approximating language, as used herein throughout the specification and claims, is intended to modify a quantity, such that the invention is not limited to the specific quantity, but includes portions that are literally received for modification without substantial change in the basic function to which the invention is related. Accordingly, the use of "about" to modify a numerical value means that the invention is not limited to the precise value. In some instances, the approximating language may correspond to the precision of an instrument for measuring the value. In the present description and claims, range limitations may be combined and/or interchanged, including all sub-ranges contained therein if not otherwise stated.

In addition, the indefinite articles "a" and "an" preceding an element or component of the invention are not intended to limit the number requirement (i.e., the number of occurrences) of the element or component. Thus, "a" or "an" should be read to include one or at least one, and the singular form of an element or component also includes the plural unless the stated number clearly indicates that the singular form is intended.

In order to solve the above problems, the present invention provides a method for preventing a PET base film from being slid left and right in an unreeling machine, comprising the steps of: (1) fixing the PET base film on a rotating shaft of an unreeling machine; (2) fixing baffles are arranged on two sides of a rotating shaft of the unreeling machine, and two sides of the base film are tightly attached to the fixing baffles; (3) and (5) starting a power supply to perform PET base film unwinding work.

In some preferred embodiments, the fixed baffle is a stainless steel plate.

In some preferred embodiments, the stainless steel plate has a structure including a sector plate, an intermediate ring plate, and a hinge door clip.

In some preferred embodiments, the stainless steel plate comprises two fan-shaped plates.

In some preferred embodiments, the sector plates are light-weight hollowed sector plates.

In some preferred embodiments, the sector plates and the middle ring plate are fixedly connected by welding; the arc angle of the sector plate is 90-130 degrees.

In some preferred embodiments, the sector plates are fixed on the upper and lower sides of the middle circular ring plate in an up-and-down symmetrical manner.

In some preferred embodiments, the sector plate further comprises three anti-flap plates; the anti-folding plates are fixedly connected with the sector plates by welding, and the three anti-folding plates are respectively positioned on the left and right side lines and the middle line of the back of the sector plates; the three anti-folding plates are fixedly connected with the middle circular ring plate through welding, and the plate planes are perpendicular to the plate planes of the fan-shaped plates.

In some preferred embodiments, the hinge door clip comprises a hinge and a door clip; the hinge and the door clamp are respectively and independently fixedly connected with the middle circular plate through welding.

In some preferred embodiments, the hinge and the door clip are secured to the left and right sides of the intermediate ring plate.

In some preferred embodiments, the hinge is arranged on the horizontal right side of the middle circular plate, and the hinge allows the middle circular plate parts connected with the upper side and the lower side to rotate relatively to open and close the middle circular plate.

In some preferred embodiments, the door clamp is on the left, and the door clamp controls the opening and closing of the middle annular plate and fixes the position of the baffle on the device.

In some preferred embodiments, the two side fixed baffles are arranged in a way that the plate surfaces of the two side fixed baffles are parallel to each other and perpendicular to the horizontal plane.

Examples

The technical solution of the present invention is described in detail by the following examples, but the scope of the present invention is not limited to all of the examples. The starting materials of the present invention are all commercially available unless otherwise specified.

Example 1

Example 1 provides a method for preventing the left and right slip film of a PET base film in an unreeling machine, comprising the steps of: (1) fixing the PET base film on a rotating shaft of an unreeling machine; (2) fixing baffles are arranged on two sides of a rotating shaft of the unreeling machine, and two sides of the base film are tightly attached to the fixing baffles; (3) and (5) starting a power supply to perform PET base film unwinding work.

The stainless steel plate in the embodiment structurally comprises a sector plate 1, a middle circular plate 2 and a hinge door clamp 3; the stainless steel plate comprises two light hollow sector plates 1; the two light hollow fan-shaped plates 1 are fixedly connected with the middle circular plate 2 through welding, and are symmetrically fixed on the upper side and the lower side of the middle circular plate 2 from top to bottom, and the arc angle of each fan-shaped plate 1 is 110 degrees; the sector plate 1 also comprises three anti-folding plates 5; prevent folded plate 5 and sector plate 1 through welded fastening connection, three prevent folded plate 5 and be located the left and right side line and the middle line at sector plate 1 back respectively, three prevent folded plate 5 and middle ring board 2 through welded fastening connection, and the board plane is mutually perpendicular with sector plate 1's board plane.

The hinge door clamp 3 in the embodiment comprises a hinge and a door clamp; the hinge and the door clamp are respectively and independently fixedly connected with the middle circular plate 2 through welding; the hinge and the door clamp are fixed on the left side and the right side of the middle circular plate 2; the hinge is arranged on the horizontal right side of the middle circular plate 2, and allows the middle circular plate 2 connected with the upper side and the lower side to relatively rotate so as to open and close the middle circular plate 2; the door clamp is arranged on the horizontal left side of the middle circular plate 2, the door clamp controls the middle circular plate 2 to be opened and closed, and the position of the baffle on the equipment is fixed.

In this embodiment, the two side fixing baffles are arranged in a way that the surfaces of the two side fixing baffles are parallel to each other and perpendicular to the horizontal plane.

Example 2

The embodiment of the present invention is different from embodiment 1 in that: the arc angle of the sector plate is 90 degrees.

Example 3

The embodiment of the present invention is different from embodiment 1 in that: the arc angle of the sector plate is 130 degrees.

Comparative example 1

The embodiment of this comparative example is the same as example 1 except that: the arc angle of the sector plate is 20 degrees.

Comparative example 2

The embodiment of this comparative example is the same as example 1 except that: only one sector plate is fixedly connected by welding.

Comparative example 3

The embodiment of this comparative example is the same as example 1 except that: a stainless steel baffle was placed vertically on only one side.

Comparative example 4

The embodiment of this comparative example is the same as example 1 except that: the back of the sector plate of the stainless steel baffle plate does not comprise a folding-proof plate structure.

Comparative example 5

Specific embodiment of this comparative example: stainless steel baffles are not arranged on two sides of the unreeling machine, and a power supply is directly started to unreel the PET base film.

Evaluation of Performance

1. The product yield is as follows: unwinding of the PET base film was performed by the methods of all examples and comparative examples for 50 working days (400 hours), and the occurrence of slip film on the PET base film was marked as defective, and the product yield was (total production amount-total slip film)/total production amount x 100%. Each example was tested 5 times in comparison and the values were averaged and reported in Table 1.

2. The equipment protection effect is as follows: the production of the brightness enhancement film was carried out by the methods of examples and comparative examples, wherein each working day was carried out for 8 hours without stopping the machine, and the working day (400 hours) was continued for 50 working days, and the protection rate of the equipment (total production time-stop time of the slip film)/total production time x 100%, and the larger the value, the better the protection effect. Each example was tested 5 times in comparison and the values were averaged and reported in Table 1.

TABLE 1

Examples	Product yield (%)	Protective effect of apparatus (%)
			T1	100	100
T2	98	98.5
			T3	100	100
D1	86.9	87.5
			D2	85.6	86.2
D3	86.4	87.4
			D4	83.3	84.5
D5	84.1	85.3

Through the embodiments 1-3 and the comparative examples 1-5, the method for preventing the left and right sliding films of the PET base film in the unreeling machine provided by the invention effectively improves the product yield of the brightness enhancement film, effectively protects equipment, prevents the occurrence of shutdown, effectively avoids production loss, and prolongs the service life of the machine, and the applicant finds that when the arc angle of the sector plate is 110 degrees, the protection function of the baffle reaches 100 percent, when the angle is continuously increased, the protection effect of the baffle cannot be changed, but the material consumption of the baffle is increased to form unnecessary waste, so that 110 degrees is the optimal arc angle of the baffle sector plate; the prepared stainless steel baffle is suitable for popularization in the photoelectric field, and has wide development prospect. Wherein, the best performance index is obtained in the example 1 under the factors of the optimal placing method of the stainless steel plate, the arc angle of the sector plate and the like.

Finally, it should be understood that the above-described embodiments are merely preferred embodiments of the present invention, and not intended to limit the present invention, and any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.